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清开灵颗粒辅助治疗老年细菌性AURI临床症状及对睡眠质量的影响
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作者 何冰 《世界睡眠医学杂志》 2025年第10期2220-2222,共3页
目的:探讨清开灵颗粒辅助治疗老年细菌性急性上呼吸道感染(AURI)临床症状及对睡眠质量的影响。方法:选取2024年1—12月江苏大学附属医院收治的细菌性AURI老年患者60例作为研究对象,按照随机数字表法分为观察组和对照组,每组30例。比较2... 目的:探讨清开灵颗粒辅助治疗老年细菌性急性上呼吸道感染(AURI)临床症状及对睡眠质量的影响。方法:选取2024年1—12月江苏大学附属医院收治的细菌性AURI老年患者60例作为研究对象,按照随机数字表法分为观察组和对照组,每组30例。比较2组临床症状消失时间、炎症指标、匹兹堡睡眠质量指数(PSQI)及不良反应发生率。结果:观察组退热时间、咳嗽持续天数及咽部红肿消退时间均低于对照组(均P<0.05),2组患者白细胞计数(WBC)和C反应蛋白(CRP)水平均较治疗前降低,且观察组下降幅度高于对照组(P<0.05),2组PSQI评分均较前降低,观察组各项评分均低于对照组(均P<0.05),2组不良反应发生率比较,差异无统计学意义(P>0.999)。结论:清开灵颗粒辅助治疗老年细菌性AURI能有效缓解临床症状,显著改善患者睡眠质量。 展开更多
关键词 清开灵颗粒 auri 老年 睡眠质量 匹兹堡睡眠质量指数 临床疗效 炎症指标 不良反应
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绿针假单胞菌GP72中aurI/aurR系统调控功能 被引量:1
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作者 马润亭 郭树奇 +1 位作者 王威 张雪洪 《微生物学通报》 CAS CSCD 北大核心 2019年第2期252-260,共9页
【背景】绿针假单胞菌(Pseudomonas chlororaphis) GP72是一株可生产吩嗪类抗生素吩嗪-1-羧酸(PCA)和2-羟基吩嗪(2-OH-PHZ)的生防根际促生菌。基因组比对发现GP72菌中存在aurI/aurR双元调控系统。【目的】研究该系统对GP72中吩嗪类物质... 【背景】绿针假单胞菌(Pseudomonas chlororaphis) GP72是一株可生产吩嗪类抗生素吩嗪-1-羧酸(PCA)和2-羟基吩嗪(2-OH-PHZ)的生防根际促生菌。基因组比对发现GP72菌中存在aurI/aurR双元调控系统。【目的】研究该系统对GP72中吩嗪类物质的调控作用。【方法】将aurI基因在大肠杆菌中异源表达,用紫色杆菌CV026和根癌农杆菌NTL4做显色实验。构建基因敲除菌株和回补菌株,发酵测量突变株的生长曲线与总吩嗪产量。构建转录融合质粒,测定吩嗪合成基因启动子的转录水平。【结果】显色实验显示,aurI能产生多种信号分子,使CV026显紫色、NTL4显蓝色。分别单独敲除aurI和aurR基因,同时敲除aurI/aurR基因,吩嗪产量均会升高,而回补菌株吩嗪产量降为野生型水平。β-半乳糖苷酶活性测定结果显示,突变株的酶活比野生型高。【结论】aurI/aurR负调控GP72的吩嗪合成,通过抑制吩嗪合成启动子的转录而影响吩嗪类物质的产量。 展开更多
关键词 绿针假单胞菌GP72 auri/aurR双元调控系统 吩嗪类化合物 群体感应
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Biofilm-forming fluconazole-resistant Candida auris causing vulvovaginal candidiasis in an immunocompetent patient: A case report 被引量:2
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作者 Lakshmi Krishnasamy Jayasankari Senthilganesh +1 位作者 Chitralekha Saikumar Paramasivam Nithyanand 《Asian Pacific Journal of Tropical Medicine》 SCIE CAS 2021年第2期94-96,共3页
Rationale:Candida auris is a potential emerging pathogen among Candida and causes serious health threats globally.Patient concerns:We reported a case of vulvovaginal candidiasis caused by Candida auris.A 26-year-old f... Rationale:Candida auris is a potential emerging pathogen among Candida and causes serious health threats globally.Patient concerns:We reported a case of vulvovaginal candidiasis caused by Candida auris.A 26-year-old female presented with complaints of vaginal discharge,itching and low back pain.Diagnosis:High vaginal swab culture yielded Candida.The strain was confirmed as Candida auris by amplification and sequencing the internal transcribed spacer region.Antifungal susceptibility testing revealed that the isolate was resistant to fluconazole,amphotericin B and clotrimazole and susceptible to ketoconazole and nystatin.The isolate also exhibited biofilm forming ability.Interventions:Her symptoms did not subside with initial management with fluconazole and clotrimazole.Later,she was started on ketoconazole therapy.The patient responded well to ketoconazole.Outcome and lessons:To the best of our knowledge,this is the first report about the presence of a drug resistant biofilm forming Candida auris strain isolated from a vaginal swab sample from Chennai area.Biofilm forming ability might contribute to its drug resistance.Nucleic acid analysis helps in rapid and accurate identification of such rare species. 展开更多
关键词 Candida auris Resistance BIOFILM Scanning electron microscopy
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Epidemiology, Clinical Features and Antifungal Resistance Profile of Candida auris in Africa: Systematic Review
