Abstract：
:Unidirectional 32P-phosphate and 3H-mannitol fluxes were simultaneously measured, at two minutes intervals, in frog urinary bladders. The spontaneous or externally imposed transepithelial potential (PD) and short circuit current (SCC) were also recorded in most experiments. It was observed that: (1) Phosphate transfer was rapidly and reversibly modified by changes in mucosal sodium concentration in open circuit conditions. (2) Between four and six minutes after changing mucosal NaCl concentration, phosphate fluxes reached a new steady-state value. (3) The observed correlation between the Na-dependent phosphate flux and the Na-dependent transmembrane potential was high (r = 0.99, N = 12). (4) In open circuit conditions, the mucosa-to-serosa unidirectional phosphate fluxes were inhibited by 10(-5) M amiloride, while the serosa-to-mucosa movements were increased. (5) On the contrary, no effects of mucosal NaCl concentration or amiloride on the mucosa-to-serosa phosphate fluxes were detected in short circuit conditions. (6) The transepithelial phosphate transfer was linearly related to phosphate concentration and insensitive to arsenate (10(-3) M) action. (7) An externally imposed PD was less effective for driving a phosphate movement than the one depending on Na, suggesting some type of coupling between Na+ and phosphate transports. (8) The mucosa-to-serosa phosphate fluxes were reduced by parathyroid hormone and oxytocin. Maximum inhibition was observed four minutes after the hormonal action. It is concluded that the transepithelial PD plays a major role in phosphate handling in frog urinary bladder.
journal_name
Kidney Intjournal_title
Kidney internationalauthors
Parisi M,Cancela Ldoi
10.1038/ki.1988.9subject
Has Abstractpub_date
1988-01-01 00:00:00pages
58-63issue
1eissn
0085-2538issn
1523-1755pii
S0085-2538(15)34197-1journal_volume
33pub_type
杂志文章abstract：:Kidney disease is associated with increased cardiovascular morbidity, but underlying mechanisms are poorly understood. We tested the hypothesis that chronic renal insufficiency impairs angioadaptation in a rat model of hindlimb ischemia. Twenty male Sprague-Dawley rats (8 weeks old) underwent subtotal nephrectomy (5/6...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/sj.ki.5000448
更新日期：2006-06-01 00:00:00
abstract：BACKGROUND:Autosomal-dominant medullary cystic kidney disease (ADMCKD), a hereditary chronic interstitial nephropathy, recently attracted attention because of the cloning or mapping of certain gene loci, namely NPHP1, NPHP2 and NPHP3 for familial juvenile nephronophthisis (NPH) and MCKD1 and MCKD2 for the adult form of...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1111/j.1523-1755.2002.kid581.x
更新日期：2002-10-01 00:00:00
abstract：:We have studied the effect of neutralizing the surface charge of rat glomerular epithelial cells (GEC) in culture on prostanoid production. Incubation of rat GEC with polycations poly-L-lysine (PL) resulted in a dose dependent increase of 6-keto-PGF1 alpha (up to 8 to 10-fold) and PGE2 (up to 7 to 8-fold) production. ...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1987.171
更新日期：1987-07-01 00:00:00
abstract：:Because the comparison of survival in patients with renal failure treated by dialysis and transplantation may be biased by pretreatment prognostic differences in the patients who receive these two therapies, we quantified the pretreatment prognosis of all 430 dialysis and transplant patients who began therapy for end-...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1984.132
更新日期：1984-07-01 00:00:00
abstract：:Fibroblasts in parenchymal organs potentially contribute extracellular matrix to local fibrogenic processes. This contribution, in some circumstances, may be initiated by cytokines disseminated from inflammatory lesions. Different populations of fibroblasts, however, might respond distinctively to this cytokine bath d...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1992.3
更新日期：1992-01-01 00:00:00
abstract：BACKGROUND:Adiponectin is an adipocyte-derived cytokine that has anti-inflammatory properties. A preliminary proteomic evaluation of urine for biomarkers of systemic lupus erythematosus (SLE) nephritis demonstrated high levels of adiponectin in SLE urine. This prompted investigation of adiponectin expression in human S...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1111/j.1523-1755.2005.00601.x
更新日期：2005-10-01 00:00:00
abstract：BACKGROUND:Optimal nutrient intake is important in the maintenance of a positive nitrogen balance in hemodialysis (HD) patients. The objectives of this study were (1) to assess the influence of two levels of protein intakes on nitrogen balance in stable adult HD patients, and (2) to identify a minimum level of protein ...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1046/j.1523-1755.2000.00171.x
更新日期：2000-07-01 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：:The importance of the relationship between the alteration of podocytic processes (PP) and proteinuria has been controversial for almost 30 years. In spite of several morphometric studies the range of PP alterations in different proteinuric conditions has gone unnoticed. Thus, we studied the distribution of abnormally ...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1987.269
更新日期：1987-11-01 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：:The renal 11beta-hydroxysteroid dehydrogenase type 2 (11betaHSD2) enzyme inactivates 11-hydroxy steroids in the kidney, thus protecting the nonselective mineralocorticoid receptor (MR) from occupation by glucocorticoids. The gene is highly expressed in all sodium-transporting epithelia, but also in human placenta, pan...
