PMID- 31414088 OWN - NLM STAT- MEDLINE DCOM- 20200213 LR - 20200213 IS - 2515-4184 (Electronic) IS - 2515-4184 (Linking) VI - 15 IP - 5 DP - 2019 Oct 7 TI - Reduced sialyl-Lewis(x) on salivary MUC7 from patients with burning mouth syndrome. PG - 331-339 LID - 10.1039/c9mo00061e [doi] AB - We analysed and compared MUC7 O-glycosylation and inflammatory biomarkers in saliva from female patients with burning mouth syndrome (BMS) and gender/age-matched controls. Oligosaccharides from salivary MUC7 from BMS and controls were released. Inflammatory mediators were measured by multiplex proximity extension assay. Presence of sialyl-Lewisx (Si-Lex) epitope on MUC7 was confirmed using Western blot. MUC7 O-glycans and measured inflammatory biomarkers were found to be similar between BMS and controls. However, oligosaccharides sialyl-Lewisx (Si-Lex) was found to be reduced in samples from BMS patients. Positive correlation (combined patients and controls) was found between levels of C-C motif chemokine 19 (CCL-19) and the amount of core-2 oligosaccharides on MUC7 as well as fractalkine (CX3CL1) and level of sialylation. Patients with BMS were shown to represent a heterogeneous group in terms of inflammatory biomarkers. This indicates that BMS patients could be further stratified on the basis of low-level inflammation. The results furthermore indicate that reduced sialylation of MUC7, particularly Si-Lex, may be an important feature in patients with BMS. However, the functional aspects and potential involvement in immune regulation of Si-Lex remains unclear. Our data suggests a chemokine driven alteration of MUC7 glycosylation. FAU - Acharya, Shikha AU - Acharya S AD - Department of Oral Microbiology and Immunology, Institute of Odontology, The Sahlgrenska Academy, University of Gothenburg, PO 450, 40530, Gothenburg, Sweden. shikha.acharya@gu.se. FAU - Jin, Chunsheng AU - Jin C FAU - Bylund, Johan AU - Bylund J FAU - Shen, Qiujin AU - Shen Q FAU - Kamali-Moghaddam, Masood AU - Kamali-Moghaddam M FAU - Jontell, Mats AU - Jontell M FAU - Carlen, Anette AU - Carlen A FAU - Karlsson, Niclas G AU - Karlsson NG LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Mol Omics JT - Molecular omics JID - 101713384 RN - 0 (MUC7 protein, human) RN - 0 (Mucins) RN - 0 (Salivary Proteins and Peptides) RN - 0 (Sialyl Lewis X Antigen) SB - IM MH - Aged MH - Aged, 80 and over MH - Burning Mouth Syndrome/*genetics/*metabolism MH - Female MH - Humans MH - Male MH - Middle Aged MH - Mucins/*metabolism MH - Salivary Proteins and Peptides/*metabolism MH - Sialyl Lewis X Antigen/*metabolism EDAT- 2019/08/16 06:00 MHDA- 2020/02/14 06:00 CRDT- 2019/08/16 06:00 PHST- 2019/08/16 06:00 [pubmed] PHST- 2020/02/14 06:00 [medline] PHST- 2019/08/16 06:00 [entrez] AID - 10.1039/c9mo00061e [doi] PST - ppublish SO - Mol Omics. 2019 Oct 7;15(5):331-339. doi: 10.1039/c9mo00061e.