A method to assess library-holding journals according to their weighted citations was proposed in light of the actual needs of users for core journals, the use of library-holding journals and references by authors in different orders of precedence.The Western journal of rheumatology, highly cited by authors of Second Military Medical U-niversity, were assessed using this method, showing that this method is better than the citation analysis-based tra-ditional method in assessment of journals.

The information commons concept-based stereoscopic resources support system for academic library with brand-new connotations and its application were proposed according to the increasing development and expansion of informationization, networking and digitization in different social fields, the significant change in disseminating methods of information resources, and the need of readers for library service.

Platelet transfusion is one of the critical clinical therapies of neonatal thrombocytopenia and significant preventive measures of bleeding diseases in preterm infants.The platelet transfusion rate is high in clinical practice，whereas some controversies emerge in its clinical application.Platelet transfusion decision-making should take into account the platelet count and the causes of thrombocytopenia.In addition，the presence of bleeding tendency and platelet effects on other systemic disorders should be considered.Clinicians often need to make rapid decisions about whether to transfuse platelets in a critically situation.On the basis of the comprehensive overview of issues that are closely pertinent to the field of clinical practice，this article is dedicated to elucidate the advancements in clinical research pertaining to neonatal platelet transfusions，aiming to serve as a reference for clinicians when making transfusion decisions and to chart a course for future clinical investigations.

Objective: To investigate the effects of hydrogen on the lung damage of mice at early stage of severe burn. Methods: One hundred and sixty ICR mice were divided into sham injury, hydrogen, pure burn, and burn+ hydrogen groups according to the random number table, with 40 mice in each group. Mice in pure burn group and burn+ hydrogen group were inflicted with 40% total body surface area full-thickness scald (hereafter referred to as burn) on the back, while mice in sham injury group and hydrogen group were sham injured. Mice in hydrogen group and burn+ hydrogen group inhaled 2% hydrogen for 1 h at post injury hour (PIH) 1 and 6, respectively, while mice in sham injury group and pure burn group inhaled air for 1 h. At PIH 24, lung tissue of six mice in each group was harvested, and then pathological changes of lung tissue were observed by HE staining and the lung tissue injury pathological score was calculated. Inferior vena cava blood and lung tissue of other eight mice in each group were obtained, and then content of high mobility group box 1 (HMGB1) and interleukin-6 (IL-6) in serum and lung tissue was determined by enzyme-linked immunosorbent assay. Activity of superoxide dismutase (SOD) in serum and lung tissue was detected by spectrophotometry. After arterial blood of other six mice in each group was collected for detection of arterial partial pressure of oxygen (PaO₂), the wet and dry weight of lung tissue were weighted to calculate lung wet to dry weight ratio. The survival rates of the other twenty mice in each group during post injury days 7 were calculated. Data were processed with one-way analysis of variance, LSD test and log-rank test. Results: (1) At PIH 24, lung tissue of mice in sham injury group and hydrogen group showed no abnormality. Mice in pure burn group were with pulmonary interstitial edema, serious rupture of alveolar capillary wall, and infiltration of a large number of inflammatory cells. Mice in burn+ hydrogen group were with mild pulmonary interstitial edema, alveolar capillary congestion accompanied by slight rupture and bleeding, and the number of infiltration of inflammatory cells was smaller than that in pure burn group. The lung tissue injury pathological scores of mice in sham injury group, hydrogen group, pure burn group, and burn+ hydrogen group were (0.7±0.5), (0.8±0.5), (6.1±1.0), and (2.8±0.8) points, respectively. The lung tissue injury pathological score of mice in pure burn group was significantly higher than that in sham injury group (P<0.001). The lung tissue injury pathological score of mice in burn+ hydrogen group was significantly lower than that in pure burn group (P<0.001). (2) At PIH 24, the content of HMGB1 and IL-6 in serum and lung tissue of mice in hydrogen group was close to that in sham injury group (with P values above 0.05). The content of HMGB1 and IL-6 in serum and lung tissue of mice in pure burn group was significantly higher than that in sham injury group (with P values below 0.001). The content of HMGB1 and IL-6 in serum and lung tissue of mice in burn+ hydrogen group was significantly lower than that in pure burn group (with P values below 0.001). (3) At PIH 24, the activity of SOD in serum and lung tissue of mice in hydrogen group was close to that in sham injury group (with P values above 0.05). The activity of SOD in serum and lung tissue of mice in pure burn group was significantly lower than that in sham injury group (with P values below 0.001). The activity of SOD in serum and lung tissue of mice in burn+ hydrogen group was significantly higher than that in pure burn group (with P values below 0.001). (4) At PIH 24, there was no statistically significant difference in PaO₂ among the mice in four groups (F=0.04, P>0.05). (5) At PIH 24, the ratios of lung wet to dry weight of mice in sham injury, hydrogen, pure burn, and burn+ hydrogen groups were 3.52±0.22, 3.61±0.24, 7.24±0.32, and 5.21±0.41, respectively. The ratio of lung wet to dry weight of mice in pure burn group was significantly higher than that in sham injury group (P<0.001). The ratio of lung wet to dry weight of mice in burn+ hydrogen group was significantly lower than that in pure burn group (P<0.001). (6) The survival rates of mice in sham injury group and hydrogen group during post injury days 7 were 100%. Compared with those in sham injury group, survival rates of mice in pure burn group from post injury days 3 to 7 were significantly decreased (with P values below 0.05). Compared with those in pure burn group, survival rates of mice in burn+ hydrogen group from post injury days 5 to 7 were significantly increased (with P values below 0.05). Conclusions Hydrogen can significantly alleviate the infiltration of inflammatory cells and improve the pathological lesions of lung tissue of mice with severe burn. It has the effects of reducing inflammatory reaction and inhibiting oxidative stress, further showing the protective effect on the lung of burn mice.

