نتایج جستجو برای: chromosome micro deletions
تعداد نتایج: 248731 فیلتر نتایج به سال:
We used cytogenetic and restriction fragment length polymorphism (RFLP) analysis methods to define genetic alterations and also correlate the changes with histopathology in renal cortical tumors. The study series is comprised of 50 renal tumors in 4 histological categories: (a) clear cell, nonpapillary, renal cell carcinoma (RCC) (n = 32); (b) nonclear cell, nonpapillary RCC (n = 10); (c) papil...
The major mechanism for ring chromosome formation is thought to result from breakage and reunion at the breakpoints on the long and short arms of a chromosome. This fusion event can produce terminal arm inversions, deletions, and duplications that determine the resulting phenotype.[1] Ring chromosome 13 is relatively uncommon, with an estimated incidence of 1/58,000 live births. Clinical severi...
Chromosomal abnormalities are an important cause of epilepsy [Singh et al., 2002], which might be the presenting symptom in the context of a specific syndrome. A recent article by Langer et al. [2006] reports on a translocation t(2;15) with deletion at 2q24-q31 in a girl with epilepsy, dysmorphic features, and severe developmental delay. As this case adds to the growing list of severe epilepsy ...
Bladder cancer is one of the most common cancers in the world, leading to approximately 145,000 deaths annually. Bladder cancer is typically managed by surgical removal of the tumor; however, the recurrence rate is disappointingly very high, often requiring systemic chemotherapy. Improvement in the diagnosis and prognosis of bladder cancer will only come from a comprehensive understanding of th...
The caps on the ends of chromosomes, called telomeres, keep the ends of chromosomes from appearing as DNA double-strand breaks (DSBs) and prevent chromosome fusion. However, subtelomeric regions are sensitive to DSBs, which in normal cells is responsible for ionizing radiation-induced cell senescence and protection against oncogene-induced replication stress, but promotes chromosome instability...
We have developed a rapid screening protocol for deletion analysis of the complete AZFa sequence (i.e. 792 kb) on the Y chromosome of patients with idiopathic Sertoli-cell-only (SCO) syndrome. This Y deletion was mapped earlier in proximal Yq11 and first found in the Y chromosome of the SCO patient JOLAR, now designated as the AZFa reference patient. We now show that similar AZFa deletions occu...
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