1.Nicardipine vs labetalol in treating acute and severe hypertension
Chinese Journal of New Drugs and Clinical Remedies 2001;20(3):182-184
AIM: To compare the therapeutic effects and adverse reactions of nicardipine and labetalol injection in treating acute and severe hypertensions. METHODS: Sixty-seven patients in nicardipine group (M 46, F 21; age 52 a± s 11 a) were given nicardipine 2 mg in 0.9 % sodium chloride or 5 % glucose injection 10 mL within 2 min iv, first, and then given 30 mg nicardipine in 0.9 % sodium chlocide or 5 % glucose injection 250 mL by continual intravenous infusion for 6 h. Sixty-one patients in labetalol group (M 41, F 20; age 53 a±9 a) received 50 mg labetalol in 5 % glucose injection 20 mL by intravenous once. The treatment could be repeated every 15 min, in case it was less effective, but the total dose should be no more than 200 mg. RESULTS: The treatment for the nicardipine group and the labetalol group, reached the marked effect within 5 min. The total marked effective rate was all 100 % (P>0.05). Severe adverse reactions occured in the two patients (one occured significantly lowering of blood pressure, and the other aggravated asthma) in the labetalol group. CONCLUSION: Intravenous nicardipine and labetalol are fast and smooth in reducing the blood pressure of the patients with acute and severe hypertension, but the safety of nicardipine is superior to that of labetalol
2.In vitro study evaluating the effect of different subgingival root exposure methods and ferrule designs on fracture resistance of residual root.
Qingfei MENG ; Lijuan CHEN ; Jian MENG
West China Journal of Stomatology 2014;32(1):75-79
OBJECTIVETo evaluate the effect of different subgingival root exposure methods, namely, crown lengthening or forced eruption, and different ferrule lengths on fracture resistance of a residual root restored with a carbon fiber post-and-core system.
METHODSFifty-six extracted endodontically-treated mandibular first premolars were sectioned 1.0 mm coronal to the buccal cementoenamel junction. All the models were divided randomly into seven groups that each consist of eight roots. Group A was given non-ferrule as control. Simulated crown lengthening was performed for the dentin ferrule design in the cervical tooth structure for Groups B, C, and D with a ferrule length of 1.0, 2.0, and 3.0 mm, respectively. Simulated forced eruption was performed with a ferrule length of 1.0, 2.0, and 3.0 mm in the cervical tooth structure for Groups E, F, and G, respectively. After restoration with prefabricated carbon fiber post-and-core system, each specimen was embedded in a self-cured acrylic resin block from 2.0 mm apical to the margins of a cast Ni-Cr alloy crown, then loaded at 150 degrees from the long axis in a universal testing machine at a crosshead speed of 1.0 mm min(-1) until fracture. Data of failure loads and fracture mode were recorded and analyzed.
RESULTSMean failure loads for Groups A to G were (1.13 +/- 0.15), (1.27 +/- 0.18), (1.02 +/- 0.11), (1.05 +/- 0.12), (1.63 +/- 0.14), (1.92 +/- 0.19), and (1.93 +/- 0.15) kN, respectively. The effects of root exposure method and ferrule design differed significantly, and two factors exhibited significant interaction (F=33.396, P<0.0001). When the ferrule lengths were the same, fracture loads in the simulated forced eruption groups were significantly higher than those of the simulated crown lengthening groups (P<0.001). No statistical differences in fracture mode were observed among all groups (P=1.00).
CONCLUSIONMore than 1.0 mm ferrule placement on the apical crown margin by using forced eruption significantly increases fracture resistance.
Bicuspid ; Crowns ; Dental Stress Analysis ; Humans ; In Vitro Techniques ; Post and Core Technique ; Tooth Fractures ; Tooth Root
3.Research progression of ?-SYN in Cancer
Journal of International Oncology 2006;0(11):-
?-Synuclein (?-SYN ) .previously identified as a breast cancer specific gene, has a wildly tumor expression profile mainly in advanced stage. As a special chaperone,?- SYN stimulates the proliferation and metastasis of tumor cells through interacting with estrogen receptor and (or) BubR1. Meanwhile, it is also detectable in the serum or urine from tumor patients, which indicates that?- SYN could be potential as a tumor marker for diagnosis and prognosis.
4.The role of nuclear factor-κB pathway on carcinogenesis and therapy of thyroid cancer
Zhaowei MENG ; Qiang JIA ; Jian TAN
Chinese Journal of Nuclear Medicine and Molecular Imaging 2014;34(5):415-418
The incidence rate of thyroid cancer is increasing very rapidly during the past years.131I treatment for DTC is an effective method.However,DTC refractory to 131I treatment or therapeutic failure is not uncommon.High level expression of nuclear factor-kappa B (NF-λB) in thyroid cancer is closely related with carcinogenesis,progression,anti-apoptosis and therapeutic resistance.NF-κB inhibitor was effective for the treatment of thyroid cancer.Combined NF-κB inhibitor with131I may improve the therapeutic efficacy.
5.Practice and thoughts on encouraging performance management with performance negotiation
Jian ZHANG ; Yafeng MENG ; Tao LUO
Chinese Journal of Hospital Administration 2015;(7):506-508
Performance management is a key strategy tool for a hospital to achieve its planned goals,and performance negotiation plays a key role in performance management which consists of performance planning,execution,evaluation and feedback.The negotiations emphasize differently in the negotiations,as short of which effective performance management is out of the question.To cultivate an incentive-oriented negotiation culture and build a negotiation system make a great difference in solving problems of performance management and promoting efficacy of hospital performance management.
