As the passage of environmental atmosphere entering the body,the respiratory tract suffers persistent challenge from foreign substances.The mucosal immune system of the respiratory tract is the main defense line against the invasion of pathogens,which needs to distinguish not only beneficial and detrimental materials but also resident and pathogenic bacteria.Because the knowledge about respiratory mucosal immunity is limited,the immunopathologic mechanisms of related diseases such as asthma,acute lung injury, chronic obstructive pulmonary disease, and respiratory infection need investigation.The study about the immune features of the respiratory tract not only contributes to the prevention and treatment of respiratory disease but also provides ideas for the development and design of new vaccines and medicines.

Objective To observe the influences of combined general and epidural anesthesia on hemodynamics.Methods Twenty one patients were randomly divided into two groups, general anesthesia (GA group, n=11) and combined general and epidural anesthesia (GA+EA group, n=10). With Swan Ganz technique, hemodynamic parameters were measured 5min following 0.6 and 1.0 MAC enflurane inhalation in GA group, and 5min following 0.6 MAC enflurane inhalation and 10min after combined epidural lidocaine in GA+EA group.Results Compared with the baselines, in both groups with 0.6 MAC enflurane inhalation, MAP decreased significantly (P0.05); in GA group with 1.0 MAC enflurane inhalation, MAP, HR, SVR, SI and CI decreased significantly (P0.05). As compared with those following 0.6 MAC enflurane inhalation, only in GA+EA group MAP and SVR decreased, and SI rose obviously (P

Adult ; Coal Mining ; Cognition Disorders ; etiology ; Explosions ; Follow-Up Studies ; Humans ; Surveys and Questionnaires ; Survivors ; Young Adult

With the development of technology, the new technologies contact with the medical profession increasingly close. Mobible nursing information system (MNIS) is a new technology product of the combination of the nursing profession, which will digitize the introduction of paperless care industry, providing convenient for clinical work, real-time technical service is an important tool for clinical work. The application of MNIS have played an important role in confined the nursing profession, disease management and pharmaceutical management, more users discover problem from different professional perspective, thus the MNIS should be improved for all-round care. This article is consist of the domestic and care information systems development, application and effect, as well as its application in the clinical factors of its research progress in clinical application were reviewed to provide a basis for the development of leadership and decision-making about MNIS, and thus, enhance the mobile application of the effectiveness of care information systems and promoting their improvement.

In response to problems from the development of multi-drug-resistant pathogenic bacteria,it is urgent to find new antimicrobials.Antimicrobial peptides(AMPs) are a kind of ideal new antimicrobials with the advantages including their potential for broad-spectrum activity,rapid bactericidal activity and low propensity for resistance development,and have a bright future.Alpha-helical antimicrobial peptides are a main kind of AMPs.The following features was reviewed and elucidated including the structure and activity relationship(SAR) from different aspects including the degree of helicity,hydrophobic moment,hydrophobicity,net positive charges and so on,and the application of SAR on the molecular design and improvement of AMPs.

Objective To explore the effect and mechanism of Kruppel-associated box(KRAB) type zinc-finger protein Apak on the transcription of ribosomal RNA(rRNA) under hypoxic conditions.Methods Real-time quantitative PCR(qRT-PCR) was used to detect the level of rRNA and the effect of Apak on the transcription of rRNA.The expression and phosphorylation level of proteins were examined by Western blotting.Immunofluorescence assay was used to observe the location of Apak.Results Under hypoxia (0.3%O2),the transcription level of rRNA increased first and then decreased in Apak wild type cells.In Apak knock-out cells,the transcription level of rRNA kept decreasing under hypoxic conditions.The repression of Apak on rRNA synthesis and the nucleolus location of Apak disappeared,and the expression and phosphorylation level of Apak were down-regulated under hypoxic conditions for 3 h.Conclusion Under hypoxic conditions,the disapperance of Apak repression on rRNA transcription could lead to a temporary increase in rRNA.

Objective To explore the clinical significance of detecting hand-foot-and-mouth disease (HFMD) children's cardiac enzymes and neuron-specific enolase (NSE).Methods One hundred and fiftytwo HFMD children were selected as observation group,and 56 cases of healthy children were selected as control group.Cardiac enzymes and NSE levels were compared between two groups.Results The levels of aspartic transaminase(AST),creatine kinase(CK),creatine kinase isozyme-MB(CK-MB),lactate dehydrogenase (LDH),alpha-hydroxybutyric dehydrogenase (α-HBDH),and NSE in observation group were (40.4 ± 14.8)U/L,(109.9 ± 87.5) U/L,(47.0 ± 29.4) U/L,(316.9 ± 119.2) U/L,(256.2 ± 96.1) U/L,(30.9 ± 18.2) μ g/L,and in control group were (24.5 ± 9.2) U/L,(77.4 ± 32.5) U/L,(15.4 ± 7.4) U/L,(134.0 ± 34.4) U/L,(131.1 ± 37.7)U/L,(9.8 ± 4.6) μ g/L.The differences between two groups were statistical significance(P ＜ 0.01).Conclusion The heart and nervous system lesions of HFMD children can be found through detecting cardiac enzymes and NSE early,which provide evidence for early diagnosis and treatment.

