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https://www.readbyqxmd.com/read/29099056/ammonia-reduces-intracellular-asymmetric-dimethylarginine-in-cultured-astrocytes-stimulating-its-y%C3%A2-%C2%BAlat2-carrier-mediated-loss
#1
Krzysztof Milewski, Małgorzata Bogacińska-Karaś, Inez Fręśko, Wojciech Hilgier, Radosław Jaźwiec, Jan Albrecht, Magdalena Zielińska
Previously we had shown that ammonia stimulates nitric oxide (NO) synthesis in astrocytes by increasing the uptake of the precursor amino acid, arginine via the heteromeric arginine/glutamine transporter y⁺LAT2. Ammonia also increases the concentration in the brain of the endogenous inhibitor of nitric oxide synthases (NOS), asymmetric dimethylarginine (ADMA), but distribution of ADMA surplus between the intraastrocytic and extracellular compartments of the brain has not been studied. Here we tested the hypothesis that ammonia modulates the distribution of ADMA and its analog symmetric dimethylarginine (SDMA) between the two compartments of the brain by competition with arginine for the y⁺LAT2 transporter...
November 2, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29073303/significant-differences-in-parameters-of-glucose-metabolism-in-children-of-hypertensive-and-normotensive-parents
#2
Anna Gryko, Barbara Głowińska-Olszewska, Katarzyna Płudowska, W Henry Smithson, Anna Owłasiuk, Beata Żelazowska-Rutkowska, Katarzyna Wojtkielewicz, Robert Milewski, Sławomir Chlabicz
INTRODUCTION: In the recent years, alterations in the carbohydrate metabolism, including insulin resistance, are considered as risk factors in the development of hypertension and its complications in young age. Hypertension is associated with significant cardiovascular morbidity and mortality. The onset of pathology responsible for the development of hypertension, as well as levels of biomarkers specific for early stages of atherosclerosis are poorly understood. AIM: To compare a group of children whose parents have a history of hypertension (study group) with a group of children with normotensive parents (reference group), with consideration of typical risk factors for atherosclerosis, parameters of lipid and carbohydrate metabolism, anthropometric data and new biomarkers of early cardiovascular disease (hsCRP, adiponectin, sICAM-1)...
2017: Pediatric Endocrinology, Diabetes, and Metabolism
https://www.readbyqxmd.com/read/29030347/extracellular-matrix-proteomics-reveals-interplay-of-aggrecan-and-aggrecanases-in-vascular-remodeling-of-stented-coronary-arteries
#3
Gonca Suna, Wojciech Wojakowski, Marc Lynch, Javier Barallobre-Barreiro, Xiaoke Yin, Ursula Mayr, Ferheen Baig, Ruifang Lu, Marika Fava, Robert Hayward, Chris Molenaar, Stephen J White, Tomasz Roleder, Krzysztof Milewski, Pawel Gasior, Piotr P Buszman, Pawel E Buszman, Marjan Jahangiri, Cathy Shanahan, Jonathan M Hill, Manuel Mayr
Background -Extracellular matrix (ECM) remodeling contributes to in-stent restenosis and thrombosis. Despite its important clinical implications little is known about ECM changes post-stent implantation. Methods -Bare-metal (BMS) and drug-eluting stents (DES) were implanted in pig coronary arteries with an overstretch under optical coherence tomography guidance. Stented segments were harvested 1, 3, 7, 14 and 28 days post-stenting for proteomics analysis of the media and neointima. Results -A total of 151 ECM and ECM-associated proteins were identified by mass spectrometry...
