The combination of in vitro fertilization (IVF) with PCR technologies enables diagnosis of single gene defects for preimplantation genetic diagnosis. This has been accomplished by two-step nested PCR, or PEP-PCR followed by nested PCR processes. To improve the detection of single cell genetic defect
Strategies for preimplantation genetic diagnosis of single gene disorders by DNA amplification
โ Scribed by Dagan Wells; Jon K. Sherlock
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 223 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0197-3851
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โฆ Synopsis
Preimplantation genetic diagnosis (PGD) is an alternative to prenatal diagnosis for ensuring the genetic health of offspring born to families affected by inherited disease. This paper sets out to review current protocols for the diagnosis of single gene defects in human preimplantation embryos. These methods, which depend on DNA amplification using PCR, are subject to a variety of pitfalls, such as allele dropout (ADO), contamination and reduced amplification efficiency. Advances in single cell DNA amplification, such as improved multiplex PCR protocols, fluorescent-PCR and whole genome amplification (WGA), can be applied to address some of these problems. Different PGD strategies are discussed in the context of their clinical application.
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Preimplantation genetic diagnosis (PGD) allows the selection of unaffected IVF embryos for transfer in couples that are at risk for transmitting genetic diseases. For monogenic diseases, polymerase chain reaction (PCR)-based diagnosis is usually performed on single blastomeres. In Greece, up to 10 p