[Show abstract][Hide abstract] ABSTRACT: Background:
Previous studies report conflicting results on the benefit of peritoneal dialysis (PD) patients treated with low glucose degradation product (GDP) solution. The effects of low GDP solution on body fluid status and arterial pulse wave velocity (PWV) have not been studied.
We randomly assigned 68 incident PD patients to low GDP (Intervention Group) or conventional solutions (Control Group); 4 dropped off before they received the assigned treatment. Patients were followed for 52 weeks for changes in ultrafiltration, residual renal function, body fluid status and arterial PWV.
After 52 weeks, Intervention Group had higher overhydration (3.1 ± 2.6 vs 1.9 ± 2.2 L, p = 0.045) and extracellular water volume (17.7 ± 3.9 vs 15.8 ± 3.1 L, p = 0.034) than Control Group. There was no significant difference in PWV between groups. There was no significant difference in residual renal function between the Groups. Intervention Group had lower ultrafiltration volume than Control Group at 4 weeks (0.45 ± .0.61 vs 0.90 ± 0.79 L/day, p = 0.013), but the difference became insignificant at later time points. Intervention Group had lower serum CRP levels than Control Group (4.17 ± 0.77 vs 4.91 ± 0.95 mg/dL, p < 0.0001).
Incident PD patients treated with low GDP solution have less severe systemic inflammation but trends of less ultrafiltration, and more fluid accumulation. However, the effects on ultrafiltration and fluid accumulation disappear with time. The long term effect of low GDP solution requires further study.
PLoS ONE 10/2015; 10(10):e0141425. DOI:10.1371/journal.pone.0141425 · 3.23 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: Background Weight gain is common amongst patients who start peritoneal dialysis (PD). However, the prevalence, risk factors, and long-term implications of body weight gain in new PD patients have not been explored. Methods We studied 444 consecutive new PD patients. Body weight at the time of initiation of PD and 1 year later, and related clinical factors, were reviewed. Patients were followed for 60.9 ± 32.8 months for survival analysis. Results The mean weight change after 1 year of PD was 1.34 ± 3.27 kg; 109 patients (24.6%) had weight gain > 3 kg. Patients without any peritonitis episodes during the 1st year of PD had significantly more weight gain than those who had peritonitis (1.58 ± 3.17 vs. 0.16 ± 3.56 kg, p = 0.001). There were no significant correlations between body weight change and glucose load, peritoneal transport characteristics, dialysis adequacy index, or baseline residual renal function. For patients with weight loss > 0.5 kg, weight change within 0.5 kg, weight gain > 0.5-3.0 kg, and weight gain > 3 kg, the patient survival rates at 60 months were 45.0%, 54.8%, 54.0%, and 52.9%, respectively (p = 0.213), while technique survival were 28.1%, 40.3%, 40.8%, and 36.7%, respectively (p = 0.03). Conclusion Weight gain is common among Chinese patients during the 1st year of PD but is not associated with any adverse clinical outcome. In contrast, weight loss during the 1st year of PD is common amongst PD patients who have peritonitis, and is associated with worse technique survival subsequently.
Hong Kong Journal of Nephrology 10/2015; 17(2):28-35. DOI:10.1016/j.hkjn.2015.08.001
[Show abstract][Hide abstract] ABSTRACT: Podocyte depletion is a characteristic feature of progressive renal failure. We hypothesize that studying the podocyte mRNA level in urinary sediment may provide diagnostic and prognostic information in adult nephrotic syndrome.
We studied 25 patients with minimal change nephropathy (MCN), 25 with focal segmental glomerulosclerosis (FSGS), and 17 healthy controls. The mRNA levels of nephrin, podocin, and synaptopodin in urinary sediment were quantified.
There were significant differences in the urinary sediment nephrin and podocin, but not synaptopodin, mRNA levels between diagnosis groups. Post-hoc analysis further showed that urinary nephrin mRNA levels of the MCN group were lower than those in the control and FSGS groups, although the difference between MCN and FSGS groups did not reach statistical significance. The degree of proteinuria inversely correlated with urinary nephrin mRNA levels in the MCN (r = -0.526, p = 0.007) as well as in the FSGS group (r = -0.521, p = 0.008). For the FSGS group, the rate of renal function decline significantly correlated with baseline urinary synaptopodin mRNA levels (r = -0.496, p = 0.012).
