The inverse association of glomerular function and urinary Β2-MG excretion and its implications for cadmium health risk assessment
© 2019 Urinary β2-microgroblin (β2-MG) excretion levels above 300 μg/g creatinine are used to indicate defective tubular reabsorption. Arguably, increased urinary β2-MG excretion could also reflect glomerular filtration rate decline. Thus, we investigated an association between urinary β2-MG and es...
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th-cmuir.6653943832-653792019-08-05T04:37:36Z The inverse association of glomerular function and urinary Β2-MG excretion and its implications for cadmium health risk assessment Soisungwan Satarug David A. Vesey Muneko Nishijo Werawan Ruangyuttikarn Glenda C. Gobe Biochemistry, Genetics and Molecular Biology Environmental Science © 2019 Urinary β2-microgroblin (β2-MG) excretion levels above 300 μg/g creatinine are used to indicate defective tubular reabsorption. Arguably, increased urinary β2-MG excretion could also reflect glomerular filtration rate decline. Thus, we investigated an association between urinary β2-MG and estimated glomerular filtration rate (eGFR). We studied 527 subjects, aged 30–87 years (mean 51.2), who lived in a rural area of Thailand polluted with cadmium (Cd). Of this cohort, 10.3% had urinary Cd levels <2 μg/g creatinine and 53.5% had urinary Cd levels ≥5 μg/g creatinine. Half (53.1%) of the participants had urinary β2-MG levels ≥ 300 μg/g creatinine, and 11.6% had low GFR, defined as eGFR <60 mL/min/1.73 m 2 . Lower eGFR values were associated with older age (β = −0.568, P < 0.001), higher urinary β2-MG (β = −0.170, P < 0.001), higher urinary Cd (β = −0.103, P = 0.005) and diabetes (β = 0.074, P = 0.032). An inverse association between eGFR and urinary β2-MG was evident in subjects with low GFR (β = −0.332, P = 0.033), but not in those with GFR >90 mL/min/1.73 m 2 (β = −0.008, P = 0.896). These findings suggested Cd-induced nephron loss and reduced tubular reabsorption in low eGFR subjects. Urinary β2-MG levels <300 μg/g creatinine were associated with 4.66 (95% CI: 1.92, 11.32) fold increase in the POR for low GFR, compared with urinary β2-MG levels <100 μg/g creatinine. Findings in the present study cast doubt on a cut-off value for urinary β2-MG, while lending support to the notion that elevated urinary β2-MG excretion could indicate a fall of GFR. 2019-08-05T04:32:22Z 2019-08-05T04:32:22Z 2019-06-01 Journal 10960953 00139351 2-s2.0-85062997942 10.1016/j.envres.2019.03.026 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85062997942&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/65379 |
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Biochemistry, Genetics and Molecular Biology Environmental Science Soisungwan Satarug David A. Vesey Muneko Nishijo Werawan Ruangyuttikarn Glenda C. Gobe The inverse association of glomerular function and urinary Β2-MG excretion and its implications for cadmium health risk assessment |
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© 2019 Urinary β2-microgroblin (β2-MG) excretion levels above 300 μg/g creatinine are used to indicate defective tubular reabsorption. Arguably, increased urinary β2-MG excretion could also reflect glomerular filtration rate decline. Thus, we investigated an association between urinary β2-MG and estimated glomerular filtration rate (eGFR). We studied 527 subjects, aged 30–87 years (mean 51.2), who lived in a rural area of Thailand polluted with cadmium (Cd). Of this cohort, 10.3% had urinary Cd levels <2 μg/g creatinine and 53.5% had urinary Cd levels ≥5 μg/g creatinine. Half (53.1%) of the participants had urinary β2-MG levels ≥ 300 μg/g creatinine, and 11.6% had low GFR, defined as eGFR <60 mL/min/1.73 m 2 . Lower eGFR values were associated with older age (β = −0.568, P < 0.001), higher urinary β2-MG (β = −0.170, P < 0.001), higher urinary Cd (β = −0.103, P = 0.005) and diabetes (β = 0.074, P = 0.032). An inverse association between eGFR and urinary β2-MG was evident in subjects with low GFR (β = −0.332, P = 0.033), but not in those with GFR >90 mL/min/1.73 m 2 (β = −0.008, P = 0.896). These findings suggested Cd-induced nephron loss and reduced tubular reabsorption in low eGFR subjects. Urinary β2-MG levels <300 μg/g creatinine were associated with 4.66 (95% CI: 1.92, 11.32) fold increase in the POR for low GFR, compared with urinary β2-MG levels <100 μg/g creatinine. Findings in the present study cast doubt on a cut-off value for urinary β2-MG, while lending support to the notion that elevated urinary β2-MG excretion could indicate a fall of GFR. |
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Journal |
author |
Soisungwan Satarug David A. Vesey Muneko Nishijo Werawan Ruangyuttikarn Glenda C. Gobe |
author_facet |
Soisungwan Satarug David A. Vesey Muneko Nishijo Werawan Ruangyuttikarn Glenda C. Gobe |
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Soisungwan Satarug |
title |
The inverse association of glomerular function and urinary Β2-MG excretion and its implications for cadmium health risk assessment |
title_short |
The inverse association of glomerular function and urinary Β2-MG excretion and its implications for cadmium health risk assessment |
title_full |
The inverse association of glomerular function and urinary Β2-MG excretion and its implications for cadmium health risk assessment |
title_fullStr |
The inverse association of glomerular function and urinary Β2-MG excretion and its implications for cadmium health risk assessment |
title_full_unstemmed |
The inverse association of glomerular function and urinary Β2-MG excretion and its implications for cadmium health risk assessment |
title_sort |
inverse association of glomerular function and urinary β2-mg excretion and its implications for cadmium health risk assessment |
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2019 |
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https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85062997942&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/65379 |
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