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Glucocorticoid deficiency

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https://www.readbyqxmd.com/read/28878025/gallbladder-derived-surfactant-protein-d-regulates-gut-commensal-bacteria-for-maintaining-intestinal-homeostasis
#1
Hana Sarashina-Kida, Hideo Negishi, Junko Nishio, Wataru Suda, Yuki Nakajima, Mika Yasui-Kato, Keiko Iwaisako, Sujin Kang, Nobuyasu Endo, Hideyuki Yanai, Masataka Asagiri, Hiroshi Kida, Masahira Hattori, Atsushi Kumanogoh, Tadatsugu Taniguchi
The commensal microbiota within the gastrointestinal tract is essential in maintaining homeostasis. Indeed, dysregulation in the repertoire of microbiota can result in the development of intestinal immune-inflammatory diseases. Further, this immune regulation by gut microbiota is important systemically, impacting health and disease of organ systems beyond the local environment of the gut. What has not been explored is how distant organs might in turn shape the microbiota via microbe-targeted molecules. Here, we provide evidence that surfactant protein D (SP-D) synthesized in the gallbladder and delivered into intestinal lumen binds selectively to species of gut commensal bacteria...
September 6, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28875366/saikosaponin-d-relieves-unpredictable-chronic-mild-stress-induced-depressive-like-behavior-in-rats-involvement-of-hpa-axis-and-hippocampal-neurogenesis
#2
Hong-Yan Li, Ying-Hua Zhao, Min-Jie Zeng, Fang Fang, Min Li, Ting-Ting Qin, Lu-Yu Ye, Hong-Wei Li, Rong Qu, Shi-Ping Ma
RATIONALE: Saikosaponin D (SSD), a major bioactive component isolated from Radix Bupleuri, has been reported to exert neuroprotective properties. OBJECTIVES: The present study was designed to investigate the anti-depressant-like effects and the potential mechanisms of SSD. METHODS: Behavioural tests including sucrose preference test (SPT), open field test (OFT) and forced swim test (FST) were performed to study the antidepressant-like effects of SSD...
September 5, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28855330/membrane-associated-effects-of-glucocorticoid-on-bace1-upregulation-and-a%C3%AE-generation-involvement-of-lipid-raft-mediated-creb-activation
#3
Gee Euhn Choi, Sei-Jung Lee, Hyun Jik Lee, So Hee Ko, Chang Woo Chae, Ho Jae Han
Glucocorticoid has been widely accepted to induce Alzheimer's disease, but the nongenomic effect of glucocorticoid on amyloid β (Aβ) generation has yet to be studied. Here, we investigated the effect of the nongenomic pathway induced by glucocorticoid on amyloid precursor protein processing enzymes as well as Aβ production using male ICR mice and human neuroblastoma SK-N-MC cells. Mice groups exposed to restraint stress or intracerebroventricular injection of Aβ showed impaired cognition, decreased intracellular glucocorticoid receptor (GR) level, but elevated level of membrane GR (mGR)...
August 30, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28819780/preliminary-research-on-syndrome-types-of-chinese-medicine-in-children-with-primary-nephrotic-syndrome
#4
Wen Sun, Jian Yu, Gu-Lan Zeng, Bing-Feng Zhang
OBJECTIVE: To provide an objective reference for the syndrome types of Chinese medicine (CM) associated with pediatric primary nephrotic syndrome (PNS). METHODS: A cross-sectional study was performed. Data on clinical symptoms, CM syndrome types, biochemical indices, and medications used were collected from 98 children with PNS. Then, the correlation between CM syndromes and biochemical indices, as well as medications used, was analyzed. RESULTS: The four most common symptoms in children with PNS were brown urine, red tongue, excessive sweating, and swelling of the face and limbs...
August 17, 2017: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/28815318/-adrenal-crisis
#5
REVIEW
S Burger-Stritt, S Hahner
Patients with chronic adrenal insufficiency suffer from reduced quality of life and increased mortality. An association between mortality and adrenal crisis is assumed. The frequency of adrenal crisis is about 8/100 patient years. The main causes are infectious disease. Pathophysiology is poorly understood to date. An association with an exaggerated inflammatory response due to a lack of glucocorticoid modulation as well as mineralocorticoid deficiency and diminished adrenomedullary function are discussed. The therapy of adrenal crisis includes prompt parenteral administration of hydrocortisone combined with isotonic saline...
