Objective To detect the content of 5'-tRF-GlyGCC in peripheral blood and explore its applica-tion value in the early diagnosis of colorectal cancer(CRC).Methods Peripheral blood samples were randomly collected from 99 CRC patients,11 patients with enteritis,17 patients with colorectal polyps and 99 healthy indi-viduals in the same period at the Affiliated Hospital of Guizhou Medical University.The content of 5'-tRF-GlyGCC in total RNA of peripheral blood was detected by fluorescence RT-PCR.The receiver operating characteristic curve(ROC)was established to analyze the value of 5'-tRF-GlyGCC content in the early diagnosis of CRC and to explore the relationship between its content and the clinical and pathological characteristics of CRC patients.Results The content of 5'-tRF-GlyGCC in the peripheral blood of CRC patients and colorectal polyp patients was significantly higher than that of healthy individuals and patients with enteritis,and the differences were statistically significant(P<0.05).The area under the curve(AUC)of 5'-tRF-GlyGCC for diagnosing CRC was 0.817(95%CI:0.763～0.871),with a diagnostic sensitivity of 56.7%and a specificity of 99.9%.The content of 5'-tRF-GlyGCC in peripheral blood was significantly positively correlated with the levels of CEA and CA19-9 in CRC patients.Conclusion The detection of 5'-tRF-GlyGCC in peripheral blood has a high application value in the early diagnosis of CRC and can be used for clinical reference and research.

Objective To evaluate the current radiation doses in pediatric non-cardiac interventional procedures, and analyze the associated clinical factors, and to provide data references for reducing pediatric radiation exposure. Methods We conducted a retrospective analysis of the radiation doses of children who had undergone non-cardiac interventional procedures at the interventional department of a tertiary pediatric hospital in Jinan from January 2022 to October 2024. The collected data included basic demographic information, surgical date, anatomical site, disease type, and radiation dose parameters (cumulative fluoroscopy time, cumulative dose area product in cine mode, cumulative air kerma, and the number of images acquired). The Kruskal-Wallis H test was used for comparative analysis between groups (P < 0.05 was considered statistically significant). Results Among the 475 included children, 99 cases (20.8%) had infantile hemangioma (median P_ka, 0.136 Gy·cm²; median K_a,r, 0.38 mGy), 235 cases (49.5%) had venous malformation (median P_ka, 9.82 Gy·cm²; median K_a,r, 40.99 mGy), 75 cases (15.8%) had lymphatic malformation (median P_ka, 0.06 Gy·cm²; median K_a,r, 0.18 mGy), 32 cases (6.7%) had retinoblastoma (median P_ka, 6.58 Gy·cm²; median K_a,r, 52.34 mGy), 12 cases (2.5%) had arteriovenous malformation (median P_ka, 42.3 Gy·cm²; median K_a,r, 162.87 mGy), and 22 cases (4.6%) had other vascular malformations (median P_ka, 21.7 Gy·cm²; median K_a,r, 89.1 mGy). There were significant differences between children with different disease types in the cumulative fluoroscopy time, cumulative dose area product in cine mode, cumulative air kerma at the patient entrance reference point, and the number of images acquired during non-cardiac interventional procedures (all P < 0.01). Conclusion This study presented the types and proportions of pediatric non-cardiac interventional procedures, evaluated the radiation dose levels of different surgical types, and analyzed the effects of weight and anatomical site on radiation exposure, which can be useful for preliminary assessment of radiation doses in pediatric non-cardiac interventional procedures.

