1.Advance in acquired epileptic aphasia
International Journal of Pediatrics 2011;38(2):127-129
Acquired epileptic aphasia is an age-related epilepsy syndrome. It is an epileptic encephalopathy. The etiology and pathogenesis is unclear. There are many progresses in pathogens, such as of susceptibility genes, the mechanism of autoimmunity, and the disorders of metabolism in brain and so on. But each theory can only explain a part of clinic symptom. In the progress of treatments, more recent case series show that sulthiame and levetiracetam can be considered as effective drugs. There are also progresses in corticosteroid,intravenous immunoglobulims and surgery treatment. Other new methods, such as diet and sign language, are applied in clinical therapy.
2.Evaluation of Fallopian Tube Function After Laparoscopic Salpingotomy for Ectopic Pregnancy
Chinese Journal of Minimally Invasive Surgery 2015;(7):607-609
Objective To assess patient ’ s fallopian tube function after laparoscopic salpingotomy for tubal ectopic pregnancy.Methods We observed the degree of pelvic adhesion and previous tubal patency by laparoscopic secondary exploration. The fallopian tube function were evaluated in 24 cases ( 26 fallopian tubes ) which had experienced laparoscopic salpingotomy. Results There were 4 cases of severe adhesions (16.7%), 4 cases of moderate adhesions (16.7%), 5 cases of mild adhesions (20.8%), and 11 cases of minor adhesions (45.8%).The status of fallopian tubes:tubal rapture and tissue absence were seen in 11 oviducts (42.3%), intact but obviously shortened oviduct with distal hydrops was seen in 11 oviducts (42.3%), and normal oviduct was recorded in 4 oviducts (15.4%).The methylene blue flow test was performed in the 26 tubes, showing 23 (88.5%) occluded and 3(11.5%) patent. Conclusions The fallopian tubes have incomplete shapes after laparoscopic tubal fenestration for ectopic pregnancy in most patients.We confirm that laparoscopic salpingotomy can not preserve the fertility effectively.
3.G-quadruplex Structures in Promoters of MET Proto-oncogene
Journal of China Medical University 2016;45(5):402-405
Objective To identify G?quadruplex structures in the promoter region of MET. Methods CD spectroscopy,UV spectroscopy,non?denatured electrophoresis and PCR stop assay were applied to indicate the G?quadruplex structure and its function. Results The Pu23WT se?quence in the promoter of MET adopted an intramolecular parallel G?quadruplex structure under physiological conditions in vitro,which can stop the extension of Pmet. Conclusion G?quadruplex structure in the promoter might inhibit MET gene expression in vivo.
4.Hemostatic property and cytotoxicity of the guanidine modified chitosan
Xinpei YAO ; Miaolei JING ; Jing GUAN
Chinese Journal of Tissue Engineering Research 2017;21(6):906-910
BACKGROUND:Chitosan is a kind of biomaterial with good hemostatic, antibacterial and absorption properties. The guanidine modified chitosan holding better antibacterial and absorption abilities is a commonly used chemical separation material. However, its coagulation property is still unclear. OBJECTIVE:To evaluate the in vitro hemostatic property and cytotoxicity of the guanidine modified chitosan, and to explore its availability as a hemostatic material.METHODS:The guanidine modified chitosan was synthesized with the raw materials of chitosan and arginine, and the coupling agents of EDC and NHS. The coagulation ability was evaluated preliminarily through the whole blood coagulation time, and three in vitro coagulation indexes (activated partial thromboplastin time, prothrombin time and thrombin time). The guanidine modified chitosan extracts were co-cultured with the mouse fibroblasts, and then the cell growth was observed by MTT assay and fluorescence microscope. RESULTS AND CONCLUSION:The guanidine modified chitosan shortened the whole blood coagulation time, suggesting its hemostatic property. In vitro coagulation results indicated that the guanidine modified chitosan exerted the effect not through the traditional endogenous and extrinsic coagulation pathways. Guanidino group has not been proved to be hemostatic, so the chitosan may be the effective component. MTT assay showed that the cell proliferation rate was 87.8%and the toxicity level was grade 1. Fluorescent staining observed abundant live cells, and few dead cells, indicating that the guanidine modified chitosan exhibits low cytotoxicity.
5.Research progress on mechanism of lncRNA in ophthalmology disease
Jing XIANG ; Lihua KANG ; Huaijin GUAN
Recent Advances in Ophthalmology 2017;37(6):579-582
Long non-coding RNA (lncRNA) widely exists in living organisms.It,whose length is more than 200 bp,can regulate the genic expression in the epigenetic,transcriptional and post-transcriptional level.Therefore,it can influence cell proliferation,apoptosis,vitality,immune response and oxidative stress.In recent years,the study of lncRNA is developing rapidly in the ophthalmic research,and this article reviews the latest research progress on mechanism of lncRNA in the ophthalmology disease.
