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Claudio Bazzi, Tomoko Usui, Virginia Rizza, Daniela Casellato, Maurizio Gallieni, Masaomi Nangaku
BACKGROUND: The clinical course of idiopathic membranous nephropathy (IMN) varies from spontaneous remission of nephrotic syndrome (NS) to end-stage renal disease (ESRD). Selecting patients with high risk of progression for immunosuppressive therapy is mandatory. METHODS: 86 IMN subjects were followed for median of 69 months (range 6-253). Receiver operating characteristic curve and Cox proportional hazards model were used to evaluate prognostic factors for progression, defined as ESRD or eGFR reduction ≥50% of baseline...
October 20, 2016: Nephrology
Hui Han, Jinzhou Zhu, Yaqiong Wang, Zhengbin Zhu, Yanjia Chen, Lin Lu, Wei Jin, Xiaoxiang Yan, Ruiyan Zhang
Renal fibrosis is a significant threat to public health globally. Diverse primary aetiologies eventually result in chronic kidney disease (CKD) and immune cells influence this process. The roles of monocytes/macrophages, T cells and mast cells have been carefully examined, whilst only a few studies have focused on the effect of B cells. We investigated B cell function in tubulointerstitial fibrosis induced by unilateral ureteral obstruction (UUO), using genetic B cell-deficient μMT mice or CD20 antibody-mediated B cell depleted mice...
October 20, 2016: Journal of Pathology
Min Shi, Liang Ma, Li Zhou, Ping Fu
Aristolochic acid nephropathy (AAN) is a progressive kidney disease caused by a Chinese herb containing aristolochic acid. Excessive death of renal tubular epithelial cells (RTECs) characterized the acute phase of AAN. Therapies for acute AAN were limited, such as steroids and angiotensin-receptor blockers (ARBs)/angiotensin-converting enzyme inhibitors (ACEIs). It was interesting that, in acute AAN, female patients showed relative slower progression to renal failure than males. In a previous study, female hormone 17β-estradiol (E2) was found to attenuate renal ischemia-reperfusion injury...
October 18, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Allison Ducharme-Smith, Ben Z Katz, Amy E Bobrowski, Carl L Backer, Elfriede Pahl
BKV infection and nephropathy complicate pediatric HTx, but the incidence and time course of the disease are unknown. We assessed the incidence of BKV infection and its association with kidney dysfunction in pediatric HTx recipients. A single center prospective study compared pediatric (<18 years) HTx recipients, with and without BKV infection, who received an allograft between September 2013 and December 2014. Screening of urine for BKV was performed prior to transplant, and at week 1, and at months 3, 6, 9, 12, and 15 months post-transplantation...
October 20, 2016: Pediatric Transplantation
Mei-Rong Du, Gui-Xia Ju, Nian-Sheng Li, Jun-Lin Jiang
Microvascular complications are the leading causes of acquired blindness, end-stage renal failure, and varieties of neuropathy associated with diabetes. Asymmetric dimethylarginine (ADMA), an endogenous nitric oxide synthase inhibitor, is involved in endothelial dysfunction, oxidative stress, and inflammation associated with the progression of diabetic microvascular complications. Elevated ADMA has been detected in experimental animals and patients with diabetic microangiopathy like retinopathy, nephropathy, and neuropathy...
October 2016: Journal of Cardiovascular Pharmacology
Jianyin Long, Shawn S Badal, Zengchun Ye, Yin Wang, Bernard A Ayanga, Daniel L Galvan, Nathanael H Green, Benny H Chang, Paul A Overbeek, Farhad R Danesh
The regulatory roles of long noncoding RNAs (lncRNAs) in transcriptional coactivators are still largely unknown. Here, we have shown that the peroxisome proliferator-activated receptor γ (PPARγ) coactivator α (PGC-1α, encoded by Ppargc1a) is functionally regulated by the lncRNA taurine-upregulated gene 1 (Tug1). Further, we have described a role for Tug1 in the regulation of mitochondrial function in podocytes. Using a murine model of diabetic nephropathy (DN), we performed an unbiased RNA-sequencing (RNA-seq) analysis of kidney glomeruli and identified Tug1 as a differentially expressed lncRNA in the diabetic milieu...
October 17, 2016: Journal of Clinical Investigation
Ashraf Kariminik, Ramin Yaghobi, Shahriar Dabiri
OBJECTIVES: It has been hypothesized that BK polyomavirus infection leads to nephropathy in kidney transplant patients via various plausible mechanisms, such as stimulation of chemokines. The CXCL11 gene may also play a role in BK polyomavirus-associated nephropathy. Our aim was to compare expression levels of CXCL11 in BK polyomavirus-infected versus noninfected kidney transplant patients with nephropathy and healthy controls. MATERIALS AND METHODS: We performed a cross-sectional study of 58 kidney transplant patients with the risk of BK polyomavirus infection; these patients were subgrouped as BK polyomavirus-infected (23 patients) and noninfected (35 patients)...
