Clinical Characteristics of Optic Disc Vasculitis / 中山大学学报(医学科学版)

[Objective]To investigate the etiology,clinical manifestation,treatment and prognosis of optic disc vas-culitis.[Method]Twenty-four eyes of 21 patients were enrolled in this retrospective study.Eye examinations,treatment, and effect were recorded.[Result]Six were male and 15 were female.The age was between 19 and 43 years old(average:28.7±1.6).85.7% of the patients referred to the clinic with mild to moderate decreased vision.Edema of the optic disc can be seen in both types while tortuous veins can also be found in type 2.Similar characteristics were noticed in OCT,FFA, and etc.With a follow-up of 4.52±0.98 months after treatment(prednisone:initial dose 1.0-1.2 mg/kg),the BCVA of the affected eyes improved significantly.[Conclusion]Optic disc vasculitis is affected by autoimmune disorder,infection,hy-perlipidemia,and etc.Edema of the optic disc with/without tortuous veins and retinal hemorrhage can be noticed.Similar diseases should be excluded in avoidance of misdiagnosis. Systemic examination and complete solution should be per-formed.Glucocorticoid helps to improve the visual function.The application of anti-VEGF is effective in secondary macu-lar edema.However,the long-term efficacy is awaiting being confirmed.

Changes of outer retinal thickness with increasing age in normal eyes / 国际眼科杂志(Guoji Yanke Zazhi)

·AIM: To comprehensively investigate the relationship between outer retinal layer thickness and age in normal eyes. ·METHODS: One hundred normal eyes of 100 subjects who underwent spectral - domain optical coherence tomography ( SD - OCT ) were included in this retrospective study. The distances between the external limiting membrane ( ELM ) line and the photoreceptor inner segment/outer segment ( IS/OS ) line ( ELM-IS/OS), the IS/OS line and the cone outer segment tips (COST) line ( IS/OS-COST), the COST line and the retinal pigment epithelium ( RPE) complex ( COST-RPE) and the full retinal thickness ( RT) were measured at the fovea and on four quarters. The relationship between thickness and age or sex was then analysed. ·RESULTS: A thinner RT was observed in women in a multiple regression analysis ( men: 234. 47 ± 16. 79 μ m;women: 223. 13±15. 43 μ m). The RT on the nasal quarter and the ELM-IS/OS thickness at the fovea and on the four quarters were significantly and negatively correlated with age. The IS/OS-COST and COST-RPE thicknesses at the fovea and on the four quarters were not significantly correlated with age or sex, respectively. The RT at the fovea was significantly thinner than on the four quarters. The ELM - IS/OS, IS/OS - COST and COST - RPE thicknesses at the fovea were significantly thicker than on the four quarters. ·CONCLUSION: In normal eyes, the RT thickness on the nasal quarter and the ELM - IS/OS thickness were significantly and negatively correlated with age. The IS/OS - COST and COST - RPE thicknesses were not significantly correlated with age or sex.

In vitro screening and in vivo identification of rat IκBα-siRNA / 国际眼科杂志(Guoji Yanke Zazhi)

AIM: To seek a small interfering RNA ( siRNA ) sequence targeting rat inhibitor of nuclear factor kappa Bα ( IκBα) that can specifically and effectively suppress IκBα mRNA expression of rat ciliary muscles in vivo.METHODS:Three IκBα specific double stranded siRNAs were designed and synthesized. They were transfected into rat A7r5 cells which express IκBα gene. Flow cytometry was used to assess transfected efficiency. The mRNA and protein levels of IκBα were examined by Real Time quantitative polymerase chain reaction ( Real Time-PCR ) and western blot to screen a candidate valid sequence with the highest inhibitory rate. The Cy3 labeled non-specific control siRNA or the candidate valid siRNA was then injected into rat anterior chamber. Distribution of Cy3- siRNA in rat ciliary muscles was viewed by fluorescence microscopy, and the inhibitory effect in vivo of the valid siRNA was identified via Real Time-PCR and immunofluorescence. RESULTS: The suppression effect of the siRNA targeting the CTACGATGACTGTGTGTTT of IκBα gene was most obvious by vitro screening. By anterior chamber injection, this valid siRNA could reach rat ciliary muscles and effectively suppress IκBα gene expression with the highest inhibitory rate of 59. 0% on mRNA level at 24h after RNAi, and 52. 3% on protein level at 72h after RNAi (P<0. 01).CONCLUSION: It proves that the siRNA targeting the CTACGATGACTGTGTGTTT of IκBα gene is the valid sequence to suppress rat IκBα expression of ciliary muscles by RNAi in vivo.

Study on the integrated monitoring program regarding mouse and main mouse-borne disease in Zhejiang province / 中华流行病学杂志

Objective To study the integrated monitoring program regarding mouse and plague, hemorrhagic fever of renal syndrome(HFRS)and leptospirosis. Methods Integrated monitoring plan was used. A designated office coordinated 5 departments' actions within the Zhejiang Provincial Center for Disease Control and Prevention(CDC). Cage-trapping method was conducted to monitor the density of mice from June to October, respectively. Results Lishui municipal CDC had finished the integrated monitoring program on mouse and mouse-borne disease while the Longyou CDC had finished the field investigation, using the integrated monitoring program.Specimens were sent to provincial CDC. The integrated monitoring program needed more number of personnel and better coordination. Lishui reported 3 leptospirosis cases and 58 HFRS cases in 2009,with the incidence rates as 0.13 and 2.44 per 100 000, respectively. Longyou reported 2 leptospirosis case and 1 HFRS cases in 2009, with the incidence rates as 0.49 and 0.25 per 100 000, respectively.Lishui and Longyou had no plague case. Lishui caught 91 mice in 2009 and the density was 4.17%.Longyou caught 37 mice in 2009, with the density as 1.18 percent. Most mice caught from Lishui were Apodemus agrarius and the next was Mus musculus. In Longyou the Rattus tanezumi ranked the first, followed by Apodemus agrarius. The positive rate of HFRS antigen in Lishui and Longyou were 10.42% and 4.59% respectively. The positive rate of HFRS antibody in Longyou was 3.70%. The culture positive rate of leptospirosis in mouse renal of Lishui and Longyou were 0 and 0.98%respectively. The culture positive rate of leptospirosis in pig renal, duck renal, frog renal and cattle urine of Longyou was 0. The culture positive rate of leptospirosis in duck blood of Longyou was 80%.Conclusion The integrated monitoring program on mouse and mouse-borne disease seemed to be feasible and could promote the integrated surveillance and control program on mouse and mouse-borne diseases in China.

Early changes of retinal function in diabetic patients detected by multifocal electroretinogram / 国际眼科杂志(Guoji Yanke Zazhi)

AIM: To investigate the early changes of retinal function in diabetic patients detected by multifocal electroretinogram (mfERG).METHODS: The first-order kernel responses of mfERG were recorded from eyes of 33 normal control subjects,63 diabetic patients without retinopathy and 43 diabetic patients with background retinopathy. The response densities and implicit times of N1 and P1 were compared among the control, diabetic patients without retinopathy and diabetic patients with retinopathy.RESULTS: The response densities of N1 and P1 in central 3 rings were reduced significantly in diabetic eyes with and without retinopathy. And the implicit times of N1 and P1 were delayed significantly only in diabetic eyes with retinopathy.CONCLUSION: mfERG can detect the early changes of retinal function quantitatively in diabetic patients. Analysis of response densities and implicit times of N1 and P1 can reflect the progress of local retinal dysfunction in diabetes.