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https://www.readbyqxmd.com/read/28109823/divergent-regulation-of-insulin-like-growth-factor-binding-protein-genes-in-cultured-atlantic-salmon-myotubes-under-different-models-of-catabolism-and-anabolism
#1
Daniel Garcia de la Serrana, Eduardo N Fuentes, Samuel A M Martin, Ian A Johnston, Daniel J Macqueen
Much attention has been given to insulin-like growth factor (Igf) pathways that regulate the balance of skeletal muscle protein synthesis and breakdown in response to a range of extrinsic and intrinsic signals. However, we have a less complete understanding of how the same signals modulate muscle mass upstream of such signalling, through a family of functionally-diverse Igf-binding proteins (Igfbps) that modify the availability of Igfs to the cell receptor Igf1r. We exposed cultured myotubes from Atlantic salmon (Salmo salar L...
January 18, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28107516/liver-amp-activated-protein-kinase-is-unnecessary-for-gluconeogenesis-but-protects-energy-state-during-nutrient-deprivation
#2
Clinton M Hasenour, D Emerson Ridley, Freyja D James, Curtis C Hughey, E Patrick Donahue, Benoit Viollet, Marc Foretz, Jamey D Young, David H Wasserman
AMPK is an energy sensor that protects cellular energy state by attenuating anabolic and promoting catabolic processes. AMPK signaling is purported to regulate hepatic gluconeogenesis and substrate oxidation; coordination of these processes is vital during nutrient deprivation or pathogenic during overnutrition. Here we directly test hepatic AMPK function in regulating metabolic fluxes that converge to produce glucose and energy in vivo. Flux analysis was applied in mice with a liver-specific deletion of AMPK (L-KO) or floxed control littermates to assess rates of hepatic glucose producing and citric acid cycle (CAC) fluxes...
2017: PloS One
https://www.readbyqxmd.com/read/28105936/pathways-of-aging-comparative-analysis-of-gene-signatures-in-replicative-senescence-and-stress-induced-premature-senescence
#3
Kamil C Kural, Neetu Tandon, Mikhail Skoblov, Olga V Kel-Margoulis, Ancha V Baranova
BACKGROUND: In culturing normal diploid cells, senescence may either happen naturally, in the form of replicative senescence, or it may be a consequence of external challenges such as oxidative stress. Here we present a comparative analysis aimed at reconstruction of molecular cascades specific for replicative (RS) and stressinduced senescence (SIPS) in human fibroblasts. RESULTS: An involvement of caspase-3/keratin-18 pathway and serine/threonine kinase Aurora A/ MDM2 pathway was shared between RS and SIPS...
December 28, 2016: BMC Genomics
https://www.readbyqxmd.com/read/28105708/impaired-ribosome-biogenesis-could-contribute-to-anabolic-resistance-to-strength-exercise-in-the-elderly
#4
Thomas Chaillou
No abstract text is available yet for this article.
January 19, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28105335/detection-of-stanozolol-in-the-urine-of-athletes-at-a-pg-level-the-possibility-of-passive-exposure
#5
Christina Tsitsimpikou, Konstantinos Tsarouhas, Demetrios A Spandidos, Aristides M Tsatsakis
Stanozolol is a synthetic heterocyclic steroid with anabolic and androgenic properties, which has been abused by several high-profile professional athletes. Stanozolol is also used in veterinary medicine to increase appetite, cause weight gain and treat certain types of anemia. The detection of stanozolol metabolites in human urine for doping control purposes depends on the analytical method applied. The most commonly applied methods in the World Anti-Doping Agency (WADA)-accredited doping control laboratories are gas chromatography/high-resolution mass spectrometry (GC/HRMS) or gas chromatography-mass spectrometry (GC/MS/MS)...
December 2016: Biomedical Reports
https://www.readbyqxmd.com/read/28102712/bone-morphogenetic-protein-2-and-7-mediate-the-anabolic-function-of-nucleus-pulposus-cells-with-discrete-mechanisms
#6
Victor Yl Leung, Lixiong Zhou, Wai-Kit Tam, Yi Sun, Fengjuan Lv, Guangqian Zhou, Kenneth Mc Cheung
Bone morphogenetic proteins (BMPs) play roles in promoting cell anabolism, especially extracellular matrix production. The difference between BMP members in their capacity to modulate intervertebral disc cell activity is yet to be defined. BMP-7/OP-1 has been shown to retard disc degeneration. We compared the activity of BMP-7 with BMP-2 on nucleus pulposus (NP) cell phenotype and function, and investigated how they differentially affect the gene expression profiles of signaling cascade components in human NP cells under degenerative states...
