Abstract:
BACKGROUND:The regulation of renal hemodynamics is closely related to the L-arginine (L-Arg)/nitric oxide (NO) pathway. NO - metabolized from L-Arg - is capable of improving renal function in ischemic and toxic acute renal failure (ARF), while NO synthase (NOS) inhibition induces deterioration in renal function. The mortality rate in patients with septic shock is increased when treated with a non-selective NOS inhibitor, while the incidence of ARF requiring renal replacement therapy is unaffected. To date, there are no studies on the impact of NOS substrate (L-Arg) and inhibitor (L-NMMA) on renal function in early lipopolysaccharide (LPS)-induced ARF. METHODS:ARF was induced by intravenous (i.v.) LPS. Animals were treated with L-Arg, L-NMMA (NOS substrate and inhibitor), a combination of both or saline. Glomerular filtration rate (GFR), urine flow, fractional sodium excretion, excretion of NO metabolism stable end products and blood pressure (BP) were recorded at baseline, after ARF induction, during drug infusion and thereafter. RESULTS:L-Arg induced better GFR during infusion. Excretion of the NO metabolism end products was highest in the L-Arg group and lowest in the NOS inhibitor group. L-Arg administration had no influence on BP, while L-NMMA induced a slight elevation. CONCLUSIONS:We conclude that exogenous L-Arg exerts beneficial effects in early LPS-induced ARF in rats during drug infusion, while NOS inhibition has no influence on GFR. Subcellular compartmentalization of the L-Arg pool in cytoplasma and the rapid utilization of exogenous L-Arg in such a micro-environment could explain this effect, which has been observed in other ARF models and was called the "L-Arg paradox". In further studies the effects of early and prolonged administration of L-Arg in endotoxinemia should be investigated.
journal_name
J Nephroljournal_title
Journal of nephrologyauthors
Schramm L,Weierich T,Heldbreder E,Zimmermann J,Netzer KO,Wanner Csubject
Has Abstractpub_date
2005-07-01 00:00:00pages
374-81issue
4eissn
1121-8428issn
1724-6059journal_volume
18pub_type
杂志文章abstract::In 1998, the Italian Ministry of Health urged the Italian Society of Nephrology (SIN) to draft recommendations for uniform decision-making procedures in the field of dialysis. In accordance with the Ministry's specifications, at the time the Society approved diagnostic protocols regarding clinical questions, but witho...
journal_title:Journal of nephrology
pub_type: 指南,杂志文章,实务指引
doi:
更新日期:2001-03-01 00:00:00
abstract::The analysis of the urinary proteome is a potential source of information regarding the kidney's physiopathology. A clear knowledge of the protein composition of normal urine is an essential prerequisite to looking at its pathology. Technological evolution in the field of proteomics (2-dimensional [2D] electrophoresis...
journal_title:Journal of nephrology
pub_type: 杂志文章,评审
doi:10.5301/jn.5000233
更新日期:2013-07-01 00:00:00
abstract::To maintain divalent ion concentration within the body, a complex sensor has evolved to identify the changes in the extracellular environment and cause the surrounding cells to either secrete or absorb in response to change. An important member of these "sensors" is the calcium-sensing receptor (CaSR), which is consta...
journal_title:Journal of nephrology
pub_type: 杂志文章,评审
doi:
更新日期:2010-11-01 00:00:00
abstract::A definite epidemiological association exists between kidney stone disease and arterial hypertension, but the pathophysiological mechanisms are still not fully understood. Hypercalciuria or inflammation and oxidative stress have been proposed as possible links. However, there is more convincing evidence that the assoc...
journal_title:Journal of nephrology
pub_type: 杂志文章,评审
doi:10.1007/s40620-014-0068-x
更新日期:2014-10-01 00:00:00
abstract::It has been increasingly apparent that end-stage renal disease (ESRD) patients carry an inflammatory burden, which may play a pivotal role in the evolution of not only wasting but also of the massive increase in the relative risk of cardiovascular disease (CVD). Also increased oxidative stress (an impairment of the pr...
journal_title:Journal of nephrology
pub_type: 杂志文章,评审
doi:
更新日期:2004-11-01 00:00:00
abstract::Ferumoxytol is a new product approved for intravenous use by the US Food and Drug Administration (FDA) in the treatment of iron deficiency anemia in adults with chronic kidney disease. This approval was based on data from 3 open-label, randomized, controlled clinical trials. In all of these trials, ferumoxytol was wel...
