1.Effect of CO2 laser treatment combined with indwelling bubble technique against condyloma acumi-natum on reduction of wound hemorrhage
Xirong LEI ; Caili LIU ; Yuyan GUAN
Chinese Journal of Practical Nursing 2009;25(12):51-52
Objective To discuss effect of indwelling bubble technique combined with CO2 laser treatment against condyloma acuminatum on reduction of wound hemorrhage. Methods 400 patients with condyloma accuminatum were divided into the control group and the experimental group with 200 patients in each group, traditional oppression for hemostasis and bubble retention hemostasis were used in CO2 laser treatment against condyloma acuminatum respectively.The effect of each group was compared with χ2 and t test. Results The relapse rate and hemorrhage rate in the experimetnal group was lower than those of the control group. Conclusions With indwelling bubble technique after infiltration anesthesia of local skin in the treatment of condyloma accuminatum by CO2 laser, the operator can work under clear vision and the op-eration quality can be increased.
2.Content Determination of Sinomenine Hydrochloride in Sinomenine Hydrochloride External Applied Powder by HPLC
Chinese Journal of Information on Traditional Chinese Medicine 2006;0(11):-
Objective To establish a method for the determination of content in Sinomenine Hydrochloride external applied powder. Methods Diamonsil ODS C_(18) (250 mm ? 4.6 mm, 5 ?m) column was used in HPLC with mobile phase of phosphate buffer (0.01 mol/L K_2HPO_4 solution, and 1%0 triethylamine, pH was adjusted to 3.0)-MeOH (80 : 20). The flow rate was 1.0 mL/min and the detection wavelength was 265 rim. Results The linear range of Sinomenine Hydrochloride was 0.446~4.46 ?g and the regression equation was Y=9.01 ? 10~6X+102803 (r=0.9999). The average recovery was 99.2%, RSD=0.68% (n =9). Conclusion This method is rapid and accurate with good reproducibility. It can be applied to control the quality of Sinomenine Hydrochloride external applied powder.
3.Progress in the study of near-infrared fluorescent probes for the detection of β-amyloid deposition in Alzheimer's disease.
Lei DU ; Haiwei FENG ; Yuyan LI
Acta Pharmaceutica Sinica 2015;50(5):528-34
Alzheimer's disease (AD) is the most common cause of cognitive impairment in older people. With the aging of society is more and more serious, AD caused great burden to patients and society. A β is a classical biomarker of AD, which has been widely used in clinical diagnosis of AD patients. Compared with positron emission tomography (PET) and single photon emission computed tomography (SPECT), near infrared fluorescence imaging has many advantages including highly sensitive, non-invasive, safety and inexpensive. Therefore, many research groups have focused on developing the molecular probes of near-infrared fluorescence (NIRF) imaging. In this article, we will review the progress of the probes of NIRF.
4.Expression of orexin A and leptin in alimentary obesity rat and its clinical significance
Yuyan ZHAO ; Lu WANG ; Dongjie MA ; Lei TIAN ; Delu ZHENG
Chinese Journal of Geriatrics 2011;30(8):684-686
Objective To evaluate the relationships of the expression of orexin A in hypothalamus with hyperleptinemia, hyperinsulinism, and hyperlipidemia in alimentary obesity rats.Methods The alimentary obesity rat model was induced by high-fat diet in Wistar rats. The levels of leptin, insulin, C-peptide, total cholesterol (TC) and triglyeride (TG) were detected by luminescent immunoassay and biochemistry enzymic method. The gene expression of orexin A in rat hypothalamus was detected by real-time PCR. The correlation between orexin A and leptin was analyzed. Results After 8 weeks of high-fat diet feeding, the body weight, Lee's index, blood glucose, TG and TC significantly increased in obesity rat group (P<0. 01). The levels of serum leptin, insulin and C-peptide were significantly higher in obesity rats than in controls [( 1.74±0. 36)μg/Lvs. (1.27±0.11) μg/L, (35±5) MIU/L vs. (23±4) MIU/L, (0.21±0.04) μg/L vs.(0. 14±0. 03) μg/L respectively, P<0.01]. However, the level of orexin A mRNA was lower in obesity rats than in controls (6.8±2.3 vs. 14.5±3.6, t=-8.06, P<0.01). The correlation coefficient (r) of orexin A mRNA with serum leptin, insulin, and C-peptide in alimentary obesity rat were -0. 726 (P<0.01), -0. 506 (P<0.01) and -0. 664 (P<0.01), respectively. Conclusions High-fat diet can induce leptin-resistance and alimentary obesity in Wistar rat. The down-regulation of orexin A in rat hypothalamus would be correlated closely to the leptin and insulin resistance in alimentary obesity.
