Abstract:
:X-ray crystal interferometer-based X-ray phase-contrast microtomography (phase-contrast microtomography) is able to image microstructures within soft tissue without the use of a contrast agent. Here we determined the feasibility of using this technique in the non-destructive inspection of formalin-fixed kidney tissue from certain hamsters that spontaneously develop mesangial thickening with focal and segmental glomerulosclerosis, and from age-matched Syrian hamsters. We used a triple Laue-case X-ray interferometer with a 40 microm-thick analyzer, a sample cell, and an X-ray charge-coupled-device camera with a 4.34 microm pixel size. Images of glomeruli and tubular structures were similar to those seen using 40-100 x magnification on an optical microscope. In samples from two female glomerulosclerotic hamsters, seven scattered lesions were detected. The wedge-shaped pathological lesions included mild atrophic tubular walls, markedly dilated tubular lumen, high-density glomeruli, and widening of Bowman's space. The microvasculature was distinctly visualized in the specimens without any contrast agents. Hence, phase-contrast microtomography can detect small scattered lesions in diseased kidney tissue and is a powerful auxiliary tool for pre-histological evaluations.
journal_name
Kidney Intjournal_title
Kidney internationalauthors
Wu J,Takeda T,Lwin TT,Momose A,Sunaguchi N,Fukami T,Yuasa T,Akatsuka Tdoi
10.1038/ki.2009.42subject
Has Abstractpub_date
2009-05-01 00:00:00pages
945-51issue
9eissn
0085-2538issn
1523-1755pii
S0085-2538(15)53819-2journal_volume
75pub_type
杂志文章abstract::Autosomal dominant polycystic kidney disease (ADPKD) is an inherited, progressive nephropathy accounting for 4-10% of end stage renal disease worldwide. PKD1 and PKD2 are the most common disease loci, but even accounting for other genetic causes, about 7% of families remain unresolved. Typically, these unsolved cases ...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1016/j.kint.2019.08.038
更新日期:2020-02-01 00:00:00
abstract:BACKGROUND:Regular monitoring of dialysis grafts is recommended, but the value of dialysis graft blood flow monitoring and venous pressures in predicting subsequent outcomes are controversial. METHODS:Over a period of one month, we performed simultaneous flow and venous pressure monitoring in 71 dialysis patients with...
journal_title:Kidney international
pub_type: 临床试验,杂志文章
doi:10.1046/j.1523-1755.2001.060002762.x
更新日期:2001-08-01 00:00:00
abstract::A newly described glomerulotubular feedback loop may explain the relationship between glomerular damage, epitope spreading, tubulointerstitial nephritis, proteinuria as a progression factor, and the importance of the local milieu in kidney damage. It also opens the horizons for exciting innovative approaches to therap...
journal_title:Kidney international
pub_type: 杂志文章,评审
doi:10.1038/ki.2009.489
更新日期:2010-03-01 00:00:00
abstract::It has been convincingly documented that reactive oxygen species released from activated neutrophils mediate glomerular damage in experimental glomerulonephritis. Recent findings that antineutrophil cytoplasmic autoantibodies (ANCA) induce neutrophils to degranulate and produce oxygen radicals in vitro led us to explo...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.1993.233
更新日期:1993-07-01 00:00:00
abstract::Data from the national French Renal Epidemiology and Information Network (REIN) registry were used to compare survival between transplant recipients under age 65 who resumed dialysis after graft failure during 2007-2009 and transplant-naïve incident dialysis patients matched for age, gender, diabetes mellitus, and yea...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.2014.6
更新日期:2014-07-01 00:00:00
abstract:BACKGROUND:Advanced glycation end products (AGEs) accumulate in patients with diabetes, particularly at sites of vascular damage and within atherosclerotic lesions, but whether they have direct actions on vascular smooth muscle cells (VSMCs) is controversial. METHODS:AGEs were constructed and characterized by protein ...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1111/j.1523-1755.2005.00746.x
更新日期:2005-12-01 00:00:00
abstract::Diabetes mellitus is associated with natriuresis, whereas estrogen has been shown to be renoprotective in diabetic nephropathy and may independently regulate renal sodium reabsorption. The aim of this study was to determine the effects of 17-beta estradiol (E(2)) replacement to diabetic, ovariectomized (OVX) female ra...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/sj.ki.5000140
更新日期:2006-02-01 00:00:00
abstract::In studying the metabolic effects of diet potassium (K+) variation in normal humans, we noted that varying diet K+ within its normal range influenced inorganic phosphorus (Pi) homeostasis and serum calcitriol (1,25-dihydroxyvitamin D) levels. In six men who ingested a constant whole-foods diet containing (per 70 kg bo...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.1990.120
