Diagnostic value of 18F-PSMA-1007 PET/CT in seminal vesicle invasion of prostate cancer / 中华核医学与分子影像杂志

Objective:To evaluate the diagnostic value of the 18F-prostate specific membrane antigen (PSMA)-1007 PET/CT in seminal vesicle invasion (SVI) of prostate cancer. Methods:Clinical and pathological materials of 88 patients (age: 51-84 years) who underwent radical prostatectomy (RP) between May 2019 and December 2021 in the First Affiliated Hospital of Xi′an Jiaotong University were analyzed retrospectively. All patients underwent 18F-PSMA-1007 PET/CT examination for primary staging before surgery. The diagnostic efficiency of 18F-PSMA-1007 PET/CT in SVI was obtained using postoperative pathological results as the " gold standard" and ROC curve was drawn. Furthermore, univariate and multivariate logistic regression analyses were used to screen the influencing factors for 18F-PSMA-1007 PET/CT prediction of SVI. Results:The accuracy, sensitivity, specificity, positive predictive value and negative predictive value of 18F-PSMA-1007 PET/CT in diagnosing SVI were 79.55%(70/88), 72.73%(16/22), 81.82%(54/66), 57.14%(16/28) and 90.00%(54/60), respectively. The ROC AUC was 0.77. Results of univariate logistic regression showed that total prostate specific antigen (tPSA), primary SUV max, Gleason score, International Society of Urological Pathology (ISUP) grade group were associated with 18F-PSMA-1007 PET/CT prediction of SVI. Results of multivariate logistic regression showed that Gleason score (odds ratio ( OR)=2.04, 95% CI: 1.19-3.50, P=0.009) was a predictor of SVI in prostate cancer. Conclusion:18F-PSMA-1007 PET/CT has certain diagnostic value in SVI of prostate cancer, and combining with Gleason score can improve the diagnostic efficiency.

Biological characteristics of Escherichia coli phage and Staphylococcus aureus phage isolated from sewage / 西安交通大学学报(医学版)

【Objective】 Escherichia coli phage (ECP) and Staphylococcus aureus phage (SAP) isolated from sewage were used as research objects, and their biological characteristics were analyzed to provide new experimental materials for the application of phages. 【Methods】 ECP and SAP were purified and cultured by double-layer agar method. Then a series of biological characteristics of these two phages were preliminarily analyzed by electron microscope observation, optimal multiplicity of infection (MOI) test, one-step growth curve test, temperature, pH, chloroform and ultraviolet sensitivity tests, respectively. 【Results】 The results of biological characteristics showed that ECP and SAP were both virulent phages, belonging to myoviridac family. Their optimal MOI was 10-1, and they had strong resistance to ultraviolet light. The cleavage volume of ECP was 76.3 PFU/cell, while that of SAP was 8.3 PFU/cell. ECP had a wide range of temperature tolerance and could stably survive at 30-50 ℃, while SAP was more sensitive to temperature and could be completely inactivated at 50 ℃ for 1 h. ECP could maintain a good lysis activity in the range of pH 5-11, while SAP in the range of pH 6-9. ECP had strong resistance to chloroform and was non-membranous phage, while SAP was more sensitive to chloroform and was a membranous phage. 【Conclusion】 ECP and SAP are both virulent phages and have strong resistance to ultraviolet light. The lysability, temperature, pH, and chloroform tolerance of ECP are stronger than those of SAP.

Analysis of drug resistance and risk factors of multi drug resistant bacteria in bloodstream infection / 中国热带医学

