keyword
MENU ▼
Read by QxMD icon Read
search

Podocytes

keyword
https://www.readbyqxmd.com/read/29244787/loss-of-podocalyxin-causes-a-novel-syndromic-type-of-congenital-nephrotic-syndrome
#1
Hee Gyung Kang, Moses Lee, Kyoung Boon Lee, Michael Hughes, Bo Sang Kwon, Sangmoon Lee, Kelly M McNagny, Yo Han Ahn, Jung Min Ko, Il-Soo Ha, Murim Choi, Hae Il Cheong
Many cellular structures directly imply specific biological functions. For example, normal slit diaphragm structures that extend from podocyte foot processes ensure the filtering function of renal glomeruli. These slits are covered by a number of surface proteins, such as nephrin, podocin, podocalyxin and CD2AP. Here we report a human patient presenting with congenital nephrotic syndrome, omphalocele and microcoria due to two loss-of-function mutations in PODXL, which encodes podocalyxin, inherited from each parent...
December 15, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/29242313/dissection-of-glomerular-transcriptional-profile-in-patients-with-diabetic-nephropathy-srgap2a-protects-podocyte-structure-and-function
#2
Yu Pan, Song Jiang, Qing Hou, Dandan Qiu, Jingsong Shi, Ling Wang, Zhaohong Chen, Mingchao Zhang, Aiping Duan, Weisong Qin, Ke Zen, Zhihong Liu
Podocytes play a pivotal role in maintaining glomerular filtration function through their interdigitated foot processes. However, the mechanisms that govern the podocyte cytoskeletal rearrangement still remain unclear. Through analyzing transcriptional profile of renal biopsy from diabetic nephropathy (DN) patients and control donors, we identify Slit-Robo GTP activating protein 2a (SRGAP2a) as one of the main 'hub' genes that are strongly associated with proteinuria and glomerular filtration in type 2 DN patients...
December 14, 2017: Diabetes
https://www.readbyqxmd.com/read/29241625/vinculin-is-required-to-maintain-glomerular-barrier-integrity
#3
Franziska Lausecker, Xuefei Tian, Kazunori Inoue, Zhen Wang, Christopher E Pedigo, Hossam Hassan, Chang Liu, Margaret Zimmer, Stephanie Jinno, Abby L Huckle, Hellyeh Hamidi, Robert S Ross, Roy Zent, Christoph Ballestrem, Rachel Lennon, Shuta Ishibe
Cell-matrix interactions and podocyte intercellular junctions are key for maintaining the glomerular filtration barrier. Vinculin, a cytoplasmic protein, couples actin filaments to integrin-mediated cell-matrix adhesions and to cadherin-based intercellular junctions. Here, we examined the role of vinculin in podocytes by the generation of a podocyte-specific knockout mouse. Mice lacking podocyte vinculin had increased albuminuria and foot process effacement following injury in vivo. Analysis of primary podocytes isolated from the mutant mice revealed defects in cell protrusions, altered focal adhesion size and signaling, as well as impaired cell migration...
December 11, 2017: Kidney International
https://www.readbyqxmd.com/read/29238469/the-role-of-sirolimus-in-proteinuria-in-diabetic-nephropathy-rats
#4
JinJun Wang, ZiQiang Xu, BiCheng Chen, ShaoLing Zheng, Peng Xia, Yong Cai
Objectives: The aim of this study was to observe the impact of sirolimus on proteinuria in streptozotocin (STZ) induced diabetic rats. Materials and Methods: Rats were given a single injection of STZ to induce diabetic rat model. Rats' 24 hr urine was collected to test, urinary and the kidney tissues were harvested at the 8th and 20th weeks, respectively. Podocyte morphological changes were examined by electron microscopy and the ZO-1, podocin expressions in kidneys were detected by immunohistochemistry; the protein levels of Raptor and pS6 were measured by Western blot assay...
December 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/29232382/charting-the-transcriptional-landscape-of-cells-of-renin-lineage-following-podocyte-depletion
#5
Aaron D McClelland, Julia Lichtnekert, Diana G Eng, Jeffrey W Pippin, Kenneth W Gross, Sina A Gharib, Stuart J Shankland
Renin producing cells of the juxtaglomerulus, herein called cells of renin lineage (CoRL), have garnered recent interest for their propensity to act as a progenitor source for various kidney cell types including podocytes. Despite recent advances, the process of transdifferentiation of CoRL to podocytes is poorly understood. In this study, we employed a transgenic reporter mouse line which permanently labels CoRL with ZsGreen fluorescent protein, allowing for isolation by fluorescence-activated cell sorting...
