journal
MENU ▼
Read by QxMD icon Read
search

Journal of the American Society of Nephrology: JASN

journal
https://www.readbyqxmd.com/read/29330340/the-adiponectin-receptor-agonist-adiporon-ameliorates-diabetic-nephropathy-in-a-model-of-type-2-diabetes
#1
Yaeni Kim, Ji Hee Lim, Min Young Kim, Eun Nim Kim, Hye Eun Yoon, Seok Joon Shin, Bum Soon Choi, Yong-Soo Kim, Yoon Sik Chang, Cheol Whee Park
Adiponectin exerts renoprotective effects against diabetic nephropathy (DN) by activating the AMP-activated protein kinase (AMPK)/peroxisome proliferative-activated receptor-α (PPARα) pathway through adiponectin receptors (AdipoRs). AdipoRon is an orally active synthetic adiponectin receptor agonist. We investigated the expression of AdipoRs and the associated intracellular pathways in 27 patients with type 2 diabetes and examined the effects of AdipoRon on DN development in male C57BLKS/J db/db mice, glomerular endothelial cells (GECs), and podocytes...
January 12, 2018: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29330339/hiv-positive-kidney-donor-selection-for-hiv-positive-transplant-recipients
#2
Elmi Muller, Zunaid Barday
The risks associated with transplanting HIV-positive kidneys into HIV-positive recipients have not been well studied. Since 2008, 43 kidneys from 25 HIV-positive deceased donors have been transplanted into patients who are HIV positive in Cape Town, South Africa. Among the donors, 19 (76%) died secondary to trauma. The average age for donors was 34 (interquartile range, 19-52) years old. In some donors, only one kidney was used because of a limited number of suitable recipients on the waiting list. Only two donors had been previously exposed to antiretroviral triple therapy...
January 12, 2018: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29326158/reciprocal-spatiotemporally-controlled-apoptosis-regulates-wolffian-duct-cloaca-fusion
#3
Masato Hoshi, Antoine Reginensi, Matthew S Joens, James A J Fitzpatrick, Helen McNeill, Sanjay Jain
The epithelial Wolffian duct (WD) inserts into the cloaca (primitive bladder) before metanephric kidney development, thereby establishing the initial plumbing for eventual joining of the ureters and bladder. Defects in this process cause common anomalies in the spectrum of congenital anomalies of the kidney and urinary tract (CAKUT). However, developmental, cellular, and molecular mechanisms of WD-cloaca fusion are poorly understood. Through systematic analysis of early WD tip development in mice, we discovered that a novel process of spatiotemporally regulated apoptosis in WD and cloaca was necessary for WD-cloaca fusion...
January 11, 2018: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29326157/targeting-b-cells-and-plasma-cells-in-glomerular-diseases-translational-perspectives
#4
Eva Schrezenmeier, David Jayne, Thomas Dörner
The unique contributions of memory B cells and plasma cells in kidney diseases remain unclear. In this review, we evaluate the clinical experience with treatments directed at B cells, such as rituximab, and at plasma cells, such as proteasome inhibition, to shed light on the role of these two B lineage compartments in glomerular diseases. Specifically, analysis of these targeted interventions in diseases such as ANCA-associated vasculitis, SLE, and antibody-mediated transplant rejection permits insight into the pathogenetic effect of these cells...
January 11, 2018: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29321143/control-of-humoral-response-in-renal-transplantation-by-belatacept-depends-on-a-direct-effect-on-b-cells-and-impaired-t-follicular-helper-b-cell-crosstalk
#5
Claire Leibler, Allan Thiolat, Carole Hénique, Chloé Samson, Caroline Pilon, Marie Tamagne, France Pirenne, Benoit Vingert, José L Cohen, Philippe Grimbert
Generation of de novo donor-specific antibodies (dnDSAs) after renal transplant is recognized as the leading cause of late transplant failure. Hence, the optimal immunosuppressive strategies to limit dnDSA development need to be defined. Recent clinical trials using the novel costimulatory blockade agent CTLA4-Ig (Belatacept) have shown that kidney transplant recipients (KTRs) treated with Belatacept have better graft survival and function and a lower proportion of dnDSAs than control-treated KTRs. Mechanisms involved in the control of humoral responses by Belatacept remain to be investigated...
January 10, 2018: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29321142/differentiating-primary-genetic-and-secondary-fsgs-in-adults-a-clinicopathologic-approach
#6
An S De Vriese, Sanjeev Sethi, Karl A Nath, Richard J Glassock, Fernando C Fervenza
FSGS describes a renal histologic lesion with diverse causes and pathogenicities that are linked by podocyte injury and depletion. Subclasses of FSGS include primary, genetic, and secondary forms, the latter comprising maladaptive, viral, and drug-induced FSGS. Despite sharing certain clinical and histologic features, these subclasses differ noticeably in management and prognosis. Without an accepted nongenetic biomarker that discriminates among these FSGS types, classification of patients is often challenging...
