نتایج جستجو برای: genetic abnormalities
تعداد نتایج: 704179 فیلتر نتایج به سال:
background: cytogenetic study of reproductive wastage is an important aspect in determining the genetic background of early embryogenesis. approximately 15 to 20% of all pregnancies in humans are terminated as recurrent spontaneous abortions (rsas). the aim of this study was to detect chromosome abnormalities in couples with rsas and to compare our results with those reported previously. materi...
Extramedullary multiple myeloma (or extramedullary disease, EMD) is an aggressive form of (MM) that occurs when malignant plasma cells become independent the bone marrow microenvironment. This may occur alongside MM diagnosis or in later stages relapse and confers extremely poor prognosis. In era novel agents anti-myeloma therapies, incidence EMD increasing, making this a more prevalent challen...
Abstract Background Some ultrasonic soft markers can be found during ultrasound examination. However, the etiology of fetuses with is still unknown. This study aimed to evaluate genetic and clinical value chromosomal abnormalities copy number variations (CNVs) in markers. Methods Among 1131 fetuses, 729 had single marker, 322 two markers, 80 three or more All underwent conventional karyotyping,...
Genetic causes have a considerable involvement in infertility. Well-known examples are some chromosomal translocations or sex-chromosomal abnormalities and Y-chromosome deletions. The most common chromosomal aberrations associated especially with severe oligo- and azoospermia are sex chromosome aneuploidies and chromosomal translocations. Consequently, occurrence of aneuploid embryos will lower...
Purpose: Several causes for primary ovarian insufficiency have been described, including iatrogenic and environmental factor, viral infections, chronic disease as well as genetic alterations. Given the large number of genes described in the literature so far, the aim of this review was to collect all the genetic mutations associated with non-syndromic primary ovarian insufficiency. Methods: All...
Background: Recurrent pregnancy loss (RPL) is a common and distressing disorder. RPL is a devastating reproductive problem affecting approximately 5% of couples trying to conceive. If we camper the rate of miscarriage in couples may experience RPL with the pregnancy loss rate in general population we may calculate that it is at least two or three times higher than expected. This study aimed to ...
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