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Vascular wound

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https://www.readbyqxmd.com/read/29147666/sympathetic-denervation-accelerates-wound-contraction-but-inhibits-reepithelialization-and-pericyte-proliferation-in-diabetic-mice
#1
Zhifang Zheng, Yu Wan, Yishu Liu, Yu Yang, Jianbing Tang, Wenhua Huang, Biao Cheng
Previous studies focused on the effects of sympathetic denervation with 6-hydroxydopamine (6-OHDA) on nondiabetic wounds, but the effects of 6-OHDA on diabetic wounds have not been previously reported. In this study, treated mice received intraperitoneal 6-OHDA, and control mice received intraperitoneal injections of normal saline. Full-thickness wounds were established on the backs of mice. The wounds were sectioned (four mice per group) for analysis at 2, 5, 7, 10, 14, 17, and 21 days after injury. The wound areas in the control group were larger than those in the treatment group...
2017: Journal of Diabetes Research
https://www.readbyqxmd.com/read/29147477/vanishing-vasculitis-a-case-of-acute-necrotic-skin-findings-without-pathologic-features-of-vasculitis-from-adulterated-cocaine
#2
Adnan Asif Parvez Ghias, Patrick Brine
While the usage of illicit drugs in itself carries significant health risks and associated toxicities, drugs that are adulterated to give them volume, alter their psychogenic properties, and make them cheaper to produce are to be considered even more dangerous. Cocaine is one of them, and it is now most commonly being adulterated with levamisole. We report a case of a 37-year-old female with the chief complaint of painful skin lesions and wounds on both of her upper and lower extremities for three weeks duration...
2017: Journal of Community Hospital Internal Medicine Perspectives
https://www.readbyqxmd.com/read/29146749/statins-promote-cardiac-infarct-healing-by-modulating-endothelial-barrier-function-revealed-by-contrast-enhanced-magnetic-resonance-imaging
#3
Geert J Leenders, Mirjam B Smeets, Maaike van den Boomen, Monique Berben, Miranda Nabben, Dianne van Strijp, Gustav J Strijkers, Jeanine J Prompers, Fatih Arslan, Klaas Nicolay, Katrien Vandoorne
OBJECTIVE: The endothelium has a crucial role in wound healing, acting as a barrier to control transit of leukocytes. Endothelial barrier function is impaired in atherosclerosis preceding myocardial infarction (MI). Besides lowering lipids, statins modulate endothelial function. Here, we noninvasively tested whether statins affect permeability at the inflammatory (day 3) and the reparative (day 7) phase of infarct healing post-MI using contrast-enhanced cardiac magnetic resonance imaging...
November 16, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/29137568/first-dorsal-metatarsal-artery-perforator-flap-to-cover-great-toe-defect
#4
Roongsak Limthongthang, Perajit Eamsobhana
BACKGROUND: There were very few options available for distal foot and toe defects that required a vascularized flap for coverage. As such, the use of a free flap was often justified in this region of the foot. The use of perforator flaps has created a new subset of local tissue transfer alternatives that increases the potential that the difficulties associated with microvascular tissue transfers could be avoided. The first dorsal metatarsal artery (FDMA) perforator flap was one variant of this new type of tissue transfer...
September 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/29131001/atorvastatin-calcium-inhibits-pdgf-%C3%AE-%C3%AE-induced-proliferation-and-migration-of-vsmcs-through-the-g0-g1-cell-cycle-arrest-and-suppression-of-activated-pdgfr%C3%AE-pi3k-akt-signaling-cascade
#5
Shuang Chen, Siyuan Dong, Zhao Li, Xiaofan Guo, Naijin Zhang, Bo Yu, Yingxian Sun
BACKGROUND/AIMS: Abnormal proliferation of vascular smooth muscle cells (VSMCs) is a hallmark of vascular lesions, such as atherosclerosis and restenosis. PDGF-ββ, an isoform of PDGF (platelet-derived growth factor), has been demonstrated to induce proliferation and migration of VSMCs. Atorvastatin calcium, a selective inhibitor of 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase, has favorable protective effects on VSMCs. This study examined the effects of atorvastatin calcium on the proliferation and migration of PDGF-ββ-treated VSMCs, as well as its underlying mechanisms...
