منابع مشابه
Loss of heterozygosity in laryngeal cancer.
PURPOSE Head and neck cancers account for about 6% of all human cancers. Molecular changes leading to the disease development and progression still remain not fully explained. Examination of loss of heterozygosity (allelic loss, LOH) using the specific microsatellite markers is a method of choice in assessing tumour suppressor genes (TSGs) localisation in human genome. MATERIAL AND METHODS Th...
متن کاملLoss of heterozygosity and microsatellite instability as predictive markers among Iranian esophageal cancer patients
Objective(s): Variation in microsatellite sequences that are dispersed in the genome has been linked to a deficiency in cellular mismatch repair system and defects in several genes of this system are involved in carcinogenesis. Our aim in this study was to illustrate microsatellite DNA alteration in esophageal cancer. Materials and Methods: DNA was extracted from formalin fixed paraffin embedde...
متن کاملMicrosatellite instability and loss of heterozygosity in breast cancer.
Microsatellite instability (MSI) has been described in colorectal and other cancers. The purpose of this study was to determine the presence of MSI in breast cancer and to correlate its occurrence with clinicopathological parameters. For microsatellite markers we examined mono-, di-, tri-, and tetranucleotide repeats that, due to their polymorphic nature, may also be used to investigate loss of...
متن کاملLoss of heterozygosity and p53 gene mutations in breast cancer.
Immunopositivity for the p53 tumor suppressor gene product was evaluated in 133 breast cancers and compared to loss of heterozygosity (LOH) at various chromosomal loci. The validity of p53 immunopositivity as an indicator for p53 mutations was verified using two molecular assays of p53 mutations: single stranded conformational polymorphism (32 cases) and/or direct sequencing (14 cases). Immunop...
متن کاملInfrequent loss of chromosomal heterozygosity in human stomach cancer.
By molecular genetic approach using polymorphic DNA markers which detect allelic deletion at specific chromosomal loci, we analyzed 30 human stomach cancers for possible loss of chromosomal heterozygosity. We analyzed 25 loci on 18 different chromosomes covering regions frequently deleted in several types of cancers. Loss of chromosomal heterozygosity was observed only in five of 30 cases exami...
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ژورنال
عنوان ژورنال: Oral Science International
سال: 2011
ISSN: 1348-8643
DOI: 10.1016/s1348-8643(11)00027-9