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Gastrointestinal hormone

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https://www.readbyqxmd.com/read/29761230/ghrelin-receptor-signaling-targets-segregated-clusters-of-neurons-within-the-nucleus-of-the-solitary-tract
#1
María Paula Cornejo, Pablo Nicolás De Francesco, Guadalupe García Romero, Enrique L Portiansky, Jeffrey M Zigman, Mirta Reynaldo, Mario Perello
Ghrelin is a stomach-derived hormone that regulates a variety of biological functions such as food intake, gastrointestinal function and blood glucose metabolism, among others. Ghrelin acts via the growth hormone secretagogue receptor (GHSR), a G-protein-coupled receptor located in key brain areas that mediate specific actions of the hormone. GHSR is highly expressed in the nucleus of the solitary tract (NTS), which is located in the medulla oblongata and controls essential functions, including orofacial, autonomic, neuroendocrine and behavioral responses...
May 14, 2018: Brain Structure & Function
https://www.readbyqxmd.com/read/29741675/the-intestinotrophic-effects-of-glucagon-like-peptide-2-glp-2-in-relation-to-intestinal-neoplasia
#2
Adile Orhan, Ismail Gögenur, Hannelouise Kissow
Context: Glucagon-like peptide-2 (GLP-2) is a gastrointestinal hormone with intestinotrophic and anti-apoptotic effects. The hormone's therapeutic potential in intestinal diseases and relation to intestinal neoplasia have raised great interest among researchers. This paper reviews and discusses published experimental and clinical studies concerning the growth-stimulating and anti-apoptotic effects of GLP-2 in relation to intestinal neoplasia. Evidence acquisition: The data used in this narrative review were collected through literature research in PubMed using English keywords...
May 7, 2018: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29736148/the-pre-treatment-characteristics-and-evaluation-of-the-effects-of-recombinant-human-growth-hormone-therapy-in-children-with-growth-hormone-deficiency-and-celiac-disease-or-inflammatory-bowel-disease
#3
Ewelina Witkowska-Sędek, Dominika Labochka, Anna Majcher, Beata Pyrżak
The aim of the study: was to investigate the coincidence of growth hormone deficiency (GHD) and celiac disease (CD) or inflammatory bowel disease (IBD) in patients referred for short stature, and to evaluate the baseline anthropometric parameters and the effectiveness of recombinant human growth hormone (rhGH) therapy in the first year in those patients (GHD+CD/IBD subgroup) in comparison to patients with GHD without CD or IBD (GHD-CD/IBD subgroup). Material and methods: The study was retrospective and included 2196 short patients (height SDS [Standard Deviation Score] ≤ -1...
2018: Central-European Journal of Immunology
https://www.readbyqxmd.com/read/29735582/thyroid-hormones-are-transport-substrates-and-transcriptional-regulators-of-organic-anion-transporting-polypeptide-2b1
#4
Henriette E Meyer Zu Schwabedissen, Celio Ferreira, Anima M Schaefer, Mouhssin Oufir, Isabell Seibert, Matthias Hamburger, Rommel G Tirona
Levothyroxine replacement therapy forms the cornerstone of hypothyroidism management. Variability in levothyroxine oral absorption may contribute to the well-recognized large interpatient differences in required dose. Moreover, levothyroxine-drug pharmacokinetic interactions are thought to be caused by altered oral bioavailability. Interestingly, little is known regarding the mechanisms contributing to levothyroxine absorption in the gastrointestinal tract. Here, we aimed to determine whether the intestinal drug uptake transporter Organic Anion Transporting Polypeptide 2B1 (OATP2B1) may be involved in facilitating intestinal absorption of thyroid hormones...
May 7, 2018: Molecular Pharmacology
https://www.readbyqxmd.com/read/29731403/-bariatric-surgical-procedures
#5
Laurent Brunaud, Claire Nomine-Criqui, Thibaut Fouquet, Marie-Aude Sirveaux, Nicolas Reibel, Didier Quilliot
Obesity physioptahology is complex and involves several factors (genetic, behavioral, psychological…). In this still undefined context, bariatric surgery modifies gastrointestinal tract anatomy, reduces the caloric intake and modifies gastrointestinal hormonal secretions for some of them. Aim of this work was to describe bariatric surgical procedures (sleeve, gastric band, short-gastric gastric, biliopancreatic diversion), specifying their historical context and considering possible evolutions.
