{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,11]],"date-time":"2026-02-11T21:09:18Z","timestamp":1770844158510,"version":"3.50.1"},"reference-count":28,"publisher":"Cambridge University Press (CUP)","issue":"2","license":[{"start":{"date-parts":[[2010,10,19]],"date-time":"2010-10-19T00:00:00Z","timestamp":1287446400000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Laryngol. Otol."],"published-print":{"date-parts":[[2011,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec id=\"S002221511000201X_sec1\"><jats:title>Aim:<\/jats:title><jats:p>To investigate levels of matrix metalloproteinases 2 and 9, and of their tissue inhibitor (i.e. tissue inhibitor matrix metalloproteinase 1), in the serum of patients with tympanosclerosis.<\/jats:p><\/jats:sec><jats:sec id=\"S002221511000201X_sec2\"><jats:title>Materials and method:<\/jats:title><jats:p>We included 40 patients (age range 13\u201363 years) who had undergone surgery in the ENT department of \u0130zmir Atat\u00fcrk Training and Research Hospital between 2002 and 2007. Twenty had uncomplicated chronic otitis media and 20 had tympanosclerosis. We also included as the control group 20 individuals with no history of previous otic complaints or systemic or infectious disease. Serum levels of serum matrix metalloproteinases 2 and 9 and of tissue inhibitor matrix metalloproteinase 1 were measured in all subjects and compared.<\/jats:p><\/jats:sec><jats:sec id=\"S002221511000201X_sec3\"><jats:title>Result:<\/jats:title><jats:p>Significantly higher levels of serum matrix metalloproteinases 2 and 9 were found in the tympanosclerosis group, compared with the chronic otitis media and control groups. There was no statistically significant difference in tissue inhibitor matrix metalloproteinase 1 level between the three groups.<\/jats:p><\/jats:sec><jats:sec id=\"S002221511000201X_sec4\"><jats:title>Conclusion:<\/jats:title><jats:p>Tympanosclerosis surgery has poor success rates, since the pathological process is still active. We suggest that high levels of matrix metalloproteinases may play a role in the continuation of the disease process.<\/jats:p><\/jats:sec>","DOI":"10.1017\/s002221511000201x","type":"journal-article","created":{"date-parts":[[2010,10,19]],"date-time":"2010-10-19T09:05:45Z","timestamp":1287479145000},"page":"142-146","source":"Crossref","is-referenced-by-count":4,"title":["Serum matrix metalloproteinases and tympanosclerosis"],"prefix":"10.1017","volume":"125","author":[{"given":"H","family":"Aslan","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M 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