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https://www.readbyqxmd.com/read/28445893/early-mortality-associated-with-inpatient-versus-outpatient-hemodialysis-initiation-in-a-large-cohort-of-us-veterans-with-incident-end-stage-renal-disease
#1
Faisal M Arif, Keiichi Sumida, Miklos Z Molnar, Praveen K Potukuchi, Jun Ling Lu, Fatima Hassan, Fridtjof Thomas, Omer A Siddiqui, Geeta G Gyamlani, Kamyar Kalantar-Zadeh, Csaba P Kovesdy
BACKGROUND: Mortality in the immediate post-hemodialysis transition period is extremely high. Many end-stage renal disease (ESRD) patients in the US start dialysis in an inpatient setting, but the characteristics of patients starting dialysis as inpatients, and the association of inpatient hemodialysis transition with mortality remain unclear. METHODS: We examined 48,261 US veterans who transitioned to hemodialysis between October 2007 and September 2011. Associations of inpatient hemodialysis starting with all-cause mortality were examined in Cox proportional hazard models, with adjustments for demographics, comorbidities, vascular access type, pre-dialysis nephrology care and medication use, and last pre-ESRD estimated glomerular filtration rate and hemoglobin...
April 27, 2017: Nephron
https://www.readbyqxmd.com/read/28445887/use-of-phosphorus-binders-among-non-dialysis-chronic-kidney-disease-patients-and-mortality-outcomes
#2
Simran K Bhandari, In-Lu A Liu, Dean A Kujubu, Trung Huynh, Hind Behayaa, Csaba P Kovesdy, Kamyar Kalantar-Zadeh, Steven J Jacobsen, John J Sim
BACKGROUND: Whether the benefits of phosphorus binders extend to those without end stage renal disease is uncertain. Among a large diverse non-dialysis chronic kidney disease (CKD) population with hyperphosphatemia, we sought to evaluate phosphorus binder use and compare mortality risk between patients prescribed and not prescribed binders. METHODS: A retrospective cohort study within an integrated health system (January 1, 1998 - December 31, 2012) among CKD patients (age ≥18) was performed...
April 27, 2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/28445881/absence-of-decline-of-kidney-function-in-human-immunodeficiency-virus-infected-patients-under-routine-clinical-management
#3
Julie Boucquemont, Sylvie Lawson-Ayayi, Claire Rigothier, Fabrice Bonnet, Cécile Proust-Lima, Didier Neau, Carine Greib, Ghada Miremont-Salamé, François Dabis, Michel Dupon, Frédéric-Antoine Dauchy
BACKGROUND: Since the introduction of antiretroviral therapy (ART), human immunodeficiency virus (HIV)-infected patients have a drastically improved prognosis but at the same time they are also more affected by non-HIV related complications, such as chronic kidney disease. The objective of our study was to investigate the effect of proteinuria and tenofovir (TDF)-containing ART regimens on the temporal evolution of estimated glomerular filtration rate (eGFR). METHODS: Between April 2008 and October 2012, we enrolled 395 patients with a complete renal evaluation among patients from the ANRS C03 Aquitaine cohort, a prospective hospital-based cohort of HIV-1-infected patients under routine clinical management in southwestern France...
April 26, 2017: Nephron
https://www.readbyqxmd.com/read/28445699/journey-of-cystatins-from-being-mere-thiol-protease-inhibitors-to-at-heart-of-many-pathological-conditions
#4
REVIEW
Anas Shamsi, Bilqees Bano
Cystatins are thiol proteinase inhibitors (TPI), present ubiquitously in animals, plants and micro-organisms. These are not merely inhibitors rather they are at heart of many pathological conditions ranging from diabetes to renal failure. These are essential for maintenance of protein balance of the cell; once this balance gets disturbed, it may lead to cell death. Thus, cystatins cannot be merely regarded as TPI's as these have been found to play a pivotal role in tumorigenesis and neurodegenerative diseases...
