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Inicio Medicina Clínica Influencia de la presencia de sofocos durante la menopausia sobre el metabolismo...
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Vol. 114. Issue 2.
Pages 41-45 (January 2000)
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Vol. 114. Issue 2.
Pages 41-45 (January 2000)
Influencia de la presencia de sofocos durante la menopausia sobre el metabolismo del óxido nítrico. Efecto del tratamiento hormonal sustitutivo
Influence of the presence of hot flushes durig the menopause in the metabolism of nitric oxide. Influence of hormone replacement therapy
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Mariano Leal Hernándeza,**, José Abellán Alemána, Luis F. Carbonell Meseguerb, Julián Díaz Fernándezb, Francisco Alberto García Sánchezc, José María Martínez Selvac
a Medicina Interna. CS Beniaján-San Andrés. Murcia
b Departamento de Fisiología y Farmacología. Facultad de Medicina. Universidad de Murcia
c Departamento de Psicofisiología. Facultad de Psicología-Educación. Universidad de Murcia
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Fundamento

Determinar si la presencia de sofocos durante la menopausia se asocia a alteracionesen el metabolismo del óxido nítrico, actividad antioxidante total y otros parámetros bioquímicos.Determinar el efecto del tratamiento hormonal sustitutivo (THS) sobre el metabolismodel óxido nítrico, actividad antioxidante total y otros parámetros bioquímicos en mujeres menopáusicascon sofocos y sin ellos.

Pacientes y métodos

Estudio experimental que incluye 29 mujeres menopáusicas con sofocos(se les aplicó THS a 12) y 20 sin sofocos (se les aplicó THS a 6), sanas, de 45 a 55 años deedad, con un período de menopausia de entre uno y 5 años. Grupo control formado por 14 mujeresen edad fértil. Determinación de estradiol, nitritos-nitratos, actividad antioxidante total yparámetros generales, antes y 4-6 meses después del THS.

Resultados

Previamente al THS la presencia de sofocos se asoció a un menor nivel de actividadantioxidante total (p < 0,05) en plasma, sin diferencias en las concentraciones de nitritosnitratos.El THS se asoció a un incremento en las concentraciones de nitritos-nitratos y actividadantioxidante total (p < 0,05) en las mujeres menopáusicas, independientemente de quepresenten sofocos o no.

Conclusiones

La presencia de sofocos durante la menopausia indica un mayor grado de estrésoxidativo y por tanto un mayor riesgo cardiovascular. El THS disminuye el grado de estrés oxidativoy aumenta los metabolitos derivados del óxido nítrico en las mujeres menopáusicas cono sin sofocos.

Palabras clave:
Sofocos
Menopausia
Óxido nítrico
Tratamiento hormonal sustitutivo
Background

To asses if the hot flushes during the menopause are asociated to alterations inthe metabolism of nitric oxide, total antioxidant activity and other biochemical parameters. Toevaluate the effect of hormone replacement therapy (HRT) in the metabolism of nitric oxide,total antioxidant activity and biochemistry in menopausal women with and without hot flushes.

Patients and methods

Experimental study. This study included 29 healthy menopausal womenwith hot flushes (12 with HRT) and 20 without them (6 with HRT), 45-55 years old, with durationof menopause ranging from 1 to 5 years. Control group included 14 fertile women. Determinationsof estradiol, nitrite-nitrate, total antioxidant activity and basic analytic, were performedbefore previous and after 4-6 month of HRT therapy.

Results

Previously to HRT, hot flushes were associated to smaller level of total antioxidant activity(p < 0.05) in plasma, without differences in nitrite-nitrate concentrations. HRT was associatedto increase in total antioxidant activity level and nitrite-nitrate concentrations (p < 0.05)in menopausal women, with and without hot flushes.CONCLUSIONS: Hot flushes during the menopause indicate a high level of oxidative stress and ahigher cardiovascular risk. HRT decreased the oxidative stress level and increased the nitricoxide derivated metabolites in menopausal women with and without hot flushes.

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