2.Study on drying technology of Tiaogan Granules
Di WANG ; Fuxia JIA ; Huai GUAN ; Jiang LI
Chinese Traditional Patent Medicine 1992;0(08):-
Objective: To seek the optimum technology of drying and to solve the problem of powder sticking clump. Methods : On the basis of major drying condition, such as duration of drying, temperature of drying, evaluating different drying technology; On the basis of the quantity of the powder sticking on the wall and the hygroscopicity of one, investigating different excipients how to affect the spray drying. Seeking the optimum kinds and quantity of excipients. Results : The best properties of the granules are from the spray drying process. ?-cyclodextrin and lactose have the effects on solving the powder sticking on the wall. Conclusion : The spray drying process is the optimum one. Adding 3~5 percent of ?-cyclodextrin has an effect on improving the phenomenon of powder sticking on the wall in process of the spray drying.
3.Preliminary study on the regulation of KSHV latent infection by HIV-1 Vpr medicated by the recombinant lentivirus
Xuemei JIA ; Ping WANG ; Di QIN ; Chun LU
Chinese Journal of Microbiology and Immunology 2010;30(12):1097-1104
Objective To package the recombinant lentivirus containing HIV-1 Vpr gene and detect the effect of Vpr protein expression on the latent infection and lyric replication of KSHV.Methods The fragment of Vpr gene from expression plasmid pCI-neo-Vpr was cloned into the lentivirus vector pHAGE-CMV-MCS-IzsGreen,then the recombinant plasmid pHAGE-Vpr,package vector psPAX2 and envelope vector pMD2.G were cotransfected into 293T cells.GFP expression was observed by fluorescent microscopy.Culture media of 293T cells were harvested and filtered through 0.45 μm filter.After 293T cells were infected by a series of diluted lentivirus,the virus titer was checked by observing GFP expression.Vpr mRNA transcripts in 293T cells were detected by RT-PCR.Then BCBL-1 cells were infected by the recombinant lentivirus with 1 MOI,GFP expression was observed by fluorescent microscopy,and the mRNA transcripts and protein expression of Vpr in BCBL-1 cells were detected by RT-PCR and Western blot.Meanwhile,the mRNA transcripts and protein expression of KSHV lytic cycle gene Rta were detected by RT-PCR and Western blot,respectively.Results The recombinant lentivirus carrying HIV-1 Vpr was packaged successfully with the virus titer of 4 × 107 TU/ml.After infected with lentivirus,BCBL-1 cells could express GFP,and the exact band of Vpr was detectable by RT-PCR and Western blot.Moreover,the expression of KSHV Rta mRNA and protein were downregulated by Vpr protein.Conclusion Overexpression of HIV-1 Vpr mediated by the recombinant lentivirus could inhibit KSHV lytic replication and enhance KSHV latent infection.
4.Influence of subculture cycle on tube plantlet growth of Dendrobium huoshanense and medium composition
Shuhua JIA ; Di WANG ; Yuan GAO ; Yongping CAI ; Yi LIN
Chinese Traditional and Herbal Drugs 1994;0(08):-
Objective To optimize the best subculture cycle through studying the influence of subculture time on tube plantlet growth of Dendrobium huoshanense and the change of medium composition.Methods Height,tiller,fresh weight,and chlorophyll content of the tube plantlet and pH value,water content,and sugar content of the medium were measured after different cycles of the subculture,the cost of culture medium for subculture was calculated as well.Results The height of the tube plantlet increase 282.86%,the tiller increase by 3.5 times,fresh weight reaches its maximum,chlorophyll content of the tube plantlet almost reaches its maximum after 40 d subculture;while water content and sugar content of the medium are decreased to the lowest point,pH value of medium(
5.The relationship between progressive liver fibrosis and diabetic neuropathy
Chunxiao XIE ; Guoyu JIA ; Lu WANG ; Qiang LI ; Shaocheng WANG ; Ling YANG ; Fusheng DI
Tianjin Medical Journal 2016;44(3):345-348
Objective To study the relationship between advanced liver fibrosis and peripheral neuropathy in patients with type 2 diabetes mellitus (DPN). Methods A total of 173 patients (89 men and 84 women) with type 2 diabetes who hos?pitalized in Tianjin Third Central Hospital within nearly three years (2013.02-2015.02) were divided into three groups ac?cording to non-alcoholic fatty liver disease (NAFLD) fibrosis score:group A (NFS≤-1.455), group B (-1.455
