ObjectiveTo investigate the prevenance rate and related factors of anxiety among the public before and after outbreak of COVID-19， and to provide scientific guidance for public health emergency response in psychological intervention field. MethodsBy using the convenient sampling method， residents in Chinese mainland participated in predesigned questionnaire survey from February 7^th to February 14^th， 2020， meantime， all the selected individuals were assessed using Self-rating Anxiety Scale （SAS）. The anxiety status was also retrospectively evaluated before January 20^th， prior to the outbreak. Thereafter， a before-and-after comparison was conducted on the anxiety status， and the related influencing factors were discussed. ResultsA total of 1 222 valid questionnaires were collected， with a valid rate of 93.8%. After the outbreak， the number of people with anxiety symptoms increased from 90 （7.4%） to 172 （14.1%）， with statistical difference （P<0.01）. The SAS score increased from （40.65±10.43） to （36.32±8.46）， with statistical difference （P<0.01）. For overall sample， the independent risk factors of anxiety aggravation included serious disruptions of daily life （P<0.01）， older age （P<0.01）， female （P<0.01）， poor education background （P=0.005）， occupied in medical staff （P=0.031） and lack of medical education （P=0.039）. For medical staff， the independent risk factors of anxiety aggravation included sense of being-alienated （P<0.01）， older age （P<0.01）， female （P=0.002） and serious disruptions of daily life （P=0.044）. ConclusionThe prevalence rate of anxiety is increased after the outbreak of COVID-19， especially among the general public with serious disruptions of daily life， older age， females， poor education background， and the lack of medical education， and among medical staff with sense of being-alienated， older age， females， and serious disruptions of daily life.

Objective: To study the effect of berberine (BR) on ventricular remodeling in experimental rats with myocardial infarction (MI) and its mechanisms.
Methods: The MI model of experimental rats was established by ligation of the left anterior descending coronary artery and the MI animals were randomly divided into 3 groups: MI+BR group, in which the rats received BR 20 mg/kg.d, Sham group and MI group, the rats in those 2 groups received the same volume of normal saline. All animals were treated for 8 weeks. The cardiac function and structure were assessed by echocardiography, cardiac interstitial collagen deposition was evaluated by Masson stain, the myocardial cell apoptosis was detected by Tunel method, and the activation of nuclear factor (NF-κB) was also examined.
Results: For echocardiography, MI group had enlarged left ventricular end diastolic diameter (7.28 ± 0.29) mm than Sham group (6.86 ± 0.36) mm,P<0.05, but it decreased in MI+BR group (6.89 ± 0.99) mm,P>0.05. MI group had increased left ventricular end systolic diameter (5.88 ± 0.33) mm than Sham group (4.61 ± 0.31) mm, but it decreased in MI+BR group (4.68 ± 1.17) mm, allP< 0.01. MI group showed increased left ventricular posterior wall compensatory hypertrophy (1.81 ± 0.85) mm than Sham group (1.67 ± 0.16 mm),P<0.05, while in MI+BR group, it was deereased to (1.65 ± 0.14) mm. MI group presented decreased LVEF (45.77 ± 3.17) % than Sham group (67.28 ± 4.15) %, but it increased in MI+BR group (64.64 ± 5.82) %, allP<0.01. For Masson stain, cardiac interstitial collagen deposition in MI group (11.39 ± 0.45) % was higher than Sham group (2.65 ± 0.45) %, but less in MI+BR group (7.00 ± 0.87) %, allP<0.01. For Tunel examination, the myocardial cell apoptosis index was increased in MI group (21.31 ± 2.34) than Sham group (0.99 ± 0.38), but decreased in MI+BR group (14.15 ± 1.62), allP<0.01. For NF-κB activation study, the nuclear protein p65 content was higher in MI group (0.14 ± 0.02) ng/ml than Sham group (0.06 ± 0.01) ng/ml, but lower in MI+BR group (0.10 ± 0.02) ng/ml, allP<0.01.
Conclusion: Application of BR may improve the ventricular remodeling and cardiac function in experimental MI rats, it might be because of BR partially inhibit NF-κB activation, reduce collagen deposition and help anti-apoptosis in myocardial cells.

