[Klinefelter's disease].

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Published: October 1961

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Background: Klinefelter syndrome is considered one of the most common sex chromosome disorders affecting males. The presence of an extra X chromosome can alter the tendency to develop various cancers, including lymphomas. Lacrimal gland lymphoma is a disease of the elderly, with a median age of presentation of 70 years.

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X-inactive-specific transcript: a long noncoding RNA with a complex role in sex differences in human disease.

Biol Sex Differ

December 2024

Department of Internal Medicine, Pulmonary, Critical Care, and Sleep Medicine, Rush University Medical Center, Chicago, IL, 60612, USA.

In humans, the X and Y chromosomes determine the biological sex, XX specifying for females and XY for males. The long noncoding RNA X-inactive specific transcript (lncRNA XIST) plays a crucial role in the process of X chromosome inactivation (XCI) in cells of the female, a process that ensures the balanced expression of X-linked genes between sexes. Initially, it was believed that XIST can be expressed only from the inactive X chromosome (Xi) and is considered a typically female-specific transcript.

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Microcell-mediated chromosome transfer between non-identical human iPSCs.

Mol Ther Nucleic Acids

December 2024

Department of Chromosome Biomedical Engineering, Integrated Medical Sciences, Graduate School of Medical Sciences, Tottori University, 86 Nishi-cho, Yonago, Tottori 683-8503, Japan.

Article Synopsis
  • Microcell-mediated chromosome transfer (MMCT) is a new technique for manipulating chromosome numbers using human induced pluripotent stem cells (hiPSCs) to create disease models with hyperaneuploidy.
  • The study highlights the efficiency of using hiPSCs as both donor and recipient cells in the chromosome transfer process, allowing for the tagging and transfer of specific chromosomes like Chr21 and ChrY using CRISPR-Cas9.
  • This innovative method aims to improve the study of rare diseases and enhance our understanding of early development by integrating key chromosomal regions into hiPSCs.
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Objectives: We aimed to determine the prevalence of female infertility in 204 countries and territories from 1990 to 2019.

Design: We evaluated the female infertility global burden between 1990 and 2019 in this systematic study.

Materials: The Global Health Data Exchange query tool ( View Article and Find Full Text PDF

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