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Wound healing diabetes

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https://www.readbyqxmd.com/read/29789123/amputation-stump-perfusion-is-predictive-of-post-operative-necrotic-eschar-formation
#1
Gayan S De Silva, Khalid Saffaf, Luis A Sanchez, Mohamed A Zayed
BACKGROUND: A large proportion of patients develop poor amputation stump healing. We hypothesize that Laser-Assisted Fluorescent Angiography (LAFA) can predict inadequate tissue perfusion and healing. METHODS: Over an 8-month period we reviewed all patients who underwent lower extremity amputation and LAFA. We evaluated intra-operative LAFA global and segmental stump perfusion, and post-operative modified Bates-Jensen (mBJS) wound healing scores. RESULTS: In 15 patients, amputation stumps with lower global perfusion demonstrated higher mBJS (P = 0...
May 19, 2018: American Journal of Surgery
https://www.readbyqxmd.com/read/29785265/a-randomized-controlled-trial-of-the-safety-and-efficacy-of-a-topical-gentamicin-collagen-sponge-in-diabetic-patients-with-a-mild-foot-ulcer-infection
#2
Ilker Uçkay, Benjamin Kressmann, Sébastien Di Tommaso, Marina Portela, Heba Alwan, Hubert Vuagnat, Sophie Maître, Christophe Paoli, Benjamin A Lipsky
Objectives: The initial phase of infection of a foot ulcer in a person with diabetes is often categorized as mild. Clinicians usually treat these infections with antimicrobial therapy, often applied topically. Some experts, however, believe that mild diabetic foot ulcer infections will usually heal with local wound care alone, without antimicrobial therapy or dressings. Methods: To evaluate the potential benefit of treatment with a topical antibiotic, we performed a single-center, investigator-blinded pilot study, randomizing (1:1) adult patients with a mild diabetic foot ulcer infection to treatment with a gentamicin-collagen sponge with local care versus local care alone...
2018: SAGE Open Medicine
https://www.readbyqxmd.com/read/29782416/acellular-flowable-matrix-in-the-treatment-of-tunneled-or-cavity-ulcers-in-diabetic-feet-a-preliminary-report
#3
Ferdinando Campitiello, Manfredi Mancone, Angela Della Corte, Raffaella Guerniero, Silvestro Canonico
OBJECTIVE: The authors aimed to explore the feasibility and safety of an advanced, acellular, flowable wound matrix (FWM) in patients with diabetes-related cavity or tunnel lesions involving deep structures. METHODS: Patients with diabetic foot ulcers were hospitalized at the General and Geriatric Surgery Unit of the University of Campania in Naples, Italy, between March 2015 and December 2015. Twenty-three patients with tunneled or cavity ulcers were treated. The lesions were filled with the FWM...
June 2018: Advances in Skin & Wound Care
https://www.readbyqxmd.com/read/29772339/wound-healing-effects-of-a-curcuma-zedoaria-polysaccharide-with-platelet-rich-plasma-exosomes-assembled-on-chitosan-silk-hydrogel-sponge-in-a-diabetic-rat-model
#4
Ning Xu, Lili Wang, Junjie Guan, Chao Tang, Ning He, Wei Zhang, Shiping Fu
One homogeneous polysaccharide (ZWP) was successfully isolated and purified from the rhizomes of Curcuma zedoaria and the aim of present study was to determine the potential of chitosan/silk hydrogel sponge loaded with platelet-rich plasma exosomes (PRP-Exos), ZWP or PRP-Exos/ZWP on wound-healing in diabetic rats. An in vivo diabetic wound healing study showed that separate or combined treatments all resulted in a wound contraction in diabetic rats, as evidenced by a decrease of ulcer and an increase of epidermal thickness, but PRP-Exos/ZWP combination therapy was more successful in wound closing than either PRP-Exos or ZWP single administration...
May 14, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29767913/development-of-coverage-and-its-evaluation-in-the-treatment-of-chronic-wounds
#5
Marcia Diana Umebayashi Zanoti, Helena Megumi Sonobe, Sidney José Lima Ribeiro, Ana Maria Minarelli Gaspar
OBJECTIVES: To describe the development of the bacterial cellulose coating with anti-inflammatory Ibuprofen (BC/Ibu) and to evaluate the cicatrization process with its use in patients with chronic wounds of venous and diabetic etiology. METHODS: Longitudinal descriptive study. The cellulose membrane, cultivated with bacteria Gluconacetobacter xylinus and with incorporation of Ibuprofen, was used in the treatment of patients with chronic wounds in public health services in a Brazilian municipality...