journal_title:Journal of nephrology
pub_type: 杂志文章,评审
doi:10.5301/jn.5000025
更新日期:2011-11-01 00:00:00
abstract:BACKGROUND:Benefits and risks of angiotensin converting enzyme inhibitors (ACE-I) in advanced chronic kidney disease (CKD) are controversial. We tested the role of ACE-I in slowing the progression of renal damage in a real-world elderly population with CKD stage 5. METHODS:We evaluated all patients consecutively refer...
journal_title:Journal of nephrology
pub_type: 杂志文章
doi:10.1007/s40620-016-0290-9
更新日期:2016-12-01 00:00:00
abstract::Urine samples can be readily obtained from patients in everyday clinical practice. Therefore, the availability of urine allows physicians to obtain relevant clinical information in a timely manner. Since the measurement of urinary protein levels is essential in diagnosing and treating a host of diseases, the potential...
journal_title:Journal of nephrology
pub_type: 杂志文章,评审
doi:10.1007/s40620-020-00735-y
更新日期:2020-04-23 00:00:00
abstract:BACKGROUND:Renal tubular epithelial cells (TECs) function as antigen-presenting cells because they constitutively express MHC class II molecules and have the ability to present peptide antigen to CD4+T cells. However, the costimulatory signals provided by TECs for optimal T-cell activation have not been fully character...
journal_title:Journal of nephrology
pub_type: 杂志文章
doi:
更新日期:2006-07-01 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: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)....
journal_title:Journal of nephrology
pub_type: 杂志文章
doi:
更新日期:2007-01-01 00:00:00
abstract:BACKGROUND AND AIMS:Encapsulating peritoneal sclerosis (EPS) is an uncommon but severe complication of peritoneal dialysis (PD). A reliable screening tool to identify patients at risk of developing or not EPS is currently not available. We aimed to evaluate whether the reduction in dialysate sodium concentration (sodiu...
journal_title:Journal of nephrology
pub_type: 杂志文章
doi:10.1007/s40620-016-0371-9
更新日期:2018-02-01 00:00:00
abstract:BACKGROUND:Patients undergoing chronic hemodialysis (HD) are at increased risk for peripheral artery disease (PAD). Both ankle-brachial index (ABI) and ambulatory blood pressure monitoring (ABPM) in the interdialytic period have been shown to be strong predictors of all-cause mortality. METHODS:This cross-sectional st...
journal_title:Journal of nephrology
pub_type: 杂志文章
doi:10.1007/s40620-016-0322-5
更新日期:2017-06-01 00:00:00
abstract::The pathogenetic role of adiponectin (ADPN) in kidney failure is not yet elucidated, since in vitro and in vivo studies have demonstrated that ADPN exerts both anti-inflammatory and pro-inflammatory effects. Starting from our previous findings demonstrating that HK-2 cells express and secrete ADPN, in this study we in...
journal_title:Journal of nephrology
pub_type: 杂志文章
doi:10.1007/s40620-015-0220-2
更新日期:2016-04-01 00:00:00
abstract::Ambulatory blood pressure monitoring (ABPM) has been developed to overcome recognized deficiencies and inaccuracies of classic (office) BP measurements in the diagnosis and management of hypertension (HTN). Although in adults it has become a valuable tool for the diagnosis and ongoing management of HTN, and its use ha...
journal_title:Journal of nephrology
pub_type: 杂志文章,评审
doi:
更新日期:2004-09-01 00:00:00
abstract:BACKGROUND:Coronary artery disease (CAD) and chronic kidney disease (CKD) lead to high morbidity and mortality rates. Traditional and nontraditional risk factors, hypertension, fluid overloading and anemia can lead to myocardial ischemia, chamber hypertrophy and dilatation, and low left ventricular ejection fraction (L...
journal_title:Journal of nephrology
pub_type: 杂志文章
doi:
更新日期:2010-03-01 00:00:00
abstract::Some patients with essential hypertension manifest increased urinary albumin excretion (UAE). Hypertensive patients with microalbuminuria manifest abnormal circadian variation of blood pressure, increased serum levels of LDL-cholesterol and lipoprotein(a), a greater rise of serum insulin in response to an oral glucose...
journal_title:Journal of nephrology
pub_type: 杂志文章,评审
doi:
更新日期:1997-07-01 00:00:00
abstract:BACKGROUND:Accurate assessment of kidney function level is the key to the identification and management of chronic kidney disease (CKD). Glomerular filtration rate (GFR) is the best measure of overall kidney function in health and disease. There is no consensus about the method to be used routinely to measure and/or es...
journal_title:Journal of nephrology
pub_type: 杂志文章
doi:
更新日期:2006-03-01 00:00:00
abstract::To determine the clinical impact of conversion from C0 to C2 Neoral monitoring, we conducted a 6-month prospective study in 62 stable renal transplant recipients. Neoral was given alone (19%), with steroids (31%), combined with azathioprine (Aza) or mycophenolate mofetil (MMF) (50%). C0 and C2 target ranges were, resp...