6.Correlation analysis between outcome of exophthalmos and curative effect of hyperthyroidism in Graves disease after 131I therapy
Liang YIN ; Jian TAN ; Zhaowei MENG
Chinese Journal of Postgraduates of Medicine 2012;35(1):33-36
ObjectiveTo analyze the association between the outcome of exophthalmos and the curative effect of hyperthyroidism in Graves disease after 131I therapy.Methods Five hundred and thirty-eight cases of Graves disease accompanied with exophthalmos and hyperthyroidism who received 131I therapy from January 2001 to January 2010 were reviewed retrospectively,and the association between the outcome of exophthalmos and the curative effect of hyperthyroidism was analyzed.ResultsThe effective rate of hyperthyroidism after 131I therapy was 94.8% (510/538).The effective rate of exophthalmos after 131I therapy was 73.2%(394/538).And the effective rate of hyperthyroidism with exophthalmos was 71.6% (385/538).The incidence of improvement,inefficiency,exacerbation was 75.5% (385/510),21.0% (107/510),3.5%( 18/510) in hyperthyroidism effective patients ( 510 cases ) and 32.1% ( 9/28 ),50.0% ( 14/28 ),17.9% ( 5/28 )in hyperthyroidism ineffective and recrudescence patients(28 cases),there was significant difference between the two patients (P < 0.05 ).The incidences of improvement,inefficiency,exacerbation were 78.1%(281/360),18.9%(68/360),3.1%(11/360) in hyperthyroidism cured patients(360 cases),78.2%(36/46),17.4% (8/46),4.3% (2/46) in hypothyroidism patients(46 cases),there was no significant difference between the two (P > 0.05 ).The incidence of improvement,inefficiency,exacerbation was 86.4% ( 229/265 ),9.8%(26/265 ),3.8%( 10/265 ) in mild exophthalmos after 131I therapy(265 cases),59.9%(106/177),35.6%(63/177),4.5%(8/177) in moderate and severe inactive exophthalmos after 131I therapy( 177 cases),there were significant differences in the inciclence of improvement and inefficiency between the two patients (P<0.05).For patients with moderate and severe active exophthalmos,glucocorticoids therapy could obtain satisfactory effect.Conclusion131I therapy is an effective method for Graves disease with exophthalmos,and there is a significant association between the outcome of exophthalmos and the curative effect of hyperthyroidism.
7.Construction and target gene expression of recombinant adenovirus vectors containing vascular endothelial growth factor 165 and angiopoietin-1
Jinkang ZHANG ; Guolin MENG ; Jian LIU
Orthopedic Journal of China 2006;0(04):-
[Objective]To construct the recombinant adenovirus vector co-expressing human vascular endothelial growth factor 165(VEGF165) and angiogenin-1(Ang-1),and to observe the expression of target gene after transfection.[Method]Molecular biologic techniques were used to clone the genes of VEGF165 and Ang-1,and PCR was used to amplify the DNA sequence of IRES(internal ribozyme entry site) from pIRES2-EGFP.The genes of VEGF165,IRES and Ang-1 were subcloned to pTrack-CMV one by one to get the plasmid named pTrack-CMV-VIA,which contained all the three genes.The linearized shuttle plasmid was cotransformed into BJ5183 bacteria with backbone vector AdEasy-1.Further the recombinant plasmid was packaged and amplified in QBI-293A cells after Pac I digestion to get adenovirus vector pAd-VIA.The expression of the gene of interests was evaluated by fluorescence microscopic analysis of GFP expression and enzyme linked immunosorbent assay(ELISA).[Result]The recombinant adenovirus plasmid was consistent with that shown by sequencing and restriction endonucleases digestion.The recombinant pAd-VIA vector was packaged and amplified successfully in QBI-293A cells.The titer was 2?1010 PFU/ml after amplifying.High positive GFP was expressed in the field through fluorescence microscopy after being transfected by recombinant pAd-VIA.ELISA indicated the expression of the target genes.The difference between the tansfected and non-transfected group was significant(P
8.Advances in effects and mechanisms of ADAMs in tumor progression
Qin CHEN ; Linghua MENG ; Jian DING
China Oncology 2001;0(02):-
ADAMs is a family of transmembrane proteins with multi domains and multiple functions,which play important roles in many(patho-)physiological processes.They are upregulated in a variety of tumors and possess protein shedding and adhesive activities,which showed that they could be useful as tumor biomarkers and promising targets for designing new anti-tumor drugs.This review focuses on the roles ADAMs play in the process of tumor development and the potential application in cancer therapy.
9.Preparation of rh-BMP-2 loaded chitosan microsphere and its properties in vitro
Xin HUANG ; Guolin MENG ; Jian LIU
Orthopedic Journal of China 2006;0(15):-
85%).From the in vitro release experiment,the rhBMP-2 was controlled to release from the chitosan microsphere over 30 days.[Conclusion]The rhBMP-2 loaded chitosan microsphere prepared by emulsion cross-linking method shows a good controlled release property.Such a novel type of controlled release system has the potential of being applied for controlled cytokine delivery and the bone tissue engineering.
10.Mutation analysis of dystrophin gene and clinical evaluation of phenotypes in X-linked dilated cardiomyopathy.
Jian LIU ; Ye TIAN ; Fanchao MENG
Chinese Journal of Practical Internal Medicine 2003;0(01):-
T is the etiologic mutation in this family.Screening of female carrier state and follow-up study of the confirmed carriers are important for X-liked DCM family.