Objective To explore the effect of support with total parenteral nutrition(TPN)or early enteral and parenteral nutrition(EN+PN)on immune function of critically ill neurosurgical patients.Methods In this prospective control study,patients were divided inte TPN group and EN+PN group based on the timing of admission.The changes of immunological indicators including CD3,CD4,CD8,CD4/CD8,CD3/CD25,IgA,IgG,IgM,and serum protein before and after nutritional support were compared.Results The percentage of T lymphocyte subsets CD3,CD4,and CD8,the ratio of CD3+/CD25+,the plasma leveh of IgA,IgM,and IgG,and the serum protein were significantly increased after nutrifional supports(P<0.05,P<0.01).However,compared with the TPN group,the percentages of T lymphocyte subsets(CD3,CD4,and CD8),the ratio of CD4+/CD8+,the plasma levels of IgA,IgM,and IgG,and the serum protein were significantly higher in EN+PN group(P<0.05,P<0.01).Conclusions Both TPN and EN+PN can promote the recovery of immune function,while EN+PN is superior to TPN.Early nutritional support should be provided to critically ill neurosurgical patients.

Objective:To develop and validate a liquid chromatography-tandem mass spectrometry method for determining levofloxacin in plasma sample from pediatric patients.Method:This is a prospective, observational study. The clinical residual plasma samples from healthy individuals for physical examination in Children's Hospital Affiliated to Zhengzhou University were collected as blank matrix. Plasma samples from five pediatric patients who did not receive levofloxacin or ciprofloxacin in the department of Respiration were collected for methodological evaluation. In addition, 34 clinical plasma samples from 22 pediatric patients (9 males and 13 females; mean age (8.1±3.7) years) using levofloxacin was collected, and their plasma concentrations were determined. Using ciprofloxacin as the internal standard, levofloxacin in plasma samples was quantified by liquid chromatography-tandem mass spectrometry following protein precipitation using acetonitrile. A C18 column (Shim-pac GIST-HP C18, 2.1 mm×100 mm, 3 μm) and mobile phase composed of water (containing 0.1% formic acid) and acetonitrile (containing 0.1% formic acid) with gradient elution at a flow rate of 0.4 ml/min were used to separate levofloxacin. The column temperature was 40 ℃, injection volume was 1 μl and the total analysis time was 9 min. Levofloxacin and ciprofloxacin were ionized with an ESI source in positive ion mode and detected in multiple reaction monitoring (MRM) mode. The detected ions of levofloxacin and ciprofloxacin were m/z 362.10→318.1 and 332.15→231.05, respectively. The method′s specificity, sensitivity, linearity, precision, accuracy, recovery rate, stability, matrix effect, and carry-over were validated. All statistical analyses were performed with SPSS statistical software (version 17.0). The normality of the data was detected by the K-S test. A P<0.05 was considered statistically significant for two tailed tests. Results:The LC-MS/MS method showed a good linearity within the range of 0.062 5-20 mg/L, with the lower detection limit of levofloxacin of 0.062 5 mg/L. The calibration curve for levofloxacin was Y=0.093X+0.010 ( R2>0.99). Under different quality control levels, the accuracy ranged from 92.57% to 104.39%, and the intra-day and inter-day imprecision ranged from 2.32% to 9.35%. These values were not affected by the normal matrix, 5% hemolysis matrix and 15% hyperlipidemia matrix. Furthermore, the levofloxacin plasma samples were stable in the short term. A total of 34 plasma samples from 22 patients were collected and analyzed. Only 2 plasma samples were below the lower limit of quantification, while the other plasma concentrations of levofloxacin were ranged from 0.091 to 6.755 mg/L. Cmax was (5.52 ± 1.09) mg/L. Conclusion:The LC-MS/MS method meets the requirements of the reference method and requires a small sample size (50 μl), making it suitable for the determination of levofloxacin in plasma from pediatric patients.

