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calcification calcified

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https://www.readbyqxmd.com/read/28544002/biological-effects-and-osteoarthritic-disease-modifying-activity-of-small-molecule-cm-01
#1
Yubo Sun, Andrea Roberts, David R Mauerhan, Michael Cox, Edward N Hanley
Phosphocitrate inhibits cartilage degeneration, however, the prospect of phosphocitrate as an oral disease modifying drug might be limited. The purpose of this study was to investigate the biological effects and disease-modifying activity of a phosphocitrate "analogue", CM-01 (Carolinas Molecule-01), and test the hypothesis that CM-01 is a disease modifying drug for osteoarthritis therapy. The effects of CM-01 on calcium crystal-induced expression of matrix metalloproteinase-1 and interleukin-1 beta, cell-mediated calcification and production of proteoglycan by chondrocytes were examined in cell cultures...
May 25, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28542096/modified-dual-energy-algorithm-for-calcified-plaque-removal-evaluation-in-carotid-computed-tomography-angiography-and-comparison-with-digital-subtraction-angiography
#2
Manoj Mannil, Jaychandran Ramachandran, Ilaria Vittoria de Martini, Susanne Wegener, Bernhard Schmidt, Thomas Flohr, Bernhard Krauss, Antonios Valavanis, Hatem Alkadhi, Sebastian Winklhofer
OBJECTIVES: Computed tomography angiography (CTA) is a valuable tool for the assessment of carotid artery stenosis. However, blooming artifacts from calcified plaques might result in an overestimation of the stenosis grade. The aim of this study was to investigate a new dual-energy computed tomography (DECT) technique with a modified 3-material decomposition algorithm for calcium removal in extracranial carotid artery stenosis. MATERIALS AND METHODS: In this retrospective, institutional review board-approved study, 30 calcified carotid plaques in 22 patients (15 men; mean age, 73 ± 10 years) with clinical suspicion of stroke were included...
May 24, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28533519/ocean-acidification-compromises-a-planktic-calcifier-with-implications-for-global-carbon-cycling
#3
Catherine V Davis, Emily B Rivest, Tessa M Hill, Brian Gaylord, Ann D Russell, Eric Sanford
Anthropogenically-forced changes in ocean chemistry at both the global and regional scale have the potential to negatively impact calcifying plankton, which play a key role in ecosystem functioning and marine carbon cycling. We cultured a globally important calcifying marine plankter (the foraminifer, Globigerina bulloides) under an ecologically relevant range of seawater pH (7.5 to 8.3 total scale). Multiple metrics of calcification and physiological performance varied with pH. At pH > 8.0, increased calcification occurred without a concomitant rise in respiration rates...
May 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28529094/outcomes-of-patients-with-myocardial-infarction-who-underwent-orbital-atherectomy-for-severely-calcified-lesions
#4
Michael S Lee, Evan Shlofmitz, Gentian Lluri, Jeremy Kong, Natalya Neverova, Richard Shlofmitz
OBJECTIVES: This study analyzed the outcomes of patients who presented with non-ST-elevation myocardial infarction (NSTEMI) and subsequently underwent orbital atherectomy for severe coronary artery calcification (CAC). BACKGROUND: Patients who present with NSTEMI have increased risk for death and recurrent MI after percutaneous coronary intervention (PCI). Patients with severe CAC have worse outcomes after PCI.Orbital atherectomy modifies calcified plaque, facilitating stent delivery and optimizing stent expansion...
May 7, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/28526853/response-of-coral-calcification-and-calcifying-fluid-composition-to-thermally-induced-bleaching-stress
#5
J P D'Olivo, M T McCulloch
Severe, global-scale thermal stress events like those of 1998 and 2016, are becoming more frequent and intense, potentially compromising the future of coral reefs. Here we report the effects of the 1998 bleaching event on coral calcification as well as the composition of the calcifying fluid (cf) from which corals precipitate their calcium carbonate skeletons. This was investigated by using the Sr/Ca, Li/Mg (temperature), and boron isotopes (δ(11)B) and B/Ca (carbonate chemistry) proxies in a Porites sp. coral...
