Probiotic Administration Attenuates Myocardial Hypertrophy and Heart Failure After Myocardial Infarction in the Rat
| Autor: | Morris Karmazyn, Venkatesh Rajapurohitam, Gregory B. Gloor, James V. Haist, Glynn Martin, Grace Ettinger, Cathy Huang, Xiaohong Tracey Gan, Gregor Reid, Jonathan R. Swann, James E. Sidaway, Jeremy P. Burton |
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| Rok vydání: | 2014 |
| Předmět: |
Male
medicine.medical_specialty Heart Ventricles Myocardial Infarction Diastole Administration Oral Hemodynamics Cardiomegaly Left ventricular hypertrophy Rats Sprague-Dawley Atrial natriuretic peptide Internal medicine medicine Animals Myocardial infarction Heart Failure Ejection fraction business.industry Probiotics medicine.disease Rats Disease Models Animal Endocrinology medicine.anatomical_structure Coronary Occlusion Heart failure Disease Progression Cardiology Cardiology and Cardiovascular Medicine business Artery |
| Zdroj: | Circulation: Heart Failure. 7:491-499 |
| ISSN: | 1941-3297 1941-3289 |
| DOI: | 10.1161/circheartfailure.113.000978 |
| Popis: | Background— Probiotics are extensively used to promote gastrointestinal health, and emerging evidence suggests that their beneficial properties can extend beyond the local environment of the gut. Here, we determined whether oral probiotic administration can alter the progression of postinfarction heart failure. Methods and Results— Rats were subjected to 6 weeks of sustained coronary artery occlusion and administered the probiotic Lactobacillus rhamnosus GR-1 or placebo in the drinking water ad libitum. Culture and 16s rRNA sequencing showed no evidence of GR-1 colonization or a significant shift in the composition of the cecal microbiome. However, animals administered GR-1 exhibited a significant attenuation of left ventricular hypertrophy based on tissue weight assessment and gene expression of atrial natriuretic peptide. Moreover, these animals demonstrated improved hemodynamic parameters reflecting both improved systolic and diastolic left ventricular function. Serial echocardiography revealed significantly improved left ventricular parameters throughout the 6-week follow-up period including a marked preservation of left ventricular ejection fraction and fractional shortening. Beneficial effects of GR-1 were still evident in those animals in which GR-1 was withdrawn at 4 weeks, suggesting persistence of the GR-1 effects after cessation of therapy. Investigation of mechanisms showed a significant increase in the leptin:adiponectin plasma concentration ratio in rats subjected to coronary ligation, which was abrogated by GR-1. Metabonomic analysis showed differences between sham control and coronary artery ligated hearts particularly with respect to preservation of myocardial taurine levels. Conclusions— The study suggests that probiotics offer promise as a potential therapy for the attenuation of heart failure. |
| Databáze: | OpenAIRE |
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