1.Surveillance of resistance to fluconazole and voriconazole in Candida isolates from 5 hospitals in China
De-Mei ZHU ; Ying-Yuan ZHANG ; Fu WANG ;
Chinese Journal of Infection and Chemotherapy 2007;0(01):-
Objective To investigate the situation and change of antifungal resistance in clinical Candida and other fungal iso- lates from 5 hospitals in diverse geographic region of China.Methods Antimicrobial susceptibility testing of 8 000 fungat iso- lates collected during 2001 and 2005 were carried out with 25?g fluconazole disk and 1?g voriconazole disk using disk diffusion method as recommend by CLSI/NCCLS M44-A.Disk test plates were automatically read and results were recoded with the BIOMIC Image Analysis System.The equivalent MICs were automatically calculated by the BIOMIC System software.Results The proportion of Candida atbicans and non-Candida albicans (e.g.Candida glabrata) in the total fungal isolates did not change significantly from 2001 to 2005.The susceptibility rate of C.albicans to fluconazole and vorieonazole were stable during 2001 and 2005.However, the resistance to fluconazole and voriconazole increased variably in C.glabrata and other non-Can- dida albicans fungal isolates during the same period.Conclusions The voriconazole demonstrated higher activity against all yeast species in comparison with fluconazole.The increasing resistance to fluconazole and voriconazole in non C.albicans fungal isolates including C.glabruta suggests the importance of surveillance of fungal resistance in Candida isolates.
2.Chinese twins both with aortic dissection.
Ning ZHU ; Da-yuan LOU ; Da-jun YUAN ; Xiao-mei WANG ; Dao-zi XIA
Chinese Medical Journal 2013;126(13):2595-2595
3.Endophytic Fungi from Four Plant Species: Their Isolation and Antitumor Activity
Li MIAO ; Yuan-Yuan WANG ; Lei ZHU ; Zheng-Jun WU ; Ru-Mei ZHOU ;
Microbiology 1992;0(06):-
We isolated 61 endophyte isolates from the bark of 4 plants, Ginkgo biloba L, Albizzia julibrissin Durazz, Ailanthus sltissima (Mill) Swingle and Melia azedarach L. At the test concentration of 200 ?g/mL, higher than 50% of antitumor activities were demonstrated with crude extracts from 45.9% of fungal culture in MTT assay. Six isolates, YX5, YX17, YX36, KL1, CC1 and CC5, still showed higher cytotoxicity at 50 ?g/mL. No isolates from A. julibrissin had inhibitory effect towards EC109 at the test concentration of 50 ?g/mL; while about 15.8% of isolates from G. biloba were active. IC50 of the extract from the most active isolate YX5 against EC109, HONE1 and HeLa were 18.3 ?g/mL, 3.6 ?g/mL and 6.5 ?g/mL, respectively. Our results indicate that endophytes from G. biloba could be regarded as a potent source of antitumor drugs.
4.Study of curative effect of combined therapy in the elderly patients with oral squamous-cell carcinoma
Mao-Chang YE ; Lai-Ping WANG ; Rong-Xin LI ; Zu-Wu ZHU ; Mei-Mei CHEN ; Ran-Gang KANG ; Yuan ZHOU
Chinese Journal of Geriatrics 2001;0(03):-
0.05).There was significant difference in the 3-year survival rate between A and C group. Conclusions The 3-year survival rate was dramatically increased with combined therapy mainly by cisplatin, the dose of 60~80mg is tolerant for the elderly aged above seventy years, and perioperation complications can be cured.
