PMID- 32232612 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210402 IS - 0920-9069 (Print) IS - 1573-0778 (Electronic) IS - 0920-9069 (Linking) VI - 72 IP - 2 DP - 2020 Apr TI - Application of improved single blastomere fixation technique in preimplantation genetic diagnosis. PG - 217-226 LID - 10.1007/s10616-020-00371-1 [doi] AB - To modify a fixation method improving the intensity and clarity of the single blastomeric signal detection by fluorescence in situ hybridization (FISH) in preimplantation genetic diagnosis. 333 cycles of assisted reproduction with preimplantation genetic diagnosis FISH (PGD-FISH) performed in our hospital were analyzed and a total of 3452 single blastomeres were obtained. For the conventional fixation method, the blastomeres were kept in 0.1% sodium citrate with 0.2 mg/ml bovine serum albumin (BSA) for 2-5 min. FISH was performed and the internal relationship between embryo quality and fixed rate, signal detection rate, and signal determination rate was explored. With the modified method, 91.54% of blastomeres were fixed, while 88.30% were fixed with the conventional method. The signal detection rate was significantly increased for the modified group than for the conventional group (compared 98.53% with 94.78%, P < 0.001). Especially, the signal determination rate also showed a significant difference between the two methods (compared 90.51% with 74.17%, P < 0.001). After the development of the fixation method, the fixation efficiency and the signal determination rate were greatly improved, providing more definite diagnosis for the patient. It will hopefully allow more assisted reproduction programs to offer their patients preimplantation genetic diagnosis with FISH. FAU - Yu, Guanling AU - Yu G AD - Center for Reproductive Medicine, Shandong University, No. 157, Jingliu Road, Jinan, 250021, Shandong, China. FAU - Ma, Shuiying AU - Ma S AD - Center for Reproductive Medicine, Shandong University, No. 157, Jingliu Road, Jinan, 250021, Shandong, China. FAU - Zhu, Yueting AU - Zhu Y AD - Center for Reproductive Medicine, Shandong University, No. 157, Jingliu Road, Jinan, 250021, Shandong, China. FAU - Liu, Yujin AU - Liu Y AD - Center for Reproductive Medicine, Shandong University, No. 157, Jingliu Road, Jinan, 250021, Shandong, China. FAU - Zhang, Haozhen AU - Zhang H AD - Center for Reproductive Medicine, Shandong University, No. 157, Jingliu Road, Jinan, 250021, Shandong, China. FAU - Wu, Keliang AU - Wu K AD - Center for Reproductive Medicine, Shandong University, No. 157, Jingliu Road, Jinan, 250021, Shandong, China. wukeliang_527@163.com. FAU - Hao, Aijun AU - Hao A AD - Center for Reproductive Medicine, Shandong University, No. 157, Jingliu Road, Jinan, 250021, Shandong, China. aijunhao@sdu.edu.cn. AD - Department of Histology and Embryology, Shandong University School of Medicine, No. 44, Wenhua Xi Road, Jinan, 250012, Shandong, China. aijunhao@sdu.edu.cn. LA - eng GR - 2017YFC1001600/The National Key Research and Development Program of China/ GR - 81871168/National Natural Science Foundation of China/ PT - Journal Article DEP - 20200331 PL - United States TA - Cytotechnology JT - Cytotechnology JID - 8807027 PMC - PMC7192997 OTO - NOTNLM OT - Blastomere OT - Diagnosis OT - FISH OT - Fixation OT - Preimplantation COIS- The authors declare that there is no conflict of interests. EDAT- 2020/04/02 06:00 MHDA- 2020/04/02 06:01 PMCR- 2021/04/01 CRDT- 2020/04/02 06:00 PHST- 2019/07/29 00:00 [received] PHST- 2020/01/09 00:00 [accepted] PHST- 2020/04/02 06:00 [pubmed] PHST- 2020/04/02 06:01 [medline] PHST- 2020/04/02 06:00 [entrez] PHST- 2021/04/01 00:00 [pmc-release] AID - 10.1007/s10616-020-00371-1 [pii] AID - 371 [pii] AID - 10.1007/s10616-020-00371-1 [doi] PST - ppublish SO - Cytotechnology. 2020 Apr;72(2):217-226. doi: 10.1007/s10616-020-00371-1. Epub 2020 Mar 31.