更新日期:1990-05-01 00:00:00
abstract:BACKGROUND:Genetic polymorphisms of the angiotensinogen (AGT) and angiotensin-converting enzyme (ACE) genes are associated with increased risk of hypertension and left ventricular hypertrophy (LVH) in hypertensive subjects. However, the extent to which these polymorphisms are related to LVH and remodeling in dialysis p...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1046/j.1523-1755.2003.00933.x
更新日期:2003-05-01 00:00:00
abstract::Amylin (islet amyloid peptide) plays a critical role in islet amyloidosis and in the development of beta-cell dysfunction in patients with diabetes; however, the involvement of amylin in renal amyloidosis has not been studied. For this reason, we surveyed 149 patients with biopsy-proven diabetic nephropathy (DN). The ...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/sj.ki.5002305
更新日期:2007-07-01 00:00:00
abstract::Acute kidney injury (AKI) occurs in about half of patients in septic shock and the mortality of AKI with sepsis is extremely high. An effective therapeutic intervention is urgently required. Statins are 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitors that also have pleiotropic actions. They have been report...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/sj.ki.5000300
更新日期:2006-05-01 00:00:00
abstract:BACKGROUND:There is accumulating evidence that adult bone marrow (BM) cells show unexpected plasticity, and can differentiate into a wide range of specialized cells. In the case of intrinsic renal glomerular cells, BM-derived cells have been reported to differentiate into both mesangial cells and podocytes. However, th...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1111/j.1523-1755.2005.00291.x
更新日期:2005-05-01 00:00:00
abstract::Progressive glomerulonephritis and attendant end-stage renal disease (ESRD) result from antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis. The optimum time of kidney transplantation in patients with ESRD due to ANCA-associated vasculitis (AAV) and the risk of renal or nonrenal recurrence of vasculitis a...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/sj.ki.5002244
更新日期:2007-06-01 00:00:00
abstract::Vascular calcification is recognized as a major contributor to cardiovascular disease (CVD) in end stage renal disease (ESRD) patients. Susceptibility to vascular calcification is genetically determined and actively regulated by diverse inducers and inhibitors. One of these inducers, hyperphosphatemia, promotes vascul...
journal_title:Kidney international
pub_type: 杂志文章,评审
doi:10.1038/ki.2008.644
更新日期:2009-05-01 00:00:00
abstract::The metabolism of phenylalanine and tyrosine was evaluated in six normal men, five chronically uremic men, and three men undergoing maintenance hemodialysis. Phenylalanine, tyrosine, and 13 acidic metabolites of those amino acids were measured in plasma postabsorptively and in plasma and urine after a phenylalanine lo...
journal_title:Kidney international
pub_type: 临床试验,杂志文章
doi:10.1038/ki.1978.104
更新日期:1978-08-01 00:00:00
abstract::The proportion of deceased donor kidneys procured for transplant but subsequently discarded has been growing steadily in the United States, but factors contributing to the rising discard rate remain unclear. To assess the reasons for and probability of organ discard we assembled a cohort of 212,305 deceased donor kidn...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1016/j.kint.2018.02.016
更新日期:2018-07-01 00:00:00
abstract::Polyomavirus-associated nephropathy (PVAN) is a significant complication after kidney transplantation, often leading to premature graft loss. In order to identify antiviral responses of the renal tubular epithelium, we studied activation of the viral DNA and the double-stranded RNA (dsRNA) sensors Toll-like receptor 3...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.2011.311
更新日期:2012-01-01 00:00:00
abstract:BACKGROUND:Mast cells are growth factor-rich, bone marrow-derived cells that infiltrate injured tissue where they have been implicated in the pathogenesis of progressive fibrosis. METHODS:Mast cell infiltration and the expression of related chemoattractants was examined following 5/6 nephrectomy, a model of progressiv...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1046/j.1523-1755.2003.00183.x
更新日期:2003-09-01 00:00:00
abstract::Hemodialysis adequacy can be quantified using ultraviolet absorbance of the spent dialysate, or by analysis of dialysate conductivity at the dialyzer inlet and outlet in response to changes in dialysate electrolyte concentration. These measurements can be made at every dialysis, including initial and acute treatments ...
