1.Quantitative changes of anterior segment before and after implantable collamer lens implantation for high myopia with Pentacam anterior segment system
International Eye Science 2015;(5):789-792
?AlM: To analyze the quantitative changes of anterior segment by Pentacam anterior segment system and to evaluate the safety and effectiveness after implantable collamer lens ( lCL) implantation for high myopia.
?METHODS:Twenty- one patients with 39 eyes were implanted lCL in our hospital from September 2011 to February 2013. The follow-up was 6 ~ 12mo. Central anterior chamber depth ( ACD ) , anterior chamber angle ( ACA) , anterior chamber volume ( ACV) were measured by Pentacam preoperatively, 1wk, 1 and 6mo postoperatively. The distance between crystal lens and lOL ( lCL- vault ) were measured at 1wk, 1 and 6mo postoperatively. Preoperative uncollected visual activity ( pre - UCVA ) , best corrected visual acuity ( BCVA ) , postoperative uncorrected visual acuity ( post-UCVA) and intraocular pressure ( lOP) were recorded. The paired t-test was used to access the data preoperatively and postoperatively in the statistical way by using SPSS 18. 0 statistical software.
? RESULTS: Preoperatively, at 1wk, 1 and 6mo postoperatively, ACD were 3. 27±0. 22, 3. 02±0. 33, 2. 98±0. 31, and 2. 98±0. 32mm. ACA were (40. 39±5. 40)o, (26. 70±4. 47)o, (26. 96±4. 48)o, and (26. 95±4. 45)o. ACV were 207. 74±25. 43, 122. 87±17. 58, 128. 05±17. 84, and 128. 64±17. 50mm3 , respectively. There were statistically significant differences between preoperative and postoperative data in ACD, ACA, ACV (P<0. 05). The distances between crystal lens and lOL ( lCL-vault) were 0. 49±0. 13, 0. 46±0. 13, and 0. 46±0. 14 at 1wk, 1 and 6mo postoperatively. There were statistically significant difference between 1wk and the others (P<0. 05). There were statistically significant different between the preoperative BCVA and postoperative BCVA(P<0. 05). There was no contact between lOL and the crystal len. The anterior chamber angle was all open. There were no serious complications such as cataract, glaucoma, cystoid macular edema, retinal detachment, etc.
?CONCLUSlON:ACD, ACA, ACV by Pentacam anterior segment system are found to be decreased after the operation, but there is still a relative safe distance between lOL and the crystal len. lCL implantation is a safe, efficacy method in correcting high myopia, but the long-term effects will require further observation.
2.Application of Flow Cytometry in Viability Detection of Pichia pastoris Cells
An-Feng XIAO ; Xiang-Shan ZHOU ; Li ZHOU ; Yuan-Xing ZHANG ;
Microbiology 1992;0(06):-
Cell viability of Pichia pastoris was detected by flow cytometry (FCM) with two reagents fluorescein diacetate (FDA) and propidium iodide (PI). Compared with FDA/PI double-stained dot plots and PI single-stained dot plots,the latter could divide dead and living cells into two separate zones,and get the correct proportion. Then PI single-stained method was used to detect the change of cell viability in Pichia patoris fermentation. At glycerol batch and fed-batch phase,little dead cells were detected. At methanol fed-batch phase,cell viability decreased when cell weight increased,and was only 73.8% at 88 h.
3.Professional skill examination and standard training of anaesthesiology residents
wen-yuan, YIN ; zhen-zhou, HE ; xiang-rui, WANG
Journal of Shanghai Jiaotong University(Medical Science) 2008;0(S1):-
Objective To evaluate the training quality of anaesthesiology residents in different hospitals. Methods The scores of 125 residents,attending Shanghai resident clinic skill examination from 2005 to 2007,were analyzed. ResultsThe scores of examinees from municipal hospitals were higher than those from district hospitals,municipal specialized hospitals and traditional Chinese medicine hospitals.The scores of practice part were higher than those of theory part in all groups. Conclusion The training quality is related to the comprehensive strength of the hospital in which examinees work,but the training of theory knowledge still need to be strengthened.
4.Application of Direct Gene Disruption Method in Recombinant Pichia pastoris
Zhen-Hua NI ; Xiang-Shan ZHOU ; Yuan-Xing ZHANG ;
Microbiology 1992;0(06):-
Proteolytic degradation has been a severe problem when Pichia pastoris is employed to express recombinant proteins.One alternative method to circumvent this problem is to construct protease gene disruptant.However,the main study of gene disruption is focused on nonrecombinant Pichia pastoris rather than recombinant strain.In our study,we established two different methods to directly disrupt PRC1 and KEX1 gene in recombinant Pichia pastoris.On the basis of this,we further discussed and compared the application and advantages of both methods.
