%0 Journal Article %T In vivo evaluation of single dose tetanus toxoid vaccine formulation with chitosan microspheres %A Manivannan R %A Dhanaraj S %A Rao Y %A Balasubramaniam A %J Indian Journal of Pharmaceutical Sciences %D 2008 %I Medknow Publications %X Chitosan adsorbed microspheres containing tetanus toxoid were prepared in the size range of 10 ¦Ìm to 75 ¦Ìm, by emulsion-cross linking technique at different speeds of agitation. The amount of tetanus toxoid incorporated into chitosan microspheres were estimated by limes flocculation test and in vivo evaluation of tetanus toxoid adsorbed chitosan microspheres were determined by toxin neutralization method using albino mice. The results of in vivo release for the batches of 10 ¦Ìm and 25 ¦Ìm correlates with the results of in vitro in which both the batches passes the limit of IP standard (4 Lf) where as, for the batches of 50 ¦Ìm and 75 ¦Ìm, the in vitro release of tetanus toxoid was 2 Lf. But our in vivo studies for the batches of 50 ¦Ìm and 75 ¦Ìm fail to pass the limit stated in IP. The release of tetanus toxoid from the chitosan microspheres was found to be sustained for the period of 6 months. %K Tetanus toxoid %K microspheres %K chitosan %K tetanus toxin %K tetanus antitoxin %U http://www.ijpsonline.com/article.asp?issn=0250-474X;year=2008;volume=70;issue=1;spage=11;epage=15;aulast=Manivannan