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https://www.readbyqxmd.com/read/28430903/co-storage-of-enteroendocrine-hormones-evaluated-at-the-cell-and-subcellular-levels-in-male-mice
#1
Linda J Fothergill, Brid Callaghan, Billie Hunne, David M Bravo, John B Furness
Recent studies reveal complex patterns of hormone co-expression within enteroendocrine cells (EEC), contrary to the traditional view that gut hormones are expressed individually in EEC. Moreover, different hormones have been found in separate subcellular vesicles. However, detailed analysis of relative expression of multiple hormones has not been made. Subcellular studies have been confined to peptide hormones, and have not included the indolamine, 5-HT, or the neuroendocrine protein, chromogranin A (CgA). In the present work, co-expression of 5-HT, CgA, secretin, CCK, ghrelin, and GLP-1 in mouse duodenum was quantified at a cellular and subcellular level by semi-automated cell counting and quantitative vesicle measurements...
April 18, 2017: Endocrinology
https://www.readbyqxmd.com/read/28430116/ghrelin-expression-and-significance-in-92-patients-with-atrial-fibrillation
#2
Tianyi Ma, Yujiang Su, Shijuan Lu, Moshui Chen, Jianghua Zhong, Zhihong Zhou, Dingjun Sun, Hui Yang, Xue Ao
OBJECTIVE: Ghrelin is a polypeptide that is closely associated with many cardiovascular diseases, such as hypertension, atherosclerosis, and heart failure. This article aims to understand the expression of ghrelin in patients with atrial fibrillation (AF). METHODS: A total of 182 patients with non-valvular heart diseases were recruited, among whom 92 had AF and 90 had sinus arrhythmia (SA). The serum ghrelin amount was tested by the ELASA method. Moreover, blood sugar, lipids, liver function, and renal function were tested...
April 10, 2017: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/28430078/monoclonal-antibody-5c9h2-against-human-ghrelin-receptor
#3
(no author information available yet)
No abstract text is available yet for this article.
April 2017: Monoclonal Antibodies in Immunodiagnosis and Immunotherapy
https://www.readbyqxmd.com/read/28429258/hormonal-regulation-of-nk-cell-cytotoxic-activity
#4
S V Shirshev, I V Nekrasova, O L Gorbunova, E G Orlova
The effects of chorionic gonadotropin, estriol (E3), leptin, ghrelin, and kisspeptin on the intracellular expression of perforin, granzyme A, and granzyme B was studied in separated NK cells. All studied hormones except E3 are could modulate the expression of cytotoxic enzymes in NK cells by suppression of the expression of the most active proapoptotic agents, resulting in increased expression of granzyme A, which is typical of the decidual subpopulation of these lymphocytes.
January 2017: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
https://www.readbyqxmd.com/read/28428639/obestatin-stimulates-glucose-induced-insulin-secretion-through-ghrelin-receptor-ghs-r
#5
Geetali Pradhan, Chia-Shan Wu, Jong Han Lee, Preeti Kanikarla, Shaodong Guo, Vijay K Yechoor, Susan L Samson, Yuxiang Sun
Orexigenic hormone ghrelin and anorexic hormone obestatin are encoded by the same preproghrelin gene. While it is known that ghrelin inhibits glucose-stimulated insulin secretion (GSIS), the effect of obestatin on GSIS is unclear. Ghrelin's effect is mediated by its receptor Growth Hormone Secretagogue Receptor (GHS-R), but the physiologically relevant receptor of obestatin remains debatable. Here we have investigated the effect of obestatin on GSIS in vitro, in vivo and ex vivo, and tested whether obestatin regulates insulin secretion through GHS-R...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28427806/decreased-synovial-fluid-ghrelin-levels-are-linked-with-disease-severity-in-primary-knee-osteoarthritis-patients-and-are-increased-following-laser-therapy
#6
Yu-Cong Zou, Hong-Yu Deng, Zheng Mao, Chang Zhao, Ju Huang, Gang Liu
BACKGROUND: Ghrelin has been proved to inhibit inflammation and promote cartilage growth. So far, its role in patients with primary osteoarthritis has not been investigated. OBJECTIVE: The current study was performed to explore the serum and synovial ghrelin levels as well as the relationship between ghrelin levels and disease severity in primary knee OA patients. METHODS: 52 primary knee OA patients were recruited in the study. 52 sex and age-matched patients visiting our hospital for regular body check were selected as controls...
