1.中山大学中山眼科中心//广东省眼库,广东 广州 510623
2.中山大学中山眼科中心角膜科,广东 广州 510623
胡慧聪,并列第一作者,研究方向:角膜眼表疾病与眼库,E-mail:huiconghoo@163.com
收稿:2026-06-25,
修回:2026-07-24,
录用:2026-08-28,
纸质出版:2026-09-20
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冀建平,胡慧聪,欧展聪等.眼库供体角膜微生物培养结果及病原学分析[J].中山大学学报(医学科学版),2026,47(05):886-898.
JI Jianping,HU Huicong,OU Zhancong,et al.Microbial Culture Results and Pathogen Profiles of Donor Corneas in Eye Bank[J].Journal of Sun Yat-sen University(Medical Sciences),2026,47(05):886-898.
冀建平,胡慧聪,欧展聪等.眼库供体角膜微生物培养结果及病原学分析[J].中山大学学报(医学科学版),2026,47(05):886-898. DOI: 10.11714/jsysu.med.YX20260090.
JI Jianping,HU Huicong,OU Zhancong,et al.Microbial Culture Results and Pathogen Profiles of Donor Corneas in Eye Bank[J].Journal of Sun Yat-sen University(Medical Sciences),2026,47(05):886-898. DOI: 10.11714/jsysu.med.YX20260090.
目的
2
分析广东省眼库供体角膜微生物培养阳性率、病原谱、多重耐药菌(MDROs)检出情况及不同获取来源之间的差异,为眼库角膜植片质量控制及角膜移植术后感染防控提供参考。
方法
2
回顾性分析2018-2025年广东省眼库获取并于中山大学中山眼科中心进行角膜移植的7 442例供体角膜资料。术中剪取供体角巩膜缘组织进行细菌及真菌培养,对培养阳性样本进行微生物鉴定和药物敏感性试验。比较不同年份、不同病原体类型、不同获取来源的供体角膜微生物培养情况。
结果
2
7 442例供体角膜中,微生物培养阳性样本共251例,培养阳性率为3.37%,各年度阳性率为1.50%~5.31%。其中,细菌培养阳性178例(70.92%),真菌培养阳性72例(28.68%),细菌合并真菌培养阳性1例(0.40%)。真菌以念珠菌属、曲霉属为主。细菌检出中,革兰阴性菌多于革兰阳性菌,常见菌种为鲍曼不动杆菌、表皮葡萄球菌、嗜麦芽窄食单胞菌、粪肠球菌及荧光假单胞菌;MDROs占比75.47%,以鲍曼不动杆菌、表皮葡萄球菌及粪肠球菌为主,且近年来呈上升趋势。医院角膜获取项目(HCRP)来源供体角膜培养阳性率高于器官获取组织(OPO)来源(
P
<0.000 1);HCRP来源培养阳性供体角膜真菌检出率高于OPO来源 (
P
=0.001 5);OPO来源细菌培养阳性供体角膜MDROs检出率高于HCRP来源(
P
=0.005 2)。
结论
2
广东省眼库供体角膜培养阳性率总体较低,微生物污染风险整体可控。不同供体获取来源的病原学特征及耐药情况存在差异。持续开展微生物监测及耐药性监测,完善供体风险评估及培养结果反馈机制,有助于提高眼库质量管理水平,为角膜移植术后感染防控提供参考。
Objective
2
To analyze the microbial culture positivity rate, pathogen spectrum, prevalence of multidrug-resistant organisms (MDROs), and differences among donor procurement sources in corneas from the Eye Bank of Guangdong Province, and to provide evidence for eye bank quality control and the prevention of post-keratoplasty infections.
Methods
2
This retrospective study included 7 442 donor corneas procured by the Eye Bank of Guangdong Province and used for keratoplasty at Zhongshan Ophthalmic Center, Sun Yat-sen University, between 2018 and 2025. During surgery, donor corneoscleral rim tissue was excised for bacterial and fungal culture. Culture-positive specimens underwent microbial identification and antimicrobial susceptibility testing (AST). Culture-positive corneas were compared across study years, pathogen categories, and donor procurement sources.
Results
2
Of the 7 442 donor corneas, 251 were culture-positive, corresponding to an overall culture positivity rate of 3.37%, with annual rates ranging from 1.50% to 5.31%. Among culture-positive corneas, 178 (70.92%) yielded bacteria alone, 72 (28.68%) yielded fungi alone, and 1 (0.40%) yielded both bacteria and fungi.
Candida spp.
and
Aspergillus spp.
were the predominant fungal isolates.
Gram-negative bacteria were more frequently isolated than Gram-positive bacteria. The most common bacterial isolates were
Acinetobacter baumannii
,
Staphylococcus epidermidis
,
Stenotrophomonas maltophilia
,
Enterococcus faecium
, and
Pseudomonas fluorescens
. MDROs accounted for 75.47% of bacterial isolates, predominantly
Acinetobacter baumannii
,
Staphylococcus epidermidis
, and
Enterococcus faecium
, and demonstrated an increasing trend over the study period. Donor corneas procured through the Hospital Cornea Retrieval Program (HCRP) had a higher culture positivity rate than those obtained through Organ Procurement Organization (OPO) (
P
<0.000 1). Among culture-positive donor corneas, the proportion of fungal culture-positive corneas was significantly higher in the HCRP group than in the OPO group (
P
=0.001 5), whereas the proportion of MDROs among bacterial culture-positive corneas was significantly higher in the OPO group than that in the HCRP group (
P
=0.005 2).
Conclusions
2
The overall culture positivity rate of donor corneas from the Eye Bank of Guangdong Province is relatively low, indicating that the risk of microbial contamination is controlled. However, pathogen profiles and antimicrobial resistance patterns varies by procurement source. Ongoing microbiological and antimicrobial resistance surveillance, together with optimized donor risk assessment and timely reporting of culture results, may further improve eye bank quality management and help inform strategies for preventing post-keratoplasty infections.
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