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https://www.readbyqxmd.com/read/28858127/serum-ghrelin-but-not-obestatin-is-a-potential-predictor-of-acute-pancreatitis-severity
#1
Huilin Wang, Mengbin Qin, Zhihai Liang, Renjie Chang, Hongzong Fu, Yule Wei, Guodu Tang
The roles of ghrelin and obestatin in AP remain controversial.This study investigates the effects and the predictive value of serum ghrelin and obestatin levels in the early stage of AP.A total of 193 consecutive patients with AP and 24 healthy controls were included. Patients were divided into mild acute pancreatitis (MAP), moderately severe acute pancreatitis (MSAP), and severe acute pancreatitis (SAP) groups. Serum levels of ghrelin and obestatin were measured on the first, third, and fifth days of hospitalization...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28807720/comparison-of-the-therapeutic-effects-of-sildenafil-citrate-heparin-and-neuropeptides-in-a-rat-model-of-acetic-acid-induced-gastric-ulcer
#2
COMPARATIVE STUDY
Mehmet Kalayci, Mehmet Ali Kocdor, Tuncay Kuloglu, İbrahim Sahin, Mehmet Sarac, Aziz Aksoy, Meltem Yardim, Semih Dalkilic, Onur Gursu, Suna Aydin, Ramazan Fazil Akkoc, Meltem Ugras, Gokhan Artas, İbrahim Hanifi Ozercan, Kader Ugur, Suleyman Aydin
AIMS: The purpose of our investigative work has been to determine whether there can be therapeutic roles in the administration of sildenafil citrate, heparin and several neuropeptides on an animal model where gastric ulcers were induced with acetic acid, and to compare their efficacy. MATERIALS AND METHODS: The animals were divided into 13 groups, with 4 animals in each. Gastric ulcers was induced in the animals of 12 groups with one untreated group being left as the control (Group I - control; given normal saline (NS))...
October 1, 2017: Life Sciences
https://www.readbyqxmd.com/read/28770954/assessment-of-obestatin-and-arginine-vasopressin-avp-levels-in-acute-renal-failure-and-acute-heart-failure
#3
X-Y Miao, Z Li, Z Hui, F Liu, X-W Zhang
OBJECTIVE: We conducted this study to assess the clinical application of obestatin and arginine vasopressin (AVP) levels in cases of acute renal failure (ARF) and acute heart failure (AHF). PATIENTS AND METHODS: 30 cases of ARF, 30 cases of AHF, 30 cases of ARF complicated with AHF, and 30 cases of healthy subjects (control group) were successively selected. An ELISA test was conducted to detect levels of obestatin and AVP. Routine biochemistry testing was applied to detect the levels of serum creatinine and calculate the glomerular filtration rate (GFR)...
July 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28759087/saliva-serum-ghrelin-obestatin-and-homocysteine-levels-in-patients-with-ischaemic-heart-disease
#4
Nermin Kilic, Necati Dagli, Suleyman Aydin, Fazilet Erman, Yuksel Bek, Okhan Akin, S S Kilic, Haci Kemal Erdemli, Hasan Alacam
BACKGROUND: We aimed to compare ghrelin, obestatin, homocysteine (Hcy), vitamin B12 and folate levels in the serum and saliva of ischaemic heart disease patients. METHODS: Serum and saliva were collected from 33 ischaemic heart disease (IHD) patients and 28 age- and body mass index-matched healthy individuals. Levels of acylated and desacylated ghrelin, obestatin and Hcy were determined using the ELISA method. RESULTS: Acylated ghrelin, desacylated ghrelin and obestatin levels in the saliva were found to be higher than those in the serum of the control group, while acylated and desacylated ghrelin levels in the saliva were significantly lower than those in the serum...