Objective To systemically analyze the effect of continuous aspiration of subglottic suction (CASS) on the incidence of ventilator-associated pneumonia (VAP) and other outcomes in mechanical ventilated patients.Methods PubMed,Cochrane Library,Ovid,EBSCOhost,ScienceDirect,Google scholar,CNKI,CBM and Wanfang Database were searched for the RCTs about the effect of CASS on the outcomes of mechanical ventilated patients from July 1994 to July 2014,and the relevant journals were also hand-searched.Data were extracted independently by two reviewers.Meta analysis was conducted using RevMan 5.1 software.Results Data extracted from 7 RCTs with a total of 1 566 patients were analyzed.The risks of developing clinically diagnosed VAP were significantly lower among the patients receiving CASS [RR =0.54,95％ CI(0.43,0.65),P＜0.01],episodes of VAP occurred later in patients receiving CASS [MD=3.52,95％CI(1.98,5.06),P＜0.01],the duration of mechanical ventilation [MD=-2.03,95％CI(-2.23,-1.73),P＜0.01]and length of ICU stay were reduced [MD=-2.99,95％CI(-3.75,-2.23),P＜0.01],while no significant differences were detected between the two groups regarding the mortality rate [RR=0.98,95％CI (0.80,1.20),P＞0.05].Conclusion This study proved that the CASS did have effect in reducing the incidence of VAP,but it is limited by lack of enough RCTs with high quality.Large sample of high quality RCTs is necessary to examine the wider applicability of CASS.

Objective To describe the burden of caregivers of children with asthma,and to provide reference for the development of family care support program.Methods Qualitative research was used to carry out semi-structured interviews with 13 caregivers of children with asthma in the pediatric outpatient of the First Affiliated Hospital of Guangzhou Medical University.The data collected were analyzed with Colaizzi 7-step analysis method.Results The carcgiver burden was classified into 4 themes,including time and energy exhaustion,heavy economic burden,insufficient knowledge of care and negative emotions.Conclusions The burden of caregivers of children with asthma has a relatively great impact on the daily work and life,even the physical and mental health.Care workers should be concerned about the status of caregiver burden and provide targeted interventions,which could help caregiver adapt to their roles,maintain and promote the health of children patients and their families.

[Objective] To explore the cytoprotecfion of hydrogen sulfide (H_2S) against cobalt chloride (CoCl_2)-induced apeptosis in PC12 cells and the underlying mechanisms. [Methods] CoCl_2 (a chemical hypoxia-mimetic agent) was used to establish the chemical hypoxia-induced PC12 cell injuries model. Sodium hydrosulfide (NaHS) was used as a H_2S donor. The viability of PC12 cells was measured by CCK-8 assay. The percentage of apeptotic cells was assessed by propidium iodide stain flow cytometry (FCM). The morphological change of apeptotic cells was tested by using the chromatin dye Hoechst 33258. The mitochondrial membrane potential (MMP) was analyzed by rhodamine 123 staining and photofluorography. The level of reactive oxygen species (ROS) in PC12 cells was measured by DCFH-DA staining and photofluorography. [Results] CoCl_2 induced a decrease in cell viability and an increase in percentage of apeptosis in PC12 cells along with dissipation of MMP as well as overproduction of ROS. When PC12 cells were treated with Naris 30 min before CoCl_2 treatment a decrease in viability of PC12 cells induced by 600 μmol/L CoCl_2 was concentration-dependently blocked by NaHs (100, 200, and 400 μmol/L). Pretreatment with NaHS at 200 and 400 μmol/L obviously reduced the apepetotic percentage of PC12 cells induced by 600 μmol/L CoCl_2 and inhibited the dissipation of MMP and overproduction of ROS. [Conclusion] H_2S protected PC12 cells against CoCl_2-induced apeptosis, which may be associated with the inhibition of H_2S on the dissipation of MMP and overproduction of ROS induced by CoCl_2.

