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Adrenal Gland AND Hormones

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https://www.readbyqxmd.com/read/28816283/-surgery-treatment-of-ectopic-adrenocorticotrophic-hormone-syndrome
#1
H Fan, H Z Li, W F Xu, Z G Ji, Y S Zhang
OBJECTIVE: To investigation the diagnosis and treatment of ectopic adrenocorticotrophic hormone (ACTH) syndrome. METHODS: The clinical characters of 57 cases of ecotopic ACTH syndrome from Jan. 1996 to Dec. 2016 were collected and analyzed. The 57 cases included 32 males and 25 females. The age ranged from 11 to 68 years (average 32 years). ACTH levels significantly increased from 16.5 to 365.6 pmol/L, with average 77.6 pmol/L (normal range <10.1 pmol/L). The pituitary MRI did not found lesions...
August 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28815561/early-segregation-of-the-adrenal-cortex-and-gonad-in-chicken-embryos
#2
Daisuke Saito, Koji Tamura, Yoshiko Takahashi
The adrenal gland is an endocrine organ that plays essential roles in stress responses. This organ consists of two types of tissues, adrenomedulla and adrenocortex, deriving from different embryonic origins. Whereas it is well accepted that the adrenomedulla derives from neural crest cells, the origin of the adrenocortex remains elusive. In addition, the adrenocortex and gonads, two major steroid hormone-producing tissues, have been thought to share the same origin, although the experimental evidence is lacking...
August 16, 2017: Development, Growth & Differentiation
https://www.readbyqxmd.com/read/28814582/adrenal-myelolipoma-s-as-presenting-manifestation-of-subclinical-cushing-s-disease-eutopic-acth-dependent-cushing-s-syndrome
#3
Partha Pratim Chakraborty, Shinjan Patra, Sugata Narayan Biswas, Rana Bhattacharjee
Primary adrenal myelolipomas, relatively rare benign tumours of the adrenal cortex are typically unilateral, hormonally inactive and asymptomatic, hence often diagnosed as 'adrenal incidentaloma'. Bilateral adrenal myelolipomas, in particular, may be associated with underlying endocrinopathies associated with elevated circulating adrenocorticotropic hormone (ACTH) concentration. Subclinical cortisol hypersecretion, irrespective of its ACTH dependency, does not manifest typical clinical phenotype of hypercortisolemia, and thus termed subclinical Cushing's syndrome...
August 16, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28811197/seasonal-changes-in-plasma-testosterone-and-cortisol-suggest-an-androgen-mediated-regulation-of-the-pituitary-adrenal-axis-in-the-tarabul-s-gerbil-gerbillus-tarabuli-thomas-1902
#4
Yamina Zatra, Naouel Aknoun-Sail, Arezki Kheddache, Abdelouafi Benmouloud, Salima Charallah, Elara N Moudilou, Jean-Marie Exbrayat, Farida Khammar, Zaina Amirat
In the desert gerbil Gerbillus tarabuli (Thomas, 1902), cortisol is the main glucocorticosteroid produced by the adrenal glands. Plasma cortisol concentrations show highest values when testosterone is reduced and lowest values during the breeding season which occurs from early winter to late spring. In order to specify the implication of testicular androgens in these corticosteroid seasonal variations we investigated the effects induced by gonadectomy performed during the breeding season on the pituitary adrenal axis...
August 12, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28795359/the-diagnostics-of-human-steroid-hormone-disorders
#5
Małgorzata Dobosz, Aneta Manda-Handzlik, Beata Pyrżak, Urszula Demkow
Disturbances of the steroidogenesis or altered peripheral metabolism of steroids may result in severe clinical manifestations. Therefore, prompt diagnosis and initiation of medical treatment are desirable. The diagnostics of disorders of steroid hormone production, metabolism, and action have been previously based on immunoassay tests. However, in a modern medical laboratory, due to low accuracy of immunoassays, this technique is continuously replaced by chromatographic separation methods coupled to mass spectrometric detection systems...
