[Objective To explore the effect of problem-based learning(PBL) in biochemistry teaching in medical college. Methods Totally 128 students(2011 grade) of medical laboratory major were derived into experiment group(n=64)and control group(n=64). Lecture-based learning(LBL) was used in control group and PBL was used in experiment group.In control group,teachers did teaching design according to the needs of curriculum standards,employed multimedia courseware,explained the basic content of each chapter,class exercises and homework after class. In experimental group,PBL was conducted through establishing biochemistry teaching website based on school's teaching platform. Teach-ing process in experiment group included:grouping-selecting appropriate cases-consulting data-group discussing-summarizing by teachers. Theory test was carried out after the course and questionnaire was conducted for students in experiment group . Data were analyzed using the independent sample t test . Results Average test scores were higher in PBL group than in traditional group,with statistically signif-icant differences[(83.15±11.87)vs. (76.15±12.48)]. Questionnaire survey showed that more than 90.0%students in experiment group were interested in the PBL teaching method and thought that the PBL teach-ing method can enhance the enthu-siasm of learning, independent learning ability and comprehensive analysis ability. Conclusions PBL teaching method can improve the quality and the effect of biochemi-stry teaching and culture students' comprehensive ability. It is worthy of further study and popularization.

Objective To study the relationship between metabolic syndrome (MS) and anterior circulation infarction (ACI). Methods 271 ACI patients (166 men and 105 women) who fulfilled the diagnostic criteria of China Guideline for Cerebrovascular Disease Prevention and Treatment were enrolled. 147 control subjects (67 men and 80 women) without the clinical signs of cerebral infarction but with detailed case history, physical examination and CT or MRI were also selected. The prevalence and risk of MS were observed in the ACI and control group. MS was defined with the modified criteria in Chinese. Results The prevalence of MS in the ACI group and control subjects was respectively 43.17% and 19.05%. The prevalence of MS was significantly higher in the ACI group as compared with the control subjects (P<0.01). The component level of MS were significandy different between the two groups (P< 0.05). MS was associated with a 3.7 fold higher risk of ACI (P<0.01). Conclusions There is a close relationship between MS and ACI. MS is an important risk factor of ACI.

Objective To investigate the hyperuricemia(HUA)and the correlation of blood lipids of the 60 -70years peple in Renqiu area,and to provide the basis for guiding prevention and treatment of the elderly disease the region.Methods According to the cluster random sampling method,Renqiu permanent residents with the age of 60 to 70 years were selected as a screening object.In the total 5 010 cases screened object,2 163 were male(43.2%),2 847 were female(56.8%),with an average age of(64.29 ±3.05)years.The data of blood uric acid and total cholesterol(TC), triglyceride(TG),high -density lipoprotein(HDL -C),low -density lipoprotein(LDL -C)were collected.The rela-tionship between blood uric acid and blood lipids were analyzed.Logistic regression method was used to analysis the relationship between the hyperuricemia and lipids components.Results The overall prevalence of hyperuricemia in Renqiu was 6.1%(9.8% in male,3.2% in female).In men HUA group,the levels of blood uric acid,TG and LDL-L were 464.10(438.00 -508.65)μmol/L,1.54(1.00 -2.19)mmol/Land 2.66(2.25 -3.22)mmol/L,which were higher than those of normal uric acid group of 294.00(249.90 -338.08)μmol/L,1.13(0.84 -1.65)mmol/L and 2.57(2.12 -3.01)mmol/L(P <0.05).In women HUA group,the levels of blood uric acid,TG and LDL -L were 454.15(434.15 -480.78)μmol/L,2.14(1.47 -3.18)mmol/L and 2.96(2.52 -3.76)mmol/L,which were higher than those of normal uric acid group of 250.80(209.00 -299.80)μmol/L,1.53(1.10 -2.20)mmol/L and 2.87(2.40 -3.33)mmol/L(P <0.05).Logistic multi -factor regression analysis showed that TG was an independ-ent risk factor for hyperuricemia,and that HDL -L and gender were protective factors.Conclusion Hyperuricemia is closely associated with blood lipid,especially with TG and HDL -L,so we could screening HUA by blood lipid,which can reduce the occurrence of cardiovascular disease effectively.

