BACKGROUND In recent years, the notion that consolidated memories become transiently unstable after retrieval and require reconsolidation to persist for later use has received strong experimental support. To date, the majority of studies on reconsolidation have focused on memories of negative emotions, while the dynamics of positive memories have been less well studied. Social play, the most ch...

1. Noradrenaline stimulates gluconeogenesis through an (a-adrenoceptor in renal cortical tubule fragments from fed rats incubated with 5 mM-lactate. 2. The selective a1-adrenoreceptor agonist methoxamine stimulated gluconeogenesis, but the selective a2-adrenoceptor agonist clonidine was ineffective. 3. The selective a1-adrenoceptor antagonist thymoxamine blocked the stimulatory effects on gluco...

1. Average supine circulating total catecholamine concentrations were found to be higher than the normal range in about 50% of patients with labile hypertension and in about 30% of patients with sustained essential hypertension. 2. These higher resting concentrations were mainly due to an increase in adrenaline in labile hypertension and to an increase in noradrenaline in sustained hypertension...

We studied the effect of cholecystokinin (CCK-8) and yohimbine-alpha-2-adrenoreceptor antagonist administered locally into lateral reticular formation (LRF) on the bioelectrical response to the pain stimulation. The experiments were carried out on 8 conscious rabbits with bilaterally implanted electrodes into: motor-sensory cortex, ventro-postero-lateral thalamic nuclei, hippocampus and LRF. No...