OBJECTIVE To analyze the differences in chemical components of Gardenia jasminoides before and after processing with ginger， and to evaluate the quality differences among different producing areas. METHODS Ultra-high performance liquid chromatography-tandem time-of-flight mass spectrometry was used to analyze the compositional differences of G. jasminoides before and after processing with ginger. The water content， total ash， and ethanol-soluble extract content of ginger- processed G. jasminoides were determined according to the 2020 edition of Chinese Pharmacopoeia. High performance liquid chromatography was adopted to determine the contents of genipin gentiobioside， geniposide， crocin Ⅰ and crocin Ⅱ in ginger- processed G. jasminoides. RESULTS A total of 49 chemical components were identified from raw G. jasminoides and ginger- processed G. jasminoides， including 14 flavonoids， 15 iridoids， 10 organic acids， 2 alkaloids and 8 other compounds. Among them， 42 components were detected in raw G. jasminoides， 28 in ginger-processed G. jasminoides， and 21 components were common to both. After processing with ginger， raw G. jasminoides lost 21 components （including iridoids， flavonoids， alkaloids， and others）， while 7 chemical components were added （including coumarins， organic acids， organic acid esters， and flavonoids）. For the 15 batches of ginger-processed G. jasminoides， the water content ranged from 5.64% to 7.11%， total ash from 2.92% to 4.87%， and ethanol-soluble extract from 40.61% to 58.02%. The average contents of genipin gentiobioside， geniposide， crocin Ⅰ and crocin Ⅱ were 0.108 7， 0.542 2， 0.565 0， and 0.012 5 mg/g， respectively. CONCLUSIONS After processing with ginger， G. jasminoides loses 21 components， while 7 new components are added. Differences are observed in the water content， total ash， ethanol-soluble extract， and the contents of genipin gentiobioside， geniposide， crocin Ⅰ， and crocin Ⅱ of ginger-processed G. jasminoides from different producing areas. Notably， samples from Fujian exhibit high contents of genipin gentiobioside and ethanol-soluble extract， while samples from Jiangxi have a high content of crocin Ⅰ.

Background In recent years, the increasingly widespread application of nuclear and medical radiation technologies has resulted in a large number of occupational populations exposed to low-dose ionizing radiation (LDIR). At present, there is no consistent conclusion on the effects of long-term exposure to LDIR on the metabolic health of the occupational population. Objective To explore the association between long-term exposure to LDIR and metabolic syndrome (MetS) among medical radiologists. Methods A cross-sectional study was conducted to enroll 6431 medical radiologists who ordered occupational health checkups from January 2022 to December 2023, and basic information such as demographic characteristics, occupational characteristics, lifestyles, and dietary habits was collected through questionnaires. Physical examinations were conducted using a standardized protocol. Individual dose equivalents of occupational external exposure were monitored by dosimeters worn by medical radiologists. Logistic regression model was used for identifying influencing factors of MetS and sensitivity analysis, and restricted cubic spline model was used to explore the dose-response relationship between cumulative effective dose and MetS. Two-stage linear regression was used to evaluate threshold effect of association between cumulative effective dose and MetS. Results The positive rate of MetS was 13.6% (877/6431) among the enrolled 6431 study participants. The logistic regression showed that gender, age, monthly income, body mass index (BMI), cumulative effective dose, and smoking were influencing factors for MetS. The risk of MetS was higher in males (OR=1.511, 95%CI: 1.209, 1.888); using the < 30 years old group as reference, the risk of MetS was higher in the 30-39 years old (OR=1.509, 95%CI: 1.095, 2.079), 40-49 years old (OR=2.214, 95%CI: 1.551, 3.161), and ≥50 years old (OR=3.480, 95%CI: 2.338, 5.181) groups; using the <10000 yuan group as reference, the risk of MetS was lower in the group with a monthly income of 10000-14999 yuan (OR=0.715, 95%CI: 0.582, 0.878); the risk of MetS was higher in the BMI ≥ 24 kg·m⁻² group (OR=7.548, 95%CI: 6.223, 9.156); using the < 0.76 mSv group as reference, the risk of MetS was higher in the cumulative effective dose of 0.76-2.73 mSv group (OR=1.270, 95%CI: 1.017, 1.586); the risk of MetS was higher in the smoking group (OR=1.734, 95%CI: 1.428, 2.107). The results of restricted cubic spline showed that the cumulative effective dose was nonlinearly correlated with MetS (P _{non-linearity}=0.028), with an inflection point of 1.25 mSv. The risk of developing MetS increased by 34.1% for each unit increase in cumulative effective dose up to 1.25 mSv, whereas above 1.25 mSv, the statistical association was not significant. The sensitivity analysis results showed that after excluding the self-reported hypertensive and diabetic patients, the cumulative effective dose 0.76-2.73 mSv group still had an increased risk of developing MetS compared with the < 0.76 mSv group (P < 0.05), and the results were robust. Conclusion Among medical radiologists, male, age, BMI, and smoking are positively correlated with MetS, and monthly income is negatively correlated with MetS; cumulative effective dose is non-linearly correlated with MetS among medical radiologists.

