keyword
MENU ▼
Read by QxMD icon Read
search

Muscle catabolism

keyword
https://www.readbyqxmd.com/read/29774232/multiple-origins-of-green-blood-in-new-guinea-lizards
#1
Zachary B Rodriguez, Susan L Perkins, Christopher C Austin
Several species of lizards from the megadiverse island of New Guinea have evolved green blood. An unusually high concentration of the green bile pigment biliverdin in the circulatory system of these lizards makes the blood, muscles, bones, tongue, and mucosal tissues bright green in color, eclipsing the crimson color from their red blood cells. This is a remarkable physiological feature because bile pigments are toxic physiological waste products of red blood cell catabolism and, when chronically elevated, cause jaundice in humans and all other vertebrates...
May 2018: Science Advances
https://www.readbyqxmd.com/read/29773865/perlecan-a-heparan-sulfate-proteoglycan-regulates-systemic-metabolism-with-dynamic-changes-in-adipose-tissue-and-skeletal-muscle
#2
Yuri Yamashita, Satoshi Nakada, Toshinori Yoshihara, Takeshi Nara, Norihiko Furuya, Takashi Miida, Nobutaka Hattori, Eri Arikawa-Hirasawa
Perlecan (HSPG2), a heparan sulfate proteoglycan, is a component of basement membranes and participates in a variety of biological activities. Here, we show physiological roles of perlecan in both obesity and the onset of metabolic syndrome. The perinatal lethality-rescued perlecan knockout (Hspg2-/- -Tg) mice showed a smaller mass and cell size of white adipose tissues than control (WT-Tg) mice. Abnormal lipid deposition, such as fatty liver, was not detected in the Hspg2-/- -Tg mice, and those mice also consumed more fat as an energy source, likely due to their activated fatty acid oxidation...
May 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29771332/mechanisms-of-skeletal-muscle-wasting-in-a-mouse-model-for-myotonic-dystrophy-type-1
#3
Ginny R Morriss, Kimal Rajapakshe, Shixia Huang, Cristian Coarfa, Thomas A Cooper
Myotonic dystrophy type 1 (DM1) is a multisystemic disease resulting in severe muscle weakening and wasting. DM1 is caused by expansion of CTG repeats in the 3'-UTR of the DMPK gene. We have developed an inducible, skeletal muscle-specific mouse model of DM1 (CUG960) that expresses 960 CUG repeats in the context of human DMPK exons 11-15. CUG960 RNA-expressing mice induced at PN1, as well as adult-onset animals, show clear, measurable muscle wasting accompanied by severe histological defects including central myonuclei, reduced fiber cross sectional area, increased percentage of oxidative myofibers, and the presence of nuclear RNA foci that colocalize with Mbnl1 protein...
May 16, 2018: Human Molecular Genetics
https://www.readbyqxmd.com/read/29755574/branched-chain-amino-acids-in-health-and-disease-metabolism-alterations-in-blood-plasma-and-as-supplements
#4
REVIEW
Milan Holeček
Branched-chain amino acids (BCAAs; valine, leucine, and isoleucine) are essential amino acids with protein anabolic properties, which have been studied in a number of muscle wasting disorders for more than 50 years. However, until today, there is no consensus regarding their therapeutic effectiveness. In the article is demonstrated that the crucial roles in BCAA metabolism play: (i) skeletal muscle as the initial site of BCAA catabolism accompanied with the release of alanine and glutamine to the blood; (ii) activity of branched-chain keto acid dehydrogenase (BCKD); and (iii) amination of branched-chain keto acids (BCKAs) to BCAAs...
2018: Nutrition & Metabolism
https://www.readbyqxmd.com/read/29751280/evaluation-of-serum-insulin-like-growth-factor-1-and-26s-proteasome-concentrations-in-healthy-dogs-and-dogs-with-chronic-diseases-depending-on-body-condition-score
#5
Ingrid Gerke, Franz-Josef Kaup, Stephan Neumann
In patients suffering from chronic diseases, the objective assessment of metabolic states could be of interest for disease prognosis and therapeutic options. Therefore, the aim of this study was to assess insulin-like growth factor-1 (IGF-1) and 26S proteasome (26SP) in healthy dogs and dogs suffering from chronic diseases depending on their body condition score (BCS) and to examine their potential for objective assessment of anabolic and catabolic states. Serum concentrations of IGF-1, an anabolic hormone, and 26SP, a multiprotein complex which is part of the ubiquitin-proteasome pathway, by which the majority of endogenous proteins including the muscle proteins are degraded, were measured in 21 healthy dogs and 20 dogs with chronic diseases by canine ELISA...
