Research progress on prevention of hand occupational contact dermatitis in nurses / 中国实用护理杂志

Occupational contact dermatitis is the most common occupational skin disease. It has a high incidence among healthcare workers, especially nurses. It has an impact on work and life. This paper reviews the research progress, risk factors, intervention measures, evaluation indicators of nurses′ hand occupational contact dermatitis, and provides references for the future researches.

Drug repurposing against coronavirus disease 2019 (COVID-19):A review / 药物分析学报

Since December 2019,severe acute respiratory syndrome coronavirus 2 has been found to be the culprit in the coronavirus disease 2019 (COVID-19),causing a global pandemic.Despite the existence of many vaccine programs,the number of confirmed cases and fatalities due to COVID-19 is still increasing.Furthermore,a number of variants have been reported.Because of the absence of approved anti-coronavirus drugs,the treatment and management of COVID-19 has become a global challenge.Under these circumstances,drug repurposing is an effective method to identify candidate drugs with a shorter cycle of clinical trials.Here,we summarize the current status of the application of drug repurposing in COVID-19,including drug repurposing based on virtual computer screening,network pharmacology,and bioactivity,which may be a beneficial COVID-19 treatment.

A Survey of Aesthetic Standards of the Ear.

BACKGROUND: The aesthetic standards of the ear are very important for evaluation of auricular surgery. Few studies have previously assessed ear aesthetics, especially in China. This study aimed to investigate aesthetic standards of the ear in a Chinese population. MATERIALS AND METHODS: A questionnaire was administered to Chinese individuals, which included assessment of the general impressions of the ear and other facial aesthetic units, the individual aesthetic subunits of the ear, the effects of different ear subunits on ear symmetry and the degree of the subunits to which the participants wanted to change. Answers were recorded on a five-point Likert-style scale. Statistical analysis was performed using SPSS ver. 17.0. RESULTS: A total of 319 responses were received, 50.3% women and 49.7% men. The external ear received the lowest degree of attention either on the front or on the lateral view of the face in both genders. Among the individual aesthetic units, the earlobe received the most attention and the fine structures the lowest. The helix had the greatest effect on the ear symmetry. The structure that participants most wanted to change was the earlobe in males and the helix in females. There were significant differences on the evaluation of the helix and crus of helix among the groups divided according to educational background (P < 0.001). CONCLUSION: The results showed that the structures that people were most concerned about were the helix and earlobe. There were gender differences in the results which were also influenced by education background.

Correlation between subclinical hypothyroidism and coronary artery stenosis in patients with coronary heart disease / 中华老年医学杂志

Objective:To investigate the correlation between subclinical hypothyroidism(SCH)and the degree of coronary artery stenosis in patients with coronary heart disease.Methods:From March 2018 to September 2019, 138 patients undergoing coronary angiography in our hospital were randomly selected and their serum thyroxine(FT4)and high-sensitivity thyroid stimulating hormone(sTSH)levels were measured.Based on the levels of FT4 and sTSH, patients were divided into the SCH group and the normal group.Combined with coronary angiography results, the correlation between the SCH and the number of coronary lesions were analyzed.Results:Patients in the SCH group were associated with significantly higher levels of cholesterol(TC)[(5.83±1.27)mmol/L vs.(5.02±1.22)mmol/L, t=3.746, P=0.000], triglyceride(TG)[(3.29±1.74)mmol/L vs.(2.17±1.68)mmol/L, t=3.769, P=0.000], low-density lipoprotein cholesterol(LDL-C)[(3.81±1.02)mmol/L vs.(3.24±1.08)mmol/L, t=3.092, P=0.001], and high-density lipoprotein cholesterol(HDL-C)[(1.13±0.27)mmol/L vs.(1.02±0.25)mmol/L, t=2.4459, P=0.008]than those in the normal group.There were significant differences in sTSH levels between patients with multivessel, double vessel or single vessel disease when grouped by the number of coronary lesions, and between those with severe, moderate or mild coronary artery stenosis when grouped by disease severity(all P<0.05). Multiple regression analysis showed that SCH, TC, and LDL-C were factors affecting the number of coronary lesions( P<0.05). Conclusions:SCH is an important factor that causes the occurrence and progression of coronary artery stenosis in patients with coronary heart disease, mainly by affecting lipid metabolism.

