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https://www.readbyqxmd.com/read/29149951/predictive-factors-of-renal-adaptation-after-nephrectomy-in-kidney-donors
#1
H J Kwon, D H Kim, H R Jang, S-H Jung, D H Han, H H Sung, J B Park, J E Lee, W Huh, S J Kim, Y-G Kim, D J Kim, H Y Oh
BACKGROUND: Despite compensatory hyperfiltration in remaining nephrons following donor nephrectomy, some donors show impaired renal adaptation and low estimated glomerular filtration rate (eGFR). We investigated the factors predicting early renal adaptation after nephrectomy and identified kidney donors at risk of inadequate renal adaptation. METHODS: A total of 265 living kidney donors from 2010 to 2013 were retrospectively analyzed. Renal function was serially followed for 6 months after the operation...
November 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/29145797/14-3-3%C3%AF-protein-expression-in-canine-renal-cell-carcinomas
#2
Alejandro Suárez-Bonnet, Ana Lara-García, Alexander L Stoll, Sofia Carvalho, Simon L Priestnall
14-3-3σ is a protein expressed in many epithelial tissues associated with essential cell functions, including cell-cycle control, apoptosis, and cytoskeletal integrity. There is a paucity of knowledge of the tumorigenesis of canine renal cell carcinomas (RCCs), and the histological origin of this tumor has not been established. This study analyzed the expression of 14-3-3σ, Ki-67, cytokeratins, and vimentin in 40 canine RCCs. Aberrant expression of 14-3-3σ was demonstrated in 15 (38%) cases and was associated with a significantly shorter survival time ( P < ...
January 1, 2017: Veterinary Pathology
https://www.readbyqxmd.com/read/29143769/senescent-nephropathy-the-new-renal-syndrome
#3
REVIEW
Florencia Aiello, Eliana P Dueñas, Carlos G Musso
Chronic kidney disease (CKD) is a condition characterized by progressive and irreversible deterioration of renal function due to the reduction of nephron mass for a period of at least three months. The prevalence of CKD is roughly 10% in the general population but increases with age, affecting more than one-third of people older than 65. Frailty is a condition usually found in elderly people, characterized by weakness, motility, and balance issues, with a declined ability to resist stressors leading to increased risks of adverse health outcomes including falls, fracture, hospitalization, institutionalization, disability, dependence, dementia, poor quality of life, and death...
October 28, 2017: Healthcare (Basel, Switzerland)
https://www.readbyqxmd.com/read/29142961/the-renal-pathology-of-obesity
#4
REVIEW
Nobuo Tsuboi, Yusuke Okabayashi, Akira Shimizu, Takashi Yokoo
Obesity causes various structural, hemodynamic, and metabolic alterations in the kidney. Most of these are likely to be compensatory responses to the systemic increase in metabolic demand that is seen with obesity. In some cases, however, renal injury becomes clinically apparent as a result of compensatory failure. Obesity-related glomerulopathy is the best known of such disease states. Factors that may sensitize obese individuals to renal compensatory failure and associated injury include the severity and number of obesity-associated conditions or complications, including components of metabolic syndrome, and the mismatch of body size to nephron mass, due to nephron reductions of congenital or acquired origin...
March 2017: KI Reports
https://www.readbyqxmd.com/read/29134970/circadian-potassium-excretion-is-unaffected-following-furosemide-induced-increase-in-sodium-delivery-to-the-distal-nephron
#5
B P Ilenwabor, E O Asowata, L F Obika
The mineralocorticoid aldosterone is widely accepted as a key regulator of K+ balance as well as urinary K+excretion. However, recent evidence suggests that the circadian control of K+ excretion is independent of aldosterone. Thedelivery of Na+ to the distal nephron is known to be an important determinant of aldosterone mediated secretion of K+ in thissegment of the nephron. Examining the link between distal Na+ delivery and K+ excretion; and how this link affect circadianK+ excretion will advance what is currently known about the maintenance of K+ homeostasis...