October 14, 2016: Experimental and Clinical Transplantation
A Pandey, Keshri S Yadav, Gaurav Singh, M Chaturvedi
Kyrle's disease is a rare skin disorder which is characterized by hyperkeratotic papules and nodules with a central keratotic plug mostly located in lower limbs. Exact etiology of Kyrle's disease is unknown, but its association has been reported sparsely with renal disorders, uremic patients on dialysis, diabetes mellitus, liver disease and paraneoplastic syndromes, tuberculosis and some fungal diseases. We report Kyrle's disease in a middle aged female suffering from diabetes mellitus with diabetic nephropathy on hemodialysis...
July 2016: Journal of the Association of Physicians of India
M Jija Jose, Vipin Varkey, R Chandni, P A Zubaida, Jean Maliekkal
OBJECTIVE: To study the relation of smoking and abnormal renal function in type 2 diabetes mellitus by estimating urine protein- creatinine ratio, blood urea, serum creatinine, glomerular filtration rate and serum lipid profile in selected subjects. METHODS: Diabetic patients who attended the Diabetic Clinic, Medical College, Kozhikode were enrolled in the study. The study duration was 6 months, from July 2008 to December 2008. It was conducted in four groups of 40 subjects: diabetic smokers, diabetic non-smokers, non-diabetic smokers and non-diabetic non-smokers...
July 2016: Journal of the Association of Physicians of India
P Fabbrini, K Finkel, M Gallieni, G Capasso, M Cavo, A Santoro, S Pasquali
Acute kidney injury (AKI) is a frequent complication of multiple myeloma and is associated with increased short-term mortality. Additionally, even a single episode of AKI can eventually lead to end-stage renal disease (ESRD), significantly reducing quality of life and long-term survival. In the setting of multiple myeloma, severe AKI (requiring dialysis) is typically secondary to cast nephropathy (CN). Renal injury in CN is due to intratubular obstruction from precipitation of monoclonal serum free light chains (sFLC) as well as direct tubular toxicity of sFLC via stimulation of nuclear factor (NF)κB inflammatory pathways...
October 18, 2016: Journal of Nephrology
Leena Liljedahl, Maiken Højgaard Pedersen, Jenny Norlin, James N McGuire, Peter James
BACKGROUND: Diabetic nephropathy (DN) is a late complication in both type 1 diabetes mellitus (T1DM) and T2DM. Already at an early stage of DN morphological changes occur at the cell surface and in the extracellular matrix where the majority of the proteins carry N-linked glycosylations. These glycosylated proteins are highly important in cell adhesion and cell-matrix processes but not much is known about how they change in DN or whether the distinct etiology of T1DM and T2DM could have an effect on their abundances...
2016: Clinical Proteomics
Daniel C Cattran, Esther D Kim, Heather Reich, Michelle Hladunewich, S Joseph Kim
Although change in proteinuria has been proposed as a surrogate for long-term prognosis in membranous nephropathy (MGN), variability in proteinuria levels and lag between these changes and acceptable end points, such as ESRD, has limited its utility. This cohort study examined the prognostic significance of remission duration in 376 patients with biopsy-proven idiopathic/primary MGN who achieved a remission after a period of nephrotic-range proteinuria. We defined complete remission (CR), partial remission (PR), and relapse as proteinuria ≤0...
October 18, 2016: Journal of the American Society of Nephrology: JASN
Zhi Chen, Hao Wu, Guohua Wang, Ye Feng
BACKGROUND: This study was aimed to explore the molecular mechanisms of hypertensive nephropathy (HTN). METHODS: Gene expression profile of GSE37460, which based on 27 healthy living donor samples (HTN group) and 15 hypertensive nephropathy samples (control group), were downloaded from Gene Expression Omnibus (GEO) database. The differentially expressed genes (DEGs) between two groups were identified. STRING database was used to reveal protein-protein interaction (PPI) network of DEGs, followed by the functional enrichment analysis of the PPI network...
October 18, 2016: BMC Nephrology
Meixue Chen, Jumei Xia, Guangchang Pei, Ying Zhang, Shuting Wu, Yushuang Qin, Yuanjun Deng, Shuiming Guo, Yanyan Guo, Gang Xu, Min Han
BACKGROUND: Researchers have developed several equations to predict glomerular filtration rate (GFR) in patients with chronic kidney diseases (CKD). However, there are scarcely any studies performed to discern the best equation to estimate GFR in patients with pure obstructive nephropathy. In present study, we assessed the suitability of six prediction equations and compared their performance in eGFR evaluation for Chinese patients with obstructive nephropathy. METHODS: A total of 245 adult patients with obstructive nephropathy were enrolled...
