Genetics and Fish Health

HER2 Testing in Invasive Breast Cancer: a Comparison between Immunohistochemistry and FISH Assays

Species identification reveals mislabeling of important fish products in Iran by DNA barcoding

This study reports on the molecular identification of fish species from processed products which had a priori been classified as belonging to 5 important species in Iran for human consumption. DNA barcoding using direct sequencing of an approximately 650bp of mitochondrial Cytochrome oxidase subunit I (COI) gene revealed incorrect labeling of Narrow-barred Spanish mackerel samples. High occurre...

Characterization of a Rare Mosaicism in Autosomal Translocation of t(5;21) Using Conventional Cytogenetics and FISH Methods

Background: Mosaicism of a normal cell population and an unbalanced autosomal chromosome rearrangement is rarely seen. If the abnormal cell line contributes to a minor part of soma, the phenotype is expected to be normal. Case Report: We report a 29-year-old woman who had balance chromosomal translocation of 46,XX,t(5;21) with a 2-year-old affected girl, characterized by mental retardation, dys...

Tips and Tricks in Fluorescence In-situ Hybridization (FISH)- based Preimplantation Genetic Diagnosis /Screening (PGD/PGS)

As numerical and structural defects in chromosomes are an inevitable consequence of IVF, Pre-implantation genetic diagnosis and screening (PGD/PGS) methods are used for detecting abnormalities in embryos before implantation to the uterus to increase the successful rate of IVF. Pre-implantation genetic diagnosis and screening approaches can be achieved by different techniques such as NGS, CGH an...

Development of a probe consist of three cosmids to enumerate the chromosome 13 on uncultured lymphocytes or amniocytes using interphase FISH

 Abstract Background: To produce a reliable probe suitable for aneuploidy detection of chromosome 13 on uncultured lymphocytes and amniocytes by fluorescence in situ hybridization (FISH), we used a contig of three overlapping cosmids mapped to 13q12.3. Methods: The cosmid DNA carrying the expected sequences of human chromosome 13 was isolated from host cells and labelled with biotin-11-dUTP. Th...

Applications of multiplex ligation-dependent probe amplification (MLPA) method in diagnosis of cancer and genetic disorders

Introduction: Lots of human diseases and syndromes result from partial or complete gene deletions and duplications or changes of certain specific chromosomal sequences. Many various methods are used to study the chromosomal aberrations including Comparative Genomic Hybridization (CGH), Fluorescent in Situ Hybridization (FISH), Southern blots, Multiplex Amplifiable Probe Hybridisation (MAP...