Objective: To explore the relationship between sleep characteristics, physical activity patterns, with depressive and anxiety symptoms in college students, so as to provide reference for student mental health promotion. Methods: From September to November 2023, a convenience sampling method was used to select 7 954 college students aged 18-22 years from 9 universities in Shanghai, Hubei, and Jiangxi. Assessments were conducted using the International Physical Activity Questionnaire Short-Form (IPAQ-SF), Patient Health Questionnaire-9 (PHQ-9), Generalized Anxiety Disorder Scale-7 (GAD-7), and Pittsburgh Sleep Quality Index (PSQI) to evaluate physical activity, depressive and anxiety symptoms, and sleep quality, respectively. Logistic regression analysis was employed to explore the impact of sleep characteristics and physical activity patterns on depressive and anxiety symptoms and their comorbidity among college students. Results: The detection rates for depressive symptoms, anxiety symptoms, and comorbid depression and anxiety symptoms were 25.67%, 35.39%, and 23.15%, respectively. Factors such as gender, grade, household registration, parental education level, annual family income, family structure, and dietary habits were all associated with the detection rates of depressive and anxiety symptoms and their comorbidity (χ2=4.41-118.39, P<0.05). Physical activity patterns, sleep duration, sleep quality, and sleepwake characteristics were also associated with the occurrence of depressive and anxiety symptoms and their comorbidity (χ2=9.66-627.70, P<0.05). Logistic regression analysis showed that college students who stayed up late and slept less than 7 had the highest risk of depressive and anxiety symptoms and their comorbidity (OR=1.93, 1.85, 1.88, P<0.05). Compared to regular physical activity patterns, insufficient physical activity patterns were associated with an increased risk of depressive and anxiety symptoms (all OR=1.18, P<0.05). Further stratified analysis results showed that the risk of depression, anxiety and their comorbidity increased in college students who stayed up late and slept less than 7 h, went to bed before midnight and slept less than 7 h, or went to bed before midnight and slept more than 7 h but did not have sufficient physical activity (P<0.05). Conclusions Sleep characteristics and physical activity patterns significantly affect depressive and anxiety symptoms in college students. Universities should strengthen sleep management and implement flexible physical activity interventions to help students establish healthy lifestyles.

Objective:To analyze the status of registration of clinical trials of radiopharmaceuticals in China, and to provide reference for the development and clinical application of radiopharmaceuticals.Methods:By searching the clinical trial registration and information disclosure platform of the Center for Drug Evaluation of the National Medical Products Administration (NMPA), the data on clinical trials of radiopharmaceuticals registered from 2014 to 2024 were collected and analyzed for trial design, administered dose, common indications, and geographical distribution.Results:A total of 77 clinical trials were included. The Compound Annual Growth Rate for the number of projects from 2014 to 2024 was 40%. Diagnostic radiopharmaceuticals were predominantly based on 18F and 99Tc m, while therapeutic radiopharmaceuticals primarily utilized 177Lu and 90Y. All indications were concentrated in the field of oncology. Regarding trial design, non-randomized (71.4%), open-label (89.6%), and single-arm (66.2%) trials accounted for the highest proportions. Geographical distribution showed Beijing (29 trials), Shanghai (18 trials), and Jiangsu province (14 trials) as the regions with the highest concentration of clinical trials. Conclusions:Radiopharmaceutical clinical trials in China have shown rapid growth. However, research remains predominantly focused on oncology, with a relatively high proportion of early-stage trials. In order to fully utilize the potentials of radiopharmaceuticals and improve the quality of clinical trials, nuclear medicine researches should broaden therapeutic applications, implement prudently administerd dose in clinical trials, and implement optimized radiation protection procedures across all clinical trial centers.

Objective:To analyze the status of registration of clinical trials of radiopharmaceuticals in China, and to provide reference for the development and clinical application of radiopharmaceuticals.Methods:By searching the clinical trial registration and information disclosure platform of the Center for Drug Evaluation of the National Medical Products Administration (NMPA), the data on clinical trials of radiopharmaceuticals registered from 2014 to 2024 were collected and analyzed for trial design, administered dose, common indications, and geographical distribution.Results:A total of 77 clinical trials were included. The Compound Annual Growth Rate for the number of projects from 2014 to 2024 was 40%. Diagnostic radiopharmaceuticals were predominantly based on 18F and 99Tc m, while therapeutic radiopharmaceuticals primarily utilized 177Lu and 90Y. All indications were concentrated in the field of oncology. Regarding trial design, non-randomized (71.4%), open-label (89.6%), and single-arm (66.2%) trials accounted for the highest proportions. Geographical distribution showed Beijing (29 trials), Shanghai (18 trials), and Jiangsu province (14 trials) as the regions with the highest concentration of clinical trials. Conclusions:Radiopharmaceutical clinical trials in China have shown rapid growth. However, research remains predominantly focused on oncology, with a relatively high proportion of early-stage trials. In order to fully utilize the potentials of radiopharmaceuticals and improve the quality of clinical trials, nuclear medicine researches should broaden therapeutic applications, implement prudently administerd dose in clinical trials, and implement optimized radiation protection procedures across all clinical trial centers.

Objective To determine new delhi metallo-β-lactamase-1 (NDM-1 )gene in strains of gram-negative bacilli with de-creased sensitivity to carbapenems,and to investigate the epidemic situation of strains carrying NDM-1 gene in Guangzhou area. Methods 105 strains of gram-negative bacilli with decreased sensitivity to carbapenems isolated from 201 1 to 2014 were collected. The conserved sequences of NDM-1 gene were screened initially by using polymerase chain reaction(PCR)amplification,and posi-tive strains were confirmed by PCR amplification of the whole sequence.Then NDM-1 gene was cloned into plasmid pUCm-T and sequenced.Results The resistance rates of Enterobacteriaceae bacteria against meropenem,ertapenem and imipenem were 29.09%, 50.91% and 29.09%,respectively.All strains of Acinetobacter baumanii were resistant to meropenem and imipenem.The resist-ance rates of Pseudomonas aeruginosa against meropenem and imipenem both were 88.46%.4 strains were NDM-1 gene positive, including 1 strain of Klebsiella pneumoniae,2 strains of Escherichia coli,1 strain of Enterobacter cloacae.Successful establishment of cloning plasmid pUCm-T-NDM-1 was confirmed by using double enzyme digestion and sequencing.The sequencing results were compared with BLAST,it was showed that the sequences were exactly the same in four cloned plasmids,and sequences of NDM-1 were also exactly the same with those in domestic and foreign.Conclusion Strains of NDM-1 producing gram-negative bacilli exist in Guangzhou area,and whole sequence of NDM-1 gene carried in these strains are exactly the same with those found in foreign.

Objective To analyze the correlation of primary hyperuricemia and apolipoprotein E gene polymorphism between Hui and Han nationalities in Ningxia , and provide data for disease control and prevention .Methods Blood sam-ples,obtained from 900 cases at some medical institutions for case-control study, were detected for gene polymorphism of apolipoprotein E by connecting the enzyme reaction .Results and Conclusion There was no statistically significant differ-ence in the blood uric acid level in different nationality groups between the case group and the control group .Creatinine, fasting blood glucose, total cholesterol, triglycerides, and body mass index were considered risk factors of hyperuricemia . There was no statistically significant difference in apolipoprotein E genotype and allele frequency between different nationali -ties and genders in case group and control group .There might be no correlation of primary hyperuricemia and apolipoprotein E gene polymorphism .