Urinary nephrin and podocin mRNA levels were reduced in patients with MCN and probably FSGS, and the magnitude of reduction correlated with the degree of proteinuria. Urinary synaptopodin mRNA levels correlated with the subsequent rate of renal function decline in patients with FSGS. Our result indicates that urine sediment podocyte mRNA levels provide novel insights in the pathophysiology of nephrotic syndrome and could be useful for risk stratification.
[Show abstract][Hide abstract] ABSTRACT: Circulating bacterial DNA fragment is related to systemic inflammatory state in peritoneal dialysis (PD) patients. We hypothesize that plasma bacterial DNA level predicts cardiovascular events in new PD patients.
We measured plasma bacterial DNA level in 191 new PD patients, who were then followed for at least a year for the development of cardiovascular event, hospitalization, and patient survival.
The average age was 59.3 ± 11.8 years; plasma bacterial DNA level 34.9 ± 1.5 cycles; average follow up 23.2 ± 9.7 months. At 24 months, the event-free survival was 86.1%, 69.8%, 55.4% and 30.8% for plasma bacterial DNA level quartiles I, II, III and IV, respectively (p < 0.0001). After adjusting for confounders, plasma bacterial DNA level, baseline residual renal function and malnutrition-inflammation score were independent predictors of composite cardiovascular end-point; each doubling in plasma bacterial DNA level confers a 26.9% (95% confidence interval, 13.0 - 42.5%) excess in risk. Plasma bacterial DNA also correlated with the number of hospital admission (r = -0.379, p < 0.0001) and duration of hospitalization for cardiovascular reasons (r = -0.386, p < 0.0001). Plasma bacterial DNA level did not correlate with baseline arterial pulse wave velocity (PWV), but with the change in carotid-radial PWV in one year (r = -0.238, p = 0.005).
Circulating bacterial DNA fragment level is a strong predictor of cardiovascular event, need of hospitalization, as well as the progressive change in arterial stiffness in new PD patients.
PLoS ONE 05/2015; 10(5):e0125162. DOI:10.1371/journal.pone.0125162 · 3.23 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: We studied the urinary sediment mRNA level of Th9- and Th22-related cytokines in patients with systemic lupus erythematosus (SLE).
We quantified urinary mRNA levels of interleukin (IL) 9, IL-10, IL-22, and their corresponding transcription factors in 73 patients with active lupus nephritis, 13 patients with hypertensive nephrosclerosis (HTN), and 25 healthy subjects.
There was no detectable IL-9 mRNA in all samples. Patients with proliferative lupus nephritis had significantly lower urinary IL-22 mRNA levels than those with nonproliferative nephritis (2.2 ± 5.4 vs 8.6 ± 20.0 copies, p = 0.019), and urinary IL-22 mRNA level inversely correlated with the histological activity index (r = -0.427, p < 0.0001). In contrast, patients with lupus nephritis had significantly higher urinary IL-10 mRNA levels than patients with HTN (7.8 ± 18.5 vs 1.9 ± 4.0 copies, p = 0.012), and urinary IL-10 mRNA levels correlated with its intrarenal mRNA levels (r = 0.337, p = 0.004) and SLE disease activity index (r = 0.277, p = 0.018). Urinary IL-10 mRNA level was significantly lower among patients who achieved complete remission than those with partial remission or no response (4.1 ± 6.5 vs 14.1 ± 28.0 copies, p = 0.036).
Urinary IL-22 mRNA level is decreased in patients with SLE with proliferative nephritis, while urinary IL-10 mRNA levels correlates with its intrarenal mRNA level and disease activity. Urinary IL-10 mRNA levels may also predict treatment response. These results suggest that urinary mRNA levels of IL-10 and IL-22 might be used as biomarkers for assessing disease activity and risk stratification in lupus nephritis.
The Journal of Rheumatology 05/2015; 42(7). DOI:10.3899/jrheum.140954 · 3.19 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: Inflammation and fibrosis play important roles in the progression of diabetic nephropathy. We determine the urinary mRNA levels of ELR- CXC chemokine ligand and extracellular matrix in diabetic nephropathy.
We studied 26 patients with biopsy-proven diabetic nephropathy, 15 with hypertensive nephrosclerosis, and 10 healthy controls. Urinary mRNA levels of CXCL9, CXCL10, CXCL11, collagen I A1 chain (COL1A1), collagen IV A3 chain (COL4A3), and fibronectin were measured. Patients were followed for 36.9 ± 7.4 months to determine the rate of glomerular filtration rate (GFR) decline.