5.Comparative Study on Naotaifang Containing Serum and Plasma Proteomics (Peptide) by Proteomics
Guozuo WANG ; Huibin ZHU ; Mei YANG ; Yu ZHOU ; Ronghua QIAN ; Yaqiao YI ; Ziwei YUAN ; Jinwen GE
World Science and Technology-Modernization of Traditional Chinese Medicine 2013;(7):1505-1514
Through comparative study on Naotaifang containing serum and plasma proteomics (peptide), this article revealed differential proteins (peptides) in the Naotaifang. The characteristics of differential proteins were identified with mass spectrometry. It provides scientific evidences for the pharmacodynamic material basis and Chinese herbal medicine plasma pharmacological method development in the exploration of Naotaifang. A total of 20 healthy adult SD rats were randomly divided into the control group, Naotaifang treatment group according to their weights. Ten rats in each group. Intragastric administration of medication was given for seven consecutive days. Before surgery, rats were fed with water but without food. One hour after the last drug administration, 10% chloral hydrate was injected for intraperitoneal anesthesia. Blood was taken through the common carotid artery. Serum and plasma samples were made after blood was taken from each rat. Serum and plasma samples of five rats were randomly selected from each group. And the two-dimensional electrophoresis (2-DE) technique was used in the comparative study of serum pro-teomics (peptide). The 300 DPI scanning and PDQuest 7.3.0 were used in the analysis. The ESI-MS/MS was used to identify important differences in proteins and screen characteristic serum and plasma protein. The results showed that 20 differential proteins of 5 plasma samples were identified. There were 15 types of proteins expressing up-regulation and 5 types expressing down-regulation. Comparative analysis on the 2-DE gel pictures of Naotaifang containing serum, 19 differential proteins of 5 plasma samples were identified, among which 15 types of proteins express up-regulation and 4 down-regulation. Comparative analysis on the 2-DE gel pictures of Naotaifang containing serum and Naotaifang containing plasma showed that 24 differential proteins of 5 plasma samples were identified, among which 9 types of proteins express up-regulation and 15 down-regulation. The highly expressed proteins were selected to MALDI-TOF-MS between Naotaifang containing serum and Naotaifang containing plasma. There were six successful-ly identified proteins, which were inter-alpha trypsin inhibitor, heavy chain 3, group-specific component, comple-ment factor B, Receptor Complexed with A Heterodimeric Fc, isoform CRA-d, Transferrin. It was concluded that protein with obvious changes in the Naotaifang containing serum and plasma may be related with fibrinolysis and an-ticoagulant. These proteins are involved in angiogenesis, inflammation and other pathological regulations of physiolog-ical processes. They are of great significance in the study of effective target and its signal transduction pathway of Naotaifang.
6.The value of serum ICTP in the early diagnosis, efficacy and prognosis of tumor bone metastasis
Jianhong LU ; Guojun CHEN ; Changlin DONG ; Shunbin ZHU ; Qi CHEN ; Mei YUAN ; Yijun JIN
Clinical Medicine of China 2010;26(7):679-682
Objective To evaluate the serum pyridinoline cross-linked carboxyteminal telopeptide of type Ⅰ collagen ( ICTP) in the early diagnosis potency,efficacy and prognosis of tumor bone metastasis. Methods According to emission computed tomography(ECT) ,MRI and X-ray results,336 cases of tumor were divided into higher ICTP (5. 98 ± 1. 95μg/L ) than normal values. Twenty-two cases were identified bone metastasis through PET/CT examination. 26 cases were identified bone the effective cases decreased from( 13. 22 ± 4.65)μg/L (before treatment) to (7. 18 ±3. 54)μg/L (after treatment) (t = 10. 076,P = 0. 000). Conclusions Serum ICTP is helpful for the early diagnosis, screening and efficacy evaluation of tumor bone metastasis. It could be used for monitoring the occurrence of tumor bone metastasis and its prognosis.
8.Advances in research of pharmacological effects and formulation studies of linalool.
Dong-mei JIANG ; Yuan ZHU ; Jiang-nan YU ; Xi-ming XU
China Journal of Chinese Materia Medica 2015;40(18):3530-3533
Linalool, as a major volatile compound, is widely distributed in natural plant essential oil. In addition, it can also be artificially synthesized. Linalool is used frequently as an important ingredient of perfumes and household detergents. It is still employed in food flavor and industries. Besides, linalool has some positive effect on healthcare. Many studies have showed that linalool exhibited a variety of pharmacological activities, including analgesic, anxiolytic, sedative, anti-inflammatory, anti-tumor and anti-bacterial effects. Therefore, linalool will be a promising agent for clinical application. This article reviews the pharmacological effects and formulation studies of linalool so as to provide a theoretical basis for its further development and utilization.
