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Michael J Fay, Lauren A C Alt, Dominika Ryba, Ribhi Salamah, Ryan Peach, Alexander Papaeliou, Sabina Zawadzka, Andrew Weiss, Nil Patel, Asad Rahman, Zyaria Stubbs-Russell, Peter C Lamar, Joshua R Edwards, Walter C Prozialeck
Cadmium (Cd) is a nephrotoxic environmental pollutant that causes a generalized dysfunction of the proximal tubule characterized by polyuria and proteinuria. Even though the effects of Cd on the kidney have been well-characterized, the molecular mechanisms underlying these effects have not been fully elucidated. MicroRNAs (miRNAs) are small non-coding RNAs that regulate cellular and physiologic function by modulating gene expression at the post-transcriptional level. The goal of the present study was to determine if Cd affects renal cortex miRNA expression in a well-established animal model of Cd-induced kidney injury...
March 15, 2018: Toxics
Gernot Kriegshäuser, Dietmar Enko, Hasmik Hayrapetyan, Stepan Atoyan, Christian Oberkanins, Tamara Sarkisian
PurposeThis work aimed at investigating demographic, clinical, and genetic characteristics of individuals experiencing their first familial Mediterranean fever (FMF) attack at age ≥40 years in a very large cohort of Armenian FMF patients.MethodsIn total, 10,370 Armenian patients diagnosed with FMF based on the Tel Hashomer criteria and carrying at least one MEFV mutant allele were included in this study.ResultsA total of 354 (3.40%) patients had late-onset FMF. Of these, 194 (54.80%) were female and 160 (45...
March 15, 2018: Genetics in Medicine: Official Journal of the American College of Medical Genetics
Robert Munashe Maweni, Nicholas Sunderland, Zahra Rahim, Emmanuella Odih, Jins Kallampallil, Thomas Saunders, Srikanth Akunuri
BACKGROUND: Hypertensive urgency is defined as a severely elevated systolic blood pressure (SBP) of ≥ 180 mmHg and/or diastolic blood pressure (DBP) of ≥ 120 mmHg, in the absence of end organ damage. It is known that there are racial differences in prevalence and severity of hypertension but there is a dearth of studies looking at hypertensive urgency in Black populations living in Europe. AIMS: We sought to define the clinical characteristics of Black patients presenting with hypertensive urgency, in order to better define the risks and complications this growing population of patients faces...
March 14, 2018: Irish Journal of Medical Science
Marcelo R Luizon, Daniela A Pereira, Valeria C Sandrim
Hypertension is a leading cause of cardiovascular mortality, but only about half of patients on antihypertensive therapy achieve blood pressure control. Preeclampsia is defined as pregnancy-induced hypertension and proteinuria, and is associated with increased maternal and perinatal mortality and morbidity. Similarly, a large number of patients with preeclampsia are non-responsive to antihypertensive therapy. Pharmacogenomics may help to guide the personalized treatment for non-responsive hypertensive patients...
2018: Frontiers in Pharmacology
Haruki Katsumata, Izumi Yamamoto, Yo Komatsuzaki, Mayuko Kawabe, Yusuke Okabayashi, Takafumi Yamakawa, Ai Katsuma, Yasuyuki Nakada, Akimitsu Kobayashi, Yudo Tanno, Jun Miki, Hiroki Yamada, Ichiro Ohkido, Nobuo Tsuboi, Hiroyasu Yamamoto, Takashi Yokoo
BACKGROUND: Both prevention and treatment of recurrent immunoglobulin A nephropathy (IgAN) in kidney transplant recipients are important since recurrent IgAN seems to affect long-term graft survival. We present here a case of recurrent IgAN that was successfully treated using steroid pulse therapy plus tonsillectomy 10 years after kidney transplantation. CASE PRESENTATION: A 46-year-old male was admitted for an episode biopsy with a serum creatinine level of 1...
March 14, 2018: BMC Nephrology
Yan Wu, Guangli Zhang, Niansong Wang, Qin Xue
BACKGROUND/AIMS: Renal involvement is one of the most common extra-articular complications caused by ankylosing spondylitis (AS). Most studies have focused on the incidence rate, clinical manifestation and pathology, while risk factors have hardly been investigated. Therefore, the objective of this study was to assess the risk factors of renal involvement in patients with AS. METHODS: Clinical and biochemical data of 926 AS patients were collected. Based on the manifestations of renal involvement, patients were divided into three groups and the differences in clinical and biochemical characteristics were compared...
March 8, 2018: Kidney & Blood Pressure Research
Marius Jacob, Kim Ohl, Tannaz Goodarzi, Sigrid Harendza, Thomas Eggermann, Christina Fitzner, Ralf-Dieter Hilgers, Anna Bolte, Jürgen Floege, Thomas Rauen, Klaus Tenbrock
BACKGROUND/AIMS: IgA nephropathy (IgAN) is the most common form of primary glomerulonephritis and still constitutes one of the most important causes of end-stage renal disease. Abnormal T cell responses may play a role in IgAN pathogenesis. Co-stimulatory molecules such as cytotoxic T lymphocyte-associated antigen 4 (CTLA-4) are important for naive T cells to initiate and terminate immune responses. Single nucleotide polymorphisms (SNPs) in the CTLA4 gene locus are associated with several autoimmune diseases...
