Pulmonary hypertension, part 3: Early therapies and vascular physiology

In this episode, we dive into the early therapies and how our understanding of vascular physiology drastically changed the management of pulmonary hypertension. Intro 0:12 In this episode 0:18 Recap of part 1 & 2 0:31 What part 3 is about 2:31 WHO conference in 1975: Treating pulmonary hypertension 3:48 The Discovery of Non-Steroidal Anti-inflammatory Drugs (NSAIDs), Part 1 5:20 Epoprostenol 6:18 Prostacyclin 10:37 Endothelin antagonists 11:41 Phosphodiesterase type 5 (PDE5) inhibitors 14:08 Interaction of nerves and blood vessels 15:06 The Soups VS the Sparks 17:36 A dreamed experiment 19:06 Acetylcholine 23:23  Enter "the calabar bean" 24:45 Acetylcholine and vasodilation: 1976 26:01 Rabbit aorta 27:45 Nitric oxide 29:38 Why are we using nitric oxide to treat pulmonary hypertension? 31:31 Tachyphylaxis 33:48 TNT factories 35:09 Nitrous oxide and tachyphylaxis 36:52 Pfizer in the 1980s 38:06 Understanding the trigger of pulmonary hypertension 40:53 PDE5 and nitric oxide and pulmonary hypertension 43:07 The end of the ripping yarns 44:20 Coming up in part 4 46:17 Thanks for listening 47:29 We'd love to hear from you! Send your comments/questions to Dr. Brown at [email protected]. Follow us on Twitter @HRheuminations @AdamJBrownMD @HealioRheum. References: Bernard C. C R Soc Biol. 1851;3:163-164. Furchgott RF, et al. Nature. 1980;doi:10.1038/288373a0. Galiè N, et al. N Engl J Med. 2005;doi:10.1056/NEJMoa050010. Ghofrani HA, et al. Nat Rev Drug Discov. 2006;doi:10.1038/nrd2030. Giordano D, et al. Biochim Biophys Acta. 2001;doi:10.1016/s0167-4889(01)00086-6. Guthrie F. Q J Chem Soc. 1859;doi:10.1039/QJ8591100245. Higenbottam T, et al. Lancet. 1984;doi:10.1016/s0140-6736(84)91452-1. Marsh N, et al. Clin Exp Pharmacol Physiol. 2000;doi:10.1046/j.1440-1681.2000.03240.x. Montastruc JL, et al. Clin Auton Res. 1996;doi:10.1007/BF02281906. Nejad SH, et al. Future Cardiol. 2024;doi:10.1080/14796678.2024.2367390. Tansey EM. C R Biol. 2006;doi:10.10116/j.crvi.2006.03.012. Warren JV. Trans Am Clin Climatol Assoc. 1988;99:10-6. Disclosures: Brown reports no relevant financial disclosures.