journal_title:Journal of nephrology
pub_type: 杂志文章
doi:
更新日期:2004-03-01 00:00:00
abstract:BACKGROUND:We tested the hypothesis that the universal application of myocardial scanning with single-photon emission computed tomography (SPECT) would result in better risk stratification in renal transplant candidates (RTC) compared with SPECT being restricted to patients who, in addition to renal disease, had other ...
journal_title:Journal of nephrology
pub_type: 杂志文章
doi:
更新日期:2010-05-01 00:00:00
abstract:BACKGROUND:This study investigated whether modifications of placental expression of endothelin-1 (ET-1), nitric oxide synthase (NOS) and tissue factor (TF) are associated with abnormal Doppler waveforms. METHODS:Fourteen pre-term severe preeclamptic (PE) women with fetal growth restriction (FGR) and 14 normal preg nan...
journal_title:Journal of nephrology
pub_type: 杂志文章
doi:
更新日期:2003-09-01 00:00:00
abstract:INTRODUCTION:Lack of adherence may influence the efficiency of phosphate binders. Our clinical hypothesis was that if lanthanum carbonate (LC) might offer some advantage over sevelamer (S), that that would be in those patients in whom serum phosphate (P) levels were not controlled by S or in those requiring high doses ...
journal_title:Journal of nephrology
pub_type: 杂志文章
doi:
更新日期:2010-11-01 00:00:00
abstract::With increasingly accurate non-invasive tests, the clinician frequently discovers obstruction of the renal arteries by atherosclerosis. The decision to reverse this obstruction is not straightforward, particularly when blood pressure can be easily controlled with medications. Proper management of this problem requires...
journal_title:Journal of nephrology
pub_type: 杂志文章,评审
doi:
更新日期:1998-05-01 00:00:00
abstract::Some antihypertensive drugs may have a renoprotective effect, that is partially independent of their ability to reduce blood pressure. ACE-inhibitors are safe and effective agents that are capable of reducing proteinuria and preventing CRF progression. The results of the AIPRI extension study suggest that they may als...
journal_title:Journal of nephrology
pub_type: 杂志文章,评审
doi:
更新日期:1998-11-01 00:00:00
abstract:BACKGROUND:Previous in vitro experiments of human polycystic kidney disease (PKD) cells reported that caffeine is a risk factor for the promotion of cyst enlargement in patients with autosomal dominant PKD (ADPKD). The relentless progression of ADPKD inclines the majority of physicians to advocate minimization of caffe...
journal_title:Journal of nephrology
pub_type: 杂志文章
doi:10.1007/s40620-017-0396-8
更新日期:2018-02-01 00:00:00
abstract:BACKGROUND:Patients with IgA nephropathy and histological vasculitic/crescentic lesions have a poor prognosis. We performed a retrospective study to assess whether treatment with steroids and immunosuppressants would preserve renal function by healing these lesions and thereby prevent progression to glomerular sclerosi...
journal_title:Journal of nephrology
pub_type: 临床试验,杂志文章
doi:
更新日期:2000-09-01 00:00:00
abstract:BACKGROUND:Oxidative stress plays a crucial role in chronic complications of diabetes such as diabetic nephropathy (DN), the main cause of renal failure. In diabetes, whether peroxynitrite (ONOO(-)), generated from inducible nitric oxide synthase (iNOS) induced by tumor necrosis factor alpha (TNF-alpha), plays a primar...
journal_title:Journal of nephrology
pub_type: 杂志文章
doi:
更新日期:2009-11-01 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:INTRODUCTION:Medullary cystic kidney disease type 1 (MCKD1; OMIM #174000) is a familial progressive tubule-interstitial nephropathy belonging to the recently defined group of autosomal dominant tubulointerstitial kidney diseases (ADTKD). CASE REPORT:A specific type of cytosine insertion in the extracellular variable n...
journal_title:Journal of nephrology
pub_type: 杂志文章
doi:10.1007/s40620-016-0282-9
更新日期:2016-06-01 00:00:00
abstract:BACKGROUND:The clinical benefits of on-line hemodiafiltration (HDF) versus high-flux membranes hemodialysis (hf-HD) are still debated. In fact, although a superiority of one treatment over the other, especially in terms of mortality, did not emerge from the analysis of clinical trials, improved intradialytic vascular s...
journal_title:Journal of nephrology
pub_type: 杂志文章
doi:10.1007/s40620-018-00581-z
更新日期:2019-06-01 00:00:00