All the synthesized derivatives were evaluated for anthelmintic activity against earth worms Perituma posthuma. The compounds have shown moderate to good anthelmintic activity .The compound containing electron donating groups such www.selleckchem.com/ROCK.html as CH3, OCH3 at 3 and 2 number position on phenyl ring, i.e., the compound TH18 and TH20 (see Table 1) exhibited good anthelmintic activity as compared with stander drug albendazole. A series of 1-[2 (substituted phenyl)-4-oxothiazolidin-3-yl]-3-(6-fluro-7-chloro-1,3-benzothiazol-2-yl)-ureas were designed, synthesized and evaluated for anthelmintic activity. The results indicated that higher concentration of synthesized derivatives exhibit paralytic effect much earlier. Out of

five synthesized compounds, two compounds (TH18 and TH20) showed good anthelmintic activity with all three concentrations. Three compounds (TH16, TH17, TH19) contain methoxy, methyl group at C-4, C-2 position of phenyl ring, hence display less or comparable anthelmintic activity with reference to albendazole. Among the tested new compounds,

better anthelmintic activity was reported for TH18 and TH20 which may probably due to attachment of methyl and methoxy group at C-3, C-2 position of phenyl ring. All authors have none to declare. The authors are grateful to principal, SAHA HDAC research buy staff members of N.R Vekaria Institute of Pharmacy, Junagadh for their support and facilities provided to carry out this work. The authors are also thankful to SAIF, Punjab University and ISFAL, Punjab for recording data. “
“Nitric oxide (NO) synthesized by nitric oxide synthase (NOS) exerts potent effect through free radicals and plays a vital role in regulation of various cellular processes. It also acts as a signalling molecule of signal transduction pathway by stimulation of guanylate cyclase mediated cGMP synthesis.1 This bioactive signalling molecule

first described in mammals, also involves in various physiological functions like relaxation of smooth muscle, neuronal communication, from immune regulation and apoptosis etc.2 It is also an important signalling molecule in plants and has various roles like plant growth and development, germination, flowering, ripening of fruits and senescence of organs. Nitric oxide can also provoke some harmful effects. This dual role of NO may depend on the concentration of NO.3 Under certain experimental conditions, NO render resistance to cells against oxidative stress. During such stress conditions, NO can mediate tissue protective reaction4 as it has the ability to scavenge the reactive oxygen species ending the chain.5 Exposure to low, non-lethal doses of NO has been shown to impel adaptive responses that renders cells resistance to lethal concentrations of NO and peroxides. It has been found that nitric oxide generated by inducible nitric oxide synthase (iNOS) inhibits the proliferation of T-lymphocytes.