Correlation between Serum Levels of Melatonin TNF-A and EDSS Scores in Multiple Sclerosis Patients / 昆明医科大学学报

Objective To study the serum levels of melatonin,tumor necrosis factor alpha (TNF-α) and interferon gamma (IFN-γ) in multiple sclerosis (MS) patients and the correlation with disability.Methods Forty patients with multiple sclerosis were collected as MS group and 30 healthy participants were collected as control group.Serum levels of melatonin and cytokines,including IFN-γ and TNF-,were detected in all participants by the enzyme-linked immunosorbent assay (ELISA) method;disability status of patients with MS was evaluated by EDSS scale.The relevant analysis between serum melatonin,TNF-α,IFN-γ levels and EDSS score in patients with MS was conducted.Results The concentration of serum melatonin in MS group was significantly lower than control group (P＜0.01).TNF-α levels were higher than control group (P＜0.05) and the difference was statistically significant between MS patients and control group.Among MS group and control group,no significant correlation with the serum levels of IFN-γ was seen.The serum melatonin level was inversely correlated with EDSS score in MS patients (r =-0.76,P＜0.01),and positively correlated with TNF-α (r =0.83,P＜0.01) and as compared to IFN-γ,no significant correlation was found (r =0.17,P＞0.05).Conclusion The decrease of melatonin and increase of TNF-α can be a factor in the inflammatory reaction in patients with MS,and is closely related with dysfunction occurring in multiple sclerosis.Serum melatonin and TNF-α can be used as laboratory indicators to monitor clinical curative effect and evaluate prognosis of MS.

Effects of astilbin on the expression of TNF alpha and IL-10 in liver warm ischemia-reperfusion injury / 中华肝脏病杂志

<p><b>OBJECTIVES</b>To investigate the effects of astilbin on the expressions of TNF alpha and IL-10 during liver warm ischemia-reperfusion injury.</p><p><b>METHODS</b>C57BL/ 6 mice were randomly divided into 4 groups (n = 8): sham-operated group (Sham), model control group(I/R), low dosage of astilbin treatment group (10 mg/kg) and high dosage of astilbin (40 mg/kg) treatment group. The treatment group mice were intraperitoneally injected with 10 or 40 mg/kg astilbin 24 hours and one hour before Ischemia, the hepatic ischemia-reperfusion model were thus established. After jn90 of min ischemia and 6 h reperfusion of the partial hepatic lobe, the expressions of TNF alpha and IL-10 in liver tissues collected from the experimental groups were detected by Western blot and semiquantitative RT-PCR.</p><p><b>RESULTS</b>The expression of TNF alpha protein in liver tissues gradually decreased in treatment groups (low and high dosages of astilbin treatment groups) as compared to the I/R model control group. Similar results were observed in the mRNA expressions of these genes as determined by semiquantitative RT-PCR (P less than 0.05 for low dosage group; P less than 0.01 for high dosage group). Compared with the I/R model control group, the expression of IL-10 was increased in both treatment groups (low dosage group P less than 0.05; large dosage group P less than 0.01).</p><p><b>CONCLUSION</b>Treatment with astilbin decreases TNF alpha expression but induces IL-10 expression in liver during warm ischemia-reperfusion injury.</p>

The proposed principles by GHTF of the classification and assessment for in vitro diagnostic (IVD) medical devices / 中国医疗器械杂志

The IVD (In Vitro Diagnostic)Medical Devices are various and develop rapidly. This paper introduces briefly the principles of classification and conformity assessment for IVD medical that proposed by GHTF (Global Harmonization Task Force).