November 9, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29130610/the-effects-of-icariin-on-wound-healing-of-extraction-sites-with-administration-of-zoledronic-and-dexamethasone-a-rat-model-study
#6
Jie Liu, Nikos Mattheos, Cheng Su, Chuanxi Deng, Nanyu Luo, Zekun Wang, Hua Tang
OBJECTIVE: This study was intended to investigate the effects of Icariin on the healing of tooth extraction sites under systemic administration of Zoledronic and Dexamethasone. METHOD: Thirty female rats underwent bilateral ovariectomy and were randomly assigned to 5 groups: SS group received weekly injection of saline while ZD, ZD+LICA, ZD+MICA and ZD+HICA groups received Zoledronic with Dexamethasone for 8 weeks. One week later, mandibular first molars were extracted in all groups...
November 11, 2017: Journal of Oral Pathology & Medicine
https://www.readbyqxmd.com/read/29129486/a-nationwide-analysis-of-re-exploration-after-liver-transplant
#7
Zhobin Moghadamyeghaneh, Mahmoud Alameddine, Joshua S Jue, Giselle Guerra, Gennaro Selvaggi, Seigo Nishida, J Fan, Thiago Beduschi, Rodrigo Vianna
BACKGROUND: A retrospective review to investigate rate and outcomes of re-exploration following liver transplantation in the United States. METHODS: The NIS database was used to examine outcomes of patients who underwent re-exploration following liver transplantation from 2002 to 2012. Multivariate regression analysis was performed to compare outcomes of patients with and without reoperation. RESULTS: We sampled a total of 12,075 patients who underwent liver transplantation...
November 9, 2017: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/29128347/routine-use-of-pico-dressings-may-reduce-overall-groin-wound-complication-rates-following-peripheral-vascular-surgery
#8
Christina A Fleming, Mariya Kuteva, Karen O'Hanlon, Gavin O'Brien, Gerald McGreal
BACKGROUND: Approximately 19% of morbidity in peripheral vascular surgery is attributable to wound complications, which can result in delayed healing, but also arterial or graft infection leading to limb loss and even mortality in extreme cases. AIM: To determine whether groin wound complications were reduced following the routine introduction of PICO negative pressure wound therapy dressings (Smith & Nephew, Hull, England) in patients who had peripheral vascular surgery...
November 8, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/29126421/peroneal-artery-perforator-flap-for-the-treatment-of-chronic-lower-extremity-wounds
#9
Liang Cheng, Xiaqing Yang, Tingxiang Chen, Zhijie Li
BACKGROUND: Reconstruction of chronic lower extremity wounds remains challenging. These wounds are mainly associated with diabetes mellitus, infections, and osteomyelitis. Although several reconstructive techniques are available, the peroneal artery perforator flap has unique advantages. METHODS: In this study, we discuss our experiences with peroneal artery perforator flaps in 55 patients who had suffered from chronic lower limb wounds. The size of the defect, comorbidities, etiology, flap size, and complications were recorded and analyzed based on a retrospective chart review...
November 10, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29124400/characterization-of-m1-and-m2-polarization-of-macrophages-in-vascularized-human-dermo-epidermal-skin-substitutes-in-vivo
#10
Agnes S Klar, Katarzyna Michalak-Mićka, Thomas Biedermann, Claudia Simmen-Meuli, Ernst Reichmann, Martin Meuli
AIMS AND OBJECTIVES: Vascularized bio-engineered human dermo-epidermal skin substitutes (vascDESS) hold promise for treating burn patients, including those with severe full-thickness wounds. We have previously shown that vascDESS promote wound healing by enhanced influx of macrophages and granulocytes. Immediately following transplantation, macrophages infiltrate the graft and differentiate into a pro-inflammatory (M1) or a pro-healing M2 phenotype. The aim of this study was to characterize the activation state of macrophages infiltrating skin transplants at distinct time points following transplantation...
