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Habitual binge/purge behavior influences circulating ghrelin levels in eating disorders.

Previous studies have reported that fasting plasma ghrelin concentrations play an important role in the pathophysiology of eating disorders. The purpose of this study was to examine the relationship between plasma ghrelin levels and frequency of abnormal eating behaviors, nutritional parameters in eating disorders. Fasting blood samples were obtained in 40 female anorexia nervosa (AN) patients, 21 restricting type (AN-R) and 19 binge-eating/purging type (AN-BP), in 31 bulimia nervosa (BN) patients, 18 purging type (BN-P) and 13 non-purging type (BN-NP), in 15 female healthy volunteers (control…

Acylated ghrelin inhibits spontaneous luteinizing hormone pulsatility and responsiveness to naloxone but not that to gonadotropin-releasing hormone in young men: evidence for a central inhibitory action of ghrelin on the gonadal axis.

CONTEXT: Recent evidence suggests that ghrelin exerts a negative modulation on the gonadal axis. Ghrelin was reported to suppress LH secretion in both animal and human models. Moreover, acylated ghrelin (AG) also decreases the LH responsiveness to GnRH in vitro. OBJECTIVE: The objective of the study was to evaluate the effects of AG infusion on spontaneous and stimulated gonadotropin secretion. DESIGN, PARTICIPANTS, AND INTERVENTION: In seven young healthy male volunteers (age mean +/- sem 26.4 +/- 2.6 yr), we evaluated LH and FSH levels every 15 min during: 1) iv isotonic saline infusion; 2…

Divergent effects of interleukin-6 and ghrelin on remission and relapse in depression treatment.

BACKGROUND: This study was to explore how serum ghrelin levels modulate the relationship between interleukin-6 (IL-6) and outcomes of antidepressant treatment, specifically focusing on 12-week remission and 24-month relapse in patients with depressive disorders. METHODS: This investigation involved the analysis of baseline serum levels of ghrelin and IL-6 among 1086 patients enrolled in a naturalistic study of stepwise antidepressant therapy. Remission was determined by a Hamilton Depression Rating Scale (HAMD) score of 7 or less at 12 weeks. Those who responded (HAMD score  <14) at this junc…

Modulation of Pancreatic Activity by Ghrelin and Its Potential Effects on Acute Pancreatitis.

Ghrelin is a brain-gut peptide primarily secreted by the gastric fundus, which exhibits a range of physiological functions, including stimulating growth hormone (GH) release, regulating energy metabolism, and modulating appetite. It is also expressed in pancreatic tissue and participates in the regulation of both endocrine and exocrine pancreatic functions. This article reviews the expression characteristics of ghrelin in the pancreas, its effects on islet cell function, and its potential protective mechanisms in acute pancreatitis (AP). Studies have shown that ghrelin and its receptor, Growth…

The Ghrelin-LEAP2 System in Obesity and Diabetes: Pathophysiological Roles and Therapeutic Potential.

PURPOSEOF REVIEW: Ghrelin is a gut-derived acylated hormone that regulates appetite, food reward-related behaviours, glycaemic control, and lipid metabolism. These actions are primarily mediated through activation of the growth hormone secretagogue receptor (GHSR), which is highly expressed in the brain and also present in key metabolic organs. Ghrelin acylation by ghrelin O-acyltransferase (GOAT) is required for receptor binding and biological activity. This review examines the physiological and pathophysiological roles of ghrelin and liver-expressed antimicrobial peptide 2 (LEAP2), with part…

Ghrelin-based interventions in preclinical models of Parkinson's disease: a systematic review.

Ghrelin plays a crucial role in metabolism and gastrointestinal function. In the central nervous system, ghrelin modulates both hedonic and homeostatic control of eating behavior. Ghrelin promotes neuron survival by reducing apoptosis, inflammation, and oxidative stress, making it a potential therapeutic agent for neurodegenerative diseases. Parkinson's Disease (PD) is a neurodegenerative disease characterized by motor and non-motor symptoms. The motor impairments result primarily from the progressive degeneration of dopaminergic neurons in the substantia nigra pars compacta. Individuals with …

Circulating levels of ghrelin and hyperphagia in patients with rare genetic neurodevelopmental disorders.