Objective To compare the agreement among Chinese 1992, 2008 and UICC 2010 staging systems of nasopharyngeal carcinoma (NPC) and evaluate their predictive value of radiotherapeutic prognosis.Methods 347 NPC patients without distant metastasis treated in our hospital from 2000 to 2005 were retrospectively analyzed.Every patient was categorized into T, N, and clinical stage by Chinese 1992, 2008 and UICC 2010 staging systems, respectively.Kappa value was used to evaluate the agreement among three systems.Kaplan-Meier method was used to analyze the 5-year overall survival (OS), local-free survival (LFS) and distant metastasis-free survival (DMFS), the difference between subgroup was tested by Logrank.Results The agreement of clinical stage, T and N stage between Chinese 2008 and UICC 2010 staging system was better than that of them compared to 1992 staging system, Kappa value were 0.700、0.881 and 0.722.The agreement of T stage was better than N and clinical stage among these three staging system.The difference of OS between stageⅢ and stage Ⅳ was significant in Chinese 2008 and UICC 2010 staging system (χ2=4.48,P=0.034;χ2=8.88,P=0.003), and with no different in 1992 staging system (χ2=0.40,P=0.526).There was no significant difference of LFS between T1 and T2,T2 and T3,T3 and T4 in all staging systems (χ2=1.85,0.53,0.50,P=0.174,0.467,0.479;χ2=1.25,2.10,1.99,P=0.264,0.148,0.159;χ2=0.77,0.60,0.87, P=0.381,0.441,0.350).There were no significant differencesin 1992 staging system, while there was significant differences of DMFS between N1 and N2, N2 and N3 in 2008 stage system, N1 and N2 in UICC 2010 stage system.Conclusions The predictive value of Chinese 2008 and UICC 2010 staging system for prognosis were similar, and were better than that of 1992 staging system in NPC.

Objective To evaluate the effects of different doses of propofol or isoflurane on the cochlear blood flow (CBF) in guinea pigs.Methods Fifty-four adult male guinea pigs,aged 3 months,weighing 400-500 g,were randomly divided into 6 groups (n =9 each).In P1,P2 and P3 groups,propofol was infused for 115 min at 10,20 and 40 mg· kg-1 · h-1,respectively,after a loading dose of 5 mg/kg was injected over 5 min.In S1,S2 and S3 groups,isoflurane was inhaled for 120 min with end-tidal concentrations of 1％,2％ and 3 ％,respectively.Mean arterial pressure and CBF were recorded before administration (baseline,T1) and during the period of drug administration.Distortion product otoacoustic emission (DPOAE) was measured at T1,at the end of administration (T2) and 1 h after administration (T3).Five animals in each group were sacrificed and organs of Corti were harvested for observation of morphology of out hair cells by scanning electron microscopy.Results Propofol decreased MAP and increased CBF and DPOAE amplitude in a dose-dependent manner.Isoflurane decreased MAP and CBF in a dose-dependent manner.1％ isoflurane increased DPOAE amplitude,however,2％ and 3％ isoflurane decreased it and caused damage to out hair cells.Conclusion Propofol induces an increase in CBF in guinea pigs,while high concentration of isoflurane induces a decrease in CBF.Isoflurane inhibits CBF autoregulation,which makes CBF more sensitive to perfusion pressure,thus causing damage to hearing function.This is the reason why high concentration of isoflurane induces a decrease in CBF.

A poly(amino black 10B)/Nafion modified glassy carbon(GC) electrode for the detection of dopamine(DA) has been developed. The modified electrode showed an excellent electrocatalytic effect on the oxidation of DA. In cyclic votammetric measurements, the redox peak current increased linearly with the concentration of DA in the range of 2.0×10~(-7) 3.0×10~(-5) mol/L in PBS of pH 6.0, with a correlation coefficient of 0.9993 and 0.9991, respectively. The detection limit(S/N=3) was 1.0×10~(-7) mol/L. Moreover, the modified electrode exhibited good repeatability and long-time stability, and avoided the interference of ascorbic acid. The modified electrode has been used for the determination of DA in the injections and calf serum with good recovery and reproducibility.