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Kishimoto K, Hasegawa D, Uemura S, Nakamura S, Kozaki A, Saito A, Ishida T, Mori T, Kosaka Y. Association between muscle mass evaluated by computed tomography and the serum creatinine-cystatin C ratio in children with cancer: A cross-sectional study. Nutrition 2022; 99-100:111679. [DOI: 10.1016/j.nut.2022.111679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 03/04/2022] [Accepted: 03/31/2022] [Indexed: 10/18/2022]
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Mikulic V, Rogic D, Mikulic I, Jerkovic Raguz M, Brzica J, Pandza Topic M, Ljubić K, Tomic V. Cystatin C Concentration During the First Three Postnatal Days in Healthy Term Newborns. Z Geburtshilfe Neonatol 2022; 226:193-196. [PMID: 35081646 DOI: 10.1055/a-1727-6309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
OBJECTIVE Cystatin C (Cys-C) concentration has not been examined sufficiently among healthy newborn population, particularly in terms of reference values. This study aimed to establish gender-, postnatal age- and birth weight-specific Cys-C concentration for healthy term newborns. Its objective was also to examine if there were any differences between our measured concentration and the reference interval established by the CALIPER study. METHODS Serum samples from a total of 90 healthy term newborns were used to determine Cys-C concentration. Cys-C was measured within first three days of birth using particle-enhanced turbidimetric immunoassay (PETIA) on the Architect plus ci8200 analyzer. RESULTS Median concentration of the Cys-C was 2.05 mg/L. There were no statistically significant differences in Cys-C concentration regarding gender (p=0.779), birth weight (p=0.505), postnatal age (p=0.512) or Apgar score (p=0.799). The value of the 2.5th and 97.5th percentile for Cys-C concentrations for girls was 0.93-3.15 mg/L and for boys it was 1.5-3.36 mg/L. CONCLUSION Cys-C concentration in healthy term newborns does not depend on gender, birth weight, postnatal age, or Apgar score. Our measured concentration range of CyS-C in healthy newborns turned out to be slightly wider than the interval determined in the CALIPER study.
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Affiliation(s)
- Vinka Mikulic
- Department of Laboratory Diagnostics, University Clinical Hospital Mostar, Mostar, Bosnia and Herzegovina.,Clinical Biochemistry, University of Mostar, School of Medicine, Mostar, Bosnia and Herzegovina
| | - Dunja Rogic
- Department of Laboratory Diagnostics, University Hospital Center Zagreb, Zagreb, Croatia.,Department of Medical Biochemistry and Hematology, University of Zagreb Faculty of Pharmacy and Biochemistry, Zagreb, Croatia
| | - Ivanka Mikulic
- Department of Laboratory Diagnostics, University Clinical Hospital Mostar, Mostar, Bosnia and Herzegovina.,Clinical Biochemistry, University of Mostar, School of Medicine, Mostar, Bosnia and Herzegovina
| | - Marjana Jerkovic Raguz
- Department of Pediatrics, University of Mostar, School of Medicine, Mostra, Bosnia and Herzegovina.,Department of Neonatology and Intensive Care Unit, University Clinical Hospital Mostar, Mostar, Bosnia and Herzegovina
| | - Jerko Brzica
- Department of Pediatrics, University of Mostar, School of Medicine, Mostra, Bosnia and Herzegovina.,Department of Neonatology and Intensive Care Unit, University Clinical Hospital Mostar, Mostar, Bosnia and Herzegovina
| | - Maja Pandza Topic
- Department of Psychology, University of Mostar Faculty of Philosophy, Mostar, Bosnia and Herzegovina
| | - Kristina Ljubić
- Department of Laboratory Diagnostics, University Clinical Hospital Mostar, Mostar, Bosnia and Herzegovina.,Clinical Biochemistry, University of Mostar, School of Medicine, Mostar, Bosnia and Herzegovina
| | - Vajdana Tomic
- Department of Obstetrics and Gynaecology, University Clinical Hospital Mostar, Mostar, Bosnia and Herzegovina.,Department of Gynaecology, University of Mostar School of Medicine, Mostar, Bosnia and Herzegovina
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Ziegelasch N, Vogel M, Körner A, Koch E, Jurkutat A, Ceglarek U, Dittrich K, Kiess W. Cystatin C relates to metabolism in healthy, pubertal adolescents. Pediatr Nephrol 2022; 37:423-432. [PMID: 34432142 PMCID: PMC8816513 DOI: 10.1007/s00467-021-05209-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 06/05/2021] [Accepted: 06/28/2021] [Indexed: 11/30/2022]