6.Preparation and evaluation of DEET-ethylcellulose microsphere
Academic Journal of Second Military Medical University 2000;0(11):-
Objective:To prepare DEET-ethylcellulose microsphere(DEET-EC) and observe its properties to retard volatilization of DEET. Methods: DEET-EC was prepared with solvent evaporation method. DEET was dissolved in CH 2Cl 2 with EC served as dispersed phase and 1% PVA water solution as continuous phase. The dispersed phase was added into the continuous phase with stirring rate at 1 000 r/min. The stirring rate was changed into 600 r/min after 30 min, and was kept until CH 2Cl 2 was entirely volatilized. After being watered, precipitated and lyophilized for 12 h, DEET-EC was derived, and the shape was observed with electron microscope. The particle size distribution was detected in 500 microspheres with optical microscope. HPLC method was established to determine the embedding ratio and loaded ratio of DEET-EC microsphere. Chromatograph conditions: Diamonsil ODS column (150 mm?4.6 mm), CH 3OH∶H 2O=65∶35 as mobile phase at 1 ml/min, the detected wavelength 210 nm. Results: The DEET-EC was egg-white and had spherical shape. Almost 90% of the MS distributed in 30-70 ?m, while ( ar ) and ( v ) were 49.6 ?m and 51.2 ?m, respectively. The loading ratio was 18.7% and the embedding ratio was 56.1%(n=6). Conclusion: The solvent evaporation method is convenient and simple to prepare DEET-EC microsphere.
7. Applications and Challenges of Guidelines for Pharmacoeconomic Evaluation in China
Chinese Pharmaceutical Journal 2017;52(13):1188-1193
OBJECTIVE: Analyze the applications and challenges of guidelines for pharmacoeconomic evaluation (PE) in China. METHODS: Reviewing what Chinese health policy need from pharmacoeconomics; analyzethe applications and challenges of guidelines for PE in China; summarize the application and development of the guidelines for PE in the world. RESULTS: PE plays an important role in Drug development, pricing, reimbursement and evidenc-based clinical pathway. Since PE guidelineis not mandatory in healthcare policy decision making in China, and there are lack of high-quality, reliable database for PE, the guideline encountered many difficulties and challenges in practice and hasn't play its due role yet. CONCLUSION: Based on the experience from other counties and practical in China, we recommended that PEguideline shouldbe mandatory. It is recommended to set up national research institutions for PE, and update or supplementthe guidelines regularly. Moreover, the basic research should be strengthened, such as rational drug use, pharmacoepidemiology, quality of life.
8.A new sesquiterpene lactone from root of Baccaurea ramiflora
Jing XU ; Huashi GUAN ; Qiang LIN
Chinese Traditional and Herbal Drugs 1994;0(10):-
Objective To study the chemical constituents in the root of Baccaurea ramiflora.Methods Various chromatographic techniques were used to separate and purify the constituents.The structures of the compounds were elucidated by physicochemical properties and spectral analyses(UV,IR,ESI-MS,1H-NMR,13C-NMR,Dept90,Dept135,1H-1H COSY,1H-1H NOESY,HMQC,HMBC).Results A new compound was isolated and idertified.Conclusion This compound is a novel compound and named as epidihydrotutin.
9.Isolation and structural elucidation of flavonoids from Ancecotochilus roxburghii
Jing GUAN ; Chunlan WANG ; Shunxing GUO
Chinese Traditional and Herbal Drugs 1994;0(10):-
Objective To isolate and identify the chemical constituents in the polar part of the Ancecotochilus roxburghii.Methods The flavonoids were isolated by column chromatography and their structures were elucidated through spectral analyses such as FAB-MS and NMR.Results Five flavonoids were isolated and identified as quercetin 7-O-?-D-glucoside(Ⅰ),quercetin 3-O-?-D-rutinoside(Ⅱ),isorhamnetin-3,4′-O-?-D-diglucoside(Ⅲ),isorhamnetin-3,7-O-?-D-diglucoside(Ⅳ),and isorhamnetin-7-O-?-D-diglucoside(Ⅴ).Conclusion All the compounds are obtained from A.roxburghii for the first time.
10.Clinical monitoring of FK506's AUC
Jing LIU ; Delin GUAN ; Juzhong GAO
Chinese Journal of Urology 2001;0(10):-
Objective To evaluate the relation between blood level of tacrolimus and AUC after renal transplantation. Methods Blood assay of FK506 was conducted at 0~12 h after oral administration,the study was carried out in 60 renal transplantation or pancreas kidney transplantation patients.AUC was computed according to the blood FK506 levels.Regression analysis was used to study the relation between AUC and Cx. Results The blood FK506 levels 0~12 h after renal transplantation were different from those after pancreas kidney transplantation.In renal transplantation patients,the correlation between C 2 and AUC ( r 2=0.89) has been better than C 0 and AUC ( r 2= 0.74 ).In some renal transplantation patients with hepatopathy and in some pancreas kidney transplantation patients,the corretation between C 2 and AUC ( r 2=0.91) has been similar to that of C 0 and AUC ( r 2=0.90). Conclusions The equation AUC=7?C 2 could be applied in renal transplantation patients free of hepatopathy whereas,in renal transplantation patients with hepatopathy and in pancreas kidney transplantation patients,it is better to assess C 1~4 in the early stage of FK506 administration and suitable equation selected to compute AUC.