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cortisol cycle

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
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
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
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
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
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
Ryan J McDonough, Patria Alba, Kavitha Dileepan, Joseph T Cernich
BACKGROUND: The High Dose Adrenocorticotropic Hormone (ACTH) Stimulation Test is the gold standard to diagnose adrenal insufficiency. Normal adrenal function is defined as a peak cortisol response to pharmacologic stimulation with cosyntropin of ≥18 μg/dL. Our practice was to obtain cortisol levels at 0, 30 and 60 min after cosyntropin administration. Once a value of ≥18 μg/dL has been obtained, adrenal insufficiency is ruled out and there is little diagnostic utility in subsequent stimulated levels...
February 24, 2018: Journal of Pediatric Endocrinology & Metabolism: JPEM
Arnaud Jannin, Emilie Merlen, Christine Do Cao, Nicolas Penel
Recently developed immunotherapeutic agents, like anti-cytotoxic T lymphocyte antigen 4 antibody (CTLA4), anti-programmed cell death 1 (PD1) or anti-programmed cell death-ligand 1 (PDL1), have demonstrated substantial potential for the treatment of a variety of malignancies. Autoimmune side effects from these agents are diverse and can include multiple endocrinopathies like immunotherapy induced hypophysitis (IH). These toxicities appear to be more frequent in patients receiving anti-CTLA4 antibody compared to PD1/PDL1 agents...
February 20, 2018: Bulletin du Cancer
Nadia Gagnon, Isabelle Fréchette, Pierre-Luc Mallet, Jean Dubé, Ghislaine Houde, Guy D Fink
OBJECTIVES: To determine salivary cortisol reference intervals in a healthy adult population, at 6 different time points during a 24-hour (h) period. METHODS: In a prospective study, salivary cortisol concentrations were measured upon waking, one-hour post-waking and at specific times of the day: at 12 h00, 16 h00, 20 h00 and midnight. Samples were analyzed by the first and second-generation electrochemiluminescence assays (ECLIA) from Roche Cobas Cortisol®...
February 19, 2018: Clinical Biochemistry
Jian Liu, Xuemei Qiu, Daoming Wang, Yantao Li, Yang Zong, Yichen Liu, Yue Zhang, Ping Yang, Yong Zuo, Huanming Yang, Jian Wang, Yutao Du, Jin Zi
Objective This study was performed to investigate the effects of age and sex on 10 salivary steroid hormones and analyze the correlations between salivary and plasma hormones. Methods The concentrations of 10 salivary steroid hormones in 1090 Chinese adult volunteers were examined using liquid chromatography-tandem mass spectrometry, and a related investigation was performed on the concentrations of salivary hormones in this population. Results The concentrations of androstenedione (A4), 17α-hydroxyprogesterone (17-OHP), aldosterone (ALD), cortisone (COR), corticosterone (CORT), cortisol (F), progesterone (P), and testosterone were significantly different between men and women (Student's t-test)...
January 1, 2018: Journal of International Medical Research
Mónica Patricia Cala, María Teresa Agulló-Ortuño, Elena Prieto-García, Carolina González-Riano, Lucía Parrilla-Rubio, Coral Barbas, Carmen Vanesa Díaz-García, Antonia García, Cristina Pernaut, Jorge Adeva, María Carmen Riesco, Francisco Javier Rupérez, Jose Antonio Lopez-Martin
BACKGROUND: Cachexia is a metabolic syndrome that affects up to 50-80% of cancer patients. The pathophysiology is characterized by a variable combination of reduced food intake and abnormal metabolism, including systemic inflammation and negative protein and energy balance. Despite its high clinical significance, defined diagnostic criteria and established therapeutic strategies are lacking. The 'omics' technologies provide a global view of biological systems. We hypothesize that blood-based metabolomics might identify findings in cachectic patients that could provide clues to gain knowledge on its pathophysiology, and eventually postulate new therapeutic strategies...
February 20, 2018: Journal of Cachexia, Sarcopenia and Muscle
Aatit Paungmali, Leonard Henry Joseph, Khanittha Punturee, Patraporn Sitilertpisan, Ubon Pirunsan, Sureeporn Uthaikhup
OBJECTIVE: The main objective of the study was to measure the levels of plasma β-endorphin (PB) and plasma cortisol (PC) under lumbar core stabilization exercise (LCSE), placebo and control conditions in patients with chronic nonspecific low back pain. METHODS: Twenty-four participants with chronic nonspecific low back pain participated in a randomized, placebo-controlled, crossover design study. There were 3 experimental exercise conditions: control condition (positioning in crook lying and rest), placebo condition (passive cycling in crook lying using automatic cycler), and LCSE on a Pilates device tested with a 48-hour interval between sessions by concealed randomization...
February 17, 2018: Journal of Manipulative and Physiological Therapeutics
Cynthia J Downs, Brianne V Boan, Thomas D Lohuis, Kelley M Stewart
Life-history theory is fundamental to understanding how animals allocate resources among survival, development, and reproduction, and among traits within these categories. Immediate trade-offs occur within a short span of time and, therefore, are more easily detected. Trade-offs, however, can also manifest across stages of the life cycle, a phenomenon known as carryover effects. We investigated trade-offs on both time scales in two populations of Dall sheep ( Ovis dalli dalli ) in Southcentral Alaska. Specifically, we (i) tested for glucocorticoid-mediated carryover effects from the breeding season on reproductive success and immune defenses during parturition and (ii) tested for trade-offs between immune defenses and reproduction within a season...
