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Cortisol - DOAJ

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Last Updated: 19 September 2022

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Real-time racial discrimination, affective states, salivary cortisol and alpha-amylase in Black adults.

The autonomic nervous system and hypothalamic-pituitary-adrenal axis' operation, as well as two major stress response tools, have been blamed for racial discrimination. The aim of this research was to investigate the connection between racial discrimination measured in real-time and physiological stress responses. For four days, twelve healthy Black adults completed baseline questionnaires and self-gathered saliva samples 4x/day to determine cortisol and alpha amylase as a proxy of HPA and ANS systems, respectively. Multilevel models were used to investigate the connection between racial profiling and stress responses. A flatter diurnal slope of cortisol was discovered on the day when people reported more microaggressions than normal, suggesting that microaggressions were more common on the day than normal. Both salivary biomarkers and EMA were effective tools to investigate the temporal association of racial discrimination and physiological stress responses.

Source link: https://doi.org/10.1371/journal.pone.0273081


Prenatal stress assessment using heart rate variability and salivary cortisol: A machine learning-based approach.

Methods ECG signals and salivary cortisol were determined from 29 pregnant women as part of a cross-over research involving a measured acute psychological stress exposure and a control non-stress condition. Results A graphical representation of stress and non-stress exposures were evident among 17 participants between the two visits, as well as cortisol measurements, which enabled the stress assessment system to distinguish between stress and non-stress exposures with greater certainty. The eight participants did not show a significant difference between HR and HRV variables, but they did have a significant rise in cortisol after stress relative to non-stress conditions. When combining salivary cortisol with HR and HRV measurements, our machine learning system shows satisfactory accuracy in detecting acute stress among pregnant women.

Source link: https://doi.org/10.1371/journal.pone.0274298


Associations of testosterone and cortisol concentrations with sleep quality in Japanese male workers

This research sought to investigate the correlations of testosterone and cortisol concentrations with sleep quality and to examine potential differences between them in Japanese working men. The Pittsburgh Sleep Quality Index's Japanese version of the Pittsburgh Sleep Quality Index was used to determine sleep quality, and it included measures such as sleep duration, time in bed, and sleep efficacy. Testosterone and cortisol concentrations were negatively correlated with TIB, according to the researchers, although testosterone concentrations were positively correlated with sleep quality. An interaction between testosterone and cortisol was significant for TIB and sleep quality. When stratified by cortisol concentrations, testosterone levels and sleep parameters were altered, as cortisol concentrations were stratified. Our results show that testosterone levels and sleep parameters are higher at low cortisol levels, but not at high cortisol levels. Low testosterone levels may exacerbate sleep inefficiency and decreased sleep quality, according to high cortisol concentrations.

Source link: https://doi.org/10.1016/j.cpnec.2022.100158


Testosterone and cortisol responses to ß‐hydroxy ß‐methylbutryate consumption and exercise: A meta‐analysis

U03b2 u2013hydroxy u201methylbutryate u03b2hydroxytreptahydrate, a leucine amino acid derivative with various health-related functions. b01b2 u2013hydroxy u3b2hydroxyu203b2u2010methylbutryate is a leucine amino acid metabolite with a multitude of ergogenic properties. Previous research also showed that it might also have an effect on athletes' testosterone and cortisol levels. We wanted to perform this meta-u2010analysis to determine the HMB supplementation effect on testosterone and cortisol in athletes due to the inconsistent findings between studies. Although the meta-u2010analysis generally showed that HMB consumption did not have no effect on the cortisol and testosterone levels, a significant rise in testosterone levels in aerobic and anaerobic combined sports despite the fact that the metau2010analysis revealed that HMB intake did not have a significant decrease in the cortisol concentration in resistance training exercises and a significant rise in testosterone levels in aerobic and anaerobic combined sports showed no effect on the cortisol and testosterone levels Conclusions HMB supplementation in athletes can reduce the concentration of cortisol in resistance exercises and raise the concentration of testosterone in aerobic and anaerobic combined exercises, according to the study.

Source link: https://doi.org/10.1002/fsn3.2887


Prenatal stress assessment using heart rate variability and salivary cortisol: A machine learning-based approach

Methods ECG signals and salivary cortisol were determined from 29 pregnant women as part of a cross study involving a widely administered acute psychological stress exposure and a control non-stress condition. Result Graph representation The stress assessment tool helped the stress assessment model to distinguish between stress and non-stress exposures with greater certainty among 17 participants on the two visits, with a marked difference in heart rate, HRV parameters, and cortisol. While eight participants did not have a clear difference between HR and HRV parameters, they did not show a significant rise in cortisol under strain, relative to non-stress conditions. When combining salivary cortisol with HR and HRV variables, our machine learning system shows acceptable accuracy in the detection of acute distress among pregnant women.

