Biography: Prof. Mohan Edirisinghe holds the established Bonfield Chair of Biomaterials in the Department of Mechanical Engineering at University College London (UCL) and has served as a University of London professor for over 15 years. He was appointed to this UCL chair in December 2005 and prior to this he was Professor of Materials at Queen Mary University of London. He has actively pursued advanced materials processing, forming and manufacturing research, for over 25 years publishing over 350 journal papers with a H-index of 54, 9500 citations (Source: Google Scholar, April 2017). In addition, his research has led to many inventions and patents and he has also delivered over a 100 keynote/invited lectures at many different international conferences and meetings worldwide, particularly in the USA (major recent meetings include: TMS, MS&T and MRS). He has supervised over a 100 researchers, graduating 100 doctoral students (30 to date at UCL), and has been awarded grants to the value of over £25 million, with 42 UK Research Council grants including two Platform Grants which have given him the opportunity to adventurously explore novel avenues of forming advanced materials for application in key areas such as healthcare. His research has won many prizes including the Royal Society Brian Mercer (Innovation) Feasibility Award an unprecedented three times (2005, 2009 and 2013), the 2010 Materials Science Venture Prize and the 2012 Presidents Prize of the UK Biomaterials Society to recognise outstanding contributions to the biomaterials field. In 2017 he was the recepient of The Royal Academy of Engineering Armourers & Brasiers prize for excellence in Materials Engineering and the Primier IOM3 Chapman Medal for his distinguished research in the field of biomedical materials.
Abstract: A new generation of biomaterials which rapidly advances the clinical adaptation of biomedical engineering has emerged; these are finer biomaterial entities such as microbubbles, nanovesicles, porous and solid particles at all scales, different types of capsules and smart nanofibers. These products are increasingly playing a crucial role in the application of engineering in medicine and for which there is a significant industrial demand. But a striking limitation has been the lack of commercially viable methods to reproducibly generate such structures with adequate process control. This talk will focus on novel methods and devices created by exploiting the well-known principles of phenomena such as electrohydrodynamics, microfluidics and gyration to prepare such fine entities containing the desired contents including active pharmaceutical ingredients, with clear possibilities of controlled mass production
Biography: Dr. Devika Chithrani is an assistant professor in the Department of Physics and Astronomy at University of Victoria and also part of the medical physics faculty in British Columbia Cancer Agency, Victoria, Canada. She is also an iBESTresearch scientist at Li KaShing Knowledge institute, St. Michael hospital, Toronto. She was a recipient of the prestigious Natural Sciences and Engineering Research Council (NSERC) doctoral award and NSERC post-doctoral award during her graduate and post-graduate studies at university of Toronto, Canada. She was the recipient of the Physics Gold medal and Faculty Gold medal at her undergraduate convocation.
Abstract: Smart nanomaterials for cancer therapy: Recent developments in nanotechnology has provided new tools for cancer therapy and diagnosis. The technology is expected to generate innovations and play a critical role in cancer therapeutics. Among other nanoparticle (NP) systems, there has been tremendous progress made in the use of spherical gold NPs (GNPs), gold nanorods (GNRs), gold nanoshells (GNSs) and gold nanocages (GNCs) in cancer therapeutics. In treating cancer, radiation therapy and chemotherapy remain the most widely used treatment options and recent developments in cancer research show that the incorporation of gold nanostructures into these protocols has enhanced tumor cell killing. These nanostructures further provide strategies for better loading, targeting, and controlling the release of drugs to minimize the side effects of highly toxic anticancer drugs used in chemotherapy and photodynamic therapy. In addition, the heat generation capability of gold nanostructures upon exposure to UV or near infrared light is being used to damage tumor cells locally in photothermal therapy. Hence, gold nanostructures provide a versatile platform to integrate many therapeutic options leading to effective combinational therapy in the fight against cancer. In this lecture, the recent progress in the development of gold-based NPs towards improved therapeutics will be discussed. A multifunctional platform based on gold nanostructures with targeting ligands, therapeutic molecules, and imaging contrast agents, holds an array of promising directions for cancer research
Biography: Alexander Seifalian current projects have led to the development of cardiovascular implants using nanomaterials and stem cell technology, and the development of organs using tissue engineering and nanoparticles for detection and treatment of cancer. He has also developed a family of nanomaterials and nanocomposite polymers for a range of biomedical applications.He was awarded the top prize in the field for development of nanomaterials and technologies for cardiovascular implants in 2007 by Medical Future Innovation, and in 2009 received a Business Innovation Award from UK Trade & Investment (UKTI) in the Life Sciences and Healthcare category.
Abstract: Keynote speech on "functional Graphene and biomimetic nanomaterials are is the next generation biomaterial for development of human organs"
Properties of Biomaterials
Biography: Hnawi Salma Kaotar is from Laboratoire LN2E, Faculté des Sciences, Morocco.
Abstract: In this work, the main objective is to study the structural and chemical properties of chicken feathers in order to improve recovery of agro-food waste andidentify a most suitable process to extract keratin which is an important ingredient for cosmetic products. A chemical treatment of the chicken feathers was considered to bring out the content of the organic and mineral matters using the combustion technique also the hydrolysis of keratin.We have investigated the Scanning electron microscope which reveals a low level of carbon and high level of minerals compared to the initial material. These preliminary studies give chemical analysis of chicken feathers in carbon and other mineral elements.
