Abstract:
:The aim of the present study was to determine the effects of increased cAMP levels in response to pituitary adenylate cyclase-activating polypeptide 27 (PACAP27) on atrial atrial natriuretic peptide (ANP) secretion in rabbit atria. A perfused beating atrial model was used in the present study and cAMP efflux and ANP levels in atrial perfusates were measured by radioimmnoassay. At 100 nmol/L, PACAP27 increased cAMP production, which resulted in subsequent inhibition of ANP secretion. Nicardipine (1.0 micromol/L), an L-type Ca2+ channel blocker, attenuated inhibition of ANP secretion by PACAP27. Staurosporine (1.0 micromol/L), a non-specific protein kinase inhibitor, and H-89 (1.0 micromol/L), a cAMP-dependent protein kinase A (PKA) inhibitor, completely blocked the inhibition of ANP secretion in response to PACAP27 but had no effect on PACAP27-induced increases in cAMP. In conclusion, the results suggest that increased cAMP levels in response to PACAP27 negatively regulate ANP secretion via the adenylate cyclase-cAMP-PKA signalling pathway in rabbit atria and that L-type Ca2+ channels may be involved, in part, in the regulation of ANP secretion by cAMP.
journal_name
Clin Exp Pharmacol Physioljournal_title
Clinical and experimental pharmacology & physiologyauthors
Zhang Y,Liu LP,Liang ZL,Li XL,Jin YZ,Cui Xdoi
10.1111/j.1440-1681.2008.04996.xsubject
Has Abstractpub_date
2008-10-01 00:00:00pages
1233-7issue
10eissn
0305-1870issn
1440-1681pii
CEP4996journal_volume
35pub_type
杂志文章abstract::1. The study examines whether intracerebroventricular (ICV) infusion of atrial natriuretic peptide (human ANP,1-28) influences renal electrolyte and water excretion, vasopressin release, renal and femoral blood flows in conscious ewes. The blood flow was measured by chronically implanted ultrasonic flow probes. 2. ICV...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1994.tb02494.x
更新日期:1994-03-01 00:00:00
abstract::Acute kidney injury (AKI) occurs in 5% of hospitalized patients and in 50% of sepsis patients with acute renal dysfunction. However, there have been no safe and effective therapeutic strategies. The hypoxia condition is closely related to renal injury and function under AKI. As hypoxia-inducible factor 1α (HIF-1α) is ...
journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/1440-1681.12947
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journal_title:Clinical and experimental pharmacology & physiology
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doi:10.1111/j.1440-1681.1994.tb02506.x
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abstract::1. The effects of ATP and some of its more stable analogues have been examined upon preparations of epididymal and prostatic halves of vasa deferentia and of cauda epididymides from rats that had undergone vasectomy by medial transection of the vas deferens. 2. After unilateral vasectomy, the potencies of ATP, beta, g...
journal_title:Clinical and experimental pharmacology & physiology
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doi:10.1111/j.1440-1681.1990.tb01358.x
更新日期:1990-08-01 00:00:00
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doi:10.1111/j.1440-1681.1983.tb00177.x
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pub_type: 杂志文章
doi:10.1111/j.1440-1681.1994.tb02433.x
更新日期:1994-01-01 00:00:00
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pub_type: 杂志文章
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更新日期:1999-03-01 00:00:00
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journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:
更新日期:1999-04-01 00:00:00
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更新日期:1992-08-01 00:00:00
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doi:10.1111/j.1440-1681.1982.tb00840.x
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abstract::1. Epidemiological evidence indicates that low birthweight increases the risk of a number of adult-onset diseases. It is now apparent that many babies with a low birthweight may have been subjected to a combination of reduced growth rates in utero as well as preterm birth. However, the long-term effects of preterm bir...
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更新日期:1980-03-01 00:00:00
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更新日期:2010-09-01 00:00:00
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更新日期:1988-06-01 00:00:00
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pub_type: 杂志文章
doi:10.1111/j.1440-1681.1998.tb02177.x
更新日期:1998-12-01 00:00:00
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journal_title:Clinical and experimental pharmacology & physiology
pub_type: 杂志文章
doi:10.1111/j.1440-1681.1989.tb01618.x
更新日期:1989-08-01 00:00:00