November 9, 2017: Pediatric Surgery International
https://www.readbyqxmd.com/read/29123273/in-vivo-imaging-of-the-microvasculature-of-the-soft-tissue-margins-of-osteonecrotic-jaw-lesions
#11
P Bastos, V Patel, F Festy, N Hosny, R J Cook
Introduction Given the increasing incidence of medication-related jaw osteonecrosis, and recognition of the mucosal blood supply's importance, we have developed a non-invasive Real Time Optical Vascular Imaging (RTOVI) instrument. Imaging the red blood cells within the sub-mucosal capillary networks demonstrates the microcirculatory anatomy. We report a small trial, demonstrating the technique's viability, examining mucosal microcirculatory changes adjacent to osteonecrotic lesions.Aims Imaging the microvasculature of soft tissue margins of patients' exposed necrotic bone lesions in situ was intended to provide unique observational as well as quantitative data, using an image analysis routine, based on ImageJ software...
November 10, 2017: British Dental Journal
https://www.readbyqxmd.com/read/29121845/improving-outcomes-for-lower-extremity-amputations-using-intraoperative-fluorescent-angiography-to-predict-flap-viability
#12
Andrew E Yang, Charles A Hartranft, Alisha Reiss, Charles R Holden
OBJECTIVES: Nearly 25% of vascular surgery patients operated on for peripheral vascular disease are readmitted within 30 days. Development of adjuncts to minimize wound complications remains an area of great interest. Here, we present our experience with intraoperative fluorescent angiography (IFA) as a tool to predict skin flap viability following lower extremity amputations (LEAs). METHODS: Experience with IFA using indocyanine green (ICG) dye was reviewed retrospectively at a single institution...
January 1, 2017: Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/29120855/the-application-of-l-prp-in-aids-patients-with-crural-chronic-ulcers-a-pilot-study
#13
Agata Cieslik-Bielecka, Rafał Skowroński, Magdalena Jędrusik-Pawłowska, Marcin Pierchała
Nonhealing wounds or skin ulcerations are the result of insufficient repair and destruction of a local healing potential. Opportunistic infections which cause a lot of ulcer complications influence the worsening general condition of patients with AIDS, ultimately leading to death. The chronicity of the condition and poor results of conventional therapy have prompted the search for new methods of treatment. We have examined venous or arteriovenous insufficiency-related extensive crural ulcers in AIDS patients...
November 6, 2017: Advances in Medical Sciences
https://www.readbyqxmd.com/read/29118903/mir-665-regulates-vsmcs-proliferation-via-targeting-fgf9-and-mef2d-and-modulating-activities-of-wnt-%C3%AE-catenin-signaling
#14
Kai Li, Jin Pan, Jianjun Wang, Fengrui Liu, Li Wang
Abnormal proliferation of vascular smooth muscle cells (VSMCs) contributes to the development of cardiovascular diseases. Studies have showed the great impact of microRNAs (miRNAs) on the cell proliferation in VSMCs. This study examined the in vitro functional roles of miR-665 in the VSMCs and explored the underlying molecular mechanisms. The mRNA and protein expression levels were determined by qRT-PCR and western blot assays, respectively. CCK-8, transwell invasion and wound healing assays were performed to measure VSMCs proliferation, invasion and migration, respectively...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/29115601/ginsenoside-rg3-targets-cancer-stem-cells-and-tumor-angiogenesis-to-inhibit-colorectal-cancer-progression-in-vivo
#15
Yu-Chen Tang, Yan Zhang, Jin Zhou, Qiaoming Zhi, Meng-Yao Wu, Fei-Ran Gong, Meng Shen, Lu Liu, Min Tao, Bairong Shen, Dong-Mei Gu, Jie Yu, Meng-Dan Xu, Yuan Gao, Wei Li
Anti-angiogenic therapy has been successfully applied to treat colorectal cancer (CRC). Ginsenoside Rg3, derived from the Chinese herb ginseng, has anti-vascularization effects and can inhibit tumor growth and metastasis, and can sensitize cancer cells to chemotherapy. Therefore, in the present study, we investigated whether Rg3 could be appropriate for CRC treatment. Growth of CRC cells was assessed by an MTT (methyl thiazolyl tetrazolium) assay in vitro and using orthotopic xenograft models in vivo. mRNA expression was evaluated using real-time PCR...