Protective effect of alprostadil injection on intestinal mucosal barrier function in patients with acute pancreatitis / 中华胰腺病杂志

Objective To observe the effects of alprostadil injection on intestinal mucosal barrier function in patients with acute pancreatitis(AP). Methods Seventy-eight AP patients admitted in Department of Medicine in Yuhang District Second People's Hospital of Hangzhou City from May 2016 to March 2017 were divided into 2 groups using random number method,including 38 cases in the control group and 40 cases in the treatment group. Patients in the control group received routine treatment. Patients in the treatment group were given intravenous 10 μg/d alprostadil injection in addition to routine treatment continuously for 14 days. Another 40 healthy volunteers who underwent routine examination in the same period were enrolled as healthy control group. The scores of MCTSI and APACHEⅡwere recorded at admission and 2 days after the treatment. The levels of serum DAO, endotoxin (ET) and IFABP were detected by ELISA. Results There were no significant difference on the scores of MCTSI and APACHEⅡ, the levels of serum DAO, ET, IFABP before treatment between control and treatment group(P>0.05), but were increased significantly than those in the healthy control group(P<0.01). After treatment,the scores of MCTSI and APACHEⅡ,the levels of serum DAO, ET, IFABP were decreased significantly than those before treatment in two groups(P<0.05 or P<0.01), but the scores of MCTSI and APACHEⅡ, the levels of serum DAO, ET and IFABP were decreased significantly than those in the control group(3.78 ± 0.43)vs (5.89 ± 0.13),(5.65 ± 1.77)vs (9.05 ± 1.61),(2.18 ± 0.16)U/ml vs (3.22 ± 0.15)U/ml,(0.15 ± 0.06)EU/ml vs (0.25 ± 0.09)EU/ml,(62.01 ± 12.82)ng/L vs (85.43 ± 16.79)ng/L; all P<0.05). There was a significant positive correlation between serum DAO, ET, IFABP and the scores of MCTSI (P<0.01). There was a significant positive correlation between serum DAO, ET, IFABP and the scores of APACHEⅡ, too (P<0.01). Conclusions Patient with acute pancreatitis have obvious intestinal mucosal barrier injury. Alprostadil injection can improve clinical symptoms and the scores of MCTSI to a certain extent by protecting intestinal mucosal barrier function.

Dynamical changes and significance of serum SOCS-3 in patients with acute pancreatitis / 中华胰腺病杂志

Objective To investigate the dynamical changes of serum SOCS-3 in patients with acute pancreatitis (AP) and discuss the potential clinical significance.Methods Seventy-five patients with AP admitted in Yuhang District Second People's Hospital of Hangzhou City from February 2015 to December 2016 were selected,who were divided into 2 groups according to disease severity:40 cases in mild AP (MAP) group and 35 cases in moderate and severe AP (MSAP + SAP) group.The levels of serum SOCS-3,IL-6 and TNF-α were determined by enzyme linked immunosorbent assay (ELISA) on the 1,3,5 and 7 day after admission.Thirty healthy people who were age and gender matched were included in the normal control group.Results The levels of serum SOCS-3,IL-6 and TNF-α in AP patients on the 1 day after admission were significantly increased than that in the control group (P ＜ 0.01 or P ＜ 0.05),which were gradually increased with the time,peaked on the 5 day and then started to decrease on 7 day after admission which was still higher than that on the 1 day after admission.The levels of serum SOCS-3,IL-6 and TNF-α in MSAP + SAP group were significantly higher than that in MAP group (P ＜0.01),and there were significant differences (F =112.80,P =0.001;F =170.21,P =0.000;F =112.82,P =0.000).Significant differences were also found among different time points between two groups (F =258.38,P =0.000;F =4.82,P =0.000;F =5.52,P =0.001).Additionally,the significantly positive correlations of SOCS-3 with IL-6 and TNF-α were found (r=0.785,r=0.828,both P＜0.01).Conclusions SOCS-3 may participate in early excessive inflammatory reactions in AP.Dynamic detection of SOCS-3 may be helpful for AP clinical classification and prognosis evaluation.

