Association between the G252A Tumor Necrosis Factor-beta Gene Polymorphism and Medication-Overuse Headache

BACKGROUND AND PURPOSE: Migraine patients are particularly prone to the complication of medication-overuse headache (MOH). Although it has been shown that A allele carriers for the tumor necrosis factor (TNF)-beta gene G252A polymorphism are at high risk of the development of migraine without aura, the relationship between the TNF-beta gene G252A polymorphism and MOH is unknown. We investigated whether the TNF-beta gene G252A polymorphism is involved in the aggravation of migraine by overuse of medications. METHODS: Forty-seven migraine patients (6 males and 41 females; age 36.4+/-10.3 years, mean+/-SD) and 22 MOH patients (1 male and 21 females; age 39.6+/-9.9 years) who had migraine were included in this study. The genotype for the TNF-beta gene G252A polymorphism was determined by polymerase-chain-reaction restriction-fragment-length polymorphism analysis. RESULTS: The distribution of TNF-beta gene G252A genotype frequency differed significantly between migraine and MOH patients (p=0.013). The G/G genotype was carried by 23% of the migraine patients but it was absent in MOH patients. CONCLUSIONS: G/G genotype carriers appear to be less susceptible to the aggravation of migraine by overuse of medications. The G252A TNF-beta gene polymorphism may be one of the factors contributing to the complications of MOH in patients with migraine.

Association of TNF promoter polymorphisms with type 1 diabetes in the South Croatian population

Type 1 diabetes mellitus (TIDM) is an autoimmune disease characterized by the destruction of pancreatic p cells. Tumor necrosis factor (TNF) is a pleotropic cytokine with potent immunomodulatory and inflammatory activity. Association studies of TNF polymorphisms and type 1 diabetes (TIDM) frequently demonstrated TNF involvement with TIDM. Although TNF may play an important role in the pathogenesis of TIDM, the genetic association of TNF región with the disease has not been conclusive because of the strong linkage disequilibrium with HLA genes. In this study, we examined two TNF promoter variants (rs 1800629 at position -308, and rs361525 at position -238) for TIDM association in 233 patients and 144 controls from the population of South Croatia. A higher frequency of TNF -308 A alíele and also, a more frequent specific -308A -238G haplotype in TIDM patients were observed with a limited significance. However, we did not find strong evidence of association of TNF promoter polymorphisms with TIDM. In order to elucidate the trae contribution of TNF to TIDM susceptibility in our population, more comprehensive studies with HLA adjustment in a larger sample are required.

The effect of delayed treatment with anti-TNF monoclonal antibody on systemic hemodynamics and multiple organ dysfunction in rats following prolonged hemorrhagic shock an resuscitation / 中华麻醉学杂志

To evaluate the effect of delayed treatment with monoclonal antibody to tumor necrosis factor-alpha (TNF-? MAb) on systemic hemodynamics and multiple organ dysfunction following prolonged hemorrhagic shock and resuscitation. Method: Adult male Sprague-Dawley rats were subjected to prolonged hemorrhagic shock (MAP of 4.00-4.66 kPa for 180 rain)followed by resuscitation over 50 min. The animals were treated intravenously with either TNF-? MAb (20.0 mg/kg) or the control protein(albumin,20.0 mg/kg)15 rain after the end of resuscitation(65 min after shock). Result: Compared to the albumin controls, delayed treatment with TNF-? MAh significantly reduced the total peripheral resistance index (P

Preliminary Study on Transduction of Tumor-infiltrating Lymphocyte with Tumor Necrosis Factor Gene and Its Clinical Trial / 中国肿瘤生物治疗杂志

We selected defective retrovirus LXSN approved by the recombinant DNA Advisory Comittee, NIH, USA as a vector to study the transduction of human TIL with TNF gene, on the basis of which, we engaged in the clinical application. The results showed that the logarithmic growth phase was the optimal transducing time when the TIL were isolated and cultured from 9 to 25 days. It also showed that the transduction efficiency was correlated to the MOI value, the more MOI value, the more TIL being transduced. Successful gene inserted and expressing were confirmed by the polymerase chain reaction and the L929 cell test. The clinical trial of treatment for metastastic hepatic cancer suggested that the better therapeutic effectiveness and less side effect depend on the specificity of the TIL, the proper infusion pathway and the dose of the transduced TIL.

The role of tumor necrosis factor alpha in the pathogenesis of immunologically mediated aplastic anemia in mice / 中国病理生理杂志

The plasma levels of TNF alpha was determined dynamically using TNF ELISA; and TNF mRNA in spleen cells from varied groups was determined using Northern Blot. The results showed that: (1) Elevated levels of TNF-alpha in plasma from mice of immunologically- mediated aplastic anemia. (2) Induced production of TNF from spleen cells were much lower in exprimental groups than that in normal control group. (3) Decreased TNF-? gene expression present in spleen cell in AA group compared with normal control group.