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https://www.readbyqxmd.com/read/28437736/murine-diet-induced-obesity-remodels-cardiac-and-liver-mitochondrial-phospholipid-acyl-chains-with-differential-effects-on-respiratory-enzyme-activity
#1
E Madison Sullivan, Amy Fix, Miranda J Crouch, Genevieve C Sparagna, Tonya N Zeczycki, David A Brown, Saame Raza Shaikh
Cardiac phospholipids, notably cardiolipin, undergo acyl chain remodeling and/or loss of content in aging and cardiovascular diseases, which is postulated to mechanistically impair mitochondrial function. Less is known about how diet-induced obesity influences cardiac phospholipid acyl chain composition and thus mitochondrial responses. Here we first tested if a high fat diet remodeled murine cardiac mitochondrial phospholipid acyl chain composition and consequently disrupted membrane packing, supercomplex formation and respiratory enzyme activity...
April 12, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28435771/brown-adipose-tissue-bioenergetics-a-new-methodological-approach
#2
María Calderon-Dominguez, Martín Alcalá, David Sebastián, Antonio Zorzano, Marta Viana, Dolors Serra, Laura Herrero
The rediscovery of brown adipose tissue (BAT) in humans and its capacity to oxidize fat and dissipate energy as heat has put the spotlight on its potential as a therapeutic target in the treatment of several metabolic conditions including obesity and diabetes. To date the measurement of bioenergetics parameters has required the use of cultured cells or extracted mitochondria with the corresponding loss of information in the tissue context. Herein, we present a method to quantify mitochondrial bioenergetics directly in BAT...
April 2017: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/28434744/a-prospective-cohort-study-of-digital-cushion-and-corium-thickness-part-1-associations-with-body-condition-lesion-incidence-and-proximity-to-calving
#3
R F Newsome, M J Green, N J Bell, N J Bollard, C S Mason, H R Whay, J N Huxley
Claw horn disruption lesions (CHDL) are a major cause of lameness in dairy cattle and are likely a result of excessive forces being applied to the germinal epithelium that produces the claw horn. The digital cushion is a connective tissue structure, containing depots of adipose tissue, that sits beneath the distal phalanx and has been shown to be thicker in fatter cows. Body condition score (BCS) loss is a risk factor for CHDL, and one possible explanation is that fat is mobilized from the digital cushion during negative energy balance, causing the digital cushion to thin and lose force-dissipating capacity, leading to disruption of claw horn growth...
April 20, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28432282/loss-of-function-myostatin-mutation-increases-insulin-sensitivity-and-browning-of-white-fat-in-meishan-pigs
#4
Chunbo Cai, Lili Qian, Shengwang Jiang, Youde Sun, Qingqing Wang, Dezun Ma, Gaojun Xiao, Biao Li, Shanshan Xie, Ting Gao, Yaoxing Chen, Jie Liu, Xiaorong An, Wentao Cui, Kui Li
Myostatin-deficient mice showed a remarkable hypertrophy of skeletal muscle, with a decreased fat mass and enhanced insulin sensitivity. Currently, it is unclear if the inhibition of myostatin could be used as an approach to treat human obesity and insulin resistance. In this study, we investigated if the inhibition of porcine myostatin has any effect on fat deposition and insulin sensitivity using genetically engineered Meishan pigs containing a myostatin loss-of-function mutation (Mstn -/- ). Our results indicated that, when compared with wild-type pigs, the amount of subcutaneous fat and leaf fat of Mstn -/- pigs were significantly decreased mainly due to the browning of subcutaneous adipose tissue...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28431668/glp-1-receptor-agonists-in-nafld
#5
J-M Petit, B Vergès
Non-alcoholic fatty liver disease (NAFLD) is very common in patients with type 2 diabetes (T2D), with approximately two-thirds having a diagnosis of the disease. Currently, the only validated treatment for NAFLD is weight loss. A number of studies of animal models and human trials have evaluated the effects of glucagon-like peptide-1 receptor agonists (GLP-1RAs) on liver fat content and suggest that the treatment could represent a new alternative for NAFLD management. In this review, our focus is on the main studies regarding the effects of GLP-1RAs on NAFLD...