May 2017: Cardiovascular Journal of Africa
https://www.readbyqxmd.com/read/28750736/obestatin-increases-the-regenerative-capacity-of-human-myoblasts-transplanted-intramuscularly-in-an-immunodeficient-mouse-model
#5
Icia Santos-Zas, Elisa Negroni, Kamel Mamchaoui, Carlos S Mosteiro, Rosalia Gallego, Gillian S Butler-Browne, Yolanda Pazos, Vincent Mouly, Jesus P Camiña
Although cell-based therapy is considered a promising method aiming at treating different muscular disorders, little clinical benefit has been reported. One of major hurdles limiting the efficiency of myoblast transfer therapy is the poor survival of the transplanted cells. Any intervention upon the donor cells focused on enhancing in vivo survival, proliferation, and expansion is essential to improve the effectiveness of such therapies in regenerative medicine. In the present work, we investigated the potential role of obestatin, an autocrine peptide factor regulating skeletal muscle growth and repair, to improve the outcome of myoblast-based therapy by xenotransplanting primary human myoblasts into immunodeficient mice...
July 24, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28744974/obestatin-regulates-cardiovascular-function-and-promotes-cardioprotection-through-the-nitric-oxide-pathway
#6
Claudia Penna, Francesca Tullio, Saveria Femminò, Carmine Rocca, Tommaso Angelone, Maria C Cerra, Maria Pia Gallo, Iacopo Gesmundo, Alessandro Fanciulli, Maria Felice Brizzi, Pasquale Pagliaro, Giuseppe Alloatti, Riccarda Granata
Patients with ischaemic heart disease or chronic heart failure show altered levels of obestatin, suggesting a role for this peptide in human heart function. We have previously demonstrated that GH secretagogues and the ghrelin gene-derived peptides, including obestatin, exert cardiovascular effects by modulating cardiac inotropism and vascular tone, and reducing cell death and contractile dysfunction in hearts subjected to ischaemia/reperfusion (I/R), through the Akt/nitric oxide (NO) pathway. However, the mechanisms underlying the cardiac actions of obestatin remain largely unknown...
July 26, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28744641/effect-of-chronic-administration-of-obestatin-and-its-fragment-fnap-nh2-on-behavioral-activity-and-nociceptive-threshold-in-rats-with-normal-and-excess-body-weight
#7
E E Khirazova, E S Motorykina, M V Maslova, A S Maklakova, A V Graf, N A Sokolova, A A Kamenskii
The effects of chronic intranasal administration of 300 nmol/kg obestatin and its fragment FNAP-NH2 on behavioral activity and nociceptive threshold were examined in male Wistar rats with normal body weight or alimentary obesity. In normal rats, obestatin produced no effect on behavior and nociception, whereas FNAP-NH2 fragment enhanced risk-taking behavior. Rats with excess body weight demonstrated less pronounced risk-taking behavior and elevated nociceptive threshold in comparison with normal animals, but these differences were abolished by chronic administration of FNAP-NH2...
July 25, 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28675664/obestatin-controls-the-ubiquitin-proteasome-and-autophagy-lysosome-systems-in-glucocorticoid-induced-muscle-cell-atrophy
#8
Tania Cid-Díaz, Icía Santos-Zas, Jessica González-Sánchez, Uxía Gurriarán-Rodríguez, Carlos S Mosteiro, Xesús Casabiell, Tomás García-Caballero, Vincent Mouly, Yolanda Pazos, Jesús P Camiña
BACKGROUND: Many pathological states characterized by muscle atrophy are associated with an increase in circulating glucocorticoids and poor patient prognosis, making it an important target for treatment. The development of treatments for glucocorticoid-induced and wasting disorder-related skeletal muscle atrophy should be designed based on how the particular transcriptional program is orchestrated and how the balance of muscle protein synthesis and degradation is deregulated. Here, we investigated whether the obestatin/GPR39 system, an autocrine/paracrine signaling system acting on myogenesis and with anabolic effects on the skeletal muscle, could protect against glucocorticoid-induced muscle cell atrophy...
July 3, 2017: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/28666876/endogenous-peptide-profile-for-elucidating-biosynthetic-processing-of-the-ghrelin-precursor
#9
Takashi Tsuchiya, Hiroshi Iwakura, Naoto Minamino, Kenji Kangawa, Kazuki Sasaki
Ghrelin is an orexigenic peptide primarily produced by gastric endocrine cells. The biosynthetic cleavage site of ghrelin has been well documented, but how its downstream region undergoes proteolytic processing remains poorly explored. Here, we provide the first snapshot of endogenous peptides from the ghrelin precursor by profiling the secretopeptidome of cultured mouse ghrelin-producing cells during exocytosis. Mapping of MS/MS sequenced peptides to the precursor highlighted three atypical monobasic processing sites, including the established C-terminus of ghrelin and the N-terminal cleavage site for obestatin, a putative 23-amino-acid C-terminally amidated peptide...
