Fluorescence in situ hybridization FISH
Fluorescence in situ hybridization FISH is the microscopic examination of cells or chromosomes for the presence or absence of a fluorescently tagged probe. The probe is specific for the region of a chromosome containing the genes for an explicit genetic syndrome or condition. Interphase analysis can also be undertaken as a rapid investigation for whole chromosome trisomy 13,18 or 21. Each FISH probe is specific to a region of DNA and therefore the syndrome or region for investigation must be specified on the referral card.
FISH Fluorescence in situ hybridization can be undertaken on preparations from cultured or uncultured cells (e.g. prenatal and postnatal investigations)
Application of Fluorescence in situ hybridization FISH include:
- Prenatal diagnosis.
- The identification of specific chromosomal abnormalities.
- Molecular cytogenetic of birth defect and mental retardation.
- Cancer diagnosis.
For male infertility, screening tool like Sperm FISH is used for counseling couples with male factor infertility.
Puberty is the period of growth that bridges childhood to adulthood and results in physical and sexual maturity as well as the capacity for reproduction. Significant pathology can result in both advanced ……
There may be unpleasant outcome for the fetus or the mother or both, if the couple had not done the prenatal diagnosis. Congenital anomalies account for 20 to 25% of perinatal deaths. Prenatal ….
This test can detect loss or gain of material in any region of any chromosome as well as both balanced and unbalanced structural rearrangements such as translocations and inversions.
For male infertility, screening tool like Sperm FISH is used for counseling couples with male factor infertility. The analysis can also be undertaken as a rapid investigation for whole chromosome …….
Half of the first-trimester miscarriages are caused by fetal chromosome abnormalities diagnosed by conventional techniques. Techniques such as chromosomal comparative genomic ……..
Chromosomal abnormalities can happen in any cell in the body when egg and sperm cells are being made, during early fetal development, or after birth. A routine cytogenetic analysis involves ……
The availability of molecular tools has expanded the resolution and capability of cytogenetic analysis. The CIMAR cytogenetics facility accepts a variety of samples for karyotyping, FISH as well as ……..
Genetic disorders of the sex chromosome (like disorders of the autosomes) can be either numerical or structural, and can be present in all cells or in a mosaic form. Samples can be referred for a wide ……..
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