CONTEXT: Hyperphagia, overweight, and obesity are frequent in people with rare neurodevelopmental disorders (NDDs). Prader-Willi syndrome (PWS) is a rare NDD with hyperphagia and hyperghrelinemia. OBJECTIVES: To measure ghrelin levels, hyperphagia and caregiver burden in rare NDDs patients to understand pathophysiology and improve care. DESIGN: A single-visit, noninterventional, national, multicenter, cross-sectional study. SETTING: Seven French reference centers for rare NDDs participated. PATIENTS: A total of 130 patients (43% children) with a rare genetic NDD (27 distinct conditions) we…

Metabolomic and proteomic analysis of ghrelin administration in mice infected with Echinococcus granulosus.

Cystic echinococcosis is a zoonotic parasitic disease that induces mechanical compression of liver tissue and subsequent inflammatory responses. ghrelin has protective effects on various liver diseases, including steatosis, chronic inflammation, oxidative stress, and apoptosis. However, its role and potential mechanisms in cystic echinococcosis remain unclear. This study used LC-MS-based metabolomics and proteomics to analyze the impact of ghrelin treatment on mice infected with Echinococcus granulosus sensu lato Metabolomic analysis identified 440 metabolites in the ghrelin-treated group. A t…

Нейропзащитное воздействие грелина на крысиную модель множественных склерозов.

Множественный склероз (MS) является воспалительным заболеванием центральной нервной системы, характеризующимся обезвоживанием и аксонной потерей, и является основной причиной нетравматических неврологических расстройств у молодых людей. Несмотря на то, что существует несколько методов лечения этого заболевания, не существует окончательного средства для лечения множественных склерозов. Известно, что воспаление и окислительный стресс играют важную роль в патофизиологии MS. Грелин, пептид, скрытый желудком, обладает нейрозащитными свойствами по нескольким путям, включая ослабление окислительного

Совпадение в аннотации оригинала
Multiple sclerosis (MS) is an inflammatory central nervous system disease characterized by demyelination and axonal loss and is the main cau … . Inflammation and oxidative stress are known to play important roles in the pathophysiology of MS. Ghrelin, a peptide secreted by the stomach, is reported to have neuroprotective properties through several pathways, including attenuating oxidative stress and inflammation. In the present study cuprizone (CPZ)-induced model of MS was used in Wistar albino …

Association of circulating leptin, growth hormone, and ghrelin with fibromyalgia: A meta-analysis.

OBJECTIVE: The aim of this study was to evaluate the relationship between levels of leptin, growth hormone (GH), and ghrelin in the bloodstream and fibromyalgia. METHODS: We conducted a meta-analysis to compare the serum/plasma levels of leptin, GH, and ghrelin in individuals with fibromyalgia, as compared to healthy controls. The analysis included sixteen articles, which provided data from 697 fibromyalgia patients and 560 controls. RESULTS: The meta-analysis found that there was no significant difference in leptin levels between fibromyalgia patients and controls overall (SMD = 0.324, 95% …

Regulation of peripheral tissue substrate metabolism by the gut-derived hormone ghrelin.

Ghrelin increases in the circulation prior to entrained mealtimes, with the acylated (AG) form functioning to stimulate food intake and growth hormone release. Acutely, AG induces whole-body insulin resistance, potentially to maintain glycemia between meals. Alternatively, chronic administration of both AG and the unacylated isoform of ghrelin (unAG) is associated with improved skeletal muscle insulin sensitivity as well as reduced intramuscular lipids and inflammation. This may be due to effects on lipid metabolism, with ghrelin promoting storage of fat in adipose and liver while stimulating …

A survey of stapling methods to increase affinity, activity, and stability of ghrelin analogues.

The growth hormone secretagogue receptor (GHSR) is a G protein-coupled receptor which regulates various important physiological and pathophysiological processes in the body such as energy homeostasis, growth hormone secretion and regulation of appetite. As a result, it has been postulated as a potential therapeutic target for the treatment of cancer cachexia and other metabolic disorders, as well as a potential imaging agent target for cancers and cardiovascular diseases. Ghrelin is the primary high affinity endogenous ligand for GHSR and has limited secondary structure in solution, which make…

Methodological considerations for ghrelin isoforms assay in clinical evaluation in anorexia nervosa.

