90,430 results match your criteria Nephron Physiology[Journal]
J Am Soc Nephrol 2018 Dec 5. Epub 2018 Dec 5.
III. Department of Medicine,
Background: Nephron number is a major determinant of long-term renal function and cardiovascular risk. Observational studies suggest that maternal nutritional and metabolic factors during gestation contribute to the high variability of nephron endowment. However, the underlying molecular mechanisms have been unclear. Read More
Actas Urol Esp 2018 Dec 6;42(10):645-648. Epub 2018 Jul 6.
Servicio de Urología, Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Madrid, España.
Objective: To recall the history of the discovery of non-nephron cystic disease, detected simultaneously in 2 hospitals in Madrid, and the vicissitudes that the authors endured during the process of recognising this disease, while being ignored by the international scientific literature.
Material And Method: We analysed the authors' first publications and presentations, their correspondence relaying the difficulties in reporting the confusion with adult polycystic kidney disease (APKD) and the subsequent nosological identification of the process. We consulted with individuals who worked with the 2 authors to increase the accuracy and objectivity of the history report. Read More
J Pediatr Surg 2018 Nov 7. Epub 2018 Nov 7.
Pediatric Surgery Unit, Sapienza University of Rome, Rome, Italy. Electronic address:
Aim: We sought to assess the magnitude of functional decline and the natural history of the operated kidney residual function after zero-ischemia nephron-sparing surgery (Z-NSS) in children with unilateral renal tumor (URT).
Patients And Methods: 50 children were treated for URT at our surgical unit between 1992 and 2016. Of these 12 who underwent Z-NSS were available for the current analysis. Read More
Cell Rep 2018 Dec;25(10):2668-2675.e3
Division of Nephrology and Hypertension, Oregon Health & Science University, Portland, OR 97239, USA; Fondation LeDucq Transatlantic Networks of Excellence, Paris 75116, France; Renal Section, Veterans Affairs Portland Health Care System, Portland, OR 97239, USA.
Distal nephron remodeling contributes to the pathophysiology of many clinically relevant scenarios, including diuretic resistance and certain Mendelian disorders of blood pressure. However, constitutive genetic disruptions are likely to have substantial developmental effects in this segment, and whether tubule remodeling upon physiological stimuli is a normal homeostatic mechanism is not known. Since the distal nephron acts as a potassium sensor, we assessed proliferation and tubule length in three dimensions upon dietary or inducible genetic manipulation by using optical clearing of adult mouse kidneys, whole-mount immunolabeling, and advanced light microscopy. Read More
JAMA Surg 2018 Dec 5. Epub 2018 Dec 5.
Department of Urology, Stanford University Medical Center, Stanford, California.
Importance: Although the intent of nephron-sparing surgery is to eradicate malignant tumors found on preoperative imaging, benign masses often cannot be differentiated from malignant tumors. However, in the past there have been discrepancies in the reported percentages of benign masses removed by partial nephrectomy (PNx).
Objective: To investigate the annual trend of prevalence of benign pathologic findings after PNx and to investigate what potential factors are associated with this prevalence. Read More
Georgian Med News 2018 Oct(283):133-137
Higher State Educational Establishment of Ukraine «Bukovinian State Medical University», Chernivtsi, Ukraine.
The experiments conducted on non-linear mature laboratory albino rats determined that under conditions of subacute cadmium-nitrate intoxication the indices of proteinuria and acid-regulating renal function depend on acetylation phenotype. Unlike rapid acetylators considerable increase of protein concentration in urine (192,8%, р<0,05) and standardized by glomerular filtration protein excretion (141,7%, р<0,05) are indicative of higher susceptibility of rats with slow acetylation type to nephrotoxic action of cadmium chloride and sodium nitrate. Lack of protein loss with urine and adaptive-compensative character of acid-regulating renal function changes directed to elimination of hydrogen ions excess from the body give evidence concerning less intensive damage of the nephron tubular portion in rats with rapid acetylation type, and at the same time do not exclude development of nephropathy. Read More
Elife 2018 Dec 5;7. Epub 2018 Dec 5.
