¿Protección cardiovascular por el estrógeno, un efecto antagonista del calcio?
Video Experimental Relacionado
Updated: Nov 10, 2026
06:18
An In Vivo Estrogen Deficiency Mouse Model for Screening Exogenous Estrogen Treatments of Cardiovascular Dysfunction After Menopause
Published on: August 13, 2019
P Collins1, G M Rosano, C Jiang
1Department of Cardiac Medicine, National Heart and Lung Institute, London, UK.
Lancet (London, England)
|May 15, 1993
Resumen
La terapia de reemplazo de estrógenos puede proteger a las mujeres posmenopáusicas contra las enfermedades cardiovasculares al actuar como un bloqueador de los canales de calcio a largo plazo. Este mecanismo ofrece una posible explicación para el estrógeno.
Área de la Ciencia:
- Ciencias Cardiovasculares Ciencias Cardiovasculares
- Endocrinología Endocrinología.
- Farmacología Farmacología.
Sus antecedentes:
- Las mujeres premenopáusicas presentan un menor riesgo de enfermedad cardiovascular (ECV) en comparación con los hombres.
- La terapia de reemplazo de estrógenos (ERT) preserva la protección cardiovascular en mujeres posmenopáusicas.
Objetivo del estudio:
- Para investigar los posibles beneficios cardiovasculares de la terapia de reemplazo de estrógenos.
- Explorar los efectos antagonistas del calcio de los estrógenos como un mecanismo para la protección de las ECV.
Principales métodos:
- Se recogieron y analizaron pruebas experimentales.
- Se examinaron los efectos antagonistas del calcio a largo plazo de los estrógenos.
Principales resultados:
- La terapia de reemplazo de estrógenos demuestra un efecto protector contra las enfermedades cardiovasculares en las mujeres.
- Los datos experimentales sugieren que el estrógeno posee propiedades antagonistas del calcio a largo plazo.
Conclusiones:
- El efecto antagonista del calcio del estrógeno es un mecanismo propuesto para sus beneficios cardiovasculares en mujeres posmenopáusicas.
- Este hallazgo puede informar futuras estrategias terapéuticas para la prevención de enfermedades cardiovasculares.
Videos de Conceptos Relacionados
01:18Antihypertensive Drugs: Action of Calcium Channel Blockers
Calcium ions are essential to contract smooth muscle cells in blood vessels. They enter these cells through voltage-dependent calcium channels, specifically L-type calcium channels in the cell membrane. These L-type calcium channels are integral to the excitation-contraction coupling process in smooth muscle. When a stimulus is received by smooth muscle cells, their membrane depolarizes. This alteration in membrane potential instigates the opening of L-type calcium channels. As a result,...
01:17Hormones and Bone Tissue
The endocrine system produces and secretes hormones, which interact with the skeletal system. These hormones control bone growth, maintain bone once it is formed, and remodel it.
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...
01:25Antianginal Drugs: Calcium Channel Blockers and Ranolazine
Angina pectoris, a primary symptom of ischemic heart disease, requires careful pharmacological interventions. In this context, calcium channel blockers (CCBs) and ranolazine have emerged as crucial pharmacotherapeutic agents, providing deep insights into the complexities of angina management.
CCBs, a diverse class that includes dihydropyridines (nifedipine) and diphenylalkylamines (verapamil and diltiazem), exert their effect by blocking calcium channels in cardiac and smooth muscle cells. This...
CCBs, a diverse class that includes dihydropyridines (nifedipine) and diphenylalkylamines (verapamil and diltiazem), exert their effect by blocking calcium channels in cardiac and smooth muscle cells. This...
01:17Hormonal Regulation of Blood Pressure
Endocrinal or hormonal intervention in the cardiovascular system is predominantly exerted by the catecholamines - epinephrine and norepinephrine, as well as a slew of hormones that interact with renal function to modulate blood volume.
Epinephrine and Norepinephrine
The adrenal medulla releases epinephrine and norepinephrine, catecholamines that enhance and extend the sympathetic or "fight or flight" physiological response. These hormones escalate heart rate and the force of contraction while...
Epinephrine and Norepinephrine
The adrenal medulla releases epinephrine and norepinephrine, catecholamines that enhance and extend the sympathetic or "fight or flight" physiological response. These hormones escalate heart rate and the force of contraction while...
01:40Bone Remodeling
Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
01:17Antiepileptic Drugs: Calcium Channel Blockers
Calcium channel blockers, a class of antiepileptic drugs, regulate the flow of calcium ions within neurons.
Calcium channel blockers exert their antiepileptic effects by targeting T-type calcium channels, which are integral to transmitting nerve signals in the central nervous system. These channels allow the passage of calcium ions, which are vital for neuronal communication. By inhibiting T-type calcium channels, calcium channel blockers effectively reduce the release of neurotransmitters and...
Calcium channel blockers exert their antiepileptic effects by targeting T-type calcium channels, which are integral to transmitting nerve signals in the central nervous system. These channels allow the passage of calcium ions, which are vital for neuronal communication. By inhibiting T-type calcium channels, calcium channel blockers effectively reduce the release of neurotransmitters and...