6.Effect of Prophylactic Pancreatic Duct Stenting on Post-ERCP Pancreatitis in Patients With Risk Factors
Guofa JIA ; Hong SHAN ; Liying WU ; Di ZHANG ; Jinzhi WANG ; Xiaotian WANG ; Liangsong ZHU
Chinese Journal of Gastroenterology 2017;22(9):548-552
Background:Pancreatitis is the main complication of ERCP,and a variety of risk factors will increase its risk. Studies showed that temporary pancreatic duct stent can reduce the incidence of post-ERCP pancreatitis (PEP). Aims:To study the efficacy and safety of prophylactic pancreatic duct stenting on preventing PEP in patients with risk factors. Methods:Patients undergone ERCP and accompanied with one or more PEP-associated risk factors from November 2013 to November 2016 at Huaibei People's Hospital were enrolled,and were divided randomly into pancreatic duct stenting group (observation group)and non-stenting group (control group). Serum levels of amylase at 4,24 and 48 hours after the procedure and incidence of PEP were compared between the two groups. Results:A total of 297 patients were enrolled, and 147 patients were in observation group,and 150 patients in control group. No significant differences in gender,age and ERCP disease spectrum were found between the two groups (P > 0. 05). Incidence of PEP was significantly decreased in observation group than in control group (6. 1% vs. 16. 0%,P < 0. 05). Serum levels of amylase at 4,24 and 48 hours after the procedure were significantly decreased in observation group than in corresponding control group (P < 0. 05), however,no significant difference in incidence of hyperamylasemia was found between the two groups (59. 2% vs. 54. 7%, P > 0. 05). Conclusions:Prophylactic pancreatic duct stenting may decrease the incidence of PEP in patients accompanied with PEP-associated risk factors, especially could decrease the severity of PEP. However, the incidence of hyperamylasemia is not decreased.
7.Experimental study on the influence of 70 % and 90 % portal vein ligation on liver regeneration in rats
Xiangqian GU ; Lili JIA ; Fei WANG ; Di ZHANG ; Geng JI ; Luozhu LI
Chinese Journal of Hepatobiliary Surgery 2017;23(2):126-129
Objective To observe the efficacy of different degrees of portal vein ligation on portal pressure and liver regeneration of the unligated lobe in rats.Methods Seventy-two healthy male SpragueDawley rats were randomly divided into three groups:group A (sham,n =24);group B (n =24) undergoing 70% portal vein ligation;group C (n =24) undergoing 90% portal vein ligation.And then the portal pressure and liver regeneration rate (HRR) of the unligated lobe were detected immcdiately and postoperatively at each observation time point in each group.The serum alanine aminotransferase (ALT),aspartate aminotransferase (AST),hepatic proliferating cell nuclear antigen (PCNA) were compared at each observation time point,and the histological changes were observed by HE staining.Results The HRR of the unligated lobe in group B and group C increased obviously postoperatively at each time point,and the HRR in group C was significantly higher than that in group B [(220.1 ± 4.3) %,(246.3 ± 5.6) %,(261.4 ±2.3)% vs (128.2 ±3.7)%,(143.4 ±8.7)%,(150.7 ±7.0)%,P<0.05].The serum ALT and AST increased obviously on day 1 and then gradually declined,and the serum ALT and AST in group C was significantly higher than those in group B on day 1 [(821.7 ± 158.3) U/L,(1 372.0 ± 376.2) U/L vs (398.6 ± 80.4) U/L,(860.4 ± 80.0) U/L,P < 0.05].The immediate portal pressure in both groups were obviously increased postoperatively and then gradually declined,and the portal pressure in group C was higher than that in group B at each observation time point [(23.5 ± 1.1)cmH2O,(18.8 ±0.9)cmH2O,(17.8±1.0)cmH2O,(16.6 ±1.0)cmH2O,(15.9±1.3)cmH2O vs (17.4 ±1.0)cmH2O,(16.5 ±1.2)cmH2O,(15.3±1.0)cmH2O,(10.2±1.2)cmH2O,(10.0±1.1)cmH2O,P<0.05].ThePCNA index in group C was higher than that in group B on day 1 and3 [(21.5 ±1.1)%,(28.2±1.3)% vs (12.8 ± 2.1) %,(18.8 ± 1.9) %,P < 0.05].More foca1 necrosis of the unligated lobe were observed in group C on day 1,which were more than those in group B.Conclusion Higher degree of portal vein ligation could cause higher portal pressure,which leads to the greater regeneration of the unligated lobe.
