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Mesangial cells

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https://www.readbyqxmd.com/read/28320530/single-cell-rna-sequence-analysis-of-mouse-glomerular-mesangial-cells-uncovers-mesangial-cell-essential-genes
#1
Yuqiu Lu, Yuting Ye, Qianqian Yang, Shaolin Shi
Mesangial cells are essential for the structure and function of glomeruli, but the mechanisms underlying these roles are not well understood. Here, we performed a single-cell RNA-sequence (RNA-seq) analysis of mouse mesangial cells using the Fluidigm C1 platform. We found that gene expression in individual mesangial cells was tremendously heterogeneous, with mean correlation coefficients of 0.20, and most mesangial genes were actually expressed in only a portion of mesangial cells and are therefore presumably dispensable...
March 17, 2017: Kidney International
https://www.readbyqxmd.com/read/28320103/paeoniflorin-ameliorates-ages-induced-mesangial-cell-injury-through-inhibiting-rage-mtor-autophagy-pathway
#2
Juan Chen, Di Zhao, Maomao Zhu, Minghua Zhang, Xuefeng Hou, Wenbo Ding, Shuai Sun, Weiquan Bu, Liang Feng, Shiping Ma, Xiaobin Jia
Glomerular mesangial cell plays a vital role in diabetic nephropathy (DN). Recent research has demonstrated that autophagy involved in the development of DN. Paeoniflorin (PF), a monoterpene glucoside, has been proved to attenuate advanced glycation end products (AGEs)-induced mesangial cell injury. However, the regulatory mechanism of PF on autophagy in mesangial cell remains unclear. The aim of this study was to explore the effect of PF on autophagy in AGEs-induced mesangial cell dysfunction. In this study, the leakage of the lactic dehydrogenase (LDH) into the extracellular medium was measured by LDH kit...
March 18, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28315934/gas1-expression-in-parietal-cells-of-bowman-s-capsule-in-experimental-diabetic-nephropathy
#3
Brenda I Luna-Antonio, Rafael Rodriguez-Muñoz, Carmen Namorado-Tonix, Paula Vergara, Jose Segovia, Jose L Reyes
Gas1 (Growth Arrest-Specific 1) is a pleiotropic protein with novel functions including anti-proliferative and proapoptotic activities. In the kidney, the expression of Gas1 has been described in mesangial cells. In this study, we described that renal parietal cells of Bowman's capsule (BC) and the distal nephron cells also express Gas1. The role of Gas1 in the kidney is not yet known. There is a subpopulation of progenitor cells in Bowman's capsule with self-renewal properties which can eventually differentiate into podocytes as a possible mechanism of regeneration in the early stages of diabetic nephropathy...
March 18, 2017: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/28298362/negative-regulation-of-smad1-pathway-and-collagen-iv-expression-by-store-operated-ca2-entry-in-glomerular-mesangial-cells
#4
Peiwen Wu, Yuezhong Ren, Yuhong Ma, Yanxia Wang, Hui Jiang, Sarika Chaudhari, Mark E Davis, Jonathan E Zuckerman, Rong Ma
Collagen IV (Col IV) is a major component of expanded glomerular extracellular matrix in diabetic nephropathy and Smad1 is a key molecule regulating Col IV expression in mesangial cells (MCs). The present study was conducted to determine if Smad1 pathway and Col IV protein abundance were regulated by store-operated Ca2+ entry (SOCE). In cultured human MCs, pharmacological inhibition of SOCE significantly increased the total amount of Smad1 protein. Activation of SOCE blunted high glucose-increased Smad1 protein content...
March 15, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28295247/targeting-c3a-c5a-receptors-inhibits-human-mesangial-cell-proliferation-and-alleviates-iga-nephropathy-in-mice
#5
Ying Zhang, Xianli Yan, Ting Zhao, Qihe Xu, Qi Peng, Ruimin Hu, Songxia Quan, Yali Zhou, Guolan Xing
Complement activation has a deep pathogenic influence in IgA nephropathy (IgAN). C3a and C5a, small cleavage fragments generated by complement activation, are key mediators of inflammation. The fragments exert broad pro-inflammatory effects by binding to specific receptors (C3aR and C5aR, respectively). However, no studies thus far have investigated the effects of C3a, C5a and their receptors on IgAN. We observed that C3aR and C5aR antagonists repressed IgA-induced cell proliferation and IL-6 and MCP-1 production in cultured human mesangial cells (HMCs)...
