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Metabolic OA

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https://www.readbyqxmd.com/read/29456693/seminal-bacterial-composition-in-patients-with-obstructive-and-non-obstructive-azoospermia
#1
Houyang Chen, Tao Luo, Tingtao Chen, Gongxian Wang
A number of culture-dependent and -independent studies have reported that the number and significance of bacterial species in semen may have been underestimated. The aim of the present study was to profile the seminal microbiome in patients with obstructive or non-obstructive azoospermia. A high-throughput sequencing method was adopted to sequence genomic DNA extracted from the semen of healthy people (C group), patients with obstructive azoospermia (OA group) and patients with non-obstructive azoospermia (NOA group)...
March 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29454594/low-magnesium-intake-is-associated-with-increased-knee-pain-in-subjects-with-radiographic-knee-osteoarthritis-data-from-the-osteoarthritis-initiative
#2
Anna Shmagel, Naoko Onizuka, Lisa Langsetmo, Tien Vo, Robert Foley, Kristine Ensrud, Peter Valen
OBJECTIVE: As magnesium mediates bone and muscle metabolism, inflammation, and pain signaling, we aimed to evaluate whether magnesium intake is associated with knee pain and function in radiographic knee osteoarthritis. METHODS: We investigated the associations between knee pain/function metrics and magnesium intake from food and supplements in 2548 Osteoarthritis Initiative cohort participants with prevalent radiographic knee OA (Kellgren-Lawrence score ≥2). Magnesium intake was assessed by Food Frequency Questionnaire at baseline...
February 15, 2018: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/29446045/effects-of-extracellular-orotic-acid-on-acute-contraction-induced-adaptation-patterns-in-c2c12-cells
#3
Thomas Beiter, Jens Hudemann, Christof Burgstahler, Andreas M Nieß, Barbara Munz
Dietary administration of orotic acid (OA), an intermediate in the pyrimidine biosynthetic pathway, is considered to provide a wide range of beneficial effects, including cardioprotection and exercise adaptation. Its mechanisms of action, when applied extracellularly, however, are barely understood. In this study, we evaluated potential effects of OA on skeletal muscle using an in vitro contraction model of electrically pulse-stimulated (EPS) C2C12 myotubes. By analyzing a subset of genes representing inflammatory, metabolic, and structural adaptation pathways, we could show that OA supplementation diminishes the EPS-provoked expression of inflammatory transcripts (interleukin 6, Il6; chemokine (C-X-C Motif) ligand 5, Cxcl5), and attenuated transcript levels of nuclear receptor subfamily 4 group A member 3 (Nr4A3), early growth response 1 (Egr1), activating transcription factor 3 (Atf3), and fast-oxidative MyHC-IIA isoform (Myh2)...
February 14, 2018: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/29444323/the-role-of-fat-and-inflammation-in-the-pathogenesis-and-management-of-osteoarthritis
#4
Hema Urban, Christopher B Little
OA is a complex disease involving mechanical, metabolic and inflammatory contributions to its aetiology. A key risk factor, obesity, is becoming an increasing focus of research due to its multiple potential impacts on OA incidence, progression and symptom severity. An increased load due to an increase in body mass has been well established as a mechanical contribution to the pathophysiology of OA. However, evidence of obesity-linked to OA in non-weight-bearing joints has implicated the biological role of adipose inflammation and metabolic abnormalities in OA...
February 9, 2018: Rheumatology
https://www.readbyqxmd.com/read/29440889/a-novel-therapeutic-strategy-for-cartilage-diseases-based-on-lipid-nanoparticle-rnai-delivery-system
#5
Shaowei Wang, Xiaochun Wei, Xiaojuan Sun, Chongwei Chen, Jingming Zhou, Ge Zhang, Heng Wu, Baosheng Guo, Lei Wei
Background: Cartilage degeneration affects millions of people but preventing its degeneration is a big challenge. Although RNA interference (RNAi) has been used in human trials via silencing specific genes, the cartilage RNAi has not been possible to date because the cartilage is an avascular and very dense tissue with very low permeability. Purpose: The objective of this study was to develop and validate a novel lipid nanoparticle (LNP)-siRNA delivery system that can prevent cartilage degeneration by knocking down specific genes...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29432786/oleic-acid-induces-the-novel-apolipoprotein-o-and-reduces-mitochondrial-membrane-potential-in-chicken-and-human-hepatoma-cells
#6
Anna M Weijler, Barbara Schmidinger, Stylianos Kapiotis, Hilde Laggner, Marcela Hermann
Non-alcoholic fatty liver disease (NAFLD) is marked by hepatic fat accumulation and reflects a spectrum of chronic liver diseases associated with obesity, impaired insulin sensitivity and dyslipidemia. Apolipoprotein O (ApoO) is a new member of the plasma apolipoprotein family that may play a role in lipid metabolism and electron transport activity of the mitochondrium. However, its physiological functions have not been elucidated yet. Based on our previous data in a non-mammalian experimental system [1], we hypothesized that hepatic expression of ApoO is tightly linked not only to diet-induced hepatosteatosis, but also to increased lipoprotein-production induced by, e...
