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artificial kidney

Valentina Cardiello, Enrico Zecca, Mirta Corsello, Teresa Pianini, Francesca Serrao, Simonetta Costa, Francesco Cota
BACKGROUND: Hypernatremic dehydration is a complication of preterm infants with reportedly high morbility. In preterm infants, this happens due to a combination of low fluid intake, transepidermal water loss (TEWL), and immaturity of kidney function. Semipermeable membranes are self-adhesive membranes that can be applied as an artificial skin to reduce TEWL. AIMS: To test the hypothesis that early application of a semipermeable membrane (Tegaderm™) in preterm infants ≤30 weeks could result in a significant reduction of hypernatremia (serum Na > 145 mEq/l) during the first 15 days of life...
March 18, 2018: Early Human Development
Lu Dan, Shen Liu, Shengzhe Shang, Huihua Zhang, Ran Zhang, Ning Li
Targeted gene modification is a novel intervention strategy to increase disease resistance more quickly than traditional animal breeding. Human lysozyme, a natural, non-specific immune factor, participates in innate immunity, exerts a wide range of antimicrobial activities against pathogens, and has immuneregulatory effects. Therefore, it is a candidate gene for improved disease resistance in animals. In this study, we successfully generated a transgenic mouse model by microinjecting a modified bacterial artificial chromosome containing a recombinant human lysozyme (rhLZ) gene into the pronuclei of fertilized mouse embryos...
March 13, 2018: Journal of Biotechnology
Katrin Schelleckes, Boris Schmitz, Malte Lenders, Mirja Mewes, Stefan-Martin Brand, Eva Brand
KIBRA has been suggested as a key regulator of the hippo pathway, regulating organ size, cell contact inhibition as well as tissue regeneration and tumorigenesis. Recently, alterations of KIBRA expression caused by promotor methylation have been reported for several types of cancer. Our current study aimed to design an artificial transcription factor capable of re-activating expression of the tumor suppressor KIBRA and the hippo pathway. We engineered a new gene named 'ZFP226' encoding for a ~23 kDa fusion protein...
March 9, 2018: Scientific Reports
Yang Yu, Yuying Wei, Xiangrong Zhang, Xinyu Li
OBJECTIVE: To explore the effects of early intervention with heparin on function of coagulopathy, liver and kidney as well as the prognosis in rats with exertional heatstroke (EHS) under the ambient air of high temperature and low humidity. METHODS: 108 healthy SPF male Sprague-Dawley (SD) rats were randomly divided into normal temperature control group, EHS + normal saline (NS) group and EHS + heparin group. Of which 54 rats were collected for survival analysis (18 rats in each group), the weight change and 8-hour survival rate were observed, and Kaplan-Meier survival curves were drawn...
March 2018: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
Vipin Kumar Verma, Kumari Vandana Rani, Shiva Raj Kumar, Om Prakash
The laboratory acclimatized Clarias gariepinus (80 ± 10 g) were divided into six groups and five subgroups each containing 10 fish. A fish feed was reconstituted by adding 33% powder of Leucaena leucocephala seed in place of fish trash. Group B, C and E were fed on reconstituted feed and group A, D and F were fed on artificial feed containing animal protein for 7 days prior to start of experiments. Then Group B was challenged with BSA while other groups were challenged with Vibrio harveyi (Group C, D) and Pseudomonas aeruginosa (Group E, F)...
March 5, 2018: Fish & Shellfish Immunology
Mathieu Odijk, Albert van den Berg
In this review, we summarize recent advances in nanoscale electrochemistry, including the use of nanoparticles, carbon nanomaterials, and nanowires. Exciting developments are reported for nanoscale redox cycling devices, which can chemically amplify signal readout. We also discuss promising high-frequency techniques such as nanocapacitive CMOS sensor arrays or heterodyning. In addition, we review electrochemical microreactors for use in (drug) synthesis, biocatalysis, water treatment, or to electrochemically degrade urea for use in a portable artificial kidney...
March 8, 2018: Annual Review of Analytical Chemistry
Neil J Glassford, Rinaldo Bellomo
Acute kidney injury (AKI) is common, although commonly used clinical diagnostic markers are imperfect. Intravenous fluid administration remains a cornerstone of therapy worldwide, but there is minimal evidence of efficacy for the use of fluid bolus therapy outside of specific circumstances, and emerging evidence associates fluid accumulation with worse renal outcomes and even increased mortality among critically ill patients. Artificial colloid solutions have been associated with harm, and chloride-rich solutions may adversely affect renal function...