October 2017: Investigación y Educación en Enfermería
https://www.readbyqxmd.com/read/29765329/the-role-of-macrophages-in-acute-and-chronic-wound-healing-and-interventions-to-promote-pro-wound-healing-phenotypes
#6
REVIEW
Paulina Krzyszczyk, Rene Schloss, Andre Palmer, François Berthiaume
Macrophages play key roles in all phases of adult wound healing, which are inflammation, proliferation, and remodeling. As wounds heal, the local macrophage population transitions from predominantly pro-inflammatory (M1-like phenotypes) to anti-inflammatory (M2-like phenotypes). Non-healing chronic wounds, such as pressure, arterial, venous, and diabetic ulcers indefinitely remain in inflammation-the first stage of wound healing. Thus, local macrophages retain pro-inflammatory characteristics. This review discusses the physiology of monocytes and macrophages in acute wound healing and the different phenotypes described in the literature for both in vitro and in vivo models...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29763904/treatment-of-cutaneous-ulcers-with-multilayered-mixed-sheets-of-autologous-fibroblasts-and-peripheral-blood-mononuclear-cells
#7
Takahiro Mizoguchi, Koji Ueno, Yuriko Takeuchi, Makoto Samura, Ryo Suzuki, Tomoaki Murata, Tohru Hosoyama, Noriyasu Morikage, Kimikazu Hamano
BACKGROUND/AIMS: We have developed a mixed-cell sheet consisting of autologous fibroblasts and peripheral blood mononuclear cells with a high potency for angiogenesis and wound healing against refractory cutaneous ulcers in mouse and rabbit models. To increase the effectiveness of the mixed sheet, we developed a multilayered mixed sheet. METHODS: We assessed the therapeutic effects of multilayered sheets on cutaneous ulcers in mice. Growth factors and chemokines were assessed by enzyme-linked immunosorbent assay...
May 10, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29758297/effect-of-negative-pressure-wound-therapy-on-molecular-markers-in-diabetic-foot-ulcers
#8
Rehab A Karam, Noha A Rezk, Tamer M Abdel Rahman, Mohamed Al Saeed
Diabetic foot ulcers are one of the most common complications of diabetes with high morbidity and mortality. Negative pressure wound therapy (NPWT) is one of the treatment modalities that facilitates the wound healing process; however, its molecular mechanism remains unclear. The aim of this study was to investigate the mechanism of action of NPWT in the treatment of diabetic foot ulcers via measuring the tissue expression of genes related to the wound healing process. The study included 40 patients with diabetic foot ulceration, 20 of them received NPWT and the other 20 were a control group treated with advanced moist therapy...
May 11, 2018: Gene
https://www.readbyqxmd.com/read/29756500/sirna-an-alternative-treatment-for-diabetes-and-associated-conditions
#9
Pravin Shende, Chirag Patel
Diabetes is a condition that is not completely treatable but life of a diabetic patient can be smoothed by preventing or delaying the associate conditions like diabetic retinopathy, nephropathy, impaired wound healing process etc. Apart from conventional methods to regulate diabetic condition, new techniques using siRNA have been emerged to prevent the associated conditions. This paper focuses on how siRNA used as a tool to silence the expression of genes which plays critical role in pathogenesis of these conditions...
May 14, 2018: Journal of Drug Targeting
https://www.readbyqxmd.com/read/29753580/acceleration-of-diabetic-wound-healing-with-adipose-derived-stem-cells-endothelial-differentiated-stem-cells-and-topical-conditioned-medium-therapy-in-a-swine-model
#10
Robin F Irons, Kevin W Cahill, Deviney A Rattigan, Joseph H Marcotte, Marc W Fromer, Shaohua Chang, Ping Zhang, Eric M Behling, Kathryn C Behling, Francis J Caputo
OBJECTIVE: The purpose of our study was to investigate the effect of adipose-derived stem cells (ASCs), endothelial-differentiated ASCs (EC/ASCs), and various conditioned media (CM) on wound healing in a diabetic swine model. We hypothesized that ASC-based therapies would accelerate wound healing. METHODS: Diabetes was induced in four Yorkshire swine through intravenous injection of streptozotocin. ASCs were harvested from flank fat and cultured in either M199 or EGM-2 medium...
