Objective: To investigation and analyze the causes and characteristics of a food poisoning incident caused by Clostridium perfringens in schools, so as to provide a reference for prevention and control of food poisoning incidents. Methods: From March 11 to 12,2024,on site epidemiological and hygienic investigations were conducted by using food poisoning case questionnaires and on site hygienic investigation forms in Shenzhen. Information related to the poisoning incident was collected through field investigations and telephone interviews. A case control study was used to analyze the suspected food responsible for the incident. Risk analysis in χ 2 analysis was used to obtain OR values. Results: The Clostridium perfringens food poisoning incident involved two schools, with a cumulative total of 52 cases. School A had an attack rate of 2.21%(45/2 040), school B had an attack rate of 1.29% (7/544). The main clinical symptoms were diarrhea (100.00%) and abdominal pain (84.62%), with a minority experiencing fever ( 3.85 %). Analysis via the case control study indicated that consuming mushroom and meat sauce during lunch on March 11, 2024, was a risk factor for the poisoning incident ( OR =124.50, 95% CI =14.53-937.51, P <0.05). On site investigation revealed that the mushroom and meat sauce provided by the schools on March 11 was prepared by the catering company the previous day, stored without refrigeration, and not reheated before serving the next day. A total of 31 patient anal swabs, 16 food samples, and 14 kitchen staff anal swabs were sent for laboratory testing. Clostridium perfringens was isolated from 22 case samples. Among these, type A Clostridium perfringens (alpha toxin) was detected in 8 case samples, 4 kitchen staff anal swabs, and 2 retained samples of the mushroom and meat sauce. Conclusions The incident is a food poisoning outbreak caused by Clostridium perfringens contamination in schools. Avoiding cross contamination and ensuring proper storage are key to preventing Clostridium perfringens food poisoning.

Objective: To investigate the impact of preschool children s aquatic motor skill (AMS) acquisition on their fundamental motor skill (FMS) development and the correlation between AMS and FMS development, so ao to provide a scientific basis for early childhood education and physical education teaching. Methods: From April to June 2024, 60 children, recruited by random sampling from a kindergarten in Taiyuan, were stratified randomly divided into an experimental group ( n =30) and a control group ( n =30). The experimental group were further divided into five classes of six each. They received AMS practice interventions twice weekly, 40 minutes per session, over eight weeks (16 sessions total) at a designated swimming center. The control group maintained their usual routine. Children s FMS and AMS were assessed pre and post intervention using the Test of Gross Motor Development-3rd (TGMD3) and Actual Aquatic Skills Test (AAST), respectively. Before and after test comparisons within and between groups employed t-tests, Wilcoxon signedrank tests, ANCOVA (including ranktransformed ANCOVA), and Cohen s d effect sizes were calculated for standardized mean differences. Spearman rank correlation was used to analyze relationships between FMS and AMS. Results: After the aquatic learning, the experimental group scored significantly higher than the control group on locomotor skills ( F=20.47, P <0.01, η 2=0.26), FMS ( F=4.59, P =0.04, η 2=0.08), and AMS ( F=109.71, P<0.01, η 2=0.79). The experimental groups improvement in locomotor skills 5.0(3.8, 7.3) versus the control group (2.8±2.5) yielded a medium effect size (Cohen s d =0.71); AMS gains in the experimental group [26.0(20.8, 28.0)] versus controls [1.0(0, 2.3)] showed a very large effect size (Cohen s d =4.73) (both P <0.01). Among preschool children, AMS acquisition was positively correlated with locomotor skills ( r =0.39) and overall FMS ( r =0.43)(both P <0.05). Skill specific assessments revealed lower proficiency in headfirst entry (immersion), treading water, and sagittalplane rotation. Conclusion Preschool children s acquisition of AMS has a positive effect on their FMS, with mutual facilitation between the two, especially in locomotor abilities.

Antibody-drug conjugates (ADCs) represent a promising class of targeted cancer therapeutics that combine the specificity of monoclonal antibodies with the potency of cytotoxic payloads. Despite their therapeutic potential, the use of ADCs faces significant challenges, including off/on-target toxicity and resistance development. This review examines the current landscape of ADC development, focusing on the critical aspects of target selection and antibody engineering. We discuss strategies to increase ADC efficacy and safety, including multitarget approaches, pH-dependent antibodies, and masked peptide technologies. The importance of comprehensive antigen expression profiling in both tumor and normal tissues is emphasized, highlighting the role of advanced technologies, such as single-cell sequencing and artificial intelligence, in optimizing target selection. Furthermore, we explore combination therapies and innovations in linker‒payload chemistry, which may provide approaches for expanding the therapeutic window of ADCs. These advances pave the way for the development of more precise and effective cancer treatments, potentially extending ADC applications beyond oncology.
Humans ; Immunoconjugates/adverse effects* ; Neoplasms/immunology* ; Animals ; Antibodies, Monoclonal/therapeutic use* ; Antineoplastic Agents/therapeutic use*

