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Leptin, obesity

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https://www.readbyqxmd.com/read/28917230/energy-restriction-combined-with-green-coffee-bean-extract-affects-serum-adipocytokines-and-the-body-composition-in-obese-women
#1
Fatemeh Haidari, Mehnoosh Samadi, Majid Mohammadshahi, Mohammad Taha Jalali, Kambiz Ahmadi Engali
BACKGROUND AND OBJECTIVES: Obesity has become a public health problem and is a cause of some preventable illnesses. Among several methods for treating obesity, the use of food supplements is highly common. A commonly used food supplement is green coffee bean extract. The objective of this study was to evaluate the efficacy of green coffee bean extract combined with an energy-restricted diet on the body composition and serum adipocytokines in obese women. METHODS AND STUDY DESIGN: In this randomised clinical trial, 64 obese women aged 20-45 years were selected and divided into two groups: an intervention group (receiving 400 mg green coffee bean extract for 8 weeks) and control group (receiving placebo)...
2017: Asia Pacific Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28917185/ghrelin-and-hypothalamic-npy-agrp-expression-in-mice-are-affected-by-chronic-early-life-stress-exposure-in-a-sex-specific-manner
#2
K Y Yam, S R Ruigrok, I Ziko, S N De Luca, P J Lucassen, S J Spencer, A Korosi
Early-life stress (ES) is a risk factor for metabolic disorders (e.g. obesity) with a notoriously higher prevalence in women compared to men. However, mechanisms underlying these effects remain elusive. The development of the hypothalamic feeding and metabolic regulatory circuits occurs mostly in the early sensitive postnatal phase in rodents and is tightly regulated by the metabolic hormones leptin and ghrelin. We have previously demonstrated that chronic ES reduces circulating leptin and alters adipose tissue metabolism early and later in life similarly in both sexes...
September 7, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28914596/obesity-and-periodontitis-an-experimental-study-to-evaluate-the-periodontal-and-systemic-effects-of-the-co-morbidity
#3
Leire Virto, Pilar Cano, Vanesa Jiménez-Ortega, Pilar Fernández-Mateos, Jerián González, Ana Isabel Esquifino, Mariano Sanz
BACKGROUND: Obesity and overweight have been associated with periodontitis. This study aims to evaluate the periodontal and systemic effects of this association in a validated experimental model. METHODS: 28 male Wistar rats were randomly divided in four groups: control group (Con) (fed with standard diet); high-fat diet group (HFD) (fed with a diet containing 35.2% fat); control group with induced periodontitis (Con-Perio) and HFD group with induced periodontitis (HFD-Perio)...
September 15, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28914195/polymorphism-rs9939609-of-fat-mass-and-obesity-associated-gene-correlation-with-leptin-level-of-obese-women-suffered-from-type-2-diabetes
#4
Mehdi Niknam Moghanloo, Naser Aga Mohammadzadeh, Hajie Lotfi, Rasoul Mahmoudi, Maryam Abbasi, Farzaneh Ghafarian Alipour, Fatemeh Shool, Sadegh Porfar, Nosratollah Zarghami
Background Recent studies reported that Fat Mass and obesity-associated gene (FTO) single nucleotides polymorphisms (SNPs), especially rs9939609, have association with obesity and type 2 diabetes mellitus. On the other hand, many researches confirmed that leptin, an adipocytokine, is related to the obesity and body mass index (BMI) in patients who suffered from type 2 diabetes(T2DM). Objective In this study, the correlation of FTO rs9939609 polymorphism and leptin level was investigated in the obese women who suffered from T2DM...
