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tubulointerstitial disease

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https://www.readbyqxmd.com/read/28228736/stress-signal-network-between-hypoxia-and-er-stress-in-chronic-kidney-disease
#1
REVIEW
Hiroshi Maekawa, Reiko Inagi
Chronic kidney disease (CKD) is characterized by an irreversible decrease in kidney function and induction of various metabolic dysfunctions. Accumulated findings reveal that chronic hypoxic stress and endoplasmic reticulum (ER) stress are involved in a range of pathogenic conditions, including the progression of CKD. Because of the presence of an arteriovenous oxygen shunt, the kidney is thought to be susceptible to hypoxia. Chronic kidney hypoxia is induced by a number of pathogenic conditions, including renal ischemia, reduced peritubular capillary, and tubulointerstitial fibrosis...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28220896/mitochondrial-dysregulation-secondary-to-endoplasmic-reticulum-stress-in-autosomal-dominant-tubulointerstitial-kidney-disease-umod-adtkd-umod
#2
Elisabeth Kemter, Thomas Fröhlich, Georg J Arnold, Eckhard Wolf, Rüdiger Wanke
'Autosomal dominant tubulointerstitial kidney disease - UMOD' (ADTKD-UMOD) is caused by impaired maturation and secretion of mutant uromodulin (UMOD) in thick ascending limb of Henle loop (TAL) cells, resulting in endoplasmic reticulum (ER) stress and unfolded protein response (UPR). To gain insight into pathophysiology, we analysed proteome profiles of TAL-enriched outer renal medulla samples from ADTKD-UMOD and control mice by quantitative LC-MS/MS. In total, 212 differentially abundant proteins were identified...
February 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28202497/deficiency-of-the-angiotensinase-aminopeptidase-a-increases-susceptibility-to-glomerular-injury
#3
Juan Carlos Q Velez, Ehtesham Arif, Jessalyn Rodgers, Megan P Hicks, John M Arthur, Deepak Nihalani, Evelyn T Bruner, Milos N Budisavljevic, Carl Atkinson, Wayne R Fitzgibbon, Michael G Janech
Aminopeptidase A (APA) is expressed in glomerular podocytes and tubular epithelia and metabolizes angiotensin II (AngII), a peptide known to promote glomerulosclerosis. In this study, we tested whether APA expression changes in response to progressive nephron loss or whether APA exerts a protective role against glomerular damage and during AngII-mediated hypertensive kidney injury. At advanced stages of FSGS, fawn-hooded hypertensive rat kidneys exhibited distinctly increased APA staining in areas of intact glomerular capillary loops...
February 15, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28201996/urinary-sediment-mirnas-reflect-tubulointerstitial-damage-and-therapeutic-response-in-iga-nephropathy
#4
Shuang Liang, Guang-Yan Cai, Zhi-Yu Duan, Shu-Wen Liu, Jie Wu, Yang Lv, Kai Hou, Zuo-Xiang Li, Xue-Guang Zhang, Xiang-Mei Chen
BACKGROUND: Immunoglobulin A nephropathy (IgAN) is the most common glomerulonephritis worldwide. The clinical spectrum of IgAN varies from minor urinary abnormalities to rapidly progressive renal failure. Evaluation of the disease by repeated renal biopsy is not practical due to its invasive procedure. Urinary sediment miRNAs promise to serve as non-invasive biomarkers to assess kidney injury of IgAN. METHODS: Fifty two biopsy-proven IgAN patients and twenty five healthy controls were enrolled in the study...
February 15, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28197887/the-iskdc-classification-and-a-new-semiquantitative-classification-for-predicting-outcomes-of-henoch-sch%C3%A3-nlein-purpura-nephritis
#5
Mikael Koskela, Elisa Ylinen, Elli-Maija Ukonmaanaho, Helena Autio-Harmainen, Päivi Heikkilä, Jouko Lohi, Outi Jauhola, Jaana Ronkainen, Timo Jahnukainen, Matti Nuutinen
BACKGROUND: Histological findings from primary kidney biopsies were correlated with patient outcomes in a national cohort of paediatric Henoch-Schönlein nephritis (HSN) patients. METHODS: Primary kidney biopsies from 53 HSN patients were re-evaluated using the ISKDC (International Study of Kidney Disease in Children) classification and a modified semiquantitative classification (SQC) that scores renal findings and also takes into account activity, chronicity and tubulointerstitial indices...
