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https://www.readbyqxmd.com/read/28821446/diet-induced-obesity-alters-memory-consolidation-in-female-rats
#1
P Zanini, B D Arbo, G Niches, D Czarnabay, F Benetti, M F Ribeiro, A L Cecconello
Obesity is a multifactorial disease characterized by the abnormal or excessive fat accumulation, which is caused by an energy imbalance between consumed and expended calories. Obesity leads to an inflammatory response that may result in peripheral and central metabolic changes, including insulin and leptin resistance. Insulin and leptin resistance have been associated with metabolic and cognitive dysfunctions. Obesity and some neurodegenerative diseases that lead to dementia affect mainly women. However, the effects of diet-induced obesity on memory consolidation in female rats are poorly understood...
August 15, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28821417/single-species-versus-dual-species-probiotic-supplementation-as-an-emerging-therapeutic-strategy-for-obesity
#2
G Karimi, R Jamaluddin, N Mohtarrudin, Z Ahmad, H Khazaai, M Parvaneh
BACKGROUND AND AIM: Recent studies have reported beneficial effects of specific probiotics on obesity. However, the difference in the anti-obesity effects of probiotics as single species and dual species is still uncertain. Therefore, we aimed to compare the efficacy of single and dual species of bacteria on markers of obesity in high-fat diet-induced obese rats. METHODS AND RESULTS: A total of 40 male Sprague-Dawley rats were assigned to one of five groups of varying diets as follows: standard diet, high fat diet (HFD), HFD supplemented with Lactobacillus casei strain Shirota, HFD supplemented with Bifidobacterium longum and HFD supplemented with a mixture of these two bacterial species...
July 8, 2017: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
https://www.readbyqxmd.com/read/28820912/impact-of-novel-palmitoylated-prolactin-releasing-peptide-analogs-on-metabolic-changes-in-mice-with-diet-induced-obesity
#3
Veronika Pražienková, Martina Holubová, Helena Pelantová, Martina Bugáňová, Zdenko Pirník, Barbora Mikulášková, Andrea Popelová, Miroslava Blechová, Martin Haluzík, Blanka Železná, Marek Kuzma, Jaroslav Kuneš, Lenka Maletínská
Analogs of anorexigenic neuropeptides, such as prolactin-releasing peptide (PrRP), have a potential as new anti-obesity drugs. In our previous study, palmitic acid attached to the N-terminus of PrRP enabled its central anorexigenic effects after peripheral administration. In this study, two linkers, γ-glutamic acid at Lys11 and a short, modified polyethylene glycol at the N-terminal Ser and/or Lys11, were applied for the palmitoylation of PrRP31 to improve its bioavailability. These analogs had a high affinity and activation ability to the PrRP receptor GPR10 and the neuropeptide FF2 receptor, as well as short-term anorexigenic effect similar to PrRP palmitoylated at the N-terminus...
2017: PloS One
https://www.readbyqxmd.com/read/28819795/leptin-regulation-of-synaptic-function-at-hippocampal-ta-ca1-and-sc-ca1-synapses-implications-for-health-and-disease
#4
Gemma McGregor, Jenni Harvey
Growing evidence indicates that the endocrine hormone leptin regulates hippocampal synaptic function in addition to its established role as a hypothalamic satiety signal. Indeed, numerous studies show that leptin facilitates the cellular events that underlie hippocampal learning and memory including activity-dependent synaptic plasticity and glutamate receptor trafficking, indicating that leptin may be a potential cognitive enhancer. Although there has been extensive investigation into the modulatory role of leptin at hippocampal Schaffer collateral (SC)-CA1 synapses, recent evidence indicates that leptin also potently regulates excitatory synaptic transmission at the anatomically distinct temporoammonic (TA) input to hippocampal CA1 neurons...
August 18, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28818457/relationship-between-sleep-duration-and-childhood-obesity-systematic-review-including-the-potential-underlying-mechanisms
#5
R Felső, S Lohner, K Hollódy, É Erhardt, D Molnár
AIM: The prevalence of obesity is continually increasing worldwide. Determining risk factors for obesity may facilitate effective preventive programs. The present review focuses on sleep duration as a potential risk factor for childhood obesity. The aim is to summarize the evidence on the association of sleep duration and obesity and to discuss the underlying potential physiological and/or pathophysiological mechanisms. DATA SYNTHESIS: The Ovid MEDLINE, Scopus and Cochrane Central Register of Controlled Trials (CENTRAL) databases were searched for papers using text words with appropriate truncation and relevant indexing terms...