April 18, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28422951/helicobacter-pylori-infection-and-serum-leptin-obestatin-and-ghrelin-levels-in-mexican-schoolchildren
#7
Carolina Romo-González, Eugenia Mendoza, Robertino M Mera, Rafael Coria-Jiménez, Patricia Chico-Aldama, Rita Gomez-Diaz, Ximena Duque
BACKGROUND: There is little information about the possible role of H. pylori infection on appetite-regulating peptides in children. This study evaluated the association between H. pylori infection and serum levels of ghrelin, leptin, and obestatin in schoolchildren. METHODS: One hundred seventy-eight schoolchildren, students at boarding schools in Mexico City, participated. H. pylori infection status was determined every six months for one year by a breath test using (13)C-urea; schoolchildren with consistently positive or negative results were selected to participate...
April 19, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28422705/plasma-kisspeptin-and-ghrelin-levels-in-puberty-variant-cases
#8
Erdal Kurnaz, Yaşar Şen, Süleyman Aydın
BACKGROUND: The aim of this study was to determine the serum levels of kisspeptin and ghrelin (GAH), as well as the relationship of these two peptides with each other in premature thelarche (PT) and premature adrenarche (PA) cases and to investigate the possibility of using these peptides as markers in the differentiation of puberty disorders. METHODS: A PT group aged 1-8 years (n = 40), a PA group aged 1-9 years (n = 23, female/male = 20/3) and control groups consistent with each of the previous groups in terms of age and gender were created for the study...
April 19, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/28422530/physiological-changes-following-competition-in-male-and-female-physique-athletes-a-pilot-study
#9
Eric T Trexler, Katie R Hirsch, Bill I Campbell, Abbie E Smith-Ryan
The purpose of the current study was to evaluate changes in body composition, metabolic rate, and hormones during post-competition recovery. Data were collected from natural physique athletes (7 male/8 female) within one week before (T1) competition, within one week after (T2), and 4-6 weeks after (T3) competition. Measures included body composition (fat mass [FM] and lean mass [LM] from ultrasongraphy), resting metabolic rate (RMR; indirect calorimetry), and salivary leptin, testosterone, cortisol, ghrelin, and insulin...
April 19, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28422122/infant-milk-fat-droplet-size-and-coating-affect-postprandial-responses-in-healthy-adult-men-a-proof-of-concept-study
#10
S Baumgartner, B J M van de Heijning, D Acton, R P Mensink
BACKGROUND/OBJECTIVES: Fat droplets in human milk (HM) are larger and surrounded by a phospholipid membrane compared with infant milk formulas (IMF). Since the physical structure of fat droplets might affect digestion and postprandial metabolism, an IMF was developed more mimicking HM lipid structure than current IMF. SUBJECTS/METHODS: A randomised, double-blind, crossover study was performed in 29 fasted healthy men (aged 18-25 years, BMI: 18-25 kg/m(2)) to compare 5-hour postprandial responses after consumption of an experimental IMF (Concept, Nuturis) with a current IMF (Control)...
April 19, 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28422060/clarifying-the-ghrelin-system-s-ability-to-regulate-feeding-behaviours-despite-enigmatic-spatial-separation-of-the-ghsr-and-its-endogenous-ligand
#11
REVIEW
Alexander Edwards, Alfonso Abizaid
Ghrelin is a hormone predominantly produced in and secreted from the stomach. Ghrelin is involved in many physiological processes including feeding, the stress response, and in modulating learning, memory and motivational processes. Ghrelin does this by binding to its receptor, the growth hormone secretagogue receptor (GHSR), a receptor found in relatively high concentrations in hypothalamic and mesolimbic brain regions. While the feeding and metabolic effects of ghrelin can be explained by the effects of this hormone on regions of the brain that have a more permeable blood brain barrier (BBB), ghrelin produced within the periphery demonstrates a limited ability to reach extrahypothalamic regions where GHSRs are expressed...
