Expression of MMP1 in Surgical and Radiation-Impaired Wound Healing and Its Effects on the Healing Process

2002 ◽  
Vol 21 (1) ◽  
pp. 8 ◽  
Author(s):  
Qingyang Gu ◽  
Dewen Wang ◽  
Yabing Gao ◽  
Jie Zhou ◽  
Ruiyun Peng ◽  
...  
Keyword(s):  
Wound Healing ◽  
Healing Process ◽  
Impaired Wound Healing

scholarly journals Keratin Scaffolds Containing Casomorphin Stimulate Macrophage Infiltration and Accelerate Full-Thickness Cutaneous Wound Healing in Diabetic Mice

Molecules ◽  
2021 ◽  
Vol 26 (9) ◽  
pp. 2554
Author(s):  
Marek Konop ◽  
Anna K. Laskowska ◽  
Mateusz Rybka ◽  
Ewa Kłodzińska ◽  
Dorota Sulejczak ◽  
...  
Keyword(s):  
Wound Healing ◽  
Wound Dressing ◽  
Healing Process ◽  
Skin Wound ◽  
Wound Healing Process ◽  
Diabetic Mice ◽  
Full Thickness ◽  
Skin Wound Healing ◽  
Impaired Wound Healing

Impaired wound healing is a major medical challenge, especially in diabetics. Over the centuries, the main goal of tissue engineering and regenerative medicine has been to invent biomaterials that accelerate the wound healing process. In this context, keratin-derived biomaterial is a promising candidate due to its biocompatibility and biodegradability. In this study, we evaluated an insoluble fraction of keratin containing casomorphin as a wound dressing in a full-thickness surgical skin wound model in mice (n = 20) with iatrogenically induced diabetes. Casomorphin, an opioid peptide with analgesic properties, was incorporated into keratin and shown to be slowly released from the dressing. An in vitro study showed that keratin-casomorphin dressing is biocompatible, non-toxic, and supports cell growth. In vivo experiments demonstrated that keratin-casomorphin dressing significantly (p < 0.05) accelerates the whole process of skin wound healing to the its final stage. Wounds covered with keratin-casomorphin dressing underwent reepithelization faster, ending up with a thicker epidermis than control wounds, as confirmed by histopathological and immunohistochemical examinations. This investigated dressing stimulated macrophages infiltration, which favors tissue remodeling and regeneration, unlike in the control wounds in which neutrophils predominated. Additionally, in dressed wounds, the number of microhemorrhages was significantly decreased (p < 0.05) as compared with control wounds. The dressing was naturally incorporated into regenerating tissue during the wound healing process. Applied keratin dressing favored reconstruction of more regular skin structure and assured better cosmetic outcome in terms of scar formation and appearance. Our results have shown that insoluble keratin wound dressing containing casomorphin supports skin wound healing in diabetic mice.

scholarly journals Migration and Proliferation Effects of Thymoquinone-Loaded Nanostructured Lipid Carrier (TQ-NLC) and Thymoquinone (TQ) on In Vitro Wound Healing Models

2019 ◽  
Vol 2019 ◽  
pp. 1-14 ◽  
Author(s):  
Henna Roshini Alexander ◽  
Sharifah Sakinah Syed Alwi ◽  
Latifah Saiful Yazan ◽  
Fatin Hanani Zakarial Ansar ◽  
Yong Sze Ong
Keyword(s):  
Wound Healing ◽  
Nigella Sativa ◽  
Drug Carrier ◽  
Healing Process ◽  
Diabetic Patients ◽  
Nanostructured Lipid Carrier ◽  
Impaired Wound Healing ◽  
And Migration ◽  
Proliferation And Migration

