Abstract：
BACKGROUND:In the rat cortical thick ascending limb (CTAL), intracellular Ca2+ ([Ca2+]i) responses to angiotensin II (Ang II) and angiotensin III (Ang III) were mediated by the Ang II subtype 1A receptor (AT1A-R), whereas the arginine vasopressin (AVP)-dependent cAMP accumulation involved the vasopressin receptor type 2 (V2-R). This work was performed in CTAL to investigate the crosstalk between these two receptors by studying their transduction pathways. METHODS:The cAMP-dependent pathway was activated by 10 minutes of prestimulation with either forskolin, CTP-cAMP or AVP, and Ang II/Ang III-induced [Ca2+]i responses were assessed. RESULTS:Pretreatment with 5 micromol/L forskolin significantly enhanced the [Ca2+]i response induced by 10-7 mol/L either Ang II or Ang III. Analysis of dose-response curves to Ang III in forskolin-treated CTAL demonstrated that the maximal [Ca2+]i response was significantly increased without altering the EC50. In Ca2+-free medium, the forskolin-induced potentiation of the [Ca2+]i response to Ang III was weaker but always present, suggesting that this effect was not only due to intracellular Ca2+ release but also to extracellular Ca2+ influx. Furthermore, the fact that the forskolin-induced potentiation of the [Ca2+]i response to Ang III was blocked by 10 micromol/L H-89, a specific protein kinase A (PKA) inhibitor, indicated that this effect occurred via activation of PKA. Finally, the potentiation of the [Ca2+]i response to Ang III also was observed following pretreatment with 100 micromol/L CTP-cAMP or 10-7 mol/L AVP. CONCLUSIONS:In CTAL, there is a positive crosstalk between the adenylyl cyclase and phosphoinositide pathways mediated by V2- and AT1A-R, respectively, through activation of PKA.
journal_name
Kidney Intjournal_title
Kidney internationalauthors
Hus-Citharel A,Marchetti J,Corvol P,Llorens-Cortes Cdoi
10.1046/j.1523-1755.2002.00366.xsubject
Has Abstractpub_date
2002-06-01 00:00:00pages
1996-2005issue
6eissn
0085-2538issn
1523-1755pii
S0085-2538(15)48449-2journal_volume
61pub_type
杂志文章abstract：:Osteopontin (OPN) is a secreted acidic glycoprotein that has potent monocyte chemoattractant and adhesive properties. Up-regulation of tubular OPN expression is thought to promote interstitial macrophage infiltration in experimental nephritis; however, the role of OPN in glomerular lesions, particularly crescent forma...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1046/j.1523-1755.1998.00748.x
更新日期：1998-01-01 00:00:00
abstract：:From August 1987 through February 1995 we performed 42 surgical procedures in 29 patients with occluded or stenotic radiocephalic arteriovenous fistulae. Operations were designed to preserve native veins for cannulation (Group I) or to preserve access in the same forearm, bypassing the failed fistula (Group II). For 2...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1046/j.1523-1755.1998.00769.x
更新日期：1998-02-01 00:00:00
abstract：BACKGROUND:Decay accelerating factor (DAF), a product of mesangial cells in vitro, is expressed on the surface of cells and is a candidate for the focal suppression of complement activation. It is not clear at present whether the levels of expression of DAF and intrarenal C3 synthesis correlate with the level of tissue...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1046/j.1523-1755.1998.00961.x
更新日期：1998-07-01 00:00:00
abstract：BACKGROUND:The rat renal proximal tubule cells contain a large amount of monoamine oxidase, which catalyzes the oxidative deamination of catecholamines such as dopamine (DA). The aim of this study is to investigate the potential role of hydrogen peroxide (H2O2) produced by monoamine oxidase (MAO) isoform on regulation ...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1046/j.1523-1755.2001.00468.x
更新日期：2001-01-01 00:00:00
abstract：:To determine the effect of an acute load of potassium on potassium reabsorption by the loop of Henle in chronic renal failure, the right kidney was removed and branches of the left renal artery were ligated in 17 rats. One week later and after 2 days of a potassium-free diet, rats were studied before (period 1) and af...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1985.100
更新日期：1985-06-01 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：:Cyanate is a uremic toxin responsible for the carbamylation of proteins, which has been implicated as playing a key role in accelerating the progression of atherosclerosis in patients with chronic kidney disease. El-Gamal et al. report that while cyanate promotes protein carbamylation in vivo, the resulting endothelia...