Urinary mRNA levels of CXCL10 and CXCL11 are decreased, and those of COL1A1 and fibronectin are increased in diabetic nephropathy. Baseline estimated GFR correlates urinary mRNA level of CXCL9 (r = 0.583, p = 0.002) and CXCL11 (r = 0.703, p < 0.0001), respectively. The rate of GFR decline significantly correlates with urinary CXCL9 (r = -0.618, p = 0.0008) and CXCL11 mRNA levels (r = -0.726, p < 0.0001). Multivariate linear regression analysis confirms that urinary CXCL9 mRNA level is independently associated with the rate of GFR decline, while the correlation with urinary CXCL11 mRNA level has borderline significance.
Urinary CXCL9 and CXCL11 mRNA levels correlate with baseline renal function. The rate of renal function decline correlates with urinary CXCL9 mRNA level. Our results suggest that urinary CXCL9 mRNA levels may be used for risk stratification of diabetic nephropathy. This article is protected by copyright. All rights reserved.
This article is protected by copyright. All rights reserved.
Diabetes/Metabolism Research and Reviews 04/2015; 31(7). DOI:10.1002/dmrr.2654 · 3.55 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: Macrolide antibiotics, erythromycin, clarithromycin and azithromycin are commonly prescribed for upper respiratory infection,
and their use has recently been further linked to immunomodulatory effects. With the widespread and expanded use of macrolides,
special attention should be paid to their potential adverse effects. We reported two cases of end-stage renal disease (ESRD)
patients who developed hallucinations such as vivid images of worms after taking clarithromycin. Similar to previous case
reports of clarithromycin neurotoxicity, the visual hallucination resolved upon cessation of clarithromycin. Furthermore,
we discussed the pharmacokinetic properties and other toxicities of macrolide antibiotics in patients with chronic kidney
disease and ESRD.
[Show abstract][Hide abstract] ABSTRACT: Background/aims:
Endotoxaemia, a driver of systemic inflammation, appears to be driven by dialysis-induced circulatory stress in haemodialysis (HD) patients. More frequent HD regimens are associated with lower ultrafiltration requirements, improved haemodynamic stability and lower systemic inflammation. This study investigated the hypothesis that more frequently dialysed patients, with reduced exposure to dialysis-induced haemodynamic perturbation, would have lower circulating endotoxin (ET) levels.
A cross-sectional study of 86 established HD patients compared three groups: conventional HD 3× per week (HD3, n = 56), frequent HD 5-6× per week (SDHD, n = 20), and nocturnal HD (NHD, n = 10). Data collection included ultrafiltration volume and rate, serial blood pressures and blood sampling with quantification of ET, troponin T and high-sensitivity CRP (hsCRP).
Pre-dialysis serum ET was highest in the conventional HD group (HD3 0.66 ± 0.29 EU/ml vs. NHD 0.08 ± 0.04 EU/ml). Across the study population, severity of endotoxaemia was associated with higher ultrafiltration rates, degree of intradialytic hypotension, troponin T and hsCRP levels. NHD patients had the lowest ultrafiltration requirements, the greatest haemodynamic stability and lower ET levels.
More frequent HD regimens are associated with lower levels of circulating ET compared with conventional HD. Reduced ET translocation may be related to the greater haemodynamic stability of these treatments, with superior maintenance of splanchnic perfusion.
Nephron Clinical Practice 11/2014; 128(1-2). DOI:10.1159/000366519 · 1.40 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: Background
Evidence implicated the diagnostic significance of microRNAs in whole urine/urine sediments in urothelial carcinoma of the bladder (UCB). However, the contaminated blood cells in patients with haematouria significantly altered the expression profiles of urinary microRNA, influencing the test accuracy.
MicroRNA profiles of the urine supernatants of UCB patients and controls without any malignancy and profiles of malignant and corresponding normal mucosa tissues from the patients were determined by microRNA microarray and compared to identify differentially expressed microRNAs. The differential expression was verified in the tissues of an independent patient cohort by RT-qPCR. The diagnostic significance of selected microRNAs as biomarkers in the urine supernatant was investigated in the expanded cohorts.
