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https://www.readbyqxmd.com/read/28107902/electrolyzing-synthesis-of-boron-doped-graphene-quantum-dots-for-fluorescence-determination-of-fe-3-ions-in-water-samples
#1
Li Chen, Chuanli Wu, Pan Du, Xiaowei Feng, Ping Wu, Chenxin Cai
This work reports a facile electrolyzing method to synthesize boron-doped graphene quantum dots (BGQDs) and uses the BGQDs as a fluorescent probe to determine Fe(3+) ion levels in water samples. The BGQDs were produced by oxidizing graphite in an aqueous borax solution at pH 7; then, the borate solution was filtered with BGQDs, and the borate was dialyzed from the filtrate, leaving a solution of BGQDs in water. The amount of the B in the BGQDs can be adjusted by changing the concentration of borax used for the electrolyte...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28101208/effect-of-bovine-dialyzable-leukocyte-extract-on-induction-of-cell-differentiation-and-death-in-k562-human-chronic-myelogenous-leukemia-cells
#2
Crystel A Sierra-Rivera, Moisés A Franco-Molina, Edgar Mendoza-Gamboa, Pablo Zapata-Benavides, Jesús Santaolalla-Tapia, Erika E Coronado-Cerda, Reyes S Tamez-Guerra, Cristina Rodríguez-Padilla
Differentiation induction therapy is an attractive approach in leukemia treatment due to the fact that in blast crisis stage, leukemic cells lose their differentiation capacity. Therefore, it has been proposed as a therapeutic strategy to induce terminal differentiation of leukemic blast cells into a specific lineage, leading to prevention of high proliferation rates. The aim of the present study was to demonstrate the potential of cell differentiation and death induced by bovine dialyzable leukocyte extract (bDLE) in the K562 cell line...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28077811/nutrition-status-predicts-severity-of-vascular-calcification-in-non-dialyzed-chronic-kidney-disease
#3
Kazuhiro Harada, Susumu Suzuki, Hideki Ishii, Kenshi Hirayama, Toshijiro Aoki, Yohei Shibata, Yosuke Negishi, Takuya Sumi, Kazuhiro Kawashima, Ayako Kunimura, Yosuke Tatami, Toshiki Kawamiya, Dai Yamamoto, Ryota Morimoto, Yoshinari Yasuda, Toyoaki Murohara
BACKGROUND: Vascular calcification is a major complication in chronic kidney disease (CKD) that increases the risk of adverse clinical outcomes. Geriatric nutritional risk index (GNRI) is a simple nutritional assessment tool that predicts poor prognosis in elderly subjects. The purpose of the present study was to evaluate the correlation between GNRI and severity of vascular calcification in non-dialyzed CKD patients.Methods and Results:We enrolled 323 asymptomatic CKD patients. To evaluate abdominal aortic calcification (AAC), we used aortic calcification index (ACI) determined on non-contrast computed tomography...
January 12, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28066932/reuse-and-biocompatibility-of-hemodialysis-membranes-clinically-relevant
#4
Ashish Upadhyay, Bertrand L Jaber
The practice of reprocessing dialyzers for reuse, once predominant in the United States, has been steadily declining over the last 20 years. The professed roles of reuse in improving dialyzer membrane biocompatibility and lowering the risk of first-use syndrome have lost relevance with the advent of biocompatible dialyzer membranes and favorable sterilization techniques. The potential for cost-savings from reuse is also called into question by the easy availability of comparatively cheaper dialyzers and rising regulatory demands and operational cost of reprocessing systems...
January 8, 2017: Seminars in Dialysis
https://www.readbyqxmd.com/read/28063734/safety-of-intravenous-iron-in-hemodialysis-longer-term-comparisons-of-iron-sucrose-versus-sodium-ferric-gluconate-complex
#5
Wolfgang C Winkelmayer, Benjamin A Goldstein, Aya A Mitani, Victoria Y Ding, Medha Airy, Sreedhar Mandayam, Tara I Chang, M Alan Brookhart, Steven Fishbane
BACKGROUND: Controversy exists about any differences in longer-term safety across different intravenous iron formulations routinely used in hemodialysis (HD) patients. We exploited a natural experiment to compare outcomes of patients initiating HD therapy in facilities that predominantly (in ≥90% of their patients) used iron sucrose versus sodium ferric gluconate complex. STUDY DESIGN: Retrospective cohort study of incident HD patients. SETTING & PARTICIPANTS: Using the US Renal Data System, we hard-matched on geographic region and center characteristics HD facilities predominantly using ferric gluconate with similar ones using iron sucrose...
