PMID- 12390787 OWN - NLM STAT- MEDLINE DCOM- 20021125 LR - 20080401 IS - 1000-2588 (Print) IS - 1000-2588 (Linking) VI - 22 IP - 3 DP - 2002 Mar TI - [Normal pregnancy in a woman having had a child with trisomy 21 syndrome before: application of preimplantation genetic diagnosis]. PG - 269-71 AB - OBJECTIVE: To study the value of preimplantation genetic diagnosis (PGD) before pregnancy for couples who are exposed to high risk of trisomy 21 syndrome in their progenies to obtain birth of healthy child by in vitro fertilization procedures. METHODS: Conventional hormone replacement treatment with intracytoplasmic sperm injection (ISCI) was administered for ovum fertilization. One or two cells (blastomeres) were aspirated from the preimplantation embryo that had grown to 6 to 10 cells (day 3 post fertilization) for PGD with fluorescence in situ hybridization (FISH), and 3 embryos with normal chromosome were transferred into the uterus. RESULTS: PGD was carried out in a total of 8 embryos with valid diagnoses in 7, of which 6 were identified as normal embryos and 1 had trisomy 21 syndrome. Pregnancy was obtained that resulted in the birth of a healthy baby. CONCLUSION: Detection of chromosomal abnormalities such as trisomy 21 syndrome is feasible for PGD with FISH. FAU - Luo, Chen AU - Luo C AD - Center of Assisted Reproduction, Nanfang Hospital, First Military Medical University, Guangzhou 510515, China. FAU - Xing, Fu-Qi AU - Xing FQ FAU - Luo, Shen-Qiu AU - Luo SQ LA - chi PT - Case Reports PT - English Abstract PT - Journal Article PL - China TA - Di Yi Jun Yi Da Xue Xue Bao JT - Di 1 jun yi da xue xue bao = Academic journal of the first medical college of PLA JID - 9426110 SB - IM MH - Adult MH - Down Syndrome/*genetics MH - Fatal Outcome MH - Female MH - Fertilization in Vitro MH - Humans MH - In Situ Hybridization, Fluorescence MH - Infant, Newborn MH - Male MH - Pregnancy MH - *Preimplantation Diagnosis EDAT- 2002/10/23 04:00 MHDA- 2002/11/26 04:00 CRDT- 2002/10/23 04:00 PHST- 2002/10/23 04:00 [pubmed] PHST- 2002/11/26 04:00 [medline] PHST- 2002/10/23 04:00 [entrez] PST - ppublish SO - Di Yi Jun Yi Da Xue Xue Bao. 2002 Mar;22(3):269-71.