January 10, 2018: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29295873/potentiating-tissue-resident-type-2-innate-lymphoid-cells-by-il-33-to-prevent-renal-ischemia-reperfusion-injury
#7
Qi Cao, Yiping Wang, Zhiguo Niu, Chengshi Wang, Ruifeng Wang, Zhiqiang Zhang, Titi Chen, Xin Maggie Wang, Qing Li, Vincent W S Lee, Qingsong Huang, Jing Tan, Minghao Guo, Yuan Min Wang, Guoping Zheng, Di Yu, Stephen I Alexander, Hui Wang, David C H Harris
The IL-33-type 2 innate lymphoid cell (ILC2) axis has an important role in tissue homeostasis, inflammation, and wound healing. However, the relative importance of this innate immune pathway for immunotherapy against inflammation and tissue damage remains unclear. Here, we show that treatment with recombinant mouse IL-33 prevented renal structural and functional injury and reduced mortality in mice subjected to ischemia-reperfusion injury (IRI). Compared with control-treated IRI mice, IL-33-treated IRI mice had increased levels of IL-4 and IL-13 in serum and kidney and more ILC2, regulatory T cells (Tregs), and anti-inflammatory (M2) macrophages...
January 2, 2018: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29295872/fibrotic-venous-remodeling-and-nonmaturation-of-arteriovenous-fistulas
#8
Laisel Martinez, Juan C Duque, Marwan Tabbara, Angela Paez, Guillermo Selman, Diana R Hernandez, Chad A Sundberg, Jason Chieh Sheng Tey, Yan-Ting Shiu, Alfred K Cheung, Michael Allon, Omaida C Velazquez, Loay H Salman, Roberto I Vazquez-Padron
The frequency of primary failure in arteriovenous fistulas (AVFs) remains unacceptably high. This lack of improvement is due in part to a poor understanding of the pathobiology underlying AVF nonmaturation. This observational study quantified the progression of three vascular features, medial fibrosis, intimal hyperplasia (IH), and collagen fiber organization, during early AVF remodeling and evaluated the associations thereof with AVF nonmaturation. We obtained venous samples from patients undergoing two-stage upper-arm AVF surgeries at a single center, including intraoperative veins at the first-stage access creation surgery and AVFs at the second-stage transposition procedure...
January 2, 2018: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29295871/exosomal-ccl2-from-tubular-epithelial-cells-is-critical-for-albumin-induced-tubulointerstitial-inflammation
#9
Lin-Li Lv, Ye Feng, Yi Wen, Wei-Jun Wu, Hai-Feng Ni, Zuo-Lin Li, Le-Ting Zhou, Bin Wang, Jian-Dong Zhang, Steven D Crowley, Bi-Cheng Liu
Albuminuria is a key instigator of tubulointerstitial inflammation associated with CKD, but the mechanism through which filtered albumin propagates renal injury remains unclear. In this study, we explored the role in this process of exosome mRNA released from tubular epithelial cells (TECs). Compared with control mice, acute and chronic kidney injury models had more exosomes containing inflammatory cytokine mRNA, particularly the chemokine CCL2, in kidneys and urine. In vitro stimulation of TECs with BSA recapitulated this finding...
January 2, 2018: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29282226/maternal-and-fetal-outcomes-of-pregnancies-in-women-with-atypical-hemolytic-uremic-syndrome
#10
Martina Gaggl, Christof Aigner, Dorottya Csuka, Ágnes Szilágyi, Zoltán Prohászka, Renate Kain, Natalja Haninger, Maarten Knechtelsdorfer, Raute Sunder-Plassmann, Gere Sunder-Plassmann, Alice Schmidt
Atypical HUS (aHUS) is a disorder most commonly caused by inherited defects of the alternative pathway of complement, or the proteins that regulate this pathway, and life-threatening episodes of aHUS can be provoked by pregnancy. We retrospectively and prospectively investigated 27 maternal and fetal pregnancy outcomes in 14 women with aHUS from the Vienna Thrombotic Microangiopathy Cohort. Seven pregnancies (26%) were complicated by pregnancy-associated aHUS (p-aHUS), of which three appeared to be provoked by infection, bleeding, and curettage, and three individuals were considered to have preeclampsia/HELLP syndrome before the definitive diagnosis of p-aHUS was made...
