The effects of prenatal androgen exposure on cardiac function and tolerance to ischemia/reperfusion injury in male and female rats during adulthood
| Autor: | Fahimeh Ramezani Tehrani, Mohammad Reza Raoufy, Farzaneh Faraji Shahrivar, Mahsa Noroozzadeh, Razieh Bidhendi Yarandi |
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| Rok vydání: | 2019 |
| Předmět: |
Male
0301 basic medicine Cardiac function curve medicine.medical_specialty animal structures Offspring medicine.drug_class Hemodynamics Blood Pressure Myocardial Reperfusion Injury 030226 pharmacology & pharmacy General Biochemistry Genetics and Molecular Biology 03 medical and health sciences 0302 clinical medicine Pregnancy Internal medicine medicine Animals Rats Wistar General Pharmacology Toxicology and Pharmaceutics Testosterone business.industry Heart Drug Tolerance General Medicine Androgen medicine.disease Rats 030104 developmental biology Endocrinology Rate pressure product Prenatal Exposure Delayed Effects Androgens Ventricular pressure Female business Reperfusion injury |
| Zdroj: | Life Sciences. 229:251-260 |
| ISSN: | 0024-3205 |
| DOI: | 10.1016/j.lfs.2019.05.044 |
| Popis: | Cardiovascular diseases may originate from suboptimal intrauterine environments. We aimed to examine the effects of prenatal androgen exposure (PAE) on heart basal hemodynamic parameters and tolerance to ischemia/reperfusion (I/R) injury, in PAE adult females and males.Pregnant Wistar rats in the experimental group (n = 8) received 5 mg of testosterone (s.c. injection) on the 20th day of pregnancy, while controls received solvent. The hearts of adult female and male offspring were isolated and perfused in a Langendorff apparatus, values of left ventricular systolic pressure(LVSP), left ventricular developed pressure(LVDP), rate pressure product(RPP) and peak rates of positive and negative changes in left ventricular pressure(±dp/dt) were recorded using a power lab system.At baseline, PAE adult males demonstrated significant higher values of LVSP, LVDP, RPP and ± dp/dt, compared to controls and PAE adult females (p 0.05), while PAE adult females showed no significant differences compared to controls. In PAE adult males, LVSP, LVDP, RPP and ± dp/dt had significant decreasing trends per phases after I/R, compared to their controls and PAE females, while these decreasing trends were not statistically significant in PAE adult female rats vs. their controls.The impact of prenatal androgen exposure on adulthood cardiac function and tolerance to I/R is gender dependent, which may be partly explained by different cardiac effects of hyperandrogenism in males versus females. After prenatal androgen exposure, the baseline hemodynamic parameters of the hearts of adult males are increased; although they had less tolerance to I/R, findings however not observed in females. |
| Databáze: | OpenAIRE |
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