Objective: To assess the nutritional supply status of school meals for primary and secondary school students in Henan Province, so as to provide a basis for scientific guidance of school meals. Methods: During 2021-2023, 115 lunch and dinner samples were collected from 25 primary and secondary schools in Zhoukou, Anyang and Luoyang of Henan Province by a direct selection method, and 13 nutrients were determined for each sample. The nutrient supply was evaluated based on Nutrition Guidelines of School Meals and Reference Intake of Dietary Nutrients for Chinese Residents (2023 Edition). Mann-Whitney U test was used to compare the differences of nutritional supply between urban and rural schools. Results: The median values for energy (709.77 kcal,1 kcal=4.18 kJ), fat energy supply ratio (0.27) and carbohydrate energy supply ratio (0.55) in the 66 lunches and dinners from primary school were within the recommended range. The supply of protein (28.39 g) and sodium (1 464.59 mg) was excessive. The median values of zinc (2.62 mg) and dietary fiber (5.19 g) were lower than the reference values. No statistically significant differences were observed in the supply of 13 nutrients between urban and rural primary schools( U = 427.00 -633.00, P > 0.05 ). Among 49 samples from secondary schools, the median value of energy supply (930.02 kcal), carbohydrate energy ratio ( 0.54 ) and fat energy supply ratio(0.25) were within the recommended range; and the median values of protein (38.82 g) and sodium (2 556.80 mg) were higher than the standard; and the median values of calcium (250.32 mg) and vitamin B1 (0.16 mg) were lower than the standard. Additionally, the differences in the level of vitamin B2 ( U =372.00) and zinc ( U =375.00) between the urban and rural secondary schools were statistically significant ( P <0.05). Conclusion Nutrient supply of primary and secondary school meals in three cities of Henan Province is inadequate and imbalanced, and the recipe need to be further optimized and improved.

In recent years, with continuous advancements in molecular biology and gene testing technologies, the diagnosis and treatment of colorectal cancer have been rapidly transitioning toward precision medicine. The application of molecular classification, target detection, and liquid biopsy technologies has driven ongoing updates to clinical guidelines. Multidisciplinary team colla-boration, innovations in precision surgical techniques, and the widespread adoption of neoadjuvant combination therapies have collectively promoted more individualized and scientific management of colorectal cancer. Looking ahead,the authors believe that as multi-omics biomarkers, organoid models, and artificial intelligence are increasingly integrated into clinical practice, precision diagnosis and treatment of colorectal cancer will deepen further, offering patients more efficient and personalized therapeutic options.

Objective:To analyze the clinical characteristics of locally advanced rectal cancer patients with pathological complete response (pCR) after neoadjuvant chemoradiotherapy combined with immunotherapy.Methods:The retrospective cohort study was conducted. The clinicopatholo-gical data of 46 patients with locally advanced rectal cancer who were admitted to 6 medical centers, including Beijing Friendship Hospital of Capital Medical University et al, from June 2021 to November 2022 were collected. There were 29 males and 17 females, aged (61±4)years. Patients received neoadjuvant chemoradiotherapy combined with immune checkpoint inhibitor therapy, and under-went radical total mesorectal excision during 6-12 weeks after radiotherapy. Observation indicators: (1) comparison of clinical characteristics between pCR and non-pCR patients;(2) postoperative complications and adverse reactions of pCR and non-pCR patients. Comparison of measurement data with normal distribution between groups was conducted using the t test. Comparison of measurement data with skewed distribution between groups was conducted using the Mann-Whitney U test. Comparison of count data between groups was conducted using the chi-square test or Fisher exact probability. Comparison of ordinal data between groups was conducted using the Mann-Whitney U test. Results:(1) Comparison of clinical characteristics between pCR and non-pCR patients. Before neoadjuvant therapy, there were 14 cases aged ≥50 years and 6 cases aged <50 years in pCR patients, versus 25 cases and 1 case in non-pCR patients, showing a significant difference between the two groups ( P<0.05). After neoadjuvant therapy, cases in clinical stage T0, T1, T2, T3, T4 were 11, 1, 5, 3, 0 for pCR patients versus 7, 4, 2, 11, 2 for non-pCR patients, cases of tumor regression grade 1, 2, 3, 4 were 11, 8, 1, 0 for pCR patients versus 7, 14, 4, 1 for non-pCR patients, cases in low-risk, medium-risk, high-risk of neoadjuvant rectal scoring and grading were 20, 0, 0 for pCR patients versus 4, 18, 4 for non-pCR patients, respectively, showing significant differences in above indicators between the two groups ( Z=-2.256, -2.104, -5.458, P<0.05). (2) Postoperative complications and adverse reactions of pCR and non-pCR patients. Postoperative complications occurred in 2 cases of pCR patients and 5 cases of non-pCR patients, postoperative adverse reactions occurred in 11 cases of pCR patients and 10 cases of non-pCR patients, showing no significant difference between the two groups ( P>0.05). Conclusion:Compared with locally advanced rectal cancer patients aged ≥50 years, those aged <50 years have significant benefits from neoadjuvant chemoradiotherapy combined with immunotherapy. Clinical T staging and magnetic resonance imaging-detected tumor regression grade after neoadjuvant therapy have predictive value for patients with pCR .

