Objective To observe the distribution of aerobic bacteria in conjunctival sac of patients with proliferative diabetic retinopathy and the sensitive antimicrobial agents in order to master the distribution of bacteria in the conjunctival sac and select sensitive antibiotics to decrease the infection rate and improve the therapeutic effect. Methods From March 2013 to August 2016, 248 patients with proliferative diabetic retinopathy were treated with aerobic bacterial culture and antibiotic susceptibility test. The distribution characteristics of aerobic bacteria in conjunctival sac and the sensitivity of antibiotics were observed. Results There were 112 strains in this study, the positive rate was 45.16% (including 8 cases of mixed infection), including 104 strains of gram-positive bacteria, 92.86% of gram-negative bacteria and 7.14% of gram-negative bacteria, the difference was statistically significant differences (P<0.05). Among them, the positive rate of staphylococcus epidermidis higher than other types of strains, the difference were all significant differences (P all<0.05). The sensitivity of vancomycin to gram-positive bacteria 100% was higher than that of, ofloxacin 13.46%,ciprofloxacin 21.15%,gentamicin 69.23% and rifampicin 88.46%, (P all<0.05). The sensitivity of gentamicin to gram-negative bacteria 87.50% was higher than that of rifampicin 0 and vancomycin 12.50%, (P all<0.05). Positive rate of culture results and staphylococcal multidrug resistance rate were 72.94%,31.76%, the incidence of >65 years of age were higher than ≤ 65 years old 30.67%,12.27%, male 51.61%,23.12% than female 25.81%,6.45%, there are basic diseases 69.15%,31.91% were higher than those without underlying diseases30.54%,11.04%, (P<0.05). Staphylococcus number composition ratio, the difference was not statistically significant. Conclusion To strengthen the observation of aerobic bacteria and the sensitivity of commonly used antimicrobial agents in patients with proliferative diabetic retinopathy, especially the high risk population, it is helpful to master the distribution characteristics of bacterial conjunctival sac and sensitive antimicrobial agents, so as to achieve the preoperative conjunctival sac Bacteria and reduce the rate of infection and other purposes.

Objective To observe the action of Rhodiola Crenulate(RC) oral liquid reproduction function for the male rats. Methods 100 SD rats were randomly divided into 5 groups with equal gender number respectively. The male rats were given RC oral liquid (0, 2.48 g/kg, 7.48 g/kg, 24.80 g/kg) and Nanbao (2.00 g/kg)by oral twice a day for 48 d, respectively. Then the male rat was put into the same box in which the female rat whit two-side ovarys were excised for 15 d, respectively. The intercoursing ability,testosterone levels, and the weight of immune organs of the male rats were examined. 40 four-week-old rats were divided into 5 groups. Except for blank control, all rats's testis were excised. The castrated rats were treated with RC oral liquid (2.48 g/kg, 24.8 g/kg)and Methyltestosterone (2.00 mg/kg). The blank control group and model control group were given the same dose NS by oral twice a day for 28 d, respectively. The weight of accessory sex organs in castrated rats was observed. Results The level of testosterone and the organ coefficients of thymus and spleen in RC oral liquid groups were higher than blank control (P<0.05 or P<0.01).The weight of accessory sex organs of castrated rats in RC oral liquid groups were heavier than model control (P<0.05). Conclusion RC oral liquid can improve the reproduction function in male rats.

Background The anti-proliferative effect of matrine has been demonstrated and its relevance to prevention and treatment of proliferative retinovitreopathy is concerned.Howeverthe intravitreous injection of free-matrine reiteratively may raise the risk of ocular infection.ObjectiveThe goal of the present study is to investigate the sustained releasing ability and safety of matrine polyactic acid microsphere(MAT-PLA-MSintravitreal injection.MethodsMAT-PLA-MS was prepared by Hebei Medical University and examined under the transmission electron microscope.The release of MAT-PLA-MS was monitored by ultraviolet spectrophotometry.Free-matrine with the dose of 1,2,4mg was intravitreally injected respectively in 12 eyes of New Zealand albino rabbits in free-matrine group and MAT-PLA-MS with matrine(2,4,6mg respectively was administered in 16 eyes separately in matrine microsphere group.The blank microsphere was injected in 6 right eyes as blank control group and normal saline solution was injected in 6 fellow eyes as control group.The retinal function change was evaluated by electroretinogram(ERG),and the morphological and histological change of retina following drug injection were assessed under the slit lamp biomicroscope,indirect ophthalmoscope,light microscope and transmission electron microscope.The decomposed process of MAT-PLA-MS in vitreous was recorded with ocular anterior segment and fundus color camera.Results MAT-PLA-MS containing matrine showed the spherical shape with the mean diameter of 2.28±47μm under the transmission electron microscope and the drug-loading rate 6.17% and drug-release rate 87.93% in vitro for 672 hours,presenting the controllable release characteristics.After implantation into the vitreous,the MAT-PLA-MS containing matrine decomposed gradually with the prolong of time.The b amplitudes of ERG maximum response were significantly declined in 4mg free-matrine injection group in comparison with before injection in various time points(P<0.01).However,no considerably differences were found in MAT-PLA-MS with matrine groups and control groups in various time points following the intravitreal injection(P>0.05).No obvious abnormal was seen under the slim lamp and ophthalmoscope through the study period.The changes of retinal ultrastructure were found from 1 through 28 days after injection of 4mg free-matrine,and slight retinal structural damage was seen from 7 through 28 days after injection of 6mg MAT-PLA-MS containing matrine.ConclusionThese results suggest that MAT-PLA-MS possesses good sustained release feature.MAT-PLA-MS containing matrine has less toxicity to retina than free-matrine after intravitreal injection.MAT-PLA-MS is an excellent drug delivery system.