August 16, 2017: Der Internist
https://www.readbyqxmd.com/read/28807145/a-benzothiadiazine-derivative-and-methylprednisolone-are-novel-and-selective-activators-of-transient-receptor-potential-canonical-5-trpc5-channels
#6
Holger Beckmann, Julia Richter, Kerstin Hill, Nicole Urban, Horst Lemoine, Michael Schaefer
The transient receptor potential canonical channel 5 (TRPC5) is a Ca(2+)-permeable ion channel, which is predominantly expressed in the brain. TRPC5-deficient mice exhibit a reduced innate fear response and impaired motor control. In addition, outgrowth of hippocampal and cerebellar neurons is retarded by TRPC5. However, pharmacological evidence of TRPC5 function on cellular or organismic levels is sparse. Thus, there is still a need for identifying novel and efficient TRPC5 channel modulators. We, therefore, screened compound libraries and identified the glucocorticoid methylprednisolone and N-[3-(adamantan-2-yloxy)propyl]-3-(6-methyl-1,1-dioxo-2H-1λ(6),2,4-benzothiadiazin-3-yl)propanamide (BTD) as novel TRPC5 activators...
September 2017: Cell Calcium
https://www.readbyqxmd.com/read/28765225/b-cell-requirement-for-robust-regulatory-t-cell-responses-to-friend-retrovirus-infection
#7
Tyler C Moore, Lorena M Gonzaga, Jennifer M Mather, Ronald J Messer, Kim J Hasenkrug
Regulatory T cells (Tregs) are immunosuppressive cells of the immune system that control autoimmune reactivity. Tregs also respond during immune reactions to infectious agents in order to limit immunopathological damage from potent effectors such as CD8(+) cytolytic T lymphocytes. We have used the Friend virus (FV) model of retroviral infection in mice to investigate how viral infections induce Tregs. During acute FV infection, there is significant activation and expansion of thymus-derived (natural) Tregs that suppress virus-specific CD8(+) T cell responses...
August 1, 2017: MBio
https://www.readbyqxmd.com/read/28765037/vitamin-d-effects-on-monocytes%C3%AC-ccl-2-il6-and-cd14-transcription-in-addison-s-disease-and-hla-susceptibility
#8
A U Kraus, M Penna-Martinez, G Meyer, K Badenhoop
Addisońs disease is a rare autoimmune disorder leading to adrenal insufficiency and life-long glucocorticoid dependency. Vitamin D receptor (VDR) polymorphisms and vitamin D deficiency predispose to Addisońs disease. Aim of the current study was, to investigate potential anti-inflammatory vitamin D effects on monocytes in Addisońs disease, focusing on inflammatory CCL-2 and IL6, as well on monocyte CD14 markers. Addisońs disease is genetically linked to distinct HLA susceptibility alleles. Therefore we analyzed, whether HLA genotypes differed for vitamin D effects on monocyte markers...
July 29, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28750490/secondary-adrenal-insufficiency-from-the-physiopathology-to-the-possible-role-of-modified-release-hydrocortisone-treatment
#9
Rosa M Paragliola, Salvatore M Corsello
Central adrenal insufficiency represents a life-threatening disorder that results from a reduced cortisol production due to an impairment production of adrenocorticotropic hormone. In particular, secondary AI results from pituitary disease that impedes the release of ACTH, while tertiary adrenal insufficiency is caused from an impaired synthesis of corticotropin-releasing hormone. Central adrenal insufficiency has an estimated prevalence of 150-280 per million, resulting more common than primary AI. Prompt diagnosis and management of this condition is crucial, but the diagnostic investigation can often be challenging, in particular in cases of recent onset of secondary adrenal insufficiency...
July 27, 2017: Minerva Endocrinologica
https://www.readbyqxmd.com/read/28747362/alterations-of-adrenal-steroidomic-profiles-in-preterm-infants-at-birth
#10
Simon Travers, Laetitia Martinerie, Pascal Boileau, Marc Lombès, Eric Pussard
OBJECTIVE: Preterm infants have relative adrenal and kidney immaturity. Recently, we linked their urine sodium loss to a hypoaldosteronism at variance with an appropriate stimulation of the renin-angiotensin system. To investigate this defective aldosterone secretion, we analyse the biosynthesis pathways of adrenal steroids in neonates according to gestational age (GA). DESIGN: Multicentre study (Premaldo) including 152 neonates classified into three groups: group 1 (very preterm (VPT)): <33 ‰gestational weeks (GW); group 2 (preterm (PT)): 33-36 GW and group 3 (term (T)): ≥37 GW...
