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https://www.readbyqxmd.com/read/28814945/glomerular-abundance-of-complement-proteins-characterized-by-proteomic-analysis-of-laser-captured-microdissected-glomeruli-associates-with-progressive-disease-in-iga-nephropathy
#1
Teodora Ioana Flavia Paunas, Kenneth Finne, Sabine Leh, Hans-Peter Marti, Tom Eirik Mollnes, Frode Berven, Bjørn Egil Vikse
BACKGROUND: The clinical course of IgA nephropathy (IgAN) is variable and complement activation may predict prognosis. The present study investigated whether glomerular abundance of complement proteins associates with progression to end-stage renal disease (ESRD) in patients for whom prognosis could not be predicted based on clinical variables. METHODS: Based on data from the Norwegian Kidney Biopsy Registry and the Norwegian Renal Registry, three groups were included: IgAN patients with (n = 9) or without (n = 16) progression to ESRD during 10 years, and controls (n = 15) with a normal kidney biopsy...
2017: Clinical Proteomics
https://www.readbyqxmd.com/read/28795144/renal-outcomes-in-patients-with-iga-nephropathy-undergoing-liver-transplant-a-retrospective-cohort-study
#2
Musab S Hommos, Ziad M El-Zoghby
BACKGROUND: End-stage liver disease (ESLD) is the most common cause of secondary immunoglobulin A nephropathy (IgAN). Multiple mechanisms have been proposed to explain the association between liver disease and IgAN. Although some mechanisms are expected to reverse in patients after liver transplant, the long-term renal prognosis is unclear for these patients. METHODS: This observational retrospective cohort study examined the renal outcomes of 14 patients who had IgAN with end-stage liver disease and subsequently underwent either liver transplant alone or combined liver and kidney transplant at a single tertiary care center...
August 2017: Transplantation Direct
https://www.readbyqxmd.com/read/28743127/a-rare-presentation-of-immunoglobulin-a-nephropathy-acute-kidney-injury
#3
Meric Oruc, Haydar Durak, Serkan Feyyaz Yalin, Nurhan Seyahi, Mehmet Rıza Altıparmak, Sinan Trabulus
BACKGROUND: Acute kidney injury (AKI) is known as an uncommon presentation in immunoglobulin A nephropathy (IgAN). The aim of our study was to analyze the clinical data and biopsy findings in IgAN patients presenting with AKI. METHODS: We performed a retrospective analysis of all subjects who had biopsy-proven IgAN and presented with AKI during June 2002 September 2015. The following data were obtained from medical records. RESULTS: A total of 15 patients of 123 patients (12...
July 26, 2017: Nephron
https://www.readbyqxmd.com/read/28724421/efficacy-and-safety-of-mycophenolate-mofetil-in-patients-with-iga-nephropathy-an-update-meta-analysis
#4
Bing Du, Ye Jia, Wenhua Zhou, Xu Min, Lining Miao, Wenpeng Cui
BACKGROUND: The application of mycophenolate mofetil (MMF) in treating patients with immunoglobulin A nephropathy (IgAN) remains uncertain. This update meta-analysis was performed to re-evaluate the therapeutic potential of MMF in IgAN. METHODS: Articles were obtained by searching the electronic databases without language restriction. Randomized controlled trials studying the role of MMF in treating IgAN were collected. The quality of included studies was critically evaluated...
July 19, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28722531/patterns-of-renal-disease-in-south-korea-a-20-year-review-of-a-single-center-renal-biopsy-database
#5
Ho Sik Shin, Dae Hyeon Cho, Soo Kyoung Kang, Hyun Jeong Kim, Soo Young Kim, Joung Wook Yang, Gyong Hoon Kang, Ye Na Kim, Yeonsoon Jung, Bong-Kwon Cheon, Hark Rim
BACKGROUND: Several registries and centers have reported the results of renal biopsies from different parts of the world. As there are few data regarding the epidemiology of glomerulonephritis (GN) in South Korea, we conducted this study on renal biopsy findings during the last 20 years from a single center. METHODS: Data for 818 patients who underwent renal biopsy at our center between 1992 and 2011 were collected retrospectively. All kidney specimens were examined with light microscopy (LM) and immunofluorescent microscopy (IF)...
November 2017: Renal Failure
https://www.readbyqxmd.com/read/28713898/identification-of-potential-biomarkers-and-therapeutic-targets-for-human-iga-nephropathy-and-hypertensive-nephropathy-by-bioinformatics-analysis
#6
Yingchun Cui, Shengmao Liu, Wenpeng Cui, Dan Gao, Wenhua Zhou, Ping Luo
In order to further elucidate the potential correlations and treatments of IgA nephropathy (IgAN) and hypertensive nephropathy (HT), bioinformatics analysis of IgAN and HT was performed. The mRNA expression profiles of human renal biopsy samples from patients with IgAN, patients with HT and pre‑transplant healthy living controls (LD) were downloaded from the Gene Expression Omnibus database. Then, the differentially expressed genes (DEGs) were identified and functions of DEGs were analyzed. Finally, the regulatory networks containing DEGs and related‑transcription factors (TFs) were constructed using Cytoscape software...
