Burnout is associated with poor mental and physical functioning and high costs for societies. Personality attributes may critically increase the risk of personal burnout. We specifically examined whether narcissism associates with personal burnout in a working population. We studied n=1,461 employees (mean age 41.3 ± 9.4 yr, 52% men) drawn from a random sample of a pharmaceutical company in Ger...

Introduction: Beta-actin is a housekeeping gene, which is used as an internal standard in various biological studies. Recently, it was reported that the expression of commonly used housekeeping genes including ß–actin changes in disease states or under certain experimental conditions. Based on the reports about the effects of sex hormones on the expression of the ß- actin gene, in this study...

1. Peptidergic neurones accumulate amines via an unusual uptake process, designated Transport-P. [(3)H]-prazosin binds to alpha(1) adrenoceptors on these cells and is displaceable by unlabelled prazosin in concentrations up to 10(-7) M. However, at greater concentrations of prazosin, there is a paradoxical accumulation of [(3)H]-prazosin which we have attributed to Transport-P. Uptake of prazos...

Kolaj M, Renaud LP. Presynaptic -adrenoceptors in median preoptic nucleus modulate inhibitory neurotransmission from subfornical organ and organum vasculosum lamina terminalis. Am J Physiol Regul Integr Comp Physiol 292: R1907–R1915, 2007. First published January 11, 2007; doi:10.1152/ajpregu.00763.2006.—The median preoptic nucleus (MnPO) in the lamina terminalis receives a prominent catecholam...

abstract introduction major ß thalassemia represents a group of recessively inherited hemoglobin disorder, which is characterized by reduced synthesis of globins chains. frequent blood transfusions can lead to iron overload, which may result in several endocrine complication especially in the absence of adequate chelating therapy. the objective of this study were to determine the prevalence of ...

ß-Carotene is present in extremely high concentrations in bovine corpus luteum. The aim of this study was to examine the extent of the seasonal variation in concentrations of luteal ß-carotene in cows. A total of 102 corpora lutea collected throughout all 12 months of the year were analysed by high performance liquid chromatography (HPLC). The mean ß-carotene concentration of the luteal tissues...

Beta3-Adrenoceptors are involved in the control of catecholamine-induced lipolysis in rodent adipose tissues. The expression and function of human beta3-adrenoceptors were investigated in subcutaneous white adipocytes of young healthy women. In these cells, beta3-adrenoceptor mRNAs represent 20% of total amount of beta-adrenoceptor transcripts and less than half of beta1-adrenoceptor transcript...

Sympathetic efferent nerves are present in tendons, but their function within tendon is unknown. alpha(1)-Adrenoceptors are expressed by a variety of cell types. In the presence of norepinephrine (NE), adrenoceptors activate G(q/11) signaling pathways that subsequently increase intracellular Ca(2+) concentration ([Ca(2+)](ic)). It was hypothesized that avian tendon cells express functional adre...

<span lang="EN-US">Bullying is one of the major issues worldwide and most prevalent school violence. Bullying a negative behavior toward an individual or group individuals that are considered weak. often associated with self-esteem. Therefore, this study was conducted to identify influence students’ tendency be bullies (physical, verbal, anti-social, cyber) on This involved 150 secondary ...

Here we investigate how ß-adrenergic stimulation of the heart alters regulation of ryanodine receptors (RyRs) by intracellular Ca(2+) and Mg(2+) and the role of these changes in SR Ca(2+) release. RyRs were isolated from rat hearts, perfused in a Langendorff apparatus for 5 min and subject to 1 min perfusion with 1 µM isoproterenol or without (control) and snap frozen in liquid N2 to capture th...