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https://www.readbyqxmd.com/read/28325912/lysosomal-activity-maintains-glycolysis-and-cyclin-e1-expression-by-mediating-ad4bp-sf-1-stability-for-proper-steroidogenic-cell-growth
#1
Jhih-Siang Syu, Takashi Baba, Jyun-Yuan Huang, Hidesato Ogawa, Chi-Han Hsieh, Jin-Xian Hu, Ting-Yu Chen, Tzu-Chien Lin, Megumi Tsuchiya, Ken-Ichirou Morohashi, Bu-Miin Huang, Fu-L Lu, Chia-Yih Wang
The development and differentiation of steroidogenic organs are controlled by Ad4BP/SF-1 (adrenal 4 binding protein/steroidogenic factor 1). Besides, lysosomal activity is required for steroidogenesis and also enables adrenocortical cell to survive during stress. However, the role of lysosomal activity on steroidogenic cell growth is as yet unknown. Here, we showed that lysosomal activity maintained Ad4BP/SF-1 protein stability for proper steroidogenic cell growth. Treatment of cells with lysosomal inhibitors reduced steroidogenic cell growth in vitro...
March 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28324699/low-vigorous-physical-activity-is-associated-with-increased-adrenocortical-reactivity-to-psychosocial-stress-in-students-with-high-stress-perceptions
#2
Markus Gerber, Sebastian Ludyga, Manuel Mücke, Flora Colledge, Serge Brand, Uwe Pühse
OBJECTIVES: The pathways by which physical activity impacts on participants' health are still not fully understood. The purpose of the present study was to go beyond existing research by combining methods from survey-based and experimental stress research, and by examining whether the potential of vigorous physical activity (VPA) to attenuate physiological and psychological stress responses is moderated by participants' subjective stress perception. METHODS: The sample consisted of 42 undergraduate students (M=21...
March 6, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28324035/long-term-outcomes-of-adjuvant-mitotane-therapy-in-patients-with-radically-resected-adrenocortical-carcinoma
#3
A Berruti, S Grisanti, A Pulzer, M Claps, F Daffara, P Loli, M Mannelli, M Boscaro, E Arvat, G Tiberio, S Hahner, B Zaggia, F Porpiglia, M Volante, M Fassnacht, M Terzolo
Context: in 2007, a large retrospective case-control study provided evidence that adjuvant mitotane prolongs recurrence-free survival (RFS) in patients with radically resected adrenocortical carcinoma (ACC). Objective and design: We aimed to confirm the prognostic role of adjuvant mitotane in the same series after 9 additional years of follow-up. Setting, Patients and Interventions: 162 ACC patients included in the previous study, who did not recur or die after a landmark period of 3 months, were considered...
January 11, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323907/resveratrol-inhibits-androgen-production-of-human-adrenocortical-h295r-cells-by-lowering-cyp17-and-cyp21-expression-and-activities
#4
Nesa Marti, Nadia Bouchoucha, Kay-Sara Sauter, Christa E Flück
Resveratrol, a natural compound found in grapes, became very popular for its suggested protective effects against aging. It was reported to have similar positive effects on the human metabolism as caloric restriction. Recently, positive effects of resveratrol on steroid biosynthesis in cell systems and in humans suffering from polycystic ovary syndrome have also been reported, but the exact mechanism of this action remains unknown. Sirtuins seem targeted by resveratrol to mediate its action on energy homeostasis...
2017: PloS One
https://www.readbyqxmd.com/read/28320513/morphology-and-ultrastructure-of-the-adrenal-gland-in-bactrian-camels-camelus-bactrianus
#5
Wen-Ling Ye, Feng-Ling Wang, Hong-Ju Wang, Jian-Lin Wang
In the present study, we examined the morphological features of the adrenal gland in Bactrian camel by means of digital anatomy, light and electron microscopy. Our findings testified that the gland was divided into three parts, capsule, cortex and medulla from outside to inside as other mammals, and the cortex itself was further distinguished into four zones: zona glomerulosa, zona intermedia, zona fasciculate and zona reticularis. Notably, the zona intermedia could be seen clearly in the glands from females and castrated males, whereas it was not morphologically clear in male...
