Luxia Zhang

Peking University, Peping, Beijing, China

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Publications (37)173.15 Total impact

  • Yu Wang · Fangfang Yu · Yunfei Bao · Luxia Zhang · Hong Wang
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    ABSTRACT: Purpose Sodium restriction is important for the management of chronic kidney disease (CKD). The present study evaluated the factors impacting dietary sodium restriction in a cohort of Chinese patients with CKD. Methods A questionnaire on dietary sodium restriction was administered to patients with non-dialysis CKD who visited our CKD clinic from September 2014 to March 2015. Twenty-four-hour urinary sodium excretion (24-h UNa) was measured. Logistic regression was performed to examine the association between patient characteristics and sodium restriction. Results Two hundred and twenty-nine patients were included in the final analysis. Most of the patients (97.7 %) declared their awareness of the necessity of sodium restriction, but 27.3 % of them chose an incorrect sodium restriction limit. Most of the patients (85.2 %) also reported that they had taken actions to reduce their sodium consumption, with intolerance of sodium restriction as the most common reason for taking no actions. Only 42 patients (18.3 %) had a 24-h UNa of <100 mmol. Multivariable logistic regression showed that age and the use of condiments were independently associated with successful sodium restriction [odds ratio (95 % confidence interval) 1.04 (1.01–1.07), p = 0.006 and 0.38 (0.16–0.88), p = 0.023, respectively]. Most of the patients (83.0 %) did not know how to estimate their sodium intake from condiments. Conclusions This study indicates that there is much room for improvement in dietary sodium restriction in Chinese patients with CKD. Condiments as a hidden source of sodium intake should be stressed in the education of these patients.
    No preview · Article · Feb 2016 · International Urology and Nephrology
  • Damin Xu · Jicheng Lv · Jinwei Wang · Luxia Zhang · Hong Zhang
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    ABSTRACT: Aim: Studies investigating the association between blood phosphorus and renal outcomes yielded inconsistent results, and studies from Asian population are extremely limited. We initiated the present cohort study, aiming to prospectively examine the association between blood phosphorus and adverse renal outcomes in a prospective chronic kidney disease (CKD) cohort of Chinese patients majorly with glomerulonephritis. Methods: 1430 patients were involved in the study. Linear regression analyses were used to assess the relationship between phosphorus and the slope of eGFR. Cox regression analyses were used to assess the association between phosphorus and composite outcomes, which were defined as the presence of at least one of: eGFR halving, end stage renal disease, or death. Results: During follow-up for an average of 41.4 months, 196 patients developed composite outcomes. The time-average plasma phosphorus was independently associated with the slope of eGFR (β = -0.18, 95% CI: - 4.42 - -2.19, P < 0.001). Each 1 mg/dL increases of baseline and time-average phosphorus were respectively associated with a 1.33 [95% confidence interval (CI): 1.09-1.63; P = 0.005] and 2.79 (95%CI: 2.21-3.52; P < 0.001) fold higher risk of composite outcomes. Compared with participants with bottom quartile of time-average phosphorus, those with top quartile were at increased risk of composite outcomes, with a hazard ratio of 6.52 (95% CI: 3.05-13.90; P <0.001). Conclusion: Plasma phosphorus level is an independent risk factor of adverse renal outcomes in Chinese CKD patients majorly with glomerulonephritis. Compared with baseline value, time-average phosphorus has a stronger relationship with renal prognosis. This article is protected by copyright. All rights reserved.