Source link: https://doaj.org/article/6cc9365298804a598ec796629ad62c95


Effects of cortisol on female-to-male sex change in a wrasse.

Cortisol, the key stress hormone in fish, is believed to be a key factor in sex change by triggering gene expression shifts that shift steroidogenesis from oestrogens to androgens, but this assumption needs to be rigorously tested. We also tried to find potential key legislative factors within the head kidney that may contribute to the initiation and progression of gonadal sex change. After 71 days of cortisol therapy, histological examination of the gonads and sex hormone tests revealed no signs of sex change. However, expression analysis of sex and stress-related genes in gonad and head kidney showed that cortisol therapy did not have a physiological effect. Genes from both gonad and head kidney have been shown to early sex change in several sex-changing species have been found in many species of sex change.

Source link: https://doi.org/10.1371/journal.pone.0273779


Cortisol response under low intensity exercise during cognitive-behavioral therapy is associated with therapeutic outcome in panic disorder-an exploratory study.

Patients with Panic Disorder have an abnormally active hypothalamic-Pituitary-adrenal axis, as shown by the Hypothalamic-Pituitary-adrenal axis. Stress induction protocols are of comparatively low importance for psychotherapeutic therapy. LIE's current situation, although it is not known, has resulted in a high incidence of anxiety induction; 2. a similar HPA- and Sympathetic-Medullar SAM-axis response in both patients and healthy controls; and 3. stress responses under LIE are related to treatment outcomes; Patients with PD and n = 20 healthy controls were treated to ten minutes of LIE on an exercise bike by a patient with PD and n = 20 healthy controls. A higher psychopathology before, and after CBT was associated with a significantly lower cortisol response in LIE. Conclusions LIE led to a divergent stress response during the present research: although there was a significant heart rate rise, cortisol decreased over time, particularly in male patients.

Source link: https://doi.org/10.1371/journal.pone.0273413


Loneliness and diurnal cortisol levels during COVID-19 lockdown: the roles of living situation, relationship status and relationship quality

During the first lockdown in Germany, we investigated living conditions, marital status, and quality as potential moderators for trait and state loneliness, salivary cortisol levels in healthy adults. Participants with a partner and those who were living apart from their partner reported loneliness levels similar to singles living alone. Living alone has been correlated with greater loneliness. In predicting cortisol, hierarchical linear models revealed a significant cross-level relationship between relationship status and momentary loneliness.

Source link: https://doi.org/10.1038/s41598-022-19224-2


Evaluating the Interrelationship Between Salivary Cortisol and Glycemia in Type 2 Diabetics

The aim of the study was to determine salivary cortisol levels in healthy controls and type 2 diabetics. Twenty patients in Group II included 20 patients from 30 to 60 years with type 2 diabetes with HbA1c 6. 5% were included. Methods and Methods: In Group II, 20 patients were included from 30 to 60 years old with HbA1c 6. 5%. paraphrasedL in the morning was 1. 62 mmol/dL, and the evening was 1. 34 mmol/dL. The mean salivary cortisol concentration of healthy subjects in the morning was 0. 47 mmol/dL and the evening was 0. 29 mmol/dL, which is statistically significant. Conclusion: The salivary cortisol level in patients with type 2 diabetes is elevated in patients with type 2 diabetes when compared to healthy controls, according to the authors. There are no changes in diabetes patients''s serum and evening salivary cortisol levels.

Source link: https://doi.org/10.4103/jofs.jofs_96_22


Machine learning guided electrochemical sensor for passive sweat cortisol detection

A machine learning algorithm was also developed to analyze sensor data to detect rising and decreasing cortisol trends with time, which may help inform the wearer of elevated or decreasing cortisol levels. Both the one-way ANOVA and post-hoc Tukey tests demonstrated significant responses to different levels of cortisol. To develop and classify increasing and decreasing cortisol in sweat, a rate of change of response to shifts in cortisol concentration was used to refine a weighted K nearest neighbor machine learning algorithm to measure and classify increasing and decreasing cortisol levels. Sensor measurement of sweat samples from human subjects showed a 100% reliability in testing with the algorithm as well as a 0 percent false positive and 0% False negative rate, demonstrating that a wearable sweat sensor can be used with ML to detect increasing and decreasing cortisol consumption trends, which can be used with ML to determine increasing and decreasing trends in cortisol use in noninvasive sensing.

Source link: https://doi.org/10.1016/j.sbsr.2022.100527

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions