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https://www.readbyqxmd.com/read/28732265/chronic-work-stress-and-decreased-vagal-tone-impairs-decision-making-and-reaction-time-in-jockeys
#1
Kathleen Landolt, Paul Maruff, Ben Horan, Michael Kingsley, Glynda Kinsella, Paul D O'Halloran, Matthew W Hale, Bradley J Wright
The inverse relationship between acute stress and decision-making is well documented, but few studies have investigated the impact of chronic stress. Jockeys work exhaustive schedules and have extremely dangerous occupations, with safe performance requiring quick reaction time and accurate decision-making. We used the effort reward imbalance (ERI) occupational stress model to assess the relationship of work stress with indices of stress physiology and decision-making and reaction time. Jockeys (N=32) completed computerised cognitive tasks (Cogstate) on two occasions; September and November (naturally occurring lower and higher stress periods), either side of an acute stress test...
July 14, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28731983/a-systematic-review-and-meta-analysis-of-the-effort-reward-imbalance-model-of-workplace-stress-and-hpa-axis-measures-of-stress
#2
Pennie Eddy, Eleanor H Wertheim, Matthew W Hale, Bradley J Wright
OBJECTIVE: The association between effort reward imbalance (ERI) and various health outcomes has been well-documented over the past 20 years, but the mechanisms responsible for this association remain unclear. The present meta-analysis assessed the associations of ERI and over-commitment (OC) in the workplace with hypothalamic-pituitary-adrenal (HPA) axis measures. METHODS: Electronic databases were searched with the phrase 'effort*reward*imbalance' which yielded 319 studies leading to 56 full text studies being screened...
July 20, 2017: Psychosomatic Medicine
https://www.readbyqxmd.com/read/28730418/total-and-free-cortisol-levels-during-1-%C3%AE-g-25-%C3%AE-g-and-250-%C3%AE-g-cosyntropin-stimulation-tests-compared-to-insulin-tolerance-test-results-of-a-randomized-prospective-pilot-study
#3
Seenia Peechakara, James Bena, Nigel J Clarke, Michael J McPhaul, Richard E Reitz, Robert J Weil, Pablo Recinos, Laurence Kennedy, Amir H Hamrahian
PURPOSE: The appropriate cosyntropin dose during cosyntropin stimulation tests remains uncertain. We conducted a prospective, randomized pilot study to compare 1 μg IV low dose cosyntropin test, 25 μg IM medium dose cosyntropin test, and 250 μg IM standard dose cosyntropin test to evaluate secondary adrenal insufficiency. Insulin tolerance test was used as the gold standard. METHOD: The study included patients with hypothalamic/pituitary disease (n  = 10) with at least one pituitary axis deficiency other than ACTH deficiency and controls (n  = 12)...
July 20, 2017: Endocrine
https://www.readbyqxmd.com/read/28729791/correlation-between-salivary-cortisol-levels-and-dental-anxiety-in-children-of-smokers-and-nonsmokers
#4
S Pavani Reddy, M Ghanashyam Prasad, A Naga RadhaKrishna, Kaniti Saujanya, N V K Raviteja, B Deepthi
OBJECTIVES: The present study was undertaken to evaluate salivary cortisol levels in children of smokers and nonsmokers and thereby establishing the relationship between cortisol levels in response to anxiety in children based on their father's habit of smoking. MATERIALS AND METHODS: The study population aged between 8 and 10 years includes two groups. Group 1 is comprised 20 children of cigarette smokers and Group 2 is comprised 20 children of nonsmokers. The passive drooling technique was used to collect unstimulated saliva from the children using a sterile container...
April 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28729707/status-stress-and-performance-in-track-and-field-athletes-during-the-european-games-in-baku-azerbaijan
#5
Benjamin Siart, Alfred Nimmerichter, Claudia Vidotto, Bernard Wallner
This study analyzes the relationship between salivary cortisol and testosterone levels and performance in track and field athletes. In addition, we analyzed the influence of status among athletes (measured based on previous athletic achievement) on hormone levels. Nineteen members of the Austrian track and field team (eleven males, eight females, 25.9 ± 3.9 years of age, 74.9 ± 20.1 kg, and 179.3 ± 10 cm) participated in this study. Data was collected during the European Games in Baku. Athletes delivered saliva samples at various time-points including morning samples and samples directly before and after the competition...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28728381/blood-haematology-muscle-ph-and-serum-cortisol-changes-in-pigs-with-different-levels-of-drip-loss
#6
Nunyarat Koomkrong, Chaiwat Boonkaewwan, Watchara Laenoi, Autchara Kayan
Objective: An experiment was conducted to study the blood haematology, muscle pH and serum cortisol changes in pigs with different levels of drip loss. Methods: Two groups (low and high) of 20 animals were selected from 100 pigs based on drip loss. All [Duroc × (Large White × Landrace)] pigs were slaughtered according to standard slaughtering procedures. At exsanguinations, blood samples were taken for the haematological parameters and serum cortisol analysis...
June 26, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28728380/effects-of-different-space-allowances-on-growth-performance-blood-profile-and-pork-quality-in-a-grow-to-finish-production-system
#7
J C Jang, X H Jin, J S Hong, Y Y Kim
Objective: This experiment was conducted to evaluate the optimal space allowance on growth performance, blood profile and pork quality of growing-finishing pigs. Methods: A total of ninety crossbred pigs ([Yorkshire x Landrace] x Duroc, 30.25 ± 1.13 kg) were allocated into three treatments (0.96: four pigs / pen, 0.96 m2/pig; 0.80: five pigs / pen, 0.80 m2/pig; 0.69: six pigs / pen, 0.69 m2/pig) in a randomized complete block (RCB) design. Pigs were housed in balanced sex and had free access to feed in all phases for 14 weeks (growing phase I, growing phase II, finishing phase I and finishing phase II)...
June 26, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28728377/post-prandial-decrease-in-plasma-growth-hormone-levels-is-not-related-to-the-increase-in-plasma-insulin-levels-in-goats
#8
Koki Nishihara, Ryoko Kobayashi, Yutaka Suzuki, Katsuyoshi Sato, Kazuo Katoh, Sang-Gun Roh
Objective: In the present study, we examined whether the post-prandial reduction in plasma growth hormone (GH) levels is related to the increase in plasma insulin levels in ruminants. Methods: We performed two experiments: intravenous bolus injection of insulin (0.2 IU/kg body weight) or glucose (1.0 mmol/kg body weight) was administered to increase the plasma insulin levels in male Shiba goats. Results: In the insulin injection experiment, significant (p<0...
June 26, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28728370/endotoxin-induced-inflammation-disturbs-melatonin-secretion-in-ewe
#9
Andrzej Przemysław Herman, Karolina Wojtulewicz, Joanna Bochenek, Agata Krawczyńska, Hanna Antushevich, Bartosz Pawlina, Marlena Zielińska-Góska, Anna Herman, Katarzyna Romanowicz, Dorota Tomaszewska-Zaremba
The study was designed to determine the effect of intravenous administration of bacterial endotoxin - lipopolysaccharide (LPS) - on the nocturnal secretion of melatonin and on the expression of enzymes of the melatonin biosynthetic pathway in the pineal gland of ewes, taking into account two different photoperiodic conditions: short night (SN; n = 12) and long night (LN; n = 12). Endotoxin administration lowered (P < 0.05) levels of circulating melatonin in animals from LN photoperiod only during the first hour after treatment, while in ewes from SN photoperiod only in the third hour after the injection...
June 27, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28728007/direct-immune-detection-of-cortisol-by-chemiresistor-graphene-oxide-sensor
#10
Yo-Han Kim, Kyungmin Lee, Hunsang Jung, Hee Kyung Kang, Jihoon Jo, In-Kyu Park, Hyun Ho Lee
In this study, a biosensor to detect a stress biomarker of cortisol using cortisol monoclonal antibody (c-Mab) covalently immobilized on reduced graphene oxide (rGO) channel as electrical sensing element was demonstrated. Highly specific immune-recognition between the c-Mab and the cortisol was identified and characterized on a basis of resistance change at the rGO channel based chemiresistor sensor achieving the limit of detection of 10pg/mL (27.6 pM). In addition, cortisol concentrations of real human salivary sample and buffer solution of rat adrenal gland acute slices, which could secret the cortisol induced by adrenocorticotropic hormone (ACTH), were directly measured by the chemiresistor corresponding to the specific sensing of the cortisol...
July 11, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28727940/intestinal-transit-time-and-cortisol-mediated-stress-in-zebrafish
#11
Clayton Brady, Maxwell Denora, Ian Shannon, Karl J Clark, Adam Rich
Intestinal motility, the spontaneous and rhythmic smooth muscle contraction, is a complex process that is regulated by overlapping and redundant regulatory mechanisms. Primary regulators intrinsic to the gastrointestinal tract include interstitial cells of Cajal, enteric neurons, and smooth muscle cells. Extrinsic primary regulators include the autonomic nervous system, immune system, and the endocrine system. Due to this complexity, a reductionist approach may be inappropriate if the ultimate goal is to understand motility regulation in vivo...
July 20, 2017: Zebrafish
https://www.readbyqxmd.com/read/28727578/physical-activity-and-survival-in-women-with-advanced-breast-cancer
#12
Oxana Palesh, Charles Kamen, Susan Sharp, Ashleigh Golden, Eric Neri, David Spiegel, Cheryl Koopman
BACKGROUND: Several empirical investigations have attempted to characterize the effect of physical activity on cancer mortality, but these investigations have rarely focused on patients with advanced breast cancer. OBJECTIVE: The current study examined the hypothesis that greater physical activity is associated with longer survival among women with advanced breast cancer. METHODS: We conducted a secondary data analysis of a prospective study of 103 patients with stage IV (n = 100) or locally recurrent (n = 3) breast cancer involved in a group psychotherapy trial...
July 19, 2017: Cancer Nursing
https://www.readbyqxmd.com/read/28727113/feed-withdrawal-and-transportation-effects-on-salmonella-enterica-levels-in-market-weight-pigs
#13
S D Eicher, M H Rostagno, D C Lay
Feed withdrawal and transport commonly occur together in pigs. Objectives of this study were to determine if these preslaughter stressors, feed withdrawal and transportation, affect the levels of , stress hormone concentrations, and immune functions in infected market pigs. A 2 × 2 factorial analysis of a randomized complete block design with feed withdrawal and transport as fixed effects was used. Sixty market-weight pigs were individually inoculated with serovar Typhimurium. The experiment was replicated 3 times (blocking factor) with 20 pigs per replicate...
July 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727093/effects-of-intravenous-lipopolysaccharide-administration-on-feed-intake-ruminal-forage-degradability-and-liquid-parameters-and-physiological-responses-in-beef-cattle
#14
K D Lippolis, R F Cooke, K M Schubach, R S Marques, D W Bohnert
This experiment compared DMI, ruminal forage degradability, and liquid parameters as well as physiological responses in beef cattle receiving a lipopolysaccharide (LPS) challenge or not. Eight ruminally cannulated Angus × Hereford steers (485 ± 16 kg BW) were housed in individual pens on d -7, ranked by BW, and allocated to 1 of 2 treatments administered on d 0: 1) an intravenous (i.v.) bolus dose (0.5 μg/kg of BW, diluted in 5 mL of 0.9% sterile saline) of bacterial LPS ( 0111:B4) or 2) a 5-mL i.v. injection of 0...
July 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727025/effect-of-handling-intensity-at-the-time-of-transport-for-slaughter-on-physiological-response-and-carcass-characteristics-in-beef-cattle-fed-ractopamine-hydrochloride
#15
J A Hagenmaier, C D Reinhardt, S J Bartle, J N Henningson, M J Ritter, M S Calvo-Lorenzo, G J Vogel, C A Guthrie, M G Siemens, D U Thomson
The effects of handling intensity on the physiological response and carcass characteristics of feedlot cattle fed ractopamine hydrochloride were evaluated at the time of transport to slaughter. Eighty steers (BW = 668 ± 36 kg) representing 10 lots of similar breed, frame size, and degree of finish were blocked by lot, stratified by weight, and randomly assigned to 1 of 2 handling intensities (HI) over a 1,600 m dirt alley course: 1) low-stress handling (LSH) or 2) high-stress handling (HSH). For the LSH treatment, 4 penmates were kept at a walk with the use of a lead rider...
May 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28726995/effects-of-transdermal-flunixin-meglumine-on-pain-biomarkers-at-dehorning-in-calves
#16
M D Kleinhenz, N K Van Engen, P J Gorden, J Ji, P Walsh, J F Coetzee
The objective of this study was to evaluate the analgesic properties of transdermal flunixin meglumine when given at the time of dehorning on pain biomarkers. Twenty-four weaned male Holstein calves, 6 to 8 wk of age were enrolled into the study. The calves were randomly assigned to 1 of 3 treatment groups: 1) transdermal flunixin and dehorn (DH-FLU); 2) transdermal flunixin and sham dehorn (SHAM-FLU); and 3) placebo and dehorn (DH-PLBO). Transdermal flunixin at a label dose of 3.33 mg/kg (or placebo at an equivalent volume) was administered as a pour-on along the top-line of the calves in each treatment group concurrently with electrocautery dehorning or sham dehorning...
May 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28726982/effects-of-ractopamine-hydrochloride-on-growth-performance-carcass-characteristics-and-physiological-response-to-different-handling-techniques
#17
J A Hagenmaier, C D Reinhardt, M J Ritter, M S Calvo-Lorenzo, G J Vogel, C A Guthrie, M G Siemens, K F Lechtenberg, D J Rezac, D U Thomson
Feedlot cattle ( = 128; BW = 549 ± 60 kg) were used to evaluate the effects of ractopamine hydrochloride (RAC) on growth performance, physiological response to handling, and mobility during shipment for slaughter in a study utilizing a split-plot design with a 2 × 2 factorial arrangement of treatments: 1) diet (CON [no β-adrenergic agonist] vs. RAC [400 mg·animal·d ractopamine hydrochloride for 28 d]) and 2) handling intensity (HI; low-stress handling [LSH; cattle moved at a walking pace with no electric prod use] vs...
May 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28726650/-modified-system-of-thromboprophylaxis-in-patients-with-surgical-profile
#18
O Kolotylo, I Venher, S Kostiv, A Iftodiy
The aim of the study was to reduce the incidence of postoperative thrombosis in the veins of the inferior vena cava basin under planned surgical interventions by using a modified thromboprophylaxis method. Two groups of patients were studied in a total of 698 patients who underwent a risk assessment of postoperative venous thromboembolism (PVTE) using the J. Caprini scale (2012). According to the patients indicated in determining the degree of risk of HTHP development according to the J. Caprini scale, the level of surgical stress was simultaneously determined...
June 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28726485/annals-express-20%C3%AE-and-20%C3%AE-dihydrocortisone-may-interfere-in-lc-ms-ms-determination-of-cortisol-in-saliva-and-urine
#19
Marlen Israelsson, Ralph Brattsand, Goran Brattsand
BACKGROUND: LC-MS/MS methods offer high selectivity in cortisol determinations. However, endogenous steroid metabolites may still interfere and compromise the results, for example in the diagnosis of Cushing´s syndrome. Erroneously elevated cortisol may, in particular, be misleading at the low concentrations found in salivary samples obtained at late night and after dexamethasone suppression. METHODS: Interferences in our LC-MS/MS method used for determination of cortisol in saliva and urine were identified by comparing their retention times and mass spectra with those of pure candidate substances...
January 1, 2017: Annals of Clinical Biochemistry
https://www.readbyqxmd.com/read/28725257/study-protocol-an-investigation-of-mother-infant-signalling-during-breastfeeding-using-a-randomised-trial-to-test-the-effectiveness-of-breastfeeding-relaxation-therapy-on-maternal-psychological-state-breast-milk-production-and-infant-behaviour-and-growth
#20
N H M Shukri, J Wells, F Mukhtar, M H S Lee, M Fewtrell
BACKGROUND: The physiological and psychological signalling between mother and infant during lactation is one of the prominent mother-infant factors that may influence breastfeeding outcomes. The infant can 'signal' his needs through vocalisation, and the mother can respond by allowing or restricting nipple access, which might alter the breast milk composition or volume. This may lead to parent-offspring conflict during the lactation period. Challenging infant behaviour has also been associated with maternal psychological distress, which might affect breastfeeding performance...
2017: International Breastfeeding Journal
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