@#Abstract: Objective To analyze the antimicrobial resistance rate and risk factors of multi drug resistant organisms (MDRO) in bloodstream infection for rational treatment. Methods　A total of 696 cases of bloodstream infections of Staphylococcus aureus, Enterococcus, Enterobacteriaceae (excluding Salmonella and Shigella), Pseudomonas aeruginosa and Acinetobacter in our hospital from 2017 to 2021 were selected, and 711 pathogenic strains were isolated from their whole blood samples. The antimicrobial resistance rates of various multi drug resistant strains were analyzed and the risk factors of MDRO infection were analyzed. Results　696 non repeated cases were screened out from 13 187 whole blood culture specimens, with a positive rate of 5.3%, and a total of 711 blood influenza pathogens were detected, among them, 350 strains of MDRO were detected with a detection rate of 49.23% (350/711). Among the pathogenic bacteria of bloodstream infection, Escherichia coli was the most, with 277 strains accounting for 38.96% (277/711), of which 201 strains were MDRO, accounting for 57.43% (201/350); followed by Klebsiella pneumoniae and Staphylococcus aureus, with 155 strains accounting for 21.80% (155/711) and 89 strains accounting for 12.52% (89/711), among which 43 strains of Klebsiella pneumoniae MDRO accounted for 12.29% (43/350) and 38 strains of Staphylococcus aureus MDRO accounted for 10.86% (38/350). The change trend of the three pathogens during 2017-2021 was not obvious. The drug sensitivity test showed that Escherichia coli and Klebsiella pneumoniae were highly resistant to cephalosporins and fluoroquinolones, and the drug resistance rate of aminoglycosides was relatively low. They had almost no resistance to cephalosporins and carbapenems. Staphylococcus aureus has a high resistance rate to lincomycin and macrolides, but no resistance to oxazolidinone, glycopeptides and glycylcyclins. There were 350 cases of MDRO infection and 361 cases of non MDRO infection. Univariate analysis showed that the age, sex, cardiovascular and cerebrovascular history, renal insufficiency, lung disease, hypoalbuminemia, hepatobiliary disease, electrolyte disorder and anemia of the patients had no statistical significance in MDRO infection (P>0.05); diabetes, urinary tract infection, surgical operation and burn were the influencing factors of MDRO (P<0.05). According to logistic analysis, diabetes, urinary tract infection, surgical operation and burn were the risk factors of MDRO infection (P<0.05). Conclusion　The infection of MDRO in patients with bloodstream infection is serious, and early prevention and control should be paid attention to, and the principle of graded use of antibiotics should be strictly observed, and the rational application should be carried out to actively and effectively control the production of MDRO.

Personal audio device use and hearing impairment among high school students in Beijing / 中国学校卫生

Objective@#To explore the use of personal audio devices and hearing impairment among high school students, so as to provide reference for the development of adolescent hearing health work.@*Methods@#The simple random sampling method was used to collect research data relating to 1 768 high school students. The situation of personal audio players, headphone and hearing damage were investigated by using a self designed questionnaire, so as to identify the related factors of hearing impairment which were analyzed statistically by multivariate Logistic regression.@*Results@#The use rate of PAP and earphones was 98.64% and 94.12 %, respectively, and the use rate of female students(99.68%, 96.42%) was higher than that of male students(97.43%, 91.43 %)( χ 2=16.69, 19.79, P <0.01). Hearing impairment accounted for 13.35%. The Logistic regression analysis showed that PAP service years ( OR =1.59, P <0.05) were related to hearing impairment. Gender ( OR =0.60), in ear earphones ( OR =1.38), earplug earphones ( OR =1.37), and quiet use >1 h ( OR =1.50) were independently influenced with symptoms of hearing impairment during/after earphone use( P <0.05).@*Conclusion@#High usage rates of personal audio equipment among high school students lead to hearing impairment and related symptoms. Non essential use should be reduced.

Validity of the brazilian-portuguese version of moorehead-ardelt quality of life questionnaire ii among patients with severe obesity / Validade da versão em português-brasileiro do questionário moorehead-ardelt quality of life-ii em pacientes com obesidade grave

ABSTRACT BACKGROUND: Patients with obesity present multiple comorbid psychiatric conditions and experience impairments in health-related quality of life. Reliable and valid tools that evaluate health-related quality of life are essential for clinical practice. AIMS: This study aimed to investigate the reliability and validity of the six-item Moorehead-Ardelt Quality of Life Questionnaire II among Brazilian patients with severe obesity. METHODS: We assessed 387 patients (mean age 43 years, 78.8% women, mean body mass index of 46.5 kg/m²) on the waiting list of a bariatric surgery center. Trained research assistants concurrently applied the Moorehead-Ardelt Quality of Life-II, the Montgomery-Åsberg Depression Rating Scale, and the Global Assessment of Functioning for assessing health-related quality of life, comorbid depressive symptoms, and patient functioning level, respectively. RESULTS: The internal consistency of the Moorehead-Ardelt Quality of Life-II was considered acceptable. The total score was correlated with the severity of depressive symptoms and functioning level. The more body mass index increases, the more health-related quality of life worsens. The Moorehead-Ardelt Quality of Life-II presented a unidimensional structure. CONCLUSIONS: The unidimensional Moorehead-Ardelt Quality of Life-II is a reliable and valid measure for evaluating health-related quality of life in Brazilian patients with severe obesity. The questionnaire allows to quickly assess the health-related quality of life of patients in different bariatric contexts, considering depression and functional level.