April 23, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28445642/the-predictive-power-of-clean-bed-filtration-theory-for-fecal-indicator-bacteria-removal-in-stormwater-biofilters
#5
Emily Parker, Megan A Rippy, Andrew Mehring, Brandon Winfrey, Richard F Ambrose, Lisa A Levin, Stanley B Grant
Green infrastructure (also referred to as low impact development, or LID) has the potential to transform urban stormwater runoff from an environmental threat to a valuable water resource. In this paper we focus on the removal of fecal indicator bacteria (FIB, a pollutant responsible for runoff-associated inland and coastal beach closures) in stormwater biofilters (a common type of green infrastructure). Drawing on a combination of previously published and new laboratory studies of FIB removal in biofilters, we find that 66% of the variance in FIB removal rates can be explained by clean bed filtration theory (CBFT, 31%), antecedent dry period (14%), study effect (8%), biofilter age (7%), and the presence or absence of shrubs (6%)...
April 26, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28445603/alternating-flow-filtration-as-an-alternative-to-internal-spin-filter-based-perfusion-process-impact-on-productivity-and-product-quality
#6
María Bosco, Cristian Paillet, Laura Mauro, Ignacio Amadeo, Eduardo Orti, Guillermina Forno
No abstract text is available yet for this article.
April 26, 2017: Biotechnology Progress
https://www.readbyqxmd.com/read/28445401/tradeoff-in-the-nephron-a-theory-to-explain-the-primacy-of-phosphate-in-the-pathogenesis-of-secondary-hyperparathyroidism
#7
Kenneth R Phelps
Chronic kidney disease (CKD) causes secondary hyperparathyroidism (SHPT). The cardinal features of SHPT are persistence of normocalcemia as CKD progresses and dependence of the parathyroid hormone concentration ([PTH]) on phosphate influx (IP). The tradeoff-in-the-nephron hypothesis integrates these features. It states that as the glomerular filtration rate (GFR) falls, the phosphate concentration ([P]CDN) rises in the cortical distal nephron, the calcium concentration ([Ca]CDN) in that segment falls, and [PTH] rises to maintain normal calcium reabsorption per volume of filtrate (TRCa/GFR)...
April 26, 2017: Nutrients
https://www.readbyqxmd.com/read/28445210/perceived-discrimination-and-longitudinal-change-in-kidney-function-among-urban-adults
#8
May A Beydoun, Angedith Poggi-Burke, Alan B Zonderman, Ola S Rostant, Michele K Evans, Deidra C Crews
OBJECTIVE: Perceived discrimination has been associated with psychosocial distress and adverse health outcomes. We examined associations of perceived discrimination measures with changes in kidney function in a prospective cohort study, the Healthy Aging in Neighborhoods of Diversity Across the LifeSpan. METHODS: Our study included 1,620 participants with preserved baseline kidney function (estimated glomerular filtration rate (eGFR) ≥60 ml/min/1.73m) (662 Whites and 958 African-Americans (AA), aged 30-64 years)...
April 26, 2017: Psychosomatic Medicine
https://www.readbyqxmd.com/read/28445085/regenerative-surgery-in-the-treatment-of-cosmetic-defect-following-nuss-procedure
#9
Flavio Facchini, Marco Ghionzoli, Alessandra Martin, Sara Tanini, Sara Ugolini, Roberto Lo Piccolo, Antonio Messineo
BACKGROUND: In the past decade, the minimally invasive repair of pectus excavatum (MIRPE) has become the treatment of choice for severe pectus excavatum (PE), proving acceptable to excellent cosmetic results. Recently, autologous fat grafting (FG) has been identified in aesthetic and reconstructive surgery to ideally handle volume and contour defects. We report our experience about FG in the treatment of residual minor defects after MIRPE and a proposal for a new indication of this largely adopted technique...
April 26, 2017: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/28444602/bioactive-guided-fractionation-of-diols-from-streptomyces-sp-msl
#10
Raja Hima Bindhu Madasu, Vijayalakshmi Muvva, Rajesh Kumar Munaganti, Kumar Reddy Dorigondla, Venkateswarlu Yenamandra
An actinomycete strain with a great potential to produce bioactive compounds isolated from a laterite soil was identified as Streptomyces sp. MSL based on 16S rDNA sequence analysis. Secondary metabolites produced by the strain in optimized nutrient broth were extracted and analyzed by chromatographic and spectroscopic techniques. Among the different fractions, four diols, viz., (1) (2R,3R)-2,3-Butanediol, (2) (2R,3S)-2,3-Butanediol, (3) 2,3-dimethyl-2,3-butanediol (Pinacol), and (4) (3R)-1,3-Butanediol exhibited good antimicrobial activity...