Objective To observe changes in genetic material in the peripheral blood of pediatric patients with vascular malformations after interventional procedures. Methods A total of 108 children with vascular malformations who underwent interventional procedures at Shandong University Affiliated Children’s Hospital between February 2021 and January 2024 were selected as the research subjects. Clinical data and peripheral venous blood samples before and after the interventional procedures were collected from the children. Two biological indicators, γ-H2AX and peripheral blood lymphocyte chromosomal aberration (CA), were used to determine the levels of genetic material damage in children with vascular malformations before and after interventional procedures. Results The median age of the children was 7 years and the median body weight was 27 kg. The median dose-area product (DAP) was 24.20 Gy·cm² and the median DAP/kg was 1.04 Gy·cm²/kg. The incidence rates of both γ-H2AX foci and CA in children with vascular malformations significantly increased after the interventional procedures (Z = 5.924, P < 0.001; Z = 8.515, P < 0.001). The incidence of postoperative CA in 7 children were significantly higher than that in others, approaching or exceeding 4%. The incidence rates of postoperative γ-H2AX foci and CA in children with DAP/kg ≥ 1 Gy·cm²/kg were significantly higher than those in children with DAP/kg < 1 Gy·cm²/kg (U = 7.586, P = 0.031; U = 6.835, P = 0.009). No significant differences were observed in the incidence rates of postoperative γ-H2AX foci and CA among subgroups based on age, body weight, or surgical site. A positive correlation was observed between the difference in the incidence rates of γ-H2AX foci before and after the procedure and DAP/kg (R = 0.493, P = 0.027). Conclusion Ionizing radiation exposure during interventional procedures can increase peripheral blood genetic material damage levels in children with vascular malformations, and the damage levels show a correlation with the radiation dose, with some children being abnormally sensitive. Further research is needed to explore the influencing factors for genetic material damage in children with vascular malformations after interventional procedures, which is of great significance for reducing long-term cancer risks and achieving personalized treatment strategies.

Objective To detect the content of 5'-tRF-GlyGCC in peripheral blood and explore its applica-tion value in the early diagnosis of colorectal cancer(CRC).Methods Peripheral blood samples were randomly collected from 99 CRC patients,11 patients with enteritis,17 patients with colorectal polyps and 99 healthy indi-viduals in the same period at the Affiliated Hospital of Guizhou Medical University.The content of 5'-tRF-GlyGCC in total RNA of peripheral blood was detected by fluorescence RT-PCR.The receiver operating characteristic curve(ROC)was established to analyze the value of 5'-tRF-GlyGCC content in the early diagnosis of CRC and to explore the relationship between its content and the clinical and pathological characteristics of CRC patients.Results The content of 5'-tRF-GlyGCC in the peripheral blood of CRC patients and colorectal polyp patients was significantly higher than that of healthy individuals and patients with enteritis,and the differences were statistically significant(P<0.05).The area under the curve(AUC)of 5'-tRF-GlyGCC for diagnosing CRC was 0.817(95%CI:0.763～0.871),with a diagnostic sensitivity of 56.7%and a specificity of 99.9%.The content of 5'-tRF-GlyGCC in peripheral blood was significantly positively correlated with the levels of CEA and CA19-9 in CRC patients.Conclusion The detection of 5'-tRF-GlyGCC in peripheral blood has a high application value in the early diagnosis of CRC and can be used for clinical reference and research.

The number of interventional procedures has increased significantly due to the advantages of minor trauma, rapid recovery, and low incidence of complications. In 2018, there were approximately 24 million interventional procedures worldwide, representing a six-fold increase compared with 3.6 million procedures in 2008. From 2020 to 2021, the percentage of medical institutions with independent interventional departments in China increased from 50.49% to 63.18%. Interventional procedures inherently involve exposure to ionizing radiation, which poses a greater risk of radiation-related harm to the pediatric population due to their increased sensitivity, Consequently, the radiation dose levels experienced by children undergoing these procedures have become a growing concern, emerging as a focus of research both nationally and internationally. This article summarizes the reports published by the International Commission on Radiological Protection (ICRP), the National Council on Radiation Protection and Measurements (NCRP), and the International Atomic Energy Agency (IAEA) as well as academic articles, and reviews the dose optimization measures in the interventional procedures for pediatric patients. Regular radiation safety training for interventional radiation workers, enhancing radiation safety awareness, optimizing intraoperative techniques, and timely updating imaging equipment can effectively reduce the radiation dose received by pediatric patients. This approach helps reduce the doses to an acceptable range while still meeting interventional procedural requirements, thereby protecting the physical health of pediatric patients.

