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Indian J Physiol Pharmacol ; 2015 Apr-June ; 59(2): 204-210
Article Dans Anglais | IMSEAR | ID: sea-158715

Résumé

Bisphenol A (BPA) attenuated phenylbiguanide (PBG)-induced cardio-respiratory reflexes involving decreased vagal afferent activity. BPA leaches out from plastics thus it is expected that chronic exposure to plastic boiled (PBW) water will also produce similar changes. Therefore, the present study was undertaken to evaluate the effects of chronic ingestion of PBW on PBG evoked reflexes and were compared with BPA. Adult female rats were ingested BPA containing pellets (2 μg/kg body weight)/PBW/tap water (ad libitum) for 30 days. On day 30, the animals were anaesthetized and BP, ECG and respiratory excursions were recorded. Further, PBG was injected intravenously to evoke cardio-respiratory reflexes and at the end lungs were excised for histopathological examination. BPA concentration in PBW was 6.6 μg/ml estimated by HPLC. In rats receiving tap water, PBG produced bradycardia, hypotension and tachypnoea. In PBW/ BPA treated groups, PBG-induced reflexes were attenuated significantly along with emphysematous and consolidative changes in lungs. The present results indicate that PBW attenuates the protective cardio- respiratory reflexes and also produces histopathological changes in lungs.

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