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作者 Isidore Wendkièta Yerbanga Seydou Nakanabo Diallo +8 位作者 Toussaint Rouamba Delwendé Florence Ouedraogo Katrien Lagrou Rita Oladele Jean-Pierre Gangneux Olivier Denis Hector Rodriguez-Villalobos Isabel Montesinos Sanata Bamba 《Journal of Biosciences and Medicines》 2024年第1期126-149,共24页
Candida auris since it discovery in 2009 is becoming a severe threat to human health due to its very quickly spread, its worldwide high resistance to systemic antifungal drugs. In resource-constrained settings where s... Candida auris since it discovery in 2009 is becoming a severe threat to human health due to its very quickly spread, its worldwide high resistance to systemic antifungal drugs. In resource-constrained settings where several conditions are met for its emergence and spread, this worrisome fungus could cause large hospital and/or community-based outbreaks. This review aimed to summarize the available data on C. auris in Africa focusing on its epidemiology and antifungal resistance profile. Major databases were searched for articles on the epidemiology and antifungal resistance profile of C. auris in Africa. Out of 2,521 articles identified 22 met the inclusion criteria. In Africa, nearly 89% of African countries have no published data on C. auris. The prevalence of C. auris in Africa was 8.74%. The case fatality rate of C. auris infection in Africa was 39.46%. The main C. auris risk factors reported in Africa were cardiovascular disease, renal failure, diabetes, HIV, recent intake of antimicrobial drugs, ICU admissions, surgery, hemodialysis, parenteral nutrition and indwelling devices. Four phylogenetic clades were reported in Africa, namely clades I, II, III and IV. Candida auris showed a pan-African very high resistance rate to fluconazole, moderate resistance to amphotericin B, and high susceptibility to echinocandins. Finally, C. auris clade-specific mutations were observed within the ERG2, ERG3, ERG9, ERG11, FKS1, TAC1b and MRR1 genes in Africa. This systematic review showed the presence of C. auris in the African continent and a worrying unavailability of data on this resilient fungus in most African countries. 展开更多
关键词 AFRICA Antifungal Resistance Candida auris Clinical Features Phylogenetic Clades
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Study of the Frequency of Superficial Candidiasis at the Fann National Hospital: Search for Candida auris
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作者 Carole Pab Minlekib Doudou Sow +11 位作者 Isaac Akhenaton Manga Mamadou Dia Marie Pierre Fatou Diouf Aminata Lam Cheikh Binetou Fall Souleye Lelo Magatte Ndiaye Khadim Sylla Jean Louis Abdourahim Ndiaye Roger Clement Kouly Tine Thèrèse Dieng Babacar Faye 《Advances in Infectious Diseases》 2023年第4期536-549,共14页
Background: Superficial candidiasis is a very frequent opportunistic disease caused by yeasts of the genus Candida. Among Candida types, some, such as Candida auris, have developed resistance to several antifungal age... Background: Superficial candidiasis is a very frequent opportunistic disease caused by yeasts of the genus Candida. Among Candida types, some, such as Candida auris, have developed resistance to several antifungal agents. The objective of this study was to determine the hospital frequency of superficial candidiasis diagnosed at the CHU Fann and to investigate the presence of C. auris among the identified Candida strains. Methods: A cross-sectional study was conducted from February to June 