1.Comparison of the efficacy of intraspinal tumor resection under quadrant channel and hemilaminectomy surgery
Chen CHEN ; Gang BAO ; Baixiang HE
Journal of Xi'an Jiaotong University(Medical Sciences) 2016;(2):183-186
Objective To compare the clinical efficacy of intraspinal tumor resection under quadrant channel and hemilaminectomy surgery.Methods We retrospectively studied 33 patients with intraspinal tumor with the lesion length of less than 5 cm hospitalized in our hospital from July 2013 to July 201 5.Of the 33 patients,1 6 patients received intraspinal tumor resection under quadrant channel and 1 7 patients received intraspinal tumor resection under hemilaminectomy surgery.We compared various indicators in the two groups,including the length of surgical incision,surgical operation time,bleeding volume during operation,time for the first ground activity after surgery,length of hospital stay (LOS)after surgery,visual pain simulation (VAS)score 1 week after surgery, and JOA score excellent and good rates.Results The patients who received quadrant channel intraspinal tumor resection outperformed those who received hemilaminectomy surgery regarding the length of surgical incision, bleeding volume during operation,time for the first ground activity after surgery,LOS after surgery,and VAS score 1 week after surgery (P <0.05 ).Conclusion Intraspinal tumor resection under quadrant channel is a safe and effective therapy because of small trauma,less bleeding,quick recovery and curative effect.
2.Expressions of Ki-67, c-myc and p53 in esophageal cancer and their significance
Peigang ZHANG ; Yonghong CHEN ; Gang CHEN ; Bingling MA ; Pirui HE
Cancer Research and Clinic 2014;26(8):544-546,549
Objective To investigate the role of Ki-67,c-myc,p53 in human in esophageal cancer.Methods 25 specimens of human esophageal cancer as observe group and 25 adjacent normal specimens as control group were selected.Expressions of Ki-67,c-myc,p53 protein were detected by immunohistochemical staining.Results Protein expressions levels of Ki-67,c-myc and p53 in human esophageal cancer were significantly higher than those in control group 5.0,2.0,3.0 vs 1.0,0.5,0.3,respectively (all P < 0.05).The expression level of Ki-67 protein in high differentiation group were significantly lower than that of moderate and low differentiation group (3.0 vs 6.0,P < 0.05).In human esophageal cancer specimens,the expression level of Ki-67 protein was positively correlated with that of c-myc (P < 0.05).Conclusion The expressions of Ki-67,c-myc and p53 are higher in esophageal cancer,which are increased with the higher differentiation.Ki-67,c-myc and p53 proteins may be taken as potential markers in human esophageal cancer.
3.Feasibility and safety of laparoscopic radical gastrectomy:a Meta-analysis
Gang CHEN ; Hezhao ZHAO ; Xiufeng CHEN ; Zhenzong TAN ; Miao HE
Chinese Journal of Current Advances in General Surgery 2017;20(5):350-354
Objective:To explore the feasibility and safety of laparoscopic radical gastrectomy for gastric cancer through analysising the laparoscopic radical gastrectomy and open radical gastrectomy.Methods:Retrieval the Cochrane Library,PubMed,EMBASE,CBM,VIP,CNKI,WANFANG DATA,the time is from January 2010 to August 2015.Bring into the comparative studies about laparosopic radical gastrectomy and laparotomye.Processing data using the revman 5.2 to reaserch the feasibility and safety of laparoscopic radical gastrectomy.Results:7 clinical comparative studies were included in this study.The observation group was the group of laparoscopic radical gastrectomy and the control group was the group of laparotomye.Results showed that the length of incision of the observation group was shorter[MD=-12.93,95% CI (-13.16,-12.70),P<0.00001];The observation group bleeding was lesser[MD=-129.98,95%C1(-220.54,-39.42),P=0.005];The number of lymph node of the two groups had no significant difference [MD=0.77,95% CI (-2.56,3.60),P=0.56];The operation time of the observation group was longer [MD=49.17,95% CI (25.32,73.02),P<0.0001];The hospitalization time of the observation group is shorter [MD=-2.27,95% CI (-3.77,0.77),P=0.003].Conclusion:Laparoscopic radical gastrectomy is feasible and it is superior to laparotomye within the thoroughness,minimally invasiving and safety.
