Uses
ATB-343 is a hybrid molecule of the NSAID indomethacinan and an H2S donor.
Biological Activity
atb-343, also named as indomethacin, is an h2s-releasing derivative of indomethacin [1].hydrogen sulfide (h2s) is a newly recognized signaling molecule with potent cytoprotective actions. hydrogen sulfide has been involved in mediating many physiological processes, such as the maintenance of gastrointestinal mucosal defense and repair. hydrogen sulfide also exerts many anti-inflammatory effects, including inhibition of leukocyte adherence to the vascular endothelium and leukocyte migration to sites of inflammation [2].
in vitro
indomethacin enhanced the nk cell activity in vitro by blocking the prostaglandin production of monocytes [3].
in vivo
in rats, oral administration of atb-343 significantly inhibited gastric prostaglandin synthesis and systemic cox-1 activity [1]. indomethacin was a potent inhibitor of prostaglandin synthesis. indomethacin suppressed in vivo thyroid hormone secretion and cholera toxin-induced intestinal fluid accumulation. indomethacin in submicromolar concentrations inhibited cyclic amp-dependent protein kinase and endogenous protein phosphorylation [4].
References
[1] wallace j l. hydrogen sulfide-releasing anti-inflammatory drugs[j]. trends in pharmacological sciences, 2007, 28(10): 501-505.
[2] wallace j l. physiological and pathophysiological roles of hydrogen sulfide in the gastrointestinal tract[j]. antioxidants & redox signaling, 2010, 12(9): 1125-1133.
[3] pedersen b k, oxholm p, klarlund k. characterization of the in vivo and in vitro effects of indomethacin on human natural killer cell activity[j]. allergy, 1986, 41(7): 532-536.
[4] kantor h s, hampton m. indomethacin in submicromolar concentrations inhibits cyclic amp-dependent protein kinase[j]. 1978.
[5] rogers j, kirby l c, hempelman s r, et al.
