Combined aerobic and resistance exercise training attenuates cardiac dysfunctions in a model of diabetes and menopause

Autor(es)

Sanches, Iris Callado ^[1] ; Buzin, Morgana ^[2] ; Conti, Filipe Fernandes ^[2] ; Dias, Danielle da Silva ^[2] ; dos Santos, Camila Paixao ^[2] ; Sirvente, Raquel ^[3] ; Cury Salemi, Vera Maria ^[3] ; Llesuy, Susana ^{[2, 4]} ; Irigoyen, Maria-Claudia ^[3] ; De Angelis, Katia ^{[5, 2]}

Afiliação do(s) autor(es)

^[1] Sao Judas Tadeu Univ USJT, Human Movement Lab, Sao Paulo - Brazil

^[2] Univ Nove Julho UNINOVE, Lab Translat Physiol, Sao Paulo - Brazil

^[3] Univ Sao Paulo, Heart Inst InCor, Sch Med, Hypertens Unit, Sao Paulo - Brazil

^[4] Univ Buenos Aires, Fac Farm & Bioquim, Buenos Aires, DF - Argentina

^[5] Fed Univ Sao Paulo UNIFESP, Dept Physiol, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: PLoS One; v. 13, n. 9 SEP 7 2018.
• Citações Web of Science: 3

Resumo

The study aimed at evaluating the effects of combined aerobic and resistance exercise training on cardiac morphometry and function, oxidative stress and inflammatory parameters in diabetic ovariectomized rats. For this, female Wistar rats (10 weeks-old) were divided into 4 groups (n = 8): euglycemic (E), diabetic (streptozotocin, 50 mg/kg, iv) (D), diabetic ovariectomized (DO) and trained diabetic ovariectomized (TDO). The combined exercise training was performed on a treadmill and in a ladder adapted to rats (8 weeks, at 40 +/- 60% of maximal capacity). The left ventricle (LV) morphometry and function were evaluated by echocardiography. Oxidative stress and inflammatory markers were measured on ventricles tissue. The sedentary diabetic animals (D and DO) showed impaired systolic and diastolic functions, as well as increased cardiac overload, evaluated by myocardial performance index (MPI-D: 0.32 +/- 0.05; DO: 0.39 +/- 0.13 vs. E: 0.25 +/- 0.07), in relation to E group. Systolic and MPI dysfunctions were exacerbated in DO when compared to D group. The DO group presented higher protein oxidation and TNF-alpha/IL-10 ratio than D groups. Glutathione redox ratio (GSH/GSSG) and IL-10 were decreased in both D and DO groups when compared to E group. Exercise training improved exercise capacity, systolic and diastolic functions and MPI (0.18 +/- 0.11). The TDO group showed reduced protein oxidation and TNF-alpha/IL-10 ratio and increased GSH/GSSG and IL-10 in relation to the DO group. These results showed that combined exercise training was able to attenuate the cardiac dysfunctions, probably by reducing inflammation and oxidative stress in an experimental model of diabetes and menopause. (AU)

• Processo FAPESP: 12/20141-5 - Efeitos do treinamento físico aeróbio, resistido ou combinado em modelos experimentais de disfunções cardiometabólicas associadas à privação dos hormônios ovarianos
• Beneficiário: Kátia de Angelis Lobo D Avila
• Modalidade de apoio: Auxílio à Pesquisa - Regular