MicroRNA-99a and microRNA-125b were down-regulated in the urine supernatants of UCB patients. The degree of down-regulation was associated with the tumor grade. A diagnostic model was developed using a combined index of the levels of microRNA-99a and microRNA-125b in the urine supernatant with a sensitivity of 86.7%, a specificity of 81.1% and a positive predicted value (PPV) of 91.8%. Discriminating between high- and low-grade UCB, the model using the level of microRNA-125b alone exhibited a sensitivity of 81.4%, a specificity of 87.0% and a PPV of 93.4%.
The results revealed a unique microRNA expression signature in the urine supernatants of UCB patients for the development of molecular diagnostic tests. An effective cell-free urinary microRNA-based model was developed using a combined index of the levels of microRNA-99a and microRNA-125b to detect UCB with good discriminating power, high sensitivity and high specificity.
PLoS ONE 07/2014; 9(7):e100793. DOI:10.1371/journal.pone.0100793 · 3.23 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: Nephrotic syndrome is a common problem in clinical nephrology. In general, nephrotic syndrome is pathognomonic of glomerular disease, but the underlying pathological etiology is highly variable. Although kidney biopsy is the standard method to classify the histology and determine the extent of renal scarring, it is an invasive procedure with potential complications, and is generally not suitable for serial monitoring. MicroRNAs (miRNA) are short noncoding RNA molecules that regulate gene expression. Recent studies show that urinary levels of several miRNAs are significantly changed in nephrotic syndrome; some appear to be disease specific, others being damage related. Specifically, urinary miR-192 level is lower in patients with diabetic nephropathy than other causes of nephrotic syndrome, while patients with minimal change nephropathy or focal glomerulosclerosis had higher urinary miR-200c level than those with other diagnosis. Elevated urinary miR-21, miR-216a, and miR-494 levels may predict a high risk of disease progression and renal function loss, irrespective of the histological diagnosis. Furthermore, a number of small scale studies suggest that urinary levels of certain miRNA targets may assist in the diagnosis and assessment of disease activity in patients with lupus nephritis. Since miRNA in urinary sediment is relatively stable and easily quantified, it has the potential to be developed as biomarkers for disease diagnosis and monitoring. However, available published evidence is limited to small scale studies. Further research is urgently needed in many areas.
[Show abstract][Hide abstract] ABSTRACT: IgA nephropathy is globally the most common primary glomerulonephritis, but the pathogenesis of this condition is still only partially understood. MicroRNAs (miRNAs) are short, noncoding RNA molecules that regulate gene expression. Genome-wide analysis of renal miRNA expression has identified a number of novel miRNAs related to immunological and pathological changes. Specifically, overexpression of miR-148b might explain the aberrant glycosylation of IgA1, which has a central pathogenetic role in the early phase of IgA nephropathy. By contrast, miR-29c is an antifibrotic miRNA that is probably important in the late stages of disease progression. In addition, urinary levels of several miRNAs are significantly changed in patients with IgA nephropathy compared with healthy individuals; some alterations seem to be disease-specific, whereas others are apparently damage-related. As miRNAs in urinary sediment are relatively stable and easily quantified, they have the potential to be used as biomarkers for the diagnosis and monitoring of disease. However, to date, limited data are available on the role of miRNAs in the pathogenesis of IgA nephropathy and their potential application as biomarkers. Consequently, further studies are urgently needed to address this shortfall. Here, we review the available literature on miRNAs in relation to IgA nephropathy.
[Show abstract][Hide abstract] ABSTRACT: Background
Secondary hyperparathyroidism is common amongst dialysis patients and is associated with increased morbidity and mortality. Vitamin D analogues are effective treatments, but the adverse effects of traditional vitamin D preparations, especially hypercalcemia, are often dose-limiting.
We studied the efficacy and safety of paricalcitol for the treatment of secondary hyperparathyroidism in hemodialysis patients.
We reviewed 13 adult hemodialysis patients treated with oral paricalcitol. The dosage of paricalcitol was adjusted according to the clinical response.
Serum parathyroid hormone (PTH) level decreased by 47.3 ± 34.3% at 3 months and 74.7 ± 36.8 % by 3 years. Eight patients (62%) responded and had reduction in PTH levels by at least 30%; seven of them (87.5%) responded within the first 3 months. Responders had a significantly lower baseline PTH level than the nonresponders (64.3 ± 32.2 vs. 138.5 ± 64.0 pmol/L, p = 0.02). None of the patients developed hypercalcemia, but hyperphosphatemia was present in all patients.
