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Yusuf HK, Islam MS. Myelinogenic cycle and myelination status of the brain of the catfish, Heteropneustes fossilis. Int J Dev Neurosci. 1984;2(4):331-6doi: 10.1016/0736-5748(84)90069-8.
Yusuf, H. K., & Islam, M. S. (1984). Myelinogenic cycle and myelination status of the brain of the catfish, Heteropneustes fossilis. International journal of developmental neuroscience : the official journal of the International Society for Developmental Neuroscience, 2(4), 331-6. https://doi.org/10.1016/0736-5748(84)90069-8
Yusuf, H K, and Islam, M S. "Myelinogenic cycle and myelination status of the brain of the catfish, Heteropneustes fossilis." International journal of developmental neuroscience : the official journal of the International Society for Developmental Neuroscience vol. 2,4 (1984): 331-6. doi: https://doi.org/10.1016/0736-5748(84)90069-8
Yusuf HK, Islam MS. Myelinogenic cycle and myelination status of the brain of the catfish, Heteropneustes fossilis. Int J Dev Neurosci. 1984;2(4):331-6. doi: 10.1016/0736-5748(84)90069-8. PMID: 24874143.
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Int J Dev Neurosci. 1984;2(4):331-6. doi: 10.1016/0736-5748(84)90069-8.

Myelinogenic cycle and myelination status of the brain of the catfish, Heteropneustes fossilis.

International journal of developmental neuroscience : the official journal of the International Society for Developmental Neuroscience

H K Yusuf, M S Islam

Affiliations

  1. Department of Biochemistry, University of Dhaka, Dhaka-2, Bangladesh.

PMID: 24874143 DOI: 10.1016/0736-5748(84)90069-8

Abstract

The lipid composition of the brain of the catfish, Heteropneustes fossilis (Bloch) was studied over the age period of 2-12 months, during which time the body weight increased from 2.5 to 33 g. The brain weight increased from 28 to 84 mg between 2 and 9 months of age, with a further increase of only 7 mg during the following three months. The concentration of cholesterol increased slowly up to 5 months of age, from which time the concentration began to increase rapidly and attained adult values at 8 months. The concentration of total lipid-P increased steadily up to the age of 7 months and remained almost constant thereafter. In contrast, there was very little increase in the concentration of the galactolipids (cerebroside + sulphatide) until month 5, after which the concentration increased rapidly to reach the adult level at 8 months of age. The concentration of cholesterol esters decreased during development; however, there occurred a transient rise at 5 months of age, which continued up to 8 months. These data indicate that the period between months 5 and 8 is one of active myelination in the brain of this species. The mole ratio of cholesterol, phospholipids, and galactolipids in the adult fish brain was 31:53:1, much higher than that in adult mammalian brain. Moreover, within the phospholipids, ethanolamine phosphoglyceride comprised < 10%, as against the corresponding value in the mammals of about 40%. These data therefore suggest a low level of myelination in the brain of catfish, as compared to that in higher species.

Copyright © 1984. Published by Elsevier Ltd.

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