Abstract：
:Cells from RCCT-28A cell line, which exhibited the highest peanut-lectin binding capacity [RCCT-28A(P+)] were separated and cultured attempting to obtain a population of HCO3- secreting cells. The mechanisms of apical solution acid or base extrusion were studied in confluent monolayers. In RCCT-28A (P+) cells net H+ flux (JH+, nmol.min-1.cm-2) was significantly lower (JH+ = 13 +/- 3) than that observed in the RCCT-28A cells (21 +/- 2). N-ethylmaleimide, Bafilomycin-A, omeprazole and Schering 28080 decreased JH+. Cl- removal from the basolateral side, in the presence or absence of SCH in the apical side, decreased JH+. Removal of apical Cl- abolished apical extrusion of base-equivalents. Incubation in a high bicarbonate solution results in base-equivalent flux to the apical side (JH+ = -7.0 +/- 1.0). Preincubation in a hyperosmotic medium (mannitol addition) at pH 7.5 decreased JH+ to -3.0 +/- 1.0. We conclude that, functionally, RCCT-28A(P+) cells are only quantitatively different from RCCT-28A cells. Acid secretion by these cells can be modulated by alkaline and by hyperosmolar preincubation and is most likely mediated by coexistent of apical H(+)-ATPase and H+,K(+)-ATPase. The main mechanism of net OH- secretion appears to be Cl-/HCO3- exchange at the apical side.
journal_name
Kidney Intjournal_title
Kidney internationalauthors
Bello-Reuss Edoi
10.1038/ki.1993.30subject
Has Abstractpub_date
1993-01-01 00:00:00pages
182-8issue
1eissn
0085-2538issn
1523-1755pii
S0085-2538(15)57904-0journal_volume
43pub_type
杂志文章abstract：:Clinical studies have demonstrated a poor correlation between localization tests, which are designed to determine the site of urinary tract infection, and symptoms of upper urinary tract infection. One explanation is that microorganisms may be present in the kidney but not initiate an inflammatory response with associ...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1992.200
更新日期：1992-05-01 00:00:00
abstract：:The impact of early-diagnosed new-onset post-transplantation diabetes mellitus (PTDM) on cardiovascular (CV) disease is not well described. The objectives of the present prospective single-center observational study were to assess the long-term effects of early-diagnosed new-onset PTDM on major cardiac events (MCE; ca...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/sj.ki.5000116
更新日期：2006-02-01 00:00:00
abstract：:The natural course of idiopathic membranous nephropathy is variable, with some patients slowly progressing to renal failure while others maintain normal renal function over the entire time. Whether to treat this disease or not is controversial due to the lack of controlled data about the long-term effects of treatment...
journal_title：Kidney international
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1038/ki.1995.453
更新日期：1995-11-01 00:00:00
abstract：BACKGROUND:This multicenter, open-label, dose-titration study assessed the safety and efficacy of RenaGel(R), a nonabsorbed calcium- and aluminum-free phosphate binder, in lowering serum phosphorus. Secondary outcomes were its effects on serum intact parathyroid hormone (iPTH) and serum lipids. METHODS:Phosphate binde...
journal_title：Kidney international
pub_type： 临床试验,杂志文章,多中心研究
doi：10.1046/j.1523-1755.1999.00240.x
更新日期：1999-01-01 00:00:00
abstract：:Intravital multiphoton microscopy is a powerful tool to study kidney physiology in living animals. However, certain technical issues have curbed its usage to date, including limited depth of tissue penetration and high background emission of endogenous signals. Most previous studies have used the excitation range 700–...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.2015.323
更新日期：2016-03-01 00:00:00
abstract：:The monitoring of the levels of alloantibodies following transplantation might facilitate early diagnosis of chronic rejection (CR), the leading cause of renal allograft failure. Here, we used serial alloantibody surveillance to monitor patients with preoperative positive flow cytometric crossmatch (FCXM). Sixty-nine ...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.2010.556
更新日期：2011-05-01 00:00:00
abstract：:A controlled trial of cyclosporine in patients diagnosed with progressive membranous nephropathy (MGN) was carried out to determine whether cyclosporine (D) would be more effective than placebo (P) in reducing the rate of deterioration in renal function. Patients (N = 64) with MGN were placed on a restricted protein d...
