1.Clinical research of protein-free calf blood extract eye gel for corneal epithelial defect
Xiao-Xia, NIU ; Yun-Feng, LI ; Lu-Yang, ZHAN
International Eye Science 2014;(7):1313-1315
AlM: To evaluate the clinical effect of 200g/L protein-free calf blood extract eye gel for corneal epithelial defect.METHODS: One hundred and sixty - eight cases of corneal epithelial defect ( 58 cases with herpes simplex keratitis; 24 cases with chemical injury; 85 cases with pterygium operation injury ) were randomly divided into two groups: 84 eyes were treated with protein-free calf blood extract eye gel; 84 cases were treated with basic fibroblast growth factor eye gel ( bFGF ) . The bFGF and protein-free calf blood extract eye gels were used 4 times a day. The treatment course was 7d. Epithelial defect restoration, local symptom and sign were observed.
RESULTS: The difference between pre-treatment and post-treatment was significant ( P<0. 01 ) in the two groups. The effect of protein-free calf blood extract eye gel (83. 3%) group was prior to that of bFGF (69%) for corneal epithelial defect. The effective rate of protein-free calf blood extract eye gel in the herpes simplex keratitis, chemical injury and pterygium operation injury was 72. 4%,69. 2% and 95. 2%. Localized stimulus and adverse reaction of all over the body were not been observed.
CONCLUSlON: Protein-free calf blood extract eye gels is valuable and safe for corneal epithelial defect.
3.The signal transduction pathway of rats with liver fibrosis regulated by leptin and interfering effects of mistletoe alkali
Xia MENG ; Xuecong WANG ; Ping FENG ; Jing LU ; Xuejiang WANG
Chinese Journal of Comparative Medicine 2015;(10):1-6
Objective To investigate the signal transduction pathway mechanisms of rats with liver fibrosis regulated by leptin and interfering effects of mistletoe alkali .Methods The hepatic fibrosis in rats model was established by injecting carbon tetrachloride .Forty-five SD rats were randomly divided into normal group ,model group and therapeutic group.All rats except rats in normal group were intraperitoneally injected with 40%carbon tetrachloride in peanut oil with a dose of 2.0 mL/100g according to the body weight twice a week for 8 weeks.Then, the therapeutic group was given mistletoe alkali (8g/(kg· d)) for 8 weeks via gastrogavage.Rats in normal and model group were served with distilled water at the same time.At the end of the 16th week, blood and tissue specimens were taken from all the rats .The influence of mistletoe alkali on liver morphology in liver fibrosis rat model was reviewed by HE and Masson staining .The effects of mistletoe alkali on the expression of Leptin and its receptor ( OB-Rb ) in HSC in fibrosis rat model were determined by immunohistochemistry (IH).The expression of JAK2, STAT3 and the activity of phospho -JAK2, phospho-STAT3 were detected by Western blotting analysis .Results The degree of fibrosis of the model group was more severe than the normal group and the treatment group , which suggested that mistletoe alkali can reverse liver fibrosis in rats . Immunohistochemical staining showed that mistletoe alkali reduced the hepatic expression of leptin and OB -Rb in rats with liver fibrosis in comparison with their expression in the model group .Compared with the normal group , the expression of JAK2 and STAT3 increased in the model group .However, the expression of JAK2 and STAT3 decreased in the medication groups compared with the model group .Conclusion Mistletoe alkali can effectively ameliorate liver fibrosis in rats possibly through inhibiting hepatic leptin and its receptor expressions , which through inhibiting hepatic leptin and its receptor expressions , thus inhibit the JAK2/STAT3 signaling pathway .
4.Medical voucher system in Hong Kong and Macao and its implications to mainland China
Feng CHANG ; Qiang XIA ; Yun LU ; Penglei CUI ; Shasha YANG
Chinese Journal of Health Policy 2015;8(3):40-45
It is important and difficult to establish the market competition mechanism in the health care re-form. Medical voucher system in Hong Kong and Macao can provide policy guidelines for Mainland China to promote institutional innovation, force public hospital reform and the rational allocation of medical and health resources. This paper introduced the origin and development of medical voucher system. Based on the description of the implementa-tion background, similarities and differences and effects of medical voucher system in Hong Kong and Macao, the pa-per found that medical voucher system could help encourage the demander to make more frequent use of medical serv-ices, improve their consciousness of prevention and health care and promote family doctor system. Through analyzing the applicability of medical voucher system in mainland China, the paper pointed out it was consistent with the reform orientation and could be served as a useful supplement to the health care system to improve medical insurance, medi-cal assisstance system as well as an effective measure to develop private medical institutions.
