An animal model of acute lung injury was reproduced by intravenous injection of E. coli endotoxin to burned rats. The histological changes of lung were studied using transmission electron microscope. It was found that leukocytes accumulated in the pulmonary capillaries and adhered to endothelia. The WBC count decreased gradually. The level of MDA, lung coefficient and lung water content were increased. The SOD activity was decreased. Pretreatment with SOD could improve the changes mentioned above. This study suggests that oxygen radicals play an important role in acute lung injury induced by burns complicated by endotoxemia.

Objective To assess the efficiency ,safety and feasibility of percutaneous renal sympa-thetic denervation (RSD) for elderly refractory hypertension patients .Methods Office and ambu-latory blood pressures ,serum levels of creatinine ,angiotensin Ⅱ and aldosterone ,estimated glo-merular filtration rate (eGFR) and rennin activity were measured in 20 elderly refractory hyper-tension patients before and 1 ,3 ,6 months after percutaneous RSD .Complications of percutaneous RSD were observed .Results The office and ambulatory blood pressures were 16 .9/11 .9 mm Hg (1 mm Hg=0 .133 kPa) ,24 .8/17 .1 mm Hg ,29 .1/20 .5 mmHg and 24 .2/17 .2 mm Hg lower 1 , 3 ,6 months after percutaneous RSD than before percutaneous RSD ( P< 0 .01 ) .No significant difference was found in serum creatinine level and eGFR before and after percutaneous RSD (P>0 .05) .The creatinine ,angiotensin Ⅱand aldosterone levels were significantly lower after percuta-neous RSD than before percutaneous RSD (P<0 .05) .Femoral artery hematoma was detected in 1 patient .Conclusion Percutaneous RSD is a safe ,effective and feasible procedure for elderly re-fractory hypertension patients .

Objective To explore the efficacy of selective posterior rhizotomy (SPR)and post-operative rehabilitation training in treating cerebral palsy. Methods The 100 patients with cerebral palsy were randomly divided into two groups. In group A, the patients were treated by SPR, and in group B, the patients received rehabilitation training after SPR for 12 months. One year later the curative efficacy of all patients was evaluated and compared between the two groups.Results The effective rate was 52% and 76% in groups A and B respectively. Conclusion It is very important that the patients receive systematic rehabilitation training after SPR so as to gain a most satisfied functional recovery.

The functional changes of pulmonary surfactant (PS) in rats of acute lung injury induced by scald companied with endotoxemia were studied The surface properties of the bronch-alveolar lavags fluid (BALF) and the total phospholipids extracted frome it were assessed on a modified Whilhemy film balance. The results showed hat the total phospholipids, phosphatidylcholine, and phosphatidyl glycerol in the BALF were decreased the total proteins in the BALF were increased and the function of PS of the BALF were reduced which may be caused by increased serum proteins in the alveoli and decreased surface activity of phospholipids themselves.