Keywords: Bio-polymer; agro-food waste; Poultry feather; nano biomaterials
Biography: Dr. Sikander Ali did his Ph.D (2005) from University of the Punjab, Lahore. He is an eminent researcher in Fermentation Technology. He has published over 185 research papers in Journals of National and International repute. As PI/Co-PI, he headed 3 National and 2 International research projects. He has supervised 66 MSc/BSc Hons, 40 MPhil and 2 Ph.Dresearch students. He has availed Fulbright Scholarship (2002-2003). His research output has been recognized by Frost and Sullivan (2003). He also got training in bioenzyme preparation from China (2004). In 2005, he was awarded with MEXT Scholarship, Japan. In 2006, he was declared as Active Scientist by PSF. He was honored with Endeavour Research Award (2011) for Post-Doc in Australia. He has been declared as the Productive Scientist of Pakistan by PCST (2002-2013). In 2014, Eminent Scientific Discovery acknowledged his contribution in Biomedical Research. He has participated in about 50 conferences/symposia/workshops
Abstract: The present investigation deals with the production of a thermophilic peroxidase by Aspergillus versicolour IMPP-1175 and enzyme immobilization by entrapment in calcium alginate to degrade aromatic compounds in textile waste water. The batch culture experiments were carried out using pre-treated cotton seed meal (CSM) as a raw substrate under solid-state-fermentation (SSF) in Erlenmeyer flasks (250 ml). Cultural conditions including 30 ml of saline water (pH 7.57) at 1:3 substrate to moisture ratio, time of incubation (48 h) and size of inoculum (8%, v/v) were optimized for the improved production (67.1 U/g) of manganese peroxidase (MnP). Metallurgical microscopy of unfermented and fermented CSM exhibited quite different surface properties of the particles. The crude MnP extract was then partially characterized to determine the thermophilic behaviour of the enzyme. The activity increased by 1.5 fold at 50ºC when incubated for 45 min. Hydrogen peroxide (1 M) was selected as an enzyme inducer in the assay mixture. Associative enzymes particularly catalase, laccase and lignin peroxidase were also observed, but their highest activities were 19.72, 4.28 and 31.45 U/g, respectively. The enzyme was partially purified by (NH4)2SO4 precipitation and maximum specific activity (2.028 U/mg) was detected at 60% salt concentration. The fold purification was found to be 2.088. During sample dialysis, the pellet was found to be superior compared to the supernatant. The enzyme MnP was lyophilized by a freeze dryer at –40ºC under vacuum. Notably over 2.1 fold highly active enzyme concentration was accomplished in only 15 min. A higher stability and activity of MnP was observed when 1.5 ml enzyme extract was immobilized by entrapment in 3% (w/v) calcium alginate for 25 min. The potential residual enzyme activity by the immobilized MnP was found to be 226.18 U/g which supported maximum degradation of 10% phenol solution. At 50% diluted sample of textile wastewater, 179.6 U/g of the immobilized MnP were consumed while the remaining activity declined sharply to 46.58 U/g showing optimal enzyme application. During the course of enzymatic reaction, the initial and final pH values were recorded 8.11 and 8.02, respectively. Molecular identification of the fungal strain Aspergillus versicolor IMPP-1175 showed 97% homology with Aspergillus species.
Biography: Elif Bedir is from Koc University, Surface Science and Technology Center (KUYTAM),Turkey
Abstract: Although the bulk properties of the biomaterial are critical determinants of the biological performance of the material, it is rare that a biomaterial with suitable bulk properties also possesses appropriate surface characteristics for clinical applications, and very few surfaces are truly biocompatible. In spite of ever-increasing knowledge about the surface modification methods or coating materials for implants, finding reliable coating for most metallic biomaterials, especially NiTi alloys, has not completed yet. Finding a biocompatible and durable coating for NiTi alloys, which has a high tendency to release allergic Ni atoms in biological environments, is a challenging task for researchers.
Biography: Phospholipids, especially phosphatidylcholine, are very commonly used in medicine as a drug delivery systems:most investigated of them are liposomes.The aim of work was the use of phospholipid micelles rather liposomes as drug delivery systems and as drugs themselves.To obtain the phospholipid micelles are extremely small size we used homogenization under high pressure, ultrafiltration and freeze-drying.Phosphoglivis Russian original drug, which includes the phospholipid micelles with a size of 30-50 nm in diameter with incorporated glycyrrhizinic acid,which possesses weak detergent properties and the ability to induce the synthesis of ƴ-interferon was used forthe treatment of liver diseases including viral hepatitis (B and C). Phosphogliv exists on pharmaceutical Russian market with volume of ~ 30 millions of dollars. Nowdays the other phospholipids micelles with size of 15-25 nm in diameter without glycyrrhizinicacid were produced for improvement of reverse cholesterol transport and normalization of lipid metabolism.
Phospholipid micelles as drug delivery system are biodegradable, biologically inert, do not cause allergic, antigenic, or pyrogenic reaction. The new technology was created to produce phospholipid micelles with particles diameter 15-25 nm, in the form of lyophilic powder, which is stable at storage. The main principles of incorporation of pharmacologicaly active substances such as doxorubicine.arbidole, rifampicine etc. into phospholipid micelles considerably increased their bioavailability and therapeutic efficiency
Abstract: Phospholipids, especially phosphatidylcholine, are very commonly used in medicine as a drug delivery systems:most investigated of them are liposomes.The aim of work was the use of phospholipid micelles rather liposomes as drug delivery systems and as drugs themselves.To obtain the phospholipid micelles are extremely small size we used homogenization under high pressure, ultrafiltration and freeze-drying.Phosphoglivis Russian original drug, which includes the phospholipid micelles with a size of 30-50 nm in diameter with incorporated glycyrrhizinic acid,which possesses weak detergent properties and the ability to induce the synthesis of ƴ-interferon was used forthe treatment of liver diseases including viral hepatitis (B and C). Phosphogliv exists on pharmaceutical Russian market with volume of ~ 30 millions of dollars. Nowdays the other phospholipids micelles with size of 15-25 nm in diameter without glycyrrhizinicacid were produced for improvement of reverse cholesterol transport and normalization of lipid metabolism.