October 18, 2016: BMC Nephrology
Smeeta Sadar, Dipti Kaspate, Neeraj Vyawahare
Diabetic nephropathy is a serious microvascular complication and one of the main causes of end-stage renal disease. L-Glutamine (LG) is naturally occurring amino acids with antidiabetic and antioxidant potential. The aim of present investigation was to evaluate the potential of LG against streptozotocin (STZ)-induced diabetic nephropathy (DN) in laboratory rats. DN was induced in male Wistar rats (200-220 g) by intraperitoneal administration of STZ (55 mg/kg). Animals were treated orally with either distilled water (10 mg/kg) or LG (250, 500, and 1000 mg/kg) or Sitagliptin (5 mg/kg)...
October 19, 2016: Renal Failure
Mehmet Ali Cikrikcioglu, Zeynep Erturk, Elif Kilic, Kenan Celik, Iskender Ekinci, Ayse Irem Yasin Cetin, Tuba Ozkan, Guven Cetin, Shute Ailia Dae, Rumeyza Kazancioglu, Reha Erkoc
BACKGROUND: Endocan is a newly identified proteoglycan released from endothelium, stimulating angiogenesis and when increased, indicates endothelial activation (inflammation). Our aim was to examine the association between serum endocan levels and urine albumin-creatinine ratio (UACR). METHOD: One hundred and thirty-seven patients with type 2 diabetes mellitus and normal serum creatinine who had no co-morbidities other than hypertension, diabetic nephropathy, retinopathy, or neuropathy were divided into normoalbuminuria (G1), microalbuminuria (G2), and macroalbuminuria (G3) groups and compared cross-sectionally regarding serum endocan levels...
October 18, 2016: Renal Failure
M Hanefeld, D Appelt, K Engelmann, D Sandner, S R Bornstein, X Ganz, E Henkel, R Haase, A L Birkenfeld
No abstract text is available yet for this article.
September 2016: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
Hanneke de Kort, Kirstin M Heutinck, Jurjen M Ruben, Alessa E Valverde da Silva, Katja C Wolthers, Jörg Hamann, Ineke J M Ten Berge
BACKGROUND: BK polyomavirus (BKV)-associated nephropathy is a threat to kidney allograft survival affecting up to 15% of renal transplant patients. Previous studies revealed that tubular epithelial cells (TEC) show a limited response towards BKV infection. Here we investigated the interplay between BKV and TEC in more detail. In particular, we questioned whether BKV suppresses and/or evades antiviral responses. METHODS: Human primary tubular epithelial cells (TEC) and peripheral blood mononuclear cells were infected with BKV Dunlop strain or other viruses...
October 17, 2016: Transplantation
Hirokazu Muraoka, Kazuhiro Hasegawa, Shu Wakino
OBJECTIVE: Nicotinamide phosphoribosyltransferase (Nampt) cooperates with a longevity gene, Sirt1, to exert the potentiation of stress resistance. We have reported that the high expression level of Nampt in PTs contributes to the sufficient supply of NMN to glomeruli. We also showed that downregulation of Nampt and NMN in PT in DN leads to glomerular damages (Nature Medicine 2013). However, the regulation mechanisms of Nampt expression remain unknown. DESIGN AND METHOD: We investigated how Nampt expression is consistently retained at high levels in PTs under normal conditions and how Nampt levels are decreased in DN...
September 2016: Journal of Hypertension
Masami Tanaka, Takeshi Nishimura, Risa Sekioka, Toshihide Kawai, Shu Meguro, Junichiro Irie, Yoshifumi Saisho, Hiroshi Itoh
OBJECTIVE: This cross-sectional study was conducted to assess the association between serum albumin concentration (SAC) and microvascular complications in hypertensive patients complicated by type 2 diabetes mellitus (T2DM). DESIGN AND METHOD: Four hundred and ninety five hypertensive patients (331 men) with T2DM were investigated. SAC was compared between patients with and without microvascular complications (retinopathy, nephropathy, and neuropathy). Then, logistic regression analyses were performed to examine the effects of various factors on microvascular diseases, and the following factors were considered as independent variables: SAC, gender, age, duration of diabetes, body mass index (BMI), systolic blood pressure (SBP), HbA1c, eGFR, LDL-cholesterol, and triglyceride...
September 2016: Journal of Hypertension
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