Antimicrobial and anti-inflammatory activities of leaf extract of Valeriana wallichii DC

Pak J Pharm Sci. 2012 Oct;25(4):715-9.

Abstract

Valeriana wallichii DC (Valerianaceae) is one of the most widely used traditional remedies for various complications associated with nervous system and digestion. No antimicrobial and anti-inflammatory studies have so far been carried out on the aerial parts of the plant. The present work was focused to evaluate the antimicrobial (antifungal and antibacterial) and anti-inflammatory properties of V. wallichii using reported methods. Chloroform fraction (VW-2) and hexane fraction (VW-3) exhibited significant activity against S. aureus and B. subtilus, respectively. The chloroform fraction (VW-2) showed significant activity against S. aureus with 0.27 mg/ml MIC, where 0.31 mg/ml MIC was deduced for VW-3 fraction against B. subtilus. VW-3 fraction was also found to be the most potent inhibitor of M. canis, showing 70% inhibition with an MIC value of 0.19 mg/ml. Considerable inhibitory activity was also observed for VW-2 and water fraction (VW-6) against M. canis and A. flavus. A remarkable anti-inflammatory like activity was observed for the crude extract at a dose of 200 mg/kg at all observed durations. Other doses of the sample also showed excellent activity. Looking to these results it may be concluded that V. wallichii may be a potential source for activity guided isolation of natural products with antimicrobial and anti-inflammatory-like properties.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Anti-Bacterial Agents / chemistry
  • Anti-Bacterial Agents / isolation & purification
  • Anti-Bacterial Agents / pharmacology*
  • Anti-Inflammatory Agents / chemistry
  • Anti-Inflammatory Agents / isolation & purification
  • Anti-Inflammatory Agents / pharmacology*
  • Antifungal Agents / chemistry
  • Antifungal Agents / isolation & purification
  • Antifungal Agents / pharmacology*
  • Aspergillus flavus / drug effects
  • Aspergillus flavus / growth & development
  • Bacillus subtilis / drug effects
  • Bacillus subtilis / growth & development
  • Carrageenan
  • Chloroform / chemistry
  • Disease Models, Animal
  • Dose-Response Relationship, Drug
  • Edema / chemically induced
  • Edema / prevention & control*
  • Gram-Positive Endospore-Forming Bacteria / drug effects*
  • Gram-Positive Endospore-Forming Bacteria / growth & development
  • Hexanes / chemistry
  • Male
  • Microbial Sensitivity Tests
  • Microsporum / drug effects
  • Microsporum / growth & development
  • Mitosporic Fungi / drug effects*
  • Mitosporic Fungi / growth & development
  • Plant Leaves
  • Rats
  • Rats, Wistar
  • Solvents / chemistry
  • Staphylococcus aureus / drug effects
  • Staphylococcus aureus / growth & development
  • Valerian* / chemistry

Substances

  • Anti-Bacterial Agents
  • Anti-Inflammatory Agents
  • Antifungal Agents
  • Hexanes
  • Solvents
  • Chloroform
  • Carrageenan