نتایج جستجو برای: chromosomal
تعداد نتایج: 47372 فیلتر نتایج به سال:
one of the major causes of spontaneous abortion before the fourth month of pregnancy is chromosomal abnormalities. we report an unusual case of a familial balanced chromosomal translocation in a consanguineous couple who experienced 4 spontaneous abortions. chromosomal studies were performed on the basis of g-banding technique at high resolution and revealed 46, xx, t (16 6) (p12 q26) and 46, x...
background: approximately 205 million pregnancies occur each year in the worldwide. on the other hand, spontaneous abortion has been reported in 15-20% of all diagnosed pregnancies. the most common cause of spontaneous abortion is chromosomal abnormalities of the embryo. robertsonian translocation carriers specially 21-14 are the most common balanced rearrangement among the carrier couples with...
in this study, chromosome analyses were performed on 70 infertile azoospermic and oligospermic (<20 million/ml) men, and also cultures of peripheral blood lymphocytes by high resolution banding method were analysed as well. it is revealed 8 (11.43 percent) men with chromosomal abnormality. there were 31.4 percent patients with azoospermia and 68.6 percent with oligospermia from several thousand...
uterine leiomyomas/fibroids are the most common pelvic tumors of the female genital tract. the initiators remaining unknown, estrogens and progesterone are considered as promoters of fibroid growth. fibroids are monoclonal tumors showing 40-50% karyo-typically detectable chromosomal abnormalities. cytogenetic aberrations involving chromosomes 6, 7, 12 and 14 constitute the major chromosome abno...
background: different studies show that chromosomal balance translocation in the parents can cause recurrent spontaneous abortions. incidence of chromosomal translocation abnormalities in couples with repeated abortions is from 0% to 31%. objective: the purpose of this research was studying the presence or absence of chromosomal abnormalities and heteromorphism in couples with recurrent abortio...
introduction: most of the hematologic malignancies are heterogenous with regard to morphology, immunophenotype, and genetic rearrangements. multiple recurrent chromosomal aberrations have been identified by conventional cytogenetic analysis, which is now widely recognized as one of the most important diagnostic and prognostic determinants in these patients. patients and methods: bone marrow sam...
spontaneous abortion (sab) is the most common complication of early pregnancy. numerous risk factors are associated with an increased risk of pregnancy loss such as: blighted ovum. the aim of this study was to determine the frequency of balanced chromosomal translocations in couples with a history of recurrent spontaneous abortions and ultrasound diagnosed blighted ovum. sixty eight couples wit...
objective: approximately 15-20% of clinically recognizable pregnancies end in spontaneous abortion. the incidence of chromosomal abnormalities in those abortions is as high as 50%.a modest but clinically important proportion of spontaneous abortions is caused by a balanced chromosomal aberration in one of the parents. this results from the production of gametes and embryos with unbalanced chrom...
background and objective: failure to thrive (ftt) is a sign that describes a particular problem rather than a diagnosis and explain growth failure or more advanced failure to gain weight appropriately. the aim of this study was to determine the prevalence and type of chromosomal abnormalities in patients presented with ftt. materials and method: one hundred ftt cases with clinical impression o...
due to importance of combination therapies in cancer treatment, this study was performed to find the effects of hyperthermia and neutron irradiation and heir combination on the human lymphocytes. blood samples were treated separately with 41.5 °c for 30 and 60 minutes, 43 °c for 15 and 30 minutes, as well as 10 cgy neutron irradiation. they also treated with hyperthermia followed by irradiation...
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