Diabetic retinopathy (DR) is one of the most significant microvascular complications of diabetes,and its incidence increases with the prolongation of DM;meanwhile,it can lead to severe vision loss.Recently,the pathogenesis of DR has been one of the focuses both at home and abroad,but the basic mechanisms are not fully elucidated.More and more scholars believe that DR may be a chronic and low degree of inflammatory response.Moreover,it is well established that microglia is a monocyte-macrophage,with antigen-presenting function.Especially in the retina,as microglia is activated,followed by the release of a large number of inflammatory factors,microglia involves in DR inflammatory response.Understanding the activation mechanism of microglia can provide a new perspective for the prevention and treatment of DR.Therefore,recent advances in activation of microglia in diabetic retinopathy and its intervention mechanism will be reviewed in the article.

Aged ; Humans ; Kallikreins ; analysis ; Male ; Middle Aged ; Prognosis ; Prostate-Specific Antigen ; analysis ; Prostatic Neoplasms ; diagnosis

Adolescent ; Child ; Child, Preschool ; Endoscopy ; Esophageal and Gastric Varices ; surgery ; Female ; Humans ; Infant ; Ligation ; Male

AlM: To investigate the efficacy of photodynamic therapy ( PDT) and intravitreal injection with ranibizumab on macular choroidal neovascularization ( CNV ) of pathologic myopia ( PM) .
METHODS: There were patients ( 32 eyes ) who were diagnosed as PM with CNV. Randomly selected 16 cases ( 16 eyes ) which were given the PDT treatment ( PDT group ) . The remaining were given both PDT and intravitreal injection with ranibizumab ( combination group) . There is no significant difference on macular edema between two groups. We analyzed the changes in the best corrected visual activity ( BCVA) , optic coherence tomograph ( OCT ) and fundus fluorescein angiography (FFA) before and 1, 6mo after treatment.
RESULTS:One month after the treatment in PDT group:the BCVA increased while the CMT decreased compared with that of pretreatment (P<0. 05). One month after the treatment in combination group: the BCVA increased while the CMT decreased significantly compared with that of pretreatment (P<0. 01);the changes of BCVA and CMT showed statistically significant between the two groups ( P<0. 05). Six month after the treatment in PDT group: the BCVA increased while the CMT decreased compared with that of pretreatment ( P <0. 05 ). Six month after the treatment in combination group: the BCVA increased while the CMT decreased significantly compared with that of pretreatment ( P <0. 01 ); compared with changes of BCVA and CMT in two groups, the difference was significant after treatment (P<0. 05). Compared 1mo with 6mo after treatment:there was no significant difference in the BCVA and CMT changes (P>0. 05). One month after treatment: in PDT group, FFA showed no leakage or reduced leakage of CNV in 11 eyes (69%), and the fundus remained leaky in 5 eyes ( 31%); in combination group, FFA showed no leakage or reduced leakage of CNV in 13 eyes (81%);the fundus remained leaky in 3 eyes (19%). Six month after treatment:in PDT group, FFA showed no leakage or reduced leakage in 10 eyes ( 62. 5%); the fundus remained leaky in 4 eyes ( 25%); two eyes ( 12. 5%) relapsed leakage; in combination group, FFA showed no leakage or reduced leakage of CNV in 15 eyes (94%);the fundus remained leaky in 1 eye (6%).
CONCLUSlON: Not only PDT but also PDT and intravitreal injection with ranibizumab can block CNV of pathologic myopia completely or partly, and reduce the danger causing descent of vision. Effects and the stability of the combination therapy is superior to PDT treatment.