August 10, 2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28794862/case-report-an-incidentaloma-that-catches-your-eye-adrenal-myelolipoma
#6
Rosanna D'Addosio, Joselyn Rojas, Valmore Bermúdez, Flor Ledesma, Kyle Hoedebecke
Background: Adrenal incidentaloma refers to the incidental finding of a tumor in the adrenal gland, where nonfunctional forms are the most common variant. Myelolipoma is a rare (0.08-0.4%) occurrence characterized by adipose and hematopoietic tissue. The aim of this case report is to describe the diagnosis and appropriate management of a myelolipoma in an asymptomatic patient, which was originally considered an incidental hepatic hemangioma prior to being identified as a giant adrenal adenoma. Case description: The patient was a 54 year old obese female with a recent diagnosis of diabetes type II and dyslipidemia with recent ultrasound imaging suggestive of a hepatic hemangioma...
2017: F1000Research
https://www.readbyqxmd.com/read/28782322/congenital-adrenal-hyperplasia-with-11-beta-hydroxylase-deficiency-with-testicular-adrenal-rest-tumour
#7
Archana Sonawale, Anjali Rajadhyaksha, Siddharth Warrier, Rohit Shriwastav, Nilakshi H Sabnis
Congenital adrenal hyperplasia refers to the non-malignant enlargement of adrenal gland tissue as a result of deficiency of one of several enzymes involved in adrenal hormone synthesis, secondary to a genetic mutation. 11 - Beta hydroxylase is one such enzyme, and its deficiency is a rare cause of Congenital Adrenal Hyperplasia. We describe the case of an 18-year old man who presented to us with an acute right ganglio-capsular bleed, hypertension and bilateral scrotal swelling. Investigations revealed hypokalemia, and normal renal and cardiac functions...
June 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28757434/adrenal-responses-of-large-whales-integrating-fecal-aldosterone-as-a-complementary-biomarker-to-glucocorticoids
#8
Elizabeth A Burgess, Kathleen E Hunt, Scott D Kraus, Rosalind M Rolland
Until now, physiological stress assessment of large whales has predominantly focused on adrenal glucocorticoid (GC) measures. Elevated GC concentrations in feces (fGC) are known to reflect stressful disturbances, such as fishing gear entanglement and human-generated underwater noise, in North Atlantic right whales (Eubalaena glacialis). However, there can be considerable variation in GC production as a function of sex and life history stage, which may confound the interpretation of fGC levels. Additionally, GC antibodies used in immunoassays can cross-react with other fecal metabolites (i...
July 27, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28737969/high-hydrostatic-pressure-extract-of-ginger-exerts-antistress-effects-in-immobilization-stressed-rats
#9
Sohee Moon, Mak-Soon Lee, Sunyoon Jung, Bori Kang, Seog-Young Kim, Seonyoung Park, Hye-Yeon Son, Chong-Tai Kim, Young-Hee Jo, In-Hwan Kim, Young Soon Kim, Yangha Kim
Stress contributes to physiological changes such as weight loss and hormonal imbalances. The aim of the present study was to investigate antistress effects of high hydrostatic pressure extract of ginger (HPG) in immobilization-stressed rats. Male Sprague-Dawley rats (n = 24) were divided into three groups as follows: control (C), immobilization stress (2 h daily, for 2 weeks) (S), and immobilization stress (2 h daily, for 2 weeks) plus oral administration of HPG (150 mg/kg body weight/day) (S+G). Immobilization stress reduced the body weight gain and thymus weight by 50...
July 24, 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/28736286/lack-of-immunotoxic-effects-of-repeated-exposure-to-atrazine-associated-with-the-adaptation-of-adrenal-gland-activation
#10
Chad D Foradori, Arthur D Zimmerman, Pragati S Coder, Vanessa L Peachee, Robert J Handa, Ian Kimber, Stephen B Pruett, Charles B Breckenridge
T cell-dependent IgM antibody production and natural killer cell (NKC) activity were assessed in SD rats orally administered atrazine for 28 days to males (0, 6.5, 25, or 100 mg/kg/day) or females (0, 3, 6, or 50 mg/kg/day), or 30 or 500 ppm in diet (3 or 51 mg/kg/day). Anti-asialo GM1 antibodies (NKC) and cyclophosphamide (antibody-forming cell assay [AFC]) served as positive controls. Pituitary (ACTH, prolactin), adrenal (corticosterone, progesterone, aldosterone), and gonadal (androgens, estrogens) hormones were assessed after 1, 7, and/or 28 days of treatment...