Abstract
INTRODUCTION The cystatin C (CysC) serum level is a marker of glomerular filtration rate and depends on age, gender, and pubertal stage. We hypothesize that CysC might overall reflect energy homeostasis and be regulated by components of the endocrine system and metabolites in pubertal adolescents. METHODS Serum CysC levels and further possible effector parameters in 5355 fasting, morning venous blood samples from 2035 healthy participants of the LIFE Child cohort study (age 8 to 18 years) were analyzed. Recruitment started in 2011, with probands followed up once a year. Linear univariate and stepwise multivariate regression analyses were performed. RESULTS Annual growth rate, serum levels of thyroid hormones, parathyroid hormone, insulin-like growth factor 1, hemoglobin A1c (HbA1c), uric acid, and alkaline phosphatase show relevant and significant associations with CysC serum concentrations (p <0.001). Furthermore, male probands' CysC correlated with the body mass index and testosterone among other sexual hormones. Multivariate analyses revealed that uric acid and HbA1c are associated variables of CysC independent from gender (p <0.001). In males, alkaline phosphatase (p <0.001) is additionally significantly associated with CysC. Thyroid hormones show significant correlations only in multivariate analyses in females (p <0.001). CONCLUSIONS The described associations strongly suggest an impact of children's metabolism on CysC serum levels. These alterations need to be considered in kidney diagnostics using CysC in adolescents. Additionally, further studies are needed on CysC in children.
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Affiliation(s)
- Niels Ziegelasch
- Hospital for Children and Adolescents, University of Leipzig, Liebigstraße 27b, 04103, Leipzig, Germany.
| | - Mandy Vogel
- Hospital for Children and Adolescents, University of Leipzig, Liebigstraße 27b, 04103 Leipzig, Germany ,LIFE Leipzig Research Centre for Civilization Diseases, University of Leipzig, Philipp-Rosenthalstrasse 27, 04103 Leipzig, Germany
| | - Antje Körner
- Hospital for Children and Adolescents, University of Leipzig, Liebigstraße 27b, 04103 Leipzig, Germany ,Centre of Paediatric Research (CPL), University of Leipzig, 04103 Leipzig, Germany
| | - Eva Koch
- LIFE Leipzig Research Centre for Civilization Diseases, University of Leipzig, Philipp-Rosenthalstrasse 27, 04103 Leipzig, Germany
| | - Anne Jurkutat
- LIFE Leipzig Research Centre for Civilization Diseases, University of Leipzig, Philipp-Rosenthalstrasse 27, 04103 Leipzig, Germany
| | - Uta Ceglarek
- Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostic (ILM), University Hospital Leipzig, 04103 Leipzig, Germany
| | - Katalin Dittrich
- Hospital for Children and Adolescents, University of Leipzig, Liebigstraße 27b, 04103 Leipzig, Germany ,Centre of Paediatric Research (CPL), University of Leipzig, 04103 Leipzig, Germany ,Present Address: DSO, Walter-Koehn-Str. 1a, Organisationszentrale, D-04356 Leipzig, Germany
| | - Wieland Kiess
- Hospital for Children and Adolescents, University of Leipzig, Liebigstraße 27b, 04103 Leipzig, Germany ,LIFE Leipzig Research Centre for Civilization Diseases, University of Leipzig, Philipp-Rosenthalstrasse 27, 04103 Leipzig, Germany ,Centre of Paediatric Research (CPL), University of Leipzig, 04103 Leipzig, Germany
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Okuda Y, Hamada R, Uemura O, Sakai T, Sawai T, Harada R, Hamasaki Y, Ishikura K, Hataya H, Honda M. Mean of creatinine clearance and urea clearance examined over 1 h estimates glomerular filtration rate accurately and precisely in children. Nephrology (Carlton) 2021; 26:763-771. [PMID: 34091977 DOI: 10.1111/nep.13911] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 05/25/2021] [Accepted: 05/30/2021] [Indexed: 11/27/2022]
Abstract