Wound healing is a regulated biological event that involves several processes including infiltrating leukocyte subtypes and resident cells. Impaired wound healing is one of the major problems in diabetic patients due to the abnormal physiological changes of tissues and cells in major processes. Thymoquinone, a bioactive compound found in Nigella sativa has been demonstrated to possess antidiabetic, anti-inflammatory, and antioxidant effects. Today, the rapidly progressing nanotechnology sets a new alternative carrier to enhance and favour the speed of healing process. In order to overcome its low bioavailability, TQ is loaded into a colloidal drug carrier known as a nanostructured lipid carrier (NLC). This study aimed to determine the effect of TQ-NLC and TQ on cell proliferation and migration, mode of cell death, and the antioxidant levels in normal and diabetic cell models, 3T3 and 3T3-L1. Cytotoxicity of TQ-NLC and TQ was determined by MTT assay. The IC10 values obtained for 3T3-L1 treated with TQ-NLC and TQ for 24 hours were 4.7 ± 3.3 and 5.3 ± 0.6 μM, respectively. As for 3T3, the IC10 values obtained for TQ-NLC and TQ at 24 hours were 4.3 ± 0.17 and 3.9 ± 2.05 μM, respectively. TQ-NLC was observed to increase the number of 3T3 and 3T3-L1 healthy cells (87–95%) and gradually decrease early apoptotic cells in time- and dose-dependant manner compared with TQ. In the proliferation and migration assay, 3T3-L1 treated with TQ-NLC showed higher proliferation and migration rate (p<0.05) compared with TQ. TQ-NLC also acted as an antioxidant by reducing the ROS levels in both cells after injury at concentration as low as 3 μM. Thus, this study demonstrated that TQ-NLC has better proliferation and migration as well as antioxidant effect compared with TQ especially on 3T3-L1 which confirms its ability as a good antidiabetic and antioxidant agent.

Impaired wound healing in embryonic and adult mice lacking vimentin

2000 ◽  
Vol 113 (13) ◽  
pp. 2455-2462 ◽  
Author(s):  
B. Eckes ◽  
E. Colucci-Guyon ◽  
H. Smola ◽  
S. Nodder ◽  
C. Babinet ◽  
...  
Keyword(s):  
Wound Healing ◽  
Healing Process ◽  
Wild Type ◽  
Impaired Wound Healing ◽  
Wound Site ◽  
Adult Mice ◽  
Tractional Forces ◽  
Filament Network ◽  
Vimentin Intermediate Filament

It is generally assumed that the vimentin intermediate filament network present in most mesenchymally-derived cells is in part responsible for the strength and integrity of these cells, and necessary for any tissue movements that require the generation of significant tractional forces. Surprisingly, we have shown that transgenic KO mice deficient for vimentin are apparently able to undergo embryonic development absolutely normally and go onto develop into adulthood and breed without showing any obvious phenotype. However, fibroblasts derived from these mice are mechanically weak and severely disabled in their capacity to migrate and to contract a 3-D collagen network. To assess whether these functions are necessary for more challenging tissue movements such as those driving in vivo tissue repair processes, we have analysed wound healing ability in wild-type versus vimentin-deficient embryos and adult mice. Wounds in vimentin-deficient adult animals showed delayed migration of fibroblasts into the wound site and subsequently retarded contraction that correlated with a delayed appearance of myofibroblasts at the wound site. Wounds made to vimentin-deficient embryos also failed to heal during the 24 hour culture period it takes for wild-type embryos to fully heal an equivalent wound. By DiI marking the wound mesenchyme and following its fate during the healing process we showed that this impaired healing is almost entirely due to a failure of mesenchymal contraction at the embryonic wound site. These observations reveal an in vivo phenotype for the vimentin-deficient mouse, and challenge the dogma that key morphogenetic events occurring during development require generation of significant tractional forces by mesenchymal cells.

scholarly journals An Intelligent and Smart Environment Monitoring System for Healthcare

