INFLUENCE OF AMBIENT-TEMPERATURE ON CONTENT AND COMPOSITION OF BRAIN GANGLIOSIDES IN VERTEBRATES

被引:12
作者
BECKER, K [1 ]
RAHMANN, H [1 ]
机构
[1] UNIV STUTTGART HOHENHEIM,INST ZOOL,D-70593 STUTTGART,GERMANY
来源
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY B-BIOCHEMISTRY & MOLECULAR BIOLOGY | 1995年 / 111卷 / 02期
关键词
GANGLIOSIDE; TEMPERATURE; NEUROPLASTICITY; SEASONAL ADAPTATION; VERTEBRATE; BRAIN; FISH;
D O I
10.1016/0305-0491(94)00223-H
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The concentration and composition of brain gangliosides have been comparatively investigated by means of one- and two-dimensional high performance thin layer chromatography in several European fish species exhibiting a pronounced capacity for thermal adaptation. The values were compared with those of tropical and Antarctic fish as well as with homeo- and heterothermic mammals. The relative proportion of higher sialytated (more polar) ganglioside fractions was elevated in brains of fish (a) whose habitat was naturally cold or (b) that had been experimentally or seasonally adapted to a cold versus a warm habitat. Furthermore, in adaptation to the cold, more alkali-labile brain ganglioside fractions were found with the following sequence: Antarctic fish (53-67%), cold acclimated fish (45-51%), warm acclimated fish (38-44%), tropical species (<35%), hamsters in torpor (9%), active hamsters (4%) and pig (3%). These results indicate a possible mechanism at a molecular level to keep the neuronal membrane functional, even under changing temperature conditions.
引用
收藏
页码:299 / 310
页数:12
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