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:: دوره 3، شماره 3 - ( مجموعه مقالات بیماری های دهان 1390 ) ::
جلد 3 شماره 3 صفحات 0-0 برگشت به فهرست نسخه ها
Reduced immune responses to purified protein derivative and Candida albicans in oral lichen planus
چکیده:   (1815 مشاهده)

 Background

  Impairment of cellular immunity is reported in lichen planus, an autoimmune disease affecting mucosae and skin. Our aim was to investigate immune responses directed against a set of microbial antigens in patients with oral lichen planus and in matched controls.

 Methods

  Venous blood was obtained, and the mononuclear cells were enriched by density gradient centrifugation. The proliferation of peripheral blood mononuclear cells was assessed, following stimulation with purified protein derivative (PPD), Candida albicans, phytohemagglutinin or when cells were left unstimulated, after three or six days of cell culture. The production of interleukin-1ß (IL-1ß), IL-2, IL-4, IL-5, IL-6, IL-10, IL-12, IL-13, IL-17, interferon-γ (IFN-γ), tumour necrosis factor-α (TNF-α), G-CSF, GM-CSF, MCP-1, MIP-ß was assessed in supernatants using the Bio-plex® assay and was complemented with ELISA for selected cytokines.

 Results

  Patients with oral lichen planus demonstrated reduced proliferative responses against PPD (P < 0.05) and C. albicans (P < 0.05). The majority of investigated cytokines, including the pro-inflammatory, IFN-γ and TNF-α were expressed at reduced levels in PPD-stimulated supernatants from patients with oral lichen planus.

 Conclusions

 Collectively, the findings suggested that memory lymphocytes from patients with oral lichen planus (OLP) may have an impaired functional ability to react against certain recall antigens, as part of a generalized response, which may reflect immune regulatory processes. Further studies are needed to clarify the mechanisms of down-regulation in OLP pathogenesis and progression.


 Source: Journal of Oral Pathology & Medicine

 Full Text

واژه‌های کلیدی: Candida albicans ;oral lichen planus;proliferation;purified protein derivative;T lymphocytes
     
نوع مطالعه: پژوهشي | موضوع مقاله: بیماری های دهان
دریافت: 1392/8/9 | انتشار: 1390/10/25
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Reduced immune responses to purified protein derivative and Candida albicans in oral lichen planus. 1. 1390; 3 (3)

URL: http://idai.ir/article-1-2331-fa.html



بازنشر اطلاعات
Creative Commons License این مقاله تحت شرایط Creative Commons Attribution-NonCommercial 4.0 International License قابل بازنشر است.
دوره 3، شماره 3 - ( مجموعه مقالات بیماری های دهان 1390 ) برگشت به فهرست نسخه ها
جامعه اسلامی دندانپزشکان Islamic Dental Association of IRAN

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