January 31, 2017: Tissue & Cell
https://www.readbyqxmd.com/read/28315639/effect-of-home-cage-bedding-in-the-induction-chamber-on-serum-cortisol-and-corticosterone-levels-in-response-to-isoflurane-induced-anesthesia-in-c57bl-6j-mice
#6
Cara P Reiter, Amanda C Christy, Cara H Olsen, David E Bentzel
Mice are routinely anesthetized with isoflurane in an induction chamber. The AVMA Guidelines for the Euthanasia of Animals states that distress should be minimized during euthanasia but does not address this point in regard to induction of anesthesia. Here we evaluated the potential for familiar surroundings to reduce the adrenocortical response of mice during anesthesia induction with isoflurane. However, adding bedding from the animals' home cage to the induction chamber failed to significantly reduce serum cortisol or corticosterone levels in male and female C57BL/6J mice...
March 1, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/28314545/loneliness-in-older-adults-is-associated-with-diminished-cortisol-output
#7
N Schutter, T J Holwerda, M L Stek, J J M Dekker, D Rhebergen, H C Comijs
OBJECTIVE: Loneliness in older adults has been associated with increased mortality and health problems. One of the assumed underlying mechanisms is dysregulation of the hypothalamic-pituitary-adrenocortical axis (HPA-axis). The purpose of this study was to investigate whether loneliness in older adults is associated with HPA-axis dysregulation and whether this association differs between depressed and non-depressed persons. METHODS: Cross-sectional data of 426 lonely and non-lonely older adults in the Netherlands Study of Depression in Older Persons (NESDO) were used...
April 2017: Journal of Psychosomatic Research
https://www.readbyqxmd.com/read/28302174/feedback-inhibition-of-creb-signaling-by-p38-mapk-contributes-to-the-negative-regulation-of-steroidogenesis
#8
Jiaxin Li, Qian Zhou, Zhuang Ma, Meina Wang, Wen-Jun Shen, Salman Azhar, Zhigang Guo, Zhigang Hu
BACKGROUND: Steroidogenesis is a complex, multi-steps biological process in which, cholesterol precursor is converted to steroids in a tissue specific and tropic hormone dependent manner. Given that steroidogenesis is achieved by coordinated functioning of multiple tissue specific enzymes, many steroids intermediates/metabolites are generated during this process. Both the steroid products as well as major lipoprotein cholesterol donor, high-density lipoprotein 3 (hHDL3) have the potential to negatively regulate steroidogenesis via increased oxidative stress/reactive oxygen species (ROS) generation...
March 16, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28301846/programming-of-the-hypothalamus-pituitary-adrenal-axis-by-very-preterm-birth
#9
Martijn J J Finken, Bibian van der Voorn, Jonneke J Hollanders, Charlotte A Ruys, Marita de Waard, Johannes B van Goudoever, Joost Rotteveel
BACKGROUND: Many very preterm (i.e., <32 weeks of gestation) newborns fail to mount an adequate adrenocortical response to stress or illness, termed relative adrenal insufficiency. Conversely, later in life these infants show features of increased glucocorticoid bioactivity, such as abdominal adiposity, insulin resistance, raised blood pressure, shorter stature and internalizing problem behavior. SUMMARY: Studies suggested that very preterm newborns have impairments along multiple levels of the hypothalamus-pituitary-adrenal (HPA) axis...
March 17, 2017: Annals of Nutrition & Metabolism
https://www.readbyqxmd.com/read/28299447/markers-of-physiological-stress-during-exercise-under-conditions-of-normoxia-normobaric-hypoxia-hypobaric-hypoxia-and-genuine-high-altitude
#10
David Richard Woods, John Paul O'Hara, Christopher John Boos, Peter David Hodkinson, Costas Tsakirides, Neil Edward Hill, Darren Jose, Amanda Hawkins, Kelly Phillipson, Antonia Hazlerigg, Nicola Arjomandkhah, Liam Gallagher, David Holdsworth, Mark Cooke, Nicholas Donald Charles Green, Adrian Mellor
PURPOSE: To investigate whether there is a differential response at rest and following exercise to conditions of genuine high altitude (GHA), normobaric hypoxia (NH), hypobaric hypoxia (HH), and normobaric normoxia (NN). METHOD: Markers of sympathoadrenal and adrenocortical function [plasma normetanephrine (PNORMET), metanephrine (PMET), cortisol], myocardial injury [highly sensitive cardiac troponin T (hscTnT)], and function [N-terminal brain natriuretic peptide (NT-proBNP)] were evaluated at rest and with exercise under NN, at 3375 m in the Alps (GHA) and at equivalent simulated altitude under NH and HH...
