2.Oligonucleotide Array Comparative Genomic Hybridization and Its Application
Yi-Fei PENG ; Wen-Li MA ;
China Biotechnology 2006;0(10):-
The array CGH technique (Array Comparative Genome Hybridization) has been developed to detect chromosomal copy number changes on a genome-wide and/or high-resolution scale. It is mainly used in human genetics and oncology. Generally PCR amplified bacterial artificial chromosomes (BACs) or cDNAs have been spotted on the arrays as probes. Recently, however, oligonucleotide arrays designed with more flexibility and provide much higher resolution with high sensitivity, have been successfully explored in stead of BAC array CGH and can save considerable time and efforts. There will be a gradual transition from BAC array CGH to oligonucleotide array CGH in the coming years. The combination of oaCGH and other high-through put analysis can lead to discoveries of a host of novel oncogenes, tumor suppressors as well as tumor drug resistance genes. Some major platforms of oaCGH concerning their spatial resolution, optimal probe length, sensitivity, specificity and application in recent years were compared.
3.Clinical study of combined penetrating keratoplasty with vitreoretinal surgery
Li-Qiang, WANG ; Yi-Fei, HUANG ; Ying, DONG ; Li, LIU
International Eye Science 2005;5(6):1107-1109
AIM: to assess the effectiveness of a combined procedure ( pars plana vitrectomy with temporary keratoprosthesis, vitreoretinal surgery, and penetrating keratoplasty). in the complicated cases and the risk factors for the surgical failure.METHODS: Restrospectively reviewed charts of patients who underwent penetrating keratoplasty in combination with vitreoretinal surgery between 1990 and 2005, with a follow-up of 3mo to 9a. Analysis was focused on ocular history, indications for surgery, visual acuity (VA), anatomic results, and complications.RESULTS: 18 eyes had light perception or VA of hand motions only. The best-corrected VA improved during the first 3mo, increased in 72.2% of all eyes, remained unchanged in 27.78%, and no decreased. In 3 of 18 eyes (16.67%), VA was better than finger counting and hand motions, and nine eyes(50%) showed useful vision (0.05) postoperatively. 10 eyes showed a clear corneal graft (55.56%). 2 eyes needs the second keratoplasty, Bullous corneal edema was evident in 3 eyes, band keratopathy was evident in a 3 eyes. 10 patients were observed for more than 2a;6 had a clear graft (60%). Two eyes (11.11%) had silicone oil-corneal endothelium contact and all of these grafts failed.CONCLUSION: Although the functional outcome of a combined procedure is limited by primary and secondary tissue destruction, preserving ambulatory vision is possible and thus improves the quality of life, at least in patients with single remaining eyes.
6.DY-1 SUSPENDING RESCUE SEAT ON HELICOPTER
Jinxi NIE ; Shoujin MAO ; Shugui KANG ; Yi FEI ; Songsheng LI ;
Chinese Medical Equipment Journal 1989;0(04):-
DY-1 suspending rescue seat on helicopter is a helicopter-equipped apparatus which is used to rescue flight personnel forced to parachute or landing,or other individual disasters. The thesis briefly introduces the seal s working principle,performances and some experimenting results. It errphasizes on recounting the structure and the condition at operation of the active arm's locking mechanism of the rescue seat's peron fixed ring.
7.Clinical observation of losantan on hyperuricemia
Zhe-Yi CAI ; Xiu-Li FEI ; Feng WU ;
Chinese Journal of Primary Medicine and Pharmacy 2006;0(10):-
0.05),and losantan was not harmful to the livers and kidneys.Con- clusion There were not only good effect of losantan on curing hyperuricemia,but also it had no bad reactions.
8.Effect of Rhizoma Coptidis apozem on expression of AMP-activated protein kinase in skeletal muscle of metabolic syndrome rats
Linlin QIAO ; Fei HUANG ; Xiaoguang YAN ; Huang GONG ; Yi LI
China Journal of Traditional Chinese Medicine and Pharmacy 2005;0(01):-
Objective:To study the effect of Rhizoma Coptidis apozem on expression of AMP-activated protein kinase(AMPK) in skeletal muscle of metabolic syndrome rats. Methods:The models were established by administering high fat diet. Rats were randomly divided into five group: normal control group, metabriolic syndome group, Rhizoma Coptidis apozem group, Berberine group, Metformin group. To estimate insulin resistance by euglycemic hyperinsulinemic glucose clamp(GC) tecchnique. To estimate expression of AMPK by using Western blot. Results: Compared with metabolic syndrome group, Rhizoma Coptidis apozem group had higher M-value, lower wet weight of innards fat, and higher protein level of p-AMPK-?. Conclusion: Rhizoma Coptidis apozem can improve insulin resistance, decrease innards fat, and regulate up expression of AMPK.
