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https://www.readbyqxmd.com/read/28936029/silicon-nanoporous-membranes-as-a-rigorous-platform-for-validation-of-biomolecular-transport-models
#1
Benjamin J Feinberg, Jeff C Hsiao, Jaehyun Park, Andrew L Zydney, William H Fissell, Shuvo Roy
Microelectromechanical systems (MEMS), a technology that resulted from significant innovation in semiconductor fabrication, have recently been applied to the development of silicon nanopore membranes (SNM). In contrast to membranes fabricated from polymeric materials, SNM exhibit slit-shaped pores, monodisperse pore size, constant surface porosity, zero pore overlap, and sub-micron thickness. This development in membrane fabrication is applied herein for the validation of the XDLVO (extended Derjaguin, Landau, Verwey, and Overbeek) theory of membrane transport within the context of hemofiltration...
August 15, 2017: Journal of Membrane Science
https://www.readbyqxmd.com/read/28933102/-resources-industrialization-channels-and-strategies-of-active-polysaccharide-from-lycii-fructus-based-on-analysis-of-domestic-and-foreign-intellectual-properties
#2
REVIEW
Fang Zhang, Sheng Guo, Da-Wei Qian, Xia Zhang, Xiao-Chun Yang, Yong-Jing Li, Jin-Ao Duan
Lycii Fructus is a traditional medicinal and edible herb, with the function of liver and kidney nourishing, blood and eyesight replenishing. As the most important active substance in the fruits of Lycium barbarum, Lycium barbarum polysaccharides (LBP) have been demonstrated to play multiple pharmacological activities, with broad prospects for development and utilization. Based on the comprehensive deep analysis of global LBP patent output, the current patent LBP features were explored from the perspective of development trend, technology field distribution, time dimension, technology life curve and patent applicant...
December 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28926112/chronic-kidney-disease-and-vitamin-d-metabolism-in-human-bone-marrow-derived-mscs
#3
REVIEW
Shuanhu Zhou, Julie Glowacki
Vitamin D that is synthesized in the skin or is ingested undergoes sequential steps of metabolic activation via a cascade of cytochrome P450 enzymatic hydroxylations in the liver and kidney to produce 1α,25-dihydroxyvitamin D (1α,25(OH)2 D). There are many tissues that are able to synthesize 1α,25(OH)2 D, but the biological significance of extrarenal hydroxylases is unresolved. Human marrow-derived mesenchymal stem cells (marrow stromal cells, hMSCs) give rise to osteoblasts, and their differentiation is stimulated by 1α,25(OH)2 D...
August 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/28923641/simultaneous-kidney-pancreas-transplantation-with-an-original-transverse-pancreas-technique-initial-9-years-experience-with-56-cases
#4
J Paulino, A Martins, E Vigia, P Marcelino, A M Nobre, L Bicho, E Filipe, E Barroso
An innovative technique for pancreas transplantation is described. The main aspect consists of the horizontal positioning of the pancreas, which allows a better venous outflow, thus preventing thrombosis and graft loss. The program of pancreas transplantation in this national reference center for pancreatic and liver surgery was started in 2007; the initial results were considered poor, resulting in the loss of half of the grafts due to venous thrombosis. After analyzing the possible causes, this technique was proposed and successfully implemented, reducing the postoperative complications, particularly the problem of venous thrombosis...
October 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28922907/organ-vouchers-and-barter-markets-saving-lives-reducing-suffering-and-trading-in-human-organs
#5
Mark J Cherry
The essays in this issue of The Journal of Medicine and Philosophy explore an innovative voucher program for encouraging kidney donation. Discussions cluster around a number of central moral and political/theoretical themes: (1) What are the direct and indirect health care costs and benefits of such a voucher system in human organs? (2) Do vouchers lead to more effective and efficient organ procurement and allocation or contribute to greater inequalities and inefficiencies in the transplantation system? (3) Do vouchers contribute to the inappropriate commodification of human body parts? (4) Is there a significant moral difference between such a voucher system and a market in human organs for transplantation? This paper argues that while kidney vouchers constitute a step in the right direction, fuller utilization of market-based incentives, including, but not limited to, barter exchanges (e...
October 1, 2017: Journal of Medicine and Philosophy
https://www.readbyqxmd.com/read/28922904/the-body-as-gift-commodity-or-something-in-between-ethical-implications-of-advanced-kidney-donation
#6
Julian J Koplin
An innovative program recently initiated at the University of California, Los Angeles (UCLA) Medical Center allows people to donate a kidney in exchange for a voucher that a loved one can redeem for a kidney if and when needed. As a relatively new practice, the ethical implications of advanced kidney donation have not yet been widely discussed. This paper reflects on some of the bioethical issues at stake in this new donation program, as well as some broader philosophical issues related to the meaning and moral salience of commodification...
