某地区新生儿葡萄糖-6-磷酸脱氢酶筛查结果分析

目的了解广西地区新生儿葡萄糖-6-磷酸脱氢酶(G6PD)缺乏症的发病情况,为患该病新生儿的防治提供参考依据。方法采用荧光法对本筛查中心的30 556例新生儿进行G6PD筛查检测,对可疑患儿召回并用G6PD/6PGD比值法进行确诊。结果所有被检测的新生儿中G6PD缺乏症的初筛阳性率是7.36%,其中男性为10.89%,女性为2.86%;对民族进行分组,汉族G6PD缺乏症的初筛阳性率是5.29%,壮族为9.54%,其他少数民族为5.42%。对可疑患儿召回确诊发现荧光法与G6PD/6PGD比值法的符合率为97%,重度G6PD缺陷者符合率达100%。结论荧光法准确性高、简便、快捷、费用低廉,广西壮族自治区作为G6PD缺乏症的高发区,应常规开展新生儿葡萄糖-6-磷酸脱氢酶缺乏症的筛查工作,使G6PD缺乏症患者能够及时采取预防性措施。     

清远地区葡萄糖-6-磷酸脱氢酶缺乏症检测结果分析

目的 了解清远地区葡萄糖-6-磷酸脱氢酶(G6PD)缺乏症的发病分布情况.方法 用改良G6PD/6-磷酸葡萄糖酸脱氢酶(6PGD)定量比值法,对2 561例就诊患者进行红细胞中G6PD含量的检测.结果 在2 561例受检者中,检出G6PD缺乏者246例,发生率9.6%.其中小于或等于17岁的少儿组检出105例G6PD缺乏症,发病率4.1%;18～40岁生育组检出133例,发病率5.2%;≥41岁中老年组检出8例,发病率0.3%.特别是少儿组在受检患儿中G6PD缺乏症发病率高达51.7%(105/203),其中男童占47.3%(96/203),女童占4.4%(9/203).结论 清远地区位于南方的广东省,是G6PD缺乏症高发区域.应加强对孕产夫妇优生优育的科学宣教,让他们了解G6PD缺乏症日常注意事项,加强儿童G6PD缺乏症的筛查,做到早知道、早预防,减少溶血的发生,降低儿童的黄疸发生率,保护智力发育,提高身体素质.     

云南省部分县/市新生儿G6PD缺乏症筛查结果及阳性临界值分析

目的回顾性分析昆明医科大学第一附属医院新生儿遗传代谢病筛查中心6年来葡萄糖-6-磷酸脱氢酶(G6PD)缺乏症筛查结果,同时对其筛查阳性临界值进行探讨。方法采用荧光分析法,对新生儿G6PD水平进行筛查检测,用G6PD/6PGD定量比值法对筛查阳性患儿进行确诊,采用受试者工作特征曲线确认筛查阳性临界值。结果2013-2018年,共筛查155880例G6PD标本(男性81390例,女性74490例),筛查率为16.74%。确诊患儿1187例(男性1063例,女性124例),G6PD缺乏症的发病率为0.76%(男性1.31%,女性0.16%),男性、女性发病率比较,差异有统计学意义(χ^2=349.71,P<0.001)。男性、女性的G6PD缺乏症筛查阳性临界值分别为2.25、2.45 U/gHb。结论该中心的G6PD缺乏症筛查率较低,后续要加强宣传进一步提高筛查率。确定适宜的筛查阳性临界值能够最大限度地避免假阳性结果和漏筛情况的发生。     

3140例新生儿脐带血葡萄糖-6-磷酸脱氢酶检测结果分析

目的 总结和分析本院新生儿脐带血葡萄糖-6-磷酸脱氢酶(G6PD)活性检测结果,为新生儿G6PD缺乏症筛查提供依据和参考.探讨脐带血G6PD检测在新生儿黄疸鉴别诊断及早期防治中的临床意义.方法 新生儿出生后立即取脐带血置于乙二胺四乙酸抗凝真空管,采用全自动生化分析仪进行定量检测,低于参考值为缺乏.结果 G6PD缺乏率为10.10%,其中男婴为12.00%,女婴为7.77%,男性缺乏率高于女性缺乏率.结论 采用新生儿脐带血检测G6PD活性,取材方便、简单,能有效、早期筛查出G6PD缺乏患儿,脐带血G6PD活性检测在新生儿黄疸鉴别诊断及早期治疗中有重要临床价值.     

