Immunohistological analysis of T cell functional subsets in chronic inflammatory periodontal disease

Immunohistological analysis of T cell functional subsets in chronic inflammatory periodontal disease
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慢性炎症性牙周病T细胞功能亚群的免疫组织学分析

DOI:
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发表时间:
1995
影响因子:
4.6
通讯作者:
K. Hara
K. Hara
中科院分区:
医学3区
文献类型:
--
作者:
K. Yamazaki;T. Nakajima;K. Hara

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采用免疫组织化学方法检测牙周炎和牙龈炎患者组织中产生IL-2、IFN-γ、IL-4和IL-6的T细胞,以阐明T细胞功能亚群与疾病实体的关系。使用碱性磷酸酶抗碱性磷酸酶技术,计算切片结缔组织中选择的沟1/3、中1/3和口腔1/3区域中各细胞因子产生T细胞的相对比例。在连续切片上测定CD 19:CD 3和CD 4:CD 8比率。与牙龈炎组织相比,受牙周炎影响的样本中细胞因子产生细胞的比例在沟1/3处总体较高(P < 0·02)。中间1/3的细胞因子产生细胞的百分比较高,但IL-6产生细胞除外。口腔1/3中细胞因子产生细胞的频率没有差异。IL-4是牙周炎影响组织中的主要细胞因子,在龈沟1/3中检测到的比例最高。CD 19:CD 3比值在牙周炎组织中较高,无论位置如何,表明牙周炎病变中B细胞占优势。此外,IL-4产生细胞的比例与CD 19:CD 3比值之间存在显著正相关。牙周炎和牙龈炎患者的CD 4:CD 8比值均大于2·0。这些结果表明,牙周炎和牙龈炎的免疫调节都是T细胞依赖性的,但在牙周炎2型中,辅助T细胞占主导地位,从而控制B细胞活化。
IL‐2, interferon‐gamma (IFN‐γ), IL‐4 and IL‐6 producing T cells in periodontitis and gingivitis‐affected human tissues were investigated by immunohistochemistry to clarify the relationship between T cell functional subsets and disease entity. Using alkaline‐phosphatase anti‐alkaline‐phosphatase technique, the relative proportions of each cytokine‐producing T cell were calculated in the crevicular 1/3, middle 1/3 and oral 1/3 areas selected in the connective tissue of sections. CD19:CD3 and CD4:CD8 ratios were determined on the serial sections. Compared with gingivitis tissues, the proportion of cytokine‐producing cells in periodontitis‐affected samples was higher overall in the crevicular 1/3 (P < 0·02). The middle 1/3 exhibited a higher percentage of cytokine‐producing cells, except for IL‐6‐producing cells. Frequencies of cytokine‐producing cells in the oral 1/3 did not differ. IL‐4 was the prominent cytokine in periodontitis‐affected tissues, with the highest proportion detected in the crevicular 1/3. The CD19:CD3 ratio was higher in periodontitis tissues irrespective of the location, indicating a B cell dominance in periodontitis lesions. Furthermore, a significant positive correlation between the proportion of IL‐4‐producing cells and the CD19:CD3 ratio was noted. The CD4:CD8 ratio consistently exceeded 2·0 in both periodontitis and gingivitis. These results suggest that immunoregulation of both periodontitis and gingivitis are T cell‐dependent, but in periodontitis type 2 helper T cells predominate and thereby control B cell activation.
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