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Excisional Wound Healing In The Mouse

MiJung Kim, You-Sun Lee, Yun-Mi Yoo, Jong-Jin Choi, Ha-Na Kim, Changhee Kang, Ji-Min Yu, Sung-Hwan Moon, Aeri Kim, Chan-Wha Kim
Proliferative and migratory abilities of fibroblasts are essential for wound healing at the skin surface. Cytoplasmic linker-associated protein-2 (CLASP2) was originally found to interact with cytoplasmic linker protein (CLIP)-170. CLASP2 plays important roles in microtubule stabilization and the microtubule-stabilizing activity of CLASP2 depends on its interactions with end binding (EB)-1 and CLIP-170. Although the microtubule-stabilizing role of CLASP2 is well established, the effects of CLASP2 on the migration and proliferation of fibroblasts remain unclear in the context of wound healing...
March 5, 2019: Wound Repair and Regeneration
Xiao Tian Wang, Claire C McKeever, Peter Vonu, Charles Patterson, Paul Y Liu
BACKGROUND: Wound contraction and re-epithelialization over the entire healing process had never been histologically examined daily in diabetic mouse wounds. Correlating morphological characters with molecular changes may be essential to understand the potential mechanism of impeded diabetic wound healing. MATERIALS AND METHODS: In 99 db/db and 63 db/m mice, dorsal-paired 8 mm-diameter wounds were created. Wound contraction and re-epithelialization were histologically analyzed daily-six wounds per group each day...
February 13, 2019: Journal of Surgical Research
Vaishnevi Raj, Stephanie Claudine, Arjunan Subramanian, Kimberley Tam, Arijit Biswas, Ariff Bongso, Chui-Yee Fong
We showed in previous studies that human umbilical cord Wharton's jelly stem cells (hWJSCs) improved the healing rates of excisional and diabetic wounds in the mouse model. As an extension of those studies, we report here the more detailed quantitative histological, immunohistochemical, and genomic evaluation of biopsies from those excisional and diabetic wounds in an attempt to understand the mechanisms of the enhanced wound healing aided by hWJSCs. Bright-field microscopic observations and ImageJ software analysis on histological sections of the excisional and diabetic wound biopsies collected at different time points showed that the thickness of the epidermis and dermis, and positive picrosirius-red stained areas for collagen, were significantly greater in the presence of hWJSCs compared with controls (P < 0...
January 31, 2019: Journal of Cellular Biochemistry
Razieh Dalirfardouei, Khadijeh Jamialahmadi, Amir Hosein Jafarian, Elahe Mahdipour
Wound healing is a complicated process that contains a number of overlapping and consecutive phases, disruption in each of which can cause chronic non-healing wounds. In the current study, we investigated the effects of exosomes as paracrine factors released from menstrual blood-derived mesenchymal stem cells (MenSCs) on wound healing process in diabetic mice. The exosomes were isolated from MenSCs conditioned media using ultracentrifugation and were characterized by SEM and western blotting assay. A full thickness excisional wound was created on the dorsal skin of each streptozotocin-induced diabetic mouse...
January 18, 2019: Journal of Tissue Engineering and Regenerative Medicine
Tamer A E Ahmed, Henri-Pierre Suso, Ayesha Maqbool, Maxwell T Hincke
Non-healing wounds are a major health problem worldwide and a significant cause of morbidity and mortality. Effective treatments for acute and chronic skin wounds are the focus of intensive research. Eggshell membrane (ESM) is a natural proteinaceous by-product of the food industry and is suitable for biomedical applications. The objective of this study was to evaluate processed eggshell membrane powder (PEP) for the promotion of skin wound healing. PEP was characterized using proteomics and bioinformatics...