April 19, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28420089/suppression-of-ghs-r-in-agrp-neurons-mitigates-diet-induced-obesity-by-activating-thermogenesis
#12
Chia-Shan Wu, Odelia Y N Bongmba, Jing Yue, Jong Han Lee, Ligen Lin, Kenji Saito, Geetali Pradhan, De-Pei Li, Hui-Lin Pan, Allison Xu, Shaodong Guo, Yong Xu, Yuxiang Sun
Ghrelin, an orexigenic hormone released primarily from the gut, signals the hypothalamus to stimulate growth hormone release, enhance appetite and promote weight gain. The ghrelin receptor, aka Growth Hormone Secretagogue Receptor (GHS-R), is highly expressed in the brain, with highest expression in Agouti-Related Peptide (AgRP) neurons of the hypothalamus. We recently reported that neuron-specific deletion of GHS-R completely prevents diet-induced obesity (DIO) in mice by activating non-shivering thermogenesis...
April 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28419141/ghrelin-is-a-prognostic-marker-and-a-potential-therapeutic-target-in-breast-cancer
#13
Malin Grönberg, Cecilia Ahlin, Ylva Naeser, Eva Tiensuu Janson, Lars Holmberg, Marie-Louise Fjällskog
Ghrelin and obestatin are gastrointestinal peptides, encoded by the same preproghrelin gene. Both are expressed in breast cancer tissue and ghrelin has been implicated in breast cancer tumorigenesis. Despite recent advances in breast cancer management the need for new prognostic markers and potential therapeutic targets in breast cancer remains high. We studied the prognostic impact of ghrelin and obestatin in women with node negative breast cancer. Within a cohort of women with breast cancer with tumor size ≤ 50 mm, no lymph node metastases and no initiation of adjuvant chemotherapy, 190 women were identified who died from breast cancer and randomly selected 190 women alive at the corresponding time as controls...
2017: PloS One
https://www.readbyqxmd.com/read/28419119/plasma-ghrelin-level-and-plasma-ghrelin-obestatin-ratio-are-related-to-intestinal-metaplasia-in-elderly-patients-with-functional-dyspepsia
#14
Su Hwan Kim, Ji Won Kim, Junsu Byun, Ji Bong Jeong, Byeong Gwan Kim, Kook Lae Lee
BACKGROUND: Whether plasma ghrelin/obestatin levels are associated with Helicobacter pylori (H. pylori) infection, subtypes of functional dyspepsia (FD), and gastric mucosal histology has not yet been established in elderly patients. OBJECTIVE: The aim of this study was to determine whether plasma ghrelin and obestatin levels are related to gastric mucosal histology, H. pylori infection, and FD subtypes in elderly patients with FD. METHODS: Ninety-two patients diagnosed with FD and older than 60 years (median age 69...
2017: PloS One
https://www.readbyqxmd.com/read/28415953/influence-of-etanercept-on-leptin-and-ghrelin-secretion-in-children-with-juvenile-idiopathic-arthritis
#15
Izabela Maciejewska-Paszek, Elżbieta Grochowska-Niedworok, Andrzej Siwiec, Anna Gruenpeter, Lechosław Dul, Tomasz Irzyniec
Objective To assess possible changes in leptin and ghrelin secretion due to etanercept in juvenile idiopathic arthritis (JIA). Methods 50 patients with JIA and 16 age-matched controls were enrolled into this prospective, cross-sectional study. Serum leptin, total and acyl ghrelin were measured in addition to white blood cell (WBC) and lymphocyte counts. Results 25 patients received etanercept and 25 conventional therapies (including methotrexate) for JIA. There was no difference between treatment and control groups in leptin or ghrelin levels and no evidence of a relationship between leptin and ghrelin in patients with JIA...
