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parietal epithelial cell

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https://www.readbyqxmd.com/read/29776755/neutral-ph-and-low-glucose-degradation-product-dialysis-fluids-induce-major-early-alterations-of-the-peritoneal-membrane-in-children-on-peritoneal-dialysis
#1
Betti Schaefer, Maria Bartosova, Stephan Macher-Goeppinger, Peter Sallay, Peter Vörös, Bruno Ranchin, Karel Vondrak, Gema Ariceta, Ariane Zaloszyc, Aysun K Bayazit, Uwe Querfeld, Rimante Cerkauskiene, Sara Testa, Christina Taylan, Johan VandeWalle, YokChin Yap, Rafael T Krmar, Rainer Büscher, Anne K Mühlig, Dorota Drozdz, Salim Caliskan, Felix Lasitschka, Sahar Fathallah-Shaykh, Enrico Verrina, Günter Klaus, Klaus Arbeiter, Raj Bhayadia, Anette Melk, Philipp Romero, Bradley A Warady, Franz Schaefer, Akos Ujszaszi, Claus Peter Schmitt
The effect of peritoneal dialysates with low-glucose degradation products on peritoneal membrane morphology is largely unknown, with functional relevancy predominantly derived from experimental studies. To investigate this, we performed automated quantitative histomorphometry and molecular analyses on 256 standardized peritoneal and 172 omental specimens from 56 children with normal renal function, 90 children with end-stage kidney disease at time of catheter insertion, and 82 children undergoing peritoneal dialysis using dialysates with low-glucose degradation products...
May 15, 2018: Kidney International
https://www.readbyqxmd.com/read/29705295/evaluation-of-the-dose-response-and-fate-in-the-lung-and-pleura-of-chrysotile-containing-brake-dust-compared-to-chrysotile-or-crocidolite-asbestos-in-a-28-day-quantitative-inhalation-toxicology-study
#2
D M Bernstein, B Toth, R A Rogers, R Sepulveda, P Kunzendorf, J I Phillips, H Ernst
This study provides an understanding of the biokinetics and potential toxicology in the lung and pleura following inhalation of brake-dust (brakes manufactured with chrysotile). The design included a 28-day repeated multi-dose inhalation exposure (6 h/d, 5 d/wk, 4 wks) followed by 28-days without exposure. Fiber control groups included a similar grade chrysotile as used in the brakes and a commercial crocidolite asbestos. Aerosol fiber distributions of the chrysotile and crocidolite were similar (fiber-length > 20 μm/cm3 : Chrysotile-low/high 42/62; Crocidolite-low/high 36/55; WHO-fibers/cm3 : Chrysotile-low/high 192/219; Crocidolite-low/high 211/255)...
April 26, 2018: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29660398/molecular-phenotypes-of-the-human-kidney-myoid-stromal-cells-telocytes-and-myoepithelial-cells
#3
M C Rusu, L Mogoantă, F Pop, M A Dobra
The connective stromal and epithelial compartments of the kidney have regenerative potential and phenotypic flexibility. A few studies have shown that cells appertaining to both compartments can exhibit myoid phenotypes. The purpose of our study was to investigate the myoid pattern of kidney and its association with the kidney niches containing stromal cells/telocytes (SC/TCs). We performed an immunohistochemical study using a panel of endothelial, myoid, mesenchymal and stem/progenitor markers, namely CD31, CD34, CD105 (endoglin), CD117/c-kit, nestin, desmin, α-smooth muscle actin (α-SMA) and the heavy chain of smooth muscle myosin (SMM)...
April 13, 2018: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/29642375/molecular-characterization-of-gastric-epithelial-cells-using-flow-cytometry
#4
Kevin A Bockerstett, Chun Fung Wong, Sherri Koehm, Eric L Ford, Richard J DiPaolo
The ability to analyze individual epithelial cells in the gastric mucosa would provide important insight into gastric disease, including chronic gastritis and progression to gastric cancer. However, the successful isolation of viable gastric epithelial cells (parietal cells, neck cells, chief cells, and foveolar cells) from gastric glands has been limited due to difficulties in tissue processing. Furthermore, analysis and interpretation of gastric epithelial cell flow cytometry data has been difficult due to the varying sizes and light scatter properties of the different epithelial cells, high levels of autofluorescence, and poor cell viability...
April 6, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29534701/recommendations-for-mrna-analysis-of-micro-dissected-glomerular-tufts-from-paraffin-embedded-human-kidney-biopsy-samples
#5
Clemens L Bockmeyer, Juliane Wittig, Karen Säuberlich, Philipp Selhausen, Marc Eßer, Philip Zeuschner, Friedrich Modde, Kerstin Amann, Christoph Daniel
BACKGROUND: Glomeruli are excellent pre-determined natural structures for laser micro-dissection. Compartment-specific glomerular gene expression analysis of formalin-fixed paraffin-embedded renal biopsies could improve research applications. The major challenge for such studies is to obtain good-quality RNA from small amounts of starting material, as applicable for the analysis of glomerular compartments. In this work, we provide data and recommendations for an optimized workflow of glomerular mRNA analysis...
