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https://www.readbyqxmd.com/read/28734846/matrix-gla-protein-t-138c-polymorphism-is-associated-with-carotid-intima-media-thickness-and-predicts-mortality-in-patients-with-diabetic-nephropathy
#1
Stefanos Roumeliotis, Athanasios Roumeliotis, Stylianos Panagoutsos, Efstathia Giannakopoulou, Nikolaos Papanas, Vangelis G Manolopoulos, Ploumis Passadakis, Anna Tavridou
AIMS: We sought to determine the predictive value of Matrix Gla Protein MGP T-138C polymorphism in relation to all-cause mortality, cardiovascular mortality and cardiovascular events in patients with diabetic nephropathy (DN). METHODS: MGP T-138C polymorphism was assessed in 40 diabetic patients without nephropathy and 118 patients at different stages of DN, including patients on hemodialysis. Measurement of carotid intima-media thickness (cIMT) was performed using real-time B-mode ultrasonography...
June 30, 2017: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/28727149/aortic-microcalcification-associates-with-elastin-fragmentation-in-marfan-syndrome
#2
Shaynah A Wanga, Stijntje Hibender, Yanto Ridwan, Cindy van Roomen, Mariska Vos, Ingeborg van der Made, Nicole van Vliet, Romy Franken, Luigi Amjg van Riel, Maarten Groenink, Aeilko H Zwinderman, Barbara Jm Mulder, Carlie Jm de Vries, Jeroen Essers, Vivian de Waard
Marfan syndrome (MFS) is a connective tissue disorder, in which aortic rupture is the major cause of death. MFS patients with an aortic diameter below the advised limit for prophylactic surgery (<5cm) may unexpectedly experience an aortic dissection or rupture, despite yearly monitoring. Hence, there is a clear need for improved prognostic markers to predict such aortic events. We hypothesize that elastin fragments play a causal role in aortic calcification in MFS and that microcalcification serves as a marker for aortic disease severity...
July 20, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28707070/functional-role-of-matrix-gla-protein-in-glioma-cell-migration
#3
Mu-Hui Fu, Chih-Yen Wang, Yun-Ti Hsieh, Kuan-Min Fang, Shun-Fen Tzeng
Glioblastoma multiforme (GBM) is the most common and aggressive brain tumor subtype. Despite that metastasis of GBM beyond the central nervous system (CNS) is rare, its malignancy is attributed to the highly infiltration trait, leading to the difficulty of complete surgical excision. Matrix gla protein (MGP) is a vitamin K-dependent small secretory protein, and functions as a calcification inhibitor. The involvement of MGP function in glioma cell dynamics remains to be clarified. The study showed that a low proliferative rat C6 glioma cell line named as C6-2 exhibited faster migratory and invasive capability compared to that observed in a high tumorigenic rat C6 glioma cell line (called as C6-1)...
July 13, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28686548/roles-of-vitamins-d-and-k-nutrition-and-lifestyle-in-low-energy-bone-fractures-in-children-and-young-adults
#4
Michał Karpiński, Janusz Popko, Katarzyna Maresz, Vladimir Badmaev, Sidney J Stohs
The research on skeletal system health in children and young adults, while recognizing the important role of calcium and vitamin D, goes beyond these nutritional standards. This review focuses on the role of vitamin K in combination with vitamin D and other factors in bone health. The current understanding is that maintaining bone health and prevention of low-energy fractures in any pediatric population includes nutritional factors combined with an active lifestyle. Calcium, vitamin D, and vitamin K supplementation contribute independently and collectively to bone health...
July 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28657840/therapeutic-warfarin-use-and-the-extrahepatic-functions-of-vitamin-k-dependent-proteins
#5
C J Donaldson, D J Harrington
The impact of warfarin therapy on the functions of extrahepatic vitamin K-dependent proteins (VKDP) is less clearly understood and less widely recognised in clinical practice than that on the hepatic counterparts (clotting factors II, VII, IX and X). Warfarin inhibits osteocalcin, an abundant extrahepatic VKDP involved in the mineralisation and maturation of bone and thus, primarily by this mechanism, may have an adverse effect on bone health. Whilst some studies do link warfarin use to an increase in osteoporosis and fracture risk others have not...