Objective To analyze the effect of residual cholesterol (RC) on hearing loss in noise-exposed workers. Methods A total of 3 412 workers engaged in noise operation work in an underground railway enterprise were selected as the research subjects using the judgment sampling method. Their occupational health examination data were collected to analyze the relationship between RC and hearing loss. Results The noise intensity of workplace in the underground rail enterprise was 80.0-85.0 (81.4±3.2) dB(A). The detection rate of hearing loss was 20.2% (691/3 412). The rates of abnormal total cholesterol, triacylglycerol, high density lipoprotein cholesterol (HDL-C) and low density lipoprotein cholesterol were 35.6%, 25.7%, 9.5% and 42.4%, respectively. The median and the 25th and 75th percentiles [M(P₂₅,P₇₅)] of RC level were 0.24 (0.15, 0.37) mmol/L. The levels of total cholesterol, triacylglycerol and RC of workers in hearing loss group were higher than those in normal hearing group [M(P₂₅,P₇₅): 4.91(4.37, 5.58) vs 4.84(4.30, 5.46) mmol/L, 1.29(0.91, 1.93) vs 1.16(0.82, 1.67) mmol/L, 0.26(0.16, 0.41) vs 0.24(0.14, 0.37) mmol/L, all P<0.05]. The detection rate of hearing loss in abnormal triglyceride group was higher than that in normal triglyceride group (24.8% vs 18.7%, P<0.01), and the detection rate of hearing loss in abnormal HDL-C group was higher than that in normal HDL-C group (25.0% vs 19.8%, P<0.05). The higher the serum RC level, the higher the detection rate of hearing loss (P<0.01). Multivariate logistic regression result showed that individual with older age, longer work time and higher serum RC level had higher risk of hearing abnormality (all P<0.05), and the risk of hearing abnormality was higher in patients with abnormal fasting blood glucose than patients with normal faseing blood glucose (P<0.05) after controlling for confounding factors such as gender, alcohol consumption, body mass index, and elevated blood pressure. However, abnormal triacylglycerol and HDL-C levels were not significantly related to the risk of hearing abnormality (both P>0.05). Conclusion Serum RC levels are an independent risk factor for hearing loss among noise-exposed workers exposed to noise level of 80.0-85.0 dB(A) in the workplace.

OBJECTIVE: To establish a newborn screening system for Duchenne muscular dystrophy (DMD) through assessment of MM isoenzyme of creatine kinase (CK-MM) activity. METHODS: The CK-MM level was detected using dry blood spot filter paper from 10 252 male newborns. The results were grouped based on their gestational age, sampling time and intervals between the experiments. The threshold value for CK-MM necessitating genetic testing was determined. Next-generation sequencing (NGS) was carried out for those with a CK-MM value over the threshold, and the result was verified by multiplex ligation-dependent probe amplification (MLPA). RESULTS: Based on the result of non-parametric rank sum test, the median CK-MM concentration has increased with the gestational age, and was inversely correlated with the age of the newborns among unaffected specimens. CK-MM on dry blood spot filter paper can be stable for 14 days at 2-8℃. Statistical analysis of CK-MM value of the 10 252 neonates suggested that the threshold may be set as 700 ng/mL. Exonic deletions were found in 2 confirmed cases, whose CK-MM level was greater than 2000 ng/mL. CONCLUSION Detection of CK-MM in dry blood spot filter paper has provided an effective method for newborn screening of DMD. This simple and inexpensive method can be used for large-scale screening, which is of great value to the early intervention and treatment of the disease.
Dystrophin/genetics* ; Exons ; Humans ; Infant, Newborn ; Male ; Multiplex Polymerase Chain Reaction ; Muscular Dystrophy, Duchenne/genetics* ; Neonatal Screening

OBJECTIVE: To explore the status and its influencing factors of anxiety symptoms in patients with occupational noise-induced deafness(ONID). METHODS: A total of 220 ONID patients were selected as the ONID group,and 200 healthy participants without noise exposure were selected as the control group by judge sampling method.The two groups were investigated by the Self-Rating Anxiety Scale, Self-Rating Depression Scale and Pittsburgh Sleep Quality Index. The Tinnitus Handicap Inventory was used to evaluate the disability levels of tinnitus, and pure-tone audiometry was used to assess the degree of tinnitus and hearing impairment in the ONID group. RESULTS: The incidence of anxiety, depression, and sleep disorder were higher in the ONID group than that in the control group(52.7% vs 9.0%, 55.0% vs 15.0%, 52.3% vs 7.0%, P<0.05). In ONID with anxiety subgroup, the duration of disease was longer(1.0 vs 2.0 years, P<0.01), incidences of tinnitus, depression and sleep disorder were higher than those in ONID without anxiety subgroup(92.3% vs 100.0%, 18.3% vs 87.9%, 19.2% vs 81.9%, P<0.01). The result of multivariate logistic regression analysis showed that the longer the duration of disease and the more severe of the tinnitus, the higher the risk of anxiety symptoms in patients with ONID [the odds ratio(OR) and its 95% confidence interval(CI) were 1.35(1.10-1.65) and 2.94(1.56-5.54) respectively, P<0.01]. The risk of anxiety in patients with sleep disorders was higher than those without sleep disorders [OR(95%CI) was 12.78(5.90-27.64), P<0.01]. CONCLUSION: The ONID patients are more likely to have anxiety. The duration of disease, severity of tinnitus and sleep disorders are the risk factors causing anxiety in ONID patients.