Objective To explore the clinical value of measuring solubie serum CD44 variant 6sCD44v6 in patients with colorectal cancer. Methods Serum leves of sCD44v6 and CEA in96 patients with colorectal and in 24 healthy indivduals were detected by ELISA andchem-iluninesenle immunoassoly,respectively.Some ehnieal pathological indexes were analyzed.Results Mean sCD44v6 level in patients with colorectal cancer was 275.3+-115.8 ng/ml,which was significantly hirher than that in healthy controls(61.3+-7.8 ng/ml,P＜0.05).When using the mean+2s sCD44v6 level of healthy controls as the cut-off value,sCD44v6 level were abnormally elevated in 71 of 96(73.96%)patients with coloreeatal cancer.Conclusion The sCD44v6 leveland positive rate also increased with Dukesstage and tumor metastasis Compared with serum CEA level,the sCD44v6 level might reflect the tumor invasion and metastasis more directly and sensitively.

Objective To investigate the role of NF-κB activation in the inflammatory mechanism of chronic obstructive pulmonary disease (COPD).Methods Monocyte were collected from patients with COPD and were cultured,and stimulated with lipopolysaccharide (LPS) ; NF-κB p65 activation was measured by immunohistochemistry; SOD ,MDA and IL-8 and lung function were determined synchronously.Results The NF-κB p65 was induced by LPS in monocyte in all subjects, but it was most markedly done in COPD patients with exacerbateions; There was positive correlation between the NF-κB p65 activation of monocytes and levels of IL-8 and MDA in circulation, but it was negative correlation to SOD.Conclusion NF-κB plays a vital role in regulating product of IL-8 in monocyte in COPD.

OBJECTIVETo evaluate fluorescence in situ hybridization (FISH) in the detection of inv (16) (p13; q22).

METHODSSpectrum red labeled yeast artificial chromosome (YAC) clone 854E2 which spans the breakpoint cluster region in MYH11 in band 16p13 and single color interphase FISH were used to detect inv (16) in 26 cases of acute myelomonocytic leukemias (AML-M(4)), and the results were compared with that of conventional cytogenetic analysis.

RESULTSR banding karyotyping test revealed no inv (16) in 25 cases, one AML M(4Eo) case showed inv (16) by G banding. Nine cases including all three M(4Eo) had inv (16) by FISH analysis, among whom the characteristic fluorescence signal pattern of the inv (16) was seen in 13.3% to 32.1% (median, 21.3%) of the tested cells.

CONCLUSIONYAC 854E2 and interphase FISH provide a powerful technique in the detection of inv (16) (p13q22).

Adult ; Aged ; Chromosome Inversion ; Chromosomes, Human, Pair 16 ; genetics ; Female ; Humans ; In Situ Hybridization, Fluorescence ; Interphase ; genetics ; Leukemia, Myelomonocytic, Acute ; genetics ; pathology ; Male ; Middle Aged

OBJECTIVETo study the myelodysplastic syndrome(MDS) with 1;7 translocation in five cases and to determine further the constitution and origin of centromere of the derivative chromosome resulting from 1;7 translocation.

METHODSBone marrow chromosome preparation of five cases was made using direct method or short- term culture. Karyotypic analysis was carried out by R-banding technique. Dual-color fluorescence in situ hybridization(FISH) using Spectrum Red and Spectrum Green directly labeled chromosome 1-specific a-satellite DNA probe(red) and chromosome 7-specific a-satellite DNA probe(green) was performed in three patients of them.

RESULTSAll of the five cases had 1;7 translocation. The centromere of the derivative chromosome 7p/1q was constituted with red and green signals in three of them.

CONCLUSIONThe result of dual-color FISH confirms that the centromere of the derivative chromosome resulting from 1;7 translocation originated from both centromeres of chromosome 1 and chromosome 7.

Adult ; Chromosomes, Human, Pair 1 ; genetics ; Chromosomes, Human, Pair 7 ; genetics ; Female ; Humans ; In Situ Hybridization, Fluorescence ; methods ; Karyotyping ; Male ; Myelodysplastic Syndromes ; genetics ; Translocation, Genetic

Objective To observe the effect of physical factors and promotion canalization on closed injury of brain.Method 68 cases of closed injury of brain were given the comprehensive rehabilitation therapy with many physical factors and promoting canalization technique.Result The patients' consciousnesses were significantly improved after treatment.The motorial function of hemiplegic limbs was distinctly improved(P< 0.05).The balance functions were distinctly improved(P< 0.001).The activities of daily living abilities were significantly improved(P< 0.05).Conclusion The physical factors and promoting canalization treatment on the closed injury of brain are functionally effective.