Objective:To comparatively the efficacy of the combined external fixator and the Ilizarov in the treatment of open tibia-fibula fractures and their influence on postoperative infection.Methods:A total of 215 patients with open tibio-fibula fractures diagnosed and treated at Tianjin Medical University General Hospital Airport Site from January 2021 to January 2024 were retrospectively selected as the research subjects. They were divided into the observation group (110 cases, using the combined external frame) and the control group (105 cases, using theIlizarov) according to the types of external fixators adopted. The clinical efficacy, bone healing condition, X-ray callus score, and serological indicators, including the bone morphogenetic protein (BMP-2), vascular endothelial growth factor (VEGF), osteocalcin (OC), C-reactive protein (CRP) in the two groups were compared. The America Orthopedic Foot & Ankle Society(AOFAS) score, Hospital for Special Surgery (HSS) score, and Health Survey Scale (SF-36) score were applied to evaluate the recovery of patients, and the postoperative infection conditions in the two groups were compared.Results:At 12 months after the operation, the excellent and good rate of clinical efficacy in the observation group was higher than that in the control group:90.00%(99/110) vs. 80.00%(84/105), there was statistical difference ( χ2 = 4.24, P<0.05). The complete weight-bearing time, swelling elimination time, bone healing time and postoperative hospital stay in the observation group were shorter than those in the control group:(144.73 ± 15.48) d vs. (152.12 ± 15.55) d, (11.25 ± 1.34) d vs. (13.18 ± 1.37) d, (123.01 ± 12.53) d vs. (136.38 ± 13.45) d, (30.15 ± 3.24) d vs. (31.47 ± 3.48) d, there were statistical differences ( P<0.01). The X-ray callus scores in the observation group at 1 week and 1, 3 and 6 months after the operation were higher than those in the control group: (1.37 ± 0.15) scores vs. (1.28 ± 0.14) scores, (7.65 ± 0.83) scores vs. (5.64 ± 0.75) scores,(12.34 ± 1.25) scores vs. (10.78 ± 1.16) scores,(14.52 ± 1.56) scores vs.(12.11 ± 1.35) scores, there were statistical differences ( P<0.01). Six months after the operation, the levels of BMP-2, VEGF and OC in the observation group were higher than those in the control group: (84.23 ± 8.51) ng/L vs. (76.79 ± 7.82) ng/L, (17.26 ± 1.83) ng/L vs. (15.34 ± 1.67) ng/L, (18.34 ± 1.92) μg/L vs. (6.48 ± 1.75) μg/L; while CRP was lower than that in the control group: (6.49 ± 0.76) mg/L vs. (7.13 ± 0.78) mg/L; there were statistical differences ( P<0.01). The scores of AOFAS, HSS and SF-36 in the observation group at 6 months after the operation were higher than those in the control group: (76.34 ± 7.85) scores vs. (70.11 ± 7.49) scores,(70.12 ± 7.63) scores vs. (67.77 ± 6.68) scores, (93.57 ± 10.34) scores vs. (85.73 ± 8.65) scores, there were statistical differences ( P<0.01 or <0.05). The patients were followed up for 12 months after the operation. There was no statistical difference in the incidence of complications between the two groups ( P>0.05). Conclusions:Compared with the Ilizarov, the combined external fixator has a better therapeutic effect in the treatment of open tibia-fibula fractures. It can promote the healing of bone wounds, improve joint function and quality of life, and has good safety.