January 4, 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/28063222/astrocytic-ip3-rs-contribution-to-ca-2-signalling-and-hippocampal-ltp
#6
Mark William Sherwood, Misa Arizono, Chihiro Hisatsune, Hiroko Bannai, Etsuko Ebisui, John Lawrence Sherwood, Aude Panatier, Stéphane Henri Richard Oliet, Katsuhiko Mikoshiba
Astrocytes regulate hippocampal synaptic plasticity by the Ca(2+) dependent release of the N-methyl d-aspartate receptor (NMDAR) co-agonist d-serine. Previous evidence indicated that d-serine release would be regulated by the intracellular Ca(2+) release channel IP3 receptor (IP3 R), however, genetic deletion of IP3 R2, the putative astrocytic IP3 R subtype, had no impact on synaptic plasticity or transmission. Although IP3 R2 is widely believed to be the only functional IP3 R in astrocytes, three IP3 R subtypes (1, 2, and 3) have been identified in vertebrates...
January 7, 2017: Glia
https://www.readbyqxmd.com/read/28062681/dialyzer-based-cell-salvage-system-a-superior-alternative-to-conventional-cell-salvage-in-off-pump-coronary-artery-bypass-grafting
#7
Amber Malhotra, Pankaj Garg, Arvind Kumar Bishnoi, Pranav Sharma, Vivek Wadhawa, Komal Shah, Sanjay Patel, Umesh Kumar Ahirwar, Dayesh Rodricks, Himani Pandya
OBJECTIVES: Our goal was to test the hypothesis that the use of a dialyzer-based cell salvage system during off-pump coronary artery bypass grafting (OPCABG) reduces requirements for homologous blood transfusions (HBT) and improves postoperative haemtochemical parameters. METHODS: Data were prospectively collected for 222 patients who had OPCABG using 3 different cell salvage techniques: (1) dialyzer-based cell salvage (DBCS) (n = 75), (2) conventional cell salvage (CCS) (n = 73) and (3) without cell salvage (WCS) (n = 74)...
January 6, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28044236/vascular-adhesion-protein-1-in-hemodialysis-and-hemodiafiltration-patients-effect-of-single-hemodialysis-session-on-its-level-in-regard-to-type-of-anticoagulant
#8
Jolanta Malyszko, Ewa Koc-Zorawska, Piotr Kozminski, Jacek S Malyszko
PURPOSE: Traditional anticoagulants used in intermittent hemodialysis (HD) are unfractionated heparin (UFH) and increasingly low molecular weight heparins (LMWHs). Repeated and prolonged exposure to UFH and/or LMWHs may further disturb hemostasis in uremic patients. Vascular adhesion protein-1 (VAP-1) is secreted by vascular smooth muscle cells, adipocytes and endothelial cells with functional monoamine oxidase activity and is elevated in atherosclerosis, diabetes mellitus and obesity...
January 2, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28043508/proteome-scale-mdr-tb-antibody-responses-for-identification-of-putative-biomarkers-for-the-diagnosis-of-drug-resistant-mycobacterium-tuberculosis
#9
Shamsi Yari, Alireza Hadizadeh Tasbiti, Mostafa Ghanei, Seyed Davar Siadat, Fatemeh Yari, A Bahrmand
OBJECTIVE: Multidrug-resistant tuberculosis (MDR-TB) is caused by Mycobacterium tuberculosis strains that do not respond to isoniazid and rifampicin, the two most effective first-line anti-TB drugs. Here, we designed and produced antibodies based on biomarkers that exist only in MDR-TB. METHODS: Bacilli were cultured for 4weeks at 37°C, and protein extraction was performed by sequential extraction. Bacterial cells were sonicated, centrifuged at 5000rpm for 45min, and the supernatant was collected and subjected to multiple rounds of treatment to prior to protein isolation...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28012693/tumoral-calcinosis-of-the-cervical-spine-in-a-dialysis-patient-case-report-and-review-of-the-literature
#10
Krzysztof Zapałowicz, Bartłomiej Stasiów, Monika Ciupińska-Kajor, Wojciech Piwowarski
The authors present a case of tumoral calcinosis (TC) in a patient with chronic renal insufficiency. The clinical course, imaging features and microscopic findings are detailed. A 60-year-old woman with a 4-year history of hemodialysis presented with a painful mass in the right posterior cervical triangle. The neuroimaging revealed polycystic mass bulging from the C3-C5 facet joints and lamina on the right. The majority of cystic mass was excised and microscopic features of the specimen were consistent with TC...
