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Objective:To analyze the clinical characteristics of patients infected with 2019-nCoV Omicron variants BA.1 and BA.2 in Zhuhai city.Methods:A retrospective study was conducted to compare clinical characteristics of patients infected with 2019-nCoV Omicron variants BA.1 and BA.2, who were admitted in the Fifth Affiliated Hospital of Sun Yat-sen University during January 13 to March 8 2022. The Mann-Whitney U-test or Kruskal-Wallis H test was used for quantitative data, and the χ2 test or Fisher’s exact test was used for qualitative data. Results:Among 122 patients infected with the Omicron variant, there was 79 adults (BA.1 23 cases, BA.2 56 cases) and 43 children (BA.1 19 cases, BA.2 24 cases). In adults, patients infected with BA.2 sub-variant had a higher baseline viral loads at admission than BA.1 infected patients [7.64(6.92, 8.55) lg copies/mL vs. 6.64(6.04, 7.34) lg copies/mL; Z=-3.022, P=0.003]; compared to BA.1 patients, BA.2 patients had a higher proportion of mild and asymptomatic cases and a lower proportion of common infection cases ( χ2=8.052, P=0.012); the proportion of patients with pneumonia imaging changes in BA.1 patients was higher than that in BA.2 infected patients [(6/23, 26.1%) vs. (2/56, 3.6%); χ2=6.776, P=0.009). In children, the rate of fever in BA.2 group was higher than that in BA.1 group [(16/24, 66.7%) vs. ( 5/19, 26.3%); χ2=6.910, P=0.009); the proportion of patients with reduced lymphocyte counts in BA.2 group was higher than that in BA.1 group [(17/24, 70.8%) vs.(1/19, 5.3%); χ2=18.734, P<0.001). Compared with adult cases, children with BA.2 sub-variant infection had higher fever rate [(16/24, 66.7%) vs. (19/56, 33.9%); χ2=7.317, P=0.007). The viral loads of daily nasal swabs in BA.2 infected patients increased first and then decreased in both adults and children, with a greater decrease than BA.1 during the first two weeks. Conclusions:Compare with 2019-nCoV Omicron variant BA.1, BA.2 has a higher baseline viral loads in adults, which means much more contagious in the early stages. But the viral load drops faster in BA.2 infected patients. In children, BA.2 patients are more likely to have fever and reduced lymphocyte counts, which indicates that the prevention and control of 2019-nCoV Omicron sub-variant BA.2 is more difficult.
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Non-suicidal self-injury(NSSI) is defined as deliberate " destruction to body issue without conscious suicidal intent" and which is not culturally and socially sanctioned.The evaluation of NSSI mainly includes explicit measurement and implicit measurement.In recent years, implicit measurement has received wide attention from scholars, among which the implicit association task(IAT), as a tool to measure the relative attitude towards objects in individuals' implicit cognition and to prevent the interference of consciousness, which is an effective method to evaluate NSSI.On the basis of introducing the background of implicit attitude, this paper summarized the research progress of implicit attitude in distinguishing and predicting NSSI from behavioral and neuroimaging perspectives.Firstly, compared with the group without NSSI history, the NSSI group had a more recognized implicit attitude towards NSSI, which was correlated with the frequency and severity of NSSI.Secondly, compared with other known traditional predictors, whether implicit attitude is a better predictor of subsequent behavior of NSSI remains controversial.Finally, there are not many studies on the biological basis of implicit attitude towards NSSI in NSSI populations.Preliminary results suggest that the activation of salience networks and the reduction of gray matter volume in some brain regions (such as the dorsal striatum) may be related to implicit attitude in NSSI populations.To sum up, measuring implicit attitudes towards NSSI is useful for screening and predicting people at risk for NSSI, especially when individuals have false reports or low self-awareness.In addition, this paper also put out some shortcomings for future research and clinical intervention.
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Objective To investigate the myocardial protective effects ,mechanism and safety of recombinant human erythropoie-tin(rHuEPO) pretreatment in the patients undergoing cardiac surgery with cardiopulmonary bypass (CPB) .Methods Thirty pa-tients with rheumatic heart disease undergoing valve replacement surgery were randomly divided into the observation group and the control group ,15 cases in each group .The observation group was given rHuEPO 300IU/kg by hypodermic injection on preoperative 2 d ,once daily for twice .The control group was given the same dose of normal saline .The blood routine was performed before sur-geryandonpostoperative7d.Thelevelsofcreatinekinaseisoenzyme(CK-MB)andtroponinT(cTnT)weredetectedbeforeopera-tion ,at 6 ,24 ,72 h after the aorta opening (T0 ,T6 ,T24 ,T72 ) .At the end of CPB ,myocardial biopsy was conducted for detecting the myocardial apoptosis index (AI) .The CPB time ,aortic cross clamp(ACC) time ,postoperative ICU stay ,blood transfusion and post-operative complications were recorded .Results The level of postoperative CK-MB and cTnT in the two groups were significantly increased after the aorta opening ,which at T6 was highest ,followed by a downward trend .The levels of CK-MB and cTnT at vari-ous time points in the observation group were significantly lower than those in the control group .The main effect of rHuEPO pre-treatment had statistical difference between the two groups (P= 0 .01) .Myocardial AI in the observation group was significantly lower than that in the control group ,the difference showing statistical significance (P<0 .01) .The observation group had no risk leading to obviously increase postoperative Hb ,Hct values and thromboembolism ,but the postoperative blood transfusion amount was reduced .Conclusion rHuEPO pretreatment has the protective effect on myocardium in the patients undergoing cardiac surgery under CPB ,which can reduce myocardial apoptosis and has safe reliability .