Department of Stem Cell Biology and Regenerative Medicine, Eli and Edythe Broad CIRM Center for Regenerative Medicine and Stem Cell Research, Keck School of Medicine, University of Southern California, Los Angeles, United States.
A normal endowment of nephrons in the mammalian kidney requires a balance of nephron progenitor self-renewal and differentiation throughout development. Here, we provide evidence for a novel action of ureteric branch tip-derived Wnt11 in progenitor cell organization and interactions within the nephrogenic niche, ultimately determining nephron endowment. In mutants, nephron progenitors dispersed from their restricted niche, intermixing with interstitial progenitors. Read More
J Am Soc Nephrol 2018 Dec 4. Epub 2018 Dec 4.
Pediatrics and Rare Diseases Group and
Background: Notch signaling is required during kidney development for nephron formation and principal cell fate selection within the collecting ducts. Whether Notch signaling is required in the adult kidney to maintain epithelial diversity, or whether its loss can trigger principal cell transdifferentiation (which could explain acquired diabetes insipidus in patients receiving lithium) is unclear.
Methods: To investigate whether loss of Notch signaling can trigger principal cells to lose their identity, we genetically inactivated and , inactivated the Notch signaling target , or induced expression of a Notch signaling inhibitor in all of the nephron segments and collecting ducts in mice after kidney development. Read More
Nephron 2018 Dec 4:1-12. Epub 2018 Dec 4.
Department of Nephrology, Toranomon Hospital, Tokyo, Japan.
Background: Cyst infection is a frequent and serious complication of autosomal dominant polycystic kidney disease (ADPKD) that is often difficult to treat. However, the factors influencing cyst infection are still unknown. Therefore, we investigated clinical factors related to the duration of hospitalization and death due to cyst infection. Read More
Transplant Direct 2018 Oct 7;4(10):e391. Epub 2018 Sep 7.
Department of Nephrology and Transplantation, Queen Elizabeth Hospital Birmingham, Birmingham, United Kingdom.
Background: Nephron endowment in renal transplantation is infrequently considered, but may have important implications for post kidney transplantation outcomes. In this population-cohort study, we analyzed the deceased-donor kidney transplant outcomes stratified by donor-to-recipient size ratios.
Methods: Data for all deceased-donor adult kidney transplantation recipients between 2003 and 2015 were extracted from the UK Transplant Registry. Read More
FASEB J 2018 Nov 29:fj201802054R. Epub 2018 Nov 29.
Department of Applied Physics, Science for Life Laboratory, Kungliga Tekniska Högskolan (KTH) Royal Institute of Technology, Solna, Sweden.
The central role of calcium signaling during development of early vertebrates is well documented, but little is known about its role in mammalian embryogenesis. We have used immunofluorescence and time-lapse calcium imaging of cultured explanted embryonic rat kidneys to study the role of calcium signaling for branching morphogenesis. In mesenchymal cells, we recorded spontaneous calcium activity that was characterized by irregular calcium transients. Read More
J Cancer Res Ther 2018 Oct-Dec;14(6):1434-1436
Urology Unit, Civil Hospital of Guastalla, Guastalla, RE, Italy.
We report the third case of bilateral metastatic renal meningeal hemangiopericytoma (HPC) 16 years after initial intracranial presentation. A 47-year-old male patient presented with abdominal mass drew our attention. Computed tomography (CT) demonstrated bilateral renal masses and another mass caudal to the lower pole of left kidney from which it was separated. Read More
Am J Physiol Renal Physiol 2018 Nov 28. Epub 2018 Nov 28.
Dept of Cellular and Integrative Physiology, University of Nebraska Medical Center, United States.
Special high K diets have cardio-protective effects and are often warranted in conjunction with diuretics such as furosemide for treating hypertension. However, it is not understood how a high K diet (HK) influences the actions of diuretics on renal K handling. Furosemide acidifies the urine by increasing acid secretion via the Na-H exchanger 3 (NHE3) in TAL and vacuolar H-ATPase (V-ATPase) in the distal nephron. Read More
Am J Physiol Renal Physiol 2018 Nov 28. Epub 2018 Nov 28.