October 13, 2017: Circulation
https://www.readbyqxmd.com/read/28993454/dynamics-of-cytoplasm-and-cleavage-divisions-correlates-with-preimplantation-embryo-development
#4
Robert Milewski, Marcin Szpila, Anna Maria Ajduk
In vitro fertilization has become increasingly popular as an infertility treatment. In order to improve efficiency of this procedure, there is a strong need for a refinement of existing embryo assessment methods and development of novel, robust and non-invasive selection protocols. Studies conducted on animal models can be extremely helpful here, as they allow for more extensive research on the potential biomarkers of embryo quality. In the present paper we subjected mouse embryos to non-invasive time-lapse imaging and combine the Particle Image Velocimetry analysis of cytoplasmic dynamics in freshly fertilized oocytes with the morphokinetic analysis of recordings covering 5 days of preimplantation development...
October 9, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28980380/safety-and-feasibility-of-same-day-early-discharge-after-endovascular-revascularization-of-lower-extremities-in-elderly-senior-er-registry
#5
Adam Janas, Krzysztof Milewski, Piotr P Buszman, Ksenia Janas, Aleksandra Blachut, Maciej Pruski, Szymon Wiernek, Aleksander Zurakowski, Pawel E Buszman, Stefan R Kiesz
OBJECTIVE: The aim of the study was to assess safety and feasibility of one-day early discharge (ODD) after endovascular revascularization (ER) of lower extremities in elderly. BACKGROUND: Safety and feasibility of ODD after ER have never been investigated in the elderly, despite the PAD rate has been rising in well-developed countries as their populations are getting older. METHODS: The consecutive data of 477 patients after ER who were intended to ODD were reviewed...
October 5, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28944351/the-effect-of-nonsurgical-periodontal-therapy-on-the-level-of-human-neutrophil-peptides-1-3-in-patients-with-aggressive-periodontitis
#6
Ewa Dolińska, Anna Skurska, Violetta Dymicka-Piekarska, Robert Milewski, Jan Pietruski, Małgorzata Pietruska, Anton Sculean
PURPOSE: To assess the presence of HNP1-3 in the gingival crevicular fluid (GCF) of patients suffering from aggressive periodontitis before and after nonsurgical periodontal therapy. MATERIALS AND METHODS: Twenty patients, each with generalised aggressive periodontitis (GAP) were included in the study. After periodontal examination, one site with a probing depth (PD) ≥ 4 mm was selected. Patients received nonsurgical treatment (scaling and root planing [SRP]) with additional administration of systemic antibiotic therapy (amoxicillin 375 mg three times daily + metronidazole 250 mg three times daily for 7 days)...
September 21, 2017: Oral Health & Preventive Dentistry
https://www.readbyqxmd.com/read/28940383/immunoproteasome-in-the-blood-plasma-of-children-with-acute-appendicitis-and-its-correlation-with-proteasome-and-uchl1-measured-by-spr-imaging-biosensors
#7
E Matuszczak, A Sankiewicz, W Debek, E Gorodkiewicz, R Milewski, A Hermanowicz
The aim of this study was to determinate the immunoproteasome concentration in the blood plasma of children with appendicitis, and its correlation with circulating proteasome and ubiquitin carboxyl-terminal hydrolase L1 (UCHL1). Twenty-seven children with acute appendicitis, managed at the Paediatric Surgery Department, were included randomly into the study (age 2 years 9 months up to 14 years, mean age 9·5 ± 1 years). There were 10 girls and 17 boys; 18 healthy, age-matched subjects, admitted for planned surgeries served as controls...
September 23, 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28895402/acetate-induced-disassembly-of-spherical-iron-oxide-nanoparticle-clusters-into-monodispersed-core-shell-structures-upon-nanoemulsion-fusion
#8
Ahmet Kertmen, Pau Torruella, Emerson Coy, Luis Yate, Grzegorz Nowaczyk, Jacek Gapiński, Carmen Vogt, Muhammet Toprak, Sonia Estradé, Francesca Peiró, Sławomir Milewski, Stefan Jurga, Ryszard Andruszkiewicz
It has been long known that the physical encapsulation of oleic acid-capped iron oxide nanoparticles (OA-IONPs) with the cetyltrimethylammonium (CTA(+)) surfactant induces the formation of spherical iron oxide nanoparticle clusters (IONPCs). However, the behavior and functional properties of IONPCs in chemical reactions have been largely neglected and are still not well-understood. Herein, we report an unconventional ligand-exchange function of IONPCs activated when dispersed in an ethyl acetate/acetate buffer system...