March 8, 2018: Kidney & Blood Pressure Research
Hisayo Fujita, Seiji Matsuoka, Midori Awazu
BACKGROUND: Increase in blood pressure (BP) variability (BPV) is associated with cardiovascular events, target organ damage, and arterial stiffness in adults. We previously reported that 24-h BPV may be associated with arterial stiffness and underlie white-coat hypertension (WCH). In this study, we examined whether visit-to-visit variability (VVV) could predict WCH and whether VVV correlated with eGFR, eGFR slope, and albuminuria/proteinuria in children and adolescents with renal diseases...
March 14, 2018: Clinical and Experimental Nephrology
Eva Nüsken, Jörg Dötsch, Lutz T Weber, Kai-Dietrich Nüsken
Chronic kidney disease affects more than 10% of the population. Programming studies have examined the interrelationship between environmental factors in early life and differences in morbidity and mortality between individuals. A number of important principles has been identified, namely permanent structural modifications of organs and cells, long-lasting adjustments of endocrine regulatory circuits, as well as altered gene transcription. Risk factors include intrauterine deficiencies by disturbed placental function or maternal malnutrition, prematurity, intrauterine and postnatal stress, intrauterine and postnatal overnutrition, as well as dietary dysbalances in postnatal life...
2018: Frontiers in Pediatrics
Enrique Morales, Marina Alonso, Beatriz Sarmiento, Montserrat Morales
No abstract text is available yet for this article.
March 13, 2018: BMJ Case Reports
X Zhuang, Y T Lu, Y Y Chen, J H Lin
Objective: To observe and analyze the difference of serum immunoglobulin IgA, IgG, IgM, β2-microglobulin and transferrin in pre-eclampsia (PE) and pregnancies complicated with chronic kidney disease. Methods: Totally 46(40.0%) pregnancies with PE (PE group), 36(31.3%) pregnancies with chronic kidney disease (chronic kidney disease group) and 33(28.7%) normal pregnancies with normal blood pressure and proteinuria without any complication (control group) delivered in Renji Hospital were recruicted in this study from February 2017 to July 2017...
February 25, 2018: Zhonghua Fu Chan Ke za Zhi
Daniela A Braun, Jillian K Warejko, Shazia Ashraf, Weizhen Tan, Ankana Daga, Ronen Schneider, Tobias Hermle, Tilman Jobst-Schwan, Eugen Widmeier, Amar J Majmundar, Makiko Nakayama, David Schapiro, Jia Rao, Johanna Magdalena Schmidt, Charlotte A Hoogstraten, Hannah Hugo, Sevcan A Bakkaloglu, Jameela A Kari, Sherif El Desoky, Ghaleb Daouk, Shrikant Mane, Richard P Lifton, Shirlee Shril, Friedhelm Hildebrandt
Background: Nephrotic syndrome (NS), a chronic kidney disease, is characterized by significant loss of protein in the urine causing hypoalbuminemia and edema. In general, ∼15% of childhood-onset cases do not respond to steroid therapy and are classified as steroid-resistant NS (SRNS). In ∼30% of cases with SRNS, a causative mutation can be detected in one of 44 monogenic SRNS genes. The gene LAMA5 encodes laminin-α5, an essential component of the glomerular basement membrane. Mice with a hypomorphic mutation in the orthologous gene Lama5 develop proteinuria and hematuria...
March 9, 2018: Nephrology, Dialysis, Transplantation
Nilgun Çakar, Z Birsin Ozcakar, Fatih Ozaltin, Mustafa Koyun, Banu Celikel Acar, Elif Bahat, Bora Gulhan, Emine Korkmaz, Ayşe Yurt, Songül Yılmaz, Oğuz Soylemezoglu, Fatoş Yalcinkaya
BACKGROUND: There are limited data on infants with atypical hemolytic uremic syndrome (aHUS). The aim of this study was to determine the clinical and laboratory features, and to evaluate treatment modalities and outcomes in infants with aHUS. MATERIALS AND METHODS: Relevant data on patients with onset of aHUS at age <2 years were obtained from the Turkish Pediatric aHUS Registry. RESULTS: Among the 146 patients included in the Registry, 53 (36%) (23 male and 30 female) were enrolled for the study...
March 13, 2018: Nephron
Mohsen Jari, Alireza Merrikhi, Roya Kelishadi, Zahra Ghaffarzadeh
Background: Proteinuria is a well-known indicator of renal dysfunction. In this study, we evaluated the frequency of proteinuria in a sample of healthy Iranian elementary school students using both dipsticks and urine albumin-to-creatinine ratio (UACR) methods. Materials and Methods: This cross-sectional study was performed on 478 school students aged 7-9 years who were selected by multistage random cluster sampling from Isfahan city, Iran. A clean midstream first-morning urine sample was obtained from each subject...
