نتایج جستجو برای: chromosomal
تعداد نتایج: 47372 فیلتر نتایج به سال:
introduction: infertility is a significant multifactorial disorder that can be caused by chromosomal abnormalities. in this study, we aimed to cytogenetically investigate male and female patients admitted to the genetic diagnostic laboratory of kayseri educational hospital in kayseri, turkey with varied clinical prediagnoses of infertility. materials and methods: chromosomes from cultured perip...
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 impressio...
Background Embryo morphology has been proposed as an alternative marker of chromosomal status. The objective of this retrospective cohort study was to investigate the association between the chromosomal status on day 3 of embryo development and blastocyst morphology.Embryo morphology has been proposed as an alternative marker of chromosomal status. The objective of this retrospective cohort stu...
Background: It is reported that high frequency of chromosomal aberrations in peripheral blood lymphocytes of individuals is a marker of cancer predisposition. The aim of this study was to investigate the in vitro frequency of chromosomal damage in lymphocytes of patients with head and neck cancer against gamma irradiation compared with those in healthy individuals. Methods: In a case and con...
background: the high fertilization failure after ivf treatment cycles could be related to chromosomal abnormalities. this study was carried out to assess the frequency of chromosomal abnormality on human oocytes lacking signs of fertilization 18-20 h after insemination . materials and methods: on day one, 18-20 h after insemination (ivf), fertilization was confirmed when two pronuclei (normal i...
objective: this study determined the chromosomal constitution of recurrent spontaneous abortions by comparative genomic hybridization (cgh) analysis of fetal samples. material and methods: forty pregnant women with early recurrent pregnancy losses aged 21 to 42 years old from tehran university of medical sciences affiliated hospitals entered in this descriptive study. hibridization analysis o...
The effects of commercial formulations Viburnum opulus and Equisetum arvense extract on anti-cytotoxicity anti-genotoxicity were evaluated at the root tip Allium cepa L. Distilled water (negative control), dimethyl sulfoxide (DMSO), ethyl methane sulfonate (EMS, positive 5% 10% doses V. E. extracts applied for 24 48 hours. Cytotoxicity genotoxicity by calculating %mitotic index %chromosomal abe...
background: most of our current understanding of the biological effects of exposure to ionising radiation is based on conventional cytogenetic techniques, which enable us to determine the relationship between chromosomal aberration and dose received by radiation workers. however, conventional techniques have numerous limitations and chromosomal aberrations can be easily missed. since fish plays...
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