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Wei-Wei-Kang-Granule(WWKG) is a traditional Chinese medicine (TCM) preparation for the treatment of chronic atrophic gastritis (CAG). We examined the pathologic change and the effects of Wei-Wei-Kang-Granule (WWKG) on the expression of EGFR (epiderminal growth factor receptors) and NF-kB (nuclear transcription factor KappaB) in rats with chronic atrophic gastritis (CAG), and evaluated the possible mechanisms. Ninety rats were randomly divided into control group and four experimental groups. CAG rat models were induced by repeated stimulating experiments in the experimental groups. After modeled rats were intragastrically injected (i.g.) with WWKG at 6000mg/kg (large dose WWKG group), WWKG at 3000mg/kg (small dose WWKG group), San-Jiu-Wei-Tai-Granule(SJWTG) at 1600mg/kg(SJWTG group), and normal saline(0.9%)at 20ml/kg (model group and control group), respectively, once a day for 30 days. After 30 days, all rats were sacrificed and samples were taken from the sinus ventriculi and body of stomach. The gastric specimens were prepared for microscopic view with hematoxylin and eosin (H-E). The immunohistochemistry method was used to observe the expression of protein of EGFR and NF-kB in gastric tissue. The data were analyzed in pre-and post-treatment by computer image automatic analysis system. Immunohistochemistry detection showed that the average optical density of EGFR and NF-kB in antrum was lower in large and small dose WWKG groups than the model group (P<0.01). CAG in rats was related with the damage of barrier in gastric mucosa and the misbalance of cell proliferation and apoptosis. One of the mechanisms is perhaps to reduce the expressing of EGFR and NF-Kb in gastric mucosa.

Effects of Traditional Chinese Medicine Wei-Wei-Kang-Granule on the Expression of Egfr and Nf-Kb in Chronic Atrophic Gastritis Rats