Phospholipid micelles as drug delivery system are biodegradable, biologically inert, do not cause allergic, antigenic, or pyrogenic reaction. The new technology was created to produce phospholipid micelles with particles diameter 15-25 nm, in the form of lyophilic powder, which is stable at storage. The main principles of incorporation of pharmacologicaly active substances such as doxorubicine.arbidole, rifampicine etc. into phospholipid micelles considerably increased their bioavailability and therapeutic efficiency.
Biography: Dr. Joel I. Osorio, MD, is from RegenerAge International. Westhill University School of Medicine, MX 905610, Mexico.
Abstract: As it has been previously demonstrated that coelectroporation
of Xenopus laevis frog oocytes
with normal cells and cancerous cell lines induces
the expression of pluripotency markers,
and in experimental murine model studies that
Bioquantine® extract (purified from intra- and
extra-oocyte liquid phases of electroporated
oocytes) showed potential as a treatment for a
wide range of conditions as Squint, Spinal Cord
Injury (SCI) and Cerebral Palsy among others.
The current study observed beneficial changes
with Bioquantine® administration in a patient
with a severe SCI. Pluripotent stem cells have
therapeutic and regenerative potential in clinical
situations CNS disorders even cancer.2-3-7 One
method of reprogramming somatic cells into
pluripotent stem cells is to expose them to extracts
prepared from Xenopus laevis oocytes1
We showed previously that coelectroporation of
Xenopus laevis frog oocytes; with normal cells
and cancerous cells lines, induces expression of
markers of pluripotency.4 We also observed therapeutic
effects of treatment with a purified extract
(Bioquantine) of intra- and extra-oocyte
liquid phases derived from electroporated X.
laevis oocytes, on experimentally induced
pathologies including murine models of
melanoma, traumatic brain injury, and experimental
skin wrinkling induced by squalenemonohydroperoxide
(Paylian et al, 2016). The
positive human findings for Spinal Cord Injury,
and Cerebral Palsy with the results from previous
animal studies with experimental models of
traumatic brain injury, respectively (Paylian et
al, 2016). Because of ethical reasons, legal restrictions,
and a limited numbers of patients, we
were able to treat only a very small number of
patients. These results indicate that Bioquantine
® may be safe and well tolerated for use in
humans, and deserves further study in a range of
degenerative disorders. We propose that the
mechanism of action of Bioquantine® in these
various diseases derives from its unique pharmacology
and combinatorial reprogramming
properties. In conclusion, these preliminary findings
suggest that Bioquantine is safe and well tolerated on patients with Cerebral Palsy and-
Spinal Cord Injury, among others. In addition to
the regenerative therapy and due to the patient
condition, we decided to include the Restore-
Sensor SureScan5-6 . Based on the of electrical
stimulation for rehabilitation and regeneration
after spinal cord injury published by Hamid and
MacEwan 8-9 , we designed an improved delivery
method for the in situ application of MSCs
and Bioquantine® in combination with the
RestoreSensor® SureScan® Conclusions: To the
present day the patient who suffered a total section
of spinal cord at T12-L1 shows an improvement
in sensitivity, strength in striated
muscle and smooth muscle connection, 9 months
after the first therapy of cell regeneration and 1
month after the placement of RestoreSensor® at
the level of the lesion, the patient with a complete
medullary section shows an evident improvement
on his therapy of physical rehabilitation
in standing for the first time and showing a
progressively important functionality.
Biography: Dr. Takao HANAWA is Professor of Department of Metallic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University since 2004. He was a president of the Japanese Society for Biomaterials and is now a member of Science Council of Japan. He has experienced as Deputy-in-General of Biomaterials Research Center, National Institute for Materials Science. He has developed several new metallic biomaterials and is now operating several research projects on metal-based medical and dental materials. In particular, zirconium alloys showing low magnetic susceptibility to decrease MRI artifact and nano-topography to accelerate the differentiation of stem cells by femto-second laser.
Abstract: Over 70% of implant devices are made of metals, because of their high strength, toughness, and durability. Metals are generally superior to ceramics and polymers on the above properties for medical devices. Therefore, it is difficult to replace metals in medical devices with ceramics or polymers. In this regard, research and development of metals continue on the purpose of improving mechanical and surface properties, which govern their mechanical and interfacial compatibility. Research and development of metals continue with the purpose of improving mechanical and surface properties, which govern their mechanical and tissue compatibility.
After micro arc oxidation (MAO), bone formation on titanium is accelerated. Silver is easily contained in the surface oxide layer by the addition of silver in the electrolyte for MAO. In this case, live bacteria were killed and simultaneously calcification occurred in a certain silver amount. This result reveals that bone formation and antibacterial property are simultaneously performed by addition of calcium, phosphate, and silver to surface oxide layer by MAO. It is possible to obtain and control dual-functional property by this technique.
To clarify the effects of micron/nano hybrid topography on cell behavior and morphology, we investigated the adhesion of human mesenchymal stem cell (hMSC) to titanium surfaces with three different topographies; namely, Micron, Nano, and Hybrid grooves which created using a femtosecond laser. In addition, immune-fluorescent detection of the differentiation of hMSC cultured on specimens after differentiation was conducted. Four cell types, neurocytes, adipocytes, osteocytes, and chondrocytes, were differentiated from hMSC. The different surface features had different effects on the differentiation of hMSC. In particular, the Hybrid surface topography promoted the osteogenic differentiation and chondrogenic differentiation.
