3.Significance of Ligustrazine on acute cerebral infarction rat model and its changes on hydrogen sulfide, plasma bilirubin and oxidized low density lipoprotein level
Guozhen ZHANG ; Weihong ZHENG ; Rong LIANG
Chinese Journal of Biochemical Pharmaceutics 2015;(3):28-31
Objective To explore significance of Ligustrazine on acute cerebral infarction rat model and its effects on hydrogen sulfide, plasma bilirubin and oxidized low density lipoprotein level.Methods 100 healthy SD rats, ( 250 ±30 ) g, male or female, were divided into five groups ( control group, sham operation group, model group, western medicine group, and Ligustrazine group) ,each had 20.Experimental groups prepared focal cerebral ischemia model with suture method.Normal group, model group and the sham group once daily intravenous injected sterile saline 10 mL, Ligustrazine intravenous injection group injected Ligustrazine 10 mL/(kg? d), the WM group intravenous injected atorvastatin 10 mL/(kg? d).Half of the rats were sacrificed at 10 days of the experiment to detect the relevant indicators, at 20 days, the remaining rats in each group were sacrificed.Blood hydrogen sulfide, plasma bilirubin and oxidized LDL levels were detected, and brain pathology change were observed.Results Compared with control group and sham group, in Ligustrazine group and western medicine group,hydrogen sulfide and plasma bilirubin levels increased significantly, and the difference was statistically significant (P<0.05);after 20 days of treatment, compared with western medicine group Ligustrazine group hydrogen sulfide and plasma bilirubin levels rose more significant (P<0.05).Compared with control group and sham group, in Ligustrazine group and western medicine group, OxLDL levels decreased significantly, the difference was statistically significant (P<0.05); after 20 days of treatment, compared with western medicine group, OxLDL levels in Ligustrazine group decreased more significant ( P<0.05 ) .The rats brain histopathology examination showed that, Ligustrazine group:few nerve cell death, cytoplasm loose and swelling reduced significantly;WM group:condensation nuclei rare, brain edema relieve;model rats: brain tissue surrounding the nerve yuan swelling and the emergence of shrinkage, nuclear condensation within the infarct cells and vascular necrosis of normal tissue disappeared, fuzzy structure, interstitial edema; the control group and the sham-operated rats: normal cell morphology, distribution, no cortical Ministry pale infarction.Conclusion Ligustrazine can increase acute hydrogen sulfide, plasma bilirubin levels in rats with cerebral infarction, elevate level of oxidized low-density lipoprotein, has clinical significance.
4.Effect of combined cataract and glaucoma surgery on function of eye surface and tear film
Jie, CHEN ; Zheng-Rong, ZHANG ; Wei, CHEN
International Eye Science 2016;16(8):1584-1587
Abstract?AIM:To evaluate the effect of combined glaucoma and cataract surgery on the function of eye surface and tear film.?METHODS:This clinical trial involved 75 patients ( 75 eyes ) with glaucoma complicated with cataract undergoing combined glaucoma and cataract surgery.All the eyes were divided into surgical group ( the eyes undergoing operation ) and control group ( the other eyes).The symptoms and signs of dry eye disease, Schirmer's I test, break -up time ( BUT ) , corneal fluorescein staining were tested and marked 1mo after operation.Comparison of the results was made between two groups.?RESULTS:The average intraocular pressure was 16.25± 0.46mmHg at 1mo after operation, compared with 45.29± 4.39mmHg at 3d before surgery, the difference was statistically significant ( P<0.05 ).Preoperative average visual acuity was 0.08±0.06, corrected visual acuity was<0.05 in 23 eyes,≥0.05 to<0.1 in 16 eyes,≥0.1 to<0.3 in 36 eyes.Postoperatively 1mo, corrected visual acuity:<0. 05 for 7 eyes (9%),≥0.05 to <0.1 for 11 eyes (15%), ≥0.1 to<0.3 for 38 eyes (51%), ≥0.3 to <0.5 for 11 eyes (15%) , ≥0.5 for 8 eyes (11%), postoperative visual acuity was 0.15 ±0.1, which was significantly higher than before surgeries ( P<0.05).The postoperative dry eye symptoms of surgical group was higher, compared with that of control group, and the differences of diagnosis of dry eye test indicators between the two groups were statistically significant(P<0.05).? CONCLUSION: Combined cataract and glaucoma surgery may affect postoperative ocular surface and tear film function, make the tear film stability damaged and lead to dry eye disease.
5.GROWTH IMPROVEMENT OF LACTOBACILLUS ACIDOPHILUS BY JUICE OF PLEROTUS SAPIDUS
Gong ZHANG ; Rui-Jun WANG ; Rong ZHENG ;
Microbiology 1992;0(04):-
The present study shows that mushroom juice exhibits a significanteffect on growth of L. acidophilus in reconstituted skim milk. When 5% - 10% mushroom juice was added in skim milk, they shorten generation time and the rate of lactic acid production was accelerated. After 10h incubation at 37℃ cell counts of L. acidophilus in test groups were much more than in control group, were up to 108/mL.
