Dunnett M, Harris R C, Soliman M Z, Suwar A A
Equine Sports Medicine Centre, Royal Veterinary College, North Mymms, Hertfordshire.
Res Vet Sci. 1997 May-Jun;62(3):213-6. doi: 10.1016/s0034-5288(97)90192-2.
High muscle carnosine und anserine contents contribute significantly to intra-cellular physico-chemical buffering. Our aim was to measure carnosine, anserine and taurine contents directly in individual type I, IIA and IIB fibres from the middle gluteus muscle of the camel. Mean carnosine contents in type I, IIA and IIB were 24.6 +/- 9.2, 39.4 +/- 11.4 and 42.8 +/- 18.8 mmol kg-1 dry weight (dw), respectively. Mean anserine contents in type I, IIA and IIB fibres were 30.0 +/- 8.4, 37.3 +/- 10.1 and 34.5 +/- 9.7 mmol kg-1 dw, respectively. Mean taurine contents in type I, IIA and IIB fibres were 42.4 +/- 15.9, 20.3 +/- 12.9 and 24.7 +/- 15.9 mmol kg-1 dw, respectively. Higher carnosine contents in type II fibres emphasise the importance of carnosine to intra-muscular acid-base regulation. A specific role for taurine in type I fibres in unclear.
高含量的肌肉肌肽和鹅肌肽对细胞内的物理化学缓冲作用有显著贡献。我们的目的是直接测量骆驼中臀肌中I型、IIA型和IIB型单根肌纤维中的肌肽、鹅肌肽和牛磺酸含量。I型、IIA型和IIB型肌纤维中的肌肽平均含量分别为24.6±9.2、39.4±11.4和42.8±18.8 mmol kg-1干重（dw）。I型、IIA型和IIB型肌纤维中的鹅肌肽平均含量分别为30.0±8.4、37.3±10.1和34.5±9.7 mmol kg-1 dw。I型、IIA型和IIB型肌纤维中的牛磺酸平均含量分别为42.4±15.9、20.3±12.9和24.7±15.9 mmol kg-1 dw。II型肌纤维中较高的肌肽含量强调了肌肽对肌肉内酸碱调节的重要性。牛磺酸在I型肌纤维中的具体作用尚不清楚。
