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https://www.readbyqxmd.com/read/29769824/immune-response-in-women-during-exercise-in-the-heat-a-spotlight-on-oral-contraception
#1
Brianna Larsen, Amanda J Cox, Karlee Quinn, Rhiannon Fisher, Clare Minahan
This study compared the immune and stress response of oral contraceptive users (WomenOC; n = 9) to normally-menstruating women (WomenNM; n = 9) at rest and during exercise in temperate (TEMP; 22°C) and hot (HEAT; 35°C) conditions. Participants performed a 3-stage cycling trial in each condition at 90% (Stage 1; 30 min), 135% (Stage 2; 15 min), and 180% (Stage 3; 7.5 min) of lactate threshold 1. C-reactive protein (CRP) and immune cell counts were measured at rest, and serum cytokines (IL-1β, IL-1RA, IL-6, IL-8, IL-10, and TNF-α) and salivary cortisol were evaluated before and after exercise in both the TEMP and HEAT conditions...
June 2018: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29760304/metyrapone-responsive-ectopic-acth-secreting-pheochromocytoma-with-a-vicious-cycle-via-a-glucocorticoid-driven-positive-feedback-mechanism
#2
Minako Inoue, Ken Okamura, Chie Kitaoka, Fumio Kinoshita, Ryo Namitome, Udai Nakamura, Masaki Shiota, Kenichi Goto, Toshio Ohtsubo, Kiyoshi Matsumura, Yoshinao Oda, Masatoshi Eto, Takanari Kitazono
In ectopic ACTH-secreting pheochromocytoma, combined ACTH-driven hypercortisolemia and hyper-catecholaminemia are serious conditions, which can be fatal if not diagnosed and managed appropriately, especially when glucocorticoid-driven positive feedback is suggested with a high ACTH/cortisol ratio. A 46-year-old man presented with headache, rapid weight loss, hyperhidrosis, severe hypertension and hyperglycemia without typical Cushingoid appearance. Endocrinological examinations demonstrated elevated plasma and urine catecholamines, serum cortisol and plasma ACTH...
May 15, 2018: Endocrine Journal
https://www.readbyqxmd.com/read/29755146/stigma-consciousness-modulates-cortisol-reactivity-to-social-stress-in-women
#3
David Matthew Doyle, Lisa Molix
The aim of the current study was to examine whether stigma consciousness shapes cortisol responses to social stress among women in the lab. Undergraduate women ( N = 45) completed background measures and then participated in a public speaking task, with assessments of cortisol prior to the stressor as well as 20- and 40-minutes post stressor onset. Results from multilevel models revealed that women higher in stigma consciousness evidenced blunted cortisol reactivity following social stress across the study session compared to women lower in stigma consciousness...
March 2018: European Journal of Social Psychology
https://www.readbyqxmd.com/read/29743827/the-effect-of-carbohydrate-mouth-rinse-on-performance-biochemical-and-psychophysiological-variables-during-a-cycling-time-trial-a-crossover-randomized-trial
#4
Amanda M J Ferreira, Luiz F Farias-Junior, Thaynan A A Mota, Hassan M Elsangedy, Aline Marcadenti, Telma M A M Lemos, Alexandre H Okano, Ana P T Fayh
Background: The hypothesis of the central effect of carbohydrate mouth rinse (CMR) on performance improvement in a fed state has not been established, and its psychophysiological responses have not yet been described. The aim of this study was to evaluate the effect of CMR in athletes fed state on performance, biochemical and psychophysiological responses compared to ad libitum water intake. Methods: Eleven trained male cyclists completed a randomized, crossover trial, which consisted of a 30 km cycle ergometer at self-selected intensity and in a fed state...
2018: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/29737878/involvement-of-cortisol-and-sirtuin1-during-the-response-to-stress-of-hypothalamic-circadian-system-and-food-intake-related-peptides-in-rainbow-trout-oncorhynchus-mykiss
#5
Fatemeh Naderi, Juan Hernández-Pérez, Mauro Chivite, José L Soengas, Jesús M Míguez, Marcos A López-Patiño
Stress is conditioning animal welfare by negatively affecting a wide range of physiological and behavioral functions. This may be applied to circadian physiology and food intake. Cortisol, the stress-related hormone, may mediate such effect of stress, but other indirect mediators might be considered, such as sirtuin1. Then, either the independent modulatory effect or the existence of any interaction between mediators may be responsible. The circadian system is the main modulator of several integrative mechanisms at both central and peripheral levels that are rhythmically presented, thus influencing different processes such as food intake...
