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Thromb Haemost 1983; 50(04): 844-847
DOI: 10.1055/s-0038-1665325
Original Article
Schattauer GmbH Stuttgart

Monocrotaline Pyrrole-Induced Pulmonary Hypertension in Fawn-Hooded Rats with Platelet Storage Pool Deficiency: 5-Hydroxytryptamine Uptake by Isolated, Perfused Lungs

Katherine S Hilliker
The Departments of Pharmacology/Toxicology and of Pathology, Michigan State University, East Lansing, Michigan, U.S.A.
,
Thomas G Bell
The Departments of Pharmacology/Toxicology and of Pathology, Michigan State University, East Lansing, Michigan, U.S.A.
,
Robert A Roth
The Departments of Pharmacology/Toxicology and of Pathology, Michigan State University, East Lansing, Michigan, U.S.A.
› Author Affiliations
Further Information

Publication History

Received 27 July 1983

Accepted 30 September 1983

Publication Date:
18 July 2018 (online)

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Summary

Platelets are believed to be involved in the development of monocrotaline pyrrole (MCTP)-induced pulmonary hypertension. To help identify the role of the platelet, the cardiopulmonary toxicity of MCTP was examined in fawn-hooded (FH) rats, a strain with a platelet function defect. Both Sprague-Dawley (SD) and FH rats developed right ventricular hypertrophy and increased lung weights and exhibited decreased biogenic amine removal by isolated, perfused lung preparations after MCTP treatment. The responses of the FH rats were not significantly different from those of the SD rats, suggesting that platelet uptake and release of 5-hydroxytryptamine (5HT) are not the platelet functions involved in MCTP-induced pulmonary hypertension. The FH rats had an interesting strain-related difference from SD rats; isolated lungs from FH rats removed and metabolized a greater proportion of perfused 5HT than the SD rats.

Keywords

Pulmonary hypertension - Monocrotaline pyrrole - Dehydro-monocrotaline - Fawn-hooded rats - 5-hydroxytryptamine - Isolated lungs - Monocrotaline
 

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