4.EFFECTS OF LOW MOLECULAR WEIGHT POLYPEPTIDE EXTRACTED FROM CHICKEN EMBRYO ON LEARNING AND MEMORY IN AGING MICE INDUCED BY D-GALACTOSE
Shu CHEN ; Yunshao HE ; Gang CHEN ; Jinsong GAO
Acta Nutrimenta Sinica 1956;0(01):-
Objective To investigate the effects of low molecular weight polypeptide(LMP) extracted from chicken embryo on learning and memory in senile mice induced by D-galactose(Gal). Method The 16 d old chicken embryo was acid and alkali hydrolyzed,enzymolyzed and ultrafiltered to formulate LMP. 48 mice were divided randomly into four groups: control,aging model ,aging+low dose LMP,aging+high dose LMP. The aging model and two LMP groups were treated with Gal 80 mg/ (kg bw?d) by nape subcutaneous injection,while the control group with normal saline 8ml/(kg bw?d). Control and model groups were given i.g. normal saline 20 ml/(kg bw?d),and two LMP groups 10 ml or 20 ml/(kg bw?d) LMP respectively. Learning and memory of mice were tested with Morris water maze. Results The escape latency of model group was longer and the percentage of swimming distance in platform region higher than that of control group (P
5.Texture Feature Analysis in Follow-up of Pulmonary Ground Glass Nodule
Botao WANG ; Gang LIU ; Lei HE ; Lihui LI ; Zhiye CHEN
Chinese Journal of Medical Imaging 2017;25(6):441-446,451
Purpose At present,morphological observation and CT value measurement were mainly used to evaluate ground-glass nodule (GGN),and there was no effective image feature-quantization evaluation method.Therefore,in this study,a follow-up quantization analysis was conducted on GGN within 2 years using texture feature analysis method to confirm reasonable GGN follow-up time.Materials and Methods Baseline and highresolution CT images of 100 GGN follow-up patients were retrospectively analyzed.They were assigned into three groups,3 months follow-up (group A),6 to 12 months follow-up (group B) and 2 years follow-up (group C).For each group,using firstly founded GGN image as baseline,GGN texture features (including energy,contrast,autocorrelation,inverse difference moment and entropy) were analyzed.Results There were 1 case of narrowed nodules in group A,1 case of increased nodules and 1 case of narrowed nodules in group B,and 4 cases of increased nodules in group C,2 of which showed density differences.There was no significant change in shape,density and size of the remaining nodules.There were no significant differences in texture features (energy,contrast,autocorrelation,deficit,entropy) among group A,group B and group C (P>0.05).Conclusion Texture feature analysis can quantitatively evaluate the change of GGN attribute characteristics,and as a GGN follow-up quantitative tool,it can guide patients to choose reasonable follow-up mode.
6.Research Progress on the relationship between HPV E6 protein and cervical cancer
Denghua PAN ; Rongquan HE ; Kanglai WEI ; Gang CHEN
Journal of Medical Postgraduates 2014;(11):1229-1232
Cervical cancer is the second most common malignant tumor of women all over the world.Infection with oncogenic human papilloma virus ( HPV) types is the most important risk factor to cause cervical cancer.The viral genome of HPV consists of three regions:the early region (E), the late region (L) and the long control region (LCR).The early proteins (E1, E2, E4, E5, E6, E7 ) play vital roles in the continuous virus expression and replication in cells.Among these proteins, E6 protein has the closest relationship with the tumorogenesis and development of cervical cancer.Many mechanisms of the HPV encoded early protein E6 in in-ducing cervical cancer have been characterized, including degradation of p53 protein, activation of telomerase, interaction with PDZ protein, disturbance of cellular signaling pathways, inhibition of immune recognition and blockage of cellular apoptosis.HPV E6 pro-tein may be a preferred target in prevention and treatment of cervical cancer.
7.New research progress of microRNAs in retinoblastoma
Jing, ZENG ; Rui-Xue, TANG ; Rong-Quan, HE ; Gang, CHEN
International Eye Science 2014;(11):1995-1998
Retinoblastoma(RB)is the most common intraocular malignancy of children with extremely poor prognosis. MicroRNAs are small non-coding single-stranded RNAs in eukaryotic cells, which regulate the expression of gene by mRNA degradation or translation inhibition. MicroRNAs, acting as oncogenes or tumor suppressor genes, are associated with the occurrence and development of RB directly, which is vital for the early diagnosis and clinical targeted therapy of RB. This review summarized the expression of microRNAs in RB and the related mechanism.
