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Chronic wound healing

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https://www.readbyqxmd.com/read/28817237/dysregulation-of-wound-healing-mechanisms-in-diabetes-and-the-importance-of-negative-pressure-wound-therapy-npwt
#1
Mogher Khamaisi, Sarit Balanson
Diabetes is a serious disease with severe side effects and comorbidities. Diabetic foot with its chronic non-healing ulcers, or diabetic food ulcers (DFU) as they are commonly called, can be devastating, even leading to amputation. Many therapies exist to assist and improve wound healing. One exciting discovery is the use of negative pressure wound therapy (NPWT) as an adjunct to standard treatment. Few studies have substantively explored the molecular mechanisms of NPWT and why we see improved wound healing, a concept that demands more research...
August 17, 2017: Diabetes/metabolism Research and Reviews
https://www.readbyqxmd.com/read/28811680/the-antimicrobial-peptide-human-beta-defensin-3-is-induced-by-platelet-released-growth-factors-in-primary-keratinocytes
#2
Andreas Bayer, Justus Lammel, Mersedeh Tohidnezhad, Sebastian Lippross, Peter Behrendt, Tim Klüter, Thomas Pufe, Jochen Cremer, Holger Jahr, Franziska Rademacher, Regine Gläser, Jürgen Harder
Platelet-released growth factors (PRGF) and its related clinically used formulations (e.g., Vivostat Platelet-Rich Fibrin (PRF®)) contain a variety of chemokines, cytokines, and growth factors and are therefore used to support healing of chronic, hard-to-heal, or infected wounds. Human beta-defensin-3 (hBD-3) is an antimicrobial peptide inducibly expressed in human keratinocytes especially upon wounding. The potent antimicrobial activity of hBD-3 together with its wound closure-promoting activities suggests that hBD-3 may play a crucial role in wound healing...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28810878/classification-of-chronic-radiation-induced-ulcers-in-the-chest-wall-after-surgery-in-breast-cancers
#3
Xiao Ma, Zengqiang Jin, Guojun Li, Wenfeng Yang
BACKGROUND AND PURPOSE: To explore the methods of clinical classification in chronic radiation-induced ulcers in the chest wall (CRUCWs). MATERIALS AND METHODS: A total of 64 patients with CRUCWs were treated. We divided the cases into 3 types (mild, moderate, or severe) according to their clinical manifestations. Conservative treatments, axial-pattern myocutaneous or local flaps, or filleted flaps were applied correspondingly. RESULTS: The cases were divided as follows: mild (n = 11), moderate (n = 45), and severe (n = 8)...
August 15, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28810801/may-dietary-supplementation-augment-respiratory-burst-in-wound-site-inflammatory-cells
#4
Amitava Das, Ryan Dickerson, Piya Das Ghatak, Gayle Gordillo, Scott Chaffee, Abhijoy Saha, Savita Khanna, Sashwati Roy
Persistent infection contributes to wound chronicity. At the wound-site, NADPH oxidase activity in immune cells fights infection to enable the healing process. Fermented Papaya Preparation (FPP) is a carbohydrate-rich nutritional supplement that has demonstrated ability to bolster respiratory burst in experimental rodent systems. In FPP, glucose co-exists with fructose and maltose in addition to multiple other sugar alcohols such as inositol. We have previously reported that FPP supplementation augments wound healing in diabetic mice via improvement of respiratory-burst activity of wound innate immune cells...
August 16, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28810449/the-importance-of-relationships-in-treatment-for-chronic-leg-ulceration
#5
Philippa Tollow, Jane Ogden
Leg ulcers are a hard-to-heal wound that can have a profound impact on the lives of those that they affect. While a significant body of evidence has explored the efficacy of various treatments for leg ulcers, little research has addressed the patient experience of such treatment. A total of 21 participants were recruited for this qualitative interview study, exploring patient's experiences of non-surgical treatment for leg ulcers. Thematic analysis identified two major themes, 'Failure' and 'Powerlessness', as well as the overarching theme of 'Relationships'...
