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Wound healing and oxygenation

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https://www.readbyqxmd.com/read/28414861/management-of-necrotising-fasciitis-secondary-to-abdominal-liposuction-using-a-combination-of-surgery-hyperbaric-oxygen-and-negative-pressure-wound-therapy-in-a-patient-with-burn-scars
#1
I-Han Chiang, Shun-Cheng Chang, Chih-Hsin Wang
Liposuction is the one of the most frequently performed cosmetic operations and usually has an easy recovery, with a reportedly low overall complication rate. Here, we report the case of a 60-year-old woman with type II diabetes mellitus and a previous burn injury of the abdomen who underwent abdominal liposuction and subsequently developed necrotising fasciitis. Following radical debridement, systemic antibiotic administration, negative pressure wound therapy and hyperbaric oxygen therapy, the wound healed completely...
April 17, 2017: International Wound Journal
https://www.readbyqxmd.com/read/28413643/cytotoxic-and-antimigratory-effects-of-cratoxy-formosum-extract-against-hepg2-liver-cancer-cells
#2
Benjaporn Buranrat, Nootchanat Mairuae, Watchara Kanchanarach
The aim of the present study was to investigate the molecular mechanisms underlying Cratoxylum formosum (CF) Dyer-induced cancer cell death and antimigratory effects in HepG2 liver cancer cells. The cytotoxic, antiproliferative and antimigratory effects of CF leaf extract on human liver cancer HepG2 cell lines were evaluated using sulforhodamine B, colony formation, and wound healing assays. In addition, apoptosis induction mechanisms were investigated via reactive oxygen species (ROS) formation, caspase 3 activities, and mitochondrial membrane potential (ΔΨm) disruption...
April 2017: Biomedical Reports
https://www.readbyqxmd.com/read/28412341/chitosan-a-potential-biopolymer-for-wound-management
#3
REVIEW
Ijaz Bano, Muhammad Arshad, Tariq Yasin, Muhammad Afzal Ghauri, Muhammad Younus
It has been seen that slow healing and non-healing wounds conditions are treatable but still challenging to humans. Wound dressing usually seeks for biocompatible and biodegradable recipe. Natural polysaccharides like chitosan have been examined for its antimicrobial and healing properties on the basis of its variation in molecular weight and degree of deacetylation. Chitosan adopts some vital characteristics for treatment of various kinds of wounds which include its bonding nature, antifungal, bactericidal and permeability to oxygen...
April 13, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28391495/boric-acid-inhibition-of-trichophyton-rubrum-growth-and-conidia-formation
#4
Martin Schmidt
Trichophyton rubrum is a common human dermatophyte that is the causative agent of 80-93% of fungal infections of the skin and nails. While dermatophyte infections in healthy people are easily treatable with over-the-counter medications, such infections pose a higher risk for patients with compromised immune function and impaired regenerative potential. The efficacy of boric acid (BA) for the treatment of vaginal yeast infections prompted an investigation of the effect of BA on growth and morphology of T. rubrum...
April 8, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28384636/hydrogen-peroxide-a-potential-wound-therapeutic-target
#5
Guanya Zhu, Qi Wang, Shuliang Lu, Yiwen Niu
Hydrogen peroxide (H2O2) is a topical antiseptic used in wound cleaning which kills pathogens through oxidation burst and local oxygen production. Hydrogen peroxide had been reported to be a reactive biochemical molecule synthesized by various cells which influences biological behavior through multiple mechanisms: alterations of membrane potential, generation of new molecules and changing intracellular redox balance which results in activation or inactivation of different signaling transduction pathways. Contrary to the traditional viewpoint that H2O2 probably impairs tissue through its high oxidative property, however, a proper level of H2O2 is considered as an important requirement for normal wound healing...
April 5, 2017: Medical Principles and Practice: International Journal of the Kuwait University, Health Science Centre
https://www.readbyqxmd.com/read/28372323/transepidermal-oxygen-flux-measurement-first-clinical-application-for-postoperative-wound-monitoring
#6
M Ranieri, S Klein, A Kotrade, M Nerlich, J Dolderer, L Prantl, S Geis
BACKGROUND: Measurement of skin oxygen is of great interest in diverse fields of medicine. Different pathologies, e.g. infection, ischemia cancer or chronic wounds show a characteristic oxygen distribution and skin oxygen tension. Additionally diverse operative procedures require a reliable postoperative monitoring in order to ensure success of the therapy. OBJECTIVE: Aim of this study was to assess transepidermal oxygen flux for postoperative wound monitoring after operative treatment of fractures close to the hip...