Objective:To explore the underlying genetic cause in two patients with mucopolysaccharidosis(MPS)using the whole-exome sequencing.Methods:Genomic DNA was extracted from the peripheral blood of two patients with MPS and their family members. Sanger sequencing and pedigree verification were performed on the pathogenic variants filtered by whole-exome sequencing. The function of the mutation sites was analyzed by bioinformatics software. The effect of the splice mutation on mRNA was further determined by reverse transcription-PCR(RT-PCR).Results:The proband 1 was a 25-year-old male, who carried compound heterozygous mutations of α-L-iduronidas(IDUA) gene: p. T179R and p. S633L, and was diagnosed as MPSⅠ. His mother and sister carried heterozygous p. T179R, while his father carried heterozygous p. S633L, consistent with the autosomal recessive inheritance pattern. The proband 2 was a 3-year-old male, who was hemizygous for IVS 6-8A>G of iduronate-2-sulfatase(IDS) gene. His mother and grandmother were heterozygous for this mutation, consistent with the X-linked recessive inheritance. The proband 2 was diagnosed as MPSⅡ. Sequencing of RT-PCR products showed that the IVS 6-8A>G mutation activated an upstream cryptic splice-site in intron 6, leading to 7 nucleotide insertion in exon 7, frameshift, and shorter peptide chain.Conclusion:In this study, IDUA p. T179R and p. S633L, and IDS IVS 6-8A>G mutations were found in two patients with MPS by whole exome sequencing, which further expanded the genotypic and phenotype spectrum of MPS.

Objective:To demonstrate any role of iron metabolism in the inhibition by aerobic exercise of myocardial apoptosis in atherosclerotic mice.Methods:Eight-week-old male ApoE -/- gene knockout mice were randomly divided into a control group, a model group and an aerobic exercise group, each of 9. A model of atherosclerosis was induced in the rats of the model and aerobic exercise groups by feeding them a " western" diet for 12 weeks. During that time the aerobic exercise group only was given aerobic exercise training. The control group was fed normal rat chow during that period. Myocardial apoptosis was detected using TUNEL staining, and the expression and localization of ferritin heavy chain 1 (FTH1) and glutathione peroxidase 4 (GPX4) in the myocardium used immunohistochemistry. Western blotting was applied to detect the FTH1 and GPX4 protein levels, and iron deposition in the myocardium was detected using Prussian blue staining. Iron, lipid peroxide malondialdehyde (MDA) and glutathione peroxidase (GSH-PX) in the myocardial tissue were also measured. Results:The TUNEL staining showed significant apoptosis in the model group. In the aerobic exercise group it was significantly less. There was obvious iron deposition in the myocardia of the model group, which was significantly reduced in the aerobic exercise group. The average FTH1 and GPX4 levels in the model group were lower than in the control group, and significantly elevated in the aerobic exercise group.in the aerobic exercise group than in the model group. Iron and MDA levels in the aerobic exercise group were significantly lower, on average, than among the model group, while that of GSH-PX was significantly higher.Conclusions:Aerobic exercise can significantly inhibit cardiomyocyte apoptosis in atherosclerotic mice. The mechanism may be closely related to better iron metabolism, reduced oxidative stress and the inhibition of iron overload.

Ebola virus (EBOV) is an aggressive pathogen that causes a highly hemorrhagic fever syndrome in humans and other mammalian species.Early detection and proper treatment is the best defense against EBOV because of high mortality rate (70％-90％).Currently,there are eleven FDA approved Ebola tests,kits,or assays for emergency use,which can be divided into two main categories:rRT-PCR and viral antigen methods.In BSL 4 lab,rRT-PCR is the most sensitive technique to detect nucleic acid of Ebola virus,including Ebola Zaire (EZ1) rRT-PCR (TaqMan) Assay,Ebola Virus NP and VP40 Real-time RTPCR Assay,FilmArray NGDS BT-E and Biothreat-E test,RealStar Ebolavirus RT-PCR kit,LightMix Ebola Zaire rRT-PCR test,and Xpert Ebola Assay.Antigen-based technology (ReEBOV Antigen Rapid Test,and OraQuick Ebola Rapid Antigen Test) provides rapid Ebola antigen test without relying on special PCR equipment.How to develop,manufacture,and market point-of-care and field testing will be the next major challenge for EBOV on various samples.

