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https://www.readbyqxmd.com/read/28230738/clinical-implications-of-20-hydroxyeicosatetraenoic-acid-in-the-kidney-liver-lung-and-brain-an-emerging-therapeutic-target
#1
REVIEW
Osama H Elshenawy, Sherif M Shoieb, Anwar Mohamed, Ayman O S El-Kadi
Cytochrome P450-mediated metabolism of arachidonic acid (AA) is an important pathway for the formation of eicosanoids. The ω-hydroxylation of AA generates significant levels of 20-hydroxyeicosatetraenoic acid (20-HETE) in various tissues. In the current review, we discussed the role of 20-HETE in the kidney, liver, lung, and brain during physiological and pathophysiological states. Moreover, we discussed the role of 20-HETE in tumor formation, metabolic syndrome and diabetes. In the kidney, 20-HETE is involved in modulation of preglomerular vascular tone and tubular ion transport...
February 20, 2017: Pharmaceutics
https://www.readbyqxmd.com/read/28229902/impact-of-high-glucose-and-ages-on-cultured-kidney-derived-cells-effects-on-cell-viability-lysosomal-enzymes-and-effectors-of-cell-signaling-pathways
#2
Giovani B Peres, Nestor Schor, Yara M Michelacci
We have previously reported decreased expression and activities of lysosomal cathepsins B and L in diabetic kidney. Relevant morphological changes were observed in proximal tubules, suggesting that these cells are implicated in the early stages of the disease. The aim of the present study was to investigate the mechanisms that lead to these changes. The effects of high glucose (HG) and advanced glycation end products (AGEs) on cell viability, lysosomal enzymes and other effectors of cell signaling of cultured kidney cells were studied...
February 13, 2017: Biochimie
https://www.readbyqxmd.com/read/28228792/malabsorption-syndrome-as-a-rare-cause-of-nephrocalcinosis
#3
Rui Abreu, Cláudia Bento, Luís Oliveira, Teresa Morgado
Nephrocalcinosis is characterized by calcification of kidney parenchyma and can be caused by an increased amount of calcium, phosphate or oxalate in urinary excretion. We report a 35-year-old female with nephrocalcinosis. She had fitful steatorrhea since last year. Physical examination was normal. Analytic exams found normal renal function and ionogram. Primary hyperparathyroidism, renal tubular acidosis and sarcoidosis were excluded. Urinalysis showed mild hematuria, without proteinuria and 24-hour urine collection exhibited hyperoxaluria...
September 2016: Clinical Cases in Mineral and Bone Metabolism
https://www.readbyqxmd.com/read/28225832/elevated-bilirubin-levels-are-associated-with-a-better-renal-prognosis-and-ameliorate-kidney-fibrosis
#4
Sehoon Park, Do Hyoung Kim, Jin Ho Hwang, Yong-Chul Kim, Jin Hyuk Kim, Chun Soo Lim, Yon Su Kim, Seung Hee Yang, Jung Pyo Lee
BACKGROUND: Bilirubin has been reported to protect against kidney injury. However, further studies highlighting the beneficial effects of bilirubin on renal fibrosis and chronic renal function decline are necessary. METHODS: We assessed a prospective cohort with a reference range of total bilirubin levels. The primary outcome was a 30% reduction in the estimated glomerular filtration rate (eGFR) from baseline, and the secondary outcome was a doubling of the serum creatinine levels, halving of the eGFR and the initiation of dialysis...
2017: PloS One
https://www.readbyqxmd.com/read/28225724/outer-retinal-tubulation-in-retinal-dystrophies
#5
Imoro Z Braimah, Sunila Dumpala, Jay Chhablani
BACKGROUND/PURPOSE: To evaluate the occurrence and characteristics of outer retinal tubulation (ORT) in an Indian population with retinal dystrophies. METHODS: In this retrospective study, 309 eyes of 157 patients with retinal dystrophies including retinitis pigmentosa (RP, 183 eyes), Stargardt disease (STGD, 93 eyes) and Best disease (33 eyes) were reviewed. The demographic details, clinical data including visual acuity, treatment history and good quality spectral domain optical coherence tomography (SD-OCT) scans were collected...
