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党凯, 王琦, 张海祥, 高云芳, . 2006: 幼龄、亚成年、成年达乌尔黄鼠比目鱼肌Ⅰ和Ⅱ型肌纤维的比例与脏器指数的比较. 动物学研究, 27(6): 626-630.
引用本文: 党凯, 王琦, 张海祥, 高云芳, . 2006: 幼龄、亚成年、成年达乌尔黄鼠比目鱼肌Ⅰ和Ⅱ型肌纤维的比例与脏器指数的比较. 动物学研究, 27(6): 626-630.
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DANG Kai, WANG Qi, ZHANG Hai-xiang, GAO Yun-fang , *. 2006. Changes of Myosin ATPase Activities and Their Visceral Indices in Spermophilus dauricus Muscle During Postnatal Development. Zoological Research, 27(6): 626-630.
Citation: DANG Kai, WANG Qi, ZHANG Hai-xiang, GAO Yun-fang , *. 2006. Changes of Myosin ATPase Activities and Their Visceral Indices in Spermophilus dauricus Muscle During Postnatal Development. Zoological Research, 27(6): 626-630.
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幼龄、亚成年、成年达乌尔黄鼠比目鱼肌Ⅰ和Ⅱ型肌纤维的比例与脏器指数的比较

Changes of Myosin ATPase Activities and Their Visceral Indices in Spermophilus dauricus Muscle During Postnatal Development

    摘要
  • 摘要: 选取达乌尔黄鼠(Spermophilus dauricus)24只，按年龄分为幼龄、亚成年和成年3组。采用Ca 2+ -ATPase法测定比目鱼肌的mATPase活性，计算Ⅰ型和Ⅱ型肌纤维的比例，并称量达乌尔黄鼠脏器重量，计算脏器指数。结果显示：(1)成年组和亚成年组达乌尔黄鼠比目鱼肌中Ⅱ型肌纤维比例均极显著地低于幼龄组；成年组Ⅱ型肌纤维比例也有明显低于亚成年组的趋势；(2)幼龄组达乌尔黄鼠的胸腺指数显著高于亚成年组和成年组，脾脏指数显著高于亚成年组；肝脏指数则均极其显著低于亚成年组和成年组；成年组与亚成年组相比，肝脏指数显著增高，其他指数无显著性差异。以上结果提示，在生长发育过程中，达乌尔黄鼠比目鱼肌的mATPase活性逐渐降低，因而其Ⅱ型肌纤维的比例逐渐减小；胸腺指数、脾脏指数均逐渐降低，肝脏指数则逐渐升高。

     

    Abstract: Eighteen Spermophilus dauricus were divided according to age into the young group, the sub-adult group and the adult group. The activities of myosin ATPase (mATPase) of the soleus muscle were detected using the mATPase method. The percentages of TypeⅠandⅡ fibres were then determined. The viscera weight and viscera index were measured and calculated. The results revealed: (1) The proportion of TypeⅡ fibres in the soleus muscle were notably lower in the adult and the sub-adult than in the young of S. dauricus; and compared with the sub-adult, the adult showed a significant decrease; (2) the thymus index in young S. dauricus was markedly higher than those of the sub-adult and the adult, the splenic index (SI) in young S. dauricus was markedly higher than that of the sub-adult, whereas the hepatic index (HI) was distinctly lower than those of the sub-adult and the adult. When compared with the sub-adult, the hepatic index of the adult was sharply higher, whereas the other indices showed no significant variation between the two groups. In summary, the proportion of Type Ⅱ fibres gradually decreased with age, both the thymus and the splenic index also decreased with age, whereas the hepatic index gradually increased. These results suggest that the activities of mATPase decline during postnatal development in S. dauricus.

     

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