February 14, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28197771/granulomatous-interstitial-nephritis-associated-with-primary-sj%C3%A3-gren-s-syndrome
#6
B Bitik, I I Gonul, S Haznedaroglu, B Goker, A Tufan
Primary Sjögren's syndrome (pSS) is an autoimmune disease characterized by lymphocytic and plasmacytic infiltration of the exocrine glands. Tubulointerstitial nephritis (TIN) is the most common type of renal involvement in pSS. However, clinically significant renal involvement is uncommon. Granulomatous interstitial nephritis (GIN) is a rare histopathological entity characterized by the presence of granulomas against a background of interstitial inflammation. GIN is not a typical and commonly seen form of TIN in pSS...
February 14, 2017: Zeitschrift Für Rheumatologie
https://www.readbyqxmd.com/read/28196143/iron-restricted-pair-feeding-affects-renal-damage-in-rats-with-chronic-kidney-disease
#7
Yoshiro Naito, Aya Senchi, Hisashi Sawada, Makiko Oboshi, Tetsuo Horimatsu, Keisuke Okuno, Seiki Yasumura, Masaharu Ishihara, Tohru Masuyama
BACKGROUND: We have previously shown that dietary iron restriction prevents the development of renal damage in a rat model of chronic kidney disease (CKD). However, iron deficiency is associated with appetite loss. In addition, calorie restriction is reported to prevent the development of end-stage renal pathology in CKD rats. Thus, the beneficial effect of iron restriction on renal damage may depend on calorie restriction. Here, we investigate the effect of pair-feeding iron restriction on renal damage in a rat model of CKD...
2017: PloS One
https://www.readbyqxmd.com/read/28183033/diabetic-nephropathy-a-potential-savior-with-rotten-egg-smell
#8
REVIEW
George J Dugbartey
Diabetic nephropathy (DN) is currently the leading cause of end-stage renal disease. Despite optimal management, DN is still a major contributor to morbidity and mortality of diabetic patients worldwide. The major pathological alterations in DN include excessive accumulation and deposition of extracellular matrix, leading to expansion of mesangial matrix, thickening of glomerular basement membrane and tubulointerstitial fibrosis. At the molecular level, accumulating evidence suggests that hyperglycemia or high glucose mediates renal injury in DN via multiple molecular mechanisms such as induction of oxidative stress, upregulation of renal transforming growth factor beta-1 expression, production of proinflammatory cytokines, activation of fibroblasts and renin angiotensin system, and depletion of adenosine triphosphate...
November 11, 2016: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28168814/targeting-multiple-pathways-reduces-renal-and-cardiac-fibrosis-in-rats-with-subtotal-nephrectomy-followed-by-coronary-ligation
#9
N R Oosterhuis, L G Bongartz, M C Verhaar, C Cheng, Y J Xu, A van Koppen, M J Cramer, R Goldschmeding, C A Gaillard, P A Doevendans, B Braam, J A Joles
AIM: Multiple interacting pathways contribute to progression of renal and cardiac damage in chronic kidney disease followed by chronic heart failure (renocardiac syndrome). We hypothesized that simultaneous pharmacological modulation of critical pathways implicated in renocardiac syndrome would effectively reduce fibrosis in and preserve function of heart and kidney. METHODS: Rats were subjected to subtotal nephrectomy followed 9 weeks later by coronary artery ligation...
November 7, 2016: Acta Physiologica
https://www.readbyqxmd.com/read/28163057/slit2-ameliorates-renal-inflammation-and-fibrosis-after-hypoxia-and-lipopolysaccharide-induced-epithelial-cells-injury-in-vitro
#10
Xiangjun Zhou, Qisheng Yao, Xinbo Sun, Xiaoxin Gong, Yong Yang, Congbo Chen, Guang Shan
Hypoxic acute kidney injury (AKI) is often incompletely repaired and leads to chronic kidney disease (CKD), which is characterized by tubulointerstitial inflammation and fibrosis. The Slit2 family of secreted glycoproteins is expressed in the kidney, it has been shown to exert an anti-inflammatory activity and prevent ischemic renal injury in vivo. However, whether Slit2 reduces renal fibrosis and inflammation after hypoxic and inflammatory epithelial cells injury in vitro remains unknown. In this study, we aimed to evaluate whether Slit2 ameliorated fibrosis and inflammation in two renal epithelial cells line challenged with hypoxia and lipopolysaccharide (LPS)...
February 3, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28147348/the-association-between-biomarker-profiles-etiology-of-chronic-kidney-disease-and-mortality
#11
David Langsford, Mila Tang, Hicham I Cheikh Hassan, Ognjenka Djurdjev, Manish M Sood, Adeera Levin
BACKGROUND: Prognosis in chronic kidney disease (CKD) for adverse outcomes differs substantially based on the etiology of CKD. We examined whether the biomarker profile differed based on CKD etiology and whether they were associated with mortality. METHODS: Prospective observational study of 1,157 patients, 663 with diabetic kidney disease (DKD), 273 with glomerulonephritis (GN), and 221 with cystic/interstitial disease (polycystic kidney disease, pyelonephritis or chronic tubulointerstitial nephritis [PCK/TIN]) were identified in the Canadian Study of Prediction of Dialysis, Death and Interim Cardiovascular events over Time cohort...