广东地区育龄人群葡萄糖-6-磷酸脱氢酶缺乏症筛查结果分析

目的通过对广东地区育龄人群葡萄糖-6-磷酸脱氢酶(G6PD)缺乏症筛查结果进行分析,了解广东地区育龄人群发病情况,并为该病的防治提供参考依据。方法采用连续监测速率法对广东地区72 921例育龄女性和男性进行G6PD活性定量检测,并对筛查结果进行分析。结果广东地区育龄人群G6PD缺乏症的发病率为4.28﹪(3 119/72 921),其中育龄男性的发病率为8.98%(989/11 010),育龄女性的发病率为3.44%(2 130/61 911)。结论开展育龄人群G6PD缺乏症筛查工作,对优生优育、提高人口素质具有非常重要的意义。     

孕妇及高胆红素血症新生儿G6PD检测结果分析

目的 探讨产前及新生儿葡萄糖-6-磷酸脱氢酶(G6PD)活性检测的意义.方法 采用比值法检测4 000例孕妇产前血标本及其所分娩的787例高胆红素血症新生儿血标本.结果 4 000例孕妇G6PD缺乏症检出率为4.1%(164/4 000);787例高胆红素血症新生儿G6PD缺乏症发病率为13.8%(109/787).结论 本地区孕妇G6PD缺乏症发病率较高;G6PD缺乏症是引起新生儿溶血病的主要原因.孕妇产前和胎儿出生后进行G6PD活性检测有利于减少新生儿溶血病的发病率和提高治愈率.     

广西地区葡萄糖-6-磷酸脱氢酶缺乏症的流行病学调查和基因突变型鉴定

目的 了解广西地区葡萄糖-6-磷酸脱氢酶（G6PD）缺乏症的发病率和基因突变类型.方法 对广西地区2 187例新生儿样本采用四氮唑蓝定量法进行G6PD活性筛查;对其中经G6PD活性测定诊断为G6PD缺乏的62例新生儿采用自然或错配引物介导的聚合酶链反应/限制性内切酶分析检测中国人群3种最常见的G6PD基因突变型.结果 2187例新生儿中筛查出G6PD缺乏的有235例（10.75%）,62例基因检测发现G1388A突变25例G1376T突变16例,A95G突变4例,其余未定型,3种常见突变共45例,占72.58%（45/62）;其中5例经DNA测序证实.结论 广西地区G6PD缺乏症的发病率为10.75%,G1388A、G1376T和A95G也是广西地区G6PD缺乏症的常见基因突变型.     

广东省汕头市新生儿遗传代谢疾病筛查结果分析

目的了解汕头市新生儿先天性甲状腺功能减低症(CH)、苯丙酮尿症(PKU)和葡萄糖-6-磷酸脱氢酶(G6PD)缺乏症的筛查情况及发病率。方法对汕头市2012年5月~2015年12月已进行新生儿疾病筛查的104079例结果进行分析。结果汕头市CH发病率为0.02%,PKU发病率为0.003%,G6PD发病率为0.06%。4年来的平均筛查率为30.6%,呈逐年上升趋势。结论新生儿疾病筛查是CH、PKU和G6PG缺乏症早期诊断的有效措施,尽早干预可避免发生体格和智能发育障碍,对提高我国人口素质具有深远意义。     

2072名新生儿葡萄糖-6-磷酸脱氢酶缺乏症筛查分析

红细胞葡萄糖-6-磷酸脱氢酶（G6PD）缺乏症又称蚕豆病，是摄入蚕豆后引起的一种急性贫血。临床以贫血、黄疽、血红细胞蛋白尿为主要特点。发病年龄以9岁以下小儿最多见，男性显著多于女性^[1]。为了解玉林市新生儿G6PD缺乏症状况，我们对2072名新生儿进行G6PD缺乏症的筛查并对部份筛查阳性者于出生后2—3个月内召回复查。     