May 19, 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
#6
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/28522785/infeasibility-of-endoscopic-transmural-drainage-due-to-pancreatic-pseudocyst-wall-calcifications-case-report
#7
Andrzej Krajewski, Gustaw Lech, Marcin Makiewicz, Andrzej Kluciński, Monika Wojtasik, Sławomir Kozieł, Maciej Słodkowski
Postinflammatory pancreatic pseudocysts are one of the most common complications of acute pancreatitis. In most cases, pseudocysts self-absorb in the course of treatment of pancreatitis. In some patients, pancreatic pseudocysts are symptomatic and cause pain, problems with gastrointestinal transit, and other complications. In such cases, drainage or resection should be performed. Among the invasive methods, mini invasive procedures like endoscopic transmural drainage through the wall of the stomach or duodenum play an important role...
February 28, 2017: Polski Przeglad Chirurgiczny
https://www.readbyqxmd.com/read/28521632/hepatic-calcified-tumor-like-mass-complicating-umbilical-vein-catheterization-in-a-neonate
#8
Jeffrey M Resnick, Brett Carmichael, Audra Winder, Kathleen M Dominguez
Presented is a case of a hepatic calcified mass complicating umbilical vein catheterization in a neonate and diagnosed by wedge biopsy. Wedge biopsy of the hepatic mass, situated in proximity to the falciform ligament, revealed expansion of portal tracts by fibrosis and calcification. Some aggregates of calcified material appeared in ectatic vascular spaces. The biopsy findings accounted for the radiographic appearance of the mass and the constellation of features were deemed indicative of calcification secondary to umbilical vein catheterization...
June 2017: Pediatric and Developmental Pathology
https://www.readbyqxmd.com/read/28515585/calcification-of-the-submandibular-gland-in-a-patient-with-chickenpox
#9
Cetin Celenk, Peruze Celenk
The pneumonia virus of chickenpox is now known to cause scattered calcified foci in the lungs, however to our knowledge, recent literature has not discussed calcification in the salivary glands. A 15-year-old boy consulted the department of radiology because of a swelling on the right side of the submandibular area. Radiological assessment included an ultrasonography and computerized tomography scan of the neck area, which demonstrated intraparenchymal amorph calcification, with approximately 13 mm diameter in the right submandibular gland...
January 2017: Indian Journal of Radiology & Imaging
https://www.readbyqxmd.com/read/28509316/effects-of-17%C3%AE-estradioland-raloxifene-on-endothelial-opg-and-rankl-secretion
#10
Wojciech Karwowski, Katarzyna Lekesiz, Ewa Koc-Żórawska, Krzysztof Wnuczko, Hanna Borysewicz-Sanczyk, Beata Naumnik
OBJECTIVES: This study aims to asses the effects of estradiol vs. raloxifene on the levels of osteoprotegerin and soluble Receptor Activator of Nuclear Factor kB Ligand (sRANKL) in Human Umbilical Vein Endothelial Cells (HUVEC) culture in standard and calcifying medium. MATERIAL AND METHODS: Human Umbilical Vein Endothelial Cells were isolated from human umbilical vein by standard method. The supernatant concentrations of osteoprotegerin (OPG) and sRANKL (ELISA) were determined after incubation with glicerophosphate, estradiol , raloxifene, glicerophoshate and estradiol, glicerophosphate and raloxifene in comparison with control group at four designated time points (0, 1, 2 and 4 days of incubation)...
2017: Ginekologia Polska
https://www.readbyqxmd.com/read/28508730/a-rare-fatality-due-to-calcified-stylohyoid-ligament-eagle-syndrome
#11
Avneesh Gupta, Anil Aggrawal, Puneet Setia
The elongation or calcification of the stylohyoid ligament that leads to pressure symptoms, or entrapment of nearby glossopharyngeal nerve or carotid artery, is known as Eagle syndrome. A PubMed search leads to finding of rare fatality among the 49 reported cases. In the present case, the deceased was a 40-year-old male who choked on his food. We hypothesise that the impaction of food in the upper respiratory tract, as well as the inability to intubate the person, were both the result of the calcified stylohyoid ligament...