May 3, 2018: La Presse Médicale
https://www.readbyqxmd.com/read/29730732/mechanisms-underlying-the-weight-loss-effects-of-rygb-and-sg-similar-yet-different
#6
REVIEW
A Pucci, R L Batterham
The worldwide obesity epidemic continues unabated, adversely impacting upon global health and economies. People with severe obesity suffer the greatest adverse health consequences with reduced life expectancy. Currently, bariatric surgery is the most effective treatment for people with severe obesity, resulting in marked sustained weight loss, improved obesity-associated comorbidities and reduced mortality. Sleeve gastrectomy (SG) and Roux-en-Y gastric bypass (RYGB), the most common bariatric procedures undertaken globally, engender weight loss and metabolic improvements by mechanisms other than restriction and malabsorption...
May 5, 2018: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/29724491/clinical-presentation-of-a-complex-neurodevelopmental-disorder-caused-by-mutations-in-adnp
#7
Anke Van Dijck, Anneke T Vulto-van Silfhout, Elisa Cappuyns, Ilse M van der Werf, Grazia M Mancini, Andreas Tzschach, Raphael Bernier, Illana Gozes, Evan E Eichler, Corrado Romano, Anna Lindstrand, Ann Nordgren, Malin Kvarnung, Tjitske Kleefstra, Bert B A de Vries, Sébastien Küry, Jill A Rosenfeld, Marije E Meuwissen, Geert Vandeweyer, R Frank Kooy
BACKGROUND: In genome-wide screening studies for de novo mutations underlying autism and intellectual disability, mutations in the ADNP gene are consistently reported among the most frequent. ADNP mutations have been identified in children with autism spectrum disorder comorbid with intellectual disability, distinctive facial features, and deficits in multiple organ systems. However, a comprehensive clinical description of the Helsmoortel-Van der Aa syndrome is lacking. METHODS: We identified a worldwide cohort of 78 individuals with likely disruptive mutations in ADNP from January 2014 to October 2016 through systematic literature search, by contacting collaborators, and through direct interaction with parents...
March 15, 2018: Biological Psychiatry
https://www.readbyqxmd.com/read/29722834/effects-of-caloric-and-noncaloric-sweeteners-on-antroduodenal-motility-gastrointestinal-hormone-secretion-and-appetite-related-sensations-in-healthy-subjects
#8
Anne Christin Meyer-Gerspach, Jessica R Biesiekierski, Eveline Deloose, Egbert Clevers, Alessandra Rotondo, Jens F Rehfeld, Inge Depoortere, Lukas Van Oudenhove, Jan Tack
Background: Activation of gastrointestinal (GI) sweet taste receptors by caloric sweeteners triggers secretion of anorexigenic and inhibition of orexigenic GI hormones to regulate food intake. The effect of noncaloric sweeteners on these mechanisms is controversial. We have recently shown that motilin-induced gastric phase III contractions signal hunger feelings, thereby identifying GI motility, and its regulatory hormone motilin, as novel players in food intake regulation. Objective: The objective of the present study was to determine the effect of caloric and noncaloric sweeteners on GI motility, GI hormone secretion, and hunger in humans...
May 1, 2018: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29720834/comparison-of-bran-processed-and-crude-atractylodes-lancea-effects-on-spleen-deficiency-syndrome-in-rats
#9
Dong-Hua Xue, Yu-Qiang Liu, Qian Cai, Ke Liang, Bing-Yuan Zheng, Fang-Xiao Li, Xue Pang
Background: The rhizome of Atractylodes lancea (AL) is usually used for the treatment of various diseases such as spleen deficiency syndrome (SDS). Both bran-processed and crude AL is included in Chinese Pharmacopoeia. The different efficacies of bran-processed and crude AL on SDS are largely unknown, and the mechanisms of AL effects have not been fully elucidated. Objective: The objective of the study was to compare the effects of bran-processed and crude AL and then assess the mechanisms of treating SDS...
April 2018: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29717927/food-intake-and-eating-behavior-after-bariatric-surgery
#10
Werd Al-Najim, Neil G Docherty, Carel W le Roux
Obesity is an escalating global chronic disease. Bariatric surgery is a very efficacious treatment for obesity and its comorbidities. Alterations to gastrointestinal anatomy during bariatric surgery result in neurological and physiological changes affecting hypothalamic signaling, gut hormones, bile acids, and gut microbiota, which coalesce to exert a profound influence on eating behavior. A thorough understanding of the mechanisms underlying eating behavior is essential in the management of patients after bariatric surgery...