March 2017: Retina
https://www.readbyqxmd.com/read/28223083/characteristics-and-prognosis-of-japanese-female-breast-cancer-patients-the-biobank-japan-project
#6
Koshi Nakamura, Emiko Okada, Shigekazu Ukawa, Makoto Hirata, Akiko Nagai, Zentaro Yamagata, Yutaka Kiyohara, Kaori Muto, Yoichiro Kamatani, Toshiharu Ninomiya, Koichi Matsuda, Michiaki Kubo, Yusuke Nakamura, Akiko Tamakoshi
BACKGROUND: Breast cancer is currently the most common type of cancer in Japanese females. Unlike most other types of cancer, breast cancer develops more frequently in middle-aged females than in elderly females. METHODS: Of all Japanese female breast cancer patients aged ≥20 years whom the BioBank Japan Project originally enrolled between 2003 and 2008, 2034 were registered within 90 days after their diagnosis. We described the lifestyle and clinical characteristics of these patients at study entry...
February 17, 2017: Journal of Epidemiology
https://www.readbyqxmd.com/read/28221140/-urinary-lithiasis-as-a-systemic-disease
#7
Mercedes Leanez Jiménez, Fernando Candau Vargas-Zúñiga, Carlos Reina Ruiz
Urinary lithiasis is a prevalent disorder of uncertain origin which provokes health problems through potential harm to the urinary system, renal parenchyma or the body as a whole, with a frequent trend to relapse. Historically urinary calculi have been studied and treated as an isolated disease but nowadays we know more about their connection with other pathological entities. In a small percentage of patients, diseases like primary hyperparathyroidism, tubular renal acidosis, inflammatory bowel disease or bariatric surgery have a fairly well studied physiopathological link with kidney stones...
January 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28220029/a-novel-inhibitor-of-homeodomain-interacting-protein-kinase-2-mitigates-kidney-fibrosis-through-inhibition-of-the-tgf-%C3%AE-1-smad3-pathway
#8
Ruijie Liu, Bhaskar Das, Wenzhen Xiao, Zhengzhe Li, Huilin Li, Kyung Lee, John Cijiang He
Homeodomain interacting protein kinase 2 (HIPK2) is a critical regulator of multiple profibrotic pathways, including that of TGF-β1/Smad3. Genetic ablation of HIPK2 was shown previously to significantly reduce renal fibrosis in the experimental unilateral ureteral obstruction model and Tg26 mice, a model of HIV-associated nephropathy. To develop specific pharmacologic inhibitors of HIPK2 for antifibrotic therapy, we designed and synthesized small molecule inhibitor compounds on the basis of the predicted structure of HIPK2...
February 20, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28219912/anticoagulant-related-nephropathy-in-a-patient-with-iga-nephropathy
#9
Mário Góis, Ariana Azevedo, Fernanda Carvalho, Fernando Nolasco
Anticoagulant-related nephropathy is a type of acute kidney injury caused by overcoagulation. We describe a case of an 84-year-old man with arterial hypertension, coronary heart disease and atrial fibrillation treated with acenocoumarol, who presented with haematoproteinuria and acute kidney injury during a phase of excessive anticoagulation. In addition to IgA nephropathy, renal biopsy also revealed acute tubular necrosis, red blood cell casts and positive iron staining in tubular cells. After this acute episode, renal function improved and proteinuria decreased below the nephrotic range...
February 20, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28219888/cd74-deficiency-mitigates-systemic-lupus-erythematosus-like-autoimmunity-and-pathological-findings-in-mice
#10
Yi Zhou, Huimei Chen, Li Liu, Xueqing Yu, Galina K Sukhova, Min Yang, Lijun Zhang, Vasileios C Kyttaris, George C Tsokos, Isaac E Stillman, Takaharu Ichimura, Joseph V Bonventre, Peter Libby, Guo-Ping Shi
CD74 mediates MHC class-II antigenic peptide loading and presentation and plays an important role in the pathogenesis of autoimmune diseases, including systemic lupus erythematosus. C57BL/6 Fas(lpr) mice that develop spontaneous lupus-like autoimmunity and pathology showed elevated CD74 expression in the inflammatory cell infiltrates and the adjacent tubular epithelial cells (TECs) in kidneys affected by lupus nephritis but negligible levels in kidneys from age-matched wild-type mice. The inflammatory cytokine IFN-γ or IL-6 induced CD74 expression in kidney TECs in vitro...