5.Studies of cytotoxin from guangxi cobra venom on its purification and cytotoxic effects on the nasopharyngeal and other cancer cells
Danqing LEI ; Qiuyan WANG ; Mianlin LIU ; Yuyan SHU ; Shengxi TANG
Chinese Pharmacological Bulletin 1987;0(01):-
AIM To study the inhibitory effect of the cytotoxin (CTX) from guangxi cobra venom on human nasopharyngeal cancer cell (CNE) and other tumons cells. METHODS The cytotoxin was isolated and purified from Guangxi cobra venom by successive chromatography on Sephadex G-50 and CM Sepharose CL-6B columns. Its cytotoxic effects and does-effect relationship on human tumors cell lines were examined by MTT assay. RESULTS The inhibitory effects of CTX CM-5 on CNE, human ovarian carcinoma cell (Ho8990), uterus cervical carcinoma cell (HELA) and lymphoma (YAC) cell lines showed a definite does-effect relationship. The IC 50 (48 h in cubation) was 1.84, 2.59, 1.84 and 0.75 mg?L -1 respctively. The inhibitory effects of CTX CM-5 on CNE increased with time. The IC 50 (3 h and 24 h cubation) was 4.78 and 1.04 mg?L -1 respctively. CONCLUSION CTX from Guangxi cobra venom exhibites strong suppressive effect on cultured tumor cells line in vitro.
6.Difference of Apolipoprotein E promoter polymorphism distribution between Kazak and Han patients with coronary heart disease in Xinjiang
Shexue TAO ; Jinxing LI ; Yuyan LEI ; Shuang LIN
Chinese Journal of Immunology 2014;(11):1540-1542
Objective:To study the Xinjiang Kazakh,Han nationality patients with coronary heart disease apolipoprotein E gene promoter region rs405509 (G-T),rs449647 (A-T),rs7259620 (G-A) whether there exist differences in the two national distribution between loci polymorphism.Methods:201 cases were studied.DNA product was extracted by using the PheNol-chloroform method and the PCR outcome was purified.We take advantage of multiple single base extension reaction to make DNA Sequencing on The ABI3130XL.Results: The Kazak and Han patients in Xinjiang area in the apolipoprotein E gene promoter rs449647 ( A-T) was statistically significant differences in genotype and allele in two ethnic groups (P<0.05),rs405509 (G-T) loci and rs7259620 (G-A) genotype and alleles in two ethnic groups had no difference statistical significance ( P>0.05).Conclusion:Apolipoprotein E promoter rs449647 ( A-T ) genotype and allele polymorphism have significant differences between Han nationality and Kazak nationality in Xinjiang,others have no statistic difference between the two ethnic groups.
7.Effect of high-fructose diet on hypothalamic orexin system in rats
Yuyan ZHAO ; Lei GUO ; Jian DU ; Guoliang LIU
Chinese Journal of Endocrinology and Metabolism 1985;0(01):-
Orexin is a new neuropeptide related to diet intake and regulation of endocrine and metabolic functions. Rat model with insulin resistance (IR) was induced by high fructose diet and the extent of IR was assayed by hyperinsulinemic euglycemic clamp technique. The results showed that high fructose diet might induce IR and results in disturbance between orexin and leptin. Blood glucose, serum insulin, lipid metabolism and leptin may participate in the regulation of orexin.