RESUMO RACIONAL: Pacientes com obesidade apresentam múltiplas condições psiquiátricas comórbidas e experienciam prejuízos na qualidade de vida relacionada à saúde. Ferramentas confiáveis e válidas que avaliam a qualidade de vida relacionada à saúde são essenciais para a prática clínica. OBJETIVOS: Este estudo teve como objetivo investigar a confiabilidade e validade do Moorehead-Ardelt Quality of Life-II de seis itens entre pacientes com obesidade grave. MÉTODOS: Foram avaliados 387 pacientes (idade média de 43 anos, 78,8% mulheres, índice de massa corporal (IMC) médio de 46,5 kg/m², na lista de espera de um centro cirurgia bariátrica. Assistentes de pesquisa treinados aplicaram simultaneamente o Moorehead-Ardelt Quality of Life-II, a Escala de Depressão de Montgomery-Åsberg e a Avaliação Global do Funcionamento para avaliar, respectivamente, a qualidade de vida relacionada à saúde, os sintomas depressivos comórbidos e o nível funcional do paciente. RESULTADOS: A consistência interna do Moorehead-Ardelt Quality of Life-II foi considerada aceitável. A pontuação total do Moorehead-Ardelt Quality of Life-II foi correlacionada com a gravidade dos sintomas depressivos e nível funcional. Quanto maior o IMC, menor a qualidade de vida relacionada à saúde. O Moorehead-Ardelt Quality of Life-II apresentou uma estrutura unidimensional. CONCLUSÕES: O questionário Moorehead-Ardelt Quality of Life-II unidimensional é confiável e válido na avaliação da qualidade de vida relacionada à saúde em pacientes brasileiros com obesidade grave. O questionário permite avaliar rapidamente a qualidade de vida relacionada à saúde dos pacientes em diferentes contextos, considerando depressão e nível funcional.

The value of PCPT-RC high risk probability combined with Gleason score for predicting the risk of metastasis in newly diagnosed prostate cancer / 西安交通大学学报(医学版)

【Objective】 To investigate the value of prostate cancer prevention trial risk calculator （PCPT-RC） combined with biopsy Gleason score for predicting the risk of metastasis in newly diagnosed prostate cancer patients. 【Methods】 We retrospectively collected the data of 74 patients with newly diagnosed prostate cancer confirmed by biopsy from April 2019 to August 2021， concurrent with 18F-PSMA-1007 PET/CT whole body imaging in the same period. Based on this， a binary logistic regression model was established to obtain the high risk probability of PCPT. We calculated the receiver operating characteristic curve （ROC） was drawn and the area under the curve， Yuden index， sensitivity， specificity， positive predictive value and negative predictive value. We compared the predictive value of the prostate cancer prevention trial risk calculator and Gleason score alone or in combination in predicting the risk of prostate cancer metastasis. 【Results】 Based on the PSMA PET/CT results， 74 patients were divided into non-metastatic group （46/74） and metastatic group （28/74）. PCPT high risk probability ［41.14% （16%-67%）］ vs. ［30.89% （5%-65%）］， Gleason score ［8.5（6-10） score］ vs. ［7.7（6-9） score］， tPSA ［26.24（5.70-42.32） ng/mL］ vs. ［19.58（2.47-49.35） ng/mL］， and fPSA ［3.94（0.82-12.00） ng/mL］ vs. ［2.33（0.35-10.20） ng/mL］ were significantly higher in metastatic group than in non-metastatic group. Binary Logistic regression analysis showed that Gleason score and PCPT low risk probability may be independent predictors of prostate cancer metastasis. PCPT low risk probability alone did not predict the risk of prostate cancer metastasis （P=0.172）. The predictive accuracy of Gleason score and high probability of PCPT in predicting prostate cancer metastasis were 0.715 and 0.679， respectively， and the accuracy of the combined prediction was 0.809. 【Conclusion】 PCPT-RC combined with Gleason score is valuable for predicting the metastasis risk of newly diagnosed prostate cancer patients， which has certain guiding significance for clinical individualized treatment.