2019. It involved all patients received at the Parasitology-Mycology laboratory of the CHU of Fann for suspected superficial candidiasis. Nails, skin, and vaginal specimens were subjected to direct examination and culture to identify yeasts of the genus Candida. The Candida strains were then tested by molecular biology targeting the specific C. auris ITS2 region. Results: A total of 1196 patients were examined. One thousand two hundred and five specimens (1205) were collected, including 1042 vaginal specimens, 92 nail specimens, and 71 skin specimens. Superficial candidiasis was diagnosed in 408 patients (37%). Women (34.52%) and patients under 30 years of age (39.60%) were the most affected. Yeasts of the genus Candida were found in 411 specimens (349 vaginal swabs, 36 nail fragments, and 26 skin flakes) by routine mycological techniques. The Candida albicans complex (C. albicans, C. dubliniensis, and C. africana) represented 75.91% of the Candida strains isolated. Molecular biology did not identify C. auris. Conclusion: Superficial candidiasis remains very common in hospitals in Senegal. Candida auris was not found in our study. Due to its rapid spread, surveillance is necessary to prevent epidemics in our hospitals. 展开更多
关键词 Superficial Candidiasis C. auris FREQUENCY Senegal
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One Step Multiplex PCR for Identification of Candida haemulonii complex and Candia auris
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作者 Mana Fuchigami Osamu Tsuzukibashi +12 位作者 Akira Fukatsu Koji Umezawa Sachiyo Hayashi Yuji Takahashi Hiroshi Yamamoto Chiaki Komine Mio Hagiwara-Hamano Yukiko Iizuka Satoshi Uchibori Masanobu Wakami Hiroshi Murakami Taira Kobayashi Masahiko Fukumoto 《Advances in Microbiology》 2023年第12期602-613,共12页
Purpose: Recently, Candida haemulonii complex (Candida haemulonii, Candida duobushaemulonii and Candida haemulonii var. vulnera) and two genetically close species (Candida pseudohaemulonii and Candida auris) have emer... Purpose: Recently, Candida haemulonii complex (Candida haemulonii, Candida duobushaemulonii and Candida haemulonii var. vulnera) and two genetically close species (Candida pseudohaemulonii and Candida auris) have emerged as an opportunistic fungal pathogen associated with various infectious diseases of humans, and most of those isolates have displayed antifungal resistance. Because it is difficult to differentiate these microorganisms by a current technique, unfortunately, it is important to establish a method for identifying them accurately. The purpose of the present study was to design species-specific primers in order to identify and detect C. auris, C. pseudohaemulonii, and C. haemulonii complex, i.e. , C. haemulonii, C. duobushaemulonii and C. haemulonii var. vulnera using a multiplex PCR. Methods: Polymerase chain reaction (PCR) primers were designed based on partial sequences of the 26S rRNA, 18S rRNA, and RPB1 genes and ITS region of five Candida species. Results: The multiplex PCR method developed in this study was able to distinguish five Candida species clearly. Conclusion: Our developed one-step multiplex PCR method is accurate, specific, cost-effective, time-saving, and works without requiring DNA extraction. 展开更多
关键词 Genus Candida Candida haemulonii complex Multiplex PCR Candida auris
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Candida auris Induces Phagocytosis,Reactive Oxygen Species Production,and Inflammation Through TLR2,TLR4,and Dectin-1-Dependent Signaling in Macrophages