On the other hand, we have developed Zr-based alloys, showing low magnetic susceptibility, high strength and corrosion resistance, to decrease MRI artifact. A large-amount melting of Zr-1mass%Mo alloy and investigated mechanical properties, crystal phase, and magnetic susceptibility, for the commercialization of the alloy was performed. Finally, MRI artifact of spinal instruments consisting of the alloy and implanted in sheep spine was observed. 3T MRI artifact of spinal instruments consisting of the alloy and implanted into sheep spine occupied in 2 mm and the vertebral canal appeared. Therefore, this alloy is a candidate of MRI compatible alloy.
Tissue Engineering and Regenerative Medicine
Biography: Suwan N. Jayasinghe is from BioPhysics Group,
Department of Mechanical Engineering, University College London, UK.
Abstract: The ability to manipulate and distribute living mammalian cells with control presents fascinating possibilities for a plethora of applications in our healthcare. These imply several possibilities in tissue engineering and regenerative biology/medicine, to those of a therapeutic nature. The physical sciences are increasingly playing a pivotal role in this endeavour by both advancing existing cell engineering technology and pioneering new protocols for the creation of biologically viable structures. The talk will briefly
introduce leading technologies1, which have been fully validated from a physical,chemical and biological stand point for completely demonstrating their inertness for directly handling the most intricate advanced material known to humankind. Hence, each protocol's advantages and disadvantages will be clearly identified, whilst recognizing their future biological and engineering challenges. Although several
technologies will be discussed the talk will focus of bio-electrosprays2 and cell
electrospinning3 which have truly pushed back the frontiers of tissue engineering and
regenerative medicine, previously hither to unachieved by any of its competing technologies in the toolbox. In conclusion, a few selected biotechnological
applications will be presented where these protocols could undergo focused exploration. Successful development of these bio-protocols sees the emergence of unique future platform strategies within both a laboratory and a clinical environment having far-reaching consequences for our healthcare.
Biography: Stelios T. Andreadis received his M.S. (Applied Mathematics) and Ph.D. degree in Chemical Engineering from the University of Michigan studying the dynamics of retroviral gene transfer for gene therapy. He then pursued postdoctoral training at the Center for Engineering in Medicine at Harvard Medical School, where he worked in the areas of gene therapy, tissue engineering and regenerative medicine. Currently he serves as Professor and Chair of Chemical and Biological Engineering, Professor of Biomedical Engineering and Member of the Center of Excellence in Bioinformatics and Life Sciences at the University at Buffalo, State University of New York. He is also the Director of the Stem Cells in Regenerative Medicine (SCiRM) Training Program that was recently funded by NYSTEM to train students in stem cell biology and bioengineering and applications of stem cells in regenerative medicine.
Abstract: Cardiovascular disease is the leading cause of mortality worldwide. Regarded as the therapeutic gold standard, treatment with autologous grafts suffers from several technical and patient-related risks. Tissue engineered small diameter blood vessels mayprovide a promising alternative solution as replacement grafts. In this study, weemployed adult and induced pluripotent stem cells to engineer fully functional vascular grafts that were implanted into the arterial circulation of a physiologically relevant ovine animal model, where they remained patent and underwent successful remodeling. During the course of these studies we observed that mesenchymal stem cells (MSC) originating from older donors suffer from limited proliferative capacity and significantly reduced myogenic differentiation potential. This is a major concern, as the patients most likely to suffer from cardiovascular disease are elderly and are in need of vascular grafts. Notably, we discovered that delivery of a single pluripotency associate transcription factor, Nanog reversed the proliferation and differentiation potential of MSC from adult donors. I will present data supporting this claim and our efforts to understand the mechanism of how Nanog promotes myogenic differentiation, contractile functionand extracellular matrix synthesis of senescent MSC. In addition to MSC, we recently discovered that Nanog restored the ability of senescent skeletal muscle cells (SkMC) to form myotubes, suggesting that molecular engineering strategies can reverse the effects of organismal aging and restore the potential of adult stem cellsfor use in cellular therapies and tissue regeneration.In the second part of my presentation I will focus on reprogramming of skin cells to neural crest stem cells (NC) and their derivatives. NC cells are induced by signaling events at the neural plate border during development of vertebrate embryos. Initially arising within the central nervous system, NC cells subsequently undergo an epithelial to mesenchymal transition to migrate into the periphery, where they differentiate into diverse cell types. We discovered that postnatal human epidermal keratinocytes (KC) can be reprogrammed toward the NC fate without genetic modification or reprogramming to the pluripotent state. Genome-wide transcriptome analyses show that KC-derived NC cells are similar to NC cells derived from human embryonic stem cells. Moreover, KC-NC give rise in vitro and in vivo to NC derivatives such as peripheral neurons, melanocytes, Schwann cells and mesenchymal cells (osteocytes, chondrocytes, adipocytes, and smooth muscle cells). Lineage tracing studies by implantation of KC-NC into chick embryos confirmed the NC phenotype of these cells. This work represents a paradigm shift as it demonstrates the plasticity of human epidermal cells to be reprogrammed into cells of common developmental origin – both originate from the ectoderm - without genetic modification and under defined culture conditions. Finally, our work has the potential to provide a novel source of abundant, readily accessible, autologous stem cells for treatment of neurodegenerative diseases, for which cell sourcing remains a severe impediment hampering cell therapy approaches.
Biography: Sarah Shafaat is from Department of Materials Science & Engineering, Kroto Research Institute, University of Sheffield, United Kingdom
Abstract: Pelvic organ prolapse and stress urinary incontinenceaffect 40-50% of postmenopausal women worldwide. Polypropylene meshes have been extensively used for the surgical intervention of these disorders; however, these meshes can lead to severe complications in some patients. The need for synthetic materials more suited for use in the pelvic floor repair is widely accepted. This study aims to develop an electrospun 17-β-estradiol releasing polyurethane (PU) scaffold that not only provides the appropriate mechanical support to the prolapsed pelvic organs but can also stimulate new extracellular matrix (ECM) production and angiogenesis.