March 15, 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28293726/inflammation-in-iga-nephropathy
#6
Thomas Rauen, Jürgen Floege
Immunoglobulin A nephropathy (IgAN) is the most frequently occurring primary glomerulonephritis in Caucasian and Asian populations. Nonetheless, therapeutic recommendations are based on weak evidence, large controlled trials are scarce and, in particular, the additional value of immunosuppression beyond comprehensive supportive measures is not well-established. The use of immunosuppressants is supported by experimental insights into IgAN pathogenesis that suggest an autoimmune component in disease development...
March 14, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28292877/the-effects-of-dual-ppar%C3%AE-%C3%AE-agonism-compared-with-ace-inhibition-in-the-btbrob-ob-mouse-model-of-diabetes-and-diabetic-nephropathy
#7
Anette Ericsson, Pernilla Tonelius, Mark Lal, Alan Sabirsh, Gerhard Böttcher, Lena William-Olsson, Maria Strömstedt, Camilla Johansson, Gina Hyberg, Sofia Tapani, Ann-Cathrine Jönsson-Rylander, Robert Unwin
The leptin-deficient BTBRob/ob mouse develops progressive albuminuria and morphological lesions similar to human diabetic nephropathy (DN), although whether glomerular hyperfiltration, a recognized feature of early DN that may contribute to renal injury, also occurs in this model is not known. Leptin replacement has been shown to reverse the signs of renal injury in this model, but in contrast, the expected renoprotection by angiotensin-converting enzyme (ACE) inhibition in BTBRob/ob mice seems to be limited...
March 2017: Physiological Reports
https://www.readbyqxmd.com/read/28286065/polydatin-promotes-nrf2-are-anti-oxidative-pathway-through-activating-ckip-1-to-resist-hg-induced-up-regulation-of-fn-and-icam-1-in-gmcs-and-diabetic-mice-kidneys
#8
Wenyan Gong, Jie Li, Zhiquan Chen, Junying Huang, Qiuhong Chen, Weibin Cai, Peiqing Liu, Heqing Huang
Our previous study indicated that Casein kinase 2 interacting protein-1 (CKIP-1) could promote the activation of the nuclear factor E2-related factor 2 (Nrf2)/ antioxidant response element (ARE) pathway, playing a significant role in inhibiting the fibrosis of diabetic nephropathy (DN). Polydatin (PD) has been shown to possess strong resistance effects on renal fibrosis which is closely related to activating the Nrf2/ARE pathway, too. Whereas, whether PD could resist DN through regulating CKIP-1 and consequently promoting the activation of Nrf2-ARE pathway needs further investigation...
March 9, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28256116/lobeglitazone-a-novel-peroxisome-proliferator-activated-receptor-%C3%AE-agonist-attenuates-renal-fibrosis-caused-by-unilateral-ureteral-obstruction-in-mice
#9
Kwi Hyun Bae, Jung Beom Seo, Yun A Jung, Hye Young Seo, Sun Hee Kang, Hui Jeon Jeon, Jae Man Lee, Sungwoo Lee, Jung Guk Kim, In Kyu Lee, Gwon Soo Jung, Keun Gyu Park
BACKGROUND: Renal tubulointerstitial fibrosis is a common feature of the final stage of nearly all cause types of chronic kidney disease. Although classic peroxisome proliferator-activated receptor γ (PPARγ) agonists have a protective effect on diabetic nephropathy, much less is known about their direct effects in renal fibrosis. This study aimed to investigate possible beneficial effects of lobeglitazone, a novel PPARγ agonist, on renal fibrosis in mice. METHODS: We examined the effects of lobeglitazone on renal tubulointerstitial fibrosis in unilateral ureteral obstruction (UUO) induced renal fibrosis mice...
February 28, 2017: Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28237991/rapamycin-enhances-repressed-autophagy-and-attenuates-aggressive-progression-in-a-rat-model-of-iga-nephropathy
#10
Di Liu, Yexin Liu, Guochun Chen, Liyu He, Chengyuan Tang, Chang Wang, Danyi Yang, Huiqiong Li, Zheng Dong, Hong Liu
BACKGROUND: IgA nephropathy (IgAN) has been considered to be the most frequent form of primary glomerulonephritis that occurs worldwide with a variety of factors involved in its occurrence and development. The impact of autophagy in IgAN, however, remains partially unclear. This study was designed to investigate the effects of rapamycin in an IgAN model. METHOD: After establishing an IgAN rat model, SD rats were divided into 4 groups: control, control + rapamycin, IgAN, IgAN + rapamycin...
