Objective To study the change of content of platelet calcium in patients with acute cerebral infarction.Explore the relationship between anterior and posterior circulation cereball infarction and the change of content of platelet calcium.Methods The content of platelet calcium in venous blood were detected by flow cytometry in 87 patients with acute cerebral infarction(40 cases of anterior circulation,47 cases of posterior)and 20 health persons(normal control group).The content of platelet calcium in venous blood of every group were compared.Results In the group of acute cerebral infarction,the content of platelet calcium was significantly higher than that in the control group(P

Like functions of other organisms, most of the physiological and behavioral functions of human are characterized by day-night rhythms. The rhythms which exhibit approximately 24-hour periodicity are called as circadian rhythms. This review is to summarize the progress of studies on relation of circadian rhythum disruption and cancer. The research results from animal experiments and population-based epidemiological studies have showed that cancer is closly related to circadian rhythm. Although numrous studies have demonstrated the close relation between circadian rhythm disruption and cancer, the mechanism is not yet clear. The current studies attributed decreased level of melatonin secretion and disruption of clock genes expression to the mechanism of carcinogenesis of circadian rhythm disruption.
Animals ; Chronobiology Disorders ; physiopathology ; Humans ; Neoplasms ; epidemiology ; physiopathology ; Risk Factors ; United States ; epidemiology