Objective:To comparatively the efficacy of the combined external fixator and the Ilizarov in the treatment of open tibia-fibula fractures and their influence on postoperative infection.Methods:A total of 215 patients with open tibio-fibula fractures diagnosed and treated at Tianjin Medical University General Hospital Airport Site from January 2021 to January 2024 were retrospectively selected as the research subjects. They were divided into the observation group (110 cases, using the combined external frame) and the control group (105 cases, using theIlizarov) according to the types of external fixators adopted. The clinical efficacy, bone healing condition, X-ray callus score, and serological indicators, including the bone morphogenetic protein (BMP-2), vascular endothelial growth factor (VEGF), osteocalcin (OC), C-reactive protein (CRP) in the two groups were compared. The America Orthopedic Foot & Ankle Society(AOFAS) score, Hospital for Special Surgery (HSS) score, and Health Survey Scale (SF-36) score were applied to evaluate the recovery of patients, and the postoperative infection conditions in the two groups were compared.Results:At 12 months after the operation, the excellent and good rate of clinical efficacy in the observation group was higher than that in the control group:90.00%(99/110) vs. 80.00%(84/105), there was statistical difference ( χ2 = 4.24, P<0.05). The complete weight-bearing time, swelling elimination time, bone healing time and postoperative hospital stay in the observation group were shorter than those in the control group:(144.73 ± 15.48) d vs. (152.12 ± 15.55) d, (11.25 ± 1.34) d vs. (13.18 ± 1.37) d, (123.01 ± 12.53) d vs. (136.38 ± 13.45) d, (30.15 ± 3.24) d vs. (31.47 ± 3.48) d, there were statistical differences ( P<0.01). The X-ray callus scores in the observation group at 1 week and 1, 3 and 6 months after the operation were higher than those in the control group: (1.37 ± 0.15) scores vs. (1.28 ± 0.14) scores, (7.65 ± 0.83) scores vs. (5.64 ± 0.75) scores,(12.34 ± 1.25) scores vs. (10.78 ± 1.16) scores,(14.52 ± 1.56) scores vs.(12.11 ± 1.35) scores, there were statistical differences ( P<0.01). Six months after the operation, the levels of BMP-2, VEGF and OC in the observation group were higher than those in the control group: (84.23 ± 8.51) ng/L vs. (76.79 ± 7.82) ng/L, (17.26 ± 1.83) ng/L vs. (15.34 ± 1.67) ng/L, (18.34 ± 1.92) μg/L vs. (6.48 ± 1.75) μg/L; while CRP was lower than that in the control group: (6.49 ± 0.76) mg/L vs. (7.13 ± 0.78) mg/L; there were statistical differences ( P<0.01). The scores of AOFAS, HSS and SF-36 in the observation group at 6 months after the operation were higher than those in the control group: (76.34 ± 7.85) scores vs. (70.11 ± 7.49) scores,(70.12 ± 7.63) scores vs. (67.77 ± 6.68) scores, (93.57 ± 10.34) scores vs. (85.73 ± 8.65) scores, there were statistical differences ( P<0.01 or <0.05). The patients were followed up for 12 months after the operation. There was no statistical difference in the incidence of complications between the two groups ( P>0.05). Conclusions:Compared with the Ilizarov, the combined external fixator has a better therapeutic effect in the treatment of open tibia-fibula fractures. It can promote the healing of bone wounds, improve joint function and quality of life, and has good safety.

Objective: To explore the relationship between the ratio of dietary vitamin A (VitA) to body weight and hypertension among children, so as to provide a reference for blood pressure control through dietary nutritional interventions and childhood hypertension prevention. Methods: Utilizing the baseline survey and followup sample data from the Healthy Children Cohort established in urban and rural areas of Chongqing from 2014 to 2019, structured quantitative dietary questionnaire and selfdesigned questionnaire were used to investigate the information of dietary intake and socioeconomic characteristics of 15 279 children, as well as blood pressure, height, weight measurement. The ratio of dietary VitA to body weight was divided into four groups based on quartiles [≤P25(Q1), >P25~P50(Q2), >P50~P75(Q3), >P75(Q4)]. Generalized linear regression models and Logistic regression models were used to analyze the correlation between ratio of dietary VitA to body weight with blood pressure levels and prevalence of hypertension. Results: The results of the 2014 baseline survey indicated that, after adjusting for confounding factors such as demographic indicators and nutritional intake, significant differences were observed in systolic blood pressure (SBP), diastolic blood pressure (DBP), and mean arterial pressure (MAP) among different groups categorized by the ratio of dietary VitA to body weight (F=157.57, 44.71, 95.92, P<0.01). The baseline ratio of dietary VitA to body weight in children exhibited a negative correlation with DBP, SBP and MAP at baseline and in 2019[baseline: β(95%CI)=-0.65(-0.89--0.42), -0.22(-0.42--0.01), -0.36(-0.56--0.16); 2019: β(95%CI)=-0.77(-1.34--0.19), -0.62(-1.21--0.02), -0.77(-1.34--0.19), P＜0.05]. Compared to Q1 group, the risk of hypertension decreased among children in Q4 at baseline and followup in 2019 [OR(95%CI)=0.63(0.49-0.81), 0.18(0.08-0.42), P<0.01]. Conclusions The ratio of dietary VitA to body weight is significantly negatively correlated with blood pressure levels among children, and dietary VitA deficiency is an independent risk factor for hypertension among children. Measures should be taken to actively adjust childrens dietary nutrition and reduce the risk of childhood hypertension.