Mental health status of middle school students from single parent families in urban area of Lishui City / 中国学校卫生

Objective@#To investigate mental health status and associated factors among middle school students from single parent families in urban Lishui, and to provide reference for mental health education for adolescents from single parent families.@*Methods@#In the urban area of Lishui City, a total of 160 middle school students from single parent families in four middle schools were selected by stratified random sampling, among 160 middle school students from two parent families were selected matched for class, gender, age and family background, and Mental Health Diagnostic Test Scale (MHT) was used for testing.@*Results@#In terms of allergy tendency, physical symptoms, phobic tendency and total anxiety detection, middle school students from single parent families were higher than those from two parent families, and the differences were statistically significant ( χ 2=5.70, 5.34, 6.84, 4.30, P <0.05). Among the 160 middle school students from single parent families, the detection rate of girls in learning anxiety, anxiety towards others, self blame tendency, allergic tendency, physical symptoms, terror tendency, impulsive tendency and total anxiety were higher than that of boys, and the differences were statistically significant. ( χ 2=12.26, 4.61, 7.34, 14.96, 20.53, 10.05, 16.19 , 9.39, P <0.05). Multivariate Logistic regression analysis showed that gender was positively associated with mental health of middle school students in singleparent families ( OR=4.25, 95%CI=1.87-7.02, P <0.05).@*Conclusion@#There are a higher prevalence of psychological problems among middle school students from single parent families in Lishui city, especially among girls, which warrents further psychosocial services including mental health education.

Effect of one-time high load exercise on skeletal muscle injury in rats of different genders: oxidative stress and mitochondrial responses

Purpose: To evaluate the impact of one-time high load exercise on skeletal muscle injury and analysis its mechanism in different genders. Methods: Twenty-four male and 24 female rats were divided randomly into four groups respectively: control, 0 h, 6 h, and 24 h after exercise. The activities of creatine kinase (CK), lactate dehydrogenase (LDH), and myohemoglobin (MYO) in serum, the expression level of oxidative stress markers, mitochondrial respiratory chain complex enzyme, and the apoptosis related protein in quadriceps were detected. Results: The results showed that the activities of CK, LDH and MYO in serum increased immediately after exercise and restored faster in female rats. More obvious structural disorder and apoptosis in male rats were showed. Malondialdehyde (MDA) and superoxide dismutase (SOD) were increased while catalase (CAT) and glutathione (GSH) were decreased in male rats. SOD, CAT and GSH were increased in female rats. Mitochondrial complex enzyme activity was decreased in males and increased in females. Conclusions: The skeletal muscle injury in both genders of rat could be induced by one-time high load exercise due to the mitochondrial respiratory enzyme dysfunction and oxidative stress, which was relatively mild and recovered quicker in female rats.

Cardiovascular risk factors and major depressive disorder: a cross-sectional study in São Paulo, Brazil

ABSTRACT BACKGROUND: Cardiovascular risk factors can mediate the association between depression and cardiovascular diseases. OBJECTIVE: To evaluate cardiovascular risk factors in adult individuals with and without histories of major depression in the metropolitan region of São Paulo, Brazil. DESIGN AND SETTING: Cross-sectional study in São Paulo (SP), Brazil. METHODS: This study evaluated 423 individuals without any lifetime diagnosis of major depression and 203 individuals with a previous diagnosis of major depression (n = 626). The participants underwent a psychiatric evaluation using a structured clinical interview (SCID-1), an anthropometric evaluation and a clinical evaluation that included blood pressure measurement and assessment of fasting blood glucose, lipid profile and physical activity levels. RESULTS: Individuals with histories of major depression were more likely to be female (P < 0.0001). Individuals with lifetime diagnoses of major depression were more likely to be current smokers (odds ratio, OR 1.61; 95% confidence interval, CI 1.01-2.59) and to have diabetes (OR 1.79; 95% CI 1.01-3.21); and less likely to be obese (OR 0.58; 95% CI 0.35-0.94). CONCLUSION: Individuals with major depression had higher odds of presenting tobacco smoking and diabetes, and lower odds of being obese. Healthcare professionals need to be aware of this, so as to increase the rates of diagnosis and treatment in this population.