    No preview · Article · Jan 2016 · Nephrology
  • Bixia Gao · Luxia Zhang · Minghui Zhao
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    ABSTRACT: Background: Previous studies revealed that among people with normal and high body mass index (BMI), metabolic abnormalities contribute to the increased risk of cardiovascular disease (CVD). However, studies investigating the metabolic features and its association with CVD are limited. Methods: A national representative sample of adult population in China was used. Underweight was defined as BMI <18.5kg/m(2). Participants who had less than 2 criteria of metabolic syndrome were classified as metabolically healthy; those who had 2 or more criteria of metabolic syndrome were classified as metabolically abnormal. Presence of CVD and albuminuria were compared among groups stratified by BMI and metabolic status. Results: Among 46308 participants, 2267 (4.6%) were classified as underweight; and 372 (16.4%) of them were identified as metabolically abnormal. Metabolic features were comparable between underweight but metabolically abnormal participants and obese participants. Compared with participants with normal weight and normal metabolic features, the underweight but metabolically abnormal participants were more likely to have CVD and albuminuria, with an adjusted odds ratio of 2.33 (95% confidence interval (CI) 1.34-4.05) and 2.56 (95% CI 1.86-3.52), respectively. Among underweight participants, factors associated with metabolic abnormal phenotype included leisure time physical inactivity, mild occupational physical activity, and waist circumference. Conclusions: Metabolically abnormal phenotype is not rare among underweight population in China, and preventive strategy against CVD should also be considered in that population.
    No preview · Article · Dec 2015 · European Journal of Internal Medicine
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    ABSTRACT: Aim: This study aimed to evaluate the cross-sectional association between serum phosphorus and arterial stiffness among a health checkup population. Methods: The study population included 26791 individuals without impaired kidney function. Arterial stiffness was measured by brachial-ankle pulse wave velocity (baPWV), ankle brachial index (ABI), and augmentation index (AI) by the radial artery waveform analysis. Linear or logistic regression model was used to appropriately evaluate the association between phosphorus levels and arterial stiffness markers. Results: The mean age of the population was 49 years and 67% were male. The phosphorus level was divided into quintiles. After multivariate adjustments, participants in the fourth (3.90-4.17 mg/dL) and fifth quintile (≥ 4.18 mg/dL) of serum phosphorus had increased the level of baPWV with linear regression coefficients of 11.9 [95% confidence interval (CI): 5.6-18.2] and 17.2 (95% CI: 10.9-23.5), respectively, compared with those in the first quintile (<3.34 mg/dL). No significant associations were found between each quintile of phosphorus and ABI <0.9. However, participants in the fifth quintile of phosphorus had an increased risk of ABI ≥ 1.3 with an odds ratio (OR) of 1.2 (95% CI: 1.0-1.5) compared with the reference quintile. Furthermore, the increased risks could be observed for AI >97% throughout the second to fifth quintile of phosphorus and the ORs were 1.1 (95% CI: 1.0-1.3), 1.2 (95% CI: 1.0-1.4), 1.3 (95% CI: 1.1-1.5), and 1.5 (95% CI: 1.3-1.7), respectively. Conclusions: Higher serum phosphorus levels, even within the normal range, are associated with markers of arterial stiffness among general population with normal kidney function.
    Preview · Article · Sep 2015 · Journal of atherosclerosis and thrombosis
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    ABSTRACT: Metabolic syndrome (MS) is prevalent, with an increasing contribution to the incidence of chronic kidney disease (CKD). The study of the relationship between them is important. The CKD survey, a national cross-sectional study, provided a large database to accomplish this study. The study population were 41 131 adults from this survey between 2008 and 2009. CKD was defined as estimate glomerular filtration rate (eGFR) less than 60 mL/min per 1.73 m2 or the presence of albuminuria. MS was diagnosed by National Cholesterol Education Program-Adult Treatment Panel III (ATPIII), ATPIII-modified or International Diabetes Federation (IDF) criteria. Logistic regression model was applied to study the impact of MS or its components on CKD or its components. The age and sex standardized prevalence of MS by ATPIII, ATPIII-modified and IDF criteria was 11.77% (11.13%-12.40%), 21.51% (20.69%-22.34%) and 16.67% (15.92-17.42)% respectively. Multivariate logistic regression models showed that MS and its components were associated with higher CKD prevalence. The risk for CKD and its components increased with the number of MS components. After adjusting for hypertension and diabetes, the odds ratios of MS for CKD decreased, but remained significantly more than 1 between 1.16(95%CI 1.07-1.26) and 1.37 (95% CI 1.25-1.50) across the different models. Similar results were found with albuminuria, while for decreased eGFR, after adjusting for hypertension and diabetes, the odds ratios of MS and MS components (except elevated TG) became insignificant. In conclusion, MS is prevalent and associated with a higher prevalence of CKD. Different MS components are associated with different risks for CKD, even after adjusting for hypertension and diabetes, which may mainly be contributed more by the increased risk for albuminuria than that for decreased eGFR. More attention must be paid to the population with MS, including those with elevated blood pressure and serum glucose.