The surveillance data of new cases of acute myocardial infarction (AMI) from January 1, 2013, to December 31, 2021, in Tengzhou City, Shandong Province, were used to analyze the incidence rate of AMI and its change trend among residents. The age and gender standardized incidence rate was calculated based on the 7th National Population Census 2020. The Cochran-Armitage trend test was used to analyze the trend of onset time and age. From 2013 to 2021, the crude and standardized incidence rate of total AMI in Tengzhou City declined from 130.07/100 000 and 161.12/100 000 to 76.15/100 000 and 72.77/100 000 ( Z=-13.785 and -20.822, both P<0.001). The crude and standardized incidence rates of males were higher than those of females. In 2016, males aged 45-54 years old and females aged 35-64 years old increased by 33.33%, 103.65%, 106.30%, and 95.75% compared to 2015, and the differences were statistically significant ( χ2=6.512, 4.965, 25.115, and 46.004, all P<0.05). The incidence rate of AMI in men aged<35 and 35-44 years old had an upward trend. From 2013 to 2021, the incidence rate of AMI decreased by 55.15% in urban areas and 36.59% in rural areas ( Z=-8.529 and -11.235, both P<0.001).

The surveillance data of new cases of acute myocardial infarction (AMI) from January 1, 2013, to December 31, 2021, in Tengzhou City, Shandong Province, were used to analyze the incidence rate of AMI and its change trend among residents. The age and gender standardized incidence rate was calculated based on the 7th National Population Census 2020. The Cochran-Armitage trend test was used to analyze the trend of onset time and age. From 2013 to 2021, the crude and standardized incidence rate of total AMI in Tengzhou City declined from 130.07/100 000 and 161.12/100 000 to 76.15/100 000 and 72.77/100 000 ( Z=-13.785 and -20.822, both P<0.001). The crude and standardized incidence rates of males were higher than those of females. In 2016, males aged 45-54 years old and females aged 35-64 years old increased by 33.33%, 103.65%, 106.30%, and 95.75% compared to 2015, and the differences were statistically significant ( χ2=6.512, 4.965, 25.115, and 46.004, all P<0.05). The incidence rate of AMI in men aged<35 and 35-44 years old had an upward trend. From 2013 to 2021, the incidence rate of AMI decreased by 55.15% in urban areas and 36.59% in rural areas ( Z=-8.529 and -11.235, both P<0.001).

Objective Analyze the temporal trend of ischemic stroke(IS)mortality among the residents of Tengzhou City of Shandong Province during the period of hypertension control from 2013 to 2021.Methods On January 1,2013,Tengzhou City,Shandong Province,began its hypertension control program.The IS mortality rate was calculated using the mortality data from January 1,2013 to December 31,2021,and analyzed for its time trend among residents with different characteristics.The registered population was derived from the Public Security Bureau of Tengzhou City,Shandong Province,and the age and sex standardized mortality rate was calculated using the data of China's 7th population census in 2020.The Chi-square test was used to compare the differences in mortality rate,and Cochran-Armitage trend test was used to compare the time trend and age trend of mortality rate.Results The overall crude and standardized mortality rates of IS in Tengzhou showed a temporal trend from 2013 to 2021(Z values were 12.647,7.305,respectively;all P＜0.001),and decreased by 23.77％and 30.99％(Z values were-7.393,-9.975,respectively;all P＜0.001)respectively in 2021 compared with 2019.The crude mortality rate of IS in male increased by 13.27％in 2019 compared with 2017,while the crude and standardized mortality rate in female decreased by 16.39％and 19.49％in 2018 compared with 2017,respectively,with statistical significance(x2 values were 7.160,9.789,and 15.109,respectively;all P＜0.05).Except the crude mortality rates in 2013 and 2015,the crude mortality rates and standardized mortality rates for males in other years were all higher than those for females,with statistically significant differences(x2 values:25.816-124.040,all P＜0.001).The crude mortality rate for IS increased with age in all years(Z values:42.604-61.025,all P＜0.001).The proportion of IS deaths among those aged≥65 was 85.85％.The overall crude mortality rates of the age group of male 45-54 years old showed a temporal trend from 2013 to 2021(Z=3.035,P＜0.01),while females in the same age group did not show a temporal trend(P＞0.05).The IS mortality rate in urban areas decreased from 62.61 per 100 000 in 2013 to 54.00 per 100 000 in 2021(Z=-2.097,P＜0.05).The rural areas increased by 213.15％in 2019 compared with 2013 and decreased by 22.75％in 2021 compared with 2019(Z values were 19.074,-6.390,respectively;all P＜0.001).Conclusions The IS mortality rate in Tengzhou City showed a decreasing trend in urban areas from 2013 to 2021,and a decreasing trend in rural areas after 2019.Compared to females,there is a trend of younger mortality among males in the age range of 45-54.Males and rural IS patients should be given special attention.