Objective To explore the relationship between the increase of transmural dispersion of repolarization with ventricular arrhythmia,myocardial infarction degree and coronary events in elderly patients with myocardial infarction at T peak-T end interval in order to provide the guidance instruction for the assessment of prognosis of elderly myocardial infarction.Methods One hundred and twenty cases of senile myocardial infarction in the cardiology department of our hospital were selected,including 73 males and 47 females,the average age was (62.37 ± 11.34) years old.In addition,76 elderly cases of other heart disease were selected as the control group,including 42 males and 34 females,the average age was (59.56 ± 12.64) years old.The T peak-T end interval,dispersion and T peak-T end interval and dispersion after correcting the heart ratein different groups were analyzed.Results The T peak-T end interval,dispersion and T peak-T end interval and dispersion after correcting the heart rate had statistical differences between the control group and AMI group at admission and between the acute stage and recovery stage in the AMI group (P＜0.01);the T peak-T end interval and dispersion before and after correcting the heart rate had statistical differences among the patients with different ventricular arrhythmia (P＜0.01);the T peak-T end interval and dispersion before and after correcting the heart rate had statistical differences among the patients with anterior lateral wall,anterior wall,inferior wall,high lateral wall and multiple vessels infarction (P＜0.01);the case death after correcting the heart rate in different degrees and coronary event occurrence at admission had statistical difference (P＜0.01).Conclusion The T peak-T end interval has a close relation with malignant arrhythmia occurrence,which has an important predictive value for the short term prognosis in elderly patients with AMI.

Objective:To explore the long-term effect of endoscopic radiofrequency ablation for the treatment of unresectable ampullary carcinoma.Methods:Clinical data of patients with ampullary carcinoma who received endoscopic radiofrequency ablation in the Third Affiliated Hospital of Naval Medical University from January 2012 to May 2019 were retrospectively collected, including basic information, frequency of radiofrequency ablation, the type of biliary stent, postoperative complications, and follow-up. Kaplan-Meier method was used to analyze the survival of patients after endoscopic radiofrequency ablation. Relationship between frequency of radiofrequency ablation, type of biliary stent and overall survival time was analyzed.Results:A total of 50 patients were enrolled, including 31 males and 19 females, aged 73.0±9.7 years. Twenty-five patients (50.0%) underwent 1 radiofrequency ablation treatment, while 25 patients (50.0%) underwent radiofrequency ablation treatments more than twice. Postoperative complications occurred in 6 patients (12.0%), all of which were mild symptoms. The average follow-up was 22.3 months, with a total of 39 (78.0%) deaths, 5 (10.0%) lost to follow-up, and 6 (12.0%) surviving. The median overall survival time was 16.9 (95% CI: 9.1-24.8) months, with cumulative survival rates of 62.0%, 38.5%, 27.0%, and 12.6% at 1, 2, 3, and 5 years, respectively. The median overall survival time of those treated with radiofrequency ablation ≥2 times showed a trend of prolongation compared to patients treated once, but the difference was not statistically significant [26.7 (95% CI: 9.7-43.7) months VS 12.6 (95% CI: 4.9-20.3) months, χ2=3.049, P=0.081]. Plastic stents were used in 32 patients (64.0%) and metal stents in 18 patients (36.0%). There was no significant difference in median overall survival time between patients using metal and plastic stents [17.1 (95% CI: 6.1-28.0) months VS 15.9 (95% CI: 6.9-24.9) months， χ2=0.029， P=0.865]. Conclusion:Endoscopic radiofrequency ablation is a safe treatment for unresectable ampullary carcinoma, and multiple consecutive treatments may increase the survival benefit.

Objective:To construct an evaluation index system for the core competence of hospital specialist service operation assistants and provide reference for the evaluation of such competence.Methods:From January to March 2022, literature analysis and behavioral event interviews were used to initially establish a core competence evaluation index system of hospital specialist service operation assistants, based on the Donabedian model. Subsequently, the Delphi expert consultation method was applied to conduct correspondence consultation, inviting experts to evaluate the contents and importance of the index system, using analytic hierarchy process to determine the weights of the indexes at all levels.Results:Two rounds of expert consultation were carried out, and the valid recovery rate of the questionnaire was 100%. The familiarity coefficient of the second round of correspondence was 0.87, the basis of judgment coefficient was 0.90, and the authority coefficient was 0.89. The final evaluation index system for core competence of hospital specialist service operation assistant consisted of 3 first-level indexes, 13 second-level indexes and 81 third-level indexes. The weight of the first-level index structure index was 0.266, and the highest weight among the second-level indexes was the operational development ability (0.083), while the highest weight among the third-level indexes of operational development ability was the comprehensive coordination ability (0.193); The weight of the first-level index process index was 0.405, and the corresponding second-level and third-level indexes with the highest weight were department operation practice work (0.157) and reasonable resource allocation (0.303), respectively; The weight of the first-level index result index was 0.329, and the corresponding second-level and third-level indexes with the highest weight were the weight of medical quality and safety (0.103) and drug adverse reaction reporting rate (0.237), respectively.Conclusions:The evaluation index system constructed in this study proves scientific and reasonable in weight assignment, proving a reference for the management of the specialist service operation assistants.