AIM Accurate and precise estimation of glomerular filtration rate (GFR) is essential in kidney disease. We evaluated the usefulness of the mean of creatinine clearance (CCr ) and urea clearance (CUN ) examined over a 1-h urine collection period (1-h (CCr + CUN )/2) in a retrospective, cross-sectional study across two centres, as a relatively simple method for estimating GFR in children. METHODS Children aged ≤18 years who underwent inulin clearance (CIn ) tests were eligible. Two clearance values were obtained during a 2-h test consisting of two periods of 1 h each. The mean clearance in two periods was defined as 1-h clearance. 1-h (CCr + CUN )/2, 1-h CCr , 1-h CUN and GFR estimated by Cr-based and cystatin C (CysC)-based formulas for Japanese children were compared with CIn . Bland-Altman plots were used to evaluate correlations. The primary outcome measure was the correlation between 1-h (CCr + CUN )/2 and CIn . RESULTS Fifty-three children were analysed. Their median age was 10.9 (interquartile range [IQR] 5.3-14.2) years, and median CIn and 1-h (CCr + CUN )/2 were 77.0 (IQR: 51.5-95.1) and 81.0 (IQR: 64.1-97.7) ml/min/1.73 m2 , respectively. Percentage difference of CIn and 1-h (CCr + CUN )/2 in the Bland-Altman plot was -11.2% (95% confidence interval - 15.3% - -7.1%), with 95% lower and upper limits of agreement of -40.3% and 18.0%, respectively. Thus, 1-h (CCr + CUN )/2 was 1.12 times CIn . CONCLUSION 1 h (CCr + CUN )/2 was almost concordant with CIn . 1-h (CCr + CUN )/2 can estimate GFR accurately and precisely, making it a simple and speedy test for use in clinical practice.
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Affiliation(s)
- Yusuke Okuda
- Department of Pediatrics, Shiga University of Medical Science, Shiga, Japan.,Department of Pediatrics, Kitasato University School of Medicine, Kanagawa, Japan.,Department of Nephrology, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Riku Hamada
- Department of Nephrology, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Osamu Uemura
- Department of Pediatrics, Ichinomiya Medical Treatment & Habilitation Center, Aichi, Japan
| | - Tomoyuki Sakai
- Department of Pediatrics, Shiga University of Medical Science, Shiga, Japan
| | - Toshihiro Sawai
- Department of Pediatrics, Shiga University of Medical Science, Shiga, Japan
| | - Ryoko Harada
- Department of Nephrology, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Yuko Hamasaki
- Department of Nephrology, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan.,Department of Nephrology, Toho University Faculty of Medicine, Tokyo, Japan
| | - Kenji Ishikura
- Department of Pediatrics, Kitasato University School of Medicine, Kanagawa, Japan.,Department of Nephrology, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Hiroshi Hataya
- Department of Nephrology, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Masataka Honda
- Department of Nephrology, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
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Age-wise trends in alkaline phosphatase activity in 167,625 Chinese children aged 0-18 years. Clin Biochem 2020; 79:34-40. [PMID: 32142736 DOI: 10.1016/j.clinbiochem.2020.03.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 02/26/2020] [Accepted: 03/01/2020] [Indexed: 12/25/2022]
Abstract
OBJECTIVE Alkaline phosphatase (ALP) serves as a biomarker for diagnosing several types of diseases in adults; nonetheless, its use is restricted in children because of changes in ALP activity during different physiological phases. The present study aimed to investigate ALP activity and its dynamics in children of different ages to establish the reference values for ALP activity in children. METHODS Total 167,625 samples of children aged 0-18 years were enrolled in this study. ALP activity was measured using the 4-nitrophenyl-1-phosphate disodium salt (4-NPP)-2-amino-2-methyl-1-propanol (AMP) method with an automatic biochemical analyzer. Patients with known diagnoses that may affect ALP activity were excluded. A percentile curve was plotted using MATLAB software, and the curve was fitted using the skewness-median-coefficient of variation (LMS) method. RESULTS ALP activity reached the highest peak at 12-13 years of age and then gradually decreased to the lowest peak at 18-19 years of age in boys, whereas it reached the highest at 10-11 years and then gradually reduced to the lowest at 17-18 years in girls. Furthermore, the highest peak of ALP activity appeared substantially earlier in children of either sex in China than in those in Germany. CONCLUSIONS We showed the dynamics of ALP activity in both boys and girls between the ages of 0 and 18 years in China and compared the difference in ALP activity between children in China and Germany. Our findings provide a reference for clinicians.
