Abstract：
BACKGROUND:The response of proximal convoluted tubules (PCTs) to angiotensin II is mediated by specific type 1 receptors found on both apical and basolateral surface membrane cells. After ligand association with type 1 receptors, different signaling pathways are triggered and determine changes in fluid absorption (Jv). The presence of AT1 and actin cytoskeleton, which are directly related to Jv, can undergo changes in distribution based on the actions of AngII and losartan. METHODS:Using a microperfusion technique and immunohistochemistry analysis, we investigated the basolateral action in PCTs, of AngII and/or losartan on Jv in rabbits, with regard to AT1 and actin cytoskeleton. RESULTS:AngII increased Jv, while in contrast, losartan and combined AngII + losartan led to its decrease. AngII did not change fluorescence intensity of AT1 receptors on tubular membranes, while losartan and AngII + losartan demonstrated a slight increase after treatment. On the other hand, AngII increased the fluorescence intensity of actin cytoskeleton, while losartan induced a decrease. AngII + losartan led actin cytoskeleton having a higher fluorescence intensity than in the control group. CONCLUSIONS:In the present study, we demonstrated that treatment of the basolateral side of PCT cells with AngII and losartan could lead to changes in absorptive tubular function. Important alterations were detected in AT1 receptor fluorescence on the luminal and basolateral membranes, and changes in F-actin cytoskeleton were verified by fluorescence following these protocols.
journal_name
J Nephroljournal_title
Journal of nephrologyauthors
Bertels IM,Gontijo JA,Figueiredo JFsubject
Has Abstractpub_date
2007-01-01 00:00:00pages
29-35issue
1eissn
1121-8428issn
1724-6059journal_volume
20pub_type
杂志文章abstract：:A 59 year-old woman showed rapidly progressive glomerulonephritis during immunotherapy for metastatic renal cell carcinoma. She received unilateral nephrectomy and cytotoxic T lymphocyte (CTL) therapy for the treatment of retroperitoneal lymph node metastasis of renal cell carcinoma. With CTL therapy, her retroperiton...
journal_title：Journal of nephrology
pub_type： 杂志文章
doi：
更新日期：2005-07-01 00:00:00
abstract：:Membranous glomerulopathy (MGN) is a frequent cause for nephrotic syndrome in adults. In this overview, the basic pathogenic features of Heymann nephritis, a "classical" model of MGN in rats, are compared with those of human MGN. While the pathogenic antigen(s) of rat Heymann nephritis (the polyspecific receptor prote...
journal_title：Journal of nephrology
pub_type： 杂志文章,评审
doi：
更新日期：2000-11-01 00:00:00
abstract：BACKGROUND:To report clinical symptoms and outcome of systemic paraphenylene diamine (PPD) intoxication. METHODS:Our study was retrospective. It was conducted over 6 yrs (1994-2000) in the medical intensive care unit (ICU) of a university hospital and it concerned 19 patients hospitalized for systemic PPD intoxication...
journal_title：Journal of nephrology
pub_type： 杂志文章
doi：
更新日期：2005-05-01 00:00:00
abstract：:One of the central functions of the kidney is to excrete low molecular weight, water soluble, plasma, waste products into the urine, whereas macromolecules, the size of albumin and larger, are retained. The flow of the glomerular filtrate is thought to follow an extracellular route, passing through the endothelial fen...
journal_title：Journal of nephrology
pub_type： 杂志文章,评审
doi：
更新日期：2003-11-01 00:00:00
abstract：:The study was conducted to determine the association between mortality, rurality, and distance from the treatment facility of the patients with ESRD. The United States Renal Data System (USRDS) for the year 2007-08 was utilized to conduct analysis of 181,349 subjects. After adjusting for all other covariates, the odds...
journal_title：Journal of nephrology
pub_type： 杂志文章
doi：10.1007/s40620-016-0324-3
更新日期：2016-12-01 00:00:00
abstract：BACKGROUND:Rituximab (RTX) is approved for remission induction in ANCA associated vasculitis (AAV). However, data on use of RTX in patients with severe renal disease is lacking. METHODS:We conducted a retrospective multi-center study to evaluate the efficacy and safety of RTX with glucocorticoids (GC) with and without...
journal_title：Journal of nephrology
pub_type： 杂志文章,多中心研究
doi：10.1007/s40620-015-0208-y
更新日期：2016-04-01 00:00:00
abstract：BACKGROUND:Patients (pts) with primary Membranous nephropathy (MN) have an autoimmune disease caused by autoantibodies against podocyte antigens and 60-80% of them have antibodies directed against the M-type phospholipase A2 receptor (PLA2R). Immunosuppressive treatment is recommended in high-medium risk pts. Recently ...
journal_title：Journal of nephrology
pub_type： 杂志文章
doi：10.1007/s40620-020-00781-6
更新日期：2020-06-27 00:00:00
abstract：BACKGROUND:This study aimed to evaluate the health-related quality of life (HRQOL) and burden on family caregivers of chronic dialysis patients and to analyze which factors were associated with it. METHODS:A cross-sectional multicentric study was carried out with 221 patient/caregiver pairs. General population Short F...
