1.Fungal keratitis caused by Lasiodiplodia theobromae:a case report and literature review
Ying CHEN ; Hong LI ; Huiyu WANG ; Guangding HUANG ; Qiongying WANG ; Xiaofang LI
Chinese Journal of Infection Control 2025;24(5):618-624
Objective To report the diagnosis and treatment processes of a fungal keratitis case caused by Lasio-diplodia theobromae(L.theobromae),and enhance the diagnosis and treatment experience on fungal keratitis caused by this rare pathogen.Methods Corneal scraping specimen from a patient with fungal keratitis was collec-ted.Gram-staining and fluorescence staining were conducted on specimen,followed with direct microscopic observa-tion and isolation culture.The strain was identified by matrix-assisted laser desorption ionization time-of-flight mass spectrometry(MALDI-TOF MS)technology and targeted DNA sequencing.Antimicrobial susceptibility testing was conducted.Literatures were summarized and clinical data on fungal keratitis caused by this pathogen were sorted out.Results Septal fungal hyphae could be seen on the corneal scraping specimen microscopically.The strain was identified as L.theobromae by both MALDI-TOF MS and targeted DNA sequencing after culture.Antimicrobial susceptibility testing(microdilution method)showed that the minimal inhibitory concentrations(MICs)of ampho-tericin B,vorionazole,itraconazole,posaconazole,fluconazole,5-fluorocytosine,micafungin,caspofungin,and anidulafungin against this strain were 1,0.25,>8,0.25,>256,8,16,2,and 0.25 μg/mL,respectively.Pa-tient recovered well after antifungal treatment plan was adjusted according to antimicrobial susceptibility testing re-sults.Conclusion L.theobromae is a rare pathogen that causes fungal keratitis.Laboratory tests provide rapid mi-croscopic examination results,and take MALDI-TOF MS and targeted DNA sequencing identification techniques as effective means to detect rare pathogen.In vitro antimicrobial susceptibility testing result can provide reference for clinicians to correctly use antifungal agents for treatment of infection due to this pathogen.
2.Fungal keratitis caused by Lasiodiplodia theobromae:a case report and literature review
Ying CHEN ; Hong LI ; Huiyu WANG ; Guangding HUANG ; Qiongying WANG ; Xiaofang LI
Chinese Journal of Infection Control 2025;24(5):618-624
Objective To report the diagnosis and treatment processes of a fungal keratitis case caused by Lasio-diplodia theobromae(L.theobromae),and enhance the diagnosis and treatment experience on fungal keratitis caused by this rare pathogen.Methods Corneal scraping specimen from a patient with fungal keratitis was collec-ted.Gram-staining and fluorescence staining were conducted on specimen,followed with direct microscopic observa-tion and isolation culture.The strain was identified by matrix-assisted laser desorption ionization time-of-flight mass spectrometry(MALDI-TOF MS)technology and targeted DNA sequencing.Antimicrobial susceptibility testing was conducted.Literatures were summarized and clinical data on fungal keratitis caused by this pathogen were sorted out.Results Septal fungal hyphae could be seen on the corneal scraping specimen microscopically.The strain was identified as L.theobromae by both MALDI-TOF MS and targeted DNA sequencing after culture.Antimicrobial susceptibility testing(microdilution method)showed that the minimal inhibitory concentrations(MICs)of ampho-tericin B,vorionazole,itraconazole,posaconazole,fluconazole,5-fluorocytosine,micafungin,caspofungin,and anidulafungin against this strain were 1,0.25,>8,0.25,>256,8,16,2,and 0.25 μg/mL,respectively.Pa-tient recovered well after antifungal treatment plan was adjusted according to antimicrobial susceptibility testing re-sults.Conclusion L.theobromae is a rare pathogen that causes fungal keratitis.Laboratory tests provide rapid mi-croscopic examination results,and take MALDI-TOF MS and targeted DNA sequencing identification techniques as effective means to detect rare pathogen.In vitro antimicrobial susceptibility testing result can provide reference for clinicians to correctly use antifungal agents for treatment of infection due to this pathogen.
3.Study of correlation between serum vitamin D level and systemic sclerosis
Haishen HUANG ; Haitao LI ; Guangding TANG ; Weihe JIANG
International Journal of Laboratory Medicine 2014;(13):1747-1748
Objective To investigate the correlation between vitamin D and systemic sclerosis(SSc).Methods The serum vita-min D2,vitamin D3 and total vitamin D levels were detected in 56 outpatients and inpatients with SSc(SSc group)and 60 individuals of healthy physical examination(control group)from January 2009 to December 2013.The detection results combined with the clini-cal data were statistically analyzed.Results 3 kinds of vitamin D levels in the SSc group were lower,than control group in which the total vitamin D and vitamin D3 levels were significantly lower than those in the control group(P <0.05).Conclusion Maintai-ning the higher concentration of serum vitamin D may have the preventive effect on progressive SSc.

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