There is a substantial improvement in PTH levels by paricalcitol treatment in hemodialysis patients with secondary hyperparathyroidism, and paricalcitol is generally well tolerated. Our results suggest that patients with more advanced secondary hyperparathyroidism tend to have a less favorable response.
背景：在血液透析患者間，次發性甲狀旁腺功能亢進是常見的疾病，會明顯增加患者的死亡與患病率。維生素 D 類似物通常是有效的療法，但傳統製劑的臨床應用常受限於不良作用如高鈣血症的出現。本研究以患有次發性甲狀旁腺功能亢進的血液透析患者為對象，調查了 paricalcitol 在這方面的功效與安全性。
方法：本研究回顧了 13 位成年血液透析患者，正在接受口服 paricalcitol 治療，其劑量根據臨床反應作出調整。
結果：經過 3 個月及 3 年後，血清副甲狀腺素 (PTH) 水平分別下降 47.3 ± 34.3% 及 74.7 ± 36.8%。其中，8 人 (62%) 反應良好，PTH 降幅達至少 30%；他們之中有 7 人 (87.5%) 在首 3 個月呈現反應。相比於不反應者，反應者的基線 PTH 明顯較低 (64.3 ± 32.2 vs 138.5 ± 64.0 pmol/L，p = 0.02)。治療期間，無任何人出現高鈣血症，但所有病人均有高磷酸血症的現象。
結論：對於患有次發性甲狀旁腺功能亢進的血液透析患者，paricalcitol 可有效降低 PTH，且耐受性良好。本研究的結果亦顯示，較晚期的次發性甲狀旁腺功能亢進患者，其療效反應可能較為不明顯。
Hong Kong Journal of Nephrology 04/2014; 16(1). DOI:10.1016/j.hkjn.2014.02.002
[Show abstract][Hide abstract] ABSTRACT: Residual renal function (RRF) is an important prognostic indicator in continuous ambulatory peritoneal dialysis (CAPD) patients. We determined the predictors of RRF loss in a cohort of incident CAPD patients.
We reviewed the record of 645 incident CAPD patients. RRF loss is represented by the slope of decline of residual glomerular filtration rate (GFR) as well as the time to anuria.
The average rate of residual GFR decline was -0.083 ± 0.094 mL/min/month. The rate of residual GFR decline was faster with a higher proteinuria (r = -0.506, p < 0.0001) and baseline residual GFR (r = -0.560, p < 0.0001). Multivariate analysis showed that proteinuria, baseline residual GFR, and the use of diuretics were independent predictors of residual GFR decline. Cox proportional hazard model showed that proteinuria, glucose exposure, and the number of peritonitis episodes were independent predictors of progression to anuria, while a higher baseline GFR was protective. Each 1 g/day of proteinuria is associated with a 13.2% increase in the risk of progressing to anuria, each 10g/day higher glucose exposure is associated with a 2.5% increase in risk, while each peritonitis episode confers a 3.8% increase in risk.
Our study shows that factors predicting the loss of residual solute clearance and urine output are different. Proteinuria, baseline residual GFR, and the use of diuretics are independently related to the rate of RRF decline in CAPD patients, while proteinuria, glucose exposure, and the number of peritonitis episodes are independent predictors for the development of anuria. The role of anti-proteinuric therapy and measures to prevent peritonitis episodes in the preservation of RRF should be tested in future studies.
[Show abstract][Hide abstract] ABSTRACT: In the general population, metabolic syndrome (MES) is associated with cardiovascular risk. However, the definition of MES and its prognostic implication among patients undergoing peritoneal dialysis (PD) remain controversial.
We studied 329 prevalent PD patients from April 2008 to April 2011 and compared four sets of diagnostic criteria: the original World Health Organization (WHO) criteria, the International Diabetes Federation (IDF) criteria, the original National Cholesterol Education Program (NCEP) criteria, and the modified NCEP criteria. Nutritional status, body composition, and arterial pulse-wave velocity were measured. Patients were followed for 31.7±15.5 months.
