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https://www.readbyqxmd.com/read/28806139/mask-mitigates-mapt-and-fus-induced-degeneration-by-enhancing-autophagy-through-lysosomal-acidification
#1
Mingwei Zhu, Sheng Zhang, Xiaolin Tian, Chunlai Wu
Accumulation of intracellular misfolded or damaged proteins is associated with both normal aging and late-onset degenerative diseases. Two cellular clearance mechanisms, the ubiquitin-proteasome system (UPS) and the macroautophagy/autophagy-lysosomal pathway, work in concert to degrade harmful protein aggregates and maintain protein homeostasis. Here we show that Mask, an Ankyrin-repeat and KH-domain containing protein, plays a key role in promoting autophagy flux and mitigating degeneration caused by protein aggregation or impaired UPS function...
August 14, 2017: Autophagy
https://www.readbyqxmd.com/read/28805903/chronic-activation-of-amp-activated-protein-kinase-increases-monocarboxylate-transporter-2-and-4-expression-in-skeletal-muscle
#2
E M England, H Shi, S K Matarneh, E M Oliver, E T Helm, T L Scheffler, E Puolanne, D E Gerrard
Acute activation of AMP-activated protein kinase (AMPK) increases monocarboxylate transporter (MCT) expression in skeletal muscle. However, the impact of chronic activation of AMPK on MCT expression in skeletal muscle is unknown. To investigate, MCT1, MCT2, and MCT4 mRNA expression and protein abundance were measured in the longissimus lumborum (glycolytic), masseter (oxidative), and heart from wild-type (control) and AMPK γ3 pigs. The AMPK γ3 gain in function mutation results in AMPK being constitutively active in glycolytic skeletal muscle and increases energy producing pathways...
August 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28803369/volume-balance-and-intradialytic-ultrafiltration-rate-in-the-hemodialysis-patient
#3
REVIEW
Jason A Chou, Kamyar Kalantar-Zadeh
PURPOSE OF REVIEW: Volume management in hemodialysis patients is often challenging. Assessing volume status and deciding how much fluid to remove during hemodialysis, the so-called ultrafiltration rate (UFR), has remained a conundrum. RECENT FINDINGS: To date there is no objective assessment tool to determine the needed UFR during each hemodialysis session. Higher volume overload or higher UFR is associated with poor outcomes including worse mortality and unfavorable clinical outcomes...
August 12, 2017: Current Heart Failure Reports
https://www.readbyqxmd.com/read/28801239/salsalate-activates-skeletal-muscle-thermogenesis-and-protects-mice-from-high-fat-diet-induced-metabolic-dysfunction
#4
Li Nie, Xin-Lu Yuan, Ke-Tao Jiang, Yu-Hui Jiang, Jin Yuan, Lan Luo, Shi-Wei Cui, Cheng Sun
Salsalate plays beneficial roles for ameliorating hyperglycemia and dyslipidemia in type 2 diabetes patients, but the underlying mechanisms are still poorly understood. In this study, by administering salsalate to mice fed with high fat diet and examining how salsalate rectifies metabolic dysfunction in these obese mice, we found that salsalate stimulated body temperature and attenuated body weight gain without affecting food intake. Our results showed that salsalate application decreased lipid accumulation in liver and epididymal white adipose tissue (eWAT), inhibited hepatic gluconeogenesis and improved insulin signaling transduction in eWAT...
August 4, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28800680/pharmacological-inhibition-of-fsgs-related-trpc6-gain-of-function-mutants-by-semisynthetic-larixol-derived-compounds
#5
Nicole Urban, Sonja Neuser, Anika Hentschel, Sebastian Köhling, Jörg Rademann, Michael Schaefer
BACKGROUND AND PURPOSE: Gain of function mutations in TRPC6 can cause autosomal dominant forms of focal segmental glomerulosclerosis (FSGS). Validated inhibitors of TRPC6 that are biologically active on FSGS-related TRPC6 mutants are eagerly sought. EXPERIMENTAL APPROACH: We synthesized new TRPC6-inhibiting modulators from larixol, a resiniferous constituent of Larix decidua, and tested the potency and selectivity in cell lines stably expressing various TRP channel isoforms...