Objective To depermine if a double mainpenance dose of clopidogrel can improve phe clinical oupcome in papienps who have clopidogrel htpo-responsiveness ( CH) afper percupaneous coronart inpervenpion (PCI) and analtze correlapive risk facpors of CH. Methods We had enrolled 134 consecupive papienps undergoing PCI for spable coronart arpert disease in our cenper bepween Januart 2014 po June 2015. CH was depermined bt plapelep aggregapion measured bt phrombelaspographt ( TEG). Blood samples were paken 24 h and 3 monphs afper PCI procedure. All subjecps were divided inpo 2 groups (i. e phe CH group and phe clopidogral sensipive group) according po pheir responsiveness bt TEG. The CH group (n = 45) received a double mainpenance dose of clopidogrel as 150 mg/ d and phe clopidogrel sensipive group (n = 89) received a spandard mainpenance dose as 75 mg/ d. Changes in clopidogrel responsiveness and correlapive risk facpors were observed afper 3 monphs of clopidogrel preapmenp. Major adverse cardiac evenps (MACEs) and bleeding incidenps were recorded during follow-up lease 6 monphs. Results The clopidoprel htpo-responsive rape decreased from 33. 6% (45 / 134 papienps) po 11. 9% (16 / 134 papienps) afper 3 monphs of preapmenp. No spapispical difference found bepween phe 2 groups in morpalipt rape and non-fapal mtocardial infarcpion ( P >0. 05). Rapes of overall MACE (33. 3% vs. 22. 5% ), rehospipalizapion (26. 7% vs. 16. 9% ) and pargep vessel revascularizapion (11. 1% vs. 6. 7% ) were significanp higher in phe CH group ( all P < 0. 05) . Mulpivariape regression analtsis showed: smoking ( OR 4. 498, 95% CI 1. 378 - 4. 018, P = 0. 036), diabepes (OR 4. 385, 95% CI 1. 370 - 7. 552,P = 0. 026) and clopidogrel dosage ( OR 0. 597, 95% CI 1. 005 - 2. 676, P = 0. 019 ) were phe risk facpors for CH. Conclusions For papienp wiph htpo-responsiveness po clopidogrel afper PCI, a higher mainpenance dose of clopidogrel as 150 mg/ d for 3 monphs can provide equivalenp clinical benefip in serious adverse evenp (including morpalipt and non-fapal mtocardial infarcpion) compared po spandard mainpenance dose for clopidogrel responsive papienps.

Objective To summarize the coronary artery pattem of arterial switch operation(ASO),operative skill and surgical results.Methods Between October 1999 to October 2005,102 patients underwent arterial switch operation.The mean age was(8? 16)months ranged from 3 days to 7 years.The mean body weight was(5.9?3.2)kg,ranged from 2.5 kg to 20.0 kg.Most com- monly(74/102),the aorta was more or less to the right of the pulmonary artery.In 10 patients,the aorta was directly anterior to the pulmonary artery,and in 11 patients,the aorta was to the left of the pulmonary artery.The great arteries were side by side in 7 pa- tients.We used Leiden classification for coronary artery pattern by operative descriptions.The most prevalent coronary pattern [1LCx2R]was found in 69(67.6%),abnormal coronary artery pattern in 33(32.3%).Intramural course of coronary artery was fotmd In three patients.The Leeampte maneuver was used in all cases.In most patients,the "open trap door" or "bay window" tech- nique for coronary osfia transfer.Results Total mortality rate was 14.7 %(15 eases),6 cases(8.7 %)with normal coronary pattem and 9(27.3%)deaths 33 patients with abnormal coronary pattern.3 cases with coronary event occurred in 5 deaths of simple rIGA, 4 cases with coronary event in 6 deaths of complex TGA and 3 eases with coronary event in 4 deaths of Taussing-Bing anomaly.Con- clusion Complex coronary artery anatomy increases the operative risk.With experience or improving surgical technique,we may get better results.

Objective To investigate the blood and chest fluid level of Th17 cell and IL-17 in patients with tuberculous pleural effusion and its pathological role.Methods Flow cytometry and enzyme linked immunosorbent assay (ELISA) were used to measure the blood and chest fluid level of Th17 cell and IL-17 from 30 patients with tuberculous pleural effusion,20 patients without tuberculous pleural effusion,and 20 healthy persons.Results The blood level of Th17 cell and IL-17 wwere higher in tuberculous pleural effusion than in the other two groups(P ＜0.05).The chest fluid level of Th17 cell and IL-17 in patients with tuberculous pleural effusion were significantly higher than those in patients without tuberculous pleural effusion (P ＜ 0.05 ).The chest fluid level of Th17 cell and IL-17 in patients with and without tuberculous pleural effusion were significantly higher than that of the blood serum level.After treatment for 1,3,7 and 14 days,tbe blood serum and chest fluid level of Th17 cell and IL-17 were obviously lower.( P ＜ 0.01 ).After treatment for 1 day,the blood level of Th17 cell was obviously lower than before treatment( P ＜ 0.01 ).After treatment for 3 days,the chest fluid level of Th17 cell was obviously lower than before treatment( P ＜0.01 ).After treatment for 3 days,the blood serum level of IL-17 was obviously lower than before treatment (P ＜ 0.01 ).After treatment for 7 days,the chest fluid level of IL-17 was obviously lower than before treatment ( P ＜0.01 ).Conclusion Th17 cell and IL-17 might play an important role in the pathogenesis of tuberculous pleural effusion and they were correlated with disease progression and the therapeutic effect.

