1.Study on the safety of eye anterior tissues during plasmin and hyaluronidase inducing posterior vitreous detachment in pigs
Xue-Xia, LIU ; Hai-Yang, WU ; Hai, TAO
International Eye Science 2007;7(4):900-905
· AIM: To evaluate the safety of eye anterior tissue when plasmin (Pm) and hyaluronidase (HS) are injected into pigs'vitreouses to induce posterior vitreous detachment(PVD).· METHODS: 15 pigs without ocular diseases were randomly assigned to groups A,B,C (5 in each group). For each pig, one eye was experimental, the other eye was control. The experimental eye received intravitreal injection with enzyme:group A: 50U(0.1mL) HS; group B: 0.5U(0.1mL) Pm; group C: 0.5U(0.05mL) Pm combined with 50U(0.05mL) HS; while the control eye received intravitreal injection with equivalent dose of balanced salt solution (BSS). Postoperative reactions in the eyes were carefully observed by clinical examinations such as slit-lamp microscopy and direct and indirect ophthalmoscopy and measurement of intraocular pressure (IOP). Eyeballs were extirpated 7 days after the operation and histological examination was carried out. The corneas and irises were observed under light microscope (LM). The epithelia of ciliary bodies and lens were studied with transmission electron microscope (TEM).· RESULTS: In all experimental eyes and control eyes of group A, B and C, histological examination showed: under LM ,the corneas and irises of experimental eyes had no histological abnormality in structure; Under TEM, epithelial cells of ciliary bodies and the lens were tightly arrayed with clear cellular boundaries, clear intracellular structure, intact cell membranes, and intact nuclei; There was no significant difference in the clinical examinations and in the change of IOP between preoperation and postoperation, between the experimental group and the control group.· CONCLUSION: With 0.5U Pm and HS 50U injected into pigs' vitreouses to induce PVD, alone or combined with two enzymes, evaluation revealed no evidence of toxicity on the eye anterior tissue. The dosage was proved to be safe for eye anterior tissue.
2.Prospect of development of military dermatology
Xueqin YANG ; Yufeng LIU ; Hai WEN
Medical Journal of Chinese People's Liberation Army 2001;0(08):-
Dermatology is closely related to the health of officers and soldiers both in peace time and war time. Under special circumstances, skin diseases have a direct impact on efficiency and combat effectiveness of the military. Research work on fungal infections and psoriasis in the PLA has been playing a leading role domestically, as well as reaching international advanced standards. In the past 20 years, PLA dermatologists had been granted 32 second awards of Army Science and Technology Advancement Prize. Among them, the results of a series of research on fungal infections accomplished by the Second Military University was granted a second award of the State Science and Technology Advancement Prize. In the past 5 years, the team of dermatology profession has been growing rapidly in the PLA. Up to now, there are 6 departments with 11 tutors who are entitled to train postgraduate students seeking doctorate degree, and about 100 of them have succeeded in thesis defense and conferred the doctoral degree. However, at present, there are still many problems unsolved and further research is necessary. The most important task is, under the guide of bio-physic-social medical modality, various sophisticated technologies should be applied in basic research, prevention, diagnosis, treatment etc. in the field of dermatology, in order to assure the physical and psychological health of the servicemen.
5.Recent advances of nasal natural killer/T-cell lymphoma.
Yong LIU ; Hai-yu YANG ; Ming-zhi LU
Chinese Journal of Pathology 2005;34(12):809-812
6.Research Progress in Anti-tumor Mechanism of Traditional Chinese Medicine
Xueli LIU ; Xuefeng ZHOU ; Junyu WANG ; Hai YANG
China Pharmacist 2016;19(6):1158-1162
Traditional Chinese medicine is the crystallization of civilization and wisdom of Chinese nation , in which the complex components exhibit unique advantages in anti-tumor therapy through multi-channel and multi-target.Through the summary of the litera-tures recently, the research on anti-tumor mechanism of traditional Chinese medicine was reviewed to provide reference for the deep re -search and clinical application of traditional Chinese medicine .
