摘要
新变态小蟾蜍(Bufo regularis Reuss)后肢膝关节水平的再生能力要比同一时期腿中段或更远水平要高。组织发生表明股骨残端上方有大块软骨性髁状帽。再生情况较好的另一些例子,恢复部分可达到小腿中段或只达到小腿基部,并带有或不带有畸形的膝关节,截肢组可达40%,而关节断离组可达83%。后一组中再生体中有一个或多个软骨化中心,表明其分化程度。这提示关节断离的机械作用可能引起一些有利于再生的进行性的组织学变化。对两种手术(截肢和关节断离)后早期组织发生及手术水平的残肢组织和少量肌肉的作用进行了讨论。
Ability of regeneration of the hind limbs in newly metamorphosed toadlets of Bufo regularis Reuss, was comparatively better, at the knee joint level, than at mid thigh level or even at more distal levels, shank and ankle in the same stage and species. Histogenesis revealed the formation of a massive cartilaginous condylar cap over the femur stump. Other cases which showed better regeneration restored part up to about half of the shank region or only the base of the shank with/without illformed knee-joint, reaching 40% of the cases in the amputation series and 83% in the disarticulation series. One or more chondrifying centre(s), in regenerates of the latter series recall signs of organization. It is suggested that the mechanical stress caused by the disarticulation process evoked progressive histological change in favour of better regeneration. Histogenesis during the early post-operation days of the two types of experiments (amputation & disarticulation)and role of stump tissues with paucity of muscles at that level, are discussed.
出处
《实验生物学报》
CSCD
1992年第4期359-367,共9页
Acta Biologiae Experimentalis Sinica
关键词
组织发生
膝关节
蟾蜍
Histogenesis and regeneration. Hind limbs. Knee joint. Bufo regularis.