Objective:To analyze the application effect of the information platform based on the Internet of Things (IoT) in the screening and management of patients with chronic obstructive pulmonary disease (COPD).Methods:In this cross-sectional study, 151 062 residents who participated in the screening in the districts covered by 33 general hospitals and 289 primary medical institutions within the framework of Henan Provincial Center for COPD Prevention and Treatment from November 2021 to October 2022 were included as the subjects. Spirometer based on the IoT was used to conduct pulmonary function tests for subjects who scored 16 points or more with COPD Screening Questionnaire (COPD-SQ), and the subjects were evaluated and managed through the structured electronic data in the information platform. The distribution characteristics and follow-up of the subjects and COPD patients were described and the application effect of this strategy in patients screening and management was analyzed.Results:A total of 151 062 residents with complete basic information in the information platform completed the questionnaire. High-risk population of COPD accounted for 26.5% (40 042/151 062) of the population who received the questionnaire screening, and more than 50% had respiratory symptoms, such as chronic cough (59.4%), or shortness of breath (77.6%). The proportion of high-risk population increased with age, especially after 50 years old. Compared with non-smokers, the proportion of high-risk group was significantly higher (77.1% vs 16.4%) in the group with smoking index over 600. Biofuel exposure (61.3% vs 22.1%) and family history of respiratory diseases (64.2% vs 22.6%) were associated with an increased proportion of high-risk groups, with statistically significant differences ( P<0.001). 5 268 patients were diagnosed with COPD by pulmonary function tests, and the prevalence of COPD in high-risk groups was 27.8% (5 268/18 965), the prevalence rate of male was 34.0% (3 942/11 588), which was higher than that of female 18.0% (1 326/7 377). 2 950 patients (56.0%) completed at least one follow-up of symptom questionnaire and 510 patients (9.7%) completed more than one follow-up of pulmonary function test. Conclusion:The screening and management strategy of COPD based on the IoT and information technology can improve the efficiency of COPD screening, and improve the status quo of under-diagnosis and discontinuous follow-up of COPD.

OBJECTIVE：To study the protective effects of butein on oxidative stress injury of PC12 cell and its effects on mitochondrial function. METHODS：Rats PC12 cells were divided into normal control group，model group，solvent control group（1 ‰ dimethyl sulfoxide），butein high，medium and low concentration groups（2，1，0.5 μmol/L）. The latter 4 groups were given relevant reagent/medicine for intervention；24 h later，other groups were given 100 mU/mL glucose oxidase to induce oxidant stress model except for normal control group. After 4 h culture，cell survival rate，apoptosis rate，the levels or activities of ROS，MDA，SOD，CAT，GSH-Px，ATP，IL-1β and TNF-α as well as the change of MMP were detected. RESULTS：Compared with normal control group，cell survival rate，the levels or activities of SOD，CAT，GSH-Px and ATP were all decreased significantly，and apoptotic rate，the content of ROS，the levels of MDA，IL-1β and TNF-α were all increased significantly（P＜0.05 or P＜0.01），while the MMP was decreased significantly. Compared with model group，above indexes of solvent control group had no significant change （P＞0.05），cell survival rates，the levels or activities of SOD （except for medium and low concentration groups），CAT，GSH-Px（except for medium and low concentration groups），ATP（except for low concentration group）were increased significantly in butein high，medium and low concentration groups，while apoptotic rates，the content of ROS，the levels of MDA，IL-1 β and TNF-α were decreased significantly（P＜0.05 or P＜0.01），while the MMP were increased significantly. CONCLUSIONS：Butein can increase the antioxidant enzyme activity， stabilize mitochondrial function， inhibit oxidative stress and inflammationthus， increase energy generation inhibiting neuronal cell apoptosis ultimately exerting a neuroprotective effect.

ObjectiveTo compare the current development of physical therapists in China, Japan and South Korea. MethodsThe condition of configuration, education and practice of physical therapists in China, Japan and South Korea were browsed from the official websites and existing data. ResultsThe allocation, education and training mechanism, and the professional accreditation system needs to be optimized in China. ConclusionThe physical therapists should be allocated based on rehabilitation service settings and needing, trained based on the World Health Organization's Rehabilitation Competency Framework and the International Classification of Functioning, Disability and Health, and the professional system should be constructed based on the World Health Organization's Rehabilitation Competency Framework and national professional admission systems.

Humans ; Multiple Pulmonary Nodules ; Lung ; Lung Neoplasms/surgery* ; Solitary Pulmonary Nodule/surgery* ; Bronchoscopy