September 22, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28819961/-bioresorbable-scaffolds-in-the-treatment-of-coronary-artery-disease-expert-consensus-statement-of-the-association-of-cardiovascular-interventions-of-the-polish-cardiac-society-acvi-pcs
#9
Krzysztof Reczuch, Krzysztof Milewski, Wojciech Wąsek, Łukasz Rzeszutko, Wojciech Wojakowski, Michał Hawranek, Adrian Włodarczak, Tomasz Pawłowski, Janusz Kochman, Sławomir Dobrzycki, Marek Grygier, Andrzej Ochała, Jarosław Wójcik, Maciej Lesiak, Dariusz Dudek, Jacek Legutko
Bioresorbable scaffold coated with antimitotic drug is the latest development in the coronary stents technology. The concept of temporary scaffolding and natural vessel healing after angioplasty is a very attractive alternative to conventional metal stents. The results of the first observational studies have confirmed their ultimate biodegradation. Newest results of randomised trials and registries in broader clinical and anatomical indications also revealed the limitations of the first generation of scaffolds...
2017: Kardiologia Polska
https://www.readbyqxmd.com/read/28802510/aortic-dilatation-associated-with-bicuspid-aortic-valve-relation-to-sex-hemodynamics-and-valve-morphology-the-national-heart-lung-and-blood-institute-sponsored-national-registry-of-genetically-triggered-thoracic-aortic-aneurysms-and-cardiovascular-conditions
#10
MULTICENTER STUDY
Mary J Roman, Norma L Pugh, Richard B Devereux, Kim A Eagle, Kathryn Holmes, Scott A LeMaire, Rita K Milewski, Shaine A Morris, Siddharth K Prakash, Reed E Pyeritz, William J Ravekes, Ralph V Shohet, Howard K Song, Federico M Asch
This study analyzed the impact of sex, hemodynamic profile, and valve fusion pattern on aortopathy associated with bicuspid aortic valve (BAV). The National Heart Lung and Blood Institute-sponsored National Registry of Genetically Triggered Thoracic Aortic Aneurysms and Cardiovascular Conditions (GenTAC) provided comprehensive information on a large population of well-characterized patients with BAV. Of 969 enrolled patients with BAV, 551 (57%, 77% male) had already undergone valvular and/or aortic surgery...
October 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28795434/concomitant-antegrade-stent-grafting-of-the-descending-thoracic-aorta-during-transverse-hemiarch-reconstruction-for-acute-debakey-i-aortic-dissection-repair-improves-aortic-remodeling
#11
Ibrahim Sultan, Tyler J Wallen, Andreas Habertheuer, Mary Siki, George J Arnaoutakis, Joseph Bavaria, Wilson Y Szeto, Rita Milewski, Prashanth Vallabhajosyula
BACKGROUND AND AIM: Concomitant endovascular stent grafting of the descending thoracic aorta during open repair for acute DeBakey I aortic dissection can be performed in patients with extensive dissection and malperfusion. We analyzed the effects of this strategy on distal aortic remodeling. METHODS: From 2006-2014, acute DeBakey I dissection patients without primary aortic arch tear undergoing open distal hemiarch reconstruction (Standard group) versus those undergoing hemiarch with descending thoracic aorta (DTA) thoracic endovascular aortic repair (TEVAR group) were retrospectively reviewed...
