1.Discussion on mechanism of eye acupuncture in treating apoplectic paralysis
International Journal of Traditional Chinese Medicine 2011;33(7):632-633
The traditional Chinese medicinal therapy of the eye acupuncture is one of superior microacupuncture therapies which was invented by famous acupuncture professor Peng Jing-shan. Through needling points around the eye, the treatment can treat the diseases of whole body, especially for curing apoplectic paralysis. This article expounded and analyzed the mechanism of eye acupuncture in treating apoplectic paralysis through medical theory, biological holographic theory, modern nerves anatomy and nerves physiology.
2.PRELIMINARY STUDY ON ANTITUMOR ACTIVITY OF A NEW ANTHRACYCLINE: R_5
Medical Journal of Chinese People's Liberation Army 2001;0(12):-
R 5 was administered in vitro to observe its antitumor activity in human breast carcinoma cell line MCF 7. As the most useful and efficient anthracycline, epirubicin(EPI) was served as the positive chemical treatment control. MTT colorimetric assay was applied to detect cytotoxicity of R 5 to MCF 7 cells. Apoptotic rate of cells double marked with Annexin V FITC and PI was examined by flow cytometry. And, the alteration of wild type (WT) p53, bax and bcl 2 proteins expression was also observed. Ultrastructural change of MCF 7 cells was observed under a transmission electron microscope. The results showed that growth restrain was observed in MCF 7 cells when administered with different doses of R 5 or EPI. The effect was increased concomitantly with the increasing of R 5 or EPI concentration and culture time. Apoptosis was observed since 6 hours after the MCF 7 cells cultured with R 5 or EPI, and the effect was increased with the culture time extending and reached the highest peak at about 48 hours. However, the apoptotic rate decreased when cultured for 72 hours. Different doses of R 5 and EPI can all induce apoptosis in MCF 7 cell, and the apoptotic rate increased with their concentration, but decreased when the concentration was higher than 5?10 -6 mol/L. Ultrastructure of apoptotic MCF 7 cells, observed by transmission electron microscope, showed typical morphologic changes of apoptosis.
3. Protective effects of hydroxyethyl starch 130/0.4 against myocardial ischemia-reperfusion injury in rats
Academic Journal of Second Military Medical University 2010;30(8):947-949
Objective: To explore the influence of hydroxyethyl starch(HES) 130/0.4 on myocardial ischemia-reperfusion (I/R) injury in rats and the possible mechanism. Methods: Twenty-four SD rats were evenly randomized into four groups(n = 6): the sham operation group, the I/R(IR) group, albumin + I/R(A-IR) group, and HES+I/R(H-IR) group; rats in the latter three groups were made into I/R models and were treated respectively with 7.5 ml/kg saline, 5% albumin and HES 130/0.4 through femoral vein at 25 min of ischemia. At 180 min of reperfusion, animals were sacrificed and the pathological changes of myocardium were observed. Serum concentrations of TNF-α and IL-1β and the myocardial NF-κB activity were also measured. Results: Histological examination showed that the injury in H-IR group was ameliorated compared with those in IR and A-IR groups. NF-κB activity and TNF-α, IL-1β concentrations in the sham operation group were significantly lower than those of the other 3 groups (P<0.05); and the increases of the above parameters in H-IR group were smaller than those of the IR and A-IR groups (P<0.05). Conclusion: HES 130/0.4 can improve myocardial function and attenuate ischemia-reperfusion injury, and the mechanism might be related to the inhibition of myocardial NF-κB activity and reduction of proinflammatory factors.
4. Analysis of anti-infection drug usage in 11 hospitals of Shanghai during 2003-2005
Academic Journal of Second Military Medical University 2010;28(8):884-887
Objective: To evaluate the current situation and trend of anti-infection drug usage in 11 hospitals of Shanghai during 2003-2005. Methods: Using the cost ranking approach, we analyzed the anti-infection drug usage in 11 major hospitals of Shanghai during 2003-2005. The drug species, consumption, cost, manufacturer, etc. were analyzed by Excel 2000 software. Results: It was found that the cost of anti-infection drugs in the 11 hospitals occupied 22. 65% of the total drug expenditure during 2003-2005 and the expenditure decreased at an annual rate of 4.02%. We also found that 80% of the anti-infection drugs were antibiotics. The consumption of β-lactamase inhibitor valued 44.120 5, 73.696 7 and 95.163 0 million Yuan in 2003, 2004 and 2005, respectively (with a yearly growth of 46.86%), ranking the 3rd in 2003 and the 2nd in both 2004 and 2005. The consumption of cephalosporins ranked the first during 2003-2005, The top 20 anti-infection drugs occupied nearly 80% of the total consumption; the consumption of sulbactam sodium/cefoperazone raised from the 17th in 2003 to the 5th in 2004 and to the first in 2005. Conclusion: The consumption of anti-infection drugs has been restrained; cephalosporins are still the major drugs in clinical practice; and the consumption of sulbactam sodium/cefoperazone is on the rise year by year.