June 27, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28653126/impact-of-metabolic-hormones-secreted-in-human-breast-milk-on-nutritional-programming-in-childhood-obesity
#10
REVIEW
Pilar Amellali Badillo-Suárez, Maricela Rodríguez-Cruz, Xóchitl Nieves-Morales
Obesity is the most common metabolic disease whose prevalence is increasing worldwide. This condition is considered a serious public health problem due to associated comorbidities such as diabetes mellitus and hypertension. Perinatal morbidity related to obesity does not end with birth; this continues affecting the mother/infant binomial and could negatively impact on metabolism during early infant nutrition. Nutrition in early stages of growth may be essential in the development of obesity in adulthood, supporting the concept of "nutritional programming"...
June 27, 2017: Journal of Mammary Gland Biology and Neoplasia
https://www.readbyqxmd.com/read/28649890/alteration-of-ghrelin-obestatin-ratio-in-adolescence-with-polycystic-ovarian-syndrome
#11
Weiguang Wu, Xiaobin Fan, Yuecheng Yu, Zheng Wang, Yingchun Wang
Ghrelin, an endoggenous for the growth hormone secretagogue receptor, has been shown to participate in the regulation of energy homeostasis and pituitary hormone secretion. Obestatin, encoded by the same gene as ghrelin, is described as a physiological opponent of ghrelin. Ghrelin and obestatin are altered in polycystic ovary syndrome (PCOS), which is characterized by insulin resistance and pituitary hormone secretion disorder. The aim of this study was to evaluate ghrelin/obestatin imbalance in relation to insulin resistance and pituitary hormone in adolescence with PCOS...
June 24, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28638683/low-prevalence-of-obesity-in-beh%C3%A3-et-s-disease-is-associated-with-high-obestatin-level
#12
Süleyman Serdar Koca, Murat Kara, Metin Özgen, Ramazan Dayanan, Caner Feyzi Demir, Kader Aksoy, Nevin İlhan, Emir Dönder, Ahmet Işık
OBJECTIVE: Chronic inflammatory diseases are associated with altered body composition. Ghrelin has anti-inflammatory effects, and its level is altered in obesity and inflammatory diseases. The aim of the study was to evaluate the prevalence of obesity and ghrelin and obestatin levels in patients with Behçet's disease (BD). MATERIAL AND METHODS: One hundred and forty-three (143) patients with BD and 112 healthy controls (HC) were enrolled. Participants were subdivided according to the body mass index (BMI) as lean (<18...
June 2017: European Journal of Rheumatology
https://www.readbyqxmd.com/read/28522824/obestatin-controls-skeletal-muscle-fiber-type-determination
#13
Icía Santos-Zas, Tania Cid-Díaz, Jessica González-Sánchez, Uxía Gurriarán-Rodriguez, Carlos Seoane-Mosteiro, Begoña Porteiro, Rubén Nogueiras, Xesús Casabiell, José Luis Relova, Rosalía Gallego, Vincent Mouly, Yolanda Pazos, Jesus P Camiña
Obestatin/GPR39 signaling stimulates skeletal muscle growth and repair by inducing both G-protein-dependent and -independent mechanisms linking the activated GPR39 receptor with distinct sets of accessory and effector proteins. In this work, we describe a new level of activity where obestatin signaling plays a role in the formation, contractile properties and metabolic profile of skeletal muscle through determination of oxidative fiber type. Our data indicate that obestatin regulates Mef2 activity and PGC-1α expression...
May 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28502329/serum-adipocytokine-levels-as-surrogate-markers-for-disease-activity-of-crohn-s-disease
#14
Su Hwan Kim, Seung Hyeon Jang, Ji Won Kim, Byeong Gwan Kim, Kook Lae Lee, You Sun Kim, Dong Soo Han, Joo Sung Kim
BACKGROUND: Determining inflammatory activity is crucial for assessing disease activity and for tailoring therapy in patients with Crohn׳s disease (CD). This study aimed to evaluate adipocytokine levels in patients with CD and to determine whether they can serve as surrogate markers for disease activity. MATERIALS AND METHODS: Serum samples and information regarding the clinical features of patients in the CD Network Project registry were collected from March 2009 to February 2012...