    Preview · Article · Jul 2015 · PLoS ONE
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    ABSTRACT: Recent studies have indicated that phosphorus may play an independent pathogenic role in chronic kidney disease (CKD) progression, but some of those studies were underpowered and yielded inconsistent results. Systematic review and meta-analysis. Non-dialysis-dependent patients with CKD (transplant recipients were excluded). Studies assessing the risk ratio of serum phosphorus level on kidney failure and mortality for non-dialysis-dependent patients with CKD published from January 1950 to June 2014 were included following systematic searching of MEDLINE, EMBASE, and the Cochrane Library. Serum phosphorus level. Kidney failure, defined as doubled serum creatinine level, 50% decline in estimated glomerular filtration rate, or end-stage kidney disease. In 12 cohort studies with 25,546 patients, 1,442 (8.8%) developed kidney failure and 3,089 (13.6%) died. Overall, every 1-mg/dL increase in serum phosphorus level was associated independently with increased risk of kidney failure (hazard ratio, 1.36; 95% CI, 1.20-1.55) and mortality (hazard ratio, 1.20; 95% CI, 1.05-1.37). Existence of potential residual confounding could not be excluded. This meta-analysis suggests an independent association between serum phosphorus level and kidney failure and mortality among non-dialysis-dependent patients with CKD and suggests that large-scale randomized controlled trials should target disordered phosphorus homeostasis in CKD. Copyright © 2015 National Kidney Foundation, Inc. Published by Elsevier Inc. All rights reserved.
    No preview · Article · Mar 2015 · American Journal of Kidney Diseases
  • Hui Zhao · Yu Wang · Liqiang Meng · Luxia Zhang · Fang Wang · Xiaomei Li
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    ABSTRACT: To study the effect of blood pressure (BP) control on the progression of renal function in elderly patients with chronic kidney disease (CKD) stages 3 and 4. Patients aged 65 years or older in our CKD clinic with baseline CKD stages 3 and 4 and with more than one-year followup until February 2014 were included in this study. Those who had an annual loss of epidermal growth factor receptor (eGFR) for more than 5 ml·min(-1) · 1.73 m(-2), or reached CKD stage 5, and/or initiated renal replacement therapy were regarded as progression of CKD. Cox regression was used to analyze the effect of BP control on the progression of CKD. A total of 118 patients [57 men, mean age (73.8±5.1) years] were enrolled in the final analysis with median baseline eGFR of 37.9 (29.3, 46.7) ml·min(-1)·1.73 m(-2). The baseline BP was (137.0±18.0)/(72.5±10.3)mmHg (1 mmHg=0.133 kPa). During the median 26 months (12-94 m) follow-up period, the average treated BP was (136.2±12.1)/(70.5±6.9)mmHg. Among all the subjects, 64.4% of them reached the BP target (<140/90 mmHg) and 23.7% had progression of CKD. Treated systolic BP (HR = 1.504, 95% CI 1.023-2.212) and baseline eGFR (HR = 0.923, 95% CI 0.872-0.977) were independent risk factors for renal function progression in multivariate Cox analysis. Patients with treated systolic BP over 140 mmHg had higher risk to develop progression of CKD compared with those with systolic BP ≤140 mmHg (HR = 2.505, 95% CI 1.090-5.756). Tight blood pressure control is important in the routine care of elderly patients with CKD stage 3 and stage 4.