ObjectiveTo determine the serum antibody level and risk factors in the adolescent population in a county in Zhejiang Province， following the immunization with inactivated COVID-19 vaccine， and to construct a prediction model for antibody concentration. MethodsWe conducted the study in a county in Zhejiang Province， employing a stratified cluster random sampling strategy in school children who had received the inactivated COVID-19 vaccine. Data on gender， age， type of vaccine， and time of vaccination was collected. Serum samples were also collected to test for anti-S and N IgG antibody against the SARS-CoV-2 by using chemiluminescent immunoassay （CLIA）. Risk factors were determined to construct a prediction model for antibody concentration. ResultsThe IgG antibody concentration was significantly higher in girls， those who received two doses， and those who had simply received the KX vaccine . It decreased with age and time interval between the sampling and last vaccination. The prediction model constructed by random forest regression in the study had a better model fit and predictive ability than that by the multivariable linear stepwise regression. ConclusionGender， age， vaccination dose， type of vaccine， and time of vaccination are associated with vaccination effectiveness of inactivated COVID-19 vaccines in adolescents. Prediction model could predict the antibody level in the vaccinated population， which can provide a new tool for better evaluation of vaccination effectiveness against emerging infectious diseases in future.

ObjectiveTo understand the usage of antibiotics in outpatients in a county of Zhejiang Province from 2015 to 2020， so as to provide a basis for further standardizing the clinical application of antibiotics in this region. MethodsOutpatient records and prescription records of 146 public medical institutions from 2015 to 2020 were extracted from the electronic medical record data sharing platform system of medical institutions in a county of Zhejiang Province. The utilization rates and the number of types of antibiotics used in outpatient patients were described. According to the drug anatomy， therapeutic and chemical classification system （ATC）， clinical application classification and dosage form， the use status of different types of antibiotics was observed. The annual percentage change （APC） was used to analyze the time trend of antibiotic use. Among the antibiotic prescriptions in each year， the proportions of prescriptions aimed for different use reasons and patients were compared to analyze the changes in the structures of antibiotic prescriptions. ResultsDuring 2015‒2020， a total of 2 861 438 prescriptions were issued in146 primary public medical institutions in this county， including 314 642 prescriptions for antibiotics， and the overall utilization rate of antibiotics was 11%. The utilization rate of antibiotics showed a decreased trend across the years （from 14.23% in 2015 to 7.59% in 2020，APC=-11.51%， 95%CI=-0.01%‒-21.7%， t=-12.05， P<0.001） and an obvious seasonal variation character （higher in winter and spring， lower in summer and autumn）. Cefoxitin sodium for injection was the most used antibiotic in 2015， and cefuroxime was the most used antibiotic from 2015 to 2020， respectively. The utilization rates of cephalosporins （APC=-11.06%， 95%CI=0‒-20.89%， t=-22.233， P<0.001）， quinolones （APC=-9.74%， 95%CI=0‒-18.53%， t=-7.652， P=0.002）， macrolides （APC=-17.52%， 95%CI=0‒-17.52%， t=-3.626， P=0.022） and lincoamides （APC=-49.01%， 95%CI=0‒-74%， t=-3.35， P=0.029） showed a decreasing trend across the years. There were differences in the distribution of drug use reasons （χ²=9 458.427， P<0.001）， as well as the age （χ²=5 421.709， P<0.001） and sex （χ²=245.322， P<0.001） of patients. During the observation period， 50.69% of antibiotic prescriptions were used to treat respiratory diseases， with the highest proportion of 57.67% in 2015 and the lowest proportion of 34.93% in 2020. 58.37% of patients were aged 50‒70 years， with a decreasing proportion of patients under 50 years （17.83% in 2015， 6.64% in 2020） and an increasing proportion of patients over 70 years （24.1% in 2015， 38.41% in 2020）. ConclusionThe utilization rate of antibiotics used in outpatients from primary public medical institutions in a county of Zhejiang Province shows a decreasing trend across the years， but higher than that of secondary and above hospitals in China， and also higher than that of primary medical institutions in economically-developed areas. The management and monitoring of the clinical use of antibiotics in the county should be actively strengthened.

