Abstract：
:The relative importance of sarcopenia and its individual components as independent predictors of mortality in the dialysis population has not been determined. We estimated whole-body muscle mass using pre-dialysis bioimpedance spectroscopy measurements in 645 ACTIVE/ADIPOSE-enrolled prevalent hemodialysis patients from San Francisco and Atlanta. Low muscle mass was defined as two standard deviations below sex-specific means for young adults from NHANES and indexed to height2, body weight, body surface area, or body mass index. We evaluated the association of sarcopenia (low muscle mass) by four indexing methods, weak hand grip strength, and slow gait speed with mortality. Seventy-eight deaths were observed during a mean follow-up of 1.9 years. Sarcopenia was not significantly associated with mortality after adjusting for covariates. No muscle mass criteria were associated with death, regardless of indexing metrics. In contrast, having weak grip strength or slow walking speed was associated with mortality in the adjusted model. Only gait slowness significantly improved the predictive accuracy for death with an increase in C-statistic from 0.63 to 0.68. However, both gait slowness and hand grip weakness significantly improved the net reclassification index compared to models without performance measures (50.5% for slowness and 33.7% for weakness), whereas models with muscle size did not. Neither sarcopenia nor low muscle mass by itself was a better predictor of mortality than functional limitation alone in patients receiving hemodialysis. Thus, physical performance measures, including slow gait speed and weak hand grip strength, were associated with mortality even after adjustment for muscle size and other confounders.
journal_name
Kidney Intjournal_title
Kidney internationalauthors
Kittiskulnam P,Chertow GM,Carrero JJ,Delgado C,Kaysen GA,Johansen KLdoi
10.1016/j.kint.2017.01.024subject
Has Abstractpub_date
2017-07-01 00:00:00pages
238-247issue
1eissn
0085-2538issn
1523-1755pii
S0085-2538(17)30082-0journal_volume
92pub_type
杂志文章,多中心研究abstract：:The initiation of peritonitis is accompanied by a massive increase in intraperitoneal levels of IL-6. The source of this cytokine and the mechanism by which its levels are increased so dramatically are unknown. We examined the mechanism of IL-6 secretion by HPMC exposed to the milicu present in the peritoneal cavity d...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1996.430
更新日期：1996-10-01 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:Urea kinetic modeling (UKM) and food records are widely used to assess the dialysis adequacy. Clinicians use these methods in individual patients to decide whether the dialysis prescription should be adjusted. We determined the variation in UKM parameters and dietary intake within individual patients in orde...
journal_title：Kidney international
pub_type： 临床试验,杂志文章,多中心研究
doi：10.1046/j.1523-1755.1999.00412.x
更新日期：1999-05-01 00:00:00
abstract：:In previous studies from this laboratory it has been shown that ATP-ase activity in situ in the glomerular basement membrane (GBM) is clearly reduced in rats rendered nephrotic after treatment with adriamycin (ADR). The question was raised whether this reduction of ATP-ase activity in the GBM is due to toxic activity ...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1987.55
更新日期：1987-03-01 00:00:00
abstract：:We analyzed clinical and pathologic data from 36 recipients of 38 renal allografts who developed nephrotic syndrome following transplantation. Three groups were identified on the basis of histologic changes in the graft, and each group had a distinct clinical course. Nine grafts (23.7%) had recurrent glomerulonephriti...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1980.146
更新日期：1980-09-01 00:00:00
abstract：:Recent studies have greatly expanded our knowledge of initial events that lead to epithelial cell polarity. Epithelial polarity is defined, in part, by apical cell-cell tight junctions that separate the plasma membrane into the apical domain and the basolateral domain, as well as the zonula adherens that mediate inter...