5. Preparation and in vitro release of recombinant peptide-PLGA sustained release microspheres
Chinese Pharmaceutical Journal 2012;47(24):2012-2016
OBJECTIVE: To prepare recombinant peptide(rAHP, amino acid sequence is VLPVPR) PLGA sustained release microspheres by double emulsion solvent evaporation method. METHODS: The rAHP-PLGA microspheres preparation process was optimized by orthogonal experiments using PLGA copolymers with different LA/GA ratios or different molecular weights as sustained material, and in vitro drug release profiles of the microspheres were also investigated. RESULTS: The microspheres were smaller (P < 0.05) and more porous with lower molecular weight of PLGA. The optimal preparation process of rAHP-PLGA microspheres was as follows; PLGA concentration was 12 g · 100 mL-1, the stirring rate of the first emulsion was 1000 r · min-1, the volume ratio of inner water phase to oil phase was 1-7.5, and the PVA concentration was 4 g · 100 mL-1. The encapsulation efficiency of the rAHP-PLGA microspheres prepared by the optimum process was more than 90%, the drug loading was above 11% and the average particle diameter-was in the range of 70-90 μn. The cumulative in vitro release percentage in PBS buffer was less than 40% within 2 h, the release speed increased(P < 0.05) with lower molecular weight or lower ratio of LA/GA. The drug release curve was fit to Higuchi equation, suggesting that rAHP released from the microspheres based on diffusion mechanism. CONCLUSION: The rAHP-PLGA microspheres can be prepared easily with good morphology, high entrapment efficiency and certain sustained release capacity.
6. Antihypertensive effects of biodegradable microspheres loaded with recombinant antihypertensive peptide in spontaneously hypertensive rats
Chinese Pharmaceutical Journal 2012;47(16):1288-1291
OBJECTIVE: To investigate the effect of PLGA microspheres loaded with recombinant antihypertensive peptide (rAHP) on blood pressure of spontaneously hypertensive rats (SHR). METHODS: SHR were randomized to ten groups (n=8 in each group) and administered saline, rAHP (800 μg · kg-1) or rAHP-PLGA microspheres (200, 400 and 800 μg · kg-1) by gavage and subcutaneous injection respectively. WKY rats were randomized to four groups (n=8 in each group) and given rAHP-PLGA microspheres (800 μg · kg-1) or saline by gavage and subcutaneous injection respectively. The systolic blood pressure was measured before and after the administration. RESULTS: Compared with the control group, medium-dose and high-dose of rAHP-PLGA microspheres reduced blood pressure after being orally administered and the effect lasted for above 30 h. For the subcutaneous injection groups, medium-dose and high-dose of rAHP-PLGA microspheres reduced blood pressure and the effect lasted for above 8 d. rAHP-PLGA microspheres had no effect on blood pressure in WKY rats. CONCLUSION: rAHP-PLGA microspheres have long-lasting and significant anti-hypertensive effect in SHR. Copyright 2012 by the Chinese Pharmaceutical Association.
7.Femtosecond laser versus mechanical keratome in thin-flap laser in situ keratomileusis (LASIK) for correction of high myopia
Hai-Yan LI ; Tong SUN ; Yong TAN ;
Ophthalmology in China 1993;0(03):-
Objective To compare the safety,effectiveness and predictability of laser in situ keratomileusis (LASIK) with fem- tosecond laser (IntraLase) and mechanical microkeratome (Moria M2,head 90?m).Design Prospective clinical study.Participant 148 patients (274 eyes) with high myopia received operation of LASIK.Method The patients were assigned to receiving LASIK with corneal flap creation by Intralase femtosecond laser (134 eyes of 76 patients) or Moria 90 keratome (140 eyes of 72 patients),both groups receiving eximer laser ablation with VISX Star S4.Followed-up examinations such as visual acuity,refraction,wavefront aberra- tion,etc.were scheduled for 1 day,1 week,1 month and 3 months postoperatively.Main Outcome Measures Visual acuity,refrac- tion,wavefront aberration,Schirmer test and tear film breakup time(BUT).Results At 3 months after operation,108 eyes (80.6%) of IntraLase group had UCVA better than or equal to BSCVA preoperatively,showing no statistically significant difference to microker- atome group (116 eyes,82.9%,P=0.642).The mean residual spheroequivalent of refraction of IntraLase group was -0.49?0.70D,show- ing no statistically significant difference to microkeratome group (-0.56?0.83D,P=0.448).The mean Schirmer test of Intralase group was 9.5?4.0mm,showing no statistically significant difference to microkeratome group (9.5?7.2mm,P=0.950).The mean BUT of IntraLase group was 7.9?4.3s,showing no statistically significant difference to microkeratome group (8.08?5.48s,P=0.869).The postoperative higher-order aberrations of the IntraLase group was 0.480?0.133?m,lower than that of microkeratome group (0.578?0.169?m,P=0.034). Conclusions Thin-flap LASIK with femtosecond laser and mechanical keratome flap creation are both safe,effective for the correction of high myopia,showing good predictability and stability.Femtosecond laser has slightly better clinical outcomes than microkeratome.