October 1, 2017: Journal of Medicine and Philosophy
https://www.readbyqxmd.com/read/28922903/banking-on-living-kidney-donors-a-new-way-to-facilitate-donation-without-compromising-on-ethical-values
#7
Dominique E Martin, Gabriel M Danovitch
Public surveys conducted in many countries report widespread willingness of individuals to donate a kidney while alive to a family member or close friend, yet thousands suffer and many die each year while waiting for a kidney transplant. Advocates of financial incentive programs or "regulated markets" in kidneys present the problem of the kidney shortage as one of insufficient public motivation to donate, arguing that incentives will increase the number of donors. Others believe the solutions lie-at least in part-in facilitating so-called "altruistic donation;" harnessing the willingness of relatives and friends to donate by addressing the many barriers which serve as disincentives to living donation...
October 1, 2017: Journal of Medicine and Philosophy
https://www.readbyqxmd.com/read/28922902/from-directed-donation-to-kidney-sale-does-the-argument-hold-up
#8
James Stacey Taylor
The UCLA Medical Center has initiated a "voucher program" under which a person who donated a kidney would receive a voucher that she could provide to someone of her choosing who could then use it to move to the top of the renal transplantation waiting list. If the use of such vouchers as incentives for donors is morally permissible, then cash payments for kidneys are also morally permissible. But, that argument faces five objections. First, there are some goods whose nature allows them to be exchanged for similar goods but renders them monetarily inalienable...
October 1, 2017: Journal of Medicine and Philosophy
https://www.readbyqxmd.com/read/28904872/treatment-of-renal-anemia-erythropoiesis-stimulating-agents-and-beyond
#9
REVIEW
Patrick Biggar, Gheun-Ho Kim
Anemia, complicating the course of chronic kidney disease, is a significant parameter, whether interpreted as subjective impairment or an objective prognostic marker. Renal anemia is predominantly due to relative erythropoietin (EPO) deficiency. EPO inhibits apoptosis of erythrocyte precursors. Studies using EPO substitution have shown that increasing hemoglobin (Hb) levels up to 10-11 g/dL is associated with clinical improvement. However, it has not been unequivocally proven that further intensification of erythropoiesis stimulating agent (ESA) therapy actually leads to a comprehensive benefit for the patient, especially as ESAs are potentially associated with increased cerebro-cardiovascular events...
September 2017: Kidney Research and Clinical Practice
https://www.readbyqxmd.com/read/28869173/-ablative-therapy-in-kidney-cancer-indications
#10
T Tricard, G Tsoumakidou, V Lindner, J Garnon, G Albrand, X Cathelineau, A Gangi, H Lang
BACKGROUND: Ablative therapies (AT) in kidney cancer are rising. It's important to evaluate the situation of this therapy. The aim of this study is to identify the best indications for AT treatment for kidney cancer. METHODS: Review of literature using Medline and Embase databases. Study were selected based on scientific relevance. Clinical keys centered on the best requirements to indicate ablative therapies. RESULTS: AT is indicated according to specific tumor and patients criteria...
August 28, 2017: Progrès en Urologie
https://www.readbyqxmd.com/read/28846728/carbon-nanotubes-exhibit-fibrillar-pharmacology-in-primates
#11
Simone Alidori, Daniel L J Thorek, Bradley J Beattie, David Ulmert, Bryan Aristega Almeida, Sebastien Monette, David A Scheinberg, Michael R McDevitt
Nanomedicine rests at the nexus of medicine, bioengineering, and biology with great potential for improving health through innovation and development of new drugs and devices. Carbon nanotubes are an example of a fibrillar nanomaterial poised to translate into medical practice. The leading candidate material in this class is ammonium-functionalized carbon nanotubes (fCNT) that exhibits unexpected pharmacological behavior in vivo with important biotechnology applications. Here, we provide a multi-organ evaluation of the distribution, uptake and processing of fCNT in nonhuman primates using quantitative whole body positron emission tomography (PET), compartmental modeling of pharmacokinetic data, serum biomarkers and ex vivo pathology investigation...
2017: PloS One
https://www.readbyqxmd.com/read/28837212/barriers-to-achieving-economies-of-scale-in-analysis-of-ehr-data-a-cautionary-tale
#12
Mark P Sendak, Suresh Balu, Kevin A Schulman
Signed in 2009, the Health Information Technology for Economic and Clinical Health Act infused $28 billion of federal funds to accelerate adoption of electronic health records (EHRs). Yet, EHRs have produced mixed results and have even raised concern that the current technology ecosystem stifles innovation. We describe the development process and report initial outcomes of a chronic kidney disease analytics application that identifies high-risk patients for nephrology referral. The cost to validate and integrate the analytics application into clinical workflow was $217,138...
August 9, 2017: Applied Clinical Informatics
https://www.readbyqxmd.com/read/28832450/hla-population-genetics-in-solid-organ-transplantation
#13
Evan P Kransdorf, Marcelo J Pando, Loren Gragert, Bruce Kaplan
HLAs are fundamental to the adaptive immune response and play critical roles in the cellular and humoral response in solid organ transplantation. The genes encoding HLA proteins are the most polymorphic within the human genome, with thousands of different allelic variants known within the population. Application of the principles of population genetics to the HLA genes has resulted in the development of a numeric metric, the calculated panel-reactive antibody (CPRA) that predicts the likelihood of a positive crossmatch as a function of a transplant candidate's unacceptable HLA antigens...
