Abstract:
BACKGROUND:The fibrinolytic system plays an important role in degrading fibrin-rich thrombi and in vascular and tissue remodeling. Elevated levels of plasminogen activator inhibitor-1 (PAI-1) can reduce the efficiency of the endogenous fibrinolytic system. Angiotensin (Ang) has been shown to regulate PAI-1 expression via the Ang type 1 (AT1) receptor in some tissues and via the AT4 receptor in cultured endothelium. The purpose of this study was to examine the tissue-specific pattern of PAI-1 expression in response to infusion of Ang II in vivo. METHODS:Adult male Sprague-Dawley rats (N = 5 in each group) were treated with four hours of intravenous infusions of Ang II or vehicle control while mean arterial pressure (MAP) was monitored: group 1, 600 ng/kg/min Ang II; group 2, Ang II + 10 mg/kg of the AT1 receptor antagonist (AT1RA) L158-809 q2 hour; group 3, Ang II + 0.01 to 0.1 mg/kg hydralazine as required to maintain normal blood pressure; and group 4, saline-infused controls. After infusion, tissue was harvested for Northern blotting, immunohistochemical analysis, and in situ hybridization. RESULTS:In group 1, Ang II infusion increased MAP from 105 +/- 8 to 160 +/- 9 mm Hg (mean +/- SE, P < 0. 01). Ang II induced increased expression of PAI-1 mRNA in all tissues examined from 5.1-fold in the heart, 9.7-fold in the kidney, 10.0-fold in the aorta, and up to 30.0-fold in the liver (all P < 0. 01 vs. control). While both AT1RA (group 3) and hydralazine (group 4) prevented Ang II-induced elevation in blood pressure, the Ang II-dependent expression of PAI-1 mRNA was reduced by only AT1 receptor blockade. CONCLUSIONS:We conclude that in the rat, PAI-1 is induced in a variety of tissues by Ang II directly through the AT1 receptor, independent of its effects on blood pressure.
journal_name
Kidney Intjournal_title
Kidney internationalauthors
Nakamura S,Nakamura I,Ma L,Vaughan DE,Fogo ABdoi
10.1046/j.1523-1755.2000.00160.xsubject
Has Abstractpub_date
2000-07-01 00:00:00pages
251-9issue
1eissn
0085-2538issn
1523-1755pii
S0085-2538(15)47094-2journal_volume
58pub_type
杂志文章abstract::Dysfunction and loss of podocytes (glomerular epithelial cells) are the hallmarks of focal segmental glomerulosclerosis (FSGS). In recent years, activation and proliferation of parietal epithelial cells (PECs) have been increasingly appreciated in FSGS. The functional role of PECs in FSGS is still a hotly debated issu...
journal_title:Kidney international
pub_type: 评论,杂志文章
doi:10.1038/ki.2013.66
更新日期:2013-06-01 00:00:00
abstract::Medial arterial calcification involves chondrogenic/osteogenic transdifferentiation of vascular smooth muscle cells (VSMCs). Zhao et al. report that phosphate activates the mammalian target of rapamycin (mTOR) cascade in VSMCs, leading to downregulation of Klotho. Furthermore, rapamycin was shown to halt medial calcif...
journal_title:Kidney international
pub_type: 评论,杂志文章
doi:10.1038/ki.2015.223
更新日期:2015-10-01 00:00:00
abstract::Chronic balance studies were performed in six adrenalectomized patients to investigate the renal and systemic acid-base consequences of mineralocorticoid deficiency in the absence of either glucocorticoid deficiency or parenchymal renal disease. Constant glucocorticoid replacement was provided with dexamethasone, 750 ...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.1980.195
更新日期:1980-12-01 00:00:00
abstract:BACKGROUND:The renin-angiotensin system has been known to regulate blood pressure and body fluid homeostasis. Several lines of evidence have shown that renin gene expression and release are up-regulated by beta-adrenergic stimulation, sodium depletion, and angiotensin converting enzyme inhibition, but down-regulated by...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1046/j.1523-1755.1998.00209.x
更新日期:1998-12-01 00:00:00
abstract::In this mini review, we would like to challenge the well-established 'fact' that lead exposure causes chronic renal failure (CRF). Even though only scarce evidence exists of the relationship between lead and renal failure, a World Health Organization Environmental Health Criteria document summarizes that 'Lead has bee...