April 2018: Critical Care Clinics
Supawat Chatchen, Nutkridta Pongsakul, Chantragan Srisomsap, Wararat Chiangjong, Suradej Hongeng, Jisnuson Svasti, Somchai Chutipongtanate
BACKGROUND: Previous studies showed that ceftriaxone can cause acute kidney injury (AKI) in the pediatric population. This study proposed a cellular model of crystalline nephropathy in ceftriaxone-associated AKI and explored the related pathophysiology by using a proteomic approach. METHODS: Ceftriaxone was crystallized with calcium in artificial urine. Madin-Darby Canine Kidney (MDCK) cells, a model of distal renal tubular cell, were cultured in the absence (untreated control) or presence of ceftriaxone crystals for 48-h (n = 5 each)...
January 16, 2018: Nephron
Amanda K W Buck, Steven G Goebel, Mark S Goodin, Nathan J Wright, Joseph J Groszek, Jarrett Moyer, Sukhveer Singh, Danny Bluestein, William H Fissell, Shuvo Roy
An implantable artificial kidney using a hemofilter constructed from an array of silicon membranes to provide ultrafiltration requires a suitable blood flow path to ensure stable operation in vivo. Two types of flow paths distributing blood to the array of membranes were evaluated: parallel and serpentine. Computational fluid dynamics (CFD) simulations were used to guide the development of the blood flow paths. Pressure data from animal tests were used to obtain pulsatile flow conditions imposed in the transient simulations...
January 16, 2018: Journal of Biomechanics
Madhanlal Udhayarasu, Kalpana Ramakrishnan, Soundararajan Periasamy
Periodical monitoring of renal function, specifically for subjects with history of diabetic or hypertension would prevent them from entering into chronic kidney disease (CKD) condition. The recent increase in numbers may be due to food habits or lack of physical exercise, necessitates a rapid kidney function monitoring system. Presently, it is determined by evaluating glomerular filtration rate (GFR) that is mainly dependent on serum creatinine value and demographic parameters and ethnic value. Attempted here is to develop ethnic parameter based on skin texture for every individual...
December 2017: Healthcare Technology Letters
Anna Marie Williams, Yong Liu, Kevin R Regner, Fabrice Jotterand, Pengyuan Liu, Mingyu Liang
Big data is a major driver in the development of precision medicine. Efficient analysis methods are needed to transform big data into clinically-actionable knowledge. To accomplish this, many researchers are turning towards machine learning (ML), an approach of artificial intelligence (AI) that utilizes modern algorithms to give computers the ability to learn. Much of the effort to advance ML for precision medicine has been focused on the development and implementation of algorithms and the generation of ever larger quantities of genomic sequence data and electronic health records...
January 26, 2018: Physiological Genomics
L Weinberg, Mhg Li, L Churilov, A Armellini, M Gibney, T Hewitt, C O Tan, R Robbins, D Tremewen, C Christophi, R Bellomo
Fluid administration has been reported to be associated with an increased risk of acute kidney injury (AKI). We assessed whether, after correction for fluid balance, amount and chloride content of fluids administered have an independent association with AKI. We performed an observational study in patients after major surgery assessing the independent association of AKI with volume, chloride content and fluid balance, after adjustment for Physiological and Operative Severity Score for enUmeration of Mortality and morbidity (POSSUM) score, age, elective versus emergency surgery, and duration of surgery...
January 2018: Anaesthesia and Intensive Care
Ramy M Hanna, Daniel Cruz, Umut Selamet, Huma Hasnain, Murray Kwon, Arnold Baas, James Wilson
Severe heart failure is increasingly being managed by cardiac transplantation, and in some cases mechanical support devices serve as destination therapies. Left ventricular assist devices (LVADs) were approved for destination therapy for end stage heart failure patients before the more advanced total artificial heart modality became available. One common complication of mechanical assist device placement is acute kidney injury. Historically, patients with mechanical support devices have had to have inpatient hemodialysis until combined heart kidney transplant...
January 23, 2018: Hemodialysis International
Brendan C Dickson, Yun-Shao Sung, Marc K Rosenblum, Victor E Reuter, Mohammed Harb, Jay S Wunder, David Swanson, Cristina R Antonescu
NUT midline carcinoma is an aggressive tumor that occurs mainly in the head and neck and, less frequently, the mediastinum and lung. Following identification of an index case of a NUTM1 fusion positive undifferentiated soft tissue tumor, we interrogated additional cases of primary undifferentiated soft tissue and visceral tumors for NUTM1 abnormalities. Targeted next-generation sequencing was performed on RNA extracted from formalin-fixed paraffin-embedded tissue, and results validated by fluorescence in situ hybridization using custom bacterial artificial chromosome probes...
