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https://www.readbyqxmd.com/read/28722750/protein-kinase-d-exerts-neuroprotective-functions-during-oxidative-stress-via-nuclear-factor-kappab-independent-signaling-pathways
#1
Hanna Liliom, Krisztián Tárnok, Zsófia Ábrahám, Bence Rácz, Angelika Hausser, Katalin Schlett
Members of the protein kinase D (PKD) family of serine/threonine kinases are known to exert diverse roles in neuronal stress responses. Here we show the transient activation and nuclear translocation of endogenous PKD upon oxidative stress induced by H2 O2 treatment in primary neuronal cultures. Using pharmacological inhibition we show that PKD activity protects neurons from oxidative stress induced cell death. Although members of the canonical NFκB pathway were phosphorylated upon H2 O2 treatment, it was found that the neuronal response to oxidative stress is not executed through the nuclear translocation and activity of RelA...
July 19, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28716882/protein-kinase-d-at-the-golgi-controls-nlrp3-inflammasome-activation
#2
Zhirong Zhang, Gergö Meszaros, Wan-Ting He, Yanfang Xu, Helena de Fatima Magliarelli, Laurent Mailly, Michael Mihlan, Yansheng Liu, Marta Puig Gámez, Alexander Goginashvili, Adrien Pasquier, Olga Bielska, Bénédicte Neven, Pierre Quartier, Rudolf Aebersold, Thomas F Baumert, Philippe Georgel, Jiahuai Han, Romeo Ricci
The inflammasomes are multiprotein complexes sensing tissue damage and infectious agents to initiate innate immune responses. Different inflammasomes containing distinct sensor molecules exist. The NLRP3 inflammasome is unique as it detects a variety of danger signals. It has been reported that NLRP3 is recruited to mitochondria-associated endoplasmic reticulum membranes (MAMs) and is activated by MAM-derived effectors. Here, we show that in response to inflammasome activators, MAMs localize adjacent to Golgi membranes...
July 17, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28709639/ganoderma-triterpenes-retard-renal-cyst-development-by-downregulating-ras-mapk-signaling-and-promoting-cell-differentiation
#3
Limin Su, Liying Liu, Yingli Jia, Lei Lei, Jiangfeng Liu, Shuai Zhu, Hong Zhou, Ruoyun Chen, Hua Ann Jenny Lu, Baoxue Yang
Autosomal dominant polycystic kidney disease (ADPKD) is a common monogenetic disease characterized by the progressive development of renal cysts with further need for effective therapy. Here our aim was to investigate the effect of Ganoderma triterpenes (GT) on the development of kidney cysts. Importantly, GT attenuated cyst development in two mouse models of ADPKD with phenotypes of severe cystic kidney disease. Assays for tubulogenesis showed that GT promoted epithelial tubule formation in MDCK cells, suggesting a possible effect on epithelial cell differentiation...
July 11, 2017: Kidney International
https://www.readbyqxmd.com/read/28705885/fibroblast-growth-factor-23-and-kidney-disease-progression-in-autosomal-dominant-polycystic-kidney-disease
#4
Michel Chonchol, Berenice Gitomer, Tamara Isakova, Xuan Cai, Isidro Salusky, Renata Pereira, Kaleab Abebe, Vicente Torres, Theodor I Steinman, Jared J Grantham, Arlene B Chapman, Robert W Schrier, Myles Wolf
BACKGROUND AND OBJECTIVES: Increases in fibroblast growth factor 23 precede kidney function decline in autosomal dominant polycystic kidney disease; however, the role of fibroblast growth factor 23 in autosomal dominant polycystic kidney disease has not been well characterized. DESIGN, SETTING, PARTICIPANTS & MEASUREMENTS: We measured intact fibroblast growth factor 23 levels in baseline serum samples from 1002 participants in the HALT-PKD Study A (n=540; mean eGFR =91±17 ml/min per 1...
July 13, 2017: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/28701314/cux1-promotes-cell-proliferation-and-polycystic-kidney-disease-progression-in-an-adpkd-mouse-model
#5
Binu Porath, Safia Livingston, Erica L Andres, Alexandra M Petrie, Joshua C Wright, Anna E Woo, Carol G Carlton, Richard Baybutt, Gregory B Vanden Heuvel
Autosomal Dominant Polycystic Kidney Disease (ADPKD) is one of the most common monogenic hereditary disorders in humans characterized by fluid-filled cysts, primarily in the kidneys. Cux1, a cell cycle regulatory gene highly expressed during kidney development, is elevated in the cyst-lining cells of Pkd1 mutant mice, and in human ADPKD cells. However, forced expression of Cux1 is insufficient to induce cystic disease in transgenic mice, or to induce rapid cyst formation after cilia disruption in the kidneys of adult mice...
