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Body homeostasis

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https://www.readbyqxmd.com/read/27913872/treatment-for-6%C3%A2-months-with-fish-oil-derived-n-3-polyunsaturated-fatty-acids-has-neutral-effects-on-glycemic-control-but-improves-dyslipidemia-in-type-2-diabetic-patients-with-abdominal-obesity-a-randomized-double-blind-placebo-controlled-trial
#1
Feng Wang, Yanyan Wang, Yan Zhu, Xiaosong Liu, Hui Xia, Xian Yang, Guiju Sun
PURPOSE: This study aimed to determine the effects of fish oil-derived n-3 PUFA on glycemic control and lipid profiles in type 2 diabetic patients with abdominal obesity. METHODS: In a randomized, double-blind, placebo-controlled trial, 100 type 2 diabetic patients with abdominal obesity were randomized into two groups including 4 g/day of fish oil (2.4 g n-3 PUFA) or placebo (corn oil) for 6 months. Serum fatty acid, body composition, as well as markers of glucose regulation and lipid parameters were measured before and after intervention...
December 2, 2016: European Journal of Nutrition
https://www.readbyqxmd.com/read/27911357/characterization-of-metabolic-status-in-nonhuman-primates-with-the-intravenous-glucose-tolerance-test
#2
Michael Staup, George Aoyagi, TeQuana Bayless, Yixin Wang, Keefe Chng
The intravenous glucose tolerance test (IVGTT) plays a key role in the characterization of glucose homeostasis. When taken together with serum biochemical profiles, inclusive of blood glucose levels in both the fed and fasted state, HbA1c, insulin levels, clinical history of diet, body composition, and body weight status, an assessment of normal and abnormal glycemic control can be made. Interpretation of an IVGTT is done through measurement of changes in glucose and insulin levels over time in relation to the dextrose challenge...
November 13, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27910748/factors-influencing-the-amino-acid-and-peptide-transporter-proteins-mrna-expression-in-avian-species
#3
Bahman Navidshad, Seyed Ziaodin Mirhoseini
The commercial strains of broiler chickens have genetically selected to reach market weight at younger ages. In order to sustain increased growth rate requires an efficient assimilation of nutrients from the intestinal lumen, which is permitted through nutrient assimilation through the enterocytes that is facilitated by many nutrient transporter proteins. These trans-membrane proteins have specific action, well known kinetics and assist in the partitioning of nutrients among tissues. Amino acids are transported across the plasma membrane as free amino acids or short chain peptides through several independent systems encoded by various nutrient transporter gene products, and these systems may act on multiple substrates...
2016: Critical Reviews in Eukaryotic Gene Expression
https://www.readbyqxmd.com/read/27909699/aav-mediated-sirt1-overexpression-in-skeletal-muscle-activates-oxidative-capacity-but-does-not-prevent-insulin-resistance
#4
Laia Vilà, Carles Roca, Ivet Elias, Alba Casellas, Ricardo Lage, Sylvie Franckhauser, Fatima Bosch
Type 2 diabetes is characterized by triglyceride accumulation and reduced lipid oxidation capacity in skeletal muscle. SIRT1 is a key protein in the regulation of lipid oxidation and its expression is reduced in the skeletal muscle of insulin resistant mice. In this tissue, Sirt1 up-regulates the expression of genes involved in oxidative metabolism and improves mitochondrial function mainly through PPARGC1 deacetylation. Here we examined whether Sirt1 overexpression mediated by adeno-associated viral vectors of serotype 1 (AAV1) specifically in skeletal muscle can counteract the development of insulin resistance induced by a high fat diet in mice...
2016: Molecular Therapy. Methods & Clinical Development
https://www.readbyqxmd.com/read/27908915/-the-hypothalamic-glucagon-like-peptide-1-glp-1-receptor-glp-1r-is-sufficient-but-not-necessary-for-the-regulation-of-energy-balance-and-glucose-homeostasis-in-mice
#5
Melissa A Burmeister, Jennifer E Ayala, Hannah Smouse, Adriana Landivar-Rocha, Jacob D Brown, Daniel J Drucker, Doris A Stoffers, Darleen A Sandoval, Randy J Seeley, Julio E Ayala
Pharmacological activation of the hypothalamic glucagon-like peptide-1 (GLP-1) receptor (GLP-1R) promotes weight loss and improves glucose tolerance. This demonstrates that the hypothalamic GLP-1R is sufficient but does not show whether it is necessary for the effects of exogenous GLP-1R agonists (GLP-1RA) or endogenous GLP-1 on these parameters. To address this, we crossed mice harboring floxed Glp1r alleles to mice expressing Nkx2.1-Cre to knock down Glp1r expression throughout the hypothalamus (GLP-1RKD(ΔNkx2...