2019 ◽  
Vol 9 (19) ◽  
pp. 4172 ◽  
Author(s):  
Hina Sattar ◽  
Imran Sarwar Bajwa ◽  
Riaz Ul-Amin ◽  
Aqsa Mahmood ◽  
Waheed Anwar ◽  
...  
Keyword(s):  
Wound Healing ◽  
Monitoring System ◽  
Wound Care ◽  
Healing Process ◽  
Research Work ◽  
Wound Healing Process ◽  
Wound Surface ◽  
Environment Monitoring ◽  
Environment Effect ◽  
Impaired Wound Healing

Skin wound healing is influenced by two kinds of environment i.e., exterior environment that is nearby to wound surface and interior environment that is the environment of the adjacent part under wound surface. Both types of environment play a vital role in wound healing, which may contribute to continuous or impaired wound healing. Although, different previous studies provided wound care solutions, but they focused on single environmental factors either wound moisture level, pH value or healing enzymes. Practically, it is insignificant to consider environmental effect by determination of single factors or two, as both types of environment contain a lot of other factors which must be part of investigation e.g., smoke, air pollution, air humidity, temperature, hydrogen gases etc. Also, previous studies didn’t classify overall healing either as continuous or impaired based on exterior environment effect. In current research work, we proposed an effective wound care solution based on exterior environment monitoring system integrated with Neural Network Model to consider exterior environment effect on wound healing process, either as continuous or impaired. Current research facilitates patients by providing them intelligent wound care solution to monitor and control wound healing at their home.

Micronutrients and Natural Compounds Status and Their Effects on Wound Healing in the Diabetic Foot Ulcer

2017 ◽  
Vol 16 (4) ◽  
pp. 244-250 ◽  
Author(s):  
Kanokwan Kulprachakarn ◽  
Sakaewan Ounjaijean ◽  
Jukkrit Wungrath ◽  
Raj Mani ◽  
Kittipan Rerkasem
Keyword(s):  
Wound Healing ◽  
Diabetic Foot ◽  
Healing Process ◽  
Foot Ulcer ◽  
Diabetic Foot Ulcer ◽  
Herbal Remedies ◽  
Current Evidence ◽  
Wound Healing Process ◽  
Impaired Wound Healing ◽  
Wide Range

The diabetic foot ulcer (DFU) is an invariably common complication of diabetes mellitus, it is also a significant cause of amputation as well as extended hospitalization. As most patients with DFU suffer from malnutrition, which has been related to improper metabolic micronutrients status, alterations can affect impaired wound healing process. Micronutrients and herbal remedies applications present a wide range of health advantages to patients with DFU. The purpose of this review is to provide current evidence on the potential effect of dietary supplementations such as vitamins A, C, D, E, magnesium, zinc, copper, iron, boron, and such naturally occurring compounds as Aloe vera, Naringin, and Radix Astragali (RA) and Radix Rehmanniae (RR) in the administration of lower extremity wounds, especially in DFU, and to present some insights for applications in the treatment of DFU patients in the future.

Methylglyoxal administration induces diabetes-like microvascular changes and perturbs the healing process of cutaneous wounds

2005 ◽  
Vol 109 (1) ◽  
pp. 83-95 ◽  
Author(s):  
Jorge BERLANGA ◽  
Danay CIBRIAN ◽  
Isabel GUILLÉN ◽  
Freya FREYRE ◽  
José S. ALBA ◽  
...  
Keyword(s):  
Wound Healing ◽  
Endothelial Cells ◽  
Growth Factor ◽  
Transforming Growth Factor ◽  
Prolonged Exposure ◽  
Healing Process ◽  
Vascular Complications ◽  
Tissue Growth ◽  
Protein Glycation ◽  
Impaired Wound Healing

