Abstract：
BACKGROUND:Aldosterone has been known for many years to increase sodium (Na(+)) reabsorption by the distal nephron. The present in vitro experiments investigated the effect of the hormone on calcium (Ca(2+)) transport by the luminal membrane of the rabbit nephron, independent of any systemic influence. METHODS:Proximal and distal tubules were incubated with either aldosterone or the carrier. The luminal membranes of these tubules were purified, vesiculated, and (45)Ca uptake by these vesicles was subsequently measured. RESULTS:Treatment of the distal tubules with 10(-8) mol/L aldosterone enhanced both 0.1 and 0.5 mmol/L Ca(2+) transport. The hormone action was abolished by tyrosine kinase inhibitors. The presence of Na(+) in the medium decreased both Ca(2+) uptake and the effect of aldosterone. This hormone action was already significant after a 5-minute incubation, with a half-maximal efficient concentration of approximately 10(-10) mol/L. Ca(2+) transport by the distal membranes presents a dual kinetics. Aldosterone enhanced the Vmax values of both components of these kinetics. Mibefradil abolished the action of aldosterone on 0.5 mmol/L but not on 0.1 mmol/L Ca(2+) uptake, suggesting that the targeted low affinity channel belongs to the T-type, whereas diltiazem prevented the hormone action exclusively at the low Ca(2+) concentration (0.1 mmol/L), indicating an effect on a high affinity L-type channel. CONCLUSION:Aldosterone increases Ca(2+) transport by the distal luminal membranes through L- and T-type Ca(2+) channels, and this action requires tyrosine kinase activity.
journal_name
Kidney Intjournal_title
Kidney internationalauthors
Leclerc M,Brunette MG,Couchourel Ddoi
10.1111/j.1523-1755.2004.00725.xsubject
Has Abstractpub_date
2004-07-01 00:00:00pages
242-50issue
1eissn
0085-2538issn
1523-1755pii
S0085-2538(15)50024-0journal_volume
66pub_type
杂志文章abstract：:In the epidemiologic study of end-stage renal disease (ESRD), accurate adjustment for comorbidity is essential to controlling bias in the comparison of outcomes across groups of patients or dialysis facilities. Liu et al. derive and validate a novel comorbidity index using data from the United States Renal Data System...
journal_title：Kidney international
pub_type： 评论,杂志文章
doi：10.1038/ki.2009.431
更新日期：2010-01-01 00:00:00
abstract：:In chronic serum sickness, glomerular immune complexes form, yet C57BL/6 mice do not develop glomerulonephritis unless complement factor H (CfH) is absent, indicating the relevance of complement regulation. Complement receptor 3 (CD11b) and Fcγ receptors on leukocytes, and CfH on platelets, can bind immune complexes. ...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.2014.373
更新日期：2015-05-01 00:00:00
abstract：:Chronic cyclosporine (CsA) nephrotoxicity is a major complication of heart, bone marrow, and renal transplantation, and is characterized in humans by striped interstitial fibrosis, tubular dilatation and atrophy, and hyalinization of hilar arterioles. This last feature is highly specific for cyclosporine injury and ha...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1995.311
更新日期：1995-08-01 00:00:00
abstract：BACKGROUND:While the progression of renal disease to end stage is strongly correlated with tubulointerstitial changes, the control of the fibrotic process within the interstitium is poorly understood. Basic fibroblast growth factor (FGF-2) has been implicated as a major growth factor involved in fibroblast activation a...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1046/j.1523-1755.2001.00723.x
更新日期：2001-06-01 00:00:00
abstract：:When the endotoxin-lipopolysaccharide (LPS) derived from the cell wall of gram-negative bacteria is given to the rat in vivo, there are prompt, marked decreases in glomerular filtration rate (GFR), renal blood flow (RBF) and % Na+ reabsorption (%T-Na+). However, it has not been determined whether the endotoxin itself ...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1990.105
更新日期：1990-05-01 00:00:00
abstract：:Peptides representing potential antigenic regions of the NC-1 and 7-S domains of the human alpha 1 and alpha 2, and bovine alpha 3 chains of type IV collagen were synthesized either chemically or by the recombinant DNA technique and tested by ELISA using antibodies raised in rabbits against the whole type IV collagen ...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1993.16
更新日期：1993-01-01 00:00:00
abstract：:Metabolic changes due to chronic renal failure (CRF) were studied in isolated liver cells. In 14 CRF and 14 sham-operated rats, liver cells were isolated by the Berry and Friend method and incubated with various substrates in order to study gluconeogenesis, ureagenesis, ketogenesis, oxygen consumption as well as cytos...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1995.215
更新日期：1995-06-01 00:00:00
abstract：:The X-linked Hyp and Gy mutations are murine homologues of X-linked hypophosphatemia (XLH), a dominant disorder of phosphate (Pi) homeostasis characterized by growth retardation, rickets, hypophosphatemia and decreased renal tubular maximum for Pi reabsorption relative to glomerular filtration rate (Tmp/GFR). In Hyp a...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1996.149
更新日期：1996-04-01 00:00:00
abstract：:Here we studied a possible association between low parathyroid hormone (PTH) status and mortality in incident patients undergoing hemodialysis . A total of 1983 patients were included at baseline and prospectively followed for 24 months. Patients were classified according to their Kidney Disease: Improving Global Outc...
