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https://www.readbyqxmd.com/read/28097088/icariin-ameliorates-iga-nephropathy-by-inhibition-of-nuclear-factor-kappa-b-nlrp3-pathway
#1
Lei Zhang, Xing-Zhi Wang, Yu-Shu Li, Lei Zhang, Li-Rong Hao
Immunoglobulin A nephropathy (IgAN) is the most frequent form of glomerulonephritis, which is characterized by glomerular proliferation and renal inflammation. Icariin is a flavonoid from the Chinese herb Epimedium, and its anti-inflammatory effect has been reported. This study aimed to investigate the effects of icariin on the renal damage in IgAN rats and the mechanisms behind these effects. IgAN model was established in Sprague-Dawley rats by oral and intravenous immunization with bovine gamma-globulin for 12 weeks, and rats were treated with icariin from 12 to 18 weeks...
January 2017: FEBS Open Bio
https://www.readbyqxmd.com/read/28081165/urine-concentrating-capacity-vasopressin-and-copeptin-in-adpkd-and-iga-nephropathy-patients-with-renal-impairment
#2
Debbie Zittema, Niek F Casteleijn, Stephan J L Bakker, Lianne S M Boesten, A A Margreeth Duit, Casper F M Franssen, Carlo A J M Gaillard, Ron T Gansevoort
BACKGROUND: Autosomal Dominant Polycystic Kidney Disease (ADPKD) patients have an impaired urine concentrating capacity. Increased circulating vasopressin (AVP) concentrations are supposed to play a role in the progression of ADPKD. We hypothesized that ADPKD patients have a more severely impaired urine concentrating capacity in comparison to other patients with chronic kidney disease at a similar level of kidney function, with consequently an enhanced AVP response to water deprivation with higher circulating AVP concentrations...
2017: PloS One
https://www.readbyqxmd.com/read/28061828/risk-factors-of-progressive-iga-nephropathy-which-progress-to-end-stage-renal-disease-within-ten-years-a-case-control-study
#3
Danhua Shu, Feifei Xu, Zhen Su, Ji Zhang, Chaosheng Chen, Jianna Zhang, Xiaokai Ding, Yinqiu Lv, Haixia Lin, Peipei Huang
BACKGROUND: There were few related studies aiming to severe IgA nephropathy (IgAN) which could progress rapidly to end stage renal disease (ESRD) within ten years. To find valuable clinical or pathological factors and promising precautions is essential. METHODS: A single center case-control study was performed. Fifty ESRD patients with the primary cause of IgAN and a short renal survival time of less than ten years after diagnose were enrolled in the case group...
January 7, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28057871/copeptin-a-surrogate-marker-for-arginine-vasopressin-is-associated-with-disease-severity-and-progression-in-iga-nephropathy-patients
#4
Debbie Zittema, Jan A J G van den Brand, Stephan J L Bakker, Jack F Wetzels, Ron T Gansevoort
BACKGROUND: Besides its essential role for water homeostasis, arginine vasopressin (AVP) may have deleterious effects on the kidney. Copeptin, a surrogate marker for AVP, has been shown to be related to renal outcome in patients with diabetic nephropathy and polycystic kidney disease. We investigated the association of copeptin with disease severity and progression in immunoglobulin A nephropathy (IgAN). METHODS: We included a prospective cohort of 59 patients with biopsy proven IgAN...
January 5, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28056461/predicting-post-transplant-recurrence-of-iga-nephropathy-the-importance-of-crescents
#5
Rupali S Avasare, Paul E Rosenstiel, Ziad S Zaky, Demetra S Tsapepas, Gerald B Appel, Glen S Markowitz, Andrew S Bomback, Pietro A Canetta
BACKGROUND: Most studies that have assessed the predictors of recurrent IgA nephropathy (IgAN) in the renal allograft have focused on post-transplant features. Identifying high-risk pre-transplant features of IgAN is useful for counseling patients and may help in tailoring post-transplant immunosuppression. METHODS: We investigated the pre-transplant clinical and biopsy features of 62 patients with IgAN who received transplants at Columbia University Medical Center from 2001 to 2012 and compared the characteristics and outcomes of patients with IgAN recurrence to those without recurrence...