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Motoki T, Shimizu-Motohashi Y, Saito I, Komaki H, Ishiyama A, Aibara K, Jogamoto T, Tezuka Y, Kawabe M, Makino A, Nagatani K, Tatara K, Kuwabara K, Kikuchi C, Fukuda M, Ishii E, Eguchi M. Renal dysfunction can occur in advanced-stage Duchenne muscular dystrophy. Muscle Nerve 2019; 61:192-197. [PMID: 31725904 DOI: 10.1002/mus.26757] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 11/08/2019] [Accepted: 11/12/2019] [Indexed: 11/10/2022]
Abstract
INTRODUCTION With improved treatments, patients with Duchenne muscular dystrophy (DMD) can survive far beyond adolescence. However, advanced-stage DMD patients are at risk of developing renal dysfunction. In this study, long-term renal function outcomes and associated risk factors in advanced stage DMD were analyzed. METHODS Fifty-one patients were classified into three different age groups (<20, 20-29, and ≥30 years of age), and cystatin C (CysC) levels were compared among groups. RESULTS Median serum CysC levels were 0.74 mg/L, 0.63 mg/L, and 0.76 mg/L in the age groups of <20, 20-29, and ≥30 years, respectively (P = .003). Five of the nine patients in the ≥30 years age group showed elevated serum CysC and decreased cardiac function compared with the other four in the group (P = .014). DISCUSSION Our results indicate an association between cardiac and renal dysfunction in patients with advanced-stage DMD.
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Affiliation(s)
- Takahiro Motoki
- Department of Pediatrics, Ehime University Graduate School of Medicine, Toon, Ehime, Japan
| | - Yuko Shimizu-Motohashi
- Department of Child Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - Isao Saito
- Department of Public Health and Epidemiology, Faculty of Medicine, Oita University, Yufu, Oita, Japan
| | - Hirofumi Komaki
- Translational Medical Center, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - Akihiko Ishiyama
- Department of Child Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - Kaori Aibara
- Department of Pediatrics, Ehime University Graduate School of Medicine, Toon, Ehime, Japan
| | - Toshihiro Jogamoto
- Department of Pediatrics, Ehime University Graduate School of Medicine, Toon, Ehime, Japan
| | - Yuko Tezuka
- Division of Pediatrics, Ehime Prefectural Niihama Hospital, Niihama, Ehime, Japan
| | - Mika Kawabe
- Ehime Rehabilitation Center for Children, Toon, Ehime, Japan
| | - Akira Makino
- Division of Pediatrics, Ehime Prefectural Niihama Hospital, Niihama, Ehime, Japan
| | - Koji Nagatani
- Division of Pediatrics, Uwajima City Hospital, Uwajima, Ehime, Japan
| | - Katsunori Tatara
- Division of Child Neurology, Shikoku Medical Center for Children and Adults, Zentsuji, Kagawa, Japan
| | - Kozue Kuwabara
- Division of Pediatrics, Ehime Prefectural Central Hospital, Matsuyama, Ehime, Japan
| | - Chiya Kikuchi
- Division of Pediatrics, National Hospital Organization Ehime Medical Center, Toon, Ehime, Japan
| | - Mitsumasa Fukuda
- Division of Pediatric Neurology, Tokyo Metropolitan Neurological Hospital, Fuchu, Tokyo, Japan
| | - Eiichi Ishii
- Department of Pediatrics, Ehime University Graduate School of Medicine, Toon, Ehime, Japan
| | - Mariko Eguchi
- Department of Pediatrics, Ehime University Graduate School of Medicine, Toon, Ehime, Japan
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Validation of standardized creatinine and cystatin C GFR estimating equations in a large multicentre European cohort of children. Pediatr Nephrol 2019; 34:1087-1098. [PMID: 30715595 DOI: 10.1007/s00467-018-4185-y] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Revised: 12/08/2018] [Accepted: 12/18/2018] [Indexed: 01/08/2023]
Abstract