A Estratégia Saúde da Família como indicador para o enfrentamento da COVID-19 em Santa Catarina, Brasil / The Family Health Strategy as an indicator for coping with COVID-19 in Santa Catarina, Brazil

Objetivo: analisar relação entre a cobertura pela Estratégia de Saúde da Família e a disponibilidade de respiradores com a taxa de contágio e mortalidade da COVID-19 no Estado de Santa Catarina, Brasil. Materiais e métodos: trata-se de um estudo ecológico, que utiliza modelos computacionais de análise geoespacial sobre o avanço do COVID-19 nos 295 municípios de Santa Catarina. Resultados: o Estado apresentou casos em todos os municípios, e uma taxa de infecção por Covid-19 de 1,63%. No modelo de regressão realizado, a cobertura pela Estratégia de Saúde da Família apresentou correlação com a mortalidade e a taxa de infecção pela Covid-19. A quantidade de respiradores apresentou correlação com a mortalidade. Conclusão: em Santa Catarina a Estratégia de Saúde da Família e a compra de novos respiradores, apresentam-se como aliados no enfrentamento à COVID 19..Au

Objective: to relate the coverage by the FHS and the availability of respirators with the transmission and mortality rate of COVID-19 in the state of Santa Catarina, Brazil. Materials and methods: this is an ecological study, which uses computational models of geospatial analysis on the progress of COVID-19 to the 295 cities in Santa Catarina. The correlation between the FHS coverage and the number of respirators grouped in the mesoregions was calculated with the COVID-19 transmission and mortality rates. Results: the state had low infection rates of 0.07% and mortality of 1.72%, when compared to Brazil. There was an increase in cases in smaller municipalities, indicating the interiorization of the pandemic. There was no correlation between FHS coverage with infection and mortality. However, respirators are associated with lower mortality. Conclusion: regional disparity was found in the presence of respirators in the state's micro-regions, suggesting an imbalance in the quality of care for critically ill patients during the pandemic..Au

Expression of miR-203a-3p in pancreatic cancer tissues and cells and its effect on proliferation, migration and invasion of BxPC-3 cells / 中国肿瘤生物治疗杂志

@#[摘 要] 目的：探讨miR-203a-3p对胰腺癌BxPC-3细胞增殖、迁移和侵袭能力的影响。方法：运用癌症基因组图谱（TCGA）数据库筛选胰腺癌组织和癌旁组织中差异表达的miRNA，分析miRNA高表达与低表达时胰腺癌患者的生存率和临床分期；利用TarBase数据库分析miRNA与癌症相关的GO功能与KEGG通路，利用DIANA Tools、miRDB和TargetScan网站预测miR-203a-3p的靶基因。将miR-203a-3p mimic及NC mimic、miR-203a-3p inhibitor及NC inhibitor转染至BxPC-3细胞，用qPCR法检测胰腺癌细胞和胰腺正常上皮细胞HPNE中miR-203a-3p、miR-192-5p和miR-451a表达水平，以CCK-8法、Transwell小室法和克隆形成实验分别检测BxPC-3细胞的增殖、迁移、侵袭和集落形成能力。结果：通过TCGA数据库筛选出18个胰腺癌组织中差异表达的miRNA，其中miR-203a-3p、miR-192-5p、miR-451a具有物种保守性，且其与胰腺癌临床癌症分期、细胞周期和患者生存率相关（均P<0.05）；生物信息学网站预测显示miR-203a-3p的候选靶基因是PPM1A，PPM1A与多基因存在相互作用。miR-203a-3p、miR-192-5p和miR-451a在BxPC-3和Aspc-1细胞中均高表达（均P<0.01）。miR-203a-3p mimic组BxPC-3细胞中miR-203a-3p表达水平以及细胞增殖、迁移和侵袭能力均显著提高（均P<0.01）；miR-203a-3p inhibitor组细胞中miR-203a-3p表达水平以及细胞增殖、迁移和侵袭能力均显著降低（均P<0.01）。结论：miR-203a-3p在胰腺癌组织及细胞中均高表达，其表达与患者生存和临床分期相关，可调控BxPC-3细胞的增殖、迁移和侵袭能力。

Analysis of the characteristics of falls among Chinese primary and middle school students in 2018 / 中国学校卫生