January 6, 2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/28042675/1%C3%A2-h-nmr-based-metabolomics-study-for-identifying-urinary-biomarkers-and-perturbed-metabolic-pathways-associated-with-severity-of-iga-nephropathy-a-pilot-study
#6
Shiva Kalantari, Mohsen Nafar, Shiva Samavat, Mahmoud Parvin
The severity of IgA nephropathy (IgAN), the most common primary glomerulonephritis, is judged on the basis of histologic and clinical features. A limited number of studies have considered molecular signature of IgAN for this issue and no reliable biomarkers have been presented non-invasively for use in patient evaluations. This study aims to identify metabolite markers excreted in the urine and impaired pathways that are associated with a known marker of severity (proteinuria) to predict mild and severe stages of IgAN...
January 1, 2017: Magnetic Resonance in Chemistry: MRC
https://www.readbyqxmd.com/read/28035353/tgf-%C3%AE-1-mimics-the-effect-of-il-4-on-the-glycosylation-of-iga1-by-downregulating-core-1-%C3%AE-1-3-galactosyltransferase-and-cosmc
#7
Jun Xiao, Manting Wang, Dawei Xiong, Ying Wang, Qiuyue Li, Jing Zhou, Qinkai Chen
The aberrant glycosylation of IgA1 is pivotal in the pathogenesis of IgA nephropathy (IgAN). The aim of the present study was to investigate the effect of transforming growth factor‑β1 (TGF‑β1) on the glycosylation of IgA1 and the associated mechanism. The mRNA levels of core1 β1, 3-galactosyltransferase (C1GalT1) and its molecular chaperone, Cosmc, were analyzed, as was the subsequent O-glycosylation of IgA1, in a human B‑cell line stimulated with TGF‑β1. The IgA1‑positive human B‑cell line was cultured with different concentrations of recombinant human TGF‑β1 (5, 10, 15 and 30 ng/ml)...
February 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28001190/an-update-on-pathology-of-iga-nephropathy
#8
Maria Fernanda Soares
IgA Nephropathy (IgAN) is the commonest of the glomerular diseases in the world. Its progression rate of 30-40% of the cases em 20-30 years makes IgAN an important healthcare issue in Nephrology. Diagnosis of IgAN depends on biopsy findings, particularly at immunofluorescence microscopy. The frequence of IgAN diagnosis is variable in different populations and depends on screening and biopsy indication policies. IgAN pathogenesis is considered multifactorial; its primordial defect is the production of galactosis-deficient IgA molecules...
December 2016: Jornal Brasileiro de Nefrologia: ʹorgão Oficial de Sociedades Brasileira e Latino-Americana de Nefrologia
https://www.readbyqxmd.com/read/27997897/plasma-gelsolin-promotes-proliferation-of-mesangial-cell-in-iga-nephropathy
#9
Lei Zhang, Dan Kong, Hongxue Meng, Changsong Han, Jiang Zhu, Juanjuan Qiao, Yan He, Tianzhen Wang, Xiaobo Li, Fengmin Zhang, Xiaoming Jin
BACKGROUND/AIMS: Plasma gelsolin (pGSN) is an actin-binding protein that plays a critical role in the pathogenesis of rheumatoid arthritis. However, whether pGSN is involved in other immunological diseases remains unknown. This study focused on the relationship between pGSN and immunoglobulin A (IgA) nephropathy (IgAN). METHODS: Two hundred patients with IgAN, 200 patients each with several other types of nephropathy and healthy controls (HCs) who underwent kidney biopsies between 2000 and 2014 were enrolled in the study...
2016: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/27992535/cleaved-form-of-osteopontin-in-urine-as-a-clinical-marker-of-lupus-nephritis
#10
Koji Kitagori, Hajime Yoshifuji, Takuma Oku, Chiyomi Sasaki, Hitomi Miyata, Keita P Mori, Toshiki Nakajima, Koichiro Ohmura, Daisuke Kawabata, Naoichiro Yukawa, Yoshitaka Imura, Kosaku Murakami, Ran Nakashima, Takashi Usui, Takao Fujii, Kaoru Sakai, Motoko Yanagita, Yoshitaka Hirayama, Tsuneyo Mimori
We assessed the utility of two forms of osteopontin (OPN), OPN full and its cleaved form (OPN N-half), in plasma and urine as markers of disease activity in lupus nephritis (LN). Samples were collected from patients with systemic lupus erythematosus (SLE) (LN: N = 29, non-LN: N = 27), IgA nephropathy (IgAN) (N = 14), minimal change nephrotic syndrome (MCNS) (N = 5), diabetic nephropathy (DN) (N = 14) and healthy volunteers (HC) (N = 17). While there was no significant difference in urine OPN full concentration between groups, urine OPN N-half concentration was significantly higher in patients with LN than HC (p < 0...