May 2017: 3 Biotech
https://www.readbyqxmd.com/read/28444577/comparison-of-clinical-serological-and-prognostic-differences-among-juvenile-adult-and-late-onset-lupus-nephritis-in-korean-patients
#11
Ji-Hyoun Kang, Dong-Jin Park, Kyung-Eun Lee, Ji Shin Lee, Yoo-Duk Choi, Shin-Seok Lee
We investigated whether lupus nephritis (LN) patients could be distinguished based on the time of disease onset and, if so, whether the groups differed in their clinical and laboratory features and long-term prognosis in ethnically homogeneous Korean patients. We enrolled 117 systemic lupus erythematosus patients with available clinical data at the time of renal biopsy of LN. Sociodemographic, clinical, and laboratory data and concomitant diseases were evaluated at the time of renal biopsy. We divided LN patients, according to age at LN diagnosis, into three groups: juvenile-onset LN (JLN, diagnosed at ≤18 years), adult-onset LN (ALN, diagnosed at 18-50 years), and late-onset LN (LLN, diagnosed at >50 years) and compared demographic, clinical, histological, and laboratory findings...
April 25, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28443950/chronic-kidney-disease-determinants-of-progression-and-cardiovascular-risk-progredir-cohort-study-design-and-methods
#12
Maria Alice Muniz Domingos, Alessandra Carvalho Goulart, Paulo Andrade Lotufo, Isabela Judith Martins Benseñor, Silvia Maria de Oliveira Titan
CONTEXT AND OBJECTIVE: Chronic kidney disease (CKD) has become an important public health issue. The socioeconomic burden of renal replacement therapy (RRT) is very high, as is CKD-related cardiovascular mortality and morbidity. Preventive and therapeutic measures only have modest impact and more research is needed. Few cohort studies have been conducted on populations with CKD. Our aim was to establish a cohort that would include more advanced forms of CKD (stages 3 and 4). Data collection was focused on renal and cardiovascular parameters...
April 20, 2017: São Paulo Medical Journal, Revista Paulista de Medicina
https://www.readbyqxmd.com/read/28443860/fabrication-of-large-area-polymer-microfilter-membranes-and-their-application-for-particle-and-cell-enrichment
#13
Javier Alejandro Hernández-Castro, Kebin Li, Anne Meunier, David Juncker, Teodor Veres
A vacuum assisted UV micro-molding (VAUM) process is proposed for the fabrication of freestanding and defect-free polymer membranes based on a UV-curable methacrylate polymer (MD 700). VAUM is a highly flexible and powerful method for fabricating low cost, robust, large-area membranes over 9 × 9 cm(2) with pore sizes from 8 to 20 μm in diameter, 20 to 100 μm in thickness, high aspect ratio (the thickness of the polymer over the diameter of the hole is up to 15 : 1), high porosity, and a wide variety of geometrical characteristics...
April 26, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28443676/pre-operative-nomograms-for-predicting-renal-function-at-1-year-after-partial-nephrectomy
#14
Cheuk Fan Shum, Clinton D Bahler, Clint Cary, Timothy A Masterson, Ronald S Boris, Thomas A Gardner, Hristos Z Kaimakliotis, Rick Foster, Richard Bihrle, Michael Koch, James E Slaven, Chandru P Sundaram
INTRODUCTION: Partial nephrectomy (PN) reduces the risk of post-operative chronic renal insufficiency (CRI). However, some patients still develop CRI after PN, and may eventually require dialysis. Being able to predict renal function before PN helps in counseling patients and managing expectations. We aimed to construct nomograms that predict estimated glomerular filtration rate (eGFR), defined by the Modification of Diet in Renal Disease (MDRD) and the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) formulae, at one year after PN, using only pre-operative covariates as predictors...
April 26, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28443646/on-the-dynamics-and-control-of-mechanical-properties-of-hierarchical-rotating-rigid-unit-auxetics
#15
Krzysztof K Dudek, Ruben Gatt, Luke Mizzi, Mirosław R Dudek, Daphne Attard, Kenneth E Evans, Joseph N Grima
In this work, we investigate the deformation mechanism of auxetic hierarchical rotating square systems through a dynamics approach. We show how their deformation behaviour, hence their mechanical properties and final configuration for a given applied load, can be manipulated solely by altering the resistance to rotational motion of the hinges within the system. This provides enhanced tunability without necessarily changing the geometry of the system, a phenomenon which is not typically observed in other non-hierarchical unimode auxetic systems...