December 1, 2016: Diabetes
https://www.readbyqxmd.com/read/27908750/mesenchymal-stromal-cell-based-therapies-reduce-obesity-and-metabolic-syndromes-induced-by-a-high-fat-diet
#6
Chien-Wei Lee, Wei-Ting Hsiao, Oscar K Lee
Obesity is an alarming global health problem that results in multiaspect metabolic syndromes in both genders and most age groups. The lack of effective therapies for obesity and its associated metabolic syndrome is an urgent societal issue. To elucidate whether mesenchymal stromal cell (MSC)-based therapies can ameliorate high-fat diet-induced obesity and compare the effectiveness of several methodological approaches, we transplanted human MSCs, MSC-derived brown adipocytes (M-BA), and MSC lysateinto obese mice...
November 12, 2016: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/27908485/managing-fluid-and-electrolyte-disorders-in-kidney-disease
#7
REVIEW
Cathy Langston
Because of the role of the kidneys in maintaining homeostasis in the body, kidney disease leads to derangements of fluid, electrolyte, and acid-base balance. The most effective therapy of a uremic crisis is careful management of fluid balance, which involves thoughtful assessment of hydration, a fluid treatment plan personalized for the specific patient, and repeated and frequent reassessment of fluid and electrolyte balance. Disorders of sodium, chloride, potassium, calcium, and phosphorus are commonly encountered in kidney disease and some may be life-threatening...
November 28, 2016: Veterinary Clinics of North America. Small Animal Practice
https://www.readbyqxmd.com/read/27908213/determinants-of-low-bone-mineral-density-in-premenopausal-polycystic-ovary-syndrome-patients
#8
Cihan Karadağ, Tevfik Yoldemir, Dilek Gogas Yavuz
OBJECTIVE: The aim of this study was to evaluate the bone mineral density (BMD) values and to determine the associations between BMD and insulin sensitivity, hyperandrogenemia, body mass index (BMI), and sex hormones in premenopausal polycystic ovary syndrome (PCOS) patients. METHODS: A hundred and three women with PCOS and sixty age- and BMI-matched healthy control women were enrolled to this cross-sectional study. Serum androgen and estradiol (E2) levels were measured...
December 2, 2016: Gynecological Endocrinology
https://www.readbyqxmd.com/read/27906866/inherited-and-acquired-disorders-of-magnesium-homeostasis
#9
Matthias Tilmann Florian Wolf
PURPOSE OF REVIEW: Magnesium (Mg) imbalances are frequently overlooked. Hypermagnesemia usually occurs in preeclamptic women after Mg therapy or in end-stage renal disease patients, whereas hypomagnesemia is more common with a prevalence of up to 15% in the general population. Increasing evidence points toward a role for mild-to-moderate chronic hypomagnesemia in the pathogenesis of hypertension, type 2 diabetes mellitus, and metabolic syndrome. RECENT FINDINGS: The kidneys are the major regulator of total body Mg homeostasis...
November 30, 2016: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/27906092/alterations-to-mtorc1-signaling-in-the-skeletal-muscle-differentially-affect-whole-body-metabolism
#10
Maitea Guridi, Barbara Kupr, Klaas Romanino, Shuo Lin, Denis Falcetta, Lionel Tintignac, Markus A Rüegg
BACKGROUND: The mammalian target of rapamycin complex 1 (mTORC1) is a central node in a network of signaling pathways controlling cell growth and survival. This multiprotein complex integrates external signals and affects different nutrient pathways in various organs. However, it is not clear how alterations of mTORC1 signaling in skeletal muscle affect whole-body metabolism. RESULTS: We characterized the metabolic phenotype of young and old raptor muscle knock-out (RAmKO) and TSC1 muscle knock-out (TSCmKO) mice, where mTORC1 activity in skeletal muscle is inhibited or constitutively activated, respectively...