Periodontitis is a common chronic infectious disease resulting from the interaction between oral microorganisms and the host's immune system.The immune system plays a dual role in regulating inflammation.Macrophages,as a component of innate immu-nity,play a crucial role in both the onset and resolution of periodontitis.This article reviews the role of macrophages in periodontitis and the recent advances in targeting macrophages for the treatment of periodontitis.

Objective:To examine the impact of returned migration experience on the prevalence of non-sui-cidal self-injury(NSSI)and its associations with childhood emotional maltreatment(EM),social support and sleep quality.Methods:A total of 3 901 middle school students in Guizhou Province were investigated with the Adoles-cent NSSI behavior Questionnaire,Childhood Trauma Questionnaire-short Form(CTQ-SF),Adolescent Social Sup-port Scale,and Pittsburgh Sleep Quality Index(PSQI).Results:The prevalence of NSSI among middle school students in Guizhou province was 22.8％,with the rate of 27.3％among returned migrant middle school students.Social support and sleep quality partially mediate the relationship between childhood EM and NSSI in mid-dle school students,with effect sizes of 0.06.The EM scores of returned migrant middle school students(β=-0.62)and non-returned migrant middle school students(β=-0.50)were negatively correlated with social sup-port scores in childhood.The sleep quality scores of returned migrant students(β=0.22)and non-returned migrant students(β=0.14)were positively correlated with NSSI scores.Conclusion:The prevalence of NSSI in returned migrant students is higher.Social support and sleep quality play an important role in the relationship between child-hood EM and NSSI in middle school students.The relationship between childhood EM and social support,sleep quality and NSSI in returned migrant middle school students is stronger than that in non-returned migrant middle school students.

Objective To analyze the risk factors of postoperative multi-drug resistant bacteria(MDRO)infection in patients with esophageal cancer,construct the nomogram model and evaluate fitting effect of the model,so as to help doctors make accurate clinical decisions.Methods A total of 116 patients with esophageal cancer who received surgical treatment were selected and divided into the infected group(25 cases)and the uninfected group(91 cases)according to whether they were infected with MDRO.American anesthesia association of physicians rating(ASA)score and tumor locations(upper,middle and lower segments)on admission were compared between the two groups.Surgical method(endoscopic,open),clinical stage,history of chemoradiotherapy,preoperative nutritional status,white blood cell count at admission,retention time of drainage tube,retention time of central venous catheter,length of ICU stay and total length of hospital stay were also compared between the two groups.Principal component analysis(PCA)was used to screen and reduce the dimension of the data.Multivariate Logistic regression analysis was performed to analyze the risk factors of postoperative MDRO infection.A nomogram model of MDRO infection risk was constructed,and the predictive fitting effect of the model was evaluated by receiver operating characteristic(ROC)curve and calibration curve.Results Compared with the uninfected group,higher ASA score(≥3 points),laparotomy and clinical stage Ⅲ,higher proportion of patients with poor nutritional status before surgery,longer drainage tube retention time,central venous catheter retention time and long ICU stay time were found in the infected group(P<0.05).Multivariate Logistic regression analysis suggested that open surgery,long stay in ICU and poor preoperative nutritional status were risk factors for postoperative MDRO infection in patients with esophageal cancer(P<0.05).Based on this,the area under ROC curve of the nomogram model was 0.828(0.759-0.897).The results of Hosmer-Lemeshow test showed χ2=0.426,P=1.000,and the model had good goodness-fit,high calibration degree and clinical application degree.Conclusion The nomogram risk prediction model based on the mode of operation,length of ICU stay and preoperative nutritional status has good prediction ability.