March 30, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28371332/fluorinated-methacrylamide-chitosan-sequesters-reactive-oxygen-species-to-relieve-oxidative-stress-while-delivering-oxygen
#7
Pritam S Patil, Nic D Leipzig
Antioxidants play an important role in regulating overabundant reactive oxygen species (ROS) in wound healing to reduce oxidative stress and inflammation. In this work we demonstrate for the first time that functionalization of methacrylamide chitosan (MAC) with aliphatic pentadecafluoro chains, to synthesize pentadecafluoro-octanoyl methacrylamide chitosan (MACF), enhances the antioxidant capacity of the MAC base hydrogel material, while being able to deliver oxygen for future enhanced wound healing applications...
March 28, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28363663/enzymatic-debridement-of-deeply-burned-faces-healing-and-early-scarring-based-on-tissue-preservation-compared-to-traditional-surgical-debridement
#8
Alexandra Schulz, Paul Christian Fuchs, Irene Rothermundt, Alexandra Hoffmann, Lior Rosenberg, Yaron Shoham, Henrik Oberländer, Jennifer Schiefer
INTRODUCTION: Facial burns occur frequently and depending on the injured skin layers often heal with scars which may cause permanent functional and cosmetic sequelae. Preservation of the sensitive facial skin layers, especially of the dermis is essential for scarless epithelialisation. Enzymatic debridement of deep thermal burns has already been shown to assist with preserving viable dermis. However, up to date, there are no published reports on wound healing and in the long term aesthetic outcome after enzymatic debridement of facial burns...
March 28, 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28350077/advanced-glycation-end-products-promote-the-proliferation-and-migration-of-primary-rat-vascular-smooth-muscle-cells-via-the-upregulation-of-bag3
#9
Cunshu Li, Ye Chang, Yuan Li, Shuang Chen, Yintao Chen, Ning Ye, Dongxue Dai, Yingxian Sun
The present study was aimed to investigate the role of reactive oxygen species (ROS) on advanced glycation end product (AGE)-induced proliferation and migration of vascular smooth muscle cells (VSMCs) and whether Bcl-2‑associated athanogene 3 (BAG3) is involved in the process. Primary rat VSMCs were extracted and cultured in vitro. Cell viability was detected by MTT assay and cell proliferation was detected by EdU incorporation assay. Cell migration was detected by wound healing and Transwell assays. BAG3 was detected using qPCR and western blot analysis...
March 28, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28346371/modulation-of-trp-channel-activity-by-hydroxylation-and-its-therapeutic-potential
#10
REVIEW
Yagnesh Nagarajan, Grigori Y Rychkov, Daniel J Peet
Two transient receptor potential (TRP) channels-TRPA1 and TRPV3-are post-translationally hydroxylated, resulting in oxygen-dependent regulation of channel activity. The enzymes responsible are the HIF prolyl hydroxylases (PHDs) and the asparaginyl hydroxylase factor inhibiting HIF (FIH). The PHDs and FIH are well characterized for their hydroxylation of the hypoxic inducible transcription factors (HIFs), mediating their hypoxic regulation. Consequently, these hydroxylases are currently being targeted therapeutically to modulate HIF activity in anemia, inflammation, and ischemic disease...
March 27, 2017: Pharmaceuticals
https://www.readbyqxmd.com/read/28338216/the-diversified-function-and-potential-therapy-of-ectopic-olfactory-receptors-in-non-olfactory-tissues
#11
REVIEW
Zhe Chen, Hong Zhao, Nian Fu, Linxi Chen
Olfactory receptors (ORs) are mainly distributed in olfactory neurons and play a key role in detecting volatile odorants, eventually resulting in the production of smell perception. Recently, it is also reported that ORs are expressed in non-olfactory tissues including heart, lung, sperm, skin and cancerous tissues. Interestingly, ectopic ORs are associated with the development of diseases in non-olfactory tissues. For instance, ectopic ORs initiate the hypoxic ventilatory responses and maintain the oxygen homeostasis of breathing in the carotid body when oxygen levels decline...