    No preview · Article · Mar 2015 · Zhonghua nei ke za zhi [Chinese journal of internal medicine]
  • Jinwei Wang · Luxia Zhang

    No preview · Article · Nov 2014 · American Journal of Hypertension
  • Yujing Pan · Luxia Zhang · Fang Wang · Xiaomei Li · Haiyan Wang
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    ABSTRACT: AimNonsteroidal anti-inflammatory drugs (NSAIDs) have been reported to be associated with adverse effects including kidney injury, while relevant studies from developing countries are limited. We aimed to explore the status of NSAIDs use in China, as well as cross-sectional association between NSAIDs intake and presence of chronic kidney disease (CKD).MethodsA national representative sample of 47,204 adults in China were used. Prevalence of regular NSAIDs use was reported. Age- and sex- matched controls of NSAIDs user were then selected. And the association between NSAIDs use and kidney injury were analyzed using logistic regression.ResultsAltogether 1,129 participants reported regular use of NSAIDs, with the adjusted prevalence of 3.6% (95% CI, 3.2%-3.9%). And 76.9% of them (n=868) had taken phenacetin-containing analgesics, with an adjusted prevalence of 3.2% (95% CI, 2.9%-3.5%). After adjusting for potential confounders, long-term NSAIDs intake (≥48 months) was associated with eGFR< 60 mL/min/1.73m2, with an OR of 2.36 (95% CI, 1.28-4.37).Conclusion Regular use of NSAIDs, especially phenacetin-containing drugs, is prevalent in China. And long-term NSAIDs intake (≥48 months) was independently associated with reduced renal function.
    No preview · Article · Sep 2014 · Nephrology
  • Fang Wang · Luxia Zhang · Haiyan Wang

    No preview · Article · Jun 2014 · American Journal of Kidney Diseases
  • Bixia Gao · Luxia Zhang · Haiyan Wang · Minghui Zhao
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    ABSTRACT: Background: Chronic kidney disease (CKD) is a common disorder associated with multiple adverse clinical consequences, especially cardiovascular risk and end-stage renal disease. A recent national survey demonstrated that CKD has become a leading health problem in China. There is an urgent need to implement an in-depth investigation of the CKD burden and also to explore underlying mechanisms of CKD progression and it association with adverse consequences. Methods: The Chinese Cohort Study of Chronic Kidney Disease (C-STRIDE) is the first national CKD cohort in China. It will enroll approximately 3 000 pre-dialysis CKD patients aged between 18 and 74 years and follow-up for at least 5 years. Questionnaires, anthropometric measures, laboratory tests, and biomaterials will be collected at baseline and annually. The principal clinical outcomes of the C-STRIDE consist of renal disease events, cardiovascular events, and death. Based on the longitudinal clinical data and biomaterials, the risk factors with CKD progression and other outcomes will be analyzed, and candidate markers and predicted models will be established. Conclusion: The C-STRIDE would provide important evidence for underlying mechanisms of CKD progression, valuable information for clinical guidelines, and healthcare policies in China.
    No preview · Article · Jun 2014 · Chinese medical journal
  • Jinwei Wang · Luxia Zhang · Fang Wang · Lisheng Liu · Haiyan Wang
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    ABSTRACT: Hypertension is one of the major risk factor for cardiovascular disease worldwide. The objective of this study was to investigate the prevalence, awareness, treatment, and control of hypertension in China. A multistage, stratified sampling method was used to obtain a representative sample of persons aged 18 years or older in the general population of China. Blood pressure (BP) was measured by sphygmomanometer 3 times at 5-minute intervals. Hypertension was defined as a systolic BP ≥ 140mm Hg, or diastolic BP ≥ 90mm Hg, or self-reported use of antihypertensive medications in the last 2 weeks irrespective of the BP. Altogether 50,171 subjects finished the survey across the entire country. The adjusted prevalence of hypertension was 29.6% (95% confidence interval (CI) = 28.9%-30.4%) and was higher among men than among women (31.2%, 95% CI = 30.1%-32.4%; vs. 28.0%, 95% CI = 27.0%-29.0%). The awareness, treatment among all hypertensive participants, control among all hypertensive participants, and control among treated hypertensive participants were 42.6%, 34.1%, 9.3%, and 27.4%, respectively. Multiple lifestyle factors were independently associated with presence of hypertension, including physical inactivity, habitual drinking, chronic use of nonsteroidal anti-inflammatory drugs, high body mass index, and central obesity. Hypertension is an important public health burden in China, and control of hypertension is still suboptimal. Several modifiable lifestyle activities were associated with hypertension and thus should be considered potential targets for intervention, with special attention to socioeconomically disadvantaged subpopulations in China.
