1.Lipoprotein lipase Activatoor NO-1886
Chinese Pharmacological Bulletin 1987;0(03):-
NO-1886 increases LPL mRNA and LPL activity in adipose tiss ue, myocardium and skeletal muscle, resulting in an elevation of postheparin pl asma LPL activity and LPL mass in rats. NO-1886 also decreasess plasma TG con centration and causes a concomitant rise in plasma HDL-C, reduces plasma gluco se, improves insulin resistance and ?-cell dysfunction. Therefore, the LPL act ivator NO-1886 or other possible LPL activating agents are potentially benefici al for the treatment of hypertriglyceridemia, hypo-HDL cholesterolemia, and pro tection from atheroscleroosis and diabetes.
2.Antitumor Activity of Wei Yi Ting Granules on S_(180) Sarcoma Mice and Its Influence on the Expression of P~(53) and PCNA
Traditional Chinese Drug Research & Clinical Pharmacology 1993;0(03):-
Objective To observe the antitumor action of Wei Yi Ting granules (WYTG) and to explore its possible mechanism.Methods The inhibitory effect of WYTG and its different WYTG ingredient combinations on the growth of S180 tumor in mice was observed.Meanwhile,the effect of WYTG and its different ingredient combinations on the expression of P53 and PCAN during tumor development was studied by immunohistochemical method.Results WYTG had an obvious inhibitory effect on tumor growth and could reduce the positive cell number of P53 and PCAN,the difference being significant as compared with the blank control group(P 0.05).Conclusion WYTG,which has the actions of strengthening Qi,activating blood and removing toxicity,exerts an obvious inhibitory effect on tumor as compared with its ingredient combination of strengthening Qi and with that of strengthening Qi and removing toxicity.Its therapeutic mechanism may be related to the inhibition of the expression of P53 and PCAN and the influence on tumor-associated gene during the growth of tumor.
3.Study on the effect of brucine on cyclooxygenase 2 in non-small cell lung cancer cells
Guomin ZHU ; Fangzhou YIN ; Xukun DENG ; Baochang CAI ; Wu YIN
China Oncology 2006;0(09):-
Background and purpose:Brucine is one of the active components from Strychnos nux vomica,with signifi cant analgesic,anti-inflammatory and platelet-aggregating inhibitory properties.Due to its cytotoxic effect,the anti-tumor effect of brucine has increasingly been appreciated.In this study,we investigated the impact of brucine on A549 cells proliferation,apoptosis as well as the underlying mechanisms.Methods:MTT assay was used to examine the cell viability,flow cytometric analysis and fluorescent microscope were applied to examine cell apoptosis,ELISA method was used to examine the effect of brucine on PGE2 release from A549 cells and RT-PCR analysis was used to measure mRNA content,western blotting analysis was used to measure protein expression and luciferase activity was detected to examine the effect of brucine on COX-2 promoter activity.Results:Brucine was able to suppress the proliferation of A549 cells and induce cell apoptosis to time-dependent and dose-dependent manner.To understand the mechanisms,COX-2 was identifi ed to be an important target molecule involved in the apoptosis induced by brucine because brucine could suppress the COX-2 mRNA,protein expressions as well as PGE2 release in A549 cells in a timedependent manner.Furthermore,overexpression of COX-2 abrogated brucine-induced cell apoptosis,in contrast,when A549 cells were transfected with COX-2 siRNA,the apoptotic effect of brucine was dramatically enhanced.Further analysis revealed that brucine was able to suppress COX-2 transcriptional activation.Conclusion:Brucine was able to induce lung cancer apoptosis via downregulation of COX-2.
