1.Study on barriers of policy and regulation of traditional Chinese medicine accessing international markets and its countermeasures
International Journal of Traditional Chinese Medicine 2012;34(1):28-32
We analyzed and sorted the policies and regulations of traditional medical management in international markets which also affecting traditional Chinese medicine and summaried current situation of barriers of policy and regulation of Ttraditional Chinese medicine.After thoroughly analyzing the reasons of barriers of policy and regulation of traditional Chinese medicine,we found that the reasons lied in culture difference between China and western countries,quality of traditional Chinese medicine,low level of R&D and manufacturing,incomplete domestic laws and regulations of traditional Chinese medicine,lack of anti-technical barriers to trade service system.In the end of this paper,we came up with some countermeasures of barriers of policy and regulation when traditional Chinese medicine accessing international markets.
2.Effect of different doses of cyclophosphamide on drug-resistance of implanted human lung cancer in nude mice
Journal of Third Military Medical University 2003;0(16):-
Objective To explore the effect of different doses of cyclophosphamide(CTX) on the drug-resistance of implanted human A549 lung cancer in nude mice,and investigate the anti-tumor effect and toxicity.Methods BALB/c nude mice bearing A549 lung carcinoma were randomized into low-dose metronomic(LDM) CTX group,maximum tolerate dose(MTD) CTX group and normal saline group.The changes of tumor volume,weight and toxicity were observed.Expression of glutathione S-transferase-?(GST-?) and lung resistance-related protein(LRP) in the tumor were detected by immunohistochemistry SP method.Results In LDM CTX group,the tumor grew fast at first,then slowed down gradually and grew slowly for a long time,while in MTD CTX group tumor grew slowly at first,then it accelerated.Side effects of chemotherapy:the weight of nude mice was lost persistently in MTD CTX group,while lost insignificantly in LDM CTX group.No obvious toxicity was observed in LDM CTX group.GST-? and LRP expression in LDM CTX group were not significantly different from those in the control,but significance was seen in MTD CTX group compared with those in the control(P
3.Study of strategies on traditional Chinese medicine accessing Australian market
International Journal of Traditional Chinese Medicine 2011;33(6):511-514
Australia is a country with strict drug administration, which is hard for its market access. Chinese Medicine Registration Act 2000 enacted by Victoria State of Australia established the legal status of traditional Chinese medicine in Victoria State, which made Australia the first one of western nations to legislate traditional Chinese medicine. We should take advantage of this opportunity to give in-depth analysis of laws and regulations on traditional Chinese medicine in Australia to push on traditional Chinese medicine to enter the Australia market. By analyzing the regulations of traditional Chinese medicine in Australia market, we put forward the following strategies on traditional Chinese medicine accessing Australia market: first, we should strengthen cooperation of Chinese and Australian governments; secondly, we should focus on analysis of regulations of drugs of Australia, thirdly, we should establish technical standard of herbal drugs in conformity with international standard; finally, we should strengthen traditional Chinese medicine culture exchange.
4.The effect of Skp2 gene silencing on the proliferation and apoptosis of SPC-A-1 lung cancer cells
Chongqing Medicine 2016;45(17):2334-2336,2339
Objective To investigate the effect of Skp2 gene silencing on the proliferation and apoptosis of SPC-A-1 lung cancer cells .Methods Specific small hairpin RNA (shRNA ) targeting Skp2 gene was introduced into lung cancer cells by Lipo-fectamine 2000 and the positive clones were screened by G418 .The Skp2 mRNA and protein expression level of lung cancer cells were detected by RT-PCR and Western blot .M TT method and flow cytometry (FCM ) analysis were used to observe the effect of RNAi on proliferation of lung cancer cells .Cell apoptosis was analyzed by FCM .Results Transfected with Skp2 shRNA expression vector significantly reduced the expression of Skp2 protein in lung cancer cells .Inhibition efficiency was respectively (75 .3 ± 5 .1) , (70 .4 ± 3 .2) .P27 protein expression was increased significantly in lung cancer cells .The growth of lung cancer cells transfected with Skp2 shRNA was blocked ,with Gl phase cells increased and S phase cells decreased .The apoptosis rate of cancer cells was higher in Skp2 shRNA groups than in control groups .Apoptosis rates were (17 .5 ± 2 .8)% ,(15 .6 ± 3 .1)% in Skp2 shRNA groups .Conclusion Specific inhibition of the expression of Skp2 can slow down the growth of lung cancer cells ,increase cell apop-tosis .