September 15, 2017: Current Diabetes Reviews
https://www.readbyqxmd.com/read/28913358/central-modulation-of-neuroinflammation-by-neuropeptides-and-energy-sensing-hormones-during-obesity
#5
REVIEW
Roger Maldonado-Ruiz, Lizeth Fuentes-Mera, Alberto Camacho
Central nervous system (CNS) senses energy homeostasis by integrating both peripheral and autonomic signals and responding to them by neurotransmitters and neuropeptides release. Although it is previously considered an immunologically privileged organ, we now know that this is not so. Cells belonging to the immune system, such as B and T lymphocytes, can be recruited into the CNS to face damage or infection, in addition to possessing resident immunological cells, called microglia. In this way, positive energy balance during obesity promotes an inflammatory state in the CNS...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28912580/ptprj-inhibits-leptin-signaling-and-induction-of-ptprj-in-the-hypothalamus-is-a-cause-of-the-development-of-leptin-resistance
#6
Takafumi Shintani, Satoru Higashi, Ryoko Suzuki, Yasushi Takeuchi, Reina Ikaga, Tomomi Yamazaki, Kenta Kobayashi, Masaharu Noda
Leptin signaling in the hypothalamus plays a crucial role in the regulation of body weight. Leptin resistance, in which leptin signaling is disrupted, is a major obstacle to the improvement of obesity. We herein demonstrated that protein tyrosine phosphatase receptor type J (Ptprj) is expressed in hypothalamic neurons together with leptin receptors, and that PTPRJ negatively regulates leptin signaling by inhibiting the activation of JAK2, the primary tyrosine kinase in leptin signaling, through the dephosphorylation of Y813 and Y868 in JAK2 autophosphorylation sites...
September 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28911169/obesity-induced-infertility-in-male-mice-is-associated-with-disruption-of-crisp4-expression-and-sperm-fertilization-capacity
#7
Beatriz C Borges, David Garcia-Galiano, Sanseray da Silveira Cruz-Machado, Xingfa Han, Galina B Gavrilina, Thomas L Saunders, Richard J Auchus, Saher S Hammoud, Gary D Smith, Carol F Elias
Approximately 15% of human couples of reproductive age have impaired fertility, and the male component accounts for about half of these cases. The etiology is usually unknown, but high correlation with the increase in obesity rates is documented. In this study, we show that diet-induced and genetically obese mice display copulatory behavior comparable to controls, but the number of females impregnated by obese males is remarkably low. Screening for changes in gene expression in the male reproductive tract showed decreased Crisp4 expression in testis and epididymis of obese mice...
September 1, 2017: Endocrinology
https://www.readbyqxmd.com/read/28904917/evaluation-of-leptin-as-a-marker-of-insulin-resistance-in-type-2-diabetes-mellitus
#8
Thiyagarajan Manjuladevi Moonishaa, Sunil Kumar Nanda, Muthukrishnan Shamraj, Rajendran Sivaa, Periyasamy Sivakumar, Kandasamy Ravichandran
BACKGROUND: Type 2 diabetes mellitus (T2DM) is a leading cause of mortality and morbidity worldwide, whose incidence is rapidly increasing in India. T2DM is caused by varying degrees of insulin resistance (IR) and relative insulin deficiency. Leptin, an adipokine with the primary function of regulating energy balance, is found to mediate insulin secretion and sensitivity in peripheral tissues. Hence, we aimed to determine the role of leptin in the development of IR in newly diagnosed T2DM patients...
July 2017: International Journal of Applied and Basic Medical Research
https://www.readbyqxmd.com/read/28904569/serum-insulin-and-leptin-levels-in-children-with-epilepsy-on-valproate-associated-obesity
#9
Talha Rehman, Deepak Sachan, Anubhuti Chitkara
BACKGROUND: Weight gain is a common adverse effect of sodium valproic acid (VPA) in children with epilepsy. Several mechanisms of VPA-induced obesity have been suggested such as increased appetite, facultative thermogenesis, and elevated insulin and leptin levels. In this study, we aimed to investigate the role of Insulin and Leptin in the pathogenesis of weight gain caused by VPA. MATERIALS AND METHODS: Body mass index (BMI) was calculated, and serum insulin and leptin levels were measured in 45 consecutive patients and 45 controls...
April 2017: Journal of Pediatric Neurosciences
https://www.readbyqxmd.com/read/28904060/early-exposure-to-a-high-fat-high-sugar-diet-increases-the-mammary-stem-cell-compartment-and-mammary-tumor-risk-in-female-mice
#10
Isabel U Lambertz, Linjie Luo, Thomas R Berton, Scott L Schwartz, Stephen D Hursting, Claudio J Conti, Robin Fuchs-Young
Obesity and alterations in metabolic programming from early diet exposures can affect the propensity to disease in later life. Through dietary manipulation, developing mouse pups were exposed to a hyperinsulinemic, hyperglycemic milieu during three developmental phases: gestation, lactation and post-weaning. Analyses showed that a post-weaning high fat/high sugar (HF/HS) diet had the main negative effect on adult body weight, glucose tolerance and insulin resistance. However, dimethylbenz[a]anthracene (DMBA)-induced carcinogenesis revealed that animals born to a mother fed a HF/HS gestation diet, nursed by a mother on a mildly diet-restricted, low fat/low sugar diet (DR) and weaned onto a HF/HS diet (HF/DR/HF) had the highest mammary tumor incidence, while HF/HF/DR had the lowest tumor incidence...