July 26, 2017: Archives of Disease in Childhood. Fetal and Neonatal Edition
https://www.readbyqxmd.com/read/28735612/cutaneous-glucocorticoidogenesis-and-cortisol-signaling-are-defective-in-psoriasis
#11
REVIEW
Andrzej T Slominski, Anna A Brożyna, Robert C Tuckey
Hannen et al. report that cutaneous glucocorticoidogenesis and expression of glucocorticoid receptors are inhibited in psoriatic skin. These findings substantiate the previous concept that deficient feedback of local proopiomelanocortin and glucocorticoids on cutaneous immunity contributes to inflammatory and autoimmune dermatoses. Restoration of efficient endogenous glucocorticoid signaling represents a realistic goal in treating psoriasis.
August 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28732839/exacerbations-and-duration-of-smoking-abstinence-are-associated-with-the-annual-loss-of-fev1-in-individuals-with-pizz-alpha-1-antitrypsin-deficiency
#12
Sebastian Fähndrich, Nikolas Bernhard, Philipp M Lepper, Claus Vogelmeier, Martina Seibert, Stefan Wagenpfeil, Robert Bals
BACKGROUND: Alpha-1-antitrypsin deficiency (AATD) is a genetic disorder that is associated with a higher risk of chronic obstructive pulmonary disease (COPD) and emphysema. The annual declines in lung function (FEV1) and transfer factor of the lung for carbon monoxide (TLCO) predict all-cause mortality. MATERIAL AND METHODS: We investigated the longitudinal follow-up data over 11 years (mean follow-up period of 4.89 years) from the German AATD registry and analyzed the relationship between annual loss of FEV1 and TLCO and sex, age, body mass index (BMI), nicotine consumption, occupational dust exposure, St...
August 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/28732066/inhibition-of-pulmonary-%C3%AE-carotene-15-15-oxygenase-expression-by-glucocorticoid-involves-ppar%C3%AE
#13
Xiaoming Gong, Raju Marisiddaiah, Lewis P Rubin
β-carotene 15,15'-oxygenase (BCO1) catalyzes the first step in the conversion of dietary provitamin A carotenoids to vitamin A. This enzyme is expressed in a variety of developing and adult tissues, suggesting that its activity may regulate local retinoid synthesis. Vitamin A and related compounds (retinoids) are critical regulators of lung epithelial development, integrity, and injury repair. A balance between the actions of retinoids and glucocorticoids (GCs) promotes normal lung development and, in particular, alveolarization...
2017: PloS One
https://www.readbyqxmd.com/read/28726773/t-cell-autonomous-death-induced-by-regeneration-of-inert-glucocorticoid-metabolites
#14
Lourdes Rocamora-Reverte, Holger M Reichardt, Andreas Villunger, GJan Wiegers
Glucocorticoids (GC) are essential regulators of T-cell development and function. Activation of the immune system increases systemic adrenal-derived GC levels which downregulate immune activity as part of a negative feedback control system. Increasing evidence shows, however, that GC can also be derived from extra-adrenal sources such as the thymus or intestine, thus providing local control of GC-mediated effects. The thymus reportedly produces GC, but whether thymic epithelial cells or thymocytes produce GC acting either in an autocrine or paracrine fashion is not clear...
July 20, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28679951/a-salt-sensing-kinase-in-t-lymphocytes-sgk1-drives-hypertension-and-hypertensive-end-organ-damage
#15
Allison E Norlander, Mohamed A Saleh, Arvind K Pandey, Hana A Itani, Jing Wu, Liang Xiao, Jooeun Kang, Bethany L Dale, Slavina B Goleva, Fanny Laroumanie, Liping Du, David G Harrison, Meena S Madhur
We previously showed that angiotensin II (Ang II) increases T cell production of IL-17A, and that mice deficient in IL-17A have blunted hypertension and attenuated renal and vascular dysfunction. It was recently shown that salt enhances IL-17A production from CD4+ T cells via a serum- and glucocorticoid-regulated kinase 1-dependent (SGK1-dependent) pathway. Thus, we tested the hypothesis that SGK1 signaling in T cells promotes hypertension and contributes to end-organ damage. We show that loss of T cell SGK1 results in a blunted hypertensive response to Ang II infusion by 25 mmHg...
July 6, 2017: JCI Insight
https://www.readbyqxmd.com/read/28676523/macrophage-11%C3%AE-hsd-1-deficiency-promotes-inflammatory-angiogenesis
#16
Zhenguang Zhang, Agnes E Coutinho, Tak Yung Man, Tiina M J Kipari, Patrick W F Hadoke, Donald M Salter, Jonathan R Seckl, Karen E Chapman
11β-Hydroxysteroid dehydrogenase-1 (11β-HSD1) predominantly converts inert glucocorticoids into active forms, thereby contributing to intracellular glucocorticoid levels. 11β-HSD1 is dynamically regulated during inflammation, including in macrophages where it regulates phagocytic capacity. The resolution of inflammation in some disease models including inflammatory arthritis is impaired by 11β-HSD1 deficiency or inhibition. However, 11β-HSD1 deficiency/inhibition also promotes angiogenesis, which is beneficial in mouse models of surgical wound healing, myocardial infarction or obesity...
