Are premenstrual symptoms associated with health anxiety in nursing graduates?

Objective: This study examined retrospectively the relationship between premenstrual symptoms and health anxiety. Methods: Premenstrual symptoms of nursing school graduates were assessed in 1985 and again in 1991 using the Premenstrual Assessment Form (PAF). A total of 571 women completed the survey in 1991, along with items relating to their physical and mental health. The latter included depression, anxiety, and panic attacks. Health anxiety was also assessed using the Whiteley Index (WI). After women who were amenorrheic for any reason were excluded, a final sample of 410 women aged 25 to 52 years was obtained. Factor analyses yielded 57 items that were useful for calculating a total PAF score. A stepwise multivariate linear regression model was used to find the association of PAF scores with various participant characteristics. Results: Thirty-kone of the 410 (7.6%) women had WI scores of ≥5 and were considered to have significant health-related anxiety. The PAF score had statistically significant associations with health anxiety, as well as depression and anxiety. Conclusions: Our results suggest that the premenstrual symptoms often coexist with health anxiety as well as other psychological symptoms. Clinicians should be alert to the fact that PMS may be associated with treatable psychiatric conditions.

Does closure of acid-sensing ion channels reduce ischemia/reperfusion injury in the rat brain?

Acidosis is a common characteristic of brain damage. Because studies have shown that permeable Ca2＋-acid-sensing ion channels can mediate the toxic effects of calcium ions, they have become new targets against pain and various intracranial diseases. However, the mechanism associated with expression of these channels remains unclear. This study sought to observe the expression characteristics of permeable Ca2＋-acid-sensing ion channels during different reperfusion inflows in rats after cerebral ischemia. The rat models were randomly divided into three groups： adaptive ischemia/reperfusion group, one-time ischemia/reperfusion group, and severe cerebral ischemic injury group. Western blot assays and immunofluorescence staining results exhibited that when compared with the one-time ischemia/reperfusion group, acid-sensing ion channel 3 and Bcl-x/I expression decreased in the adaptive ischemia/reperfusion group. Calmodulin expression was lowest in the adaptive ischemia/reperfusion group. Following adaptive reperfusion, common carotid artery flow was close to normal, and the pH value improved. Results verified that adaptive reperfusion following cerebral ischemia can suppress acid-sensing ion channel 3 expression, significantly reduce Ca2＋ influx, inhibit calcium overload, and diminish Ca2＋ toxicity. The effects of adaptive ischemia/reperfusion on suppressing cell apoptosis and relieving brain damage were better than that of one-time ischemia/reperfusion.