Computed tomography (CT) examination may expose patients to a high radiation dose. The reduction of radiation dose in pediatric CT examinations is becoming increasingly important. The diagnostic reference level (DRL) is a practical tool that can achieve optimization of protection and reduce radiation dose in pediatric CT examinations. This article provides a brief summary of the concept, development methods, current situations by country, and issues related to the DRL in pediatric CT examinations, aiming to provide a references for radiation protection optimization in pediatric CT examinations in China.

Background::Atopic dermatitis (AD) affects approximately 10% of adults worldwide. CM310 is a humanized monoclonal antibody targeting interleukin-4 receptor alpha that blocks interleukin-4 and interleukin-13 signaling. This trial aimed to evaluate the efficacy and safety of CM310 in Chinese adults with moderate-to-severe AD.Methods::This multicenter, randomized, double-blind, placebo-controlled, phase 2b trial was conducted in 21 medical institutions in China from February to November 2021. Totally 120 eligible patients were enrolled and randomized (1:1:1) to receive subcutaneous injections of 300 mg CM310, 150 mg CM310, or placebo every 2 weeks for 16 weeks, followed by an 8-week follow-up period. The primary endpoint was the proportion of patients achieving ≥75% improvement in the Eczema Area and Severity Index (EASI-75) score from baseline at week 16. Safety and pharmacodynamics were also studied.Results::At week 16, the proportion of EASI-75 responders from baseline was significantly higher in the CM310 groups (70% [28/40] for high-dose and 65% [26/40] for low-dose) than that in the placebo group (20%[8/40]). The differences in EASI-75 response rate were 50% (high vs. placebo, 95% CI 31%–69%) and 45% (low vs. placebo, 95% CI 26%–64%), with both P values <0.0001. CM310 at both doses also significantly improved the EASI score, Investigator’s Global Assessment score, daily peak pruritus Numerical Rating Scale, AD-affected body surface area, and Dermatology Life Quality Index compared with placebo. CM310 treatment reduced levels of thymus and activation-regulated chemokine, total immunoglobulin E, lactate dehydrogenase, and blood eosinophils. The incidence of treatment-emergent adverse events (TEAEs) was similar among all three groups, with the most common TEAEs reported being upper respiratory tract infection, atopic dermatitis, hyperlipidemia, and hyperuricemia. No severe adverse events were deemed to be attributed to CM310. Conclusion::CM310 at 150 mg and 300 mg every 2 weeks demonstrated significant efficacy and was well-tolerated in adults with moderate-to-severe AD.Trial Registration::ClinicalTrials.gov, NCT04805411.

