BACKGROUND:Primary vascular endothelial cels are mostly harvested through aorta endothelial cel cultures and micro-artery endothelial cel cultures using enzyme digestion and tissue adhesion methods, and the quality and purity of harvested cels cannot meet the need for current scientific research.
OBJECTIVE:To investigate an improved extraction of primary vascular endothelial cels and the relevant identification method.
METHODS: A segment of rabbit aorta was cut to culture vascular endothelial cels using the improved extraction method in group A or using adhesion method in group B. In the group A, the vascular intima was striped out with microsurgical instruments, and digested enzymaticaly to acquire single primary cels folowed by culture in endothelial cel culture medium. In the group B, the whole vascular intima was adhered to the culture dish that was incubated in a 5%CO2, 37℃ incubator for 1 hour. Cel pelets in the two groups were culturedin vitro. Cel morphology was observed using a microscope; immunohistochemical staining was used to detect CD31, VIII factor and Vimentin protein for identification of vascular endothelial cels.
RESULTS AND CONCLUSION:The purity and number of vascular endothelial cels extracted by the improved method were higher than those by the adhesion method. Immunohistochemical findings showed positive expression of CD31 and VIII factor, but negative expression of Vimentin. These findings indicate that the improved extraction method can obtain more vascular endothelial cels with higher purity, which is of strong operability and practicality.

Objective To study the prevalence of hypertension in She Chinese population of Fujian province and its epidemiological characteristics. Methods Using random sampling method to take advantage of number table, we select a sample of 5350 people who were conducted a questionnaire survey and measured weight, height, blood pressure and other indicators. Results The prevalence of hypertension in She Chinese population of Fujian province was 36. 09%, including undiagnosed number of 1374 cases. The main risk factors of hypertension were age,the level of education, BMI,saltintake. Smoking was not significant with hypertension. The prevalence rate of hypertension among people over 60 years was 63.10%, people comsumed above 8 grams of salt per day had higher pervalence than that in the goup which comsumed below 6 grams or between 6 grams to 8 grams of salt per day. Conclusions The prevalence of hypertension in She had grown rapidly. The She Chinese population should change their lifestyle and hypertension education should perform in this population.

Objective To analyze medication rules of traditional Chinese medicine in the treat-ment of thyroid nodules based on real-world data mining technology.Methods Chinese medicine prescriptions for patients with thyroid nodules as clinical first diagnosis in the Department of Thyroid and Breast Surgery in Qingdao Hospital of Traditional Chinese Medicine from August 2018 to August 2023 were collected,and the Traditional Chinese Medicine Inheritance Assistant Platform(V3.0)was used to analyze the medication rules.Results A total of 1 206 traditional Chinese medicine pre-scriptions for the treatment of thyroid nodules were screened,involving 291 traditional Chinese medi-cines;the top five most frequently used drugs were Fritillaria thunbergii,Prunella vulgaris,Bupleu-rum chinense,Poria cocos,and Pinellia ternata;the main function of drugs were clearing heat,toni-fying deficiency,resolving phlegm,activating blood circulation,and regulating qi;the main property of the drugs was cold,the main tastes of drugs were bitter,sweet and spicy,and the meridians in-volved were mainly the lung,liver and spleen meridians;association rule analysis identified 17 high-frequency drug combinations,with Fritillaria thunbergii-Prunella vulgaris as the most frequently oc-curring drug pair;among the 16 association rules,Radix Scrophulariae-Fritillaria thunbergii and Rhi-zoma Cyperi-Bupleurum chinense had the highest confidence level;clustering analysis found 6 core drug combinations.Conclusion The main idea of clinical treatment of thyroid nodules in traditional Chinese medicine is to resolve phlegm and reduce nodules,promote qi circulation and blood circulation,and nourish qi and blood;the common herbal combination of Fritillaria thunbergii and Prunella vul-garis is used to clear heat,resolve phlegm,and reduce nodules,and the basic formula for resolving scrofula is based on Xiaoluo Pills,which resolves phlegm,softens hardened nodules,and reduces nodules.

