Chronic subdural hematoma (CSDH) is a common neurosurgical disease, especially in elderly patients, and its treatment currently includes medication conservation, surgical intervention and combination therapy. Although many cases have achieved good results through drug treatment, as far as the present situation is concerned, surgical intervention is still an irreplaceable treatment, especially for patients with large amounts of hematoma, even those with cerebral hernia or recurrence. However, there are many surgical methods about CSDH, the clinical selection is controversial, what is more, there has been some progress in minimally invasive surgery in recent years. In this paper, the surgical methods of CSDH are summarized as follows. The purpose is to provide for clinical evaluation and selection.

Objective:Whether extralevator abdominoperineal excision (ELAPE) improves survival and safety remains controversial.Systematic review of all comparative studies to define the superiority of ELAPE to conventional abdominoperineal excision (APE).Methods:Corresponding data,with case-control studies or cohorts regarding intraoperative perforation rate,the local recurrence rate and postoperative complications in the ELAPE group and the APE group,were retrieved from PubMed,Embase,the Cochrane Library,Chinese Biomedical Literature (CMB),VIP,China National Knowledge Infrastructure (CNKI),and Wanfang Database.Meta-analysis was performed by using RenMan 5.2.Results:A total of 10 articles were included.Intraperative perforation rate (MD=0.54,95％ CI 0.31 to 1.39,P=0.03),local recurrence rate (MD=0.30,95％ CI 0.21 to 0.42,P＜0.001) in the ELAPE group was significantly lower than that in the APE group.The difference in positive margin rate between the 2 groups was not statistically significant (P=0.07).Conclusion:Through gap repair of episiotomy and individualized therapy can improve ELAPE postoperative quality of life.ELAPE shows certain advantages in treating lower rectal cancer comparing to APE,but it should pay attention to individualized treatment.More studies through large sample multi-center,medium and long term randomized design are necessary to determine the effect of surgery on tumor.

Objective To explore the relationship between visuospatial abilities of the students ma-jor in air traffic management and their performances,and then provide theories of their vocational classified. Methods 104 healthy male college students were tested by the cognitive laterality battery (CLB),which included visuospatial tests and verbal-sequential tests.At the same time,their performances assessed by air traffic management stimulators.Results Subjects with higher scores achieved by operating on air traffic management stimulators have higher visuospatial abilities,which was confirmed by the visual spatial scores (A) ((0.183±0.094) vs (0.060±0.338), t=41.57, P=0.000) and cognitive laterality quotient (CLQ) ((0.087±0.108) vs (-0.096±0.101), t=43.14, P=0.000)).However,compared with others in lower scores group,their scores on the phonological tests (P) reduced ((0.096±0.081) vs (0.157±0.092), t=6.81, P=0.012) ) .Moreover,there were the significant positive correlation between their performance on air traffic management stimulators and A ( r=0.749, P<0.01) ,CLQ ( r=0.663, P<0.01) ,cognitive performance quotient (CPQ) ( r=0.394, P<0.01).Conclusion For air traffic management occupation,the higher visual spatial abilities were the base of having the higher performance.Thus the visuospatial abilities may be as a good index of selecting and vocational classified for air traffic management students.

OBJECTIVETo investigate the effect of Porphyromonas gingivalis lipopolysaccharide (LPS) on proliferation and inflammatory factors expression of human periodontal ligament stem cells (HPDLSCs).

METHODSHPDLSCs were cultivated and identified. Experiment was divided into 3 groups according to culture solution: Group A with alpha-MEM culture solution containing 10 microg.mL-1 LPS, group B with supernatant fluid containing 10ng.mL-1 LPS stimulated monocyte, group C with alpha-MEM culture solution. The proliferation ability of HPDLSCs was analyzed by MTF assay. The expression levels of interleukin-1beta (IL-1beta), interleukin-6 (IL-6), tumor necrosis factor (TNF-alpha) mRNA of HPDLSCs were detected by reverse transcriptase polymerase chain reaction(RT-PCR).

RESULTSHPDLSCs had clonality, bone and fat differentiation ability. Compared with group C, the proliferation ability of HPDLSCs of group A and group B was significantly inhibited, and the proliferation ability of HPDLSCs of group B were more significantly inhibited than that of group A (P<0.05). The expression of IL-1beta, IL-6 and TNF-alpha mRNA of group A and group B increased compared with the control group, and the expression of IL-1beta, IL-6 and TNF-alpha mRNA of group B increased more than that of group A (P<0.05).