Objective@#To analyze the characteristics distribution of falls among students aged 6-17 in 2018, and to provide data support for preventing falls among students and formulating the corresponding policies.@*Methods@#Data of falls among students aged 6-17 in China in 2018 were collected from the the National Injury Surveillance System (NISS) for analyzing its demographic characteristics, injury occurrence and clinical traits of falling.@*Results@#In total, 42 735 cases of fall aged 6-17 were collected from the NISS in China in 2018, which accounted for 54.03% of all cases, with a sex ratio of 2.34∶1, the proportion of students aged 6-11 was the highest(53.78%). The proportion of falls from March to June was the highest(42.12%), and the peak time when falls occurred was forenoon 10:00-10:59(8.40%). School and school-related area(40.40%), home(18.96%) and public residential institution (15.35%) were the sites where falls mainly occurred. The top three activities when falls occurred were leisure activities(47.41%), sports activities(23.90%) and walking(9.77%). Bruise/scrape(54.49%), sprain/strain(21.98%) and fracture(12.69%) were the major nature of injury. The most common body parts falls involved were lower limbs(34.71%), head(29.85%) and upper limbs(25.10%). The injury of falling was mainly characterized by mild ones(83.44%).@*Conclusion@#There were more cases of falls on students aged 6-17 from the NISS in China in 2018, mainly males. The epidemiological characteristics were relatively variable, so targeted prevention program of falls should be conducted.

The value of 18F-PSMA PET/CT imaging in detecting bone metastasis of prostate cancer / 西安交通大学学报(医学版)

【Objective】 To compare the detection efficiency of 99mTc-MDP SPECT and PSMA PET/CT in detecting bone metastases in patients with prostate cancer. 【Methods】 We retrospectively collected data of 83 patients diagnosed with prostate cancer in The First Affiliated Hospital of Xi’an Jiaotong University from March 2019 to July 2020, concurrent with 99mTc-MDP SPECT and 18F-PSMA PET/CT whole body imaging in the same period. Two nuclear medicine physicians attending a double-blind interpretation compared whether the patients with bone metastases detected by two imaging methods under different PSA levels and different Gleason scores, and further analyzed the location and number of inconsistent bone metastases as well as the ability of PET/CT to detect metastatic lesions other than bone. 【Results】 Compared with 99mTc-MDP SPECT, 18F-PSMA PET/CT could detect more prostate cancer patients with bone metastases (P<0.001). When TPSA<10 ng/mL or >20 ng/mL, the detection rate of PET/CT for bone metastasis was higher than that of whole body bone scan (P<0.05). When Gleason score>8, PET/CT was more effective in detecting bone metastasis. The detection rate was higher than that of whole body bone scan (P<0.05). The lesions with positive PET/CT but not diagnosed by bone scan were mainly located in the chest bone, spine bone, and pelvic bone; the lesions with positive bone scan but missed by PET/CT were also more common in chest bone, with low nuclide uptake. The average SUVmax was 2.62±0.47 (1.60-3.30), and adjacent to the liver, spleen or salivary glands with higher metabolism. There were 21/51 (41.18%) cases of lymph node metastasis found outside of bone, 5/51 (9.80%) cases of lung metastasis, and 1/51 (1.96%) cases of liver metastasis. 【Conclusion】 18F-PSMA PET/CT imaging is significantly superior to 99mTc-MDP whole-body bone imaging in diagnosing bone metastasis of prostate cancer, and it can detect metastases other than bone.

Protective effects of ischemic postconditioning on skeletal muscle following crush syndrome in the rat

ABSTRACT Purpose To investigate the effect of ischemic postconditioning (IPostC) on skeletal muscle and its optimal protocol. Methods This article is about an animal study of rat model of crush syndrome. Sixty rats were randomized into nine different IPostC intervention groups and a control group. The anesthetized rats were subjected to unilateral hindlimb 3-kg compression with a compression device for 6 h, followed by nine different IPostC intervention protocols. Results Serum levels of creatine kinase (CK) at 3 h post-crush became 2.3-3.9 times among all 10 groups after crush. At 72 h post-crush, serum CK level was reduced to 0.28-0.53 time in all intervention groups. The creatinine (CREA) level in the control group was elevated to 3.11 times at 3 h post-crush and reduced to1.77 time at 72 h post-crush. The potassium (K+) level in the control group was elevated to 1.65 and 1.41 time at 3 and 72 h post-crush, respectively. Conclusions Our IPostC intervention protocols can effectively protect rats from crush-induced elevation of serum CK, CREA, and K+ levels. The timing of IPostC intervention should be as early as possible, to ensure the protective effect.