Objective To analyze medication rules of traditional Chinese medicine in the treat-ment of thyroid nodules based on real-world data mining technology.Methods Chinese medicine prescriptions for patients with thyroid nodules as clinical first diagnosis in the Department of Thyroid and Breast Surgery in Qingdao Hospital of Traditional Chinese Medicine from August 2018 to August 2023 were collected,and the Traditional Chinese Medicine Inheritance Assistant Platform(V3.0)was used to analyze the medication rules.Results A total of 1 206 traditional Chinese medicine pre-scriptions for the treatment of thyroid nodules were screened,involving 291 traditional Chinese medi-cines;the top five most frequently used drugs were Fritillaria thunbergii,Prunella vulgaris,Bupleu-rum chinense,Poria cocos,and Pinellia ternata;the main function of drugs were clearing heat,toni-fying deficiency,resolving phlegm,activating blood circulation,and regulating qi;the main property of the drugs was cold,the main tastes of drugs were bitter,sweet and spicy,and the meridians in-volved were mainly the lung,liver and spleen meridians;association rule analysis identified 17 high-frequency drug combinations,with Fritillaria thunbergii-Prunella vulgaris as the most frequently oc-curring drug pair;among the 16 association rules,Radix Scrophulariae-Fritillaria thunbergii and Rhi-zoma Cyperi-Bupleurum chinense had the highest confidence level;clustering analysis found 6 core drug combinations.Conclusion The main idea of clinical treatment of thyroid nodules in traditional Chinese medicine is to resolve phlegm and reduce nodules,promote qi circulation and blood circulation,and nourish qi and blood;the common herbal combination of Fritillaria thunbergii and Prunella vul-garis is used to clear heat,resolve phlegm,and reduce nodules,and the basic formula for resolving scrofula is based on Xiaoluo Pills,which resolves phlegm,softens hardened nodules,and reduces nodules.

Objective To investigating the microbial communities and physicochemical properties of soil and distribution of Oncomelania hupensis snails in marshlands along the Yangtze River basin at different types of land use, and to examine the effects of soil microorganisms and physicochemical properties on snail distribution, so as to provide insights into snail control and schistosomiasis prevention in marshland along the Yangtze River basin. Methods Marshlands with four types of land use were selected along the Yangtze River basin on April 2021, including poplar forest-crops integrated planting, reed areas, agricultural cultivation lands and ditches. The distribution of snails and physicochemical properties of soil were investigated in marshlands with different types of land use, and the V3 to V4 regions of the bacterial 16S ribosomal RNA (16S rRNA) gene, fungal internal transcribed spacer-1 (ITS1) gene and algal ribulose-bisphosphate carboxylase (rbcL) gene in soils were subjected to high-throughput sequencing. The occurrence of frames with living snails and density of living snails were compared in marshland with different types of land use. The associations of soil microorganisms and physicochemical properties with the density of living snails were examined using Pearson correlation analysis, and the contributions of soil microorganisms and physicochemical properties to the density of living snails were evaluated using variance partitioning analysis. Results In marshlands with four types of land use, the greatest occurrence of frames with living snails [(4.94 ± 2.14)%] and density of living snails [(0.070 ± 0.026) snails/0.1 m²] were seen in ditches, and the lowest were found in [(1.23 ± 1.23)%] agricultural cultivation lands [(0.016 ± 0.019) snails/0.1 m²]. A total of 2 phyla, 5 classes, 8 orders, 9 families and 11 genera of algae were detected in soils at four types of land use, with Chlorophyta as the dominant phylum and Pseudoneochloris as the dominant genus. A total of 44 phyla, 134 classes, 281 orders, 338 families and 516 genera of bacteria were detected in soils at four types of land use, with Proteobacteria and Acidobacteriota as the dominant phyla and uncultured Acidobacterium, MND1, Mitrospira, Haliangium and Sphingomonas as dominant genera. A total of 11 phyla, 41 classes, 108 orders, 223 families and 408 genera of fungi were detected in soils at four types of land use, with phyla Ascomycota, Basidiomycota and Mortierellomycota presenting high relative abundances and genera Cladorrhinum, Mortierella and Humicola presenting high relative abundances. Pearson correlation analysis revealed that the density of living snails correlated negatively with the relative abundance of Proteobacteria (r = −0.965, P < 0.05) and soil electronic conductivity (r = −0.962, P < 0.05) and positively with soil moisture (r = 0.951, P < 0.05). Variance partitioning analysis demonstrated that the physicochemical properties and microorganisms of soil contributed 69% and 10% to the density of living snails, respectively. Conclusion The diversity of microbial communities varies in soils at different types of land use in marshland along the Yangtze River basin, and the physicochemical properties and microorganisms of soils may affect the distribution of O. hupensis snails.