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https://www.readbyqxmd.com/read/29320702/repression-of-adipose-tissue-fibrosis-through-a-prdm16-gtf2ird1-complex-improves-systemic-glucose-homeostasis
#1
Yutaka Hasegawa, Kenji Ikeda, Yong Chen, Diana L Alba, Daniel Stifler, Kosaku Shinoda, Takashi Hosono, Pema Maretich, Yangyu Yang, Yasushi Ishigaki, Jingyi Chi, Paul Cohen, Suneil K Koliwad, Shingo Kajimura
Adipose tissue fibrosis is a hallmark of malfunction that is linked to insulin resistance and type 2 diabetes; however, what regulates this process remains unclear. Here we show that the PRDM16 transcriptional complex, a dominant activator of brown/beige adipocyte development, potently represses adipose tissue fibrosis in an uncoupling protein 1 (UCP1)-independent manner. By purifying the PRDM16 complex, we identified GTF2IRD1, a member of the TFII-I family of DNA-binding proteins, as a cold-inducible transcription factor that mediates the repressive action of the PRDM16 complex on fibrosis...
January 9, 2018: Cell Metabolism
https://www.readbyqxmd.com/read/29235554/morning-and-afternoon-appetite-and-gut-hormone-responses-to-meal-and-stress-challenges-in-obese-individuals-with-and-without-binge-eating-disorder
#2
S Carnell, C Grillot, T Ungredda, S Ellis, N Mehta, J Holst, A Geliebter
BACKGROUND: Eating late in the day is common, and stress can induce eating. Little is understood about how time of day and stress interact to affect appetite and thereby body weight. These may be particularly important influences in binge eaters, who tend to binge in the evening, and in response to stress. METHOD: Obese participants with (n=16) and without (n=16) Binge Eating Disorder (BED) participated in two identical test protocols beginning either in the morning or the afternoon (AM condition/PM condition), each following an 8 h fast...
December 13, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29218733/a-gene-driven-recovery-mechanism-drosophila-larvae-increase-feeding-activity-for-post-stress-weight-recovery
#3
Masasuke Ryuda, Miku Tabuchi, Hitoshi Matsumoto, Takashi Matsumura, Masanori Ochiai, Yoichi Hayakawa
Recovery from weight loss after stress is important for all organisms, although the recovery mechanisms are not fully understood. We are working to clarify these mechanisms. Here, we recorded enhanced feeding activity of Drosophila melanogaster larvae from 2 to 4 h after heat stress at 35°C for 1 h. During the post-stress period, expression levels of sweet taste gustatory receptor genes (Grs), Gr5a, Gr43a, Gr64a, and Gr64f, were elevated, whereas bitter taste Grs, Gr66a, and Gr33a, were decreased in expression and expression of a non-typical taste receptor Gr, Gr68a, was unchanged...
December 8, 2017: Archives of Insect Biochemistry and Physiology
https://www.readbyqxmd.com/read/29183280/using-a-monitoring-and-evaluation-framework-to-improve-study-efficiency-and-quality-during-a-prospective-cohort-study-in-infants-receiving-rotavirus-vaccination-in-el-alto-bolivia-the-infant-nutrition-inflammation-and-diarrheal-illness-nidi-study
#4
Anna M Aceituno, Kaitlyn K Stanhope, Paulina A Rebolledo, Rachel M Burke, Rita Revollo, Volga Iñiguez, Parminder S Suchdev, Juan S Leon
BACKGROUND: Implementing rigorous epidemiologic studies in low-resource settings involves challenges in participant recruitment and follow-up (e.g., mobile populations, distrust), biological sample collection (e.g., cold-chain, laboratory equipment scarcity) and data collection (e.g., literacy, staff training, and infrastructure). This article describes the use of a monitoring and evaluation (M&E) framework to improve study efficiency and quality during participant engagement, and biological sample and data collection in a longitudinal cohort study of Bolivian infants...
November 28, 2017: BMC Public Health
https://www.readbyqxmd.com/read/29175325/fatty-acid-oxidation-alleviates-the-energy-deficiency-caused-by-the-loss-of-mpc1-in-mpc1-mice
#5
Shiying Zou, Tianqi Lang, Boyang Zhang, Kunlun Huang, Lijing Gong, Haosu Luo, Wentao Xu, Xiaoyun He
Pyruvate is a central substrate in energy metabolism, paramount to carbohydrate, fat, and amino acid catabolic and anabolic pathways. Mitochondrial pyruvate carrier 1(MPC1) is one important component of the complex that facilitates mitochondrial pyruvate import. Complete MPC1 deficiency is a serious concern, and has been shown to result in embryonic lethality in mice. The study outlined in this paper generated one mouse line with the MPC1 protein part deficiency by using the CRISPR/Cas9 system. Clinical observations, body weight and organ/tissue weight, gas exchange, cold-stimulation, blood parameters, as well as histopathology analysis were analyzed to evaluate potential physiological abnormalities caused by MPC1 deficiency...
