OBJECTIVE To investigate approaches to the prevention of sharps injuries. METHODS A retrospective questionnaire was performed for 193 nurses of a general hospital from the time of Jan 2004 to Jun 2005. RESULTS The questionnaires indicated that 46.1% nurses had suffered sharps injuries,with averaged of 1.6 times per person,of which 36.7% and 32.4% were caused respectively by syringe needles and glass wares.Opening ampules,disposal of used sharps,installing the syringe needles and transmitting sharp devices were the four major events in which sharps injuries might happen,accounted for 29.5%,22.3%,15.8% and 10.1%,respectively.It is also noted that 79.1% nurses suffering from the injury wore no gloves. CONCLUSIONS Occupational hazards of sharps injuries are threatening nurses.Certain prophylactic measures should be taken to control and prevent sharps injuries.

Objective To explore the effects of aberrant expression of DNA methyltransferase 1 (DNMT1) in cervical cancerization tissue and cervical cancer cells.Methods Cervical tissues were collected from 80 cases with a diagnosis of invasive cervix squamous cell carcinoma (SCC),53 cases with high-grade cervical intraepithelial neoplasia (CIN Ⅱ/Ⅲ),52 cases with low-grade cervical intraepithelial neoplasia (CIN Ⅰ)and 53 cases with normal cervix (NC).Meanwhile,Caski (HPV16-positive) and C33A (HPV-negative) cells selected from cervical cancer cell lines were cultured routinely in vitro.The expression of DNMT1 protein and mRNA were examined by Western blot analysis and real-time PCR (qRT-PCR) in the tissues and cells,respectively.Results The levels of DNMT1 protein were 1.33,1.84 and 2.28,and the Ct-ratios (DNMT1/β-actin) of DNMT1 mRNA were 1.27,1.27 and 1.26 in CIN Ⅰ,CIN Ⅱ/Ⅲand SCC group,respectively.Comparing with NC group,the expression of DNMT1 protein or mRNA was elevated in deficient cervical groups,with statistical significance (F =110.57,P ＜ 0.001,F =2.68,P =0.048).The expression levels of DNMT1 protein were increased steadily according to severity of the cervix lesions (x2tend =50.80,P ＜ 0.001),however,the expression of DNMT1 mRNA was not observed the same tendency (x2tend =3.63,P ＞ 0.05).The results from experiment in vitro showed that the levels of DNMT1 protein or mRNA were both higher in Caski cell than in C33A cell,especially for DNMT1 mRNA with significantly difference (t =7.134,P =0.002).Conclusion Aberrant expression of DNMT1 protein or mRNA could link with the risk of cervical cancerization by both transcriptional and posttranscriptional mechanisms.There would be a synergistic effect between overexpression of DNMT1 and HPV16 infection in the progression of cervix carcinogenesis.

Objective To explore self-emulsifying particle size characterization methods and compare the regularity of various methods. Methods By setting the clarity level of turbidity standard solution, with two less soluble drugs-diterpene lactone compounds Chuanhuning and dihydropyridine drug nifedipine as model drugs, 10-12 clarity level prescriptions were selected from six different ternary phase diagram. Laser particle size scanner was used to determine the particle size, and UV-visible spectrophotometry to determine its absorbance. Three methods of particle size characterization rules were compared by drawing charts. Results There was a positive correlationship among droplet particle size, absorbance and clarity grade of emulsion formed by prescription in the same phase diagram. But, there was no regularity among droplet particle size, absorbance and clarity grade of emulsion formed by prescription in different phase diagram. Conclusion The droplet particle size of emulsion formed by prescription containing the same drugs and excipients in different proportions can be compared by clarity with visual method or absorbance with UV-visible spectrophotometer.

Objective: To explore the relationship between handgrip strength (HGS) and pulmonary function (PF) in college students with sedentary lifestyle, so as to provide a reference for taking HGS as an essential factor of PF. Methods: In March 1-5, 2023, a total of 44 college students were recruited and were divided into the sedentary group (22) and exercise group (22) according to the International Physical Activity Questionaire (IPAQ), with 22 students in each group. Independent sample t-test was used to compare the indexes between groups, pearson correlation coefficient was used to determine the correlation between HGS and PF. Multiple linear regression analysis was used to determine the predictive model of PF. Results: There were statistical significance of the correlations between HGS and FVC, MEP, PEF, FEV1, FIVC, MIP, and PIF ( r=0.79, 0.47, 0.44, 0.60, 0.72, 0.53 , 0.49, P <0.01). When gender, physical activity, age, height, weight, and HGS were included as predictors in the regression model, height and HGS had significant effects on FVC ( R 2=0.75, F= 60.55 , P <0.01), weight and HGS had a good predictive effect on FIVC ( R 2=0.67, F=41.77, P <0.01). Conclusion HGS is significantly associated with PF in college students with sedentary lifestyle. Therefore, HGS can be used as an important indicator to predict the PF status of habitual sedentary college students.

Objective:To investigate the efficacy of autologous fat grafting in the treatment of stable linear scleroderma.Methods:A retrospective analysis was performed on 40 patients with stable linear scleroderma who received autologous fat grafting from October 2017 to November 2020 in the Department of Dermatology, Xijing Hospital, Air Force Medical University. There were 22 males and 18 females, aged 12 - 36 (18.2 ± 4.82) years. Skin lesions involved the forehead in 16 cases, the perioral area in 4, the lower jaw in 2, the cheek in 9, the trunk in 5, and the lower limb in 4, and the size of depressed skin defects was 3 - 24 cm 3. The patients′ subjective satisfaction rate, the decrease in the size of depressed skin defects, and the incidence of adverse reactions after autologous fat grafting were analyzed during the follow-up. Results:Six months after the grafting, 40 patients were followed up and evaluated, and the size of depressed skin defects markedly decreased. The satisfaction rate for appearance improvement after the first grafting was 60% (24/40) ; 35 patients received the second grafting, with a satisfaction rate of 88.6% (31/35) ; 17 received the third grafting, with a satisfaction rate of 94.1% (16/17) ; the total satisfaction rate was 87.5% (35/40). After the grafting, local skin unevenness was observed in the grafting area in 3 patients, and in the liposuction area in 2. The incidence rate of postoperative adverse reactions was 12.5% (5/40) .Conclusion:Autologous fat grafting was markedly effective in the treatment of stable linear scleroderma.