To summarize the nursing experience of a patient with acute injection botulism complicated with respiratory failure.The key nursing points include early standard use of botulinum antitoxin therapy to improve the signs of myasthenia;to strengthen respiratory support and airway management,to carry out respiratory training,and to promote the recovery of respiratory function;swallowing function training and dynamic evaluation were carried out to promote the recovery of swallowing function;narrative nursing was carried out to relieve patient's negative emotions.After 17 days of treatment and nursing care,the patient was removed from the tracheal tube on the 7th day,transferred to the general ward on the 14th day,and discharged successfully on the 17th day with a good prognosis.A telephone follow-up was conducted 4 months after discharge,and the patient recovered well.

OBJECTIVE To develop a highly sensitive and specific quantitative real-time poly-merase chain reaction(qPCR)method for detecting the VGM-R02b(a gene therapy drug for glutaric acidemia type Ⅰ)gene in cynomolgus monkeys and analyze the biological distribution of VGM-R02b.METHODS A standard curve was constructed using the VGM-R02b standard plasmid[an adeno-associ-ated virus serotype 9(AAV9)capsid]on a qPCR platform.The detection method was optimized and validated for key parameters,including the quantitative range,accuracy,precision,dilution linearity,selectivity,specificity,stability,and parallelism.The established method was used to determine the target gene of VGM-R02b in the blood,brain,stomach,heart,liver,spleen,lung,kidney,thymus,and duodenum of cynomolgus monkeys on day 29(D29)and D92 after a single,unilateral intraventricular injection of VGM-R02b.The biodistribution of VGM-R02b in cynomolgus monkeys was analyzed.RESULTS A qPCR method for quantifying the VGM-R02b target gene in cynomolgus monkeys was established and validated.The standard curve demonstrated a quantitative range of 5.00×109 to 5.00×10^1 copies·μg-1 DNA,with excellent precision,accuracy,dilution linearity,selectivity,and specificity.The target gene in tissues remained stable after being stored at room temperature for 4 h,-15 to-25℃ for 9 d,-60 to-80℃ for 90 d and after five freeze-thaw cycles.Similarly,the target gene in whole blood remained stable after being stored at room temperature for 4 h,-15 to-25℃ for 93 d,-60 to-80℃ for 93 d and after five freeze-thaw cycles.Extracted nucleic acid samples also showed stability after being stored at room temperature for 4.25 h,2-8℃ for 24.16 h,-60 to-80℃ for 109 d and after five freeze-thaw cycles.The method was also applied to evaluate the biological distribution of the target gene in cynomolgus monkeys.In the control group,the target gene was undetectable on D29 and D92 post-administration,but in the drug administration group,the target gene was distributed across the tissues,with higher concen-trations observed in the brain,liver,spleen,and spinal cord,and there were no significant differences in the target gene content across the tissues between D29 and D92.CONCLUSION The established qPCR method is robust,reliable and suitable for determination of VGM-R02b target gene in cynomolgus monkeys.

Objective:To clarify the morphological relationship between the upper airway and TMJ in patients with normal-angle skeletal Ⅱ and skeletal Ⅰ malocclusion.Methods:30 skeletal class Ⅰ and 22 skeletal class Ⅱ patients with normal-angle were included.CBCT examination was performed,and Mimics 21.0 software was used to conduct 3D reconstruction and measurements of the samples.Data was analyzed by using independent t-test and the Pearson correlation test.Results:12 measurements,including the sagittal diameter of nasopharyngeal segment,the sagittal,coronal diameter,minimum cross-sectional area,the volume of palato-pharyngeal segment and glossopharyngeum segment,the total volume of upper airway,posterior oblique slope of the articular eminence and the length of the condylar showed significant differences between skeletal Ⅱ and skeletal Ⅰ subjects with normal-angle(P＜0.05).The posterior oblique slope of the articular eminence showed a positive correlation with the sagittal diameter of the palatopharyngeal segment,volume and minimum cross-sectional area of glossopharyngeum lingual segment(P＜0.05).The liner ratio showed a negative correction with the coronal diameter of palatopharyngeal and glossapharyngeal segment as well as minimum cross-section area of glos-sapharyngeal segment(P＜0.05).Conclusion:The structure of upper airway is correlated with that of TMJ.Differences in the upper airway are statistically significant between skeletal Ⅱ and skeletal Ⅰ malocclusion with normal-angle(P＜0.05).