Institut für Vegetative Anatomie, Charité Universitätsmedizin Berlin, Germany.
Hypokalemia contributes to the progression of chronic kidney disease, while a definitive pathophysiogical theory to explain this remains to be established. K deficiency results in profound alterations of renal epithelial transport. These include an increase of salt reabsorption via the Na,Cl-cotransporter (NCC) of the distal convoluted tubule (DCT), which minimizes electroneutral K loss in downstream nephron segments. Read More
Front Physiol 2018 12;9:1588. Epub 2018 Nov 12.
Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland.
Classically, trophic factors are considered as proteins which support neurons in their growth, survival, and differentiation. However, most neurotrophic factors also have important functions outside of the nervous system. Especially essential renal growth and differentiation regulators are glial cell line-derived neurotrophic factor (GDNF), bone morphogenetic proteins (BMPs), and fibroblast growth factors (FGFs). Read More
Am J Kidney Dis 2018 Oct 25. Epub 2018 Oct 25.
Division of Nephrology, Department of Pediatrics, NYU Langone Health, New York, NY. Electronic address:
Hypokalemia of renal origin can arise from genetic abnormalities in a variety of transporters or channel proteins that mediate tubular handling of potassium. Recently, mutations in claudin 10 have been documented in patients with hypokalemia in association with a range of other electrolyte abnormalities and skin and sweat gland manifestations. We report a 12-year-old Hispanic boy who presented with anhydrosis, aptyalism, alacrima, hypokalemia, and hypocalciuria, in whom we detected a homozygous mutation in the claudin 10 gene. Read More
Elife 2018 11 26;7. Epub 2018 Nov 26.
Department of Biological Sciences, University of Notre Dame, Indiana, United States.
Nephron segmentation involves a concert of genetic and molecular signals that are not fully understood. Through a chemical screen, we discovered that alteration of peroxisome proliferator-activated receptor (PPAR) signaling disrupts nephron segmentation in the zebrafish embryonic kidney (Poureetezadi et al., 2016). Read More
Rev Port Cardiol 2018 Nov 20. Epub 2018 Nov 20.
Unidade de Insuficiência Cardíaca, Serviço de Medicina III, Hospital São Francisco Xavier, Lisbon, Portugal; NOVA Medical School, Faculdade de Ciências Médicas, Universidade Nova de Lisboa, Lisbon, Portugal.
Heart failure is a high burden disease with elevated direct and indirect costs. Current treatment includes drugs that alter disease progression and drugs used to improve symptoms. Loop diuretics remain the cornerstone of congestion relief for acute management, as well as for chronic stabilization. Read More
Nephron 2018 Nov 22:1-8. Epub 2018 Nov 22.
Chair of Nephrology, Department of Public Health, University Federico II of Naples, Naples, Italy.
Background And Objectives: Progressive nephropathy is one of the main features of Fabry disease (FD). It has been supposed that an early phase, clinically silent disease occurs in childhood and adolescence and is characterized by glomerular hyperfiltration (HF). Surprisingly, although HF has been reported in several studies, its prevalence is at present unknown. Read More
J Surg Res 2018 Dec 9;232:614-620. Epub 2018 Aug 9.
Division of Pediatric Surgery, Department of Surgery, C.S. Mott Children's Hospital, University of Michigan, Ann Arbor, Michigan.
Background: Chemotherapy is used preoperatively for children with bilateral Wilms tumor (BWT) or unilateral high-risk Wilms tumor (UHRWT) to promote tumor regression to facilitate renal preservation with nephron-sparing surgery (NSS). In adults, various surgical techniques have been described to preserve renal tissue. Few studies have examined the use of surgical adjuncts in NSS in children with renal tumors. Read More
Nephron 2018 Nov 21:1-7. Epub 2018 Nov 21.
Selzman Institute for Kidney Health, Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA.
Background: Prognostic factors after dialysis initiation among older chronic kidney disease (CKD) patients are not well studied. In this study, we examined the risk factors associated with 1-year mortality after dialysis initiation among older CKD patients.
