39,006 results match your criteria leptin


Identification of CXCL12-abundant reticular cells in human adult bone marrow.

Br J Haematol 2021 Apr 10. Epub 2021 Apr 10.

Laboratory of Stem Cell Biology and Developmental Immunology, Immunology Frontier Research Center, World Premier International Research Center (WPI), Graduate School of Frontier Biosciences, Graduate School of Medicine, Osaka University, Suita, Japan.

A population of mesenchymal stem cells, termed CXC chemokine ligand (CXCL)12-abundant reticular (CAR) cells or leptin receptor-expressing cells, are the major cellular component of niches for haematopoietic stem cells (HSCs) in murine bone marrow. CAR cells are characterized by several salient features, including much higher expression of CXCL12, stem cell factor (SCF), forkhead box C1 (FOXC1) and early B-cell factor 3 (EBF3), which are essential for HSC maintenance, than other cells. However, the human counterpart of CAR cells has not been fully described. Read More

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Anti-adipogenic and lipid-lowering activity of piperine and epigallocatechin gallate in 3T3-L1 adipocytes.

Arch Physiol Biochem 2021 Apr 9:1-8. Epub 2021 Apr 9.

Division of Cell Culture and Molecular Biology, Department of Biochemistry, Sri Venkateswara University, Tirupati, India.

The present study was aimed to evaluate the anti-adipogenic activity of piperine (PIP) and epigallocatechin gallate (EGCG) in 3T3-L1 cells. In cytotoxicity studies, PIP and EGCG showed IC values of 260 and 218 µM respectively and in combination (20 µM each) did not show cytotoxicity. Treatment with PIP and EGCG (20 µM each) significantly (<. Read More

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The effect of Gestational Diabetes Mellitus on the fetal compartment.

J Reprod Immunol 2021 Mar 24;145:103314. Epub 2021 Mar 24.

Departamento de Obstetrícia, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM-UNIFESP), Rua Pedro de Toledo 669, 9 andar - 04939032, São Paulo, SP, Brazil. Electronic address:

In indicated preterm births such a Gestational Diabetes Mellitus (GDM), little is known about the role of the amnion membranes. Investigating the role of amnion membrane inflammation in response GDM may suggest novel pathophysiologic mechanisms. We hypothesize that increased GDM inflammatory mediators may weaken the amnion membrane predisposing them to infection. Read More

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Pro- and anti-inflammatory adipokines are associated with cardiometabolic risk markers in Brazilian schoolchildren.

Eur J Pediatr 2021 Apr 9. Epub 2021 Apr 9.

Department of Nutrition and Health, Universidade Federal de Viçosa, Av. P.H. Rolfs s/n, Centro de Ciências Biológicas II, Campus Universitário, Viçosa, Minas Gerais, 36570-900, Brazil.

Pro- and anti-inflammatory adipokines have been regarded as potential markers of obesity and cardiometabolic comorbidities. However, few studies have evaluated this association in children. We aimed to evaluate the relationship between adipokine concentrations and cardiometabolic risk markers in Brazilian schoolchildren. Read More

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Autocrine IGF2 programmes β-cell plasticity under conditions of increased metabolic demand.

Sci Rep 2021 Apr 8;11(1):7717. Epub 2021 Apr 8.

Metabolic Research Laboratories and MRC Metabolic Diseases Unit, Institute of Metabolic Science, Addenbrookes Hospital, University of Cambridge, Cambridge, CB2 0QQ, UK.

When exposed to nutrient excess and insulin resistance, pancreatic β-cells undergo adaptive changes in order to maintain glucose homeostasis. The role that growth control genes, highly expressed in early pancreas development, might exert in programming β-cell plasticity in later life is a poorly studied area. The imprinted Igf2 (insulin-like growth factor 2) gene is highly transcribed during early life and has been identified in recent genome-wide association studies as a type 2 diabetes susceptibility gene in humans. Read More

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AGO HITS-CLIP reveals distinct miRNA regulation of white and brown adipose tissue identity.

Genes Dev 2021 Apr 8. Epub 2021 Apr 8.

Laboratory of Molecular Metabolism, The Rockefeller University, New York, New York 10065, USA.

MicroRNAs (miRNAs) are short, noncoding RNAs that associate with Argonaute (AGO) to influence mRNA stability and translation, thereby regulating cellular determination and phenotype. While several individual miRNAs have been shown to control adipocyte function, including energy storage in white fat and energy dissipation in brown fat, a comprehensive analysis of miRNA activity in these tissues has not been performed. We used high-throughput sequencing of RNA isolated by cross-linking immunoprecipitation (HITS-CLIP) to comprehensively characterize the network of high-confidence, in vivo mRNA:miRNA interactions across white and brown fat, revealing >20,000 unique AGO binding sites. Read More

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An alternative approach to treat obesity with leptogenic polyherbal formulation obesecure: A randomized clinical trial study.