August 9, 2017: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/28773117/zinc-sorption-on-modified-waste-poly-methyl-methacrylate
#12
Agata Jakóbik-Kolon, Andrzej Milewski, Dominik Zdybał, Krzysztof Mitko, Ewa Laskowska, Anna Mielańczyk, Joanna Bok-Badura
The new one-pot hydrolysis-crosslinking reaction was used to synthesize a new, waste poly(methyl methacrylate) (PMMA)-based material for zinc(II) ions removal. The alkaline hydrolysis of PMMA in diethylene glycol diethyl ether was used to obtain polymer matrix and it was then crosslinked with Ca and Mg ions to obtain the sorbent. As a result, the macroporous materials were obtained with a yield of 87% when waste PMMA was used, and about 95% when the commercial PMMAs were used. The degree of hydrolysis was similar, from 32% to 35%...
July 6, 2017: Materials
https://www.readbyqxmd.com/read/28760949/homeostatic-enhancement-of-sensory-transduction
#13
Andrew R Milewski, Dáibhid Ó Maoiléidigh, Joshua D Salvi, A J Hudspeth
Our sense of hearing boasts exquisite sensitivity, precise frequency discrimination, and a broad dynamic range. Experiments and modeling imply, however, that the auditory system achieves this performance for only a narrow range of parameter values. Small changes in these values could compromise hair cells' ability to detect stimuli. We propose that, rather than exerting tight control over parameters, the auditory system uses a homeostatic mechanism that increases the robustness of its operation to variation in parameter values...
August 15, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28680175/outcome-after-discontinuation-of-proton-pump-inhibitors-at-a-residential-care-site-quality-improvement-project
#14
Candy Lee, Anita Lo, Kiran Ubhi, Michael Milewski
BACKGROUND: Increased prescribing of proton pump inhibitors (PPIs) in the past few decades can be attributed mainly to long-term use of this type of therapy. Recent evidence indicates signals of harm associated with long-term use of PPIs, such as increased risk of Clostridium difficile infection, recurrence of C. difficile infection, and fracture. A few studies have assessed the effectiveness of step-down management of patients receiving long-term PPI therapy in ambulatory care settings...
May 2017: Canadian Journal of Hospital Pharmacy
https://www.readbyqxmd.com/read/28662068/effects-of-anabolic-and-catabolic-nutrients-on-woody-plant-encroachment-after-long-term-experimental-fertilization-in-a-south-african-savanna
#15
Anthony J Mills, Antoni V Milewski, Dirk Snyman, Jorrie J Jordaan
The causes of the worldwide problem of encroachment of woody plants into grassy vegetation are elusive. The effects of soil nutrients on competition between herbaceous and woody plants in various landscapes are particularly poorly understood. A long-term experiment of 60 plots in a South African savanna, comprising annual applications of ammonium sulphate (146-1166 kg ha-1 yr-1) and superphosphate (233-466 kg ha-1 yr-1) over three decades, and subsequent passive protection over another three decades, during which indigenous trees encroached on different plots to extremely variable degrees, provided an opportunity to investigate relationships between soil properties and woody encroachment...
2017: PloS One
https://www.readbyqxmd.com/read/28648536/outcomes-of-elective-aortic-hemiarch-reconstruction-for-aneurysmal-disease-in-the-elderly
#16
COMPARATIVE STUDY
Arman Kilic, George J Arnaoutakis, Joseph E Bavaria, Ibrahim Sultan, Nimesh D Desai, Prashanth Vallabhajosyula, Matthew L Williams, Rita K Milewski, Wilson Y Szeto
BACKGROUND: This study evaluated outcomes of elective aortic hemiarch reconstruction for aneurysmal disease in the elderly. METHODS: Patients undergoing elective aortic hemiarch reconstruction for aneurysmal disease at a single institution between 2009 and 2014 were retrospectively reviewed. Patients were stratified into nonelderly (aged less than 75 years) versus elderly (aged 75 years or more). Outcomes included operative mortality and morbidity. RESULTS: In all, 629 patients (95 elderly; 15%) were included...