September 2017: Transplantation
https://www.readbyqxmd.com/read/28826941/mechanisms-of-mixed-chimerism-based-transplant-tolerance
#14
REVIEW
Julien Zuber, Megan Sykes
Immune responses to allografts represent a major barrier in organ transplantation. Immune tolerance to avoid chronic immunosuppression is a critical goal in the field, recently achieved in the clinic by combining bone marrow transplantation (BMT) with kidney transplantation following non-myeloablative conditioning. At high levels of chimerism such protocols can permit central deletional tolerance, but with a significant risk of graft-versus-host (GVH) disease (GVHD). By contrast, transient chimerism-based tolerance is devoid of GVHD risk and appears to initially depend on regulatory T cells (Tregs) followed by gradual, presumably peripheral, clonal deletion of donor-reactive T cells...
August 18, 2017: Trends in Immunology
https://www.readbyqxmd.com/read/28814170/a-novel-reverse-branch-technique-for-reconstruction-of-a-renal-artery-perfused-by-the-false-lumen-after-thoracic-endovascular-aortic-repair
#15
Jie Jin, Jun Bai, Yongfa Wu, Kangkang Zhi, Xiaomin Wang, Xingzhu Wen, Jianjin Wu, Lefeng Qu
PURPOSE: To describe an innovative endovascular technique that successfully reconstructs a renal artery completely perfused by the false lumen after thoracic endovascular aortic repair (TEVAR). CASE REPORT: A 65-year-old patient diagnosed with acute Stanford type B aortic dissection underwent successful TEVAR 4 years ago. Regular follow-up found that the thoracic aorta was well repaired, but the false lumen in the abdominal aorta had enlarged year by year. The left renal artery was supplied entirely by the false lumen, which caused kidney hypoperfusion...
August 1, 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/28803081/building-an-outpatient-kidney-palliative-care-clinical-program
#16
Jennifer S Scherer, Rebecca Wright, Caroline S Blaum, Stephen P Wall
CONTEXT: A diagnosis of advanced chronic kidney disease (CKD), or end stage renal disease (ESRD) represents a significant life change for patients and families. Individuals often experience high symptom burden, decreased quality of life, increased health care utilization, and end-of-life care discordant with their preferences. Early integration of palliative care with standard nephrology practice in the outpatient setting has the potential to improve quality of life through provision of expert symptom management, emotional support, and facilitation of advance care planning that honors the individual's values and goals...
August 9, 2017: Journal of Pain and Symptom Management
https://www.readbyqxmd.com/read/28802643/update-on-urinary-stones-in-children-current-and-future-concepts-in-surgical-treatment-and-shockwave-lithotripsy
#17
REVIEW
Mesrur Selcuk Silay, Jonathan S Ellison, Thomas Tailly, Paolo Caione
CONTEXT: Miniaturized instrumentation used for endoscopic treatment of urinary stone disease in children has been readily adopted in clinical practice. However, there is a need to optimize and individualize the surgical approach according to the patient's age, body habitus, and stone characteristics. Promising novel equipment and techniques will continue to advance the surgical care of these children. OBJECTIVE: To review the literature regarding surgical and shockwave lithotripsy (SWL) treatment of urinary stone disease in children and provide an overview on future treatment innovations...
August 9, 2017: European Urology Focus
https://www.readbyqxmd.com/read/28793823/role-of-atp-sensitive-potassium-channels-in-remote-ischemic-preconditioning-induced-tissue-protection
#18
Sapna Aggarwal, Puneet Kaur Randhawa, Nirmal Singh, Amteshwar Singh Jaggi
Remote ischemic preconditioning (RIPC) is an innovative treatment strategy that alleviates ischemia-reperfusion injury, whereby short episodes of regional ischemia and reperfusion delivered to remote organs including hind limb, kidney and intestine, and so on provide protection to the heart. The RIPC is known to reduce infarct size, serum levels of cardiac enzymes, and myocardial dysfunction in various animal species as well as in patients. There have been a large number of studies suggesting that the ATP-sensitive potassium channels (KATP channel) play a significant role as a mediator or end effector in RIPC...
September 2017: Journal of Cardiovascular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28763809/-correction-innovative-ultrasound-contrast-enhanced-ultrasound-of-the-kidneys
#19
Konrad Stock, Hubert Kübler, Tobias Maurer, Daniel Weiss, Hans-Peter Weskott, Uwe Heemann
No abstract text is available yet for this article.
April 2017: Aktuelle Urologie
https://www.readbyqxmd.com/read/28762128/physicochemical-characterization-of-iron-carbohydrate-colloid-drug-products
#20
Peng Zou, Katherine Tyner, Andre Raw, Sau Lee
Iron carbohydrate colloid drug products are intravenously administered to patients with chronic kidney disease for the treatment of iron deficiency anemia. Physicochemical characterization of iron colloids is critical to establish pharmaceutical equivalence between an innovator iron colloid product and generic version. The purpose of this review is to summarize literature-reported techniques for physicochemical characterization of iron carbohydrate colloid drug products. The mechanisms, reported testing results, and common technical pitfalls for individual characterization test are discussed...
July 31, 2017: AAPS Journal
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