Increased formation of MG (methylglyoxal) and related protein glycation in diabetes has been linked to the development of diabetic vascular complications. Diabetes is also associated with impaired wound healing. In the present study, we investigated if prolonged exposure of rats to MG (50–75 mg/kg of body weight) induced impairment of wound healing and diabetes-like vascular damage. MG treatment arrested growth, increased serum creatinine, induced hypercholesterolaemia (all P<0.05) and impaired vasodilation (P<0.01) compared with saline controls. Degenerative changes in cutaneous microvessels with loss of endothelial cells, basement membrane thickening and luminal occlusion were also detected. Acute granulation appeared immature (P<0.01) and was associated with an impaired infiltration of regenerative cells with reduced proliferative rates (P<0.01). Immunohistochemical staining indicated the presence of AGEs (advanced glycation end-products) in vascular structures, cutaneous tissue and peripheral nerve fibres. Expression of RAGE (receptor for AGEs) appeared to be increased in the cutaneous vasculature. There were also pro-inflammatory and profibrotic responses, including increased IL-1β (interleukin-1β) expression in intact epidermis, TNF-α (tumour necrosis factor-α) in regions of angiogenesis, CTGF (connective tissue growth factor) in medial layers of arteries, and TGF-β (transforming growth factor-β) in glomerular tufts, tubular epithelial cells and interstitial endothelial cells. We conclude that exposure to increased MG in vivo is associated with the onset of microvascular damage and other diabetes-like complications within a normoglycaemic context.

scholarly journals The Small Molecule NLRP3 Inflammasome Inhibitor MCC950 Does Not Alter Wound Healing in Obese Mice

2018 ◽  
Vol 19 (11) ◽  
pp. 3289 ◽  
Author(s):  
James Lee ◽  
Avril Robertson ◽  
Matthew Cooper ◽  
Kiarash Khosrotehrani
Keyword(s):  
Wound Healing ◽  
Small Molecule ◽  
Nlrp3 Inflammasome ◽  
Chronic Wounds ◽  
Inflammatory Diseases ◽  
Healing Process ◽  
Obese Mice ◽  
Impaired Wound Healing ◽  
Macrophage Polarisation ◽  
Inflammatory Conditions

The incidence of chronic wounds is escalating, and the associated healing process is especially problematic in an aging population with increased morbidity. Targeting increased inflammation in chronic wounds is a promising but challenging therapeutic strategy. Indeed, inflammation and especially macrophages are required for wound healing. As the NLRP3 inflammasome has been implicated with various other inflammatory diseases, in this study, we used MCC950—a selective NLRP3 small molecule inhibitor—on murine models of both acute and chronic wounds. This molecule, while tested for other inflammatory conditions, has never been investigated to reduce topical inflammation driving chronic wounds. We found that there were no significant differences when the treatment was applied either topically or orally in wild-type C57Bl/6 mice and that it even impaired wound healing in obese mice. The treatment was also unable to improve re-epithelialisation or angiogenesis, which are both required for the closure of wounds. We are inclined to believe that MCC950 may inhibit the closure of chronic wounds and that it does not alter wound-associated macrophage polarisation.

scholarly journals The Role of Chemokines in Wound Healing

2018 ◽  
Vol 19 (10) ◽  
pp. 3217 ◽  
Author(s):  
Anisyah Ridiandries ◽  
Joanne Tan ◽  
Christina Bursill
Keyword(s):  
Wound Healing ◽  
Therapeutic Potential ◽  
Healing Process ◽  
Inflammatory Cells ◽  
Wound Healing Process ◽  
Preclinical Research ◽  
Cxcr4 Antagonist ◽  
Impaired Wound Healing ◽  
Novel Approach ◽  
Healing Wounds

Wound healing is a multistep process with four overlapping but distinct stages: hemostasis, inflammation, proliferation, and remodeling. An alteration at any stage may lead to the development of chronic non-healing wounds or excessive scar formation. Impaired wound healing presents a significant health and economic burden to millions of individuals worldwide, with diabetes mellitus and aging being major risk factors. Ongoing understanding of the mechanisms that underly wound healing is required for the development of new and improved therapies that increase repair. Chemokines are key regulators of the wound healing process. They are involved in the promotion and inhibition of angiogenesis and the recruitment of inflammatory cells, which release growth factors and cytokines to facilitate the wound healing process. Preclinical research studies in mice show that the administration of CCL2, CCL21, CXCL12, and a CXCR4 antagonist as well as broad-spectrum inhibition of the CC-chemokine class improve the wound healing process. The focus of this review is to highlight the contributions of chemokines during each stage of wound healing and to discuss the related molecular pathologies in complex and chronic non-healing wounds. We explore the therapeutic potential of targeting chemokines as a novel approach to overcome the debilitating effects of impaired wound healing.