June 30, 2017: Nigerian Journal of Physiological Sciences: Official Publication of the Physiological Society of Nigeria
https://www.readbyqxmd.com/read/29134564/seom-clinical-guideline-for-treatment-of-kidney-cancer-2017
#6
E Gallardo, M J Méndez-Vidal, J L Pérez-Gracia, J M Sepúlveda-Sánchez, M Campayo, I Chirivella-González, X García-Del-Muro, A González-Del-Alba, E Grande, C Suárez
The goal of this article is to provide recommendations about the management of kidney cancer. Based on pathologic and molecular features, several kidney cancer variants were described. Nephron-sparing techniques are the gold standard of localized disease. After a randomized trial, sunitinib could be considered in adjuvant treatment in high-risk patients. Patients with advanced disease constitute a heterogeneous population. Prognostic classification should be considered. Both sunitinib and pazopanib are the standard options for first-line systemic therapy in advanced renal cell carcinoma...
November 13, 2017: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/29129523/higher-order-kidney-organogenesis-from-pluripotent-stem-cells
#7
Atsuhiro Taguchi, Ryuichi Nishinakamura
Organogenesis generates higher-order structures containing functional subunits, connective components, and progenitor niches. Despite recent advances in organoid-based modeling of tissue development, recapitulating these complex configurations from pluripotent stem cells (PSCs) has remained challenging. In this study, we report assembly of kidney organoids that recapitulate embryonic branching morphogenesis. By studying the distinct origins and developmental processes of the ureteric bud, which contains epithelial kidney progenitors that undergo branching morphogenesis and thereby plays a central role in orchestrating organ geometry, and neighboring mesenchymal nephron progenitors, we established a protocol for differential induction of each lineage from mouse and human PSCs...
November 4, 2017: Cell Stem Cell
https://www.readbyqxmd.com/read/29127451/development-and-validation-of-3d-printed-virtual-models-for-robot-assisted-radical-prostatectomy-and-partial-nephrectomy-urologists-and-patients-perception
#8
Francesco Porpiglia, Riccardo Bertolo, Enrico Checcucci, Daniele Amparore, Riccardo Autorino, Prokar Dasgupta, Peter Wiklund, Ashutosh Tewari, Evangelos Liatsikos, Cristian Fiori
PURPOSE: To test the face and content validity of 3D virtual-rendered printed models used before robot-assisted prostate cancer and nephron-sparing surgery. METHODS: Patients who underwent live surgery during an international urological meeting organized in January 2017 were enrolled. Those with organ-confined prostate cancer underwent robot-assisted radical prostatectomy. Patients with a single renal tumor underwent minimally invasive nephron-sparing surgery. High-resolution (HR) imaging was obtained for all patients...
November 10, 2017: World Journal of Urology
https://www.readbyqxmd.com/read/29120956/protein-kinase-c%C3%AE-deletion-causes-hypotension-and-decreased-vascular-contractility
#9
Brandi M Wynne, Cameron G McCarthy, Theodora Szasz, Patrick A Molina, Arlene B Chapman, R Clinton Webb, Janet D Klein, Robert S Hoover
AIM: Protein kinase Cα (PKCα) is a critical regulator of multiple cell signaling pathways including gene transcription, posttranslation modifications and activation/inhibition of many signaling kinases. In regards to the control of blood pressure, PKCα causes increased vascular smooth muscle contractility, while reducing cardiac contractility. In addition, PKCα has been shown to modulate nephron ion transport. However, the role of PKCα in modulating mean arterial pressure (MAP) has not been investigated...
November 8, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/29120692/epithelial-na-channel-regulation-by-extracellular-and-intracellular-factors
#10
Thomas R Kleyman, Ossama B Kashlan, Rebecca P Hughey
Epithelial Na(+) channels (ENaCs) are members of the ENaC/degenerin family of ion channels that evolved to respond to extracellular factors. In addition to being expressed in the distal aspects of the nephron, where ENaCs couple the absorption of filtered Na(+) to K(+) secretion, these channels are found in other epithelia as well as nonepithelial tissues. This review addresses mechanisms by which ENaC activity is regulated by extracellular factors, including proteases, Na(+), and shear stress. It also addresses other factors, including acidic phospholipids and modification of ENaC cytoplasmic cysteine residues by palmitoylation, which enhance channel activity by altering interactions of the channel with the plasma membrane...