February 9, 2018: Biochimie
https://www.readbyqxmd.com/read/29426008/colchicine-lack-of-effectiveness-in-symptom-and-inflammation-modification-in-knee-osteoarthritis-colkoa-a-randomized-controlled-trial
#7
Ying-Ying Leung, Benjamin Haaland, Janet L Huebner, Steven Bak-Siew Wong, Madeline Tjai, Chunyan Wang, Balram Chowbay, Julian Thumboo, Bibhas Chakraborty, Mann Hong Tan, Virginia B Kraus
OBJECTIVES: Uric acid may activate an innate immune response in osteoarthritis (OA), contributing to disease pathology and progression. We evaluated the effectiveness of colchicine on pain and function in symptomatic knee OA (KOA) and the underlying mechanism of action. METHODS: COLKOA was a double-blind, placebo-controlled, randomized trial comparing 16 weeks of treatment with 0.5 mg twice-daily oral colchicine to placebo for KOA. The primary endpoint was ≥30% improvement in total Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) score at week 16...
February 6, 2018: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/29420625/effects-of-ocean-acidification-and-hydrodynamic-conditions-on-carbon-metabolism-and-dissolved-organic-carbon-doc-fluxes-in-seagrass-populations
#8
Luis G Egea, Rocío Jiménez-Ramos, Ignacio Hernández, Tjeerd J Bouma, Fernando G Brun
Global change has been acknowledged as one of the main threats to the biosphere and its provision of ecosystem services, especially in marine ecosystems. Seagrasses play a critical ecological role in coastal ecosystems, but their responses to ocean acidification (OA) and climate change are not well understood. There have been previous studies focused on the effects of OA, but the outcome of interactions with co-factors predicted to alter during climate change still needs to be addressed. For example, the impact of higher CO2 and different hydrodynamic regimes on seagrass performance remains unknown...
2018: PloS One
https://www.readbyqxmd.com/read/29413962/homocysteine-causes-dysfunction-of-chondrocytes-and-oxidative-stress-through-repression-of-sirt1-ampk-pathway-a-possible-link-between-hyperhomocysteinemia-and-osteoarthritis
#9
Ching-Hou Ma, Yen Chun Chiua, Chin-Hsien Wu, I-Ming Jou, Yuan-Kun Tu, Ching-Hsia Hung, Pei-Ling Hsieh, Kun-Ling Tsai
Emerging evidence has indicated that the perturbed expression of homocysteine (Hcy) may induce mitochondrial dysfunction and disturb bone metabolism. Sirtuin 1 (SIRT1) and AMP-activated protein kinase (AMPK) are two critical sensors that regulate mitochondrial biogenesis and have been recognized as therapeutic targets in osteoarthritis (OA). This study was designed to test whether Hcy caused pro-osteoarthritic changes through modulation of SIRT1 and AMPK. Our results showed that administration of Hcy reduced the SIRT1/AMPK/PGC-1α signaling in chondrocytes, leading to mitochondrial dysfunction as a result of increased oxidative stress and apoptosis...
January 31, 2018: Redox Biology
https://www.readbyqxmd.com/read/29413358/the-role-of-fatty-acid-desaturase-fads-genes-in-oleic-acid-metabolism-fads1-%C3%AE-7-desaturates-11-20-1-to-7-11-20-2
#10
Hui Gyu Park, Matthew G Engel, Kyle Vogt-Lowell, Peter Lawrence, Kumar S Kothapalli, J Thomas Brenna
INTRODUCTION: In mammals, FADS2 catalyzes "front-end" Δ4-, Δ6-, and Δ8-desaturation of fatty acyl chains, whereas FADS1 has Δ5-desaturase activity. Eighteen and 20-carbon precursors to highly unsaturated n-3 and n-6 fatty acids are the usual substrates for FADS1 and FADS2. Our main objective was to characterize the metabolic fate of oleic acid (OA) due to action of FADS gene products. METHODS: MCF-7 cells were stably transformed with either FADS1 or FADS2 or empty vector...
