白血病患者阿萨希毛孢子菌血流感染1例并文献复习
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R181.3+2;R379

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福建医科大学启航基金项目(2021QH1243)


Bloodstream infection caused by Trichosporon asahii in an acute leukemia patient: a case report and literature review
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    摘要:

    目的 分析阿萨希毛孢子菌(T. asahii)血流感染患者的临床特征及诊疗方案,为临床对该病的诊治提供参考。方法 报告1例阿萨希毛孢子菌血流感染患者的诊治经过,并以“阿萨希毛孢子菌”“血流感染”“Trichosporon asahii”“bloodstream infection”为关键字,检索中国知网、万方、PubMed、Web of Science等数据库,回顾性分析患者年龄、性别、基础疾病、免疫状态、治疗及临床转归,以及阿萨希毛孢子菌药敏试验结果。结果 该白血病患者化学治疗期间发生阿萨希毛孢子菌血流感染,经氟康唑+氟胞嘧啶治疗后好转。文献检索纳入病例43例,包括该病例共44例。其中男性28例,中位年龄54.5岁。基础疾病主要为血液系统疾病,目前已发现导管、泌尿道及皮肤是合并培养阳性部位。三唑类抗菌药物体外抗菌活性较好,其中伏立康唑活性最佳且采用其治疗的患者生存率高;在药敏试验结果指导下,采用氟康唑治疗的患者也能获得较高的生存率。当氟康唑最低抑菌浓度(MIC)为4~8 μg/mL时,多数情况下联合其他药物进行治疗。两性霉素B体外活性较好,但其未联合三唑类治疗时患者总生存率低。移除导管、实施手术干预及中性粒细胞的恢复是生存率升高的影响因素。结论 阿萨希毛孢子菌所致血流感染在血液系统疾病患者中最常见,中性粒细胞减少为高危因素,导管、泌尿道及皮肤等部位感染可能是感染源。清除感染源并促进中性粒细胞的恢复有助于提高患者生存率。对于不能耐受伏立康唑的患者,根据药敏试验结果,可采用氟康唑联合或不联合氟胞嘧啶/两性霉素B的治疗方案作为替代。

    Abstract:

    Objective To analyze clinical characteristics and therapeutic strategies for patients with Trichosporon asahii (T. asahii) bloodstream infection (BSI), and provide reference for clinical diagnosis and treatment for such disease. Methods Diagnosis and treatment process of a patient with T. asahii BSI were reported. China National Knowledge Infrastructure(CNKI), Wanfang, PubMed, and Web of Science databases were retrieved using keywords: "Trichosporon asahii" and "bloodstream infection". Patients’ age, gender, underlying diseases, immune status, treatment, and clinical outcome as well as antimicrobial susceptibility testing results of T. asahii were analyzed retrospectively. Results The leukemia patient developed T. asahii BSI during chemotherapy, and showed clinical improvement after treatment with fluconazole+flucytosine. A total of 44 cases (43 from literature plus this index case) were analyzed. Among these cases, 28 were males, the median age was 54.5 years old. The underlying diseases were predominantly hematological diseases. Catheter, urinary tract, and skin were identified as concurrent culture-positive sites. Azoles exhibited good antimicrobial activity in vitro, with voriconazole showing the strongest activity and associated with significantly higher survival rates. Under the guidance of antimicrobial susceptibility testing results, patients with fluconazole treatment had a higher survival rate. At minimum inhibitory concentrations (MICs) of 4-8 μg/mL of fluconazole, fluconazole combined with other agents was predominantly required. Amphotericin B demonstrated good in vitro activity, but the overall survival rate of patients was low when amphotericin B was used as monotherapy without azoles. Catheters removal, surgical intervention, and neutrophil recovery were influencing factors for enhanced survival rates. Conclusion BSI caused by T. asahii primarily occurs in patients with hematological diseases, with neutropenia being a high-risk factor. Infection sites at catheter, urinary tract, and skin may be infection sources. Clearing the source of infection and promoting the recovery of neutrophils can help to improve survival rates of patients. For voriconazole-intolerant patients, fluconazole monotherapy or in combination with flucytosine/amphotericin B can be used alternatively based on antimicrobial susceptibility testing results.

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蔡莉莉,林志航,郭如意,等.白血病患者阿萨希毛孢子菌血流感染1例并文献复习[J]. 中国感染控制杂志,2025,24(5):609-617. DOI:10.12138/j. issn.1671-9638.20256700.
CAI Lili, LIN Zhihang, GUO Ruyi, et al. Bloodstream infection caused by Trichosporon asahii in an acute leukemia patient: a case report and literature review[J]. Chin J Infect Control, 2025,24(5):609-617. DOI:10.12138/j. issn.1671-9638.20256700.

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  • 收稿日期:2024-07-09
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  • 在线发布日期: 2025-05-23
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