Objectives To detect the carotid artery intima-media thickness (CIMT)with color Doppler ultrasound and to investigate the relationship between CIMT and new ischemic cerebrovascular disease. Methods From May 2012 to October 2013,the cluster random sampling method was used to consecutively enroll 4 412 60 -70 year old residences in Reqiu City for prospective study,including face to face health questionnaire survey,human body measurement,laboratory test,and neck vascular color Doppler ultrasonography. According to whether having new ischemic cerebrovascular disease,the patients who had ischemic cerebrovascular disease in 2013 were divided into either a case group (n = 251)or a control group (n =4 161). The single factor analysis,such as baseline data and CIMT levels in both groups were compared, and the related risk factors for ischemic cerebrovascular disease were analyzed. Results (1)The detection rates of hypertension,cerebrovascular disease,taking antiplatelet agents,carotid artery plaque of the case group were higher than those of the control group (62. 2% [n = 156]vs. 44. 2% [n = 1 838],45. 0%[n = 113]vs. 14. 9% [n = 622],55. 0% [n = 138]vs. 40. 0% [n = 1 663],and 65. 7% [n = 165]vs. 54. 5% [n = 2 266],all P < 0. 05). The systolic blood pressure,insulin,and CIMT levels were higher than those of the control group (158 [141,177]mmHg vs. 152 [137,169]mmHg,8. 07 [4. 77,12. 48]μU/ L vs. 6. 93 [4. 27,11. 60]μU/ L,0. 950 [0. 900,1. 000]mm vs. 0. 925 [0. 900,1. 000]mm,all P <0. 05). The cholesterol level was lower than that of the control group (4. 59 [4. 17,5. 26]mmol/ L vs. 4. 78 [4. 20,5. 36]mmol/ L,P < 0. 05). There were significant differences between the 2 groups. (2)Multivari-ate logistic regression analysis showed that histories of hypertension and cerebral vascular disease and CIMT thickening were the independent risk factors for new ischemic cerebrovascular disease (hypertension:OR, 1. 534,95% CI 1. 166 -2. 017,P = 0. 002;history of cerebral vascular disease:OR,3. 940,95% CI 2. 997 -5.180,P =0.000;and CIMT thickening:OR,12.122,95%CI 2. 327 -63. 163,P =0. 003). Conclusion CIMT, hypertension,and cerebrovascular disease are the independent risk factors for ischemic cerebrovascular disease in Renqiu City,and the monitoring of CIMT is very important.

Objective To investigate the relationship between snoring and newly-diagnosed type 2 diabetes mellitus among elderly urban and rural residents in Renqiu of Hebei province.Methods By random clustered sam-pling inspection,the residents aged 60 to 70 years old were selected in the study,the questionnaire investigation by an-thropometric measurements and laboratory tests were performed in 5 010 elderly people.Screen for 3 604 people who had no previous history of diabetes and currently not to control blood sugar by diet,exercise,medication.The average age was (64.32 ±3.06)years,including 1 608 male(44.6%) and 1 996 female cases(55.4%),snorers 994 cases (27.6%),non-snorers 2 610 cases(72.4%).The patients were followed up for one year.The correlation between snoring and newly-diagnosed type 2 diabetes mellitus was analyzed.Results There were 217 cases(6.0%) of new-ly-diagnosed type 2 diabetes mellitus,which accounted for 79 cases of snoring(36.4%),3 387 cases of non-dia-betic group,which accounted for 915 cases of snoring(27.0%),the difference between the two groups was significant (χ2 =9.003,P<0.05).Took the newly-diagnosed type 2 diabetes mellitus as the dependent variable,univariate analysis showed that gender(OR=0.479,95% CI:0.639~0.852),history of hypertension(OR=1.463,95% CI:1.111~1.927),family history of diabetes(OR=1.768,95% CI:1.259~2.183),history of stroke or TIA(OR=1.549,95%CI:1.106~2.168),central obesity(OR=1.658,95% CI:1.016 ~1.448),BMI≥28kg/m2 (OR=1.063,95% CI:1.025 ~1.102),fasting glucose(OR=2.065,95% CI:1.854 ~2.299),fasting insulin levels (OR=1.021,95%CI:1.008 ~1.035),cholesterol(OR=1.216,95% CI:1.051 ~1.407),triglycerides(OR=1.188,95%CI:1.089~1.296),snoring(OR=1.547,95% CI:1.161 ~2.060) were related with newly-diag-nosed type 2 diabetes mellitus.Multivariate logistic regression analysis showed that gender(OR=0.595,95% CI:0.368~0.963),history of stroke or TIA(OR=1.586,95%CI:1.085~2.318),fasting glucose(OR=2.059,95%CI:1.833~2.312),snoring(OR=1.592,95% CI:1.089~2.328) were independent risk factor for newly-diag-nosed type 2 diabetes mellitus.Conclusion People aged 60 to 70 in Renqiu suffered newly-diagnosed type 2 diabe-tes mellitus population prevalence of snoring, snoring is closely related to the occurrence and development of type 2 diabetes,type 2 diabetes is increased independent risk factor.Positive and effective screening and control on snoring can effectively reduce the incidence of type 2 diabetes.