June 28, 2017: British Journal of Biomedical Science
https://www.readbyqxmd.com/read/28654853/association-of-matrix-%C3%AE-carboxyglutamic-acid-protein-levels-with-insulin-resistance-and-lp-a-in-diabetes-a-cross-sectional-study
#6
Stavros Antonopoulos, Maria Mylonopoulou, Angeliki M Angelidi, Antonis A Kousoulis, Nicholas Tentolouris
AIMS: The risk of cardiovascular disease (CVD) and mortality is increased in patients with chronic kidney disease (CKD), with a background role of vascular calcification in the development of CVD also reported. Studies have demonstrated that high lipoprotein(a) (Lp(a)) levels accelerate the development of atherosclerolsis and are potentially involved in the vascular calcification. Matrix Gla Protein (MGP) seems to play an important role in vascular calcification. The aim of the study was to examine the potential association of MGP concentrations with Lp(a) and insulin resistance...
June 19, 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/28631230/sequence-analysis-of-chromosome-1-revealed-different-selection-patterns-between-chinese-wild-mice-and-laboratory-strains
#7
Fuyi Xu, Shixian Hu, Tianzhu Chao, Maochun Wang, Kai Li, Yuxun Zhou, Hongyan Xu, Junhua Xiao
Both natural and artificial selection play a critical role in animals' adaptation to the environment. Detection of the signature of selection in genomic regions can provide insights for understanding the function of specific phenotypes. It is generally assumed that laboratory mice may experience intense artificial selection while wild mice more natural selection. However, the differences of selection signature in the mouse genome and underlying genes between wild and laboratory mice remain unclear. In this study, we used two mouse populations: chromosome 1 (Chr 1) substitution lines (C1SLs) derived from Chinese wild mice and mouse genome project (MGP) sequenced inbred strains and two selection detection statistics: Fst and Tajima's D to identify the signature of selection footprint on Chr 1...
June 19, 2017: Molecular Genetics and Genomics: MGG
https://www.readbyqxmd.com/read/28626250/association-between-changes-in-visual-evoked-magnetic-fields-and-non-motor-features-in-parkinson-s-disease
#8
Yoshiro Fujisawa, Tomomi Minato, Jun-Ichi Uemura, Minoru Hoshiyama, Hirohisa Watanabe, Masaaki Hirayama
Visual dysfunction can be caused by several abnormalities, including dysfunctions in the visual cortex and retina. Our aim was to investigate changes in visual evoked brain responses in the primary visual cortex associated with Parkinson's disease (PD). Sixteen healthy control subjects and ten patients with PD participated in this study. We assessed the visual evoked magnetic field (VEF) using magnetoencephalography (MEG). Checkerboard pattern reversal (CPR) and monotonous grating pattern (MGP) stimulations were used...
February 2017: Nagoya Journal of Medical Science
https://www.readbyqxmd.com/read/28617274/supporting-constructed-wetlands-in-p-removal-efficiency-from-surface-water
#9
Agnieszka Bus, Agnieszka Karczmarczyk
The research investigated the implementation of suspended reactive filters to support the phosphorus (P) removal efficiency of constructed wetlands (CWs). The reactive material (RM) used in this study was autoclaved aerated concrete (AAC). The laboratory experiment consists of four plastic boxes filled with the volume of 10 L of artificial P solution with three variants of RM mass to volume ratio: 1:1 (g:L), 5:1 (g:L), 10:1 (g:L), and the blind probe 0:1 (g:L) as a reference. AAC of different weights (10, 50 and 100 g) was wrapped in a filter bag, put into boxes, and suspended...
June 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28605143/enhanced-serum-levels-of-matrix-gla-protein-and-bone-morphogenetic-protein-in-acute-coronary-syndrome-patients
#10
Zafer Buyukterzi, Ummugulsum Can, Sertac Alpaydin, Asuman Guzelant, Sukru Karaarslan, Mehmet Mustu, Duygu Kocyigit, Kadri Murat Gurses
BACKGROUND: Vascular calcification has been found to be associated with increased risk of cardiovascular (CV) morbidity and mortality. Various bone-associated proteins have been suggested to be related with this process. In this study, we aimed to evaluate whether serum levels of bone morphogenic protein-4 (BMP-4) and matrix Gla protein (MGP) differed in patients who were found to have normal epicardial coronary arteries or a culprit lesion in the coronary angiography leading to acute coronary syndrome (ACS)...