June 2017: Medico-legal Journal
https://www.readbyqxmd.com/read/28505294/anticalcification-effect-of-a-combination-of-decellularization-organic-solvents-and-amino-acid-detoxification-on-glutaraldehyde-fixed-xenopericardial-heart-valves-in-a-large-animal-long-term-circulatory-model
#12
Chun Soo Park, Yong Jin Kim, Jeong Ryul Lee, Hong-Gook Lim, Ji-Eun Chang, Saeromi Jeong, Nayun Kwon
OBJECTIVES: : We aimed to investigate the effect of a combination of anticalcification treatments, which were effective for preventing calcification in a small animal experiment, on glutaraldehyde-fixed xenopericardial valves using a large-animal long-term circulatory model. METHODS: : Valved conduits were made of porcine pericardium as a leaflet and bovine pericardium as a conduit and were implanted into the right ventricular outflow tract of goats under cardiopulmonary bypass...
May 12, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28502741/high-metabolic-activity-of-tissue-nonspecific-alkaline-phosphatase-not-only-in-young-but-also-in-adult-bone-as-demonstrated-using-a-new-histochemical-detection-protocol
#13
I Piotr Maly, Elisabeth Eppler, Magdalena Müller-Gerbl
Tissue-nonspecific alkaline phosphatase (TNAP) is playing a key role in bone calcification, as has been demonstrated in different mammalian species including human and rodents. However, to investigate age-related changes during life history, histochemical demonstration of TNAP is severely hampered, particularly in the elderly, by technical difficulties associated with sectioning calcified tissue. Sufficient fixation must precede decalcification since poorly fixed bone tissue is exposed to the deleterious effects of decalcification reagents...
May 11, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28499595/impact-of-calcium-on-chronic-total-occlusion-percutaneous-coronary-interventions
#14
Judit Karacsonyi, Dimitri Karmpaliotis, Khaldoon Alaswad, Farouc A Jaffer, Robert W Yeh, Mitul Patel, Ehtisham Mahmud, William Lombardi, Michael R Wyman, Anthony Doing, Jeffrey W Moses, Ajay Kirtane, Manish Parikh, Ziad Ali, David Kandzari, Nicholas Lembo, Santiago Garcia, Barbara A Danek, Aris Karatasakis, Erica Resendes, Pratik Kalsaria, Bavana V Rangan, Imre Ungi, Craig A Thompson, Subhash Banerjee, Emmanouil S Brilakis
We sought to examine the impact of calcific deposits on the outcomes of chronic total occlusion (CTO) percutaneous coronary intervention (PCI). The outcomes of 1,476 consecutive CTO PCIs performed in 1,453 patients (65.5 ± 10 years, 85% male) between 2012 and 2016 at 11 US centers were evaluated. Moderate or severe quantity of calcium was present in 58% of target lesions. Calcified lesions were more tortuous and more likely to have proximal cap ambiguity and interventional collaterals. PCI of moderately/severely calcified CTOs more often required use of the retrograde approach (54% vs 30%, p <0...
April 13, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28488215/numerical-simulation-of-stent-angioplasty-with-predilation-an-investigation-into-lesion-constitutive-representation-and-calcification-influence
#15
C Conway, J P McGarry, E R Edelman, P E McHugh
It is acceptable clinical practice to predilate a severely occluded vessel to allow better positioning of endovascular stents, and while the impact of this intervention has been examined for aggregate response in animals there has been no means to examine whether there are specific vessels that might benefit. Finite element methods offer the singular ability to explore the mechanical response of arteries with specific pathologic alterations in mechanics to stenting and predilation. We examined varying representations of atherosclerotic tissue including homogeneous and heterogeneous dispersion of calcified particles, and elastic, pseudo-elastic, and elastic-plastic constitutive representations of bulk atherosclerotic tissue...