December 27, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29279304/the-banff-working-group-classification-of-definitive-polyomavirus-nephropathy-morphologic-definitions-and-clinical-correlations
#11
Volker Nickeleit, Harsharan K Singh, Parmjeet Randhawa, Cinthia B Drachenberg, Ramneesh Bhatnagar, Erika Bracamonte, Anthony Chang, W James Chon, Darshana Dadhania, Vicki G Davis, Helmut Hopfer, Michael J Mihatsch, John C Papadimitriou, Stefan Schaub, Michael B Stokes, Mohammad F Tungekar, Surya V Seshan
Polyomavirus nephropathy (PVN) is a common viral infection of renal allografts, with biopsy-proven incidence of approximately 5%. A generally accepted morphologic classification of definitive PVN that groups histologic changes, reflects clinical presentation, and facilitates comparative outcome analyses is lacking. Here, we report a morphologic classification scheme for definitive PVN from the Banff Working Group on Polyomavirus Nephropathy, comprising nine transplant centers in the United States and Europe...
December 26, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29263159/pathogenicity-of-a-human-laminin-%C3%AE-2-mutation-revealed-in-models-of-alport-syndrome
#12
Steven D Funk, Raymond H Bayer, Andrew F Malone, Karen K McKee, Peter D Yurchenco, Jeffrey H Miner
Pierson syndrome is a congenital nephrotic syndrome with eye and neurologic defects caused by mutations in laminin β2 (LAMB2), a major component of the glomerular basement membrane (GBM). Pathogenic missense mutations in human LAMB2 cluster in or near the laminin amino-terminal (LN) domain, a domain required for extracellular polymerization of laminin trimers and basement membrane scaffolding. Here, we investigated an LN domain missense mutation, LAMB2-S80R, which was discovered in a patient with Pierson syndrome and unusually late onset of proteinuria...
December 20, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29255058/dynamic-prognostic-score-to-predict-kidney-allograft-survival-in-patients-with-antibody-mediated-rejection
#13
Denis Viglietti, Alexandre Loupy, Olivier Aubert, Oriol Bestard, Jean-Paul Duong Van Huyen, Jean-Luc Taupin, Denis Glotz, Christophe Legendre, Xavier Jouven, Michel Delahousse, Nassim Kamar, Carmen Lefaucheur
No tool is available for the early assessment of response to antibody-mediated rejection (ABMR) therapies in kidney allograft recipients. This study was designed to define a dynamic composite prognostic ABMR score to predict kidney allograft survival, integrating the disease characteristics at diagnosis and the response to treatment. Among 1978 kidney recipients who underwent transplant between 2008 and 2014, we included 278 patients diagnosed with active ABMR and receiving standard treatment, including plasma exchange, intravenous Ig, and rituximab...
December 18, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29242250/a-randomized-trial-of-bortezomib-in-late-antibody-mediated-kidney-transplant-rejection
#14
Farsad Eskandary, Heinz Regele, Lukas Baumann, Gregor Bond, Nicolas Kozakowski, Markus Wahrmann, Luis G Hidalgo, Helmuth Haslacher, Christopher C Kaltenecker, Marie-Bernadette Aretin, Rainer Oberbauer, Martin Posch, Anton Staudenherz, Ammon Handisurya, Jeff Reeve, Philip F Halloran, Georg A Böhmig
Late antibody-mediated rejection (ABMR) is a leading cause of kidney allograft failure. Uncontrolled studies have suggested efficacy of the proteasome inhibitor bortezomib, but no systematic trial has been undertaken to support its use in ABMR. In this randomized, placebo-controlled trial (the Bortezomib in Late Antibody-Mediated Kidney Transplant Rejection [BORTEJECT] Trial), we investigated whether two cycles of bortezomib (each cycle: 1.3 mg/m2 intravenously on days 1, 4, 8, and 11) prevent GFR decline by halting the progression of late donor-specific antibody (DSA)-positive ABMR...
December 14, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29242249/acidosis-and-deafness-in-patients-with-recessive-mutations-in-foxi1
#15
Sven Enerbäck, Daniel Nilsson, Noel Edwards, Mikael Heglind, Sumaya Alkanderi, Emma Ashton, Asma Deeb, Feras E B Kokash, Abdulrahim R A Bakhsh, William Van't Hoff, Stephen B Walsh, Felice D'Arco, Arezoo Daryadel, Soline Bourgeois, Carsten A Wagner, Robert Kleta, Detlef Bockenhauer, John A Sayer
Maintenance of the composition of inner ear fluid and regulation of electrolytes and acid-base homeostasis in the collecting duct system of the kidney require an overlapping set of membrane transport proteins regulated by the forkhead transcription factor FOXI1. In two unrelated consanguineous families, we identified three patients with novel homozygous missense mutations in FOXI1 (p.L146F and p.R213P) predicted to affect the highly conserved DNA binding domain. Patients presented with early-onset sensorineural deafness and distal renal tubular acidosis...
