PMID- 32115387 OWN - NLM STAT- MEDLINE DCOM- 20210413 LR - 20210413 IS - 2300-732X (Electronic) IS - 1642-431X (Linking) VI - 20 IP - 2 DP - 2020 Jun TI - Detection of low-grade mosaicism and its correlation with hormonal profile, testicular volume, and semen quality in a cohort of Egyptian Klinefelter and Klinefelter-like patients. PG - 259-263 LID - S1642-431X(19)30401-2 [pii] LID - 10.1016/j.repbio.2020.02.002 [doi] AB - Klinefelter syndrome (KS) is the most common chromosomal syndrome, causing infertility in men and leading to non-obstructive azoospermia. Previous studies on mosaicism have shown contradictory results on its correlation with both serum hormone levels and the presence of spermatozoa in the ejaculate of KS, KS-like, and non-KS-like infertile patients. So, the present study was designed to detect low-grade mosaicism in the peripheral blood lymphocytes and buccal mucosa cells of 14 KS and 8 KS-like patients by using fluorescence in situ hybridization (FISH) and to investigate its correlation with luteinizing hormone (LH), follicle-stimulating hormone (FSH), and testosterone (T) levels, testicular volume, and semen analysis compared with 10 normal healthy fertile men. Our results indicated that mosaicism was only found in 42.9 % of the KS patients and completely absent in all KS-like patients. Moreover, mosaicism has led to complete azoospermia and non-significant differences in both hormone levels and testicular volume between mosaic and non-mosaic KS patients. All KS patients demonstrated significant differences in both hormone levels and testicular volume compared with normal men. Conversely, they revealed non-significant differences in hormone levels and significant differences in testicular volume compared with KS-like patients. Additionally, the KS-like patients exhibited non-significant variations in both LH and FSH levels and significant variations in T level and testicular volume compared with normal men. Moreover, all KS-like patients had azoospermia, except for one patient who showed oligozoospermia. Therefore, no correlations were found either between mosaicism and serum hormone levels or with testicular volume and semen analysis. CI - Copyright (c) 2020 Society for Biology of Reproduction & the Institute of Animal Reproduction and Food Research of Polish Academy of Sciences in Olsztyn. Published by Elsevier B.V. All rights reserved. FAU - Madian, Abdelrahman AU - Madian A AD - Human Cytogenetics, National Research Center, 12622, Cairo, Egypt. FAU - Eid, Maha M AU - Eid MM AD - Human Cytogenetics, National Research Center, 12622, Cairo, Egypt. FAU - Shahin, Adel A B AU - Shahin AAB AD - Department of Zoology, Faculty of Science, Minia University, 61519, El Minia, Egypt. Electronic address: adel.shahin@mu.edu.eg. FAU - Mazen, Inas AU - Mazen I AD - Department of Clinical Genetics, National Research Center, 12622, Cairo, Egypt. FAU - El-Bassyouni, Hala T AU - El-Bassyouni HT AD - Department of Clinical Genetics, National Research Center, 12622, Cairo, Egypt. FAU - Eid, Ola M AU - Eid OM AD - Human Cytogenetics, National Research Center, 12622, Cairo, Egypt. LA - eng PT - Journal Article DEP - 20200227 PL - Poland TA - Reprod Biol JT - Reproductive biology JID - 101160559 SB - IM MH - Humans MH - Klinefelter Syndrome/*genetics MH - Male MH - *Mosaicism MH - Testis/*pathology OTO - NOTNLM OT - Azoospermia OT - Buccal mucosa cells OT - FSH OT - Oligozoospermia OT - Peripheral blood lymphocytes COIS- Declaration of Competing Interest The authors declare no conflicts of interest and that the present research work did not receive any specific grant from funding agents. EDAT- 2020/03/03 06:00 MHDA- 2021/04/14 06:00 CRDT- 2020/03/03 06:00 PHST- 2019/11/04 00:00 [received] PHST- 2020/02/05 00:00 [revised] PHST- 2020/02/14 00:00 [accepted] PHST- 2020/03/03 06:00 [pubmed] PHST- 2021/04/14 06:00 [medline] PHST- 2020/03/03 06:00 [entrez] AID - S1642-431X(19)30401-2 [pii] AID - 10.1016/j.repbio.2020.02.002 [doi] PST - ppublish SO - Reprod Biol. 2020 Jun;20(2):259-263. doi: 10.1016/j.repbio.2020.02.002. Epub 2020 Feb 27.