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作者 Zhi-Min Duan Yan-Zhi He +3 位作者 Jia-Ning Wang Xu Chen Qing Chen Min Li 《International Journal of Dermatology and Venereology》 2025年第1期11-21,共11页
Objective:Candida auris(C.auris)is an important fungal pathogen with high rates of transmissibility,mortality,and drug resistance.However,studies on its pathogenicity,host-pathogen interactions,and macrophage immune r... Objective:Candida auris(C.auris)is an important fungal pathogen with high rates of transmissibility,mortality,and drug resistance.However,studies on its pathogenicity,host-pathogen interactions,and macrophage immune responses against C.auris are still limited.This study compared the immune response induced by Candida albicans(C.albicans)and C.auris,and explored the inflammation mechanisms of macrophages induced by C.auris.Methods:We used bone marrow derived macrophages(BMDMs)from mouse and peripheral blood mononuclear cells(PBMCs)from human being as the cell model.Flow cytometry was used to compare the phagocytosis rates of C.albicans and C.auris by BMDMs and PBMCs,as well as the differences in reactive oxygen species(ROS)release levels.Quantitative real-time PCR was used to compare the differences in the expression levels of interleukin-6(IL-6),tumor necrosis factor-α(TNF-α),and IL-1β.After BMDMs were stimulated with different concentrations of C.auris for various durations,quantitative real-time PCR was used to detect the changes in the expression levels of IL-6,TNF-α,and IL-1β,and ELISA was employed to measure the secretion levels of IL-6,TNF-α,and IL-1β.After co-culturing C.auris with BMDMs for 30 minutes,western blotting was used to detect the phosphorylation levels of Syk,IκBα,and ERK.Laser confocal microscopy was used to observe the nuclear translocation of NF-κB p65,and flow cytometry was utilized to detect the expression of Toll-like receptor 2(TLR2),TLR4,and Dectin-1 on BMDMs.BMDMs were pre-treated with TLR4 receptor inhibitor(TAK-242),TLR2 receptor inhibitor(C29),and Syk inhibitor(piceatannol)for 1 hour respectively.After BMDMs were stimulated with C.auris,flow cytometry was used to detect ROS and phagocytosis rates,and quantitative real-time PCR and ELISA were used to detect the expression levels of IL-6 and TNF-αmRNA and protein secretion.The t test or one-way analysis of variance was used for statistical analysis.Results:Macrophages showed a lower phagocytosis rate(P<0.01 for BMDMs;P<0.001 for PBMCs),ROS production(P<0.05),and expression of proinflammatory cytokines like IL-6(P<0.05),TNF-α(P<0.01)and IL-1β(P<0.05)against C.auris when compared with C.albicans.BMDMs were stimulated with C.auris at different concentrations C.auris(BMDMs:C.auris=1:5,1:10,1:20)and for different durations(2,4,and 8 hours),it was found that the expression levels of IL-6 and TNF-αmRNA were positively correlated with the concentration and duration of C.auris stimulation.The protein levels of IL-6,TNF-α,and IL-1βin the supernatant were all significantly increased.Stimulation of BMDMs by C.auris can induce the phosphorylation of Syk,IκBα,and ERK,the nuclear translocation of NF-κB p65,as well as the expression of TLR2,TLR4,and Dectin-1.By pretreating BMDMs with the inhibitor of TLR4,TLR2,and Syk,we verified that the expression and secretion of IL-6,TNF-α,and IL-1βstimulated by C.auris depended on the activation of TLR2,TLR4,Dectin-1,and downstream signaling pathways.TLR2,TLR4,and Dectin-1 participated in the recognition and phagocytosis of C.auris.Dectin-1 was the most important receptor in mediating immune response,while TLR4 was the most critical receptor in influencing the inflammatory response.Conclusion:C.auris induced a lower level of phagocytosis,production of reactive oxygen species,and expression of inflammatory factors than C.albicans,and that TLR2,TLR4,and Dectin-1 played important roles in the induction of inflammation. 展开更多