Objective To analyze the prevalence status,influencing factors,and differences among different school age groups of myopia in children and adolescents in Ningxia Hui Autonomous Region.Methods From September to De-cember 2019,inYinchuan,Wuzhong,Shizuishan,Guyuan and Zhongwei of Ningxia,8 primary schools,6 junior high schools,6 senior high schools and 4 universities were randomly selected by stratified cluster random sampling.Five classes were se-lected from each grade of primary school,and four classes were selected from each grade of junior high school to university.All students in the selected classes were included in the study.A total of 14 211 students were selected for questionnaire sur-vey,physical examination and visual acuity measurement.The influencing factors of myopia in children of different grades were analyzed using the least absolute shrinkage and selection operator(LASSO)and logistic regression,and the model with the smallest Bayesian information criterion(BIC)was selected as the optimal model.Results The detection rate of myopia in children and adolescents in Ningxia Hui Autonomous Region was 70.3％.The detection rate of myopia in girls was higher than that in boys,and that in cities was higher than that in towns,with statistically significant differences(both P＜0.001).Compared with primary school students,the detection rate of myopia in junior high school students,senior high school students and college students gradually increased,and that in the college students was the highest,with statistically signifi-cant differences among different grades(all P＜0.001).The LASSO-logistic regression analysis of the influencing factors of myopia showed that urban and rural areas,gender,age,whether or not to wear glasses at present,the number of daily break exercises,whether or not to actively participate in physical activities,and whether or not to maintain regular exercises in the past 6 months were the influencing factors of myopia in primary school students(all P＜0.05).Gender and whether or not to wear glasses at present were the influencing factors of myopia in junior high school students and senior high school students(all P＜0.05).Whether or not to wear glasses at present was the influencing factor of myopia in college students(P＜0.05).Conclusion The detection rate of myopia in children and adolescents in Ningxia Hui Autonomous Region is high,and there are significant differences in the influencing factors of myopia among different age groups of children and adolescents.Wear-ing glasses is a protective factor to control myopia.Targeted health education on vision should be provided based on the aca-demic stage of children and adolescents to enhance their awareness of health care and improve their visual health.

OBJECTIVE To provide a reference for continuing education and training of clinical pharmacists. METHODS The revision of the syllabus and the improvement of training methods of practical skills training class for clinical pharmacists in the neurology department held by Xuanwu Hospital of Capital Medical University from 2007 to 2022 was sorted to summarize its advantages and characteristics. RESULTS Training programs were developed to benefit clinical pharmacists at different levels， and the training contents were adjusted according to the training programs and the needs of trainees. Teachers with teaching experience were selected to participate in the teaching. Theory teaching was combined with practice teaching in the teaching process， and case teaching and question-based teaching methods were adopted to benefit both senior clinical pharmacists and new clinical pharmacists. In addition， the influence of the training class was expanded through online teaching， so that doctors and pharmacists could communicate and learn together on the platform of the training class. For example， when designing the training program， we replaced one common neurological disease every two years， and carried rollover study on its new progress and new ideas； clinical pharmacist skill course was reduced， drug history writing， information retrieval and test index interpretation were compressed into clinical pharmacy skill course. CONCLUSIONS The continuing education platform is established for clinical pharmacists； new knowledge and concepts that clinical pharmacists of this specialty need to be familiar with are compiled into the teaching syllabus， and the experts who are familiar with the training of clinical pharmacists are selected to explain to the students so that the students could follow the platform to constantly update their knowledge and improve the ability of clinical pharmacists to participate in the clinic work.