February 20, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28214834/kidney-injury-molecule-1-is-elevated-in-nephropathy-and-mediates-macrophage-activation-via-the-mapk-signalling-pathway
#11
Lei Tian, Xinghua Shao, Yuanyuan Xie, Qin Wang, Xiajing Che, Minfang Zhang, Weijia Xu, Yao Xu, Shan Mou, Zhaohui Ni
BACKGROUND/AIMS: Kidney injury molecule-1 (KIM-1) is highly expressed in renal tubular cells after injury and is usually regarded as an early biomarker of acute kidney injury(AKI). The aim of this study was to determine the role of KIM-1 in the development of renal tubular injury Methods: Clinical samples, three different animal models and in vitro experiments were utilized to determine the possible mechanism underlying the involvement of KIM-1 in kidney injury. RESULTS: Both plasma and urinary KIM-1 expression levels were significantly higher in AKI and chronic kidney disease (CKD) patients than in healthy volunteers, and urinary KIM-1 expression was significantly higher in CKD patients than in AKI patients...
February 13, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214210/pathologic-features-of-colorectal-carcinomas-associated-with-crohn-s-disease-in-korean-population
#12
Jiyoon Kim, Ho-Su Lee, Sang Hyoung Park, Suk-Kyun Yang, Byong Duk Ye, Dong-Hoon Yang, Kyung-Jo Kim, Jeong-Sik Byeon, Yong Sik Yoon, Chang Sik Yu, Jihun Kim
BACKGROUND: Colorectal cancer (CRC) has been known to complicate Crohn's disease (CD). Several reports in Western population revealed that CRC in CD were characterized by much younger onset and equal distribution of tumors along the entire colon. However, clinicopathologic features of CD-associated CRC in Korean population have not been well documented yet. METHODS: Among 2968 Korean CD patients, 16 patients (0.54%) were found to develop CRC during follow up. We reviewed clinicopathologic features of the 16 CRC patients...
December 21, 2016: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28213465/epithelial-morphogenesis-during-liver-development
#13
Naoki Tanimizu, Toshihiro Mitaka
Tissue stem/progenitor cells supply multiple types of epithelial cells that eventually acquire specialized functions during organ development. In addition, three-dimensional (3D) tissue structures need to be established for organs to perform their physiological functions. The liver contains two types of epithelial cells, namely, hepatocytes and cholangiocytes, which are derived from hepatoblasts, fetal liver stem/progenitor cells (LPCs), in mid-gestation. Hepatocytes performing many metabolic reactions form cord-like structures, whereas cholangiocytes, biliary epithelial cells, form tubular structures called intrahepatic bile ducts...
February 17, 2017: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/28210575/cytokeratin-immunoprofile-of-primary-and-metastatic-adenoid-cystic-carcinoma-of-salivary-glands-a-report-of-two-cases
#14
Cibele Pidorodeski Nagano, Cláudia Malheiros Coutinho-Camillo, Clovis Antônio Pinto, Fernando Augusto Soares, Filipa Santos, Isabel Fonseca, Silvia Vanessa Lourenço
Distant metastases from salivary gland tumors are considered infrequent: the incidence of distant metastases ranges from 24% to 61% according to different histotypes and to the site of the primary mass. The most common site of distant metastases due to salivary gland malignancies is the lung. From the pathology point of view, cytokeratins (CK) are important differentiation markers in salivary gland tumors, which are often used for the diagnostic process. Their employment also may be useful to identify and confirm the diagnosis of their distant metastases...
