Abstract:
:Albumin is an acceptor of lysophosphatidylcholine (LPC), product of the lecithin:cholesterol acyl transferase (LCAT) reaction, and it has been suggested that low LCAT activity and reduced cholesterol esterification rate in patients with the nephrotic syndrome may be linked to depletion of albumin. Effects of low plasma albumin levels on LCAT activity, cholesterol esterification rates and LPC-binding were therefore studied in hyperlipidemic nephrotic (NS) and analbuminemic (NAR) rats. LPC-binding was also measured in normoalbuminemic rats with dietary hypercholesterolemia. Remarkably, LCAT activity, measured with excess exogenous substrate, was not decreased but increased in both NAR and NS rats. Molar esterification rates with endogenous substrate were increased in NAR but normal in NS rats. In normoalbuminemic rats, with or without hypercholesterolemia, LPC was primarily found in the lipoprotein-deficient plasma and the HDL3 fraction. In NAR and NS rats LPC levels were increased in lipoproteins (notably in LDL and HDL2), but, in marked contrast to normoalbuminemic rats, decreased in lipoprotein-deficient plasma. Phosphatidylcholine, quantitatively the major phospholipid, was distributed proportionally over the lipoproteins in NS, NAR and control rats. Therefore, in hypoalbuminemia and analbuminemia LPC is mainly bound to lipoproteins, which is in contrast to the paucity of LPC in these particles in normoalbuminemic rats. Cholesterol esterification in nephrotic plasma is thus not impaired by lack of an acceptor for LPC-binding. The absence of an increase in molar cholesterol esterification in conjunction with increased LCAT activity points to a possible defect of the substrate for this reaction in nephrotic plasma. Increased LPC levels in LDL, a characteristic of oxidized LDL, may be a hitherto unrecognized atherosclerotic risk factor in the nephrotic syndrome.
journal_name
Kidney Intjournal_title
Kidney internationalauthors
Joles JA,Willekes-Koolschijn N,Scheek LM,Koomans HA,Rabelink TJ,van Tol Adoi
10.1038/ki.1994.248subject
Has Abstractpub_date
1994-07-01 00:00:00pages
97-104issue
1eissn
0085-2538issn
1523-1755pii
S0085-2538(15)58529-3journal_volume
46pub_type
杂志文章abstract::We have previously identified the engulfment and cell motility 1 (ELMO1) as a susceptibility gene for diabetic nephropathy. To elucidate the role of ELMO1 in the pathogenesis of chronic renal injury, we examined the expression of Elmo1 in the kidney of a rat model for chronic glomerulonephritis (uninephrectomy plus an...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/sj.ki.5001939
更新日期:2006-11-01 00:00:00
abstract::We previously reported that oxidative stress and renal tubular damage occur in chronic hyperoxaluric rats. However, the in vivo responses of renal epithelial cells after vitamin E administration and their correlations with calcium oxalate (CaOx) crystal formation have not been evaluated. Male Wistar rats received 0.75...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/sj.ki.5001651
更新日期:2006-08-01 00:00:00
abstract::Circulating parathyroid hormone (PTH) shows a complex relationship with hard outcomes in subjects with chronic kidney disease (CKD). Moreover, intervention studies directly targeting PTH failed to yield unequivocal results. Disturbed PTH metabolism, posttranslational modifications of PTH, and end-organ hyporesponsiven...
journal_title:Kidney international
pub_type: 杂志文章,评审
doi:10.1016/j.kint.2016.06.041
更新日期:2016-12-01 00:00:00
abstract:BACKGROUND:In the United States, infection is second to cardiovascular disease as the leading cause of death in patients with end-stage renal disease (ESRD), and septicemia accounts for more than 75% of this category. This increased susceptibility to infections is partly due to uremia, old age, and comorbid conditions....
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1111/j.1523-1755.2000.00337.x
更新日期:2000-10-01 00:00:00
abstract::In organ donation, the donor, recipient, and transplant team must all accept potential health risks to the donor and any uncertainties. To gauge these risks, we surveyed general altruism and risk-taking behaviors in 112 potential donors, 111 potential recipients, and 51 transplant professionals. Next, participants ind...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.2008.65
更新日期:2008-05-01 00:00:00
abstract:BACKGROUND:Rats that recover from acute puromycin nephrosis later develop widespread glomerular and tubulointerstitial injury. The current study sought to identify structural changes present in the recovery phase that could precipitate progressive renal disease. METHODS:Stereologic studies were performed 10 weeks afte...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1046/j.1523-1755.2002.00481.x
更新日期:2002-08-01 00:00:00
abstract:BACKGROUND:alpha 2 Macroglobulin (alpha 2M), a protease inhibitor, is often increased in plasma of patients with the nephrotic syndrome. Although it has been speculated that synthesis is increased, no direct measurements have been performed. METHODS:alpha 2M synthesis in both normal subjects (N = 4) and nephrotic pati...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1046/j.1523-1755.1998.00018.x
更新日期:1998-08-01 00:00:00
abstract::Inflammation is a protective response to remove dangerous stimuli from the body. The multiprotein complex called the inflammasome regulates inflammation through the cleavage of proinflammatory cytokines into mature forms. Shahzad et al. unravel the importance of the Nlrp3 inflammasome, especially activated in glomerul...
