1.The future application of antifungal susceptibility testing
Chinese Journal of Laboratory Medicine 2001;0(01):-
The antifungal susceptibility testing is playing important roles which include: understanding the susceptibility of the fungus to the antifungal agents and monitoring the resistance during therapy.Our purpose in this editorial is to tell the readers the proper application of MIC detection;to emphasize the clinical relevance of the in vitro susceptibility,and especially,to introduce the recent clinical study data which give the detailed explanation on the clinical relevance of MIC.
2.A Brief Introduction to Several Novel Antifungal Drugs
Microbiology 1992;0(03):-
The introduction of lipid-formula Amphotericin B,Voriconazole,and Echinocandins,including Caspofungin and Micafungin,reflect the trend that the antifungal drugs are being developed along to a direction with high effect,broad spectrum,and low toxicity.These drugs undoubtedly provide novel useful approaches to the treatment of invasive fungal infections.Compared to the traditional antifungal drug,such as amphotericin B and Fluconazole,these drugs have the character of good effect and low adverse effect,which will be very important to prophylaxis and treatment for systemic fungal infections.The information concerning for these issues is being reviewed in this paper.
3.MicroRNA-215 is a potential prognostic marker for cervical cancer.
Hua, LIANG ; Yan, LI ; Ruo-yu, LUO ; Fu-jin, SHEN
Journal of Huazhong University of Science and Technology (Medical Sciences) 2014;34(2):207-12
Recently, microRNAs (miRNAs) have been shown to be involved in multiple biological pathways that can influence tumor progression and metastasis and they can serve as prognostic biomarkers in many cancers. The present study examined the prognostic significance of miR-215 in cervical cancer. The paraffin-embedded paired cervical scrape samples and tumor tissue samples from 302 patients with stage II cervical cancer were detected for the expression of miR-215 by using qRT-PCR. A miR-215-based classifier was established by using the Cox regression model. The prognostic and predictive accuracy of this classifier was determined in both the internal testing group of 138 patients, and the external independent group of 280 patients. Moreover, cervical cancer HeLa cells overexpressing miR-215 (HeLa-miR-215) were constructed and subcutaneously injected into the nude mice to examine the effect of miR-215 on tumor growth and metastasis in vivo. The results showed that the expression level of miR-215 was significantly higher in cervical cancer tissues than in paired normal tissues (P<0.0001). When patients were classified into high- and low-risk cancer progression groups according to miR-215 level, the 5-year disease-free survival in high- and low-risk groups were 43% (95% CI: 32.1-51.6) and 67% (95% CI: 48.6-77.3) (hazard ratio [HR] 2.02, 95% CI: 1.16-3.52; P=0.013) respectively. Moreover, the expression level of miR-215 was negatively associated with survival rate in patients at TNM stage T3 (HR: 3.317; 95% CI: 1.18-5.14, P=0.017) and TNM stage T4 (HR: 3.48; 95% CI: 1.49-4.45, P=0.008). Tumor volume in nude mice injected with HeLa-miR-215 cells was significantly larger than that in mice injected with control HeLa cells. It was concluded that the expression level of miR-215 is associated with cervical tumor progression and worse survival rate, suggesting that it may serve as a potential prognostic marker to identify patients at higher risk of recurrence.
5.Molecular Resistance Mechanisms of Candida albicans to Antifungal Agents
Jian-Jun QIAO ; Wei LIU ; Ruo-Yu LI ;
Microbiology 1992;0(02):-
In recent years,with the increasing of immunocompromised patients in clinical practice,invasive candidiasis has been increased accordingly. Although several antifungal drugs,including polyenes,azoles,5-flucytosine,and echinocandins,have been used widely to treat invasive candidiasis,the treatment failure that caused by the resistance of Candida albicans to these antifungal drugs have been reported widely. Here,we reviewed the molecular mechanisms of resistance to azoles,polyenes,5-flucytosine,and echinocandins,such that to provide an update on these issues.
6.High intensity focused ultrasound is treatment of 14 hepatic metastases from colorectal cancer
Yan SUN ; Yu ZHONG ; Qiang WU ; Ruo-Hua LI ;
Cancer Research and Clinic 2000;0(06):-
Objective To evaluate the clinical safety and efficacy of HIFU treatment of hepatic metastases from colorectal cancer.Methods 20 tumor lesions in 14 patients with hepatic metastases from colonectal cancer were treated with HIFU therapy.The vital signs,main organs'functions,examination of MRI and complications were observed.Results Vital signs of all the 14 patients were stable.The function of liver and kidney were normal and life quality were improved with elevation of Karnofsky in 5 patients.On MRI examination,the MRI signals of treating area of 20 tumor lesion in 14 patients decreased remarkably with disappearance of blood supply and a thin layer of edematous intensified zone was detected on the margin of lesion.6 patients were found to have cord-like burning scar on skin.Conclusion HIFU treatment is safe and effective in treatment of hepatic metastases from colorectal cancer.