journal_title：Journal of nephrology
pub_type： 杂志文章
doi：
更新日期：2004-11-01 00:00:00
abstract：:Clinical immunology laboratories play an essential role in diagnosis and monitoring of systemic lupus erythematosus (SLE). To obtain the best results in terms of diagnostic performance and clinical usefulness, the following recommendations should be fulfilled: Indirect immunofluorescence on Hep-2 cells remains the met...
journal_title：Journal of nephrology
pub_type： 杂志文章,评审
doi：
更新日期：2002-11-01 00:00:00
abstract：:Hyperuricosuric calcium urolithiasis is a condition of mixed calcium oxalate stones characterized by hyperuricosuria either in isolation or in conjunction with other risk factors for calcium oxalate stones such as hypercalciuria, hyperoxaluria, and hypocitraturia. There are three proposed physicochemical models of pat...
journal_title：Journal of nephrology
pub_type： 杂志文章,评审
doi：10.1007/s40620-018-0469-3
更新日期：2018-04-01 00:00:00
abstract：BACKGROUND:Pericardial effusion in uremic patients (UPE) was first described by R. Bright in 1836. It is generally agreed that patients require emergency pericardial drainage when tamponade signs are present, but in patients with no tamponade the optimal timing for drainage remains unclear. METHODS:To define patients ...
journal_title：Journal of nephrology
pub_type： 杂志文章
doi：10.1007/s40620-014-0107-7
更新日期：2015-02-01 00:00:00
abstract：BACKGROUND:Chronic kidney disease (CKD) is an established risk factor for cardiovascular disease (CVD). In addition, patients with renal disease are exposed to a myriad of risk factors that increase their risk even further. The treatment of risk factors in these patients is paramount to reducing cardiovascular risk and...
journal_title：Journal of nephrology
pub_type： 杂志文章
doi：
更新日期：2005-01-01 00:00:00
abstract：BACKGROUND:In biopsy-proven idiopathic nephrotic syndrome (INS), immunoglobulin M (IgM) and C1q are occasionally deposited in the mesangium. In pediatric nephrology, the significance of mesangial IgM or C1q deposits is controversial, based on previous reports. The aim of this study was to explore the clinical significa...
journal_title：Journal of nephrology
pub_type： 杂志文章
doi：10.5301/jn.5000133
更新日期：2013-03-01 00:00:00
abstract：BACKGROUND:Cell-free DNA (cfDNA) is present in the peritoneal effluent of stable peritoneal dialysis (PD) patients, but there are no data on cfDNA in PD patients with peritonitis. We investigated the variation of peritoneal cfDNA levels subsequent to peritonitis in PD patients. METHODS:We enrolled 53 PD patients: 30 w...
journal_title：Journal of nephrology
pub_type： 杂志文章
doi：10.1007/s40620-015-0212-2
更新日期：2016-02-01 00:00:00
abstract：BACKGROUND:Reset osmostat (RO) occurs in 36% of patients with syndrome of inappropriate antidiuretic hormone secretion (SIADH) and is not often considered when evaluating hyponatremic patients. Patients with RO are not usually treated, but recent awareness that symptoms are associated with mild hyponatremia creates a t...
journal_title：Journal of nephrology
pub_type： 杂志文章
doi：10.5301/jn.5000074
更新日期：2012-09-01 00:00:00
abstract：BACKGROUND:With improvements in technology, renal biopsies have become safer and could potentially be effectively carried out in the outpatient setting. The purpose of our study is to compare the safety and cost of performing outpatient versus inpatient renal biopsies at a single Northern California pediatric hospital....
journal_title：Journal of nephrology
pub_type： 杂志文章
doi：
更新日期：2009-01-01 00:00:00
abstract：BACKGROUND:Mesangial proliferative glomerulonephritis (MePGN) is characterized by excessive mesangial cell proliferation and mesangial matrix expansion, which lead to glomerular sclerosis and obliteration and, in turn, to deteriorating renal function. To identify and quantify the total proteins in renal tissues of MePG...
journal_title：Journal of nephrology
pub_type： 杂志文章
doi：10.5301/jn.5000124
更新日期：2013-01-01 00:00:00
abstract：:Given the alarming predictions of the potentially devastating future epidemic of end-stage renal disease (ESRD), further knowledge is still urgently needed on this topic. The real dimensions of the problem are still unclear. It is difficult to compare Europe and the USA because different criteria are used in data coll...
journal_title：Journal of nephrology
pub_type： 杂志文章
doi：
更新日期：2005-03-01 00:00:00
abstract：BACKGROUND:Atypical haemolytic uremic syndrome (aHUS) is at high risk of relapse at any time, therefore patients require lifelong monitoring. The most appropriate way to monitor patients is not yet clear. Patients could be monitored for relapse by urine dipstick testing for haemoglobinuria based on the hypothesis that ...