July 25, 2017: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
https://www.readbyqxmd.com/read/28817652/metabolomics-reveals-an-entanglement-of-fasting-leptin-concentrations-with-fatty-acid-oxidation-and-gluconeogenesis-in-healthy-children
#6
Franca Fabiana Kirchberg, Stephanie Brandt, Anja Moß, Wolfgang Peissner, Wolfgang Koenig, Dietrich Rothenbacher, Hermann Brenner, Berthold Koletzko, Christian Hellmuth, Martin Wabitsch
BACKGROUND: Leptin and adiponectin communicate with organ systems in order to regulate energetic and metabolic homeostasis. Their different points of action have been well characterized; however, no study has investigated their interrelationship with the metabolism at the molecular level in vivo. OBJECTIVE: To examine the associations of leptin and adiponectin with the metabolic profile reflecting the intercellular and interorgan communication as well as activated metabolic pathways...
2017: PloS One
https://www.readbyqxmd.com/read/28816988/relationship-between-serum-adipokine-levels-and-radiographic-progression-in-patients-with-ankylosing-spondylitis-a-preliminary-2-year-longitudinal-study
#7
Ji-Heh Park, Seung-Geun Lee, Yun-Kyung Jeon, Eun-Kyoung Park, Young-Sun Suh, Hyun-Ok Kim
The immunomodulatory effects of adipokines have been extensively studied in rheumatic diseases, and there is a paucity of information regarding their effects on bone metabolism.The aim of this study was to investigate the relationships between serum adipokines levels and radiographic progression over 2 years in patients with ankylosing spondylitis (AS).In this preliminary longitudinal study, we prospectively recruited 20 consecutive male patients with AS and 11 gender- and age-matched healthy subjects. At the baseline and 2-year follow-up, serum adiponectin, leptin, resistin, tumor necrosis factor-alpha (TNF-α), interleukin (IL)-6, and Dickkopf-1(DKK-1) levels were measured in AS patients using enzyme-linked immunosorbent assays; these measurements were only performed at the baseline for healthy controls...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28814950/morinda-citrifolia-l-leaf-extract-prevent-weight-gain-in-sprague-dawley-rats-fed-a-high-fat-diet
#8
Najla Gooda Sahib Jambocus, Amin Ismail, Alfi Khatib, Fawzi Mahomoodally, Nazamid Saari, Muhammad Waseem Mumtaz, Azizah Abdul Hamid
Background: Morinda citrifolia L. is widely used as a folk medicinal food plant to manage a panoply of diseases, though no concrete reports on its potential anti-obesity activity. This study aimed to evaluate the potential of M. citrifolia leaf extracts (MLE60) in the prevention of weight gain in vivo and establish its phytochemical profile. Design: Male Sprague-Dawley rats were divided into groups based on a normal diet (ND) or high fat diet (HFD), with or without MLE60 supplementation (150 and 350 mg/kg body weight) and assessed for any reduction in weight gain...
2017: Food & Nutrition Research
https://www.readbyqxmd.com/read/28811937/association-between-salivary-leptin-levels-and-taste-perception-in-children
#9
Lénia Rodrigues, Rosa Espanca, Ana Rodrigues Costa, Célia Miguel Antunes, Clarinda Pomar, Fernando Capela-Silva, Cristina Conceição Pinheiro, Francisco Amado, Elsa Lamy
The satiety inducing hormone leptin acts not only at central nervous system but also at peripheral level. Leptin receptors are found in several sense related organs, including the mouth. A role of leptin in sweet taste response has been suggested but, until now, studies have been based on in vitro experiments, or in assessing the levels of the hormone in circulation. The present study investigated whether the levels of leptin in saliva are related to taste perception in children and whether Body Mass Index (BMI) affects such relationship...
