Document Detail


GFR estimated from cystatin C versus creatinine in children born small for gestational age.
MedLine Citation:
PMID:  18455848     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: Low birth weight caused by intrauterine growth restriction may be a risk factor for renal impairment in the adult life. STUDY DESIGN: A cross-sectional study. SETTING & PARTICIPANTS: 71 children aged 8 to 13 years living in the community of São Paulo, Brazil, were included in the study. Gestational age was within the normal range. PREDICTORS: Birth weight (range, 2,052 to 3,560 g) divided into quartiles: 2,500 g or less; 2,501 to 2,740 g; 2,741 to 3,000 g; and greater than 3,000 g. Birth weight ascertained by birth records in 43 and by recall in 28 participants. OUTCOMES & MEASUREMENTS: Cystatin C, creatinine, and glomerular filtration rate (GFR) estimated by equations using cystatin C (eGFR(cys)) or creatinine (eGFR(cr)). RESULTS: Overall, mean serum creatinine level was 0.8 +/- 0.01 (SE) mg/dL (range, 0.7 to 1.1 mg/dL); mean plasma cystatin C level was 0.9 +/- 0.02 mg/L (range, 0.5 to 1.6 mg/L), and eGFR(cr) and eGFR(cys) were 102.4 +/- 2.16 (range, 66 to 140) and 91.8 +/- 2.46 mL/min/1.73 m(2) (range, 49 to 139 mL/min/1.73 m(2)), respectively. No differences were found for serum creatinine or eGFR(cr) values among the birth-weight quartiles. There was a significant linear trend of increasing cystatin C levels (decreasing eGFR(cys)) in the lower birth-weight quartile groups (P = 0.002 and P = 0.02, respectively). Systolic blood pressure correlated with plasma cystatin C level (r = 0.31; P = 0.008) and eGFR(cys) (r = -0.26; P = 0.028). Covariance analysis adjusting for age, sex, body mass index for age compared with standards of the National Center for Health Statistics and expressed as a z score, and systolic blood pressure showed that cystatin C values remained greater in the lowest than highest birth-weight quartile (1.01 +/- 0.05 versus 0.83 +/- 0.05 mg/L; P = 0.02). LIMITATIONS: Ascertainment of birth weight by recall in some participants. Lack of measurement of microalbuminuria, absence of direct GFR measurement, and small sample size. CONCLUSIONS: Lower birth weight is associated with higher levels of cystatin C but not creatinine in 8-13 yr. old children born full-term.
Authors:
Maria C P Franco; Sônia K Nishida; Ricardo Sesso
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-05-02
Journal Detail:
Title:  American journal of kidney diseases : the official journal of the National Kidney Foundation     Volume:  51     ISSN:  1523-6838     ISO Abbreviation:  Am. J. Kidney Dis.     Publication Date:  2008 Jun 
Date Detail:
Created Date:  2008-05-26     Completed Date:  2008-07-29     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  8110075     Medline TA:  Am J Kidney Dis     Country:  United States    
Other Details:
Languages:  eng     Pagination:  925-32     Citation Subset:  IM    
Affiliation:
Department of Medicine, Division of Nephrology, Federal University of São Paulo, São Paulo, Brazil. mdcfranco@nefro.epm.br
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Child
Creatinine / blood*
Cross-Sectional Studies
Cystatin C
Cystatins / blood*
Female
Glomerular Filtration Rate*
Humans
Infant, Newborn
Infant, Small for Gestational Age*
Male
Chemical
Reg. No./Substance:
0/CST3 protein, human; 0/Cystatin C; 0/Cystatins; 60-27-5/Creatinine
Comments/Corrections
Comment In:
Am J Kidney Dis. 2008 Oct;52(4):807; author reply 807-8   [PMID:  18805356 ]

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