September 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28701738/increased-nocturnal-blood-pressure-variability-is-associated-with-renal-arteriolar-hyalinosis-in-normotensive-patients-with-iga-nephropathy
#7
Shinsuke Isobe, Naro Ohashi, Sayaka Ishigaki, Naoko Tsuji, Takayuki Tsuji, Akihiko Kato, Hideo Yasuda
Abnormal blood pressure (BP) variability (BPV), occurring as beat-to-beat, 24 h, and day-to-day fluctuations, is related to target organ damage. However, the associations between abnormal BPV and renal structural changes have not been clearly investigated. We evaluated the day time and night time BP s.d. and average real variability (ARV), which reflected short-term BPV, the night time to day time (N/D) ratio of systolic BP (SBP), and the 7-day BPV, in 29 normotensive IgA nephropathy (IgAN) patients. We further compared the results with renal structural changes...
July 13, 2017: Hypertension Research: Official Journal of the Japanese Society of Hypertension
https://www.readbyqxmd.com/read/28698271/mannose-binding-lectin-levels-could-predict-prognosis-in-iga-nephropathy
#8
Wei-Yi Guo, Li Zhu, Si-Jun Meng, Su-Fang Shi, Li-Jun Liu, Ji-Cheng Lv, Hong Zhang
IgA nephropathy (IgAN) is characterized by infections followed by episodic gross hematuria. Deficiency of mannose-binding lectin (MBL) is associated with recurrent infection in many diseases, but controversy exists regarding the role of MBL in IgAN. Here, we measured MBL2 variants and MBL levels in 749 patients with IgAN and 489 healthy controls. Overall, 5.2% (39 of 749) of patients with IgAN had MBL deficiency (MBL levels <100 ng/ml), among whom LYPB/LYPB and LXPA/LYPB were the predominant MBL2 haplotypes (82%; 32 of 39)...
July 11, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28697742/increased-c4-and-decreased-c3-levels-are-associated-with-a-poor-prognosis-in-patients-with-immunoglobulin-a-nephropathy-a-retrospective-study
#9
Min Pan, Ji Zhang, Zhanyuan Li, Lingwei Jin, Yu Zheng, Zhihong Zhou, Su Zhen, Guoyuan Lu
BACKGROUND: An association between serum complement levels and poor renal prognosis in patients with immunoglobulin A nephropathy (IgAN) remains controversial. METHODS: We conducted a retrospective study examining the relationship between serum complement levels and prognosis in patients with IgAN. Between 2009 and 2013, patients with biopsy-confirmed IgAN were identified from the Second Affiliated Hospital of Wenzhou Medical College, China, and various parameters were documented during follow-up until 2015...
July 11, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28673452/circulating-complement-factor-h-related-proteins-1%C3%A2-and-5-correlate-with-disease-activity-in-iga-nephropathy
#10
Nicholas R Medjeral-Thomas, Hannah J Lomax-Browne, Hannah Beckwith, Michelle Willicombe, Adam G McLean, Paul Brookes, Charles D Pusey, Mario Falchi, H Terence Cook, Matthew C Pickering
IgA nephropathy (IgAN) is a common cause of chronic kidney disease and end-stage renal failure, especially in young people. Due to a wide range of clinical outcomes and difficulty in predicting response to immunosuppression, we need to understand why and identify which patients with IgAN will develop progressive renal impairment. A deletion polymorphism affecting the genes encoding the complement factor H-related protein (FHR)-1 and FHR-3 is robustly associated with protection against IgAN. Some FHR proteins, including FHR-1 and FHR-5, antagonize the ability of complement factor H (fH), the major negative regulator of the complement alternative pathway, to inhibit complement activation on surfaces, a process termed fH deregulation...
June 30, 2017: Kidney International
https://www.readbyqxmd.com/read/28672768/circulating-cd89-iga-complex-does-not-predict-deterioration-of-kidney-function-in-korean-patients-with-iga-nephropathy
#11
Jong Hyun Jhee, Hye-Young Kang, Meiyan Wu, Bo Young Nam, Tae-Ik Chang, Su-Young Jung, Seohyun Park, Hyoungnae Kim, Hae-Ryong Yun, Youn Kyung Kee, Chang-Yun Yoon, Jung Tak Park, Tae-Hyun Yoo, Shin-Wook Kang, Seung Hyeok Han
BACKGROUND: Soluble CD89 (sCD89)-IgA complex plays a key role in the pathogenesis of IgA nephropathy (IgAN). However, there is a lack of evidence supporting this complex as a good biomarker for disease progression. This study aimed to evaluate the usefulness of sCD89-IgA complex for risk stratification of IgAN. METHODS: A total of 326 patients with biopsy-proven IgAN were included. sCD89-IgA complex was measured by sandwich-enzyme-linked immunosorbent assay. The study endpoints were a 30% decline in estimated glomerular filtration rate (eGFR)...