    No preview · Article · Apr 2014 · American Journal of Hypertension
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    Bixia Gao · Luxia Zhang · Haiyan Wang
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    ABSTRACT: Previous studies indicated that lifestyle-related cardiovascular risk factors tend to be clustered in certain individuals. However, population-based studies, especially from developing countries with substantial economic heterogeneity, are extremely limited. Our study provides updated data on the clustering of cardiovascular risk factors, as well as the impact of lifestyle on those factors in China. A representative sample of adult population in China was obtained using a multistage, stratified sampling method. We investigated the clustering of four cardiovascular disease (CVD) risk factors (defined as two or more of the following: hypertension, diabetes, dyslipidemia and overweight) and their association with unhealthy lifestyles (habitual drinking, physical inactivity, chronic use of non-steroidal anti-inflammatory drugs (NSAIDs) and a low modified Dietary Approaches to Stop Hypertension (DASH) score). Among the 46,683 participants enrolled in this study, only 31.1% were free of any pre-defined CVD risk factor. A total of 20,292 subjects had clustering of CVD risk factors, and 83.5% of them were younger than 65 years old. The adjusted prevalence of CVD risk factor clustering was 36.2%, and the prevalence was higher among males than among females (37.9% vs. 34.5%). Habitual drinking, physical inactivity, and chronic use of NSAIDs were positively associated with the clustering of CVD risk factors, with ORs of 1.60 (95% confidence interval [CI] 1.40 to1.85), 1.20 (95%CI 1.11 to 1.30) and 2.17 (95%CI 1.84 to 2.55), respectively. The modified DASH score was inversely associated with the clustering of CVD risk factors, with an OR of 0.73 (95%CI 0.67 to 0.78) for those with modified DASH scores in the top tertile. The lifestyle risk factors were more prominent among participants with low socioeconomic status. Clustering of CVD risk factors was common in China. Lifestyle modification might be an effective strategy to control CVD risk factors.
    Preview · Article · Jun 2013 · PLoS ONE
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    ABSTRACT: Background/purpose: There is relatively little literature on prevalence of chronic kidney disease (CKD) prior to surgery in patients with upper urinary tract urothelial carcinoma (UTUC). We evaluated the prevalence and clinical associated factors of baseline CKD in patients with UTUC. Methods: There were 785 patients with a pathologic diagnosis of UTUC from January 2002 to December 2011 who were analyzed in this study. Estimated glomerular filtration rate (eGFR) was calculated by re-expressed Modification of Diet in Renal Disease (MDRD) formulas for the Chinese population. A multivariate logistic regression was performed to evaluate the odds ratios (ORs) for CKD stage 3 or higher in UTUCs after data differences were tested. Results: The prevalence of CKD in UTUCs presenting at our hospital was 58.6% and 70.8% in the group age 70 years and older. Older age [per year increased; OR = 1.050; 95% confidence interval (CI): 1.034-1.067], lower tumor stage (T stage; per stage increased; OR = 0.666; 95% CI: 0.544-0.816), higher tumor grade (per grade increased; OR = 1.392; 95% CI: 1.004-1.930) and the main tumor locating in the pelvis (ureter as reference; OR = 0.648; 95% CI: 0.475-0.885) were independently associated with decreased kidney function in the multivariate logistic regression. The use of serum creatinine (Scr) only to evaluate the renal function would ignore a large proportion of patients suffering from CKD stage 3 in UTUCs, especially in those older than 70 years (39.3% vs. 54.1%, p = 0.022). Conclusion: We demonstrated a high prevalence (58.6%) of CKD in patients with UTUC, particularly in the group older than 70 years (70.8%). Older age, lower T stage, higher tumor grade, and the main tumor locating in pelvis (ureter as reference) were independently associated with CKD in UTUCs.
