Abstract:
:Recent studies suggest the presence of local angiotensin generating system in the kidney. By using in situ hybridization technique, mRNA for angiotensinogen has been shown to be present in the proximal tubule. In the present study, we have attempted to examine the production of angiotensinogen and renin-like activity by the proximal convoluted (PCT) and straight (PST) tubular cells. PCT and PST cells were obtained from microdissected rabbit proximal tubules and cultured in vitro. Angiotensinogen and renin-like activity were quantitated in culture media and cell lysates. It was found that PCT culture medium contained both angiotensinogen and renin-like activity, whereas only angiotensinogen was detected in PST culture medium. Support for de novo synthesis is provided by the observation that both angiotensinogen and renin-like activity in PCT culture medium increased in a time-dependent and hormone-sensitive manner in defined serum-free medium. These results thus demonstrate the actual production of angiotensinogen and renin-like activity by proximal tubular cells, and indicate that these locally synthesized components may contribute to the regulation of angiotensin generation in renal proximal tubule.
journal_name
Kidney Intjournal_title
Kidney internationalauthors
Yanagawa N,Capparelli AW,Jo OD,Friedal A,Barrett JD,Eggena Pdoi
10.1038/ki.1991.117subject
Has Abstractpub_date
1991-05-01 00:00:00pages
938-41issue
5eissn
0085-2538issn
1523-1755pii
S0085-2538(15)57207-4journal_volume
39pub_type
杂志文章abstract::Thrombotic microangiopathy (TMA) is a poorly recognized cause of collapsing glomerulopathy. The frequency and significance of collapsing glomerulopathy associated with renal TMA have not been specifically studied in native kidney biopsy specimens. Here we retrospectively documented clinicopathologic features of 53 pat...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1016/j.kint.2016.07.021
更新日期:2016-12-01 00:00:00
abstract::Levels of prepro epidermal growth factor (EGF) mRNA in renal cortical tissue and urinary EGF excretion have been determined during cisplatin and ischemia-induced acute renal failure in the rat. Northern analysis of polyadenylated RNAs of kidney cortical tissue showed diminished renal preproEGF mRNA in rats injected wi...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.1989.266
更新日期:1989-11-01 00:00:00
abstract::On a typical Western diet, the body is faced with the generation of a metabolically derived acid load that must be excreted to maintain systemic acid-base balance. The kidney is responsible for this task and matches daily acid excretion with daily acid production. Multiple nephron segments are involved in the process,...
journal_title:Kidney international
pub_type: 杂志文章,评审
doi:10.1038/sj.ki.5002543
更新日期:2007-12-01 00:00:00
abstract::The renal handling of gentamicin in the rat was examined by clearance, microinjection, and renal cortical-slice techniques. The steady-state renal clearance of 14C-gentamicin, when corrected for the 7.5% binding to plasma protein, was not significantly different from that of 3H-inulin. At the end of the renal clearanc...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.1979.149
更新日期:1979-10-01 00:00:00
abstract::Ischemia-reperfusion injury (IRI) is the outcome of an inflammatory process that is triggered when an organ undergoes a transient reduction or cessation of blood flow, followed by re-establishment of perfusion. In the clinical setting, IRI contributes to significant acute kidney injury, patient morbidity and mortality...
journal_title:Kidney international
pub_type: 杂志文章,评审
doi:10.1016/j.kint.2019.02.009
更新日期:2019-08-01 00:00:00
abstract::Anti-neutrophil cytoplasmic antibody (ANCA)-associated glomerulonephritis involves innate and adaptive immune cells in the induction of autoimmunity and in autoimmune effector responses. Most Fcγ receptors (FcγRs) activate immune cells, but FcγRIIB, found in humans and mice on B cells and innate cells, is an inhibitor...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.2014.189
更新日期:2014-12-01 00:00:00
abstract::Hyper-activation of Rac1, a small GTPase, in glomerular podocytes has been implicated in the pathogenesis of familial proteinuric kidney diseases. However, the role of Rac1 in acquired nephrotic syndrome is unknown. To gain direct insights into this, we generated a transgenic mouse model expressing a doxycycline-induc...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1016/j.kint.2017.03.010
更新日期:2017-08-01 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::We examined the process of receptor-mediated endocytosis in A-9 lung fibroblast and chinese hamster ovary (CHO) cells transfected with the recently cloned vasopressin V1a receptor (51). We used a fluorescent labeled vasopressin analog (rhodamine-mercaptopropionic acid lysine vasopressin) and radiolabeled vasopressin t...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.1993.119
更新日期:1993-04-01 00:00:00
abstract::The survival of patients with diabetes mellitus in the general population has improved in recent years. Here we assessed whether similar trends have occurred in 1688 kidney recipients, including 413 with diabetes prior to transplant between 1996 and 2007. Compared to patients without diabetes, the 5-year mortality was...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.2014.70
更新日期:2014-09-01 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::Defective cholesterol metabolism primarily linked to reduced ATP-binding cassette transporter A1 (ABCA1) expression is closely associated with the pathogenesis and progression of kidney diseases, including diabetic kidney disease and Alport Syndrome. However, whether the accumulation of free or esterified cholesterol ...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1016/j.kint.2020.06.040
更新日期:2020-11-01 00:00:00
abstract:BACKGROUND:Intrauterine growth retardation (IUGR) is associated with higher morbidity and mortality not only in perinatal life but also in later life. The purpose of our study was to determine whether IUGR has any effect on the course of minimal change nephrotic syndrome (MCNS) in children. METHODS:Forty children who ...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1046/j.1523-1755.1998.00121.x
更新日期:1998-10-01 00:00:00
abstract::Urinary exosomes containing apical membrane and intracellular fluid are normally secreted into the urine from all nephron segments, and may carry protein markers of renal dysfunction and structural injury. We studied methods for collection, storage, and preservation of urinary exosomal proteins. We collected urine fro...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/sj.ki.5000273
更新日期:2006-04-01 00:00:00
abstract::Transcriptome analysis of a rat polycystic kidney disease (PKD) model: importance of genes involved in extracellular matrix metabolism. PKD is a common genetic cause of chronic renal failure, and is characterized by the accumulation of fluid-filled cysts in the kidneys and other organs. Abnormalities in the expression...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/sj.ki.5000309
更新日期:2006-05-01 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::Only some individuals carrying the high-risk APOL1 genotype go on to develop kidney disease phenotypes. In this issue of Kidney International, Nadkarni and colleagues report the associations of several biomarkers with renal outcomes in individuals with high-risk APOL1 genotypes. In the era of precision medicine, these...