February 1, 2019: Materials Science & Engineering. C, Materials for Biological Applications
Kamal Hany Hussein, Hani Nasser Abdelhamid, Xiaodong Zou, Heung-Myong Woo
In the present study, we investigated the applications of ultrasonicated graphene oxide (UGO) for bone regeneration and skin wound healing. Ultrasonication of a GO suspension increased the dispersion and stability (by increasing the zeta potential) of the GO suspension. UGO has fewer oxygen-containing groups but still displays excellent water dispersion. The UGO supension showed high biocompatibility for human fetal osteoblast (hFOB cells), human endothelial cells (EA.hy 926 cells), and mouse embryonic fibroblasts...
January 1, 2019: Materials Science & Engineering. C, Materials for Biological Applications
Nicole Edwards, Denis Feliers, Qingwei Zhao, Randolph Stone, Robert Christy, Xingguo Cheng
Chronic wounds complicated by diabetes are a significant clinical issue, and their occurrence is expected to continue to rise due to an increased prevalence of diabetes mellitus, especially type 2 diabetes. Diabetic wounds frequently lead to nonhealing ulcers, and often eventually result in limb amputation due to the high risk of infection of the chronic wound. Here, we present a tissue-engineered treatment that combines a novel electrochemically deposited collagen wound matrix and human adipose-derived stem cells...
October 2018: Journal of Biomaterials Applications
Yun-Ui Bae, Youlim Son, Chang-Hyun Kim, Kwang Seok Kim, Se Hee Hyun, Hyun Goo Woo, Byul A Jee, Jun-Hyuk Choi, Hoon-Ki Sung, Hyung-Chul Choi, So Young Park, Ju-Hyun Bae, Kyung-Oh Doh, Jae-Ryong Kim
Senescent cells accumulate in various tissues over time, and contribute to tissue dysfunction and aging-associated phenotypes. Accumulating evidence suggests that cellular senescence can be inhibited through pharmacological intervention, as well as through treatment with soluble factors derived from embryonic stem cells (ESCs). In an attempt to investigate the anti-senescence factors secreted by ESCs, we analyzed mouse ESC-derived extracellular miRNAs in conditioned medium (CM) via miRNA array analysis. We selected mmu-miR-291a-3p as a putative anti-senescence factor via bioinformatics analysis...
September 15, 2018: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
Corrie L Gallant-Behm, Joseph Piper, Brent A Dickinson, Christina M Dalby, Linda A Pestano, Aimee L Jackson
There is a strong unmet need for new therapeutics to accelerate wound healing across both chronic and acute indications. It is well established that local tissue hypoxia, vascular insufficiency, and/or insufficient angiogenesis contribute to inadequate wound repair in the context of diabetic foot ulcers as well as to other chronic wounds such as venous stasis and pressure ulcers. microRNA-92a-3p (miR-92a) is a potent antiangiogenic miRNA whose inhibition has led to increases in angiogenesis in multiple organ systems, resulting in an improvement in function following myocardial infarction, limb ischemia, vascular injury, and bone fracture...
August 17, 2018: Wound Repair and Regeneration
John Mark McLain, Wateen H Alami, Zachary T Glovak, Chris R Cooley, Susan J Burke, J Jason Collier, Helen A Baghdoyan, Michael D Karlstad, Ralph Lydic
Study Objectives: This study tested the hypothesis that sleep fragmentation (SF) delays wound healing in obese B6.BKS(D)-Leprdb/J (db/db) mice with impaired leptin signaling and type 2 diabetes compared with wild-type C57BL/6J (B6) mice. Methods: Adult male mice (n = 34) were anesthetized and bilateral full-thickness excisional wounds were created on the back of each mouse. Half of the db/db and B6 mice were housed in SF cages equipped with a bar that moved across the cage floor every 2 min, 12 hr/day for 23 days...
November 1, 2018: Sleep
Walison N Silva, Caroline Leonel, Pedro H D M Prazeres, Isadora F G Sena, Daniel A P Guerra, Debora Heller, Ivana M A Diniz, Vitor Fortuna, Akiva Mintz, Alexander Birbrair
Dermal wound healing is the process of repairing and remodeling skin following injury. Delayed or aberrant cutaneous healing poses a challenge for the health care system. The lack of detailed understanding of cellular and molecular mechanisms involved in this process hampers the development of effective targeted treatments. In a recent study, Parfejevs et al.-using state-of-the-art technologies, including in vivo sophisticated Cre/loxP techniques in combination with a mouse model of excisional cutaneous wounding-reveal that Schwann cells induce adult dermal wound healing...
