keyword
MENU ▼
Read by QxMD icon Read
search

Obestatin

keyword
https://www.readbyqxmd.com/read/28428639/obestatin-stimulates-glucose-induced-insulin-secretion-through-ghrelin-receptor-ghs-r
#1
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/28422951/helicobacter-pylori-infection-and-serum-leptin-obestatin-and-ghrelin-levels-in-mexican-schoolchildren
#2
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/28419141/ghrelin-is-a-prognostic-marker-and-a-potential-therapeutic-target-in-breast-cancer
#3
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
#4
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/28223092/obestatin-improves-oxidative-brain-damage-and-memory-dysfunction-in-rats-induced-with-an-epileptic-seizure
#5
Türkan Koyuncuoğlu, Caner Vızdıklar, Doğan Üren, Hakan Yılmaz, Çağan Yıldırım, Sefa Semih Atal, Dilek Akakın, Elif Kervancıoğlu Demirci, Meral Yüksel, Berrak Ç Yeğen
Obestatin was shown to alleviate renal, gastrointestinal and haemorrhage-induced brain injury in rats. In order to investigate the neuroprotective effects of obestatin on seizure-induced oxidative brain injury, an epileptic seizure was induced with a single intraperitoneal (i.p.) dose of pentylenetetrazole (PTZ, 45mg/kg) in male Wistar rats. Thirty minutes before the PTZ injection, rats were treated with either saline or obestatin (1μg/kg, i.p.). Seizure was video-taped and then evaluated by using Racine's scoring (0-5)...
February 20, 2017: Peptides
https://www.readbyqxmd.com/read/28212895/the-influence-of-enteral-obestatin-administration-to-suckling-rats-on-intestinal-contractility
#6
M Słupecka, P Grzesiak, J Kwiatkowski, M Gajewska, A Kuwahara, I Kato, J Woliński
This study investigated the effect of enteral administration of obestatin on the contractility of whole-thickness preparations of duodenum and middle jejunum, as well as on the morphology of the enteric nervous system (ENS). Suckling rats were assigned to 3 groups (n=12) treated with: C-saline solution; LO-obestatin (125nmol/kgb.wt); HO-obestatin (250nmol/kgb.wt). Saline solution or obestatin were administered twice daily, from the 14th to the 21st day of life. Sections were studied in an organ bath, for isometric recording in the presence of acetylocholine (ACh), atropine (ATR) and tetradotoxin (TTX)...
February 16, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28174289/vascular-effects-of-obestatin-in-lean-and-obese-subjects
#7
Francesca Schinzari, Augusto Veneziani, Nadia Mores, Angela Barini, Nicola Di Daniele, Carmine Cardillo, Manfredi Tesauro
Obese patients have impaired vasodilator reactivity and increased endothelin (ET)-1-mediated vasoconstriction, two abnormalities contributing to vascular dysfunction. Obestatin, a product of the ghrelin gene, in addition to favorable effects on glucose and lipid metabolism, has shown nitric oxide (NO)-dependent vasodilator properties in experimental models. Given these premises, we compared the effects of exogenous obestatin on forearm flow in lean and obese subjects and assessed its influence on ET-1-dependent vasoconstrictor tone in obesity...
February 7, 2017: Diabetes
https://www.readbyqxmd.com/read/28170279/regulation-of-gip-and-ghrelin-in-healthy-subjects-fed-on-sun-dried-raisins-a-pilot-study-with-a-crossover-trial-design
#8
Andriana C Kaliora, Panagiotis T Kanellos, Aristea Gioxari, Vaios T Karathanos
The comparative effects of glucose and fructose on appetite and specifically on hormones regulating appetite remain controversial, and the role of different types of sugars has not been investigated broadly. To estimate the effect of raisins, a dried fruit rich in fructose, fibers, and phenolics, on hormones involved in the postprandial response. Ten healthy normal-weight subjects received in a crossover design 74 g raisins or 50 g glucose as reference food. Glucose, insulin, and appetite hormones were measured at time 0 and 60, 120, and 180 min after consumption...
March 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/28091434/serum-obestatin-and-omentin-levels-in-patients-with-diabetic-nephropathy
#9
M Zorlu, M Kiskac, E M Güler, I Gültepe, E Yavuz, K Çelik, A Kocyigit
INTRODUCTION: Diabetic nephropathy is the leading cause of chronic kidney disease and accounts for almost 45% of all new patients requiring renal replacement therapy. Omentin and obestatin, two novel proteins were suggested to be associated with insulin resistance, type 2 diabetes and cardiovascular risk factors. Thus, we postulated that they may also have an association with diabetic nephropathy which is known to be an independent cardiovascular risk factor. In order to investigate such an association we compared serum omentin and obestatin levels in type 2 diabetic patients with normoalbuminuria (NA) and macroalbuminuria (MA)...