Methods: PU scaffolds with and without 17-β-estradiol (25mg/g and 50mg/g) were prepared by blend electrospinning. Mechanical properties of scaffolds were assessed by uniaxial cyclic and non-cyclic testing. The viability and ECM production of human adipose derived mesenchymal stem cells (hADMSCs) cultured on 17-β-estradiol releasing PU scaffolds was evaluated. Angiogenic potential of estradiol releasing scaffolds was demonstrated by using an ex ovo chick chorioallantoic membrane (CAM) assay.
Results: The inclusion of estradiol in PU scaffolds did not change the ultrastructure but it significantly increased the ultimate tensile strength of scaffolds. hADMSCs on estradiol-releasing PU scaffolds showed more ECM production. The CAM assay revealed a significantly higher angiogenic potential of estradiol-releasing PU scaffolds with an additive effect seen when hADMSCs cultured on estradiol scaffolds. Histological examination of CAM tissue sections showed extensive cellular infiltration and a good tissue integration for all constructed scaffolds.
Conclusions: This study shows the angiogenic potential of estradiol-releasing PU scaffolds with appropriate strength and elasticity desirable to support the pelvic floor.
Biography: Dr.Mohammad Nazrul Islam has completed his MBBS degree from DhakaUniversity, and later M.Sc.(BME)from Gono-biswabidyalaya, Dhaka, Bangladesh. His professional intern/trainingwas done at Carnegie Hill Institute, New York,USA.
He is the foundinding head of Biomedical and Medical Biotechnology Department of ShaheedSuhrawardy Medical College and Hospital, Dhaka. He has published papers in reputed professional, national/international forum/ journals and continues academic/ research work at ShaheedSuhrawardy Medical College and Hospital since 2007.
Here is a brief description of his academic achievement and work placement over the past years.
In 1967 a few years after the first working laser was invented, EndreMester in Semmelweis University Budapest, Hungary wanted to find out if laser might cause cancer. He took some mice, shaved the hair off their backs, divided them into two groups and gave a laser treatment with a low powered ruby laser to one group. They did not get cancer and to his surprise the hair on the treated group grew back more quickly than the untreated group. That was how "laser biostimulation" effects were discovered.
(Effect of laser on hair Growth of mice (in Hungarian).Mester, E. Szende, B. and Tota, J.G. (1967).KiserlOrvostud 19. 628-631).
Purpose of the work:
The effects of pulsed monochromatic light, with fixed pulsations and wavelengths, on the healing of pressure ulcers were evaluated in this prospective, randomized, controlled study.
A placebo-controlled, double-blind study using low energy photon therapy (LLLT) was performed in ten patients with bedsore on the back. Treatment was given three times a week for 10 weeks, using monochromatic (red) optical sources; diode 660nm (GaAl-660). The patients who were randomized to placebo treatment received sham therapy from an identical-appearing light source from the same delivery system.
Ten patients with bedsore were randomized to receive LLLT or placebo therapy. At the conclusion of the study, the percentage of the initial ulcer area remaining unhealed in the LLLT and placebo groups was 24.4% and 84.7%, respectively (P = 0.0008). The decrease in ulcer area (compared to baseline) observed in the LLLT and placebo groups was 193.0 mm2 and 14.7 mm2, respectively (P = 0.0002). One patient dropped out of the study, complaining of lack of treatment efficacy; he was found to be randomized to the placebo group. There were no adverse effects.
In this placebo-controlled, double-blind study LLLT was an effective modality for the treatment of bedsore which were resistant to conventional medical management.
The results are encouraging as pulsed monochromatic light increased healing rate and shortened healing time. This will positively affect the quality of life in elderly patients with pressure ulcers.
Bedsore Healing, Soft Tissue Healing, Decubitus Ulcer,Ulcer Healing, Wound Healing,
LowLevel Laser, Laser Therapy.
Biography: Rana Imani (born 1984) is assistant professor of tissue engineering group, biomedical engineering department, at Amirkabir University of Technology (Tehran polytechnic). She received her PhD (2015) in biomedical engineering (Biomaterials) from Amirkabir University of Technology. In the last year of her PhD, she participate in an exchange program at the University of McGill (Montreal, Canada) to research in the field of nano-carrier design for gene therapy applications. She has jointed to tissue engineering group of Amirkabir University of Technology from 2016. Her main research interests include gene and drug delivery systems, nano-carriers design, tissue engineering scaffolds, 3D cell bioprinting, graphene based nano-compoits and in-situ formed hydrogels for biomedical applications.
Abstract: Nowadays, gene therapy serves as a key platform technology, which has demonstrated increasing promise for treating a variety of genetic-based diseases. The success of nucleic acids-based therapy is largely dependent on the safe and efficient delivery system. Here, a muti-functionalized graphene oxide (GO)-based nanocarrier with conjugation of aminated-polyethylenglycole (PEG-diamine) and octaarginine (R8) for intra-cellular nucleic acids delivery is proposed. The two functionalities are covalently co-conjugated and the PEG: R8 ratio is optimized. The optimized nano-carrier was further functionalized with folic acid (FA) and a lysosomotropic agent (CQ) to add the targetability to cancer cells and enhanced transfection efficacy, respectively. The successful synthesis of the multi-functionalized nanocarrier was comprehensively studied using FITR, Uv-vis spectroscopy, TGA, SEM, TEM, DLS and zeta sizer. The potential of the nanocarrier to localized release of CQ inside the cell lysosomal compartment was studied. The ability of breast cancer cell lines including MCF-7 and MDA-MB 231 for uptake of optimized nano-carrier is investigated. Furthermore, the delivery of functional genes is assessed using c-Myc protein knocking down. The optimized nano-carrier formulation, which was obtained via the co-conjugation approach showed 0.068 μ mol/mg of FA with +31.97 mV and 224 nm charge and size, respectively, and remained stable in biological solution. FA introduction to R8 and PEG functionalized nano-carrier significantly enhanced the rate of MCF-7 cellular internalization via receptor- mediated endocytosis, which was confirmed by TEM observations. However, the macropinocytosis pathway was also induced as a result of R8 functionality. Incorporation of CQ at optimized concentration of 10 μM via π-π stacking empowered the nanocarrier to escape from the lysosomal compartment due to the lysosomotropic
effect of CQ. Furthermore, the pH dependent release profile of CQ (95.3% in pH 4.5) from nano-carrier provided more efficiency and safety than free CQ treating. The MTS and western blot analyses demonstrated that the two functional siRNA, cell death control siRNA and anti c-Myc siRNA, delivered by the multi-functionalized nano-carrier were highly functional after successful transfection of the cells.