journal_title：Kidney international
pub_type： 评论,杂志文章
doi：10.1038/ki.2014.256
更新日期：2014-11-01 00:00:00
abstract：BACKGROUND:Tissue kallikrein regulates blood circulation. Low urinary kallikrein excretion was associated with hypertension and renal disease in blacks. The polymorphic KLK1 promoter includes -130 GN coupled with multiple single base substitutions. The -130 G12 allele in the KLK1 promoter was associated with lower tran...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1111/j.1523-1755.2004.00526.x
更新日期：2004-04-01 00:00:00
abstract：BACKGROUND:The fluid filling renal cysts in human polycystic kidneys is secreted chiefly by the tubular epithelium lining the cysts via secondary chloride transport. Inhibiting this process by somatostatin therapy should induce shrinking of renal cysts. METHODS:In this randomized, cross-over, placebo-controlled trial ...
journal_title：Kidney international
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1111/j.1523-1755.2005.00395.x
更新日期：2005-07-01 00:00:00
abstract：:In recent years, a substantial body of experimental and clinical work has been devoted to C3 glomerulopathy and Ig-mediated membranoproliferative glomerulonephritis. Despite the rapid accumulation of data, several uncertainties about these 2 rare forms of nephropathies persist. They concern their pathophysiology, clas...
journal_title：Kidney international
pub_type： 杂志文章,评审
doi：10.1016/j.kint.2020.05.053
更新日期：2020-11-01 00:00:00
abstract：:A new study by Xu et al. presents compelling evidence for an important role of the glomerular endothelium in acute kidney injury. They show that lipopolysaccharide reduces the endothelial surface layer, resulting in mild albuminuria, reduced glomerular filtration rate, and fewer endothelial fenestrae. Tumor necrosis f...
journal_title：Kidney international
pub_type： 评论,杂志文章
doi：10.1038/ki.2013.317
更新日期：2014-01-01 00:00:00
abstract：:We demonstrate that salts of diatrizoate and iothalamate, radiographic contrast agents, depress the active transport of sodium in the urinary bladder of the Columbian toad, Bufo marinus. Isolated toad bladders were incubated in isotonic Ringer's solutions with isosmolar displacement of sodium chloride by contrast medi...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1975.11
更新日期：1975-02-01 00:00:00
abstract：:Isotomic fluid reabsorption (JV) of rat renal proximal tubules was examined by the shrinking droplet method in combination with simulatneous perfusion of blood capillaries. Sensitivity of JV measurement was improved by using each punctured tubule for control measurements: 1) Parathyroid hormoen (PTH) on the contralumi...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1977.12
更新日期：1977-02-01 00:00:00
abstract：:The adjuvanted hepatitis B vaccine, HB-AS04, elicits more rapid and persistent protective antibody concentrations than double doses of conventional recombinant vaccines in patients with renal insufficiency. We compared the immunogenicity, reactogenicity, and safety of the AS02(V)-adjuvanted hepatitis B vaccine HB-AS02...
journal_title：Kidney international
pub_type： 杂志文章,随机对照试验
doi：10.1038/ki.2009.454
更新日期：2010-02-01 00:00:00
abstract：:The early identification of renal transplant recipients at enhanced risk of developing acute and subclinical rejection would allow individualized adjustment of immunosuppression before functional graft injury occurs and would exclude these patients from drug-weaning studies. Protein and reverse transcriptase-polymeras...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/sj.ki.5000343
更新日期：2006-05-01 00:00:00
abstract：BACKGROUND:Proteomic techniques have recently become available for large-scale protein analysis. The utility of these techniques in identification of urinary proteins is poorly defined. We constructed a proteome map of normal human urine as a reference protein database by using two differential fractionated techniques ...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1111/j.1523-1755.2002.kid565.x
更新日期：2002-10-01 00:00:00
abstract：BACKGROUND:Lipoprotein glomerulopathy (LPG) is characterized by intraglomerular lipoprotein thrombosis and high plasma concentrations of apolipoprotein (apo) E. An apo E variant, apo E2 (Arg145Pro) Sendai, was recently identified in three patients with LPG. We detected a novel point mutation in the apo E gene in a pati...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1046/j.1523-1755.1999.00572.x
更新日期：1999-08-01 00:00:00
abstract：:Renal blood oxygen level-dependent magnetic resonance imaging (BOLD-MRI) is a noninvasive fast technique to characterize renal function. Here we evaluated the impact of renal function on the relaxation rate (R2(*)) in the cortex and medulla to provide baseline data for further use of renal BOLD-MRI. This parameter was...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.2011.455
更新日期：2012-04-01 00:00:00
abstract：:IgA nephropathy is the most common primary glomerulonephritis worldwide. Its frequent coexistence with inflammatory, infectious, or malignant processes raises the possibility of a pathologic rather than coincidental association. Major strides have been made to elucidate the underlying pathophysiologic events that culm...