广东省4个地区葡萄糖-6-磷酸脱氢酶缺乏症筛查结果分析

目的了解广东省粤东、粤中、粤西、粤北4个地区人群中红细胞葡萄糖-6-磷酸脱氢酶(G6PD)缺乏症的发病情况。方法选取广东省2014年1月至2015年12月送检到该中心所有筛查G6PD缺乏症标本,采用改良G6PD测定试剂盒(定量比值法)检测G6PD活性。结果在受检的39 644例标本中,共检测出G6PD缺乏2 672例,检出率为6.74%;粤东地区7 359例标本,占标本总数18.56%,检测出G6PD缺乏419例,检出率为5.69%(419/7 359);粤中地区27 684例标本,占标本总数69.83%,检测出G6PD缺乏1 734例,检出率为6.26%(1 734/27 684);粤西地区3 774例标本,占标本总数9.52%,检测出G6PD缺乏386例,检出率为10.23%(386/3 774);粤北地区827例,占标本总数2.09%,检测出G6PD缺乏133例,检出率为16.08%(133/827)。结论广东省是G6PD缺乏症的高发地区,应注意在育龄人群和新生儿中进行该疾病的筛查,以降低G6PD缺乏症的发病率及预防其引起的并发症。     

成都市新生儿葡萄糖-6-磷酸脱氢酶缺乏症筛查分析

目的 了解成都地区新生儿葡萄糖-6-磷酸脱氢酶（G6PD）缺乏症的发病分布情况.方法 采用NADP＋氧化还原酶法,对11 085例（男6 440例,女4 645例）就诊患儿进行红细胞中G6PD活性的定量检测.结果 在11 085例受检者中,检出G6PD缺乏者677例,总检出率6.1%.其中男婴545例,占男婴检查人数的8.46%（545/6 440）;女婴132例,占女婴检查人数的2.84%（132/4 645）.结论 成都地区G6PD缺乏症检出率较高,应在新生儿期常规开展G6PD检测,及早诊断,采取有效防范措施,预防由G6PD缺乏引起的新生儿高胆红素血症及核黄疸的发生.     

间接法建立上海地区新生儿G6PD筛查临界值的可行性

目的 探讨间接法建立上海地区新生儿葡萄糖-6-磷酸脱氢酶(G6PD)筛查临界值的可行性.方法 收集134747名新生儿的G6PD检测数据,采用Kolmogorov-Smirnov检验分析数据分布.偏态分布数据采用Box-Cox转换成近似正态分布.采用四分位间距(Turkey)法剔除离群值后建立参考区间,以参考区间下限[...     

应用荧光斑点法筛查葡萄糖6-磷酸脱氢酶缺乏

目的：建立适于葡萄糖6－磷酸脱酸酶（G6PD）缺乏新生儿筛查的检测方法。方法：用荧光斑点法（FST）对新生儿筛查滤纸干血片标本进行检测,对阳性者召回,抽静脉血以G6PD／6PGD比值法进行确诊,结果：用FST测定11437份新生儿筛查滤纸干血片标本的G6PD活性,其筛查阳性率4．2％,确诊检出率3．7％。与G6PD／6PGD比值法的符合率为86．8％,重度G6PD缺陷者符合率达100％,具有高敏感性和特异性,结论：FST准确性高,简便、快捷、费用低廉,可以滤纸干血片标本进行大规模的筛查检测, 适宜在高发区开展G6PD缺乏的新生儿筛查和早期诊断及防治工作中应用。     

Rapid detection of twenty-nine common Chinese glucose-6-phosphate dehydrogenase variants using a matrix-assisted laser desorption/ionization-time of flight mass spectrometry assay on dried blood spots

