1.Research progression on resistance mechanisms of epidermal growth factor receptor tyrosine kinase ;inhibitors in non-small cell lung cancer
Yun LIU ; Jifeng FENG ; Zhaoyue YAN
Journal of International Oncology 2015;(3):206-209
EGFR-TKI plays an important role in the treatment of non-small-cell lung cancer. However, some researchers find that there are still some patients with primary or acquired resistance to EGFR-TKI. The present known mechanisms of acquired drug resistance finally lead to the re-activation EGFR downstream signa-ling pathways. Liver X receptor agonist has inhibition function to several critical steps of EGFR downstream sig-naling pathways PI3K-Akt-NF-κB,which makes it possible to overcome the drug resistance.
3.Comparative analysis of emmetropia biology measurement in Han and Kazak college students
Meng, LIU ; Yan, WANG ; Yun-Xian, GAO
International Eye Science 2015;(1):120-121
? AlM: To observe the differences of central cornea thickness, anterior chamber depth, corneal anterior curvature and corneal posterior curvature between the Kazak and the Han nationality college emmetropia students, and analyze the relationship of corneal thickness and corneal curvature.?METHODS: More than 500 students in grade one in Xinjiang Medical University for screening, selected 55 emmetropia eyes in Han nationality students and 51 in Kazak students. Sirius corneal topography was applied to the measurement.? RESULTS: Kazak and the Han nationality college emmetropia students' central cornea thickness ( Kazak:0. 52± 0. 03mm, Han:0. 54 ± 0. 03mm), anterior chamber depth (Kazak:2. 97 ± 0. 31mm, Han: 3. 14 ± 0. 25mm) had significant difference (P<0. 05). Corneal anterior curvature and corneal posterior curvature were no significant difference (P>0. 05). Han had no significant relationship in corneal thickness and corneal anterior curvature (r<0), or in corneal posterior curvature ( r < 0. 1 ) . Kazak had no significant relationship in corneal thickness and corneal anterior curvature (r<0), or in corneal posterior curvature(r<0. 1).? CONCLUSlON: There are significant differences between the Kazak and the Han nationality college emmetropia students in cornea thickness, anterior chamber depth. There is no significant relationship between corneal thickness and corneal curvature (K1, K2) in Kazak and the Han nationality college emmetropia students.
4.Analysis the complications after trabeculectomy in 405 cases in department of ophthalmology
Xing-Yun, YAN ; Ping, HE ; Jing, LIU
International Eye Science 2015;(4):707-708
AIM: To analyze and summarize the effect of glaucoma trabeculectomy in the department of ophthalmology in basic hospital.
METHODS: Postoperative intraocular pressure ( IOP ) , filtering bleb and complications of 316 cases (405 eyes) of patients with glaucoma after trabeculectomy were analyzed.
RESULTS: After follow- up 12mo, 76. 5% IOP was controlled in normal level. 42. 5% was filtration bleb typeⅠ, 33. 1% typeII, 14. 6% in typeⅢand 9. 9% in typeⅣ. Intraoperative complication rate was 2. 5%, that was 31.4% at postoperative early stage ( before discharge ) , and 6. 7% at postoperative long - term ( 6mo after discharge) .
CONCLUSION:Trabeculectomy for glaucoma can better solve the problem of high IOP. It is more mature in primary hospitals, but there are still a variety of intraoperative and postoperative complications.
6.ISOLATION,CULTURE AND PURIFICATION OF CEREBRAL CORTICAL NEURONS AND GLIAL CELLS FROM THE EMBRYONIC GEKKO
Yun GU ; Mei LIU ; Yan LIU ; Xiaosong GU
Acta Anatomica Sinica 1957;0(04):-
Objective To establish a method of neurons and glial cell culture from embryonic Gekko japonicus cerebral cortex. Methods Embryonic(E15) pallium was dissociated and digesting by trypsin.After counting,cells were seeded in culture flask.The glial cells were obtained by using differential adhesion potential combined with successive passage purified methods,and neurons were obtained by using neurobasal medium supplemented with B27.The cells were fixed and analyzed with immunohistochemic assay. Results After tetra-generation,GFAP positive cells were more than 95% in glial cells cultured condition;Neurons grew well in neurobasal medium,and NF and MAP-2 positive signals co-localized on neurons.After cultured for 10 days,the percentage of neurons was more than 95%.Conclusion The methods of isolation,culture and purification for embryonic Gekko japonicus cortical neurons and glial cells were established and it might be a valuable cell model to further investigate the central nerve system in Gekko japonicus.