journal_title：Kidney international
pub_type： 杂志文章,评审
doi：10.1038/sj.ki.5002579
更新日期：2007-12-01 00:00:00
abstract：:We designed a study to provide reversibility and comparative injury data for several candidate urinary biomarkers of kidney injury in the United States Food and Drug Administration biomarker qualification process. The nephrotoxin gentamicin was given to rats once on each of three days and the animals were killed durin...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.2010.463
更新日期：2011-06-01 00:00:00
abstract：:Alterations in myocardial wall texture stand out among ADPKD cardiovascular manifestations in hypertensive and normotensive patients. To elucidate their pathogenesis, we analyzed the cardiac phenotype in Pkd1(cond/cond)Nestin(cre) (CYG+) cystic mice exposed to increased blood pressure, at 5 to 6 and 20 to 24 weeks of ...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1016/j.kint.2016.04.028
更新日期：2016-09-01 00:00:00
abstract：:Simple life-table analyses have not identified the reasons for the steady improvement over the years in graft survival. The use of more sophisticated multifactorial statistical techniques is indicated to identify prognostic factors and to explore the "center effect" on graft survival. An agenda for retrospective analy...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1983.188
更新日期：1983-10-01 00:00:00
abstract：:In recent times, therapy for renal anemia has changed dramatically in that iron administration has increased and doses of erythropoiesis-stimulating agents (ESAs) have decreased. Here we used a prospective, observational, multicenter design and measured the serum ferritin and hemoglobin levels every 3 months for 2 yea...
journal_title：Kidney international
pub_type： 杂志文章,多中心研究
doi：10.1038/ki.2014.114
更新日期：2014-10-01 00:00:00
abstract：:The impact of dialysis on cognitive trends is uncertain. Kurella Tamura et al. evaluated cognitive trajectories in 212 participants from the Chronic Renal Insufficiency Cohort study and found that dialysis initiation was associated with a decline in executive function. This is consistent with a cerebrovascular basis f...
journal_title：Kidney international
pub_type： 评论,杂志文章
doi：10.1016/j.kint.2017.01.022
更新日期：2017-04-01 00:00:00
abstract：:We have previously shown that ultrasonography can detect hyperechogenic crystal deposits in the kidney medulla of patients with gout. In this cross-sectional study we investigated the frequency and clinical correlates of hyperechogenic kidney medulla in 502 consecutive primary consultants for gout (ACR/EULAR criteria)...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1016/j.kint.2020.08.024
更新日期：2021-01-01 00:00:00
abstract：BACKGROUND:Angiotensin II (Ang II) can up-regulate nicotinamide adenine dinucleotide phosphate [NAD(P)H] oxidase, whose product superoxide anion (O2-) can interact with nitric oxide (NO) to form peroxynitrite (ONOO-). We tested the hypothesis that Ang II subtype 1 (AT1) receptor activation enhances oxidative stress and...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1046/j.1523-1755.2002.00123.x
更新日期：2002-01-01 00:00:00
abstract：:Problems with vascular access are an important cause of morbidity and mortality in hemodialysis patients. We established a rodent model of arteriovenous fistula by anastomosing the end of a lateral vein to the side of the ventral artery of the rat tail. All operations were technically successful and in all animals the...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.2008.207
更新日期：2008-08-01 00:00:00
abstract：:Although case reports link proton-pump inhibitor (PPI) use and hypomagnesemia, no large-scale studies have been conducted. Here we examined the serum magnesium concentration and the likelihood of hypomagnesemia (<1.6 mg/dl) with a history of PPI or histamine-2 receptor antagonist used to reduce gastric acid, or use of...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.2012.452
更新日期：2013-04-01 00:00:00
abstract：:Although much emphasis has been placed on screening for albuminuria in type II diabetic patients, less attention has been focused on the role of glomerular filtration rate (GFR) in the assessment of risk. Herein, we examined the association between GFR and vascular complications in a consecutive cohort of 5174 type II...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/sj.ki.5000061
更新日期：2006-01-01 00:00:00
abstract：:Since the kidney medulla was reported to generate platelet activating factor (PAF), we investigated a possible effect of this agent on the reabsorptive function of in vitro microperfused medullary thick ascending limbs from mouse kidney (mTAL). PAF, 10(-7) M in the bath, significantly decreased the net chloride flux (...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1992.38
更新日期：1992-02-01 00:00:00
abstract：:Excess fatty acids accompanied by triglyceride accumulation in parenchymal cells of multiple tissues including skeletal and cardiac myocytes, hepatocytes, and pancreatic beta cells results in chronic cellular dysfunction and injury. The process, now termed lipotoxicity, can account for many manifestations of the 'meta...
journal_title：Kidney international
pub_type： 杂志文章,评审
doi：10.1038/sj.ki.5001834
更新日期：2006-11-01 00:00:00
abstract：:Augmentation of the CD36 pathway, which involves the uptake of several endogenous ligands including free fatty acids and oxidized low-density lipoprotein, contributes to the damage of proximal tubules and podocytes, whereas ablation of CD36 attenuates renal injury. Souza et al. demonstrate that 5A peptide can inhibit ...