June 16, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28668953/iga-enhances-igf-1-mitogenic-activity-via-receptor-modulation-in-glomerular-mesangial-cells-implications-for-iga-induced-nephropathy
#12
Amal Al-Eisa, Gursev S Dhaunsi
BACKGROUND/AIM: Glomerulonephritis due to mesangial proliferation is responsible for renal dysfunction in IgA nephropathy (IgAN), however molecular mechanisms of pathogenesis are not well known. We examined the effect of IgA on Insulin-like Growth Factor-1 (IGF-1) activity, a potent mitogen with vital role in growth and development of children, and IGF-1 receptor (IGF-1R) in cultures of glomerular mesangial cells (GMC). METHODS: GMC were isolated from rat kidneys using sieving and enzymatic digestion of tissue homogenates, and cultured in RPMI 1640 medium...
June 27, 2017: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/28663230/tissue-specific-microrna-expression-patterns-in-four-types-of-kidney-disease
#13
Maria Angeles Baker, Seth J Davis, Pengyuan Liu, Xiaoqing Pan, Anna Marie Williams, Kenneth A Iczkowski, Sean T Gallagher, Kaylee Bishop, Kevin R Regner, Yong Liu, Mingyu Liang
MicroRNAs contribute to the development of kidney disease. Previous analyses of microRNA expression in human kidneys, however, were limited by tissue heterogeneity or the inclusion of only one pathologic type. In this study, we used laser-capture microdissection to obtain glomeruli and proximal tubules from 98 human needle kidney biopsy specimens for microRNA expression analysis using deep sequencing. We analyzed specimens from patients with diabetic nephropathy (DN), FSGS, IgA nephropathy (IgAN), membranoproliferative GN (MPGN) (n=19-23 for each disease), and a control group (n=14)...
June 29, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28659572/effect-of-vitamin-d-and-tacrolimus-combination-therapy-on-iga-nephropathy
#14
Dong Yuan, Zhan Fang, Fang Sun, Jing Chang, Jian Teng, Shuhua Lin, Xiaoming Liu
BACKGROUND To explore the effects and the mechanism of vitamin D (VD) and tacrolimus (TAC) combinatorial therapy in the treatment of IgA nephropathy (IgAN) in a rat model. MATERIAL AND METHODS IgAN rat models constructed by oral immunization with bovine serum albumin (BSA) and lipopolysaccharide (LPS) (n=30) and were treated with: saline (model group), TAC (TAC group), or TAC+VD therapy (TAC+VD group) through gavage daily for 14 days. Serum creatinine (Scr), albumin (ALB), blood urea nitrogen (BUN), and urinary protein (UAE) levels were determined...
June 29, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28646076/transcriptomic-and-proteomic-profiling-provides-insight-into-mesangial-cell-function-in-iga-nephropathy
#15
Peidi Liu, Emelie Lassén, Viji Nair, Celine C Berthier, Miyuki Suguro, Carina Sihlbom, Matthias Kretzler, Christer Betsholtz, Börje Haraldsson, Wenjun Ju, Kerstin Ebefors, Jenny Nyström
IgA nephropathy (IgAN), the most common GN worldwide, is characterized by circulating galactose-deficient IgA (gd-IgA) that forms immune complexes. The immune complexes are deposited in the glomerular mesangium, leading to inflammation and loss of renal function, but the complete pathophysiology of the disease is not understood. Using an integrated global transcriptomic and proteomic profiling approach, we investigated the role of the mesangium in the onset and progression of IgAN. Global gene expression was investigated by microarray analysis of the glomerular compartment of renal biopsy specimens from patients with IgAN (n=19) and controls (n=22)...
June 23, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28638602/b-cell-depleting-therapy-with-rituximab-or-ofatumumab-in-immunoglobulin-a-nephropathy-or-vasculitis-with-nephritis
#16
Sigrid Lundberg, Emelie Westergren, Jessica Smolander, Annette Bruchfeld
BACKGROUND: Approximately 30% of adult patients with immunoglobulin A (IgA) nephropathy (IgAN) or IgA vasculitis with nephritis (IgAVN) develop end-stage renal disease during long-term follow-up. In particular, patients with nephritic-nephrotic syndrome have an increased risk of rapid progression. Conventional immunosuppressive therapy with corticosteroids (CSs) may be insufficient for disease control and is associated with a number of side effects. Rituximab (RTX) has been shown to be well tolerated and effective in a range of glomerular diseases, but there is little information on its therapeutic potential in IgAN...