journal_title：Kidney international
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1038/ki.1995.161
更新日期：1995-04-01 00:00:00
abstract：:The presence of CR1 mRNA in podocytes was investigated using a 35S-labeled CR1 cDNA probe and in situ hybridization in sections from fetal and adult human kidneys. CR1 mRNA was only detected in immature podocytes at early stages of glomerular differentiation in the fetal kidney. In contrast, CR1 antigen was abundantly...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1990.198
更新日期：1990-08-01 00:00:00
abstract：:Disasters result in a substantial number of renal challenges, either by the creation of crush injury in victims trapped in collapsed buildings or by the destruction of existing dialysis facilities, leaving chronic dialysis patients without access to their dialysis units, medications, or medical care. Over the past two...
journal_title：Kidney international
pub_type： 杂志文章,评审
doi：10.1038/ki.2013.392
更新日期：2014-05-01 00:00:00
abstract：BACKGROUND:Home nocturnal hemodialysis is an intensive form of hemodialysis, where patients perform their treatments at home for about 7 hours approximately 6 nights a week. Compared with in-center conventional hemodialysis, home nocturnal hemodialysis has been shown to improve physiologic parameters and reduce health ...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1046/j.1523-1755.2003.00157.x
更新日期：2003-09-01 00:00:00
abstract：:The relationship between body mass index (BMI) and end-stage renal disease (ESRD) is confounded by co-morbidities associated with both conditions. Furthermore, the association at low range BMI is controversial. We studied this association in the Singapore Chinese Health Study, a population-based prospective cohort tha...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1016/j.kint.2017.03.019
更新日期：2017-10-01 00:00:00
abstract：:Changes in macula densa intracellular pH (pHi) were used to monitor the direction of flux mediated by the apical Na:2Cl:K cotransporter. At the macula densa, a decrease in luminal [Cl] ([Cl]1) from 60 to 1 mM produced cellular alkalinization secondary to a cascade of events involving a decrease in apical Na:2Cl:K cotr...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1995.115
更新日期：1995-03-01 00:00:00
abstract：BACKGROUND:Atherogenic lipoproteins cause injury to the vascular wall in the early phase of atherogenesis. We assessed the effects of native (nLDL) and oxidized (oxLDL) low-density lipoprotein (LDL) and lipoprotein (a) [Lp(a)] on O2- formation and cell death in cultured human umbilical vein endothelial cells (HUVECs) a...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1046/j.1523-1755.1999.00351.x
更新日期：1999-04-01 00:00:00
abstract：:beta 2-microglobulin-related amyloidosis (A beta 2M) represents a frequent complication in long-term dialysis patients. Although the pathogenetic mechanism has yet to be fully understood, it is known that amyloid fibrils usually consist of intact molecules of beta 2-microglobulin (beta 2m). Plasma proteinase inhibitor...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1992.368
更新日期：1992-10-01 00:00:00
abstract：:Gap junctions are present in the juxtaglomerular apparatus enabling intercellular communication. Our study determined the location of different connexin subtypes within the juxtaglomerular apparatus of the rat, and the role of these subtypes in renal hemodynamics through the use of specific mimetic peptides. Immunohis...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/sj.ki.5002673
更新日期：2008-02-01 00:00:00
abstract：:Patients receiving cadaveric kidney transplants often experience delayed graft function. As iodinated contrast media injection (ICMI), necessary for cerebral angiography, which is often used to diagnose brain death, can be nephrotoxic, we compared renal function recovery (RFR) and 1-year and long-term graft survival a...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/sj.ki.5001727
更新日期：2006-09-01 00:00:00
abstract：:Transepithelial fluid secretion promotes the progressive enlargement of cysts in autosomal dominant polycystic kidney disease (ADPKD). Recent indirect evidence indicated that active chloride transport may drive net fluid secretion in cultures of epithelia derived from ADPKD cysts. We now report that forskolin, which s...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1996.304
更新日期：1996-07-01 00:00:00
abstract：:Using a combination of intra-operative digital photography and micro-biopsy we measured renal cortical and papillary changes in five patients with primary hyperparathyroidism and abundant calcium phosphate kidney stones. Major tissue changes were variable papillary flattening and retraction, dilation of the ducts of B...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.2008.161
更新日期：2008-07-01 00:00:00
abstract：:Bovine serum albumin (BSA, pI 4.9) was maleylated to yield highly anionic MBSA (pI 3.0). Maleylation of BSA lead to an expansion of molecular size of native BSA from an effective molecular radius (EMR) of 37 A to 57 A for MBSA as assessed by gel filtration chromatography. MBSA, but not BSA, bound to the peripheral cap...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1988.161
更新日期：1988-08-01 00:00:00
abstract：:Autophagy is a conserved multistep pathway that degrades and recycles damaged organelles and macromolecules to maintain intracellular homeostasis. The autophagy pathway is upregulated under stress conditions including cell starvation, hypoxia, nutrient and growth-factor deprivation, endoplasmic reticulum stress, and o...
