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Sympathetic nerve hyperactivity of essential hypertension is lower in postmenopausal women than men

Journal of Human Hypertension volume 22, pages 544–549 (2008)Cite this article

Abstract

Sympathetic activation has been associated with the development and complications of hypertension. While the prevalence of hypertension and its cardiovascular risks in women are found to be less than in men and tend to become similar to men after the menopause, there have been no data on the level of sympathetic activation in postmenopausal women relative to men. Therefore, we planned to find out whether muscle sympathetic nerve hyperactivity of essential hypertension (EHT) in postmenopausal women is different from that in matched men. We quantified muscle sympathetic nerve activity (MSNA) as mean frequency of single units (s-MSNA) and multiunit bursts (b-MSNA) in 21 postmenopausal women with EHT (W-EHT) relative to 21 matched men with EHT (M-EHT), in comparison to two control groups of 21 normal women (W-NC) and 21 men (M-NC), respectively. The EHT groups had greater MSNA indices than NC groups. W-EHT had lower (P<0.05) s-MSNA (63±22.7 impulses per 100 cardiac beats) than M-EHT (78±11.2 impulses per 100 cardiac beats). W-NC had lower (P<0.05) s-MSNA (53±12.4 impulses per 100 cardiac beats) than M-NC (65±16.3 impulses per 100 cardiac beats). Similar results were obtained for b-MSNA. Postmenopausal women with EHT had lower level of central sympathetic hyperactivity than men. Similarly, normal postmenopausal women had lower MSNA than men. These findings suggest that postmenopausal women continue to have a lower sympathetic nerve activity than men even after the development of EHT, and that this could have implications for gender-specific management of hypertension.

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Acknowledgements

We thank Mr Jeff Bannister and Mrs Julie Corrigan for technical assistance and the British Heart Foundation for sponsorship (Grant No: FS/04/085).

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  1. The Department of Cardiology, Leeds Teaching Hospitals NHS Trust, Leeds, UK

    A J Hogarth, J Burns, A F Mackintosh & D A S G Mary

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  1. A J Hogarth
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  2. J Burns
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  3. A F Mackintosh
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  4. D A S G Mary
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Correspondence to A J Hogarth.

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Hogarth, A., Burns, J., Mackintosh, A. et al. Sympathetic nerve hyperactivity of essential hypertension is lower in postmenopausal women than men. J Hum Hypertens 22, 544–549 (2008). https://doi.org/10.1038/jhh.2008.31

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