8.Design, synthesis and anti-platelet aggregation activities of ligustrazine-tetrahydroisoquinoline derivatives.
Di XIE ; En-li ZHANG ; Jia-ming LI ; Jie WANG ; Guang-wei HE
Acta Pharmaceutica Sinica 2015;50(3):326-331
Abstract: Fifteen novel ligustrazine-tetrahydroisoquinoline derivatives were designed and synthesized according to the association principle of pharmaceutical chemistry. The structures were identified by IR, NMR and ESI-MS. The inhibitory activities of platelet aggregation induced by ADP and AA have been measured by Bron method. Preliminary pharmacological results showed that compounds 7g, 7h and 7n had potent inhibitory activity against platelet aggregation induced by AA, and the compound 7o showed significant inhibitory activity against platelet aggregation induced by ADP.
Drug Design
;
Platelet Aggregation
;
drug effects
;
Platelet Aggregation Inhibitors
;
chemical synthesis
;
chemistry
;
Pyrazines
;
chemical synthesis
;
chemistry
;
Tetrahydroisoquinolines
;
chemical synthesis
;
chemistry
9.Role of adrenal venous sampling in differential diagnosis of subtypes in primary aldosteronism
Guoyu JIA ; Fusheng DI ; Lu WANG ; Qiang LI ; Li YANG ; Nali LI
International Journal of Biomedical Engineering 2015;38(6):353-356
Objective To evaluate the role of adrenal venons sampling (AVS) in differential diagnosis of subtypes in primary aldosteronism.Methods Twenty-two patients diagnosed as primary aldosteronism in the Third Central Hospital of Tianjin from November 201 1 to July 2014, were undergone AVS for measurement of plasma aldosterone and cortisol levels in each adrenal vein and infrarenal inferior vena cava.The data were compared with the results of the thin slice incremental scanning in adrenal and postoperative pathologic diagnosis.Other 8 patients, whose screening test and confirmed diagnosis did not support the primary aldosteronism, with nodule larger than 4 cm pathologically confirmed as non-functioning adrenal adenoma, were also recruited.Results Among all the 22 patients with primary aldosteronism, the incidence rate of hypertention was 95.4%, and the incidence of hypokalemia was 81.8%.Compared with idiopathic hyperaldosteronism patients, the patients with aldosterone producing adenoma had higher blood pressure and aldosterone level in plasma, but lower plasma potassium, while the clinical and biochemical index of the non-functioning adrenal adenoma group were within the normal range.The overall accuracy rate of adrenal CT in the diagnosis of subtypes of primary aldosteronism was 77.27% (17/22), and the accuracy rates were 78.95% (15/19) in aldosterone producing adenoma and 66.7% (2/3) in idiopathic hyperaldosteronism, respectively.The accuracy rate of AVS was 100% with the ratio of aldosterone to cortisol as the criterion.Conclusions Misdiagnose may occur when using CT scan only to differentially diagnose primary aldosteronism.Compared with CT imaging of the adrenal glands, AVS has higher coincidence rate and is an elective approach to establish the subtype diagnosis of questionable primary aldosteronism.
10.Status Analysis on the Biobanks Ethical Management of Public Hospitals in Shanghai
Meiyu CAI ; Pei CHEN ; Jianping WANG ; Yifeng JIANG ; Qi LU ; Jingying JIA ; Di XUE
Chinese Medical Ethics 2016;29(2):315-317
Objective:To analyze the status of ethical management of biobanks in Shanghai public hospitals. Methods :A questionnaire survey on ethical management of biobanks was conducted in 9 representative ethics com-mittees, which were established in public hospitals with biobanks in Shanghai. Results: The ethics committees in Shanghai public hospitals had paid relatively high attention to ethical review of protocols were related to biobanks. Nonetheless, the ethical supervision and training on biobanks in Shanghai public hospitals should be enhanced. Con-clusion:The unified ethical guideline on biobanks should be developed in Shanghai for strengthening the standard-ized ethical management and ethics training to promote the development and use of biological samples library re-sources.