February 2, 2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/28129112/therapeutic-mir-21-silencing-ameliorates-diabetic-kidney-disease-in-mice
#12
Malte Kölling, Tamas Kaucsar, Celina Schauerte, Anika Hübner, Angela Dettling, Joon-Keun Park, Martin Busch, Xaver Wulff, Matthias Meier, Kristian Scherf, Nóra Bukosza, Gábor Szénási, Mária Godó, Amit Sharma, Michael Heuser, Peter Hamar, Claudia Bang, Hermann Haller, Thomas Thum, Johan M Lorenzen
Diabetic nephropathy is the main cause of end-stage renal disease. MicroRNAs are powerful regulators of the genome, and global expression profiling revealed miR-21 to be among the most highly regulated microRNAs in kidneys of mice with diabetic nephropathy. In kidney biopsies of diabetic patients, miR-21 correlated with tubulointerstitial injury. In situ PCR analysis showed a specific enrichment of miR-21 in glomerular cells. We identified cell division cycle 25a (Cdc25a) and cyclin-dependent kinase 6 (Cdk6) as novel miR-21 targets in mesangial cells...
January 4, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28126239/renal-morphology-clinical-findings-and-progression-rate-in-mesoamerican-nephropathy
#13
Julia Wijkström, Marvin González-Quiroz, Mario Hernandez, Zulma Trujillo, Kjell Hultenby, Anneli Ring, Magnus Söderberg, Aurora Aragón, Carl-Gustaf Elinder, Annika Wernerson
BACKGROUND: Mesoamerican nephropathy (MeN) is a chronic kidney disease affecting rural inhabitants in Central America. We have previously described the renal morphology in 8 patients from El Salvador. To confirm the renal pathology, we have studied kidney biopsies from patients with MeN in Nicaragua. Follow-up urine and blood samples from both biopsy studies were collected to investigate the natural history. STUDY DESIGN: Case series. SETTINGS & PARTICIPANTS: In the kidney biopsy study, 19 male sugarcane workers in Nicaragua with suspected MeN were investigated with questionnaires, kidney biopsies, and blood and urine analysis...
January 23, 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/28124483/mutations-in-ttc21b-cause-different-phenotypes-in-two-childhood-cases-in-china
#14
Hongwen Zhang, Baige Su, Xiaoyu Liu, Huijie Xiao, Jie Ding, Yong Yao
AIM: The TTC21B gene is now known as causative of nephronophthisis-related ciliopathies (NPHP-RC). We reported two Chinese pediatric cases with end-stage renal disease and other phenotypes caused by the TTC21B gene mutations. METHODS: The clinical features of Chinese pediatric cases with NPHP-RC were summarized. Mutation analysis of the TTC21B gene was performed using next-generation sequencing. RESULTS: The two cases both had nephrotic proteinuria, renal failure, hypertension and abnormal liver function (or hepatic fibrosis)...
January 26, 2017: Nephrology
https://www.readbyqxmd.com/read/28112564/frequency-clinicopathological-features-and-phylogenetic-analysis-of-feline-morbillivirus-in-cats-in-istanbul-turkey
#15
Huseyin Yilmaz, Bilge K Tekelioglu, Aydin Gurel, Ozge E Bamac, Gulay Y Ozturk, Utku Y Cizmecigil, Eda A Tarakci, Ozge Aydin, Aysun Yilmaz, Eduardo Berriatua, Chris R Helps, Juergen A Richt, Nuri Turan
Objectives The aim of the study was to investigate feline morbillivirus (FmoPV) frequency, phylogeny and associated pathology in cats in Istanbul, Turkey. Methods Samples from sick (n = 96) and dead ( n = 15) cats were analysed using reverse transcription PCR. Blood and urine analyses and histopathology were also performed. Results FmoPV RNA was detected in six cats (5.4%), including three sick (in the urine) and three dead cats (tissues). A significantly greater proportion of FmoPV RNA-positive cats had street access compared with non-infected cats...
January 1, 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/28111218/betanin-isolated-from-fruits-of-opuntia-elatior-mill-attenuates-renal-fibrosis-in-diabetic-rats-through-regulating-oxidative-stress-and-tgf-%C3%AE-pathway
#16
Brijesh Sutariya, Madhusudan Saraf
ETHNOPHARMACOLOGICAL RELEVANCE: The fruits of Opuntia elatior Mill are being used traditionally in different disease condition like diabetes, obesity, asthma, inflammatory disorders, and anemia. Betanin, a compound isolated from fruits of Opuntia elatior Mill has potent anti-oxidative and anti-inflammatory activity. Recent study from our lab indicated the protective effect of betanin against high glucose induced rat renal epithelial cell fibrosis and matrix accumulation, major features of diabetic nephropathy (DN)...
