目的探究聚合酶链反应-序列特异性引物(PCR-SSP)技术联合抗人球蛋白卡式法在ABO和RhD血型鉴定困难患者中的应用。方法选取118例ABO与RhD血型鉴定困难患者血型标本,分别应用PCR-SSP技术、抗人球蛋白卡式法分析患者血型情况。结果118例血...目的探究聚合酶链反应-序列特异性引物(PCR-SSP)技术联合抗人球蛋白卡式法在ABO和RhD血型鉴定困难患者中的应用。方法选取118例ABO与RhD血型鉴定困难患者血型标本,分别应用PCR-SSP技术、抗人球蛋白卡式法分析患者血型情况。结果118例血型鉴定困难者采用抗人球蛋白卡式法联合PCR-SSP技术明确检出ABO血型113例,同时应用PCR-SSP可以确定ABO亚型,5例未检出血型的样品经PCR-SSP测序发现,基因分型分别为BO02、A205O01、A102B01、A201B01、B01B01,分别出现第7外显子640A>G杂合突变、第7外显子1009A>G杂合突变、第3外显子150G>C杂合突变、第6外显子240T>C、第7外显子431G>T杂合突变;采用抗人球蛋白卡式法联合PCR-SSP检出RhD血型114例,未检出的4例进行测序,1例显示为RhD weak D 779A/G突变;3例为RhD weak D type 4.0(包括602C/G、667T/G以及819G/A突变)。结论ABO和RhD血型鉴定困难患者应用PCR-SSP技术联合抗人球蛋白卡式法进行鉴定可以准确鉴定血型,并发现血型具体亚型,保证输血安全。展开更多
Bioremediation of organophosphorus pesticides in contaminated foodstuffs using probiotics has been increasingly under the spotlight in recent years,though the biodegradation mechanism and derived intermediate products...Bioremediation of organophosphorus pesticides in contaminated foodstuffs using probiotics has been increasingly under the spotlight in recent years,though the biodegradation mechanism and derived intermediate products remain unclear.This study aimed to help fill this knowledge gap and examined the degradation mechanism of organophosphorus pesticide,chlorpyrifos,in milk by Lactobacillus delbrueckii ssp.bulgaricus using gas chromatography-tandem mass spectrometry(GC-MS/MS)combined with transcriptome analysis.After the strain was cultured for 20 h in the presence of chlorpyrifos,differential expressions of 383 genes were detected,including genes probably implicated during chlorpyrifos degradation such as those related to hydrolase,phosphoesterase,diphosphatase,oxidoreductase,dehydratase,as well as membrane transporters.GC-MS/MS analysis revealed the changes of secondary metabolites in L.bulgaricus during milk fermentation due to chlorpyrifos stress.6-Methylhexahydro-2H-azepin-2-one,2,6-dihydroxypyridine and methyl 2-aminooxy-4-methylpentanoate as intermediates,along with the proposed pathways,might be involved in chlorpyrifos biodegradation by L.bulgaricus.展开更多
文摘目的探究聚合酶链反应-序列特异性引物(PCR-SSP)技术联合抗人球蛋白卡式法在ABO和RhD血型鉴定困难患者中的应用。方法选取118例ABO与RhD血型鉴定困难患者血型标本,分别应用PCR-SSP技术、抗人球蛋白卡式法分析患者血型情况。结果118例血型鉴定困难者采用抗人球蛋白卡式法联合PCR-SSP技术明确检出ABO血型113例,同时应用PCR-SSP可以确定ABO亚型,5例未检出血型的样品经PCR-SSP测序发现,基因分型分别为BO02、A205O01、A102B01、A201B01、B01B01,分别出现第7外显子640A>G杂合突变、第7外显子1009A>G杂合突变、第3外显子150G>C杂合突变、第6外显子240T>C、第7外显子431G>T杂合突变;采用抗人球蛋白卡式法联合PCR-SSP检出RhD血型114例,未检出的4例进行测序,1例显示为RhD weak D 779A/G突变;3例为RhD weak D type 4.0(包括602C/G、667T/G以及819G/A突变)。结论ABO和RhD血型鉴定困难患者应用PCR-SSP技术联合抗人球蛋白卡式法进行鉴定可以准确鉴定血型,并发现血型具体亚型,保证输血安全。
基金supported by Natural Science Foundation of China(41907357)Natural Science Foundation of Shandong(ZR2019PC048)the Key R&D project of Shandong Province(2021TZXD007).
文摘Bioremediation of organophosphorus pesticides in contaminated foodstuffs using probiotics has been increasingly under the spotlight in recent years,though the biodegradation mechanism and derived intermediate products remain unclear.This study aimed to help fill this knowledge gap and examined the degradation mechanism of organophosphorus pesticide,chlorpyrifos,in milk by Lactobacillus delbrueckii ssp.bulgaricus using gas chromatography-tandem mass spectrometry(GC-MS/MS)combined with transcriptome analysis.After the strain was cultured for 20 h in the presence of chlorpyrifos,differential expressions of 383 genes were detected,including genes probably implicated during chlorpyrifos degradation such as those related to hydrolase,phosphoesterase,diphosphatase,oxidoreductase,dehydratase,as well as membrane transporters.GC-MS/MS analysis revealed the changes of secondary metabolites in L.bulgaricus during milk fermentation due to chlorpyrifos stress.6-Methylhexahydro-2H-azepin-2-one,2,6-dihydroxypyridine and methyl 2-aminooxy-4-methylpentanoate as intermediates,along with the proposed pathways,might be involved in chlorpyrifos biodegradation by L.bulgaricus.