关键词 Candida auris Candida albicans MACROPHAGES INFLAMMATION PHAGOCYTOSIS
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Genetic mutations across multiple pathways drive filamentous growth and virulence in the emerging fungal pathogen Candida auris
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作者 Chao Li Shuaihu Li +6 位作者 Qiushi Zheng Li Tao Jian Bing Zhangyue Guan Tianren Hu Haiqing Chu Guanghua Huang 《Science China(Life Sciences)》 2025年第8期2484-2486,共3页
Dear Editor,Pathogenic fungi often undergo rapid morphological transitions to adapt to dynamic environments during infections and in natural habitats(Biswas et al.,2007;Prasad and Tippana,2023).These phenotypic transi... Dear Editor,Pathogenic fungi often undergo rapid morphological transitions to adapt to dynamic environments during infections and in natural habitats(Biswas et al.,2007;Prasad and Tippana,2023).These phenotypic transitions are primarily driven by environmental cues through nongenetic alterations,including epigenetic,transcriptional,and post-transcriptional modifications(Biswas et al.,2007). 展开更多
关键词 genetic mutations VIRULENCE morphological transitions filamentous growth phenotypic transitions environmental cues nongenetic alterationsincluding Candida auris
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新型耳念珠菌显色培养基诊断效能评价
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作者 杨欣怡 陈新飞 +16 位作者 李进 张晗 王擎 邓嫦姿 孙自镛 陈中举 郝巧歆 刘振嘉 程斌 汪自然 戴榕辰 黄雨妍 朱蕙卿 刘菲怡 赵逸滢 徐英春 肖盟 《中国感染与化疗杂志》 北大核心 2026年第1期61-71,共11页
目的 评价一种国产新型耳念珠菌显色培养基的诊断效能。方法 使用了184株念珠菌,包括5株标准菌株、65株耳念珠菌、16株5种希木龙念珠菌复合体菌株、98株14种其他念珠菌临床株。使用国产耳念珠菌显色培养基(ATAU)进行菌种鉴定实验,以基... 目的 评价一种国产新型耳念珠菌显色培养基的诊断效能。方法 使用了184株念珠菌,包括5株标准菌株、65株耳念珠菌、16株5种希木龙念珠菌复合体菌株、98株14种其他念珠菌临床株。使用国产耳念珠菌显色培养基(ATAU)进行菌种鉴定实验,以基质辅助激光解吸电离飞行时间质谱仪及核糖体DNA内转录间隔区分子测序为金标准进行诊断效能评价。此外,比较了ATAU与进口传统念珠菌显色琼脂培养基(CRCA)对常见念珠菌诊断效能的一致性,以及与进口新型耳念珠菌显色琼脂培养基(CRAU)对耳念珠菌-希木龙念珠菌复合体菌种鉴定能力的差异。结果 在35℃48 h培养条件下,与金标准鉴定结果相比,ATAU对耳念珠菌鉴定灵敏度为100%、特异度为97.4%、整体符合率98.3%。其中同属耳念珠菌-希木龙念珠菌复合体的1株东南亚念珠菌会被错误鉴定为耳念珠菌;另外假希木龙念珠菌的菌株虽呈现与耳念珠菌相似的颜色特征,但在35℃的培养温度下生长慢,所以可以进行区分;而在30℃下,亚希木龙念珠菌与希木龙念珠菌难以与耳念珠菌区分。此外,1株似平滑念珠菌(1/10)、1株近平滑念珠菌(1/10)被错误鉴定为耳念珠菌。ATAU与CRCA对白念珠菌、克柔念珠菌鉴定的灵敏度和特异度均为100%,二者一致率为100%;对热带念珠菌鉴定的灵敏度均为90.0%,特异度分别为100%、99.4%,两者都会漏检同一株热带念珠菌,但1株链状念珠菌(1/7)在CRCA上会错误鉴定为热带念珠菌;对光滑念珠菌鉴定的灵敏度均为100%,CRCA鉴定特异度为100%,但ATAU鉴定特异度为99.4%,原因是存在1株拟平滑念珠菌(1/10)会被错误鉴定。ATAU与CRAU均能准确检出耳念珠菌,对希木龙念珠菌复合体以及在ATAU上易错误鉴定的菌株的鉴定能力相似,对光滑念珠菌的鉴定特异性变低。结论 ATAU对耳念珠菌及临床常见念珠菌(白念珠菌、热带念珠菌、光滑念珠菌、克柔念珠菌)均有良好的诊断效能,与金标准的鉴定符合率均大于97%,特别针对耳念珠菌的灵敏度达到100%。该显色培养基适用于耳念珠菌的院感筛查及临床常见念珠菌的初步鉴定,为保证更为准确的报告,可辅以质谱鉴定的方法。 展开更多
关键词 耳念珠菌 念珠菌 显色培养基 鉴定 诊断效能
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Mathematical analysis of a Candida auris nosocomial infection model on the effects of misidentification in infection transmission
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作者 R.Lavanya U.K.Shyni 《International Journal of Biomathematics》 SCIE 2023年第2期257-274,共18页