journal_title:Kidney international
pub_type: 评论,杂志文章
doi:10.1038/ki.2014.322
更新日期:2015-01-01 00:00:00
abstract:BACKGROUND:Wegener's granulomatosis (WG) is a rare systemic autoimmune disease characterized by small-vessel vasculitis leading to organ damage and the presence of antineutrophil cytoplasmic autoantibodies (ANCAs). ANCAs were shown to be involved in the pathogenesis of the disease by increasing adhesion of polymorphonu...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1046/j.1523-1755.2000.00430.x
更新日期:2000-12-01 00:00:00
abstract::Atypical hemolytic uremic syndrome and thrombotic thrombocytopenic purpura have traditionally been considered separate entities. Defects in the regulation of the complement alternative pathway occur in atypical hemolytic uremic syndrome, and defects in the cleavage of von Willebrand factor (VWF)-multimers arise in thr...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1016/j.kint.2016.03.023
更新日期:2016-07-01 00:00:00
abstract::A morphometric technique is used to estimate the absolute and relative surface areas of the brush border microvilli and cell walls bordering lateral intercellular spaces. In isolated, perfused proximal tubule from rabbit, the luminal and lateral surfaces are equal in area. For proximal convoluted tubules (PCT) each su...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.1975.125
更新日期:1975-12-01 00:00:00
abstract:BACKGROUND:Tacrolimus has a narrow therapeutic window, and bioavailability is known to vary considerably between renal transplant recipients. Most centers still rely on measurement of trough levels, but there are conflicting reports on the correlation between tacrolimus trough levels and systemic exposure, as measured ...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1111/j.1523-1755.2005.00352.x
更新日期:2005-06-01 00:00:00
abstract::Pain is a common complaint in patients with autosomal-dominant polycystic kidney disease, and a systematic approach is needed to differentiate the etiology of the pain and define an approach to management. A thorough history is the best clue to the multifactorial causes of the pain, superimposed upon an understanding ...
journal_title:Kidney international
pub_type: 杂志文章,评审
doi:10.1046/j.1523-1755.2001.00985.x
更新日期:2001-11-01 00:00:00
abstract::Congenital chloride diarrhea is due to mutations in the intestinal Cl(-)/HCO(3)(-) exchange (SLC26A3) which results in sodium chloride and fluid depletion leading to hypochloremic and hypokalemic metabolic alkalosis. Although treatment with sodium and potassium chloride offers protection from renal involvement in chil...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.2008.401
更新日期:2008-10-01 00:00:00
abstract::The adaptation of erythropoietin production to oxygen supply is determined by the abundance of hypoxia-inducible factor (HIF), a regulation that is induced by a prolyl hydroxylase. To identify cells that express HIF subunits (HIF-1alpha and HIF-2alpha) and erythropoietin, we treated Sprague-Dawley rats with the prolyl...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.2009.460
更新日期:2010-02-01 00:00:00
abstract:BACKGROUND:The pathophysiology of hypertension in patients with chronic kidney disease (CKD) is largely attributed to positive sodium balance. It is unclear how loop diuretics affect fluid volume compartments, especially with respect to their antihypertensive effect. METHODS:Subjects with CKD were administered a singl...