April 2017: Diabetes & Metabolism
https://www.readbyqxmd.com/read/28431295/clove-and-rosemary-essential-oils-and-encapsuled-active-principles-eugenol-thymol-and-vanillin-blend-on-meat-quality-of-feedlot-finished-heifers
#6
Jéssica de Oliveira Monteschio, Kennyson Alves de Souza, Ana Carolina Pelaes Vital, Ana Guerrero, Maribel Velandia Valero, Emília Maria Barbosa Carvalho Kempinski, Vinícius Cunha Barcelos, Karina Favoreto Nascimento, Ivanor Nunes do Prado
Forty Nellore heifers were fed (73days) with different diets: with or without essential oils (clove and/or rosemary essential oil) and/or active principle blend (eugenol, thymol and vanillin). The pH, fat thickness, marbling, muscle area and water losses (thawing and drip) were evaluated 24h post mortem on the Longissimus thoracis, and the effects of aging (14days) was evaluated on the meat cooking losses, color, texture and lipid oxidation. Antioxidant activity was also evaluated. Treatments had no effect (P>0...
April 5, 2017: Meat Science
https://www.readbyqxmd.com/read/28431116/ontogeny-and-thermogenic-role-for-sternal-fat-in-female-sheep
#7
Belinda A Henry, Mark Pope, Mark Birtwistle, Rachael Loughnan, Reham Alagal, John-Paul Fuller-Jackson, Viv Perry, Helen Budge, Iain J Clarke, Michael E Symonds
Brown adipose tissue acting through a unique uncoupling protein (UCP1) has a critical role in preventing hypothermia in new-born sheep but is then considered to rapidly disappear during postnatal life. The extent to which the anatomical location of fat influences postnatal development and thermogenic function, particularly following feeding, in adulthood, are not known and were both examined in our study. Changes in gene expression of functionally important pathways (i.e. thermogenesis, development, adipogenesis and metabolism) were compared between sternal and retroperitoneal fat depots together with a representative skeletal muscle over the first month of postnatal life, coincident with the loss of brown fat and accumulation of white fat...
April 19, 2017: Endocrinology
https://www.readbyqxmd.com/read/28430983/absence-of-endothelial-er%C3%AE-results-in-arterial-remodeling-and-decreased-stiffness-in-western-diet-fed-male-mice
#8
Camila Manrique-Acevedo, Francisco I Ramirez-Perez, Jaume Padilla, Victoria J Vieira-Potter, Annayya R Aroor, Brady J Barron, Dongqing Chen, Dominic Haertling, Cory Declue, James R Sowers, Luis A Martinez-Lemus
The role of estrogen receptor alpha (ERα) signaling in the vasculature of females has been described under different experimental conditions and our group recently reported that lack of endothelial ERα in female mice fed a Western diet (WD) results in amelioration of vascular stiffness. Conversely, the role of ERα in the male vasculature in this setting has not been explored. In conditions of over-nutrition and insulin resistance, augmented arterial stiffness, endothelial dysfunction and arterial remodeling contribute to the development of cardiovascular disease...
April 18, 2017: Endocrinology
https://www.readbyqxmd.com/read/28429577/investigating-general-medication-prescription-by-general-practitioners-during-a-12-month-randomized-controlled-weight-loss-trial
#9
N R Fuller, N S Lau, T P Markovic, I D Caterson
Much healthcare expenditure is on pharmaceutical drugs. Expenditure on medications has increased both in absolute terms, and as a proportion of total health expenditure. No previous studies have investigated the prescribing costs by general practitioners when managing patients during a weight loss intervention. This study evaluated the medication costs by individual class during a 1-year study in which 268 participants were randomized to one of two weight loss programmes, either standard care (SC) as defined by national guidelines, or a commercial provider (Weight Watchers) (CP)...
April 20, 2017: Clinical Obesity
https://www.readbyqxmd.com/read/28428261/ebf2-transcriptionally-regulates-brown-adipogenesis-via-the-histone-reader-dpf3-and-the-baf-chromatin-remodeling-complex
#10
Suzanne N Shapira, Hee-Woong Lim, Sona Rajakumari, Alexander P Sakers, Jeff Ishibashi, Matthew J Harms, Kyoung-Jae Won, Patrick Seale
The transcription factor early B-cell factor 2 (EBF2) is an essential mediator of brown adipocyte commitment and terminal differentiation. However, the mechanisms by which EBF2 regulates chromatin to activate brown fat-specific genes in adipocytes were unknown. ChIP-seq (chromatin immunoprecipitation [ChIP] followed by deep sequencing) analyses in brown adipose tissue showed that EBF2 binds and regulates the activity of lineage-specific enhancers. Mechanistically, EBF2 physically interacts with the chromatin remodeler BRG1 and the BAF chromatin remodeling complex in brown adipocytes...
