BACKGROUND: Simple drug therapy can not acquire satisfactory effects in treatment of fungal keretitis. At present, penetrating keratoplasy (PKP) has been considered a primary means to cure the fungal keratitis to save eyeball and vision.OBJECTIVE: To evaluate the clinical efficacy of PKP in the treatment of high-risk fungal keratitis.DESIGN, TIME AND SETTING: A retrospective case analysis was performed at the Department of Ophthalmology, Affiliated Hospital of Qingdao University Medical University between January 2000 and January 2007.PARTICIPANTS: A total of 51 patients (51 eyes) with high-risk fungal keratitis who underwent PKP in the Affiliated Hospital of Qingdao University Medical College were recruited into this study. Of these patients, 12 suffered from perfored, 35 from hypopyon, 8 from complicated cataract prior to surgery, and 5 from complicated glaucoma.METHODS: All patients received antifungal and antibacterial treatments prior to surgery and underwent PKP within 4 days following admission. After surgery, antifungal and antibacterial treatments were performed locally and systemically. All patients were followed-up for 6--24 months.MAIN OUTCOME MEASURES: Postoperative visual acuity, recurred fungal infection, rejection of implants, secondary glaucoma, and ulceration of implant.RESULTS: ① Of 51 patients, 18 were followed-up for 6-12 months, 2 for 13-18 months, and 8 for 19-24 months. ② A total of 49 (96.1%) out of 51 patients preserved the eyeballs and the visual acuity improved to different degrees in 48 (94.1%) patients. ③ After surgery, fungal infection recurred in 6 eyes (11.6%), 4 of which were controlled by antifungal medication and 2 was enucleated because of uncontrolled endophthalmitis. Graft rejection was found in 18 (35.3%) eyes, 13 of which recovered transparent by medication and 5 received secondary PKP. Graft ulceration was present in 4 (7.84%) eyes, 3 of which were cured and the remaining one was re-grafted because of severe endothelial cell loss. Secondary glaucoma appeared in 7(13.7%) eyes, and the intraocular pressure was controlled medically and surgically. Complicated cataract occurred in 6 (11.8%) eyes, 3 of which underwent cataract extraction. Most complications were successfully controlled. In the final follow-up period, 45 (88.2%) grafts were transparent.CONCLUSION: PKP is an effective approach to preservation of eyeballs and restoration of visual function in patients with high-risk fungal keratitis, which can not be treated by conservative therapy.

OBJECTIVE:To observe the effects of different concentration of human urinary kallikrein on blood pressure when used for acute cerebral infarction. METHODS: By a non-randomized historical control study,the blood pressure variation of 34 patients on day one after treatment with low concentration (0.06%) of human urinary kallikrein was observed,the occurrence of hypotension in this group was compared with that of another 47 patients (control) treated with high concentration (0.3%) of human urinary kallikrein. RESULTS: The reduction of blood pressure in low concentration group was less obvious than in the high-concentration group. However,hypotension was noted in both groups when angiotensin-converting enzyme inhibitor (ACEI) hypotensive drugs were used concomitantly. CONCLUSION: Human urinary kallikrein for acute cerebral infarction can transiently down-regulate blood pressure slightly,but its effect on blood pressure can be lowered by suitable reduction of its concentration;at any concentration,it can result in hypotension if used in combination with ACEI.

To investigate the application of seminar teaching on postgraduate education of ophthalmology,postgraduate from Grade 2008 to Grade 2010 were divided into experiment groups and control groups.Seminar teaching and conventional teaching were applied to two groups respectively.The performances of seminar teaching groups at each grade were better than the control groups ( P ＜ 0.05 ).Thus,seminar teaching can enhance theory and operation ability of postgraduate.

Objective To investigate the diognostic value of multi-sllce helical CT(MSCT) in spinal tuber-culosis, and making a further understanding of this disease. Methods The MSCT and post-processing films manifes-tations of 23 spinal tuberculosis proved by operation and pathology were reviewed retrospectively. Results MSCT could show the bone destructions location, range, relationships with neighbor tissues, osseous vertebral narrowing and para-vertebral abscess,etc. MPR, CPR, SSD and VR could more completely and stereoscopically show these character-istics of spinal tuberculosis. Conclusion MSCT post-processing techniques could make up for the lack of axial CT scan. It has high value in elevating the diagnosis accuracy of spinal tuberculosis.