6.Validation of Determination Method of the Content of Morphine in Compound Glycyrrhiza Oral Solution
Qingfen WANG ; Shaozhong ZHENG ; Mingqiong ZHANG ; Rong ZHANG
China Pharmacy 2007;0(36):-
OBJECTIVE:To validate the determination method of the content of Morphine in Compound Glycyrrhiza oral solution. METHODS: Samples were detected by solid phase extraction-HPLC on Kromasil C8 column (250 mm?4.6 mm,5 ?m) with mobile phase consisted of 0.05 mol?L-1 KH2PO4-0.0 025 mol?L-1 C14H15NaO3S?2H2O-acetonitrile using gradient elution.The detection wavelength was 220 nm and the flow rate was 1.0ml.min-1.RESULTS:The linear range of morphine was 2.02~20.2 ?g?mL-1(r=0.999 7),and the average recovery was 99.0%(RSD=0.40%,n=9).CONCLUSION: The method is accurate,sensitive and stable,and accurate and reliable in determination results.
8.Changes of T-lymphocyte function subsets and IL-4 and IFN-γ after irradiation injury
Hui ZHENG ; Rong ZHEN ; Xumin TU ; Zhixing ZHANG
Chinese Journal of Radiological Medicine and Protection 2009;29(4):386-388
Objective To observe the effects of T-lymphocyte function subsets,IL-4 and IFN-γ cell factor in different dose and stage after irradiation.Methoda The C57BL/6j mice were divided into shammed irradiation group and model groups.The radiation hurt model was induced by 60Co gamma rays(0.7,1.4,2.8 and 5.6 Gy).The changes of T-lymphocyte subsets CD3,CD4,CD8,IL-4 and IFN-γ in spleen cells were analyzed by flow cytometry in acute injury stage and recovery stage after irradiation.Results The lymphocyte subsets CD3 +,CD4+ and CD8 + decreased after irradiation,which were related to the irradiation dose.At 1 day after irradiation,the decreasing level of IFN-γ was higher than that of IL-4.When irradiation dose was over 2.8 Gy,IL-4 / IFN-γ showed a markedly increased compared with control group.At 25 days after irradiation,CD3 +,CD4+,CD8 +,CD4 +/CD8 +,IL-4 and IFN-γ recovered obviously,but they did not recover to the normal level of shammed irradiation group.Conclusions The depression of mouse immune function induced by γ-irradiation might be caused by changes of CD3,CD4,CD8 and CD4/CD8 ratio,especially the imbalance of IL4 and IFN-γ.
9.Determination of metabolite of nicergoline in human plasma by high-performance liquid chromatography and its application in pharmacokinetic studies
Rong ZHENG ; Yihong WU ; Dexi JIANG ; Dan ZHANG
Journal of Pharmaceutical Analysis 2012;02(1):62-66
A fast,simple and sensitive high performance liquid chromatographic (HPLC) method has been developed for determination of 10α-methoxy-6-methyl ergoline-8β-methanol (MDL,a main metabolite of nicergoline) in human plasma.One-step liquid-liquid extraction (LLE) with diethyl ether was employed as the sample preparation method.Tizanidine hydrochloride was selected as the internal standard (IS).Analysis was carried out on a Diamonsil ODS column (150 mm × 4.6 mm,5 μm) using acetonitrile-ammonium acetate (0.1 mol/L) (15/85,v/v) as mobile phase at detection wavelength of 224 nm.The calibration curves were linear over the range of 2.288-73.2 ng/mL with a lower limit of quantitation (LLOQ) of 2.288 ng/mL.The intra- and inter-day precision values were below 13% and the recoveries were from 74.47% to 83.20% at three qtality control levels.The method herein described was successfully applied in a randomized crossover bioequivalence study of two different nicergoline preparations after administration of 30 mg in 20 healthy volunteers.
10.Effect of angiotensin Ⅱ and aldosterone in patients with congenital heart disease by preoperative nursing interventions at high altitude area
Yuan CHENG ; Lifeng ZHANG ; Rong ZHENG ; Hongying CAO
Chinese Journal of Practical Nursing 2010;26(29):76-78
Objective To study the effect of angiotensin Ⅱ and aldosterone (ALD) in patients with congenital heart disease by preoperative nursing interventions at high altitude area. Methods 86 patients with congenital heart disease were divided into the experimental group and the control group on average by random. The experimental group was treated with preoperative nursing interventions and routine nursing before operation and the control group was treated with routine nursing only. Angiotensin Ⅱ and aldosterone were detected before anesthesia, 30min after operation and after pulling out of endotracheal tube respectively. Results The concentration of Angiotensin Ⅱ and aldosterone was significantly lower in the experimental group than the control group. Conclusions The risk of open surgical operation for congenital heart disease at high altitude can be reduced by preoperative nursing interventions.