The aim of this research paper is to model the effects of misidentification in the transmissiondynamics of the super yeast, Candida auris (or C. auris), among patients receivingtreatment in the Intensive Care Units (I... The aim of this research paper is to model the effects of misidentification in the transmissiondynamics of the super yeast, Candida auris (or C. auris), among patients receivingtreatment in the Intensive Care Units (ICUs). The mathematical analysis is carried outby obtaining the reproduction number of the C. auris model using the next generationmatrix and utilizing it as a threshold value to establish the local and global stabilityproperties at the points of equilibria. The numerical investigations carried out in thispaper establish the outcomes of the effect of variations in the values of important parameterson the dynamics of C. auris colonization and infections in the health care settings.The corresponding results from the numerical simulations are illustrated graphically. 展开更多
关键词 Mathematical modeling Candida auris nosocomial infections local stability global stability numerical simulation
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Clinical characteristics and risk factors for mortality in Candida auris infections
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作者 Kang Li Xin Liu +7 位作者 Danfeng Liu Yuqi Zhi Chang Dong Pengrui Sun Yueming Dong Hongfang Pan Yuxiang Zhang Hong Lei 《iLABMED》 2024年第2期79-87,共9页
Background:Candida auris infections pose a threat to public health,necessitating increased awareness in China.This study aimed to analyze the strains of C.auris,assess the infection status,and investigate clinical cha... Background:Candida auris infections pose a threat to public health,necessitating increased awareness in China.This study aimed to analyze the strains of C.auris,assess the infection status,and investigate clinical characteristics and risk factors for mortality.Methods:A retrospective analysis was conducted on 18 patients with Candida auris infection.We focused on evaluating basic characteristics,strain sources,and antibacterial susceptibility test results.Statistical methods were used to determine clinical features and identify risk factors for death.Results:The strain type,composition ratio,and specimen source of C.auris were not associated with mortality.Neither the infection index nor the length of hospitalization showed an association with the prognosis.However,significant risk factors for mortality included cerebral infarction,cardiac disease,renal dysfunction,hypoproteinemia,and anemia(all p<0.05).Conclusions:Cerebral infarction,cardiac disease,renal dysfunction,hypoproteinemia,and anemia are significant risk factors for death in C.auris infections.These findings indicate the importance of recognizing and addressing these factors in the clinical management of C.auris infection. 展开更多
关键词 Candida auris clinical characteristic antimicrobial susceptibility test risk factor
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小儿解表颗粒治疗小儿AURI的临床疗效分析
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作者 汤婷婷 任薇 《按摩与康复医学》 2017年第16期51-52,共2页
目的:通过观察治疗前后体温及伴随证候的变化,评价小儿解热颗粒对小儿AURI的退热作用及综合疗效。方法:将收治的符合纳入标准的200例急性上呼吸道感染患儿随机分为治疗组与对照组各100例,治疗组口服小儿解表颗粒,对照组使用利巴韦林颗... 目的:通过观察治疗前后体温及伴随证候的变化,评价小儿解热颗粒对小儿AURI的退热作用及综合疗效。方法:将收治的符合纳入标准的200例急性上呼吸道感染患儿随机分为治疗组与对照组各100例,治疗组口服小儿解表颗粒,对照组使用利巴韦林颗粒进行治疗,7天为1个疗程,患儿最少坚持服用1个疗程,观察两组临床疗效。结果:试验组退热时间(t=21.51,P<0.05)、鼻塞流涕好转时间(t=18.33,P<0.05)、咽痛消退时间(t=16.71,P<0.05)、止咳缓解时间(t=19.84,P<0.05)均短于对照组,且未发现明显不良反应。结论:小儿解表颗粒退热作用稳定持久,且能有效改善鼻塞流涕、咽喉肿痛、止咳等临床症状,无不良反应,临床作用优于常规西药利巴韦林颗粒。 展开更多
关键词 小儿急性上呼吸道感染(auri) 小儿解表颗粒 临床疗效
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苦参碱对耳念珠菌生物膜的抑制作用 被引量:1
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作者 王龙海 王业梅 +4 位作者 吴惠 吴大强 汪天明 汪长中 李璨 《微生物学报》 北大核心 2025年第10期4700-4713,共14页