Objective To construct subsystem of picture archiving and communicating system (PACS) based on video database of ophthalmology and to evaluate on effectiveness of applying PACS system in postgraduate teaching.Methods PACS subsystem were constructed by collecting audiovisual materials of ophthalmology surgery videos,retinal photography,B-ultrasonography,OCT,UBM of patients.A total of 24 postgraduates were divided into control group (n =12) and experimental group (n=12) by random number table.Students in control group was taught by traditional cases,books and literature while those in experimental by network teaching from PACS subsystem.Two teaching methods were assessed subjectively and objectively.Objective indicators including ophthalmology examination results,operational skill ratings and paper reviewing results as well as subjective indicators including efficiency to accept the knowledge,satisfaction degree of teaching,influencing degree of papers were employed to assess the effectiveness of the two teaching methods.Independent samples t-test and twosample rank sum test were used for statistical analysis,P ＜ 0.05 was considered statistically significant.Results Students in experimental group done better in operation scores and in the assessment of the efficiency of knowledge accepting,satisfaction of teaching and papers effect than control group(P =0.000、0.000、0.000、0.003).The two groups had no significant difference in professional exam achievements and paper review scores (P =0.625、0.354).Conclusions PACS subsystem based on video database of ophthalmology are benefit for postgraduate teaching.

Objective To observe the effect of small-interfering RNA(siRNA) targeting c-Met,the receptor of hepatocyte growth factor(HGF),on the proliferation of human lens epithelial cells(LECs).Methods siRNA was transferred into LECs cultured in vitro by HiperFect Transfection Reagent.Real-Time PCR was applied to observe the expression of c-Met mRNA in LECs after gene transfer,and MTT assay was used to detect the proliferation of LECs induced by HGF.Results The expression of c-Met mRNA in LECs was significantly decreased in the experimental group,compared to that in the controls(P<0.01).Proliferation of LECs induced by HGF was inhibited,compared with the single HGF stimulated group(P<0.01).Conclusion The RNA interference targeting c-Met can effectively inhibit the expression of c-Met mRNA,and the proliferation of LECs induced by HGF.

Objective:To investigate the relationship between transcription factors (TFs) and the prognosis of colon cancer, and to construct a prognosis model through TCGA and GEO dual databases, so as to quantify the risk of patients and guide clinical treatment decisions.Methods:The transcriptome and clinical data of colon cancer in TCGA and GEO databases were used in this study. The transcriptome data were annotated and the gene expression was calculated. The difference analysis of TFs in TCGA and GEO (log2FC > 1, P-value (Fdr) < 0.05) was performed. The difference TFs of double data intersection were used for correlation prognosis analysis ( P<0.01). The risk coefficient and risk value of prognosis-related TFs were calculated by COX multivariate analysis, and the prognosis model of TFs was constructed by COX model with "survival" and "glmnet" package. The survival curve ( P<0.001) and ROC curve (AUC>0.75) of the sequence set and verification set were drawn, and the distribution of risk value was visualized. After grouping according to risk value, GSEA enrichment analysis was calculated, gene set grid was constructed, target genes were predicted, and finally, pathway enrichment analysis of GO and KEGG was carried out. Results:387 TFs with different expressions in TCGA and GEO databases were used to draw heat map, volcanic map and TFs-related forest map, and the prognosis model of colon cancer was constructed according to COX multivariate analysis=0.310×HSF4+0.137×IRX3-0.127×ATOH1+0.290×OVOL3+0.137×HOXC6+0.155×SIX2+0.092×ZNF556-0.444×CXXC5+0.429×TIGD1+0.413×TCF7L1. Through enrichment analysis, our results showed that these prognostic factors may directly or indirectly act on cancer pathways, such as basic cell carcinoma and cancer signaling pathway, local tissue-cell adhesion, and extracellular matrix.Conclusions:The constructed TFs prognosis model of colon cancer can quantify the prognostic risk of colon cancer, and its high-risk group is an independent risk factor of colon cancer prognosis. This model is a new way to evaluate the prognosis of colon cancer.

