1.Feasibility of microcoria optometry in screening for ametropia in school -age children
Zhe, SU ; Lin, XIAO ; Peng-Fei, LIU
International Eye Science 2015;(7):1287-1289
AlM:To discuss the feasibility of microcoria optometry in screening for children ametropia. METHODS: Totally 217 school - age children were selected, included 94 first-grade students ( 6 ~ 8 years old) and 123 fourth-grade students ( 9 ~12 years old ) . Refractive diopter was measured with automatic refractor RM-8000 to evaluate the accuracy of micocoria optometry in screening ametropia.RESULTS: After cycloplegia, both the mean sphere diopter and cylinder diopter in grade one students changed significantly (P<0. 05), the mean sphere diopter in grade four students changed significantly (P<0. 05), while the mean cylinder diopter had no statistical difference ( P>0. 05 ) in grade four students. Different refractive type: before and after mydriasis spherical myopia, spherical equivalent difference was 0. 263 ± 0. 618 and 0.216±0.653D, with statistical significance (P<0.01);ln hyperopia group, spherical myopia, spherical equivalent difference was 0. 947±0. 946 and 1. 039±0. 984D, with statistical significance ( P = 0. 000 ). The lenticular difference between the two groups were not statistically different ( P > 0. 05 ). Choosing small pupil computer optometry for ≤- 1. 00D, ≥- 0. 50D child myopia or hyperopia could get more accurate value of diagnostic cutoffs, Youden index was 0. 672 and 0. 580. CONCLUSlON: Microcoria optometry can be as a effective method of screening of children with ametropia, but if for optometry, school-age children must accept mydriasis.
2.Microtensile strength of composite-composite bonding:an in vitro study
Fei LIN ; Wei LIU ; Peng YAN ; Lin YUE
Journal of Peking University(Health Sciences) 2015;(1):124-128
Objective: To investigate the bonding strength of different resin composites .Methods:Methacrylate-based resin APX and silorane-based resin composite P90 were chosen in this study , with their corresponding adhesives Clearfil SE Bond ( SE) and Filtek P90 System Adhesive ( SA) .The speci-mens were divided into three groups:(1) bulk group, filling each block with the same composite , then curing;(2) direct filling group, curing and polishing one composite , then filling a new composite direct-ly;( 3 ) bonding group , after curing and polishing one composite , conditioning the surface with adhe-sives, then filling a new composite.Cut each resin blocks into 1 mm ×1 mm ×14 mm each piece, detec-ting the microtensile strength , and analyzing by One-Way ANOVA and LSD .Results: ( 1 ) The micro-tensile strength of the bulk group was the highest .(2) In direct filling group, the microtensile strength of 4 subgroups showed no statistical significance with each other but lower than that of the bulk group .(3) In bonding group, the microtensile strength of repairing with APX was higher than that with P 90.When repairing with same composite , the microtensile strength was higher if the resin type of substrates was same with restorations than that was different .The microtensile strength of adhesives SE was higher than that of SA.(4) The sorting of the microtensile strength: bulk>SE bonding APX >SA bonding APX>SE bonding P90=direct filling>SA bonding P90.Conclusion:Retention force is higher when substrates are repaired with methacrylate-based resins and corresponding adhesives .Retention force is lower when repaired with silorane-based composites and corresponding adhesives .Types of the substrate composites show no influence on the bonding strength .
3.Relationship between TSH and pregnancy outcomes during the first half of pregnancy in women
Fei ZHANG ; Wei PENG ; Yanlin LIN ; Yangang WANG ; Wenjuan ZHAO
Chinese Journal of Endocrinology and Metabolism 2017;33(1):52-55
[Summary] A total of 352 pregnant women were selected in Affiliated Hospital of Qingdao University. Serum levels of TSH and FT4 were determined and pregnancy outcome were observed in all subjects. According to the standard of American Thyroid Association(ATA) published in 2011 and the Chinese Guideline of Gestation Thyroid Disease published in 2012, the subjects were grouped into control(0. 1≤TSH≤2. 5 mIU/ L), observation(2. 5
5.Research progress on anti-tumor effect of Huaier.
Ai-lin YANG ; Zhong-dong HU ; Peng-fei TU
China Journal of Chinese Materia Medica 2015;40(24):4805-4810
Huaier (Trametes robiniophila) has been widely used as an adjuvant drug for cancer treatment in China. The anti-cancer effect of Huaier extract has been confirmed in liver cancer, lung cancer, breast cancer, ovarian cancer, gastric cancer, and so on. The main mechanisms by which Huaier exerts an anti-neoplastic effect include inhibition of the growth and proliferation of cancer cells, induction of apoptosis of cancer cells, suppression of angiogenesis, inhibition of the invasion and migration of cancer cells, regulation of oncogenes and tumor suppressor genes expression, improving immunity, and reversal of drug resistance in cancer cells. In order to provide references for further study and clinical application on anti-tumor effect of Huaier, the latest research progress on anti-tumor effect of Huaier in recent years is summarized in this paper.
