Calcium and ionophore A23187 lower calcitonin gene-related peptide-like immunoreactivity in endocrine cells of organ cultured fetal rat lungs

1993 ◽  
Vol 236 (1) ◽  
pp. 226-230 ◽  
Author(s):  
Masahito Ebina ◽  
Richard F. Hoyt ◽  
Sergei P. Sorokin ◽  
Nancy A. McNelly
1983 ◽  
Vol 7 (3) ◽  
pp. 301 ◽  
Author(s):  
D.R. Springall ◽  
J.M. Polak ◽  
M.A. Ghatei ◽  
P. Lackie ◽  
M.G. Rosenfeld ◽  
...  

1988 ◽  
Vol 117 (4_Suppl) ◽  
pp. S84-S85 ◽  
Author(s):  
K. FRANK ◽  
K. FIDORRA ◽  
F. RAUE ◽  
H.W. MINNE ◽  
R. ZIEGLER

1988 ◽  
Vol 155 (3) ◽  
pp. 259-267 ◽  
Author(s):  
D. R. Springall ◽  
G. Collina ◽  
G. Barer ◽  
A. J. Suggett ◽  
D. Bee ◽  
...  

1994 ◽  
Vol 77 (1) ◽  
pp. 142-146 ◽  
Author(s):  
P. L. Janssen ◽  
A. Tucker

The role of calcitonin gene-related peptide (CGRP) in modulating hypoxic pulmonary vasoconstriction was assessed. The effects of CGRP and its antagonist [CGRP-(8–37)] on responses to acute hypoxia (3% O2) and angiotensin II (ANG II; 0.4 microgram) were studied in isolated lungs of male Sprague-Dawley rats perfused with a salt solution. Rats with pulmonary hypertension, induced by simulated altitude exposure, were also used to determine the actions of CGRP in a remodeled pulmonary vascular bed. In normotensive (NT) and altitude-exposed (AE) lungs, CGRP injections (10 nM), given after stable pressor responses were attained, attenuated (P < 0.05) subsequent hypoxic pressor responses. Pretreatment with CGRP-(8–37) (10 nM) enhanced (P < or = 0.05) initial ANG II-induced pressor responses in both AE and NT lungs. CGRP-(8–37) pretreatment (10 nM) had little influence on the hypoxic pressor responses in either NT or AE lungs. Results indicate that CGRP modulates hypoxic pulmonary vasoconstriction and that CGRP-(8–37) enhances pressor responses to ANG II in NT and AE rat lungs.


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