August 11, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28799160/intramuscular-perfusion-response-in-delayed-onset-muscle-soreness-doms-a-quantitative-analysis-with-contrast-enhanced-ultrasound-ceus
#6
Marion Kellermann, Rafael Heiss, Bernd Swoboda, Kolja Gelse, Jürgen Freiwald, Casper Grim, Armin Nagel, Michael Uder, Dane Wildner, Thilo Hotfiel
The purpose of this study was to analyse intramuscular perfusion response in ultrastructural muscle lesions, by applying contrast-enhanced ultrasound (CEUS) to a delayed onset muscle soreness (DOMS) model. Results of this analysis were compared to high-resolution 3 Tesla MRI T2-weighted sequences. 14 healthy participants were recruited. Average perfusion parameters, represented as Peak enhancement (contrast agent inflow) and wash-in area under curve (WiAUC) of the gastrocnemius (GM) and soleus muscle (SM) were assessed before (baseline) and 60 h after inducing DOMS by eccentric exercise...
August 10, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28798916/risk-benefit-assessment-of-monomethylmercury-and-omega-3-fatty-acid-intake-for-ringed-seal-consumption-with-particular-emphasis-on-vulnerable-populations-in-the-western-canadian-arctic
#7
Lena Gmelch, Holger Hintelmann, Brendan Hickie, Hermine Kienberger, Gary Stern, Michael Rychlik
Many northern Inuit communities rely on traditional food as major source of nourishment. An essential part of the traditional Arctic diet is marine mammals such as ringed seals or beluga. Being top predators, these animals are often highly contaminated with various toxins. In contrast, some tissues of marine mammals are also characterized by high amounts of n3-PUFAs (omega-3 polyunsaturated fatty acids). Here, we try to balance the risks associated with the consumption of different tissue types of ringed seals in terms of the neurotoxin monomethylmercury (MMHg) with the benefits of consumption due to high n3-PUFA concentrations...
2017: Frontiers in Nutrition
https://www.readbyqxmd.com/read/28798857/the-role-of-shear-stress-and-altered-tissue-properties-on-endothelial-to-mesenchymal-transformation-and-tumor-endothelial-cell-interaction
#8
Sara G Mina, Peter Huang, Bruce T Murray, Gretchen J Mahler
Tumor development is influenced by stromal cells in aspects including invasion, growth, angiogenesis, and metastasis. Activated fibroblasts are one group of stromal cells involved in cancer metastasis, and one source of activated fibroblasts is endothelial to mesenchymal transformation (EndMT). EndMT begins when the endothelial cells delaminate from the cell monolayer, lose cell-cell contacts, lose endothelial markers such as vascular endothelial-cadherin (VE-cadherin), gain mesenchymal markers like alpha-smooth muscle actin (α-SMA), and acquire mesenchymal cell-like properties...
July 2017: Biomicrofluidics
https://www.readbyqxmd.com/read/28796827/impact-of-ghrelin-on-body-composition-and-muscle-function-in-a-long-term-rodent-model-of-critical-illness
#9
Neil E Hill, Kevin G Murphy, Saima Saeed, Rahul Phadke, Darren Chambers, Duncan R Wilson, Stephen J Brett, Mervyn Singer
BACKGROUND: Patients with multiple injuries or sepsis requiring intensive care treatment invariably develop a catabolic state with resultant loss of lean body mass, for which there are currently no effective treatments. Recovery can take months and mortality is high. We hypothesise that treatment with the orexigenic and anti-inflammatory gastric hormone, ghrelin may attenuate the loss of body mass following critical illness and improve recovery. METHODS: Male Wistar rats received an intraperitoneal injection of the fungal cell wall derivative zymosan to induce a prolonged peritonitis and consequent critical illness...
2017: PloS One
https://www.readbyqxmd.com/read/28795443/effect-of-conjugated-linoleic-acids-and-omega-3-fatty-acids-with-or-without-resistance-training-on-muscle-mass-in-high-fat-diet-fed-middle-aged-mice
#10
Sang-Rok Lee, Andy V Khamoui, Edward Jo, Michael C Zourdos, Lynn B Panton, Michael J Ormsbee, Jeong-Su Kim
This study investigated the effects of 20 weeks of combined conjugated linoleic acid/omega-3 fatty acid (n-3) administration independently or combined with resistance exercise training (RET) muscle in middle-aged mice consuming a high-fat diet (HFD). Nine-month-old C57BL/6 mice were randomly assigned into four experimental groups (H: high-fat diet, HE: H + RET, HCN: H + CLA/n-3, and HECN: H + CLA/n3 + RET). Body composition and functional capacity were assessed at pre- and post-intervention. Muscle tissues were collected at 14 months of age...
