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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/28814950/morinda-citrifolia-l-leaf-extract-prevent-weight-gain-in-sprague-dawley-rats-fed-a-high-fat-diet
#2
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/28806585/relationship-between-craving-and-plasma-leptin-concentrations-in-patients-with-cocaine-addiction
#3
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/28804449/loss-of-leptin-induced-modulation-of-hippocampal-synaptic-trasmission-and-signal-transduction-in-high-fat-diet-fed-mice
#4
Marco Mainardi, Matteo Spinelli, Federico Scala, Andrea Mattera, Salvatore Fusco, Marcello D'Ascenzo, Claudio Grassi
Hippocampal plasticity is triggered by a variety of stimuli including sensory inputs, neurotrophins and inflammation. Leptin, whose primary function is to regulate food intake and energy expenditure, has been recently shown to affect hippocampal neurogenesis and plasticity. Interestingly, mice fed a high-fat diet (HFD) exhibit impaired hippocampal function, but the underlying mechanisms are poorly understood. To address this issue, we compared leptin responsiveness of hippocampal neurons in control and HFD-fed mice by combining single-cell electrophysiology and biochemical assays...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28803009/involvement-of-plasma-adipokines-in-metabolic-and-reproductive-parameters-in-holstein-dairy-cows-fed-with-diets-with-differing-energy-levels
#5
N Mellouk, C Rame, J L Touzé, E Briant, L Ma, D Guillaume, D Lomet, A Caraty, T Ntallaris, P Humblot, J Dupont
This study aimed to investigate the association between plasma adipokine concentrations and metabolic and reproductive parameters in Holstein dairy cows fed diets with different energy levels during the peripartum period. The experiment started 1 mo before first calving and was maintained for 2 lactations. Dry matter intake and energy balance in animals fed a low-energy (LE) diet were significantly lower than that of animals fed a high-energy (HE) diet in the first lactation. Body weight, milk production, back fat thickness, and plasma concentrations of fatty acids, glucose, and insulin were not affected by diet, whereas plasma leptin and adiponectin concentrations were lower and plasma resistin concentrations higher in animals fed the LE diet...
August 9, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28798799/central-administration-of-1-deoxynojirimycin-attenuates-hypothalamic-endoplasmic-reticulum-stress-and-regulates-food-intake-and-body-weight-in-mice-with-high-fat-diet-induced-obesity
#6
Jongwan Kim, Eun-Young Yun, Fu-Shi Quan, Seung-Won Park, Tae-Won Goo
The α-glucosidase inhibitor, 1-deoxynojirimycin (DNJ), is widely used for its antiobesity and antidiabetic effects. Researchers have demonstrated that DNJ regulates body weight by increasing adiponectin levels, which affects energy intake and prevents diet-induced obesity. However, the mechanism by which centrally administered DNJ exerts anorexigenic effects has not been studied until now. We investigated the effect of DNJ in the hypothalamus of mice with high-fat diet-induced obesity. Results showed that intracerebroventricular (ICV) administration of DNJ reduced hypothalamic ER stress, which activated the leptin-induced Janus-activated kinase 2 (JAK2)/signal transducers and activators of transcription 3 (STAT3) signaling pathway to cause appetite suppression...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28770669/case-study-unfavorable-but-transient-physiological-changes-during-contest-preparation-in-a-drug-free-male-bodybuilder
#7
Andrew Pardue, Eric T Trexler, Lisa K Sprod
Extreme body composition demands of competitive bodybuilding have been associated with unfavorable physiological changes, including alterations in metabolic rate and endocrine profile. The current case study evaluated the effects of contest preparation (8 months), followed by recovery (5 months), on a competitive drug-free male bodybuilder over 13 months (M1-M13). Serum testosterone, triiodothyronine (T3), thyroxine (T4), cortisol, leptin, and ghrelin were measured throughout the study. Body composition (BodPod, dual-energy x-ray absorptiometry [DXA]), anaerobic power (Wingate test), and resting metabolic rate (RMR) were assessed monthly...
August 3, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28762102/weight-loss-and-appetite-control-in-women
#8
REVIEW
Luzia Jaeger Hintze, Salma Mahmoodianfard, Coralie Bonaparte Auguste, Éric Doucet
PURPOSE OF REVIEW: The aim of this review is to describe and discuss weight loss-induced variations in appetite in women and factors responsible for these changes. RECENT FINDINGS: Studies have shown postweight loss increases in fasting and postprandial appetite in individuals engaged in weight loss trials, especially in women. Similarly, appetite-related peptides associated to the homeostatic control of feeding, such as leptin, ghrelin and peptide YY, were also found to be altered in way that promotes increased appetite after weight loss interventions...