September 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28666938/death-of-adrenocortical-cells-during-murine-acute-t-cruzi-infection-is-not-associated-with-tnf-r1-signaling-but-mostly-with-the-type-ii-pathway-of-fas-mediated-apoptosis
#17
Ana R Pérez, Flavia Lambertucci, Florencia B González, Eduardo A Roggero, Oscar A Bottasso, Juliana de Meis, Maria T Ronco, Silvina R Villar
Earlier studies from our laboratory demonstrated that acute experimental Trypanosoma cruzi infection promotes an intense inflammation along with a sepsis-like dysregulated adrenal response characterized by normal levels of ACTH with raised glucocorticoid secretion. Inflammation was also known to result in adrenal cell apoptosis, which in turn may influence HPA axis uncoupling. To explore factors and pathways which may be involved in the apoptosis of adrenal cells, together with its impact on the functionality of the gland, we carried out a series of studies in mice lacking death receptors, such as TNF-R1 (C57BL/6-(Tnfrsf1a tm1Imx) or TNF-R1(-/-)) or Fas ligand (C57BL/6 Fas-deficient lpr mice), undergoing acute T...
June 27, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28659593/a-quantitative-study-of-internal-and-external-interactions-of-homodimeric-glucocorticoid-receptor-using-fluorescence-cross-correlation-spectroscopy-in-a-live-cell
#18
Manisha Tiwari, Sho Oasa, Johtaro Yamamoto, Shintaro Mikuni, Masataka Kinjo
Glucocorticoid receptor (GRα) is a well-known ligand-dependent transcription-regulatory protein. The classic view is that unliganded GRα resides in the cytoplasm, relocates to the nucleus after ligand binding, and then associates with a specific DNA sequence, namely a glucocorticoid response element (GRE), to activate a specific gene as a homodimer. It is still a puzzle, however, whether GRα forms the homodimer in the cytoplasm or in the nucleus before DNA binding or after that. To quantify the homodimerization of GRα, we constructed the spectrally different fluorescent protein tagged hGRα and applied fluorescence cross-correlation spectroscopy...
June 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28650457/fibroblast-growth-factor-19-regulates-skeletal-muscle-mass-and-ameliorates-muscle-wasting-in-mice
#19
Bérengère Benoit, Emmanuelle Meugnier, Martina Castelli, Stéphanie Chanon, Aurélie Vieille-Marchiset, Christine Durand, Nadia Bendridi, Sandra Pesenti, Pierre-Axel Monternier, Anne-Cécile Durieux, Damien Freyssenet, Jennifer Rieusset, Etienne Lefai, Hubert Vidal, Jérôme Ruzzin
The endocrine-derived hormone fibroblast growth factor (FGF) 19 has recently emerged as a potential target for treating metabolic disease. Given that skeletal muscle is a key metabolic organ, we explored the role of FGF19 in that tissue. Here we report a novel function of FGF19 in regulating skeletal muscle mass through enlargement of muscle fiber size, and in protecting muscle from atrophy. Treatment with FGF19 causes skeletal muscle hypertrophy in mice, while physiological and pharmacological doses of FGF19 substantially increase the size of human myotubes in vitro...
August 2017: Nature Medicine
https://www.readbyqxmd.com/read/28638668/severe-short-stature-in-an-adolescent-male-with-prader-willi-syndrome-and-congenital-adrenal-hyperplasia-a-therapeutic-conundrum
#20
Meredith Wasserman, Erin M Mulvihill, Angela Ganan-Soto, Serife Uysal, Jose Bernardo Quintos
Congenital adrenal hyperplasia (CAH) due to 21-hydroxylase deficiency results in excess androgen production which can lead to early epiphyseal fusion and short stature. Prader-Willi syndrome (PWS) is a genetic disorder resulting from a defect on chromosome 15 due to paternal deletion, maternal uniparental disomy, or imprinting defect. Ninety percent of patients with PWS have short stature. In this article we report a patient with simple-virilizing CAH and PWS who was overtreated with glucocorticoids for CAH and not supplemented with growth hormone for PWS, resulting in a significantly short adult height...
2017: Case Reports in Endocrinology
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