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- W2010437963 abstract "Background: Nifedipine and cyclosporin A (CsA) induce gingival overgrowth. Both drugs have immunomodulating effects. It has been suggested that altered immune response is associated with drug‐induced gingival overgrowth. In this study, we evaluated whether there were differences in macrophages and lymphocyte subpopulations in human nifedipine‐ and CsA‐associated gingival overgrowth as compared with those in normal gingiva. Methods: Biopsy samples of overgrown gingiva were obtained from 9 nifedipine‐treated cardiac outpatients, 13 CsA‐treated renal transplant recipients including 9 patients who were also receiving nifedipine, and 30 healthy control individuals undergoing dental treatment. Serial 5 µm thick cryostat sections were stained with mAbs for CD20 (B‐pan), CD68 (macrophages), CD4 (T‐helper/inducer), and CD8 (T‐cytotoxic/suppressor) using an avidin‐biotin‐horseradish peroxidase complex method. Numbers of mAb‐labeled and all nucleated cells were determined in 3 areas: the connective tissue beneath the sulcular epithelium, the middle connective tissue, and the connective tissue beneath the oral epithelium. Distributions of each type of cell were expressed as percentages of mAb‐labeled cells in relation to total number of nucleated cells in a counting zone. Significances of differences between groups were tested by means of the Kruskal‐Wallis test, and between pairs of results by means of the Mann‐Whitney U‐test. Results: The proportion of CD8‐labeled cells was significantly higher in connective tissue beneath the sulcular epithelium in the nifedipine group than in the controls ( P = 0.014). In both medicated groups, the proportions of CD68‐labeled cells were higher in all counting zones than in the controls, but statistically significantly only in the nifedipine group in the connective tissue beneath the oral epithelium ( P = 0.008). No intergroup differences were found with respect to CD4‐ and CD20‐labeled cells. The CD4/CD8 ratio was significantly lower in connective tissue beneath the sulcular epithelium in the nifedipine group than in the controls ( P = 0.013). Conclusion: The results support the idea that immune response may be altered in drug‐induced gingival overgrowth. J Periodontol 2001;72: 160‐166." @default.
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- W2010437963 date "2001-02-01" @default.
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- W2010437963 title "Macrophages and Lymphocyte Subpopulations in Nifedipine‐ and Cyclosporin A‐Associated Human Gingival Overgrowth" @default.
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- W2010437963 doi "https://doi.org/10.1902/jop.2001.72.2.160" @default.
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