1.Importance of secondary exploitation for Chinese materia medica in traditional Chinese medicine field
Chinese Traditional and Herbal Drugs 1994;0(07):-
To explore the Chinese materia medica (CMM) for the second time has been attached increasingly importance in recent years. The author discusses the importance of the secondary exploitation to the development of traditional Chinese medicine (TCM). At the same time, the author analyzes the current situation of TCM, and points out that the advantages and disadvantages of TCM. They are complicated with each other, and this complicated situations have brought about the difficulties of development of TCM. So the author brings forward that the secondary exploitation for CMM is a positive approach to solve the current problems, for it not only adapts to the complexion of exploring the new drug, but also keeps inherent characteristic of TCM, and aims at the disadvantages of the traditional techniques of TCM. In addition, the author recounts the method of secondary exploitation for CMM from choosing the object, deepening the base research to reforming the techniques. In the end, the author tables some proposals for the secondary exploitation for CMM.
2.Advances in research on molecular design of antimicrobial peptides
Xingdong LIU ; Qingbin MENG ; Qingguo MENG
Military Medical Sciences 2014;(5):396-399
Antimicrobial peptides ( AMPs) are a kind of micromolecular peptides with antibacterial , antivirus and anti-tumor activities.Unlike conventional antibiotics , acquisition of resistance by a sensitive microbial strain against AMPs is surprisingly improbable .AMPs are not widely used clinically due to their toxicity , susceptibility to proteolysis and high manufacturing cost .Researchers have obtained some AMPs with high activity and low toxicity by structure modifications . The molecular design of AMPs as well as their development in the future are reviewed .
3.Treatment of Prostatic Hyperplasia by Plum-blossom-magnet-needle Synthetic Therapy:A Report of 149 Cases
Qingguo LIU ; Heyu GAO ; Yijun CUI
Journal of Acupuncture and Tuina Science 2005;3(2):55-58
Purpose: To observe the therapeutic effect of plum-blossom-magnet-needle synthetic therapy on benign prostatic hyperplasia (BPH). Method: 219 cases of BPH patients were randomly divided into two groups. There were 149 cases in treatment group, which treated by pressing, needling with plum-blossom-magnet-needle and putting effect-increasing pads on Prostate Reflex Area, bilateral Zhongliao (BL 32), Neck 1, Neck 7, Mingmen (GV 4) and Yongquan (KI 1). There were 70 cases in control group, which treated by orally taken Terazosin Hydrochloride (Gaoteling) tablets, 2 mg/time, twice a day. The therapeutic course was 4 weeks.After one therapeutic course, the therapeutic effect was evaluated. Results: The marked effect rate was 63.3% and total effective rate was 91.8%; in the control group, there were no markedly effective cases and the total effective rate was 72.7%. There was a significant difference between two groups (P<0.05). Conclusion: The plum-blossom-magnet-needle synthetic therapy had a significant therapeutic effect for the treatment of benign prostatic hyperplasia (BPH), so it was a safe and effective therapy for BPH.
4.Advances of targeting heat shock protein 70 drugs
Zongliang LIU ; Renmei ZHANG ; Qingguo MENG
Journal of China Pharmaceutical University 2017;48(4):416-424
Heat shock protein 70 (HSP70) family is one ofthe most conserved proteinin evolutionand plays critical,role in proteostasis.HSP70 is becoming an interesting target for multiple diseases such as cancer and Alzheimer's disease.There are many drugs targeted to HSP70 in preclinical study.In this review,the classification,the structure,the function of HSP70,and the drugs of the HSP70 family are reviewed.
5.F-ATPase subunit uncEBF mRNA expression in Streptococcus mutans clinical isolates
Deqin YANG ; Tianjia LIU ; Qingguo QI
Journal of Practical Stomatology 2000;0(06):-
Objective:To investigate the gene expression variety of different genotype of F-ATPase subunit uncEBF in Streptococcus mutans (S.mutans) and to evaluate the relationship among uncEBF gene expression levels, genotypes and the acidurance ability of S.mutans. Methods:The relative expression quantity of uncEBF gene against the housekeeping gene recA was determined by the two-step method of semi-quantitative RT-PCR in 18 clinical isolates of S.mutans(7 with genotype A uncEBF and 11 with genotyp B,10 with high acidurance and 8 with low). A gel documentation system and QUANTITY ONES software were used to assay the data. Results:uncEBF mRNA expression level in the isolates with genotype A uncEBF was higher than that in those with genotype B(P
7.Discussion on Specifications of “Nine Needles” inThe Internal Canon of Medicine
Meng XU ; Yingying ZHANG ; Jinyan LIU ; Qingguo LIU
Chinese Journal of Information on Traditional Chinese Medicine 2014;(8):7-10
As a normative technical term, “nine needles” appears repeatedly inThe Internal Canon of Medicine, in which Miraculous Pivot set theNine Needles and Twelve Source Acupoints as the first passage. Therefore, the significance of “nine needles” is evident. This article expounded “nine needles” from the following six aspects:the origin, the name, the types, the functions, the use and the application, with a purpose to standardize the contents of “nine needles”, and analyse the connotation.
8.Advances of resveratrol synthase gene in the application of genetic engineering and biofunctional investigation.
Shigang ZHENG ; Zhen LI ; Shancang ZHAO ; Qingguo WANG ; Wei LIU
Chinese Journal of Biotechnology 2014;30(3):341-354
Resveratrol synthase (RS) plays a key role in resveratrol (Res) biosynthesis. RS gene has been formerly reported to be transformed into many plant species and microorganisms, and to play certain roles in metabolic and regulation processes. In this paper, the transformations of RS gene in plants, and the related changes of biological properties, such as metabolites, anti-pathogen activities, anti-radical properties, and developmental characters in transgenic plants, as well as the production of resveratrol in microbes by utilizing RS gene were summarized. Moreover, the application prospects of RS gene in bioengineering were also addressed.
Acyltransferases
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genetics
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Genetic Engineering
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Plants, Genetically Modified
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enzymology
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genetics
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Stilbenes
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metabolism
9.Effects of femoral nerve block combined with celecoxib on postoperative analgesia in elderly patients with hip fracture
Xuebing LIU ; Ke SUN ; Dazhi ZHANG ; Qingguo YANG
Chinese Journal of Anesthesiology 2011;31(1):40-43
Objective To investigate the effects of femoral nerve block combined with celecoxib on postoperative analgesia in elderly patients with hip fracture. Methods Two hundreds ASA -Ⅲ patients aged 65-89 yrweighing 35-90 kg undergoing hip fracture surgery were randomly divided into 4 groups ( n = 50 each):control group (group Ⅰ ), femoral nerve block group ( group Ⅱ ), celecoxib group (group Ⅲ ) and femoral nerve block +celecoxib group (group Ⅳ ). Operations were performed under combined spinal-epidural anesthesia. Groups Ⅲand Ⅳ were given oral celecoxib 400 mg at 1 h before operation, and 200 mg at 1 and 2 days after operation twice a day. Groups Ⅰ and Ⅲ received iv injection of sufentanil 0.06 μg/kg before the patients were placed in the position, while in groups Ⅱ and Ⅳ femoral nerve block was performed using a nerve stimulation with 20 ml of 0.5%ropivacaine and 10 min later the patients were placed in the position. All the patients received postoperative patient-controlled intravenous analgesia with sufentanil to maintain visual analogue scale score ≤ 3. The condition of satisfactory analgesia and sufentanil consumption within 24, 48 and 72 h were recorded. The coagulation function was measured on the day of admission to the hospital, at 1 day before operation and at 4 days after operation. Cardiac troponin Ⅰ (cTnI) concentrations were measured before operation, at the end of operation and at 1 day after operation. Postoperative complications was observed and recorded. Results Compared with group Ⅰ , the consumption of sufentanil was significantly reduced during each period in group Ⅳ ( P < 0.01 ). Compared with group Ⅱ , the consumption of sufentanil was significantly reduced within 48 and 72 h after operation (P < 0.05), while no significant change was found within 24 h after operation in group Ⅳ ( P > 0.05). Compared with group Ⅲ , the consumption of sufentanil was significantly reduced within 24 h after operation ( P < 0.05 ), while no significant change was found within 48 and 72 h in group Ⅳ ( P > 0.05). The level of satisfactory analgesia was significantly higher in group Ⅳ than in the other three groups, and in groups Ⅱ and Ⅲ than in group Ⅰ ( P < 0.05). The 4 groups were comparable with respect to the increased rate of cTnI concentrations at the end of operation and after operation, and perioperative blood coagulation. No postoperative complications were found in the 4 groups. Conclusion Femoral nerve block combined with celecoxib can reduce postoperative opioid consumption and enhance postoperative analgesia in elderly patients with hip fracture.
10.Construction and eukaryotic expression of recombinant plasmid pEGFP-N1-SrV+encoding the variable region of the surface protein of Streptococcus mutans
Kuifang HE ; Xiaoguang YU ; Yihuai PAN ; Jianguo LIU ; Qingguo QI
Chinese Journal of Microbiology and Immunology 2011;31(4):324-329
Objective To construct the recombinant plasmid pEGFP-N1-SrV+ and evaluate the expression of SrV+in mammalian 293T cells.nethods srv+.a gene encoding the vailable region of the surface protein of the Streptococcus mutans OMZ175.was cloned chemically based on its reported nucleotide sequence.The eukaryotic expression plasmid,pEGFP-N1-SrV+,was constructed by introducing the srv+ gene into the Kpn Ⅰ/Xho Ⅰ site of pEGFP-NI.The recombinant plasmid pEGFP-N1-SrV+was transfected into 293T cells with lipofectamine and the expression level of SrV+was evaluated.Results The eukaryotic expression plasmid pEGFP-N1-SrV+was constructed successfully.GFP was observed by green fluorescent microscope.and a 72 × 1 03 protein was detected bv Westem blot.Real-time RT-PCR analysis revealed that the expression of the pEGFP-N1-SrV+in 293T was excellent and significant compared the control group. Conclusion The recombinant plasmid pEGFP-N1-SrV+was successfully constructed.which could encode the expression of SrV+after transfected into the mammalian 293T Cells.