journal_title:Kidney international
pub_type: 评论,杂志文章
doi:10.1038/ki.2010.218
更新日期:2010-11-01 00:00:00
abstract::Cardiac surgery associated-acute kidney injury (CS-AKI) occurs in 30-50% of patients undergoing surgery for congenital heart disease. Here we determine if CS-AKI is associated with chronic kidney disease (CKD) in patients with congenital heart disease. Using Danish regional population-based registries, our cohort stud...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1016/j.kint.2017.02.021
更新日期:2017-09-01 00:00:00
abstract:BACKGROUND:Renal salt wasting and hypotension are some of the frequent complications in patients treated with cis-diamminedichloroplatinum (II) (cDDP), and it is suggested that cDDP produces an abnormality in the renin-angiotensin system. However, not only the underlying mechanism but also prophylactic treatment of thi...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1046/j.1523-1755.2000.00307.x
更新日期:2000-10-01 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 association between dietary sodium and potassium intake with the development of kidney disease remains unclear, particularly among younger individuals. Here, we determined whether dietary sodium and potassium intake are associated with incident chronic kidney disease (CKD) using data from 1,030 adults (age 23-35 i...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1016/j.kint.2020.02.037
更新日期:2020-07-01 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::Patients with chronic kidney disease have elevated circulating asymmetric dimethylarginine (ADMA). Recent studies have suggested that ADMA impairs endothelial nitric oxide synthase (eNOS) by effects other than competition with the substrate L-arginine. Here, we sought to identify the molecular mechanism by which incre...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1038/ki.2011.476
更新日期:2012-04-01 00:00:00
abstract::Emerging evidence of crosstalk between glomerular cells in pathological settings provides opportunities for novel therapeutic discovery. Here we investigated underlying mechanisms of early events leading to filtration barrier defects of podocyte and glomerular endothelial cell crosstalk in the mouse models of primary ...
journal_title:Kidney international
pub_type: 杂志文章
doi:10.1016/j.kint.2019.05.007
更新日期:2019-10-01 00:00:00
abstract::The OSCAR study was a multicenter, prospective randomized open-label blinded end-point study of 1164 Japanese elderly hypertensive patients comparing the efficacy of angiotensin II receptor blocker (ARB) uptitration to an ARB plus calcium channel blocker (CCB) combination. In this prospective study, we performed presp...
journal_title:Kidney international
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1038/ki.2012.326
更新日期:2013-01-01 00:00:00
abstract::In organ transplantation, ischemia/reperfusion (I/R) results in damage that may affect cell viability and lead to organ failure. I/R injury involves a complex cascade of events, including loss of energy, derangement of the ionic hemostasis, production of reactive oxygen species, and cell death. In this context, mitoch...
journal_title:Kidney international
pub_type: 杂志文章,评审
doi:10.1111/j.1523-1755.2004.761_9.x
更新日期:2004-08-01 00:00:00
abstract::Bone marrow (BM) cells are reported to contribute to the process of regeneration following myocardial infarction. The present study examined two independent clonal studies to determine the origin of bone marrow (BM)-derived cardiomyocytes. First, we transplanted single CD34(-)c-kit(+)Sca-1(+)lineage(-) side population...
journal_title:Kidney international
pub_type: 杂志文章,评审
doi:10.1111/j.1523-1755.2005.00624.x
更新日期:2005-11-01 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