2017: PloS One
https://www.readbyqxmd.com/read/29230705/crosstalk-between-tlr4-and-notch1-signaling-in-the-iga-nephropathy-during-inflammatory-response
#6
Xuxiang Sheng, Xiaoyan Zuo, Xihui Liu, Yang Zhou, Xia Sun
PURPOSE: IgA nephropathy (IgAN) is an immune complex-mediated disease involved in the kidney disease. Recent studies have revealed that Notch signaling-related genes are aberrantly expressed in various cell types and maybe associate with inflammation-induced carcinogenesis. The aim of our study was to investigate the function of Notch1 in the inflammatory response of IgAN. METHODS: The expression of Notch1, Jagged1 and NICD1 in 52 IgAN renal tissues and 20 control renal tissues was first determined using quantitative real-time PCR and Western blot...
December 11, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/29227285/shifts-in-podocyte-histone-h3k27me3-regulate-mouse-and-human-glomerular-disease
#7
Syamantak Majumder, Karina Thieme, Sri N Batchu, Tamadher A Alghamdi, Bridgit B Bowskill, M Golam Kabir, Youan Liu, Suzanne L Advani, Kathryn E White, Laurette Geldenhuys, Karthik K Tennankore, Penelope Poyah, Ferhan S Siddiqi, Andrew Advani
Histone protein modifications control fate determination during normal development and dedifferentiation during disease. Here, we set out to determine the extent to which dynamic changes to histones affect the differentiated phenotype of ordinarily quiescent adult glomerular podocytes. To do this, we examined the consequences of shifting the balance of the repressive histone H3 lysine 27 trimethylation (H3K27me3) mark in podocytes. Adriamycin nephrotoxicity and subtotal nephrectomy (SNx) studies indicated that deletion of the histone methylating enzyme EZH2 from podocytes decreased H3K27me3 levels and sensitized mice to glomerular disease...
December 11, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29224013/response-of-renal-podocytes-to-excessive-hydrostatic-pressure-a-pathophysiologic-cascade-in-a-malignant-hypertension-model
#8
Ramzia Abu Hamad, Sylvia Berman, Yafit Hachmo, Moshe Stark, Fadia Hasan, Keren Doenyas-Barak, Shai Efrati
BACKGROUND/AIMS: Renal injuries induced by increased intra-glomerular pressure coincide with podocyte detachment from the glomerular basement membrane (GBM). In previous studies, it was demonstrated that mesangial cells have a crucial role in the pathogenesis of malignant hypertension. However, the exact pathophysiological cascade responsible for podocyte detachment and its relationship with mesangial cells has not been fully elucidated yet and this was the aim of the current study. METHODS: Rat renal mesangial or podocytes were exposed to high hydrostatic pressure in an in-vitro model of malignant hypertension...
December 7, 2017: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/29223856/modulation-of-glutathione-peroxidase-activity-by-age-dependent-carbonylation-in-glomeruli-of-diabetic-mice
#9
Tanja Wiedenmann, Nadine Dietrich, Thomas Fleming, Sandro Altamura, Leo E Deelman, Rob H Henning, Martina U Muckenthaler, Peter P Nawroth, Hans-Peter Hammes, Andreas H Wagner, Markus Hecker
AIMS: Low levels of reactive oxygen species and resulting oxidative protein modifications may play a beneficial role in cellular function under stress conditions. Here we studied the influence of age-dependent protein carbonylation on expression and activity of the anti-oxidative selenoenzyme glutathione peroxidase (GPx) in insulin-deficient Ins2Akita mice and type 2 diabetic obese db/db mice in context of diabetic nephropathy. METHODS: Protein carbonylation, GPx expression and activity were examined in kidney tissue and lysates by common histological and protein biochemical methods...
November 22, 2017: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/29218112/triptolide-protects-podocytes-from-tgf-%C3%AE-induced-injury-by-preventing-mir-30-downregulation
#10
Qianqian Yang, Mengjie Sun, Ying Chen, Yuqiu Lu, Yuting Ye, Hui Song, Xiaodong Xu, Shaolin Shi, Jinquan Wang
Triptolide is known to have a strong anti-proteinuric effect through direct protection of podocytes from injury and is used to treat glomerular diseases. However, the mechanism underlying its protective effect on podocytes remains elusive. MiR-30 family has recently been shown to be essential for structural and functional homeostasis of podocytes but is downregulated by injurious factors, leading to podocyte injury. In the present study, we explore whether Triptolide protects podocytes through preventing miR-30 downregulation...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/29217578/a-small-molecule-inhibitor-of-trpc5-ion-channels-suppresses-progressive-kidney-disease-in-animal-models
#11
Yiming Zhou, Philip Castonguay, Eriene-Heidi Sidhom, Abbe R Clark, Moran Dvela-Levitt, Sookyung Kim, Jonas Sieber, Nicolas Wieder, Ji Yong Jung, Svetlana Andreeva, Jana Reichardt, Frank Dubois, Sigrid C Hoffmann, John M Basgen, Mónica S Montesinos, Astrid Weins, Ashley C Johnson, Eric S Lander, Michael R Garrett, Corey R Hopkins, Anna Greka
Progressive kidney diseases are often associated with scarring of the kidney's filtration unit, a condition called focal segmental glomerulosclerosis (FSGS). This scarring is due to loss of podocytes, cells critical for glomerular filtration, and leads to proteinuria and kidney failure. Inherited forms of FSGS are caused by Rac1-activating mutations, and Rac1 induces TRPC5 ion channel activity and cytoskeletal remodeling in podocytes. Whether TRPC5 activity mediates FSGS onset and progression is unknown. We identified a small molecule, AC1903, that specifically blocks TRPC5 channel activity in glomeruli of proteinuric rats...