BackgroundGlucose-6-phosphate dehydrogenase (G6PD) deficiency is the most common inherited disease. Current neonatal screening methods for G6PD deficiency primarily rely on the use of biochemical tests. However, only 15%–20% of female carriers were estimated to have been detected using these tests. As a better alternative, DNA-based tests could be used for G6PD deficiency screening. We aimed to develop a matrix-assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-TOF MS) assay for G6PD variant detection.MethodsA MALDI-TOF MS assay with multiprimer extension (multi-PEX) was developed to rapidly and accurately detect the 29 common G6PD variants in the Chinese population using a dried blood spot as a template. A parallel study screening 571 unrelated neonatal samples using the MALDI-TOF MS and fluorescence quantitative enzymatic assays was performed. All results were confirmed by Sanger sequencing in a blind study.ResultsIn 571 unrelated neonatal samples, 34 positive samples, including 26 samples from hemizygous males and eight samples from heterozygous females, were correctly identified, yielding a clinical sensitivity of 100%. The results were validated using Sanger sequencing with 100% concordance. In contrast, the fluorescence quantitative enzymatic assay had a 75% false negative and 88.8% false positive rate for the detection of heterozygous G6PD deficient females.ConclusionsWe established a reliable MALDI-TOF MS assay for G6PD deficiency screening in the Chinese population maximizing the chance of detection of heterozygous G6PD deficient females and reducing the false negative and false positive rates associated with routinely used newborn screening procedures.     

An update on the prevalence of glucose-6-phosphate dehydrogenase deficiency and neonatal jaundice in Tehran neonates

OBJECTIVES: The aim of this study was to screen newborns in Tehran for glucose-6-phosphate dehydrogenase (G6PD) deficiency in relation to hyperbilirubinemia and jaundice. DESIGN AND METHODS: We performed quantitative and qualitative red blood cell (RBC) G6PD assays in cord blood of 2000 male and female at-term neonates. Observations for jaundice and bilirubin determination were made in G6PD-deficient and normal groups. Those with severe jaundice were treated with phototherapy or exchange transfusion. RESULTS: Our results showed that 2.1% (3.6% of males and 0.6% of females) was G6PD-deficient. Those with severe jaundice and hyperbilirubinemia (160 normal and 17 G6PD-deficient) were hospitalized and treated with phototherapy or exchange transfusion. Bilirubin levels in G6PD-deficient neonates were somewhat higher compared to G6PD-normal babies (18.8 +/- 2.4 mg/dl [321.5 +/- 41 micromol/l] vs. 15.7 +/- 3.2 mg/dl [268.5 +/- 54.7 micromol/l]; P < 0.05). G6PD activity was significantly lower in G6PD-deficient group than in the normal group (2.1 +/- 0.7 vs. 12.5 +/- 5.0 U/g Hb; P < 0.001). CONCLUSION: This study shows that the incidence of G6PD deficiency in newborns of Tehran is 2.1%, which is relatively high, and also hyperbilirubinemia and jaundice are approximately 3-fold higher in G6PD-deficient group than in the G6PD-normal group (51% vs. 16%). This emphasizes the necessity of neonatal screening on cord blood samples of both sexes for G6PD deficiency and the need to watch closely for development of hyperbilirubinemia.     

Prevalence of G6PD deficiency in newborns in the south of Brazil

Glucose-6-phosphate dehydrogenase (G6PD) deficiency is an X-linked disorder which causes neonatal jaundice in most cases, and in association with intake of drugs or certain foods (for example fava) can cause haemolytic crises. The aim of this study was to determine the prevalence of G6PD deficiency in Rio Grande do Sul (RS), the southernmost state of Brazil. We tested 2799 newborn blood samples. A commercial kit was used for the quantitative measurement of G6PD activity. Of the 2799 samples, 39 (1.4%) exhibited total deficiency, 178 (6.4%) exhibited intermediate deficiency and 2582 (92.2%) were normal. We found no correlation between G6PD deficiency and ethnic origin, but a high prevalence of patients with partial deficiency could be associated with the type of colonization of RS. The combined prevalence for both types of deficiency (complete and partial) was 7.9% among the newborn population. This finding is important as both types of deficiency must receive same kind of preventive care.