AIM: To investigate the effects of traditional Chine semedicinal enema (TCME) on inflammatory and immune response of colonic mucosa of rats with ulcerative colitis(UC), and to observe the pathogenic mechanism.METHODS:...AIM: To investigate the effects of traditional Chine semedicinal enema (TCME) on inflammatory and immune response of colonic mucosa of rats with ulcerative colitis(UC), and to observe the pathogenic mechanism.METHODS: Thirty UC rats, induced by intestinal enema together with 2.4-dinitrochlorobenzene (DNCB) and acetic acid, were randomly divided into 3 groups, i.e., GⅠ, GⅡ and GⅢ. Groups GⅠ and GⅡ were administered with TCME and salazosulfapyridine enema (SASPE), respectively. Group GⅢ was clystered with only normal saline (NSE), served as control. Group GIV was taken from normal rats as reference,once daily, from the 7th day after the establishment of UC for total 28 d. Interleukin-6 (IL-6) in the colonic mucosa was assayed by ^3H-TdR incorporation assay. Colonic mucosal lymphocyte subpopulation adhesive molecules, CD4^+CD11a^+,CD4^+CD18^+, CDs^+CD11a^+, CDs^+CD18^+ (LSAM), tumor necrosis factor (TNF)-α, and interferon-γ (IFN-γ), were detected by enzyme linked immunosorbent assay (ELISA). Moreover, the expression of TNF-α mRNA and IFN-γ mRNA in colonicmuc osa were detected by polymerase chain reaction (RT-PCR).RESULTS: Before therapies, in model groups, GⅠ, GⅡ and GⅢ,levels of IL-6, TNF-α, IFN-γ, CDs^+CD11a^+ and CD8^+CD18^+ were significantly different (38.29+2.61 U/mL, 16.54+1.23 ng/L,8.61+0.89 ng/L, 13.51+2.31% and 12.22+1.13% ,respectively) compared to those in GIV group (31.56+2.47 U/mL, 12.81+1.38 ng/L, 5.28+0.56 ng/L, 16.68+1.41% and 16.79+1.11%, respectively). After therapeutic enemas,in GI group, the contents of IL-6 (32.48±2.53 U/m), TNF-α(13.42±1.57 ng/L) and IFN-γ (5.87+0.84 ng/L) were reduced; then, the contents of CD8^+CD11a^+ (16.01+1.05 %)and CD8^+CD18^+ (16.28±0.19%) were raised. There was no significant difference between groups GⅠ and GIV, but the difference between groups GⅠ and GⅡ was quite obvious (P<0.05). The expressions of TNF-α mRNA and IFN-γ mRNAin group GⅢ were much higher than those of group GIV,but those in group GI were significantly suppresse展开更多
基金Supported by the Science-and Technology Development Fund of Shanghai,No.98DB14586
文摘AIM: To investigate the effects of traditional Chine semedicinal enema (TCME) on inflammatory and immune response of colonic mucosa of rats with ulcerative colitis(UC), and to observe the pathogenic mechanism.METHODS: Thirty UC rats, induced by intestinal enema together with 2.4-dinitrochlorobenzene (DNCB) and acetic acid, were randomly divided into 3 groups, i.e., GⅠ, GⅡ and GⅢ. Groups GⅠ and GⅡ were administered with TCME and salazosulfapyridine enema (SASPE), respectively. Group GⅢ was clystered with only normal saline (NSE), served as control. Group GIV was taken from normal rats as reference,once daily, from the 7th day after the establishment of UC for total 28 d. Interleukin-6 (IL-6) in the colonic mucosa was assayed by ^3H-TdR incorporation assay. Colonic mucosal lymphocyte subpopulation adhesive molecules, CD4^+CD11a^+,CD4^+CD18^+, CDs^+CD11a^+, CDs^+CD18^+ (LSAM), tumor necrosis factor (TNF)-α, and interferon-γ (IFN-γ), were detected by enzyme linked immunosorbent assay (ELISA). Moreover, the expression of TNF-α mRNA and IFN-γ mRNA in colonicmuc osa were detected by polymerase chain reaction (RT-PCR).RESULTS: Before therapies, in model groups, GⅠ, GⅡ and GⅢ,levels of IL-6, TNF-α, IFN-γ, CDs^+CD11a^+ and CD8^+CD18^+ were significantly different (38.29+2.61 U/mL, 16.54+1.23 ng/L,8.61+0.89 ng/L, 13.51+2.31% and 12.22+1.13% ,respectively) compared to those in GIV group (31.56+2.47 U/mL, 12.81+1.38 ng/L, 5.28+0.56 ng/L, 16.68+1.41% and 16.79+1.11%, respectively). After therapeutic enemas,in GI group, the contents of IL-6 (32.48±2.53 U/m), TNF-α(13.42±1.57 ng/L) and IFN-γ (5.87+0.84 ng/L) were reduced; then, the contents of CD8^+CD11a^+ (16.01+1.05 %)and CD8^+CD18^+ (16.28±0.19%) were raised. There was no significant difference between groups GⅠ and GIV, but the difference between groups GⅠ and GⅡ was quite obvious (P<0.05). The expressions of TNF-α mRNA and IFN-γ mRNAin group GⅢ were much higher than those of group GIV,but those in group GI were significantly suppresse
