Objective To clarify insulin resistances and pancreatic ?-cell hypofunctions in cases with different glucose tolerance. Methods 5523 Chinese underwent OGTT and were classified into normal glucose tolerance (NGT), isolated impaired fasting glucose (IFG), isolated impaired glucose tolerance (IGT), IFG with IGT (IFG+IGT) and type 2 diabetes mellitus (T2DM) groups based on OGTT results. HOMA-IR, HOMA-?△I30/△G30and AUCI of different groups were statistically analyzed by SPSS12.0. Results Compared to NGT group, HOMA-IR was increased by 41%, 19%, 47% and 69% respectively in IFG, IGT, IFG+IGT and T2DM groups (all P

ObjectiveTo evaluate the alternations of left ventricular (LV) torsion of myocardial ischemia before and after reperfusion using speckle tracking imaging (STI).MethodsFourteen open-chest pigs underwent randomizedly 1 minute (group A) or 15 minutes (group B) of left anterior descending (LAD) ligation and followed up for 1 week.Torsion of LV in both groups were quantified by STI before LAD occlusion,LAD occlusion immediately,and 1-,5-,30-,60-,90-minute and 1-week after reperfusion.ResultsOne minute after reflow,decreased peak apical rotation and peak LV torsion fully recovered in the inner layer in group A.In contrast,there was a brief resumption in group B during 30min after reflow from (6.5 ± 0.8)° to (3.4 ± 1.2)°( P ＜0.01 ) and from (7.8 ± 1.0)° to (6.1 ± 1.1 ) ° ( P ＜0.01 ),respectively.Peak LV subepicardial torsion increased gradually after reperfusion.Conclusions As a result of various durations of ischemia,peak torsion in subendocardium and subepicardium change differently before and after reflow.STI may be suitable for evaluation of the extent of ischemia by noninvasive quantification of torsion in subendocardium and subepicardium.Therefore,duration of assessment of myocardial ischemia can be prolonged.

Objective To investigate the most sensitive markers of left ventricular(LV) torsion which can reflect infarct size by assessing the relationship between routine markers of LV torsion and infarct size using speckle tracking imaging (STI).Methods Fifteen open-chest pigs underwent 120 minutes of left anterior descending (LAD) ligation followed by 12 hours of reperfusion.Rotation and torsion of LV were obtained by STI before LAD occlusion,LAD occlusion immediately,and 30,60,90 minutes and 12 hours after reperfusion.Infarct size was measured by nitrotetrazolium blue chloride staining.Results LAD ligation resulted in a dramatic decrease in both subepicardial and subendocardial peak apical rotation or peak LV torsion.Twelve hours after reperfusion,all of the peak rotation and torsion remained significantly reduced (P ＜ 0.01 versus AMI).At AMI,peak bulk LV torsion and peak bulk apical rotation inversely correlated with infarct size (r = - 0.81,P ＜0.01; r = - 0.69,P ＜0.01).There existed the good relationship at 12-hour follow-up after reperfusion.The relationship was superior to that of other torsion markers.Conclusions Peak bulk LV torsion and peak bulk apical rotation are the most sensitive markers of LV torsion which can reflect infarct size.