January 19, 2017: Connective Tissue Research
https://www.readbyqxmd.com/read/28101875/sustanon-induces-dose-independent-hypertrophy-and-satellite-cell-proliferation-in-slow-oxidative-fibers-of-avian-skeletal-muscle
#7
Mohammed Z Allouh, Ahmad A Jarrar, Hasan A Asfour, Raed S Said, Emad I Shaqoura
Sustanon is a well-known anabolic drug that is used to treat hypogonadism and restore muscle mass and bone density. As research to date has been limited to its effects in glycolytic fibers, this study aimed to investigate the dose-related effects of Sustanon on the oxidative fibers of avian skeletal muscle. Adult female chickens were randomly divided into 4 groups: control (C), received a dose of 100 μl normal saline per injection; and Sustanon-1, -2, and -3 (S1, S2, and S3), that received a dose of 12.5, 25, or 50 mg/kg Sustanon per injection, respectively...
January 19, 2017: Histology and Histopathology
https://www.readbyqxmd.com/read/28099900/skeletal-muscle-aging-influence-of-oxidative-stress-and-physical-exercise
#8
REVIEW
Mariana Janini Gomes, Paula Felippe Martinez, Luana Urbano Pagan, Ricardo Luiz Damatto, Marcelo Diacardia Mariano Cezar, Aline Regina Ruiz Lima, Katashi Okoshi, Marina Politi Okoshi
Skeletal muscle abnormalities are responsible for significant disability in the elderly. Sarcopenia is the main alteration occurring during senescence and a key public health issue as it predicts frailty, poor quality of life, and mortality. Several factors such as reduced physical activity, hormonal changes, insulin resistance, genetic susceptibility, appetite loss, and nutritional deficiencies are involved in the physiopathology of muscle changes. Sarcopenia is characterized by structural, biochemical, molecular and functional muscle changes...
January 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28097305/enhanced-recovery-after-surgery-a-review
#9
Olle Ljungqvist, Michael Scott, Kenneth C Fearon
Importance: Enhanced Recovery After Surgery (ERAS) is a paradigm shift in perioperative care, resulting in substantial improvements in clinical outcomes and cost savings. Observations: Enhanced Recovery After Surgery is a multimodal, multidisciplinary approach to the care of the surgical patient. Enhanced Recovery After Surgery process implementation involves a team consisting of surgeons, anesthetists, an ERAS coordinator (often a nurse or a physician assistant), and staff from units that care for the surgical patient...
January 11, 2017: JAMA Surgery
https://www.readbyqxmd.com/read/28097228/kappa-opioid-receptor-signaling-protects-cartilage-tissue-against-posttraumatic-degeneration
#10
Ling Wu, Shu Zhang, Ruzanna Shkhyan, Siyoung Lee, Francesca Gullo, Claire D Eliasberg, Frank A Petrigliano, Kai Ba, Jing Wang, Yunfeng Lin, Denis Evseenko
Osteoarthritis is the most common form of arthritis, and pain relief with opioid-like drugs is a commonly used therapeutic for osteoarthritic patients. Recent studies published by our group showed that the kappa opioid receptor (KOR) is highly expressed during human development in joint-forming cells. However, the precise role of this receptor in the skeletal system remains elusive. The main aim of the current study was to investigate the role of KOR signaling in synovial and cartilaginous tissues in pathological conditions...