July 1, 2018: Physiological Reviews
https://www.readbyqxmd.com/read/29715154/radiotherapy-plus-total-androgen-block-versus-radiotherapy-plus-lhrh-analog-monotherapy-for-non-metastatic-prostate-cancer
#11
Giulia Marvaso, Anna Viola, Cristiana Fodor, Barbara A Jereczek-Fossa
BACKGROUND/AIM: Patients with locally advanced prostate cancer are generally treated with radiotherapy (RT) which can be combined with hormonal therapy. RT plus monotherapy with luteinizing hormone-releasing hormone (LHRH) analog triptorelin was compared to RT plus total androgen block (TAB). PATIENTS AND METHODS: A retrospective study was carried out on patients with locally advanced prostate cancer comparing RT plus monotherapy versus RT plus TAB. RESULTS: For overall survival, no differences between patients receiving RT with monotherapy and those treated with TAB were observed...
May 2018: Anticancer Research
https://www.readbyqxmd.com/read/29691526/black-pepper-based-beverage-induced-appetite-suppressing-effects-without-altering-postprandial-glycaemia-gut-and-thyroid-hormones-or-gastrointestinal-well-being-a-randomized-crossover-study-in-healthy-subjects
#12
Yoghatama Cindya Zanzer, Merichel Plaza, Anestis Dougkas, Charlotta Turner, Elin Östman
Pleiotropic effects of spices on health, particularly on glucose metabolism and energy regulation, deserve further clinical investigation into their efficacy. The aim of the current study was to evaluate whether consumption of a black pepper-based beverage (BPB) preload containing 20 mg gallic acid equivalent (GAE) would exert any effect on postprandial glycaemia, appetite sensations, gut hormones, thyroid function, and gastrointestinal well-being after a white wheat bread (WWB) challenge meal containing 50 g available carbohydrates (CHO) compared to a control beverage...
April 25, 2018: Food & Function
https://www.readbyqxmd.com/read/29682542/gut-microbial-changes-interactions-and-their-implications-on-human-lifecycle-an-ageing-perspective
#13
REVIEW
Ravichandra Vemuri, Rohit Gundamaraju, Madhur D Shastri, Shakti Dhar Shukla, Krishnakumar Kalpurath, Madeleine Ball, Stephen Tristram, Esaki M Shankar, Kiran Ahuja, Rajaraman Eri
Gut microbiota is established during birth and evolves with age, mostly maintaining the commensal relationship with the host. A growing body of clinical evidence suggests an intricate relationship between the gut microbiota and the immune system. With ageing, the gut microbiota develops significant imbalances in the major phyla such as the anaerobic Firmicutes and Bacteroidetes as well as a diverse range of facultative organisms, resulting in impaired immune responses. Antimicrobial therapy is commonly used for the treatment of infections; however, this may also result in the loss of normal gut flora...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29674959/meal-sensing-signaling-pathways-in-functional-dyspepsia
#14
REVIEW
Amanda J Page, Hui Li
The upper gastrointestinal tract plays an important role in sensing the arrival, amount and chemical composition of a meal. Ingestion of a meal triggers a number of sensory signals in the gastrointestinal tract. These include the response to mechanical stimulation (e.g., gastric distension), from the presence of food in the gut, and the interaction of various dietary nutrients with specific "taste" receptors on specialized enteroendocrine cells in the small intestine culminating in the release of gut hormones...
2018: Frontiers in Systems Neuroscience
https://www.readbyqxmd.com/read/29673577/profiling-of-g-protein-coupled-receptors-in-vagal-afferents-reveals-novel-gut-to-brain-sensing-mechanisms
#15
Kristoffer L Egerod, Natalia Petersen, Pascal N Timshel, Jens C Rekling, Yibing Wang, Qinghua Liu, Thue W Schwartz, Laurent Gautron
OBJECTIVES: G protein-coupled receptors (GPCRs) act as transmembrane molecular sensors of neurotransmitters, hormones, nutrients, and metabolites. Because unmyelinated vagal afferents richly innervate the gastrointestinal mucosa, gut-derived molecules may directly modulate the activity of vagal afferents through GPCRs. However, the types of GPCRs expressed in vagal afferents are largely unknown. Here, we determined the expression profile of all GPCRs expressed in vagal afferents of the mouse, with a special emphasis on those innervating the gastrointestinal tract...
