Expression of tumor necrosis factor-α and nuclear factor-kappaB/RelA and the pathogenesis of psoriasis.
Indian J Pathol Microbiol
;
2014 Apr-Jun 57 (2): 205-208
Article
in English
| IMSEAR
| ID: sea-156016
ABSTRACT
Context Tumor necrosis factor-α (TNF-α) is an important mediator in the pathogenesis of psoriasis. Nuclear factor-kappaB (NF-κB) is a transcription factor that regulates the activity of the proinfl ammatory genes. Psoriasis is an infl ammatory disease and the role of TNF-α and NF-κB, should be considerable. Aims:
We studied the role of TNF-α and NF-κB in psoriasis. Materials andMethods:
A total of 61 cases of psoriatic skin biopsies were studies and the grade of TNF-α and NF-κB, staining was correlated with the histopathological indices of severity. Statistical Analysis Used Pearson’s correlation coeffi cient and Chi-square test. Statistical Package for Social Sciences version 13 was used.Results:
The TNF-α immunostain in the cytoplasm of the epidermal cells and basal cells showed a strong inverse correlation with the grade of epidermal hyperplasia (P –0.019 and P –0.009, respectively). The epidermal cytoplasmic positivity and lymphocyte positivity for TNF-α did not correlate with the grade of NF-κB immunostaining in the epidermal cell nuclei, basal cells or lymphocytes. The basal cell cytoplasmic positivity for TNF-α correlated with the grade of NF-κB immunostaining in the nucleus of basal cells at a P – 0.005. There was a strong correlation between the epidermal cytoplasmic TNF-α immunostaining with the lymphocyte immunostaining (P –0.08); however, there was no correlation between the TNF-α expression in the other two locations.Conclusions:
The study outlines the relationship between NF-κB and TNF-α and their combined role in the development of the characteristic histopathological changes in psoriasis. We hypothesize that NF-κB is involved in stimulating the release of TNF-α which would account for the characteristic histopathological changes of psoriasis. However, it is likely that NF-κB can act independently of TNF-α also in the pathogenesis of psoriasis.
Full text:
Available
Index:
IMSEAR (South-East Asia)
Type of study:
Etiology study
Language:
English
Journal:
Indian J Pathol Microbiol
Year:
2014
Type:
Article
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