scholarly journals The potential of human induced pluripotent stem cells for modelling diabetic wound healing in vitro

2018 ◽  
Vol 132 (15) ◽  
pp. 1629-1643 ◽  
Author(s):  
Patricia E. Martin ◽  
Erin M. O’Shaughnessy ◽  
Catherine S. Wright ◽  
Annette Graham
Keyword(s):  
Stem Cells ◽  
Wound Healing ◽  
Induced Pluripotent Stem Cells ◽  
Pluripotent Stem Cells ◽  
Chronic Wounds ◽  
Healing Process ◽  
Diabetic Patients ◽  
Impaired Wound Healing ◽  
Induced Pluripotent

Impaired wound healing and ulceration caused by diabetes mellitus, is a significant healthcare burden, markedly impairs quality of life for patients, and is the major cause of amputation worldwide. Current experimental approaches used to investigate the complex wound healing process often involve cultures of fibroblasts and/or keratinocytes in vitro, which can be limited in terms of complexity and capacity, or utilisation of rodent models in which the mechanisms of wound repair differ substantively from that in humans. However, advances in tissue engineering, and the discovery of strategies to reprogramme adult somatic cells to pluripotency, has led to the possibility of developing models of human skin on a large scale. Generation of induced pluripotent stem cells (iPSCs) from tissues donated by diabetic patients allows the (epi)genetic background of this disease to be studied, and the ability to differentiate iPSCs to multiple cell types found within skin may facilitate the development of more complex skin models; these advances offer key opportunities for improving modelling of wound healing in diabetes, and the development of effective therapeutics for treatment of chronic wounds.

scholarly journals Puerarin Improves Dexamethasone-Impaired Wound Healing In Vitro and In Vivo by Enhancing Keratinocyte Proliferation and Migration

2021 ◽  
Vol 11 (19) ◽  
pp. 9343
Author(s):  
Ly Thi Huong Nguyen ◽  
Sang-Hyun Ahn ◽  
Min-Jin Choi ◽  
In-Jun Yang ◽  
Heung-Mook Shin
Keyword(s):  
Wound Healing ◽  
Healing Process ◽  
Wound Healing Process ◽  
Hacat Cells ◽  
Impaired Wound Healing ◽  
Keratinocyte Proliferation ◽  
And Migration ◽  
Proliferation And Migration

The delayed and impaired wound healing caused by dexamethasone (DEX) is commonly reported. Puerarin, the major isoflavone found in Pueraria montana var. lobata (Willd.) Sanjappa & Pradeep promoted the wound healing process in diabetic rats. However, the effects and underlying mechanisms of puerarin on DEX-impaired wound healing have not been investigated. This study examined the potential uses of puerarin in upregulating keratinocyte proliferation and migration in dexamethasone (DEX)-suppressed wound healing model. The effects of puerarin on wound healing in vivo were investigated by taking full-thickness 5 mm punch biopsies from the dorsal skin of BALB/c mice and then treating them topically with 0.1% DEX. For the in vitro study, DEX-treated HaCaT cells were used to examine the effects of puerarin on DEX-induced keratinocyte proliferation and migration and the mechanisms of its action. Puerarin, when applied topically, accelerated the wound closure rate, increased the density of the capillaries, and upregulated the level of collagen fibers and TGF-β in the wound sites compared to the DEX-treated mice. Puerarin promoted the proliferation and migration of keratinocytes by activating the ERK and Akt signaling pathways in DEX-treated HaCaT cells. In conclusion, puerarin could be effective in reversing delayed and disrupted wound healing associated with DEX treatments.

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