Among the 329 patients, 175 (53.2%) fulfilled the WHO criteria, 177 (53.8%) the IDF criteria, 199 (60.5%) the original NCEP criteria, and 218 (66.3%) the modified NCEP criteria. The agreement among the four sets of criteria was fair to moderate (Cohen κ=0.35-0.58). Patients with MES defined by all four criteria had higher adipose tissue mass than the others, although the difference in adipose tissue mass was most pronounced with the IDF criteria (MES versus no MES, 18.2±7.9 versus 10.7±5.9 kg; P<0.001). Patients with MES, as defined by the IDF criteria, were hospitalized longer than those without MES (3.82 [interquartile range, 0.00-12.61] versus 1.07 [interquartile range, 0.00-6.43]) days per year of follow-up; P=0.01). Overall survival, cardiovascular survival, or technique survival did not differ between patients with and without MES, irrespective of the diagnostic criteria after adjustment for diabetic status.
In patients undergoing PD, overall survival, cardiovascular survival, and technique survival did not differ between patients with and without MES, irrespective of diabetic status and diagnostic criteria. Further studies are needed to establish a new definition or clinical scoring system for risk stratification of PD patients.
Clinical Journal of the American Society of Nephrology 01/2014; 9(4). DOI:10.2215/CJN.06620613 · 4.61 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: Fluid overload probably contributes to the cardiovascular risk of peritoneal dialysis (PD) patients. We studied the relationship between over-hydration as determined by bioimpedance spectroscopy and dialysis adequacy, nutritional status, and arterial stiffness in Chinese PD patients.
We studied 122 asymptomatic prevalent PD patients: bioimpedance spectroscopy, arterial pulse wave velocity, dialysis adequacy and nutritional status were determined.
Of the 122 patients, 88 (72.1%) had over-hydration of ≥ 1 L, while 25 (20.5%) were ≥ 5 L. Over-hydration significantly correlated with total body water (r = 0.474, p < 0.001) and extracellular water (r = 0.755, p < 0.001). Over-hydration was more severe in male and diabetic patients, and significantly correlated with Charlson's comorbidity score, blood pressure, body mass index, body weight, peritoneal transport characteristics, and carotid-femoral pulse wave velocity. Over-hydration significantly correlated with Kt/V (r = -0.287, p = 0.016), serum albumin level (r = -0.465, p < 0.001) and malnutrition inflammation score (r = 0.410, p = 0.006), but not residual renal function.
Over-hydration is common in asymptomatic Chinese PD patients. The degree of over-hydration is particularly pronounced in patients who are inadequately dialyzed, have multiple comorbid conditions and low serum albumin levels. Over-hydration is associated with high blood pressure and arterial stiffness, and may contribute to the excessive risk of cardiovascular disease in this group of patients.
[Show abstract][Hide abstract] ABSTRACT: Relapsing and recurrent peritonitis episodes are important causes of treatment failure in patients undergoing peritoneal dialysis (PD). This study explored whether the level of bacteria-derived DNA fragment in PD effluent predicts the development of relapsing or recurrent peritonitis.
The study included 143 patients with PD peritonitis in a dialysis unit between September 2010 and December 2011. Every 5 days until antibiotic treatment ended, PD effluent was collected to determine bacteria-derived DNA fragment level, which is represented by the number of PCR cycles at which bacterial DNA could be detected. Patients were followed for the development of relapsing or recurrent peritonitis.
Thirty-nine patients were excluded because of immediate treatment failure or incorrect diagnosis. Of the other 104 patients, 15 (14.4%) developed relapsing peritonitis, 3 (2.9%) had recurrent peritonitis, and 5 (4.8%) had repeat episodes. Patients with relapsing or recurrent peritonitis episodes had significantly higher levels of bacterial DNA fragment in PD effluent than those without relapsing or recurrence, both 5 days before (31.9±3.4 versus 34.3±3.0 cycles; P=0.002) and on the day of (32.3±2.6 versus 34.1±1.7 cycles; P<0.001) completion of antibiotics. When bacterial DNA fragment detectable by 34 PCR cycles 5 days before the completion of antibiotics is used as the cutoff, it has a sensitivity of 88.9% and specificity of 60.5% for the prediction of relapsing or recurrent peritonitis.
Bacterial DNA fragment levels in PD effluent are significantly higher, both 5 days before and on the date of completion of antibiotics, among patients who subsequently develop relapsing or recurrent peritonitis than among those cured by antibiotics. Further studies are needed to validate these results and confirm the clinical utility of dialysate bacterial DNA fragment level.
Clinical Journal of the American Society of Nephrology 10/2013; 8(11). DOI:10.2215/CJN.02360213 · 4.61 Impact Factor