Methylprednisolone on severe bronchial asthma treatment and intervention effect observation / 中国生化药物杂志

Objective To investigate the effects of methylprednisolone on severe bronchial asthma treatment and intervention effect. Methods According to the different treatment methods will be January 2016 to March 2017 year in our hospital 90 cases of patients with severe bronchial asthma were selected,and randomly divided into observation group and control group,45 cases in each groups.The control group with conventional treatment method, the observation group used conventional methylprednisolone therapy; two the experimental results were recorded in detail, and the relevant data for comparative analysis, investigate the effects of methylprednisolone in treatment of severe bronchial asthma and intervention effect. Results The observation group (conventional methyl prednisolone) clinical treatment effect is better than that in control group (conventional) clinical efficacy, clinical symptoms disappeared. Time and so on were better than the control group, the adverse reaction rate were lower than the control group, there were significant differences between the groups (P<0.05) .Conclusion Severe bronchial asthma patients choose conventional methylprednisolone treatment significantly, in a short period of time can effectively improve the clinical symptoms and the adverse reaction is less, it is widely used in clinical treatment of severe bronchial asthma patients.

Design and application of new type of humidification fluid dropping joint for breathing machine / 医疗卫生装备

Objective To develop a humidification fluid dropping joint for the breathing machine to solve the problems in humidification fluid retension,pipeline leakage,pipeline fixation and etc.Methods A Infusion extension tube was involved in with 10 cm length left at the injector end.A hole was made at the side wall of the L-shaped joint of the breathing machine,whose internal diameter equaled to the external diameter of the extension tube.The extension tube was put into the joint through the hole,and the depth of imbedded tube was within 4 and 6 cm.Sealing and fixation at the connection between the tube and hole were executed with 502 glue and short tourniquet.Results The humidification fluid dropping joint could be connected with infusion apparatus of the pump or the infusion extension tube of the micro pump,which behaved well in eliminating accumulated humidification fluid,sputum suction,humidification and facilitating mechanical ventilation.Conclusion The joint developed gains advantages in easy manufacture,reducing complications and increasing the dependence on artificial airway,and thus is worthy promoting clinically.

Effects of ginkgo biloba tablets plus combined with routine therapy on HPA axis in patients with steroid-dependent asthma / 中国免疫学杂志

Objective:To investigate the effects of ginkgo biloba tablets plus relevant mechanism on HPA axis in patients with steroid-dependent asthma.Methods:80 patients with steroid-dependent asthma were divided into control group and experimental group at random,40 cases in every group.The control group were treated with pulmicort respules(1 mg/d) ,patients in the experiment group were given ginkgo biloba tablets in addition to routine treatment(120 mg/d).The therapeutic courses were both 12 weeks.The effective rate of reducing hormone,lung function,the plasma concentrations of ACTH and COR and the levels of PBMC GCR were deter mined before and after treatment.Results:The effective rate of reducing hormone was 89.47%in experimental group,which was 66.67%in control group.There were significant difference at the tows groups(P0.05).After treatment,the lung function, the levels of plasma concentrations of COR and the levels of PBMC GCR were increased significantly than control group( P<0.01,P<0.05),the levels of plasma concentrations of ACTH was decreased significantly than control group(P<0.01).There was a significant positive correlation between the value of FEV1/FVC and the plasma concentrations of COR,the levels of PBMC GCR( r=0.724,0.632, P<0.01).There was a significant negaitive correlation between the value of FEV1/FVC and the plasma concentrations of ACTH( r=-0.668,P<0.01).Conclusion:Ginkgo biloba tablets combined with routine treatment therapy can increase the effective rate of reducing hormone in patients with steroid-dependent asthma,which can improve the lung function maybe by regulate the HPA axis and upgrade the levels of GCR.