November 21, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29175051/fatty-acid-oxidation-is-required-for-active-and-quiescent-brown-adipose-tissue-maintenance-and-thermogenic-programing
#6
Elsie Gonzalez-Hurtado, Jieun Lee, Joseph Choi, Michael J Wolfgang
OBJECTIVE: To determine the role of fatty acid oxidation on the cellular, molecular, and physiologic response of brown adipose tissue to disparate paradigms of chronic thermogenic stimulation. METHODS: Mice with an adipose-specific loss of Carnitine Palmitoyltransferase 2 (Cpt2A-/-), that lack mitochondrial long chain fatty acid β-oxidation, were subjected to environmental and pharmacologic interventions known to promote thermogenic programming in adipose tissue...
November 11, 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/29160176/impact-of-bedding-volume-on-physiological-and-behavioural-parameters-in-laboratory-mice
#7
Jennifer Freymann, Ping-Ping Tsai, Helge D Stelzer, Reinhard Mischke, Hansjoachim Hackbarth
The standard housing temperature in animal facilities is substantially below the lower critical temperature of mice. This does not only endanger animal welfare, it can also jeopardize scientific research as cold stress has a major impact on mouse physiology. There is some evidence that deep bedding, comparable to nesting material, can help mice to reduce heat loss. Whenever changes are applied to the cage environment, the potential impact on experimental results, including variation, needs to be assessed. An increased variation can result in a conflict between reduction and refinement, when more animals are needed for significance due to the housing design...
December 2017: Laboratory Animals
https://www.readbyqxmd.com/read/29109734/similar-genetic-architecture-with-shared-and-unique-quantitative-trait-loci-for-bacterial-cold-water-disease-resistance-in-two-rainbow-trout-breeding-populations
#8
Roger L Vallejo, Sixin Liu, Guangtu Gao, Breno O Fragomeni, Alvaro G Hernandez, Timothy D Leeds, James E Parsons, Kyle E Martin, Jason P Evenhuis, Timothy J Welch, Gregory D Wiens, Yniv Palti
Bacterial cold water disease (BCWD) causes significant mortality and economic losses in salmonid aquaculture. In previous studies, we identified moderate-large effect quantitative trait loci (QTL) for BCWD resistance in rainbow trout (Oncorhynchus mykiss). However, the recent availability of a 57 K SNP array and a reference genome assembly have enabled us to conduct genome-wide association studies (GWAS) that overcome several experimental limitations from our previous work. In the current study, we conducted GWAS for BCWD resistance in two rainbow trout breeding populations using two genotyping platforms, the 57 K Affymetrix SNP array and restriction-associated DNA (RAD) sequencing...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/29105771/preharvest-treatments-with-salicylates-enhance-nutrient-and-antioxidant-compounds-in-plum-at-harvest-and-after-storage
#9
Alejandra Martínez-Esplá, Pedro J Zapata, Daniel Valero, Domingo Martínez-Romero, Huertas M Díaz-Mula, María Serrano
BACKGROUND: Previous reports have addressed the effectiveness of salicylic acid (SA), acetylsalicylic acid (ASA) and methylsalicylate (MeSA) postharvest treatments on maintaining quality properties along storage in several commodities. However, there is no literature regarding the effect of preharvest treatments with salicylates on plum quality attributes (at harvest or after long term cold storage), which was evaluated on this research. RESULTS: At harvest, weight, firmness, individual organic acids, sugars, phenolics, anthocyanins and total carotenoids were found at higher levels in plums from SA, ASA and MeSA treated trees than in those from controls...