July 31, 2017: Current Obesity Reports
https://www.readbyqxmd.com/read/28757576/the-association-between-cardiorespiratory-fitness-and-gut-microbiota-composition-in-premenopausal-women
#9
Yifan Yang, Yi Shi, Petri Wiklund, Xiao Tan, Na Wu, Xiaobo Zhang, Olli Tikkanen, Chenhong Zhang, Eveliina Munukka, Sulin Cheng
The aim of this study was to investigate the association between cardiorespiratory fitness and gut microbiota composition in premenopausal women. The participants consisted of 71 premenopausal Finnish women (aged 19-49 years). Gut microbiota were analyzed using flow cytometry, 16S rRNA gene hybridization and DNA-staining. Maximum oxygen uptake (VO2max) was assessed by respiratory gas analyzer and body composition by Bioimpdance. We found that participants with low VO2max had lower Bacteroides, but higher Eubacterium rectale-Clostridium coccoides than the high VO2max group (p < 0...
July 25, 2017: Nutrients
https://www.readbyqxmd.com/read/28754628/differential-vulnerability-to-adverse-nutritional-conditions-in-male-and-female-rats-modulatory-role-of-estradiol-during-development
#10
REVIEW
Helena Pinos, Beatriz Carrillo, Francisca Díaz, Julie A Chowen, Paloma Collado
Many studies have shown the importance of an adequate nutritional environment during development to optimally establish the neurohormonal circuits that regulate feeding behavior. Under- or over-nutrition during early stages of life can lead to alterations in the physiology and brain networks that control food intake, resulting in a greater vulnerability to suffer maladjustments in energy metabolism in adulthood. These alterations produced by under- or over-nourishment during development differ between males and females, as does the modulatory action that estradiol exerts on the alterations produced by malnutrition...
July 25, 2017: Frontiers in Neuroendocrinology
https://www.readbyqxmd.com/read/28751205/central-injection-of-a-synthetic-chicken-partial-leptin-peptide-does-not-affect-food-intake-in-chicks
#11
Wil Sims, Jiaqing Yi, Mark A Cline, Elizabeth R Gilbert
Leptin is an adipose tissue-derived hormone in mammals that plays an important role in whole body energy balance via its inhibitory effects on food intake mediated through the hypothalamus. Chicken leptin has a low sequence homology to mammalian leptin and its role in appetite regulation is not reported; hence the objective of this study was to determine effects of central injection of chicken leptin on food and water intake and associated behaviors in chicks. Chicks were intracerebroventricularly injected with 0 (vehicle), 0...
July 24, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28747887/nutrient-sensing-another-chemosensitivity-of-the-olfactory-system
#12
REVIEW
A-Karyn Julliard, Dolly Al Koborssy, Debra A Fadool, Brigitte Palouzier-Paulignan
Olfaction is a major sensory modality involved in real time perception of the chemical composition of the external environment. Olfaction favors anticipation and rapid adaptation of behavioral responses necessary for animal survival. Furthermore, recent studies have demonstrated that there is a direct action of metabolic peptides on the olfactory network. Orexigenic peptides such as ghrelin and orexin increase olfactory sensitivity, which in turn, is decreased by anorexigenic hormones such as insulin and leptin...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28744834/extra-adrenal-glucocorticoids-contribute-to-the-postprandial-increase-of-circulating-leptin-in-mice
#13
Yuka Tomabechi, Takeshi Tsuruta, Shinichi Saito, Martin Wabitsch, Kei Sonoyama
Leptin, an adipokine secreted by white adipocytes, is known for its function in regulating food intake and energy expenditure, but the mechanisms regulating its circulating levels is not fully understood. Our previous findings suggest that as yet unidentified humoral factors released from enterocytes are involved. The present study tested glucocorticoids (GCs) as candidate factors. Supplementation of corticosterone and cortisol promoted leptin production in murine adipocytes from the 3T3-L1 cell strain and human adipocytes from the Simpson Golabi-Behmel syndrome (SGBS) cell strain, respectively...
July 25, 2017: Journal of Cell Communication and Signaling
https://www.readbyqxmd.com/read/28743192/searching-for-evidence-of-an-anti-inflammatory-diet-in-children-a-systematic-review-of-randomized-controlled-trials-for-pediatric-obesity-interventions-with-a-focus-on-leptin-ghrelin-and-adiponectin
#14
Kimberly A Lewis, Sharon A Brown
PROBLEM: To address the complex phenomenon of pediatric obesity, one must understand the physiological mechanisms regulating energy intake and inflammation. The peptide hormones leptin, ghrelin, and adiponectin are involved in both, but their functions are dysregulated in obesity. The purpose of this systematic review is (1) to characterize studies of nutrition interventions for weight management in children who measure these peptides as outcomes, (2) to assess risk of bias in the studies, and (3) to determine the relationships between these peptides and body mass index (BMI)...
January 1, 2017: Biological Research for Nursing
https://www.readbyqxmd.com/read/28727093/effects-of-intravenous-lipopolysaccharide-administration-on-feed-intake-ruminal-forage-degradability-and-liquid-parameters-and-physiological-responses-in-beef-cattle
#15
K D Lippolis, R F Cooke, K M Schubach, R S Marques, D W Bohnert
This experiment compared DMI, ruminal forage degradability, and liquid parameters as well as physiological responses in beef cattle receiving a lipopolysaccharide (LPS) challenge or not. Eight ruminally cannulated Angus × Hereford steers (485 ± 16 kg BW) were housed in individual pens on d -7, ranked by BW, and allocated to 1 of 2 treatments administered on d 0: 1) an intravenous (i.v.) bolus dose (0.5 μg/kg of BW, diluted in 5 mL of 0.9% sterile saline) of bacterial LPS ( 0111:B4) or 2) a 5-mL i.v. injection of 0...
