ABSTRACT
Objective To learn the epidemic characteristics of metabolic syndrome (MS)among rural adults in Changshan County and to provide evidence for developing control and prevention measures.Methods A total of 1 21 2 residents aged over 1 8 years old in four towns were selected by multi -stage stratified cluster random sampling method and an investigation including questionnaire,physical examination and blood biochemical examination was conducted.Results The crude prevalence rate of MS among rural adults in Changshan County was 30.61 % and the standardized prevalence rate was 26.32%.The MS prevalence rate was significantly higher in females than in males (P <0.01 ).The major risk factors for MS were female gender (OR =1 .98),elderly age (OR =1 .02)and family history of hypertension (OR =1 .60). Conclusion The prevalence rate of MS is considerably high in rural areas of Changshan County and effective measures should be taken at early stage.
ABSTRACT
Hyperthermia is one of the most effective adjuvant treatments for various cancers with few side effects. However, the underlying molecular mechanisms still are not known. N-myc downstream-regulated gene 2 (NDRG2), a tumor suppressor, has been shown to be involved in diverse cellular stresses including hypoxia, lipotoxicity, etc. In addition, Ndrg2 has been reported to be related to progression of gastric cancer. In the current study, our data showed that the apoptosis rate of MKN28 cells increased relatively rapidly to 13.4% by 24 h after treatment with hyperthermia (42°C for 1 h) compared to 5.1% in control cells (P < 0.05). Nevertheless, there was no obvious change in the expression level of total Ndrg2 during this process. Further investigation demonstrated that the relative phosphorylation levels of Ndrg2 at Ser332, Thr348 increased up to 3.2- and 1.9-fold (hyperthermia group vs control group) at 3 h in MKN28 cells, respectively (P < 0.05). We also found that heat treatment significantly increased AKT phosphorylation. AKT inhibitor VIII (10 µM) decreased the phosphorylation level of Ndrg2 induced by hyperthermia. Accordingly, the apoptosis rate rose significantly in MKN28 cells (16.4%) treated with a combination of AKT inhibitor VIII and hyperthermia compared to that (6.8%) of cells treated with hyperthermia alone (P < 0.05). Taken together, these data demonstrated that Ndrg2 phosphorylation could be induced by hyperthermia in an AKT-dependent manner in gastric cancer cells. Furthermore, AKT inhibitor VIII suppressed Ndrg2 phosphorylation and rendered gastric cancer cells susceptible to apoptosis induced by hyperthermia.