Animals
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Anti-Anxiety Agents
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chemistry
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pharmacology
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Anti-Inflammatory Agents
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chemistry
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pharmacology
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Chemistry, Pharmaceutical
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Drugs, Chinese Herbal
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chemistry
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pharmacology
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Humans
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Hypnotics and Sedatives
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chemistry
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pharmacology
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Monoterpenes
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chemistry
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pharmacology
9.The entry of Epstein-Barr virus into B lymphocytes and epithelial cells during infection.
Lie-Lian ZUO ; Mei-Juan ZHU ; Shu-Juan DU ; Jian-Hong LU ; Gui-Yuan LI
Chinese Journal of Virology 2014;30(4):476-482
Epstein-Barr virus (EBV) is a human herpesvirus associated with important human diseases, including infectious mononucleosis syndrome, malignant lymphoma, and nasopharyngeal carcinoma. The mechanism of EBV entry into host cells remains a subject of intensive research. After decades of study, researchers have identified several key proteins and different patterns of EBV intrusion into host cells. The viral surface glycoproteins, gp350/220, gp42, gB, gH, and gL, are involved in interactions with the CR2 receptor on the surface of B lymphocytes during viral entry. However, the majority of epithelial cells lack CR2 receptor expression, which makes viral invasion much more complex than in B lymphocytes. Three different models have been proposed to explain how EBV enters epithelial cells: (1) "transfer of infection", mediated by B lymphocytes or Langerhans cells; (2) EBV utilizes its own proteins during the process of fusion with the cell membrane; and (3) progeny virions arising from EBV-infected epithelial cells cross lateral membranes into adjacent epithelial cells. This review will discuss the relevant mechanism of viral entry into B lymphocytes and epithelial cells during EBV infection.
Animals
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B-Lymphocytes
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virology
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Epithelial Cells
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virology
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Epstein-Barr Virus Infections
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virology
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Herpesvirus 4, Human
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genetics
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physiology
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Humans
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Viral Proteins
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genetics
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metabolism
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Virus Internalization
10.BLG gene knockout and hLF gene knock-in at BLG locus in goat by TALENs.
Shaozheng SONG ; Mengmin ZHU ; Yuguo YUAN ; Yao RONG ; Sheng XU ; Si CHEN ; Junyan MEI ; Yong CHENG
Chinese Journal of Biotechnology 2016;32(3):329-338
To knock out β-lactoglobulin (BLG) gene and insert human lactoferrin (hLF) coding sequence at BLG locus of goat, the transcription activator-like effector nucleases (TALEN) mediated recombination was used to edit the BLG gene of goat fetal fibroblast, then as donor cells for somatic cell nuclear transfer. We designed a pair of specific plasmid TALEN-3-L/R for goat BLG exon III recognition sites, and BLC14-TK vector containing a negative selection gene HSV-TK, was used for the knock in of hLF gene. TALENs plasmids were transfected into the goat fetal fibroblast cells, and the cells were screened three days by 2 μg/mL puromycin. DNA cleavage activities of cells were verified by PCR amplification and DNA production sequencing. Then, targeting vector BLC14-TK and plasmids TALEN-3-L/R were co-transfected into goat fetal fibroblasts, both 700 μg/mL G418 and 2 μg/mL GCV were simultaneously used to screen G418-resistant cells. Detections of integration and recombination were implemented to obtain cells with hLF gene site-specific integration. We chose targeting cells as donor cells for somatic cell nuclear transfer. The mutagenicity of TALEN-3-L/R was between 25% and 30%. A total of 335 reconstructed embryos with 6 BLG-/hLF+ targeting cell lines were transferred into 16 recipient goats. There were 9 pregnancies confirmed by ultrasound on day 30 to 35 (pregnancy rate of 39.1%), and one of 50-day-old fetus with BLG-/hLF+ was achieved. These results provide the basis for hLF gene knock-in at BLG locus of goat and cultivating transgenic goat of low allergens and rich hLF in the milk.
Animals
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Animals, Genetically Modified
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genetics
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Female
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Fibroblasts
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Gene Knock-In Techniques
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Gene Knockout Techniques
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Goats
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genetics
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Humans
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Lactoferrin
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genetics
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Lactoglobulins
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genetics
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Milk
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chemistry
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Nuclear Transfer Techniques
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Plasmids
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Pregnancy
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Transfection