June 12, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28595558/the-role-of-placental-carbonyl-reducing-enzymes-in-biotransformation-of-bupropion-and-4-methylnitrosamino-1-3-pyridyl-1-butanone
#11
Valentina M Fokina, Svetlana L Patrikeeva, Cheryl Oncken, Gary Dv Hankins, Mahmoud S Ahmed, Tatiana N Nanovskaya
BACKGROUND: Bupropion (BUP) has a potential to be an effective pharmacotherapy for smoking cessation during pregnancy. Smoking during pregnancy stimulates placental carbonyl reductases that catalyze the biotransformation of BUP. 4-methylnitrosamino-1-(3-pyridyl)-1-butanone (NNK) is a potent carcinogen of cigarette smoke. Carbonyl reduction of NNK into 4-methylnitrosamino-1-(3-pyridyl)-1-butanol (NNAL) constitutes a major step in NNK detoxification. Thus, placentas of pregnant smokers on BUP therapy can become a site of drug-drug interaction...
June 6, 2017: Drug Metabolism Letters
https://www.readbyqxmd.com/read/28592418/growth-of-meibomian-gland-tissue-after-intraductal-meibomian-gland-probing-in-patients-with-obstructive-meibomian-gland-dysfunction
#12
Steven L Maskin, Whitney R Testa
PURPOSE: To investigate the impact of meibomian gland probing (MGP) on meibomian gland (MG) area from the upper lids of patients with obstructive meibomian gland dysfunction (o-MGD). METHODS: Retrospective study comparing pre-MGP/post-MGP non-contact infrared meibography results in patients with o-MGD, viewing signs of MG growth within total measurement field. RESULTS: Post-MGP meibography of 34 lids (19 patients, ≥4.5 to ≤12 months' follow-up) showed 41...
June 7, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28592319/high-dephosphorylated-uncarboxylated-mgp-in-hemodialysis-patients-risk-factors-and-response-to-vitamin-k2-a-pre-post-intervention-clinical-trial
#13
Mabel Aoun, Maha Makki, Hiba Azar, Hiam Matta, Dania Nehme Chelala
BACKGROUND: Vascular calcifications are highly prevalent in hemodialysis patients. Dephosphorylated-uncarboxylated MGP (dp-ucMGP) was found to increase in vitamin K-deficient patients and may be associated with vascular calcifications. Supplementation of hemodialysis patients with vitamin K2 (menaquinone-7) has been studied in Europe with a maximum 61% drop of dp-ucMGP levels. The aim of this study is to assess first the drop of dp-ucMGP in an Eastern Mediterranean cohort after vitamin K2 treatment and second the correlation between baseline dp-ucMGP and vascular calcification score...
June 7, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28550602/optimizing-the-modification-of-wood-waste-biochar-via-metal-oxides-to-remove-and-recover-phosphate-from-human-urine
#14
Kangning Xu, Chuke Zhang, Xiaomin Dou, Weifang Ma, Chengwen Wang
The recovery of phosphate from human urine has been considered as one of the most attractive benefits of urine source separation because P is an essential but limited macronutrient. This study investigated the approach to modify wood waste biochar via metal oxides aiming to recover phosphate from human urine to produce a value-added biochar. Results showed the phosphate removal ability was enhanced for the modified biochar pre-treated in modification solutions of MgCl2, AlCl3, CaCl2 and FeCl3, respectively, while natural biochar released phosphate to urine...
May 26, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28542410/gla-rich-protein-function-as-an-anti-inflammatory-agent-in-monocytes-macrophages-implications-for-calcification-related-chronic-inflammatory-diseases
#15
Carla S B Viegas, Rúben M Costa, Lúcia Santos, Paula A Videira, Zélia Silva, Nuna Araújo, Anjos L Macedo, António P Matos, Cees Vermeer, Dina C Simes
Calcification-related chronic inflammatory diseases are multifactorial pathological processes, involving a complex interplay between inflammation and calcification events in a positive feed-back loop driving disease progression. Gla-rich protein (GRP) is a vitamin K dependent protein (VKDP) shown to function as a calcification inhibitor in cardiovascular and articular tissues, and proposed as an anti-inflammatory agent in chondrocytes and synoviocytes, acting as a new crosstalk factor between these two interconnected events in osteoarthritis...
