Search results for " STRESS"
showing 10 items of 3936 documents
Effects of Chronic Social Defeat Stress on Behavior and Dopamine Receptors in Adolescent Mice With 6-Hydroxydopamine Lesions of the Medial Prefrontal…
2021
Background: Social stress factors in schizophrenia have long-term effects, but will only induce symptoms in a portion of individuals, even if exposed to identical stress.Methods: In the current experiment, we examined mice with 6-hydroxydopamine (6-OHDA)-induced medial prefrontal cortical (mPFC) injury to select for members of a “stress-susceptible group,” and observed the changes in their behavior and the expression of D1 and D2 dopamine receptors in the amygdala and hippocampus.Results: We observed that after chronic social defeat stress, 72.6% of the 6-OHDA lesioned mice exhibited stress response to aggressors, compared to 52.3% of the blank control group. Both the 6-OHDA lesion + social…
Vascular Dysfunction and Oxidative Stress in Diabetic Rats - Comparison of Beneficial Effects of AT1- Receptor Blockade, Calcium Antagonist, or Combi…
2013
Behavioral Traits Associated With Resilience to the Effects of Repeated Social Defeat on Cocaine-Induced Conditioned Place Preference in Mice
2020
The relationship between stress and drug use is well demonstrated. Stress-induced by repeated social defeat (RSD) enhances the conditioned place preference (CPP) induced by cocaine in mice. The phenomenon of resilience understood as the ability of subjects to overcome the negative effects of stress is the focus of increasing interest. Our aim is to characterize the behavior of resilient animals with respect to the effects of RSD on the CPP induced by cocaine. To this end, 25 male C57BL/6 mice were exposed to stress by RSD during late adolescence, while other 15 male mice did not undergo stress (controls). On the 2 days following the last defeat, all the animals carried out the elevated plus…
The assessment of surgery-related coping: The coping with surgical stress scale (COSS)
2000
Abstract Surgery can be regarded as a major stressor for any patient. High preoperative emotional arousal may negatively influence adjustment during surgery as well as the postoperative recovery rate. Consequently, the strategies individuals employ for coping with this stress are of prime importance for the quality of their adaptation. This paper reports the construction and empirical assessment of a new instrument for measuring strategies employed to cope with surgical stress. Factor analysis of this instrument, the Coping with Surgical Stress Scale (COSS), yielded five factors: Rumination, Optimism and Trust, Turning to Social and Religious Resources, Threat Avoidance, and Information See…
Hypertension is strongly associated with false-positive bicycle exercise stress echocardiography testing results
2016
Exercise echocardiography is a reliable routine test in patients with known or suspected coronary artery disease. However, in ∼15% of all patients, stress echocardiography leads to false-positive stress echocardiography results. We aimed to investigate the impact of hypertension on stress echocardiographic results.We performed a retrospective study of patients with suspected or known stable coronary artery disease who underwent a bicycle exercise stress echocardiography. Patients with false-positive stress results were compared with those with appropriate results.126 patients with suspected or known coronary artery disease were included in this retrospective study. 23 patients showed false-…
Putative impact of the COVID-19 pandemic on anxiety, depression, insomnia and stress
2020
Children and Coronavirus Infection (Covid-19): What to Tell Children to Avoid Post-traumatic Stress Disorder (PTSD)
2020
Post-traumatic Stress Disorder (PTSD) is a condition that can develop in subjects who have been or have witnessed a traumatic, catastrophic or violent event, or who have become aware of a traumatic experience that happened to a loved one. Acute Stress Disorder (ASD) usually begins immediately after the traumatic event and lasts from three days to a month, while Post-traumatic Stress Disorder (PTSD) may be the continuation of an acute stress disorder and it may happen that it does not develop until 6 months after the event itself. Generally most people overcome the shock that a blatant event can cause without the need for additional support. In a percentage of cases, the victim's suffering c…
Worsening of pre-existing psychiatric conditions during the COVID-19 pandemic
2020
This study anonymously examined 2,734 psychiatric patients worldwide for worsening of their pre-existing psychiatric condition during the COVID-19 pandemic. Valid responses mainly from 12 featured countries indicated self-reported worsening of psychiatric conditions in 2/3rd of the patients assessed that was validated through their significantly higher scores on scales for general psychological disturbance, post-traumatic stress disorder, and depression. Female gender, feeling no control of the situation and reporting dissatisfaction with the response of the state during the COVID-19 pandemic, and reduced interaction with family and friends increased the worsening of pre-existing psychiatri…
Chronic low level metribuzin exposure induces metabolic alterations in rats
2013
Abstract In this work we evaluated the in vivo effects of chronic metribuzin exposure at doses that mimic human exposure through diet. Male and female rats were fed a potato diet containing metribuzin at low doses (D1, 1.3 mg/kg or D2, 13 mg/kg) for 3 months. Plasma biochemical parameters (glucose, lipid, urea, creatinine, alanine aminotransferase (ALT), aspartate aminotransferase (AST)), as well as lipid and protein contents, markers of oxidative stress in different organs (liver, adipose tissue, muscle, intestine) were determined. Our results showed that exposure to metribuzin induced a significant reduction in body weight, food intake and adverse alterations in biochemical parameters suc…
The influence of NiTi alloy on the cyclic fatigue resistance of endodontic files
2020
Background: The aim of this study was to analyze the influence of NiTi alloy in endodontic rotary instruments on cyclic fatigue resistance. Methods: One hundred and sixty-four (164) sterile endodontic rotary files were selected and distributed into the following study groups: A: 25.08 F2 ProTaper Universal (PTU) (n = 41)