5.Regulatory effect of a Chinese medicine prescription Hu Qi Shan on the telomerase activity in hepatic precancerous lesions in rats
Xia MENG ; Shuhong LIU ; Xia LI ; Ping FENG ; Jing LU ; Xuejiang WANG
Chinese Journal of Comparative Medicine 2016;26(10):36-42
Objective To explore the possible mechanism of action of telomerase in hepatic precancerous lesions, and the regulatory effect of a Chinese medicine prescription HU Qi Shan ( HQS) and its principal drug mistletoe alkali on the telomerase activity in rat liver tissues.Methods Rat model of hepatic precancerous lesions was established by Solt-Farber two-step protocol.The model rats were randomly divided into 5 groups, including the model group, high-dose HQS [8 g/(kg· d)] group, low-dose HQS [4 g/(kg· d)] group, and mistletoe alkali[8 mg/(kg· d)] group.γ-Glutamy-transpeptidase (γ-GT) was analyzed by immunohistochemistry.AFP was detected by immunofluorescence technique.The telomerase activity was detected using a quantitative telomerase detection kit.The expression of NF-κB P65 was detected by immunohistochemistry.The cytoplasmic protein IκB-αwas detected by western blotting.Results After treated with HQS and mistletoe alkali, the areas ofγ-GT-positive foci and number of AFP-positive cells in the liver tissus were significantly decreased than those of the model group ( P<0.05 for both) , the telomerase activity was decreased, the number of NF-κB P65-positive cells was also decreased ( P <0.05 ) , whereas the intracytoplasmic expression of IκB-αproteins was significantly increased ( P <0.05 ) .Conclusions HQS and mistletoe alkali can suppress the telomerase activity.Its possible mechanism may be through inhibition of the over-expressed apoptosis-related genes such as NF-κB P65 and increase the expression of IκB-αdecreasing the telomerase activity.
6.Bibliometric Analysis of core journal papers published by nursing staff in a third-grade class-A hospital during 2013-2015
Xuan TAN ; Caihong LU ; Zhengrong WANG ; Lin PENG ; Xia JIANG ; Feng FENG ; Lin YE ; Shu LEI
Modern Clinical Nursing 2017;16(6):57-60
Objective The nursing staff's output and journals distribution of core scientific journals papers were analyzed, providing evaluation data and a decisive basis for scientific research management. Methods A retrospective analysis was performed to the publication of core journals papers of nursing staff in 2013-2015 based on the publication from different nursing positions , the ranking of published nursing papers from different departments and different journals by using analysis method of bibliometric. Results About 1550 nursing papers were published , of which the number of authors whose paper was published in core journals was 216 , the number of papers published in core journals was 378, and 38 authors published more than 3 papers (17.6%). The core journals papers published rate in different position was statistically significant (P<0.01). The papers published journals were concentrated in nursing class. Dominated the first 3 places in the list of core journals paper number of departments were department of nursing , cancer center and operation room, respectively. Conclusion In order to improve the nursing scientific research level of nursing staff, it is necessary to establish a theoretical system of scientific knowledge training , formulate a long-term effective mechanism in paper management , focus on scientific research talent introduction and training and mobilize the nursing research enthusiasm of nursing staff.
