PMID- 36344553 OWN - NLM STAT- MEDLINE DCOM- 20221109 LR - 20230105 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 12 IP - 1 DP - 2022 Nov 7 TI - MUC7 VNTR polymorphism and association with bronchial asthma in Egyptian children. PG - 18910 LID - 10.1038/s41598-022-21631-4 [doi] LID - 18910 AB - Overproduction of mucins in the airways donates largely to airway blockage in asthma patients. Glycoprotein MUC7 plays a role in the clearance of bacteria and has anti-candidacidal criteria. Our goal was to investigate the association between the MUC7 variable number of tandem repeats (VNTR) polymorphism and bronchial asthma among Egyptian children. The MUC7 VNTR polymorphism was investigated among 100 children with bronchial asthma and 100 healthy controls using polymerase chain reaction (PCR) method. Serum levels of immunoglobulin E (IgE), tumor necrosis factor-alpha (TNF-alpha), and transforming growth factor-beta1 (TGF-beta1) were assessed by enzyme-linked immunosorbent assay (ELISA) technique. The frequencies of 6*5 genotype, 5*5 genotype, (6*5 + 5*5) genotypes, and MUC7*5 allele of the MUC7 VNTR variant were significantly lower among asthmatic patients than controls (p < 0.015, OR = 0.39, 95% CI = 0.19-0.81; p = 0.03, OR = 0.18, 95% CI = 0.04-0.86; p < 0.001, OR = 0.29, 95% CI = 0.15-0.58; p < 0.001, OR = 0.3, 95% CI = 0.17-0.55, respectively). The (6*5 + 5*5) genotypes of the MUC7 VNTR variant were not associated with the clinical manifestations and serum levels of IgE, TNF-alpha, and TGF-beta1 among asthmatic patients (p > 0.05). In conclusion, the (6*5 + 5*5) genotypes of the MUC7 VNTR variant may have a protective role for bronchial asthma in Egyptian children. CI - (c) 2022. The Author(s). FAU - Saad, Entsar A AU - Saad EA AUID- ORCID: 0000-0001-6477-8098 AD - Chemistry Department, Faculty of Science, Damietta University, Damietta, 34517, Egypt. entsarsaad@gmail.com. FAU - Elsaid, Afaf M AU - Elsaid AM AD - Genetics Unit, Children Hospital, Mansoura University, Mansoura, Egypt. FAU - Shoaib, Rasha M S AU - Shoaib RMS AD - Food and Dairy Sciences and Technology Department, Faculty of Environmental Agricultural Sciences, Arish University, Arish, North Sinai, Egypt. FAU - Megahed, Khaled F AU - Megahed KF AD - Department of Pediatrics, Faculty of Medicine, Mansoura University, Mansoura, Egypt. FAU - Elsharawy, Amal N AU - Elsharawy AN AD - Chemistry Department, Faculty of Science, Damietta University, Damietta, 34517, Egypt. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20221107 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (Transforming Growth Factor beta1) RN - 0 (Tumor Necrosis Factor-alpha) RN - 37341-29-0 (Immunoglobulin E) RN - 0 (MUC7 protein, human) RN - 0 (Mucins) RN - 0 (Salivary Proteins and Peptides) SB - IM MH - Child MH - Humans MH - *Polymorphism, Genetic MH - Transforming Growth Factor beta1/genetics MH - Minisatellite Repeats MH - Tumor Necrosis Factor-alpha/genetics MH - Egypt MH - *Asthma/genetics MH - Genotype MH - Immunoglobulin E/genetics MH - Genetic Predisposition to Disease MH - Mucins/genetics MH - Salivary Proteins and Peptides/genetics PMC - PMC9640678 COIS- The authors declare no competing interests. EDAT- 2022/11/08 06:00 MHDA- 2022/11/10 06:00 PMCR- 2022/11/07 CRDT- 2022/11/07 23:21 PHST- 2022/01/28 00:00 [received] PHST- 2022/09/29 00:00 [accepted] PHST- 2022/11/07 23:21 [entrez] PHST- 2022/11/08 06:00 [pubmed] PHST- 2022/11/10 06:00 [medline] PHST- 2022/11/07 00:00 [pmc-release] AID - 10.1038/s41598-022-21631-4 [pii] AID - 21631 [pii] AID - 10.1038/s41598-022-21631-4 [doi] PST - epublish SO - Sci Rep. 2022 Nov 7;12(1):18910. doi: 10.1038/s41598-022-21631-4.