March 13, 2018: BMC Molecular Biology
https://www.readbyqxmd.com/read/29501487/bowman-capsulitis-predicts-poor-kidney-allograft-outcome-in-t-cell-mediated-rejection
#6
Alexander J Gallan, W James Chon, Michelle A Josephson, Patrick N Cunningham, Kammi J Henriksen, Anthony Chang
Acute T cell-mediated rejection (TCMR) is an important cause of renal allograft loss. The Banff classification for tubulointerstitial (type I) rejection is based on the extent of both interstitial inflammation and tubulitis. Lymphocytes may also be present between parietal epithelial cells and Bowman capsules in this setting, which we have termed "capsulitis." We conducted this study to determine the clinical significance of capsulitis. We identified 42 patients from the pathology archives at the University of Chicago with isolated Banff type I TCMR from 2010-2015...
February 28, 2018: Human Pathology
https://www.readbyqxmd.com/read/29498212/the-transcription-factor-dach1-is-essential-for-podocyte-function
#7
Nicole Endlich, Felix Kliewe, Frances Kindt, Katharina Schmidt, Ahmed M Kotb, Nadine Artelt, Maja T Lindenmeyer, Clemens D Cohen, Franziska Döring, Andreas W Kuss, Kerstin Amann, Marcus J Moeller, Nazanin Kabgani, Antje Blumenthal, Karlhans Endlich
Dedifferentiation and loss of podocytes are the major cause of chronic kidney disease. Dach1, a transcription factor that is essential for cell fate, was found in genome-wide association studies to be associated with the glomerular filtration rate. We found that podocytes express high levels of Dach1 in vivo and to a much lower extent in vitro. Parietal epithelial cells (PECs) that are still under debate to be a type of progenitor cell for podocytes expressed Dach1 only at low levels. The transfection of PECs with a plasmid encoding for Dach1 induced the expression of synaptopodin, a podocyte-specific protein, demonstrated by immunocytochemistry and Western blot...
May 2018: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29427515/injury-repair-inflammation-and-metaplasia-in-the-stomach
#8
Anne R Meyer, James R Goldenring
The development of intestinal-type gastric cancer is preceded by the emergence of metaplastic cell lineages in the gastric mucosa. In particular, intestinal metaplasia and spasmolytic polypeptide-expressing metaplasia (SPEM) have been associated with the pathological progression to intestinal-type gastric cancer. The development of SPEM represents a physiological response to damage that recruits reparative cells to sites of mucosal injury. Metaplastic cell lineages are characterized by mucus secretion, adding a protective barrier to the epithelium...
February 10, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29414448/anti-parietal-cell-autoimmunity-is-associated-with-an-accelerated-decline-of-lung-function-in-ipf-patients
#9
Guillaume Beltramo, Gabriel Thabut, Nicolas Peron, Pascale Nicaise, Aurélie Cazes, Marie-Pierre Debray, Audrey Joannes, Yves Castier, Arnaud A Mailleux, Justine Frija, Pauline Pradère, Aurélien Justet, Raphaël Borie, Marie-Christine Dombret, Camille Taille, Michel Aubier, Bruno Crestani
BACKGROUND: Autoantibodies against lung epithelial antigens are often detected in patients with Idiopathic Pulmonary Fibrosis (IPF). Anti-Parietal Cell Antibodies (APCA) target the H+/K+ATPase (proton pump). APCA prevalence and lung H+/K+ATPase expression was never studied in IPF patients. METHODS: We retrospectively collected clinical, lung function and imaging data from APCA positive patients (APCA+IPF) and compared them with APCA negative IPF patients matched on the date of diagnostic assessment...
February 2018: Respiratory Medicine
https://www.readbyqxmd.com/read/29285135/omeprazole-preserves-the-rer-in-chief-cells-and-enhances-re-epithelialization-of-parietal-cells-with-sod-and-aqp-4-up-regulation-in-ethanol-induced-gastritis-rats
#10
Kanchana Kengkoom, Napatara Tirawanchai, Wannee Angkhasirisap, Sumate Ampawong
Gastric mucosal cells, particularly parietal and chief cells, are usually affected by exogenous, and endogenous stimuli-induced gastritis. The integrity of these cells and their alterations are involved in the pathogenesis of numerous gastric disorders. Omeprazole, a gastric acid secretion blocker, is commonly used for gastrointestinal diseases due to its antioxidative stress and anti-inflammatory properties. Little is known regarding how omeprazole modulates the re-epithelialized effect on gastric mucosal cells associated with gastrointestinal disorders...