Methods: In this retrospective study, we included 621 CKD patients from an electronic medical record based CKD registry that was linked to the United States Renal Data System data. Read More
Acc Chem Res 2018 Nov 20. Epub 2018 Nov 20.
Beijing Engineering Research Center for BioNanotechnology and CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience , National Center for NanoScience and Technology , Beijing 100190 , P. R. China.
In native tissues, various cell types organize and spatiotemporally function and communicate with neighboring or remote cells in a highly regulated way. How can we replicate these amazing functional structures in vitro? From the view of a chemist, the heterogeneous cells and extracellular matrix (ECM) could be regarded as various chemical substrate materials for "synthetic" reactions during tissue engineering. But how can we accelerate these reactions? Microfluidics provides ideal solutions. Read More
Inflamm Res 2018 Nov 19. Epub 2018 Nov 19.
Department of Clinical Immunology, Transplantation Institute, Medical University of Warsaw, 59 Nowogrodzka St., 02-006, Warsaw, Poland.
Background: Osteopontin (OPN) is a pleiotropic glycoprotein expressed in various cell types in animals and in humans, including bone, immune, smooth muscle, epithelial and endothelial cells. Moreover, OPN is found in kidneys (in the thick ascending limbs of the loop of Henle and in distal nephrons) and urine. The protein plays an important role in mineralization and bone resorption. Read More
J Vis Exp 2018 Nov 1(141). Epub 2018 Nov 1.
Division of Renal-Electrolyte, Department of Medicine, University of Pittsburgh;
Preservation of glomerular structure and function is pivotal in the prevention of glomerulonephritis, a category of kidney disease characterized by proteinuria which can eventually lead to chronic and end-stage renal disease. The glomerulus is a complex apparatus responsible for the filtration of plasma from the body. In disease, structural integrity is lost and allows for the abnormal leakage of plasma contents into the urine. Read More
World J Urol 2018 Nov 17. Epub 2018 Nov 17.
Department of Radiology, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.
Purpose: An increasing interest in percutaneous ablation of renal tumors has been caused by the increasing incidence of SRMs, the trend toward minimally invasive nephron-sparing treatments and the rapid development of local ablative technologies. In the era of shared decision making, patient preference for non-invasive treatments also leads to an increasing demand for image-guided ablation. Although some guidelines still reserve ablation for poor surgical candidates, indications may soon expand as evidence for the use of the two most validated local ablative techniques, cryoablation (CA) and radiofrequency ablation (RFA), is accumulating. Read More
Nephron 2018 Nov 16:1-9. Epub 2018 Nov 16.
Division of Nephrology and Critical Care Nephrology Unit, Shanghai Ninth People's Hospital, Shanghai JiaoTong University, School of Medicine, Shanghai,
Background: It has been confirmed that regional citrate anticoagulation (RCA) plays an effective role in extracorporeal anticoagulation. The current trial-and-error calcium supplementation approach, with intensive monitoring of calcium levels, restricts the widespread use of RCA. Therefore, this study aimed to optimize the calcium supplementation approach for RCA. Read More
Am J Pathol 2018 Nov 15. Epub 2018 Nov 15.
Nephrologisches Zentrum, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Ludwig-Maximilians-Universität München, Munich, Germany. Electronic address:
Following renal ischemia-reperfusion injury (IRI) resolution of inflammation allows tubular regeneration, whereas ongoing inflammatory injury mediated by infiltrating leukocytes leads to nephron loss and renal fibrosis, typical hallmarks of chronic kidney disease. The atypical chemokine receptor 2 (ACKR2) is a chemokine decoy receptor, that binds and scavenges inflammatory CC-chemokines and reduces local leukocyte accumulation. We hypothesized that ACKR2 limits leukocyte infiltration, inflammation, and fibrotic tissue remodeling after renal IRI, thus preventing progression to chronic kidney disease. Read More
Urol Oncol 2018 Nov 13. Epub 2018 Nov 13.
Department of Urology, James Buchanan Brady Urological Institute, Johns Hopkins Medical Institutions, Baltimore, MD.
Introduction: A number of patients who elect active surveillance of their small renal masses (≤4 cm) subsequently pursue delayed intervention (DI). The indications, timing, and rates of DI have not been well determined prospectively.