July 12, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28679762/aav-serotypes-have-distinctive-interactions-with-domains-of-the-cellular-receptor-aavr
#6
Sirika Pillay, Wei Zou, Fang Cheng, Andreas S Puschnik, Nancy L Meyer, Safder S Ganaie, Xuefeng Deng, Jonathan E Wosen, Omar Davulcu, Ziying Yan, John F Engelhardt, Kevin E Brown, Michael S Chapman, Jianming Qiu, Jan E Carette
Adeno-associated virus (AAV) entry is determined by its interactions with specific surface glycans and proteinaceous receptor(s). Adeno-associated virus receptor (AAVR; also named KIAA0319L) is an essential cellular receptor required for the transduction of vectors derived from multiple AAV serotypes including the evolutionary distant serotypes, AAV2 and AAV5. Here, we further biochemically characterize the AAV-AAVR interaction and define the domains within the ectodomain of AAVR that facilitate this interaction...
July 5, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28679364/understanding-barriers-to-medication-dietary-and-lifestyle-treatments-prescribed-in-polycystic-kidney-disease
#7
Wen-Ching Tran, David Huynh, Tea Chan, Catherine A Chesla, Meyeon Park
BACKGROUND: Autosomal dominant polycystic kidney disease (PKD) is the most common genetic renal disease and the fourth leading cause of end-stage renal disease in the United States. Although there is no cure for PKD, several treatments are considered to be beneficial, including blood pressure control, exercise, low-salt diet, and high volume water intake. However, levels of understanding of the importance of these treatments and adherence to these recommendations vary among patients. This study explores illness perception models of patients with PKD to reveal barriers in adherence to prescribed therapies; satisfaction with medical care; and sources of medical information...
July 5, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28675664/obestatin-controls-the-ubiquitin-proteasome-and-autophagy-lysosome-systems-in-glucocorticoid-induced-muscle-cell-atrophy
#8
Tania Cid-Díaz, Icía Santos-Zas, Jessica González-Sánchez, Uxía Gurriarán-Rodríguez, Carlos S Mosteiro, Xesús Casabiell, Tomás García-Caballero, Vincent Mouly, Yolanda Pazos, Jesús P Camiña
BACKGROUND: Many pathological states characterized by muscle atrophy are associated with an increase in circulating glucocorticoids and poor patient prognosis, making it an important target for treatment. The development of treatments for glucocorticoid-induced and wasting disorder-related skeletal muscle atrophy should be designed based on how the particular transcriptional program is orchestrated and how the balance of muscle protein synthesis and degradation is deregulated. Here, we investigated whether the obestatin/GPR39 system, an autocrine/paracrine signaling system acting on myogenesis and with anabolic effects on the skeletal muscle, could protect against glucocorticoid-induced muscle cell atrophy...
July 3, 2017: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/28664236/alterations-in-biomechanical-properties-of-the-cornea-among-patients-with-polycystic-kidney-disease
#9
Kubra Serefoglu Cabuk, Bennur Esen, Kursat Atalay, Ahmet Kirgiz, Rukiye Aydin
PURPOSE: The aim of this study was to evaluate the corneal biomechanical features in polycystic kidney disease (PKD) patients and compare them with the healthy individuals. METHODS: Totally 81 patients with a mean age of 48.46 ± 14.51 years and 60 control cases with a mean age of 44.68 ± 12.69 years were included in the study. All of the subjects underwent a complete ophthalmological examination, including visual acuity testing, biomicroscopic anterior and posterior segment examinations...
June 29, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28644734/high-throughput-phenotypic-screening-of-kinase-inhibitors-to-identify-drug-targets-for-polycystic-kidney-disease
#10
Tijmen H Booij, Hester Bange, Wouter N Leonhard, Kuan Yan, Michiel Fokkelman, Steven J Kunnen, Johannes G Dauwerse, Yu Qin, Bob van de Water, Gerard J P van Westen, Dorien J M Peters, Leo S Price
Polycystic kidney disease (PKD) is a prevalent disorder characterized by renal cysts that lead to kidney failure. Various signaling pathways have been targeted to stop disease progression, but most interventions still focus on alleviating PKD-associated symptoms. The mechanistic complexity of the disease, as well as the lack of functional in vitro assays for compound testing, has made drug discovery for PKD challenging. To identify modulators of PKD, Pkd1(-/-) kidney tubule epithelial cells were applied to a scalable and automated 3D cyst culture model for compound screening, followed by phenotypic profiling to determine compound efficacy...