Objective:To investigate the prognosis of pediatric arterial ischemic stroke(PAIS).Methods:We retrospectively analyzed the clinical data of patients aging from 1 month to 18 years old who were diagnosed with PAIS at the Emergency Department of Beijing Children′s Hospital from July 2015 to April 2020.We used the modified Rankin scale(MRS)to evaluate patients.We analyzed their recovery of neurological function, mortality rates, and the recurrence of PAIS, while statistically calculating the risk factors leading to disability and death caused by PAIS.Results:A total of 101 children with PAIS were involved.During the follow-up period, 32.7%(33/101)had no obvious neurological sequelae(MRS 0), and 24.8%(25/101)had mild symptoms that did not affect the patients′daily life(MRS 1). The proportion of mild disability(MRS 2)and moderate to severe disability(MRS 3-5)were 13.9%(14/101)and 9.9%(10/101), respectively.Notably, 18.8%(19/101)of the patients died during the follow-up period, and PAIS-related fatality rate was 7.9%.Of the 49 patients with MRS score of 1-5, 89.8%(44/49)had dyskinesia, 16.3%(8/49)had language disorder, 10.2%(5/49)had epilepsy, 10.2%(5/49)had intellectual impairment, and 4.1%(2/49)had memory impairment.Four children relapsed during the follow-up period.Infantile onset, cardiogenic stroke, consciousness disorder and multiple angiopathy may be the risk factors of severe disability and death of PAIS.Conclusion:PAIS has a certain probability of mortality and disability.Infantile onset, complicated with consciousness disorder, cardiogenic stroke and multiple angiopathy are risk factors for poor prognosis.

Humans ; Interleukin-16 ; immunology ; Multiple Myeloma ; immunology

Objective: To investigate the current status and real performance of the detection of RUNX1-RUNX1T1 fusion transcript levels and WT1 transcript levels in China through interlaboratory comparison. Methods: Peking University People’s Hospital (PKUPH) prepared the samples for comparison. That is, the fresh RUNX1-RUNX1T1 positive (+) bone morrow nucleated cells were serially diluted with RUNX1-RUNX1T1 negative (-) nucleated cells from different patients. Totally 23 sets with 14 different samples per set were prepared. TRIzol reagent was added in each tube and thoroughly mixed with cells for homogenization. Each laboratory simultaneously tested RUNX1-RUNX1T1 and WT1 transcript levels of one set of samples by real-time quantitative PCR method. All transcript levels were reported as the percentage of RUNX1-RUNX1T1 or WT1 transcript copies/ABL copies. Spearman correlation coefficient between the reported transcript levels of each participated laboratory and those of PKUPH was calculated. Results: ①RUNX1-RUNX1T1 comparison: 9 samples were (+) and 5 were (-) , the false negative and positive rates of the 20 participated laboratories were 0 (0/180) and 5% (5/100) , respectively. The reported transcript levels of all 9 positive samples were different among laboratories. The median reported transcript levels of 9 positive samples were from 0.060% to 176.7%, which covered 3.5-log. The ratios of each sample’s highest to the lowest reported transcript levels were from 5.5 to 12.3 (one result which obviously deviated from other laboratories’ results was not included) , 85% (17/20) of the laboratories had correlation coefficient ≥0.98. ②WT1 comparison: The median reported transcript levels of all 14 samples were from 0.17% to 67.6%, which covered 2.6-log. The ratios of each sample’s highest to the lowest reported transcript levels were from 5.3-13.7, 62% (13/21) of the laboratories had correlation coefficient ≥0.98. ③ The relative relationship of the reported RUNX1-RUNX1T1 transcript levels between the participants and PKUPH was not always consistent with that of WT1 transcript levels. Both RUNX1-RUNX1T1 and WT1 transcript levels from 2 and 7 laboratories were individually lower than and higher than those of PKUPH, whereas for the rest 11 laboratories, one transcript level was higher than and the other was lower than that of PKUPH. Conclusion The reported RUNX1-RUNX1T1 and WT1 transcript levels were different among laboratories for the same sample. Most of the participated laboratories reported highly consistent result with that of PKUPH. The relationship between laboratories of the different transcript levels may not be the same.