November 1, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/29114540/angiogenesis-cancer-and-vascular-aging
#16
REVIEW
Junji Moriya, Tohru Minamino
Several lines of evidence have revealed that the angiogenic response to ischemic injury declines with age, which might account for the increased morbidity and mortality of cardiovascular disease (CVD) among the elderly. While impairment of angiogenesis with aging leads to delayed wound healing or exacerbation of atherosclerotic ischemic diseases, it also inhibits the progression of cancer. Age-related changes of angiogenesis have been considered to at least partly result from vascular aging or endothelial cell senescence...
2017: Frontiers in Cardiovascular Medicine
https://www.readbyqxmd.com/read/29113984/cardiovascular-complications-over-5-years-and-their-association-with-survival-in-the-gerodiab-cohort-of-elderly-french-patients-with-type-2-diabetes
#17
Bernard Bauduceau, Jean-Pierre Le Floch, Serge Halimi, Christiane Verny, Jean Doucet
OBJECTIVE: The GERODIAB study is a multicenter prospective observational study performed over 5 years in French patients aged 70 years or above with type 2 diabetes. This report deals with their cardiovascular complications and their relationship with survival. RESEARCH DESIGN AND METHODS: Consecutive patients (n = 987, median age = 77 years) were included from 56 diabetes centers over 1 year. Individual characteristics, history and complications of diabetes, geriatric factors, and clinical and biological parameters were recorded...
November 7, 2017: Diabetes Care
https://www.readbyqxmd.com/read/29111069/chitosan-and-thiolated-chitosan-novel-therapeutic-approach-for-preventing-corneal-haze-after-chemical-injuries
#18
Forouhe Zahir-Jouzdani, Mirgholamreza Mahbod, Masoud Soleimani, Faezeh Vakhshiteh, Ehsan Arefian, Saeed Shahosseini, Rasoul Dinarvand, Fatemeh Atyabi
Corneal haze, commonly caused by deep physical and chemical injuries, can greatly impair vision. Growth factors facilitate fibroblast proliferation and differentiation, which leads to haze intensity. In this study, the potential effect of chitosan (CS) and thiolated-chitosan (TCS) nanoparticles and solutions on inhibition of fibroblast proliferation, fibroblast to myofibroblast differentiation, neovascularization, extracellular matrix (ECM) deposition, and pro-fibrotic cytokine expression was examined. Transforming growth factor beta-1 (TGFβ1) was induced by interleukin-6 (IL6) in human corneal fibroblasts and expression levels of TGFβ1, Platelet-derived growth factor (PDGF), α-smooth muscle actins (α-SMA), collagen type I (Col I), fibronectin (Fn) and vascular endothelial growth factor (VEGF) were quantified using qRT-PCR...
January 1, 2018: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29108083/-pedicled-omentum-flaps-in-the-management-of-deep-sternal-wound-infections
#19
Nick Spindler, Christian Etz, Martin Misfeld, Christoph Josten, Michael Borger, Friedrich Wilhelm Mohr, Stefan Langer
Aim Coverage of a deep sternal wound infection with a greater omentum flap. Due to a persistent infection caused by an infected aortic prosthesis, the primarily performed reconstruction with a latissimus dorsi flap had to be revised, and an alternative solution had to be found. Indication A deep sternal wound infection is a rare but devastating complication following median sternotomy. If the commonly used muscle flap is not sufficient and artificial material is still present in the wound, for instant drivelines or a vascular prosthesis, the greater omentum flap is a useful option due to its immunologic capacity...
November 6, 2017: Zentralblatt Für Chirurgie
https://www.readbyqxmd.com/read/29107761/improved-limb-salvage-for-patients-with-vascular-disease-and-tissue-loss-associated-with-new-model-of-provision-targeted-at-the-diabetic-foot
#20
Dean T Williams, Anna Powell-Chandler, Quratulain Qureshi, Aeliya Zaidi, Christopher J Whitaker
AIMS: The establishment of a vascular surgeon-led emergency diabetic foot service in 2006 has evolved to provide lower limb wound care for patients with and without diabetes. We aimed to determine whether the service was associated with sustained, improved limb salvage rates for the whole population, analyse key aspects of service provision and compare outcomes against published studies. METHODS: The vascular unit serves a largely rural population of approximately 240,000...
October 28, 2017: Diabetes Research and Clinical Practice
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