Objective:To clarify the morphological relationship between the upper airway and TMJ in patients with normal-angle skeletal Ⅱ and skeletal Ⅰ malocclusion.Methods:30 skeletal class Ⅰ and 22 skeletal class Ⅱ patients with normal-angle were included.CBCT examination was performed,and Mimics 21.0 software was used to conduct 3D reconstruction and measurements of the samples.Data was analyzed by using independent t-test and the Pearson correlation test.Results:12 measurements,including the sagittal diameter of nasopharyngeal segment,the sagittal,coronal diameter,minimum cross-sectional area,the volume of palato-pharyngeal segment and glossopharyngeum segment,the total volume of upper airway,posterior oblique slope of the articular eminence and the length of the condylar showed significant differences between skeletal Ⅱ and skeletal Ⅰ subjects with normal-angle(P＜0.05).The posterior oblique slope of the articular eminence showed a positive correlation with the sagittal diameter of the palatopharyngeal segment,volume and minimum cross-sectional area of glossopharyngeum lingual segment(P＜0.05).The liner ratio showed a negative correction with the coronal diameter of palatopharyngeal and glossapharyngeal segment as well as minimum cross-section area of glos-sapharyngeal segment(P＜0.05).Conclusion:The structure of upper airway is correlated with that of TMJ.Differences in the upper airway are statistically significant between skeletal Ⅱ and skeletal Ⅰ malocclusion with normal-angle(P＜0.05).

To summarize the nursing experience of a patient with acute injection botulism complicated with respiratory failure.The key nursing points include early standard use of botulinum antitoxin therapy to improve the signs of myasthenia;to strengthen respiratory support and airway management,to carry out respiratory training,and to promote the recovery of respiratory function;swallowing function training and dynamic evaluation were carried out to promote the recovery of swallowing function;narrative nursing was carried out to relieve patient's negative emotions.After 17 days of treatment and nursing care,the patient was removed from the tracheal tube on the 7th day,transferred to the general ward on the 14th day,and discharged successfully on the 17th day with a good prognosis.A telephone follow-up was conducted 4 months after discharge,and the patient recovered well.

OBJECTIVE To investigate the prevalence of plasma vitamin B1 deficiency in patients with sepsis and analyze the relationship between plasma vitamin B1 levels and lactic acidosis.METHODS A total of 40 patients with sepsis and 42 patients with sepsis shock admitted to the intensive care unit(ICU)of General Hospital of Ningxia Medical University from Nov.2020 to Nov.2022 were selected as the study objects.Volunteers matched by age,gender and body mass index(BMI)were selected as the healthy group.Data on gender,age,BMI,under-lying diseases,sequential organ failure assessment(SOFA)score,acute physiology and chronic health evaluation(APACHE)Ⅱ score,infection site,duration of mechanical ventilation and ICU length of stay were collected.La-boratory tests including blood routine,electrolytes,blood lactate(Lac),alanine aminotransferase(ALT),aspar-tate aminotransferase(AST),blood urea nitrogen(BUN)and serum creatinine(Scr)were performed in both groups.Plasma samples from both disease group and the healthy group were collected.High-performance liquid chromatography-tandem mass spectrometry(HPLC-MS/MS)was used to measure plasma thiamine(vitamin B1)levels in the disease group on the first,third and fifth days,respectively,as well as in the healthy group.RESULTS On the first day of admission,both the sepsis group and the septic shock group exhibited vitamin B1 de-ficiency.Specifically,6 cases of vitamin B1 deficiency were observed in the patients with sepsis,while 8 cases of vitamin B1 deficiency were noted in the patients with septic shock(P=0.640).By the third and fifth days,the proportions of vitamin B1 deficiency in the sepsis group were 22.50％and 42.50％,respectively,whereas in the septic shock group,these proportions were high at 26.19％and 54.76％,with a statistically significant difference(P＜0.05).On the fifth day,in the normal liver function group,vitamin B1 levels showed a negative correlation with lactate(r=-0.590,P=0.005),whereas in the abnormal liver function group,vitamin B1 levels were pos-itively correlated with lactate(r=0.678,P=0.017).The patients in the septic shock group had low K+and ALB levels[(2.60±0.42)mmol/L and(24.56±5.78)g/L,respectively]compared to those in the sepsis group(P＜0.05).CONCLUSIONS Plasma vitamin B1 deficiency is prevalent among patients with sepsis.Changes in plasma vitamin B1 levels are closely associated with blood lactate levels in these patients.