February 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/28063509/function-of-obestatin-in-the-digestive-system
#10
REVIEW
Yue-Xian Xing, Liu Yang, Hong-Yu Kuang, Xin-Yuan Gao, Hao-Ling Liu
Physical health has a direct relationship with digestive function. Any abnormalities in the link may cause malnutrition, endocrine disorders, and the decline of organ functions. Obestatin, a biologically active peptide, is encoded by the ghrelin gene. Most studies suggest that obestatin is a pleiotropic peptide, which acts by suppressing the motility of the gastrointestinal tract, regulating the secretion of insulin, reducing inflammation and apoptosis, and promoting proliferation. These characteristics suggest that obestatin may represent an efficient way to prevent the occurrence and development of some digestive diseases...
February 2017: Nutrition
https://www.readbyqxmd.com/read/27901469/obestatin-improves-hepatic-injury-induced-by-ischemia-reperfusion-in-rats-role-of-nitric-oxide
#11
Ola A El-Gohary
Hepatic ischemia/reperfusion (I/R) injury is a common clinical problem. The present study was conducted to evaluate the protective effect of obestatin against I/R-induced liver injury. Rats were divided into three groups (n = 10): control sham-operated group, I/R group and obestatin treatment group. Rats of I/R group and obestatin treatment group underwent partial hepatic ischemia for 60 min followed by 90 min reperfusion. At the beginning of the 90-min reperfusion period, rats of obestatin treatment group were injected with obestatin (100 μg/kg) intravenously...
January 2017: General Physiology and Biophysics
https://www.readbyqxmd.com/read/27900560/serum-leptin-obestatin-and-ghrelin-levels-and-gastric-emptying-rates-of-liquid-and-solid-meals-in-non-obese-rats-with-roux-en-y-bypass-surgery-or-prosthesis-placement-implications-for-the-role-of-vagal-afferents
#12
Yunus Yavuz, Zarife Nigar Özdemir Kumral, Gülsün Memi, Özge Dağdeviren Çevik, Cumhur Yeğen, Berrak Ç Yeğen
BACKGROUND: The present study aimed to investigate the effects of Roux-en-Y gastric bypass (RYGB) and prosthesis placement on gastric emptying rate in conjunction with serum ghrelin-obestatin-leptin responses in non-obese rats with intact or denervated afferent innervation. METHODS: Under anesthesia, male Sprague-Dawley rats underwent either sham operation, RYGB, prosthesis, and/or Gregory cannula placement. Three weeks later, liquid or solid gastric emptying tests were performed and serum ghrelin, leptin and obestatin levels were measured...
November 29, 2016: Obesity Surgery
https://www.readbyqxmd.com/read/27825986/intracerebroventricular-injection-of-ghrelin-decreases-wheel-running-activity-in-rats
#13
Yumiko Miyatake, Tetsuya Shiuchi, Kazuaki Mawatari, Satomi Toda, Yasuko Taniguchi, Akari Futami, Fukiko Sato, Masashi Kuroda, Mayu Sebe, Rie Tsutsumi, Nagakatsu Harada, Yasuhiko Minokoshi, Tadahiro Kitamura, Koro Gotoh, Masaki Ueno, Yutaka Nakaya, Hiroshi Sakaue
There is an increasing interest in elucidating the molecular mechanisms by which voluntary exercise is regulated. In this study, we examined how the central nervous system regulates exercise. We used SPORTS rats, which were established in our laboratory as a highly voluntary murine exercise model. SPORTS rats showed lower levels of serum ghrelin compared with those of the parental line of Wistar rats. Intracerebroventricular and intraperitoneal injection of ghrelin decreased wheel-running activity in SPORTS rats...
January 2017: Peptides
https://www.readbyqxmd.com/read/27782745/obestatin-modulates-ghrelin-s-effects-on-the-basal-and-stimulated-testosterone-secretion-by-the-testis-of-rat-an-in-vitro-study
#14
T Afsar, S Jahan, S Razak, A Almajwal, M Abulmeaty, H Wazir, A Majeed
The functional antagonism between obestatin and ghrelin in testis is under investigated. We investigated the ability of obestatin to counteract the inhibitory effect of ghrelin on basal and stimulated testosterone (T) secretion in vitro. Testicular strips from adult rats were incubated with 10 ng/ml and 100 ng/ml of obestatin alone, ghrelin alone and obestatin + ghrelin. Obestatin modulation of stimulated T secretion was evaluated by incubation of testicular samples with 10 ng/ml and 100 ng/ml obestatin, ghrelin and obestatin+ ghrelin in the absence and presence of 10 IU of human chorionic gonadotrophin (hCG)...