journal_title：Kidney international
pub_type： 杂志文章,评审
doi：10.1046/j.1523-1755.2000.00978.x
更新日期：2000-04-01 00:00:00
abstract：:The mechanism whereby glucocorticoid deficiency impairs renal water excretion was studied in the conscious mineralocorticoid-replaced, adrenalectomized rat. Control animals received physiologic replacement with prednisolone, and experimental animals were deprived of glucocorticoid hormone for either 1 or 14 days. The ...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1980.110
更新日期：1980-07-01 00:00:00
abstract：:It is unknown whether the association between body mass index (BMI) and chronic kidney disease (CKD) is mediated by genetic confounding or obesity-associated diabetes. We investigated the association between BMI and incident CKD in 29,136 Swedish twins with no history of CKD or diabetes, first using traditional Cox re...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1016/j.kint.2018.12.019
更新日期：2019-05-01 00:00:00
abstract：:Ultrafiltration failure is a major complication of long-term peritoneal dialysis, resulting in dialysis failure. Peritoneal fibrosis induced by continuous exposure to high glucose dialysate is the major contributor of ultrafiltration failure, for which there is no effective treatment. Overactivation of several signali...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1016/j.kint.2017.12.023
更新日期：2018-06-01 00:00:00
abstract：:Kallistatin is a serine protease inhibitor with anti-inflammatory, anti-angiogenic, and anti-oxidative properties. Since oxidative stress plays a critical role in the pathogenesis of diabetic nephropathy, we studied the effect and mechanisms of action of kallistatin superinduction. Using ultrasound-microbubble-mediate...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.2015.331
更新日期：2016-02-01 00:00:00
abstract：BACKGROUND:The inhibitor of apoptosis (IAP) family of proteins regulates programmed cell death triggered by various stimuli. The purpose of this investigation was to examine the expression, regulation, and function of IAP genes in cultured rat mesangial cells. METHODS:Basal and inducible expression of c-IAP1, c-IAP2, ...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1046/j.1523-1755.2001.060002579.x
更新日期：2001-08-01 00:00:00
abstract：BACKGROUND:This study evaluated the effects of dietary sodium manipulation in dogs on the regulation of canine angiotensin receptors (cAT1 and cAT2) in the kidney and adrenal. METHODS:Isolated glomeruli and membranes from renal medulla and the adrenal gland were used in radioligand binding assays from two groups of do...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1046/j.1523-1755.2001.0590051881.x
更新日期：2001-05-01 00:00:00
abstract：BACKGROUND:We have recently found evidence for increased reactive oxygen species (ROS) in rats with lead-induced hypertension. We hypothesized that increased ROS activity may contribute to hypertension by enhancing inactivation of nitric oxide (NO) in this model. METHODS:Rats were treated for 12 weeks with either lead...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1046/j.1523-1755.1999.00670.x
更新日期：1999-10-01 00:00:00
abstract：:Isolated perfused rat kidneys were passively sensitized by addition of either mouse ascitic fluid containing monoclonal IgE against dinitrophenol (DNP) or DNP-specific purified IgE. After washing the organ, defined doses of DNP-bovine serum albumin were given as bolus injection via the kidney artery. Antigen challenge...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1987.197
更新日期：1987-08-01 00:00:00
abstract：BACKGROUND:Several examinations have been performed to identify the genes involved in chronic renal failure using 5/6 nephrectomized rats. Recently, many systematic techniques for examining molecular expression have been developed. They might also be effective in elucidating the molecular mechanism of progressive renal...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1111/j.1523-1755.2004.00704.x
