Resilient, but for how long? The relationships between temperament, burnout, and mental health in healthcare workers during the Covid-19 pandemic.

Introduction: Dispositional traits of wellbeing and stress-reaction are strong predictors of mood symptoms following stressful life events, and the COVID-19 pandemic introduced many life stressors, especially for healthcare workers.

Methods: We longitudinally investigated the relationships among positive and negative temperament group status (created according to wellbeing and stress-reaction personality measures), burnout (exhaustion, interpersonal disengagement), COVID concern (e.g.

Quality of life and persisting symptoms in intensive care unit survivors: implications for care after discharge.

Background: We assessed the quality of life of ICU survivors using SF-36 at 4 months after ICU discharge and investigated any correlation of PCS and MCS with age, illness severity and hospital or ICU length of stay. We examined the relationship between these variables, persisting physical and psychological symptoms and the perceived benefit of individual patients of follow-up.

Findings: For one year, adult patients admitted for multiple organ or advanced respiratory support for greater than 48 hours to a 16-bedded teaching hospital general intensive care unit were identified.

Differential expression of two beta-galactoside-binding lectins in the reproductive tracts of pregnant mice.

Two beta-galactoside-binding proteins were isolated from uteroplacental complexes of pregnant mice and identified as the S-Lac lectins galectin-1 and galectin-3. The spatiotemporal pattern of appearance of those proteins was determined by immunocytochemistry. Galectin-1 was present in all tissue compartments of the uterus except the luminal and glandular epithelium.

Alterations in growth rate associated with a normally persisting circadian rhythm during spaceflight.

Background: Biological clocks time many physiological parameters with periodicities close to 24 h; those which persist in the absence of environmental cues are circadian. An earlier shuttle experiment (STS-9) examined circadian pacemaker function and growth rate of Neurospora crassa and demonstrated damped rhythm amplitudes, increased variability in period lengths and altered growth rates.

Hypothesis: Postflight studies suggested that accelerative forces of launch could have induced rhythm alterations.

Hyperestrogenism induced by menotropins alone or in conjunction with luprolide acetate in in vitro fertilization cycles: the impact on hemostasis.

Objective: To evaluate coagulation parameters during IVF cycles with elevated E2.

Design: Prospective clinical study.

Setting: Human volunteers in an IVF clinic.

Career development: a life span issue.

One of the challenges for individuals pursuing a career throughout their life span is how to maintain a high level of professional competence. As the composition of the workforce changes, and new technologies are developed, workers are faced with changing job demands and pressures. A major issue for the 1990s is how long a worker's skills will remain current.

Neurokinin3 receptor regulation of acetylcholine release from myenteric plexus.

This study sought to characterize the action of neurokinin B (NKB) and senktide, a selective synthetic agonist for NK3 receptors, on the myenteric plexus of the guinea pig small intestine. Both peptides stimulated a dose-dependent release of [3H]-acetylcholine (ACh). The mean effective dose values were 1 x 10(-9) for NKB and 3 x 10(-11) M for senktide.

Modulation of submucosal cholinergic neurons by 5-hydroxytryptamine and neuropeptides.

Release of [3H]acetylcholine ([3H]ACh) was examined in a submucous plexus preparation obtained from the guinea pig small intestine in vitro. Constant-current field stimulation evoked ACh output; this output was dependent on the stimulus frequency applied. Maximal release was observed at 10 Hz; this release was blocked by tetrodotoxin (1 x 10(-6) M) or in Ca2(+)-free buffer.

Characterization of acetylcholine release from enzyme-dissociated myenteric ganglia.

Longitudinal muscle strips adhered with myenteric plexus were subjected to enzyme digestion under controlled conditions in a Krebs-bicarbonate buffer solution containing a mixture of collagenase, deoxyribonuclease, protease, choline chloride, and bovine serum albumin for 30 min at 37 degrees C. Myenteric ganglia, singly or in multiple aggregates, were harvested with micropipette and labeled with [3H]choline for [3H]acetylcholine (ACh) release studies. When examined by light or electron (transmission or scanning) microscopy, the ganglia exhibited their normal structural characteristics with axon bundles, dendrites, cell bodies, and vesiculated processes.

Stimulation of acetylcholine release from myenteric neurons of guinea pig small intestine by forskolin and cyclic AMP.

Forskolin, an activator of adenylate cyclase, was used to examine the regulation of [3H]acetylcholine (ACh) release by cyclic AMP (cAMP)-related mechanisms in myenteric plexus-longitudinal muscle preparations of guinea pig small intestine. Forskolin evoked a dose-related increase in [3H]ACh release. Both dibutyryl-cAMP and 8-Br-cAMP significantly elevated [3H]ACh secretion.

Evidence for galanin as an inhibitory neuropeptide on myenteric cholinergic neurons in the guinea pig small intestine.

The effect of galanin on the [3H]ACh release from myenteric plexus-longitudinal muscle strips of the guinea pig small intestine was studied. While galanin did not alter the basal spontaneous efflux of ACh, it significantly depressed the ACh release evoked by electrical stimulation or caused by VIP and substance P. These results suggest an important neuromodulatory role for galanin in the enteric nervous system.

Bradykinin releases acetylcholine from myenteric plexus by a prostaglandin-mediated mechanism.

Release of [3H]acetylcholine (ACh) under the influence of bradykinin was measured from myenteric plexus-longitudinal muscle strips taken from guinea pig small intestine. Bradykinin stimulated the efflux of [3H]ACh in a dose-dependent manner. This stimulation by bradykinin was resistant to the effect of [Des-Arg9-Leu8]-bradykinin but not to indomethacin, indicating that the ACh-releasing action of bradykinin was mediated indirectly by a prostaglandin mechanism.

Calcium-dependent stimulation of acetylcholine release by substance P and vasoactive intestinal polypeptide.

In the guinea-pig myenteric plexus-longitudinal muscle preparation from the small intestine, the release of acetylcholine evoked by substance P and vasoactive intestinal polypeptide was examined in vitro. Both neuropeptides stimulated efflux of [3H]acetylcholine from myenteric neurons in a calcium-dependent manner. This observation is consistent with the view that neurotransmitter release elicited by neuropeptides requires the presence of extracellular calcium ions.

Inhibitory peptidergic neurons: functional difference between somatostatin and enkephalin in myenteric plexus.

This study reports on a difference in the inhibitory action of the neuropeptides somatostatin and Met-enkephalin on acetylcholine (ACh) release from myenteric plexus-longitudinal muscle strips of guinea pig small intestine. Met-enkephalin (8.7 X 10(-8) M) inhibited ACh release evoked by either substance P (3.