December 14, 2016: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/27991478/hemodialysis-delivery-dialysis-dose-achievement-and-vascular-access-types-in-hemodialysis-patients-from-the-gulf-cooperation-council-countries-enrolled-in-the-dialysis-outcomes-and-practice-patterns-study-phase-5-2012-2015
#11
Anas AlYousef, Sumaya AlGhareeb, Jamal Al Wakeel, Saeed M G Al-Ghamdi, Brian A Bieber, Mohamad Hassan, Yacoub Al Maimani, Naser Alkandari, Haroun Z Ahmed, Ashraf Fawzy, Ronald L Pisoni
The prospective observational Dialysis Outcomes and Practice Patterns Study (DOPPS) was initiated in late 2012 in national samples of hemodialysis (HD) units (n = 41 study sites) in all six Gulf Cooperation Council (GCC) countries (Bahrain, Kuwait, Oman, Qatar, Saudi Arabia, and the United Arab Emirates). For many years, guidelines have recommended single pool Kt/V ≥1.2 as the minimum adequate dose for chronic HD patients. Here, we report initial DOPPS results regarding HD practices related to dialysis dose achievement in the GCC...
November 2016: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/27988515/cognitive-impairment-and-structural-neuroimaging-abnormalities-among-patients-with-chronic-kidney-disease
#12
Hai-Chen Pi, Yu-Feng Xu, Rong Xu, Zhi-Kai Yang, Zhen Qu, Yu-Qing Chen, Gui-Ling Liu, Jie Dong
BACKGROUND/AIMS: Cognitive impairment and abnormal structural neuroimaging is common in chronic kidney disease patients. We aimed to explore its association with dialysis modality and the relationship between cognitive impairment and abnormal structural neuroimaging. METHODS: Sixty peritoneal dialysis patients and 30 hemodialysis and 30 non-dialyzed stage 3-5 chronic kidney disease patients without history of stroke were enrolled for the study. Participants were matched for age, gender, education, diabetes status, and dialysis duration (if appropriate)...
2016: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/27974935/the-time-for-surgery-of-peritonitis-associated-with-peritoneal-dialysis
#13
Mihalache O, Bugă C, Doran H, Catrina E, Bobircă F, Andreescu A, Mustățea P, Pătrașcu T
Peritonitis is the main complication of peritoneal dialysis (PD) and also an important factor for raising the cost of the method to the level of hemodialysis. Associated with PD, peritonitis is responsible for the increase of morbidity and mortality of the procedure and, at the same time, the main cause of the technique failure. Severe and prolonged peritonitis or repeated episodes of peritonitis lead to ultrafiltration failure. Peritonitis treatment should aim for a rapid remission of inflammation in order to preserve the peritoneal membrane functional integrity...
July 2016: Journal of Medicine and Life
https://www.readbyqxmd.com/read/27957749/dynamics-of-volume-averaged-intracellular-ca-2-in-a-rat-cns-nerve-terminal-during-single-and-repetitive-voltage-clamp-depolarizations
#14
Kun-Han Lin, Holger Taschenberger, Erwin Neher
Many aspects of short-term synaptic plasticity (STP) are controlled by relatively slow changes in the presynaptic intracellular concentration of free calcium ions ([Ca(2+) ]i ) that occur in the time range of a few milliseconds to several seconds. In nerve terminals, [Ca(2+) ]i equilibrates diffusionally during such slow changes, such that the globally measured, residual [Ca(2+) ]i that persists after the collapse of local domains is often the appropriate parameter governing STP. Here, we study activity-dependent dynamic changes in global [Ca(2+) ]i at the rat calyx of Held nerve terminal in acute brainstem slices using patch-clamp and microfluorimetry...
