Expression of genes in the 111.35-116.16 million bp fragment of chromosome 13 in brain of mice with different predisposition to hereditary catalepsy.

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    • Abstract:
      Catalepsy is a pathological animal behavior that is usually associated with dysfunctions in the striatal pallidal system of the brain and can be caused by different reasons. It was previously demonstrated that hereditary catalepsy is linked to the 111.35-116.16 million bp fragment of chromosome 13 in mice. The level of mRNA content in 42 genes localized in this fragment was determined in the study. Two brain departments that are functionally associated with catalepsy (striatum and substantia nigra) were studied in mice from AKR line (resistant to catalepsy), cataleptic CBA line, and recombinant cataleptic AKR.CBA-D13Mit76 (D13) line. The latter was obtained by the transfer of indicated fragment of chromosome 13 from the CBA line to the genome of the AKR line. It was found that two genes ( Ndufs4 and Ppap2a) in the striatum and ten genes ( Esm1, Fst, Gm10735, Gm15322, Gm15323, Gm15324, Gm15325, Il6st, Il31ra, and Itga1) in the substantia nigra differ in the level of mRNA expression in AKR and D13 lines. The Mcidas gene mRNA level is lower in both structures in D13 line mice than in the AKR line. The expression of the Hspb3 and Mocs2 genes (that encode heat shock protein and molybdenum cofactor synthesis, respectively) is lower in the substantia nigra of CBA and D13 cataleptic line mice than in the AKR line resistant to catalepsy. These genes are considered to be the most likely candidate genes of the catalepsy. The coexpression of a large amount of genes in these brain structures in sick animals indicates the existence of a complex gene network that regulates hereditary catalepsy. [ABSTRACT FROM AUTHOR]
    • Abstract:
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