April 20, 2017: Genes & Development
https://www.readbyqxmd.com/read/28428227/mechanisms-in-endocrinology-the-multiple-facets-of-gh-lessons-from-lifetime-untreated-isolated-gh-deficiency-due-to-ghrh-receptor-mutation
#11
Manuel Aguiar-Oliveira, Anita Ho Souza, Carla R Oliveira, Viviane C Campos, Luiz A Oliveira-Neto, Roberto Salvatori
Twenty years ago, we described a kindred of 105 individuals with isolated GH deficiency (IGHD) in Itabaianinha County, in Brazilian northeast, due to a homozygous mutation in the GH-releasing hormone receptor gene. These subjects exhibit markedly reduced GH responsiveness to stimulatory tests, and anterior pituitary hypoplasia. Serum concentrations of IGF-I, IGF binding protein type 3, and the acid-labile subunit are markedly reduced, with a lesser reduction of IGF-II. The most striking physical findings of these IGHD individuals are the proportionate short stature, doll facies, high-pitched voice, and visceral obesity with reduced fat free mass...
April 20, 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28424263/the-kielin-chordin-like-protein-kcp-attenuates-high-fat-diet-induced-obesity-and-metabolic-syndrome-in-mice
#12
Abdul Soofi, Katherine I Wolf, Margo P Emont, Nathan Qi, Gabriel Martinez-Santibanez, Edward Grimley, Wesam Ostwani, Gregory R Dressler
Obesity and its associated complications, such as insulin resistance and non-alcoholic fatty liver disease, are reaching epidemic proportions. In mice, the TGF-beta superfamily is implicated in the regulation of white and brown adipose tissue differentiation. The Kielin/chordin-like Protein (KCP) is a secreted regulator of the TGF-beta superfamily pathways that can inhibit both TGF-beta and activin signals while enhancing bone morphogenetic protein (BMP) signaling. However, KCP's effects on metabolism and obesity have not been studied in animal models...
April 19, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28422159/spastic-paraplegia-linked-phospholipase-papla1-is-necessary-for-development-reproduction-and-energy-metabolism-in-drosophila
#13
Martina Gáliková, Peter Klepsatel, Judith Münch, Ronald P Kühnlein
The human PAPLA1 phospholipase family is associated with hereditary spastic paraplegia (HSP), a neurodegenerative syndrome characterized by progressive spasticity and weakness of the lower limbs. Taking advantage of a new Drosophila PAPLA1 mutant, we describe here novel functions of this phospholipase family in fly development, reproduction, and energy metabolism. Loss of Drosophila PAPLA1 reduces egg hatchability, pre-adult viability, developmental speed, and impairs reproductive functions of both males and females...
April 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28421208/enhancing-tumor-detection-in-ir-uwb-breast-cancer-system
#14
Sara Fouad, Reda Ghoname, Abd Elmonem Elmahdy, Abd Elhalim Zekry
An ultra-wideband (UWB) microwave system for breast cancer detection is presented. The proposed system includes monocycle pulse generator, antipodal Vivaldi antenna, breast model, and calibration algorithm for tumor detection. Firstly, our pulse generator employs transmission gate in glitch generator to achieve several advantages such as low power consumption and low ringing level. Secondly, the antipodal Vivaldi antenna is designed assuming FR4 dielectric substrate material, and developed antenna element (80 × 80 mm(2)) features a -10 dB return loss and bandwidth ranges from 2...
2017: International Scholarly Research Notices
https://www.readbyqxmd.com/read/28420112/the-association-between-breakfast-skipping-and-body-weight-nutrient-intake-and-metabolic-measures-among-participants-with-metabolic-syndrome
#15
Lijuan Zhang, Lorraine S Cordeiro, Jinghua Liu, Yunsheng Ma
The effect of skipping breakfast on health, especially in adults, remains a controversial topic. A secondary data analysis was conducted to examine associations between breakfast eating patterns and weight loss, nutrient intake, and metabolic parameters among participants with metabolic syndrome (MetS) (n = 240). Three randomly selected 24-h dietary recalls were collected from each participant at baseline and at the one-year visit. Skipped breakfast was seen in 32.9% at baseline and in 17.4% at the one-year visit, respectively...