2018: Frontiers in Immunology
Kamau Pierre, Rohit T Rao, Clara Hartmanshenn, Ioannis P Androulakis
Synchronization of biological functions to environmental signals enables organisms to anticipate and appropriately respond to daily external fluctuations and is critical to the maintenance of homeostasis. Misalignment of circadian rhythms with environmental cues is associated with adverse health outcomes. Cortisol, the downstream effector of hypothalamic-pituitary-adrenal (HPA) activity, facilitates synchronization of peripheral biological processes to the environment. Cortisol levels exhibit substantial seasonal rhythmicity, with peak levels occurring during the short-photoperiod winter months and reduced levels occurring in the long-photoperiod summer season...
February 12, 2018: Endocrinology
Jin-Cheng Song, Xiao-Lei Ding, Xiu-Hua Sun, Mohammed Safi, Juan Tian
RATIONALE: Melanoma with brain metastasis is associated with a poor prognosis and high mortality rate. As patients with this condition have been excluded from most clinical trials, data on the use of anti-programmed death 1 therapy for these patients are limited. PATIENT CONCERNS: The patient was a 62-year-old man with a 10-year history of melanotic nevus in his right forearm. He was admitted to another hospital in August 2015 due to the growth of the melanotic nevus over 1 year and complaint of a mass in the right mid-axillary area...
December 2017: Medicine (Baltimore)
Sunita M C De Sousa, Nisa Sheriff, Chau H Tran, Alexander M Menzies, Venessa H M Tsang, Georgina V Long, Katherine T T Tonks
PURPOSE: Hypophysitis develops in up to 19% of melanoma patients treated with ipilimumab, a cytotoxic T-lymphocyte antigen-4 antibody. Early detection may avert life-threatening hypopituitarism. We aimed to assess the incidence of ipilimumab-induced hypophysitis (IH) at a quaternary melanoma referral centre, and to determine whether cortisol or thyroid stimulating hormone (TSH) monitoring could predict IH onset. METHODS: We performed a retrospective cohort study of ipilimumab-treated patients at a quaternary melanoma referral centre in Australia...
January 29, 2018: Pituitary
Rebecca Calisi, Suzanne H Austin, Andrew S Lang, Matthew D MacManes
Stress is a well-known cause of reproductive dysfunction in many species, including birds, rodents, and humans, though males and females may respond differently. A powerful way to investigate how stress affects reproduction is by examining its effects on a biological system essential for regulating reproduction, the hypothalamic-pituitary-gonadal (HPG) axis. Often this is done by observing how a stressor affects the amount of glucocorticoids, such as cortisol or corticosterone, circulating in the blood and their relationship with a handful of known HPG-producing reproductive hormones, like testosterone and estradiol...
January 26, 2018: Hormones and Behavior
Aleksandra Gilis-Januszewska, Małgorzata Wilusz, Jacek Pantofliński, Renata Turek-Jabrocka, Grzegorz Sokołowski, Anna Sowa-Staszczak, Łukasz Kluczyński, Dorota Pach, Grzegorz Zieliński, Alicja Hubalewska-Dydejczyk
AbstractContext: Aggressive pituitary tumours causing Cushing's Disease are very rare, difficult to treat, and usually resistant to conventional therapy. There is growing evidence for the use of temozolomide (TZM), an alkylating chemotherapeutic agent, as first line chemotherapy in tumours resistant to repeated neurosurgery, radiotherapy and adrenalectomy. OBJECTIVE: To present the response to TMZ in a rare case of an aggressive pituitary tumour in the course of Cushing's Disease and to review the literature referring to similar cases...
January 10, 2018: Endokrynologia Polska
Laura I Stirrat, Jamie J Walker, Ksenia Stryjakowska, Natalie Jones, Natalie Zm Homer, Ruth Andrew, Jane E Norman, Stafford L Lightman, Rebecca M Reynolds
OBJECTIVE: Hypothalamic-pituitary-adrenal-axis (HPA) activity is decreased in obese pregnancy and associates with increased fetal size. Pulsatile release of glucocorticoid hormones regulates their action in target tissues. Glucocorticoids are essential for normal fetal growth but little is known about glucocorticoid pulsatility in pregnancy. We aimed to investigate the ultradian rhythm of glucocorticoid secretion during obese and lean pregnancy and non-pregnancy. DESIGN: Serum cortisol, cortisone, corticosterone and 11-dehydrocorticosterone were measured by LC-MS/MS from samples obtained at 10-minute intervals between 08...
January 5, 2018: Clinical Endocrinology
Matthias Nemeth, Bernard Wallner, Carina Siutz, Elisabeth Pschernig, Karl-Heinz Wagner, Eva Millesi
Reproductive functions in female mammals can be significantly affected by the actions of dietary polyunsaturated fatty acids (PUFAs) on steroid hormone secretion rates. Nevertheless, the effects of plasma free PUFAs on the oestrous cycle have seldom been considered. Therefore, in the present study, the diet of domestic guinea pigs was supplemented with high concentrations of different PUFAs and the effects of altered plasma PUFA patterns on steroid hormone concentrations, measured non-invasively, and body mass during oestrus and dioestrus were analysed...
January 8, 2018: Reproduction, Fertility, and Development
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