4.Effect of parecoxib on hippocampal inflammation in partial hepatectomy rats and its possible mechanism
Tiejun LI ; Chunming YIN ; Shunv CAI
Chinese Journal of Biochemical Pharmaceutics 2014;37(7):61-65
Objective To investigate the effect of parecoxib on hippocampal inflammation following partial hepatectomy in rats.Methods 72 SPF male healthy SD rats were selected and randomly divided into four groups:control group(group C),anesthesia group(group A),operation group(group S),parecoxib group (group P ), each had 18 rats.Using partial hepatectomy operation trauma to establish animal model of hippocampal inflammation.Rats were sacrificed 1,3,7 days after anesthesia,the expression of inflammatory mediators in hippocampal tissue were detected.The expression of cyclooxygenase -2(COX-2)mRNA were detected by real-time quantitative PCR,and COX-2 and cysteine proteinase -3(Caspase-3)protein expression were detected by Western blot,the prostaglandin E2(PGE2)content were detected by enzyme linked immunosorbent assay(ELISA).Results Compared with control group,COX-2 expression(protein and mRNA),PGE2 production and Caspase-3 protein expression in group A had no significant difference.In group S and P,COX-2 expression,PGE2 and Caspase-3 protein expression increased significantly on 1st day postoperatively to 3rd day (P<0.05 or P<0.01),and they were obvious especially in the postoperative 1st day(P<0.01).The above inflammation index expression returned to normal in 7th days after operation.Compared with group S,COX-2 expression,PGE2 and Caspase-3 protein expression increased significantly on 1st day postoperatively to 3rd day(P <0.05 or P <0.01 ).Conclusion Partial hepatectomy could induce hippocampal inflammatory response in the rats.Parecoxib could suppress the hippocampal inflammation via the down-regulation expression of COX-2 mRNA and protein,PGE2 and Caspase-3 protein in rats.
5.His bundle pacing and atrio-ventricular nodal ablation guided by intracardiac echocardiography
Lixue YIN ; Li CAI ; Chunmei LI
Chinese Journal of Ultrasonography 2003;0(08):-
Objective To develop an in vivo procedure f or His bundle pacing (HBP) and radio-frequency (RF) ablation of the atrio-ventricular node (AVN) guided by intracardiac echocardiography (ICE) and tissue Doppler imaging (TDI). The procedure included a custom designed bipolar active fixation pacing lead and steerable delivery catheter, and a commercial RF generator and ablation catheter. Methods Six anesthetized- closed-chest canines were tested. The anatomy in the His bundle and AVN regions, and the onset of myocardial electro-mechanical activation were identified using ICE and TDI. The lead and RF ablation catheter were navigated using an ICE catheter (for local detailed imaging) and fluoroscopy (for global imaging). Surface QRS morphologies were recorded to confirm HBP and third degree block post-ablation. Results Direct His bundle pacing was achieved in one canine, and His + ventricular septal pacing in the remaining five. QRS width in sinus rhythm and HBP were ( 59.7-? 5.3-)ms and ( 82.8-? 16.6-)ms separately (P= 0.02-). The increased QRS width for HBP was due to early septal activation. HBP thresholds were ( 3.0-? 1.0-) volts at 0.5 ms (N=5 due to a late exit block). The mean procedure durations were: HBP 40 minutes (3 to 81 minutes), AVN ablation 3 minutes (2 to 5 minutes), and total X-ray exposure 13 minutes (1 to 55 minutes). Post-mortem analysis of the lead and ablation lesions confirmed correct anatomic localization for HBP and AVN ablation. Conclusions ICE provides precise anatomic guidance of HBP lead implantation and AVN ablation and can significantly reduce exposure to fluoroscopy.
6.Ptosis after procedure of duplication blepharoplasty: a clinical study
Fei YIN ; Jiaping YU ; Maoji CAI
Chinese Journal of Medical Aesthetics and Cosmetology 2001;0(06):-
ObjectiveTo summarize the clinical characteristics of pt osis,one of complications after double eyelid blepharoplasty, and to explore i ts causes and attempt for the resolutions. MethodsThe clinica l symptoms were divided into three types based on the degrees of the ptosis afte r double eyelid blepharoplasty. The causations in 25 cases of different degree o f ptosis after double eyelid blepharoplasty were investigated and analyzed durin g operations. The local adhesive deformities were analyzed so as to take differe nt resolutions for the complication. Results It seemed that th e operative damage to the aponeurosis was the main reason for the complication. So it caused the scar adhesive deformities between the palpabralis aponeurosis a nd the orbital membrane or the skin of upper eyelid, resulting in the difficult y of the palpabralis muscle's contract and unablility of the muscle function in different degrees. Conclusion The ptosis can surely be av oided if we have good knowledge about the mechanism of double fold formation and the anatomy of eyelids and perform the operation meticulously.