This study was aimed to explore the effect of Catalpol on the cerebral infarction size in acute phase, water content and inflammatory reaction of early recovery after permanent middle cerebral artery occlusion (pM-CAO). Adult male Sprague-dawley rats were subjected to chemical method to establish MCAT model. The detec-tion was made on neurobehavioral symptoms, cerebral infarction volume and water content at 24 h after surgery. The content of intedeukin-6 (IL-6), intedeukin-10 (IL-10) and nuclear factor kappa Bp65 (NF-κBp65) were de-tected after pMCAO with enzyme-linked immunosorbent assay (ELISA). The results showed that 24 h after MCAT, Catalpol 15-60 mg·kg-1 can significantly improve the neurobehavioral symptoms (P < 0.01, or P <0.001). The Catalpol 15 mg·kg-1 can significantly reduce cerebral infarction volume (P < 0.05). The Catalpol 30-60 mg·kg-1 can significantly reduce water content (P < 0.05). Catalpol 30-60 mg·kg-1 can significantly improve neurobehav-ioral symptoms from the 7th day after pMCAO. On the 14th after pMCAO, the content of IL-10 and NF-κBp65 of ischemia brain had no difference compared with sham-operated group. The IL-6 level of ischemia brain was obvi-ously reduced than the sham-operated group(P < 0.05). The intragastric administration of Catalpol 15 mg·kg-1 for 14 days can reduce the content of NF-κBp65 in the ischemia brain of model rats (P < 0.05). It was concluded that Catalpol can improve neurobehavioral symptoms of acute and subacute phase after cerebral ischemia, reduce infarcts and water content. These effects may not be related with its inhibition of inflammatory derived from cere-bral ischemia.

Objective: To biomechanically compare the initial stability of two cervical interbody cages with different surfaces on human specimens.Methods: Flexibility of twenty-three cervical motion segments (two groups) were tested in axial rotation, flexion/extension and lateral bending, intact and after implantation of a cervical interbody fusion cage (SynCage-C Curved, SynCage-C Wedged). An implant pullout concluded testing. Changes in range of motion (ROM) were analyzed.Results: Both cages were effective at reducing ROM in all directions, with no significant differences in effacency. The pullout force differed significantly between the two cages, the SynCage Curved being higher. Conclusion: Differences of surfaces of the two cages don't affect their initial stability. The cage with a better contoured surface had a higher pullout force.

Objective To study the expression of thymic stromal lymphopoietin(TSLP) and the activation of DCs in OVA-induced murine asthma model, and investigate the effects and underlying mecha-nisms of TSLP on lung inflammation. Methods Thirty BALB/c mice were randomly divided into control group, OVA group and TSLP neutralizing antibody treated group. The asthma model was evaluated by airway responsiveness and histological analysis of lung tissues ; The levels of TSLP mRNA in lungs were determined by quantitative real-time PCR; The expression of TSLP in lungs were determined by immunohistochemistry and Western blot; The expression of CD40, CD80, CD86 in BALF was detected by FACS. Results Both the histological analysis of lung tissues and the airway responsiveness were all consistent with the characteris-tic of murine asthma model. The expression of TSLP and TSLP mRNA in the OVA group was significantly in-creased compared with blank group. The expression of CD40, CD80, CD86 in BALF from OVA group was increased significantly compared with the control group. Furthermore, treating mice with TSLP neutralizing antibody reduced the expression of CD40, CD80, CD86 on dendritic cells, and IL-4, IL-5, IL-13 in the OVA group. Conclusion Our study indicate that TSLP was highly expressed in the bronchial epithelia of murine asthma model, via upregulation of CD40, CD80, CD86, induce DCs to active CD4~+ T cells and pro-duce type 2 responses, so that aggravating the lung inflammation of asthma. Blocking TSLP is capable of in-hibiting the production of Th2 cytokines, thus presents a promising strategy for the treatment of asthma.

Objective To evaluate the effect of moderate activities at moderate high altitude on acute mountain sickness (AMS) incidence .Methods Ninety-one healthy sea level residents traveled from sea level (345 m) to high altitude city (3200 m) ,by train within 48-hour .They walked 5 kilometers after 2-night stayed ,Lake Louis Score (LLS) Questionnaires ,blood pressure(BP) and oxygen saturation (SpO2 ) was administered before and after walking .Results Seven subjects were excluded because of incomplete data .The incidence of AMS before and after exercise was 20 .24% (n=17/84) and 11 .90% (n=10/84) respectively(P>0 .05) .Af-ter a 5 kilometer walking ,the heart rate increased from (73 .83 ± 9 .96)bpm to(84 .31 ± 12 .55)bpm (P<0 .05) ,Systolic BP and SpO2 level decreased from(128 .86 ± 13 .93)mm Hg to (124 .48 ± 13 .13)mm Hg ,(92 .80 ± 2 .25)% to (89 .94 ± 2 .45)% (P<0 .05) .Headache symptom improved after walking (P<0 .05) .Smoking was negative correlate with LLS score before and after ex-ercise(P<0 .05) .There is no relation between SpO2 and LLS scores .Conclusion Walking five kilometers at 3200 m improve head-ache symptom and tend to decrease AMS .