更新日期：2004-07-01 00:00:00
abstract：BACKGROUND:The purpose of this study was to examine the relationship between glomerular filtration rate (GFR) measured at 5 years' diabetes duration and annual urine albumin excretion in a prospective cohort of children with type 1 diabetes (T1DM). METHODS:Three hundred and eight children were followed from diagnosis ...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1111/j.1523-1755.2005.00590.x
更新日期：2005-10-01 00:00:00
abstract：:The present studies address the metabolic processes that support the reabsorption of sodium and the secretion of bicarbonate in the interspersed but distinct principal and intercalated cells of the cortical collecting duct (CCD). In microperfused rabbit CCD, sodium reabsorption was measured by lumen-to-bath 22Na flux,...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1046/j.1523-1755.1998.00754.x
更新日期：1998-02-01 00:00:00
abstract：BACKGROUND:Segmental glomerular necrosis has been described in the biopsy material in a minority of patients with idiopathic IgA nephropathy in the oldest studies on this disease, but this marker of active capillaritis has received little attention in the subsequent literature, and its significance and relevance for th...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1046/j.1523-1755.2001.059002682.x
更新日期：2001-02-01 00:00:00
abstract：BACKGROUND:Proteoglycans are integral components of the mesangial matrix and glomerular permeability barrier. Recent studies have shown that changes in glomerular proteoglycan expression may play a major role in the pathogenesis of renal disease. Steroid hormones are used as first-choice therapy for the treatment of gl...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1046/j.1523-1755.2002.00524.x
更新日期：2002-09-01 00:00:00
abstract：:A genome-wide association scan of the Genetics of Kidneys in Diabetes (GoKinD) collections identified four novel susceptibility loci, located on chromosomes 7p14.3, 9q21.32, 11p15.4, and 13q33.3 associated with type 1 diabetic nephropathy. A recent evaluation of these loci in Japanese patients with type 2 diabetes sup...
journal_title：Kidney international
pub_type： 杂志文章,meta分析
doi：10.1038/ki.2011.64
更新日期：2011-07-01 00:00:00
abstract：BACKGROUND:The objectives of this study were to compare the effects of the angiotensin II receptor blocker, losartan, to those of the angiotensin-converting enzyme inhibitor, enalapril, on albuminuria and renal function in relationship to clinic and ambulatory blood pressure (ABP) in hypertensive type 2 diabetic subjec...
journal_title：Kidney international
pub_type： 临床试验,杂志文章
doi：10.1046/j.1523-1755.2000.00224.x
更新日期：2000-08-01 00:00:00
abstract：BACKGROUND:Hypertension is a recognized complication of partial correction of anemia with recombinant human erythropoietin (epoetin) in hemodialysis patients. We used interdialytic ambulatory blood pressure (ABP) monitoring to study the effects of partially corrected anemia versus normal hematocrit (hct) on BP in hemod...
journal_title：Kidney international
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1046/j.1523-1755.1999.00531.x
更新日期：1999-07-01 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：:Because of high risk of cardiovascular disease, patients with chronic kidney disease may benefit from cholesterol-lowering therapy beyond statins. A cost-effectiveness analysis of adding ezetimibe to high-dose statins for primary cardiovascular disease prevention in patients with non-dialysis-dependent chronic kidney ...
journal_title：Kidney international
pub_type： 评论,杂志文章
doi：10.1016/j.kint.2019.02.029
更新日期：2019-07-01 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