2018: Advanced Biomedical Research
Paolo Milani, Giampaolo Merlini, Giovanni Palladini
Light chain (AL) amyloidosis is caused by a usually small plasma-cell clone that is able to produce the amyloidogenic light chains. They are able to misfold and aggregate, deposit in tissues in the form of amyloid fibrils and lead to irreversible organ dysfunction and eventually death if treatment is late or ineffective. Cardiac damage is the most important prognostic determinant. The risk of dialysis is predicted by the severity of renal involvement, defined by the baseline proteinuria and glomerular filtration rate, and by the response to therapy...
2018: Mediterranean Journal of Hematology and Infectious Diseases
Yongxia Wu, Steven Schutt, Katelyn Paz, Mengmeng Zhang, Ryan P Flynn, David Bastian, M Hanief Sofi, Hung Nguyen, Min Dai, Chen Liu, Ying-Jun Chang, Bruce R Blazar, Xue-Zhong Yu
Chronic graft-versus-host disease (cGVHD) is characterized as autoimmune-like fibrosis and antibody production mediated by pathogenic T-cells and B-cells. MicroRNA (miR)-17-92 influences the survival, differentiation and function of lymphocytes in cancer, infections and autoimmunity. To determine whether miR-17-92 regulates T- and B-cell responses in cGVHD, we generated mice conditionally deficient for miR-17-92 in T-cells, B-cells, or both. Using murine models of allogeneic bone marrow transplantation (allo-BMT), we demonstrate that expression of miR-17-92 in donor T- and B-cells is essential for the induction of both scleroderma and bronchiolitis obliterans in cGVHD...
March 12, 2018: Blood
Tomás Urrego, Blanca Ortiz-Reyes, Adriana L Vanegas-García, Carlos H Muñoz, Luis A González, Gloria Vásquez, José A Gómez-Puerta
BACKGROUND AND OBJECTIVE: Diagnosis of lupus nephritis (LN) is usually based on renal biopsy, which is an invasive technique that involves multiple risks. Therefore, different biomarkers have emerged as alternatives for the diagnosis of LN. Nonetheless, studies regarding urinary biomarkers in Latin American patients are limited. The objective of this study was to assess the diagnostic value of urinary transferrin and ceruloplasmin to differentiate patients who have renal involvement from those who do not...
March 9, 2018: Reumatología Clinica
Gisella Vischini, Meghan E Kapp, Ferrin C Wheeler, Laszlo Hopp, Agnes B Fogo
Alport syndrome is due to mutations in one of the genes encoding (α3,4,5) type IV collagen resulting in defective type IV collagen, a key component of the glomerular basement membrane (GBM). The GBM is initially thin, and with ongoing remodeling, develops a thickened basket-woven appearance. We report a unique case of a 9-year-old boy who was biopsied for hematuria and proteinuria, diagnosed as IgA nephropathy, with normal GBM appearance and thickness. Due to a family history of hematuria and chronic kidney disease, he subsequently underwent genetic evaluation and a mutation of α3 type IV collagen (COL4A3) was detected...
March 9, 2018: Human Pathology
Toni K Choueiri, James Larkin, Mototsugu Oya, Fiona Thistlethwaite, Marcella Martignoni, Paul Nathan, Thomas Powles, David McDermott, Paul B Robbins, David D Chism, Daniel Cho, Michael B Atkins, Michael S Gordon, Sumati Gupta, Hirotsugu Uemura, Yoshihiko Tomita, Anna Compagnoni, Camilla Fowst, Alessandra di Pietro, Brian I Rini
BACKGROUND: The combination of an immune checkpoint inhibitor and a VEGF pathway inhibitor to treat patients with advanced renal-cell carcinoma might increase the clinical benefit of these drugs compared with their use alone. Here, we report preliminary results for the combination of avelumab, an IgG1 monoclonal antibody against the programmed cell death protein ligand PD-L1, and axitinib, a VEGF receptor inhibitor approved for second-line treatment of advanced renal-cell carcinoma, in treatment-naive patients with advanced renal-cell carcinoma...
March 9, 2018: Lancet Oncology
Martin Höhne, Christian K Frese, Florian Grahammer, Claudia Dafinger, Giuliano Ciarimboli, Linus Butt, Julia Binz, Matthias J Hackl, Mahdieh Rahmatollahi, Martin Kann, Simon Schneider, Mehmet M Altintas, Bernhard Schermer, Thomas Reinheckel, Heike Göbel, Jochen Reiser, Tobias B Huber, Rafael Kramann, Tamina Seeger-Nukpezah, Max C Liebau, Bodo B Beck, Thomas Benzing, Andreas Beyer, Markus M Rinschen
In diseases of many parenchymatous organs, heterogeneous deterioration of individual functional units determines the clinical prognosis. However, the molecular characterization at the level of such individual subunits remains a technological challenge that needs to be addressed in order to better understand pathological mechanisms. Proteinuric glomerular kidney diseases are frequent and assorted diseases affecting a fraction of glomeruli and their draining tubules to variable extents, and for which no specific treatment exists...
March 9, 2018: Kidney International
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