Parathyroid hormone analogues inhibit calcium mobilization in cultured vascular cells.
نویسندگان
چکیده
منابع مشابه
Parathyroid hormone analogues inhibit calcium mobilization in cultured vascular cells.
Parathyroid hormone and parathyroid hormone-related protein lower blood pressure and relax contracted arteries. Parathyroid hormone also attenuates angiotensin II-induced vasoconstriction. To determine the cellular mechanism or mechanisms by which parathyroid hormone analogues antagonize pressor effects, we examined the effect of these peptides on angiotensin II-induced calcium mobilization in ...
متن کاملParathyroid hormone and bone mobilization in vitro.
A two-phase system in vitro has been developed for studying the bone-mobilizing effects of parathyroid hormone. Phase I consists of the incubation of hormone with ascites cells, and Phase II is the incubation of Phase I supernatant with dead bone powder. The mobilization of labeled calcium from this powder is the index of hormonal activity. The response to hormone is apparent at lo-* M hormone,...
متن کاملParathyroid hormone/adenylate cyclase coupling in vascular smooth muscle cells.
Parathyroid hormone (PTH) has been implicated in hypertension, but PTH infusion results in vasodilation. PTH activates adenylate cyclase in vascular smooth muscle, but little is known about the factors that regulate PTH receptor/adenylate cyclase coupling in vascular cells. To characterize hormone-receptor signaling, we measured cyclic AMP levels in rat arterial smooth muscle cells in culture e...
متن کاملFibroblast growth factor-23 regulates parathyroid hormone and 1alpha-hydroxylase expression in cultured bovine parathyroid cells.
Fibroblast growth factor-23 (FGF23) is a circulating factor that decreases serum levels of inorganic phosphate (Pi) as well as 1,25-dihydroxyvitamin D(3). Recent studies also suggest a correlation between serum levels of FGF23 and parathyroid hormone (PTH) in patients with chronic kidney disease. It is, however, unknown whether FGF23 directly modulates PTH expression, or whether the correlation...
متن کاملRegulation of parathyroid hormone release and cytosolic calcium by extracellular calcium in dispersed and cultured bovine and pathological human parathyroid cells.
Alterations in parathyroid glandular sensitivity to calcium may contribute to the hypersecretion of PTH in hyperparathyroidism. Since the cytosolic calcium concentration may mediate the effects of extracellular calcium on PTH release, we have employed the calcium-sensitive intracellular dye QUIN-2 to examine the relationship between extracellular calcium, cytosolic calcium, and PTH secretion in...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Hypertension
سال: 1994
ISSN: 0194-911X,1524-4563
DOI: 10.1161/01.hyp.23.3.402