9.Study on macular retinal thickness in healthy pregnant women
Guo-Ying, LIU ; Fei, LIU ; Min-Yi, LI
International Eye Science 2014;(10):1873-1875
AIM: To evaluate the physiologic change of retinal thickness during pregnancy.
METHODS:Forty cases ( 80 eyes ) were included two groups:40 eyes ( 20 cases ) in healthy pregnant women group (including in the second and last trimester), and 40 eyes (20 cases) in healthy nonpregnant women group ( control group ) . The macular volume, average thickness, central subfield thickness and retinal thickness of other parafoveal areas were measured by optical coherence tomography scan.
RESULTS: The macular volume was 10. 06±0. 41mm3 and 9. 87±0. 30mm3 in healthy pregnant women group and control group respectively. The average thickness was 279. 43±10. 86μm and 274. 25±8. 07μm in healthy pregnant women group and control group respectively. The central subfield thickness was 235. 15±15. 05μm and 233. 00±15. 81μm in healthy pregnant women group and control group espectively. Statistically significant difference was found in macular volume and average thickness (P<0. 05). The retinal thickness of 8 parafoveal areas in healthy pregnant women group increased comparing with control group, but statistical significance was only found in superior-outer area and inferior-outer area(P<0. 05). OCT images of all cases were normal.
CONCLUSION:The macular retinal thickness increases during pregnancy in the second and last trimester. The physiologic change of retinal thickness should be considered when evaluating pathologic retinal disease of pregnant women.
10.Meta analysis of RCT for effectiveness and safety of fibrin glue versus suture in pterygium excision with conjunctival autograft
Wen, FAN ; Chang-zheng, CHEN ; Fei, LI ; Yi-qiao, XING
Chinese Journal of Experimental Ophthalmology 2011;29(12):1125-1129
Background Fibrin glue has been utilized to adhere the graft during the pterygium excision with conjunctival autografts.Several relevant clinical randomized controlled trial(RCT) and retrospective studies have been published abroad,but the samples for its effectiveness and safety issue of fibrin glue and suture are still underinvestigation.Objective Current study was to quantificationally assess the efficacy and safety of fibrin glue versus sutures in the application of pterygium excision with conjunctival autografts.Methods Based on established search strategy,a computerized literature search was conducted to identify all citations concerning the RCT for effectiveness and safety evaluation of fibrin glue and suture for the graft fixation during the pterygium excision with conjunctival autografts from MEDLINE ( from 2000 to October,2010 ),EMbase ( from 2000 to October,2010 ),Cochrane Central Register of Controlled Trials ( Issue 4,2010 ),CBMdisc ( 2000 to October 2010 ),CNKI ( 2000 to October 2010 ),and the relevant conference proceedings and references searched by hand was performed as supplement.The included literature was scored with Jadad table.The Cochrane Collaboration' s RevMan 5.0 software was used for the test of heterogeneity or test for overall effect.The effective indexes,such as operative duration,recurrence rate and complication,were evaluated by Meta analysis.Results Six RCTs involving 401 eyes of 377 participants were identified.These literatures were published with English in 2004-2010 from China,New Zealand,Sweden,Israel,Turkey and Malasia and the Jadad scores were 4-5.The quantitatively analysis revealed that fibrin glue appeared to short the operative time compared with suturing method (MD =14.23 ;95% CI:- 16.18- 12.29;P=0.00) and drop the rate of recurrence ( RR =0.49,95% CI:0.26 -0.95 ; P =0.03 ).No significant differences were found in the rate of postoperative graft dehiscence or absence (RR =3.41,95 % CI:0.85-13.68;P =0.08 ).Conclusions Fibrin glue shows the good effectiveness and easy application during the pterygium excision with conjunctival autografts.Long-term follow-up of multi-central RCTs with a larger number of cases are still needed to support this conclusion.