8.Therapeutic effect of clindamycin combined with compound sulfamethox-azole tablets on pneumocystis pneumonia associated with acquired immuno-deficiency syndrome
Zhong CHEN ; Gang XIAO ; Quan ZHOU ; Yan HE
Chinese Journal of Infection Control 2016;15(10):773-776
Objective To understand the therapeutic effect of clindamycin combined with compound sulfamethoxazole tablets on pneumocystis pneumonia(PCP)associated with acquired immunodeficiency syndrome (AIDS).Methods 97 AIDS patients with PCP in a hospital from January 2014 to March 2015 were randomly divided into control group (n=49,received compound sulfamethoxazole )and trial group(n=48,received clindamycin on the basis of com-pound sulfamethoxazole ),levels of partial pressure of oxygen in arterial blood (PaO2 ),arterial blood oxygen satu-ration(SaO2 ),serum albumin(ALB),and lactic dehydrogenase (LDH)in two groups of patients before and after treatment were recorded.Results Levels of PaO2 ,SaO2 ,ALB,and LDH between two groups of patients before treatment was not significantly different(all P >0.05).After treatment,PaO2 in control group and trial group were (73.01 ±4.62)mmHg and(84.92 ±5.34)mmHg respectively,SaO2 were (75.81 ±4.28)% and(90.86 ±5.94)%respectively,ALB were (32.62±4.41 )g/L and(43.95 ±5.03)g/L respectively,LDH were(416.53 ±30.77)U/L and(331 .58±20.86)U/L respectively,levels of PaO2 and SaO2 in trial group were both higher than control group , difference in ALB and LDH between two groups of patients after treatment were both statistically significant(both P <0.05).The total effective rate of trial group was 89.58% (n=43),which was higher than 69.39%(n=34)in control group (χ2 =6.04,P =0.014).Conclusion Clindamycin combined with compound sulfamethoxazole tablets has good therapeutic effect on AIDS and PCP,which is worthy of clinical popularization and application.
9.The effects of different statins in prevention of contrast induced nephropathy in perioprative period
Yang CHEN ; Mingjiang LIU ; Tao HE ; Gang LI
The Journal of Practical Medicine 2016;32(3):466-469
Objective To assess the effects of different statins in the prevention of contrast induced nephropathy (CIN)by comparing the changes of early renal injury biomarker serum levels in patients of with coronary artery angiography (CAG). Methods 183 patients who had normal renal function with CAG with normal renal function were randomly divided into the control group (n=61)、the atorvastatin group (n=60) and the rosuvastatin group (n=62). Renal injury biomarker levels (Scr,mALB, Cys C)and serum inflammatory factor (high sensitivity C reactive Protein,hs-CRP) of three groups were monitored and analyzed before and after CAG. Results The mALB(mg/L, 18.19 ± 8.25 vs. 12.07 ± 6.15,14.81 ± 6.23 vs. 12.32 ± 5.19,15.31 ± 7.53vs. 11.39 ± 5.38), Cys C(mg/L, 1.36 ± 0.32 vs. 0.90 ± 0.38,1.18 ± 0.25 vs. 0.91 ± 0.31,1.15 ± 0.21 vs. 0.93 ± 0.30), hs-CRP(mg/L,5.52 ± 2.09 vs. 1.96 ± 0.55, 3.86 ± 1.15 vs. 2.01 ± 0.34,3.93 ± 1.09 vs. 2.03 ± 0.23)levels in three groups raised up-regulated after angiography with statistical significance (P <0.05). Levels of mALB(mg/L,18.19 ± 8.25 vs. 14.81 ± 6.23, 18.19 ± 8.25 vs. 15.31 ± 7.53), Cys C(mg/L, 1.36 ± 0.32 vs. 1.18 ± 0.25,1.36 ± 0.32 vs. 1.15 ± 0.21), hs-CRP(mg/L, 5.52 ± 2.09 vs. 3.86 ± 1.15, 5.52 ± 2.09 vs. 3.93 ± 1.09)in the statin treatment groups was were lower than that in control group with statistical significance (P < 0.05). But Whereas there was were no significantly difference between the atorvastatin group and the rosuvastatin group [mALB (14.81 ± 6.23) mg/L vs. (15.31 ± 7.53) mg/L, CysC (1.18 ± 0.25) mg/L vs. (1.15 ± 0.21) mg/L,hs-CRP (3.86 ± 1.15) mg/L vs. (3.93 ± 1.09) mg/L,P﹥0.05). Conclusion Satains Statins may prevent this procedure by anti-inflammatory and anti-oxidative-stress mechanism. Different statins with conventional doses may have the same effect of in the prevention of CIN in patients with normal renal function.
10.Determination of diosgenin in Rhizoma Paridis by HPLC and TLC
Huifen LI ; Yuan PING ; Gang CHEN ; Junyan LI ; Jun HE ;
Chinese Traditional and Herbal Drugs 1994;0(02):-
Object To determine the contents of diosgenin in Rhizoma Paridis by HPLC and TLC. Methods ODS column was used in HPLC with mobile phase: acetonitrile water(90∶10), detection wavelength: 203 nm, column temperature: 35 ℃; silica gel plate was used in TLC with developer: cyclohexane ethyl acetate (4∶1), scan wavelength: 610 nm, reference wavelength: 420 nm. Results The linear ranges of HPLC and TLC were 1 2 - 7 2 ?g (r=0 999 8), 0 2 - 1 0 ?g (r=0 995 7). The average recovery and RSD were 102 2%, 3 39% (n=6) and 100 9%, 2 68% (n=6) respectively. Conclusion Both of two methods can be used for the quality control of diosgenin in Rhizoma Paridis.