Materials And Methods: Data from Delayed Intervention and Surveillance for Small Renal Masses, a prospective, multi-institutional registry was utilized to evaluate factors associated with DI between 2009 and 2018. Read More
Clin Trials 2018 Nov 16:1740774518813121. Epub 2018 Nov 16.
1 Cooperative Studies Program Coordinating Center (CSPCC), VA Connecticut Healthcare System, West Haven, CT, USA.
Background/aims:: Electronic medical records are now frequently used for capturing patient-level data in clinical trials. Within the Veterans Affairs health care system, electronic medical record data have been widely used in clinical trials to assess eligibility, facilitate referrals for recruitment, and conduct follow-up and safety monitoring. Despite the potential for increased efficiency in using electronic medical records to capture safety data via a centralized algorithm, it is important to evaluate the integrity and accuracy of electronic medical record-captured data. Read More
Clin Transl Oncol 2018 Nov 15. Epub 2018 Nov 15.
Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin Medical University, Tianjin, 300211, China.
Objective: This study is performed to explore the pathological characteristics and oncologic outcomes of T1 multifocal renal cell carcinoma (RCC).
Methods: The clinical data of 600 patients (442 males and 158 females) between the age of 29 and 73 years, diagnosed with T1 RCC were collected from three hospitals in China, out of which 421 cases had undergone nephron-sparing surgery (NSS) and 179 cases had undergone radical nephrectomy (RN) between December 2010 and January 2015.
Results: Tumor was identified with multifocality in 32 patients (5. Read More
Clin Sci (Lond) 2018 Dec 5;132(23):2519-2545. Epub 2018 Dec 5.
Department of Pediatrics, University of Virginia School of Medicine, Charlottesville, VA, U.S.A.
Congenital obstructive nephropathy is a major cause of chronic kidney disease (CKD) in children. The contribution of changes in the identity of renal cells to the pathology of obstructive nephropathy is poorly understood. Using a partial unilateral ureteral obstruction (pUUO) model in genetically modified neonatal mice, we traced the fate of cells derived from the renal stroma, cap mesenchyme, ureteric bud (UB) epithelium, and podocytes using , and mice respectively, crossed with double fluorescent reporter (membrane-targetted tandem dimer Tomato (mT)/membrane-targetted GFP (mG)) mice. Read More
Nephron 2018 Nov 13:1-7. Epub 2018 Nov 13.
Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan.
Background/aims: This study investigated whether peritoneal dialysis (PD) patients using icodextrin were at a reduced risk of stroke.
Methods: From Taiwan National Health Insurance data, it was found that there were 6,796 new end-stage renal disease patients undergoing dialysis between 2005 and 2011. We compared the risk of stroke between PD patients with or without icodextrin treatment. Read More
Nephron 2018 Nov 13:1-9. Epub 2018 Nov 13.
Department of Nephrology, The First Hospital of Jilin University, Changchun,
Background: With the wide use of sildenafil in kidney-transplanted patients, it is vital to recognize the effectiveness and safety in clinical practice.
Methods: Full-text articles involving the application of sildenafil after renal transplantation searched out in multiple databases were reviewed. All the meta-analyses were performed with Review Manager 5. Read More
Biochim Biophys Acta Biomembr 2018 Nov 10;1861(2):387-402. Epub 2018 Nov 10.
Laboratorio de Hematobiología, Escuela Nacional de Medicina y Homeopatía (ENMH), Instituto Politécnico Nacional (I.P.N.), México City, Mexico. Electronic address:
Hypertension (HTN), i.e. abnormally high blood pressure, is a major risk factor for heart attack, stroke, and kidney failure. Read More
Sci Data 2018 Nov 13;5:180218. Epub 2018 Nov 13.
Rangos Research Center, Children's Hospital of Pittsburgh of UPMC, Pittsburgh, PA, USA.