November 6, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29103284/carcass-traits-fatty-acid-composition-gene-expression-oxidative-stability-and-quality-attributes-of-different-muscles-in-dorper-lambs-fed-nigella-sativa-seeds-rosmarinus-officinalis-leaves-and-their-combination
#10
Kifah Jumaah Odhaib, Kazeem Dauda Adeyemi, Awis Qurni Sazili
Objective: This study examined the influence of dietary supplementation of Nigella sativa seeds, Rosmarinus officinalis leaves and their combination on carcass attributes, fatty acid (FA) composition, gene expression, lipid oxidation and physicochemical properties of longissimus dorsi (LD), semitendinosus (ST) and supraspinatus (SS) muscles in Dorper lambs. Methods: Twenty-four Dorper lambs (18.68±0.6 kg, 4-5 months old) were randomly assigned to a concentrate mixture containing either, no supplement (control, T1), 1% Rosmarinus officinalis leaves (T2), 1% Nigella sativa seeds (T3), or 1% Rosmarinus officinalis leaves + 1% Nigella sativa seeds (T4) on a dry matter basis...
November 3, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/29101739/brown-adipose-tissue-an-update-on-recent-findings
#11
REVIEW
Kara L Marlatt, Eric Ravussin
PURPOSE OF REVIEW: New treatment approaches to weight loss and weight loss maintenance in humans are critical. Given its potential role in stimulating energy expenditure, brown adipose tissue (BAT) activation has become a trending topic as an anti-obesity treatment. RECENT FINDINGS: Most studies on BAT stimulation have been conducted in rodents and used cold stimulation. To date, few human trials exist that tested the effect of cold exposure on BAT. Those studies show that BAT contributes a small amount to overall energy metabolism which is unlikely to cause weight loss...
December 2017: Current Obesity Reports
https://www.readbyqxmd.com/read/29052828/long-term-results-of-primary-repair-of-combined-cuts-on-the-median-and-ulnar-nerves-in-the-forearm
#12
Kemal Özaksar, Hüseyin Günay, Levent Küçük, Erhan Coşkunol
BACKGROUND: The objective of this clinical study was to evaluate sensory and motor functions in the later period following primary repair of combined injuries of the ulnar and median nerves in the forearm at proximal, middle, and distal levels. METHODS: Later period sensory evaluation of ulnar and median combined cuts was performed using two-point discrimination and monofilament tests. On the other hand, motor evaluation was performed by determining dorsal palmar interosseus strength for the ulnar nerve and abductor pollicis brevis muscle strength for the median nerve...
September 2017: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/29040448/male-brown-fat-specific-double-knockout-of-igfir-ir-atrophy-mitochondrial-fission-failure-impaired-thermogenesis-and-obesity
#13
Vanesa Viana-Huete, Carlos Guillén, Gema García, Silvia Fernández, Ana García-Aguilar, C R Kahn, Manuel Benito
It is unknown how the lack of IR (insulin receptor)/ IGFIR (insulin like growth factor receptor) in a tissue-specific manner does affect brown fat development and mitochondrial integrity and function and its impact on the redistribution of the adipose organ and the metabolic status. To address this important issue, we have developed the IR/IGFIR double knockout in brown adipose tissue-specific manner (DKO). Lack of those receptors caused a severe brown fat atrophy, an enhanced beige cell clusters in inguinal fat, loss of mitochondrial mass, mitochondrial damage related to cristae disruption, and the loss of proteins involved in autophagosome formation, mitophagy, mitochondrial quality control and dynamics and thermogenesis...
October 10, 2017: Endocrinology
https://www.readbyqxmd.com/read/28977005/renal-cold-storage-followed-by-transplantation-impairs-expression-of-key-mitochondrial-fission-and-fusion-proteins
#14
Nirmala Parajuli, Stephen Shrum, Julia Tobacyk, Alex Harb, John M Arthur, Lee Ann MacMillan-Crow
BACKGROUND: The majority of transplanted kidneys are procured from deceased donors which all require exposure to cold storage (CS) for successful transplantation. Unfortunately, this CS leads to renal and mitochondrial damage but, specific mitochondrial targets affected by CS remain largely unknown. The goal of this study is to determine whether pathways involved with mitochondrial fusion or fission, are disrupted during renal CS. METHODS: Male Lewis rat kidneys were exposed to cold storage (CS) alone or cold storage combined with transplantation (CS/Tx)...