November 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28628891/synthesis-and-antimicrobial-activity-of-6-sulfo-6-deoxy-d-glucosamine-and-its-derivatives
#17
Kornelia Skarbek, Iwona Gabriel, Piotr Szweda, Marek Wojciechowski, Muna A Khan, Boris Görke, Sławomir Milewski, Maria J Milewska
6-Sulfo-6-deoxy-D-glucosamine (GlcN6S), 6-sulfo-6-deoxy-D-glucosaminitol (ADGS) and their N-acetyl and methyl ester derivatives have been synthesized and tested as inhibitors of enzymes catalyzing reactions of the UDP-GlcNAc pathway in bacteria and yeasts. GlcN6S and ADGS at micromolar concentrations inhibited glucosamine-6-phosphate (GlcN6P) synthase of microbial origin. The former was also inhibitory towards fungal GlcN6P N-acetyl transferase, but at millimolar concentrations. Both compounds and their N-acetyl derivatives exhibited antimicrobial in vitro activity, with MICs in the 0...
June 12, 2017: Carbohydrate Research
https://www.readbyqxmd.com/read/28612912/temporal-healing-patterns-and-coverage-dynamics-after-new-polish-transcatheter-pfo-occluder-implantation-in-a-swine
#18
Krzysztof Milewski, Roland Fiszer, Piotr Paweł Buszman, Przemysław Węglarz, Adam Janas, Agata Krauze, Michał Jelonek, Piotr Hirnle, Grzegorz Smolka, Robert Gil, Jacek Białkowski, Paweł Eugeniusz Buszman
BACKGROUND: Although currently used devices for interventional closure of patent foramen ovale (PFO) are widely used due to minimally invasive nature of this technique and high success rate, there is still a need to look for new materials and designs in order to improve the treatment outcomes. AIM: To evaluate safety, biocompatibility, temporal healing patterns and coverage dynamics of the new Polish PFO occluder (Balton, Warsaw, Poland) in a swine model - an observation that may assist decision with regard to its first-in-human use and duration of anticoagulation therapy...
June 14, 2017: Kardiologia Polska
https://www.readbyqxmd.com/read/28599977/fate-of-remnant-sinuses-of-valsalva-in-patients-with-bicuspid-and-trileaflet-valves-undergoing-aortic-valve-ascending-aorta-and-aortic-arch-replacement
#19
Rita Karianna Milewski, Andreas Habertheuer, Joseph E Bavaria, Mary Siki, Wilson Y Szeto, Eric Krause, Varun Korutla, Nimesh D Desai, Prashanth Vallabhajosyula
OBJECTIVE: In patients presenting with aortic valvulopathy with concomitant ascending aortic aneurysm, surgical management of the sinus of Valsalva segment remains undefined, especially for moderately dilated aortic roots. In patients with this pathology undergoing aortic valve replacement with supracoronary ascending aorta replacement, we assessed the fate of the remnant preserved sinus of Valsalva segment stratified by aortic valve morphology and pathology. METHODS: From 2002 to 2015, 428 patients underwent elective aortic valve replacement with supracoronary ascending aorta replacement...
August 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28530851/chondral-injuries-and-irreparable-meniscal-tears-among-adolescents-with-anterior-cruciate-ligament-or-meniscal-tears-are-more-common-in-patients-with-public-insurance
#20
Ariel A Williams, Nickolas S Mancini, Matthew J Solomito, Carl W Nissen, Matthew D Milewski
BACKGROUND: Access to health care services is a critical component of health care reform and may differ among patients with different types of insurance. Hypothesis/Purpose: The purpose was to compare adolescents with private and public insurance undergoing surgery for anterior cruciate ligament (ACL) and/or meniscal tears. We hypothesized that patients with public insurance would have a delayed presentation from the time of injury and therefore would have a higher incidence of chondral injuries and irreparable meniscal tears and lower preoperative International Knee Documentation Committee (IKDC) scores than patients with private insurance...
May 1, 2017: American Journal of Sports Medicine
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