Animals
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Antineoplastic Agents
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pharmacology
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Humans
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Trametes
6.In vitro transdermal delivery of Qingfei Xiaocuo gel based on principal component analysis.
Wei-gao REN ; Lin-xiu PENG ; Fei-fei LEI ; Cheng-xiang SUN ; Jin-huo PAN
China Journal of Chinese Materia Medica 2015;40(2):231-235
The objective of the present study was to establish a method based on principal component analysis (PCA) for the study of transdermal delivery of Chinese medicinal formulae, and to choose the best penetration enhancers for Qingfei Xiaocuo gel depend on this method. Using improved Franz type diffusion cell and excised rat skin in vitro as transdermal barrier, the receptive solution fingerprint was established by HPLC, harvesting the areas of the common peaks in the fingerprint, then the total factor scores of the concentrations at different times were calculated using PCA and were employed instead of the concentrations to compute the cumulative amounts (Q12) and enhancement ratio (ER), the latter of which were considered as the indexes for optimizing penetration enhancers. Compare to the control group, the ER of the other groups increased significantly and furthermore, 2.5% azone with 2.5% menthol manifested the best effect. PCA represent most information in the receptive solution, the method above could choose the best penetration enhancers, it could be a reference for the study of transdermal delivery of Chinese medicinal formulae.
Administration, Cutaneous
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Animals
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Drugs, Chinese Herbal
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analysis
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pharmacokinetics
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Gels
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In Vitro Techniques
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Male
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Medicine, Chinese Traditional
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Mice
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Principal Component Analysis
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Skin
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metabolism
8.Effect and Mechanism of Helix B Surface Peptide on Reducing Myocardial Ischemia Reperfusion Injury in Experimental Mice
Wei YOU ; Yingfeng LIU ; Fei MIAO ; Lin LIN ; Jiebo ZHANG ; Long WANG ; Kai ZHU ; Yongluan LIN ; Peng LIU
Chinese Circulation Journal 2015;(10):996-999
Objective: To investigate the effect and mechanism of helix B surface peptide (HBSP) on myocardial ischemia reperfusion injury (MIRI) in experimental mice.
Methods: The MIRI model was established by ligation of anterior descending coronary artery of the mice for 45 min and followed by corresponding treatment at 5 min before reperfusion. A total of 64 male ICR mice were randomly assigned to 4 group:①Sham group,②MIRI group, the mice received normal saline at 5 min before reperfusion,③HBSP group, MIRI mice received HBSP at 5 min before reperfusion and④HBSP+PD98059 group, MIRI mice received PD98059 (a speciifc blocker of ERK1/2) at 20 min before reperfusion and followed by HBSP at 5 min before reperfusion.n=16 in each group, all animals were treated for 2 hours. The area of myocardial infarction (MI) was detected by TTC-EB double staining method, the myocardial apoptosis rate was examined by TUNEL method, the levels of protein expression of ERK1/2 and phosphorylation of ERK1/2 were measured by Western blot analysis.
Results: Compared with MIRI group, HBSP group presented decreased MI area, decreased myocardial apoptosis rate and increased phopsphorylation level of ERK1/2, allP<0.05. Compared with HBSP group, HBSP+PD98059 group showed decreased phopsphorylation level of ERK1/2, increased myocardial apoptosis rate and increased MI area, allP<0.05.
Conclusion: HBSP may reduce the MI area via inhibiting myocardial apoptosis and therefore, protecting the experimental mice from MIRI; the mechanism might be related to the activation of ERK1/2 pathway.
9.Association of CMTM5 gene expression with the risk of in-stent restenosis in patients with coronary artery disease after drug-eluting stent implantation and the effects and mechanisms of CMTM5 on human vascular endothelial cells.
Teng Fei LIU ; Tao LIN ; Li Hui REN ; Guang Ping LI ; Jian Jun PENG
Journal of Peking University(Health Sciences) 2020;52(5):856-862
OBJECTIVE:
To elucidate the correlation between CKLF-like marvel transmembrane domain containing member (CMTM5) gene and the risk of in-stent restenosis (ISR) with coronary artery disease (CAD) patients and to detect the effects and mechanisms of CMTM5-stimulated genes on human vascular endothelial cells (ECs) proliferation and migration.
