评估 DNA 甲基化(5-mC)在检测职业性铅暴露严重程度方面的诊断准确性和临床实用性。

IF 1.5 Q4 BIOCHEMISTRY & MOLECULAR BIOLOGY Indian Journal of Clinical Biochemistry Pub Date : 2024-10-01 Epub Date: 2023-06-12 DOI:10.1007/s12291-023-01138-z
Ravibabu Kalahasthi, Vinay Kumar Adepu, Raju Nagaraju
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引用次数: 0

摘要

本研究调查了 DNA 甲基化(5 甲基胞嘧啶)在铅工业职业性铅暴露中的诊断准确性(DA)和临床实用性(CU)。采用 ICP-OES 方法测量血液铅含量 (BLL)。DNA 总甲基化(5-mC)采用 ELISA 方法进行量化。根据他们的血铅含量,受铅污染的工人被分为三组:低(30 µg/dL)组、中(30 µg/dL)组和高(30 µg/dL)组。与低铅暴露组相比,中度和高度铅暴露组的 DNA 甲基化(5-mC)明显较低。在暴露于高浓度铅的工人中,5-mC 的 DA 变量显示灵敏度为 74.7% [95% CI 65.4-84.0],特异性为 69.6% [95% CI 50.8-88.4],阳性预测值(positive predictive value,阳性预测值)为 0.5%。阳性预测值(PPV)为 89.9% [95% CI 82.7-97.0],阳性似然比(LR+)为 2.454 [95% CI 1.3-4.6],诊断几率比(DOR)为 6.3 [95% CI 6.5-7.7]。在中度铅暴露中,5-mC 的 DA 变量显示灵敏度为 64.9% [95% CI 55.2-74.5],特异性为 69.6% [95% CI 50.8-88.4],PPV 为 89.7% [95% CI 82.5-97.0],LR+ 为 2.132 [95% CI 1.13-4.03],DOR 为 4.2 [95% CI 3.6-5.7]。与中度铅暴露相比,高铅暴露组的 DA 指标更高。在高铅暴露组,5-mC 的临床实用性(CU+)为 0.671 [95% CI 0.566-0.776],良好;在中度铅暴露组,5-mC 的临床实用性为 0.582 [95% CI 0.470-0.694],一般。总之,DNA甲基化(5mC)可作为高铅暴露的预测性生物标志物。
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Assessment of Diagnostic Accuracy and Clinical Utility of DNA Methylation (5-mC) in Detecting Severity of Occupational Lead Exposure.

This study investigated the diagnostic accuracy (DA) and clinical utility (CU) of DNA methylation (5 methylcytosine) in occupational Pb-exposure from Pb based industry. Blood Lead levels (BLLs) were measured using the ICP-OES method. The total DNA methylation (5-mC) was quantified using ELISA method. Based on their BLLs, the Pb-exposed workers were categorised into three groups: low (< 10 µg/dL), moderate (10-30 µg/dL), and high exposure (> 30 µg/dL). DNA methylation (5-mC) was significantly lower in moderate and high Pb-exposure groups when compared to the low Pb-exposure group. Workers exposed to high levels of Pb-exposure, the DA variables of 5-mC showed that the sensitivity was 74.7% [95% CI 65.4-84.0], specificity was 69.6% [95% CI 50.8-88.4], positive predictive value (PPV) was 89.9% [95% CI 82.7-97.0], Postive likelihood ratio (LR+) was 2.454 [95% CI 1.3-4.6], and diagnostic odds ratio (DOR) is 6.3 [95% CI 6.5-7.7]. In moderate Pb-exposure, the DA variables of 5-mC revealed that the sensitivity is 64.9% [95% CI 55.2-74.5], the specificity is 69.6% [95% CI 50.8-88.4], the PPV is 89.7% [95% CI 82.5-97.0], the LR+ is 2.132 [95% CI 1.13-4.03], and the DOR is 4.2 [95% CI 3.6-5.7]. The high Pb-exposure group had higher DA metrics when compared to moderate Pb exposure. The clinical utility (CU+) of 5-mC was found to have good utility of 0.671 [95% CI 0.566-0.776] in the high Pb exposure group and fair utility of 0.582 [95% CI 0.470-0.694] in moderate Pb exposure group. In conclusion, DNA methylation (5mC) could be used as a predictive biomarker for high Pb-exposure.

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来源期刊
Indian Journal of Clinical Biochemistry
Indian Journal of Clinical Biochemistry BIOCHEMISTRY & MOLECULAR BIOLOGY-
CiteScore
4.50
自引率
4.80%
发文量
74
期刊介绍: The primary mission of the journal is to promote improvement in the health and well-being of community through the development and practice of clinical biochemistry and dissemination of knowledge and recent advances in this discipline among professionals, diagnostics industry, government and non-government organizations. Indian Journal of Clinical Biochemistry (IJCB) publishes peer reviewed articles that contribute to the existing knowledge in all fields of Clinical biochemistry, either experimental or theoretical, particularly deal with the applications of biochemistry, molecular biology, genetics, biotechnology, and immunology to the diagnosis, treatment, monitoring and prevention of human diseases. The articles published also include those covering the analytical and molecular diagnostic techniques, instrumentation, data processing, quality assurance and accreditation aspects of the clinical investigations in which chemistry has played a major role, or laboratory animal studies with biochemical and clinical relevance.
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