scholarly journals Abnormal Cell Responses and Role of TNF-αin Impaired Diabetic Wound Healing

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Fanxing Xu ◽  
Chenying Zhang ◽  
Dana T. Graves

Impaired diabetic wound healing constitutes a major health problem. The impaired healing is caused by complex factors such as abnormal keratinocyte and fibroblast migration, proliferation, differentiation, and apoptosis, abnormal macrophage polarization, impaired recruitment of mesenchymal stem cells (MSCs) and endothelial progenitor cells (EPCs), and decreased vascularization. Diabetes-enhanced and prolonged expression of TNF-αalso contributes to impaired healing. In this paper, we discuss the abnormal cell responses in diabetic wound healing and the contribution of TNF-α.

2011 ◽  
Vol 9 (4) ◽  
pp. 355-361 ◽  
Author(s):  
R Madhyastha ◽  
H Madhyastha ◽  
Y Nakajima ◽  
S Omura ◽  
M Maruyama

Diabetes ◽  
2015 ◽  
Vol 65 (3) ◽  
pp. 780-793 ◽  
Author(s):  
Min Long ◽  
Montserrat Rojo de la Vega ◽  
Qing Wen ◽  
Manish Bharara ◽  
Tao Jiang ◽  
...  

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Sandra Matabi Ayuk ◽  
Heidi Abrahamse ◽  
Nicolette Nadene Houreld

The integration of several cellular responses initiates the process of wound healing. Matrix Metalloproteinases (MMPs) play an integral role in wound healing. Their main function is degradation, by removal of damaged extracellular matrix (ECM) during the inflammatory phase, breakdown of the capillary basement membrane for angiogenesis and cell migration during the proliferation phase, and contraction and remodelling of tissue in the remodelling phase. For effective healing to occur, all wounds require a certain amount of these enzymes, which on the contrary could be very damaging at high concentrations causing excessive degradation and impaired wound healing. The imbalance in MMPs may increase the chronicity of a wound, a familiar problem seen in diabetic patients. The association of diabetes with impaired wound healing and other vascular complications is a serious public health issue. These may eventually lead to chronic foot ulcers and amputation. Low intensity laser irradiation (LILI) or photobiomodulation (PBM) is known to stimulate several wound healing processes; however, its role in matrix proteins and diabetic wound healing has not been fully investigated. This review focuses on the role of MMPs in diabetic wound healing and their interaction in PBM.


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