January 19, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28098144/oligo-fucoidan-prevents-renal-tubulointerstitial-fibrosis-by-inhibiting-the-cd44-signal-pathway
#17
Cheng-Hsien Chen, Yuh-Mou Sue, Chung-Yi Cheng, Yen-Cheng Chen, Chung-Te Liu, Yung-Ho Hsu, Pai-An Hwang, Nai-Jen Huang, Tso-Hsiao Chen
Tubulointerstitial fibrosis is recognized as a key determinant of progressive chronic kidney disease (CKD). Fucoidan, a sulphated polysaccharide extracted from brown seaweed, exerts beneficial effects in some nephropathy models. The present study evaluated the inhibitory effect of oligo-fucoidan (800 Da) on renal tubulointerstitial fibrosis. We established a mouse CKD model by right nephrectomy with transient ischemic injury to the left kidney. Six weeks after the surgery, we fed the CKD mice oligo-fucoidan at 10, 20, and 100 mg/kg/d for 6 weeks and found that the oligo-fucoidan doses less than 100 mg/kg/d improved renal function and reduced renal tubulointerstitial fibrosis in CKD mice...
January 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28098119/acute-tubulointerstitial-nephritis-and-uveitis-syndrome-a-report-on-four-adult-cases
#18
Yosra Ben Ariba, Jannet Labidi, Zied Elloumi, Yosra Selmi, Salah Othmani
Acute tubulointerstitial nephritis and uveitis (TINU) syndrome is a rare disease, generally presenting in children and young women. The interstitial nephritis may precede, follow, or develop concurrent to the uveitis. We report the clinical features and outcomes of four adult patients, aged 41-70 years with the TINU syndrome.
January 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28089251/mutations-in-mapkbp1-cause-juvenile-or-late-onset-cilia-independent-nephronophthisis
#19
Maxence S Macia, Jan Halbritter, Marion Delous, Cecilie Bredrup, Arthur Gutter, Emilie Filhol, Anne E C Mellgren, Sabine Leh, Albane Bizet, Daniela A Braun, Heon Y Gee, Flora Silbermann, Charline Henry, Pauline Krug, Christine Bole-Feysot, Patrick Nitschké, Dominique Joly, Philippe Nicoud, André Paget, Heidi Haugland, Damien Brackmann, Nayir Ahmet, Richard Sandford, Nurcan Cengiz, Per M Knappskog, Helge Boman, Bolan Linghu, Fan Yang, Edward J Oakeley, Pierre Saint Mézard, Andreas W Sailer, Stefan Johansson, Eyvind Rødahl, Sophie Saunier, Friedhelm Hildebrandt, Alexandre Benmerah
Nephronophthisis (NPH), an autosomal-recessive tubulointerstitial nephritis, is the most common cause of hereditary end-stage renal disease in the first three decades of life. Since most NPH gene products (NPHP) function at the primary cilium, NPH is classified as a ciliopathy. We identified mutations in a candidate gene in eight individuals from five families presenting late-onset NPH with massive renal fibrosis. This gene encodes MAPKBP1, a poorly characterized scaffolding protein for JNK signaling. Immunofluorescence analyses showed that MAPKBP1 is not present at the primary cilium and that fibroblasts from affected individuals did not display ciliogenesis defects, indicating that MAPKBP1 may represent a new family of NPHP not involved in cilia-associated functions...
February 2, 2017: American Journal of Human Genetics
https://www.readbyqxmd.com/read/28087478/renal-involvement-in-lysinuric-protein-intolerance-contribution-of-pathology-to-assessment-of-heterogeneity-of-renal-lesions
#20
Emmanuel Estève, Pauline Krug, Aurélie Hummel, Jean-Baptiste Arnoux, Olivia Boyer, Anais Brassier, Pascale de Lonlay, Vincent Vuiblet, Stéphanie Gobin, Rémi Salomon, Christine Piètrement, Jean-Paul Bonnefont, Aude Servais, Louise Galmiche
Lysinuric protein intolerance (LPI) is a rare autosomal recessive disease caused by mutations in the SLC7A7 gene encoding the light subunit of a cationic amino acid transporter. Symptoms mimic primary urea cycle defects but dysimmune symptoms are also described. Renal involvement in LPI was first described in the 1980's. In 2007, it appeared that it could concern as much as 75% of LPI patients and could lead to end stage renal disease. The most common feature is proximal tubular dysfunction and nephrocalcinosis but glomerular lesions are also reported...
January 10, 2017: Human Pathology
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