Pak J Pharm Sci 2020 Sep;33(5(Special)):2423-2430

College of Conventional Medicine, The Islamia University of Bahawalpur, Bahawalpur, Pakistan.

Obesity is a common disease of developing countries, including Pakistan. Obesity is a risk factor for many diseases which can be life threatening or making the person unable to perform daily routine work. In the current study, clinical trials were designed to evaluate the effects of medical intervention by comparing the effects of placebo control drug "Plasicure" with the herbal medicinal formulation "Obesecure". Read More

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September 2020

Glucagon-Like Peptide-1 Receptor Agonists (GLP-1RAs) improve biomarkers of inflammation and oxidative stress: A systematic review and meta-analysis of randomised controlled trials.

Diabetes Obes Metab 2021 Apr 8. Epub 2021 Apr 8.

Department of Diabetes & Endocrinology, Morriston Hospital, Swansea Bay University Health Board, Swansea.

Aims: Glucagon-Like Peptide-1 Receptor Agonists (GLP-1RAs) have cardiorenal protective properties in patients with type 2 diabetes (T2DM) that are not fully understood. Inflammation and oxidative stress play a role in the pathogenesis of T2DM and its associated cardiorenal complications. Anti-inflammatory and antioxidant properties may contribute towards explaining the beneficial effects of GLP-1RAs. Read More

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Dietary Selenium Requirement for the Prevention of Glucose Intolerance and Insulin Resistance in Middle-Aged Mice.

J Nutr 2021 Apr 8. Epub 2021 Apr 8.

Department of Food Science, Nutrition, and Health Promotion, Mississippi State University, Mississippi State, MS, USA.

Background: Although dietary selenium (Se) deficiency or excess induces type 2 diabetes-like symptoms in mice, suboptimal body Se status usually causes no symptoms but may promote age-related decline in overall health.

Objectives: We sought to determine the dietary Se requirement for protection against type 2 diabetes-like symptoms in mice.

Methods: Thirty mature (aged 4 mo) male C57BL/6J mice were fed a Se-deficient torula yeast AIN-93M diet supplemented with Na2SeO4 in graded concentrations totaling 0. Read More

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Leptin and dorsomedial hypothalamus: is not all about feeding and energy homeostasis.

Authors:
Silvia V Conde

Sleep 2021 Apr 8. Epub 2021 Apr 8.

iNOVA4Health, CEDOC, NOVA Medical School, NMS, Faculdade Ciências Médicas, Universidade Nova de Lisboa, Lisboa, Portugal.

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[Population-based Study of the Effects of Adiponectin, Leptin and Soluble Leptin Receptor on Risks for Breast Cancer].

Sichuan Da Xue Xue Bao Yi Xue Ban 2021 Mar;52(2):259-266

Department of Epidemiology and Biostatistics, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu 610041, China.

Objective: To explore the individual or combined effects of adiponectin, leptin, and soluble leptin receptor (sOB-R) on risks for premenopausal and postmenopausal breast cancer, and to provide evidence for revealing the molecular mechanism between obesity and breast cancer.

Methods: 469 newly-diagnosed breast cancer cases were sequentially recruited for the study and 469 age-frequency-matched healthy women were enrolled as the controls over the same period of time. The participant baseline information was collected with questionnaires, and plasmic levels of adiponectin, leptin and sOB-R were checked with ELISA. Read More

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Consumption of vitamin A-deficient diet elevates endoplasmic reticulum stress marker and suppresses high fructose-induced orexigenic gene expression in the brain of male Wistar rats.

Nutr Neurosci 2021 Apr 8:1-9. Epub 2021 Apr 8.

Lipid Biochemistry Division, ICMR-National Institute of Nutrition, Hyderabad, Telangana, India.

Objective: Here, we assessed the impact of vitamin A deficiency (both alone and in combination with fructose) on the retinol status, phospholipids fatty acid composition and pathways associated with the endoplasmic reticulum (ER) stress and energy homeostasis of the brain. For this purpose, weanling male Wistar rats were divided into four groups consisting of 8 rats each, except 16 for the second group and they received one of the following diets; control, vitamin A-deficient (VAD), high fructose (HFr) and HFr with VAD for 16 weeks, except half of the VAD diet-fed rats, were shifted to HFr diet, after 8 weeks period.