April 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28410130/ghrelin-doesn-t-limit-insulin-release-in-pregnant-rats-fed-low-protein-diet
#16
Haijun Gao, Eric Ho, Chandra Yallampalli
To test the hypothesis that insulin secretion in pregnant rats fed LP diet is reduced by ghrelin signaling in pancreatic islets,  we investigated plasma insulin levels, expression of ghrelin and its receptor and glucose stimulated insulin secretion (GSIS) of pancreatic islets in response to ghrelin. Plasma insulin levels were lower and ghrelin receptor abundance in islets was unaltered in LP rats. In the presence of both 2.8 and 16.7 mM glucose, GSIS was lower in LP compared to CT rats. In the presence of 2...
June 1, 2017: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/28409695/characterization-of-a-monoclonal-antibody-specific-for-the-growth-hormone-secretagogue-receptor
#17
Katia Crotta, Claudia Casnici, Noemi Tonna, Donatella Lattuada, Fabio Bianco, Ornella Marelli
Ghrelin is an orexigenic peptide hormone that primarily regulates growth hormone secretion, food intake, and energy homeostasis. It has been shown to also play a role in numerous higher brain functions, such as the regulation of inflammation and cell proliferation. Ghrelin is the endogenous ligand of the growth hormone secretagogue receptor (GHSR), a G-protein-coupled receptor highly expressed in brain and detectable in some peripheral tissues. The wide distribution of ghrelin receptor and the number of tissues and cell types known to respond to ghrelin suggest that a number of systems may be affected by treatment with this hormone or its analogues...
April 14, 2017: Monoclonal Antibodies in Immunodiagnosis and Immunotherapy
https://www.readbyqxmd.com/read/28402548/the-acylated-unacylated-ghrelin-ratio-is-similar-in-acromegaly-patients-during-different-treatment-regimens
#18
Ammar Muhammad, Patric J D Delhanty, Martin Huisman, Jenny A Visser, Aart Jan van der Lelij, Sebastian J C M M Neggers
Background: Data on plasma acylated ghrelin (AG) and unacylated ghrelin (UAG) levels in acromegaly are limited. High ratios of AG/UAG are linked with type 2 diabetes, obesity and hyperphagia (e.g. in Prader-Willi syndrome). Objective: To assess fasting plasma AG and UAG levels, and the AG/UAG ratio in acromegaly patients on combination treatment of long-acting somatostatin analogues and pegvisomant. As a control, we used patients controlled with pegvisomant monotherapy, and medically naïve patients with active acromegaly...
April 11, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28398946/high-intensity-interval-training-appetite-and-reward-value-of-food-in-the-obese
#19
Catia Martins, Irina Aschehoug, Marit Ludviksen, Jens Holst, Graham Finlayson, Ulrik Wisloff, Linda Morgan, Neil King, Bård Kulseng
PURPOSE: Studies on the impact of chronic interval training on appetite in the obese population are scarce. The aim of this study was to determine the effect of 12 weeks of isocaloric programs of moderate-intensity continuous training (MICT) or high-intensity interval training (HIIT), or a short-duration HIIT (1/2HIIT), on subjective feelings of appetite, appetite-related hormones and reward value of food in sedentary obese individuals. METHODS: Forty-six sedentary obese individuals (30 women and 16 men), with a BMI of 33...
April 11, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28398233/therapeutic-potential-of-targeting-the-ghrelin-pathway
#20
REVIEW
Gustav Colldén, Matthias H Tschöp, Timo D Müller
Ghrelin was discovered in 1999 as the endogenous ligand of the growth-hormone secretagogue receptor 1a (GHSR1a). Since then, ghrelin has been found to exert a plethora of physiological effects that go far beyond its initial characterization as a growth hormone (GH) secretagogue. Among the numerous well-established effects of ghrelin are the stimulation of appetite and lipid accumulation, the modulation of immunity and inflammation, the stimulation of gastric motility, the improvement of cardiac performance, the modulation of stress, anxiety, taste sensation and reward-seeking behavior, as well as the regulation of glucose metabolism and thermogenesis...
April 11, 2017: International Journal of Molecular Sciences
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