September 13, 2017: Cancer Prevention Research
https://www.readbyqxmd.com/read/28904022/pi3k%C3%AE-ablation-does-not-promote-diabetes-in-db-db-mice-but-improves-insulin-sensitivity-and-reduces-pancreatic-%C3%AE-cell-apoptosis
#11
Ludovic Breasson, Claudia Sardi, Barbara Becattini, Fabio Zani, Giovanni Solinas
PI3Kγ has emerged as a promising target for the treatment of obesity and insulin resistance; however, previous studies have indicated that PI3Kγ activity in pancreatic β-cells is required for normal insulin secretion in response to glucose. Hence, a possible deterioration of insulin secretion capacity in patients who are predisposed to the failure of pancreatic β-cell function is a major concern for the pharmacologic inhibition of PI3Kγ. To address this issue, we investigated the effects of PI3Kγ ablation in db/db diabetic mice, a genetic model of obesity-driven β-cell failure and diabetes...
September 13, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28904020/gtrap3-18-regulates-food-intake-and-body-weight-by-interacting-with-pro-opiomelanocortin
#12
Koji Aoyama, Wattanaporn Bhadhprasit, Masahiko Watabe, Fan Wang, Nobuko Matsumura, Toshio Nakaki
Pro-opiomelanocortin (POMC)-expressing neurons provide α-melanocyte-stimulating hormone (α-MSH), which stimulates melanocortin 4 receptor to induce hypophagia by AMPK inhibition in the hypothalamus. α-MSH is produced by POMC cleavage in secretory granules and released. However, it is not known yet whether any posttranscriptional regulatory mechanism of POMC signaling exists upstream of the secretory granules in neurons. Here we show that glutamate transporter-associated protein 3-18 (GTRAP3-18), an anchor protein that retains interacting proteins in the endoplasmic reticulum, is a critical regulator of food intake and body weight by interacting with POMC...
September 13, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28901521/adiponectin-receptor-agonist-adiporon-suppresses-adipogenesis-in-c3h10t1-2-cells-through-the-adenosine-monophosphate%C3%A2-activated-protein-kinase-signaling-pathway
#13
Shu-Juan Wang, Wen-Yi Lu, Kai-Yan Liu
The aim of the present study was to investigate the effects of AdipoRon, an adiponectin receptor agonist, on adipogenesis in C3H10T1/2 cells and to explore the underlying mechanisms. C3H10T1/2 cells were treated with increasing doses of AdipoRon for 8 days, and Oil Red O staining was used to assess lipid accumulation. The protein and mRNA expression levels of adipogenic transcription factors and adipocyte‑specific genes were examined by western blotting and reverse transcription quantitative polymerase chain reaction, respectively...
September 8, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28900314/evaluation-of-metabolic-syndrome-and-related-factors-in-children-affected-by-acute-lymphoblastic-leukemia
#14
Soheila Zareifar, Sezaneh Haghpanah, Eslam Shorafa, Nader Shakibazad, Zohreh Karamizadeh
INTRODUCTION: Obesity is among the medical problems in survivors of childhood acute lymphoblastic leukemia (ALL). These patients are at risk of metabolic syndrome (MS). The present study aimed to follow the patients with ALL regarding the incidence of MS. PATIENTS AND METHODS: This study was conducted on all patients who referred to the oncology clinic from July 2012 to July 2013. The exclusion criteria of the study were ALL relapse, secondary malignancy, hypothyroidism, Down syndrome, and below 2 years of age...
April 2017: Indian Journal of Medical and Paediatric Oncology
https://www.readbyqxmd.com/read/28899889/neck-circumference-and-clustered-cardiovascular-risk-factors-in-children-and-adolescents-cross-sectional-study
#15
José Castro-Piñero, Alvaro Delgado-Alfonso, Luis Gracia-Marco, Sonia Gómez-Martínez, Irene Esteban-Cornejo, Oscar L Veiga, Ascensión Marcos, Víctor Segura-Jiménez
OBJECTIVE: Early detection of cardiovascular disease (CVD) risk factors, such as obesity, is crucial to prevent adverse long-term effects on individuals' health. Therefore, the aims were: (1) to explore the robustness of neck circumference (NC) as a predictor of CVD and examine its association with numerous anthropometric and body composition indices and (2) to release sex and age-specific NC cut-off values to classify youths as overweight/obese. DESIGN: Cross-sectional study...