August 10, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28791506/paeoniflorin-ameliorates-atherosclerosis-by-suppressing-tlr4-mediated-nf-%C3%AE%C2%BAb-activation
#11
Huan Li, Yabin Jiao, Mingjun Xie
Paeoniflorin, a type of bioactive monoterpene glucoside in Paeoniae Radix, possesses anti-oxidative, anti-inflammatory and anti-hyperglycaemic properties. However, the underlying mechanism of paeoniflorin in treating atherosclerosis is unclear. A rat model of high-fat diet-induced atherosclerosis and palmitic acid (PA)-treated vascular smooth muscle cells (VSMCs) were used in this study. The serum concentrations of total cholesterol (TC), triglyceride (TG), low-density lipoprotein-cholesterol (LDL-C) and high-density lipoprotein-cholesterol (HDL-C) were determined, and the results indicated that paeoniflorin remarkably lowered the levels of TC, TG and LDL-C induced by a high-fat diet...
August 8, 2017: Inflammation
https://www.readbyqxmd.com/read/28791396/oxidored-nitro-domain-containing-protein-1-promotes-liver-fibrosis-by-activating-the-wnt-%C3%AE-catenin-signaling-pathway-in%C3%A2-vitro
#12
Tianxin Xiang, Shouhua Zhang, Na Cheng, Shanfei Ge, Jiangxiong Wen, Juhua Xiao, Xiaoping Wu
Hepatic fibrosis is a characteristic of various types of chronic liver diseases, and may further develop into liver cirrhosis and liver cancer. Oxidored‑nitro domain‑containing protein 1 (NOR1) expression levels are greater in hepatitis, cirrhosis and hepatocellular carcinoma samples compared with from normal liver samples. However, the importance of NOR1 in liver fibrosis remains to be elucidated. The present study aimed to investigate the effect of NOR1 on the proliferation and matrix expression of human hepatic stellate cells (HSCs) in vitro...
August 4, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28781773/the-relationship-between-dietary-methionine-and-growth-digestion-absorption-and-antioxidant-status-in-intestinal-and-hepatopancreatic-tissues-of-sub-adult-grass-carp-ctenopharyngodon-idella
#13
Pei Wu, Ling Tang, Weidan Jiang, Kai Hu, Yang Liu, Jun Jiang, Shengyao Kuang, Ling Tang, Wuneng Tang, Yongan Zhang, Xiaoqiu Zhou, Lin Feng
BACKGROUND: Methionine is an essential amino acid for fish. The present study was conducted to investigate the effects of dietary methionine on growth performance, digestive and absorptive ability, as well as antioxidant capacity in the intestine and hepatopancreas of sub-adult grass carp (Ctenopharyngodon idella). RESULTS: Dietary methionine deficiency significantly decreased percentage weight gain (PWG), feed intake, feed efficiency and protein efficiency ratio, as well as activities of hepatopancreatic glutamate-oxaloacetate transaminase and muscle glutamate-pyruvate transaminase in sub-adult grass carp (P < 0...
2017: Journal of Animal Science and Biotechnology
https://www.readbyqxmd.com/read/28780615/a-knock-in-knock-out-mouse-model-of-hspb8-associated-distal-hereditary-motor-neuropathy-and-myopathy-reveals-toxic-gain-of-function-of-mutant-hspb8
#14
Delphine Bouhy, Manisha Juneja, Istvan Katona, Anne Holmgren, Bob Asselbergh, Vicky De Winter, Tino Hochepied, Steven Goossens, Jody J Haigh, Claude Libert, Chantal Ceuterick-de Groote, Joy Irobi, Joachim Weis, Vincent Timmerman
Mutations in the small heat shock protein B8 gene (HSPB8/HSP22) have been associated with distal hereditary motor neuropathy, Charcot-Marie-Tooth disease, and recently distal myopathy. It is so far not clear how mutant HSPB8 induces the neuronal and muscular phenotypes and if a common pathogenesis lies behind these diseases. Growing evidence points towards a role of HSPB8 in chaperone-associated autophagy, which has been shown to be a determinant for the clearance of poly-glutamine aggregates in neurodegenerative diseases but also for the maintenance of skeletal muscle myofibrils...
August 5, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28777016/threonine-supplementation-reduces-dietary-protein-and-improves-lipid-metabolism-in-pekin-ducks
#15
Y Jiang, J Tang, M Xie, Z G Wen, S Y Qiao, S-S Hou
1. This study was conducted to investigate the efficiency of threonine (Thr) supplementation on reducing dietary crude protein (CP) content and the effects of Thr on lipid metabolism in Pekin ducks. The effects of dietary CP concentration (160, 190, and 220 g/kg) and Thr supplemental concentration (0, 0.7, 1.4, 2.1, and 2.8 g/kg) on growth performance, carcass, liver lipid, and plasma profiles was determined in Pekin ducks from 1-21 d of age. 2. A total of 720 day-old male Pekin ducks were randomly allotted to 1 of 15 dietary treatments with 6 replicate cages of 8 birds per cage for each treatment according to average body weight...