April 26, 2018: Research in Veterinary Science
https://www.readbyqxmd.com/read/29740336/mediators-and-patterns-of-muscle-loss-in-chronic-systemic-inflammation
#6
REVIEW
Sandra Pérez-Baos, Iván Prieto-Potin, Jorge A Román-Blas, Olga Sánchez-Pernaute, Raquel Largo, Gabriel Herrero-Beaumont
Besides its primary function in locomotion, skeletal muscle (SKM), which represents up to half of human's weight, also plays a fundamental homeostatic role. Through the secretion of soluble peptides, or myokines, SKM interacts with major organs involved in metabolic processes. In turn, metabolic cues from these organs are received by muscle cells, which adapt their response accordingly. This is done through an intricate intracellular signaling network characterized by the cross-talking between anabolic and catabolic pathways...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29735266/neuraminidase-1-activates-insulin-receptor-and-reverses-insulin-resistance-in-obese-mice
#7
Anne Fougerat, Xuefang Pan, Victoria Smutova, Nikolaus Heveker, Christopher W Cairo, Tarik Issad, Bruno Larrivée, Jeffrey A Medin, Alexey V Pshezhetsky
OBJECTIVES: Neuraminidase 1 (NEU1) cleaves terminal sialic acids of glycoconjugates during lysosomal catabolism. It also modulates the structure and activity of cellular surface receptors affecting diverse pathways. Previously we demonstrated that NEU1 activates the insulin receptor (IR) and that NEU1-deficient CathAS190A-Neo mice (hypomorph of the NEU1 activator protein, cathepsin A/CathA) on a high-fat diet (HFD) develop hyperglycaemia and insulin resistance faster than wild-type animals...
April 21, 2018: Molecular Metabolism
https://www.readbyqxmd.com/read/29734150/association-between-increases-in-normalized-protein-catabolic-rate-and-increases-in-creatinine-generation-rate-in-dialysis-patients
#8
Norio Hanafusa, Daigo Kamei, Misao Tsukada, Naoko Miwa, Mizuki Komatsu, Shunji Shiohira, Masayuki Okazaki, Ryota Watanabe, Hiroshi Kawaguchi, Ken Tsuchiya, Kosaku Nitta
The older dialysis population is growing, and malnutrition and wasting syndrome are great concerns in this population. The management of these syndromes includes appropriate nutritional intake and physical activity. However, whether management in the form of an increase in protein intake has a beneficial effect on muscle mass has not been demonstrated. In this study, we investigated an association between changes of normalized protein catabolic rate (nPCR), as a proxy for protein intake and percent creatinine generation rate (%CGR), as a proxy for muscle mass in patients receiving hemodialysis...
2018: Contributions to Nephrology
https://www.readbyqxmd.com/read/29731655/immune-regulating-effects-of-exercise-on-cigarette-smoke-induced-inflammation
#9
REVIEW
Ashkan Madani, Katharina Alack, Manuel Jonas Richter, Karsten Krüger
Long-term cigarette smoking (LTCS) represents an important risk factor for cardiac infarction and stroke and the central risk factor for the development of a bronchial carcinoma, smoking-associated interstitial lung fibrosis, and chronic obstructive pulmonary disease. The pathophysiologic development of these diseases is suggested to be promoted by chronic and progressive inflammation. Cigarette smoking induces repetitive inflammatory insults followed by a chronic and progressive activation of the immune system...
2018: Journal of Inflammation Research
https://www.readbyqxmd.com/read/29723245/sarcopenia-and-myosteatosis-are-accompanied-by-distinct-biological-profiles-in-patients-with-pancreatic-and-periampullary-adenocarcinomas
#10
Cynthia Stretch, Jean-Michel Aubin, Beata Mickiewicz, Derek Leugner, Tariq Al-Manasra, Elizabeth Tobola, Santiago Salazar, Francis R Sutherland, Chad G Ball, Elijah Dixon, Hans J Vogel, Sambasivario Damaraju, Vickie E Baracos, Oliver F Bathe
INTRODUCTION: Pancreatic and periampullary adenocarcinomas are associated with abnormal body composition visible on CT scans, including low muscle mass (sarcopenia) and low muscle radiodensity due to fat infiltration in muscle (myosteatosis). The biological and clinical correlates to these features are poorly understood. METHODS: Clinical characteristics and outcomes were studied in 123 patients who underwent pancreaticoduodenectomy for pancreatic or non-pancreatic periampullary adenocarcinoma and who had available preoperative CT scans...
