In this paper, vegetative( vip83 ) and crystal(cry1Ac10 and cry1Ca) insecticidal protein genes from Bacillus thuri ngiensis were simultaneously electrospored into the plasmid-free strain BMB17 1. By the means of the specific P CR detection, the recombinant strains BMB2830-171 contained cry 1Ac10 and vip83, and BMB2 882-171 had cry1Ca and vip83 , were obtained respectively. Under the control of r ecombinant strains with one gene, bioassay of the synergism between vegetative V ip83 and crystal Cry1Ac10( or Cry1Ca )insecticidal proteins to three important Lepidopteran pests were done. The results, by analysis of statistic bio-so ft, showed that the synergia relation of vegetative Vip83 and crystal Cry1Ac10 i nsecticidal protein toxic to Heliothis armigera wascounteracted, while Plu tella xylostella and Spodotera exigua unobservable. There was no synergis tic action between Vip83 and Cry1Ca insecticidal proteins with Spodotera exigu a as tested insect. Bu t their cooperation to Heliothis armigera was minus, and the counterpart to Plutella xylostella plus, whose cotoxicity factor is 32.6. The experiment of bi-g ene genetic stability also suggested that the synergia effection had certain molecu lar genetic stability in the same cell. This performance can be contributed to construct high-effect and wide-spectrum engineered strain.

Objective To investigate the mechanism of fluoroquinolone resistance in clinical isolates of Enterococcus faecium. Methods The MICs of six fluoroquinolones(norfloxacin,ciprofloxacin,ofloxacin,levofloxacin,gatifloxacin and moxifloxacin) against 35 clinical isolates of E.faecium from eight hospitals in Tianjin were determined by agar dilution method in the absence or presence of multidrug resistance efflux pump inhibitor reserpine.The quinolone-resistance determining region(QRDR)of parC and gyrA were amplified and sequenced.Results No less than twofold decrease in MIC values of the six fluoroquinolones in the presence of reserpine was observed in 35,29,1,0,6 and 2 of the 35 strains of E.faecium respectively.One fluoro- quinolone-susceptible isolate and five fluoroquinolone-resistant isolates were selected randomly to analyze the QRDR of parC and gyrA.All five fluoroquinolone-resistant isolates had single amino acid alteration in both GyrA and ParC.Ser-80 in ParC was substituted by lie(4 isolates)or Arg(1 isolates).Glu-87 in GyrA was replaced by Lys(2 isolates)or Gly(2 isolates). The other one had an Ser-83-to-Ile substitution.The one fluoroquinolone-suseeptible isolate had no alteration in the QRDR of either ParC or GyrA.Conclusions Both target alteration and active efflux are responsible for the resistance to fluoroquinolone in clinical isolates of E.faecium.

Objective To investigate the correlation between large platelet ratio (P-LCR) and stroke in patients with atrial fibrillation. Methods 152 consecutive patients with atrial fibrillation were selected and divided into two groups according to whether accompanying stoke or not. Clinical features of patients and blood test indicator P-LCR were analyzed by Logistic regression analysis. Results In total, 152 subjects, including 47 patients with stoke and 105 patients without stoke,were included in the study. Univariate analysis showed that the difference in age, diabetes, hypertension, lipid-lowering therapy and P-LCR between two groups was statistically significant (P < 0.05). Logistic regression analysis showed that age, diabetes and P-LCR were independent risk factors of stroke in patients with atrial fibrillation. Conclusions Age, diabetes and P-LCR are independent risk factors of stroke in patients with atrial fibrillation.

ObjectiveThe aim of this study was to evaluate and compare the surgical outcomes of endoscop ic and conventional open thyroidectomies in patients with thyroid disease.Methods116 patients with tyroid tumor were enrolled.56 patients underwent endoscopic thyroidectomy ( endoscopic group ),and 60 patients underwent conventional open thyroidectomy( conventional group).We analyzed the patients' clinic characteristics,surgical outcomes and complications between the two groups.ResultsThe blood loss was less in the endoscopic group than the open group[( 16.8 ± 9.6) ml vs ( 24.9 ± 14.2 ) ml,t =- 2.427,P ＜ 0.05].The degree of satisfaction for cosmetic outcome in endoscopy group( 96.4％ ) was higher than that in conventional group ( 16.7％ ) ( x2 =74.508,P ＜ 0.01 ).There was no significant difference in the operating time,volume of drainage and postoperative hospital stay between two groups,and there was no significant difference in the skin ecchymosis,redness and swelling and postoperative pain between two groups( all P ＞ 0.05).No severe postoperative complication was encountered,such as injuries of the re current or superior laryngeal nerve,parathyroid gland injury or massive hemorrhage.ConclusionEndoscopic thyroidectomy has less blood loss,mini-open and excellent cosmetic benefits compared with conventional open thyroidectomy.

OBJECTIVE To investigate the surgical management and its result of the cervical esophageal cancer.METHODS Forty six patients with cervical esophageal carcinoma who received surgical treatment in our hospital were included in this retrospective study.The removed hypopharynx and cervical esophagus were repaired with laryngotracheal flap in 5 cases,free myocutaneous flap in 4 patients and free jejunum in 2 patients.The inversion stripping esophagectomy without thoracotomy were performed in 35 patients.RESULTS During the early postoperative period,complications included recurrent laryngeal nerve paralysis in 2 cases,anastomotic fistula in 3 cases,anastomotic stenosis in 5 cases,Long-term postoperative gastro-esophageal reflux occurred in 19 cases.The 5-year survival rate was 28.7%. CONCLUSION The surgical treatment for cervical esophageal carcinoma should be decided by the location of the tumor,the extent of the cancer involved and lymph node metastasis.