BACKGROUND Most validations of paediatric glomerular filtration rate (GFR) estimating equations using standardized creatinine (CR) and cystatin C (CYS) assays have comprised relatively small cohorts, which makes accuracy across subgroups of GFR, age, body mass index (BMI) and gender uncertain. To overcome this, a large cohort of children referred for GFR determination has been established from several European medical centres. METHODS Three thousand four hundred eight measurements of GFR (mGFR) using plasma clearance of exogenous substances were performed in 2218 children aged 2-17 years. Validated equations included Schwartz-2009CR/2012CR/CYS/CR+CYS, FASCR/CYS/CR+CYS, LMRCR, Schwartz-LyonCR, BergCYS, CAPACYS, CKD-EPICYS, AndersenCR+CYS and arithmetic means of the best single-marker equations in explorative analysis. Five metrics were used to compare the performance of the GFR equations: bias, precision and three accuracy measures including the percentage of GFR estimates (eGFR) within ± 10% (P10) and ± 30% (P30) of mGFR. RESULTS Three of the cystatin C equations, BergCYS, CAPACYS and CKD-EPICYS, exhibited low bias and generally satisfactory accuracy across all levels of mGFR; CKD-EPICYS had more stable performance across gender than the two other equations. Among creatinine equations, Schwartz-LyonCR had the best performance but was inaccurate at mGFR < 30 mL/min/1.73 m2 and in underweight patients. Arithmetic means of the best creatinine and cystatin C equations above improved bias compared to the existing composite creatinine+cystatin C equations. CONCLUSIONS The present study strongly suggests that cystatin C should be the primary biomarker of choice when estimating GFR in children with decreased GFR. Arithmetic means of well-performing single-marker equations improve accuracy further at most mGFR levels and have practical advantages compared to composite equations.
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Ziegelasch N, Vogel M, Müller E, Tremel N, Jurkutat A, Löffler M, Terliesner N, Thiery J, Willenberg A, Kiess W, Dittrich K. Cystatin C serum levels in healthy children are related to age, gender, and pubertal stage. Pediatr Nephrol 2019; 34:449-457. [PMID: 30460495 PMCID: PMC6349798 DOI: 10.1007/s00467-018-4087-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 08/05/2018] [Accepted: 09/12/2018] [Indexed: 12/18/2022]
Abstract
BACKGROUND This study aims to establish age- and gender-specific cystatin C (CysC) reference values for healthy infants, children, and adolescents and to relate them to pubertal stage, height, weight, and body mass index (BMI). METHODS Serum CysC and creatinine levels of 6217 fasting, morning venous blood samples from 2803 healthy participants of the LIFE Child study (age 3 months to 18 years) were analyzed by an immunoassay. Recruitment started in 2011; 1636 participants provided at least one follow-up measurement. Percentiles for CysC were calculated. Age- and gender-related effects of height, weight, BMI, and puberty status were assessed through linear regression models. RESULTS Over the first 2 years of life, median CysC levels decrease depending on height (ß = - 0.010 mg/l/cm, p < 0.001) and weight (ß = - 0.033 mg/l/kg, p < 0.001) from 1.06 to 0.88 mg/l for males and from 1.04 to 0.87 mg/l for females. Following the second year of age, the levels remain stable for eight years. From 11 to 14 years of age, there is an increase of median CysC levels in males to 0.98 mg/l and a decrease in females to 0.86 mg/l. The change is associated with puberty (ß = 0.105 mg/l/Tanner stage, p < 0.001 in males and ß = - 0.093 mg/l/Tanner stage, p < 0.01 in females) and in males with height (ß = 0.003 mg/l/cm, p < 0.001). CONCLUSIONS CysC levels depend on age, gender, and height, especially during infancy and puberty. We recommend the use of age- and gender-specific reference values for CysC serum levels for estimating kidney function in clinical practice.