Objective:To analyze the trends of coronary heart disease mortality in Tengzhou city of Shandong province from 2013 to 2021.Methods:The data of coronary heart disease (ICD-10: I20-I25) from January 2013 to December 2021 were obtained from the Chronic Disease Surveillance Information System-Coronary Heart Disease Management Module of Shandong province; the population data were provided by Tengzhou Public Security Bureau. The 95% confidence interval ( CI) of the rate was calculated using the binomial exact method. The age-standardized mortality rate (ASMR) was calculated based on 2020 National Population Census. The trends of mortality rate were analyzed using the Cochran-Armitage trend test. Results:During 2013 to 2021, there were 20 667 coronary heart disease deaths in Tengzhou city, with an average of 2 296 cases per year. The male-to-female ratio was 1.09∶1, and 80.98% (16 736/20 667) of the death cases were aged 65 years or older. The crude mortality rate and ASMR of coronary heart disease were 131.84/10 5 and 168.22/10 5 in 2013, respectively. The crude mortality rate increased by 13.67% from 2013 to 2021 ( P<0.001) with an average annual increase of 1.59%; while the ASMR decreased by 18.65% from 2013 to 2021 ( P<0.05) with an average annual decease of 2.34%. The crude mortality rate of coronary heart disease in men and women showed an upward trend, with the difference in the increase for women being statistically significant ( P<0.01); while the ASMR both in men and women showed a downward trend ( P<0.001). The crude death rates from 2013 to 2021 in age groups of 65 or older for men and women decreased by 22.40% and 19.73%, respectively (both P<0.001); while the crude death rate for age groups of 44 or younger in men showed an upward trend ( P<0.05). The crude death rate among urban residents decreased by 5.22% from 2013 to 2021 with an annual decrease of 0.67% ( P>0.05); while the crude death rate among rural residents increased by 19.29% with an annual increase of 2.18% ( P<0.001). The overall crude death rate among urban residents was higher than that among rural residents (all P<0.05). Conclusions:From 2013 to 2021, the crude mortality rate of coronary heart disease in Tengzhou city of Shandong province shows an increasing trend while the age-standardized mortality rate shows a decreasing trend. The crude mortality rate of coronary heart disease in people aged 65 and above shows a decreasing trend. In addition, the change trends are different between women and men, and between urban and rural areas.

Objective:To study the multi-locus sequence typing (MLST) gene characteristics of Brucella isolates in Guizhou Province. Methods:Brucella strains, which were isolated from 2017 to 2021 in Guizhou Province (preserved in the Bacterial and Viral Seed Bank of Guizhou Center for Disease Control and Prevention) were identified Brucella and species/types by BCSP31-PCR and AMOS-PCR methods, respectively. MLST method was used for genotyping, and Biometrics 8.0 software was used for cluster analysis of the typing results. Results:A total of 32 strains of Brucella were isolated in Guizhou Province and identified as Brucella melitensis ( B.melitensis) by BCSP31-PCR and AMOS-PCR methods. These strains were classified into 2 ST types (ST8 and ST39) by MLST method, with 28 strains of ST8 type(87.5%) and 4 strains of ST39 type (12.5%). The 28 strains of ST8 type were distributed in 7 cities (prefectures) of Guizhou Province, while the 4 strains of ST39 type were only found in Qianxinan Buyi and Miao Autonomous Prefecture. The cluster analysis results showed that ST8 and ST39 types strains were clustered in a group with the reference strain of B.melitensis, and there was only one nucleotide site difference between ST39 and ST8 types in the glk gene, indicating a close genetic relationship. Conclusions:B.melitensis is the main pathogen of the brucellosis epidemic in Guizhou Province in recent years. ST8 is the dominant MLST genotype in Guizhou Province.