November 8, 2017: Annual Review of Physiology
https://www.readbyqxmd.com/read/29120031/histopathological-immunohistochemical-and-stereological-analysis-of-the-effect-of-gingko-biloba-egb761-on-the-hippocampus-of-rats-exposed-to-long-term-cellphone-radiation
#11
Fikret Gevrek
Cellular phones are major sources of electromagnetic radiation (EMR) that can penetrate the human body and pose serious health hazards. The increasingly widespread use of mobile communication systems has raised concerns about the effects of cellphone radiofrequency (RF) on the hippocampus because of its close proximity to radiation during cellphone use. The effects of cellphone EMR exposure on the hippocampus of rats and the possible counteractive effects of ginkgo biloba (Egb761) were aimed to investigate...
November 9, 2017: Histology and Histopathology
https://www.readbyqxmd.com/read/29113990/notch-is-required-for-the-formation-of-all-nephron-segments-and-primes-nephron-progenitors-for-differentiation
#12
Eunah Chung, Patrick Deacon, Joo-Seop Park
Notch signaling plays important roles during mammalian nephrogenesis. To investigate if Notch regulates nephron segmentation, we performed Notch loss-of-function and gain-of-function studies in developing nephrons in mice. Contrary to the previous notion that Notch signaling promotes the formation of proximal tubules and represses the formation of distal tubules in the mammalian nephron, we show that inhibition of Notch blocks the formation of all nephron segments and that constitutive activation of Notch in developing nephrons does not promote or repress the formation of a specific segment...
November 7, 2017: Development
https://www.readbyqxmd.com/read/29108329/risk-of-acute-myocardial-infarction-in-upper-tract-urothelial-carcinoma-patients-receiving-radical-nephroureterectomy-a-population-based-cohort-study
#13
Shih-Yi Lin, Cheng-Li Lin, Chao-Hsiang Chang, His-Chin Wu, I-Kuan Wang, Che-Yi Chou, Ji-An Liang
Background: The outcomes of upper tract urothelial carcinoma (UTUC) receiving radical nephroureterectomy were usually limited to small sample size, case-control studies, and often focused on cancer progression. Risk of acute myocardial infarction (AMI) in these patients was never investigated. Results: The overall incidences of AMI were 3.39, 1.44, and 1.70 per 10,000 person-years in the radical nephroureterectomy, nonnephroureterectomy, and non-UTUC cohorts, respectively...
October 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/29107072/ectopic-phosphorylated-creb-marks-dedifferentiated-proximal-tubules-in-cystic-kidney-disease
#14
Pawan Puri, Caitlin M Schaefer, Daniel Bushnell, Mary E Taglienti, Jordan A Kreidberg, Bradley K Yoder, Carlton M Bates
Ectopic cAMP signaling is pathological in polycystic kidney disease; however, its spatio-temporal actions are unclear. We characterized expression of phosphorylated Creb (p-Creb), a target and mediator of cAMP signaling, in developing and cystic kidney models. We also examined tubule-specific effects of cAMP analogs in cystogenesis in embryonic kidney explants. In wild-type mice, p-Creb marked nephron progenitors (NP), early epithelial NP derivatives, ureteric bud, and cortical stroma; p-Creb was present in differentiated thick ascending limb of Henle, collecting duct, and stroma; however, it disappeared in mature NP-derived proximal tubules...
October 26, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/29104862/multiplex-partial-nephrectomy-repeat-partial-nephrectomy-and-salvage-partial-nephrectomy-remain-the-primary-treatment-in-multifocal-and-hereditary-kidney-cancer
#15
REVIEW
Joseph A Baiocco, Adam R Metwalli
The standard of care treatment for solitary renal cell carcinoma (RCC) tumors 4 cm or less is partial nephrectomy (PNx). However, multifocal kidney cancer presents unique challenges for treating physicians. Historically, total nephrectomy and hemodialysis with possible renal transplant later was the primary therapeutic strategy for these patients. Later, as nephron sparing surgical approaches improved, PNx became the standard of care for patients presenting with multifocal and hereditary RCC. Surgeries to remove multiple renal tumors simultaneously produce different perioperative outcomes and increased risk of complications...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/29104159/physiological-and-pathophysiological-implications-of-pge2-and-the-pge2-synthases-in-the-kidney
#16
REVIEW
Jing Wang, Min Liu, Xiaoyan Zhang, Guangrui Yang, Lihong Chen
Prostaglandin E2 (PGE2) is the most abundant prostanoid synthesized in the kidney and plays an important role in renal function. Physiologically, PGE2 regulates renal hemodynamics, water and sodium metabolism, blood pressure, and so on. As a well-known proinflammatory lipid mediator, PGE2 also substantially mediates renal injury under many pathophysiological conditions. Multiple enzymes are involved in renal PGE2 biosynthesis, including the three main PGE2 terminal synthases, i.e. microsomal PGE2 synthase-1 (mPGES-1), mPGES-2 and cytosolic PGE2 synthase (cPGES)...