February 25, 2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/28237649/protein-kinase-ck2%C3%AE-catalytic-subunit-ameliorates-diabetic-renal-inflammatory-fibrosis-via-nf-%C3%AE%C2%BAb-signaling-pathway
#11
Junying Huang, Zhiquan Chen, Jie Li, Qiuhong Chen, Jingyan Li, Wenyan Gong, Jiani Huang, Peiqing Liu, Heqing Huang
Activation of casein kinase 2 (CK2) is closely linked to the body disturbance of carbohydrate metabolism and inflammatory reaction. The renal chronic inflammatory reaction in the setting of diabetes is one of the important hallmarks of diabetic renal fibrosis. However, it remains unknown whether CK2 influences the process of diabetic renal fibrosis. The current study is aimed to investigate if CK2α ameliorates renal inflammatory fibrosis in diabetes via NF-κB pathway. To explore potential regulatory mechanism of CK2α, the expression and activity of CK2α, which were studied by plasmid transfection, selective inhibitor, small-interfering RNA (siRNA) and adenovirus infection in vitro or in vivo, were analyzed by means of western blotting (WB), dual luciferase reporter assay and electrophoretic mobility shift assay (EMSA)...
February 22, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28230484/plasticity-of-mesenchymal-stem-cells-mscs-in-mesangial-repair-the-crucial-role-of-electron-microscopy-em-monitoring-and-understanding-the-process
#12
Guillermo A Herrera, Jiamin Teng, Chun Zeng, Elba A Turbat-Herrera
No abstract text is available yet for this article.
January 2017: Ultrastructural Pathology
https://www.readbyqxmd.com/read/28229902/impact-of-high-glucose-and-ages-on-cultured-kidney-derived-cells-effects-on-cell-viability-lysosomal-enzymes-and-effectors-of-cell-signaling-pathways
#13
Giovani B Peres, Nestor Schor, Yara M Michelacci
We have previously reported decreased expression and activities of lysosomal cathepsins B and L in diabetic kidney. Relevant morphological changes were observed in proximal tubules, suggesting that these cells are implicated in the early stages of the disease. The aim of the present study was to investigate the mechanisms that lead to these changes. The effects of high glucose (HG) and advanced glycation end products (AGEs) on cell viability, lysosomal enzymes and other effectors of cell signaling of cultured kidney cells were studied...
April 2017: Biochimie
https://www.readbyqxmd.com/read/28228399/accumulation-of-worn-out-gbm-material-substantially-contributes-to-mesangial-matrix-expansion-in-diabetic-nephropathy
#14
Wilhelm Kriz, Jana Löwen, Giuseppina Federico, Jacob van den Born, Elisabeth Gröne, Hermann-Josef Gröne
Thickening of the glomerular basement membrane (GBM) and expansion of the mesangial matrix are hallmarks of diabetic nephropathy (DN) generally considered to emerge from different sites of overproduction; GBM components from podocytes and mesangial matrix from mesangial cells. Re-evaluation of 918 biopsies with DN revealed strong evidence that these mechanisms are connected to each other, wherein excess GBM components fail to undergo degradation and are deposited in the mesangium. These data do not exclude that also mesangial cells synthesize components that contribute to the accumulation of matrix in the mesangium...
February 22, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28222433/high-glucose-induces-mouse-mesangial-cell-overproliferation-via-inhibition-of-hydrogen-sulfide-synthesis-in-a-tlr-4-dependent-manner
#15
Tao Ding, Wei Chen, Juan Li, Jiarong Ding, Xiaobin Mei, Haiyan Hu
BACKGROUND/AIMS: Overproliferation of mesangial cells was believed to play an important role in the progress of diabetic nephropathy, one of the primary complications of diabetes. Hydrogen sulfide (H2S), a well-known and pungent gas with the distinctive smell of rotten eggs, was discovered to play a protective role in diabetic nephropathy. METHODS: MTT assay was used to examine the viability of mesangial cells. Small interfering RNA was used to knock down the expression of TLR4 while specific inhibitor LY294002 to suppress the function of PI3K...