May 9, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28487368/matrix-gla-protein-deficiency-impairs-nasal-septum-growth-causing-midface-hypoplasia
#16
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 the current 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-CT images revealed a severe midface hypoplasia in Mgp-/- mice...
May 9, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28486967/pseudoxanthoma-elasticum
#17
REVIEW
Dominique P Germain
Pseudoxanthoma elasticum (PXE) is a genetic metabolic disease with autosomal recessive inheritance caused by mutations in the ABCC6 gene. The lack of functional ABCC6 protein leads to ectopic mineralization that is most apparent in the elastic tissues of the skin, eyes and blood vessels. The clinical prevalence of PXE has been estimated at between 1 per 100,000 and 1 per 25,000, with slight female predominance. The first clinical sign of PXE is almost always small yellow papules on the nape and sides of the neck and in flexural areas...
May 10, 2017: Orphanet Journal of Rare Diseases
https://www.readbyqxmd.com/read/28483812/coronary-plaque-characterization-in-psoriasis-reveals-high-risk-features-which-improve-following-treatment-in-a-prospective-observational-study
#18
Joseph B Lerman, Aditya A Joshi, Abhishek Chaturvedi, Tsion M Aberra, Amit K Dey, Justin A Rodante, Taufiq Salahuddin, Jonathan H Chung, Anshuma Rana, Heather L Teague, Jashin J Wu, Martin P Playford, Benjamin N Lockshin, Marcus Y Chen, Veit Sandfort, David A Bluemke, Nehal N Mehta
Background -Psoriasis, a chronic inflammatory disease associated with an accelerated risk of MI, provides an ideal human model to study inflammatory atherogenesis in vivo We hypothesized that the increased cardiovascular risk observed in psoriasis would be partially attributable to an elevated subclinical coronary artery disease (CAD) burden composed of non-calcified plaques with high-risk features. However, inadequate efforts have been made to directly measure CAD in this vulnerable population. As such, we sought to compare total (TB) and non-calcified (NCB) coronary plaque burden, and high-risk plaque (HRP) prevalence, between psoriasis patients (n=105), hyperlipidemic patients eligible for statin therapy under NCEP-ATP III guidelines (n=100) who were ~10 years older, and non-psoriasis healthy volunteers (HV) (n=25)...
May 8, 2017: Circulation
https://www.readbyqxmd.com/read/28483776/calcification-and-oxidative-modifications-are-associated-with-progressive-bioprosthetic-heart-valve-dysfunction
#19
Suengwon Lee, Robert J Levy, Abigail J Christian, Stanley L Hazen, Nathan E Frick, Eric K Lai, Juan B Grau, Joseph E Bavaria, Giovanni Ferrari
BACKGROUND: Bioprosthetic heart valves (BHVs), fabricated from glutaraldehyde-pretreated bovine pericardium or porcine aortic valves, are widely used for the surgical or interventional treatment of heart valve disease. Reoperation becomes increasingly necessary over time because of BHV dysfunction. METHODS AND RESULTS: Forty-seven explanted BHV aortic valve replacements were retrieved at reoperation for clinically severe BHV dysfunction over the period 2010-2016...
May 8, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28482911/rapid-development-of-metastatic-pulmonary-calcifications-in-primary-hyperparathyroidism-a-case-report-and-literature-review
#20
Hui-Ming Sun, Fei Chen, Hong-Lin Yin, Xiao-Yong Xu, Hong-Bing Liu, Bei-Lei Zhao
BACKGROUND: Metastatic pulmonary calcification (MPC) is rarely reported in primary hyperparathyroidism, especially MPC develops quickly. We report such a case here with a literature review. CASE PRESENTATION: A 41-year-old woman presented with cough and dyspnea. Data from clinical, radiological, pathological, technetium ((99m)Tc)-methylene diphosphonate (MDP) bone scintillation imaging, and (99m)Tc-methoxy isobutyl isonitrile (MIBI) thyroid imaging were studied...
May 8, 2017: Diagnostic Pathology
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