7.Expression of Matrix Metalloproteinase-9 and Its Tissue Inhibitor in Cutaneous Squamous Cell Carcinoma
Jun FENG ; Liehua DENG ; Gang ZHAO ; Tao LU ; Guangyu JIANG ; Chaoyong XIA ; Jie LIU ; Ze LIN
Chinese Journal of Dermatology 2003;0(07):-
Objectives To investigate the expression of matrix metalloproteinase-9 (MMP-9) and its tissue inhibitor (TIMP-1) in cutaneous squamous cell carcinomas (SCC) and the relationship between the expression and invasive growth and metastasis of SCC. Methods Immunohistochemical method of streptavidin-peroxidase (SP) was used to detect the expression of MMP-9 and TIMP-1 proteins on the paraffin embedded sections of 65 patients with cutaneous SCC and 5 cases of normal epidermis. The immunohistochemical results were analyzed quantitatively using an image analysis system. Results MMP-9 and TIMP-1 proteins were diffusely expressed on the tumor nests and the mesenchymal cells around the nests, while in normal epidermis MMP-9 and TIMP-1 were weakly positive. The expression level of MMP-9 protein and the ratio of MMP-9/TIMP-1 were higher in aggressive SCC group than those SCC in situ group (t = 2.33 and 2.36, respectively, P
8.Differentiating true progession from pseudoprogression in patients with gliobastomas using dynamic contrast-enhanced MRI
Xibin XIA ; Pingsheng HU ; Zhengwen HE ; Fengjiao YANG ; Feng BI ; Qiang LU ; Xiaoping YU
Journal of Chinese Physician 2017;19(8):1152-1155
Objective To investigate the clinical application and manifestation of dynamic contrastenhanced MRI (DCE-MRI) in differentiating true progession from pseudoprogression in patients with gliobastomas.Methods Twenty five glioma patients were treated with postoperative concurrent chemoradiotherapy and enrolled in this study.All patients were underwent DCE-MRI using a 1.5T scanner.Fifteen patients were confimmed by secondary pathology or clinical and imaging follow-up of patients with gliomas true progession (TP),10 patients were pseudoprogress (PP).Nonparametric Mann-Whitney test was used to compare perfusion parameters between two groups (TP and PP),were used for receiver operating characteristic (ROC) curve analysis to clear if these parameters can be the indicators to differentiate true progession from pseudoprogression.Results Ktrans (volume transfer constant),Ve (fractional volume of extravascular extracellular) values between TP and PP glioma groups were statistically significant,K and Ve values were significantly higher in the TP group than in the PP group (P < 0.05).The areas under the ROC curve are 0.990 and 0.847,respectively.Kep (efflux rate constant) value,Vp (fractional volume of plasma) value in the identification of glioma TP group and PP group was not statistically significant (P > 0.05).Conclusions DCE-MRI can be used to identify glioma TP and PP,Ktrans value and Ve value have clinical significance.
9.Comparative study on the correlation of penetrating keratoplasty rejection with different cornea preservation methods
Xiao-Xia, NIU ; Jing, HONG ; Yun-Feng, LI ; Lu-Yang, ZHAN
International Eye Science 2014;(6):1005-1008
AIM: To understand the relation between the penetrating keratoplasty rejection and the methods of cornea preservation.
METHODS: The 30 Wistar rats as donator and 60 SD rats as receptor were used to establish the animal models of penetrating keratoplasty rejection. And 60 SD rats were randomly divided into 3 groups. Donor cornea of Wistar rats preserved in different methods were used separately in 3 groups. The penetrating keratoplasty rejection index ( RI ) , means survival time ( MST ) of corneal grafts and pathological changes in post -operation were analyzed.
RESULTS: The MST was ( 10. 4±1. 70 ) d in moist-chamber- preserved group (Ⅰ), ( 12. 9 ± 1. 81 ) d in medium-term-preserved group (II) and (16. 1±2. 57) d in cryopreserved group ( Ⅲ) . The MST in the cryopreserved group was evidently prolonged, showing a significant correlation compared with other two groups (P<0. 01). The sections with HE staining revealed that the severity of inflammation in Ⅲ group was reduced compared with that of Ⅰ, II group after 10d of keratoplasty.
CONCLUSION: The postoperative rejection of penetrating keratoplasty in rats is decreased and rejection time is delayed in cryopreserved cornea.
10. Research progress of the relationship between endothelial progenitor cells and cardiovascular complications in diabetes
Yu-hua LIU ; Lu ZHAI ; De-feng ZHAO ; Xia DAI
Journal of Medical Postgraduates 2020;33(1):88-92
70% to 80% of people with diabetes died from cardiovascular complications, which had become the leading cause of death in diabetic patients. Cardiovascular complications in diabetic patients are mainly associated with vascular endothelial dysfunction and poor neovascularization. Its important influencing factors are changes in the number of endothelial progenitor cells and dysfunction. Hyperglycemia in diabetic patients can cause endothelial progenitor cell dysfunction, inhibit its proliferation ability, angiogenesis ability and paracrine effect. In order to provide research ideas for the prevention and treatment of cardiovascular complications in diabetic patients, this article aims to review the relevant mechanism of the effect of hyperglycemia on the number and function of endothelial progenitor cells in patients with diabetes, and the application of endothelial progenitor cells in the treatment of diabetic cardiovascular disease.