CONCLUSIONPorphyromonas gingivalis may inhibit the proliferation of HPDLSCs directly or indirectly through LPS and increase expression of inflammatory factor, exacerbate periodontal inflammatory tissue damage and delay the self-repairing of periodontal tissue.

Cell Differentiation ; Humans ; Interleukin-1beta ; Interleukin-6 ; Lipopolysaccharides ; Monocytes ; Organic Chemicals ; Periodontal Ligament ; Porphyromonas gingivalis ; RNA, Messenger ; Stem Cells ; Tumor Necrosis Factor-alpha

In order to make the national standard method of "General Test Method in Salt Industry-Determination of Iodine" (GB/T 13025.7-2012) more standardized and strict,basing on work experience,literatures and books,the authors listed the details needed to be amended and completed,including method principle,writingof chemical equations,preparation and calibration of standard titration solution,blank tests,sample weighing and result calculation,starch indicator,etc.At the same time,we gave out our opinions and suggestions aiming to provide reference for standard methodologist in revising and updating the standard method.

Objective:To investigate the clinical effect of ultrasound-guided fine needle aspiration in the diagnosis and treatment of thyroid diseases.Methods:A retrospective analysis was conducted in 300 cases who received ultrasound-guided thyroid fine needles from January 2014 to April 2017 in the First People's Hospital of Xiaoshan District.The clinicopathological data of the puncture cells were compared with the histopathological results of 15 patients who agreed to undergo surgery.Results:The results of pathologically diagnosed as suspected malignant lesions, thyroiditis, cystic thyroid cysts, benign thyroid adenomas, the proportion of positive cell components were 7.67%, 20.00%, 12.67%, 1.33% and 46.67%, respectively.The overall positive cell rate was 88.33%.The sensitivity of US-FNAB for the diagnosis of malignant diseases was 50.00%(3/6), the specificity was 55.56%(5/9), the positive predictive value was 42.86%(3/7), and the negative predictive value was 62.50%(5/8), the false positive rate was 57.14%, and the false negative rate was 37.50%.Conclusion:Ultrasound-guided thyroid fine needle aspiration technology has an irreplaceable importance in the clinical diagnosis and treatment of thyroid disease.Because of its high accuracy and safety, which is worthy of promoting in medicine.

Objective:To explore the cognitive processing characteristics of semantic emotion Stroop and memory recognition in pilots with depression, and to systematically reveal the cognitive processing characteristics of attention and memory.Methods:The semantic emotional Stroop task and memory recognition test were performed in 36 depressed pilots and 36 healthy pilots.The results of attention and memory in cognitive processing were analyzed by repeated measurement analysis of variance using SPSS 18.0 software.Results:In the semantic emotion Stroop, the response time of the depression group was longer than that of the control group ( F(1, 70)=7.03, P=0.008), and the response time of the depression group(579.55±141.62)ms ) was longer than that of the neutral words (565.66±132.60)ms, P=0.003) and positive words (563.09±138.88)ms, P<0.01). In memory recognition, the accuracy of response to emotion words in the depressed group was higher than that in the control group ( F(1, 70)=23.15, P<0.01). The accuracy of response to negative words was higher in the depressed group than that to positive words ((0.50±0.32) vs (0.32±0.21), P=0.006) and neutral words ((0.50±0.32) vs (0.33±0.23), P=0.007). The depression group showed a conservative bias towards negative words ((1.46±0.40), P<0.01), and negative words compared with neutral words ((0.63±0.24), P<0.01) and positive words ((0.57±0.27), P<0.01) were cautious and conservative. Conclusion:Patients with depression have attention bias toward the negative information in semantic information processing, and negative memory bias in memory recognition.