Results: The retinol content of the whole brain remained comparable across the groups, despite a significant reduction in the plasma at the end of VAD diet feeding. Read More

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Bariatric surgery improves clinical outcomes and adiposity biomarkers but not inflammatory cytokines SAA and MCP-1 after a six-month follow-up.

Scand J Clin Lab Invest 2021 Apr 7:1-7. Epub 2021 Apr 7.

Departamento de Análises Clínicas, Centro de Ciências da Saúde, Universidade Federal de Santa Catarina, Florianópolis, SC, Brasil.

Obesity is a global health problem and is associated with a chronic low-grade inflammatory state. Surgical obesity treatment is being increasingly common due to its efficacy. From this, we evaluate the metabolic state improvement and inflammation remission in patients with obesity undergoing bariatric surgery. Read More

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Obesity and its impact on COVID-19.

J Mol Med (Berl) 2021 Apr 6. Epub 2021 Apr 6.

European Research Institute for the Biology of Ageing (ERIBA), University Medical Center Groningen, University of Groningen, 9700, AD, Groningen, The Netherlands.

The severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2) pandemic has proven a challenge to healthcare systems since its first appearance in late 2019. The global spread and devastating effects of coronavirus disease 2019 (COVID-19) on patients have resulted in countless studies on risk factors and disease progression. Overweight and obesity emerged as one of the major risk factors for developing severe COVID-19. Read More

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Leptin, the brain and energy homeostasis: From an apparently simple to a highly complex neuronal system.

Rev Endocr Metab Disord 2021 Apr 6. Epub 2021 Apr 6.

Department of Experimental and Clinical Medicine, Marche Polytechnic University, Via Tronto 10/A, 60020, Ancona, Italy.

Leptin, produced and secreted by white adipose tissue in tight relationship with adipose mass, informs the brain about the status of the energy stores serving as the main peripheral signal for energy balance regulation through interaction with a multitude of highly interconnected neuronal populations. Most obese patients display resistance to the anorectic effect of the hormone. The present review unravels the multiple levels of complexity that trigger hypothalamic response to leptin with the objective of highlighting those critical hubs that, mainly in the hypothalamic arcuate nucleus, may undergo obesity-induced alterations and create an obstacle to leptin action. Read More

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Effect of Leptin Therapy on Survival in Generalized and Partial Lipodystrophy: A Matched Cohort Analysis.

J Clin Endocrinol Metab 2021 Apr 2. Epub 2021 Apr 2.

National Institute of Diabetes & Digestive & Kidney Diseases, Bethesda, MD, USA.

Context: Data quantifying the impact of metreleptin therapy on survival in nonHIVrelated generalized lipodystrophy (GL) and partial lipodystrophy (PL) are unavailable.

Objective: This study aimed to estimate the treatment effect of metreleptin on survival in patients with GL and PL.

Design/setting/patients: Demographic and clinical characteristics were used to match metreleptin-treated and metreleptin-naïve patients with GL and PL. Read More

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Hormonal fine-tuning of clock in decidual region of mouse placenta by dopamine, melatonin, insulin, leptin and ghrelin.

Placenta 2021 Mar 27;108:55-63. Epub 2021 Mar 27.

Laboratory of Biological Rhythms, Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic. Electronic address:

Introduction: The maternal part of the rodent placenta harbors a circadian clock which robustly responds to glucocorticoids, however, its sensitivity to other hormones has not been elucidated. In this study, we tested five selected hormones (dopamine, melatonin, insulin, leptin and ghrelin) for their effectiveness to affect the clock in decidual region of mouse placenta in vitro.

Methods: We administered the hormones or corresponding vehicles at various time points over 24 h to organotypic placental explants of mPer2 mice containing the decidua basalis (DB) region and monitored their effects on amplitude, period, median expression level (mesor) and phase of PER2-driven bioluminescence rhythms. Read More

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Three-dimensional remodeling of functional cerebrovascular architecture and gliovascular unit in leptin receptor-deficient mice.

J Cereb Blood Flow Metab 2021 Apr 4:271678X211006596. Epub 2021 Apr 4.

Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, PA, USA.

The cerebrovascular sequelae of diabetes render victims more susceptible to ischemic stroke, vascular cognitive impairment, and Alzheimer's disease. However, limited knowledge exists on the progressive changes in cerebrovascular structure and functional remodeling in type 2 diabetes. To ascertain the impact of diabetes on whole-brain cerebrovascular perfusion, leptin-receptor-deficient mice were transcardially injected with tomato-lectin before sacrifice. Read More

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Effects of Metreleptin on Patient Outcomes and Quality of Life in Generalized and Partial Lipodystrophy.