June 1, 2017: SLAS Discovery
https://www.readbyqxmd.com/read/28640449/polycystic-kidney-disease
#11
Joseph Ghata, Benjamin D Cowley
Renal cysts, which arise from renal tubules, can be seen in a variety of hereditary and nonhereditary entities. Common mechanisms associated with renal cyst formation include increased cell proliferation, epithelial fluid secretion, and extracellular matrix remodeling. Hereditary polycystic kidney disease (PKD) is seen as a component of numerous diseases. Autosomal dominant (AD) PKD is the most common potentially fatal hereditary disease in humans, causes renal failure in approximately 50% of affected individuals, and accounts for approximately 5% of end stage renal disease cases in the United States...
June 18, 2017: Comprehensive Physiology
https://www.readbyqxmd.com/read/28630289/green-mamba-peptide-targets-type-2-vasopressin-receptor-against-polycystic-kidney-disease
#12
Justyna Ciolek, Helen Reinfrank, Loïc Quinton, Say Viengchareun, Enrico A Stura, Laura Vera, Sabrina Sigismeau, Bernard Mouillac, Hélène Orcel, Steve Peigneur, Jan Tytgat, Laura Droctové, Fabrice Beau, Jerome Nevoux, Marc Lombès, Gilles Mourier, Edwin De Pauw, Denis Servent, Christiane Mendre, Ralph Witzgall, Nicolas Gilles
Polycystic kidney diseases (PKDs) are genetic disorders that can cause renal failure and death in children and adults. Lowering cAMP in cystic tissues through the inhibition of the type-2 vasopressin receptor (V2R) constitutes a validated strategy to reduce disease progression. We identified a peptide from green mamba venom that exhibits nanomolar affinity for the V2R without any activity on 155 other G-protein-coupled receptors or on 15 ionic channels. Mambaquaretin-1 is a full antagonist of the V2R activation pathways studied: cAMP production, beta-arrestin interaction, and MAP kinase activity...
July 3, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28627494/first-record-of-proliferative-kidney-disease-agent-tetracapsuloides-bryosalmonae-in-wild-brown-trout-and-european-grayling-in-finland
#13
Anti Vasemägi, Ilkka Nousiainen, Ari Saura, Juha-Pekka Vähä, Jorma Valjus, Ari Huusko
The myxozoan endoparasite Tetracapsuloides bryosalmonae causes temperature-driven proliferative kidney disease (PKD) in salmonid fishes. Despite the economic and ecological importance of PKD, information about the distribution of the parasite is still scarce. Here, we report for the first time the occurrence of T. bryosalmonae in wild brown trout Salmo trutta and European grayling Thymallus thymallus populations in Finland. We detected T. bryosalmonae at high prevalence in both brown trout and European grayling from the transboundary Finnish-Russian River Koutajoki system (Rivers Oulankajoki, Kuusinkijoki, Kitkajoki, Maaninkajoki, and Juumajoki) in north-eastern Finland...
June 19, 2017: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/28616208/patient-survey-of-current-water-intake-practices-in-autosomal-dominant-polycystic-kidney-disease-the-sips-survey
#14
Ragada El-Damanawi, Tess Harris, Richard N Sandford, Fiona E Karet Frankl, Thomas F Hiemstra
Background: Autosomal dominant polycystic kidney disease (ADPKD) affects 12.5 million worldwide. Vasopressin drives cysts growth and in animal models can be suppressed through high water intake. A randomized controlled trial of 'high' versus 'standard' water intake in ADPKD is essential to determine if this intervention is beneficial. We conducted an ADPKD patient survey to gain an understanding of current fluid intake practices and the design challenges of a randomized water intake trial. Methods: In collaboration with the PKD Charity, we developed and distributed an online survey to ADPKD patients over age 16 years and not on renal replacement therapy...
June 2017: Clinical Kidney Journal
https://www.readbyqxmd.com/read/28614813/polycystic-kidney-disease-and-the-vasopressin-pathway
#15
Maatje D A van Gastel, Vicente E Torres
Vasopressin, also known as arginine vasopressin or antidiuretic hormone, plays a pivotal role in maintaining body homeostasis. Increased vasopressin concentrations, measured by its surrogate copeptin, have been associated with disease severity as well as disease progression in polycystic kidney disease (PKD), and in experimental studies vasopressin has been shown to directly regulate cyst growth. Blocking vasopressin effects on the kidney via the vasopressin V2-receptor and lower circulating vasopressin concentration are potential treatment opportunities that have been the subject of study in PKD in recent years...