耳念珠菌(Candida auris)作为一种多重耐药真菌,其生物膜形成是导致临床感染难治性的关键因素,目前针对其生物膜的有效干预手段仍较为匮乏。【目的】探讨中药单体苦参碱(matrine,MT)对C.auris的抗菌活性及生物膜抑制机制。【方法】采用... 耳念珠菌(Candida auris)作为一种多重耐药真菌,其生物膜形成是导致临床感染难治性的关键因素,目前针对其生物膜的有效干预手段仍较为匮乏。【目的】探讨中药单体苦参碱(matrine,MT)对C.auris的抗菌活性及生物膜抑制机制。【方法】采用微量稀释法测定MT对C.auris的最小抑菌浓度(minimum inhibitory concentration,MIC)、最小杀菌浓度(minimum fungicidal concentration,MFC)和最小生物膜抑制浓度(sessile minimum inhibitory concentration,SMIC);运用平板法观察MT干预下C.auris的时间生长曲线和菌落形态;利用水解酶法测定MT对C.auris生物膜水解酶活性的变化;通过水-烃两相法观察MT对C.auris生物膜细胞表面疏水性的变化;采用XTT法、结晶紫法和激光共聚焦扫描显微镜(CLSM)观察MT对C.auris生物膜代谢活力及结构的影响;使用DAPI染色法检测MT对生物膜状态下C.auris细胞核的变化;借助大蜡螟感染模型观察机体在C.auris感染时MT的潜在保护作用。【结果】MT对C.auris的MIC为128μg/mL,MFC和SMIC均为512μg/mL;其作用机制主要是通过降低C.auris细胞表面疏水性抑制生物膜成熟结构的形成,同时显著降低C.auris的代谢活力并诱导细胞核形态异常,最终抑制C.auris增殖;大蜡螟实验进一步证实MT可减轻C.auris的侵袭损伤。【结论】MT对C.auris具有显著的抗菌作用,并能有效抑制其生物膜的形成,为临床应对多重耐药C.auris感染提供了新型候选药物及潜在作用靶点。 展开更多
关键词 耳念珠菌 苦参碱 生物膜
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重症监护病房耳念珠菌医院感染的调查与防控 被引量:2
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作者 胡佳佳 林煜森 +2 位作者 吴本权 石云锋 王艳红 《中国真菌学杂志》 2025年第2期120-124,共5页
目的对某教学医院内科重症监护室发生的一起耳念珠菌医院感染事件进行调查分析。方法2022年9月某教学医院内科重症监护室一位患者血培养标本检出耳念珠菌。立即对患者的体表部位及其周围环境、物表进行采样,采用基质辅助激光解吸电离飞... 目的对某教学医院内科重症监护室发生的一起耳念珠菌医院感染事件进行调查分析。方法2022年9月某教学医院内科重症监护室一位患者血培养标本检出耳念珠菌。立即对患者的体表部位及其周围环境、物表进行采样,采用基质辅助激光解吸电离飞行时间质谱技术进行分析。对患者采取接触隔离,洗必泰每日擦拭,对医护人员进行耳念珠菌相关知识培训,加强手卫生,加强病区环境清洁消毒,采用主动筛查的方法评估防控效果。结果患者的痰液、粪便、头皮、腋窝、腹股沟及床栏、左右吊塔台面均检测出耳念珠菌。经采取防控措施后,患者出院前体表部位及周围物体表面、环境未检出耳念珠菌。对病房的物表、环境继续每个季度一次的主动筛查,此后半年内均未检出耳念珠菌。结论医护人员需提高对耳念珠菌的认识,及早识别并积极有效落实防控措施,可避免耳念珠菌感染暴发的发生。 展开更多
关键词 耳念珠菌 医院感染 重症监护病房 预防控制
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非重症监护病房患者耳念珠菌定植的分离鉴定及防控策略 被引量:2
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作者 徐丹 熊键 胡志敏 《中国感染控制杂志》 北大核心 2025年第5期602-608,共7页
目的 调查某院非重症监护病房患者耳念珠菌定植及环境污染情况,评价该病区感染防控措施及其效果。方法 2024年3月某院康复医学科病房收治1例双下肢截瘫患者,导尿管和尿培养均检出耳念珠菌,立即对该患者单间隔离,暂停所在病区患者转入及... 目的 调查某院非重症监护病房患者耳念珠菌定植及环境污染情况,评价该病区感染防控措施及其效果。方法 2024年3月某院康复医学科病房收治1例双下肢截瘫患者,导尿管和尿培养均检出耳念珠菌,立即对该患者单间隔离,暂停所在病区患者转入及转出,并对病房环境及进出病房的陪护家属、医生、护士和该病区同一时间住院的患者采样进行真菌培养,使用质谱和分子生物学技术进行菌种鉴定和聚类分析。对患者采取接触隔离措施,严格执行手卫生,使用含有效氯1 000 mg/L的次氯酸钠消毒,2%氯己定去定植,以及对患者接触的物品采取终末消毒等防控措施。出院后继续执行上述防控措施并定期复查患者耳念珠菌定植情况。结果 从患者尿、导尿管、腹股沟拭子、肛周拭子和床架边缘拭子分离5株耳念珠菌。蛋白质谱聚类分析显示,5株耳念珠菌为同一来源。此分离株对氟康唑和两性霉素B均耐药,对棘白菌素类抗真菌药物均敏感。病区其他人员手部、腋窝和腹股沟处皮肤拭子均未分离出耳念珠菌。经去定植及环境消毒等措施后,第2轮复查采样培养均无耳念珠菌生长。结论 非重症监护病房需根据入院患者特点,从转入初筛、接触预防、物体表面微生物学监测、消除定植、环境消毒及社区管理等多方面入手,积极采取主动防控措施。手卫生、接触隔离和终末消毒是阻断耳念珠菌传播的重要手段。 展开更多
关键词 耳念珠菌 定植 泌尿道 医院感染 主动筛查 去定植
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12例耳假丝酵母检出患者临床及流行病学特征
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作者 张红芳 胡继梅 +2 位作者 陈名霞 闫丽 孔庆芳 《中华医院感染学杂志》 北大核心 2025年第9期1417-1422,共6页
目的 分析某三甲医院检出耳假丝酵母患者的临床特征,为耳假丝酵母医院感染防控提供参考。方法 回顾性收集2023年9月-2024年6月东南大学附属中大医院检出耳假丝酵母标本来源、科室分布及其耐药性等,总结检出耳假丝酵母患者的临床特征,流... 目的 分析某三甲医院检出耳假丝酵母患者的临床特征,为耳假丝酵母医院感染防控提供参考。方法 回顾性收集2023年9月-2024年6月东南大学附属中大医院检出耳假丝酵母标本来源、科室分布及其耐药性等,总结检出耳假丝酵母患者的临床特征,流行病学调查分析耳假丝酵母院内传播的可能性,并提出相应的防控改进措施。结果 12例耳假丝酵母检出患者中,男性10例,女性2例,年龄21~92岁,大部分患者合并多种基础疾病,存在反复住院史,并有气管切开、尿管、胃管或静动脉置管等多种侵入性操作史,同时合并其他多重耐药菌、真菌检出及多种抗菌药物的使用情况。12例耳假丝酵母检出患者共分离出16株耳假丝酵母,其中以尿标本为主,占62.50%(10/16),其次为痰标本,占18.75%(3/16),深静脉导管、组织活检物和伤口拭子标本各占6.25%(1/16)。16株耳假丝酵母对氟康唑均耐药,对卡泊芬净均敏感,4株对两性霉素B耐药。耳假丝酵母感染2例,分别为肺部感染和尿路感染,感染率为16.67%,均治愈。定植10例,定植率为83.33%。流行病学调查结果显示,患者#8检出的耳假丝酵母可能源自患者#4,分析原因为患者#4耳假丝酵母外院带入不知情及标准预防措施不到位。结论 耳假丝酵母检出患者多具有复杂医疗背景,医院目前检出的耳假丝酵母虽仍以定植为主,但相关部门仍需强化防控措施,防止耳假丝酵母的传播扩散,特别是针对外来病原体的早期识别和管理。 展开更多
关键词 耳假丝酵母 临床表现 耐药性 防控措施 流行病学
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Mandimycin:A phospholipid-targeting natural polyene macrolideovercoming multidrug resistance in invasive fungal infections
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作者 Gizachew Mulugeta Manahelohe Xin-Ying Zhao +5 位作者 Jie Gao Zhaoxia Chen Bing Jin Qiang Sha Yu-Cheng Gu Ming-Zhi Zhang 《Advanced Agrochem》 2025年第3期169-172,共4页