February 2017: Clinical Kidney Journal
https://www.readbyqxmd.com/read/28637589/elevated-factor-h-related-protein-1-and-factor-h-pathogenic-variants-decrease-complement-regulation-in%C3%A2-iga-nephropathy
#17
Agustín Tortajada, Eduardo Gutiérrez, Elena Goicoechea de Jorge, Jaouad Anter, Alfons Segarra, Mario Espinosa, Miquel Blasco, Elena Roman, Helena Marco, Luis F Quintana, Josué Gutiérrez, Sheila Pinto, Margarita Lopez-Trascasa, Manuel Praga, Santiago Rodriguez de Córdoba
IgA nephropathy (IgAN), a frequent cause of chronic kidney disease worldwide, is characterized by mesangial deposition of galactose-deficient IgA1-containing immune complexes. Complement involvement in IgAN pathogenesis is suggested by the glomerular deposition of complement components and the strong protection from IgAN development conferred by the deletion of the CFHR3 and CFHR1 genes (ΔCFHR3-CFHR1). Here we searched for correlations between clinical progression and levels of factor H (FH) and FH-related protein 1 (FHR-1) using well-characterized patient cohorts consisting of 112 patients with IgAN, 46 with non-complement-related autosomal dominant polycystic kidney disease (ADPKD), and 76 control individuals...
June 18, 2017: Kidney International
https://www.readbyqxmd.com/read/28636766/association-of-tnfsf13-polymorphisms-with-iga-nephropathy-in-a-chinese-han-population
#18
Zhong Zhong, Shao-Zhen Feng, Ri-Cong Xu, Zhi-Jian Li, Feng-Xian Huang, Pei-Ran Yin, Wen-Ting Liu, Meng Wang, Dian-Chun Shi, Qian Zhou, Xue-Qing Yu, Ming Li
BACKGROUND: Our previous genome-wide association study of IgA nephropathy (IgAN) in a Chinese Han population suggested that the TNFSF13 gene may be a novel susceptibility gene for IgAN. In the present study, we aimed to further evaluate the associations of single-nucleotide polymorphisms (SNPs) and expression level of the TNFSF13 gene with the risk and clinical parameters of IgAN. METHODS: Six candidate SNPs were selected for genotyping by Sequenom MassARRAY iPLEX in 1000 IgAN cases and 1000 controls...
June 2017: Journal of Gene Medicine
https://www.readbyqxmd.com/read/28636500/the-association-of-rs1047763-and-rs1008898-of-c1galt1-with-iga-nephropathy-risk-a-global-meta-analysis
#19
Ruili Nie, Guixue Cheng, Jin Zhang, Yu Dong, Chen Wang, Jianhua Liu, Xiaosong Qin
IgA nephropathy (IgAN) is a globally common primary glomerulonephritis characterized by an elevated level of serum IgA and immune complex deposition in the mesangial area. In the serum of patients with IgAN, the hinge region of IgA1 immunoglobulin contains aberrantly glycosylated O-glycans deficient in galactose, which is normally added to the core 1 O-glycan structure by core 1 synthase, glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase 1 (C1GALT1), the key enzyme in the process of glycosylation...
June 2017: Monoclonal Antibodies in Immunodiagnosis and Immunotherapy
https://www.readbyqxmd.com/read/28626472/in-iga-nephropathy-glomerulosclerosis-is-associated-with-increased-urinary-cd80-excretion-and-urokinase-type-plasminogen-activator-receptor-positive-podocyturia
#20
Hernán Trimarchi, Romina Canzonieri, Amalia Schiel, Cristian Costales-Collaguazo, Aníbal Stern, Matías Paulero, Tatiana Rengel, José Andrews, Alejandro Iotti, Mariano Forrester, Fernando Lombi, Vanesa Pomeranz, Romina Iriarte, Alexis Muryan, Elsa Zotta
BACKGROUND: Podocyturia may determine the evolution to podocytopenia, glomerulosclerosis, and renal failure. According to the Oxford classification of IgA nephropathy (IgAN), the S1 lesion describes glomerulosclerosis. Urokinase-type plasminogen activator receptor (uPAR) participates in podocyte attachment, while CD80 increases in glomerulosclerosis. We measured uPAR-positive urinary podocytes and urinary CD80 (uCD80) in controls and in IgAN subjects with M1E0S0T0 and M1E0S1T0 Oxford scores to assess a potential association between podocyturia, inflammation, and glomerulosclerosis...
May 2017: Nephron Extra
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