journal_title：Kidney international
pub_type： 评论,杂志文章
doi：10.1016/j.kint.2016.01.009
更新日期：2016-04-01 00:00:00
abstract：:The antiproteinuric effect of angiotensin converting enzyme (ACE) inhibition in insulin-dependent diabetes mellitus (IDDM) patients with diabetic nephropathy varies considerably. Therefore, we tested the potential role of an insertion (I)/deletion (D) polymorphism of the ACE gene on this early antiproteinuric responsi...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1111/j.1523-1755.1998.00847.x
更新日期：1998-04-01 00:00:00
abstract：BACKGROUND:Candidate biomarkers for vasculopathy in systemic lupus erythematosus (SLE) include circulating endothelial cells and the recently identified endothelial protein C receptor (EPCR) which, when shed, promotes a thrombotic diathesis. This study sought correlation between plasma levels of soluble EPCR and diseas...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1111/j.1523-1755.2005.00385.x
更新日期：2005-07-01 00:00:00
abstract：BACKGROUND:Normalization of proteinuria and even regression of glomerulosclerosis seem to occur in progressive renal disease upon blockade of the renin-angiotensin system. Here we quantified the effect of a combination of an angiotensin converting enzyme (ACE) inhibitor and an angiotensin II (Ang II) receptor antagonis...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1046/j.1523-1755.2002.00526.x
更新日期：2002-09-01 00:00:00
abstract：BACKGROUND:Gene expression profiling of nephropathies may facilitate development of diagnostic strategies for complex renal diseases as well as provide insight into the molecular pathogenesis of kidney diseases. To test molecular based renal disease categorization, differential gene expression profiles were compared be...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1111/j.1523-1755.2004.00499.x
更新日期：2004-03-01 00:00:00
abstract：:Prior studies showed conflicting results regarding the association between 25-hydroxyvitamin D (25(OH)D) levels and mineral metabolism in end-stage renal disease. In order to determine whether the bioavailable vitamin D (that fraction not bound to vitamin D-binding protein) associates more strongly with measures of mi...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.2012.19
更新日期：2012-07-01 00:00:00
abstract：:During online hemodiafiltration, patients are directly infused with sterile substitution solutions to maintain fluid balance. Adequate water treatment and a well-organized quality control process are essential to provide non-pyrogenic fluids with consistent optimal quality. We sought to assess water quality, the water...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.2009.245
更新日期：2009-09-01 00:00:00
abstract：:Determination of serum oxalate concentration is important for the diagnosis and monitoring of hyperoxalurias, and extends to patients with all types of renal disease. Approximately 5 to 10 ml of blood is required for each test by conventional methods, and the test is not adapted for use in children. We developed a hig...
journal_title：Kidney international
pub_type：
doi：10.1038/ki.1997.505
更新日期：1997-12-01 00:00:00
abstract：:The effects of acidosis on renal function and morphology were examined in the isolated perfused rat kidney (IPK). Kidneys were perfused with oxygenated Krebs-Henseleit-albumin medium for 60 minutes at pH 7.4 or pH 7.0. At the lower pH, GFR was reduced by 25%, TRNa by 32% and oxygen consumption by 41% as compared to pe...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.1988.251
更新日期：1988-12-01 00:00:00
abstract：:Cytokines are important modulators of inflammation. The balance between pro- and anti-inflammatory cytokines determines whether the intensity of inflammatory response is within physiological limits or in the pathological range. The cytokine network is highly complex, containing interactive cascades of gene activation ...
journal_title：Kidney international
pub_type： 杂志文章,评审
doi：10.1038/sj.ki.5002391
更新日期：2007-09-01 00:00:00
abstract：:Copy number variations associate with different developmental phenotypes and represent a major cause of congenital anomalies of the kidney and urinary tract (CAKUT). Because rare pathogenic copy number variations are often large and contain multiple genes, identification of the underlying genetic drivers has proven to...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.2015.239
更新日期：2015-12-01 00:00:00
abstract：:Genetic variation at the MYH9 locus is linked to the high incidence of focal segmental glomerulosclerosis (FSGS) and non-diabetic end-stage renal disease among African Americans. To further define risk alleles with FSGS we performed a genome-wide association analysis using more than one million single-nucleotide polym...
journal_title：Kidney international
pub_type： 杂志文章
doi：10.1038/ki.2010.251
更新日期：2010-10-01 00:00:00