2018: PloS One
https://www.readbyqxmd.com/read/29709900/transcriptome-analysis-reveals-differential-gene-expression-in-intramuscular-adipose-tissues-of-jinhua-and-landrace-pigs
#11
Zhiguo Miao, Panpeng Wei, Muhammad Akram Khan, Jinzhou Zhang, Liping Guo, Dongyang Liu, Xiaojian Zhang, Yueyu Bai, Shan Wang
Meat is a rich source of protein, fatty acids and carbohydrates for human needs. In addition to necessary nutrients, high fat contents in pork increase the tenderness and juiciness of the meat, featuring diverse application in various dishes. This study investigated the transcriptomic profiles of intramuscular adipose tissues in Jinhua and Landrace pigs by employing advanced RNA sequencing. Results showed significant interesting to note that there were significant differences in the expression of genes. 1,632 genes showed significant differential expression, 837 genes were up-regulated and 195 genes were down-regulated...
May 1, 2018: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/29708079/barriers-to-cancer-nutrition-therapy-excess-catabolism-of-muscle-and-adipose-tissues-induced-by-tumour-products-and-chemotherapy
#12
Dalton L Schiessel, Vickie E Baracos
Cancer-associated malnutrition is driven by reduced dietary intake and by underlying metabolic changes (such as inflammation, anabolic resistance, proteolysis, lipolysis and futile cycling) induced by the tumour and activated immune cells. Cytotoxic and targeted chemotherapies also elicit proteolysis and lipolysis at the tissue level. In this review, we summarise specific mediators and chemotherapy effects that provoke excess proteolysis in muscle and excess lipolysis in adipose tissue. A nutritionally relevant question is whether and to what degree these catabolic changes can be reversed by nutritional therapy...
April 30, 2018: Proceedings of the Nutrition Society
https://www.readbyqxmd.com/read/29701916/high-protein-hypocaloric-nutrition-for-non-obese-critically-ill-patients
#13
L John Hoffer
High-protein hypocaloric nutrition, tailored to each patient's muscle mass, protein-catabolic severity, and exogenous energy tolerance, is the most plausible nutrition therapy in protein-catabolic critical illness. Sufficient protein provision could mitigate the rapid muscle atrophy characteristic of this disease while providing urgently needed amino acids to the central protein compartment and sites of tissue injury. The protein dose may range from 1.5 to 2.5 g protein (1.8-3.0 g free amino acids)/kg dry body weight per day...
April 27, 2018: Nutrition in Clinical Practice
https://www.readbyqxmd.com/read/29657030/rewiring-of-glutamine-metabolism-is-a-bioenergetic-adaptation-of-human-cells-with-mitochondrial-dna-mutations
#14
Qiuying Chen, Kathryne Kirk, Yevgeniya I Shurubor, Dazhi Zhao, Andrea J Arreguin, Ifrah Shahi, Federica Valsecchi, Guido Primiano, Elizabeth L Calder, Valerio Carelli, Travis T Denton, M Flint Beal, Steven S Gross, Giovanni Manfredi, Marilena D'Aurelio
Using molecular, biochemical, and untargeted stable isotope tracing approaches, we identify a previously unappreciated glutamine-derived α-ketoglutarate (αKG) energy-generating anaplerotic flux to be critical in mitochondrial DNA (mtDNA) mutant cells that harbor human disease-associated oxidative phosphorylation defects. Stimulating this flux with αKG supplementation enables the survival of diverse mtDNA mutant cells under otherwise lethal obligatory oxidative conditions. Strikingly, we demonstrate that when residual mitochondrial respiration in mtDNA mutant cells exceeds 45% of control levels, αKG oxidative flux prevails over reductive carboxylation...
April 9, 2018: Cell Metabolism
https://www.readbyqxmd.com/read/29644563/heat-acclimation-increases-mitochondrial-respiration-capacity-of-c2c12-myotubes-and-protects-against-lps-mediated-energy-deficit
#15
Meghan G Patton, Trevor L Gillum, Mandy C Szymanski, Lacey M Gould, Claire J Lauterbach, Roger A Vaughan, Matthew R Kuennen
This work investigated the effect of a 6-day heat acclimation (HA) protocol on myotube metabolic responses at baseline and in response to a subsequent lipopolysaccharide (LPS) challenge. C2C12 myotubes were incubated for 2 h/day at 40 °C for 6 days (HA) or maintained at 37 °C (C). Following 24-h recovery, myotubes were challenged with 500 ng/ml LPS for 2 h, then collected for analysis of protein markers of mitochondrial biogenesis and macronutrient storage. Functional significance of these changes was confirmed with mitochondrial respiration and glycolytic measurements on a Seahorse XF-96 analyzer...