    No preview · Article · May 2013 · Journal of the Formosan Medical Association
  • Jian Zhang · Luxia Zhang · Wenke Wang · Haiyan Wang
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    ABSTRACT: BACKGROUND: Long-term intake of herbs containing aristolochic acid (AA) has been reported to be associated with increased risk of chronic kidney disease (CKD), whereas population-based studies are limited. STUDY DESIGN: Cross-sectional study. SETTING & PARTICIPANTS: A national representative sample of 47,204 adults in China. PREDICTOR: Self-reported long-term use of medications containing AA. OUTCOMES & MEASUREMENTS: CKD was defined as estimated glomerular filtration rate (eGFR) <60 mL/min/1.73 m2 and/or the presence of albuminuria, defined as albumin-creatinine ratio >30 mg/g. RESULTS: 467 participants reported long-term AA intake, with a prevalence adjusting for a synthesized weight of 1.5% (95% CI, 1.2%-1.7%). After adjusting for age, sex, and other potential confounders, long-term AA intake was associated with eGFR <60 mL/min/1.73 m2 and albuminuria, with ORs of 1.83 (95% CI, 1.22-2.74) and 1.39 (95% CI, 1.03-1.87), respectively. Further adjustment for intake of nonsteroidal anti-inflammatory drugs did not change ORs substantially. A positive association between accumulated time of AA intake and kidney disease also was observed, with fully adjusted ORs of 1.07 (95% CI, 1.03-1.12) per 6-month longer intake for eGFR <60 mL/min/1.73 m2 and 1.04 (95% CI, 1.01-1.08) per 6-month longer intake for albuminuria. LIMITATIONS: Self-reported intake of herbs containing AA; the AA content of the preparations by weight was unknown; single measurement of indicators of kidney damage. CONCLUSIONS: Long-term intake of medications containing AA is prevalent in China and is associated with the presence of CKD.
    No preview · Article · Mar 2013 · American Journal of Kidney Diseases
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    ABSTRACT: Uromodulin (UMOD) genetic variants cause familial juvenile hyperuricemic nephropathy, characterized by hyperuricemia with decreased renal excretion of UMOD and uric acid, suggesting a role for UMOD in the regulation of plasma uric acid. To determine this, we screened common variants across the UMOD locus in one community-based Chinese population of 1000 individuals and the other population from 642 American twins and siblings of European and Hispanic ancestry. Transcriptional activity of promoter variants was estimated in luciferase reporter plasmids transfected into HEK-293 cells and mIMCD3 cells. In the primary Chinese population, we found that carriers of the GCC haplotype had higher plasma uric acid, and three promoter variants were associated with plasma uric acid. UMOD promoter variants displayed reciprocal effects on urine uric acid excretion and plasma uric acid concentration, suggesting a primary effect on renal tubular handling of urate. These UMOD genetic marker-on-trait associations for uric acid were replicated in the independent American cohort. Site-directed mutagenesis at trait-associated UMOD promoter variants altered promoter activity in transfected luciferase reporter plasmids. Thus, UMOD promoter variants seem to initiate a cascade of transcriptional and biochemical changes influencing UMOD secretion, leading to altered plasma uric acid levels.Kidney International advance online publication, 23 January 2013; doi:10.1038/ki.2012.449.
    No preview · Article · Jan 2013 · Kidney International
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    ABSTRACT: Background Family members of patients with end stage renal disease were reported to have an increased prevalence of chronic kidney disease (CKD). However, studies differentiated genetic and non-genetic family members are limited. We sought to investigate the prevalence of CKD among fist-degree relatives and spouses of dialysis patients in China. Methods Seventeen dialysis facilities from 4 cities of China including 1062 first-degree relatives and 450 spouses of dialysis patients were enrolled. Sex- and age- matched controls were randomly selected from a representative sample of general population in Beijing. CKD was defined as decreased estimated glomerular (eGFR < 60 mL/min/1.73 m2) or albuminuria. Results The prevalence of eGFR less than 60 mL/min/1.73 m2, albuminuria and the overall prevalence of CKD in dialysis spouses were compared with their counterpart controls, which was 3.8% vs. 7.8% (P < 0.01), 16.8% vs. 14.6% (P = 0.29) and 18.4% vs. 19.8% (P = 0.61), respectively. The prevalence of eGFR less than 60 mL/min/1.73 m2, albuminuria and the overall prevalence of CKD in dialysis relatives were also compared with their counterpart controls, which was 1.5% vs. 2.4% (P = 0.12), 14.4% vs. 8.4% (P < 0.01) and 14.6% vs. 10.5% (P < 0.01), respectively. Multivariable Logistic regression analysis indicated that being spouses of dialysis patients is negatively associated with presence of low eGFR, and being relatives of dialysis patients is positively associated with presence of albuminuria. Conclusions The association between being family members of dialysis patients and presence of CKD is different between first-degree relatives and spouses. The underlying mechanisms deserve further investigation.