2017: Journal of Nutrition and Metabolism
https://www.readbyqxmd.com/read/28811502/sex-steroid-hormones-regulate-leptin-transcript-accumulation-and-protein-secretion-in-3t3-l1-cells
#10
Mónica Z Jenks, Heather E Fairfield, Erik C Johnson, Ron F Morrison, Gloria K Muday
Leptin is an adipokine produced by fat cells that regulates food consumption and metabolic activity. Sexual dimorphism in leptin and fat stores have been observed in humans and rodents with females having more leptin and greater levels of subcutaneous fat than males. One potential mechanism leading to this dimorphism is steroid hormone regulated synthesis of transcripts encoding leptin. Identification of direct regulatory mechanisms is difficult in animals or primary adipocytes due to these intertwined dimorphisms...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811491/high-fat-diet-induced-acceleration-of-osteoarthritis-is-associated-with-a-distinct-and-sustained-plasma-metabolite-signature
#11
Poulami Datta, Yue Zhang, Alexa Parousis, Anirudh Sharma, Evgeny Rossomacha, Helal Endisha, Brian Wu, Izabela Kacprzak, Nizar N Mahomed, Rajiv Gandhi, Jason S Rockel, Mohit Kapoor
Metabolic changes induced by high fat diet (HFD) that contribute to osteoarthritis (OA) are poorly understood. We investigated longitudinal changes to metabolites and their contribution to OA pathogenesis in response to HFD. HFD-fed mice exhibited acceleration of spontaneous age-related and surgically-induced OA compared to lean diet (LD)-fed mice. Using metabolomics, we identified that HFD-fed mice exhibited a distinct and sustained plasma metabolite signature rich in phosphatidylcholines (PC) and lysophosphatidylcholines (lysoPCs), even after resumption of normal chow diet...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811200/globular-adiponectin-reverses-osteo-sarcopenia-and-altered-body-composition-in-ovariectomized-rats
#12
Shyamsundar Pal China, Subhashis Pal, Sourav Chattopadhyay, Konica Porwal, Sapana Kushwaha, Sharmishtha Bhattacharyya, Monika Mittal, Anagha A Gurjar, Tarun Barbhuyan, Abhishek K Singh, Arun K Trivedi, Jiaur R Gayen, Sabyasachi Sanyal, Naibedya Chattopadhyay
Adiponectin regulates various metabolic processes including glucose flux, lipid breakdown and insulin response. We recently reported that adiponectin receptor1 (adipoR1) activation by a small molecule reverses osteopenia in leptin receptor deficient db/db (diabetic) mice. However, the role of adiponectin in bone metabolism under the setting of post-menopausal (estrogen-deficiency) osteopenia and associated metabolic derangements has not been studied. Here, we studied the therapeutic effect of the globular form of adiponectin (gAd), which is predominantly an adipoR1 agonist, in aged ovariectomized (OVX) rats and compared it with standard-of-care anti-osteoporosis drugs...
August 12, 2017: Bone
https://www.readbyqxmd.com/read/28809927/in-middle-aged-and-old-obese-patients-training-intervention-reduces-leptin-level-a-meta-analysis
#13
Ildikó Rostás, László Pótó, Péter Mátrai, Péter Hegyi, Judit Tenk, András Garami, Anita Illés, Margit Solymár, Erika Pétervári, Ákos Szűcs, Andrea Párniczky, Dániel Pécsi, Zoltán Rumbus, Csaba Zsiborás, Nóra Füredi, Márta Balaskó
BACKGROUND: Leptin is one of the major adipokines in obesity that indicates the severity of fat accumulation. It is also an important etiological factor of consequent cardiometabolic and autoimmune disorders. Aging has been demonstrated to aggravate obesity and to induce leptin resistance and hyperleptinemia. Hyperleptinemia, on the other hand, may promote the development of age-related abnormalities. While major weight loss has been demonstrated to ameliorate hyperleptinemia, obese people show a poor tendency to achieve lasting success in this field...
2017: PloS One
https://www.readbyqxmd.com/read/28808139/differential-expression-of-sirtuin-2-and-adipocyte-maturation-restriction-an-adaptation-process-during-hypoxia-in-fish
#14
Ekambaram Padmini, Parasuraman Parimala
Sirtuins have received wide spread attention due to their diverse physiological role in metabolism. Among sirtuins, SIRT2 is more abundant in adipocytes; exerts effect on adipocyte differentiation, a process involves conversion of preadipocytes to mature adipocytes orchestrated by adipokines and adipogenic transcription factors. Grey mullets (Scientific name: Mugil cephalus) were chosen as study organism due to its excellent serve as a biomonitor. Adipocytes isolated from natural field condition were termed as field hypoxic (Ennore) and normoxic (Kovalam) based on DO level in the estuary...
August 14, 2017: Biology Open
https://www.readbyqxmd.com/read/28807666/microrna-132-with-therapeutic-potential-in-chronic-wounds
#15
Xi Li, Dongqing Li, Aoxue Wang, Tongbin Chu, Warangkana Lohcharoenkal, Xiaowei Zheng, Jacob Grünler, Sampath Narayanan, Sofie Eliasson, Eva K Herter, Yang Wang, Yannan Ma, Marcus Ehrström, Liv Eidsmo, Maria Kasper, Andor Pivarcsi, Enikö Sonkoly, Sergiu-Bogdan Catrina, Mona Ståhle, Ning Xu Landén
Chronic wounds represent a major and rising health and economic burden worldwide. There is a continued search towards more effective wound therapy. We found significantly reduced microRNA-132 (miR-132) expression in human diabetic ulcers compared to normal skin wounds, and also in skin wounds of leptin receptor-deficient (db/db) diabetic mice compared to wild-type mice. Local replenishment of miR-132 in the wounds of db/db mice accelerated wound closure effectively, which was accompanied by increased proliferation of wound-edge keratinocytes and reduced inflammation...