Cigarette smoking in different manners induces acute lung injury in rats / 浙江大学学报·医学版

To investigate the effects of cigarette smoking in different manners on acute lung injury in rats.The commercially available cigarettes with tar of 1,5, 11 mg were smoked in Canada depth smoking (health canada method, HCM) manner, and those with tar of 11 mg were also smoked in international standard (ISO) smoking manner. Rats were fixed and exposed to mainstream in a manner of nose-mouth exposure. After 28 days, the bronchoalveolar lavage fluids from left lung were collected for counting and classification of inflammatory cells and determination of pro-inflammatory cytokines IL-1β and TNF-α. The right lungs were subjected to histological examination and determination of myeloperoxidase (MPO) and superoxide dismutase (SOD) activities and glutathione, reactive oxygen species (ROS) and malondialdehyde (MDA) levels.In both HCM and ISO manners, the degree of lung injury was closely related to the tar content of cigarettes, and significant decrease in the body weight of rats was observed after smoking for one week. In a HCM manner, smoking with cigarette of 11 mg tar resulted in robust infiltration of macrophages, lymphocytes and neutrophils into lungs, significant increase in IL-1β and TNF-α levels and MPO activities, and significant decrease in GSH levels and SOD activities and increase in ROS and MDA levels (all<0.05). Smoking with cigarette of 5 mg tar led to moderate increase in IL-1β and TNF-α levels, and MPO activities (all<0.05), and moderate decrease in GSH levels and SOD activities and increase of ROS and MDA levels (all<0.05). However, smoking with cigarette of 1 mg tar affected neither inflammatory cell infiltration nor IL-1β and TNF-α levels.Cigarette smoking in nose-mouth exposure manner can induce acute lung injury in rats; and the degree of lung injury is closely related to the content of tar and other hazards in cigarettes.

Suitability study on techniques of cognitive behavioral therapy for obsessive-compulsive disorder / 中华行为医学与脑科学杂志

Objective To evaluate the suitability of cognitive behavioral therapy (CBT) techniques for obsessive-compulsive disorder (OCD),and analyze the domestic application status of CBT techniques for OCD and lay a foundation of standard CBT in China.Methods Delphi method was adopted to evaluate 30 CBT techniques on four dimensions,including operability,frequency,contribution of treatment and acceptability,and calculated the final scores of all techniques on different dimension and their comprehensive rank.Results After two rounds of experts consulting,Kendall coefficients of four dimensions were 0.249,0.269,0.234,0.250 (P＜0.01),coefficient of variation ranged from 0.05 to 0.31 of each technology on different dimension.The operability score of thought stopping,cost-benefit analysis and pie chart belonged to general suitability.The frequency and treatment contribution score of thought stopping and pie chart belonged to occasional use and small.The acceptation score of socratic question,thought stopping,in vivo exposure and behavior prevention belonged to partial acceptation.Weight coefficients of four dimensions were 0.26,0.18,0.27,0.29 and techniques ranking in the top three were information collection and evaluation,therapeutic alliance foundation and psychological education.Conclusion Most CBT techniques for OCD are suitable in China but some techniques still need to be improved.

Numerical simulation of the internal noise in the pressure generator of a continuous positive airway pressure ventilator / 生物医学工程学杂志

It is important to overcome the problem of noise for the research and development of ventilator technologies. Previous research of this subject showed that the pressure generator, produced by German EMB-PAPST Company and specially used for continuous positive airway pressure (CPAP) ventilator, created noise easily, due to local backflow in the volute, uneven velocity distribution in the impeller and local negative pressure in the inlet of the impeller. Based on the previous research, a combination of the computational fluid dynamics (CFD) software FLUENT and steady-state solution of noise source of Reynolds-Averaged Navier-Stokes (RANS) was used in this study. We combined equation of Lilley and Synthetic Turbulence to get the information about speed fluctuation of the pressure generator, which is used to finish noise prediction. After detailed analysis, it showed that noise source of different degrees spreaded around the inlet of the impeller and the volute, interface of blade edge and corner of the volute tongue, which influenced its overall performance to certain extent. Therefore, its structural design needs to be improved.

Isolation and purification of an anticancer activity peptide from protein hydrolysate of Mytilus coruscus / 中国药科大学学报

In this studies, an anticancer peptide was isolated from the enzymatic hydrolysate of Mytilus coruscus.CCK-8 assay was used as guide in activity screening through the isolation process of membrane filtration, DEAEsepharose chromatography, Sephadex G-25 exclusive chromatography and RP-HPLC. An anticancer peptide was obtained and identified as Asp-Leu-Tyr.