May 1, 2017: Journal of Health Psychology
https://www.readbyqxmd.com/read/28808517/the-mythos-of-laudable-pus-along-with-an-explanation-for-its-origin
#6
Jeffrey A Freiberg
The presence of pus is one of the most easily recognizable signs of an infection. However, for several centuries suppuration, known as 'laudable pus,' was believed to be a sign of a healthy, healing wound. This historical misconception can be explained by the difference in the presentation of a necrotizing soft tissue infection versus other more common skin and soft tissue infections. Chronic wound infections, due to pyogenic bacteria, typically produce large amounts of thick, whitish-yellow pus. On the other hand, necrotizing soft tissue infections, despite their severe mortality and morbidity, are devoid of pus in the traditional sense...
July 2017: Journal of Community Hospital Internal Medicine Perspectives
https://www.readbyqxmd.com/read/28808357/platelet-released-growth-factors-induce-differentiation-of-primary-keratinocytes
#7
Andreas Bayer, Mersedeh Tohidnezhad, Justus Lammel, Sebastian Lippross, Peter Behrendt, Tim Klüter, Thomas Pufe, Holger Jahr, Jochen Cremer, Franziska Rademacher, Regine Gläser, Jürgen Harder
Autologous thrombocyte concentrate lysates, for example, platelet-released growth factors, (PRGFs) or their clinically related formulations (e.g., Vivostat PRF®) came recently into the physicians' focus as they revealed promising effects in regenerative and reparative medicine such as the support of healing of chronic wounds. To elucidate the underlying mechanisms, we analyzed the influence of PRGF and Vivostat PRF on human keratinocyte differentiation in vitro and on epidermal differentiation status of skin wounds in vivo...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28807848/hydroalcoholic-extract-from-bark-of-persea-major-meisn-l-e-kopp-lauraceae-exerts-antiulcer-effects-in-rodents-by-the-strengthening-of-the-gastric-protective-factors
#8
Lincon Bordignon Somensi, Thaise Boeing, Benhur Judah Cury, Viviane Miranda Bispo Steimbach, Rivaldo Niero, Lauro Mera de Souza, Luisa Mota da Silva, Sérgio Faloni de Andrade
ETHOPHARMACOLOGICAL RELEVANCE: The Persea major (Meisn.) L.E. Kopp (Lauraceae) (botanical synonym: Persea pyrifolia (D. Don) Spreng, Persea pyrifolia Nees and Mart., Persea cordata var. major (Meisn.) Mez and Persea willdenovii Kosterm) is a medicinal plant native in the south of Brazil, where is popularly known as Pau de Andrade, Maçaranduba or Abacate-do-Mato. Its barks are commonly used to prepare an infusion which is administered orally or topically to treat ulcers and wounds, respectively...
August 11, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28807666/microrna-132-with-therapeutic-potential-in-chronic-wounds
#9
Xi Li, Dongqing Li, Aoxue Wang, Tongbin Chu, Warangkana Lohcharoenkal, Xiaowei Zheng, Jacob Grünler, Sampath Narayanan, Sofie Eliasson, Eva K Herter, Yang Wang, Yannan Ma, Marcus Ehrström, Liv Eidsmo, Maria Kasper, Andor Pivarcsi, Enikö Sonkoly, Sergiu-Bogdan Catrina, Mona Ståhle, Ning Xu Landén
Chronic wounds represent a major and rising health and economic burden worldwide. There is a continued search towards more effective wound therapy. We found significantly reduced microRNA-132 (miR-132) expression in human diabetic ulcers compared to normal skin wounds, and also in skin wounds of leptin receptor-deficient (db/db) diabetic mice compared to wild-type mice. Local replenishment of miR-132 in the wounds of db/db mice accelerated wound closure effectively, which was accompanied by increased proliferation of wound-edge keratinocytes and reduced inflammation...
August 11, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28805478/production-of-platelet-rich-plasma-gel-from-elderly-patients-under-antithrombotic-drugs-perspectives-in-chronic-wounds-care
#10
M Velier, J Magalon, A Daumas, M Cassar, P Francois, A Ghazouane, C Philandrianos, B Bertrand, C Frere, D Bernot, P Villani, F Dignat George, F Sabatier
Platelet-Rich Plasma (PRP) is an autologous biological therapy obtained by centrifuging the patient's own blood to concentrate platelets. The addition of autologous thrombin and calcium chloride to PRP allows the production of a semi-solid form called PRP gel. PRP gel is increasingly used in a variety of tissue defects and predominantly in the management of non-healing chronic wounds. The topical application of PRP gel seems promising due to the capability of platelets to store and secrete growth factors (GF), fibrin and cytokines, which are essentials for wound healing...