December 8, 2017: Science
https://www.readbyqxmd.com/read/29214442/shiga-toxin-triggers-endothelial-and-podocyte-injury-the-role-of-complement-activation
#12
REVIEW
Carlamaria Zoja, Simona Buelli, Marina Morigi
Shiga toxin (Stx)-producing Escherichia coli (STEC) is the offending agent in post-diarrhea-associated hemolytic uremic syndrome (HUS), a disorder characterized by thrombocytopenia, microangiopathic hemolytic anemia, and acute kidney failure, with thrombi occluding the renal microvasculature. Endothelial dysfunction has been recognized as the trigger event in the development of microangiopathic processes. Glomerular endothelial cells are susceptible to the toxic effects of Stxs that, via nuclear factor kappa B (NF-κB) activation, induce the expression of genes encoding for adhesion molecules and chemokines, culminating in leukocyte adhesion and platelet thrombus formation on the activated endothelium...
December 6, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/29214160/mir-217-is-a-useful-diagnostic-biomarker-and-regulates-human-podocyte-cells-apoptosis-via-targeting-tnfsf11-in-membranous-nephropathy
#13
Jing Li, Bin Liu, Hen Xue, Qiao Qiao Zhou, Ling Peng
Background: MicroRNAs have recently been verified as useful diagnostic biomarkers in various diseases. In this study, we investigated whether miR-217 is a useful diagnostic biomarker and the possible pathological mechanism of miR-217 in this disease. Methods: Patients with focal segmental glomerulosclerosis (FSGS), membranous nephropathy (MN), and diabetic nephropathy (DN) and control patients were enrolled in this study. The miR-217 inhibitor and mimics were transfected into human podocyte cells to investigate the pathological mechanism of miR-217 in this disease...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29212948/elevated-urinary-creld2-is-associated-with-endoplasmic-reticulum-stress-mediated-kidney-disease
#14
Yeawon Kim, Sun-Ji Park, Scott R Manson, Carlos Af Molina, Kendrah Kidd, Heather Thiessen-Philbrook, Rebecca J Perry, Helen Liapis, Stanislav Kmoch, Chirag R Parikh, Anthony J Bleyer, Ying Maggie Chen
ER stress has emerged as a signaling platform underlying the pathogenesis of various kidney diseases. Thus, there is an urgent need to develop ER stress biomarkers in the incipient stages of ER stress-mediated kidney disease, when a kidney biopsy is not yet clinically indicated, for early therapeutic intervention. Cysteine-rich with EGF-like domains 2 (CRELD2) is a newly identified protein that is induced and secreted under ER stress. For the first time to our knowledge, we demonstrate that CRELD2 can serve as a sensitive urinary biomarker for detecting ER stress in podocytes or renal tubular cells in murine models of podocyte ER stress-induced nephrotic syndrome and tunicamycin- or ischemia-reperfusion-induced acute kidney injury (AKI), respectively...
December 7, 2017: JCI Insight
https://www.readbyqxmd.com/read/29208058/low-protein-diet-supplemented-with-ketoacids-delays-the-progression-of-diabetic-nephropathy-by-inhibiting-oxidative-stress-in-the-kkay-mice-model
#15
Dongmei Liu, Ming Wu, Lin Li, Xiang Gao, Bo Yang, Shuqin Mei, Lili Fu, Changlin Mei
Diabetic nephropathy (DN) is a major cause of chronic kidney disease. We aimed to investigate the effect of the low-protein diets (LPD) supplemented with ketoacids (LPD+KA) in KKAy mice, an early type 2 DN model. KKAy mice were treated with normal protein diet (NPD), LPD or LPD+KA from 12 to 24 weeks of age. A period of 12-week treatment with LPD significantly reduced albuminuria as compared with that observed after NPD treatment. Treatment with LPD+KA further reduced albuminuria as compared with that observed with LPD treatment alone...