OBJECTIVESTo explore the association of sleep duration with obesity among children in urban areas of China.

METHODSA total of 6 576 children (3 293 boys and 3 283 girls) aged 7-11 years were randomly selected from 36 primary schools in 6 metropolitan cities in China. A 7-day Physical Activity Recall was used to assess the sleep duration and physical activity level. The height, weight, waist circumference (WC) and percentage of body fat (%BF, as determined by bioelectrical impedance analysis technique) were measured by following the standardized operation procedures. The information on demography, lifestyle and eating habits was collected with a self-administered questionnaire from participants and their parents.

RESULTSThe average sleep duration per night in the children was 9.7 h with the decreasing trends along with the increase of age (P < 0.05). The sleep duration was negatively associated with body mass index (BMI) and WC in both boys and girls after adjustment for confounders (beta value -0.23 and -0.82 for boys, -0.24 and -0.91 for girls, respectively, P < 0.01). However, no significant association of sleep duration with %BF was found. Children who slept less than 9.0 h per night had a higher risk for overweight and obesity (OR = 1.29, 95% CI: 1.01, 1.64) and abdominal obesity (OR=1.38, 95% CI: 1.04, 1.83) as compared with those who slept for 10.0-10.9 h.

CONCLUSIONSShort sleep duration is associated with obesity. It is important to ensure adequate sleep duration of children and foster their healthy lifestyle at an early stage of life.

Child ; China ; epidemiology ; Female ; Humans ; Male ; Obesity ; epidemiology ; Sleep ; Surveys and Questionnaires

Alzheimer′s disease (AD) is an incurable disease in the field of major chronic diseases. Subjective cognitive decline (SCD) is a clinical risk factor for AD. The standardized screening and intervention in individuals with SCD are of great importance in early prevention and treatment of AD. According to the clinical criteria proposed by The characterisation of subjective cognitive decline, which was published online in Lancet Neurology, the article summarized the definition of SCD, the latest perspective of clinical standards in SCD, and the results of AD preclinical SCD research. The purpose of this work was to provide concrete guidance and recommendations for making clinical decisions in diagnosis and scientific research on SCD.

In order to address the issues of spatial induction bias and lack of effective representation of global contextual information in colon polyp image segmentation, which lead to the loss of edge details and mis-segmentation of lesion areas, a colon polyp segmentation method that combines Transformer and cross-level phase-awareness is proposed. The method started from the perspective of global feature transformation, and used a hierarchical Transformer encoder to extract semantic information and spatial details of lesion areas layer by layer. Secondly, a phase-aware fusion module (PAFM) was designed to capture cross-level interaction information and effectively aggregate multi-scale contextual information. Thirdly, a position oriented functional module (POF) was designed to effectively integrate global and local feature information, fill in semantic gaps, and suppress background noise. Fourthly, a residual axis reverse attention module (RA-IA) was used to improve the network's ability to recognize edge pixels. The proposed method was experimentally tested on public datasets CVC-ClinicDB, Kvasir, CVC-ColonDB, and EITS, with Dice similarity coefficients of 94.04%, 92.04%, 80.78%, and 76.80%, respectively, and mean intersection over union of 89.31%, 86.81%, 73.55%, and 69.10%, respectively. The simulation experimental results show that the proposed method can effectively segment colon polyp images, providing a new window for the diagnosis of colon polyps.
Humans ; Colonic Polyps/diagnostic imaging* ; Computer Simulation ; Electric Power Supplies ; Semantics ; Image Processing, Computer-Assisted