July 20, 2017: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/28729436/regulation-of-adrenal-and-ovarian-steroidogenesis-by-mir-132
#11
Zhigang Hu, Wen-Jun Shen, Fredric B Kraemer, Salman Azhar
miR-132 is hormonally regulated in steroidogenic cells of the adrenal gland, ovary and testis. Here, we examined the potential role of miR-132 in the control of steroidogenesis. Transfection of Y1 adrenal cells with miR-132 increased mRNAs of 3β-HSD and 20α-HSD enzymes, which catalyze the sequential conversion of pregnenolone to progesterone to biologically inactive 20α-OHP. Overexpression of miR-132 reduced MeCP2 and StAR protein expression, basal progestin (progesterone and 20α-OHP) production, but enhanced their production in response to cAMP stimulation...
July 20, 2017: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/28728007/direct-immune-detection-of-cortisol-by-chemiresistor-graphene-oxide-sensor
#12
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/28721131/adrenopause-does-it-really-exist
#13
REVIEW
Lucyna Papierska
In ageing human adrenal glands there occur some morphological changes which result in alterations of their cortex endocrine function. Glucocorticoid-excreting cells in the zona glomerulosa live longer than androgen-producing cells in the zona reticularis, which undergo significant apoptosis. Therefore, in elderly humans cortisol levels are normal (significantly higher than at young age), while adrenal androgen concentrations decline with ageing. Function of the zona glomerulosa is affected by the adrenal status, circulatory system condition, efficiency of the kidneys and liver and medication...
June 2017: Przeglad Menopauzalny, Menopause Review
https://www.readbyqxmd.com/read/28716938/dynamic-responses-of-the-adrenal-steroidogenic-regulatory-network
#14
Francesca Spiga, Eder Zavala, Jamie J Walker, Zidong Zhao, John R Terry, Stafford L Lightman
The hypothalamic-pituitary-adrenal axis is a dynamic system regulating glucocorticoid hormone synthesis in the adrenal glands. Many key factors within the adrenal steroidogenic pathway have been identified and studied, but little is known about how these factors function collectively as a dynamic network of interacting components. To investigate this, we developed a mathematical model of the adrenal steroidogenic regulatory network that accounts for key regulatory processes occurring at different timescales...
August 1, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28713603/adrenal-ganglioneuroblastoma-in-adults-a-case-report-and-review-of-the-literature
#15
Stefano Benedini, Giorgia Grassi, Carmen Aresta, Antonietta Tufano, Luca Fabio Carmignani, Barbara Rubino, Livio Luzi, Sabrina Corbetta
Incidentally discovered adrenal masses are very common given the increased number of imaging studies performed in recent years. We here report a clinical case of a 20-year-old woman who presented with left flank pain. Ultrasound examination revealed a contralateral adrenal mass, which was confirmed at computed tomography (CT) scan. Hormonal hypersecretion was excluded. Given the size (11 × 10 × 7 cm) and the uncertain nature of the mass, it was surgically removed and sent for pathological analyses. Conclusive diagnosis was ganglioneuroblastoma...
2017: Case Reports in Endocrinology
https://www.readbyqxmd.com/read/28713097/-drug-induced-changes-in-adrenal-cortex-function
#16
Robert Krysiak, Karolina Kowalcze, Bogusław Okopień
Glucocorticoids, commonly used in the treatment of various disorders, particularly if administered at high doses, may lead to the development of iatrogenic Cushing's syndrome, being by far the most common iatrogenic disorder of the adrenal gland. In some cases, however, adrenal cortex function may be affected by other drugs and risk of the development of various clinical entities is dependent on the drug, its dose, as well as on the duration of the treatment. This risk is also related to the baseline function of this gland...