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Affiliation(s)
- Niels Ziegelasch
- LIFE Leipzig Research Center for Civilization Diseases, University of Leipzig, Philipp-Rosenthal-Strasse 27, 04103, Leipzig, Germany
| | - Mandy Vogel
- LIFE Leipzig Research Center for Civilization Diseases, University of Leipzig, Philipp-Rosenthal-Strasse 27, 04103, Leipzig, Germany.,Center of Paediatric Research (CPL), University of Leipzig, 04103, Leipzig, Germany
| | - Eva Müller
- LIFE Leipzig Research Center for Civilization Diseases, University of Leipzig, Philipp-Rosenthal-Strasse 27, 04103, Leipzig, Germany
| | - Nadin Tremel
- LIFE Leipzig Research Center for Civilization Diseases, University of Leipzig, Philipp-Rosenthal-Strasse 27, 04103, Leipzig, Germany
| | - Anne Jurkutat
- LIFE Leipzig Research Center for Civilization Diseases, University of Leipzig, Philipp-Rosenthal-Strasse 27, 04103, Leipzig, Germany
| | - Markus Löffler
- Institute for Medical Informatics, Statistics and Epidemiology (IMISE), University of Leipzig, 04107, Leipzig, Germany
| | - Nicolas Terliesner
- Hospital for Children and Adolescents, University of Leipzig, Liebigstraße 20a, 04103, Leipzig, Germany
| | - Joachim Thiery
- Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics (ILM), University Hospital Leipzig, 04103, Leipzig, Germany
| | - Anja Willenberg
- Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics (ILM), University Hospital Leipzig, 04103, Leipzig, Germany
| | - Wieland Kiess
- LIFE Leipzig Research Center for Civilization Diseases, University of Leipzig, Philipp-Rosenthal-Strasse 27, 04103, Leipzig, Germany.,Center of Paediatric Research (CPL), University of Leipzig, 04103, Leipzig, Germany.,Hospital for Children and Adolescents, University of Leipzig, Liebigstraße 20a, 04103, Leipzig, Germany
| | - Katalin Dittrich
- Center of Paediatric Research (CPL), University of Leipzig, 04103, Leipzig, Germany. .,Hospital for Children and Adolescents, University of Leipzig, Liebigstraße 20a, 04103, Leipzig, Germany.
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Ibrahim OR, Soladoye AO, Adedoyin TO, Mokuolu OA, Abdulkadir MB, Biliaminu SA. Determination of glomerular filtration rate using cystatin C in healthy Nigerian newborns. ALEXANDRIA JOURNAL OF MEDICINE 2019. [DOI: 10.1080/20905068.2019.1686592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Affiliation(s)
| | | | - Timothy Olanrewaju Adedoyin
- Department of Pediatric and Child Health, University of Ilorin and University of Ilorin Teaching Hospital, Ilorin, Kwara State, Nigeria
| | - Olugbenga Ayodeji Mokuolu
- Department of Pediatric and Child Health, University of Ilorin and University of Ilorin Teaching Hospital, Ilorin, Kwara State, Nigeria
| | - Mohammed Baba Abdulkadir
- Department of Pediatric and Child Health, University of Ilorin and University of Ilorin Teaching Hospital, Ilorin, Kwara State, Nigeria
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Yasui T, Suzuki T, Hara F, Watanabe S, Uga N, Naoe A, Kondo Y. Tailored Predictive Formulas for Glomerular Filtration Rate for Early Detection of Deteriorating Renal Function After Pediatric Living-Donor Liver Transplant. EXP CLIN TRANSPLANT 2018. [PMID: 29534656 DOI: 10.6002/ect.2017.0159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVES In pediatric patients, renal dysfunction after living-donor liver transplant is a major issue that is difficult to evaluate. Recently, predictive equations for Japanese children have been introduced. MATERIALS AND METHODS We conducted a retrospective study by prospectively collecting data on 26 patients under 16 years old who underwent living-donor liver transplant between June 2004 and March 2015. Serum creatinine and cystatin C levels were measured. Paired t tests and Bland-Altman plots were used to compare the following formulas for estimated glomerular filtration rate: the Schwartz formula and 3 formulas that were matched with Japanese children (polynomial, simple, and cystatin C formulas). RESULTS Average estimated glomerular filtrations rates (in mL/min/1.73 m2) were 143.46, 122.90, 121.58, and 123.31 using the Schwartz, polynomial, simple, and cystatin C formulas, respectively. The estimated glomerular filtrations rate for biliary atresia was 141.53 ± 31.37 versus 109.95 ± 19.52 for other diseases, with significant differences only noted with the cystatin C formula. The formulas tailored for Japanese children showed significantly lower estimated glomerular filtrations rates than those obtained using the Schwartz formula (P < .01). CONCLUSIONS The use of formulas for measuring estimated glomerular filtrations rates that are based on race may allow early detection of deteriorating renal function.