August 11, 2018: Wound Repair and Regeneration
Ji Young Oh, Han Na Suh, Gee Euhn Choi, Hyun Jik Lee, Young Hyun Jung, So Hee Ko, Jun Sung Kim, Chang Woo Chae, Chang-Kyu Lee, Ho Jae Han
BACKGROUND AND PURPOSE: The sonic hedgehog pathway (Shh) plays a central role in maintaining stem cell function and behaviour in various processes related to self-renewal and tissue regeneration. However, the therapeutic effect of Shh on mouse embryonic stem cells (mESCs) has not yet been clearly elucidated. Thus, we investigated the effect of Shh on the regulation of mESC behaviour as well as the effect of Shh-pretreated mESCs in skin wound healing. EXPERIMENTAL APPROACH: The underlying mechanisms of Shh signalling pathway in growth and motility of mESCs were investigated using Western blot analysis, a cell proliferation assay and cell migration assay...
September 2018: British Journal of Pharmacology
Ji Young Oh, Gee Euhn Choi, Hyun Jik Lee, Young Hyun Jung, So Hee Ko, Chang Woo Chae, Jun Sung Kim, Seo Yihl Kim, Jae Ryong Lim, Chang-Kyu Lee, Ho Jae Han
BACKGROUND/AIMS: Glucose plays an important role in stem cell fate determination and behaviors. However, it is still not known how glucose contributes to the precise molecular mechanisms responsible for stem cell migration. Thus, we investigate the effect of glucose on the regulation of the human umbilical cord blood-derived mesenchymal stem cell (hUCB-MSC) migration, and analyze the mechanism accompanied by this effect. METHODS: Western blot analysis, wound healing migration assays, immunoprecipitation, and chromatin immunoprecipitation assay were performed to investigate the effect of high glucose on hUCB-MSC migration...
2018: Cellular Physiology and Biochemistry
Nicholas G Cogan, Alana P Mellers, Bhavi N Patel, Brett D Powell, Manu Aggarwal, Kathleen M Harper, Michael Blaber
We present a mathematical model to quantify parameters of mouse excisional wound healing from photographic data. The equation is a piecewise linear function in log scale that includes key parameters of initial wound radius (R0 ), an initial wound stasis phase (Ti ), and time to wound closure (Tc ); subsequently, these terms permit calculation of a latter active proliferative phase (Tp ), and the healing rate (HR) during this active phase. A daily photographic record of wound healing (utilizing 6 mm diameter splinted excisional wounds) permits the necessary sampling for robust parameter refinement...
March 2018: Wound Repair and Regeneration
B Kurt, N Bilge, M Sözmen, U Aydın, T Önyay, I Özaydın
Wound healing requires cells that increase both collagen production as a result of inflammatory events and regeneration of epithelial tissue. The Plantago species of herbs have been used in traditional treatment of skin disorders and infectious diseases, and digestive, respiratory, reproductive and circulatory conditions. We investigated the efficacy of different concentrations of Plantago lanceolata L. extract (PLE) for wound healing owing to its anti-inflammatory, anti-bacterial, anti-fungal, anti-oxidant, anti-ulcerative, analgesic and immunomodulatory properties...
2018: Biotechnic & Histochemistry: Official Publication of the Biological Stain Commission
Antoine L Carre, Michael S Hu, Aaron W James, Kenichiro Kawai, Michael G Galvez, Michael T Longaker, H Peter Lorenz
BACKGROUND: Acute wound healing is a dynamic process that results in the formation of scar tissue. The mechanisms of this process are not well understood; numerous signaling pathways are thought to play a major role. Here, the authors have identified β-catenin-dependent Wnt signaling as an early acute-phase reactant in acute wound healing and scar formation. METHODS: The authors created 6-mm full-thickness excisional cutaneous wounds on adult β-catenin-dependent Wnt signal (BAT-gal) reporter mice...