December 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29276101/cd44-is-required-for-the-pathogenesis-of-experimental-crescentic-glomerulonephritis-and-collapsing-focal-segmental-glomerulosclerosis
#11
Jennifer Eymael, Shagun Sharma, Markus A Loeven, Jack F Wetzels, Fieke Mooren, Sandrine Florquin, Jeroen K Deegens, Brigith K Willemsen, Vikram Sharma, Toin H van Kuppevelt, Marinka A Bakker, Tammo Ostendorf, Marcus J Moeller, Henry B Dijkman, Bart Smeets, Johan van der Vlag
A key feature of glomerular diseases such as crescentic glomerulonephritis and focal segmental glomerulosclerosis is the activation, migration and proliferation of parietal epithelial cells. CD44-positive activated parietal epithelial cells have been identified in proliferative cellular lesions in glomerular disease. However, it remains unknown whether CD44-positive parietal epithelial cells contribute to the pathogenesis of scarring glomerular diseases. Here, we evaluated this in experimental crescentic glomerulonephritis and the transgenic anti-Thy1...
March 2018: Kidney International
https://www.readbyqxmd.com/read/29198839/notch-mediated-sox9-cell-activation-contributes-to-kidney-repair-after-partial-nephrectomy
#12
Qiwang Ma, Yujia Wang, Ting Zhang, Wei Zuo
AIMS: Partial nephrectomy is a surgical technique as an alternative for traditional radical nephrectomy. The advantage of partial nephrectomy technique is nephron-sparing, however, whether the remaining kidney tissue could regenerate the lost nephron is still unknown. The current work is to investigate the kidney tissue repair process and the related cellular and molecular mechanism. MAIN METHODS: We used a novel unilateral partial nephrectomy mouse model to study kidney repair, and focused on a population of Sox9+ progenitor cells to study their pivotal role in the regenerative process...
January 15, 2018: Life Sciences
https://www.readbyqxmd.com/read/29065889/injury-induced-expression-of-caveolar-proteins-in-human-kidney-tubules-role-of-megakaryoblastic-leukemia-1
#13
Krzysztof M Krawczyk, Jennifer Hansson, Helén Nilsson, Katarzyna K Krawczyk, Karl Swärd, Martin E Johansson
BACKGROUND: Caveolae are membrane invaginations measuring 50-100 nm. These organelles, composed of caveolin and cavin proteins, are important for cellular signaling and survival. Caveolae play incompletely defined roles in human kidneys. Induction of caveolin-1/CAV1 in diseased tubules has been described previously, but the responsible mechanism remains to be defined. METHODS: Healthy and atrophying human kidneys were stained for caveolar proteins, (caveolin 1-3 and cavin 1-4) and examined by electron microscopy...
October 24, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/29026873/graft-growth-and-podocyte-dedifferentiation-in-donor-recipient-size-mismatch-kidney-transplants
#14
Janina Müller-Deile, Jan Hinrich Bräsen, Marion Pollheimer, Manfred Ratschek, Hermann Haller, Lars Pape, Mario Schiffer
BACKGROUND: Kidney transplantation is the treatment choice for patients with end-stage renal diseases. Because of good long-term outcome, pediatric kidney grafts are also accepted for transplantation in adult recipients despite a significant mismatch in body size and age between donor and recipient. These grafts show a remarkable ability of adaptation to the recipient body and increase in size in a very short period, presumably as an adaptation to hyperfiltration. METHODS: We investigated renal graft growth as well as glomerular proliferation and differentiation markers Kiel-67, paired box gene 2 and Wilms tumor protein (WT1) expression in control biopsies from different transplant constellations: infant donor for infant recipient, infant donor for child recipient, infant donor for adult recipient, child donor for child recipient, child donor for adult recipient, and adult donor for an adult recipient...
October 2017: Transplantation Direct
https://www.readbyqxmd.com/read/28984696/heterotopic-cutaneous-meningioma-an-unusual-presentation-occurring-in-a-patient-with-a-remote-history-of-intracranial-meningioma
#15
Chibuike Enwereuzo, Luis Moral, Jean M Henneberry
Meningioma is a neoplasm of the meninges, which usually occurs in intracranial sites. Extracranial meningioma has been frequently reported in the sinonasal tract and skull bone, often as extension of intracranial meningiomas. Isolated heterotopic meningioma without contiguous intracranial lesion is extremely rare. A 56-year-old woman presented in December 2015 with 2 firm subcutaneous scalp masses; one in the left lateral (temporal) and the other in the left superior (parietal) region. The clinical impression was that of lipoma...