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Objective To investigate the relationship between serum uric acid level and atrial fibrillation in patients with coronary heart disease.Methods Two hundred and forty-seven inpatients with coronary heart disease were selected.All the patients were divided into simple coronary heart disease group (90 cases),coronary heart disease with paroxysmal atrial fibrillation group (85 cases) and coronary heart disease with continuous/permanent atrial fibrillation group (72 cases).The age,history of cardiovascular events,uric acid,echocardiographic characteristics and drug-taking history were carefully recorded.The risk factors of atrial fibrillation in patients with coronary heart disease were analyzed by Logistic regression.Results The level of history of smoking,diastolic blood pressure,body mass index,total cholesterol,high density lipoprotein cholesterol,low density lipoprotein cholesterol,creatinine,fasting plasma glucose,postprandial 2 h plasma glucose,interventricular septal thickness,carotid intima-media thickness and drug-taking history among the 3 groups showed no statistical differences (P ＞ 0.05).The age,systolic blood pressure,uric acid,left atrial diameter (LAD),left ventricular end diastolic diameter (LVEDD) in coronary heart disease with paroxysmal atrial fibrillation group and coronary heart disease with continuous/permanent atrial fibrillation group were significantly higher than those in simple coronary heart disease group,the left ventricular ejection fraction (LVEF) was significantly lower than that in simple coronary heart disease group,and there were statistical differences (P ＜ 0.01 or ＜ 0.05).The result of Logistic regression analysis showed high uric acid,high age,expanded LAD and LVEDD were the independent risk factors of atrial fibrillation in patients with coronary heart disease,and uric acid showed the most significant correlation (P =0.001,OR =1.061,95％ CI 1.026-1.096).Conclusion High serum uric acid level maybe a risk factor of atrial fibrillation in patients with coronary heart disease.
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Objective Through the correlation study of fibroblast growth factor 23 (FGF-23) and chronic heart failure to investigate the pathogenesis of chronic heart failure and provide a new method for chronic heart failure diagnosis.Methods One hundred and twenty-eight chronic heart failure patients (chronic heart failure group) were involved in this study.According to the level of left ventricular ejection fraction (LVEF),they were divided into LVEF slightly lowing group (LVEF 40％-50％,50 patients),LVEF moderately lowing group (LVEF 30％-39％,35 patients),LVEF severely lowing group (LVEF ＜30％,43 patients).Fifty healthy people was as control group.The level of FGF-23,parathyroid hormone (PTH),creatinine (Cr),urea nitrogen (BUN),blood calcium,blood phosphorus,N-terminal pro-B-type natriuretic peptide (NT-proBNP) were detected.The patients in two groups were performed color Doppler ultrasonography.Results The level of FGF-23,blood phosphorus,PTH,left ventricular mass index (LVMI),NT-proBNP in chronic heart failure group were significantly higher than those in control group [68.44(55.85-94.73) ng/L,34.18(30.57-38.87) ng/L,(1.13 ± 0.13) mmol/L vs.(1.02± 0.12) mmol/L,(15.51 ± 3.99) ng/L vs.(9.97 ± 0.89) ng/L,(112.27 ± 52.02) g/m2 vs.(71.37 ± 12.95) g/m2,(6 265.3 ± 15 991.6) ng/L vs.(76.12 ± 51.80) ng/L](P ＜ 0.01).The level of blood calcium,glomerular filtration rate (GFR) in chronic heart failure group were significantly lower than those in control group [(2.28 ±0.16) mmol/L vs.(2.48 ±0.13) mmol/L,(78.28 ± 14.20) ml/ (min ·1.73 m2) vs.(85.03 ± 14.44)ml/ (min·1.73 m2)] (P ＜ 0.01).Spearman correlation analysis showed that FGF-23 had positive correlation with age (r =0.256,P ＜0.01),blood phosphorus (r =0.326,P ＜0.01),PTH (r =0.584,P ＜0.01),NT-proBNP (r =0.799,P ＜ 0.01),LVMI (r =0.540,P ＜ 0.01),and had negative correlation with blood calcium (r =-0.308,P ＜ 0.01),GFR(r =-0.527,P ＜ 0.01).The level of FGF-23 was increased when LVEF reduced.Conclusions It has significant correlation between the level of FGF-23 and the degree of chronic heart failure.It suggests that the level of FGF-23 can evaluate the myocardial systolic function and ventricular remodeling.