journal_title:Kidney international
pub_type: 评论,杂志文章
doi:10.1016/j.kint.2018.03.005
更新日期:2018-06-01 00:00:00
abstract::Macrophages are inflammatory cells with important roles in the propagation of renal injury. More recently they have also been shown to be important in the resolution of inflammation. Wang et al. show that macrophages can be modulated ex vivo by cytokine stimulation, localize to renal tissue, and slow progression of ex...
journal_title:Kidney international
pub_type: 评论,杂志文章
doi:10.1038/sj.ki.5002332
更新日期:2007-08-01 00:00:00
abstract::X-ray films of the hand skeleton (mammography technique), serum chemistry, and quantitative bone histology (micromorphometry of undecalcified sections, iliac crest spongiosa) were compared in 25 patients on maintenance hemodialysis. The X-ray findings correlated better with serum PTH levels than with bone histology. O...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.1978.45
更新日期:1978-04-01 00:00:00
abstract::The vasopressin inhibitor tolvaptan is clinically effective in slowing growth of renal cysts and reduction in estimated glomerular filtration rate (eGFR) in autosomal dominant polycystic kidney disease (ADPKD), but these effects are mitigated by the associated polyuria. Changes of total kidney volume, eGFR, and sympto...
journal_title:Kidney international
pub_type: 评论,杂志文章
doi:10.1038/ki.2015.143
更新日期:2015-07-01 00:00:00
abstract::Experiments in rodents have demonstrated an important role for selectins in kidney ischemia-reperfusion injury (IRI). However, the relevance of this in larger mammals, as well as the impact on long-term structure and function is unknown. We tested the hypothesis that small molecule selectin ligand inhibition attenuate...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/sj.ki.5000335
更新日期:2006-05-01 00:00:00
abstract::In male Wistar rats, renal adenosine triphosphate (ATP), inorganic phosphate (Pi) and intracellular pH were measured by 31phosphorus nuclear magnetic resonance (31P NMR) and correlated with renal function before, during, and for one hour after a period of 30 to 40 minutes hemorrhagic hypotension. In animals which suff...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.1986.192
更新日期:1986-09-01 00:00:00
abstract:BACKGROUND:Podocytes are highly differentiated glomerular epithelial cells with limited potential to divide. They are responsible for maintaining and supporting the glomerular basement membrane so as to facilitate efficient filtration. The hypothesis tested was whether the development of glomerulosclerosis in the purom...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1046/j.1523-1755.2001.060003957.x
更新日期:2001-09-01 00:00:00
abstract::Alport syndrome is experiencing a remarkable increase in preclinical investigations. To proactively address the needs of the Alport syndrome community, as well as offer clarity for future clinical research sponsors, the Alport Syndrome Foundation hosted a workshop to generate consensus recommendations for prospective ...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1016/j.kint.2020.02.029
更新日期:2020-06-01 00:00:00
abstract::Large epidemiological studies clearly demonstrate that multiple episodes of acute kidney injury contribute to the development and progression of kidney fibrosis. Although our understanding of kidney fibrosis has improved in the past two decades, we have limited therapeutic strategies to halt its progression. Myofibrob...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1016/j.kint.2017.03.037
更新日期:2017-11-01 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::Dihydrotestosterone (DHT) binding studies and the effects of DHT on the expression of beta-glucuronidase (Gus) and kidney androgen-regulated protein (KAP) genes and cell growth were investigated in immortalized early PKSV-PCT and late PKSV-PR proximal tubule cells, derived from transgenic mice carrying the L-pyruvate ...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1046/j.1523-1755.1998.00721.x
更新日期:1998-01-01 00:00:00
abstract::The genomic action of calcitriol is mediated through the interaction of the calcitriol receptor (VDR) with vitamin D response elements (VDREs) of the target genes. We have shown that the interaction of VDRs with VDREs is inhibited by uremic toxins. We hypothesize that uremic toxins form Schiff bases with the lysine re...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.1996.469
更新日期:1996-11-01 00:00:00
abstract::The possibility that the rabbit collecting tubule is heterogeneous with respect to electrical and morphologic properties was examined in isolated segments. Collecting tubules from rabbits treated with desoxycorticosterone acetate were dissected from various locations within the cortex and outer medulla, and the transe...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.1978.167
更新日期:1978-12-01 00:00:00
abstract:BACKGROUND:Low birth weight is an important risk factor for hypertension and unfavorable prognoses of a number of renal diseases. It is also associated with reduced kidney size and nephron number. A differentiation between the effects of low birth weight versus being born premature or small for gestational age has, how...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1111/j.1523-1755.2005.00451.x
更新日期:2005-08-01 00:00:00