2016: PloS One
https://www.readbyqxmd.com/read/27990017/glomerular-disease-role-of-tonsillar-b-cells-in-igan
#11
Ellen F Carney
No abstract text is available yet for this article.
February 2017: Nature Reviews. Nephrology
https://www.readbyqxmd.com/read/27957418/beneficial-effects-of-tonsillectomy-plus-steroid-pulse-therapy-on-inflammatory-and-tubular-markers-in-patients-with-iga-nephropathy
#12
Shuntaro Maruyama, Tomohito Gohda, Yusuke Suzuki, Hitoshi Suzuki, Yuji Sonoda, Saki Ichikawa, Zi Li, Maki Murakoshi, Satoshi Horikoshi, Yasuhiko Tomino
BACKGROUND: IgA nephropathy (IgAN) is the most common form of primary glomerulonephritis worldwide. Tonsillectomy plus steroid pulse therapy has been able to induce clinical remission in early-stage IgAN. However, its possible effect on systemic and local cytokines and tubular markers has not been fully investigated. METHODS: We obtained serum and urine samples from 38 patients just before renal biopsy and third steroid pulse therapy. Markers of tubular damage such as N-acetyl-β-d-glucosaminidase, and kidney injury molecule-1 and inflammation such as interleukin (IL)-6, monocyte chemotactic protein (MCP)-1, intercellular adhesion molecule (ICAM)-1, and vascular cell adhesion molecule (VCAM)-1 were measured by immunoassay...
December 2016: Kidney Research and Clinical Practice
https://www.readbyqxmd.com/read/27942230/iga1-dominant-subclass-of-latent-iga-mesangial-deposition-in-donated-kidney
#13
Kazumasa Oka, Kenji Nishimura, Hidefumi Kishikawa, Yasuji Ichikawa
BACKGROUND: In the pathogenesis of immunoglobulin A nephropathy (IgAN), the IgA1 subclass is more important than the IgA2 subclass. In healthy men, the prevalence of mesangial IgA deposition has been previously investigated. However, it remains unknown whether the presence of urinary abnormalities depends on the subclass of IgA deposition. MATERIALS AND METHODS: We researched the subclasses of IgA (IgA1 and IgA2) by the direct immunofluorescence (IF) staining method using specimens in which we identified the deposition of IgA through zero-hour renal transplant biopsies from donors without urinary abnormalities...
2016: International Journal of Nephrology and Renovascular Disease
https://www.readbyqxmd.com/read/27932191/iga-nephropathy-clinicopathologic-study-following-the-oxford-classification-progression-peculiarities-and-gender-related-differences
#14
Živile Riispere, Arvydas Laurinavičius, Anne Kuudeberg, Elviira Seppet, Kristin Sepp, Madis Ilmoja, Merike Luman, Külli Kõlvald, Asta Auerbach, Mai Ots-Rosenberg
BACKGROUND AND AIM: Immunoglobulin A nephropathy (IgAN) is the most frequent glomerular disease worldwide and one of the main causes of chronic kidney disease. We aimed to investigate clinicopathological correlations in IgAN patients by gender. MATERIALS AND METHODS: The study was based on a retrospective analysis of renal biopsy data and clinical manifestations of the disease. Consecutive 73 biopsy-proven IgAN cases of male (62%) and female (38%) patients were investigated...
2016: Medicina
https://www.readbyqxmd.com/read/27930655/effect-of-immunosuppressive-drugs-on-the-changes-of-serum-galactose-deficient-iga1-in-patients-with-iga-nephropathy
#15
Min Jeong Kim, Stefan Schaub, Karen Molyneux, Michael T Koller, Susanne Stampf, Jonathan Barratt
Galactose-deficient IgA1 (Gd-IgA1) and IgA-IgG complexes are known to play an important role in the pathogenesis of IgA nephropathy (IgAN). We aimed therefore to determine the impact of immunosuppression on the serum levels of Gd-IgA1, total IgA1 and IgA-IgG complexes in IgAN patients. In a retrospective study, serum samples from IgAN patients collected before transplantation (t0) and at 3- and 6-month posttransplant (t3 & t6) were used to measure the levels of Gd-IgA1, total IgA1 and IgA-IgG complexes. The area under the curves (AUC) of immunosuppressants was calculated by the plot of plasma trough level or dosage of each immunosuppressant versus time and was interpreted as the extent of drug exposure...
