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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >ROLE OF THYROIDAL AND TESTICULAR HORMONES IN REGULATION OF TISSUE RESPIRATION IN HIBERNATING AND NON-HIBERNATING SPECIES OF FROGS
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ROLE OF THYROIDAL AND TESTICULAR HORMONES IN REGULATION OF TISSUE RESPIRATION IN HIBERNATING AND NON-HIBERNATING SPECIES OF FROGS

机译：甲状腺激素在未成年物种的组织呼吸中的调控作用

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In vivo and in vitro effects of E-triiodothyronine (L-T-3), L-tetraiodothyronine (L-T-4), propyl thiouracil (PTU), testosterone (T) and cyproterone acetate (CA) were studied on the rate of tissue respiration in Indian streaked frog, Rana limnocharis (a hibernating species) and Indian skipper frog Rana cyanophlyctis (a non-hibernating species) maintained under natural climatic conditions during winter and summer months, The rate of tissue respiration was measured with the help of an oxygen electrode, Hormones were used in physiological doses, PTU invariably decreased respiratory rate in both the species, However, tissues of R. cyanophlcytic were comparatively more sensitive to thyroid hormones, Both in vivo and in vitro administration of testosterone significantly increased and in vivo administration of Cri. significantly decreased the rate of tissue respiration in both tile species irrespective of seasons and temperature, These findings suggest that while the oxidative mechanisms of the two species differ in their sensitivity to thyroid hormones, endogenous thyroid hormones seem to play an important role in energy metabolism of frogs, Further, testicular hormones seem to he directly involved in the regulation of the oxidative metabolism and might be responsible for maintaining normal activity of R. cyanophlyctis during winter months. [References: 35]
机译：研究了E-三碘甲状腺素（LT-3），L-四碘甲状腺素（LT-4），丙基硫氧嘧啶（PTU），睾丸激素（T）和醋酸环丙孕酮（CA）的体内和体外效应在冬季和夏季，在自然气候条件下维持印度条纹蛙，蛙蛙（冬眠物种）和印度蛙蛙蛙蓝藻（非冬眠物种），借助氧气电极测量组织呼吸速率，激素以生理剂量使用，PTU均在这两个物种中均降低了呼吸频率，但是，蓝藻的组织对甲状腺激素的敏感性相对较高。体内和体外施用睾丸激素均显着增加，体内施用Cri则更为明显。不论季节和温度如何，这两种瓷砖的组织呼吸速率均显着降低。这些发现表明，尽管这两种瓷砖的氧化机制对甲状腺激素的敏感性不同，但内源性甲状腺激素似乎在其能量代谢中起着重要作用。此外，睾丸激素似乎直接参与了氧化代谢的调节，并可能在冬季维持蓝藻R.正常活动。 [参考：35]

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