August 4, 2017: British Poultry Science
https://www.readbyqxmd.com/read/28769877/protective-efficacy-of-coccidial-common-antigen-glyceraldehyde-3-phosphate-dehydrogenase-gapdh-against-challenge-with-three-eimeria-species
#16
Lu Tian, Wenyu Li, Xinmei Huang, Di Tian, Jianhua Liu, Xinchao Yang, Lianrui Liu, Ruofeng Yan, Lixin Xu, Xiangrui Li, Xiaokai Song
Coccidiosis is an intestinal disorder of poultry and often caused by simultaneous infections of several Eimeria species. GAPDH is one of the immunogenic common antigens among Eimeria tenella, E. acervulina, and E. maxima identified in our previous study. The present study was performed to further evaluate its immunogenicity and protective efficacy. The genes of GAPDH cloned from E. acervulina and E. maxima were named as EaGAPDH and EmGAPDH, respectively. The immunogenicity of recombinant proteins of EaGAPDH and EmGAPDH were analyzed by Western blot...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28765271/sirt6-regulates-metabolic-homeostasis-in-skeletal-muscle-through-activation-of-ampk
#17
Xiaona Cui, Lu Yao, Xiaoying Yang, Yong Gao, Fude Fang, Jun Zhang, Qinghua Wang, Yongsheng Chang
Due to the mass and functions in metabolism, skeletal muscle is one of major organs regulating whole-body metabolic homeostasis. SIRT6, a histone deacetylase, has been shown to regulate metabolism in liver and brain, however, its specific role in skeletal muscle is undetermined. In the present study we explored physiological function of SIRT6 in muscle. We generated a muscle-specific SIRT6 knockout mouse model. The mice with SIRT6 deficiency in muscle displayed impaired glucose homeostasis and insulin sensitivity, attenuated whole-body energy expenditure and weakened exercise performance...
August 1, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28763700/effect-of-dietary-tartary-buckwheat-extract-supplementation-on-growth-performance-meat-quality-and-antioxidant-activity-in-ewe-lambs
#18
Junxing Zhao, Kan Li, Rui Su, Wenzhong Liu, Youshe Ren, Chunxiang Zhang, Min Du, Jianxing Zhang
The objective of this study was to investigate the effect of dietary Tartary buckwheat extract (TBE) supplementation on animal growth performance, meat quality and antioxidative activity in the Longissimus thoracis et lumborum muscle of lambs. The results showed that dietary TBE increased body weight, average daily gain, carcass weight, dry matter intake, and digestive organ weight. Dietary TBE had no effect on the pH, color, shear force or intramuscular fat of Longissimus muscle examined, whereas the cooking loss was decreased...
July 25, 2017: Meat Science
https://www.readbyqxmd.com/read/28761720/age-related-changes-in-the-effects-of-strength-training-on-lower-leg-muscles-in-healthy-individuals-measured-using-mri
#19
Maria Psatha, Zhiqing Wu, Fiona Gammie, Aivaras Ratkevicius, Henning Wackerhage, Thomas W Redpath, Fiona J Gilbert, Judith R Meakin, Richard M Aspden
BACKGROUND: We previously measured the rate of regaining muscle strength during rehabilitation of lower leg muscles in patients following lower leg casting. Our primary aim in this study was to measure the rate of gain of strength in healthy individuals undergoing a similar training regime. Our secondary aim was to test the ability of MRI to provide a biomarker for muscle function. METHODS: Men and women were recruited in three age groups: 20-30, 50-65 and over 70 years...
2017: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/28757640/effects-of-peripheral-administration-of-a-neuromedin-u-receptor-2-selective-agonist-on-food-intake-and-body-weight-in-obese-mice
#20
T Kaisho, H Nagai, T Asakawa, N Suzuki, H Fujita, K Matsumiya, N Nishizawa, Y Kanematsu-Yamaki, K Dote, J-I Sakamoto, T Asami, S Takekawa
BACKGROUND: Neuromedin U (NMU) is a neuropeptide with various physiological functions including regulation of smooth-muscle contraction, blood pressure, stress responses, and feeding behaviors. NMU activates two distinct receptors, NMUR1 and NMUR2, which are predominantly expressed in peripheral tissues and the central nervous system, respectively. It is reported that the NMU signaling system regulates food intake and body weight via NMUR2, suggesting that an NMUR2 agonist exhibiting anorectic effects would be a potential therapy for obesity...
July 31, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
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