March 21, 2016: Skeletal Muscle
https://www.readbyqxmd.com/read/27906079/muscle-specific-loss-of-bmal1-leads-to-disrupted-tissue-glucose-metabolism-and-systemic-glucose-homeostasis
#11
Brianna D Harfmann, Elizabeth A Schroder, Maureen T Kachman, Brian A Hodge, Xiping Zhang, Karyn A Esser
BACKGROUND: Diabetes is the seventh leading cause of death in the USA, and disruption of circadian rhythms is gaining recognition as a contributing factor to disease prevalence. This disease is characterized by hyperglycemia and glucose intolerance and symptoms caused by failure to produce and/or respond to insulin. The skeletal muscle is a key insulin-sensitive metabolic tissue, taking up ~80 % of postprandial glucose. To address the role of the skeletal muscle molecular clock to insulin sensitivity and glucose tolerance, we generated an inducible skeletal muscle-specific Bmal1 (-/-) mouse (iMSBmal1 (-/-))...
March 30, 2016: Skeletal Muscle
https://www.readbyqxmd.com/read/27905649/-hyperinsulinemia-and-insulin-resistance-in-children
#12
Ana Beatriz Rosas-Sumano, Francisco Javier Rodal-Canales, Margarita Barrientos Pérez, Beatriz Eugenia Cárdenas-Morales, Laura Pérez-Campos Mayoral, Eduardo Pérez-Campos
BACKGROUND: Obesity during childhood is a risk factor for developing cardiovascular diseases during adulthood. AIM: To measure insulin and glucose levels and parameters of insulin resistance in obese, overweight and normal weight Mexican children. MATERIAL AND METHODS: Comparative study of 21 obese children with a body mass index (BMI) over percentile 95, aged 10 ± 1 years (10 males), 14 children aged 10 ± 2 (7 males) with a BMI between percentiles 85 and 94 and 16 children aged 9 ± 2 years (3 males) with a body mass index between percentiles 10 and 84...
August 2016: Revista Médica de Chile
https://www.readbyqxmd.com/read/27905548/neurexin-regulates-nighttime-sleep-by-modulating-synaptic-transmission
#13
Huawei Tong, Qian Li, Zi Chao Zhang, Yi Li, Junhai Han
Neurexins are cell adhesion molecules involved in synaptic formation and synaptic transmission. Mutations in neurexin genes are linked to autism spectrum disorders (ASDs), which are frequently associated with sleep problems. However, the role of neurexin-mediated synaptic transmission in sleep regulation is unclear. Here, we show that lack of the Drosophila α-neurexin homolog significantly reduces the quantity and quality of nighttime sleep and impairs sleep homeostasis. We report that neurexin expression in Drosophila mushroom body (MB) αβ neurons is essential for nighttime sleep...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27904930/micrornas-in-bone-diseases
#14
REVIEW
L Gennari, S Bianciardi, D Merlotti
MicroRNAs are small, noncoding single-stranded RNAs that have emerged as important posttranscriptional regulators of gene expression, with an essential role in vertebrate development and different biological processes. This review highlights the recent advances in the function of miRNAs and their roles in bone remodeling and bone diseases. MicroRNAs (miRNAs) are a class of small (∼22 nt), noncoding single-stranded RNAs that have emerged as important posttranscriptional regulators of gene expression. They are essential for vertebrate development and play critical roles in different biological processes related to cell differentiation, activity, metabolism, and apoptosis...
November 30, 2016: Osteoporosis International
https://www.readbyqxmd.com/read/27903746/intestinal-glycolysis-visualized-by-fdg-pet-ct-correlates-with-glucose-decrement-after-gastrectomy
#15
Cheol Ryong Ku, Narae Lee, Jae Won Hong, In Gyu Kwon, Woo Jin Hyung, Sung Hoon Noh, Eun Jig Lee, Mijin Yun, Arthur Cho
Gastrectomy method is known to influence glucose homeostasis. (18)F-fluorodeoxyglucose (FDG) PET/CT acquired after gastrectomy often reveals newly developed physiologic small bowel uptake. We correlated newly developed small bowel FDG uptake and glucose homeostasis in post-gastrectomy gastric cancer patients. We retrospectively analyzed 239 non-diabetic patients who underwent staging and follow-up FDG PET/CT before and after gastrectomy for gastric cancer. Post-operative small bowel glycolysis was quantified by recording intestinal total lesion glycolysis (TLG)...