September 28, 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28928136/endothelial-epas1-deficiency-is-sufficient-to-promote-parietal-epithelial-cell-activation-and-fsgs-in-experimental-hypertension
#16
Yosu Luque, Olivia Lenoir, Philippe Bonnin, Lise Hardy, Anna Chipont, Sandrine Placier, Sophie Vandermeersch, Yi-Chun Xu-Dubois, Blaise Robin, Hélène Lazareth, Michèle Souyri, Léa Guyonnet, Véronique Baudrie, Eric Camerer, Eric Rondeau, Laurent Mesnard, Pierre-Louis Tharaux
FSGS, the most common primary glomerular disorder causing ESRD, is a complex disease that is only partially understood. Progressive sclerosis is a hallmark of FSGS, and genetic tracing studies have shown that parietal epithelial cells participate in the formation of sclerotic lesions. The loss of podocytes triggers a focal activation of parietal epithelial cells, which subsequently form cellular adhesions with the capillary tuft. However, in the absence of intrinsic podocyte alterations, the origin of the pathogenic signal that triggers parietal epithelial cell recruitment remains elusive...
December 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28919801/transforming-growth-factor-%C3%AE-1-smad3-independent-epithelial-mesenchymal-transition-in-type-i-collagen-glomerulopathy
#17
Amanda C Brodeur, Anna M Roberts-Pilgrim, Kimberlee L Thompson, Craig L Franklin, Charlotte L Phillips
The glomerulofibrotic Col1a2-deficient mouse model demonstrates glomerular homotrimeric type I collagen deposition in mesangial and subendothelial spaces. In this report, we investigate the role of transforming growth factor β1 (TGF-β1) in myofibroblast activation and epithelial-mesenchymal transition (EMT) in this glomerulopathy. Immunohistochemical analyses of glomerular α-sma, desmin, vimentin, and proliferating cell nuclear antigen demonstrated parietal epithelial cell proliferation and EMT in late stages of the glomerulopathy in the Col1a2-deficient mice...
2017: International Journal of Nephrology and Renovascular Disease
https://www.readbyqxmd.com/read/28919490/alcohol-exposure-induces-chick-craniofacial-bone-defects-by-negatively-affecting-cranial-neural-crest-development
#18
Ping Zhang, Guang Wang, Zhuangling Lin, Yushi Wu, Jing Zhang, Meng Liu, Kenneth Ka Ho Lee, Manli Chuai, Xuesong Yang
Excess alcohol consumption during pregnancy could lead to fetal alcohol syndrome (FAS). However, the molecular mechanism leading to craniofacial abnormality, a feature of FAS, is still poorly understood. The cranial neural crest cells (NCCs) contribute to the formation of the craniofacial bones. Therefore, NCCs exposed to ethanol was investigated - using chick embryos and in vitro explant culture as experimental models. We demonstrated that exposure to 2% ethanol induced craniofacial defects, which includes parietal defect, in the developing chick fetus...
November 5, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28913845/urinary-wt1-positive-cells-as-a-non-invasive-biomarker-of-crescent-formation
#19
T Fujita, T Sofue, M Moritoki, Y Nishijima, Y Tokuhara, H Wakisaka, Y Kushida, R Haba, H Ohsaki
OBJECTIVE: The purpose of this study was to assess the relationship between urinary WT1-positive cells (podocytes and active parietal epithelial cells) and WT1-positive cells in renal biopsy to investigate whether urinary WT1-positive cells are useful for detection of crescent formation. METHODS: Fifty-two patients with kidney disease were investigated (15 cases with crescentic lesions and 37 cases with non-crescentic lesions) for immunoenzyme staining using anti-WT1 antibody for urine cytology and renal biopsy...
September 15, 2017: Cytopathology: Official Journal of the British Society for Clinical Cytology
https://www.readbyqxmd.com/read/28881583/troy-is-expressed-in-human-stomach-mucosa-and-a-novel-putative-prognostic-marker-of-intestinal-type-gastric-cancer
#20
Franziska Wilhelm, Christine Böger, Sandra Krüger, Hans-Michael Behrens, Christoph Röcken
Epithelial stem cells of gastrointestinal tissues are characterized and controlled by an active Wnt signaling. Recently, the Wnt target gene Troy has been proposed as a neoplastic marker in the murine intestine. In this study, we explored the putative tumor biological significance of Troy in humans by using immunohistochemistry (104 cases), quantitative RT-PCR (50 cases) and cell culture experiments (MKN45, MKN74). In the non-neoplastic gastric mucosa, Troy was expressed by Muc5AC-positive foveolar epithelium, parietal cells, chief cells and cells of the intestinal metaplasia...
August 1, 2017: Oncotarget
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