Project description:Before and after negative pressure treatment in 3 diabetic foot patients, the granulation tissue of foot ulcer was sampled and analyzed quantitatively by LC-MS /MS method.
2020-08-17 | PXD020929 | iProX
Project description:Metagenome of Diabetic Ulcer metagenome
Project description:The purpose of this study was to evaluate gene expression differences in debrided human venous ulcer tissue from patients treated with low-frequency (20 kHz), low-intensity (100 mW/cm2) ultrasound compared to a sham treatment in an effort to better understand the potential biological mechanisms.
Project description:Recent study has revealed that long non-coding RNAs (lncRNAs) perform as important regulators of cellular physiology and pathology, which makes them promising therapeutic and diagnostic entities. We found lncRNA WAKMAR1 is significantly down-regulated in wound-edge keratinocytes from venous ulcer and diabetic foot ulcer compared to the normal wounds. To study the genes regulated by WAKMAR1, we transfected lncRNA GapmeRs into human primary epidermal keratinocytes to inhibit its expression. We performed a global transcriptome analysis of keratinocytes upon inhibition of WAKMAR1 using Affymetrix arrays. We performed a global transcriptome analysis of keratinocytes upon inhibition of WAKMAR1 using Affymetrix arrays.
Project description:MicroRNAs are powerful gene expression regulators, but their corneal repertoire and potential changes in corneal diseases remain unknown. Our purpose was to identify miRNAs altered in the human diabetic cornea by microarray analysis, and to examine their effects on wound healing in cultured telomerase-immortalized human corneal epithelial cells (HCEC) in vitro. Using microarrays, 29 miRNAs were identified as differentially expressed in diabetic samples. Two miRNA candidates showing the highest fold increased in expression in the diabetic cornea were confirmed by Q-PCR and further characterized. HCEC transfection with h-miR-146a or h-miR-424 significantly retarded wound closure, but their respective antagomirs significantly enhanced wound healing vs. controls. Cells treated with h-miR-146a or h-miR-424 had decreased p-p38 and p-EGFR staining, but these increased over control levels close to the wound edge upon antagomir treatment. In conclusion, several miRNAs with increased expression in human diabetic central corneas were found. Two such miRNAs inhibited cultured corneal epithelial cell wound healing. Dysregulation of miRNA expression in human diabetic cornea may be an important mediator of abnormal wound healing.
