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广州地区正常儿童血清维生素B12参考区间调查

2017-08-04黄钰君伍绍国丘媛

中国医药导报 2017年16期
关键词:儿童

黄钰君++++++伍绍国++++++丘媛媛++++++蔡敏敏++++++陈慧敏+++++++黎彦攸

[摘要] 目的 建立广州地区健康儿童血清维生素B12(VB12)参考区间。 方法 应用LK3000V维生素检测仪对2015年9月~2016年12月广州地区2065名健康儿童(男1208名,女857名)和129名成年人(男52名,女77名)的血清VB12水平进行检测,对结果进行统计分析。 结果 11岁以内的11个年龄组、11~17岁组男、女血清VB12水平差异均无统计学意义(P > 0.05)。0~2岁、>2~5岁和>7~17岁、>5~7岁、>17岁血清VB12水平中位数(P2.5,P97.5)分别为252.4(192.3,338.0)、253.1(192.5,359.5)、262.7(194.8,374.9)、297.5(233.7,383.1) pg/mL,兩两比较差异有统计学意义(P < 0.05)。年龄与血清VB12水平的相关系数(r值)为0.228(P=0.000)。 结论 广州地区正常儿童血清VB12水平参考区间2岁以内为192.3~338.0 pg/mL,>2~5岁和>7~17岁两个年龄段为192.5~359.5 pg/mL,>5~7岁为194.8~374.9 pg/mL。

[关键词] 参考区间;维生素B12;广州地区;儿童

[中图分类号] R179 [文献标识码] A [文章编号] 1673-7210(2017)06(a)-0114-05

Investigation on the normal reference range of healthy children serum Vitamin B12 in Guangzhou

HUANG Yujun1 WU Shaoguo2 QIU Yuanyuan3 CAI Minmin4 CHEN Huimin5 LI Yanyou6

1.Department of Laboratory Medicine, Guangzhou Children's Hospital, Guangdong Province, Guangzhou 510120, China; 2.Department of Laboratory Medicine, Guangzhou 12th People's Hospital, Guangdong Province, Guangzhou 510620, China; 3.Department of Laboratory Medicine, Guangzhou Maternity Health Care Center, Guangdong Province, Guangzhou 510120, China; 4.Department of Laboratory Medicine, Zhujiang New Town Branch of Guangzhou Women and Children Medical Center, Guangdong Province, Guangzhou 510620, China; 5.Department of Clinical Nutrition, Zhujiang New Town Branch of Guangzhou Women and Children Medical Center, Guangdong Province, Guangzhou 510620, China; 6.Tianjin Lanbiao Science and Technology Ltd., Tianjin 300384, China

[Abstract] Objective To establish the normal reference range of healthy children serum Vitamin B12 (VB12) in Guangzhou. Methods Levels of serum VB12 of 2065 healthy children (1208 boys and 857 girls) and 129 adults (52 male and 77 female) living in Guangzhou Region were examined by LK3000V Vitamin Analyzer from September 2015 to December 2016. The results were analyzed statistically. Results There were no statistical differences in levels of serum VB12 between boys and girls in 11 age groups (aged less than 11) and 11-17 age group (P > 0.05). The median (P2.5, P97.5) levels of serum VB12 defined by age were 252.4 (192.3, 338.0) pg/mL of 0-2 years-old group, 253.1 (192.5, 359.5) pg/mL of >2-5 years-old group as well as >7-17 years-old group, 262.7 (194.8, 374.9) pg/mL of >5-7 years-old group, 297.5 (233.7, 383.1) pg/mL of >17 years-old group, there were statistically significant differences between any two groups (P < 0.05). Positive correlation was found between age and level of serum VB12 (r=0.228, P=0.000). Conclusion Reference ranges of healthy children serum VB12 in Guangzhou Region are showed as follows: 192.3-338.0 pg/mL of 0-2 years-old children, 192.5-359.5 pg/mL of >2-5 years-old as well as >7-17 years-old children, and 194.80-374.9 pg/mL of >5-7 years-old children.

[Key words] Reference range; Vitamin B12; Guangzhou Region; Children

维生素B12(vitamin B12,VB12)是儿童正常生长发育而所必需的微量营养素之一,对血液系统成熟、神经系统的发育有重要作用。典型的VB12缺乏导致巨幼细胞性贫血,但通常没有贫血症状的隐性VB12缺乏者若治疗不及时将造成不可逆的神经系统损害,如记忆力减退、学习成绩和认知能力下降、行为异常等[1]。儿童早期VB12缺乏可能仅表现为体质虚弱、发育迟缓等非特异性的症状,临床诊断较困难,因此早期诊断并及时治疗是预防长期神经系统并发症的关键[2]。然而,迄今未有诊断VB12缺乏的金标准,血清VB12作为目前判断机体VB12水平的一线指标,是首选标准常规诊断试验[3]。正确的参考区间是判断血清VB12是否缺乏的前提。国内外研究均显示,正常人群血清VB12水平存在着明显的人种、地区、性别、年龄间差异,各地应该建立当地的参考范围[4-9]。国内有关正常人群VB12参考区间的研究多数基于成年人群,较少见儿童人群的报道,尤其欠缺对正常儿童按年龄、性别进行分层的大样本系统研究。本文按照美国临……

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