December 14, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29242248/causes-of-death-after-a-hospitalization-with-aki
#16
Samuel A Silver, Ziv Harel, Eric McArthur, Danielle M Nash, Rey Acedillo, Abhijat Kitchlu, Amit X Garg, Glenn M Chertow, Chaim M Bell, Ron Wald
Mortality after AKI is high, but the causes of death are not well described. To better understand causes of death in patients after a hospitalization with AKI and to determine patient and hospital factors associated with mortality, we conducted a population-based study of residents in Ontario, Canada, who survived a hospitalization with AKI from 2003 to 2013. Using linked administrative databases, we categorized cause of death in the year after hospital discharge as cardiovascular, cancer, infection-related, or other...
December 14, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29242247/chip-regulates-aquaporin-2-quality-control-and-body-water-homeostasis
#17
Qi Wu, Hanne B Moeller, Donté A Stevens, Rebekah Sanchez-Hodge, Gabrielle Childers, Marleen L A Kortenoeven, Lei Cheng, Lena L Rosenbaek, Carrie Rubel, Cam Patterson, Trairak Pisitkun, Jonathan C Schisler, Robert A Fenton
The importance of the kidney distal convoluted tubule (DCT) and cortical collecting duct (CCD) is highlighted by various water and electrolyte disorders that arise when the unique transport properties of these segments are disturbed. Despite this critical role, little is known about which proteins have a regulatory role in these cells and how these cells can be regulated by individual physiologic stimuli. By combining proteomics, bioinformatics, and cell biology approaches, we found that the E3 ubiquitin ligase CHIP is highly expressed throughout the collecting duct; is modulated in abundance by vasopressin; interacts with aquaporin-2 (AQP2), Hsp70, and Hsc70; and can directly ubiquitylate the water channel AQP2 in vitro shRNA knockdown of CHIP in CCD cells increased AQP2 protein t1/2 and reduced AQP2 ubiquitylation, resulting in greater levels of AQP2 and phosphorylated AQP2...
December 14, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29237740/grhl2-is-required-for-collecting-duct-epithelial-barrier-function-and-renal-osmoregulation
#18
Christian Hinze, Janett Ruffert, Katharina Walentin, Nina Himmerkus, Elham Nikpey, Olav Tenstad, Helge Wiig, Kerim Mutig, Zeliha Yesim Yurtdas, Janet D Klein, Jeff M Sands, Federica Branchi, Michael Schumann, Sebastian Bachmann, Markus Bleich, Kai M Schmidt-Ott
Collecting ducts make up the distal-most tubular segments of the kidney, extending from the cortex, where they connect to the nephron proper, into the medulla, where they release urine into the renal pelvis. During water deprivation, body water preservation is ensured by the selective transepithelial reabsorption of water into the hypertonic medullary interstitium mediated by collecting ducts. The collecting duct epithelium forms tight junctions composed of barrier-enforcing claudins and exhibits a higher transepithelial resistance than other segments of the renal tubule exhibit...
December 13, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29237739/salt-losing-tubulopathies-in-children-what-s-new-what-s-controversial
#19
Robert Kleta, Detlef Bockenhauer
Renal tubulopathies provide insights into the inner workings of the kidney, yet also pose therapeutic challenges. Because of the central nature of sodium in tubular transport physiology, disorders of sodium handling may affect virtually all aspects of the homeostatic functions of the kidney. Yet, owing to the rarity of these disorders, little clinical evidence regarding treatment exists. Consequently, treatment can vary widely between individual physicians and centers and is based mainly on understanding of renal physiology, reported clinical observations, and individual experiences...
December 13, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29237738/ascending-vasa-recta-are-angiopoietin-tie2-dependent-lymphatic-like-vessels
#20
Yael Kenig-Kozlovsky, Rizaldy P Scott, Tuncer Onay, Isabel Anna Carota, Benjamin R Thomson, Hyea Jin Gil, Veronica Ramirez, Shinji Yamaguchi, Christine E Tanna, Stefan Heinen, Christine Wu, Radu V Stan, Janet D Klein, Jeff M Sands, Guillermo Oliver, Susan E Quaggin
Urinary concentrating ability is central to mammalian water balance and depends on a medullary osmotic gradient generated by a countercurrent multiplication mechanism. Medullary hyperosmolarity is protected from washout by countercurrent exchange and efficient removal of interstitial fluid resorbed from the loop of Henle and collecting ducts. In most tissues, lymphatic vessels drain excess interstitial fluid back to the venous circulation. However, the renal medulla is devoid of classic lymphatics. Studies have suggested that the fenestrated ascending vasa recta (AVRs) drain the interstitial fluid in this location, but this function has not been conclusively shown...
December 13, 2017: Journal of the American Society of Nephrology: JASN
journal
journal
20137
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"