METHODS:
A total of 124 hospitalized patients in Shijitan Hospital were enrolled in this study. All the CAD patients were detected with platelet reactivity and grouped into two groups according to platelet reactivity; ISR was conformed by coronary angiography; RT-PCR method was used to detect CMTM5 gene expression; The CMTM5 over expression, reduction and control EC lines were established; Cell count, MTT, Brdu and flow cytometry methods were used to detect the proliferation of ECs, scratch and transwell experiments to test the migration of ECs, Western blot was used to detect signal path expressions.
RESULTS:
CMTM5 gene expression in HAPR (High on aspirin platelet reactivity) group was 1.72 times compared with No-HAPR group, which was significantly higher than No-HAPR group. HAPR group ISR rate was 25.8% (8 cases), the incidence of No-HAPR ISR group was 9.7% (9 cases), and the results showed that in HAPR group, the incidence of ISR was significantly higher than that in No-HAPR group (P=0.04, OR=0.04, 95%CI=1.16-7.52), which showed that CMTM5 gene was significantly correlated with the risk of ISR. In HAPR group ISR rate was 25.8% (8 cases), the incidence of ISR in No-HAPR group was 9.7% (9 cases), and the results showed that the risk of ISR in HAPR group was significantly higher than that in No-HAPR group. All the results showed that CMTM5 was significantly correlated with the risk of ISR in CAD patients (P < 0.05). CMTM5 overexpression inhibited the proliferation and migration ability of ECs (P < 0.05), PI3K/Akt signaling pathways were involved in the role of regulation on ECs.
CONCLUSION
Our results revealed that CMTM5 gene was closely related with ISR, CMTM5 overexpression may repress ECs proliferation and migration through regulating PI3K-Akt signaling.
Chemokines
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Coronary Artery Disease/surgery*
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Coronary Restenosis
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Drug-Eluting Stents/adverse effects*
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Endothelial Cells
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Humans
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MARVEL Domain-Containing Proteins
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Phosphatidylinositol 3-Kinases
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Tumor Suppressor Proteins
10.Association between CMTM5 gene and coronary artery disease and the relative mechanism.
Teng Fei LIU ; Tao LIN ; Li Hui REN ; Guang Ping LI ; Jian Jun PENG
Journal of Peking University(Health Sciences) 2020;52(6):1082-1087
OBJECTIVE:
To elucidate the correlation between CKLF-like MARVEL transmembrane domain containing member 5 (CMTM5) gene and the risk of coronary artery disease (CAD), and to detect the effects of CMTM5 gene expression changes on the ability of adhesion and migration of THP-1 cells.
METHODS:
Using case-control method, a total of 700 hospitalized patients in Shijitan Hospital were enrolled in this study. CAD were diagnosed by coronary angiography, which was defined as at least one blood vessel diameter stenosis ≥50% according to the result of coronary angiography. Reverse transcription-polymerase chain reaction (RT-PCR) method was used to detect CMTM5 gene expression; enzyme linked immunosorbent assay (ELISA) method to detect the plasma level of CMTM5; and Logistic regression to analyze CMTM5 genes and the risk of CAD. Human vascular endothelial cells (ECs) and THP-1 cells were cultivated, adhesion and Transwells experiments were used to evaluate the chemotactic capabi-lity of CMTM5 gene on THP-1 cells.
RESULTS:
In this study, 350 CAD patients matched with 350 control patients were included. RT-PCR results revealed CMTM5 mRNA expression in CAD group was 3.45 times compared with control group, which was significantly higher than that in control group (P < 0.05). The levels of CMTM5 plasma protein in CAD group was (206.1±26.9) μg/L, which was significantly higher than that in control group (125.3±15.2) μg/L (P < 0.05). After adjusted for the risk factors of age, gender, BMI, smoking, hypertension, diabetes and hyperlipidemia, Logistic regression analysis results indicated that CMTM5 was the susceptibility factors of CAD, which still had significant correlation with CAD (P < 0.05). Adhesion and Transwells experiments results revealed that the numbers of adhesion and migration of THP-1 cells in CMTM5 overexpression ECs group (EO group) were significantly higher than that in lenti-mock infected ECs group (EO-MOCK group), non-infected ECs group (EN group), lenti-mock infected ECs group (ES-MOCK group), and CMTM5 suppression ECs group (ES group). On the contrary, the numbers of adhesion and migration of THP-1 cells in ES group were significantly lower than that in the other four groups (P < 0.01).
CONCLUSION
CMTM5 gene was closely related to the development of CAD. CMTM5 overexpression promoted the adhesion and migration of THP-1, which might play a part in the mechanisms of atherosclerosis and CAD.
Chemokines
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Coronary Angiography
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Coronary Artery Disease/genetics*
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Endothelial Cells
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Humans
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MARVEL Domain-Containing Proteins
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Tumor Suppressor Proteins