January 2018: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/29406252/osteoarthritis-cerebrovascular-dysfunction-and-the-common-denominator-of-inflammation-a-narrative-review
#11
REVIEW
B K Al-Khazraji, C T Appleton, F Beier, T B Birmingham, J K Shoemaker
OBJECTIVE: Population-based cohort studies suggest an association between osteoarthritis (OA) and cerebrovascular disease, yet the mechanisms underlying vascular comorbidities in OA remain unclear. The purpose of this narrative review is to discuss the literature examining inflammation in OA with a focus on physiological mechanisms, and whether overlapping mechanisms exist in cerebrovascular dysfunction. METHOD: A literature search was conducted in PubMed using combinations of search terms: osteoarthritis, cerebrovascular (disease/dysfunction/risk), cardiovascular (disease/dysfunction/risk), aging/ageing, inflammation, inflammatory mediators, cytokine, c-reactive protein, interleukin, advanced glycation end-products, metabolic syndrome, reactive oxidative species, cognitive impairment, (vascular-related) dementia, small cerebral vessel disease, endothelial function, blood-brain barrier, gender/sex, hypertension, peripheral vascular health, and physical activity...
January 31, 2018: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/29396701/cartilage-turnover-and-intra-articular-corticosteroid-injections-in-knee-osteoarthritis
#12
Rainer Klocke, Kirsty Levasseur, George D Kitas, Jacqueline P Smith, George Hirsch
Intra-articular corticosteroid injections (IACI) are commonly used interventions for pain relief in patients with knee osteoarthritis (OA). Biomarkers may be helpful in further elucidating how IACI exert their effect. The aim of this study is to look at the response of biomarkers of cartilage and bone metabolism after IACI in knee OA. Eighty subjects with symptomatic knee OA [45% male, mean age (SD) 64 (11) years] underwent routine knee joint injection with 40 mg triamcinolone acetonide and 4 ml 1% lignocaine...
February 2, 2018: Rheumatology International
https://www.readbyqxmd.com/read/29377771/physical-activity-body-mass-index-and-clustered-metabolic-risk-in-u-s-adolescents-2007-2012-nhanes
#13
Bethany D Williams, Susan B Sisson, Chris A Ardern, Katrina D DuBose, Tammie M Johnson, M Ryan Richardson, James R Churilla
BACKGROUND: While studies to date have shown that children and adolescents who meet the current physical activity (PA) recommendations and maintain a healthy body weight demonstrate significantly lower cardiometabolic risk, there are some studies that suggest that the relationship between PA and metabolic risk may be mediated by adiposity. The aim of the present study was to examine variation in clustered metabolic risk (cMetS) in adolescents classified as not overweight/active (NOA), not overweight/not active (NONA), overweight/active (OA), and overweight/not active (ONA)...
January 29, 2018: Metabolic Syndrome and related Disorders
https://www.readbyqxmd.com/read/29376976/-the-feasibility-of-the-application-of-cryotherapy-and-radonotherapy-for-the-treatment-of-the-patients-presenting-with-osteoarthritis
#14
O Y Vakulenko, M A Rassulova, A N Razumov
Osteoarthritis (OA) is currently considered to be one of the most widespread diseases. Its main clinical symptoms include pain and dysfunction of joints. In the present review of the foreign and domestic literature, the questions of pathogenesis and risk factors underlying the development of osteoarthritis are discussed. The understanding of OA pathogenesis have altered essentially in the recent years which made necessary the search for the novel approaches to the treatment of this pathology. According to the modern views of OA origin and progression, its therapy should be based on the application of the combination of medicamentous and non-medicamentous modalities including, in particular, collective and individual activities focused on the implementation of the programs of therapeutic physical training as an obligatory component of ОА prophylaxis and treatment...
December 5, 2017: Voprosy Kurortologii, Fizioterapii, i Lechebnoĭ Fizicheskoĭ Kultury
https://www.readbyqxmd.com/read/29373736/metabolomics-of-osteoarthritis-emerging-novel-markers-and-their-potential-clinical-utility
#15
Guangju Zhai, Edward W Randell, Proton Rahman
OA is a multifactorial and progressive disease with no cure yet. Substantial efforts have been made and several biochemical and genetic markers have been reported, but neither alone nor in combination is adequate to identify early OA changes or determine disease progression with sufficient predictive values. Recent advances in metabolomics and its application to the study of OA have led to elucidation of involvement of several metabolic pathways and new specific metabolic markers for OA. Some of these metabolic pathways affect amino acid metabolism, including branched chain amino acids and arginine, and phospholipid metabolism involving conversion of phosphatidylcholine to lysophosphatidylcholine...
