Marinobufagenin (marinobufagin) is a cardiotonic bufadienolide steroid. It can be found in the plasma and urine of human subjects with myocardial infarction, kidney failure, and heart failure.[1] It is also secreted by the toad Bufo rubescens[2] and other related species such as Bufo marinus. It is a vasoconstrictor with effects similar to digitalis.[3]

References

  1. ^ Tian, Jiang (7 September 2010). "Renal ischemia regulates marinobufagenin release in humans". Hypertension. 56 (5): 914–919. doi:10.1161/hypertensionaha.110.155564. PMC 2959137. PMID 20823380.
  2. ^ Cunha Filho, GA; Schwartz, CA; Resck, IS; Murta, MM; Lemos, SS; Castro, MS; Kyaw, C; Pires Jr, OR; et al. (2005). "Antimicrobial activity of the bufadienolides marinobufagin and telocinobufagin isolated as major components from skin secretion of the toad Bufo rubescens". Toxicon. 45 (6): 777–82. doi:10.1016/j.toxicon.2005.01.017. PMID 15804527.
  3. ^ Fedorova, OV; Talan, MI; Agalakova, NI; Lakatta, EG; Bagrov, AY (2002). "Endogenous ligand of alpha(1) sodium pump, marinobufagenin, is a novel mediator of sodium chloride--dependent hypertension". Circulation. 105 (9): 1122–7. doi:10.1161/hc0902.104710. PMID 11877366.