2016: PloS One
https://www.readbyqxmd.com/read/27929572/what-does-stop-igan-tell-us-about-how-to-treat-iga-nephropathy
#16
S Piracha, J Gnanapragasam, S M Tariq
Bronchoesophageal fistulae are a rare complication of tuberculosis. Traditionally they are managed by either thoracotomy with resection and closure of the fistulous tract or by taking a more conservative approach of giving standard treatment for tuberculosis while ensuring nutritional support through a nasogastric tube. We report a young student with disseminated tuberculosis complicated by a bronchoesophageal fistula. He was managed conservatively with anti-tuberculous chemotherapy and nutrition administered through a percutaneous endoscopic gastrostomy tube...
June 2016: Journal of the Royal College of Physicians of Edinburgh
https://www.readbyqxmd.com/read/27920152/toll-like-receptor-9-stimulation-induces-aberrant-expression-of-a-proliferation-inducing-ligand-by-tonsillar-germinal-center-b-cells-in-iga-nephropathy
#17
Masahiro Muto, Benoit Manfroi, Hitoshi Suzuki, Kensuke Joh, Masaaki Nagai, Sachiko Wakai, Christian Righini, Masayuki Maiguma, Shozo Izui, Yasuhiko Tomino, Bertrand Huard, Yusuke Suzuki
The TNF family member a proliferation-inducing ligand (APRIL; also known as TNFSF13), produced by myeloid cells, participates in the generation and survival of antibody-producing plasma cells. We studied the potential role of APRIL in the pathogenesis of IgA nephropathy (IgAN). We found that a significant proportion of germinal centers (GCs) in tonsils of patients with IgAN contained cells aberrantly producing APRIL, contributing to an overall upregulation of tonsillar APRIL expression compared with that in tonsils of control patients with tonsillitis...
December 5, 2016: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/27914703/evidence-from-the-oxford-classification-cohort-supports-the-clinical-value-of-subclassification-of%C3%A2-focal-segmental-glomerulosclerosis-in-iga%C3%A2-nephropathy
#18
Shubha S Bellur, Fanny Lepeytre, Olga Vorobyeva, Stéphan Troyanov, H Terence Cook, Ian S D Roberts
Focal segmental glomerulosclerosis (FSGS) is a common finding in IgA nephropathy (IgAN). Here we assessed FSGS lesions in the Oxford Classification patient cohort and correlated histology with clinical presentation and outcome to determine whether subclassification of the S score in IgAN is reproducible and of clinical value. Our subclassification of lesions in 137 individuals with segmental glomerulosclerosis or adhesion (S1) identified 38% with podocyte hypertrophy, 10% with hyalinosis, 9% with resorption droplets within podocytes, 7% with tip lesions, 3% with perihilar sclerosis, and 2% with endocapillary foam cells...
January 2017: Kidney International
https://www.readbyqxmd.com/read/27900334/serum-levels-of-soluble-st2-and-il-10-are-associated-with-disease-severity-in-patients-with-iga-nephropathy
#19
Zhihui Zhang, Haifeng Wang, Li Zhang, Rebecca Crew, Nan Zhang, Xiaolei Liu, Yanfang Jiang
Background. The IL-33/ST2 axis is involved in humoral immune responses. Method. The concentrations of sera IL-33 and sST2 in 74 patients and 34 healthy controls (HC) were measured by ELISA. Clinical and laboratory data were examined. The potential association between sera IL-33 and sST2 and the clinical parameters in IgAN patients were analyzed. Results. No difference was discovered in IL-33 concentrations between IgAN patients and HCs; however, the sST2 were significantly higher in each stage of IgAN progression than in the HC...
2016: Journal of Immunology Research
https://www.readbyqxmd.com/read/27896619/dqb1-060101-may-contribute-to-susceptibility-to-immunoglobulin-a-nephropathy-in-southern-han-chinese
#20
Wei Wang, Ming Li, Li Wang, Xueqing Yu
Immunoglobulin A nephropathy (IgAN) is a common form of chronic glomerulonephritis with unknown pathogenesis. Accumulating evidences have shown the ethnic-specific association between certain human leukocyte antigen (HLA) alleles and IgAN susceptibility. This study was designed to explore the relationship between HLA-DQB1 alleles and disease susceptibility and clinical manifestations of patients with IgAN in southern Han Chinese. A PCR sequence-based typing technique was used to detect HLA-DQB1 alleles in 217 IgAN patients and 229 healthy subjects...
November 28, 2016: Frontiers of Medicine
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