April 11, 2018: Cell Stress & Chaperones
https://www.readbyqxmd.com/read/29627378/brown-adipose-tissue-derived-angptl4-controls-glucose-and-lipid-metabolism-and-regulates-thermogenesis
#16
Abhishek K Singh, Binod Aryal, Balkrishna Chaube, Noemi Rotllan, Luis Varela, Tamas L Horvath, Yajaira Suárez, Carlos Fernández-Hernando
OBJECTIVES: Brown adipose tissue (BAT) controls triglyceride-rich lipoprotein (TRL) catabolism. This process is mediated by the lipoprotein lipase (LPL), an enzyme that catalyzed the hydrolysis of triglyceride (TAG) in glycerol and fatty acids (FA), which are burned to generate heat. LPL activity is regulated by angiopoietin-like 4 (ANGPTL4), a secretory protein produced in adipose tissues (AT), liver, kidney, and muscle. While the role of ANGPTL4 in regulating lipoprotein metabolism is well established, the specific contribution of BAT derived ANGPTL4 in controlling lipid and glucose homeostasis is not well understood...
March 29, 2018: Molecular Metabolism
https://www.readbyqxmd.com/read/29618057/lsd1-mediates-metabolic-reprogramming-by-glucocorticoids-during-myogenic-differentiation
#17
Kotaro Anan, Shinjiro Hino, Noriaki Shimizu, Akihisa Sakamoto, Katsuya Nagaoka, Ryuta Takase, Kensaku Kohrogi, Hirotaka Araki, Yuko Hino, Shingo Usuki, Shinya Oki, Hirotoshi Tanaka, Kimitoshi Nakamura, Fumio Endo, Mitsuyoshi Nakao
The metabolic properties of cells are formed under the influence of environmental factors such as nutrients and hormones. Although such a metabolic program is likely initiated through epigenetic mechanisms, the direct links between metabolic cues and activities of chromatin modifiers remain largely unknown. In this study, we show that lysine-specific demethylase-1 (LSD1) controls the metabolic program in myogenic differentiation, under the action of catabolic hormone, glucocorticoids. By using transcriptomic and epigenomic approaches, we revealed that LSD1 bound to oxidative metabolism and slow-twitch myosin genes, and repressed their expression...
March 29, 2018: Nucleic Acids Research
https://www.readbyqxmd.com/read/29571464/the-roles-of-bacteria-in-the-biochemical-changes-of-chill-stored-bighead-carp-aristichthys-nobilis-proteins-degradation-biogenic-amines-accumulation-volatiles-production-and-nucleotides-catabolism
#18
Xiaochang Liu, Zhan Huang, Shiliang Jia, Jingbin Zhang, Kaifeng Li, Yongkang Luo
This study investigated the biochemical changes (proteins degradation, total volatile basic nitrogen, biogenic amines, volatile organic compounds, nucleotides catabolism and related enzymes) of bighead carp samples inoculated with four different bacteria (Shewanella putrefaciens, Aeromonas sobria, Acinetobacter bohemicus, and Pseudomonas helmanticensis) during storage at 4 ± 1 °C. A. sobria exhibited the strongest proteolytic activity. A. sobria, P. helmanticensis, and S. putrefaciens were responsible for putrescine production, whereas S...
July 30, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29571133/lc-ms-based-serum-fingerprinting-reveals-significant-dysregulation-of-phospholipids-in-chronic-heart-failure
#19
M Marcinkiewicz-Siemion, M Ciborowski, K Ptaszynska-Kopczynska, A Szpakowicz, A Lisowska, M Jasiewicz, E Waszkiewicz, A Kretowski, W J Musial, K A Kaminski
Cardiac and extracardiac lipid metabolism is known to be significantly altered in the course of the heart failure with reduced ejection fraction (HF-REF), however the precise mechanisms are not fully elucidated. The aim of the study was to use of untargeted metabolomics to identify and validate changes in the blood metabolites profile, occurring as a result of HF-REF development. The analyses were performed first in the derivation set (36 chronic HF-REF patients and 19 controls without the disease) and repeated in validation cohort (31 chronic HF-REF patients and 20 controls)...
March 15, 2018: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29550887/the-cryoprotectant-system-of-cope-s-gray-treefrog-dryophytes-chrysoscelis-responses-to-cold-acclimation-freezing-and-thawing
#20
M Clara F do Amaral, James Frisbie, David L Goldstein, Carissa M Krane
Cope's gray treefrog (Dryophytes chrysoscelis) is one of few freeze-tolerant frogs that mobilize glycerol as a cryoprotectant, yet cold and freezing-induced accumulation of this and other osmolytes has received little attention in this species. This study investigated the development of freeze tolerance in D. chrysoscelis, analyzing the response of the cryoprotectant system to cold acclimation, freezing, and thawing. Glycerol production was low and unresponsive to acclimation temperature, or duration of acclimation to 5 °C, except for one cold-acclimated frog that presented elevated glycerol in plasma, liver, and skeletal muscle...
March 17, 2018: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
keyword
keyword
84117
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"