Objective To explore the method and therapeutic effect of high-frequency ultrasound guided paracentesis for the treatment of perirectal abscess.Methods Thirty-three patients with perirectal abscess were treated under the guidance of high-frequency ultrasound.Results All 33 patients were treated successfully,the curative rate was 100%.Six patients were treated 3 times,6 patients were treated twice and 21 patients were treated once.Conclusion High-frequency ultrasound guided paracentesis for the treatment of perirectal abscess has the superiorities of little distress,rapid therapeutic effect without complications,worthy Of further clinical application.

Objective To investigate waist-to-height ratio(WHtR) and body mass index(BMI) for the screening and prediction of metabolic syndrome and explore the best indicator for predicting metabolic syndrome(MS) in the elderly.Methods A cluster random sampling method was used.5 010 cases aged 60-70 years old of Renqiu permanent residents were selected as a screening subjects.The face to face health questionnaires,anthropometric measurements,and laboratory testing were conducted.Receiver operatiug characteristic (ROC) was used to analyze and calculate the area under the curve(AUC).Results WHtR predict the best point of tangency of MS were 0.54 (men),0.5 5 (women),BMI predict the best point of tangency of MS were 25.25kg/m2 (men),2 5.0 5 kg/m2 (women).In the same gender,the contrast of WHtR and BMI in predicts MS area under the curve,WHtR area under the curve of the larger,WHtR was higher than BMI,WHtR was a better indicator in predicted of MS.Conclusion WHtR and BMI have important roles in the screening and prediction of MS,and WHtR seems to be the best parameter in the screening and prediction of MS in the elderly.

OBJECTIVE To systematically assess the efficacy and safety of acupuncture in treating acute tonsillitis,providing a reference for clinical decision-making.METHODS We searched PubMed,CENTRAL,Embase,Web of Science,China National Knowledge Infrastruc-ture,China Biomedical,clinical research registra-tion platforms,grey literature,and the reference lists of the selected studies from inception to Oct.30,2022.The risk of bias assessment used Rev-Man.Meta-analysis was performed using STATA with Hedges' g value.In addition,we performed subgroup analysis,meta-regression,and publica-tion bias detection with Harbord's and Egger's tests.RESULTS We included 19 randomized controlled trials comprising 1701 patients,of which 1 study was assessed high risk of bias.The primary outcome,the response rate,revealed that acupuncture was more effective than antibi-otics.The secondary outcomes showed that the difference in the reduction of the VAS scores,sore throat time,and white blood cell counts was statistically significant with acupuncture compared to antibiotics.However,the difference in modulat-ing neutrophil percentage and C-reactive protein was not statistically significant.Besides,acupunc-ture treatments showed a lower incidence of adverse events than antibiotics.CONCLUSION Acupuncture therapy on acute tonsillitis is safe,and the response rate is superior to antibiotics.For alleviating sore throat symptoms,shortening sore throat time,and improving immune inflam-mation index,acupuncture has positive signi fi cance.Nevertheless,because of the limitations of this study,our conclusions should be inter-preted with caution.Future efforts still need more high-quality trials to improve the methodology and reporting quality.