7.Molecular cloning of HLA-B27 gene promoter and transcriptional activity detection in HeLa cells
Li-Ke ZHAO ; Jie-Ruo GU ; Deen YU ;
Chinese Journal of Rheumatology 2003;0(08):-
Objective To construct pGL4.14-1uc eukaryotic expression vector for HLA-B27 promoter gene and explore the activity regulation of this promoter in Hela cells.Methods The HLA-B27 gene promot- er(-419 bp~1 bp)was amplified by polymerase chain reaction and was cloned into pGL4.14-luc vector to construct eukaryotic expression vector pGL4.14/B27 pro-luc.The purified pGL4.14/B27 pro-luc was stablely transfected into HeLa cells and the activity of HLA-B27 gene promoter was detected by luminometer.Results About 432 bp gene fragment was amplified by PCR from genomie DNA and pGL4.14/B27 pro-luc vector was constructed successfully.The activity of HLA-B27 promoter was 1.67?0.20,1.79?0.71,2.94?0.68,1.98?0.45 in Hela stable cells after treated with TNF-?,IFN-?,IFN-?and IFN-?for 48 hours.Conclusion TNF-?. IFN-?,IFN-?and IFN-?can regulate the B27 promoter activity.The high specific activity of constructed HLA-B27 promoter eukaryotic expression vector may be a good method for further research.
8.Expression of Bcl-2 and Bax in renal tissues of patients with hepatitis B virus-associated glomerulonephritis
Li-Jing SUN ; Jian-Ping YU ; Wei-Jie YUAN ; Jing XU ; Guang YU ; Ruo-Lan CUI ;
Academic Journal of Second Military Medical University 1985;0(05):-
Objective:To investigate the expression of Bcl-2 and Bax in renal tissues of patients with hepatitis B virus- associated glomerulonephritis(HBV-GN).Methods:Twenty HBV-GN specimens with complete nephrology data and 10 normal renal specimens were randomly chosen for the present study.Cell apoptosis was detected by means of terminal deoxynucleotidyl transferase mediated d-UTP nick end labeling(TUNEL)and the apoptotic index was calculated;immunohistochemistry was used to detect the protein expression of Bax and Bcl-2.ResuLts:The apoptotic index in HBV-GN group was obviously higher than that of the control group;the apoptotic cells were mainly distributed in the proximal and distal renal tubules and the collecting duct epithelial cells,seldom seen in the glomerular cells.The expression of Bcl-2 in HBV-GN patients was predominately present in the renal tubular epithelia cells(positive in the plasma,membrane and nuclear);the expression of Bax was found in both glomerular cells and renal tubular cells,mainly in tubular epithelial cells,seldom seen in Bowman's capsule or glomerular mesangial region.Conclusion:Apoptosis in the kidney of HBV-GN patients mainly occurs in the renal tubular epithelial cells;expression of Bax and Bcl-2 is mainly in the renal tubular epithelial cells,suggesting that the injury of tubular interstitial damage may be one of the important factors for the development of HBV-GN.
9.Influence of prophylactic application of fluconazole on antifungal susceptibility to strains of Candida isolated from the patients with high risk of deep fungal infections
Jin YU ; Min ZHANG ; Ruo-Yu LI ; Wei-Lin XU ; Han-Yun REN ; Yi-Xin SONG ;
Chinese Journal of Laboratory Medicine 2001;0(01):-
8 ?g/ml were 7 strains in prophylactic treatment group and 3 strains in non-fluconazole prophylactic treatment group respectively.The two groups had significant difference (x~2=8.75,P
10.Therapy and Diagnosis of Phaeohyphomycosis of Central Nervons System
xing-zhi, CHANG ; jian - guo, LI ; ruo-yu, LI ; xin-hua, BAO ; zhe, WAN ; jiong, QIN
Journal of Applied Clinical Pediatrics 2003;0(10):-
Objective To explore the clinical characteristics ,diagnosis, treatment and prognosis of phaeohyphomycosis. Methods Clinical data were collected, including history, physical examination, cranial and spinal imaging. Brain biopsy was performed. Data of the pathology and incubation of brain tissue were analyzed. Responsiveness to treatment was followed up. Results A previously healthy three and half years old boy was presented to our unit, with a three- month history of recurrent headache, vomiting, progressive paraplegia accompanied by urinary continence and constipation. A computed tomogram scan and magnetic resonance imaging of the brain revealed multiple lesions located in the region of the parietal - occipital lobes, periventricular area and frontal lobe, with prominent surrounding edema and irregular peripheral enhancement of the mass after the administration of contrast materials. A cerebral biopsy was performed and the pathological report was cerebral phaeohyphomycosis. The culture of the tissue and cerebrospinal fluid grew a same fungus identified as exo-phiala dermatitidis. The patient's response to therapy was poor, the parents of the boy gave up therapy, and the boy died 1 month later. Conclusions Cerebral Phaeohyphomycosis caused by Exophiala dermatitidis is rare, but the most serious form of fungus infection. Pathology and incubation of the tissue are essential for diagnosis. There is no curative therapy and the prognosis is poor.