Background The thyroid gland is one of the organs sensitive to ionizing radiation, and there are few studies on the effects of long-term exposure to low doses of ionizing radiation on the thyroid gland of radiation workers. Objective To investigate thyroid abnormalities in workers in medical radiology departments in Guangdong Province and to identify potential influencing factors of thyroid abnormalities. Methods A total of 1657 radiation workers from 48 hospitals in Guangdong Province were selected as survey subjects using convenience sampling, and their personal dose monitoring results and health examination information were retrospectively analyzed to determine the factors affecting thyroid abnormalities. Results The M (P₂₅, P₇₅) of thyroid absorbed dose (D_T) was 1.55 (0.65, 3.96) mGy in the 1657 investigated workers. The attribute-specific medians of D_T were 1.29, 1.38, 1.99, and 3.51 mGy for departments of diagnostic radiology, interventional radiology, radiotherapy, and nuclear medicine, respectively; and 1.10, 1.55, and 1.80 mGy for job titles of nurse, technician, and physician, respectively. Differences in D_T by gender, age, years of radiological work, age of radiation exposure onset, occupational category, and job title were statistically significant (Z=−6.35, H=708.52, 918.20, 31.19, 95.64, 39.28, P<0.05). The positive rate of thyroid abnormalities in investigated workers was 46.53% (771/1657). Among them, the positive rate of abnormal thyroid function was 22.87% (379/1657), that of abnormal thyroid morphology was 33.98% (563/1657), and that of thyroid nodule was 26.55% (440/1657). The differences in thyroid abnormality rates by gender, age, years of radiation work, age of radiation exposure onset, D_T, and job title of radiation workers were statistically significant (χ²=51.89, 49.64, 20.54, 18.29, 12.07, 16.16, P<0.05). The differences in abnormal thyroid function positive rate by gender, age of radiation exposure onset, and job title were statistically significant (χ²=26.21, 6.21, 8.32, P<0.05). The differences in the positive rates of abnormal thyroid morphology and nodules were statistically significant by gender, age, years of radiological work, age of radiation exposure onset, D_T, and job title (abnormal thyroid morphology, χ²=40.24, 64.17, 37.63, 15.17, 19.28, 15.05; nodules, χ²=31.41, 77.98, 42.11, 19.16, 21.70, 13.52, P<0.05). The positive rates of thyroid abnormality, thyroid morphology abnormality, and nodules all showed a linear increasing trend with increasing age, years of radiation work, and age of radiation exposure onset (P<0.05). The results of logistic regression analysis indicated that the factors influencing thyroid abnormalities were female (OR=2.17, 95%CI: 1.72-2.74), increased years of radiological work (OR=1.04, 95%CI: 1.03-1.06), onset of radiation exposure in age groups of 30-34 and ≥35 years (OR=1.63, 95%CI: 1.12-2.37; OR=2.58, 95%CI: 1.74-3.29), and working in department of diagnostic radiology (OR=1.40, 95%CI: 1.07-1.84). Conclusion Long-term exposure to low doses of ionizing radiation has an effect on thyroid abnormalities in medical radiation workers. Among them, being female, physicians, and working in department of diagnostic radiology are at a higher risk of abnormal thyroid function; being female, increased years of radiation work, and radiation exposure onset at age ≥30 years are associated with a higher risk of reporting abnormal thyroid morphology.