Materials Testing ; instrumentation ; Plastics ; chemistry ; Stress, Mechanical ; Temperature ; Water

Subtilis bacillus spores for novel vaccine delivery has attracted significant interest of more and more researchers by their unique biological characteristics. In this review,the structure and immunogenicity of spores were briefly discussed, then special emphasis placed on the use of recombinant spores as vaccine delivery vehicles,some ideas for further studies on surface display of recombinant vaccines on Subtilis bacillus spores were also proposed

Objective Current study used quantitative research methods to reveal the regional medical information research in hotspots, and summarize the mainstream knowledge base to provide the reference for researchers in the field.Methods A systematic search was conducted to find publications in CNKI, Wanfang Database and PubMed.Bibliometrics method, social network analysis, coword analysis, principal component analysis and multidimensional scaling analysis were used in this study.Results ① total 11,482 articles published from 1984 to 2013 were screened out.The development of research publications showed an increasing trend, and the papers were distributed in 1233 types of journals.The number of authors who located in Beijing, Guangdong, Jiangsu, Shanghai,Shandong ranked top five.② The top 59 high frequency key words were identified that representing the hot contents in regional health information technology research field, and was used to build knowledge network map.Among them, HIS, electronic medical records, hospital information technology,information technology were at the core of this research area.③ We summarized research and development in the field of nine major mainstream knowledge base include: research on electronic medical records, medical personnel, information systems, information security, information networks, information sharing, information integration, information technology, and information management, resident' s health record related studies;qualitative analysis and problem-oriented research;HIS and telemedicine-related research;community related research, two-way referral related research, health care reform and cloud computing-related research, telemedicine related research and V43 related research.Conclusions The development of regional medical information research has good momentum and closely follow the international trend, but the research contents and methods are still distance from international standard..Research mostly focused on hospital information system construction, regional research and applied research are weak and need to be further improved.

BACKGROUND:Hydroxyapatite/poly-L-lactic acid composite can wel improve the brittleness and mechanical properties of the hydroxyapatite. OBJECTIVE:To study the biocompatibility of hydroxyapatite/poly-L-lactic acid composite biomaterials with periodontal ligament cels. METHODS:Passage 4 human periodontal ligament cels at a density of 5×109/L were cultured with hydroxyapatite/poly-L-lactic acid composite as experimental group, and human periodontal ligament cels cultured alone as control group. Cel proliferation was detected within 7 days of culture; alkaline phosphatase activity was detected at 24, 48 and 72 hours of culture; and type I colagen expression was detected at 72 hours of culture. RESULTS AND CONCLUSION:There was no significant difference in the absorbance value of cels between the two groups at 1-7 days of culture. The alkaline phosphatase activity of cels at 48 and 72 hours was significantly higher than that at 24 hours (P < 0.05) in the two groups, but there was no difference between the two groups. The expression of type I colagen had no difference between the two groups. These findings indicate that the hydroxyapatite/poly-L-lactic acid composite biomaterial has good cel compatibility.

Objective To explore the high-resolution CT manifestation of chronic otitis media with cholesteatoma. Methods clinical and high-resolution CT manifestation of 31 cases of chronic otitis media with cholesteatoma were analyzed. All the cases were confirmed by operation and pathology. Results High-resolution CT can accurately show the signs of soft-tissue occupancy and bony-erosion of cholestcatoma in middle ear which originate from various sites and of various sizes.confirmed by operation, accuracy were as high as 93.5%-100% . Conclusion high-resolution CT is extremely accurate in diagnosis of chronic otitis media with cholesteatoma.

Objective This study aims to understand the characteristics of the time sequence of ICR mouse first mandibular molar tooth germ development through dynamic observation.Methods Tooth germ of Embryos (E11.5,E12.5,E13.5,E14.5,E15.5,E16.5,E17.5 and E18.5) and postnatal (PN1,PN2) mice were obtained.The heads (E11.5-E15.5) and mandibles (E16.5-PN2) of mice were dissected,fixed and embedded for serial sections and HE staining.All the results were assessed under light microscopy.Results The tooth germ underwent various development stages including the bud,cap and bell stages.Mouse odontogenesis was initiated at E11.5.Proliferation of oral epithelium formed the bud stage at E13.5.Then the cap stage was observed at E14.5-E15.5 and the bell stage was appeared beginning from E16.5.The pre-dentin was observed at PN1,as well as the dentin at PN2.Conclusions Establishing the regular development pattern of the first mandibular molar of ICR mice will provide a reliable basis for the future use in the specific tooth germ developmental research.