Are you what your friends eat : systematic review of social network analyses of young people 's eating behaviours and bodyweight?
School friendships may be critical in shaping young people's eating behaviours and bodyweight and/or vice versa, and suggests the potential of social-network-based health promotion interventions in schools. Further longitudinal research is needed to examine the processes via which this clustering occurs, how it varies according to school context, and the effects of non-school networks.
Posthypoxic reoxygenation stimulates repetitive [Ca(2+)](i) oscillations that are dependent on Ca(2+) release from an intracellular pool and require extracellular Ca(2+) to be maintained. These oscillations may be initiated by NAD(P)H oxidase-derived hydrogen peroxide and may play a role in signal transduction during ischemia/reperfusion in vivo.