2.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.
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.
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.
7.TGF-?_1 induced the tolerant dendritic cells and the mechanism
Zheng-Rong LIU ; Wei-Ming LI ; Min ZHANG ; Al ET ;
Chinese Journal of Organ Transplantation 2003;0(05):-
Objective To investigate the induction of tolerant dendritic cells(DOs)and its mechanism in mice.Methods The dendritic cell line derived from C57BL/6 mouse.DO2.4 cells were co-cultured with TGF-?_1(20 ng/ml)to induce the tolerant DCs(TGF?-DC)and stimulated wihh li- popolysaccharide(LPS)for 48 h to induce the mature DCs(LPS-DC).Special small interference RNA molecule(siRNA)of PIR-B was chemically synthesized and was transfected into TGF?-DC by lip2000 (si-DC).The expression of paired immunoglobin receptor A/B(PIR-A/B)in DC2.4 cells was mea- sured by semi-quantitative RT-PCR and flow cytometry(FCM).The allogeneic stimulating capacity of DCs was measured by mixed lymphocyte reaction(MLR)using ~3H-thymidine incorporation test with the Balb/c spleen cells as reaction cells.The concentration of IFN-?in supernatants of MLR from dis- tinct groups was tested by enzyme linked immunosorbent assay(ELISA).Results TGF-?_1 up-regula- ted the PIR-B mRNA expression and down-regulated the PIR-A mRNA expression(P
8.Refractive change after mydriasis optometry combined with amblyopia treatment in children with mixed astigmatism and amblyopia
Yan, TIAN ; Ai-Ling, ZHENG ; Hai-Rong, ZHANG
International Eye Science 2017;17(6):1194-1196
AIM: To investigate the effect of mydriasis optometry combined with amblyopia treatment on refraction and amblyopia changes in children with mixed astigmatism and amblyopia.METHODS: Totally 163 children (289 eyes) of mixed astigmatism and amblyopia from January 2010 to May 2011 were treated.All of the patients received mydriatic optometry and spectaculars with amblyopia therapy and were followed up for 5a to observe amblyopia efficacy and refractive status changes.RESULTS: With 5a, main diameter diopter at distant vision decreased year by year, average decline in the first year was 0.55DS, 0.56DS in the second year, 0.72DS in the third year, 0.95DS in the fourth year, 1.89DS in the fifth year.The spherical equivalent changed from 1.12DS at distant to 0.78DS at near.The corrected visual acuity of all the patients at first visit was 0.2-0.8 with varying degrees amblyopia.After a 5-year treatment, it was effective in 268 eyes (92.7%), in which 165 eyes (57.1%) improved, 103 eyes (35.6%) cured, the results was better as the period of spectaculars wearing was longer.There was 36 eyes (37.5%) improved and 60 eyes (62.5%) cured in 1.50-2.50DC group;118 eyes (74.2%) improved, 41 eyes (25.8%) cured in 2.50-3.50DC group;11 eyes (32.3%) improved, 2 eyes (5.9%) cured, 21 eyes (61.8%) useless in >3.50DC Group.The differences of efficacy among the groups were significant (all P<0.05).CONCLUSION: Appropriate spectaculars is the basic for amblyopia treatment.It is effective for most children with mixed astigmatism and amblyopia to take mydriasis optometry and amblyopia treatment.
9.Application of hands chopping cataract surgery in patients with microcoria
Bing-Jie, ZHANG ; Chun-Rong, ZHENG ; Wei, ZHOU
International Eye Science 2014;(6):1138-1139
AIM: To discuss the safety of hands chopping phacoemulsification in patients with microcoria cataract.METHODS:Hands chopping phacoemulsification with intraocular lens implantation was used for the microcoria cataract of 30 patients ( 32 eyes ) . Their visual acuity, pupil, and complication were observed in postoperative 1d,1wk and 1mo.
RESULTS: Postoperative naked vision be or more than 0. 3 were in 27 eyes (84. 4%) at one day, be or more than 0. 3 were in 30 eyes (93. 8%) at one week, be or more than 0. 5 were in 28 eyes (87. 5%) at one month. All pupil returned to round or oval. No synechia happened in postoperative 1mo.
CONCLUSION:Hands chopping nucleus operation is safe and effective for uveitis combined with microcoria phacoemulsification.
10.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.