March 15, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28283666/clinical-parameters-and-adrenocortical-activity-to-assess-stress-responses-of-alpacas-using-different-methods-of-restraint-either-alone-or-with-shearing
#11
T Wittek, T Salaberger, R Palme, S Becker, F Hajek, B Lambacher, S Waiblinger
Shearing of alpacas is stressful and is undertaken by restraint in the standing position, cast on the floor or on a tilt table. The objectives of the study were to evaluate and compare the stress responses between different methods. The study consisted of two parts. In part one, 15 animals were restrained applying all three methods but without shearing. In part two, 45 animals in three groups of 15 were shorn using one of the three procedures. Body temperature, heart rate, respiratory rate, salivary cortisol and faecal cortisol metabolites (FCM) were measured...
March 10, 2017: Veterinary Record
https://www.readbyqxmd.com/read/28279779/effects-of-mate-separation-in-female-and-social-isolation-in-male-free-living-greylag-geese-on-behavioural-and-physiological-measures
#12
Sonja C Ludwig, Katharina Kapetanopoulos, Kurt Kotrschal, Claudia A F Wascher
The presence of a social partner may significantly contribute to coping with stressful events, whereas dyadic separation generally increases glucocorticoid levels and, thereby, might also affect immune function and health. To study the covariation between social factors, immuno-reactive corticosterone metabolites, haematology and parasite product excretion patterns in a free-living, long-term monogamous bird, we separated pair mates in Greylag geese (Anser anser). We isolated the males of eight pairs for 48hours to examine behavioural, adrenocortical, haematological and parasitological responses to mate removal in the female partners, and to social isolation in the males...
March 6, 2017: Behavioural Processes
https://www.readbyqxmd.com/read/28277340/update-on-adrenocortical-carcinoma-management-and-future-directions
#13
Jeena Varghese, Mouhammed Amir Habra
PURPOSE OF REVIEW: To present an update on the management of and future directions in adrenocortical carcinoma (ACC). RECENT FINDINGS: ACC is a rare malignancy with high morbidity and mortality. Surgery remains the mainstay treatment for localized disease, but it is often not feasible in more advanced cases. There is an ongoing controversy about the routine use of adjuvant treatments after surgery. Hormonal overproduction can complicate the management and worsen the prognosis of the disease...
March 8, 2017: Current Opinion in Endocrinology, Diabetes, and Obesity
https://www.readbyqxmd.com/read/28274546/long-term-outcome-of-patients-with-x-linked-adrenoleukodystrophy-a-retrospective-cohort-study
#14
Christel Tran, Jaina Patel, Hewson Stacy, Eva G Mamak, Hanna Faghfoury, Julian Raiman, Joe T R Clarke, Susan Blaser, Saadet Mercimek-Mahmutoglu
BACKGROUND: X-linked adrenoleukodystrophy (X-ALD) is a peroxisomal disorder associated with leukodystrophy, myeloneuropathy and adrenocortical insufficiency. We performed a retrospective cohort study to evaluate long-term outcome of patients with X-ALD. METHOD: All patients with X-ALD diagnosed between 1989 and 2012 were included. Electronic patient charts were reviewed for clinical features, biochemical investigations, molecular genetic testing, neuroimaging, long-term outcome and treatment...
February 21, 2017: European Journal of Paediatric Neurology: EJPN
https://www.readbyqxmd.com/read/28271381/tissue-expression-and-pharmacological-in-vitro-analyses-of-mtor-and-sstr-pathways-in-adrenocortical-carcinoma
#15
Antonina Germano, Ida Rapa, Eleonora Duregon, Arianna Votta, Jessica Giorcelli, Consuelo Buttigliero, Giorgio V Scagliotti, Marco Volante, Massimo Terzolo, Mauro Papotti
New therapies for advanced adrenocortical carcinoma (ACC) are urgently needed, as the majority of the patients experience a rapid and inexorable progression despite surgery and adjuvant mitotane. In vitro data suggest that somatostatin receptors (SSTRs) and mTOR pathway might represent reasonable targets for novel therapies, being involved in functionality and growth of ACC cells. However, in vitro analysis of combination treatments targeting both mTOR and SSTR as compared to mitotane are poorly explored in ACC...