2017: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28707538/adrenal-cortical-hyperplasia-diagnostic-workup-subtypes-imaging-features-and-mimics
#17
Michelle Agrons, Corey T Jensen, Mouhammed Amir Habra, Christine O Menias, Akram M Shaaban, Nicolaus A Wagner-Bartak, Alicia M Roman-Colon, Khaled M Elsayes
Adrenal cortical hyperplasia manifests radiologically as the nonmalignant growth, or enlargement of the adrenal glands, specifically the cortex, although the cortex cannot be definitively identified by conventional imaging. Controlled by the pituitary gland, the adrenal cortex drives critical processes, such as cortisol, mineralocorticoid, and sex hormone production. Any disruption in the multiple enzymes and hormones involved in these pathways may cause serious or life-threatening symptoms, often associated with anatomical changes of the adrenal glands...
July 14, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28689073/endocrine-related-adverse-events-associated-with-immune-checkpoint-blockade-and-expert-insights-on-their-management
#18
REVIEW
Mario Sznol, Michael A Postow, Marianne J Davies, Anna C Pavlick, Elizabeth R Plimack, Montaser Shaheen, Colleen Veloski, Caroline Robert
Agents that modulate immune checkpoint proteins, such as cytotoxic T-lymphocyte antigen-4 (CTLA-4) and programmed death receptor-1 (PD-1), have become a mainstay in cancer treatment. The clinical benefit afforded by immune checkpoint inhibitors can be accompanied by immune-related adverse events (irAE) that affect the skin, gastrointestinal tract, liver, and endocrine system. The types of irAEs associated with immune checkpoint inhibitors are generally consistent across tumor types. Immune-related endocrine events can affect the pituitary, thyroid, and adrenal glands, as well as other downstream target organs...
July 2017: Cancer Treatment Reviews
https://www.readbyqxmd.com/read/28684471/multipotent-peripheral-glial-cells-generate-neuroendocrine-cells-of-the-adrenal-medulla
#19
Alessandro Furlan, Vyacheslav Dyachuk, Maria Eleni Kastriti, Laura Calvo-Enrique, Hind Abdo, Saida Hadjab, Tatiana Chontorotzea, Natalia Akkuratova, Dmitry Usoskin, Dmitry Kamenev, Julian Petersen, Kazunori Sunadome, Fatima Memic, Ulrika Marklund, Kaj Fried, Piotr Topilko, Francois Lallemend, Peter V Kharchenko, Patrik Ernfors, Igor Adameyko
Adrenaline is a fundamental circulating hormone for bodily responses to internal and external stressors. Chromaffin cells of the adrenal medulla (AM) represent the main neuroendocrine adrenergic component and are believed to differentiate from neural crest cells. We demonstrate that large numbers of chromaffin cells arise from peripheral glial stem cells, termed Schwann cell precursors (SCPs). SCPs migrate along the visceral motor nerve to the vicinity of the forming adrenal gland, where they detach from the nerve and form postsynaptic neuroendocrine chromaffin cells...
July 7, 2017: Science
https://www.readbyqxmd.com/read/28671496/effects-of-oral-megestrol-acetate-administration-on-the-hypothalamic-pituitary-adrenal-axis-of-male-bottlenose-dolphins-tursiops-truncatus
#20
Dorian S Houser, Cory D Champagne, Eric D Jensen, Cynthia R Smith, Lara S Cotte, Jenny M Meegan, Rebecca K Booth, Samuel K Wasser
OBJECTIVE To evaluate the impact of oral megestrol acetate (MA) administration on adrenal function in male bottlenose dolphins (Tursiops truncatus). DESIGN Serial cross-sectional study. ANIMALS 8 adult male dolphins, all of which were receiving MA at various daily doses (range, 0 to 60 mg, PO) for the control of reproductive behavior. PROCEDURES Blood samples were collected every 2 weeks for 1 year from dolphins trained to voluntarily provide them. Cortisol, ACTH, and other hormone concentrations were measured in serum or plasma via radioimmunoassay or ELISA...
July 15, 2017: Journal of the American Veterinary Medical Association
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