As summary, it is highly believed that the synthesized and optimized multi-functional nano-carrier has great potential to be utilized as a siRNA nano-carrier for potential targeted cancer therapy applications.
Keywords: Graphene oxide; Nano-carrier, Multi-functionalization; Cell penetrating peptide; Targeting; Lysosomal escape; siRNA.
Biography: Educated at Leighton Park School in Reading, England, before coming up to Scotland to study at St Andrews University. There I obtained an Honours degree in Zoology and a PhD in invertebrate neuroscience, before moving to Glasgow University to an academic post. 50+ years later, I am still there, having spent 40 years in the Zoology Department, retiring as Reader, before moving to the Centre for Cell Engineering, where I am an Honorary Research Fellow. I began my research career as an invertebrate neuroscientist, but for the last 15 or so years have mainly studied adhesion and friction in tree frogs and their implications for biomimetics.
Abstract: The mechanisms of adhesion in climbing animals have many properties that are the envy of engineers, and therefore have enormous biomimetic potential. These include (a) good adhesion on many substrates (including wet ones), (b) reversible adhesion and re-usability, (c) self-cleaning and (d) only sticking when required. Gecko research has led the way in this field, but tree frogs have evolved a very different mechanism of adhesion, and are therefore worthy of investigation. Such research lies on the border between biology and materials science. In this talk, I will describe how a variety of approaches provide insights into why tree frogs adhere so well to overhanging surfaces (my lab in Glasgow), work on the fabrication of tree frog inspired adhesive surfaces (del Campo, Butt and Kappl, my collaborators at the Max-Planck-InstitutfürPolymerforschung, Mainz) and briefly describe some of the devices that have been inspired by these investigations.
Biomaterials for Therapeutic and Investigative Delivery
Biography: Dr.WangFengjun,MedicineDoctor (Ph.D, MD) in otorhinolaryngology, He gothis MD and Ph.Ddegree at XiangyaHospitalin 2014.nowheis aattending doctorin the department ofOtolaryngology Head & Neck Surgery, XiangyaHospital, Central South University.
Abstract: The aim of this study was to synthesize a HAP genevector with lower cytotoxicity and higher transfection efficiency.The hydroxyapatite (HAP)nanoparticlesweresynthesizedthroughchemicalprecipitation and hydrothermal methods,PEG-PEI copolymersweresynthesized by conjugatingmethoxypoly(ethylene glycol) (mPEG) to branchedpolyethylenimine (PEI), then HAP were surface modifiedwithdifferent ratio of PEI or PEI-PEG. PEG-PEI-HAP/DNA/PEI-PEG mixtures werepreparedwithdifferentweight ratio of HAP/DNA via ultrasonic dispersion and mechanicalstirring. After the examination of complex size, zetapotential, cytotoxicity and DNA binding ability of the newlydevelopedcopolymers, itstransfectionefficiencywerechecked. Thesenovel double coatedvector complexes canrender high transfection efficiency in 293t cells. As the concentration of the second coating and the proportion of the grafting PEG varied, the transfection efficiencychangedaccordingly, of which the highestefficiencyachieved 61.5% by the PEI25K-PEG2K–HAP–DNA-PEI25K-PEG2K nano-vectorcomplex, whichis close to that (69.3%) of the control group of liposome.Thesenovelinorganicvectorsystemswithadequate transfection efficiency, biocompatibility and high carryingcapacity of loadtherapeuticgenecouldpossibly serve as the substitute products for the commercial liposomes.
Biography: Dr. Qiang Qingfen, MD, nowis a Ph.Dstudent of OtolaryngologyHead & Neck Surgery, XiangyaHospital, Central South University, and herPh.D supervisor is Dr. Sun Hong. Shegother MD at XiangyaHospital in 2014. Dr. Qiang Qingfenfocused on the researches of preperation of nanoparticlevector for innereargenetherapysince 2014. Nowsheisstillstudyingthis area and sparing no effort to do the research.
