Recurrent intraventricular thrombosis in a child with dilated cardiomyopathy and antithrombin deficiency

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Activation of Transient Receptor Potential Vanilloid 3 Regulates Inflammatory Actions of Human Epidermal Keratinocytes

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Knowledge and attitudes of female university students on menstrual cycle and contraception

Socioeconomic changes, as well as the development of new contraceptive modalities may influence women's preferences in the selection of a method of contraception. The aim of this study was to evaluate the knowledge, opinions and attitudes of female university students regarding the menstrual cycle, sexual health and contraception. A questionnaire-based survey was conducted among 2572 female university students in Hungary, Romania and Serbia, between November 2009 and January 2011. A higher proportion of students of health sciences than students of other faculties had appropriate knowledge of the fertile period within a menstrual cycle: 86.0%, 71.5% (p = .02) and 61.1% vs. 71.9% (p < .001), 59.8% and 43.2% (p < .001) in Hungary, Romania and Serbia, respectively. Overall, more than 69% of the female university students believed in the need for monthly menstruation in order to be healthy; however, merely 30 to 40% of them wished to have monthly bleeding. In general, the respondents were aware of the importance of menstruation in relation to sexual health; however, they wished to suppress the menstruation-related symptoms. Differences in the knowledge and attitudes of female university students of the three assessed countries may be explained in part by cultural differences, and in part by the nature of their studies

Microglia modulate blood flow, neurovascular coupling, and hypoperfusion via purinergic actions

Microglia, the main immunocompetent cells of the brain, regulate neuronal function, but their contribution to cerebral blood flow (CBF) regulation has remained elusive. Here, we identify microglia as important modulators of CBF both under physiological conditions and during hypoperfusion. Microglia establish direct, dynamic purinergic contacts with cells in the neurovascular unit that shape CBF in both mice and humans. Surprisingly, the absence of microglia or blockade of microglial P2Y12 receptor (P2Y12R) substantially impairs neurovascular coupling in mice, which is reiterated by chemogenetically induced microglial dysfunction associated with impaired ATP sensitivity. Hypercapnia induces rapid microglial calcium changes, P2Y12R-mediated formation of perivascular phylopodia, and microglial adenosine production, while depletion of microglia reduces brain pH and impairs hypercapnia-induced vasodilation. Microglial actions modulate vascular cyclic GMP levels but are partially independent of nitric oxide. Finally, microglial dysfunction markedly impairs P2Y12R-mediated cerebrovascular adaptation to common carotid artery occlusion resulting in hypoperfusion. Thus, our data reveal a previously unrecognized role for microglia in CBF regulation, with broad implications for common neurological diseases