Assessing cytogenotoxicity of cigarette smoke condensates using three in vitro assays.

Cigarette smoke condensates (CSCs) are complex mixed compounds that contain both direct and indirect mutagens/carcinogens. To detect genotoxicity of CSCs in vitro, a combination of various enzymes (e.g. activation and detoxification enzymes) called S9 is usually added. However, as S9 may induce cytotoxicity in target cells, it is unclear whether the addition of S9 can impact CSC-induced toxicity. Here, differences in cytogenotoxicity between CSCs in the presence or absence of S9 were studied using three in vitro assays (neutral red uptake assay, comet assay, and TCR gene mutation test) in human peripheral lymphocytes, which were exposed to CSCs at doses of 25, 50, 75, 100 and 125 microg/ml for 4 h. Assay results showed that both CSCs + S9 or CSCs - S9 could induce a dose-dependent elevation of cytogenotoxic effects in human lymphocytes with some differences between the two groups. The cytogenotoxicity induced by CSCs - S9 was significantly higher than that induced by CSCs + S9 in all three assays. The comet and NRU assays revealed that a dose-response relationship of cytogenotoxicity induced by CSCs + S9 was less typical than that induced by CSCs - S9, possibly due to specific cytogenotoxic agents in CSCs and enzymes contained in the S9 mixture. Thus, the three in vitro assays used in the present study are suitable for detecting cytogenotoxic effects in human lymphocytes induced by CSCs. Furthermore, the cytogenotoxicity induced by both CSCs + S9 and CSCs - S9 should be measured simultaneously when assessing and comparing the biological activity of different CSCs.

Studying the impact of S9 on cyto-genotoxicity of cigarette smoke in human peripheral blood lymphocytes in vitro.

In present study, human lymphocytes were exposed to cigarette smoke condensates (CSCs) at the doses of 25, 50, 75, 100 and 125 µg ml(-1) with and without S9, and the cyto-genotoxic effects were detected with CCK-8, cell apoptosis and micronucleus assays. DNA repair kinetics was observed with comet assay. Our results indicated that the cell viability decreased with CSCs doses, the percentages of apoptosis cell and the frequencies of micronuclei increased with CSCs doses, and DNA damage of human lymphocytes induced by CSCs could be basically repaired within 240 min. However, the cytotoxicity induced by CSCs +S9 was significantly lower than that induced by CSCs -S9 in CCK-8 and cell apoptosis assays, and the DNA repair speed in +S9 group was quicker than that in -S9 group. In conclusion, S9 may affect not only the cyto-genotoxicity of CSCs but also the repair process of DNA damage induced by CSCs in lymphocytes.

Advances in the study of antitumor activities of the marine mollusks extracts / 中国药科大学学报

The extracts of marine mollusks( Abalone, Aplysia, Sepia, Arcagranosa linnaeus, Cyclina sinensis, Myti-lus coruscus, Chlamys farrei, Meretrix meretrix, Ostrea, Sinonovacula constricta and Solen gradis) classified as poly-saccharides, proteins and peptides, possess the antitumor, anti-aging, and anti-bacterial activities. Cancer patients undergoing long-term chemotherapy usually suffer from the damage to vital organs, and resistances affecting the outcomes of chemotherapy. Therefore, it is imperative to search for anti-cancer drugs with low toxicity and high efficiency. At present, several marine mollusks are being studied. Summary on the antitumor activities of the marine mollusks extrats is presented, which might provide a basis for the development of marine anti-cancer drugs.

Comparison of the release and percutaneous penetration in vitro between psoralen ointment and gel / 中成药

AIM: To compare the release and percutaneous penetration in vitro among 2 kinds of the psoralen ointments and its gel. METHODS: Dissolution tester and Franz diffusion cells were adopted as the release and percutaneous penetration in vitro, and HPLC was used to measure the amount of psoralen in the releasing solution, receiving solution and the skin. RESULTS: The release and percutaneous penetration of psoralen from the 3 kinds of preparation conformed to the zero kinetic equation. The steady-state penetration rate of psoralen in the gel was higher than that of the ointment, and there was no significant difference between 2 kinds of ointments. CONCLUSION: Gel is a better choice for percutaneous penetration of psoralen.