5.Expression and Purification of Receptor Tyrosine Kinase ErbB2 Kinase Domain
Xi JIANG ; Xiang-Shan ZHOU ; Yuan-Xing ZHANG ;
Microbiology 2008;0(09):-
The kinase domain of receptor tyrosine kinase(RTK) ErbB2 was expressed fused with GFP in Pichia pastoris. Recombinant expression vector pPIC3.5K was constructed in Escherichia coli TOP10. The right P. pastoris transformants were screened on his-deficient plates and YPD-G418 plates by turns after electroporation of recombinant vector, and then induced by methanol in baffled shake bottles. The strain with highest protein yield was scaled up in a 5 L fermentor. Recombinant protein was analyzed with tyrosine kinase assay after Ni2+ affinity chromatograph. Results showed that the 100 kD recombinant protein with tyrosine kinase activity was successfully expressed in P. pastoris.
6.Effect of Specific Growth Rate and Nitrogen Source on the Production of Recombinant Lateolabrax japonicus Growth Hormone by Pichia pastoris
Chun WEI ; Xiang-Shan ZHOU ; Yuan-Xing ZHANG ;
Microbiology 2008;0(10):-
The bioreactor production of recombinant Lateolabrax japonicus growth hormone (rljGH) expressed intracellularly by Pichia pastoris was investigated. A strategy of feeding methanol at the exponential rate was established and the effect of specific growth rate on the rljGH production was examined. The results indicated that the average specific production rate increased and the rljGH production duration decreased as the specific growth rate increased. The maximum specific rljGH production (0.58 mg/g WCW) was achieved at a specific growth rate of 0.029/h. The effect of supplementing ammonium sulfate, peptone and yeast ex- tract on the rljGH production was further investigated. The results indicated that the effects of ammonium sulfate and peptone were not significant. Supplementing yeast extract of 2.5 g/L was advantageous for the rljGH production. The duration of the rljGH production was increased to 23 h from 17 h and the fermenta- tion stability of run-to-run could be improved.
7.Expression and Purification of Receptor Tyrosine Kinase PDGFR?
Jian-Sheng MAO ; Xiang-Shan ZHOU ; Yuan-Xing ZHANG ;
Microbiology 2008;0(10):-
A fusion expression vector pPIC3.5K-PDGFR? was constructed to express recombinant receptor tyrosine kinase PDGFR? and the right Pichia pastoris transformants were screened on his-deficient plates and YPD-G418 plates by turns after electroporation of strain GS115, a high yield strain named M3 was screened. The strain M3 was cultured in a 5 L fermentor and His-GFP-PDGFR? fusion protein was purified by Ni2+ chelating affinity chromatography. One distinct peak was obtained after elution with 250 mmol/L imidazole. Fusion protein was proved to be 90.08 kD by western blotting, and have tyrosine kinase activity by ELISA. Results showed that the receptor tyrosine kinase PDGFR? was successfully expressed in P. pastoris and could be used as a target for small molecule selective inhibitors screening.
8.Quality of life in adults with strabismus
Yuan-Xiang, ZHOU ; Shi-Bei, LUO ; You-Guo, DUAN
International Eye Science 2015;(4):690-692
AIM: To investigate the quality of life in adults with strabismus and evaluate the improvement in quality of life after treatment.
METHODS: In this prospective study, forty-five adults with a diagnosis of strabismus conform to the inclusion and exclusion standard were selected in our hospital from October 2013 to May 2014, as experimental group and 45 normal adults were enrolled as control group. A Chinese Adult Strabismus-20 questionnaire was used to evaluate the differences of quality of life between patients with strabismus and normal adults, and to evaluate the differences of quality of life in patients with strabismus preoperative and 6mo postoperative.
RESULTS:The scores of quality of life in adult patients with strabismus preoperative and 6mo postoperative were statistically significant lower than those of normal adults (P< 0. 01). In 6mo postoperative, the scores of quality of life statistically significant increased than preoperative ( P<0. 01).
CONCLUSION: Strabismus can decrease the quality of life in psychosocial and visual functional for adults and the surgical treatment can improve quality of life in patients with strabismus.