May 8, 2018: Chronobiology International
https://www.readbyqxmd.com/read/29678493/analysis-and-validation-of-a-new-extended-method-for-estimating-plasma-free-cortisol-including-neutrophil-elastase-and-competition-from-other-steroids
#6
Johanne Gudmand-Hoeyer, Johnny T Ottesen
A non-linear mechanistic model for the distribution of cortisol in plasma on free and bound forms is proposed. The influence of progesterone, testosterone and neutrophil elastase on the cortisol distribution in the blood is investigated. The activity of neutrophil elastase is directly included in the model with the concentration of elastase and the kinetic constants describing the activity of elastase collected in one single input variable. The model is very sensitive towards this input variable and fits data excellently, when it is allowed to be subject specific...
April 17, 2018: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29673619/progesterone-and-women-s-anxiety-across-the-menstrual-cycle
#7
Tania A Reynolds, Anastasia Makhanova, Urszula M Marcinkowska, Grazyna Jasienska, James K McNulty, Lisa A Eckel, Larissa Nikonova, Jon K Maner
Animal models and a few human investigations suggest progesterone may be associated with anxiety. Progesterone naturally fluctuates across the menstrual cycle, offering an opportunity to understand how within-person increases in progesterone and average progesterone levels across the cycle correspond to women's anxiety. Across two longitudinal studies, we simultaneously modeled the between- and within-person associations between progesterone and anxiety using multilevel modeling. In Study 1, 100 Polish women provided saliva samples and reported their anxiety at three phases of the menstrual cycle: follicular, peri-ovulatory, and luteal...
April 16, 2018: Hormones and Behavior
https://www.readbyqxmd.com/read/29668864/bovine-embryo-elongation-is-altered-due-to-maternal-fatty-acid-supplementation
#8
K Giller, B Drews, J Berard, H Kienberger, M Schmicke, J Frank, B Spanier, H Daniel, G Geisslinger, S E Ulbrich
The pre-implantation period is prone to embryonic losses in bovine. Embryo-maternal communication is crucial to support embryo development. Thereby, factors of the uterine fluid (UF) are of specific importance. The maternal diet can affect the UF composition. Since omega 3 fatty acids (omega 3 FA) are considered to be beneficial for reproduction, we investigated if dietary omega 3 FA affected factors in the UF related to embryo elongation. Angus heifers (n = 37) were supplemented with either 450 g of rumen-protected fish oil (omega 3 FA) or sunflower oil (omega 6 FA) for a period of 8 weeks...
April 12, 2018: Biology of Reproduction
https://www.readbyqxmd.com/read/29668082/altered-stress-hormone-response-following-acute-exercise-during-prostate-cancer-treatment
#9
Erik D Hanson, Samy Sakkal, William S Evans, John A Violet, Claudio L Battaglini, Glenn K McConell, Alan Hayes
Exercise training reduces the side effects of cancer treatments, however, the stress hormone response to acute exercise during prostate cancer (PCa) treatment is unclear. PURPOSE: To examine the effects of acute exercise on circulating cortisol, epinephrine (Epi), and norepinephrine (NE) concentrations during PCa treatment with and without androgen deprivation therapy (ADT). METHODS: Men with PCa (n=11), with PCa on ADT (n=11) and non-cancer controls (n=8) had blood samples for stress hormones collected before and immediately (0h), 2h, and 24h after 45 minutes of intermittent cycling at 60% of peak wattage...
April 18, 2018: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29656052/autologous-serum-collected-1h-post-exercise-enhances-natural-killer-cell-cytotoxicity
#10
Priti Gupta, Austin B Bigley, Melissa Markofski, Mitzi Laughlin, Emily C LaVoy
Natural Killer cells are cytotoxic lymphocytes that recognize and eliminate tumor cells. Exercise enhances NK cell cytotoxic activity (NKCA), yet the underlying mechanisms are not fully understood. Exercise-induced shifts in NK-cell subsets has been proposed as one mechanism. Alternatively, exercise alters stress hormone and cytokine levels, which are also known to affect NKCA. AIM: Determine the role(s) of exercise-induced shifts in the proportions of NK-cell subsets found in the blood, and changes in serum IL-2, IL-6, IL-12, IFN-γ, TNF-α and cortisol, on exercise-induced changes in NKCA...