journal_title：Kidney international
pub_type： 杂志文章,评审
doi：10.1016/j.kint.2018.02.030
更新日期：2018-10-01 00:00:00
abstract：:ESKD patients have a large burden of disease, with high rates of readmission to hospital compared with the general population. A readmission after an acute index hospital discharge is either planned or unplanned. A proportion of unplanned readmissions are potentially avoidable, and could have been prevented with optim...
journal_title：Kidney international
pub_type： 杂志文章,评审
doi：10.1038/ki.2015.307
更新日期：2015-12-01 00:00:00
abstract：:To evaluate the effect of continuous ambulatory peritoneal dialysis (CAPD) on the anemia of endstage renal disease, serial measurements of red cell mass and other hematological parameters were performed in 34 patients. Twenty-five patients were measured at the start and at 6 months (group 1), 13 at the start, at 6 and...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1983.88
更新日期：1983-05-01 00:00:00
abstract：:Pulse wave velocity (PWV) was measured in the aorta, right leg and arm of 90 control subjects (CS) and 92 hemodialysis patients (HD) of the same age and mean arterial pressure (MAP). Blood chemistry, including blood lipids, and echographic dimensions of the aorta, were measured in all subjects. Presence of aortic calc...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1990.19
更新日期：1990-01-01 00:00:00
abstract：:There is an urgent need for therapeutic agents that target humoral alloimmunity in solid organ transplantation. This includes sensitized patients with preformed donor-specific human leukocyte antigen antibodies and patients who develop de novo donor-specific antibodies, both of which are associated with acute and chro...
journal_title：Kidney international
pub_type： 杂志文章,评审
doi：10.1016/j.kint.2018.10.028
更新日期：2019-04-01 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：:In a variety of recent studies in animals with chronic renal diseases, investigators have found a tight correlation between the elevation in glomerular pressures and flows versus glomerular hypertrophy. To investigate a possible causal link between the glomerular hyperfunction and hypertrophy, we studied the functiona...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1989.35
更新日期：1989-02-01 00:00:00
abstract：:Increasing evidence points to the importance of aberrant O-glycosylated immunoglobulin A1 (IgA1) in the pathogenesis of IgA nephropathy (IgAN), a disease widely considered to be a polygenic disorder. We earlier found that haplotypes in two key glycosyltransferase genes, C1GALT1 and ST6GALNAC2, were associated with sus...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.2009.99
更新日期：2009-07-01 00:00:00
abstract：BACKGROUND:In cultured renal epithelial cells, exposure to oxalate, a constituent of many kidney stones, elicits a cascade of responses that often leads to cell death. Oxalate toxicity is mediated via generation of reactive oxygen species (ROS) in a process that depends at least in part upon lipid signaling molecules t...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1111/j.1523-1755.2004.00963.x
更新日期：2004-11-01 00:00:00
abstract：BACKGROUND:Patients initiating dialysis after a failed kidney transplant are a subgroup of chronic kidney disease (CKD) patients who have not been characterized. Exposure to immunosuppressive medications differentiates these patients from the general incident end-stage renal disease (ESRD) population. METHODS:Data fro...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1046/j.1523-1755.2002.00373.x
更新日期：2002-06-01 00:00:00
abstract：:The effect of the tricarboxylic acid (TCA) cycle precursor, pyruvate, on glutamine metabolism by isolated renal cortical mitochondria was assessed by quantitating its key nitrogen and carbon metabolites. When mitochondria from normal rats were incubated at pH 7.4, pyruvate (2 mM) inhibited ammonia production by almost...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1982.166
更新日期：1982-09-01 00:00:00
abstract：:The cannabinoid receptor type 2 (CB2) is a G protein-coupled seven transmembrane receptor that transmits endogenous cannabinoid signaling. The role of CB2 in the pathogenesis of kidney injury and fibrosis remains poorly understood. Here we demonstrate that CB2 was induced, predominantly in kidney tubular epithelium, i...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1016/j.kint.2018.05.023
更新日期：2018-10-01 00:00:00