November 30, 2016: Diabetes
https://www.readbyqxmd.com/read/27903520/visceral-adiposity-and-metabolic-syndrome-after-very-high-fat-and-low-fat-isocaloric-diets-a-randomized-controlled-trial
#16
Vivian L Veum, Johnny Laupsa-Borge, Øyvin Eng, Espen Rostrup, Terje H Larsen, Jan Erik Nordrehaug, Ottar K Nygård, Jørn V Sagen, Oddrun A Gudbrandsen, Simon N Dankel, Gunnar Mellgren
BACKGROUND: Different aspects of dietary pattern, including macronutrient and food profiles, may affect visceral fat mass and metabolic syndrome. OBJECTIVE: We hypothesized that consuming energy primarily from carbohydrate or fat in diets with similar food profiles would differentially affect the ability to reverse visceral adiposity and metabolic syndrome. DESIGN: Forty-six men (aged 30-50 y) with body mass index (in kg/m(2)) >29 and waist circumference >98 cm were randomly assigned to a very high-fat, low-carbohydrate (VHFLC; 73% of energy fat and 10% of energy carbohydrate) or low-fat, high-carbohydrate (LFHC; 30% of energy fat and 53% of energy carbohydrate) diet for 12 wk...
November 30, 2016: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/27903434/hypoxia-and-hif-1-activation-in-bacterial-infections
#17
Gayatri Devraj, Christiane Beerlage, Bernhard Brüne, Volkhard A J Kempf
For most of the living being, oxygen is one of the essential elements required to sustain life. Deprivation of oxygen causes tissue hypoxia and this affects host cell and organ functions severely. Tissue hypoxia is a prominent microenvironmental condition occurring in infections and there is a body of evidence that hypoxia and inflammation are interconnected with each other. The primary key factor mediating the mammalian hypoxic response is hypoxia inducible factor (HIF)-1, which regulates oxygen homeostasis on cellular, tissue and organism levels...
November 26, 2016: Microbes and Infection
https://www.readbyqxmd.com/read/27902422/microbiota-dysbiosis-a-new-piece-in-the-understanding-of-carcinogenesis-puzzle
#18
Valeria García-Castillo, Enrique Sanhueza, Eileen McNerney, Sergio A Onate, Apolinaria García
Cancer is defined as an uncontrolled proliferation of malignant cells in a host and it is one of the main causes of death worldwide. Genetic and environmental factors play an important role in its development and the involvement of microbial communities has also recently been recognized. The close relationship that characterizes the colonization of human commensal communities involves health risks particularly when the homeostasis is disturbed. It has been hypothesized that this process may lead to cancer by modulating the inflammatory response of the host, by the production of carcinogenic metabolic products or by the production of toxins which disrupt the cell cycle...
October 21, 2016: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27901601/activation-of-estrogen-response-element-independent-er%C3%AE-signaling-protects-female-mice-from-diet-induced-obesity
#19
Ali Yasrebi, Janelle A Rivera, Elizabeth A Krumm, Jennifer A Yang, Troy A Roepke
17β-estradiol (E2) regulates central and peripheral mechanisms that control energy and glucose homeostasis predominantly through estrogen receptor α (ERα) acting via receptor binding to estrogen response elements (ERE). ERα signaling is also involved in mediating the effects of E2 on diet-induced obesity (DIO), although the roles of ERE-dependent and -independent ERα signaling in ameliorating the effects of DIO remain largely unknown. We hypothesize that ERE-dependent ERα signaling is necessary to ameliorate the effects of DIO...
November 30, 2016: Endocrinology
https://www.readbyqxmd.com/read/27901349/curcumin-improves-the-metabolic-syndrome-in-high-fructose-diet-fed-rats-role-of-tnf-%C3%AE-nf-%C3%AE%C2%BAb-and-oxidative-stress
#20
Mohamed Elsayed Kelany, Tahir M Hakami, Adel H Omar
This study aimed to investigate effects of curcumin on high fructose diet (HFD)-induced metabolic syndrome (MetS) in rats and the possible mechanisms involved. MetS was induced in male albino rats (n = 20), over 8 weeks, by 65% HFD. For 8-week experiment period, rats were assigned to 2 equal groups: curcumin-treated rats received curcumin (200 mg/kg, p.o, once daily) along with HFD, and untreated rats were fed with HFD only. We evaluated body mass (BM), systolic blood pressure (SBP), homeostasis model assessment of insulin resistance (HOMA-IR), and serum levels of glucose, insulin, leptin, total cholesterol (TC), triglycerides (TGs), uric acid, malondialdehyde (MDA; lipid peroxidation product), and tumor necrosis factor-α (TNF-α; inflammatory cytokine), and serum catalase (endogenous antioxidant) activity and immunohistochemical expression of nuclear factor κB (NF-κB; inflammation-related transcription factor) in hepatocytes...
August 17, 2016: Canadian Journal of Physiology and Pharmacology
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