8.Superselective intra-arterial contact thrombolysis and balloon mechanical expanding in treatment of acute cerebral infarction
Zhen GU ; Chenguo DAI ; Yongde LEI ; Lei WANG ; Yuyan CHEN ; Yajie LI ;
Chinese Journal of Emergency Medicine 2006;0(10):-
Objective To explore the feasibility and safey of superselective intra-arterial contact thrombolysis and balloon mechanical expanding in treatment of patients with acute infarction.Methods Five acute infarction patients were treated by superselective intra-artedal contact thrombolysis and balloon mechanical expanding within 9 hours after the first attack,including 2 cases of middle cerebral artery occlusion,1 case of anterior eerebral artery occlusion and 2 cases of internal carotid artery occlusion.Results The main occlusive arteries ineiting ischemic clinical symptom were all recanalized,and all patients had gotten better outeome.Conclusion Superselective intra-arterial contact thrombolysis and balloon mechanical expanding in acute infarction treatment is safe and efficient,and the ratio of recanalization was greatly improved.
9.Prediction of D-dimer levels on the clinical stage and pathological grade of patients with ovarian cancer
Rui CUI ; Peiling LI ; Lingdi WANG ; Lei FANG ; Xin MA ; Yuyan ZHANG
Chinese Journal of Postgraduates of Medicine 2012;35(27):18-19
Objective To investigate the relationship between D-dimer levels and the clinical stage and pathological grade of patients with ovarian cancer.Methods The clinical data of 66 patients with ovarian cancer whose D-dimer had been monitored before surgery were retrospectively analyzed.The relationship between D-dimer levels and the clinical stage,pathological grade was evaluated.Results D-dimer levels before surgery were uncorrelated with the patient's age (r =0.1324,P > 0.05 ).There was significant difference in D-dimer levels between FIGO Ⅰ + Ⅱ patients and FIGO Ⅲ + Ⅳ patients [(377.89 ± 183.85) mg/L vs.(858.03 ± 138.29) mg/L] (t =11.602,P<0.01).There was significant difference in D-dimer levels between high-moderately differentiated patients and poorly differentiated patients [(463.39 ±246.85) mg/L vs.(784.64 ±265.69) mg/L](t =4.983,P<0.01).Conclusions D-dimer levels are related with the clinical stage and pathological grade of patients with ovarian cancer.It can predict the harmful biological behaviour of ovarian cancer.
10.Value of renal CT scan in the evaluation of split renal function
Zeshou GAO ; Zhenhua LI ; Lei YIN ; Xiuyue YU ; Yuyan ZHU ; Yuanjun JIANG ; Wei ZHAO ; Chuize KONG
Chinese Journal of Urology 2012;33(10):763-766
Objective To study the value of renal CT scan in evaluating split renal function.Methods 147 patients undergone CT scan from June 2009 to June 2011 were involved in this study.There were 73 cases of obstructive hydronephrosis and 74 cases of renal tumors.66 patients were males and 81 were females with a mean age of 53 years ( range 17 - 87 years).GFR detected by single-photon emission computed tomography (SPECT) was used as the reference of split renal function.The kidneys were divided into 3 groups according to the GFR:normal renal function (113 cases,GFR ≥ 34 ml/min),mildly impaired renal function (66 cases,GFR:20 -34 ml/min) and severely impaired renal function (41 cases,GFR <20 ml/min).One-way ANOVA and linear regression analysis were used to analyze the relationship between the results of CT scan and split renal functions. Results There were significant differences in the cortical thickness among the normal renal function,mildly impaired renal function and severely impaired renal function groups.The cortical thicknesses were (0.62 ±0.11) cm,(0.45 ±0.10) cm and (0.26 ±0.07) cm,respectively (P < 0.01 ).The renal cortical thickness was strongly correlated with GFR (r =0.806,P <0.01 ).There were significant differences in the enhancement during the cortical phase among the 3 groups,which were (162.1 ±25.3) HU,(121.6 ±21.0) HU and (63.5 ±20.0) HU,respectively (P<0.01).The enhancement during the cortical phase was strongly correlated with the GFR (r =0.851,P < 0.01 ).The enhancement during the parenchymal phase and excretory phase was moderately correlated with the GFR ( r =0.467 and r =0.451,P < 0.01 ). Conclusions The renal cortical tbickness and the enhancement during the cortical phase detected by CT scan might be useful for the clinical evaluation of split renal function.