Developing novel anti-infective drugs is essential to combat antimicrobial resistance,address emerging pathogens,and safeguard global health against evolving infectious threats.A recent publication in the esteemed jou... Developing novel anti-infective drugs is essential to combat antimicrobial resistance,address emerging pathogens,and safeguard global health against evolving infectious threats.A recent publication in the esteemed journal Nature by Qisen Deng et al.reported on the comprehensive evaluation of the therapeutic efficacy of mandimycin against multidrug-resistant(MDR)fungal pathogens.The polyene macrolide antifungal antibiotic,mandimycin,was discovered using a phylogeny-guided natural-product discovery platform.Authors utilized various in vivo mouse models such as systemic and soft-tissue infections to assess the antifungal activity of mandimycin.The efficacy was measured by quantifying the fungal burden in major organs and assessing survival rates.In systemic infections,mandimycin demonstrated significant dose-dependent antifungal efficacy,as compared to amphotericin B,particularly in cases where the latter was ineffective against MDR C.auris.Furthermore,mandimycin showed a favorable safety profile,with low toxicity and no observed side effects at effective doses.The study's findings contribute valuable insights into the potential of mandimycin as a novel antifungal agent,offering hope for improved treatment options against challenging fungal infections.The results pave the way for further research and clinical applications in the fight against antifungal resistance. 展开更多
关键词 Multidrug resistance Mandimycin Phospholipid targeting Phylogeny-guided discovery Candida auris
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耳念珠菌研究进展 被引量:1
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作者 曲锐 卢鸿 +2 位作者 贺云霞 刘昕 哈斯朝鲁 《中国抗生素杂志》 北大核心 2025年第8期885-893,共9页
耳念珠菌(Candida auris,C.auris)是近年来发现的一种新"超级真菌",自2009年首次分离以来,迅速在世界范围内广泛传播。耳念珠菌传染性强,致死率可高达60%,且对多种抗真菌药物耐药。本文就耳念珠菌病原学特点、临床表现、流行... 耳念珠菌(Candida auris,C.auris)是近年来发现的一种新"超级真菌",自2009年首次分离以来,迅速在世界范围内广泛传播。耳念珠菌传染性强,致死率可高达60%,且对多种抗真菌药物耐药。本文就耳念珠菌病原学特点、临床表现、流行概况、致病机制和治疗进展进行综述。 展开更多
关键词 耳念珠菌 流行病学 致病机制 临床表现 耐药机制 抗真菌药物
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从耳念珠菌流行谈中国真菌病防治体系建设 被引量:2
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作者 孙怀远 冯佳佳 +3 位作者 孔维华 林丽开 徐英春 陈楠 《华西医学》 2025年第3期337-342,共6页
耳念珠菌是一种新发多重耐药真菌,因其强耐药性和院内传播特性,已成为全球公共卫生领域的重大威胁。该文梳理了耳念珠菌的全球流行趋势及现有防治体系现状,重点从病原体流行病学特征、国内外流行态势、防控体系现状和防治网络建设几个... 耳念珠菌是一种新发多重耐药真菌,因其强耐药性和院内传播特性,已成为全球公共卫生领域的重大威胁。该文梳理了耳念珠菌的全球流行趋势及现有防治体系现状,重点从病原体流行病学特征、国内外流行态势、防控体系现状和防治网络建设几个方面展开论述。在耳念珠菌国际流行的挑战下,中国真菌病防治体系建设在现有基础上,应朝着更加系统化、科学化的方向迈进,通过整合医疗机构、疾控机构和科研院所等各方资源,联合多学科知识技术,建立起多层级联防联控机制,完善监测、防控、诊疗体系。未来,我国真菌病防治体系建设需要进一步加强人才培养、完善监测网络、推进技术创新与应用,构建起全方位、多层次的现代化防治体系。 展开更多
关键词 耳念珠菌 真菌病 防治体系建设
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某综合医院耳念珠菌感染/定植患者的临床特征及防控
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作者 陈美恋 王欣心 +2 位作者 田园 郝云霄 匡季秋 《中国感染控制杂志》 北大核心 2025年第1期99-104,共6页
目的探讨耳念珠菌感染/定植患者临床特点及防控策略。方法分析2023年9月—2024年3月某综合医院检出耳念珠菌患者的临床特征及防控措施,评估防控措施的效果。结果共9例患者检出耳念珠菌,标本来源为尿5例(55.56%),痰3例(33.33%),腹腔引流... 目的探讨耳念珠菌感染/定植患者临床特点及防控策略。方法分析2023年9月—2024年3月某综合医院检出耳念珠菌患者的临床特征及防控措施,评估防控措施的效果。结果共9例患者检出耳念珠菌,标本来源为尿5例(55.56%),痰3例(33.33%),腹腔引流液1例(11.11%);社区感染5例(55.56%),社区定植3例(33.33%),医院定植1例(11.11%);死亡5例(55.56%),出院3例(33.33%),转院1例(11.11%)。通过培训、纳入预警、单间隔离、个人防护、手卫生、环境清洁消毒并加强过程采样督促、督促送检和排查、终末消毒并采样合格方收治新患者等措施,患者环境采样均未检出耳念珠菌,未发生医院交叉传播。结论重视耳念珠菌感染防控措施的落实,能有效控制医院感染的发生和交叉传播。 展开更多
关键词 耳念珠菌 临床特征 感染 定植 防控措施
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