Objective:To investigate the feasibility and safety of laparoscopic purse- string suture clamps combined with multi-functional seal caps for esophagojejunal Roux-en-Y anastomosis during total laparoscopic radical total gastrectomy (TLTG).Methods:This was a retrospective descriptive study of 42 patients with primary gastric malignancies who underwent TLTG at the First Affiliated Hospital of Nanjing Medical University that utilized laparoscopic purse-string suture clamps and multi-functional seal caps for esophagojejunal anastomosis between May, 2024 and January, 2025. The cohort included 33 males and 9 females, with a mean age of (67.7 ±9.5) years and a mean body mass index (BMI) of (23.9±2.9) kg/m 2. The American Society of Anesthesiologists (ASA) physical status classifications were I - II in 40 patients and III in 2 patients, and all patients were definitively diagnosed preoperatively via gastroscopy, dual-energy CT, and/or MRI. Tumor locations included the gastroesophageal junction (GEJ) in 28 cases (Siewert type II - III), the upper third of the stomach in 12 cases, and the middle third in 2 cases. The median distance of esophageal invasion was 1.3 cm, though in 10 cases this was ≥2 cm. Preoperative TNM staging was I-II in 17 patients and III in 25 patients. Surgical outcomes including operative time, anastomosis time, intraoperative blood loss, pathological results, and postoperative recovery were retrospectively analyzed. Results:All 42 operations were successful. The mean operative time was(212.5±26.4) minutes, and the average time from multi-functional seal cap placement to completion of the esophagojejunal anastomosis was (54.2±7.5) minutes. Mean intraoperative blood loss was (79.9±21.3) ml. Postoperative pathology confirmed R0 resection in all specimens, with a mean proximal esophageal margin distance of (2.1±1.6) cm. Furthermore, (51.9±15.1) lymph nodes on average were harvested from each patient; the mean time to oral intake was (149.5±41.4) hours; and the mean hospital stay was (11.3±5.4) days. Postoperative complications occurred in 6 patients: anastomotic leakage ( n=2), residual intra-abdominal infection ( n=1), pulmonary infection ( n=3), and Clavien-Dindo grade III or higher complications occurred in 2 patients. No recurrence, mortality, or anastomosis-related complications were observed within a median follow-up of 5.8 months (range 3.5-11.2). Conclusion:We find the application of the laparoscopic purse-string suture clamps and multi-functional seal caps for esophagojejunal anastomosis in TLTG to be safe and feasible, with satisfactory short-term outcomes.

Objective To explore the application value of low-temperature plasma bipolar forceps in open thyroid cancer surgery.Methods The clinical data of 30 patients with differentiated thyroid cancer treated with low-temperature plasma bipolar forceps by our team from May 2021 to October 2024 were retrospectively analyzed.And 30 patients with differentiated thyroid cancer treated with monopolar electrocautery+ultrasonic scalpel were selected as the control group.The surgical procedures for both groups were thyroid lobectomy,isthmus resection+ipsilateral level Ⅵ lymph node dissection.The age,gender,body mass index(BMI),tumor TNM stage,operation time,intraoperative blood loss,48 h postoperative drainage volume,and surgical complications of the two groups were compared.Results There were no significant differences in age,gender,BMI,and tumor TNM stage between the two groups.The operation time,intraoperative blood loss,48 h postoperative drainage volume,and the incidence of postoperative transient hypoparathyroidism in the low-temperature plasma bipolar forceps group were significantly less than those in the control group(P＜0.05).There were no occurrences of postoperative subcutaneous hematoma,permanent recurrent laryngeal nerve palsy,and permanent hypoparathyroidism in both groups.Conclusion In thyroid cancer surgery,low-temperature plasma bipolar forceps can not only achieve fine detailed operations,but also effectively protect the blood supply of the recurrent laryngeal nerve,superior laryngeal nerve,and parathyroid glands.It has less trauma and a faster postoperative recovery,and is worthy of clinical promotion and application.