journal_title：Kidney international
pub_type： 杂志文章,多中心研究
doi：10.1016/j.kint.2015.12.001
更新日期：2016-03-01 00:00:00
abstract：BACKGROUND:Cux-1 is a murine homeobox gene that is highly expressed in the nephrogenic zone of the developing kidney. Transgenic mice ectopically expressing Cux-1 develop renal hyperplasia associated with down-regulation of the cyclin kinase inhibitor p27. Because the reduction of p27 has been associated with mesangial...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1046/j.1523-1755.2003.00889.x
更新日期：2003-04-01 00:00:00
abstract：:Females across their lifespan and certain male populations are susceptible to urinary tract infections (UTI). The influence of female vs. male sex on UTI is incompletely understood, in part because preclinical modeling has been performed almost exclusively in female mice. Here, we employed established and new mouse mo...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1016/j.kint.2018.04.023
更新日期：2018-09-01 00:00:00
abstract：BACKGROUND:Prolactin (PRL), originally identified as an anterior pituitary hormone exhibiting lactogenic activity, is now recognized as a versatile hormone expressed in a wide variety of tissues. METHODS:In this study, the expression of PRL in the mouse kidney was investigated by solution-phase and in situ reverse tra...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1046/j.1523-1755.1999.055003833.x
更新日期：1999-03-01 00:00:00
abstract：:Extracellular fluid volume expansion is known to produce exaggerated natriuresis in essential hypertension. In order to assess the role of hemodynamic and intrarenal physical factors upon natriuretic response to central volume expansion, two hour water immersion (WI) experiments were made in six uncomplicated essentia...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1988.79
更新日期：1988-04-01 00:00:00
abstract：:Osteopontin is an arginine-glycine-aspartate (RGD) containing secreted phosphoprotein recently shown to stimulate a local macrophage influx when injected subcutaneously in mice. We examined the effect of angiotensin II infusion on renal injury and osteopontin expression in the rat kidney by in situ hybridization and i...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1994.67
更新日期：1994-02-01 00:00:00
abstract：:Hypoalbuminemia is the most powerful predictor of mortality in end-stage renal disease. Since protein-calorie malnutrition can decrease albumin synthesis it is assumed that hypoalbuminemia results principally from malnutrition in these patients, but albumin synthesis may also be decreased as part of the acute-phase re...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1995.321
更新日期：1995-08-01 00:00:00
abstract：:Current practice recommends metabolic evaluation of patients who have formed multiple renal stones, but not those with one stone or temporally remote stones. This presumes that recentness and recurrence imply greater risk of new future stones. We hypothesize that number of stones reflects how long patients are permitt...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1994.224
更新日期：1994-06-01 00:00:00
abstract：:The mean renal tubular diameters, number of tubules per unit of cross-sectional area, and fraction of the total volume occupied by each medullary structure were determined at various levels of the renal medulla of the rat and rabbit. Statistical estimates of anatomic variables were made using spatial sampling techniqu...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1977.118
更新日期：1977-11-01 00:00:00
abstract：:Tissandié and colleagues report in this issue on their studies of IgA1 glycosylation and biological activities of IgA1-containing circulating immune complexes in patients with alcoholic cirrhosis who developed secondary renal disease with IgA deposits, secondary IgA nephropathy. Their seminal findings demonstrate abno...