Objective:To evaluate the effect of irisin on the alveolar macrophage polarization in a rat model of ventilator-induced lung injury (VILI).Methods:Thirty SPF healthy adult male Sprague-Dawley rats, aged 6-8 weeks, weighing 200-250 g, were divided into 3 groups ( n=10 each) using a random number table method: control group (group C), VILI group (group V) and irisin group (group I). The rats were mechanically ventilation (tidal volume 20 ml/kg, respiratory rate 80 times/min, inhaled oxygen concentration 21%, inspiratory/expiratory ratio 1∶2, positive end-expiratory pressure 0) for 4 h to develop VILI model.Group C kept spontaneous breathing for 4 h. Irisin 1 μg/kg was injected via the tail vein at 30 min before tracheal intubation in group I, while the equal volume of normal saline was given instead in the other groups.The rats were sacrificed at 4 h of mechanical ventilation, the lung tissues were removed for examination of pathological changes which were scored and for determination of wet to dry weight ratio (W/D ratio), and bronchoalveolar lavage fluid (BALF) was collected for determination of concentrations of interleukin-6 (IL-6), tumor necrosis factor-alpha (TNF-α) and IL-10 (by enzyme-linked immunosorbent assay), expression of inducible nitric oxide synthase (iNOS), argininase 1 (Arg-1), and phosphorylated nuclear factor kappa B (p-NF-κB) p65 and p-NF-κB p50 in alveolar macrophages (by Western blot), and percentage of M1 and M2 alveolar macrophages and M1/M2 ratio (by flow cytometry). Results:Compared with group C, the W/D ratio, lung injury score, and concentrations of IL-6, TNF-α and IL-10 in BALF were significantly increased, the expression of iNOS, Arg-1, p-NF-κB p65 and p-NF-κB p50 was up-regulated, and the percentage of M1 and M2 alveolar macrophages and M1/M2 ratio were increased in group V and group I ( P<0.05). Compared with group V, the W/D ratio, lung injury score, and concentrations of IL-6 and TNF-α in BALF were significantly decreased, the expression of iNOS and p-NF-κB p65 was down-regulated, the percentage of M1 alveolar macrophages and M1/M2 ratio were decreased ( P<0.05), and no significant change was found in levels of IL-10 and Arg-1 in BALF, percentage of M2 alveolar macrophages and expression of p-NF-κB p50 in group I ( P>0.05). Conclusions:The mechanism by which irisin reduces VILI may be related to inhibition of NF-κB signaling pathway activation and reduction of alveolar macrophage polarization to M1 phenotype in rats.

Objective:To optimize the best molding process of Jinpuju Qingrelishi Granules.Methods:Based on the single factor test, the relative density of clear ointment and the amount of diluent (dextrin∶lactose=2∶1) are used as investigating factors, and the overall evaluation of the molding rate and angle of repose overall desirability (OD) is used as the evaluation index. The effect surface method is used to optimize the best molding process of Jinpuju Qingrelishi Granules.Results:The best molding process conditions: the relative density of the clear paste is 1.20 (60 ℃) and the amount of diluent is 3 times that of the clear paste. After mixing the clear paste and diluent, make soft material, pass through a 14-mesh sieve to granulate, dry in an oven (55 ℃) for 1 hour, and sizing to obtain. The molding rates of the three batches of verification test granules were 93.73%, 93.03%, 95.59%, respectively, the predicted OD value was 0.928, the verification value was 0.936, and the deviation from the predicted value was -0.86%.Conclusion:The molding process of this experiment is stable and reliable, with good repeatability, which can provide a reference for the follow-up research of Jinpuju Qingrelishi Granules.