RGD Reference Report - Acceleration of cutaneous healing by electrical stimulation: degenerate electrical waveform down-regulates inflammation, up-regulates angiogenesis and advances remodeling in temporal punch biopsies in a human volunteer study. - Rat Genome Database

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Acceleration of cutaneous healing by electrical stimulation: degenerate electrical waveform down-regulates inflammation, up-regulates angiogenesis and advances remodeling in temporal punch biopsies in a human volunteer study.

Authors: Sebastian, A  Syed, F  Perry, D  Balamurugan, V  Colthurst, J  Chaudhry, IH  Bayat, A 
Citation: Sebastian A, etal., Wound Repair Regen. 2011 Nov;19(6):693-708. doi: 10.1111/j.1524-475X.2011.00736.x. Epub 2011 Oct 19.
RGD ID: 6771175
Pubmed: PMID:22092840   (View Abstract at PubMed)
DOI: DOI:10.1111/j.1524-475X.2011.00736.x   (Journal Full-text)

We previously demonstrated the beneficial effect of a novel electrical stimulation (ES) waveform, degenerate wave (DW) on skin fibroblasts, and now hypothesize that DW can enhance cutaneous wound healing in vivo. Therefore, a punch biopsy was taken from the upper arm of 20 volunteers on day 0 and repeated on day 14 (NSD14). A contralateral upper arm biopsy was taken on day 0 and treated with DW for 14 days prior to a repeat biopsy on day 14 (ESD14). A near-completed inflammatory stage of wound healing in ESD14, compared to NSD14 was demonstrated by up-regulation of interleukin-10 and vasoactive intestinal peptide using quantitative real time polymerase chain reaction and down-regulation of CD3 by immunohistochemistry (IHC) (p < 0.05). In addition to up-regulation (p < 0.05) of mRNA transcripts for re-epithelialization and angiogenesis, IHC showed significant overexpression (p < 0.05) of CD31 (15.5%), vascular endothelial growth factor (66%), and Melan A (8.6 cells/0.95 mm(2)) in ESD14 compared to NSD14 (9.5%, 38% and 4.3 cells/0.95 mm(2), respectively). Furthermore, granulation tissue formation (by hematoxylin and eosin staining), and myofibroblastic proliferation demonstrated by alpha-smooth muscle actin (62.7%) plus CD3+ T lymphocytes (8.1%) showed significant up-regulation (p < 0.05) in NSD14. In the remodeling stage, mRNA transcripts for fibronectin, collagen IV (by IHC, 14.1%) and mature collagen synthesis (by Herovici staining, 71.44%) were significantly up-regulated (p < 0.05) in ESD14. Apoptotic (TUNEL assay) and proliferative cells (Ki67) were significantly up-regulated (p < 0.05) in NSD14 (5.34 and 11.9 cells/0.95 mm(2)) while the proliferation index of ESD14 was similar to normal skin. In summary, cutaneous wounds receiving DW electrical stimulation display accelerated healing seen by reduced inflammation, enhanced angiogenesis and advanced remodeling phase.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
Penetrating Wounds  IDA 6771175 RGD 
Penetrating Wounds  ISOPECAM1 (Homo sapiens)6771175; 6771175 RGD 

Objects Annotated

Genes (Rattus norvegicus)
Pecam1  (platelet and endothelial cell adhesion molecule 1)

Genes (Mus musculus)
Pecam1  (platelet/endothelial cell adhesion molecule 1)

Genes (Homo sapiens)
PECAM1  (platelet and endothelial cell adhesion molecule 1)


Additional Information