journal_title:Kidney international
pub_type: 杂志文章,评审
doi:10.1038/ki.2010.394
更新日期:2011-02-01 00:00:00
abstract::When patients develop acute kidney injury, a small fraction of them will develop end-stage renal disease later. The severity of renal impairment in the remaining patients is uncertain because studies have not carefully examined renal function over time or the precise timing of entry into a late stage of chronic kidney...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.2009.332
更新日期:2009-11-01 00:00:00
abstract::In the course of studying the genetics of chlorambucil mutagenesis, we have uncovered a new model for autosomal polycystic kidney disease (PKD). In the homozygous condition, the gene, jcpk, causes a very severe disease characterized by cysts in all segments of the nephron. Death usually occurs before 10 days of age. E...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.1995.69
更新日期:1995-02-01 00:00:00
abstract:BACKGROUND:Autosomal-dominant medullary cystic kidney disease type 2 (MCKD2) is a tubulointerstitial nephropathy that causes renal salt wasting, hyperuricemia, gout, and end-stage renal failure in the fifth decade of life. The chromosomal locus for MCKD2 was localized on chromosome 16p12. Within this chromosomal region...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1046/j.1523-1755.2003.00269.x
更新日期:2003-11-01 00:00:00
abstract::Vascular calcification is prevalent in dialysis patients and is associated with a high burden of cardiovascular disease. Fetuin-A is a potent inhibitor of vascular calcification, but the precise mechanism by which it mediates vascular calcification in uremia is unclear. Matsui and colleagues demonstrate that circulati...
journal_title:Kidney international
pub_type: 评论,杂志文章
doi:10.1038/ki.2009.52
更新日期:2009-05-01 00:00:00
abstract:BACKGROUND:The genetic dissection of a polygenic, multifactorial, quantitative disease such as arterial hypertension is hampered by a large environmental variance and by genetic heterogeneity. METHODS:To reduce the environmental variance, we measured the pressor response to a saline load (PRSL) and the basal plasma re...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1046/j.1523-1755.2000.00935.x
更新日期:2000-03-01 00:00:00
abstract:BACKGROUND:Nephrotoxic glomerulonephritis is induced by the administration of antibody against the glomerular basement membrane (GBM). We demonstrated previously that Fc receptors for immunoglobulin G (IgG) (FcgammaR) play crucial roles in the induction of accelerated nephrotoxic glomerulonephritis by using FcRgamma-de...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1046/j.1523-1755.2003.00203.x
更新日期:2003-10-01 00:00:00
abstract::To determine the prognosis and risk factors for ischemic heart disease in chronic uremia, a cohort of 432 dialysis patients were followed prospectively from start of dialysis therapy until death or renal transplantation. Baseline demographic, clinical and echocardiographic data were obtained. After the initiation of d...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.1996.201
更新日期:1996-05-01 00:00:00
abstract::Thrombomodulin (TM), an endothelial receptor for thrombin, endowed with a powerful anticoagulant activity, plays an important role in the antithrombogenicity of the vascular endothelium. Its presence within the human renal glomerulus is already known but was thought to be only endothelial. We looked for TM expression ...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.1997.99
更新日期:1997-03-01 00:00:00
abstract::Observational studies are valuable and provocative. We are learning about how we practice peritoneal dialysis (PD) and how we might improve on that practice. For example, outcomes of PD therapy are not worse in large patients. Perhaps this will encourage physicians and patients to utilize PD in large patients. In addi...
journal_title:Kidney international
pub_type: 评论,杂志文章
doi:10.1038/ki.2009.65
更新日期:2009-07-01 00:00:00
abstract::Sudden death is one of the more frequent causes of death for hemodialysis patients, but the underlying mechanisms, contribution of arrhythmia, and associations with serum chemistries or the dialysis procedure are incompletely understood. To study this, implantable loop recorders were utilized for continuous cardiac rh...
