{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T16:53:57Z","timestamp":1785430437782,"version":"3.56.0"},"reference-count":56,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2026,6,22]],"date-time":"2026-06-22T00:00:00Z","timestamp":1782086400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"\u201cIuliu Ha\u021bieganu\u201d University of Medicine and Pharmacy, Cluj-Napoca","award":["882\/48\/12.01.2022"],"award-info":[{"award-number":["882\/48\/12.01.2022"]}]},{"award":["882\/48\/12.01.2022"],"award-info":[{"award-number":["882\/48\/12.01.2022"]}],"id":[{"id":"https:\/\/ror.org\/051h0cw83","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JCM"],"abstract":"<jats:p>Background\/Objectives: Bitter taste receptors (T2Rs), specifically T2R38, are present in the respiratory epithelium and react with bacterial quorum-sensing molecules to induce an innate immunity response. Although TAS2R38 polymorphisms have been correlated with susceptibility to chronic rhinosinusitis (CRS), they have not yet been explored in odontogenic rhinosinusitis (ORS), a distinct form of CRS with particular microbial and inflammatory features. We aim to establish a proof-of-concept methodology for investigating TAS2R38 genetic variants in ORS using direct maxillary sinus tissue analysis and demonstrate the feasibility of this translational approach. Methods: We conducted a prospective pilot case\u2013control study of 36 ORS patients and 37 controls undergoing septoplasty without sinonasal disease. Maxillary sinus mucosal biopsies were obtained intraoperatively with informed consent. Genomic DNA was extracted using the PureLink Genomic DNA Mini Kit and quantified via NanoDrop spectrophotometry. TAS2R38 haplotypes were determined and classified as taster (PAV\/PAV), non-taster (AVI\/AVI), or intermediate (PAV\/AVI) phenotype. Results: Among fully classifiable canonical TAS2R38 phenotypes (32 ORS patients, 28 controls), distributions were: tasters 12.5% vs. 25.0%, non-tasters 31.3% vs. 25.0%, and intermediate 56.3% vs. 50.0%. AVI\/AVI non-taster status was not significantly associated with ORS susceptibility (OR = 1.36, 95% CI: 0.44\u20134.25; Fisher\u2019s exact p = 0.775). Conclusions: This proof-of-concept study demonstrates that genotyping-grade genomic DNA can be recovered from acutely inflamed maxillary sinus mucosa, validating this substrate for future tissue-based expression, functional, and microbiome analyses not obtainable from peripheral samples; germline genotyping itself does not require sinus tissue. The observed difference in non-taster prevalence (31.3% vs. 25.0%) did not reach statistical significance and is reported descriptively. This directional trend is hypothesis-generating only and, given the limited statistical power, does not constitute evidence for an association. The demonstrated feasibility, together with the established biological rationale, supports an adequately powered confirmatory study and lays the foundation for future investigation of taste receptor genetics in ORS pathogenesis, and potentially personalized therapeutic strategies.<\/jats:p>","DOI":"10.3390\/jcm15124836","type":"journal-article","created":{"date-parts":[[2026,6,24]],"date-time":"2026-06-24T01:03:23Z","timestamp":1782263003000},"page":"4836","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Direct Maxillary Sinus Tissue Analysis for TAS2R38 Polymorphisms: Establishing a Tissue-Based Translational Framework in Odontogenic Rhinosinusitis"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8907-4724","authenticated-orcid":false,"given":"Andra-Lavinia","family":"Gre\u021ba-Oan\u021b\u0103","sequence":"first","affiliation":[{"name":"II<sup>nd<\/sup> Department of Otorhinolaryngology, Faculty of Dental Medicine, \u201cIuliu Ha\u021bieganu\u201d University of Medicine and Pharmacy, 400349 Cluj-Napoca, Romania"},{"name":"Integrated Outpatient Clinic, Cluj-Napoca Clinical Hospital for Infectious Disease, 400003 Cluj-Napoca, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alexandra","family":"Roman","sequence":"additional","affiliation":[{"name":"Department of Periodontology, Faculty of Dental Medicine, \u201cIuliu Ha\u021bieganu\u201d University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5828-1325","authenticated-orcid":false,"given":"Ioana","family":"Berindan-Neagoe","sequence":"additional","affiliation":[{"name":"Genomics Department, MEDFUTURE Institute for Biomedical Research, \u201cIuliu Ha\u021bieganu\u201d University of Medicine and Pharmacy, 400132 Cluj-Napoca, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"\u0218tefan","family":"Strilciuc","sequence":"additional","affiliation":[{"name":"Genomics Department, MEDFUTURE Institute for Biomedical Research, \u201cIuliu Ha\u021bieganu\u201d University of Medicine and Pharmacy, 400132 Cluj-Napoca, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"\u0218tefan Cristian","family":"Vesa","sequence":"additional","affiliation":[{"name":"Department of Pharmacology, Toxicology and Clinical Pharmacology, \u201cIuliu Ha\u021bieganu\u201d University of Medicine and Pharmacy, 400337 Cluj-Napoca, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5806-0220","authenticated-orcid":false,"given":"Laura Ancu\u021ba","family":"Pop","sequence":"additional","affiliation":[{"name":"Genomics Department, MEDFUTURE Institute for Biomedical Research, \u201cIuliu Ha\u021bieganu\u201d University of Medicine and Pharmacy, 400132 Cluj-Napoca, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1498-312X","authenticated-orcid":false,"given":"Veronica Elena","family":"Trombita\u0219","sequence":"additional","affiliation":[{"name":"II<sup>nd<\/sup> Department of Otorhinolaryngology, Faculty of Dental Medicine, \u201cIuliu Ha\u021bieganu\u201d University of Medicine and Pharmacy, 400349 Cluj-Napoca, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Silviu","family":"Albu","sequence":"additional","affiliation":[{"name":"II<sup>nd<\/sup> Department of Otorhinolaryngology, Faculty of Dental Medicine, \u201cIuliu Ha\u021bieganu\u201d University of Medicine and Pharmacy, 400349 Cluj-Napoca, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,6,22]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1","DOI":"10.4193\/Rhin20.401","article-title":"European position paper on rhinosinusitis and nasal polyps 2020","volume":"58","author":"Fokkens","year":"2020","journal-title":"Rhinology"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1235","DOI":"10.1002\/alr.22777","article-title":"Diagnosing odontogenic sinusitis: An international multidisciplinary consensus statement","volume":"11","author":"Craig","year":"2021","journal-title":"Int. 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