August 11, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28807167/treatment-of-insomnia-with-traditional-chinese-herbal-medicine
#16
Amrinder Singh, Kaicun Zhao
Insomnia is a condition with sleep problems and many people suffered from it. Chronic insomnia can last for long time and it will severely affect people's health and the quality of life. In conventional medicine, the most commonly used the medicine is benzodiazepine. It is effective but also has significant side effects. Patients try to use some kinds of alternative medicines. Chinese medicinal herbs and formulas have been used in the treatment of insomnia for more than 2000 years in China. In recent decades, Chinese herbal medicine has been widely used in the Western countries...
2017: International Review of Neurobiology
https://www.readbyqxmd.com/read/28806585/relationship-between-craving-and-plasma-leptin-concentrations-in-patients-with-cocaine-addiction
#17
Giovanni Martinotti, Chiara Montemitro, Gaia Baroni, Sara Andreoli, Flaminia Alimonti, Marco Di Nicola, Federico Tonioni, Lorenzo Leggio, Massimo di Giannantonio, Luigi Janiri
BACKGROUND: There is robust evidence indicating an overlap between neurobiological circuitry and pathways that regulate addictions and those that regulate appetite and food intake. Rodent work suggests a role of the appetitive peptide leptin in cocaine-seeking behaviours. The goal of this study was to investigate the possible relationship between plasma leptin concentrations and cocaine craving and use in patients seeking treatment for cocaine dependence. METHODS: Patients (N=43) with a DSM-IV diagnosis of cocaine dependence were studied before starting detoxification (baseline; T0) and then again 14days after (T1; only those patients who abstained from cocaine during the study)...
August 5, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28806419/effects-of-short-term-dry-immersion-on-bone-remodeling-markers-insulin-and-adipokines
#18
Marie-Thérèse Linossier, Liubov E Amirova, Mireille Thomas, Myriam Normand, Marie-Pierre Bareille, Guillemette Gauquelin-Koch, Arnaud Beck, Marie-Claude Costes-Salon, Christine Bonneau, Claude Gharib, Marc-Antoine Custaud, Laurence Vico
BACKGROUND: Dry immersion (DI), a ground-based model of microgravity previously used in Russia, has been recently implemented in France. The aim of this study was to analyze early events in a short-term DI model in which all conditions are met to investigate who is first challenged from osteo- or adipo-kines and to what extent they are associated to insulin-regulating hormones. METHODS: Twelve healthy men were submitted to a 3-day DI. Fasting blood was collected during pre-immersion phase for the determination of the baseline data collection (BDC), daily during DI (DI24h, DI48H and DI72h), then after recovery (R+3h and R+24h)...
2017: PloS One
https://www.readbyqxmd.com/read/28805484/disparate-phospho-smad2-levels-in-advanced-type-2-diabetes-patients-with-diabetic-nephropathy-and-early-experimental-db-db-mouse-model
#19
Lise Høj Thomsen, Morten Fog-Tonnesen, Lisbeth Nielsen Fink, Jenny Norlin, Amaya García de Vinuesa, Troels Krarup Hansen, Emile de Heer, Peter Ten Dijke, Alexander Rosendahl
Uncontrolled activation of transforming growth factor beta (TGF-β) family members is hypothesized to participate in type 2 diabetes (T2D) dependent diabetic nephropathy (DN). We evaluated and compared downstream activation of the Smad2-signaling pathway in kidney samples from T2D patients to kidneys from the T2D model of leptin receptor deficient db/db mouse. Furthermore, expression of TGF-β family members was evaluated to elucidate molecular mechanisms in the mouse model. Kidney samples from patients with advanced stages of DN showed elevated pSmad2 staining whereas db/db mouse kidneys surprisingly showed a decrease in pSmad2 in the tubular compartment...
November 2017: Renal Failure
https://www.readbyqxmd.com/read/28804632/the-pattern-of-il-24-mda-7-and-its-cognate-receptors-expression-following-activation-of-human-hepatic-stellate-cells
#20
Iman Jamhiri, Seyed Younes Hosseini, Davood Mehrabani, Zahra Khodabandeh, Ramin Yaghobi, Razieh Dowran, Saber Zahri
Activation of hepatic stellate cells (HSCs) is the pivotal event during liver fibrosis. Interleukin (IL)-24/melanoma differentiation-associated gene-7 (mda-7) has attracted attention in the pathophysiology of some diseases, while its role in activation/suppression of human HSCs is still unclear. It is important to elucidate whether the expression levels of the IL-24/mda-7 protein and its receptors in HSC cells are changed following activation. LX-2 cells, a human hepatic stellate cell line were activated by a combination of leptin and serum starvation...
August 2017: Biomedical Reports
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