Objective: This study aimed to explore the relationships between various exercise components (frequency, intensity, duration) and social anxiety. Methods: A sample of 844 college students in China participated in this study. The Physical Activity Rating Scale-3 assessed participants’ daily physical activity. Social anxiety levels were measured using the Liebowitz Social Anxiety Scale. A questionnaire was developed to collect demographic information and examine the relationships between exercise components and social anxiety levels. Results: One-way analysis of variance revealed significant differences in social anxiety levels across varying physical activity intensities. Specifically, students engaging in high levels of physical activity exhibited the lowest social anxiety. Post hoc analyses identified that exercise frequency F3 (p<0.01), exercise duration D5 (p<0.01), and exercise intensity I3 (p<0.01) were significantly associated with the lowest social anxiety levels. Among these components, regression analysis indicated that exercise duration (p<0.01) had the most substantial impact on social anxiety levels, followed by exercise frequency (p<0.05). In contrast, exercise intensity (p>0.05) did not significantly affect social anxiety levels. Conclusion The most influential factors associated with decreased social anxiety were: 1) moderate to high exercise intensity, 2) exercise duration of at least one hour, and 3) exercise frequency of at least 1–2 times per week. Among these factors, exercise duration and frequency demonstrated significantly stronger associations with reduced social anxiety. Therefore, it is advisable to prioritize exercise duration and frequency in physical activity programs for college students to reduce social anxiety and achieve more substantial outcomes.

Objective: This study aimed to explore the relationships between various exercise components (frequency, intensity, duration) and social anxiety. Methods: A sample of 844 college students in China participated in this study. The Physical Activity Rating Scale-3 assessed participants’ daily physical activity. Social anxiety levels were measured using the Liebowitz Social Anxiety Scale. A questionnaire was developed to collect demographic information and examine the relationships between exercise components and social anxiety levels. Results: One-way analysis of variance revealed significant differences in social anxiety levels across varying physical activity intensities. Specifically, students engaging in high levels of physical activity exhibited the lowest social anxiety. Post hoc analyses identified that exercise frequency F3 (p<0.01), exercise duration D5 (p<0.01), and exercise intensity I3 (p<0.01) were significantly associated with the lowest social anxiety levels. Among these components, regression analysis indicated that exercise duration (p<0.01) had the most substantial impact on social anxiety levels, followed by exercise frequency (p<0.05). In contrast, exercise intensity (p>0.05) did not significantly affect social anxiety levels. Conclusion The most influential factors associated with decreased social anxiety were: 1) moderate to high exercise intensity, 2) exercise duration of at least one hour, and 3) exercise frequency of at least 1–2 times per week. Among these factors, exercise duration and frequency demonstrated significantly stronger associations with reduced social anxiety. Therefore, it is advisable to prioritize exercise duration and frequency in physical activity programs for college students to reduce social anxiety and achieve more substantial outcomes.

Objective: This study aimed to explore the relationships between various exercise components (frequency, intensity, duration) and social anxiety. Methods: A sample of 844 college students in China participated in this study. The Physical Activity Rating Scale-3 assessed participants’ daily physical activity. Social anxiety levels were measured using the Liebowitz Social Anxiety Scale. A questionnaire was developed to collect demographic information and examine the relationships between exercise components and social anxiety levels. Results: One-way analysis of variance revealed significant differences in social anxiety levels across varying physical activity intensities. Specifically, students engaging in high levels of physical activity exhibited the lowest social anxiety. Post hoc analyses identified that exercise frequency F3 (p<0.01), exercise duration D5 (p<0.01), and exercise intensity I3 (p<0.01) were significantly associated with the lowest social anxiety levels. Among these components, regression analysis indicated that exercise duration (p<0.01) had the most substantial impact on social anxiety levels, followed by exercise frequency (p<0.05). In contrast, exercise intensity (p>0.05) did not significantly affect social anxiety levels. Conclusion The most influential factors associated with decreased social anxiety were: 1) moderate to high exercise intensity, 2) exercise duration of at least one hour, and 3) exercise frequency of at least 1–2 times per week. Among these factors, exercise duration and frequency demonstrated significantly stronger associations with reduced social anxiety. Therefore, it is advisable to prioritize exercise duration and frequency in physical activity programs for college students to reduce social anxiety and achieve more substantial outcomes.

Objective: This study aimed to explore the relationships between various exercise components (frequency, intensity, duration) and social anxiety. Methods: A sample of 844 college students in China participated in this study. The Physical Activity Rating Scale-3 assessed participants’ daily physical activity. Social anxiety levels were measured using the Liebowitz Social Anxiety Scale. A questionnaire was developed to collect demographic information and examine the relationships between exercise components and social anxiety levels. Results: One-way analysis of variance revealed significant differences in social anxiety levels across varying physical activity intensities. Specifically, students engaging in high levels of physical activity exhibited the lowest social anxiety. Post hoc analyses identified that exercise frequency F3 (p<0.01), exercise duration D5 (p<0.01), and exercise intensity I3 (p<0.01) were significantly associated with the lowest social anxiety levels. Among these components, regression analysis indicated that exercise duration (p<0.01) had the most substantial impact on social anxiety levels, followed by exercise frequency (p<0.05). In contrast, exercise intensity (p>0.05) did not significantly affect social anxiety levels. Conclusion The most influential factors associated with decreased social anxiety were: 1) moderate to high exercise intensity, 2) exercise duration of at least one hour, and 3) exercise frequency of at least 1–2 times per week. Among these factors, exercise duration and frequency demonstrated significantly stronger associations with reduced social anxiety. Therefore, it is advisable to prioritize exercise duration and frequency in physical activity programs for college students to reduce social anxiety and achieve more substantial outcomes.