J Endocr Soc 2021 Apr 16;5(4):bvab019. Epub 2021 Feb 16.

National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA.

Generalized and partial lipodystrophy are rare and complex diseases with progressive clinical and humanistic burdens stemming from selective absence of subcutaneous adipose tissue, which causes reduced energy storage capacity and a deficiency of adipokines such as leptin. Treatment options were limited before leptin replacement therapy (metreleptin) became available. This retrospective study evaluates both clinical and humanistic consequences of the disease and treatment. Read More

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The PREdictor of MAlnutrition in Systemic Sclerosis (PREMASS) Score: A Combined Index to Predict 12 Months Onset of Malnutrition in Systemic Sclerosis.

Front Med (Lausanne) 2021 17;8:651748. Epub 2021 Mar 17.

National Institute for Health Research (NIHR) Leeds Biomedical Research Centre (BRC), Leeds Teaching Hospitals National Health Service (NHS) Trust and Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, United Kingdom.

Malnutrition is a severe complication in Systemic Sclerosis (SSc) and it is associated with significant mortality. Notwithstanding, there is no defined screening or clinical pathway for patients, which is hampering effective management and limiting the opportunity for early intervention. Here we aim to identify a combined index predictive of malnutrition at 12 months using clinical data and specific serum adipokines. Read More

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Impact of adipose tissue in chronic kidney disease development (Review).

Exp Ther Med 2021 May 23;21(5):539. Epub 2021 Mar 23.

Department of Family Medicine and Clinical Base, Dr. Carol Davila Central Military Emergency University Hospital, 010825 Bucharest, Romania.

Obesity is a worldwide pandemic health issue. Obesity is associated with the pathogenesis of type 2 diabetes, hypertension, dyslipidemia, cardiovascular diseases, cancer, and kidney diseases. This systemic disease can affect the kidneys by two mechanisms: Indirectly through diabetes mellitus (DM) and hypertension and directly through adipokines secreted by adipose tissue. Read More

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Predictive role of altered leptin, adiponectin and 3-carboxy-4-methyl-5-propyl-2-furanpropanoic acid secretion in gestational diabetes mellitus.

Exp Ther Med 2021 May 22;21(5):520. Epub 2021 Mar 22.

Obstetrics and Gynecology I, Mother and Child Department, 'Iuliu Hațieganu' University of Medicine and Pharmacy, 400006 Cluj-Napoca, Romania.

Gestational diabetes mellitus (GDM) is one of the most common complications of pregnancy, leading to considerable maternal and fetal risks. The main aim of this study was to determine the predictive value of the levels of adiponectin (AN), leptin (L) and CMPF (3-carboxy-4-methyl-5-propyl-2-furanpropanoic acid) in the development of GDM. We conducted a prospective longitudinal study on 68 pregnant women that were not at risk of developing GDM, in whom we determined AN, L, CMPF levels at 11-13 weeks +6 days of pregnancy during the first trimester screening. Read More

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Predicting Maternal Serum Adiponectin and Leptin Level as Biomarkers of Pre-eclampsia: A Prospective Study.

J Obstet Gynaecol India 2021 Feb 1;71(1):58-65. Epub 2021 Jan 1.

Department of Biochemistry, V.M.M.C and Safdarjung Hospital, New Delhi, India.

Background: The aim of this study to determine maternal adiponectin and leptin levels as biomarkers of pre-eclampsia and compare adiponectin and leptin ratio.

Materials And Methods: This is a prospective study. The enrolled women were divided into two groups: first, study group ( = 60) comprised of women diagnosed with pre-eclampsia and second, control group ( = 60) comprised of age- and gestation-matched normotensive and nonproteinuric women. Read More

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February 2021

Impact of maternal obesity and prebiotic supplementation on select maternal milk miRNA levels and correlation to offspring outcomes.

Br J Nutr 2021 Apr 5:1-22. Epub 2021 Apr 5.

Faculty of Kinesiology, University of Calgary, 2500 University Drive NW, Calgary, AB, Canada T2N 1N4.

