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001-es BibID:	BIBFORM093219
035-os BibID:	(cikkazonosító)8364297
Első szerző:	Szabó Renáta
Cím:	Hormone Replacement Therapy and Aging : a Potential Therapeutic Approach for Age-Related Oxidative Stress and Cardiac Remodeling / Renáta Szabó, Alexandra Hoffmann, Denise Börzsei, Krisztina Kupai, Médea Veszelka, Anikó Magyariné Berkó, Imre Pávó, Rudolf Gesztelyi, Béla Juhász, Zsolt Turcsán, Anikó Pósa, Csaba Varga
Dátum:	2021
ISSN:	1942-0900 1942-0994
Megjegyzések:	Advanced age is an independent risk factor for cardiovascular diseases, which might be further exacerbated by estrogen deficiency. Hormone replacement therapy (HRT) decreases cardiovascular risks and events in postmenopausal women; however, its effects are not fully elucidated in older individuals. Thus, the aim of our study is to examine the impact of HRT on oxidant/antioxidant homeostasis and cardiac remodeling. In our experiment, control (fertile) and aging (~20-month-old) female Wistar rats were used. Aging rats were further divided into estrogen- (E2, 0.1 mg/kg/day per os) or raloxifene- (RAL, 1.0 mg/kg/day per os) treated subgroups. After 2 weeks of treatment, cardiac heme oxygenase (HO) activity, total glutathione (GSH) content, matrix metalloproteinase-2 (MMP-2) activity, and the concentrations of collagen type I and tissue inhibitor of metalloproteinase (TIMP-2), as well as the infarct size, were determined. The aging process significantly decreased the antioxidant HO activity and GSH content, altered the MMP-2/TIMP-2 signaling, and resulted in an excessive collagen accumulation, which culminated in cardiovascular injury. However, 2 weeks of either E2 or RAL treatment enhanced the antioxidant defense mechanisms and attenuated cardiac remodeling related to aging. Our findings clearly show that 2-week-long HRT is a potential intervention to bias successful cardiovascular aging via reducing oxidative damage and cardiovascular dysfunction.
Tárgyszavak:	Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk estrogen deficiency hormone replacement therapy cardiac remodeling aging
Megjelenés:	Oxidative Medicine and Cellular Longevity. - 2021 (2021), p. 1-9. -
További szerzők:	Hoffmann Alexandra Börzsei Denise Kupai Krisztina Veszelka Médea Magyariné Berkó Anikó Pávó Imre J. Gesztelyi Rudolf (1969-) (kísérletes farmakológus) Juhász Béla (1978-) (kísérletes farmakológus) Turcsán Zsolt Pósa Anikó Varga Csaba (orvos)
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