Ovarian steroids act as respiratory stimulant and antioxidant against the causes and consequences of sleep-apnea in women
| Autor: | Alexandra Ribon-Demars, Sofien Laouafa, Vincent Joseph, Ryma Boukari, Aida Bairam |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Pulmonary and Respiratory Medicine
medicine.medical_specialty Physiology 030204 cardiovascular system & hematology Biology medicine.disease_cause Antioxidants 03 medical and health sciences 0302 clinical medicine Sleep Apnea Syndromes Cell surface receptor Internal medicine medicine Humans Respiratory system Receptor Progesterone Estradiol General Neuroscience Respiration Sleep apnea Intermittent hypoxia medicine.disease Sleep in non-human animals Endocrinology Female Steroids 030217 neurology & neurosurgery Oxidative stress Hormone |
| Zdroj: | Respiratory physiologyneurobiology. 239 |
| ISSN: | 1878-1519 |
| Popis: | Evidence supports the importance of ovarian hormones as potential tools against sleep apneas in women. On one hand, progesterone is largely acknowledged as being a respiratory stimulant that reduces the frequency of apneas, but the underlying mechanisms remain poorly understood. Recent studies in mice showed that the respiratory effects of progesterone are mediated by at least two classes of progesterone receptors, including the nuclear (nPR) and membrane receptors (mPR). Some of these receptors (nPR) have sex-specific effects on the frequency of apneas recorded during sleep in mice, while mPRβ acts in males as well as in females. Moreover, sleep apnea is a condition that induces an “oxidative stress” response in several tissues, and this contributes to the deleterious consequences of sleep apneas, including the development of hypertension. While estradiol is recognized as an antioxidant hormone, its potential protective role has remained mostly ignored in the field. We will review recent data supporting an antioxidant role of estradiol in female rats exposed to intermittent hypoxia, a reliable animal model of sleep apnea. Since estradiol has two main receptors (ERα and ERβ) we will discuss their relative implications, and present new data showing a key role for ERα to prevent the hypertension induced by intermittent hypoxia. Overall this review highlights the fact that ovarian hormones could potentially be used as efficient tools against the causes (i.e. instabilities of the respiratory control system) and consequences (oxidative stress) of sleep apnea. |
| Databáze: | OpenAIRE |
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