October 26, 2016: Physiological Research
https://www.readbyqxmd.com/read/27775083/bacterial-mimetics-of-endocrine-secretory-granules-as-immobilized-in-vivo-depots-for-functional-protein-drugs
#15
María Virtudes Céspedes, Yolanda Fernández, Ugutz Unzueta, Rosa Mendoza, Joaquin Seras-Franzoso, Alejando Sánchez-Chardi, Patricia Álamo, Verónica Toledo-Rubio, Neus Ferrer-Miralles, Esther Vázquez, Simó Schwartz, Ibane Abasolo, José Luis Corchero, Ramon Mangues, Antonio Villaverde
In the human endocrine system many protein hormones including urotensin, glucagon, obestatin, bombesin and secretin, among others, are supplied from amyloidal secretory granules. These granules form part of the so called functional amyloids, which within the whole aggregome appear to be more abundant than formerly believed. Bacterial inclusion bodies (IBs) are non-toxic, nanostructured functional amyloids whose biological fabrication can be tailored to render materials with defined biophysical properties. Since under physiological conditions they steadily release their building block protein in a soluble and functional form, IBs are considered as mimetics of endocrine secretory granules...
October 24, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27750262/the-obestatin-ghrelin-ratio-and-ghrelin-genetics-in-adult-celiac-patients-before-and-after-a-gluten-free-diet-in-irritable-bowel-syndrome-patients-and-healthy-individuals
#16
Francesco Russo, Guglielmina Chimienti, Michele Linsalata, Caterina Clemente, Antonella Orlando, Giuseppe Riezzo
BACKGROUND: Ghrelin levels and obestatin/ghrelin ratio have been proposed as activity markers in ulcerative colitis, but no data are available in celiac disease (CD) and irritable bowel syndrome (IBS). Our aims were as follows: (a) to assess obestatin and ghrelin concentrations in adult active CD patients, diarrhea-predominant IBS (IBS-d), and healthy controls (HC) in relation to intestinal permeability; (b) to evaluate the ghrelin-obestatin profile in CD patients after a 1-year gluten-free diet (GFD); and (c) to establish the impact of ghrelin genetics...
February 2017: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/27693419/hypothalamic-regulation-of-body-growth-and-appetite-by-ghrelin-derived-peptides-during-balanced-nutrition-or-undernutrition
#17
Rim Hassouna, Alexandra Labarthe, Virginie Tolle
Among the gastrointestinal hormones that regulate food intake and energy homeostasis, ghrelin plays a unique role as the first one identified to increases appetite and stimulate GH secretion. This review highlights the latest mechanism by which ghrelin modulates body growth, appetite and energy metabolism by exploring pharmacological actions of the hormone and consequences of genetic or pharmacological blockade of the ghrelin/GHS-R (Growth Hormone Secretagogue Receptor) system on physiological responses in specific nutritional situations...
September 28, 2016: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/27682709/endoglin-and-obestatin-levels-cardiometabolic-risk-factors-and-subclinical-atherosclerosis-in-children-aged-10-18-years
#18
Nurullah Çelik, Peyami Cinaz, Aysun Bideci, Betül Derinkuyu, Hamdi Cihan Emeksiz, Esra Döğer, Çağrı Damar, Özge Yüce, Orhun Çamurdan
BACKGROUND: The aim of this study was to investigate the early signs of atherosclerosis and to evaluate serum endoglin and obestatin levels as predictors of subclinical atherosclerosis in obese children. METHODS: A total of 95 children (60 obese and 35 controls) aged 10-18 years were included in the study. Their endoglin and obestatin levels and biochemical parameters were measured. The carotid intima media thickness (cIMT) and brachial artery flow-mediated dilatation (FMD) responses were evaluated...
October 1, 2016: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/27530317/ghrelin-gene-products-rescue-cultured-adult-rat-hippocampal-neural-stem-cells-from-high-glucose-insult
#19
Sehee Kim, Chanyang Kim, Seungjoon Park
Adult hippocampal neurogenesis is decreased in type 2 diabetes, and this impairment appears to be important in cognitive dysfunction. Previous studies suggest that ghrelin gene products (acylated ghrelin (AG), unacylated ghrelin (UAG) and obestatin (OB)) promote neurogenesis. Therefore, we hypothesize that ghrelin gene products may reduce the harmful effects of high glucose (HG) on hippocampal neural stem cells (NSCs). The aim of this study was to investigate the role of these peptides on the survival of cultured hippocampal NSCs exposed to HG insult...
October 2016: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/27508828/-op-7b-09-chemerin-and-blood-pressure-and-metabolic-syndrome-in-postmenopausal-women
#20
A Olszanecka, K Kawecka-Jaszcz, D Czarnecka
OBJECTIVE: Chemerin is recently identified adipose hormone, which plays a role in adipogenesis, energy metabolism and inflammation. Increased levels of chemerin have been linked to obesity and development of diabetes mellitus. During the transition from premenopause to postmenopause, many women experience weight gain and central fat deposition, hence we hypothesized that circulating level of chemerin can play a role in the pathogenesis of hypertension and cardiometabolic risk in postmenopausal females...
September 2016: Journal of Hypertension
keyword
keyword
71321
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"