May 2017: American Journal of the Medical Sciences
https://www.readbyqxmd.com/read/28477305/long-term-obestatin-treatment-of-mice-type-2-diabetes-increases-insulin-sensitivity-and-improves-liver-function
#15
Paweł A Kołodziejski, Ewa Pruszyńska-Oszmałek, Mathias Z Strowski, Krzysztof W Nowak
PURPOSE: Obestatin and ghrelin are peptides encoded by the preproghrelin gene. Obestatin inhibits food intake, in addition to regulation of glucose and lipid metabolism. Here, we test the ability of obestatin at improving metabolic control and liver function in type 2 diabetic animals (type 2 diabetes mellitus). METHODS: The effects of chronic obestatin treatment of mice with experimentally induced type 2 diabetes mellitus on serum levels of glucose and lipids, and insulin sensitivity are characterized...
June 2017: Endocrine
https://www.readbyqxmd.com/read/28473748/combination-of-selective-immunoassays-and-mass-spectrometry-to-characterize-preproghrelin-derived-peptides-in-mouse-tissues
#16
Rim Hassouna, Dominique Grouselle, Giovanni Chiappetta, Joanna Lipecka, Oriane Fiquet, Catherine Tomasetto, Joëlle Vinh, Jacques Epelbaum, Virginie Tolle
Preproghrelin is a prohormone producing several preproghrelin-derived peptides with structural and functional heterogeneity: acyl ghrelin (AG), desacyl ghrelin (DAG), and obestatin. The absence of selective and reliable assays to measure these peptides simultaneously in biological samples has been a limitation to assess their real proportions in tissues and plasma in physiological and pathological conditions. We aimed at reliably measure the ratio between the different preproghrelin-derived peptides in murine tissues using selective immunoassays combined with a highly sensitive mass spectrometry method...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28472020/obestatin-plays-beneficial-role-in-cardiomyocyte-injury-induced-by-ischemia-reperfusion-in-vivo-and-in-vitro
#17
Qin Zhang, Xin-Wei Dong, Jia-Ying Xia, Ke-Ying Xu, Zhe-Rong Xu
BACKGROUND Obestatin, primarily recognized as a peptide within the gastrointestinal system, has been shown to benefit the cardiovascular system. We designed this experiment to study the protective role and underlying mechanism of obestatin against ischemia-reperfusion(I/R) injury in myocardial cells. MATERIAL AND METHODS In an In vivo experiment, LAD was ligated for 0.5 h and then opened for reperfusion with obestatin for 24 h. Then, the infarction area was shown with TTC staining, and inflammation factors in serum were analyzed by qRT-PCR...
May 4, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28453173/correlation-analysis-of-serum-obestatin-expression-with-insulin-resistance-in-childhood-obesity
#18
M Y Zhang, F Li, J P Wang
Childhood obesity is a serious public health concern condition, as excess body fat can negatively affect a child's health. Obestatin is a hormone that regulates body weight by suppressing appetite and reducing food intake; fasting obestatin level is negatively correlated with basal insulin level. This study aims to investigate the role of obestatin in insulin resistance. A total of 54 children with simple obesity and 57 healthy controls were recruited. Levels of serum insulin, fasting blood glucose, cholesterol, triglyceride, low-density lipoprotein, and high-density lipoprotein were measured...
April 28, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28428639/obestatin-stimulates-glucose-induced-insulin-secretion-through-ghrelin-receptor-ghs-r
#19
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
#20
Carolina Romo-González, Eugenia Mendoza, Robertino M Mera, Rafael Coria-Jiménez, Patricia Chico-Aldama, Rita Gomez-Diaz, Ximena Duque
BackgroundThere is little information about the possible role of Helicobacter 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.MethodsOne hundred seventy-eight schoolchildren, students at boarding schools in Mexico City, participated. H. pylori infection status was determined every 6 months for 1 year by a breath test using (13)C-urea; schoolchildren with consistently positive or negative results were selected to participate...
October 2017: Pediatric Research
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