December 6, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/29207635/socs2-overexpression-alleviates-diabetic-nephropathy-in-rats-by-inhibiting-the-tlr4-nf-%C3%AE%C2%BAb-pathway
#16
Suxia Yang, Junwei Zhang, Shiying Wang, Xinxin Zhao, Jun Shi
Suppressor of cytokine signaling 2 (SOCS2) was reported to be involved in the development of Diabetic Nephropathy (DN). However, its underlying mechanism remains undefined. Western blot was carried out to determine the expressions of SOCS2, Toll-like receptors 4 (TLR4) and nuclear factor kappa B (NF-κB) pathway-related proteins in DN patients, streptozotocin (STZ)-induced DN rats and high glucose (HG)-stimulated podocytes. The effects of SOCS2 overexpression on renal injury, the inflammatory cytokines production, renal pathological changes, apoptosis and the TLR4/NF-κB pathway in DN rats or HG-stimulated podocytes were investigated...
October 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/29207011/astragaloside-iv-prevents-kidney-injury-caused-by-iatrogenic-hyperinsulinemia-in-a-streptozotocin%C3%A2-induced-diabetic-rat-model
#17
Ke-Qiang He, Wei-Zu Li, Xiao-Qing Chai, Yan-Yan Yin, Yan Jiang, Wei-Ping Li
Diabetic patients are able to manage their blood glucose with exogenous insulin but, ultimately, remain at risk of diabetic nephropathy (DN). Long‑term use of insulin may lead to iatrogenic hyperinsulinemia, which has been suggested to cause kidney injury. However, there are no effective interventions for iatrogenic hyperinsulinemia leading to kidney damage. In the present paper, the hypothesis that astragaloside IV (AS‑IV), a novel saponin purified from Astragalus membranaceus (Fisch) Bunge, may prevent DN in iatrogenic hyperinsulinemic diabetic rats through antioxidative and anti‑inflammatory mechanisms was investigated...
November 17, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29205354/podocytes-are-new-cellular-targets-of-hemoglobin-mediated-renal-damage
#18
Alfonso Rubio-Navarro, Maria Dolores Sanchez-Niño, Melania Guerrero-Hue, Cristina García-Caballero, Eduardo Gutiérrez, Claudia Yuste, Ángel Sevillano, Manuel Praga, Javier Egea, Elena Román, Pablo Cannata, Rosa Ortega, Isabel Cortegano, Belén de Andrés, María Luisa Gaspar, Susana Cadenas, Alberto Ortiz, Jesús Egido, Juan Antonio Moreno
Recurrent and massive intravascular hemolysis induces proteinuria, glomerulosclerosis and progressive impairment of renal function, suggesting podocyte injury. However, the effects of hemoglobin (Hb) on podocytes remain unexplored. Our results show that cultured human podocytes or podocytes isolated from murine glomeruli bound and endocytosed Hb through the megalin-cubilin receptor system, thus resulting in increased intracellular Hb catabolism, oxidative stress, activation of the intrinsic apoptosis pathway and altered podocyte morphology, with decreased expressionof the slit diaphragm proteins nephrin and synaptopodin...
December 4, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/29198839/sox9-activation-is-involved-in-tubule-repair-after-unilateral-partial-nephrectomy
#19
Qiwang Ma, Yujia Wang, Wei Zuo
AIMS: Tubule repair has been noticed after kidney tissue damage, however the cellular mechanism behind remains unclear. Here we successfully constructed a mouse unilateral partial nephrectomy model mimicking renal carcinoma surgery, and further investigated whether this procedure triggered regenerative action. MAIN METHODS: We used the unilateral partial nephrectomy model to study kidney repair. Kidney function after nephrectomy was measured using creatinine and urea nitrogen assay kit...
November 30, 2017: Life Sciences
https://www.readbyqxmd.com/read/29198665/isolated-crystalloid-podocytopathy-with-focal-segmental-glomerulosclerosis-in-renal-allograft-an-unusual-presentation-of-post-transplant-monoclonal-gammopathy-of-renal-significance-a-case-report
#20
A-H Yang, C-C Loong, N-C Lin, C-Y Yang
BACKGROUND: Monoclonal gammopathy of renal significance denotes a spectrum of hematologic disorders that cause direct or indirect renal damage. CASE PRESENTATION: A 51-year-old man had received a living-donor kidney transplant from his wife in 2008. He had gradual increased proteinuria 4 years later. His renal biopsy results revealed cytoplasmic crystalloid inclusions in the podocytes. No crystalloid inclusion was found in other renal cells. Despite that immunofluorescent examination failed to show light-chain deposition, the serum immuno-electrophoresis revealed monoclonal immunoglobulin-Gκ...
December 2017: Transplantation Proceedings
keyword
keyword
61248
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"