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https://www.readbyqxmd.com/read/28284833/electrospun-starch-nanofibers-recent-advances-challenges-and-strategies-for-potential-pharmaceutical-applications
#1
REVIEW
Guodong Liu, Zhengbiao Gu, Yan Hong, Li Cheng, Caiming Li
Electrospun starch nanofibers have high porosity, extremely high specific surface area, and biocompatible, biodegradable, and bioabsorbable properties. As a result, starch nanofibers have great potential in pharmaceutical applications, including drug delivery, wound dressing, and tissue engineering. Here, we summarize and review the recent developments in the synthesis of electrospun starch fibers from common starch, modified starch, and hybrids with other polymers. Moreover, the challenges and strategies for the fabrication and application of starch fibers in pharmaceutical applications are presented...
March 9, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28256051/histopathological-assessment-of-oasis-ultra-on-critical-sized-wound-healing-a-pilot-study
#2
Daniel Dante Yeh, Rosalynn M Nazarian, Leah Demetri, Tomaz Mesar, Suzan Dijkink, Andreas Larentzakis, George Velmahos, Karim Walid Sadik
BACKGROUND: Dermatopathologists assess wounds secondary to trauma, infection, or oncologic resection that can be challenging to reconstruct. OASIS® Ultra, an extracellular matrix, has been described for use in chronic and burn wounds. The aim of this pilot study is to assess wound healing in post-traumatic and infective wounds treated with OASIS using histological markers of repair. METHODS: Adults with traumatic, infective or iatrogenic wound defects with size precluding primary closure were eligible...
March 2, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28255771/amniotic-membrane-in-ophthalmology-properties-preparation-storage-and-indications-for-grafting-a-review
#3
REVIEW
Katerina Jirsova, Gary L A Jones
The use of amniotic membrane in ophthalmic surgery and other surgical procedures in the fields of dermatology, plastic surgery, genitourinary medicine and otolaryngology is on the increase. Furthermore, amniotic membrane and its epithelial and mesenchymal cells have broad use in regenerative medicine and hold great promise in anticancer treatment. Amniotic membrane is a rich source of biologically active factors and as such, promotes healing and acts as an effective material for wound dressing. Amniotic membrane supports epithelialization and exhibits anti-fibrotic, anti-inflammatory, anti-angiogenic and anti-microbial features...
March 2, 2017: Cell and Tissue Banking
https://www.readbyqxmd.com/read/28170219/on-demand-dissolution-of-chemically-cross-linked-hydrogels
#4
Marlena D Konieczynska, Mark W Grinstaff
The formation and subsequent on-demand dissolution of chemically cross-linked hydrogels is of keen interest to chemists, engineers, and clinicians. In this Account, we summarize our recent advances in the area of dissolvable chemically cross-linked hydrogels and provide a comparative discussion of other recent hydrogel systems. Using biocompatible macromonomers, we developed a library of cross-linked dendritic hydrogels that possess favorable properties, including biocompatibility, tissue adhesion, and swelling...
February 7, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28120759/-when-textiles-help-your-recovery
#5
Bernard Martel, Christine Campagne, Nemeshwaree Behary Massika
Textiles are widely used in the biomedical domain, particularly in wound dressings or as implantable devices for strengthening or even replacing some damaged organs. Nowadays they present more and more sophisticated functionalities contributing to the healing process, to the organs regeneration, and fight against infection or thrombosis. Advanced spinning technologies of biostable or bioresorbable polymers and surface treatment technologies are often used, as well as nanotechnologies, to implement two main strategies for development of bio-active textiles...
January 2017: Médecine Sciences: M/S
https://www.readbyqxmd.com/read/28111295/glycoproteins-functionalized-natural-and-synthetic-polymers-for-prospective-biomedical-applications-a-review
#6
REVIEW
Shazia Tabasum, Aqdas Noreen, Arooj Kanwal, Mohammad Zuber, Muhammad Naveed Anjum, Khalid Mahmood Zia
Glycoproteins have multidimensional properties such as biodegradability, biocompatibility, non-toxicity, antimicrobial and adsorption properties; therefore, they have wide range of applications. They are blended with different polymers such as chitosan, carboxymethyl cellulose (CMC), polyvinyl pyrrolidone (PVP), polycaprolactone (PCL), heparin, polystyrene fluorescent nanoparticles (PS-NPs) and carboxyl pullulan (PC) to improve their properties like thermal stability, mechanical properties, resistance to pH, chemical stability and toughness...
May 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28099173/surgical-approach-for-ulcerated-locally-advanced-breast-cancer-a-single-center-experience-a-retrospective-study
#7
Rita Laforgia, Clelia Punzo, Annunziata Panebianco, Annalisa Volpi, Marina Minafra, Maria Grazia Sederino
AIM: The aim of our retrospective study is to analyze surgical possibilities for the extended LABC in those cases not suitable for a neoadjuvant chemotherapy step and to consider various reconstruction techniques. MATERIAL OF STUDY: Between 2009 and 2015 we enrolled 11 patients, admitted to the Emergency Department, presenting ulcerated LABC that needed palliative surgical demolitive procedures because of bleeding and anemia and in which was necessary to use natural tissues transposition or synthetic substitutes for the reconstruction of the skin flaps...
