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001-es BibID:	BIBFORM091835
Első szerző:	Börzsei Denise
Cím:	Exercise-mitigated sex-based differences in aging : from genetic alterations to heart performance / Denise Börzsei, Dániel Priksz, Renáta Szabó, Mariann Bombicz, Zoltán Karácsonyi, László G. Puskás, Liliána Z. Fehér, Zsolt Radák, Krisztina Kupai, Anikó Magyariné Berkó, Csaba Varga, Béla Juhász, Aniko Pósa
Dátum:	2021
ISSN:	0363-6135
Megjegyzések:	The prevalence of cardiovascular diseases dramatically increases with age; therefore, striving to maintain a physiological heart function is particularly important. Our aim was to study the voluntary exercise-evoked cardioprotective effects in aged male and female rats, from genetic alterations to changes in heart performance. We divided 20-month-old female and male Wistar rats to control and running groups. After the 12-wk-long experimental period, echocardiographic measurements were performed. Afterwards, hearts were either removed for biochemical measurements or mounted into a Langendorff-perfusion system to detect infarct size. The following genes and their proteins were analyzed from heart: catechol-O-methyltransferase (Comt), endothelin-1 (Esm1), Purkinje cell protein-4 (Pcp4), and osteoglycin (Ogn). Recreational exercise caused functional improvements; however, changes were more prominent in males. Cardiac expression of Comt and Ogn was reduced as a result of exercise in aged males, whereas Pcp4 and Esm1 showed a marked overexpression, along with a markedly improved diastolic function. The key result of this study is that exercise enhanced the expression of the Pcp4 gene and protein, a recently described regulator of calcium balance in cardiomyocytes, and suppressed Comt and Ogn gene expression, which has been associated with impaired cardiac function. In addition, as a result of exercise, a significant improvement was observed in the size of infarct elicited by left anterior descending coronary artery occlusion. Our results clearly show that age and sex-dependent changes were both apparent in key proteins linked to cardiovascular physiology. Exercise-moderated fundamental genetic alterations may have contributed to the functional adaptation of the heart.NEW & NOTEWORTHY Voluntary exercise has proved to be an effective therapeutic tool to improve cardiac function in aged rats with clearly visible sex differences. Long-term exercise is associated with decreased Ogn and Comt expression and enhanced presence of Pcp4 and Esm1 genes. Sex-dependent changes were also observed in the expression of the cardiovascular key proteins. Fundamental alterations in gene and protein expression may contribute to the improvement of cardiac performance.
Tárgyszavak:	Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Pcp4 aging echocardiography exercise gene expression
Megjelenés:	American Journal Of Physiology-Heart And Circulatory Physiology. - 320 : 2 (2021), p. 854-866. -
További szerzők:	Priksz Dániel (1989-) (farmakológus) Szabó Renáta Bombicz Mariann (1987-) (gyógyszerész) Karácsonyi Zoltán (1975-) (ortopéd és baleseti sebész) Puskás László G. Fehér Liliána Z. (Szeged) Radák Zsolt Kupai Krisztina Magyariné Berkó Anikó Varga Csaba (orvos) Juhász Béla (1978-) (kísérletes farmakológus) Pósa Anikó
Pályázati támogatás:	GINOP-2.3.4-15-2016-00002 GINOP
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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