Breastmilk composition varies with maternal factors including diet, and confers health benefits to the neonate; however, the mechanisms mediating this protection remain incompletely understood. Our aim was to investigate the effects of supplementing a maternal high fat/sucrose (HFS) diet with prebiotic oligofructose (OFS) on milk composition in rats and associations with offspring body composition and gut microbiota. Obese Sprague-Dawley dams consumed a control, HFS, HFS+OFS (10% wt/wt) or HFS diet weight-matched to the HFS+OFS group (HFS-WM) during pregnancy and lactation. Read More

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METABOLIC SYNDROME, OVERWEIGHT, HYPERLEPTINEMIA IN CHILDREN AND ADULTS.

Wiad Lek 2021 ;74(2):313-316

DANYLO HALYTSKY LVIV NATIONAL MEDICAL UNIVERSITY, LVIV, UKRAINE.

Objective: The aim: To evaluate anthropometric, hemodynamic parameters, as well as changes in blood and leptin lipid spectrum in children and adults with overweight and obesity.

Patients And Methods: Materials and methods: We examined 68 overweight children and 90 patients with obesity in combination with stage 2, grade 2 AH who were electively inpatient. The control group consisted of practically healthy individuals - 20 adults and 55 children. Read More

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The role of ghrelin and leptin in feeding behavior: Genetic and molecular evidence.

Endocrinol Diabetes Nutr 2021 Mar 31. Epub 2021 Mar 31.

Instituto de Investigaciones en Comportamiento Alimentario y Nutrición, Centro Universitario del Sur, Universidad de Guadalajara, Zapotlán el Grande, Jalisco, México. Electronic address:

Feeding behavior is integrated within a wide variety of eating behaviors, which depend on psychosocial, biological and environmental factors. These types of behavior can cause nutrition-related diseases such as obesity, which affects more than 650 million people worldwide. Ghrelin and leptin are key hormones that regulate appetite, food intake and energy metabolism. Read More

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Effects of carotid baroreceptor stimulation on aortic remodeling in obese rats.

Nutr Metab Cardiovasc Dis 2021 Feb 9. Epub 2021 Feb 9.

Department of Cardiology, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan 430060, People's Republic of China; Cardiovascular Research Institute, Wuhan University, Wuhan 430060, People's Republic of China; Hubei Key Laboratory of Cardiology, Wuhan 430060, People's Republic of China. Electronic address:

Background And Aim: Our previous study found carotid baroreceptor stimulation (CBS) reduces body weight and white adipose tissue (WAT) weight, restores abnormal secretion of adipocytokines and inflammation factors, decreases systolic blood pressure (SBP) by inhibiting activation of sympathetic nervous system (SNS) and renin-angiotensin system (RAS) in obese rats. In this study, we explore effects of CBS on aortic remodeling in obese rats.

Methods And Results: Rats were fed high-fat diet (HFD) for 16 weeks to induce obesity and underwent either CBS device implantation and stimulation or sham operation at 8 weeks. Read More

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February 2021

Multiomic Predictors of Short-Term Weight Loss and Clinical Outcomes During a Behavioral-Based Weight Loss Intervention.

Obesity (Silver Spring) 2021 Apr 3. Epub 2021 Apr 3.

Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA.

Objective: Identifying predictors of weight loss and clinical outcomes may increase understanding of individual variability in weight loss response. We hypothesized that baseline multiomic features, including DNA methylation (DNAme), metabolomics, and gut microbiome, would be predictive of short-term changes in body weight and other clinical outcomes within a comprehensive weight loss intervention.

Methods: Healthy adults with overweight or obesity (n = 62, age 18-55 years, BMI 27-45 kg/m , 75. Read More

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Angiopoietin-Like Growth Factor Involved in Leptin Signaling in the Hypothalamus.

Int J Mol Sci 2021 Mar 26;22(7). Epub 2021 Mar 26.

Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea.

The hypothalamic regulation of appetite governs whole-body energy balance. Satiety is regulated by endocrine factors including leptin, and impaired leptin signaling is associated with obesity. Despite the anorectic effect of leptin through the regulation of the hypothalamic feeding circuit, a distinct downstream mediator of leptin signaling in neuron remains unclear. Read More

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Caspase-Cleaved Keratin 18 Measurements Identified Ongoing Liver Injury after Bariatric Surgery.

J Clin Med 2021 Mar 16;10(6). Epub 2021 Mar 16.

Department of Gastroenterology, Justus Liebig University, D-35392 Giessen, Germany.

Bariatric surgery has emerged as an effective treatment option in morbidly obese patients with non-alcoholic fatty liver disease (NAFLD). However, worsening or new onset of non-alcoholic steatohepatitis (NASH) and fibrosis have been observed. Caspase-cleaved keratin 18 (ccK18) has been established as a marker of hepatocyte apoptosis, a key event in NASH development. Read More

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