journal_title:Kidney international
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1046/j.1523-1755.2003.00273.x
更新日期:2003-11-01 00:00:00
abstract::Pain was surveyed via structured interview and the McGill Pain Questionnaire in 53 dialysis and 27 transplant patients. Increased patient control over the dialysis procedure was not associated with a reduction in pain though perceived control may have been. Compliance with the dialysis regimen did not predict pain and...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.1982.108
更新日期:1982-06-01 00:00:00
abstract::Obesity could affect associations between creatinine generation, estimated body surface area, and excretory burden, with effects on chronic kidney disease assessment. We therefore examined the impact of obesity on the performances of estimated glomerular filtration rate (eGFR), the urine albumin:creatinine ratio (ACR)...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.2014.112
更新日期:2014-12-01 00:00:00
abstract:BACKGROUND:Human immunodeficiency virus-associated nephropathy (HIVAN) has become the third leading cause of end-stage renal disease (ESRD) in African Americans, and is expected to grow exponentially. Highly active antiretroviral therapy (HAART) has significantly prolonged the survival of patients with HIV infection. D...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1111/j.1523-1755.2005.00245.x
更新日期:2005-04-01 00:00:00
abstract:BACKGROUND:Long-term graft function is the result of multiple parameters, including both immune and non-immune components, which have a beneficial or detrimental potential. Among these, despite its frequency and theoretical interest (expression of "danger signals" in the graft itself), the effects of acute graft pyelon...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1046/j.1523-1755.2002.00323.x
更新日期:2002-05-01 00:00:00
abstract:BACKGROUND:Little information is available regarding cardiac morbidity and mortality in children with end-stage renal disease. We sought to determine the incidence of cardiac morbidity and mortality in pediatric chronic dialysis patients. METHODS:Medicare incident pediatric (0 to 19 years) dialysis patients from 1991 ...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1046/j.1523-1755.2002.00472.x
更新日期:2002-08-01 00:00:00
abstract:BACKGROUND:The debate on the association between nonphenacetin-containing combined analgesics and renal disease has lasted for several years. METHOD:A peer review committee of scientists, selected jointly by the regulatory authorities of Germany, Switzerland, and Austria and the pharmaceutical industry was asked to cr...
journal_title:Kidney international
pub_type: 共识发展会议,杂志文章,评审
doi:10.1046/j.1523-1755.2000.00410.x
更新日期:2000-12-01 00:00:00
abstract::The kidneys excrete the daily acid load mainly by generating and excreting ammonia but the underlying molecular mechanisms are not fully understood. Here we evaluated the role of the inwardly rectifying potassium channel subunit Kir4.2 (Kcnj15 gene product) in this process. In mice, Kir4.2 was present exclusively at t...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1016/j.kint.2019.09.028
更新日期:2020-02-01 00:00:00
abstract::Our findings indicate that hypoaldosteronism occurs commonly (23/31 patients) in hyperkalemic patients with chronic renal insufficiency and that the deficiency of aldosterone contributes to the pathogenesis of the hyperkalemia. In most patients (83%), hypoaldosteronism could be accounted for by deficient renal secreti...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.1980.11
更新日期:1980-01-01 00:00:00
abstract::The influence of transforming growth factor beta 1 (TGF-beta 1) and of dexamethasone on fibronectin (FN) synthesis of human renal tubular epithelial cells in culture (TEC) was studied. Cocultivation with TGF-beta 1 increased the steady state level of FN RNA within 24 to 48 hours. By PCR and Northern blotting it was fo...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.1995.479
更新日期:1995-12-01 00:00:00
abstract::Levels of prepro epidermal growth factor (EGF) mRNA in renal cortical tissue and urinary EGF excretion have been determined during cisplatin and ischemia-induced acute renal failure in the rat. Northern analysis of polyadenylated RNAs of kidney cortical tissue showed diminished renal preproEGF mRNA in rats injected wi...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.1989.266
更新日期:1989-11-01 00:00:00
abstract:BACKGROUND:Podocyte loss contributes to the development of glomerulosclerosis. Although podocytes have been detected in the urine in certain glomerular diseases, the viability of detached cells is not known. METHODS:Urine was collected from rats with experimental membranous nephropathy [passive Heymann nephritis (PHN)...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1046/j.1523-1755.2003.00217.x
更新日期:2003-10-01 00:00:00
abstract:BACKGROUND:The peritoneum is progressively denuded of its mesothelial cell monolayer in patients on continuous ambulatory peritoneal dialysis (CAPD). These alterations of the mesothelium cause membrane dysfunction and progressive peritoneal fibrosis. Integrins regulate cell motility and play an important role in wound ...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1046/j.1523-1755.2003.00772.x
更新日期:2003-02-01 00:00:00
abstract::Intravenous conjugated estrogens reduce the prolonged bleeding time in uremic patients and in a rat model of uremia. However, estrogens have major side effects related to their hormonal activity. We investigated whether a beta-resorcylic acid lactone, zeranol (a compound with close spatial similarity to estrogens but ...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.1990.172
更新日期:1990-07-01 00:00:00
abstract::Clofibrate, a peroxisome proliferator-activated receptor-alpha (PPAR alpha) agonist, increases renal tubular cytochrome P450 4a (Cyp4a) expression thereby increasing 20-hydroxyeicosatetraenoic acid (20-HETE) production. To determine if clofibrate affects blood pressure regulation we studied mice with DOCA-salt induced...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.2008.300
更新日期:2008-10-01 00:00:00