January 19, 2018: American Journal of Surgical Pathology
Juan Yang, Ying Liu, Jian Huang, Jinbang Xu, Xiumi You, Qiuping Lin, Junxin Zhang, Jingjing Dun, Shan Huang
OBJECTIVE: To explore the effect difference between acupuncture combined with Chinese medicine of artificial cycle therapy on the basis of western medication and simple western medication for polycystic ovarian syndrome (PCOS) of phlegm damp type with insulin resistance, and to explore its mechanism. METHODS: Sixty patients were randomly assigned into an observation group and a control group, 30 cases in each group. Patients of the control group began to take letrozole and metformin orally on the third menstrual day...
November 12, 2017: Zhongguo Zhen Jiu, Chinese Acupuncture & Moxibustion
Stéphane Gaudry, David Hajage, Frédérique Schortgen, Laurent Martin-Lefevre, Charles Verney, Bertrand Pons, Eric Boulet, Alexandre Boyer, Guillaume Chevrel, Nicolas Lerolle, Dorothée Carpentier, Nicolas de Prost, Alexandre Lautrette, Anne Bretagnol, Julien Mayaux, Saad Nseir, Bruno Megarbane, Marina Thirion, Jean-Marie Forel, Julien Maizel, Hodane Yonis, Philippe Markowicz, Guillaume Thiery, Florence Tubach, Jean-Damien Ricard, Didier Dreyfuss
RATIONALE: The optimal strategy for initiation of renal replacement therapy (RRT) in patients with severe acute kidney injury in the context of septic shock and acute respiratory distress syndrome (ARDS) is unknown. OBJECTIVE: To examine the effect of an early compared to a delayed RRT initiation strategy on 60-day mortality according to the baseline sepsis status, ARDS status and severity. METHODS: Post-hoc analysis of the AKIKI (Artificial-Kidney-Initiation in Kidney-Injury) trial...
January 19, 2018: American Journal of Respiratory and Critical Care Medicine
Ming-Guang Mao, Jie-Lan Jiang, Zhi-Qiang Jiang, Rui-Ting Liu, Qi-Ya Zhang, Jian-Fang Gui
Multiple functions of caspases include normal cell turnover, proper development and function of the immune system, hormone-dependent atrophy, embryonic development and chemical-induced cell injury. During artificial propagation of Pacific cod, Gadus macrocephalus, high mortality occurred during early development stages. Here, we performed various analyses on the cDNA and protein sequences of six different G. macrocephalus caspases namely GmCasp3, 6, 7, 8, 9 and 10, and tried to investigate the contributions of caspase family to the development and Nervous Necrosis Virus (NNV) resistance...
January 6, 2018: Fish & Shellfish Immunology
Tianyu Kang, Wei Ding, Luoyan Zhang, Daniel Ziemek, Kourosh Zarringhalam
BACKGROUND: Stratification of patient subpopulations that respond favorably to treatment or experience and adverse reaction is an essential step toward development of new personalized therapies and diagnostics. It is currently feasible to generate omic-scale biological measurements for all patients in a study, providing an opportunity for machine learning models to identify molecular markers for disease diagnosis and progression. However, the high variability of genetic background in human populations hampers the reproducibility of omic-scale markers...
December 19, 2017: BMC Bioinformatics
Yassaman Kazemi, Seyed Abolghasem Mirroshandel
The high morbidity rate associated with kidney stone disease, which is a silent killer, is one of the main concerns in healthcare systems all over the world. Advanced data mining techniques such as classification can help in the early prediction of this disease and reduce its incidence and associated costs. The objective of the present study is to derive a model for the early detection of the type of kidney stone and the most influential parameters with the aim of providing a decision-support system. Information was collected from 936 patients with nephrolithiasis at the kidney center of the Razi Hospital in Rasht from 2012 through 2016...
January 2018: Artificial Intelligence in Medicine
Øyvind S Svendsen, Marit Farstad, Arve Mongstad, Rune Haaverstad, Paul Husby, Venny L Kvalheim
INTRODUCTION: The use of cardiopulmonary bypass (CPB) leads to increased fluid filtration and edema. The use of artificial colloids to counteract fluid extravasation during cardiac surgery is controversial. Beneficial effects on global fluid loading, leading to better cardiac performance and hemodynamics, have been claimed. However, renal function and coagulation may be adversely affected, with unfavorable impact on outcome following cardiac surgery. METHODS: Forty patients were randomly allocated to study groups receiving either acetated Ringer's solution (CT group) or hydroxyethyl starch (HES group, Tetraspan® ) as CPB priming solution...
December 1, 2017: Perfusion
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