2017: Annals of Nutrition & Metabolism
https://www.readbyqxmd.com/read/28614117/role-of-amp-activated-protein-kinase-in-kidney-tubular-transport-metabolism-and-disease
#16
Roshan Rajani, Nuria M Pastor-Soler, Kenneth R Hallows
PURPOSE OF REVIEW: AMP-activated protein kinase (AMPK) is a metabolic sensor that regulates cellular energy balance, transport, growth, inflammation, and survival functions. This review explores recent work in defining the effects of AMPK on various renal tubular epithelial ion transport proteins as well as its role in kidney injury and repair in normal and disease states. RECENT FINDINGS: Recently, several groups have uncovered additional functions of AMPK in the regulation of kidney and transport proteins...
June 12, 2017: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/28604386/lysine-methyltransferase-smyd2-promotes-cyst-growth-in-autosomal-dominant-polycystic-kidney-disease
#17
Linda Xiaoyan Li, Lucy X Fan, Julie Xia Zhou, Jared J Grantham, James P Calvet, Julien Sage, Xiaogang Li
Autosomal dominant polycystic kidney disease (ADPKD) is driven by mutations in PKD1 and PKD2 genes. Recent work suggests that epigenetic modulation of gene expression and protein function may play a role in ADPKD pathogenesis. In this study, we identified SMYD2, a SET and MYND domain protein with lysine methyltransferase activity, as a regulator of renal cyst growth. SMYD2 was upregulated in renal epithelial cells and tissues from Pkd1-knockout mice as well as in ADPKD patients. SMYD2 deficiency delayed renal cyst growth in postnatal kidneys from Pkd1 mutant mice...
June 30, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28578020/pathogenicity-analysis-of-novel-variations-in-chinese-han-patients-with-polycystic-kidney-disease
#18
Zishui Fang, Shiyan Xu, Yonghua Wang, Liwei Sun, Yi Feng, Yibin Guo, Hongyi Li, Weiying Jiang
OBJECTIVE: Locus and allellic heterogeneity in polycystic kidney disease (PKD) is a great challenge in precision diagnosis. We aim to establish comprehensive methods to distinguish the pathogenic mutations from the variations in PKD1, PKD2 and PKHD1 genes in a limited time and lay the foundation for precisely prenatal diagnosis, preimplantation genetic diagnosis and presymptom diagnosis of PKD. METHODS: Nested PCR combined with direct DNA sequencing were used to screen variations in PKD1, PKD2 and PKHD1 genes...
May 31, 2017: Gene
https://www.readbyqxmd.com/read/28577984/protein-kinase-d-signaling-in-cancer-a-friend-or-foe
#19
REVIEW
Adhiraj Roy, Jing Ye, Fan Deng, Qiming Jane Wang
Protein kinase D is a family of evolutionarily conserved serine/threonine kinases that belongs to the Ca(++)/Calmodulin-dependent kinase superfamily. Signal transduction pathways mediated by PKD can be triggered by a variety of stimuli including G protein-coupled receptor agonists, growth factors, hormones, and cellular stresses. The regulatory mechanisms and physiological roles of PKD have been well documented including cell proliferation, survival, migration, angiogenesis, regulation of gene expression, and protein/membrane trafficking...
May 31, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28550374/performance-of-an-artificial-multi-observer-deep-neural-network-for-fully-automated-segmentation-of-polycystic-kidneys
#20
Timothy L Kline, Panagiotis Korfiatis, Marie E Edwards, Jaime D Blais, Frank S Czerwiec, Peter C Harris, Bernard F King, Vicente E Torres, Bradley J Erickson
Deep learning techniques are being rapidly applied to medical imaging tasks-from organ and lesion segmentation to tissue and tumor classification. These techniques are becoming the leading algorithmic approaches to solve inherently difficult image processing tasks. Currently, the most critical requirement for successful implementation lies in the need for relatively large datasets that can be used for training the deep learning networks. Based on our initial studies of MR imaging examinations of the kidneys of patients affected by polycystic kidney disease (PKD), we have generated a unique database of imaging data and corresponding reference standard segmentations of polycystic kidneys...
May 26, 2017: Journal of Digital Imaging: the Official Journal of the Society for Computer Applications in Radiology
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