title: Anti-inflammatory and analgesic properties of Drynaria quercifolia (L.) J. Smith.
abstract: BACKGROUND
  Drynaria quercifolia (L.) J. Smith (Polypodiaceae), has been widely used by ethnic groups of India to treat inflammation, rheumatism, headache, bone fracture, jaundice, etc.
  
  
  OBJECTIVE
  To evaluate the anti-inflammatory and analgesic properties of the ethanolic extract of rhizome of Drynaria quercifolia (DQ) and its phytochemical profile.
  
  
  METHODS
  DQ was used to evaluate the anti-inflammatory and analgesic effects using carrageenan-induced paw oedema/cotton pellet-induced granuloma in Wistar rats and acetic acid-induced writhing/formalin-induced paw licking test in Swiss albino mice respectively.
  
  
  RESULTS
  Oral administration of DQ produced significant inhibition of carrageenan-induced paw oedema and granuloma formation in rats, almost comparable to that caused by indomethacin. DQ significantly attenuated acute and delayed phases of formalin-induced pain and acetic acid-induced writhing episodes in mice. The analgesia was comparable to that produced by sodium salicylate and aspirin respectively. Phytochemical analysis gave positive tests for catechin, coumarins, flavonoids, phenolics, saponin, steroids, tannins, and triterpenes. The total phenolics in DQ was 244 mg/g and naringin content was 0.048%.
  
  
  CONCLUSIONS
  The results suggest the presence of potent anti-inflammatory and analgesic principles in DQ that justifies its use for alleviating painful inflammatory conditions.
authors: Tropical Botanic Garden and Research Institute, Palode, Thiruvananthapuram 695 562, Kerala, India.
authors: G I
authors: GI
authors: Anuja
authors: P G
authors: PG
authors: Latha
authors: S R
authors: SR
authors: Suja
authors: S
authors: S
authors: Shyamal
authors: V J
authors: VJ
authors: Shine
authors: S
authors: S
authors: Sini
authors: S
authors: S
authors: Pradeep
authors: P
authors: P
authors: Shikha
authors: S
authors: S
authors: Rajasekharan
mesh_terms: D000700:Analgesics / Q000032:analysis / Q000494:pharmacology* / Q000633:toxicity; D000818:Animals; D000893:Anti-Inflammatory Agents / Q000009:adverse effects / Q000032:analysis / Q000494:pharmacology*; D002351:Carrageenan; D004487:Edema / Q000139:chemically induced / Q000188:drug therapy; D007249:Inflammation / Q000139:chemically induced / Q000188:drug therapy*; D051379:Mice; D010146:Pain / Q000139:chemically induced / Q000188:drug therapy*; D010147:Pain Measurement; D008517:Phytotherapy; D010936:Plant Extracts / Q000494:pharmacology* / Q000633:toxicity; D029621:Polypodiaceae; D051381:Rats; D017208:Rats, Wistar
chemical_list: D000700:Analgesics; D000893:Anti-Inflammatory Agents; D010936:Plant Extracts; D002351:Carrageenan