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Affiliation(s)
- Toshihiro Yasui
- From the Department of Pediatric Surgery, Fujita Health University, Toyoake, Aichi,Japan
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Nakashima T, Inoue H, Fujiyoshi J, Matsumoto N. Longitudinal analysis of serum cystatin C for estimating the glomerular filtration rate in preterm infants. Pediatr Nephrol 2016; 31:983-9. [PMID: 26809806 DOI: 10.1007/s00467-015-3309-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 12/28/2015] [Accepted: 12/28/2015] [Indexed: 11/29/2022]
Abstract
BACKGROUND Cystatin C (Cys-C) is a more sensitive marker of renal function than creatinine (Cre) in pediatric and adult populations. However, the reference values of serum Cys-C for estimating glomerular filtration rates (eGFRs) in premature infants during the first year of life have not been sufficiently studied. METHODS In this prospective study, 481 blood samples were collected from 261 preterm infants with uncomplicated clinical courses during their first year of life. Infants were divided into three groups according to gestational age at birth: 27-30 weeks, 31-33 weeks, and 34-36 weeks. Serum Cys-C and Cre levels were measured at 6-30 days, 3-5 months, 7-9 months, and 12-14 months after birth and the eGFR was calculated using two previously published equations. RESULTS The median serum Cys-C levels were 1.776, 1.248, 1.037, and 0.960 mg/L at the first, second, third, and fourth measurement time-point, respectively, with the value significantly decreasing with age up to 12-14 months. Cys-C levels were independent of gestational age and gender. In contrast to Cys-C, serum Cre values declined rapidly up to 3-5 months, then remained constant up to 12-14 months. Using the Cys-C-based equation, the eGFR significantly increased with increasing age until approximately 1 year after birth; however, no such trend was noted using the equation based on Cys-C + Cre. CONCLUSIONS Reference ranges for Cys-C in premature infants decline gradually over the first year after birth. Cys-C appears to be a more reliable marker than Cre for estimating GFR in preterm infants.
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Affiliation(s)
- Toshinori Nakashima
- Department of Pediatrics, Kitakyushu Municipal Medical Center, Fukuoka, Japan. .,Department of Pediatrics, National Hospital Organization Kokura Medical Center, 10-1 Harugaoka, Kokuraminami-ku, Kiakyushu-shi, Fukuoka, Japan.
