1. 广州新华学院康复医学系,广东 广州 510520
2. 中山大学孙逸仙纪念医院重症医学科,广东 广州 510000
何志捷,第一作者,研究方向:脓毒症、重症感染,E-mail: hezhijie@mail.sysu.edu.cn
收稿:2025-09-04,
修回:2025-11-09,
录用:2025-11-28,
纸质出版:2026-01-20
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何志捷,李伟超,吴碧莹等.微滴式数字聚合酶链式反应在重症患者念珠菌感染中的应用[J].中山大学学报(医学科学版),2026,47(01):182-188.
HE Zhijie,LI Weichao,WU Biying,et al.Droplet Digital Polymerase Chain Reaction for Quantitative Detection of Candidiasis in Critically Ill Patients[J].Journal of Sun Yat-sen University(Medical Sciences),2026,47(01):182-188.
何志捷,李伟超,吴碧莹等.微滴式数字聚合酶链式反应在重症患者念珠菌感染中的应用[J].中山大学学报(医学科学版),2026,47(01):182-188. DOI: 10.11714/jsysu.med.YX20250119.
HE Zhijie,LI Weichao,WU Biying,et al.Droplet Digital Polymerase Chain Reaction for Quantitative Detection of Candidiasis in Critically Ill Patients[J].Journal of Sun Yat-sen University(Medical Sciences),2026,47(01):182-188. DOI: 10.11714/jsysu.med.YX20250119.
目的
2
探讨微滴式数字PCR(ddPCR)检测在重症患者念珠菌感染的诊断应用价值。
方法
2
建立ddPCR技术检测念珠菌的反应体系,验证ddPCR检测念珠菌的特异性、Cutoff值等,并应用ddPCR检测临床标本,与真菌培养结果比较,验证该方法在临床应用的可靠性。
结果
2
本研究建立的基于ddPCR检测念珠菌的方法与真菌培养比较,具有较高的特异性,ddPCR检测临床样本中念珠菌的敏感度及特异度分别为0.583(95%CI:0.433,0.721)和0.962(95%CI:0.924,0.982),检测结果与真菌培养结果基本一致(
Kappa
=0.604,
P
<0.05)。ddPCR检测时间约为7 h,明显短于传统的真菌培养法。
结论
2
ddPCR检测重症患者念珠菌感染可靠性高且检测时间短。基于ddPCR技术的念珠菌检测方法具有较大的潜在临床应用价值。
Objective
2
To evaluate the diagnostic value of droplet digital PCR (ddPCR) for detecting
Candida
infections in critically ill patients.
Methods
2
A ddPCR assay for
Candida
detection was established and optimized, including design of primers and probes, optimization of PCR reaction, and validation of analytical specificity and cutoff threshold. Clinical specimens were analyzed by ddPCR and fungal culture in parallel to assess clinical performance and reliability.
Results
2
The ddPCR assay demonstrated high analytical specificity for
Candida
detection. The sensitivity and specificity of ddPCR for detecting
Candida
in clinical samples were 0.583 (95%CI: 0.433, 0.721) and 0.962 (95%CI: 0.924, 0. 982). The ddPCR detection results were consi
stent with the fungal culture results (
Kappa
=0.604,
P
<
0.05). The total assay time for ddPCR was approximately 7 hours, substantially shorter than conventional fungal culture.
Conclusion
2
The ddPCR assay provides reliable and rapid detection of
Candida
in critically ill patients with markedly reduced turnaround time compared with conventional culture. Given its high specificity and operational efficiency, the ddPCR-based method holds significant potential for clinical implementation as a complementary diagnostic tool.
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