Objective To analysis the on-site quality control assessment results of salt iodine content in Zhengzhou City,and to understand and master the actual professional abilities and level of grass-roots laboratory analyzers,and to search the problems and make improvement measures.Methods The total of 22 analyzers from 11 affiliated grass-roots laboratories of Zhengzhou City were gathered to take part in the on-site theoretical examination.The theoretical assessment was divided into five parts:measurement principle,application range,reagent preparation,key steps,and calculation formula of results.Parallel samples of standard materials were determinated in laboratory units,to evaluated operational skills,the problems during the process were recorded simultaneously.The content of the theoretical assessment and the rules for the assessment of on-site skills were based on the "Measurement of Iodine for the General Test Method of the Salt Industry" (GB/T 13025.7-2012).Results In the theoretical assessment,the correct rates of reagent preparation and key steps were 100％,and that of measurement principle,application range,and calculation formula of results were more than 80％.The main problems of operation skills were from liquid loading,sample weighing and titration operation,etc.One laboratory result of quality control sample exceeded the reference range and was judged to be unqualified.Conclusions The theoretical basis of some laboratory analyzers are not solid,the operational skills are lack of standardization.In view of the current situation,as the higher level technical guidance unit,it is necessary and responsible for us to formulate practical measures in training,guidance and assessment to help them improve business level and abilities.

Objective: To explore the effect of the comprehensive intervention on overweight and obesity among middle school students at the population level (health education lecture and official account push) and individual level (personalized dietary guidance), so as to provide a reference for preventing and controlling their overweight and obesity. Methods: Three junior high schools and three senior high schools were randomly selected in Guangzhou in 2018 by convenience sampling. Through physical examination, 1 457 overweight and obese students aged from 12 to 18 years old were screened. Intervention was administered through "Student Personalized Dietary Guidance" manual, health tweets on the official accounts, and health education lectures from September 2018 to December 2019. The Chi square test was used to compare the difference in overweight and obesity constituent ratio between the two groups before and after the intervention. And intervention effect was evaluated by analyzing the number needed to treated(NTT). Results: The proportion of overweight before the intervention was 66.71% (972/1 457), and decreased to 59.92% (873/1 457) after the intervention; the proportion of obesity before the intervention was 33.29% (485/1 457), which decreased to 26.63% (388/1 457) after the intervention. Among obese students, the smallest NNT was seen in the girl group aged 12-13 years (NNT=2.6, 95% CI =1.9-4.1), while the largest NNT in the boy group aged 14-18 years (NNT=5.9, 95% CI =4.7-8.1). The NNT of the girls aged 12-13 years was the smallest (NNT=2.7, 95% CI =2.2-3.5), and the NNT of the boys aged 14-18 years was the largest (NNT=7.4, 95% CI =6.0-9.7). Conclusion Health education at population level (health education lectures, official account push) with individual level (personalized dietary guidance) can effectively intervene overweight and obesity among middle school students in Guangzhou.

OBJECTIVEThis study aims to investigate the expression and relationship of CD44 and CD133 in normal oral mucosa, oral potentially malignant disorder (OPMD), and oral squamous cell carcinoma (OSCC). This work also analyzes the relationship between such expression and clinical factors. This study intends to evaluate the clinical value of using CD44 and CD133 as indices to evaluate the carcinogenic potential of OPMD.

METHODSClinical data from 60 patients with OPMD, 60 patients with OSCC, and 10 cases of normal oral mucosa were analyzed. Double immunohistochemical analysis was applied to investigate the expression of CD44 and CD133 in paraffin sections of normal oral mucosa, OPMD, and OSCC tissues. Subsequently, the relationships between such expression and clinical factors were analyzed.

RESULTSThe positive rates of CD44 expression in the normal oral mucosa, OPMD, and OSCC tissues were 100.00%, 96.67%, and 71.67% (P<0.05), respectively. Meanwhile, the positive rates of CD133 expression in the normal oral mucosa, OPMD, and OSCC tissues were 0.00%, 35.00%, and 63.33% (P<0.05), respectively. The expression of CD44 and CD133 was found to be correlated (P<0.05). Such expression was related to the clinical stages and lymphatic metastasis of OSCC (P<0.05).

CONCLUSIONSCD44 and CD133 can be used individually as clinical indices to evaluate the carcinogenic potential of OPMD.
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AC133 Antigen ; Carcinogenesis ; Carcinoma, Squamous Cell ; Humans ; Hyaluronan Receptors ; Lymphatic Metastasis ; Mouth Mucosa ; Mouth Neoplasms