April 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28443538/iohexol-clearance-for-determination-of-glomerular-filtration-rate-in-cynomolgus-monkeys-macaca-fascicularis
#16
Changqing Zhang, Shanshan Ding, Yupeng Fang, Li Zhang, Weimin Hu, Jinlian Lu, Tao Jing, Yi Tao, Xin Zhang
The purpose of this study was to validate a method for determine the glomerular filtration rate (GFR) in healthy cynomolgus monkeys by using iohexol. Eighteen healthy cynomolgus macaque monkeys (age, 4 to 6 y [mean, 5 y]; weight, 2 to 6 kg [mean, 4 kg]) were randomly entered into 3 different doses groups (3 male and 3 female macaques per group) of 30, 60, 90 mg I/kg to receive an intravenous bolus injection of iohexol. Serum iohexol concentrations were determined by using liquid chromatography-tandem mass spectrometry, and clearance rate were determined by using WinNonlin software...
April 25, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/28443267/no-impact-of-the-analytical-method-used-for-determining-cystatin-c-on-estimating-glomerular-filtration-rate-in-children
#17
Martin Alberer, Julia Hoefele, Marcus R Benz, Arend Bökenkamp, Lutz T Weber
BACKGROUND: Measurement of inulin clearance is considered to be the gold standard for determining kidney function in children, but this method is time consuming and expensive. The glomerular filtration rate (GFR) is on the other hand easier to calculate by using various creatinine- and/or cystatin C (Cys C)-based formulas. However, for the determination of serum creatinine (Scr) and Cys C, different and non-interchangeable analytical methods exist. Given the fact that different analytical methods for the determination of creatinine and Cys C were used in order to validate existing GFR formulas, clinicians should be aware of the type used in their local laboratory...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28442934/effect-of-glomerular-filtration-rate-at-dialysis-initiation-on-survival-in-patients-with-advanced-chronic-kidney-disease-what-is-the-effect-of-lead-time-bias
#18
Cynthia J Janmaat, Merel van Diepen, Raymond T Krediet, Marc H Hemmelder, Friedo W Dekker
PURPOSE: Current clinical guidelines recommend to initiate dialysis in the presence of symptoms or signs attributable to kidney failure, often with a glomerular filtration rate (GFR) of 5-10 mL/min/1.73 m(2). Little evidence exists about the optimal kidney function to start dialysis. Thus far, most observational studies have been limited by lead-time bias. Only a few studies have accounted for lead-time bias, and showed contradictory results. We examined the effect of GFR at dialysis initiation on survival in chronic kidney disease patients, and the role of lead-time bias therein...
2017: Clinical Epidemiology
https://www.readbyqxmd.com/read/28442697/when-should-we-give-up-filtration-surgery-indications-techniques-and-results-of-cyclodestruction
#19
Marisse Masis Solano, Guofu Huang, Shan C Lin
PURPOSE: Cyclodestructive procedures are traditionally used in cases of glaucoma that are refractory to medical and surgical therapy. The goal of this chapter is to describe the indications, contraindications, techniques, and pitfalls of cyclodestructive procedures, including transscleral cyclophotocoagulation (TCP), micropulse TCP (MP-TCP), endoscopic cyclophotocoagulation (ECP), and ultrasound cilioplasty. METHODS: A literature search for cyclodestructive techniques was performed, and relevant studies were included for evaluation and review...
2017: Developments in Ophthalmology
https://www.readbyqxmd.com/read/28442693/ab-interno-schlemm-s-canal-surgery
#20
Brian A Francis, Handan Akil, Benjamin B Bert
In primary open-angle glaucoma, the site of greatest resistance to aqueous outflow is thought to be the trabecular meshwork (TM) and inner wall of Schlemm's canal. Augmentation of the conventional (trabecular) outflow pathway can facilitate physiologic outflow and subsequently lower intraocular pressure. The most recent approach to enhancing the conventional outflow pathway is via an internal approach to the TM and Schlemm's canal. Ab interno Schlemm's canal surgery includes 4 novel surgical approaches: (1) removal of the TM and inner wall of Schlemm's canal by an internal approach (ab interno trabeculectomy), (2) implantation of a microstent to bypass the TM, (3) disruption of the TM and inner wall of Schlemm's canal via an internal approach (ab interno trabeculotomy), and (4) dilation of Schlemm's canal via an internal approach (ab interno canaloplasty)...
2017: Developments in Ophthalmology
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