October 2016: Autopsy & case reports
https://www.readbyqxmd.com/read/28209087/the-effect-of-hypericum-perforatum-on-kidney-ischemia-reperfusion-damage
#15
Murat Cakir, Halil Duzova, Işil Baysal, Cemile Ceren Gül, Gülbahar Kuşcu, Fatma Kutluk, Hilal Çakin, Şifanur Şeker, Esranur İlbeği, Seda Uslu, Umut Avci, Samet Demir, Cihan Akinci, Sercan Atli
It has been revealed in recent studies that Hypericum Perforatum (HP) is influential on cancer, inflammatory diseases, bacterial and viral diseases, and has neuroprotective and antioxidant properties. In this study, we investigated the effect of HP, which is known to have antioxidant and anti-inflammatory effects, on kidney I/R damage. Male Sprague-Dawley rats were divided into three groups, and each of the groups had eight rats: The Control Group; the Ischemia/Reperfusion (I/R) Group; and the IR + HP Group which was treated with 50 mg/kg of HP...
November 2017: Renal Failure
https://www.readbyqxmd.com/read/28207778/neutrophil-gelatinase-associated-lipocalin-levels-are-u-shaped-in-the-ludwigshafen-risk-and-cardiovascular-health-luric-study-impact-for-mortality
#16
Rainer P Woitas, Hubert Scharnagl, Marcus E Kleber, Graciela E Delgado, Tanja B Grammer, Martin Pichler, Bernhard K Krämer, Winfried März, Tatjana Stojakovic
INTRODUCTION: Neutrophil gelatinase-associated lipocalin (NGAL) is a glycoprotein released by damaged renal tubular cells and mature neutrophils. It is elevated in kidney injury, but also in patients with coronary artery disease (CAD) and myocardial infarction. We investigated the prognostic value of NGAL for total and cardiovascular mortality in patients undergoing coronary angiography without history of renal insufficiency at inclusion into the study. PARTICIPANTS: The LURIC study is an ongoing prospective cohort study of patients referred for coronary angiography and is designed to evaluate determinants of cardiovascular health...
2017: PloS One
https://www.readbyqxmd.com/read/28203565/tubular-dysfunction-mimicking-dent-s-disease-in-2-infants-born-with-extremely-low-birth-weight
#17
Midori Awazu, Mie Arai, Shoko Ohashi, Hirotaka Takahashi, Takashi Sekine, Kazushige Ikeda
Two preterm infants, with extremely low birth weight born at gestational weeks 24 and 25, showed generalized proximal tubular dysfunction during their stay in the neonatal intensive care unit, including glucosuria, low molecular weight proteinuria, phosphaturia, uricosuria, enzymuria (elevated urine N-acetyl-β-D-glucosaminidase), panaminoaciduria, and hypercalciuria, associated with renal calcification. Renal tubular acidosis was not present in either patient. DNA mutation analysis for Dent's disease, performed in patient 1, was negative...
January 2017: Case Reports in Nephrology and Dialysis
https://www.readbyqxmd.com/read/28203361/long-term-iron-polymaltose-infusions-associated-with-hypophosphataemic-osteomalacia-a-report-of-two-cases-and-review-of-the-literature
#18
REVIEW
Ramy H Bishay, Kirtan Ganda, Markus J Seibel
Iron-induced hypophosphataemic osteomalacia remains under-recognized as a potential complication of parenteral iron therapy. We here report two cases of symptomatic hypophosphataemic osteomalacia with multiple insufficiency fractures in the context of chronic gastrointestinal blood loss, necessitating monthly iron polymaltose infusions over prolonged periods of time. Respective blood tests revealed severe hypophosphataemia [0.29 and 0.43; normal range (NR) 0.8-1.5 mmol/l] in the presence of normal serum calcium and 25-hydroxy vitamin D levels...
January 2017: Therapeutic Advances in Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28202497/deficiency-of-the-angiotensinase-aminopeptidase-a-increases-susceptibility-to-glomerular-injury
#19
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/28202171/residual-renal-function-a-paradigm-shift
#20
Jerome Lowenstein, Jared J Grantham
Residual renal function (RRF) in patients undergoing dialysis treatments is currently viewed as glomerular filtrate that has escaped tubular reabsorption. RRF has been quantified as a clearance of urea or creatinine, or urea + creatinine. A major paradigm shift has followed the recognition that a substantial number of organic anion retention solutes (possible "uremic toxins") are protein-bound and therefore are not readily filtered. These protein-bound aryl compounds are secreted by renal tubular organic anion transporters (OATs)...
March 2017: Kidney International
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