scholarly journals Lipoprotein (a) levels in those with high molecular weight apo (a) isoforms may remain low in a significant proportion of patients with end-stage renal disease

2003 ◽  
Vol 18 (9) ◽  
pp. 1848-1853 ◽  
Author(s):  
D. S. Parsons
1997 ◽  
Vol 17 (3) ◽  
pp. 236-242 ◽  
Author(s):  
Soon Bae Kim ◽  
Won Seok Yang ◽  
Eun Suk Kang ◽  
Won Ki Min ◽  
Jung Sik Park

Objective To evaluate the distribution pattern of apolipoprotein(a) [Apo(a)] phenotypes in Koreans and the effect of dialysis modality on serum lipoprotein(a) [Lp(a)] concentration according to apo(a) phenotype in patients with end-stage renal disease (ESRO). Design Cross-sectional study. Setting A university hospital. Participants: 153 normal controls, 99 hemodialysis (HO) patients and 82 continuous ambulatory peritoneal dialysis (CAPO) patients. Main Outcome Measures Fasting serum Lp(a), lipids, and apo(a) phenotypes were measured. Results The frequencies of the subjects with apo(a) phenotypes of high-molecular weight only, including S3, S4, or S5 or null type were 95.4% of control, 100% of HO patients, and 95.1% of CAPO patients. The frequent apo(a) phenotypes in Koreans consisted of S4, S4S5, S5, and S5S5 isoforms. Significant difference was found in serum Lp(a) concentration among controls and HO and CAPO patients [median (interquartile range): 0.05 g/L, (0.01 0.19); 0.19g/L, (0.10 0.35); 0.63g/L, (0.28 0.90), p< 0.001]. Lp(a) levels in CAPO patients were significantly higher than in HO patients for all four common apo(a) isoforms found in Korean subjects. CAPO patients had higher total and LOL cholesterol levels, and higher ApoB levels than H O patients. Significant differences were found in serum albumin levels between controls and HO and CAPO patients (44 ± 3 g/L, 40 ± 4 g/L, 32 ± 7 g/L, respectively, p < 0.05). There were significant inverse correlations between serum albumin and Lp(a) (r = -0.33, p < 0.01), total cholesterol (r = -0.31, p < 0.01), LOL (r = -0.39, p < 0.01) or ApoB (r = -0.35, p < 0.01) in ESRO patients. A significant positive correlation was found between serum albumin and ApoA1 (r = 0.24, p < 0.01). Conclusion These findings indicate that Koreans have mainly high -molecular weight apo(a) phenotypes and serum Lp(a) is elevated in CAPO patients compared to HO patients for common apo(a) phenotypes, which may contribute to the frequent cardiovascular mortality in CAPO patients.


2002 ◽  
Vol 13 (suppl 1) ◽  
pp. S41-S47
Author(s):  
William R. Clark ◽  
Dayong Gao

ABSTRACT. Low-molecular-weight proteins (LMWP) are now recognized as a distinct class of uremic toxins, and numerous compounds in this category have been identified. Dr. Henderson has spent much of his career investigating ways to enhance the removal of intermediate- and large-sized uremic retention molecules. As LMWP clearly fall under this category, it is fitting to provide a review of several aspects of this molecular class. Normal renal metabolism of LMWP is discussed along with the changes that occur during chronic renal insufficiency. The effect of end-stage renal disease on plasma LMWP concentrations is assessed. As examples of the potential uremic toxicity of this molecular class, leptin, adrenomedullin, and the compounds associated with increased susceptibility to infection are highlighted. Finally, an overview of LMWP removal mechanisms for both hemodialysis and the convective therapies is provided.


2018 ◽  
Vol 19 (1) ◽  
Author(s):  
Kun Ling Ma ◽  
Tie Kai Gong ◽  
Ze Bo Hu ◽  
Yang Zhang ◽  
Gui Hua Wang ◽  
...  

Blood ◽  
2016 ◽  
Vol 128 (22) ◽  
pp. 1316-1316
Author(s):  
Jonathan Brett Heimlich ◽  
Godwin Chipoka ◽  
Graham Ellis ◽  
Laila Elsherif ◽  
Emeraghi David ◽  
...  

Abstract Sickle cell nephropathy (SCN) is a prevalent complication among adults with sickle cell disease (SCD) and has been observed in younger populations, suggesting potential early renal involvement in pediatric patients. Initial hyperfiltration and albuminuria followed by frank proteinuria, leading to declining GFR and eventual end stage renal disease is assumed to be the typical progression of SCN; however, few clinical biomarkers exist to identify early-stage renal disease. We describe the renal profile in 119 children with SCD at Kamuzu Central Hospital in Lilongwe, Malawi and propose a novel urinary biomarker for the identification of children with early renal disease. Among children with confirmed HbSS disease (females 47.9%; median age 9.0 years, IQR: 5, 11), 21.6% were found to have a urinary albumin to creatinine ratio (UACR) 30mg/g or above. Baseline laboratory and clinical parameters stratified by UACR are shown in Tables 1 and 2. Patients with increased levels of UACR were found to be significantly older, and have significantly elevated plasma levels of lactate dehydrogenase (LDH), total bilirubin, and indirect bilirubin when compared to those without albuminuria (p<0.05). No association was seen between albuminuria and either hemoglobin or plasma hemoglobin. Albuminuria was also significantly associated with elevated levels of nephrin, a urinary marker of glomerular injury (p<0.01). Multivariable logistic regression was used to investigate risk factors that are associated with albuminuria (UACR >= 30). Urine nephrin was significantly associated with albuminuria (regression coefficient estimate: 0.00188, SE: 0.000571, p = 0.0010). Additional analysis using a nephrin cut-point of 293 pg/mL, the median value in the cohort, revealed a 17.8 times greater odds of having albuminuria in children with nephrinuria above this value. These data taken together suggests that a significant proportion of children with SCD in Malawi exhibit renal involvement early in life and could be at risk for worsening nephropathy and end-stage renal disease as they grow older. Our data further indicates that urinary nephrin could be utilized as an early marker of glomerular disease in SCN and possibly prompt earlier intervention in these children. The discordant association of albuminuria with clinical markers of hemolysis suggests that hemolysis may not play a substantial role in the pathogenesis of albuminuria in this population. Increased surveillance of children with SCD for renal complications can ultimately inform management strategies to improve outcomes and increase life expectancy among children with SCD. Disclosures No relevant conflicts of interest to declare.


2001 ◽  
Vol 5 (1) ◽  
pp. 66-69 ◽  
Author(s):  
Christina I. Fytili ◽  
Ploumis S. Passadakis ◽  
Euaggelia G. Progia ◽  
Georgia L. Kambouromiti ◽  
Maria I. Panopoulou ◽  
...  

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