journal_title：Kidney international
pub_type： 杂志文章,评审
doi：10.1016/j.kint.2015.11.021
更新日期：2016-04-01 00:00:00
abstract：:Fibrates, the PPAR alpha ligand-like compounds increase the expression of proximal tubule liver fatty acid binding protein (L-FABP) and significantly decrease cisplatin-induced acute kidney injury. To study whether the bezafibrate-mediated upregulation of renal L-FABP was involved in this cytoprotective effect we trea...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.2008.106
更新日期：2008-06-01 00:00:00
abstract：:Intrarenal angiotensin II is increased in kidney diseases independently of plasma angiotensin II and is thought to promote progressive deterioration of renal architecture. Here we investigated the mechanism of enhanced renal angiotensin II generation in kidney glomerular diseases. For this, kidney- or liver-specific a...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.2013.453
更新日期：2014-05-01 00:00:00
abstract：:Vitamin D analogs may slow the progression of chronic kidney disease. Tan et al. report that paricalcitol has additive effects with an angiotensin-converting enzyme inhibitor (ACEI) in suppressing extracellular matrix expression, interstitial inflammation, and myofibroblast activation in obstructive nephropathy. Paric...
journal_title：Kidney international
pub_type： 评论,杂志文章,评审
doi：10.1038/ki.2009.390
更新日期：2009-12-01 00:00:00
abstract：BACKGROUND:Bone marrow reconstitution using genetically-modified hematopoietic stem cells has been reported to confer resistance to inflammation and prevent renal injury in glomerulonephritis. Although this strategy has potentials for clinical use, taking hematopoietic stem cells from bone marrow is highly stressful fo...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1046/j.1523-1755.2003.00046.x
更新日期：2003-07-01 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：:The existence of a tissue renin-angiotensin (RAS) system independent of the circulating RAS has prompted the search for cellular binding sites for angiotensinogen and for renin in order to explain their tissue uptake. Two receptors that bind with similar affinity mature renin and prorenin were identified, the mannose-...
journal_title：Kidney international
pub_type： 杂志文章,评审
doi：10.1038/sj.ki.5000265
更新日期：2006-05-01 00:00:00
abstract：:Insulin-like growth factor I (IGF-I) has been found in the kidney, particularly in the collecting duct in the rat. Since cultured rabbit collecting duct cells constitute a convenient system for in vitro studies, we have examined whether these cells secrete IGF-I. Culture medium conditioned by collecting duct cells was...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1991.3
更新日期：1991-01-01 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：: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：:The Executive Summary of the KDIGO Clinical Practice Guideline for the Care of Kidney Transplant Recipients is presented in this issue of Kidney International. This guideline will require careful attention for implementation in the context of available resources within each country, especially those with underdevelope...
journal_title：Kidney international
pub_type： 评论,杂志文章
doi：10.1038/ki.2009.468
更新日期：2010-02-01 00:00:00