| | - Hirosuke Inoue
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Junko Fujiyoshi
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Naoko Matsumoto
- Department of Pediatrics, Kitakyushu Municipal Medical Center, Fukuoka, Japan
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Mean and standard deviation of reference glomerular filtration rate values in Japanese children. Clin Exp Nephrol 2015; 20:317-8. [DOI: 10.1007/s10157-015-1151-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Accepted: 07/23/2015] [Indexed: 11/25/2022]
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Uemura O, Nagai T, Ishikura K, Ito S, Hataya H, Gotoh Y, Fujita N, Akioka Y, Kaneko T, Honda M. Reference glomerular filtration rate levels in Japanese children: using the creatinine and cystatin C based estimated glomerular filtration rate. Clin Exp Nephrol 2014; 19:683-7. [DOI: 10.1007/s10157-014-1042-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Accepted: 10/05/2014] [Indexed: 10/24/2022]
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Uemura O, Nagai T, Ishikura K, Ito S, Hataya H, Gotoh Y, Fujita N, Akioka Y, Kaneko T, Honda M. Cystatin C-based equation for estimating glomerular filtration rate in Japanese children and adolescents. Clin Exp Nephrol 2013; 18:718-25. [PMID: 24253614 DOI: 10.1007/s10157-013-0910-9] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Accepted: 10/31/2013] [Indexed: 11/26/2022]
Abstract
BACKGROUND Renal inulin clearance is the gold standard for evaluation of kidney function, but is compromised by problems of collecting urine samples in children, especially those <6 years or with a bladder dysfunction. Therefore, we should utilize the serum cystatin C (cysC)-based estimated glomerular filtration rate (eGFR) for measuring serum cysC. The purpose of the present study is to determine the applicability of the new serum cysC-based eGFR in Japanese children and adolescents, including infants with chronic kidney disease (CKD), for evaluation of renal function. METHODS Inulin clearance and standardized serum cysC level determined by the colloidal gold immunoassay were measured in 135 pediatric CKD patients between the ages of 1 month and 18 years with no underlying disease that affects renal function except CKD, to determine serum cysC-based eGFR in Japanese children and adolescents. RESULTS We showed the inulin clearance by expression of 1/serum cysC in pediatric CKD patients, which resulted in the equation: inulin GFR (mL/min/1.73 m(2)) = 104.1 × 1/serum cysC (mg/L) - 7.80. We also validated the cysC-based eGFR formula for Japanese adults. eGFR values obtained with the adult formula significantly underestimated GFR by approximately 8 % in children with CKD. CONCLUSION We determined the new cysC-based eGFR formula is useful for clinical screening of renal function in Japanese children and adolescents, including infants.
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Affiliation(s)
- Osamu Uemura
- The Japanese Society for Pediatric Nephrology, the Committee of Measures for Pediatric CKD, Tokyo, Japan,
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Uemura O, Nagai T, Ishikura K, Ito S, Hataya H, Gotoh Y, Fujita N, Akioka Y, Kaneko T, Honda M. Cystatin C-based equation for estimating glomerular filtration rate in Japanese children and adolescents. Clin Exp Nephrol 2013. [PMID: 24253614 DOI: 10.1007/s10157-013-910-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Renal inulin clearance is the gold standard for evaluation of kidney function, but is compromised by problems of collecting urine samples in children, especially those <6 years or with a bladder dysfunction. Therefore, we should utilize the serum cystatin C (cysC)-based estimated glomerular filtration rate (eGFR) for measuring serum cysC. The purpose of the present study is to determine the applicability of the new serum cysC-based eGFR in Japanese children and adolescents, including infants with chronic kidney disease (CKD), for evaluation of renal function. METHODS Inulin clearance and standardized serum cysC level determined by the colloidal gold immunoassay were measured in 135 pediatric CKD patients between the ages of 1 month and 18 years with no underlying disease that affects renal function except CKD, to determine serum cysC-based eGFR in Japanese children and adolescents. RESULTS We showed the inulin clearance by expression of 1/serum cysC in pediatric CKD patients, which resulted in the equation: inulin GFR (mL/min/1.73 m(2)) = 104.1 × 1/serum cysC (mg/L) - 7.80. We also validated the cysC-based eGFR formula for Japanese adults. eGFR values obtained with the adult formula significantly underestimated GFR by approximately 8 % in children with CKD. CONCLUSION We determined the new cysC-based eGFR formula is useful for clinical screening of renal function in Japanese children and adolescents, including infants.
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Affiliation(s)
- Osamu Uemura
- The Japanese Society for Pediatric Nephrology, the Committee of Measures for Pediatric CKD, Tokyo, Japan,
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