Ovariectomy and estrogen-induced alterations in myocardial contractility in female rabbits: role of the L-type calcium channel

E Patterson, L Ma, B Szabo, CP Robinson… - Journal of Pharmacology …, 1998 - ASPET
The effects of ovariectomy and estrogen replacement on myocardial contractility were
examined in female rabbits. Ovariectomy failed to alter left ventricular mass, papillary muscle …

17 beta-Estradiol attenuates voltage-dependent Ca2+ currents in A7r5 vascular smooth muscle cell line

F Zhang, JL Ram, PR Standley… - American Journal of …, 1994 - journals.physiology.org
Previous studies have shown that 17 beta-estradiol (beta-E2) has a direct acute inhibitory
effect on vascular smooth muscle (VSM) contraction. To investigate the mechanisms …

Mechanisms of vasorelaxation to testosterone in the rat aorta

P Tep-areenan, DA Kendall, MD Randall - European Journal of …, 2003 - Elsevier
We have investigated the role of endothelium-derived relaxing factors, K+ channels and
steroid receptors in vasorelaxation to testosterone in the rat aorta. Testosterone (1 nM–mM) …

Non‐genomic mechanism of 17 beta‐oestradiol‐induced inhibition of contraction in mammalian vascular smooth muscle.

T Kitazawa, E Hamada, K Kitazawa… - The Journal of …, 1997 - Wiley Online Library
17 beta‐Oestradiol (E2) at 0.1‐10 microM directly inhibited various tonic and phasic smooth
muscle contractions. The mechanism (s) of oestrogen‐induced inhibition of contraction was …

The progestin levonorgestrel induces endothelium‐independent relaxation of rabbit jugular vein via inhibition of calcium entry and protein kinase C: role of cyclic …

O Herkert, H Kuhl, R Busse… - British journal of …, 2000 - Wiley Online Library
The progestin and oestrogen component of oral contraceptives have been involved in the
development of venous thromboembolic events in women. In the present study we …

Acute modulation of Ca2+ influx on rat heart by 17β-estradiol

C Buitrago, V Massheimer, AR de Boland - Cellular signalling, 2000 - Elsevier
Estrogens initiate their action by binding to specific intracellular receptors and then acting on
gene expression. In addition, there is growing evidence of a direct membrane effect via …

Inhibition of large-conductance calcium-activated potassium channel by 2-methoxyestradiol in cultured vascular endothelial (HUV-EC-C) cells

HT Chiang, SN Wu - The Journal of Membrane Biology, 2001 - Springer
2-Methoxyestradiol, an endogenous metabolite of 17β-estradiol, is known to have antitumor
and antiangiogenic actions. The effects of 2-methoxyestradiol on ionic currents were …

Oestrogen directly inhibits the cardiovascular L-type Ca2+ channel Cav1. 2

ND Ullrich, A Koschak, KT MacLeod - Biochemical and biophysical …, 2007 - Elsevier
Oestrogen can modify the contractile function of vascular smooth muscle and
cardiomyocytes. The negative inotropic actions of oestrogen on the heart and coronary …

Estrogen increases Ca2+efflux from female porcine coronary arterial smooth muscle

YS Prakash, AA Togaibayeva… - American Journal …, 1999 - journals.physiology.org
Acute estrogen administration relaxes vascular smooth muscle by decreasing intracellular
Ca2+ concentration ([Ca2+] i). In the present study, we examined the hypothesis that this …

The influence of oestrogen and progesterone on the actions of two calcium entry blockers in the rat uterus

SJ Downing, M Hollingsworth… - Journal of …, 1988 - joe.bioscientifica.com
The potency and maximum effect of the calcium entry blocker nifedipine as an inhibitor of
uterine contractions in vivo are increased in rats in late pregnant compared with non …