MicroRNAs (miRNAs) are small non-coding RNAs that are essential for the regulation of gene expression and play critical roles in human health and disease. Here we present comprehensive miRNA profiling data for mouse nephrogenic mesenchymal progenitors, a population of cells enriched for nephron progenitors that give rise to most cell-types of the nephron, the functional unit of the kidney. We describe a miRNA expression in nephrogenic mesenchymal progenitors, with 162 miRNAs differentially expressed in progenitors when compared to whole kidney. Read More
Balkan Med J 2018 Nov 12. Epub 2018 Nov 12.
Department of Anesthesiology, İstanbul University School of Medicine, İstanbul, Turkey.
Background: Laparoscopic partial nephrectomy, minimizing renal function loss due to its nephron sparing nature, has become a standard technique among many experienced centers worldwide in the surgical treatment of localized kidney tumors. Although partial nephrectomy will remain the gold standard, we need to improve perioperative management and surgical method to prevent postoperative acute kidney injury.
Aims: We aimed to demonstrate the frequency of the development of postoperative acute kidney injury following laparoscopic partial nephrectomy in patients with healthy contralateral kidney and the early predictive effects of serum neutrophil gelatinase-associated lipocalin in ischemia reperfusion injury and its association with the warm ischemia time. Read More
Purinergic Signal 2018 Nov 11. Epub 2018 Nov 11.
Department of Physiology, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI, 53226, USA.
Polycystic kidney diseases (PKDs) are a group of inherited nephropathies marked by formation of fluid-filled cysts along the nephron. Growing evidence suggests that in the kidney formation of cysts and alteration of cystic electrolyte transport are associated with purinergic signaling. PCK/CrljCrl-Pkhd1pck/CRL (PCK) rat, an established model of autosomal recessive polycystic kidney disease (ARPKD), was used here to test this hypothesis. Read More
Biochim Biophys Acta Gene Regul Mech 2018 Sep 14;1862(1):58-70. Epub 2018 Sep 14.
Medical and Research Services, Greater Los Angeles Veterans Affairs Healthcare System at Sepulveda, North Hills, CA, USA; University of California at Los Angeles, David Geffen School of Medicine, Los Angeles, CA, USA. Electronic address:
Emerging evidence from recent studies has unraveled the roles of long noncoding RNAs (lncRNAs) in the function of various tissues. However, little is known about the roles of lncRNAs in kidney development. In our present study, we aimed to identify functional lncRNAs in one of the three lineages of kidney progenitor cells, i. Read More
Nephron 2018 Nov 9. Epub 2018 Nov 9.
Nephron 2018 Nov 9:1-7. Epub 2018 Nov 9.
Division of Nephrology, Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of
Background: Previous cross-sectional studies have shown that low muscle mass is associated with albuminuria in the general population. However, the longitudinal association of low muscle mass with the development of albuminuria is not well known at this time.
Methods: We evaluated 48,101 individuals without chronic kidney disease (CKD) who underwent 2 health check-ups in 2012 and 2016. Read More
Nephron 2018 Nov 9:1-11. Epub 2018 Nov 9.
Nephrology Services, Saolta University Healthcare Group, Galway,
Background/aims: Three-day-a-week chronic haemodialysis (cHD) involves 1 long (72 h) and 2 short (48 h) inter-dialytic periods (IDPs). We aimed to determine whether BP control following the long IDP is inferior to the short IDPs.
Methods: All pre- and post-dialysis BP and weight measurements over a 4-week period were retrospectively analyzed among 135 clinically stable cHD patients at 2 academic centres with comparisons between measurements recorded following short and long IDPs. Read More
Sci Rep 2018 Nov 9;8(1):16618. Epub 2018 Nov 9.
Biocenter Oulu, Infotech Oulu, Center for Cell Matrix Research, Faculty of Biochemistry and Molecular Medicine, University of Oulu, Aapistie 5A, 90220, Oulu, Finland.
The kidney is a complex organ that is comprised of thousands of nephrons developing through reciprocal inductive interactions between metanephric mesenchyme (MM) and ureteric bud (UB). The MM undergoes mesenchymal to epithelial transition (MET) in response to the signaling from the UB. The secreted protein Wnt4, one of the Wnt family members, is critical for nephrogenesis as mouse Wnt4 mutants fail to form pretubular aggregates (PTA) and therefore lack functional nephrons. Read More
J Pharmacol Exp Ther 2018 Nov 9. Epub 2018 Nov 9.