January 12, 2017: Annali Italiani di Chirurgia
https://www.readbyqxmd.com/read/28094868/biomaterials-a-potential-pathway-to-healing-chronic-wounds
#8
Mara A Pop, Benjamin D Almquist
Chronic dermal wounds are a devastating problem, which disproportionally affect individuals with conditions such as diabetes, paralysis, or simply old age. These wounds are extremely challenging to treat due to a heterogeneous combination of causative factors, creating a substantial burden on healthcare systems worldwide. Despite their large impact, there is currently a startling lack of options for effectively treating the underlying biological changes that occur within the wounds. Biomaterials possess an enticing ability to provide new comprehensive approaches to healing these devastating wounds; advanced wound dressings are now being developed that enable the ability to coordinate temporal delivery of multiple therapeutics, protect sensitive biologics from degradation, and provide supportive matrices that encourage the growth of tissue...
January 17, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/28090513/an-update-and-review-of-cell-based-wound-dressings-and-their-integration-into-clinical-practice
#9
REVIEW
Austin Pourmoussa, Daniel J Gardner, Maxwell B Johnson, Alex K Wong
Chronic wounds affect over 4 million individuals and pose a significant burden to the US healthcare system. Diabetes, venous stasis, radiation or paralysis are common risk factors for chronic wounds. Unfortunately, the current standard of care (SOC) has a high relapse rate and these wounds continue to adversely affect patients' quality of life. Fortunately, advances in tissue engineering have allowed for the development of cell-based wound dressings that promote wound healing by improving cell migration and differentiation...
December 2016: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28079548/history-and-advancement-of-burn-treatments
#10
Hai-Fei Liu, Feng Zhang, William C Lineaweaver
Advances in burn care have accelerated within the last 50 years. The principal modalities of and approaches to burn treatment include dressings, antimicrobials, fluid resuscitation, burn wound excision, skin grafting, and use of skin substitutes. This review presents a historical outline of these approaches, their current status, and prospects for the future of burn care.
February 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28068055/development-of-advanced-dressings-for-the-delivery-of-progenitor-cells
#11
Giles T S Kirby, Stuart J Mills, Liesbeth Vandenpoel, Jef Pinxteren, Anthony Ting, Robert D Short, Allison J Cowin, Andrew Michelmore, Louise E Smith
Culture surfaces that substantially reduce the degree of cell manipulation in the delivery of cell sheets to patients are described. These surfaces support the attachment, culture, and delivery of multipotent adult progenitor cells (MAPC). It was essential that the processes of attachment/detachment to the surface did not affect cell phenotype nor the function of the cultured cells. Both acid-based and amine-based surface coatings were generated from acrylic acid, propanoic acid, diaminopropane, and heptylamine precursors, respectively...
February 1, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28025638/assessment-of-deep-partial-thickness-burn-treatment-with-keratin-biomaterial-hydrogels-in-a-swine-model
#12
D Poranki, C Goodwin, M Van Dyke
Partial thickness burns can advance to full thickness after initial injury due to inadequate tissue perfusion and increased production of inflammatory cytokines, which has been referred to as burn wound progression. In previous work, we demonstrated that a keratin biomaterial hydrogel appeared to reduce burn wound progression. In the present study, we tested the hypothesis that a modified keratin hydrogel could reduce burn wound progression and speed healing. Standardized burn wounds were created in Yorkshire swine and treated within 30 minutes with keratin hydrogel (modified and unmodified), collagen hydrogel, or silver sulfadiazine (SSD)...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27940041/thermosensitive-nanofibers-loaded-with-ciprofloxacin-as-antibacterial-wound-dressing-materials
#13
Heyu Li, Gareth R Williams, Junzi Wu, Yao Lv, Xiaozhu Sun, Huanling Wu, Li-Min Zhu
To obtain wound dressings which could be removed easily without secondary injuries, we prepared thermoresponsive electrospun fiber mats containing poly(di(ethylene glycol) methyl ether methacrylate) (PDEGMA). Blend fibers of PDEGMA and poly(l-lactic acid-co-ε-caprolactone) (P(LLA-CL) were fabricated via electrospinning, and analogous fibers containing the antibiotic ciprofloxacin (CIF) were also prepared. Smooth cylindrical fibers were obtained, albeit with a small amount of beading visible for the ciprofloxacin-loaded fibers...
December 6, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27865438/evaluation-of-bone-marrow-derived-mesenchymal-stem-cells-for-full-thickness-wound-healing-in-comparison-to-tissue-engineered-chitosan-scaffold-in-rabbit
#14
Mohammad Hossein Rajabian, Gholam Hossein Ghorabi, Bita Geramizadeh, Safoura Sameni, Maryam Ayatollahi
BACKGROUND: Chronic wounds present a major challenge in modern medicine. Even under optimal conditions, the healing process may lead to scarring and fibrosis. The ability of mesenchymal stem cells (MSCs) to differentiate into other cell types makes these cells an attractive therapeutic tool for cell transplantation. Both tissue-engineered construct and MSC therapy are among the current wound healing procedures and potential care. Chitosan has been widely applied in tissue engineering because of its biocompatibility and biodegradability...