January 12, 2017: JCI Insight
https://www.readbyqxmd.com/read/28096419/stromal-cues-regulate-the-pancreatic-cancer-epigenome-and-metabolome
#11
Mara H Sherman, Ruth T Yu, Tiffany W Tseng, Cristovao M Sousa, Sihao Liu, Morgan L Truitt, Nanhai He, Ning Ding, Christopher Liddle, Annette R Atkins, Mathias Leblanc, Eric A Collisson, John M Asara, Alec C Kimmelman, Michael Downes, Ronald M Evans
A fibroinflammatory stromal reaction cooperates with oncogenic signaling to influence pancreatic ductal adenocarcinoma (PDAC) initiation, progression, and therapeutic outcome, yet the mechanistic underpinning of this crosstalk remains poorly understood. Here we show that stromal cues elicit an adaptive response in the cancer cell including the rapid mobilization of a transcriptional network implicated in accelerated growth, along with anabolic changes of an altered metabolome. The close overlap of stroma-induced changes in vitro with those previously shown to be regulated by oncogenic Kras in vivo suggests that oncogenic Kras signaling-a hallmark and key driver of PDAC-is contingent on stromal inputs...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28096088/how-i-treat-acquired-aplastic-anemia
#12
Andrea Bacigalupo
Acquired severe aplastic anemia (SAA) is a rare hematologic disease associated with significant morbidity and mortality. Immune destruction of hemopoietic stem cells, plays an important role in the pathogenesis, as shown by successful treatment with immunosuppressive agents (IST), leading to transfusion independence, or complete recovery of peripheral blood counts, in a proportion of patients. Growth factors, can be combined with IST, and may improve response rates, as recently shown with thrombopoietin analogs...
January 17, 2017: Blood
https://www.readbyqxmd.com/read/28093944/healing-efficacy-of-fracture-targeted-gsk3%C3%AE-inhibitor-loaded-micelles-for-improved-fracture-repair
#13
Stewart A Low, Chris V Galliford, Yava L Jones-Hall, Jyoti Roy, Jiyuan Yang, Philip S Low, Jindřich Kopeček
AIM: To evaluate the fracture healing capabilities of a GSK3β inhibitor, 6-bromoindirubin-3'-oxime, coupled with an aspartic acid octapeptide in a micellar delivery system. MATERIALS & METHODS: The efficacy of the intravenously administered micelles to accelerate healing of femoral fracture in mice was evaluated. Micro-computed tomography analysis was employed to obtain bone density, total volume, relative volume, trabecular thickness and trabecular spacing. RESULTS: Both fracture bone mineral density and volume were significantly higher in the micelle treatment groups when compared with controls...
January 17, 2017: Nanomedicine
https://www.readbyqxmd.com/read/28093897/presence-of-early-stage-cancer-does-not-impair-the-early-protein-metabolic-response-to-major-surgery
#14
Mariëlle P K J Engelen, V Suzanne Klimberg, Arianna Allasia, Nicolaas Ep Deutz
BACKGROUND: Combined bilateral mastectomy and reconstruction is a common major surgical procedure in women with breast cancer and in those with a family history of breast cancer. As this large surgical procedure induces muscle protein loss, a preserved anabolic response to nutrition is warranted for optimal recovery. It is unclear whether the presence of early stage cancer negatively affects the protein metabolic response to major surgery as this would mandate perioperative nutritional support...
January 16, 2017: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/28092686/epigenomic-reprogramming-during-pancreatic-cancer-progression-links-anabolic-glucose-metabolism-to-distant-metastasis
#15
Oliver G McDonald, Xin Li, Tyler Saunders, Rakel Tryggvadottir, Samantha J Mentch, Marc O Warmoes, Anna E Word, Alessandro Carrer, Tal H Salz, Sonoko Natsume, Kimberly M Stauffer, Alvin Makohon-Moore, Yi Zhong, Hao Wu, Kathryn E Wellen, Jason W Locasale, Christine A Iacobuzio-Donahue, Andrew P Feinberg
During the progression of pancreatic ductal adenocarcinoma (PDAC), heterogeneous subclonal populations emerge that drive primary tumor growth, regional spread, distant metastasis, and patient death. However, the genetics of metastases largely reflects that of the primary tumor in untreated patients, and PDAC driver mutations are shared by all subclones. This raises the possibility that an epigenetic process might operate during metastasis. Here we report large-scale reprogramming of chromatin modifications during the natural evolution of distant metastasis...