7.Oculo-cardiac reflex during ocular plasty
Fei YIN ; Jiaping YU ; Maoji CAI
Chinese Journal of Medical Aesthetics and Cosmetology 2001;0(03):-
Objective To observe the oculocardiac reflex during the ocular plasty and to study its possible mechanism. Methods A total of 132 cases were studied by dynamic electrocardiography to analyze the changing of heart rate before and after operations. Results Heart rate decreasing by over 10 times during operations was regarded as the positive standard of the oculocardiac reflex. Of all cases the oculocardiac reflex appeared in 41 cases and 53 times were observed including of continual two times happened in 6 cases. In all the reflex ,9 cases was observed in injection of anaesthetic, 5 cases in pulling eyelids, the orbicular muscle and the palpabralis muscle, 21 cases in resecting orbital fats,6 cases in stressing the eyeball after operations. The incidence of oculocardiac reflex was 31.1%. Conclusion Some steps in the process in ocular plasty are more possible to elicit the reflex, such as dragging peripheral eyeball muscles,stressing eyeball and pulling eyelid. The reflex will result in heart rate decreasing, heart rhythm and respiratory changing,even render heart to sudden stop . Therefore, we should operate gentlely and accurately,and also avoid overly stress on eyeball to elicit the oculocardiac reflex.
8.Teaching Reform Exploration in the Clinical Probationary Practice in Department of Obstetrics and Gynecology
Yanhong YANG ; Ying CAI ; Guowu YIN
Chinese Medical Ethics 1994;0(05):-
Based on the professional characteristics of obstetrics and gynecology department,teaching reform should take clinical manifestations of diseases as the main direction of clinical probationary teaching,stress the formation cultivation of medical students' clinical logic,add human-oriented thought into clinical teaching and stress medical ethics education,and construct a novel teaching mode in the clinical probationary practice in department of obstetrics and gynecology so as to improve clinical teaching of obstetrics and gynecology.
9.Ethical Exploration of the Right of Privacy in College Enrollment Physical Examination
Liping CAI ; Yuzhi HUO ; Yin CHENG
Chinese Medical Ethics 1995;0(02):-
The enrollment physical examination,as a real assessment of the physical and health condition for those high school graduates,is of great referencing significance for their major selection.Therefore,during the examination process,medical staff involved should enhance their recognition for relevant legal regulations,and fully respect graduates′ rights of privacy and informed consent,to ensure the impartiality,fairness,reality,and effectiveness of the assessment result,and guarantee the legal rights of high school graduates.
10.INFLUENCE OF ANTIHYPERURICEMIC FOLLOW UP THERAPY ON PRIMARY GOUT
Hungbao HUA ; Ankang YIN ; Jiuzhong CAI
Chinese Journal of Endocrinology and Metabolism 1986;0(03):-
This study was conducted to assess the effects of over ten years of antihyper-uricemic follow-up therapy on 65 patients out of 118 cases of primary gout. It was found that reduced tophaceous deposition correlated with normalization of the serum uric acid concentration. The patients with lower mean uric acid concentrations were more likely to have a reduction in tophi. There was a lack of correlation between mean serum uric acid concentrations and radiographic changes of gout. Although treatment allowed better control of the disease in general, serum uric acid concentration alone may not provide an effective means of monitoring the progression of the disease. In this series,antihyperuricemic agents were generally well tolerated. Gastrointestinal upset was seen in 13 of the 65 cases (20%),mild leukopenia in 6 patients. skin rash in 2 and herpes simplex in 1. No patient was withdrawn from the therapy owing to the untoward side effects.