journal_title：Journal of nephrology
pub_type： 杂志文章
doi：10.1007/s40620-021-00965-8
更新日期：2021-01-18 00:00:00
abstract：BACKGROUND:IgA nephropathy is one of the most common primary glomerulonephritides, and the clinical course of almost 40% of the patients progresses to end-stage renal disease (ESRD) within 20 years. Angiotensin-converting enzyme (ACE) inhibitors and/ or angiotensin II receptor blockers (ARBs) induce a marked renoprotec...
journal_title：Journal of nephrology
pub_type： 杂志文章,多中心研究,随机对照试验
doi：
更新日期：2009-03-01 00:00:00
abstract：:This review summarizes the plausible mechanisms of carcinogenesis, critically analyzes the literature on cancer risk and discusses issues of cancer screening in chronic dialysis patients. Despite conflicting results among various studies, there is sufficient evidence to conclude that there is a heightened incidence of...
journal_title：Journal of nephrology
pub_type： 杂志文章,评审
doi：
更新日期：2008-03-01 00:00:00
abstract：:Diabetic kidney disease (DKD) affects approximately one-third of patients with diabetes and taking into consideration the high cardiovascular risk burden associated to this condition a multifactorial therapeutic approach is traditionally recommended, in which glucose and blood pressure control play a central role. The...
journal_title：Journal of nephrology
pub_type： 杂志文章,评审
doi：10.1007/s40620-020-00803-3
更新日期：2020-10-01 00:00:00
abstract：:On September 11, 1945, Maria Schafstaat was the first patient who successfully underwent a dialysis treatment for acute kidney injury (AKI). The ingenious design of the first dialysis machine, made of cellophane tubing wrapped around a cylinder that rotated in a bath of fluid, together with the brave determination to ...
journal_title：Journal of nephrology
pub_type： 杂志文章,评审
doi：
更新日期：2010-09-01 00:00:00
abstract：:Structural and functional alterations affecting the aging kidney predispose to an increased risk of acute renal failure (ARF) in the elderly. This is a common problem becoming more relevant because of an increase in life expectancy. The epidemiology of ARF in the elderly is far from being well assessed, because of the...
journal_title：Journal of nephrology
pub_type： 杂志文章,评审
doi：10.5301/jn.5000141
更新日期：2012-01-01 00:00:00
abstract：:Although several in vitro studies and clinical observations suggest that ACE-inhibitors (ACE-I) are a promising treatment for IgA nephropathy (IgAN), meta-analysis of published data is not yet conclusive. Therefore, a European double-blinded, prospective, randomized therapeutic trial was designed to evaluate ACE-I tre...
journal_title：Journal of nephrology
pub_type： 临床试验,杂志文章,多中心研究,随机对照试验
doi：
更新日期：2001-11-01 00:00:00
abstract：BACKGROUND:The effect of uric acid on nocturnal dipping in hypertensive patients is unknown. We analyzed the specific relationship between uric acid and nocturnal dipping status in newly diagnosed essential hypertensive patients with normal renal function. METHODS:Two hundred fifteen patients with newly diagnosed esse...
journal_title：Journal of nephrology
pub_type： 杂志文章
doi：
更新日期：2008-05-01 00:00:00
abstract：:Preemptive isolated liver transplantation (PLTX) can cure the metabolic defect in primary hyperoxaluria type 1 (PH1) but there are no uniformally accepted recommendations concerning the timing of this transplantation procedure. We have performed PLTX successfully in 4 children (age 3-9 years) with PH1 with no mortalit...
journal_title：Journal of nephrology
pub_type： 杂志文章,评审
doi：
更新日期：1998-03-01 00:00:00
abstract：:We describe a patient with renal transplant who developed abdominal pain and acute nephritis in the course of the follow-up. A biopsy of colon lesions revealed CMV inclusions, renal biopsy revealed acute glomerulonephritis with positive CMV-DNA on polymerase chain reaction. The renal disease and bowel symptoms complet...
journal_title：Journal of nephrology
pub_type： 杂志文章
doi：
更新日期：1998-07-01 00:00:00
abstract：:This review focuses on a series of risk factors involved in the pathogenesis of cardiovascular complications in patients undergoing Regular Dialysis Treatment (RDT). Many of them are not modifiable by any pharmacological strategies or dialysis therapy, others - such as phosphate overload - can be corrected successfull...
journal_title：Journal of nephrology
pub_type： 杂志文章,评审
doi：
更新日期：2006-01-01 00:00:00
abstract：OBJECTIVE:To investigate the pregnancy outcomes for patients with stage 3-4 chronic kidney disease (CKD) and the effects of pregnancy on kidney function. METHODS:Clinical data of pregnant women with CKD in the Peking University First Hospital between January 1st 2005 and October 1st 2016 were retrospectively analysed....
journal_title：Journal of nephrology
pub_type： 杂志文章
doi：10.1007/s40620-018-0509-z
更新日期：2018-12-01 00:00:00