January 16, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28092678/6-phosphofructo-2-kinase-fructose-2-6-biphosphatase-4-is-essential-for-p53-null-cancer-cells
#16
S Ros, J Flöter, I Kaymak, C Da Costa, A Houddane, S Dubuis, B Griffiths, R Mitter, S Walz, S Blake, A Behrens, K M Brindle, N Zamboni, M H Rider, A Schulze
The bifunctional enzyme 6-phosphofructo-2-kinase/fructose-2,6-biphosphatase-4 (PFKFB4) controls metabolic flux through allosteric regulation of glycolysis. Here we show that p53 regulates the expression of PFKFB4 and that p53-deficient cancer cells are highly dependent on the function of this enzyme. We found that p53 downregulates PFKFB4 expression by binding to its promoter and mediating transcriptional repression via histone deacetylases. Depletion of PFKFB4 from p53-deficient cancer cells increased levels of the allosteric regulator fructose-2,6-bisphosphate, leading to increased glycolytic activity but decreased routing of metabolites through the oxidative arm of the pentose-phosphate pathway...
January 16, 2017: Oncogene
https://www.readbyqxmd.com/read/28091848/a-novel-combination-treatment-to-stimulate-bone-healing-and-regeneration-under-hypoxic-conditions-photobiomodulation-and-melatonin
#17
Jang-Ho Son, Bong-Soo Park, In-Ryoung Kim, Iel-Yong Sung, Yeong-Cheol Cho, Jung-Soo Kim, Yong-Deok Kim
Melatonin has anabolic effects on the bone, even under hypoxia, and laser irradiation has been shown to improve osteoblastic differentiation. The aim of this study was to investigate whether laser irradiation and melatonin would have synergistic effects on osteoblastic differentiation and mineralization under hypoxic conditions. MC3T3-E1 cells were exposed to 1% oxygen tension for the hypoxia condition. The cells were divided into four groups: G1-osteoblast differentiation medium only (as the hypoxic condition), G2-treatment with 50 μM melatonin only, G3-laser irradiation (808 nm, 80 mW, GaAlAs diode) only, and G4-treatment with 50 μM melatonin and laser irradiation (808 nm, 80 mW, GaAlAs diode)...
January 13, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28089831/monomethyltransferase-setd8-regulates-breast-cancer-metabolism-via-stabilizing-hypoxia-inducible-factor-1%C3%AE
#18
Run Huang, Yang Yu, Xiangyun Zong, Xiaolin Li, Lisi Ma, Qi Zheng
SETD8 is a methyltransferase that specifically catalyzes the monomethylation of lysine 20 on histone H4. Previous studies have demonstrated that SETD8 is associated with proper cell cycle progression, DNA damage response, and transcriptional regulation. A recent study revealed that SETD8 played an important role in epithelial-mesenchymal transition (EMT) in association with TWIST and enhanced metastatic potential of breast cancer cells. However, the contribution of SETD8 to metabolism reprogramming, one hallmark of cancer, has never been reported...
January 13, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28089422/low-magnitude-mechanical-signals-and-the-spine-a-review-of-current-and-future-applications
#19
REVIEW
Martin H Pham, Zorica Buser, Jeffrey C Wang, Frank L Acosta
Animal and human studies demonstrate the anabolic properties of low-magnitude mechanical stimulation (LMMS) in its ability to improve bone formation by enhancing the proliferation of mesenchymal stem cells and their subsequent commitment down an osteoblastic lineage. Response to mechanical strains as low as 10μɛ have been seen, illustrating the sensitivity of mechanosensory cells to mechanotransduction pathways. Applications to the spine include treatment of osteoporosis in preparation for instrumented fusion, fracture reduction in spinal cord injury patients to slow bone mineral density loss, and bone tissue engineering and enhancement of bone-implant osseointegration for pseudarthrosis and hardware failure...
January 12, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28088723/discovery-and-metagenomic-analysis-of-an-anammox-bacterial-enrichment-related-to-candidatus-brocadia-caroliniensis-in-a-full-scale-glycerol-fed-nitritation-denitritation-separate-centrate-treatment-process
#20
Hongkeun Park, Ariane C Brotto, Mark C M van Loosdrecht, Kartik Chandran
A distinctive red biofilm was observed in a glycerol-fed digester liquid effluent treatment process coupling partial nitrification (nitritation) and partial denitrification (denitritation) processes. Based on initial phylogenetic screening using 16S rRNA clone libraries and quantitative polymerase chain reaction, the biofilm was enriched in novel anaerobic ammonium oxidizing bacteria (AMX/anammox) closely related to Candidatus "Brocadia caroliniensis". The metabolic functionality of the C. "Brocadia caroliniensis" enrichment was further explored using high-throughput sequencing and de novo metagenome assembly...
January 6, 2017: Water Research
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