March 7, 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/28270555/dosage-dependent-regulation-of-vav2-expression-by-steroidogenic-factor-1-drives-adrenocortical-carcinoma-cell-invasion
#16
Carmen Ruggiero, Mabrouka Doghman-Bouguerra, Silviu Sbiera, Iuliu Sbiera, Maddy Parsons, Bruno Ragazzon, Aurélie Morin, Estelle Robidel, Judith Favier, Jérôme Bertherat, Martin Fassnacht, Enzo Lalli
Adrenocortical carcinoma (ACC) is a rare endocrine malignancy with a dismal prognosis. Genomic studies have enabled progress in our understanding of the molecular bases of ACC, but factors that influence its prognosis are lacking. Amplification of the gene encoding the transcription factor steroidogenic factor-1 (SF-1; also known as NR5A1) is one of the genetic alterations common in ACC. We identified a transcriptional regulatory mechanism involving increased abundance of VAV2, a guanine nucleotide exchange factor for small GTPases that control the cytoskeleton, driven by increased expression of the gene encoding SF-1 in ACC...
March 7, 2017: Science Signaling
https://www.readbyqxmd.com/read/28261922/a-case-of-primary-aldosteronism-caused-by-unilateral-multiple-adrenocortical-micronodules-presenting-as-muscle-cramps-at-rest-the-importance-of-functional-histopathology-for-identifying-a-culprit-lesion
#17
Atsushi Ito, Yuto Yamazaki, Hironobu Sasano, Daisuke Matsubara, Noriyoshi Fukushima, Mio Tamba, Kenichi Tabata, Kentaro Ashizawa, Akihito Takei, Masaru Koizumi, Yasunaru Sakuma, Naohiro Sata, Hisashi Oshiro
Unilateral multiple adrenocortical micronodules (UMNs) constitute a rare subset of primary aldosteronism (PA) characterized by the hypersecretion of aldosterone derived from multiple small nodules in the zona glomerulosa of the unilateral adrenal grand. This case study describes a 49-year-old man with PA and UMNs who presented with muscle cramps at rest due to hypokalemia. The patient had a 6-year history of hypertension treated with antihypertensive drugs. Imaging studies revealed bilateral adrenal nodules as large as 5 mm...
March 5, 2017: Pathology International
https://www.readbyqxmd.com/read/28260193/management-and-prognosis-of-adrenocortical-tumors-in-children-can-we-find-out-an-appropriate-points-scoring-system-to-predict-prognosis
#18
Wei Ru, Min Yang, Shan Xu, Minju Li, Daxing Tang
BACKGROUND/PURPOSE: Adrenocortical tumors (ACTs) are rare in childhood. There are no recognized criteria to exactly distinguish between benign and malignant forms, or predict prognosis. The incidence of tumor varies across geographic regions or ethnicities, as well as malignant proportion. The aim of this study is to examine a single institution's experience with pediatric ACTs and to validate the prognostic value of the biologic/pathologic criteria of Wienecke. METHODS: Records of 26 pediatric ACTs between 1994 and 2016 in our center were reviewed retrospectively...
March 4, 2017: Pediatric Surgery International
https://www.readbyqxmd.com/read/28259701/-long-term-blood-pressure-outcome-after-unilateral-adrenalectomy-for-primary-hyperaldosteronism
#19
F Saint, R Prader, C Cordonnier, G Choukroun, N Elesper, R Desailloud
OBJECTIVES: To evaluate long-term results of adrenalectomy for primary aldosteronism (PA) and to identify prognostic factors associated. METHODS: Exhaustive retrospective review of all consecutive patients undergoing adrenalectomy for PA between 2002 and 2013 in our department. All patients underwent preoperative: clinical evaluation (age, sex, height, weight, systolic and diastolic BP under treatment, identification of anti-hypertension treatment), biological evaluation (potassium, renin, aldosterone) and radiological evaluation (CT and/or MRI)...
March 1, 2017: Progrès en Urologie
https://www.readbyqxmd.com/read/28258518/adrenocortical-carcinoma-arising-in-an-adrenal-rest-a-case-report-and-review-of-the-literature
#20
Kristine M Cornejo, Henrietta A Afari, Peter M Sadow
Carcinomas arising from embryonic adrenal rests are rare with only a handful of reported cases. We report a case of an adrenocortical carcinoma arising from an adrenal rest located between the bladder and prostate in a 51 year-old man. The patient presented following a year of rectal pain and constipation. Computed tomography (CT) scan revealed a 9 cm pelvic mass that appeared to arise from the soft tissue between the bladder and prostate, with displacement of the organs and narrowing of the rectal lumen, suspected to be a sarcoma...
March 3, 2017: Endocrine Pathology
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