منابع مشابه
Aneuploidy and Confined Chromosomal Mosaicism in the Developing Human Brain
BACKGROUND Understanding the mechanisms underlying generation of neuronal variability and complexity remains the central challenge for neuroscience. Structural variation in the neuronal genome is likely to be one important mechanism for neuronal diversity and brain diseases. Large-scale genomic variations due to loss or gain of whole chromosomes (aneuploidy) have been described in cells of the ...
متن کاملChromosome-specific accumulation of aneuploidy in the aging mouse brain.
Chromosomal aneuploidy, the gain or loss of whole chromosomes, is a hallmark of pathological conditions and a causal factor of birth defects and cancer. A number of studies indicate that aneuploid cells are present at a high frequency in the brain of mice and humans, suggesting that mosaic aneuploidies are compatible with normal brain function and prompting the question about their consequences...
متن کاملChromosomal Aneuploidy in Azoospermic Men
The aim of this study was to estimate the prevalence of chromosome abnormalities in patients with azoospermia, in our material. Preoperative evaluation included routine andrological investigations with 2 semen analysis, ultrasound, hormonal and genetic examinations. In the last three years, 73 biopsies were performed for testicular sperm extraction in 71 patients. Non-obstructive azoospermia wa...
متن کاملRegion- and Cell-specific Aneuploidy in Brain Aging and Neurodegeneration
Variations in genomic DNA content, or aneuploidy, are a well-recognized feature of normal human brain development. Whether changes in the levels of aneuploidy are a factor in Alzheimer's disease (AD) is less clear, as the data reported to date vary substantially in the levels of aneuploidy detected (0.7-11.5%), possibly due to methodological limitations, but also influenced by individual, regio...
متن کاملImpact of DNA Damage on the Frequency of Sperm Chromosomal Aneuploidy in Normal and Subfertile Men
Background: Various frequencies of sperm aneuploidy are reported in sperms of subfertile patients compared to normal individuals. Moreover, sperm DNA damage is shown to be associated with male infertility. In this study, the rate of DNA damage and frequencies of aneuploidy in sperms of subfertile patients was investigated. Methods: Semen samples were obtained from healthy normal and subfertile ...
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ژورنال
عنوان ژورنال: Mechanisms of Ageing and Development
سال: 2011
ISSN: 0047-6374
DOI: 10.1016/j.mad.2011.04.008