    Preview · Article · Jan 2013 · BMC Nephrology
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    ABSTRACT: Background Previous studies have indicated that the performance of glomerular filtration rate (GFR) estimation equations vary according to the races of the target population. The Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation has not been validated in the Chinese population including patients with chronic kidney disease (CKD) and healthy controls.MethodsA total of 977 adult persons (682 patients with CKD and 295 healthy volunteers) from nine renal institutes of university hospitals located in nine geographic regions of China were enrolled in the study. A diagnostic test study comparing the CKD-EPI two-level and four-level race equation, the Modification of Diet in Renal Disease (MDRD) Study equation and the modified MDRD equation for Chinese (the Chinese equation). The (99m)Tc- diethylenetriamine pentaacetic acid dual plasma clearance was used as a reference method for measuring GFR.ResultsThe mean age of participants was 48.3 ± 16.0 years and 479 (49.0%) were male. The CKD-EPI two-level race equation and the Chinese equation performed better than the MDRD Study equation and CKD-EPI four-level race equation, with less bias (median difference between estimated GFR and reference GFR, 0.2 and 0.3 versus -2.4 and 3.0 mL/min/1.73 m(2)), improved precision (interquartile range of the difference, 20.5 and 20.8 versus 23.4 and 20.5 mL/min/1.73 m(2)) and greater accuracy (percentage of estimated GFR within 30% of reference GFR, 73.4 and 73.0% versus 69.8 and 70.1%).Conclusions The CKD-EPI two-level race equation and the Chinese equation performed similarly in the Chinese population, and both performed better than the MDRD Study equation and the CKD-EPI four-level race equation.
    Preview · Article · Nov 2012 · Nephrology Dialysis Transplantation
  • Haiyan Wang · Luxia Zhang · Li Zuo

    No preview · Article · Nov 2012 · American Journal of Kidney Diseases
  • Fukun Niu · Luxia Zhang · Xingyu Wang · Lisheng Liu · Haiyan Wang
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    ABSTRACT: Aims: To investigate the prospective association between changes in the urinary albumin-creatinine ratio (ACR) and abnormal ankle-brachial index (ABI) in a community-based Chinese population. Methods: This prospective cohort study included 799 residents aged 58.3±9.2 years and without a history of cardiovascular disease from an urban district of Beijing, China. Urinary ACR was measured at baseline, and at 4 and 6 years of follow-up. The 75th percentile of the baseline urinary ACR (5.82 mg/g) was used to define "high" ACR. The changes in urinary ACR were categorized as consistently low urinary ACR, intermittent high urinary ACR, and consistently high urinary ACR. ABI was measured at 6 years of follow-up. Multinomial logistic regression was used to evaluate the associations of changes in urinary ACR categories with the ABI categories. Results: During 6 years of follow-up, 16.1% of participants (n= 128) had low ABI and 13.9% of participants (n= 111) had high ABI. After adjusting for potential confounders including baseline albuminuria, individuals who had consistently high urinary ACR or intermittent high urinary ACR had a significantly higher risk for low ABI than individuals who had consistently low urinary ACR, with odds ratios (OR) of 2.75 (95%CI, 1.37-5.52) and 2.06 (95%CI, 1.18-3.57), respectively. No independent association was observed between changes in urinary ACR and high ABI among participants. Conclusion: Changes in urinary ACR below the definition for albuminuria predict low ABI among this community-based population without a history of cardiovascular disease.
    No preview · Article · Jun 2012 · Journal of atherosclerosis and thrombosis

Publication Stats

771 Citations
173.15 Total Impact Points

Institutions

  • 2008-2016
    • Peking University
      • Institute of Urology
      Peping, Beijing, China
  • 2006-2015
    • Beijing Medical University
      • • Institute of Nephrology
      • • Department of Medicine
      Peping, Beijing, China