7.Clinical Application of Multiplanar Reformatted Images of Multislice Spiral CT in Chronic Suppurative Otitis Media
Chengxin YAN ; Yaqun LIU ; Linxiang LIU ; Yun YUE
Journal of Practical Radiology 2000;0(02):-
Objective To evaluate the clinical application value of multislice spiral CT (MSCT) in diagnosis andclinical treatment of the chronic suppurative otitis media(CSOM). Methods Multislice spiral CT with direct axial plane and saggitalmultiplanar reformation(MPR) were performed in 61 cases including 76 ears.The results from those images were comparedwith that of operations. Results The sagittal MPR images preferably could delineate the anatomical details of the temporal bone and theadjacent relationship,and could display the tympanicand mastoid segment of the facial nerve,sigmoid sinus plate and the glomusjugular better.On the sagittal MPR images,the disruption of the ossicular chain and bony erosion in the tympanic cavity and antrum weredisplayed in 38 ears.The destruction of the facial nerve canal was severe in the type of cholesteatoma compared with the type of granuloma of chronic suppurative otitis media.The congenital abnormities were showed in 8 ears of the sigmoid sinus plate and 2 ears of the glomus jugular.Conclusion CT sagittal MPR images are of significant clinical value in showing the degree and location of destruction of the canal of facial nerve , and the relation between around structures in chronic suppurative otitis media.
8.Distribution and antimicrobial resistance of clinically isolated pathogens in hematology department from 2011 to 2013
Fangfei LIU ; Yun YANG ; Yan GENG ; Yi ZHANG
Chinese Journal of Infection Control 2015;(5):306-310
Objective To analyze the distribution and antimicrobial resistance of pathogens isolated from department of hematology during the past three years.Methods Pathogenic strains isolated from patients hospitalized in a hematology de-partment between January 2011 and December 2013 were collected,antimicrobial susceptibility testing was performed by Kirby-Bauer disk diffusion method or automatic system,antimicrobial susceptibility testing results were judged according to American Clinical and Laboratory Standards Institute 2011, data were analyzed by WHONET 5.6 software. Results A total of 462 clinical isolates were collected in 2011—2013,including 161 gram-positive cocci isolates,279 gram-negative bacilli,and 22 fungi.Of Staphylococcus spp ,detection rate of methicillin-resistant coagulase negative Staphylo-coccus(MRCNS)and methicillin-resistant Staphylococcus aureus (MRSA)was 81.37% and 62.50%respectively.The re-sistant rate of Staphylococcus spp .and Enterococcus spp .to linezolid was 1.69% and 3.57% respectively,resistant rate of Staphylococcus spp .to teicoplanin was 3.39%,vancomycin-resistant gram-positive coccus was not found.Enterobacte-riaceae strains Escherichia coli and Klebsiella pneumoniae were highly susceptible to carbapenems,the sensitivity rates were 97.56%—98.88%;while nonfermentative gram-negative bacilli Pseudomonas aeruginosa and Acinetobacter bauman-nii strains were obviously resistant to carbapenems,the resistance rates were 38.71%—64.00%.Conclusion Antimicrobial resistance of major pathogenic strains from hematology department is high,antimicrobial agents should be used according to pathogenic distribution characteristics and antimicrobial susceptibility testing results,healthcare-associated infection control should be strengthened to reduce antimicrobial resistant rate.
9.Analysis on Risk Factors of Type 2 Diabetes Mellitus with Mild Cognitive Dysfunction
Lianyu GUO ; Yan LIU ; Haiyan QIU ; Yuying ZHOU ; Yun XIE
Tianjin Medical Journal 2013;(8):772-775
Objective To investigate the risk factors of mild cognitive impairment (MCI) in patients with type 2 dia-betes (T2DM), and the clinical evidence for the early diagnosis and treatment thereof. Methods A total of 217 T2DM pa-tients were divided into T2DM with MCI group (n=92) and T2DM with normal cognitive function(NMCI) group (n=125). Mon-treal cognitive assessment scale (MoCA) and activities of daily living scale (ADL) were used to assess the functional status in two groups of patients. The general clinical data and biochemical indicators were obtained and compared in two groups. Re-sults There were statistical differences in age, smoking history, education status, high sensitive C reactive protein (hs-CRP), coronary heart disease, hypertension, glycated hemoglobin A1c (HbA1c) and T2DM history between two groups. Re-sults of univariate logistic regression analysis showed that old age, longer course of T2DM, smoking history, higher hs-CRP and HbA1c, complicated with coronary heart disease and hypertension were risk factors for T2DM with MCI, while the higher education status was a protective factor. Multiple logistic regression analysis showed that old age and longer T 2DM history were risk factors, and the higher education was a beneficial factor for T2DM with MCI. Conclusion Many risk factors may play a part in T2DM with MCI. Early detection and prompting medical attention may help prevent and decrease the preva-lence of MCI in patients with T2DM.
10.SIMPP analysis on curriculum satisfaction of students
Fang LIU ; Sufen MIAO ; Ou TAO ; Surong YAN ; Yun WANG
Chinese Journal of Medical Education Research 2015;(7):686-689
The degree of satisfaction of the curriculum is related not only to the degree of the curriculum but also to the degree of the students' development. With the concept of teaching reform micro system engineering, using the SIMPP analysis of the degree of satisfaction of the curriculum, the relevant factors of the students are studied. The results show that, the learning state, learning objec-tives, and the education level of mother affect the students more easily on the curriculum satisfaction. Research shows, in the present curriculum condition, educators should guide the students to study hard, establish a clear and reasonable learning goal, give the students the introduction and analysis of the curriculum, can effectively improve the students on the curriculum satisfaction, enhance the enthusiasm of the study.