8.Analysis of diagnosis and treatment of 50 patients with traumatic and hemorrhagic shock
Chinese Journal of Primary Medicine and Pharmacy 2006;0(07):-
Objective To improve the level of diagnosis and treatment of the traumatic and hemorrhagic shock.Methods 50 cases of patients with sever traumatic and hemorrhagic shock treated in our department between May 2004 and May 2007 were analyzed retrospectively,and their age,shock severity scale,time to hospital after in- jury,operation,fluid resuscitation volume etc were analyzed to show the relationship between the factors and the out- come.Results The rescue success rate was 76%(38 cases),and traumatic mortality was 24%(12 eases).Conclu- sion Shock severity scale and incorreet resuscitation manipulation are the main factors affecting the result of resusci- tation and treatment of traumatic shock,and early surgery can effectively improve the result of severe trauma thera- py.
9.Influencing factors for eye cyclotorsion and pupil centroid shift during LASIK
Hai-Yan LI ; Tong SUN ; Yong TAN ;
Ophthalmology in China 2006;0(05):-
Objective To investigate the influencing factors for eye cyclotorsion and pupil centroid shift during LASIK.Design Non-controlled retrospective case series.Participant 131 patients (262 eyes) with myopia received bilateral LASIK.Methods Eye cy- clotorsion and pupil centroid shift were measured with Custom Vue~(TM) software during operation and compared with age,gender,right or left eye,flap-making method,spherical equivalent (SE),pupil diameter before and during operation.Main Outcome Measures The de- gree of eye cyclotorsion and distance of pupil centroid shift during LASIK.Results The mean eye cyclotorsion during LASIK was 3.07??2.07?(0?-8.6?).The mean pupil centroid shift was 0.33?0.14 mm (0.04-0.51 mm).The eye cyclotorsion was relevant to preoperative pupil size,difference of pupil size before and during operation,and preoperative SE (r=0.188,0.156,0.130,all P7.0 mm was higher than that of with pupil diameter≤7.0mm (3.35??2.17?,2.71??1.89?,P=-0.014).Pupil centroid shift was higher in fight eyes than that in left eyes (0.39?0.12 mm,0.28?0.13 mm,P=0.000).Conclu- sion Eye cyclotorsion and pupil centroid shift during LASIK can be measured with Custom Vue~(TM) system.The eye cyclotorsion may be influenced by the preoperative pupil size.The pupil centroid during LASIK was more significant in the right eyes than in the left eyes.
10.Effects of isoflurane inhalation during reperfusion on different degrees of global cerebral ischemiareperfusion injury in rats
Yong-Hai SUN ; Yun YUE ; Yun WANG ;
Chinese Journal of Anesthesiology 1995;0(12):-
Objective Isoflurane preconditioning has been shown to protect against cerebral ischemia-reperfusion(I/R)injury.The purpose of this study was to investigate if isoflurane inhalation during reperfusion hasany protective effects.Methods Fourty-two SD rats weighing 318-365 g were randomly divided into 3 groups:sham group(n=6),control group(n=18)and isoflurane group(n=18).Control group and isoflurane groupwere further divided into 10,15 and 20 rain ischernia subgroups(subgroup A,B,C,n=6).In isoflurane group1.4% isoflurane in air was inhaled immediately after reperfusion was started for 30 min.Two days before theexperiment the animals were anesthetized with intraperitoneal chloral hydrate 300 mg?kg~(-1).Microdialysis catheterwas inserter into right hippocampns using stereotactic technique and fixed.BIS microelectrodes were placed in thebrain.Vertebral arteries were permanendy occluded by electric coagulation.Bilateral common carotid arteries wereexposed and atranmatic sutures were placed around them.Globol cerebral ischemia was produced by tighteningcarotid sutures and maintained for 10,15 or 20 min(subgroup A,B,C).Cerebral iscbemia was confirmed by lossof righting reflex,dilated pupils,loss of light reflex,BIS=0 and isoelectric potential on EEG.Carotid sutureswere then released for reperfusion.Isoflurane inhalation was started right after the beginning of reperfusion andmaintained for 30 min.Neurologlc outcome was assessed by motor performance according to Combs(0-10,0=severe dysfunction,10=no dysfunction)at 24 h,48 h and 72 h of reperfusion.Microdialysis samples werecollected before during and 0-15,15-30,30-45 and 45-60 min after ischemia for determination of glutamateconcentration.Three days after ischemia the animals were sacrificed and brains were removed for microscopicexamination of hippocampns CA1 region.The number of apoptotic(TUNEL positive)neurons were counted and thepercentage(the number of TUNEL positive neurons/the total number of neurons)was calculated.Results Theglutamate content in hippocampus was significantly lower in isoflurane group than in control group duringreperfusion(P