March 24, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28336821/hyperbaric-oxygen-therapy-reduces-renal-lactate-production
#12
Thomas S Nørlinger, Per Mose Nielsen, Haiyun Qi, Emmeli Mikkelsen, Kasper Hansen, Nikolaj H Schmidt, Michael Pedersen, Peter Agger, Fredrik Palm, Christoffer Laustsen
Intrarenal hypoxia is an acknowledged factor contributing to the development of diabetic nephropathy. Hyperbaric oxygen (HBO) therapy is a well-known adjuvant treatment for several medical conditions, such as decompression sickness, infections, and wound healing. The underlying metabolic response of HBO is largely unknown. In this study, we investigated the effect of HBO on the intrarenal metabolic alteration in diabetes. Hyperpolarized [1-(13)C]pyruvate MRI was performed to assess intrarenal energy metabolism in normoglycemic controls and short-term (2 weeks) streptozotocin-induced diabetic rats with and without HBO for five consecutive days...
March 2017: Physiological Reports
https://www.readbyqxmd.com/read/28326157/partial-calcanectomy-and-ilizarov-external-fixation-may-reduce-amputation-need-in-severe-diabetic-calcaneal-ulcers
#13
Mehmet Orçun Akkurt, Ismail Demirkale, Ali Öznur
Objective: The treatment of diabetic hindfoot ulcers is a challenging problem. In addition to serial surgical debridements, hyperbaric oxygen therapy and local wound care play important roles in the surgeon's armamentarium, for both superficial infection and gangrene of the soft tissue, often complicated by osteomyelitis of the calcaneus. The purpose of this study was to evaluate the results of an aggressive approach from diagnosis to treatment of calcaneal osteomyelitis in foot-threatening diabetic calcaneal ulcers...
2017: Diabetic Foot & Ankle
https://www.readbyqxmd.com/read/28319612/colony-stimulating-factor-1-receptor-is-a-central-component-of-the-foreign-body-response-to-biomaterial-implants-in-rodents-and-non-human%C3%A2-primates
#14
Joshua C Doloff, Omid Veiseh, Arturo J Vegas, Hok Hei Tam, Shady Farah, Minglin Ma, Jie Li, Andrew Bader, Alan Chiu, Atieh Sadraei, Stephanie Aresta-Dasilva, Marissa Griffin, Siddharth Jhunjhunwala, Matthew Webber, Sean Siebert, Katherine Tang, Michael Chen, Erin Langan, Nimit Dholokia, Raj Thakrar, Meirigeng Qi, Jose Oberholzer, Dale L Greiner, Robert Langer, Daniel G Anderson
Host recognition and immune-mediated foreign body response to biomaterials can compromise the performance of implanted medical devices. To identify key cell and cytokine targets, here we perform in-depth systems analysis of innate and adaptive immune system responses to implanted biomaterials in rodents and non-human primates. While macrophages are indispensable to the fibrotic cascade, surprisingly neutrophils and complement are not. Macrophages, via CXCL13, lead to downstream B cell recruitment, which further potentiated fibrosis, as confirmed by B cell knockout and CXCL13 neutralization...
March 20, 2017: Nature Materials
https://www.readbyqxmd.com/read/28301358/hyperbaric-oxygen-therapy-exploring-the-clinical-evidence
#15
Gretl Lam, Rocky Fontaine, Frank L Ross, Ernest S Chiu
GENERAL PURPOSE: To provide information about hyperbaric oxygen therapy (HBOT), its mechanisms, indications and safe applications based on clinical evidence. TARGET AUDIENCE: This continuing education activity is intended for physicians, physician assistants, nurse practitioners, and nurses with an interest in skin and wound care. LEARNING OBJECTIVES/OUTCOMES: After participating in this educational activity, the participant should be better able to:1...
