PMID- 14649381 OWN - NLM STAT- MEDLINE DCOM- 20040629 LR - 20240505 IS - 1058-0468 (Print) IS - 1573-7330 (Electronic) IS - 1058-0468 (Linking) VI - 20 IP - 10 DP - 2003 Oct TI - The relationship of pronuclear stage morphology and chromosome status at cleavage stage. PG - 413-20 AB - PURPOSE: Infertile couples undergoing in vitro fertilization-embryo transfer (IVF-ET) program were included to study the relationship of pronuclear stage morphology and chromosome status at cleavage stage. METHODS: Eighteen to twenty-one hours after fertilization, zygotes were checked for pronuclear morphology with modified Scott Z-score system. After embryo transfer on day 3, arrested or non-transferred 2 PN embryos were spread for fluorescence in situ hybridization (FISH) staining of probes to chromosomes 18, X and Y. RESULTS: Ninety-eight embryos were successfully fixed and stained. The chromosome status were recorded in each 2 PN score group: 7 (54%) of 13 embryos in Z2 group, 14 (35%) of 40 in Z3 group and 10 (36%) of 28 in Z4 group being normal diploid. Z1 group has 12 (71%) of 17 embryos being normal diploid, which is significantly more than Z3 (p = 0.020) and Z4 group (p = 0.033). CONCLUSION: Our results demonstrated a high probability to get normal diploid embryos if good morphology at pronuclear stage was used as selection criteria, especially for Z1 score embryos. FAU - Chen, Chun-Kai AU - Chen CK AD - Department of Obstetrics and Gynecology, Lin-Kou Medical Center, Chang Gung Memorial Hospital and Medical College, 5, Fu-Hsing Street, Kwei-Shan, Tao-Yuan 333, Taiwan. ckchen@cgmh.org.tw FAU - Shen, Guan-Yi AU - Shen GY FAU - Horng, Shang-Gwo AU - Horng SG FAU - Wang, Chia-Woei AU - Wang CW FAU - Huang, Hong-Yuan AU - Huang HY FAU - Wang, Hsin-Shin AU - Wang HS FAU - Soong, Yung-Kuei AU - Soong YK LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - J Assist Reprod Genet JT - Journal of assisted reproduction and genetics JID - 9206495 SB - IM MH - Blastomeres/cytology/physiology MH - *Chromosomes, Human MH - Chromosomes, Human, X MH - Chromosomes, Human, Y MH - Diploidy MH - Embryo Implantation MH - *Embryo Transfer MH - Embryonic and Fetal Development/*physiology MH - Female MH - *Fertilization in Vitro MH - Humans MH - Male MH - Oocytes/*cytology/physiology MH - *Ovulation Induction MH - Patient Selection MH - Pregnancy MH - Probability MH - Zygote/ultrastructure PMC - PMC3455171 EDAT- 2003/12/03 05:00 MHDA- 2004/06/30 05:00 PMCR- 2004/10/01 CRDT- 2003/12/03 05:00 PHST- 2003/12/03 05:00 [pubmed] PHST- 2004/06/30 05:00 [medline] PHST- 2003/12/03 05:00 [entrez] PHST- 2004/10/01 00:00 [pmc-release] AID - 474259 [pii] AID - 10.1023/a:1026232625659 [doi] PST - ppublish SO - J Assist Reprod Genet. 2003 Oct;20(10):413-20. doi: 10.1023/a:1026232625659.