September 11, 2017: BMJ Open
https://www.readbyqxmd.com/read/28895540/polymorphism-rs3123554-in-the-cannabinoid-receptor-gene-type-2-cnr2-reveals-effects-on-body-weight-and-insulin-resistance-in-obese-subjects
#16
Daniel Antonio de Luis, Olatz Izaola, David Primo, Beatriz de la Fuente, Rocio Aller
BACKGROUND: Few studies assessing the relationship between single nucleotide polymorphisms in CNR2 and obesity or its related metabolic parameters are available. OBJECTIVE: To investigate the influence of polymorphism rs3123554 in the CNR2 receptor gene on obesity anthropometric parameters, insulin resistance, and adipokines in subjects with obesity. DESIGN: The study population consisted of 1027 obese subjects, who were performed bioelectrical impedance analyses, blood pressure measurements, serial assessments of dietary intake during three days, and biochemical tests...
October 2017: Endocrinología, diabetes y nutrición
https://www.readbyqxmd.com/read/28894445/adipose-tissue-inflammation-induces-b-cell-inflammation-and-decreases-b-cell-function-in-aging
#17
REVIEW
Daniela Frasca, Bonnie B Blomberg
Aging is the greatest risk factor for developing chronic diseases. Inflamm-aging, the age-related increase in low-grade chronic inflammation, may be a common link in age-related diseases. This review summarizes recent published data on potential cellular and molecular mechanisms of the age-related increase in inflammation, and how these contribute to decreased humoral immune responses in aged mice and humans. Briefly, we cover how aging and related inflammation decrease antibody responses in mice and humans, and how obesity contributes to the mechanisms for aging through increased inflammation...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28894291/neural-predictors-of-12-month-weight-loss-outcomes-following-bariatric-surgery
#18
L M Holsen, P Davidson, H Cerit, T Hye, P Moondra, F Haimovici, S Sogg, S Shikora, J M Goldstein, A E Evins, L E Stoeckel
BACKGROUND/OBJECTIVES: Despite the effectiveness of bariatric surgery, there is still substantial variability in long-term weight outcomes and few factors with predictive power to explain this variability. Neuroimaging may provide a novel biomarker with utility beyond other commonly used variables in bariatric surgery trials to improve prediction of long-term weight-loss outcomes. The purpose of this study was to evaluate the effects of sleeve gastrectomy (SG) on reward and cognitive control circuitry postsurgery and determine the extent to which baseline brain activity predicts weight loss at 12-month postsurgery...
August 14, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28893745/a-new-risk-locus-in-chchd5-for-hypertension-and-obesity-in-a-chinese-child-population-a-cohort-study
#19
Lijun Wu, Liwang Gao, Xiaoyuan Zhao, Meixian Zhang, Jianxin Wu, Jie Mi
OBJECTIVE: Coiled-coil-helix-coiled-coil-helix domain containing 5 (CHCHD5), a mitochondrial protein, is involved in the oxidative folding process in the mitochondrial intermembrane space. A previous study identified a hypertension-related single nucleotide polymorphism (SNP), rs3748024, in CHCHD5 in adults, but there are no reports regarding the association between CHCHD5 and obesity, which is a known risk factor for hypertension. The aim of the present study is to investigate the associations of the SNP rs3748024 with hypertension and obesity...
September 11, 2017: BMJ Open
https://www.readbyqxmd.com/read/28893589/leptin-status-alters-buprenorphine-induced-antinociception-in-obese-mice-with-dysfunctional-leptin-receptors
#20
Zachary Glovak, Sara Mihalko, Helen A Baghdoyan, Ralph Lydic
Buprenorphine is an opiate used for pain management and to treat opiate addiction. The cytokine leptin can modulate nociception, but the extent to which buprenorphine-induced antinociception varies as a function of leptin signaling has not been characterized. Four congenic mouse lines with phenotypes that include differences in body weight and leptin status were used to test the hypothesis that the antinociceptive effects of buprenorphine vary as function of sex and leptin signaling. Each mouse line was comprised of males (n=12) and females (n=12) for a total of 96 animals...
September 8, 2017: Neuroscience Letters
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