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D-Galactose Causes Motor Coordination Impairment, and Histological and Biochemical Changes in the Cerebellum of Rats.

Abstract：

:Classical galactosemia is an inborn error of carbohydrate metabolism in which patients accumulate high concentration of galactose in the brain. The most common treatment is a galactose-restricted diet. However, even treated patients develop several complications. One of the most common symptoms is motor coordination impairment, including affected gait, balance, and speech, as well as tremor and ataxia. In the present study, we investigated the effects of intracerebroventricular galactose administration on motor coordination, as well as on histological and biochemical parameters in cerebellum of adult rats. Wistar rats received 5 μL of galactose (4 mM) or saline by intracerebroventricular injection. The animals performed the beam walking test at 1 and 24 h after galactose administration. Histological and biochemical parameters were performed 24 h after the injections. The results showed motor coordination impairment at 24 h after galactose injection. Galactose also decreased the number of cells in the molecular and granular layers of the cerebellum. The immunohistochemistry results suggest that the cell types lost by galactose are neurons and astrocytes in the spinocerebellum and neurons in the cerebrocerebellum. Galactose increased active caspase-3 immunocontent and acetylcholinesterase activity, decreased acetylcholinesterase immunocontent, glutathione, and BDNF levels, as well as caused protein and DNA damage. Our results suggest that galactose induces histological and biochemical changes in cerebellum, which can be associated with motor coordination impairment.

journal_name

Mol Neurobiol

journal_title

Molecular neurobiology

authors

Rodrigues AF,Biasibetti H,Zanotto BS,Sanches EF,Schmitz F,Nunes VT,Pierozan P,Manfredini V,Magro DDD,Netto CA,Wyse ATS

doi

10.1007/s12035-016-9981-4

subject

Has Abstract

pub_date

2017-08-01 00:00:00

pages

4127-4137

issue

6

eissn

0893-7648

issn

1559-1182

pii

10.1007/s12035-016-9981-4

journal_volume

54

pub_type

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