December 13, 2016: Journal of Physiology
https://www.readbyqxmd.com/read/27957414/current-characteristics-of-dialysis-therapy-in-korea-2015-registry-data-focusing-on-elderly-patients
#15
REVIEW
Dong-Chan Jin, Sung-Ro Yun, Seoung Woo Lee, Sang-Woong Han, Won Kim, Jongha Park
Because of increases in the elderly population and diabetic patients, the proportion of elderly among dialysis patients has rapidly increased during the last decades. The mortality and morbidity of these elderly dialysis patients are obviously much higher than those of young patients, but large analytic studies about elderly dialysis patients' characteristics have rarely been published. The registry committee of the Korean Society of Nephrology has collected data about dialysis therapy in Korea through an Internet online registry program and analyzed the characteristics...
December 2016: Kidney Research and Clinical Practice
https://www.readbyqxmd.com/read/27951575/clearance-gap-does-it-really-matter-for-the-evaluation-of-vascular-access-function
#16
Jun-Ichi Ono, Yujiro Shiraga, Fumika Yoshikawa, Yoshisuke Haruna, Tamaki Sasaki, Seiichi Mochizuki
BACKGROUNDS: Vascular access (VA) stenosis increases the risk of VA obstruction due to the gradual progress of intimal thickening. Therefore, we should try to detect VA stenosis early. However, we do not have a cutoff for when a difference between prescribed Kt/V and delivered Kt/V reflects a clinical issue. Thus, we have devised a new index, the 'clearance gap' (CL-Gap), which quantifies the difference between the effective clearance (eCL) of a hemodialysis (HD) patient and the theoretical clearance (tCL) of a dialyzer to detect a decrease in dialysis efficiency due to VA dysfunction...
2017: Contributions to Nephrology
https://www.readbyqxmd.com/read/27951573/a-new-poly-methyl-methacrylate-membrane-dialyzer-nf-with-adsorptive-and-antithrombotic-properties
#17
Wataru Oshihara, Hiroaki Fujieda, Yoshiyuki Ueno
BACKGROUND: Poly(methyl methacrylate) (PMMA) membranes adsorb several kinds of proteins and can remove high-molecular-weight proteins, including uremic toxins, which are not removed efficiently by hemodialysis or hemodiafiltration. However, the antithrombogenicity of PMMA membranes is insufficient due to their adsorptive properties. SUMMARY: Coagulation during hemodialysis occurs because proteins that are adsorbed to the PMMA membrane undergo structural changes and are recognized by platelets, which are then activated by adhesion to the membrane surface...
2017: Contributions to Nephrology
https://www.readbyqxmd.com/read/27951572/a-new-polysulfone-membrane-dialyzer-nv-with-low-fouling-and-antithrombotic-properties
#18
Wataru Oshihara, Yoshiyuki Ueno, Hiroaki Fujieda
BACKGROUND: The biggest problem in routine hemodialysis therapy is possibly the blood pressure fall experienced by patients during dialysis. In contrast, in medium- and long-term hemodialysis therapy, the main problem might be deterioration of arteriosclerosis because of medial calcification associated with dialysis vintage. Both problems are caused by an autonomic imbalance or structural change in the blood vessels. Inflammation due to extracorporeal blood circulation is another possible cause...
2017: Contributions to Nephrology
https://www.readbyqxmd.com/read/27951571/fundamental-characteristics-of-the-newly-developed-ata%C3%A2-membrane-dialyzer
#19
Takashi Sunohara, Toshiaki Masuda
BACKGROUND: Dialysis membranes are often made from synthetic polymers, such as polysulfone. However, membranes made from cellulose triacetate have superior biocompatibility and have been used since the 1980s. On-line hemodiafiltration treatment accompanied by massive fluid replacement is increasingly being used in Europe and Japan, but cellulose triacetate is not suitable for this treatment. SUMMARY: Our newly developed asymmetric triacetate membrane, the ATA™ membrane, substantially improved the filtration properties and blood compatibility because of the asymmetric structure and smooth surface of this cellulose acetate membrane...
2017: Contributions to Nephrology
https://www.readbyqxmd.com/read/27951570/biocompatibility-of-hemodiafilters
#20
Tadashi Tomo
BACKGROUND: Biocompatibility and the efficiency of solute removal are important considerations in blood purification therapy. Improvement of biocompatibility is expected to lead to the prevention of dialysis-related complications (e.g. amyloidosis, arteriosclerosis, and malnutrition) and to the delay of disease progression by alleviating microinflammation. SUMMARY: The biocompatibility of dialyzers is greatly influenced by the interaction between blood and the treatment materials, in which the chemical and physical characteristics of membrane materials play important roles...
2017: Contributions to Nephrology
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