May 9, 2018: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29752867/topical-application-of-culture-expanded-cd34-umbilical-cord-blood-cells-from-frozen-units-accelerates-healing-of-diabetic-skin-wounds-in-mice
#11
Jennifer Whiteley, Theresa Chow, Hibret Adissu, Armand Keating, Ian M Rogers
Chronic and nonhealing wounds are constant health issues facing patients with type 2 diabetes. As the incidence of type 2 diabetes mellitus (T2DM) increases, the incidence of chronic wounds and amputations will rise. T2DM is associated with peripheral arterial occlusive disease, which leads to the development of nonhealing skin ulcers after minor trauma. Patients develop severe pain limiting their mobility and ability to work and take care of themselves thus putting a significant burden on the family and society...
May 12, 2018: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/29750994/regulation-of-cardiac-fibroblast-mmp2-gene-expression-by-scleraxis
#12
Raghu S Nagalingam, Hamza A Safi, Danah S Al-Hattab, Rushita A Bagchi, Natalie M Landry, Ian M C Dixon, Jeffrey T Wigle, Michael P Czubryt
Remodeling of the cardiac extracellular matrix is responsible for a number of the detrimental effects on heart function that arise secondary to hypertension, diabetes and myocardial infarction. This remodeling consists both of an increase in new matrix protein synthesis, and an increase in the expression of matrix metalloproteinases (MMPs) that degrade existing matrix structures. Previous studies utilizing knockout mice have demonstrated clearly that MMP2 plays a pathogenic role during matrix remodeling, thus it is important to understand the mechanisms that regulate MMP2 gene expression...
May 8, 2018: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/29749466/upregulated-14%C3%A2-3%C3%A2-3%C3%AE-aggravates-restenosis-by-promoting-cell-migration-following-vascular-injury-in-diabetic-rats-with-elevated-levels-of-free-fatty-acids
#13
Lishuai Feng, Chaoran Dou, Jianbo Wang, Chunyu Jiang, Xu Ma, Jingjing Liu
Mono‑unsaturated free fatty acids (FFAs) can serve as a predictive indicator of vascular restenosis following interventional therapy, particularly in individuals with high‑fat diet‑induced type 2 diabetes. However, the pathogenic mechanism remains to be fully elucidated. In the present study, the levels of tyrosine 3‑monooxygenase/tryptophan 5‑monooxygenase activation protein β (YWHAB; also known as 14‑3‑3β), in vascular smooth muscle cells (VSMCs) treated with different concentrations of oleic acid (OA) were examined by reverse transcription‑quantitative polymerase chain reaction and western blot analyses...
May 11, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29748291/microrna-129-and-335-promote-diabetic-wound-healing-by-inhibiting-sp1-mediated-mmp-9-expression
#14
Wei Wang, Chuan Yang, Xiao Yi Wang, Li Yan Zhou, Guo Juan Lao, Dan Liu, Chuan Wang, Meng Die Hu, Ting Ting Zeng, Li Yan, Meng Ren
Diabetic wounds are recalcitrant to healing. However, the mechanism causing this dysfunction is not fully understood. High expression of matrix metalloproteinase-9 (MMP-9) is indicative of poor wound healing. Here, we show that specificity protein-1 (Sp1), a regulator of MMP-9, binds directly to its promoter and enhances its expression. Additionally, we demonstrated that Sp1 is the direct target of two miRNAs, miR-129 and -335, which are significantly downregulated in diabetic skin tissues. In vitro experiments confirmed that miR-129 or -335 overexpression inhibits MMP-9 promoter activity and protein expression by targeting Sp1, whereas the inhibition of these miRNAs has the opposite effect...
May 10, 2018: Diabetes
https://www.readbyqxmd.com/read/29747815/gangliosides-in-diabetic-wound-healing
#15
Duncan Hieu M Dam, Amy S Paller
An organized series of complicated biological and molecular phenomena is required for normal skin wound healing. These processes depend on normal cellular responses to cytokines, growth factors, and other mediators, such as clotting factors, prostaglandins, free radicals, and nitric oxide. In diabetic ulcers, impaired responses to these molecules lead to abnormalities in vascularization, innervation, matrix reconstruction, and reepithelialization of wounds. keratinocyte migration and proliferation on an extracellular matrix is critical in reepithelialization, but the response to growth factors is blunted in diabetes, including the insulin/IGF-1signaling axis...
