Picroliv accelerates epithelialization and angiogenesis in rat wounds

Anoop K. Singh, Anuj Sharma, James Warren, Subhashree Madhavan, Keith Steele, N. V. Rajeshkumar, Rajesh L. Thangapazham, Shekhar C. Sharma, Dinesh K. Kulshreshtha, Jaya Gaddipati, Radha K. Maheshwari

Research output: Contribution to journalArticlepeer-review

Abstract

Tissue repair and wound healing are complex processes that involve inflammation, granulation and tissue remodeling. Angiogenesis plays a central role in wound healing. Earlier, we have shown that picroliv, a natural product obtained from the roots of Picrorhiza kurrooa, up-regulates the expression of vascular endothelial growth factor in human umbilical vein endothelial cells and of insulin-like growth factor in rats during hypoxia. In the present study, we have investigated the effect of picroliv in an ex vivo rat aorta ring model of angiogenesis. Picroliv enhanced the sprouting and migration of endothelial cells. We also investigated punch wound healing on days 4 and 7 after wounding by histology, morphometry and collagenization. The data showed improved re-epithelialization, neovascularization and migration of various cells such as endothelial, dermal myofibroblasts and fibroblasts into the wound bed after picroliv treatment. Immunohistochemical localization showed increased VEGF and alpha smooth muscle actin staining consistent with an increased number of microvessels in granulation tissue. These findings suggest that picroliv could be developed as a therapeutic angiogenic agent for the restoration of the blood supply in diseases involving inadequate blood supply such as limb ischemia, ischemic myocardium and wound healing.

Original languageEnglish (US)
Pages (from-to)251-256
Number of pages6
JournalPlanta Medica
Volume73
Issue number3
DOIs
StatePublished - Mar 2007

Keywords

  • Angiogenesis
  • Fibroblast
  • Picroliv
  • Wound healing

ASJC Scopus subject areas

  • Analytical Chemistry
  • Molecular Medicine
  • Pharmacology
  • Pharmaceutical Science
  • Drug Discovery
  • Complementary and alternative medicine
  • Organic Chemistry

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