journal_title:Kidney international
pub_type: 杂志文章,多中心研究
doi:10.1016/j.kint.2017.11.019
更新日期:2018-04-01 00:00:00
abstract::Polycystin-1 (PC1) and -2 (PC2), products of the PKD1 and PKD2 genes, are mutated in autosomal dominant polycystic kidney disease (ADPKD). They localize to the primary cilia; however, their ciliary function is in dispute. Loss of either the primary cilia or PC1 or PC2 causes cyst formation. However, loss of both cilia...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1016/j.kint.2020.05.049
更新日期:2020-11-01 00:00:00
abstract:BACKGROUND:Several lines of evidence suggest that cellular immune mechanisms contribute to glomerulonephritis. METHODS:The roles of alphabeta and gammadelta T cells in the pathogenesis of glomerulonephritis were investigated in a model of nephrotoxic nephritis in mice deficient in either T-cell population [T-cell rece...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1046/j.1523-1755.2000.00263.x
更新日期:2000-09-01 00:00:00
abstract::The risk of developing contrast media-induced acute renal failure was studied in 49 randomly selected nonazotemic type 2 adult diabetic patients subjected to IVU. There were 19 men and 30 women in the group whose mean age was 62 +/- 10 years (range, 38 to 82 years). In preparation for IVU, patients were neither dehydr...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.1982.91
更新日期:1982-05-01 00:00:00
abstract::Hyperinsulinemia can contribute to hypertension through effects on sodium transport. To test whether the stimulatory effect of insulin on renal proximal tubule sodium transport is preserved in insulin resistance, we compared the effects of insulin on abdominal adipocytes and proximal tubules in rats and humans. Insuli...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.2014.351
更新日期:2015-03-01 00:00:00
abstract::Diabetes is a major cause of chronic kidney disease, and oral antidiabetic drugs are the mainstay of therapy for most patients with Type 2 diabetes. Here we evaluated their role on renal outcomes by using a national Veterans Administration database to assemble a retrospective cohort of 93,577 diabetic patients who fil...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.2011.444
更新日期:2012-04-01 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::Unilateral ureteral obstruction results in marked changes in renal function throughout the nephron, including impaired acid and potassium secretion and salt wastage. The nephron site believed responsible for the acidification defect is the collecting duct. It has been presumed, although not demonstrated, that the cell...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.1990.11
更新日期:1990-01-01 00:00:00
abstract::We examined the role of the plasminogen activator/plasmin system in extracellular matrix (ECM) degradation by human mesangial cells cultured on thin films of 125I-labeled ECM (Matrigel). ECM degradation (release of 125I into the medium) was dependent on exogenous plasminogen, proportional to the number of mesangial ce...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.1995.150
更新日期:1995-04-01 00:00:00
abstract::Recent studies of timing of dialysis initiation have challenged the recent trend to earlier initiation of therapy. The observed outcomes though are a consequence of the balance between the risks of advanced uremia versus the inherent dangers relating to dialysis therapy itself. Many of these risks are inherent in how ...
journal_title:Kidney international
pub_type: 杂志文章,评审
doi:10.1038/ki.2012.133
更新日期:2012-08-01 00:00:00
abstract:BACKGROUND:The aim of this study was to establish whether there is a differential effect of mode of dialysis, hemodialysis (HD), or continuous ambulatory peritoneal dialysis (CAPD) on the dyslipidemia of renal failure. METHODS:The lipoprotein profile was determined in 61 non-diabetic patients on chronic HD (N = 30) an...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1046/j.1523-1755.1999.00375.x
更新日期:1999-04-01 00:00:00
abstract::Autologous and allogeneic bone marrow grafting both require cytoreductive therapy but only the allogeneic procedure requires immunosuppressive agents. Allogeneic bone marrow transplantation has been reported to be associated with a high incidence of both renal failure and veno-occlusive disease (VOD) of the liver, the...
journal_title:Kidney international
pub_type: 临床试验,杂志文章
doi:10.1038/ki.1996.405
更新日期:1996-09-01 00:00:00
abstract:BACKGROUND:Cisplatin (CP) induced polyuria in rats is associated with a reduction in medullary hypertonicity, normally generated by the thick ascending limb (TAL) salt transporters, and the collecting duct urea transporters (UT). To investigate the molecular basis of this abnormality, we determined the protein abundanc...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1046/j.1523-1755.2001.00048.x
更新日期:2001-12-01 00:00:00
abstract::Heme oxygenase (HO) is the rate-limiting enzyme in the degradation of heme, converting heme to biliverdin, during which iron is released and carbon monoxide (CO) is emitted; biliverdin is subsequently converted to bilirubin by biliverdin reductase. At least two isozymes possess HO activity: HO-1 represents the isozyme...
journal_title:Kidney international
pub_type: 杂志文章,评审
doi:10.1038/sj.ki.5001565
更新日期:2006-08-01 00:00:00
abstract:BACKGROUND:The amount of oxalate excreted in urine has a significant impact on calcium oxalate supersaturation and stone formation. Dietary oxalate is believed to make only a minor (10 to 20%) contribution to the amount of oxalate excreted in urine, but the validity of the experimental observations that support this co...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1046/j.1523-1755.2001.00488.x
更新日期:2001-01-01 00:00:00
abstract::Patients with chronic kidney disease (CKD) have a high risk of hyperkalemia, which increases mortality and can lead to renin-angiotensin-aldosterone system inhibitor (RAASi) dose reduction or discontinuation. Patiromer, a nonabsorbed potassium binder, has been shown to normalize serum potassium in patients with CKD an...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.2015.270
更新日期:2015-12-01 00:00:00