April 3, 2018: Molecular Metabolism
https://www.readbyqxmd.com/read/29672153/p21-activated-kinase4-in-pancreatic-acini-is-activated-by-gi-hormones-growth-factors-by-novel-signaling-and-is-needed-to-stimulate-secretory-growth-cascades
#16
Irene Ramos-Alvarez, Robert T Jensen
p21-activated kinases(PAKs) are highly conserved serine/threonine protein kinases, which are divided into two groups:Group-I(PAKs1-3) and Group-II(PAKs4-6). In various tissues, Group-II PAKs play important roles in cytoskeletal dynamics, cell growth as well as neoplastic development/progression. However, little is known about Group-II PAKs role in a number of physiological events including their ability to be activated by gastrointestinal(GI) hormones/neurotransmitters/growth-factors(GFs). We used rat pancreatic acini to explore the ability of GI-hormones/neurotransmitters/GFs to activate Group-II-PAKs and the signaling cascades involved...
April 19, 2018: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/29670354/inhibitory-effect-of-the-kampo-medicinal-formula-yokukansan-on-acute-stress-induced-defecation-in-rats
#17
Yasuaki Kanada, Ayami Katayama, Hideshi Ikemoto, Kana Takahashi, Mana Tsukada, Akio Nakamura, Shogo Ishino, Tadashi Hisamitsu, Masataka Sunagawa
Objectives: Irritable bowel syndrome (IBS) is a functional gastrointestinal disorder with symptoms of abnormal defecation and abdominal discomfort. Psychological factors are well known to be involved in onset and exacerbation of IBS. A few studies have reported effectiveness of traditional herbal (Kampo) medicines in IBS treatment. Yokukansan (YKS) has been shown to have anti-stress and anxiolytic effects. We investigated the effect of YKS on defecation induced by stress and involvement of oxytocin (OT), a peptide hormone produced by the hypothalamus, in order to elucidate the mechanism of YKS action...
2018: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/29662934/bevacizumab-for-refractory-gastrointestinal-bleeding-in-rendu-osler-weber-disease
#18
Carlos Bernardes, Sara Santos, Rafaela Loureiro, Verónica Borges, Gonçalo Ramos
Rendu-Osler-Weber disease, also known as hereditary hemorrhagic telangiectasia, is a rare autosomal dominant disorder which is often characterized by recurrent epistaxis, mucocutaneous and gastrointestinal telangiectasias, and visceral arteriovenous malformations. Patients with gastrointestinal involvement can present with a wide spectrum of severity, which may vary from uncomplicated iron deficiency anemia to continuous and refractory bleeding. We present the case of a 62-year-old female, who was admitted with anemia following several episodes of melena, and whose endoscopic examination revealed multiple angiodysplasias in the stomach and small bowel...
March 2018: GE Portuguese Journal of Gastroenterology
https://www.readbyqxmd.com/read/29659867/gastric-emptying-impacts-the-timing-of-meal-glucose-peak-on-subjects-with-uncomplicated-type-1-diabetes
#19
Roberta Lupoli, Annalisa Creanza, Ettore Griffo, Gerardo Nardone, Alba Rocco, Lutgarda Bozzetto, Giovanni Annuzzi, Gabriele Riccardi, Brunella Capaldo
Context: Diabetes mellitus (DM) is associated with gastrointestinal (GI) motility dysfunction, ranging from delayed to accelerated gastric emptying (GE). Objective: To evaluate GE in type 1 DM (T1DM) patients without chronic complications and to investigate its relation with postprandial glucose and GI hormones responses. Design: Cross-sectional study. Setting/Participants: Forty-two T1DM patients free of chronic complications referred to "Federico II" University and 31 healthy controls comparable for age, gender and BMI...
April 11, 2018: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29656116/chromogranin-a-and-its-derived-peptides-and-their-pharmacological-effects-during-intestinal-inflammation
#20
REVIEW
Nour Eissa, Hayam Hussein, Geoffrey N Hendy, Charles N Bernstein, Jean-Eric Ghia
The gastrointestinal tract is the largest endocrine organ that produces a broad range of active peptides. Mucosal changes during inflammation alter the distribution and products of enteroendocrine cells (EECs) that play a role in immune activation and regulation of gut homeostasis by mediating communication between the nervous, endocrine and immune systems. Patients with inflammatory bowel disease (IBD) typically have altered expression of chromogranin (CHG)-A (CHGA), a major soluble protein secreted by EECs that functions as a pro-hormone...
April 12, 2018: Biochemical Pharmacology
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