August 14, 2017: Platelets
https://www.readbyqxmd.com/read/28801610/creb3l2-mediated-expression-of-sec23a-sec24d-is-involved-in-hepatic-stellate-cell-activation-through-er-golgi-transport
#11
Shotaro Tomoishi, Shinichi Fukushima, Kentaro Shinohara, Toshiaki Katada, Kota Saito
Hepatic fibrosis is caused by exaggerated wound healing response to chronic injury, which eventually leads to hepatic cirrhosis. Differentiation of hepatic stellate cells (HSCs) to myofibroblast-like cells by inflammatory cytokines is the critical step in fibrosis. This step is accompanied by enlargement of the endoplasmic reticulum (ER) and Golgi apparatus, suggesting that protein synthesis and secretion are augmented in the activated HSCs. However, the process of rearrangement of secretory organelles and their functions remain to be fully elucidated...
August 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28798504/molecular-aspects-of-wound-healing-and-the-rise-of-venous-leg-ulceration-omics-approaches-to-enhance-knowledge-and-aid-diagnostic-discovery
#12
REVIEW
Daniel A Broszczak, Elizabeth R Sydes, Daniel Wallace, Tony J Parker
Chronic wounds, in particular venous leg ulcers (VLU), represent a substantial burden for economies, healthcare systems and societies worldwide. This burden is exacerbated by the recalcitrant nature of these wounds, despite best practice, evidence-based care, which substantially reduces the quality of life of patients. Furthermore, co-morbidities such as diabetes and cardiovascular disease within ageing populations further contribute to the increasing prevalence in developed countries. This review provides an overview of the literature concerning the cellular and molecular mechanisms of wound healing and aspects where this process fails, resulting in a chronic wound...
February 2017: Clinical Biochemist. Reviews
https://www.readbyqxmd.com/read/28797647/matrix-metalloproteinases-the-sculptors-of-chronic-cutaneous-wounds
#13
REVIEW
Venkat Raghavan Krishnaswamy, Dvir Mintz, Irit Sagi
Cutaneous wound healing is a complex mechanism with multiple processes orchestrating harmoniously for structural and functional restoration of the damaged tissue. Chronic non-healing wounds plagued with infection create a major healthcare burden and is one of the most frustrating clinical problems. Chronic wounds are manifested by prolonged inflammation, defective re-epithelialization and haphazard remodeling. Matrix metalloproteinases (MMPs) are zinc dependent enzymes that play cardinal functions in wound healing...
August 7, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28795892/cold-atmospheric-pressure-plasma-for-treatment-of-chronic-wounds-drug-or-medical-device
#14
A Kramer, B R Conway, K Meissner, F Scholz, B H Rauch, A Moroder, A Ehlers, A J Meixner, C-D Heidecke, L I Partecke, M Kietzmann, O Assadian
OBJECTIVE: The use of cold atmospheric pressure plasma (CAPP) as a new therapeutic option to aid the healing of chronic wounds appears promising. Currently, uncertainty exists regarding their classification as medical device or medical drug. Because the classification of CAPP has medical, legal, and economic consequences as well as implications for the level of preclinical and clinical testing, the correct classification is not an academic exercise, but an ethical need. METHOD: A multidisciplinary team of physicians, surgeons, pharmacists, physicists and lawyers has analysed the physical and technical characteristics as well as legal conditions of the biological action of CAPP...
August 2, 2017: Journal of Wound Care
https://www.readbyqxmd.com/read/28795891/experience-using-closed-incision-negative-pressure-wound-therapy-in-sternotomy-patients
#15
B Philip, P McCluskey, J Hinchion
OBJECTIVE: Postoperative delayed wound healing, surgical site infections (SSIs), and other wound complications are associated with increased morbidity and health-care costs. In cardiothoracic surgery, wound complications can have life-threatening consequences. In recent years, negative pressure wound therapy (NPWT) has been applied over closed surgical incisions to help reduce tension and protect from external contamination. We report our initial experiences using a closed incision negative pressure therapy (ciNPT) over clean, closed sternotomy incisions at an Irish tertiary referral centre...
