A new sex-specific underlying mechanism for female schizophrenia: accelerated skewed X chromosome inactivation.

Biology of Sex Differences
Xinzhu ZhangRena Li

Abstract

X chromosome inactivation (XCI) is the mechanism by which the X-linked gene dosage is adjusted between the sexes. Evidence shows that many sex-specific diseases have their basis in X chromosome biology. While female schizophrenia patients often have a delayed age of disease onset and clinical phenotypes that are different from those of males, it is unknown whether the sex differences in schizophrenia are associated with X-linked gene dosage and the choice of X chromosome silencing in female cells. Previous studies demonstrated that sex chromosome aneuploidies may be related to the pathogeneses of some psychiatric diseases. Here, we examined the changes in skewed XCI in patients with schizophrenia. A total of 109 female schizophrenia (SCZ) patients and 80 age- and sex-matched healthy controls (CNTLs) were included in this study. We evaluated clinical features including disease onset age, disease duration, clinical symptoms by the Positive and Negative Syndrome Scale (PANSS) and antipsychotic treatment dosages. The XCI skewing patterns were analyzed by the methylation profile of the HUMARA gene found in DNA isolated from SCZ patient and CNTL leukocytes in the three age groups. First, we found that the frequency of skewed XCI in S...Continue Reading

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Citations

Mar 4, 2021·Expert Review of Neurotherapeutics·Mary V Seeman
Jul 3, 2021·Biomedicines·Lucia MiglioreAndrea Stoccoro

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Methods Mentioned

BETA
PCR

Software Mentioned

SPSS
GeneMapper

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