Abstract The COVID-19 pandemic has posed a series of complex challenges. COVID-19 in children and adolescents is generally less severe than in adults and the elderly; however, some children and adolescents may experience severe complications and adverse health effects even after mild or asymptomatic COVID-19 infections. The article focuses on gathering the epidemic characteristics, health impact, risk factors, prevention and control measures, and vaccination status of children and adolescents with COVID-19 infection to provide recommendations for protecting children and adolescents in the post COVID-19 era.

Objective To further strengthen the management of radiological health technical service institutions, standardize their technical service behaviors, and explore the supervision countermeasures for radiological health and technical service institutions. Methods The radiological health technical service institutions status questionnaires s were designed to survey the basic situation, professionals and technical personnel, the equipment configuration, testing items and workload of service institutions. Results By the end of 2019, there were 23 radiological health technical service institutions in Hebei province, including 8 disease control and occupational prevention institutions (accounting for 34.8%) and 15 third-party institutions (accounting for 65.2%); The distribution of regional agencies were unbalanced; There were 223 professional and technical personnel, of which 29.6% were senior technical professionals, 29.6% were intermediate technical professionals and 40.8% were other professionals.58.8% had a bachelor's degree or above, and 41.2% had a college degree or below; The majors of professionals were relatively scattered, with only 6.44% of radiological health, 5.15% of physics-related majors, and 51.07% of medical-related majors. Other majors involve chemical pharmacy, environmental engineering, public relations planning, food, English, accounting and other majors.The professional technical responsible person had no part-time job;. The institution were totally equipped with 308 sets of radiation protection detectors and 172 sets of phantoms, basically in line with the configuration requirements; All quality control system documents such as quality management manuals, procedural documents, operating procedures, and work instructions have been established; All test items applied by laboratory measurement certification have passed;Conclusion The CDC institutions were gradually shrinking, the private institutions were gradually increasing and the nature of the institutions was gradually diversified.The allocation of regional resources was unbalanced.It is suggestedto strengthen the training on the theoretical basis and professional skills of professionals in testing and evaluation. Increasing on-site practical training is a more important and effective way.It is recommended to strengthen the training of basic-level health administrative departments and supervisory agencies and improvethe sense of responsibility of supervisors.

Objective To understand the changing trend of Internet outpatient visits in public hospitals,and provide support for the development planning of Internet hospitals.Methods Using the data of Internet outpatient visits in a public hos-pital from January 2021 to June 2023,the ARIMA model and GM(1,1)model were constructed respectively.The mean absolute error(MAE)and root mean square error(RMSE)were used to evaluate the fitting effect,and the Internet outpatient visits from July to December 2023 were predicted based on the dominance model.Results ARIMA(1,2,1)model and GM(1,1)model were used to predict the number of return visits of Internet outpatient service.The average absolute errors were 369.86 and 978.84,and the root-mean-square errors were 479.49 and 1444.83,respectively.The ARIMA(0,1,0)model and GM(1,1)model were used to predict the number of Internet outpatient consultations.The average absolute errors were 297.23 and 369.62,and the root-mean-square errors were 413.61 and 496.30,respectively,indicating that the ARIMA model has a good prediction effect.The forecast results show that the predicted value of Internet outpatient visits in December 2023 is 14,831 cases,and the predicted value of consultation visits is 7461 cases.Conclusion The number of Internet outpatient visits in a public hospital will continue to rise from 2021 to 2023.Therefore,hospitals should fully realize the importance of Internet medical services,take ac-tive measures to continuously optimize the medical service model,and provide patients with high-quality,efficient and convenient Internet medical services.