Abstract: The aim of thisstudywas to develop a calcium phosphate (CaP) basedvector for innereargenetherapy. Nanoparticleswith a core of size-definedCaPwascoated by ethyleneimine(PEI) whichserved as surfactant to providecolloidalstabilizationwith high positive charge, and combinedwith a recombinant plasmidcarrying EGFP (structure CaP/PEI/ DNA, fromcore to outside). This newlydevelopedvector system wascharacterized and tested on differentcelllines (293t, HeLa, 5-8f, 6-10b) assessing by expression of EGFP. Lipofectamine® 2000 wasused as positive control. To evaluateitspotential application in genetherapy, therapeuticgene XIAP (encoding X-linkedinhibitor of apoptosisprotein) combinedwith EGFP report genewasloaded for cell transfection in Helacells. Meanwhile, organotypic culture of the organ of Corti and primary culture of stria vascularis marginal cellfrom SD rats wereexposed to the novelvector. The in vivo transfection efficiency and cytotoxicityweretested. This nanoparticlegenevectorshowed high transfection efficiency in all the testedcelllineswith more than 50%, and muchlowercelltoxicitythan Lipo2000 by MTT assay. Furthermore, the transfection efficiencydid notdecreaseobviouslyafterloadingtherapeutic XIAP-EGFP gene in HeLacells. It wasalsoobserved to transfer to cells in the interiorregion of basilar membrane fromRosenthal’s canal and transfectprimary culture of stria vascularis marginal cellsuccessfully. This novelnanoparticlevector system withadequate transfection efficiency, biocompatibility and high carryingcapacity of loadingtherapeuticgenecouldpossibly serve as a practical non-viral genetherapyvector, and isworthy of more researches in the future to applythisvector in innerear in vitro and in vivo
Biography: Sabyasachi Mukhopadhyay obtained his M.Sc. in Physics from IIT (Kharagpur) and Ph.D. from Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore, India in organic photovoltaics. He was a PD fellow at Weizmann Institute of Science (2013-2016) and recipient of a PBC PD Fellowship for 2013.Presently, he is affiliatedto the Physics Department, SRM University AP, Amaravati, Indiaas an Assistant Professor (since June 2017). His research interests involve developing advanced instrumentation and electronic characterization techniques to understand electron transport processes across various molecules and thin films towards efficient energy conversion applications.
Abstract: Electron transfer in and across proteins plays a key role in many biological processes of organisms. Fundamental understanding electron flow within protein structures is not only important for biology, but may also help in the design ofbio-electronic devices that directly couple to biological processes. Electrochemistry of redox-active proteins and enzymes is widely used to study electron transfer processes in those processes, while the impact of external voltage-driven electronic transportacross bio-molecular junctions has been limited because of limited information that could be obtained from resulting current-voltage characteristics.However, as we found,protein-based molecular junctions coulddemonstratedistincttransport efficiencies, i.e.junction-currents, depending on protein orientation, conformation,mutation and especially, the presence of cofactors. Molecular junctions with photoactive membrane proteins and photochromic photoreceptor proteins, which alter their conformation upon light absorption, demonstrate modulation in junction-current with illumination. Removing or modifying protein cofactors not only shows direct effects on junction currents, but also a transition from tunneling (temperature-independent) to temperature-dependent transport. The high conducting nature of the proteinjunctions raises questions about the fundamental nature of electron transport across proteins. Finally, we will demonstratehow these biomolecular signatures from molecular electronic transport can beused to map electron transport paths within the protein.Detailed knowledge of nanoscale conduction pathways would enable developing synthetic proteins with higher conductanceand different functionalities, whichwill directlyaffectthe field of bioelectronics.
Biography: Raniah Alotibi, Ph.D. is a Assistant Professor, Cancer and Genetics from College of Applied Medical Sciences,King Saud bin Abdulaziz University for Health Sciences, Saudi Arabia
Abstract: Telomeres are nucleoprotein structures that contain non-coding (TTAGGG) tandem repeats and associated telomere binding proteins at the end of chromosomes. As a consequence of end-replication losses, telomeres undergo gradual erosion with ongoing cell division. It is hypothesised that in addition to the end-replication problem, mutational mechanisms may contribute to telomere erosion and generate large-scale telomeric deletions. As short dysfunctional telomeres are capable of fusion to other chromosome ends, large-scale telomeric deletion can lead to genomic instability that may drive tumour progression. The aim of this study is to observe if oxidative stress contributes to telomere erosion and large-scale telomeric deletion. By undertaking a comprehensive analysis of telomere dynamics following the induction of oxidative stress, the data presented here showed that oxidative damage does not appear to affect the rate of telomere erosion or the frequency of large-scale telomeric deletion. Instead prolonged exposure to oxidative stress results in the preferential loss from the culture of sub-populations of cells that exhibit short telomeres. We conclude that loss of these cells from the culture may be due to a preferential sensitivity to damage that may be related to these cells being closer to their replicative limit. These data are more consistent with the view that premature senescence does not arise as a consequence of accelerated telomere erosion, but instead more likely results from stochastic DNA damage across the rest of the genome.
Design of Novel Functional Biomaterials
Biography: Liliana Rubio is a Chemical Engineer, Master in Project Management, MBA in Business Administration, MBA in
Innovation Management, Specialist in polymer; focused trainings in Europe, USA and Latin America. Over 18 years’ experience working on new business, R&D and marketing in the polymer and Textile Industry. PMO Polymer Business Intelligence is a Project Management Office, located in Sao Paulo-Brazil,
dedicated to project management consulting, mentoring, covering project planning,implementation and execution through a front-to-end creative quantification approach. Founder of SmartTex Hub ecosystem for the value chain of textile Industry and final applications. Winner of the Clariant Corporation Innovation Extra Award 2007: The sustainable project for the Green Industry on renewable resources. Winner Honorable Mention in Think Beyond
Plastics 2016 innovation competition on the category Most Innovative Emerging Business as part of the team "Plastic Smog Emissions Closed Loopon" with Modern architecture project K-Rubio Smart House (biocomposites from waste micro plastic particles (beads and fibers).
Speaker at conferences and lectures on sustainability and innovation at universities and the main trade fairs of polymer Industry in Latin America and EUA. Author of several articles that have been publish in technology and business magazines
Abstract: On the dynamic business scenario, Be Functional, Smart and Interactive are the most valuable asset to become a reference in our markets. The global Smart textile market promotes the implementation of Nanotech and Bio composites projects in this field. Please note the market by moving beyond traditional path of what means value and fulfilling business future.