2017: PloS One
https://www.readbyqxmd.com/read/28970842/deciphering-the-role-of-cbf-dreb-transcription-factors-and-dehydrins-in-maintaining-the-quality-of-table-grapes-cv-autumn-royal-treated-with-high-co2-levels-and-stored-at-0%C3%A2-c
#15
Maria Vazquez-Hernandez, Irene Romero, M I Escribano, Carmen Merodio, M T Sanchez-Ballesta
C-repeat/dehydration-responsive element binding factors (CBF/DREB) are transcription factors which play a role in improving plant cold stress resistance and recognize the DRE/CRT element in the promoter of a set of cold regulated genes. Dehydrins (DHNs) are proteins that accumulate in plants in response to cold stress, which present, in some cases, CBF/DREB recognition sequences in their promoters and are activated by members of this transcription factor family. The application of a 3-day gaseous treatment with 20 kPa CO2 at 0°C to table grapes cv...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28955440/effects-of-low-dose-lipopolysaccharide-and-age-on-spatial-learning-in-different-morris-water-maze-protocols
#16
Barbara J Kupferschmid, Barbara Therrien, Pamela J Rowsey
OBJECTIVES: Animals administered lipopolysaccharide exhibit dose-related sickness behaviors (decreased food intake, weight loss, and cognitive changes). While research has demonstrated that spatial learning is impaired following a lipopolysaccharide immune challenge, the results differ depending on the methodology used to evaluate spatial learning. Additionally, few studies have evaluated the effects of low-dose lipopolysaccharide on spatial learning. Therefore, we assessed spatial learning, food intake, and weight changes in adult and aged rats after a low-dose lipopolysaccharide immune challenge in the Morris water maze using two water temperatures...
2017: SAGE Open Medicine
https://www.readbyqxmd.com/read/28912985/isolated-splenic-cold-abscesses-with-perisplenic-extension-treated-successfully-without-splenectomy
#17
Mohan Khadka, Ravi Pradhan
Splenic tuberculosis (TB) in the form of multiple splenic cold abscesses with perisplenic extensions is a rare disease, especially in an immunocompetent host. It demonstrates diagnostic complexity, which makes identification of the disease difficult. We report a case of an immunocompetent adult male who presented with fever, pain in the left lower chest, decreased appetite, and significant weight loss. On physical examination, he had tenderness in the left lower infra-axillary region and Traube's space dullness without palpable spleen...
2017: Case Reports in Gastrointestinal Medicine
https://www.readbyqxmd.com/read/28860997/specific-features-of-the-hypothalamic-leptin-signaling-response-to-cold-exposure-are-reflected-in-peripheral-blood-mononuclear-cells-in-rats-and-ferrets
#18
Bàrbara Reynés, Marlou Klein Hazebroek, Estefanía García-Ruiz, Jaap Keijer, Paula Oliver, Andreu Palou
Objectives: Cold exposure induces hyperphagia to counteract fat loss related to lipid mobilization and thermogenic activation. The aim of this study was investigate on the molecular mechanisms involved in cold-induced compensatory hyperphagia. Methods: We analyzed the effect of cold exposure on gene expression of orexigenic and anorexigenic peptides, and of leptin signaling-related genes in the hypothalamus of rats at different ages (1, 2, 4, and 6 months), as well as in ferrets. We also evaluated the potential of peripheral blood mononuclear cells to reflect hypothalamic molecular responses...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28811495/low-protein-induced-increases-in-fgf21-drive-ucp1-dependent-metabolic-but-not-thermoregulatory-endpoints
#19
Cristal M Hill, Thomas Laeger, Diana C Albarado, David H McDougal, Hans-Rudolf Berthoud, Heike Münzberg, Christopher D Morrison
Dietary protein restriction increases adipose tissue uncoupling protein 1 (UCP1), energy expenditure and food intake, and these effects require the metabolic hormone fibroblast growth factor 21 (FGF21). Here we test whether the induction of energy expenditure during protein restriction requires UCP1, promotes a resistance to cold stress, and is dependent on the concomitant hyperphagia. Wildtype, Ucp1-KO and Fgf21-KO mice were placed on control and low protein (LP) diets to assess changes in energy expenditure, food intake and other metabolic endpoints...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28806763/genome-wide-regulation-of-electro-acupuncture-on-the-neural-stat5-loss-induced-obese-mice
#20
Shu-Ping Fu, Hao Hong, Sheng-Feng Lu, Chen-Jun Hu, Hou-Xi Xu, Qian Li, Mei-Ling Yu, Chen Ou, Jian-Zhong Meng, Tian-Lin Wang, Lothar Hennighausen, Bing-Mei Zhu
Acupuncture is reported to be effective in treating obesity related illnesses, but its mechanism is still unclear. To investigate this mechanism we applied electro-acupuncture (EA) in a mouse model of obesity and used RNA-seq to identify molecular consequences. Deletion of the transcription factor STAT5 from neurons (Stat5NKO) led to obesity. Acupuncture, in turn, reduced body weight and the ratio of epididymal white adipose tissue (Epi-WAT) to body weight, and it also decreased plasma concentrations of glucose, triglyceride, and cholesterol...
2017: PloS One
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