Centre for Applied Pharmacokinetic Research, University of Manchester
In vitro-in vivo extrapolation (IVIVE) of renal excretory clearance (CLR) using the physiologically-based kidney models can provide mechanistic insight into the interplay of multiple processes occurring in the renal tubule. However, the ability of these models to quantitatively capture the impact of perturbed conditions (e.g. Read More
Ethn Dis 2018 18;28(4):539-548. Epub 2018 Oct 18.
Unit of Clinical Epidemiology and Evidence Based Medicine, Professor Edgard Santos University Hospital, Federal University of Bahia, Salvador, BA, Brazil.
Purpose: John Henryism (JH) is a strong behavioral predisposition to engage in high-effort coping with difficult socioenvironmental stressors. We investigated associations between JH and perceived general health (GH) among maintenance hemodialysis (MHD) patients in a multiracial Brazilian population.
Design: The 12-item John Henryism Acting Coping (JHAC) Scale was completed by 525 patients enrolled in The Prospective Study of the Prognosis of Hemodialysis Patients (PROHEMO) in Salvador (Bahia) Brazil. Read More
Int J Mol Sci 2018 Nov 6;19(11). Epub 2018 Nov 6.
Institute of Physiology, University of Hohenheim, D-70599 Stuttgart, Germany.
AMP-activated kinase (AMPK) is a serine/threonine kinase that is expressed in most cells and activated by a high cellular AMP/ATP ratio (indicating energy deficiency) or by Ca. In general, AMPK turns on energy-generating pathways (e.g. Read More
Nephrol Dial Transplant 2018 Nov 6. Epub 2018 Nov 6.
Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA.
Background: High glomerular filtration rate (GFR) is often used as a surrogate for single-nephron hyperfiltration. Our objective was to determine the definition for high GFR that best reflects clinical and structural characteristics of hyperfiltration.
Methods: We studied living kidney donors at the Mayo Clinic and Cleveland Clinic. Read More
Arch Esp Urol 2018 Nov;71(9):757-764
Hospital Universitario Cruces. Baracaldo. Bizkaia. España.
Objectives: We reviewed the feasibility and safety of nephron sparing surgery for renal cell carcinoma in patients with von Hippel Lindau (VHL) disease.
Methods: We selected 22 patients with (VHL) disease with a mean age of 43 (range 30-56), from whom 16 underwent radical nephrectomy or nephron sparing surgery at our department between 2000 and 2015.
Results: A total of 33 tumors were treated, by either tumorectomy (n=20), partial nephrectomy (n=5), percutaneous renal radiofrequency ablation (n=3) edaor radical nephrectomy (n=5). Read More
Am J Physiol Renal Physiol 2018 Nov 7. Epub 2018 Nov 7.
Hypertension and Vascular Research, Henry Ford Hospital, United States.
The anti-fibrotic peptide Ac-SDKP is released from Thymosin β4 (Tβ4) by meprin-α and prolyl oligopeptidase (POP) enzymes and is hydrolyzed by angiotensin-converting enzyme (ACE). Ac-SDKP is present in urine however it is not clear if de novo tubular release exists or the glomerular filtration is the main source. We hypothesized that Ac-SDKP is released in the lumen of the nephron and that it has an anti-fibrotic effect. Read More
Noncoding RNA 2018 Nov 3;4(4). Epub 2018 Nov 3.
Wales Kidney Research Unit, Division of Infection and Immunity, School of Medicine, College of Biomedical and Life Sciences, Cardiff University, Cardiff CF14 4XN, UK.
The kidneys play key roles in the maintenance of homeostasis, including fluid balance, blood filtration, erythropoiesis and hormone production. Disease-driven perturbation of renal function therefore has profound pathological effects, and chronic kidney disease is a leading cause of morbidity and mortality worldwide. Successive annual increases in global chronic kidney disease patient numbers in part reflect upward trends for predisposing factors, including diabetes, obesity, hypertension, cardiovascular disease and population age. Read More