March 2018: Plastic and Reconstructive Surgery
Satoshi Nunomura, Yasuhiro Nanri, Masahiro Ogawa, Kazuhiko Arima, Yasutaka Mitamura, Tomohito Yoshihara, Hidetoshi Hasuwa, Simon J Conway, Kenji Izuhara
Periostin is a matricellular protein involved in development, maintenance, and regulation of tissues and organs via by binding to cell surface integrin receptors. Pathologically, periostin plays an important role in the process of wound healing: as a deficiency of the Postn gene delays wound closure and periostin is consistently up-regulated in response to injury and skin diseases. However, the functional role of elevated periostin in the process of wound healing has not been tested. In this study, we generated Postn-transgenic mice under the control of the CAG promoter/enhancer to investigate the effects of constitutive overexpression of full length periostin during its pathophysiological roles...
January 2018: Wound Repair and Regeneration
Si-Qian Gao, Chen Chang, Xiao-Qian Niu, Long-Jian Li, Yan Zhang, Jian-Qing Gao
To investigate the effects of Hydroxysafflor Yellow A (HSYA), which is derived from safflower, on the proliferation, migration and angiogenesis of cells in vitro and its potential efficacy in vivo when topically applied to a diabetic wound. Human umbilical vein endothelial cells (HUVECs) and mouse macrophage cells (RAW264.7) were used to evaluate angiogenesis and anti-inflammatory activities, respectively. The influence of HSYA on the wound scratch assay was investigated in keratinocytes. A splinted excisional wound model in rats with TIDM induced by streptozotocin was used to assess the effects of wound healing...
March 15, 2018: European Journal of Pharmacology
Michael S Hu, Justin Cheng, Mimi R Borrelli, Tripp Leavitt, Graham G Walmsley, Elizabeth R Zielins, Wan Xing Hong, Alexander T M Cheung, Dominik Duscher, Zeshaan N Maan, Dre M Irizarry, Brad Stephan, Fereydoun Don Parsa, Derrick C Wan, Geoffrey C Gurtner, Hermann Peter Lorenz, Michael T Longaker
Objective: Splinting full-thickness cutaneous wounds in mice has allowed for a humanized model of wound healing. Delineating the epithelial edge and assessing time to closure of these healing wounds via macroscopic visualization have remained a challenge. Approach: Double transgenic mice were created by crossbreeding K14-Cre and ROSAmT/mG reporter mice. Full-thickness excisional wounds were created in K14-Cre/ROSAmT/mG mice (n = 5) and imaged using both normal and fluorescent light on the day of surgery, and every other postoperative day (POD) until wound healing was complete...
January 1, 2018: Advances in Wound Care
Christian F Guerrero-Juarez, Aliaksandr A Astrowski, Rabi Murad, Christina T Dang, Vera O Shatrova, Aksana Astrowskaja, Chae Ho Lim, Raul Ramos, Xiaojie Wang, Yuchen Liu, Hye-Lim Lee, Kim T Pham, Tsai-Ching Hsi, Ji Won Oh, Daniel Crocker, Ali Mortazavi, Mayumi Ito, Maksim V Plikus
Large excisional wounds in mice prominently regenerate new hair follicles (HFs) and fat, yet humans are deficient for this regenerative behavior. Currently, wound-induced regeneration remains a clinically desirable, but only partially understood phenomenon. We show that large excisional wounds in rats across seven strains fail to regenerate new HFs. We compared wound transcriptomes between mice and rats at the time of scab detachment, which coincides with the onset of HF regeneration in mice. In both species, wound dermis and epidermis share core dermal and epidermal transcriptional programs, respectively, yet prominent interspecies differences exist...
June 2018: Journal of Investigative Dermatology
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