February 2017: Tissue & Cell
https://www.readbyqxmd.com/read/27843895/biomaterials-and-nanotherapeutics-for-enhancing-skin-wound-healing
#15
REVIEW
Subhamoy Das, Aaron B Baker
Wound healing is an intricate process that requires complex coordination between many cell types and an appropriate extracellular microenvironment. Chronic wounds often suffer from high protease activity, persistent infection, excess inflammation, and hypoxia. While there has been intense investigation to find new methods to improve cutaneous wound care, the management of chronic wounds, burns, and skin wound infection remain challenging clinical problems. Ideally, advanced wound dressings can provide enhanced healing and bridge the gaps in the healing processes that prevent chronic wounds from healing...
2016: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/27775985/a-brief-history-of-the-treatment-of-burns
#16
Hai-Fei Liu, Feng Zhang, William C Lineaweaver
Advances in burn care have a long history with accelerated development within the last 50 years. The principal areas of burn treatment include dressings, antimicrobials, fluid resuscitation, burn wound excision, grafting of skin, and skin substitution. This review presents a historical outline of these areas, their current status, and prospects for the future of burn care.
October 19, 2016: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/27745716/defocused-shock-wave-therapy-for-chronic-soft-tissue-wounds-in-the-lower-limbs-a-pilot-study
#17
Manuela Porso, Simona Loreti, Sveva Maria Nusca, Sara Luziatelli, Donatella Caccia, Giulia Taborri, Donatella Trischitta, Maurizio Taurino, Luca Padua, Vincenzo Maria Saraceni, Maria Chiara Vulpiani, Mario Vetrano
Chronic soft tissue wounds of the lower limbs are debilitating, painful and often unresponsive to advanced dressing treatments. Extracorporeal shock wave therapy (ESWT) could represent an alternative treatment. Ten patients with chronic soft tissue wounds of the legs, unresponsive to advanced dressing treatments for more than 3 mo, underwent three defocused ESWT sessions at 72-h intervals. In every session, the sum of 300 standard pulses + 100 pulses per square centimeter was applied at 0.15 mJ/mm(2) and 4 Hz over the edge of the wound...
January 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/27738884/a-regenerative-approach-with-dermal-micrografts-in-the-treatment-of-chronic-ulcers
#18
Francesco De Francesco, Antonio Graziano, Letizia Trovato, Gabriele Ceccarelli, Maurizio Romano, Marco Marcarelli, Gabriella Maria Cusella De Angelis, Umberto Cillo, Michele Riccio, Giuseppe Andrea Ferraro
BACKGROUND: The etiology of non-healing ulcers depends on both systemic and local factors. The introduction of advanced dressing, negative wound therapy and compression therapy have undoubtedly improved clinical outcomes. The principal aim of study was to demonstrate the efficacy of dermal micrografts in the treatment of ulcers with different etiologies. The second aim was to investigate in vitro the action of micrografts in the regenerative process. METHODS: The dermal micro-grafts were obtained from mechanical disaggregation of small pieces of skin tissue through a medical device called Rigeneracons...
February 2017: Stem Cell Reviews
https://www.readbyqxmd.com/read/27720964/enhancing-effect-of-%C3%AE-cyclodextrin-on-wound-dressing-properties-of-sacran-hydrogel-film
#19
Nasrul Wathoni, Keiichi Motoyama, Taishi Higashi, Maiko Okajima, Tatsuo Kaneko, Hidetoshi Arima
A wound dressing is one of the essential approaches for preventing further harm to cutaneous wounds as well as promoting wound healing. Therefore, to achieve ideal wound healing, the development of advanced dressing materials is necessary. Recently, we revealed that a novel megamolecular polysaccharide, sacran, has potential properties as a biomaterial in a physically cross-linked hydrogel film (HGF) for wound dressing application. In this study, to enhance the wound-healing properties of sacran hydrogel film (Sac-HGF) further, we fabricated and characterized novel Sac-HGFs containing cyclodextrins (CyDs)...
January 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/27646503/biocomposites-of-copper-containing-mesoporous-bioactive-glass-and-nanofibrillated-cellulose-biocompatibility-and-angiogenic-promotion-in-chronic-wound-healing-application
#20
Xiaoju Wang, Fang Cheng, Jun Liu, Jan-Henrik Smått, David Gepperth, Mika Lastusaari, Chunlin Xu, Leena Hupa
Biocomposites of copper-containing mesoporous bioactive glass (Cu-MBG) and nanofibrillated cellulose (NFC) were designated as potential dressing material for chronic wound healing. The phase composition and mesoporous micro-structure of the synthesized Cu-MBGs were elaborately characterized by combining several techniques, including TEM, SEM, XRD, SXAS and N2 physisorption. High bioactivity of the Cu-MBG was confirmed in stimulated body fluids in vitro. A controlled dissolution of Cu from the glass suggests Cu-MBG a suitable source for Cu release in wound healing dressings...
September 16, 2016: Acta Biomaterialia
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