Objective:To investigate the feasibility of early treatment of congenital giant melanocytic nevus (CGMN).Methods:From October 2013 to December 2021, the clinical data of children with giant nevus treated with skin soft tissue expansion in the Plastic Surgery Department of Sun Yat-sen Memorial Hospital were analyzed retrospectively. A renal expander was implanted in the first stage, including single and repeated expansion. The giant nevus was removed and repaired in the second stage with an expanded skin flap. The occurrence of complications, such as wound infection, expander exposure, expander rupture, and flap congestion, were recorded. Children’s mental health problems and their parents’ satisfaction were also analyzed. The χ2 between children of different ages and the infection rate between children with an internal and external pot. Results:A total of 58 children, 24 males and 34 females, aged from 3 months to 3 years, with an average age of 1.45 years, were enrolled. A total of 190 expanders were implanted. The patients were followed for 5 to 106 months, averaging 42.43 months. In the first stage, 29 cases of wound infection, 41 cases of expander exposure, two cases of flap congestion, and 6 cases of expander rupture occurred. The flap transfers were not affected by these complications after appropriate treatment. The comparison of complication rates among 3 months~<1 year、1~<2 years、2~<3 years、3 years was 37.34%(31/83)、56.75% ((21/37) ), 33.33% (13/39) and 41.94%(13/31), respectively, No statistically significant difference ( χ2=5.21, P=0.157). The incidence of wound infection was 16.67% (6/36) and 14.94% (23/154), respectively, for the internal and external dilators. There was no significant difference in the location of the dilator pot and the incidence of wound infection ( χ2=0.07, P=0.795). The appearance of all children has been significantly improved. Thirty-nine children’s families are particularly satisfied, and 20 are generally satisfied with the treatment effect, and no mental health problems were found. Conclusions:Skin and soft tissue expansion is a reliable method for early treatment of congenital giant nevus.

Objective:To investigate the feasibility of early treatment of congenital giant melanocytic nevus (CGMN).Methods:From October 2013 to December 2021, the clinical data of children with giant nevus treated with skin soft tissue expansion in the Plastic Surgery Department of Sun Yat-sen Memorial Hospital were analyzed retrospectively. A renal expander was implanted in the first stage, including single and repeated expansion. The giant nevus was removed and repaired in the second stage with an expanded skin flap. The occurrence of complications, such as wound infection, expander exposure, expander rupture, and flap congestion, were recorded. Children’s mental health problems and their parents’ satisfaction were also analyzed. The χ2 between children of different ages and the infection rate between children with an internal and external pot. Results:A total of 58 children, 24 males and 34 females, aged from 3 months to 3 years, with an average age of 1.45 years, were enrolled. A total of 190 expanders were implanted. The patients were followed for 5 to 106 months, averaging 42.43 months. In the first stage, 29 cases of wound infection, 41 cases of expander exposure, two cases of flap congestion, and 6 cases of expander rupture occurred. The flap transfers were not affected by these complications after appropriate treatment. The comparison of complication rates among 3 months~<1 year、1~<2 years、2~<3 years、3 years was 37.34%(31/83)、56.75% ((21/37) ), 33.33% (13/39) and 41.94%(13/31), respectively, No statistically significant difference ( χ2=5.21, P=0.157). The incidence of wound infection was 16.67% (6/36) and 14.94% (23/154), respectively, for the internal and external dilators. There was no significant difference in the location of the dilator pot and the incidence of wound infection ( χ2=0.07, P=0.795). The appearance of all children has been significantly improved. Thirty-nine children’s families are particularly satisfied, and 20 are generally satisfied with the treatment effect, and no mental health problems were found. Conclusions:Skin and soft tissue expansion is a reliable method for early treatment of congenital giant nevus.

【Objective】 To study the effect of air inlet modes on the temperature variation, fluctuation, uniformity and coefficient of variation(CV), so as to evaluate the stability and uniformity of the temperature field in refrigerated warehouse for blood. 【Methods】 The temperature changes of blood refrigerated warehouse under different modes of air inlet during compressor operation were analyzed. The stability of the temperature field in the storehouse was evaluated by the changes, fluctuation, uniformity, CV and deviation of temperature at each testing point. 【Results】 The average value of temperature in the storehouse, adopting air inlet via straight blow, was (4.98±0.92)℃, while that of air inlet via micro-hole mode was(4.15±0.25)℃, with significant differences between each other(P<0.05). As to the CV of temperature, air inlet via straight blow was significantly different from that via micro hole(P<0.01). The fluctuation, uniformity and deviation of temperature created by straight blow and micro hole were 1.85±1.11 vs 0.49±0.38, 1.00±0.68 vs 0.47±0.37, and 0.61±0.45 vs 0.27±0.21, respectively, with significant differences between each other(P<0.01). 【Conclusion】 Compared with straight blow, the mean temperature created by micro hole was closer to the median value (4℃) of the temperature range, i. e.(4±2)℃, during blood storage. Otherwise, micro hole demonstrated a smaller CV of temperature, and superior performance in fluctuation, uniformity and deviation of the temperature at the testing points, which was conducive to ensure the stability of storehouse temperature field.