2018: Progress in Molecular Biology and Translational Science
https://www.readbyqxmd.com/read/29746280/the-impact-of-microbial-communities-on-wound-healing-a-review
#16
Zhenzhen Xu, Henry C Hsia
Chronic, nonhealing wounds place an enormous burden on both the health care system and patients, with no definitive treatments available. There has been increasing evidence that the microbial composition of wounds may play an important role in wound healing. Culture-independent methods for bacterial detection and analysis have revealed the wound microbiome to be much more diverse and complex than culture alone. Such methods primarily rely on targeted amplification and sequencing of various hypervariable regions of the bacterial 16S rRNA for phylogenetic analysis...
April 30, 2018: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/29745944/pegylated-graphene-oxide-mediated-quercetin-modified-collagen-hybrid-scaffold-for-enhancement-of-mscs-differentiation-potential-and-diabetic-wound-healing
#17
Jing Chu, Panpan Shi, Wenxia Yan, Jinping Fu, Zhi Yang, Chengmin He, Xiaoyuan Deng, Hanping Liu
Nanoscale delivery based on polyethylene glycol (PEG)ylated graphene oxide (GO-PEG) merits attention for biomedical applications owing to its functional surface modification, superior solubility/biocompatibility and controllable drug release capability. However, impaired skin regeneration in applications of these fascinating nanomaterials in diabetes is still limited, and critical issues need to be addressed regarding insufficient collagen hyperplasia and inadequate blood supply. Therefore, a high-performance tissue engineering scaffold with biocompatible and biodegradable properties is essential for diabetic wound healing...
May 10, 2018: Nanoscale
https://www.readbyqxmd.com/read/29738298/high-dose-oral-vitamin-c-and-mesenchymal-stem-cells-aid-wound-healing-in-a-diabetic-mouse-model
#18
Susama Chokesuwattanaskul, Supakanda Sukpat, Jatuporn Duangpatra, Saranya Buppajarntham, Pakanat Decharatanachart, Apiwat Mutirangura, Suthiluk Patumraj
OBJECTIVE: This study sought to determine the effects of oral vitamin C (VitC) and mesenchymal stem cells (MSCs) on wound healing in diabetic nude mice. METHOD: Bilateral, full-skin thickness wounds were created as an in vivo wound model in BALB/C diabetic nude mice. The mice were separated into five groups: control (CON); diabetes mellitus (DM, from a streptozotocin injection); DM treated with MSCs (DM+MSCs); DM treated with VitC (DM+VitC), and DM treated with MSCs and VitC (DM+MSCs+VitC)...
May 2, 2018: Journal of Wound Care
https://www.readbyqxmd.com/read/29738296/microcurrent-as-an-adjunct-therapy-to-accelerate-chronic-wound-healing-and-reduce-patient-pain
#19
Harikrishna K R Nair
OBJECTIVE: The primary aim is to assess the efficacy of microcurrent, a form of electrical stimulation, as an adjunct therapy in accelerating healing in chronic wounds by reducing wound size and pain level. The secondary aim is to assess the qualitative changes in these parameters: inflammatory symptoms, vasodilation, sleep quality, gait and frequency of bowel movement. METHOD: Eligible patients with chronic wounds were enrolled between March and June 2016, from the Wound Care Unit, Hospital Kuala Lumpur in this consecutive case series...
May 2, 2018: Journal of Wound Care
https://www.readbyqxmd.com/read/29738294/clinical-application-of-a-3d-printed-scaffold-in-chronic-wound-treatment-a-case-series
#20
Haining Sun, Huayao Lv, Fanghui Qiu, Duolun Sun, Yue Gao, Ning Chen, YongKe Zheng, Kunxue Deng, Yaya Yang, Haitao Zhang, Tao Xu, Dongni Ren
OBJECTIVE: This case series evaluates the safety and effectiveness of 3D-printed scaffold in chronic wounds. The scaffold is a composite of natural and synthetic materials, and can be prepared in the form of powder or membrane. METHOD: We recruited patients with pressure ulcera (PU) and/or a diabetic foot ulcers (DFU). We used two methods: 3D-printed scaffolds alone, or 3D-printing powder mixed with platelet-rich fibrinogen (PRF). Clinicians and patients were asked to rate the scaffold's ease of application and comfort during use...
May 2, 2018: Journal of Wound Care
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