July 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727047/a-diet-supplemented-with-n-3-polyunsaturated-fatty-acids-influences-the-metabomscic-and-endocrine-response-of-rabbit-does-and-their-offspring
#16
M Rodríguez, R M García-García, M Arias-Álvarez, N Formoso-Rafferty, P Millán, J López-Tello, P L Lorenzo, A González-Bulnes, P G Rebollar
The aim of the present study was to evaluate the productive, endocrine, and metabomscic responses as well as oxidative stress of rabbit does and their offspring when fed a diet supplemented with -3 PUFA during their first productive cycle. To this aim, a total of 105 rabbit does were fed ad mscibitum from d 60 to 172 of age 2 isoenergetic and isoproteic diets differing in fatty acid composition. The control diet ( = 52 does) contained 45.9 g/kg of -3 of the total fatty acids and the enriched diet ( = 53 does) contained 149...
June 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28724055/bone-turnover-after-bariatric-surgery
#17
Thalita Lima Melo, Leila Froeder, Leandro da Cunha Baia, Ita Pfeferman Heilberg
Objective: The aim of the present study was to evaluate parameters of bone and mineral metabolism after bariatric surgery. Subjects and methods: This sectional study included data from medical records from 61 bariatric surgery (BS) patients (minimum period of 6 months after the procedure) and from 30 class II and III obese patients as a control group (Cont), consisting of daily dietary intake of macronutrients, calcium and sodium, serum 25(OH)D and parathyroid hormone (PTH) and other biochemical serum and urinary parameters...
July 13, 2017: Archives of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28723611/parent-reported-nutritional-risk-and-laboratory-indices-of-cardiometabolic-risk-and-in-preschool-aged-children
#18
Navindra Persaud, Hedyeh Ziai, Gerald Lebovic, Jonathon L Maguire, Marina Khovratovich, Janis A Randall Simpson, Khosrow Adeli, Jill Hamilton, Brian W McCrindle, Patricia C Parkin, Catherine S Birken
BACKGROUND: Eating habits formed during childhood may contribute to the increasing prevalence of cardiometabolic disorders. Assessing nutritional risk in young children may help to prevent later cardiometabolic disease. The objective of this study was to determine whether parent-reported nutritional risk in preschool-aged children was associated with laboratory indices of cardiometabolic risk, namely leptin and insulin. METHODS: In this cross-sectional study, the relationship between nutritional risk as determined by the parent-completed NutriSTEP® questionnaire was assessed and compared to the serum leptin and insulin concentrations, hormones involved in regulation of food intake and biomarkers of adiposity and cardiometabolic risk...
August 28, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/28719892/cinnamaldehyde-ameliorates-diet-induced-obesity-in-mice-by-inducing-browning-of-white-adipose-tissue
#19
Jiacheng Zuo, Dandan Zhao, Na Yu, Xin Fang, Qianqian Mu, Yue Ma, Fangfang Mo, Rui Wu, Rufeng Ma, Lili Wang, Ruyuan Zhu, Haixia Liu, Dongwei Zhang, Sihua Gao
BACKGROUND/AIMS: Obesity has become a major health concern with few effective medications. Cinnamaldehyde (CA) has been reported to exhibit anti-diabetic and anti-inflammatory properties. However, whether CA shows anti-obesity activity remains unknown. Therefore, the present study aimed to investigate the potential anti-obesity effects of CA on mice fed a high-fat diet (HFD) and to explore the possible mechanisms involved. METHODS: Male C57BL/6J mice fed an HFD for 12 weeks were supplemented with CA (40 mg/kg/day) via gavage for an additional 8 weeks...
July 18, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28715671/adipose-triglyceride-lipase-protein-abundance-and-translocation-to-the-lipid-droplet-increase-during-leptin-induced-lipolysis-in-bovine-adipocytes
#20
D A Koltes, M E Spurlock, D M Spurlock
Proper regulation of lipid metabolism is critical for preventing the development of metabolic diseases. It is clear that leptin plays a critical role in the regulation of energy homeostasis by regulating energy intake. However, leptin can also regulate energy homeostasis by inducing lipolysis in adipocytes, but it is unclear how the major lipases are involved in leptin-stimulated lipolysis. Therefore, the objectives of this study were to determine if (1) leptin acts directly to induce lipolysis in bovine adipocytes, (2) the potential lipases involved in leptin-induced lipolysis in bovine adipocytes, and (3) increases translocation of adipose triglyceride lipase (ATGL) and hormone sensitive lipase (HSL) during leptin-stimulated lipolysis in bovine stromal vascular cell-derived adipocytes...
June 8, 2017: Domestic Animal Endocrinology
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