Kaithwas, GauravMukherjee, AlokChaurasia, A KMajumdar, Dipak K2013-02-222013-02-222011-12Kaithwas Gaurav, Mukherjee Alok, Chaurasia A K, Majumdar Dipak K. Antiinflammatory, analgesic and antipyretic activities of Linum usitatissimum L. (flaxseed/linseed) fixed oil. Indian Journal of Experimental Biology. 2011 Dec; 49(12): 932-938.http://imsear.searo.who.int/handle/123456789/145211The fixed oil of L. usitatissimum (flaxseed/linseed) inhibited PGE2-, leukotriene-, histamine- and bradykinin-induced inflammation. The oil also inhibited arachidonic acid-induced inflammation, suggesting its capacity to inhibit both cyclooxygenase and lipoxygenase pathways of arachidonate metabolism. In tail immersion model, the oil raised the pain threshold to a lesser extent than morphine but showed excellent peripherally acting, analgesic activity comparable to aspirin, against acetic acid-induced writhing in mouse. In typhoid paratyphoid A/B vaccine-induced pyrexia, the oil showed antipyretic activity comparable to aspirin. The oil contains 57.38% -linolenic acid. Dual inhibition of arachidonic acid metabolism, antihistaminic and antibradykinin activities of the oil could account for the biological activity and the active principle could be -linolenic acid an omega-3 (18:3, n-3) fatty acid.enAntibradykininAntihistaminicArachidonic acidDual-inhibitor-Linolenic acidArticle