RESUMEN
Cyantraniliprole is a synthetic insecticide used to control pests of up to 23 different types of crops. It is able to modulate ryanodine-like calcium channels, which are widely found in the organism of insects and mammals. The objective of this research was to verify the possible reproductive effects of adult female Wistar rats exposure to cyantraniliprole. Animals (67 days old) were exposed to the chemical at doses of 10 or 150 mg/kg/day, orally, for 28 consecutive days (control animals received only the vehicle). Vaginal secretions were collected during the exposure period to assess the regularity of the estrous cycle; the liver, kidneys, pituitary gland, adrenal gland, uterus, and ovaries were collected and weighed; reproductive organs were assessed for histopathological evaluation and for biochemical markers of oxidative stress and progesterone plasma level was measured. Both doses caused negative changes in the morphology and redox system of the uterus and ovaries. Animals exposed to 10 mg/kg also exhibited higher level of plasma progesterone, elevated levels of lipid peroxidation in reproductive organs, increased superoxide dismutase activity in the uterus and glutathione peroxidase activity on the ovary, while the 150 mg/kg group exhibited an increment in estrous cycle length and diminished uterine glandular epithelium. Based on these results, we conclude that cyantraniliprole may have acted as an endocrine disruptor, and its effects are mediated by oxidative stress.
Asunto(s)
Disruptores Endocrinos/toxicidad , Insecticidas/toxicidad , Pirazoles/toxicidad , ortoaminobenzoatos/toxicidad , Animales , Colinesterasas/metabolismo , Ciclo Estral/efectos de los fármacos , Femenino , Glutatión Transferasa/metabolismo , Ovario/efectos de los fármacos , Ovario/metabolismo , Ovario/patología , Estrés Oxidativo/efectos de los fármacos , Oxidorreductasas/metabolismo , Progesterona/sangre , Ratas Wistar , Reproducción/efectos de los fármacos , Útero/efectos de los fármacos , Útero/metabolismo , Útero/patologíaRESUMEN
Bupropion hydrochloride (BUP) has been associated with male sexual dysfunction. The aim of this study was to evaluate the effects of BUP on the reproductive function of male mice and to evaluate offspring development. The mice were distributed into BUP group (40mgkg-1) and control group (saline). On Day 35 of treatment the males were placed to mate with females and then killed on Day 46 for evaluation of reproductive function. On Day 18 of pregnancy, pregnant females were killed for evaluation of congenital malformations in the offspring. The BUP group showed a decrease in the Johnsen score (Control, 9.354±0.092; BUP, 7.615±0.147), Sertoli (Control, 5.623±0.184; BUP, 4.215±0.097) and Leydig (Control, 11.430±0.817; BUP, 7.531±0.213) cell counts, testosterone levels (Control, 783.5±154.2ngdL-1; BUP, 201.4±54.8ngdL-1) and sperm production (Control, 2.852±0.211; BUP, 1.988±0.116) and increased morphological alterations of the sperm head (Control, 8.134%; BUP, 10.423%) and tail (Control, 4.96%; BUP, 16.211%). The congenital malformations observed in BUP-derived offspring were: kyphosis (Control, 0.00%; BUP, 5.26%), retroverted rear legs (Control, 14.43%; BUP, 53.68%), incomplete ossification of the supraoccipital and exoccipital (Control, 21.82%; BUP, 86.00%) and sternum (Control, 25.45%; BUP, 82.00%). BUP had toxic effects on testicular function and teratogenic potential.