Objective:To explore the distribution and clearance of 99mTc labeled diethylenetriamine pentaacetic acid(99mTc-DTPA)in different brain regions of adult rats after administration through brain extracellular space(ECS)pathway.Methods:After the injection of a volume of 2 μL and radioactive activity of about 3.7 MBq(100 μCi)of 99mTc-DTPA into the caudate nucleus and thalamus of SD rats through stereotactic positioning of rat brain,the single photon emission computed tomography/computed tomography(SPECT/CT)for small animals was used for imaging at different time points,and the dyna-mic distribution and clearance of the tracer in the whole body were observed continuously.The SD rats were injected with 99mTc-DTPA into thalamus and caudate nucleus respectively for biological distribution in vivo.They were put to death 4 h later.Their blood and urine were collected.The brain,cerebellum,heart,liver,spleen,lung,and kidney were taken and weighed by γ counter to measure its radioactivity.Results:SPECT/CT imaging results showed that after 99mTc-DTPA was administered through brain ECS,the radioactivity was concentrated in the brain,kidney and bladder.The tracer administered to the left caudate nucleus was preferentially drained to the right cerebellum,while the tracer administered to the right caudate nucleus was preferentially drained to the left cerebellum.There was a phenomenon of"con-tralateral cerebellar dominant drainage"in the caudate nucleus.The thalamic area preferentially drained to the ipsilateral cerebellum after administration.Four hours after administration via ECS,high radioac-tive uptake appeared in urine,cerebellum and brain,followed by blood and kidney.The radioactive up-take values of heart,liver,spleen and lung were low,which were mainly excreted through urinary sys-tem.Conclusion:Intracerebral ECS administration is a promising method of administration,but there are significant differences in distribution and clearance in different brain regions.This study further ex-pands the content and significance of"ECS regions",and also provides an important theoretical founda-tion for the treatment of encephalopathy and the research of new drugs through brain ECS in the future.

Objective:To investigate the feasibility and safety of laparoscopic purse- string suture clamps combined with multi-functional seal caps for esophagojejunal Roux-en-Y anastomosis during total laparoscopic radical total gastrectomy (TLTG).Methods:This was a retrospective descriptive study of 42 patients with primary gastric malignancies who underwent TLTG at the First Affiliated Hospital of Nanjing Medical University that utilized laparoscopic purse-string suture clamps and multi-functional seal caps for esophagojejunal anastomosis between May, 2024 and January, 2025. The cohort included 33 males and 9 females, with a mean age of (67.7 ±9.5) years and a mean body mass index (BMI) of (23.9±2.9) kg/m 2. The American Society of Anesthesiologists (ASA) physical status classifications were I - II in 40 patients and III in 2 patients, and all patients were definitively diagnosed preoperatively via gastroscopy, dual-energy CT, and/or MRI. Tumor locations included the gastroesophageal junction (GEJ) in 28 cases (Siewert type II - III), the upper third of the stomach in 12 cases, and the middle third in 2 cases. The median distance of esophageal invasion was 1.3 cm, though in 10 cases this was ≥2 cm. Preoperative TNM staging was I-II in 17 patients and III in 25 patients. Surgical outcomes including operative time, anastomosis time, intraoperative blood loss, pathological results, and postoperative recovery were retrospectively analyzed. Results:All 42 operations were successful. The mean operative time was(212.5±26.4) minutes, and the average time from multi-functional seal cap placement to completion of the esophagojejunal anastomosis was (54.2±7.5) minutes. Mean intraoperative blood loss was (79.9±21.3) ml. Postoperative pathology confirmed R0 resection in all specimens, with a mean proximal esophageal margin distance of (2.1±1.6) cm. Furthermore, (51.9±15.1) lymph nodes on average were harvested from each patient; the mean time to oral intake was (149.5±41.4) hours; and the mean hospital stay was (11.3±5.4) days. Postoperative complications occurred in 6 patients: anastomotic leakage ( n=2), residual intra-abdominal infection ( n=1), pulmonary infection ( n=3), and Clavien-Dindo grade III or higher complications occurred in 2 patients. No recurrence, mortality, or anastomosis-related complications were observed within a median follow-up of 5.8 months (range 3.5-11.2). Conclusion:We find the application of the laparoscopic purse-string suture clamps and multi-functional seal caps for esophagojejunal anastomosis in TLTG to be safe and feasible, with satisfactory short-term outcomes.