دورية أكاديمية
Effects of enriched-potassium diet on cardiorespiratory outcomes in experimental non-ischemic chronic heart failure
| العنوان: | Effects of enriched-potassium diet on cardiorespiratory outcomes in experimental non-ischemic chronic heart failure |
|---|---|
| المؤلفون: | Karla G. Schwarz, Katherin V. Pereyra, Camilo Toledo, David C. Andrade, Hugo S. Díaz, Esteban Díaz-Jara, Domiziana Ortolani, Angélica Rios-Gallardo, Paulina Arias, Alexandra Las Heras, Ignacio Vera, Fernando C. Ortiz, Nibaldo C. Inestrosa, Carlos P. Vio, Rodrigo Del Rio |
| المصدر: | Biological Research, Vol 54, Iss 1, Pp 1-14 (2021) |
| بيانات النشر: | BMC, 2021. |
| سنة النشر: | 2021 |
| المجموعة: | LCC:Biology (General) |
| مصطلحات موضوعية: | Heart failure, Potassium supplemented diet, Autonomic imbalance, Breathing disorders, Chemoreflex function, Biology (General), QH301-705.5 |
| الوصف: | Abstract Background Chronic heart failure (CHF) is a global health problem. Increased sympathetic outflow, cardiac arrhythmogenesis and irregular breathing patterns have all been associated with poor outcomes in CHF. Several studies showed that activation of the renin-angiotensin system (RAS) play a key role in CHF pathophysiology. Interestingly, potassium (K+) supplemented diets showed promising results in normalizing RAS axis and autonomic dysfunction in vascular diseases, lowering cardiovascular risk. Whether subtle increases in dietary K+ consumption may exert similar effects in CHF has not been previously tested. Accordingly, we aimed to evaluate the effects of dietary K+ supplementation on cardiorespiratory alterations in rats with CHF. Methods Adult male Sprague–Dawley rats underwent volume overload to induce non-ischemic CHF. Animals were randomly allocated to normal chow diet (CHF group) or supplemented K+ diet (CHF+K+ group) for 6 weeks. Cardiac arrhythmogenesis, sympathetic outflow, baroreflex sensitivity, breathing disorders, chemoreflex function, respiratory–cardiovascular coupling and cardiac function were evaluated. Results Compared to normal chow diet, K+ supplemented diet in CHF significantly reduced arrhythmia incidence (67.8 ± 15.1 vs. 31.0 ± 3.7 events/hour, CHF vs. CHF+K+), decreased cardiac sympathetic tone (ΔHR to propranolol: − 97.4 ± 9.4 vs. − 60.8 ± 8.3 bpm, CHF vs. CHF+K+), restored baroreflex function and attenuated irregular breathing patterns. Additionally, supplementation of the diet with K+ restores normal central respiratory chemoreflex drive and abrogates pathological cardio-respiratory coupling in CHF rats being the outcome an improved cardiac function. Conclusion Our findings support that dietary K+ supplementation in non-ischemic CHF alleviate cardiorespiratory dysfunction. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 0717-6287 |
| العلاقة: | https://doaj.org/toc/0717-6287Test |
| DOI: | 10.1186/s40659-021-00365-z |
| الوصول الحر: | https://doaj.org/article/1c51032886d943c3bbe20d56af62ebfdTest |
| رقم الانضمام: | edsdoj.1c51032886d943c3bbe20d56af62ebfd |
| قاعدة البيانات: | Directory of Open Access Journals |
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Cardiac arrhythmogenesis, sympathetic outflow, baroreflex sensitivity, breathing disorders, chemoreflex function, respiratory–cardiovascular coupling and cardiac function were evaluated. Results Compared to normal chow diet, K+ supplemented diet in CHF significantly reduced arrhythmia incidence (67.8 ± 15.1 vs. 31.0 ± 3.7 events/hour, CHF vs. CHF+K+), decreased cardiac sympathetic tone (ΔHR to propranolol: − 97.4 ± 9.4 vs. − 60.8 ± 8.3 bpm, CHF vs. CHF+K+), restored baroreflex function and attenuated irregular breathing patterns. Additionally, supplementation of the diet with K+ restores normal central respiratory chemoreflex drive and abrogates pathological cardio-respiratory coupling in CHF rats being the outcome an improved cardiac function. 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