April 14, 2017: Nutrients
https://www.readbyqxmd.com/read/28419237/the-fat-score-a-fibrosis-score-of-adipose-tissue-predicting-weight-loss-outcome-after-gastric-bypass
#16
Pierre Bel Lassen, Frederic Charlotte, Yuejun Liu, Pierre Bedossa, Gilles le Naour, Joan Tordjman, Christine Poitou, Jean-Luc Bouillot, Laurent Genser, Jean-Daniel Zucker, Nataliya Sokolovska, Judith Aron-Wisnewsky, Karine Clément
Context: Bariatric surgery (BS) induces major and sustainable weight loss in many but not all patients. Factors predicting poor responders (PR) need to be identified to improve patient care. Quantification of subcutaneous adipose tissue (scAT) fibrosis is negatively associated with post-BS weight loss, but whether it could constitute a predictor applicable in clinical routine remains to be demonstrated. Objective: To create a semi-quantitative score evaluating scAT fibrosis and test its predictive value on weight loss response after Roux-en-Y gastric bypass (RYGB)...
April 17, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28419122/lauric-acid-as-feed-additive-an-approach-to-reducing-campylobacter-spp-in-broiler-meat
#17
Katrin Zeiger, Johanna Popp, André Becker, Julia Hankel, Christian Visscher, Guenter Klein, Diana Meemken
The increasing prevalence of Campylobacter spp. within broiler populations is a major problem for food safety and consumer protection worldwide. In vitro studies could already demonstrate that Campylobacter spp. are susceptible to lauric acid. The purpose of this study was to examine in vivo the influence of lauric acid as a feed additive on slaughter parameters, muscle fatty acid profile, meat quality traits and the reduction of Campylobacter coli in inoculated meat of Ross 308 (R308) and Hubbard JA 757 (HJA) broilers in three independent trials (n = 3)...
2017: PloS One
https://www.readbyqxmd.com/read/28415067/effect-of-whey-protein-in-conjunction-with-a-caloric-restricted-diet-and-resistance-training
#18
Wesley D Dudgeon, Elizabeth P Kelley, Timothy P Scheett
Dudgeon, WD, Kelley, EP, and Scheett, TP. Effect of whey protein in conjunction with a caloric-restricted diet and resistance training. J Strength Cond Res 31(5): 1353-1361, 2017-Caloric-restricted weight loss, especially rapid weight loss, results from a decrease in both lean and fat mass (FM). The goal for many is to lose FM while retaining lean body mass (LBM) and muscular performance thus many turn to supplements. Sixteen resistance-trained men (24 ± 1.6 years of age) completed a 4 d·wk body building style split resistance training program for 8 weeks in conjunction with a pre-exercise, periexercise, and postexercise ingestion of whey protein (WHEY) nutritional supplement or carbohydrate (CON)-based nutritional supplement...
May 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28413775/an-interesting-case-of-mycoplasma-pneumonia-associated-multisystem-involvement-and-diffuse-alveolar-hemorrhage
#19
Rashmi Mishra, Edison Cano, Sindhaghatta Venkatram, Gilda Diaz-Fuentes
Severe mycoplasma pneumonia is a rare entity with only 0.5-2% of cases having a fulminant course. We present a 74-year-old woman with hypertension, diabetes mellitus and remote history of marginal zone B-cell lymphoma admitted with abdominal pain and diarrhea of 1-2 days associated with body-aches, dyspnea, dry cough and weight loss for 2-3 weeks. On physical exam, she was febrile, tachypneic, tachycardic and hypoxic on room air. Chest examination revealed diffuse crackles and end-expiratory wheezes. Laboratory tests showed anemia, acute-on-chronic kidney injury and hyaline casts and epithelial cells in the urine analysis...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28413578/epicardial-fat-in-the-maintenance-of-cardiovascular-health
#20
Yang Wu, Aijun Zhang, Dale J Hamilton, Tuo Deng
Epicardial fat is a unique adipose tissue located between the myocardium and the visceral layer of pericardium. This tissue is characterized by highly active fatty acid metabolism and highly expressed thermogenic genes. Epicardial fat and the underlying myocardium share the same microcirculation, suggesting a close and strong interaction between these two structures. Under physiological conditions, epicardial fat protects and supports the heart to exert its normal function. Many clinical studies have shown significant associations between increased amounts of epicardial fat and coronary artery disease (CAD)...
January 2017: Methodist DeBakey Cardiovascular Journal
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