August 2, 2017: Journal of Wound Care
https://www.readbyqxmd.com/read/28795890/point-of-care-fluorescence-imaging-predicts-the-presence-of-pathogenic-bacteria-in-wounds-a-clinical-study
#16
M Y Rennie, L Lindvere-Teene, K Tapang, R Linden
OBJECTIVE: Bacteria in chronic wounds are invisible to the naked eye and can lead to delayed wound healing. Point-of-care bacterial fluorescence imaging illuminates a wound with 405nm light, triggering bacteria to produce red fluorescence and enabling real-time bacterial localisation. Prospective, single-blind clinical trials (clinicaltrials.gov #NCT02682069, #NCT03091361) were conducted to determine the positive predictive value (PPV) of this red fluorescence for detecting bacteria in chronic wounds...
August 2, 2017: Journal of Wound Care
https://www.readbyqxmd.com/read/28795884/results-of-directly-applied-activated-carbon-cloth-in-chronic-wounds-a-preliminary-study
#17
H S Scheer, M Kaiser, U Zingg
OBJECTIVE: Activated carbon (AC) has been used in wound therapy as an active substance inside dressings. Applying AC directly on a wound is a new concept. The aim of this study was to analyse the outcomes of chronic wounds which were managed with directly applied activated carbon knitted cloth (ACC, Zorflex) in Swiss patients. METHOD: A retrospective analysis of the records of all patients with chronic wounds treated with ACC between 1 October 2013 and 31 December 2015 in an outpatient wound clinic...
August 2, 2017: Journal of Wound Care
https://www.readbyqxmd.com/read/28795881/understanding-biofilm-in-practice-a-global-survey-of-health-professionals
#18
T Swanson, R D Wolcott, H Wallis, E J Woodmansey
OBJECTIVE: The aim of this survey was to examine health professionals' views and practices relating to biofilm in chronic wounds. METHOD: A global online survey was conducted to assess the current understanding of biofilm and wound management practices. The survey consisted of 20 questions designed to evaluate health professional knowledge of biofilm, perception and understanding of biofilm behaviour, detection and diagnosis, and treatment. Respondents were classified as 'specialists' if wounds were their primary focus and they developed protocols and determined formularies...
August 2, 2017: Journal of Wound Care
https://www.readbyqxmd.com/read/28795025/sub-chronic-safety-evaluation-of-aqueous-extract-of-alangium-salvifolium-l-f-wangerin-leaves-in-rats
#19
Bhupinder Kapoor, Gagandeep Kaur, Mukta Gupta, Reena Gupta
Conventionally, the juice and extract of Alangium salvifolium leaves have been used for the treatment of diabetes, wound healing, dog bite, and as a poultice in rheumatism. To carry out the sub-chronic toxicity and thereafter safety evaluation of A. salvifolium leaves. The aqueous extract of A. salvifolium leaves was administered orally at the doses of 200, 400, and 800 mg/kg/day for 90 days. All the animals were observed daily for general behavior, changes in body weight, food, and water consumption. At the end of the treatment period, biochemical and hematological parameters were analyzed; and the animals were sacrificed for histopathological examination of heart, lungs, liver, and kidney...
July 2017: Journal of Advanced Pharmaceutical Technology & Research
https://www.readbyqxmd.com/read/28794593/laparoscopic-assisted-percutaneous-nephrolithotomy-in-chronic-kidney-disease-patients-with-ectopic-pelvic-kidney
#20
Sujata K Patwardhan, Umesh Ravikant Shelke, Bhushan P Patil, Yash R Pamecha
PURPOSE: Patients with deranged renal functions have a number of associated factors which can impair healing of wound and increase postoperative morbidity. This study was conducted to assess the problems while managing ectopic pelvic kidney calculi using laparoscopic approach for percutaneous nephrolithotomy (PCNL) in chronic kidney disease patients. SUBJECTS AND METHODS: Patients with calculi in ectopic kidney with increased serum creatinine level secondary to obstruction were included in the study...
July 2017: Urology Annals
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