April 12, 2018: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29648657/influences-of-the-menstrual-phase-on-cortisol-response-to-stress-in-nicotine-dependent-women-a-preliminary-examination
#11
Motohiro Nakajima, Sharon Allen, Mustafa al'Absi
Introduction: Evidence indicates that menstrual cycle phase plays a role in smoking withdrawal symptoms and craving. Stress increases these symptoms. Whether the stress regulatory mechanism is associated with menstrual phase and withdrawal symptoms is not well understood. Methods: Thirty-seven female smokers and 16 female nonsmokers were asked to complete a laboratory session. In each group, approximately half of the participants were tested when they were in the follicular phase and the other half was tested in the luteal phase...
April 10, 2018: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/29627864/exercise-intensity-and-its-impact-on-relationships-between-salivary-immunoglobulin-a-saliva-flow-rate-and-plasma-cortisol-concentration
#12
Christof A Leicht, Victoria L Goosey-Tolfrey, Nicolette C Bishop
INTRODUCTION: Salivary secretory immunoglobulin A (sIgA), saliva flow rate and plasma cortisol concentrations have been shown to be influenced by exercise, particularly the intensity exercise is performed at, and circadian variation. The autonomic nervous system partly regulates salivary secretion, but it is not yet known whether cortisol also explains some variation in salivary parameters. METHODS: Twelve moderately trained male individuals ([Formula: see text]peak legs : 46...
April 7, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29605399/the-relationship-between-the-menstrual-cycle-and-cortisol-secretion-daily-and-stress-invoked-cortisol-patterns
#13
Eva Montero-López, Ana Santos-Ruiz, M Carmen García-Ríos, Manuel Rodríguez-Blázquez, Heather L Rogers, María Isabel Peralta-Ramírez
The menstrual cycle involves significant changes in hormone levels, causing physical and psychological changes in women that are further influenced by stress. The aim of this study was to understand the relationship between menstrual cycle phase and salivary cortisol patterns during the day as well as the salivary cortisol response to the Virtual Reality Version of the Trier Social Stress Test (TSST-VR). Forty two women not taking oral contraceptives (24 in follicular phase and 18 in luteal phase) participated in the study...
March 29, 2018: International Journal of Psychophysiology
https://www.readbyqxmd.com/read/29576358/a-lecithin-phosphatidylserine-and-phosphatidic-acid-complex-pas-reduces-symptoms-of-the-premenstrual-syndrome-pms-results-of-a-randomized-placebo-controlled-double-blind-clinical-trial
#14
Katja Schmidt, Nicole Weber, Meir Steiner, Nadin Meyer, Anne Dubberke, David Rutenberg, Juliane Hellhammer
BACKGROUND & AIMS: Many women experience emotional and physical symptoms around the time of ovulation and more so before menstruation interfering with their daily normal life also known as premenstrual syndrome (PMS). Recent observational data suggest that supplementation with Lipogen's phosphatidylserine (PS) and phosphatidic acid (PA) complex (PAS) alleviates these PMS symptoms. The aim of this study was to confirm these observations on the effects of PAS on PMS symptom severity within a controlled clinical trial setting...
April 2018: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/29547783/the-plasma-protein-binding-of-the-endogenous-glucocorticosteroids-is-of-vital-importance-for-the-concentrations-in-hair-and-saliva
#15
Aniko Krumbholz, Martin Schönfelder, Hande Hofmann, Detlef Thieme
BACKGROUND: The endogenous glucocorticosteroid cortisol (F) and its metabolite cortisone (E) are known to be involved in stress adaption and anti-inflammatory and immune regulatory effects. The ratios of F to E in the matrices serum, hair and saliva are different. The shift of this ratio by the enzyme activity of 11β-hydroxysteroid-dehydrogenase, which inactivates cortisol, was often discussed. The aim of our study was to calculate the contribution of the plasma protein binding (PPB) to this shift...