9.Anti-inflammatory effect of Chikusetsu oleanane saponin on RAW264. 7 cell through regulating SIRT1 activity
Qin YUAN ; Ding YUAN ; Zhiyong ZHOU ; Chaoqi LIU ; Ting WANG ; Tingting XIANG ; Changcheng ZHANG
Chinese Pharmacological Bulletin 2016;32(3):349-354
Aim To investigate SIRT1 activity and an-ti-inflammatory effects of Chikusetsu oleanane saponin ( COS) on the RAW264. 7 macrophage cells induced by lipopolysaccharide ( LPS ) . Methods The nitric oxide ( NO) release was detected with Griess method. Western blot was used to detect the expression of tumor necrosis factor-α( TNF-α) , interleukin 1β( IL-1β) . Nuclear factor-κB ( NF-κB) and silent information ad-justment factor 1 ( SIRT1 ) were tested by immunofluo-rescence. Results 1 mg · L-1 LPS co-cultured with COS at 25~300 mg·L-1 had no significant effect on the growth of RAW264. 7 cells. Compared with the LPS group, COS effectively inhibited the NO release and suppressed the expression of TNF-α and IL-1β, and also inhibited the translocation of NF-κB and up-regulation of SIRT1 . Conclusion COS has protective effects on RAW264. 7 cells stimulated by LPS, which may be related to up-regulating the expression of SIRT1 and promoting the deacetylation of NF-κB, thereby in-hibiting the translocation of NF-κB and reducing the expression of TNF-α and IL-1β.
10.Effect of aldosterone and its antagonist spironolactone on epithelial-mesenchymal transition of mormal rat kidney epithelial cells in high glucose
Kanghan LIU ; Qiaoling ZHOU ; Xiang AO ; Pouranan VEERARAGOO ; Xuemin HONG ; Zhou XIAO ; Mingxia YUAN
Journal of Central South University(Medical Sciences) 2010;35(3):222-229
Objective To determine the effect of aldosterone and its antagonist, spironolactone on epithelial-mesenchymal transition (EMT) of normal rat kidney epithelial cells (NRK-52E) in a high glucose milieu,and to explore the mechanism of renoprotection in diabetic nephropathy (DN ) in rats involving aldosterone and spironolacton. Methods NRK-52E cells were simultaneously cultured in the serum-free Dulbecco's modification of Eagle's medium Dulbecco (DMEM) for 12 hours. Then the low glucose (LG) group was cultured in LG (1000 mg/L) DMEM:The high glucose (HG) group was cultured in high glucose (4 500 mg/L) DMEM. The aldosterone (Aldo) groups were cultured in high glucose DMEM with the addition of 10,50 and 100 nmol/L aldosterone respectively. The SP group was cultured in high glucose (4 500 mg/L) DMEM plus 10~(-7)mol/L spironolactone. Immunohistochemistry, RT-PCR and Western blot were used to detect E-cadherin and α smooth muscle actin(α-SMA) mRNA expression. Results RT-PCR showed that compared with the LG Group, E-cadherin mRNA expression in the HG group was significantly lower, and α-SMA mRNA expression was significantly increased(P<0.05). E-cadherin mRNA expression in the 50 nmol/L Aldo group and 100 nmol/L Aldo group was significantly lower than that in the HG group, while the expression of α-SMA mRNA was significantly increased in the HG group(P<0.05), with a dose-dependent relationship with aldosterone(r=-0.70,P<0.05;r=0.67, P<0.05). E-cadherin mRNA in the SP group was significantly higher,while α-SMA mRNA expression was lower than that in the HG group(P<0.01). Immunohistochemistry and Western blot showed that compared with the LG group, E-cadherin protein expression was significantly reduced, and α-SMA expression was significantly increased in the HG group(P<0.01). In the 10 nmol/L Aldo, 50 nmol/L Aldo, and the 100 nmol/L Aldo groups, E-cadherin protein expression was significantly lower, and α-SMA protein expression was significantly higher than that in the HG group(P<0.05), with a dose-dependent relationship with aldosterone(r=-0.83,P<0.05;r=0.81, P<0.05). In the SP group, E-cadherin protein expression was higher, and α-SMA protein level was lower than that in the HG group(P<0.05). Conclusion Aldosterone can promote EMT of tubular epithelial cells in a high sugar milieu, leading to renal interstitial fibrosis in Diabetic nephropathy. Spironolactone can inhibit high glucose-induced renal tubular epithelial cells EMT, which may be an important mechanism for the inhibition of renal interstitial fibrosis.