To explore the effect of Ginkgo biloba extract (GBE) on anticoagulation of 4 new oral anticoagulants (NOACs), dabigatran, apixaban, rivaroxaban and edoxaban in vitro, thrombin time (TT), prothrombin time (PT), activated partial thrombin time (APTT) and the activity of coagulation factor Xa (FXa) of rat plasma were measured at different concentrations of NOACs, GBE or NOACs combined with GBE, respectively. The results showed that TT, PT and APTT were prolonged with the increase of NOACs concentration in the range of 0-500 ng/mL; that except for TT of rivaroxaban, other results showed a good linear correlation with NOACs concentration (r2= 0.78-0.98); and that FXa activity decreased with increased concentration of FXa inhibitors (apixaban, rivaroxaban and edoxaban), with a good linear correlation with concentration of FXa inhibitors in the range of 0-250 ng/mL (r2= 0.85-0.94). GBE had no significant effect on TT, PT and APTT (P>0.05) in the concentration range of 0-500 μg/mL, but FXa activity had a positive linear correlation with GBE concentration (r2= 0.840 4). TT was prolonged with increasing GBE concentration when dabigatran was combined with GBE. When the above FXa inhibitors were combined with GBE, TT shortened and FXa activity increased with rising GBE concentration. There were no significant changes in PT and APTT (P>0.05) when NOACs were combined with GBE. The study results suggest that GBE may synergize with the anticoagulant activity of dabigatran and antagonize the anticoagulant activity of FXa inhibitors, possibly due to its role in increasing FXa activity.

Objective:To observe the epidemiological characteristics and transmission chain of COVID-19 in Harbin, and to provide epidemiological evidence for improving the COVID-19 preventive measures and optimizing prevention and control strategies.Methods:The epidemic situation of COVID-19 in Harbin in January 2021 was analyzed by using the Infectious Disease Report Information Management System and the Public Health Emergency Management Information System of the China Disease Prevention and Control Information System, the epidemic situation information publicly released by the Heilongjiang Provincial Health Commission, and the epidemiological report of Heilongjiang Province Certer for Disease Control and Prevention and Harbin Center for Disease Control and Prevention. The main transmission chains were sorted out through combination of epidemiological field investigation, serological testing, gene sequencing, big data and other means.Results:From January 12 to February 4, 2021, 295 cases of COVID-19 infection (including confirmed cases and asymptomatic infections) were reported in Harbin, which affected 6 districts of Harbin and were concentrated in 41 of the 274 townships in the city. The sex ratio of male to female was 1.00∶1.12 (139∶156); the age ranged from 1 to 86 years old, and the median age was 45 years old. The proportion of confirmed cases and asymptomatic infection was 1.00 ∶ 1.02 (146 ∶ 149), and there was a significant difference in the distribution of different ages between them ( P = 0.042). The cases were mainly found through the health screening of the centralized isolation personnel (178 cases, 60.3%). Other detection methods included active screening (87 cases, 29.5%), screening of the home isolation personnel (26 cases, 8.8%), and medical treatment in medical institutions (4 cases, 1.4%). The main transmission chain of the outbreak was the case associated with a food processing enterprise, with a total of 259 cases, accounting for 87.8% of the total cases. The gene sequencing results showed that the case sequence was homologous with that of Wangkui County, Suihua City, Heilongjiang Province. Conclusions:A food processing enterprise is involved in the main transmission chain, which indicates that the epidemic prevention and control measures needs to be further optimized. Specifically, the supervision and management of food processing enterprises, cold chain storage companies and other enterprises should be strengthened. High attention should be paid to the hidden dangers of COVID-19 in large and medium sized enterprises with hermetic space in Harbin.