February 22, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28208683/plasma-gelsolin-induced-glomerular-fibrosis-via-the-tgf-%C3%AE-1-smads-signal-transduction-pathway-in-iga-nephropathy
#16
Lei Zhang, Changsong Han, Fei Ye, Yan He, Yinji Jin, Tianzhen Wang, Yiqi Wu, Yang Jiang, Fengmin Zhang, Xiaoming Jin
Glomerular fibrosis has been shown to be closely related to the progression and prognosis of IgA nephropathy (IgAN). However, mechanism underlying IgAN glomerular fibrosis remains unclear. Recently, our study showed that plasma gelsolin (pGSN) was decreased in the serum of an IgAN mouse model and that pGSN deposition was found in the glomeruli. Another cytokine, TGF-β1, which is closely related to glomerular fibrosis, was also found to be highly expressed in the glomeruli. In the present study, we report that pGSN induces glomerular fibrosis through the TGF-β1/Smads signal transduction pathway...
February 12, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28205354/mini-review-a-unique-case-of-crescentic-c3-glomerulonephritis
#17
Dharmenaan Palamuthusingam, Murty Mantha, Kimberley Oliver, Ketan Bavishi, Shyam Dheda
Kidney involvement is an under-recognized complication of non-Hodgkin lymphomas. They occur in a variety of mechanisms and differ widely in their clinical presentation. We take this opportunity to report a case of a 65 year-old man who developed a rapidly progressive glomerulonephritis within days after completing his first cycle of R-CHOP (Rituximab, Cyclophosphamide, Doxorubicin, Vincristine, Prednisolone) chemotherapy for newly diagnosed mantle cell lymphoma. He was odematous, hypertensive, oliguric with nephrotic range proteinuria and an active urine sediment...
March 2017: Nephrology
https://www.readbyqxmd.com/read/28195240/mir302-regulates-snai1-expression-to-control-mesangial-cell-plasticity
#18
L De Chiara, D Andrews, A Watson, G Oliviero, G Cagney, J Crean
Cell fate decisions are controlled by the interplay of transcription factors and epigenetic modifiers, which together determine cellular identity. Here we elaborate on the role of miR302 in the regulation of cell plasticity. Overexpression of miR302 effected silencing of the TGFβ type II receptor and facilitated plasticity in a manner distinct from pluripotency, characterized by increased expression of Snail. miR302 overexpressing mesangial cells also exhibited enhanced expression of EZH2 coincident with Snail upregulation...
February 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28194406/curcumin-ameliorates-diabetic-nephropathy-by-suppressing-nlrp3-inflammasome-signaling
#19
Miaomiao Lu, Nanchang Yin, Wei Liu, Xiangfei Cui, Shuo Chen, Ermin Wang
Diabetic nephropathy (DN) is the leading cause of end-stage renal disease, partly because of the lack of effective treatments for DN. Curcumin has been shown to exert strong antifibrotic effects in DN, but the underlying mechanisms are not well characterized. In this study, we sought to determine the effects of curcumin on diabetic renal disease in db/db mice and characterize the underlying mechanism of action. We administered curcumin to db/db mice for 16 weeks. In comparison to mock-treated db/db mice, curcumin-treated mice showed diminished renal hypertrophy, reduced mesangial matrix expansion, and a lower level of albuminuria...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28191821/crucial-role-of-mesangial-cell-derived-connective-tissue-growth-factor-in-a-mouse-model-of-anti-glomerular-basement-membrane-glomerulonephritis
#20
Naohiro Toda, Kiyoshi Mori, Masato Kasahara, Akira Ishii, Kenichi Koga, Shoko Ohno, Keita P Mori, Yukiko Kato, Keisuke Osaki, Takashige Kuwabara, Katsutoshi Kojima, Daisuke Taura, Masakatsu Sone, Taiji Matsusaka, Kazuwa Nakao, Masashi Mukoyama, Motoko Yanagita, Hideki Yokoi
Connective tissue growth factor (CTGF) coordinates the signaling of growth factors and promotes fibrosis. Neonatal death of systemic CTGF knockout (KO) mice has hampered analysis of CTGF in adult renal diseases. We established 3 types of CTGF conditional KO (cKO) mice to investigate a role and source of CTGF in anti-glomerular basement membrane (GBM) glomerulonephritis. Tamoxifen-inducible systemic CTGF (Rosa-CTGF) cKO mice exhibited reduced proteinuria with ameliorated crescent formation and mesangial expansion in anti-GBM nephritis after induction...
February 13, 2017: Scientific Reports
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