January 24, 2018: Rheumatology
https://www.readbyqxmd.com/read/29369319/endogenous-sialic-acid-engineered-micelles-a-multifunctional-platform-for-on-demand-methotrexate-delivery-and-bone-repair-of-rheumatoid-arthritis
#16
Xiao-Ling Xu, Wei-Shuo Li, Xiao-Juan Wang, Yang-Long Du, Xu-Qi Kang, Jing-Bo Hu, Shu-Juan Li, Xiao-Ying Ying, Jian You, Yong-Zhong Du
Rheumatoid arthritis (RA) patients have suffered from the current drug therapeutic regimen because of its high toxicity and the absence of bone regeneration for existing erosion, seriously affecting the quality of life. Herein, a sialic acid-dextran-octadecanoic acid (SA-Dex-OA) conjugate was synthesized to form micelles with a 55.06 μg mL-1 critical micelle concentration. The obtained micelles can encapsulate a disease-modifying anti-rheumatic drug, methotrexate (MTX), with 4.28% (w/w) drug content, featuring sustained drug release behavior over 48 h...
January 25, 2018: Nanoscale
https://www.readbyqxmd.com/read/29366446/estrogen-related-receptor-%C3%AE-is-a-novel-catabolic-regulator-of-osteoarthritis-pathogenesis
#17
Young-Ok Son, Jang-Soo Chun
Osteoarthritis (OA) is the most common form of arthritis and is a leading cause of disability with a large socioeconomic cost. OA is a whole-joint disease characterized by cartilage destruction, synovial inflammation, osteophyte formation, and subchondral bone sclerosis. To date, however, no effective disease-modifying therapies for OA have been developed. The estrogen-related receptors (ERRs), a family of orphan nuclear receptor transcription factors, are composed of ERRα, ERRβ, and ERRγ, which play diverse biological functions such as cellular energy metabolism...
January 25, 2018: BMB Reports
https://www.readbyqxmd.com/read/29345253/3-acetyl-oleanolic-acid-ameliorates-non-alcoholic-fatty-liver-disease-in-high-fat-diet-treated-rats-by-activating-ampk-related-pathways
#18
Qiong Ou-Yang, Chun-Xiao Xuan, Xue Wang, Han-Qiong Luo, Jin-E Liu, Lan-Lan Wang, Ting-Ting Li, Yu-Peng Chen, Jun Liu
3-Acetyl-oleanolic acid (3Ac-OA) is a derivative of oleanolic acid (OA), which has shown therapeutic beneficial effects on diabetes and metabolic syndrome. In this study we investigated whether 3Ac-OA exerted beneficial effect on non-alcoholic fatty liver disease (NAFLD) in rats and its potential underlying mechanisms. Treatment with 3Ac-OA (1-100 μmol/L) dose-dependently decreased the intracellular levels of total cholesterol (TC) and triglyceride (TG) in FFA-treated primary rat hepatocytes and human HepG2 cell lines in vitro...
January 18, 2018: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/29335849/differential-expression-of-adipokines-in-knee-osteoarthritis-patients-with-and-without-metabolic-syndrome
#19
Ning Dong, Yu-Hang Gao, Bo Liu, Cheng-Wu Zhao, Chen Yang, Shu-Qiang Li, Jian-Guo Liu, Xin Qi
PURPOSE: The purpose of this study was to compare adipokines levels in plasma and synovial fluid (SF) between knee osteoarthritis (OA) patients with and without metabolic syndrome (MetS), and to evaluate the associations between adipokines levels and clinical severity of knee osteoarthritis. METHODS: Eighty female patients with knee osteoarthritis were enrolled in the study. These patients were divided into two groups: patients with and without MetS. Clinical severity was evaluated according to visual analogue scale (VAS) pain scores and Western Ontario McMaster University Osteoarthritis Index (WOMAC) scores...
January 15, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29335493/biophysical-feedbacks-mediate-carbonate-chemistry-in-coastal-ecosystems-across-spatiotemporal-gradients
#20
Nyssa J Silbiger, Cascade J B Sorte
Ocean acidification (OA) projections are primarily based on open ocean environments, despite the ecological importance of coastal systems in which carbonate dynamics are fundamentally different. Using temperate tide pools as a natural laboratory, we quantified the relative contribution of community composition, ecosystem metabolism, and physical attributes to spatiotemporal variability in carbonate chemistry. We found that biological processes were the primary drivers of local pH conditions. Specifically, non-encrusting producer-dominated systems had the highest and most variable pH environments and the highest production rates, patterns that were consistent across sites spanning 11° of latitude and encompassing multiple gradients of natural variability...
January 15, 2018: Scientific Reports
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