The growing interest concerning the role of metabolic sensors in various eating disorders requires the implementation of a strict methodology to collect, store and process blood samples in clinical studies. In particular, measurement of isoforms of the appetite-stimulating hormone, ghrelin, has been challenging in clinical settings. Indeed the acyl ghrelin (AG) isoform is rapidly degraded into desacyl ghrelin (DAG) by blood esterases, thus optimal conditions for the conservation of AG and accurate determination of AG/DAG ratio should be used. Here, we compared different protease inhibitors (Ap…

Elevated ghrelin alters the behavioral effects of perinatal acetaminophen exposure in rats.

A growing body of evidence links prenatal and early postnatal acetaminophen (APAP) exposure to atypical development of brain and behavior. In adult rodents, APAP is known to produce oxidative stress and lower anxiety-related behavior following acute exposure. In models of early-life exposure, APAP has also been shown to alter anxiety-related and other behaviors. Since the neuropeptide ghrelin has been recently shown to reduce oxidative stress markers and act as a neuroprotectant, we hypothesized that exposure to ghrelin prior to exposure to APAP would mitigate the behavioral effects of APAP ex…

Associations of early life stress with leptin and ghrelin in healthy young adults.

BACKGROUND: Childhood adversity is a major risk factor for cardiometabolic health problems. Stress-related changes in diet suggest a role for endocrine factors that influence dietary intake, such as leptin and ghrelin. These hormones influence metabolism and may contribute to the relationship of early adversity, mental, and cardiometabolic health. This study examined levels of leptin and ghrelin in a sample of young adults with and without early life stress (ELS). METHODS: Young adults ages 18-40 (N = 200; 68.5% female) were recruited from the community. Participants with ELS (N = 118) had ch…

Ghrelin level as a biomarker for knee osteoarthritis severity and appearance in HIV + patients.

BACKGROUND: Knee Osteoarthritis (KOA) is a multifactorial disease with several mechanisms to promote articular cartilage damage. New molecules, such as ghrelin, have been recently reported to participate in the pathogenesis and progression of KOA. In HIV + patients, arthralgias are the most frequent musculoskeletal manifestations, mainly affecting joints such as the knee. Also, it has been reported that HIV + patients have a reduction of ghrelin even with treatment compared to HIV- patients. However, there is no report in the literature evaluating ghrelin and KOA in the HIV + population. We ai…

LEAP-2: An Emerging Endogenous Ghrelin Receptor Antagonist in the Pathophysiology of Obesity.

Liver-expressed antimicrobial peptide 2 (LEAP-2), originally described as an antimicrobial peptide, has recently been recognized as an endogenous blocker of growth hormone secretagogue receptor 1a (GHS-R1a). GHS-R1a, also known as ghrelin receptor, is a G protein-coupled receptor (GPCR) widely distributed on the hypothalamus and pituitary gland where it exerts its major functions of regulating appetite and growth hormone (GH) secretion. The activity of GHS-R1a is controlled by two counter-regulatory endogenous ligands: Ghrelin (activation) and LEAP-2 (inhibition). Ghrelin activates GHS-R1a on …

[Nutrition and body composition in young women with various leptin and ghrelin levels].

Body mass and its composition depend on the energy equilibrium due to the consumption of energy-intensive macronutrients and energy expenditure under strict neuroendocrine control. Leptin and ghrelin are the most important regulators of the energy balance; they modulate the redistribution of substrate flows in metabolic pathways. The aim of the research was the assessment of nutrient intake in conjunction with the analysis of body composition and primarily hormonal regulators of energy balance in young women with various body mass index (BMI) values. Material and methods. 88 girls aged 18-22 w…

Hepatoprotective Impact of Ghrelin against Cyclophosphamide-Induced Toxicity in the Male Mice.

BACKGROUND: Despite its vast spectrum of clinical usage, cyclophosphamide (CP) exerts many adverse impacts, including hepatotoxicity. Antioxidant properties of ghrelin might protect the liver from CP-induced toxicity. The current study aimed to assess the protective impacts of ghrelin on CP-induced liver toxicity. METHODS: Forty male mice were randomly divided into four groups (n=10) Group 1 as control received no intervention,group 2 received cyclophosphamide (CP) (100 mg/kg, i.p.) for five weeks and once a week. Group 3 received CP+ghrelin (CP+G), (80 µg/kg daily, i.p.) for five weeks. Grou…