2017: PloS One
https://www.readbyqxmd.com/read/28533546/prostaglandin-e2-inhibits-matrix-mineralization-by-human-bone-marrow-stromal-cell-derived-osteoblasts-via-epac-dependent-camp-signaling
#16
Ali Mirsaidi, André N Tiaden, Peter J Richards
The osteoinductive properties of prostaglandin E2 (PGE2) and its signaling pathways have led to suggestions that it may serve as a potential therapeutic strategy for bone loss. However, the prominence of PGE2 as an inducer of bone formation is attributed primarily to findings from studies using rodent models. In the current study, we investigated the effects of PGE2 on human bone marrow stromal cell (hBMSC) lineage commitment and determined its mode of action. We demonstrated that PGE2 treatment of hBMSCs significantly altered the expression profile of several genes associated with osteoblast differentiation (RUNX2 and ALP) and maturation (BGLAP and MGP)...
May 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28524237/in-vitro-dialysis-of-cytokine-rich-plasma-with-high-and-medium-cut-off-membranes-reduces-its-procalcific-activity
#17
Kevin Willy, Michael Hulko, Markus Storr, Rose Speidel, Julia Gauss, Ralf Schindler, Daniel Zickler
Recently developed high-flux (HF) dialysis membranes with extended permeability provide better clearance of middle-sized molecules such as interleukins (ILs). Whether this modulation of inflammation influences the procalcific effects of septic plasma on vascular smooth muscle cells (VSMCs) is not known. To assess the effects of high cut-off (HCO) and medium cut-off (MCO) membranes on microinflammation and in vitro vascular calcification we developed a miniature dialysis model. Plasma samples from lipopolysaccharide-spiked blood were dialyzed with HF, HCO, and MCO membranes in an in vitro miniature dialysis model...
May 19, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28487368/matrix-gla-protein-deficiency-impairs-nasal-septum-growth-causing-midface-hypoplasia
#18
Juliana Marulanda, Hazem Eimar, Marc D McKee, Michelle Berkvens, Valentin Nelea, Hassem Roman, Teresa Borrás, Faleh Tamimi, Mathieu Ferron, Monzur Murshed
Genetic and environmental factors may lead to abnormal growth of the orofacial skeleton, affecting the overall structure of the face. In this study, we investigated the craniofacial abnormalities in a mouse model for Keutel syndrome, a rare genetic disease caused by loss-of-function mutations in the matrix Gla protein (MGP) gene. Keutel syndrome patients show diffuse ectopic calcification of cartilaginous tissues and impaired midface development. Our comparative cephalometric analyses of micro-computed tomography images revealed a severe midface hypoplasia in Mgp(-/-) mice...
July 7, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28464802/phosphate-binders-affect-vitamin-k-concentration-by-undesired-binding-an-in-vitro-study
#19
A Neradova, S P Schumacher, I Hubeek, P Lux, L J Schurgers, M G Vervloet
BACKGROUND: Vascular calcification is a major contributing factor to mortality in end stage renal disease (ESRD). Despite the efficacy of phosphate binders to improve hyperphosphatemia, data on vascular calcification are less clear. There seems to be a difference in attenuation or delay in progression between different binders. In this in vitro experiment we tested whether phosphate binders could limit bioavailability of vitamin K2 by undesired binding. Vitamin K-deficiency limits activation of the vascular tissue mineralization inhibitor matrix γ-carboxyglutamate (Gla) protein (MGP) thereby exacerbating vascular calcification...
May 2, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28460948/enzymatic-biotransformation-of-polyphenolics-increases-antioxidant-activity-of-red-and-white-grape-pomace
#20
Isabela M Martins, Bruna S Roberto, Jeffrey B Blumberg, C-Y Oliver Chen, Gabriela A Macedo
Grape pomace (GP) is a polyphenolic-rich byproduct of wine production. As most polyphenolics are either bound to cellular matrices or present as free polymeric forms, treatment with hydrolytic enzymes may act to increase GP functionalities. The aim of this study was to examine the impact of tannase alone (T), pectinase plus cellulase (PC) or a mixture of them (TPC) on the hydrolysis of polyphenolics in red GP (RGP), white GP (WGP), and mixed GP (MGP) from Brazilian wine production, as well as antioxidant activity of the products...
November 2016: Food Research International
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