We can identify the strategic alliance between Textile industry and several markets as Polymer, Cosmetic, Health, Architecture and Fashion. For several years, while these "S-textile" program have been able to go beyond the original objectives and is seeking its way towards industrialization and mass production for enhancing the breakthrough of intelligence textile systems.
Every Innovative initiative are committed in improving the convergence between industries and the leading edge of the Textile market; on this scenario is a priority the deep understanding of megatrends and new segments. We discuss about the most important trends that will define the architecture future of Smart Textil world
Bio-based Materials and Sustainability
Biography: Nadia Sid is a Senior Project Leader in the Special Materials and Joining (SMJ) group. She joined
TWI in 2013 after receiving her M.Eng. in Chemistry with specialisation in organic chemistry,
University of Strasbourg (France) and a Master degree in Business and Management, EM
Strasbourg Business School. She has worked in BASF (Germany) on protective coating
formulation and University of Strasbourg. She is currently the Co-ordinator of the ISOBIO project
(H2020) and technical manager of three other European funded project.
Abstract: The ISOBIO project will develop a new approach to insulating materials through the novel combination of existing bio-derived aggregates with low embodied carbon and with innovative binders to produce durable composite construction materials. These novel composites will target 50% lower embodied energy and CO2 at component level and 20% better insulation properties than conventional material. The project will also seek to demonstrate a reduction of at least 15% in total costs and 5% total energy spent over the lifetime of a building.
ISOBIO started by identifying promising organic materials that could be used as insulation. Many of these are classified as waste or by-products of processes like food production. Finely chopped bio-materials such as hemp and straw are treated with hygrothermal resins and nano-particles that make them robust, breathable, moisture resistant, and fire retardant.
The bio-aggregates are typically the result of combining organic and inorganic materials; the organic material may have natural insulating properties, for example, while the inorganic material may make the resulting bio-aggregate more robust. Combing organic materials with inorganic materials is not always easy, however. Hemp, for instance, is being combined with lime mortar but the two materials have a degree of chemical incompatibility which could result in a reduction in the strength of the composite material.
To overcome this challenge, ISOBIO’s researchers are using nano-technology to increase the interfacial strength between the two materials, giving the resulting composite material improved mechanical and structural properties.
The new materials not only improve upon the performance of conventional materials, they also offer new features. Hemp shiv, which is the core of the hemp stalk, for example, has a porous structure that provides moisture buffering to maintain humidity at a more constant level.
While the new composite materials may provide more comfort, they need to be at least as robust as conventional materials. To make the hemp-based bio-aggregate water repellent, for example, ISOBIO’s researchers are applying hydrophobic treatments to it. The result is that water vapour can travel in and out of the material but liquid water cannot penetrate it.
TWI is exploring the development of novel inorganic-organic hybrid nano-materials, to be applied as a surface treatment onto bio-based aggregates. These nanoparticles are synthesised
by sol-gel processing and then functionalised with silanes to impart multifunctionality e.g.
hydrophobicity, fire resistance and chemical bonding between the silica nanoparticles and the
This talk will illustrate the approach taken by TWI to design the functionalised silica
nanoparticles by using a material-by-design approach. The formulation and synthesise process
will be presented together with the challenges addressed by those hybrid nano-materials. The
results obtained with regards to the water repellence and fire resistance will be displayed
together with preliminary public results of the ISOBIO project.
Biography: Soumia BELOUAFA received his degree extensive graduate studies from the Faculty of Sciences Ben M'Sik - Hassan II University in Chemistry of Technologically Advanced Materials in 2002 and his Ph.D. in 2006 from Process Engineering Laboratory in the Engineering Department Processes and Environmental at Faculty of Sciences and Technologies Mohammedia - University of Hassan II of Casablanca. She then joined the same University as an administrator. In 2013, BELOUAFA joined the Department of Chemistry of Faculty of Sciences Ben M'Sik as a Professor in Chemistry and Bio Syntho laboratory as researcher Professor. She has published some papers in reputed journals. Her main research interest is design of multi-target drugs supported by apatites.
Abstract: The present conference provides brief informations on calcium phosphate bioceramics and describes in details current state-of-the-art and recent developments on the subject, starting from synthesis and characterization to biomedical and clinical applications. Furthermore, future perspectives are too discussed.
Among the recognized orthopedic and dental cares, calcium phosphates are most of the time used to restore damaged bones and in periodontics, due to the chemical similarity to human bones and teeth. Besides, the most of the synthetic calcium phosphates of high purity seem to be well tolerated by human tissues in vivo and have the excellent biocompatibility, osteoconductivity and bioresorbability.
Usual biomedical applications of calcium phosphate bioceramics contain artificial replacements for teeth, knees, hips, tendons and ligaments, in addition to repair for maxillofacial reconstruction, augmentation and stabilization of the jawbone, spinal fusion, bone fillers after tumor surgery and periodontal diseases.
Among others, biomimetically synthesized formulations in the presence of collagen, chitin, gelatin, and/or alginate, ... appear to be the most promising candidates for clinical applications. In addition, preparation and application of nanodimensional calcium orthophosphates are the important topics in modern material science and such formulations have already been tested clinically for various purposes. The specific advantages of the use of calcium phosphate-based biocomposites in various applications are highlighted. Like the way from a laboratory to a hospital is a long one and the prospective biomedical candidates have to meet a lot requirements, the scientific challenges that need research and development are evenly considered.
Moreover, other applications of calcium phosphate bioceramics are demonstrated in drug delivery systems and tissue engineering purposes because they are effective carriers of growth factors, bioactive peptides and various types of cells.
Keywords: calcium phosphates, bioceramics, biomaterials, biomedical applications, grafts, tissue engineering