Metabolic syndrome: pathogenesis, medical care and dental implications

BACKGROUND: The dental literature contains little information about metabolic syndrome (MetS) and its dental implications. TYPES OF STUDIES REVIEWED: The authors conducted a MEDLINE search for the period 2000 through 2005, using the term "metabolic syndrome" to define its pathophysiology, medical treatment and dental implications. RESULTS: MetS is the co-occurrence of abdominal obesity, hyper-triglyceridemia, reduced high-density lipoprotein cholesterol levels, hypertension and impaired fasting glucose, which results from consumption of a high-calorie diet and decreased levels of physical activity superimposed on the appropriate genetic setting. Components of MetS synergistically promote the development of atherosclerosis, resulting in myocardial infarction and stroke. CLINICAL IMPLICATIONS: Deteriorating oral health status is associated with worsening of the atherogenic profile. Tooth loss often results in chewing difficulties because of inadequate occlusive surfaces and may lead to alterations in food selection and dietary quality. This, in turn, adversely affects body composition and nutritional status, both of which are related to vascular health. Dentists should develop treatment plans that preserve and restore the dentition, thus ensuring maximum masticatory efficiency and affording patients the optimum opportunity to consume food that will not foster atherogenesis.     

黄芪多糖协同抗癌药物对肿瘤细胞的杀伤作用

目的 探讨黄芪多糖对S-180肉瘤细胞周期的影响及与5-氟尿嘧啶使用，对S-180肉瘤细胞的杀伤作用。方法 通过四甲基偶氮唑蓝（MTT）实验检测细胞的增殖抑制率，以观察黄芪多糖对S-180肉瘤细胞的增殖抑制作用；应用流式细胞仪检测细胞周期有改变及凋亡率。结果 黄芪多糖可抑制S-180肉瘤细胞的生长、增殖：与5-氟尿嘧啶联合应用对S-180肉瘤细胞杀伤作用强于2种药物单独使用。黄芪多糖处理后的S-180肉瘤细胞出现低于G，期DNA含量的亚二倍体凋亡峰，将细胞周期阻滞于G1期。结论 黄芪多糖对S-180肉瘤细胞有杀伤作用；黄芪多糖与5-氟尿嘧啶联合使用具有协同抗肿瘤作用。