ObjectiveTo observe the efficacy and safety of Uyghur medicine Yangxin Dawayimixike Honey Paste （养心达瓦依米西克蜜膏， YDMHP） in the treatment of stable angina pectoris （SAP） of qi stagnation and blood stasis syndrome. MethodsA randomized ， double-blind， positive-controlled，multi-center clinical trial was conducted， in which 370 patients with SAP of qi stagnation and blood stasis syndrome were randomly divided into treatment group（279 cases）and control group（91cases）at a ratio of 3∶1. The treatment group was orally administered with YDMHP， 3 g each time， and placebo of Xuefu Zhuyu Capsule （血府逐瘀胶囊）， 2.4 g each time， while the control group was treated with Xuefu Zhuyu Capsule， 2.4 g each time， and placebo of YDMHP， 3 g each time， both twice a day for a course of 12 weeks. The primary outcome was the effect of angina pectoris symptom. The secondary outcomes include single angina symptom scores such as number of attacks， duration of attacks， pain intensity and usae of nitroglycerin scores， the total angina symptom score before and after the treatment， the usage of nitroglycerin， the exercise duration in treadmill exercise test （TET） and the Duck treadmill score among patients，the scores of Seattle Angina Questionnaire （SAQ） on five dimensions including physical limitations， anginal stability， anginal frequency， treatment satisfaction， and disease perception， and efficacy of TCM syndrome and of each single TCM symptom after treatment. The safety were evaluated by examine blood routine， urine routine， liver and kidney function， fasting blood sugar， electrocardiogram， adverse events. ResultsThe total effective rate of angina symptom in the treatment group was 71.69% （200/279）， significantly higher than 51.64% （47/91） in the control group （P＜0.01）. The curative and markedly effective rate of TCM syndrome in the treatment group was 53.05% （148/279）， which was significantly higher than 25.27% （23/91） in the control group （P＜0.01）. After treatment， scores of the number as well as duration of angina attacks and pain severity， the total score of angina symptoms， and the usage of nitroglycerin significantly decreased in both groups， and more changes were seen in the treatment group than in the control group； the scores of physical limitations， anginal stability， anginal frequency， treatment satisfaction， and disease perception in both groups significantly increased， and more improvement were shown in the experimental group regarding the anginal stability， anginal frequency and treatment satisfaction （P＜0.05 or P＜0.01）. The effects of chest pain， chest tightness， palpitation， shortness of breath and fatigue in experimental group were significantly higher than those in control group （P＜0.05 or P＜0.01）. There was no significant difference in the exercise duration of treadmill test and Duke score among patients between the two groups either before or after treatment （P＞0.05）. Adverse events occurred in 66 cases （23.66%） of the experimental group and 16 cases （17.58%） of the control group， with no statistical significance between the two groups （P＞0.05）. ConclusionThe Uyghur medicine YDMHP can effectively improve symptoms of angina pectoris， reduce the number， duration， and intensity of attacks， decrease the dosage of nitrogly-cerin and improve the individual TCM symptoms and has good safety in the treatment of SAP patients of qi stagnation and blood stasis.

The thyroid gland is an endocrine organ sensitive to ionizing radiation. Long term exposure to low dose radiation (LDR) among radiation workers in work may lead to thyroid dysfunction or the formation of thyroid nodules. The influencing factors of these outcomes are various and multifaceted, including but not limited to environmental factors (iodine intake levels), occupational factors (length of service, personal dose), and individual factors (gender, age, smoking, alcohol consumption, obesity, blood pressure, blood glucose). Currently, there is no consensus on the specific trends of thyroid nodule development and thyroid function indicators in radiation workers caused by long-term LDR exposure. Therefore, molecular epidemiological investigations should be conducted to explore its pathogenesis in the future, and long-term epidemiological investigations with multiple centers and large samples can be conducted to further verify existing findings. Furthermore, strengthening occupational health training of radiation workers and standardizing personal dose measurement are beneficial for comprehensive prevention of thyroid diseases, and ensuring occupational health of radiation workers.

Objective To apply a phantom for dose measurement in interventional therapy for pediatric vascular diseases, and calculate the effective dose (E) and conversion coefficient of dose area product (DAP) to E, and to provide a dose reference for studying radiation dose and radiation protection in children. Methods Thermoluminescent dosimeters were placed in the organs of the phantom. Low-, medium-, and high-dose groups were set for three types of vascular anomalies based on the duration of fluoroscopy. Digital subtraction angiography was used to simulate exposure conditions at different dose levels. The organ dose was measured, and the effective dose was calculated. Results For the three groups of vascular anomalies in the head and face, the red bone marrow doses were 8.15, 30.34, and 43.53 mGy, respectively, the effective doses were 12.88, 47.84, and 73.12 mSv, respectively; and the average conversion coefficient of DAP to E was 2.16. For the three groups of vascular anomalies in the trunk, the red bone marrow doses were 2.11, 15.62, and 31.21 mGy, respectively; the effective doses were 12.39, 70.56, and 134.60 mSv, respectively, and the average conversion coefficient of DAP to E was 3.03. For the three groups of vascular anomalies in the lower extremities, the red bone marrow doses were 3.58, 6.50, and 12.28 mGy, respectively, the effective doses were 3.64, 7.04, and 14.85 mSv, respectively, and the average conversion coefficient of DAP to E was 0.73. Conclusion Patient dose and DAP-to-E conversion coefficient are in the following order: vascular anomalies in the trunk > vascular anomalies in the head and face > vascular anomalies in the lower extremities. The dose data obtained can be used to estimate children’s radiation exposure.