November 2, 2017: Prostaglandins & Other Lipid Mediators
https://www.readbyqxmd.com/read/29103408/effects-of-bisphenol-a-treatment-during-pregnancy-on-kidney-development-in-mice-a-stereological-and-histopathological-study
#17
P Nuñez, T Fernandez, M García-Arévalo, P Alonso-Magdalena, A Nadal, C Perillan, J Arguelles
Bisphenol A (BPA) is a chemical found in plastics that resembles oestrogen in organisms. Developmental exposure to endocrine-disrupting chemicals, such as BPA, increases the susceptibility to type 2 diabetes (T2DM) and cardiovascular diseases. Animal studies have reported a nephron deficit in offspring exposed to maternal diabetes. The aim of this study was to investigate the prenatal BPA exposure effects on nephrogenesis in a mouse model that was predisposed to T2DM. This study quantitatively evaluated the renal structural changes using stereology and histomorphometry methods...
November 6, 2017: Journal of Developmental Origins of Health and Disease
https://www.readbyqxmd.com/read/29102372/renal-potassium-physiology-integration-of-the-renal-response-to-dietary-potassium-depletion
#18
REVIEW
Kamel S Kamel, Martin Schreiber, Mitchell L Halperin
We summarize the current understanding of the physiology of the renal handling of potassium (K(+)), and present an integrative view of the renal response to K(+) depletion caused by dietary K(+) restriction. This renal response involves contributions from different nephron segments, and aims to diminish the rate of excretion of K(+) as a result of: decreasing the rate of electrogenic (and increasing the rate of electroneutral) reabsorption of sodium in the aldosterone-sensitive distal nephron (ASDN), decreasing the abundance of renal outer medullary K(+) channels in the luminal membrane of principal cells in the ASDN, decreasing the flow rate in the ASDN, and increasing the reabsorption of K(+) in the cortical and medullary collecting ducts...
November 1, 2017: Kidney International
https://www.readbyqxmd.com/read/29101170/the-prorenin-receptor-in-the-cardiovascular-system-and-beyond
#19
Matthew T Hennrikus, Alexis A Gonzalez, Minolfa C Prieto
Since the prorenin receptor (PRR) was first reported, investigations into its role in many cellular processes have been underway. Renin and prorenin binding to PRR and its soluble form (sPRR) increases angiotensin I formation and intracellular pathways resulting in induction of profibrotic factors. The PRR has supplementary roles as a vital accessory protein of the vacuolar-type H+-ATPase and also as an intermediate in Wnt signaling. As a component of the H-ATPase, the PRR has been found upregulated during cardiac stress...
November 3, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29098196/perirenal-abscess-after-partial-nephrectomy-because-of-migration-of-upper-calix-stone-and-urine-leakage-a-case-report
#20
Sheng-Chun Hung, Li-Wen Chang, Cheng-Kuang Yang
Background: Nephron-sparing surgery has been shown to achieve oncological results equivalent to those of radical nephrectomy in patients with compromised renal function who have renal tumors <4 cm. However, technical difficulties and potential surgical complications remain challenges to the surgeon. Various factors, such as tumor size and location, collecting system invasion, and patient's expectations, are major concerns that may affect the feasibility of performing an effective partial nephrectomy. We report a patient with renal cell carcinoma who underwent open partial nephrectomy and suffered from complications of perirenal abscess because of stone migration, obstruction, and subsequence urine leakage...
2017: Journal of Endourology Case Reports
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