journal_title：Kidney international
pub_type： 评论,杂志文章
doi：10.1038/ki.2011.302
更新日期：2011-12-01 00:00:00
abstract：:Incompatible donor/recipient pairs with broadly sensitized recipients have difficulty finding a crossmatch-compatible match, despite a large kidney paired donation pool. One approach to this problem is to combine kidney paired donation with lower-risk crossmatch-incompatible transplantation with intravenous immunoglob...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.2013.206
更新日期：2013-11-01 00:00:00
abstract：BACKGROUND:Fractalkine is a newly identified T-cell and monocyte/macrophage (Mphi) chemokine with a transmembrane domain and is a cell-surface protein on activated endothelium. It can mediate adhesion of cells expressing the fractalkine receptor CX3CR1. These unique features make fractalkine well suited for leukocyte r...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1046/j.1523-1755.1999.00604.x
更新日期：1999-08-01 00:00:00
abstract：:Renal sodium reabsorption is a key determinant of final urine concentration. Our aim was to determine whether differences existed between aged and young rats in their response to water restriction with regard to the regulation of abundance of any of the major distal renal sodium transporter proteins. Male Fisher 344 x...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/sj.ki.5000076
更新日期：2006-01-01 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：:The possibility that hypercalciuria could cause calcium stone formation through a mechanism other than by increasing urinary saturation of stone-forming calcium salts was explored. The effect of increasing calcium concentration on the inhibitor activity against the spontaneous precipitation of calcium oxalate was exam...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1988.100
更新日期：1988-05-01 00:00:00
abstract：:Innate lymphoid cells are a recently recognized group of immune cells with critical roles in tissue homeostasis and inflammation. Regulatory innate lymphoid cells are a newly identified subset of innate lymphoid cells, which play a suppressive role in the innate immune response, favoring the resolution of intestinal i...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1016/j.kint.2019.07.019
更新日期：2020-01-01 00:00:00
abstract：:The mechanism of the binding of IgA to the mesangium in IgA nephropathy (IgAN) is unknown. Interactions between IgA and components of the mesangial matrix may contribute. We measured by enzyme-linked immunosorbent assay the binding of serum IgA, IgG, and IgM from patients with IgAN, human immunodeficiency virus type I...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1992.298
更新日期：1992-08-01 00:00:00
abstract：:Recent studies including the current article by Sawinski et al. demonstrate that hepatitis C virus (HCV) infection is associated with worse outcomes in kidney transplant recipients with and without HIV infection. We comment on the significance of these findings in the context of newer options for the treatment of HCV ...
journal_title：Kidney international
pub_type： 评论,杂志文章
doi：10.1038/ki.2015.180
更新日期：2015-08-01 00:00:00
abstract：:Polycystic renal disease was induced in rats by feeding 2-amino-4,5-diphenylthiazole. Tubular (TBM) and glomerular basement membranes (GBM) were purified and analyzed for possible structural changes that may be a factor in the development of the tubular dilations and cysts. Changes in the relative quantities of TBM po...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1985.193
更新日期：1985-11-01 00:00:00
abstract：BACKGROUND:Vascular access failure is the main cause of morbidity in hemodialysis. Venous stenosis and subsequent thrombosis, as the result of intimal hyperplasia, is the major cause of vascular access failure. Intimal hyperplasia of the arteriovenous fistula (AVF) closely resembles the main histopathologic feature of ...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1046/j.1523-1755.2003.00120.x
更新日期：2003-08-01 00:00:00
abstract：:Mutations in the inverted formin 2 gene (INF2) have recently been identified as the most common cause of autosomal dominant focal and segmental glomerulosclerosis (FSGS). To quantify the contribution of various genes contributing to FSGS, we sequenced INF2 where all mutations have previously been described (exons 2 to...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.2012.349
更新日期：2013-02-01 00:00:00
abstract：:Tenofovir, a widely prescribed antiretroviral medication for treatment of HIV-1 infection, is infrequently associated with renal dysfunction and biopsy findings of acute tubular necrosis. We examined the clinical and pathological findings in 13 cases of tenofovir nephrotoxicity (7 men and 6 women, mean age of 51.1±9.6...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.2010.318
更新日期：2010-12-01 00:00:00