7.Study on Function of Osteoclast in Infants and Toddlers
hai-he, YANG ; xia, LIU ; hui-feng, ZHANG ; yuan, CHEN
Journal of Applied Clinical Pediatrics 2006;0(13):-
Objective To investigate the osteoclast′s function levels in infants and toddlers and the relationship between the osteoclast function and sex,age,body length,body weight and body mass index(BMI).Methods Sixty-eight children(37 boys and 31 girls,aged from 1 to 36 months) were studied.All of the children were in good health.These children were divided as infants group and toddlers group according to their age.Just before the samples were collected,the children′s body weight,body length were measured and the BMI were calculated.Two biochemical markers,such as serum tartrate-resistant acid phosphatase 5b(TRAP5b) and urine deoxypyridinoline(DPD) were measured.Results The difference of serum TRAP5b concentration between infants and toddlers was significant at the level of P
8.Effects of new derivatives of 1H-isoindole-1,3(2H)-dione on angiogenesis in chick chorioallantoic membranes
Jingxia LIU ; Chaoliang LONG ; Yonglin YANG ; Hai WANG
Chinese Pharmacological Bulletin 2003;0(12):-
Aim To investigate the effects of new derivatives of 1H-isoindole-1,3(2H)-dione on angiogenesis in chick chorioallantoic membranes(CAM). Methods The blood vessels of CAM were calculated to determine the antiangiogenic effects of different new compounds. Results Among the 18 new derivatives of 1H-isoindole-1,3(2H)-dione , compound 1,2,3,4,11 and 13 showed significant inhibition on angiogenesis of CAM.Conculsion The 6 new derivatives of 1H-isoindole-1,3(2H)-dione screened out in this experiment may be novel angiogenesis inhibitors.
9.The evaluation value of the concentration of serum cholinesterase combined with acute physiology and chronic health evaluation Ⅲ in predicting the condition and prognosis of patients with severe acute pancreatitis
Sheng ZHENG ; Jinhui YANG ; Liying YOU ; Yingmei TANG ; Hai LIU
Chinese Journal of Postgraduates of Medicine 2012;35(19):36-39
ObJective To explore the value of acute physiology and chronic health evaluation Ⅲ(APACHE Ⅲ ) score and the concentration of serum cholinesterase (ChE) in predicting the condition and prognosis of patients with severe acute pancreatitis (SAP) within 24 hours afar hospitalization.Methods Sixty-two SAP patients were enrolled and APACHE Ⅲ score was assessed and the concentration of serum ChE was detected within 24 hours after hospitalization.The correlation between the concentration of serum ChE,APACHE Ⅲ score and the condition and prognosis was analyzed.Results There were 44 survivalcases and 18 dead cases.The APACHE Ⅲ score of the surval patients was significantly lower than that of the dead patients [(52.16 ± 13.76) scores vs.(97.10 ± 15.85) scores] (P<0.01).The concentration of serum ChE of survival patients was significantly higher than that of the dead patients [ (3685 ± 466) U/L vs.(2109 ± 345) U/L] (P< 0.01 ).The higher APACHE Ⅲ score was,the lower the serum ChE concentration was,and the higher the mortality rate was.APACHE Ⅲ score and the concontration of serum ChE both had statistical significances compared with the prognosis in the Logistic regression analysis (P =0.0043,0.0075);APACHE Ⅲ score (95% CI 1.0306-1.1507),the concentration of serum ChE (95% CI0.9986-1.0125 ).ROC areas under curve (AUC) of APACHE Ⅲ score,serum ChE concentration with the prognosis were 0.936 and 0.882,respectively.There was no significant difference (P=0.0820).In combined prediction of APACHE Ⅲ score and serum ChE concentration,AUC was 0.952,and its predicting accuracy was higher than either APACHE Ⅲ score or serum ChE concentration (P=0.0016,0.0027).Conclusions APACHE Ⅲ score and the concentration of serum ChE both are significantly correlated with the condition and prognosis of SAP patients.Their combined detection can significantly improve the accuracy of prognosis judgement and provide some clinical guidances for treatment.
10.Preparation of Chitosan Modified TFu Solid Lipid Nanoparticles
Baohua MA ; Hai YANG ; Xueli LIU ; Xuefeng ZHOU
China Pharmacist 2015;18(12):2050-2053
Objective:To study the preparation methods of N3-O-toluyl-flulorouracil (TFu) solid lipid nanoparticles(SLNs) and chitosan modified TFu SLNs. Methods: TFu-SLNs and chitosan modified TFu-SLNs were prepared by film dispersion-homogenization methods. The morphology, particle diameter and zeta potential were detected. The preparation methods were optimized by single factor experiments and an orthogonal design, and the stability of the nanoparticles was also studied. Results: The mean diameter of TFu-SLNs was 160. 2nm, and the zeta potential was -33. 2 mV. The mean diameter of chitosan modified TFu- SLNs was 400. 3nm, and the zeta potential was +12. 87 mV. With the concentration increase of chitosan, the zeta potential was enhanced. The optimized TFu-SLNs had higher reproducibility and stability. Conclusion:The formula of TFu-SLNs is optimized by an orthogonal design to obtain the optimal formula of TFu -SLNs and chitosan modified TFu-SLNs.