April 2017: Advances in Skin & Wound Care
https://www.readbyqxmd.com/read/28291965/stingless-bee-honey-the-natural-wound-healer-a-review
#16
Mohd Azri Abd Jalil, Abdul Razak Kasmuri, Hazrina Hadi
BACKGROUND: The stingless bee is a natural type of bee that exists in almost every continent. The honey produced by this bee has been widely used across time and space. The distinctive feature of this honey is that it is stored naturally in the pot (cerumen), thus contributing to its beneficial properties, especially in the wound healing process. METHODS: In this article, several studies on stingless bee honey that pointed out the numerous therapeutic profiles of this honey in terms of its antioxidant, antimicrobial, anti-inflammatory, as well as moisturizing properties are reviewed...
March 15, 2017: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/28291372/spotlight-on-the-delivery-of-photosensitizers-different-approaches-for-photodynamic-based-therapies
#17
Diogo Silva Pellosi, Priscila da Costa Carvalho De Jesus, Antonio Claudio Tedesco
Nanomedicine development allowed the discovery of new photosensitizers (PS) and drug delivery systems (DDS) to overcome current issues on phototherapy. Nano-engineered materials have the potential to improve the solubility of PS, control drug pharmacokinetics, decreasing side effects, increasing bioavailability, and overcoming multidrug resistance. A recent approach is the co-delivery of PS with other therapeutic agents in a multimodal platform for synergic and improved results. Areas covered: This paper discusses the delivery of PS-nanostructured platforms for conventional, photothermal, and antimicrobial photodynamic therapies, as well as in a recent therapeutic modality for photobiomodulation, covering applications of cancer diagnosis, targeting to skin pathogens, photoregeneration and wound healing...
March 27, 2017: Expert Opinion on Drug Delivery
https://www.readbyqxmd.com/read/28280524/reactive-oxygen-species-mediated-prostaglandin-e2-contributes-to-acute-response-of-epithelial-injury
#18
Yi-Ping Hu, Yin-Bo Peng, Yi-Fan Zhang, Ying Wang, Wei-Rong Yu, Min Yao, Xiu-Jun Fu
Reactive oxygen species (ROS) generated after tissue injury play a crucial role during wound healing through initiating acute inflammation, clarifying infection and dead tissue, and mediating various intracellular signal transduction. Prostaglandin E2 (PGE2) has been identified as one of the major factors responsible for inflammation and tissue repair. In this study, we tested our hypothesis that ROS produced by damaged human keratinocytes induces the synthesis of PGE2. In vitro epithelial wounding model was used to observe the production of ROS and secretion of PGE2 as well as the involved signal pathway...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28276602/multifactorial-experimental-design-to-optimize-the-anti-inflammatory-and-proangiogenic-potential-of-mesenchymal-stem-cell-spheroids
#19
Kaitlin C Murphy, Jacklyn Whitehead, Patrick C Falahee, Dejie Zhou, Scott I Simon, J Kent Leach
Mesenchymal stem cell therapies promote wound healing by manipulating the local environment to enhance the function of host cells. Aggregation of mesenchymal stem cells (MSCs) into three-dimensional spheroids increases cell survival and augments their anti-inflammatory and proangiogenic potential, yet there is no consensus on the preferred conditions for maximizing spheroid function in this application. The objective of this study was to optimize conditions for forming MSC spheroids that simultaneously enhance their anti-inflammatory and proangiogenic nature...
March 9, 2017: Stem Cells
https://www.readbyqxmd.com/read/28272349/the-influence-of-spirulina-platensis-filtrates-on-caco-2-proliferative-activity-and-expression-of-apoptosis-related-micrornas-and-mrna
#20
Agnieszka Śmieszek, Ewa Giezek, Martyna Chrapiec, Martyna Murat, Aleksandra Mucha, Izabela Michalak, Krzysztof Marycz
Spirulina platensis (SP) is a blue-green microalga that has recently raised attention not only as a nutritional component, but also as a source of bioactivities that have therapeutic effects and may find application in medicine, including cancer treatment. In the present study we determined the cytotoxic effect of S. platensis filtrates (SPF) on human colon cancer cell line Caco-2. Three concentrations of SPF were tested-1.25%, 2.5%, and 5% (v/v). We have found that the highest concentration of SPF exerts the strongest anti-proliferative and pro-apoptotic effect on Caco-2 cultures...
March 7, 2017: Marine Drugs
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