Psychotic and affective symptoms of early-onset bipolar disorder: an observational study of patients in first manic episode

Objective: Presence of psychotic symptoms seems to be a commonplace in early-onset bipolar disorder (BD). However, few studies have examined their occurrence in adolescent-onset BD. We sought to investigate the frequency of affective and psychotic symptoms observed during the first manic episode in adolescents. Methods: Forty-nine adolescents with bipolar I disorder (DSM-IV criteria) were admitted to a psychiatric hospital during their first acute manic episode. Assessment for current psychiatric diagnosis was performed by direct clinical interview and the DSM-IV version of the Diagnostic Interview for Children and Adolescents (DICA). Results: Teenage inpatients with BD consistently exhibited typical manic features, such as euphoria, grandiosity, and psychomotor agitation. In addition, disorganization and psychotic symptoms were present in 82 and 55% of the total sample, respectively. There was no significant difference in symptoms between early- and late-adolescent subgroups. Remarkably, most patients (76%) reported previous depressive episode(s); of these, 47% had prominent psychotic features in the prior depressive period. Conclusion: These findings suggest that disorganization and psychotic symptoms during the first manic episode are salient features in adolescent-onset BD, and that psychotic depression frequently may precede psychotic mania. Nevertheless, differential diagnosis with schizophrenia should be routinely ruled out in cases of early-onset first psychotic episode.

Analysis of injury epidemiological characteristics in children aged 6-17 based on data from the National Injury Surveillance System in China from 2015 to 2018 / 中国学校卫生

Objective@#To understand the epidemiology characteristics of child injury aged 6-17. Data was from the National Injury Surveillance System (NISS) and the results of the study would provide corresponding intervention strategies and decision-making for child injury prevention.@*Methods@#Descriptive analysis was applied to depict the general information, injury event and clinical characteristics of child injury aged 6-17 from 2015 to 2018.@*Results@#A total of 331 663 child injury cases aged 6-17 were reported, with the male and female ratio appeared as 2.19∶1. 15:00-18:59 was the peak time of injury cases from 2015 to 2018. The majority of the injuries occurred unintentional(94.85%). The top three causes of injury cases were falling(51.38%), blunt injury (12.50%)and road traffic injury(11.27%). The injuries occurred mainly at home(28.23%), in schools/public places (27.70%) and on the road/street(20.35%). The main activities were leisure activities (46.67%) and sports activities(14.36%). 49.06% cases were bruise. 31.18% of the injury involved with head, but 83.32% of injuries were minor, while 90.05% left hospital after the treatment.@*Conclusion@#Falls, blunt injury and road traffic injury are the key causes of children aged 6-17 to go to the outpatient /emergency department for treatment. Prevention and control should be carried out according to the epidemic characteristics of injuries among children of different genders and ages.

Analysis of the characteristics of injury among children aged 0-5 years: results from Chinese National Injury Surveillance System in 2018 / 中国学校卫生

Objective@#To understand the epidemiologic characteristics of injury among children aged 0-5 years in 2018, and to provide evidence for prevention and control measures of injury in children.@*Methods@#Data of injury in children aged 0-5 years in China in 2018 were collected from National Injury Surveillance System (NISS) for the descriptive epidemiologic analysis.@*Results@#A total of 74 355 injury cases were reported in children aged 0-5 years in 2018, with the gender ratio of 0.66, in which 98.13% were unintentional injuries. The top three causes of injury were falls (56.76%), blunt injuries (9.80%) and animal related injuries (7.81%). Injuries mainly occurred during 17:00—20:59 (32.09%) and 10:00—11:59 (13.95%). The top three places where injuries might occur were home (65.70%), public residence (13.06%), highway/street (10.94%). Recreational activities (64.21%), basic life activities (16.93%) and walking (5.66%) were the main activities when injuries occurred. Of all injury cases, most were mild, while 13.73% of cases were moderate or severe. Head, upper limb and lower limb were main injuries sites, which accounted for 49.44%, 28.59% and 11.70% of all cases respectively.@*Conclusion@#Injury is an important cause for children aged 0-5 years to go to the outpatient/emergency department for treatment, indicating that the prevention of injury in such age group should be strengthened. It is recommended to further improve the data collection on child injury in order to provide more evidence for child injury intervention.