5.Loss of heterozigosity of nm23-H_1 gene might induce lymph node metastasis in no-small-cell lung cancer
Tonghua MEI ; Changyi LI ; Ailon HUANG
Journal of Third Military Medical University 2002;0(12):-
Objective To explore the relationship between the loss of the heterozygosity of nm23-H_1 and the lymph node metastasis in no-small-cell lung cancer (NSCLC). Methods The loss of the heterozygosity of nm23-H_1 gene of cancer tissue and peri-cancerous tissue was detected in 39 patients with NSCLC by Southern blotting. Results The heterozygosity gene of nm23-H_1 is 7.6 kb and 2.3 kb. The LOH rate of the patients with lymph node metastasis (48%, 12/25) was higher than those without lymph node involvement (8%, 1/11) (P
6.Treatment of hypertensive intraventricular hemorrhage by urokinase
Guangyang REN ; Yuyu WANG ; Tonghua LIU ; Gang LI ; Yi LI
Journal of Third Military Medical University 2003;0(15):-
Objective To discuss the feasibility,efficiency and safety of urokinase application in patients with hypertensive intraventricular hemorrhage.Methods Sixty-nine patients were included,30 treated with ventricular drainage alone and 39 receiving adjunctive intraventricular urokinase.CT images and ADL scores were compared between the two groups.Results The intraventricular thrombolysis with urokinase significantly hastened the resolution of intraventricular blood clots as compared with ventricular drainage alone(P=0.030),with better outcome(P=0.029).Conclusion Urokinase application is a simple,effective,and safe in managing hypertensive intraventricular hemorrhage.
7.Construction of Skp2 shRNA and its effect on lung cancer cell growth
Sheng LI ; Tonghua MEI ; Lian LI ; Mingchuan ZHANG
Journal of Third Military Medical University 2003;0(13):-
Objective To construct and identify the RNAi eukaryotic vector of Skp2 gene and to observe its interfering effect on the growth of SPC-A-1 lung cancer cells.Methods The specific shRNA sequence was designed and synthesized according to the Skp2 cDNA sequence in GenBank.The sequence was cloned into plasmid pGenesil-1.Then recombinant vector was transfected into SPC-A-1 lung cancer cells by Lipofectamine 2000.The expressions of Skp2 mRNA were analyzed by RT-PCR and the levels of Skp2 protein were detected by Western blot.The cell growth suppression was analyzed by MTT assay.Distribution of cell cycle was assessed by flow cytometry.Results The sequence of template and specific siRNA was correct by sequence analysis.Obvious decrease was observed in the levels of Skp2 mRNA and Skp2 protein after Skp2 shRNA transfection(P
8.Study on green trade barriers of traditional Chinese medicine accessing international markets
Ping WU ; Xia ZHAO ; Qi LI ; Tonghua LIU
International Journal of Traditional Chinese Medicine 2012;34(11):964-967
With the increasing trade amount of herbal medicine over the world,many foreign countries took non-tariff barriers such as technical regulations,technical standard and conformity assessment procedures,of which the most far-reaching impact of green trade barriers on the export of traditional Chinese medicine.We analyzed the three green trade barriers faced by the traditional Chinese medicine assessing international markets,and summarized the impacts of green trade barriers on the export of traditional Chinese medicine from the two aspects of positive and negative.In the end of this study,we came up with some strategies to deal with green trade barriers:to promote the establishment of standard system; to ensure the quality of traditional Chinese medicine products; to implement green production; to cultivate environmental awareness; to pursue international certification; and to enhance corporate brand image.
9.Effects of Gymnema Sylvestre on glucose-lipid metabolism and adipo-cytokines in Type 2 DM Rats
Juane LI ; Lei WANG ; Lingling QIN ; Tonghua LIU
International Journal of Traditional Chinese Medicine 2011;33(2):121-124
Objective To investigate the effects of Gymnema Sylvestre on glucose-lipid metabolism and adipo-cytokines in T2 DM Rats. Methods The T2 DM rats induced by high lipid diet and small dosage intraperitoneal injection of STZ, were randomly divided into model group (DM), high dose GS group (GSH),low dose GS group (GSL) and pioglitazone group (Pio, n= 8 in each). Each group has a DM inserted by gavage.Four weeks later, the levels of fasting blood glucose (FBG), serum insulin (INS), blood lipid (TG, CHOL, HDL and LDL), free fatty acdi (FFA), TNF-α, C-reactive protein (CRP)and adiponcetin(ADPN) were detected.Results Compare to model group, the levels of FBG, INS, Blood lipid, FFA, TNF-α and CRP were decreased in GSH and Pioglitazone groups, adiponcetin were increased in GSH and Pioglitazone groups, except in GSL group. Conclusion GS can improve the glucose-lipid metabolism disorder and insulin resistance in type 2diabetic mellitus rats. The mechanisms may be the amelioration of inflammatory response and adipocytokines,but still need further study to prove the conclusions.
10.Study on policy and regulation of traditional Chinese medicine in Asian markets and its development countermeasures
Ping WU ; Xia ZHAO ; Qi LI ; Tonghua LIU
International Journal of Traditional Chinese Medicine 2012;34(9):775-778
We overviewed the policies and regulations of traditional Chinese medicine of main Asian countries and summarized current situation of policies and regulations of traditional Chinese medicine in Asian markets.After in-depth analysis,we found that the opportunities lied in high public awareness,some Asian countries establishing special traditional medicine management agencies,special Pharmacopoeia of traditional Chinese medicine in Japan and South Korea,and high degree of acupuncture legalization.At the same time,traditional Chinese medicine also faced with the challenges such as strict technical standard and TBT barriers.In the end of this paper,we came up with some development countermeasures when traditional Chinese medicine accessing Asian markets,such as improving technical standards,establishing an anti-technical barriers to trade service system,encouraging technological innovation,and strengthening domestic and international exchanges and cooperation.