February 26, 2018: Forensic Science International
https://www.readbyqxmd.com/read/29535548/exercise-induced-changes-in-stress-hormones-and-cell-adhesion-molecules-in-obese-men
#16
Jinkyung Park, Darryn S Willoughby, Joon Jin Song, Brian C Leutholtz, Yunsuk Koh
Purpose: The current study examined the relationship between exercise-induced changes in stress hormones (epinephrine, norepinephrine, and cortisol) and vascular inflammatory markers (soluble intracellular adhesion molecule-1 [sICAM-1], soluble endothelial selectin [sE-selectin], and soluble vascular adhesion molecule-1 [sVCAM-1]) in obese men over a 24-hour period following exercise at lower and higher intensity. Patients and methods: Fifteen physically inactive, obese, college-aged men performed a single bout of cycling exercise at lower and higher intensities (lower intensity: 50% of maximal heart rate, and higher intensity: 80% of maximal heart rate) in random order...
2018: Journal of Inflammation Research
https://www.readbyqxmd.com/read/29532999/nutlin-3a-as-a-novel-anticancer-agent-for-adrenocortical-carcinoma-with-ctnnb1-mutation
#17
Wen Hui, Shenghua Liu, Jie Zheng, Zujun Fang, Qiang Ding, Chenchen Feng
Adrenocortical carcinoma (ACC) is a rare malignancy, and CTNNB1 is frequently mutated in ACC. Our study aims to screen for effective agents with antineoplastic activity against ACC with CTNNB1 mutation. In-silico screening of the Genomics of Drug Sensitivity in Cancer (GDSC) database was conducted. Drug sensitivity in cells with CTNNB1 mutation was analyzed and further in vitro and in vivo studies were performed using the compound. Only one compound, Nutlin-3a, an MDM2 inhibitor, was significantly sensitive in 18 cancer cells with CTNNB1 mutation...
March 13, 2018: Cancer Medicine
https://www.readbyqxmd.com/read/29527708/reactive-aggression-tracks-within-participant-changes-in-women-s-salivary-testosterone
#18
Fabian Probst, Jessika Golle, Vanda Lory, Janek S Lobmaier
The relation between testosterone and aggression has been relatively well documented in men, but it is less well understood in women. Here we assessed the relationship between salivary testosterone and reactive aggression (i.e., rejection rate for unfair offers) in the Ultimatum Game. Forty naturally cycling women were tested twice, once in the late follicular phase (around ovulation) and once during the luteal phase. Ovulation was determined using urine test strips measuring luteinizing hormone levels. Salivary samples were assayed for testosterone, estradiol, progesterone, and cortisol at both test sessions...
March 12, 2018: Aggressive Behavior
https://www.readbyqxmd.com/read/29525202/a-comparison-of-the-acute-physiological-responses-to-bodypump%C3%A2-versus-iso-caloric-and-iso-time-steady-state-cycling
#19
Nigel Harris, Andrew Kilding, Shivani Sethi, Fabrice Merien, Jinger Gottschall
OBJECTIVES: Given apparent consumer interest in calorie counting and arguably inadequate understanding of the differential effects of exercise modality despite equivalent caloric expenditure, we sought to quantify and compare the acute physiological responses within and between a BODYPUMP™ (BP) group-fitness class and steady-state cycling (CARDIO), matched for caloric cost (iso-caloric) and time (iso-time). DESIGN: Acute cross-over study design. METHODS: Twelve healthy recreationally active females (30...
March 2, 2018: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29511565/combination-immune-checkpoint-inhibitor-therapy-nivolumab-and-ipilimumab-associated-with-multiple-endocrinopathies
#20
Florence Gunawan, Elizabeth George, Adam Roberts
Immune checkpoint inhibitors are the mainstay of treatment for advanced melanoma, and their use is being increasingly implicated in the development of autoimmune endocrinopathies. We present a case of a 52-year-old man with metastatic melanoma on combination nivolumab and ipilumimab therapy who developed concurrent hypophysitis, type 1 diabetes mellitus (T1DM) and diabetes insipidus. He presented prior to third cycle of combination treatment with a headache, myalgias and fatigue. Biochemistry and MRI pituitary confirmed anterior pituitary dysfunction with a TSH: 0...
2018: Endocrinology, Diabetes & Metabolism Case Reports
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