Lung cancer is the leading cause of death worldwide. With the prevalence of CT screening and early diagnosis and treatment of lung cancer in China, more and more patients with early-stage lung cancer characterized with ground-glass opacity are discovered and urgently require treatment, which poses a significant challenge to surgeons. As an emerging technology, three dimensional reconstruction technology plays a crucial auxiliary role in clinical work. This review aims to briefly introduce this technology, focusing on its latest advances in surgical applications in early lung cancer screening, malignant risk assessment, and perioperative period application and medical education.

[摘 要] 目的：探究花旗松素（TAX）通过Rac1/NF-κB/AKT信号通路调控人膀胱癌T24细胞的恶性生物学行为。方法：常规培养膀胱癌T24细胞，将其分为：Ctrl组（未处理）、TAX-L组（5 μmol/L TAX处理）、TAX-M组（10 μmol/L TAX处理 ）、TAX-H组（20 μmol/L TAX处理）、TAX-H + Rac1激活剂组（20 μmol/L TAX + 50 nmol/L ML-097处理）。CCK-8法、克隆形成实验、划痕愈合实验、Transwell小室实验和流式细胞术分别检测不同浓度TAX对T24细胞增殖、迁移、侵袭能力和凋亡的影响，WB法检测对各组T24细胞中细胞凋亡、上皮间充质转化、Rac1/NF-κB/AKT轴相关蛋白表达的影响；T24细胞裸鼠移植瘤实验检测TAX对移植瘤生长的影响。结果：TAX呈剂量依赖性地抑制T24细胞的增殖、迁移和侵袭能力，并促进其凋亡（均P < 0.05），促进凋亡蛋白BAX和E-cadherin、抑制Rac1/NF-κB/AKT信号通路相关蛋白的表达、Bcl-2和N-cadherin蛋白表达（均P < 0.05），抑制移植瘤的生长（P < 0.05），ML-097均可部分逆转上述作用（均P < 0.05）。结论：TAX通过抑制Rac1/NF-κB/AKT信号通路中抑制膀胱癌T24细胞的恶性生物学行为，促进其凋亡。

Objective: To explore the association between maternal lipid levels during pregnancy and the risk of overweight and obesity in offspring at 3 years of age, providing scientific evidences for the prevention and control of childhood obesity. Methods: A total of 2 432 mother-child pairs with maternal lipid tests during pregnancy and offspring s physical growth data at 3 years of age were included from the Borin in Guangzhou Cohort Study up to September 2021. Lipid indicators, including high density lipoprotein cholesterol (HDL-C), low density lipoprotein cholesterol(LDL-C), triglycerides (TG), and total cholesterol (TC), were measured at 13-19 +6 weeks (mid pregnancy) and 32-39 +6 weeks (late pregnancy). Children s body mass index (BMI) Z score were calculated according to the World Health Organization s growth standards for children under 5 years old. The lipid Z score were divided into four quartiles: Q 1, Q 2, Q 3 and Q 4. Linear regression was used to analyze the relationship between maternal lipid levels during pregnancy and offspring’s BMI Z score at 3 years of age. Poisson regression with a robust error variance was employed to evaluate the association between maternal lipid levels during pregnancy and the at risk of overweight and obesity in offspring at 3 years of age, after adjusting for maternal age at conception, education level, parity, pre pregnancy BMI and gestational diabetes mellitus. Results: There was a statistically significnt difference in the detection rate of overweight and obesity risk among children with different mothers s pre pregnancy BMI ( χ 2=22.85, P <0.05). Linear regression analysis showed that TG levels in late pregnancy were positively related to BMI Z score ( β=0.10, 95%CI=0.02-0.18, P <0.05). Poisson regression with a robust error variance indicated that, compared with the Q 1 group of TC, the Q 4 group of TC in mid pregnancy was associated with an increased risk of overweight and obesity in offspring at 3 years of age ( RR=1.59, 95%CI =1.04-2.44); compared with the Q 1 group of TG, the Q 4 group of TG during late pregnancy increased the risk of overweight and obesity in offspring at 3 years of age ( RR=1.79, 95%CI =1.02-3.12) (both P <0.05). Conclusions Maternal serum TC level during mid pregnancy can increase the risk of overweight and obesity in offspring at 3 years of age. Maternal serum TG levels during late pregnancy is positively correlated with BMI and the risk of overweight and obesity in offspring at 3 years of age.

Poly(ADP-ribose) polymerase 1 (PARP1) is a multifunctional protein involved in diverse cellular functions, notably DNA damage repair. Pharmacological inhibition of PARP1 has therapeutic benefits for various pathologies. Despite the increased use of PARP inhibitors, challenges persist in achieving PARP1 selectivity and effective blood-brain barrier (BBB) penetration. The development of a PARP1-specific positron emission tomography (PET) radioligand is crucial for understanding disease biology and performing target occupancy studies, which may aid in the development of PARP1-specific inhibitors. In this study, we leverage the recently identified PARP1 inhibitor, AZD9574, to introduce the design and development of its ¹⁸F-isotopologue ([¹⁸F]AZD9574). Our comprehensive approach, encompassing pharmacological, cellular, autoradiographic, and in vivo PET imaging evaluations in non-human primates, demonstrates the capacity of [¹⁸F]AZD9574 to specifically bind to PARP1 and to successfully penetrate the BBB. These findings position [¹⁸F]AZD9574 as a viable molecular imaging tool, poised to facilitate the exploration of pathophysiological changes in PARP1 tissue abundance across various diseases.

Rare diseases still lack effective treatments, and the development of drugs for rare diseases (known as orphan drugs) is an urgent medical problem. As natural active ingredients in living organisms, some biomacromolecule drugs have good biocompatibility, low immunogenicity, and high targeting. They have become one of the most promising fields in drug research and development in the 21st century. However, there are still many obstacles in terms of in vivo delivery. In view of the unique advantages of nanocarriers prepared from polymers, lipids, organic biomimetic and inorganic materials in drug delivery, researchers are committed to building an efficient delivery system with versatility and synergy to solve the bottleneck issues in treating rare diseases with biomacromolecule drugs. Therefore, this article reviews the research progress of nanocarrier delivering proteins, peptides and nucleic acids in the field of rare disease treatment in the past ten years, which provides ideas for researches on biomacromolecule drug nanosystems in the field of treatment of rare diseases.

The early life period is a rapid period, as well as a critical/sensitive period for brain development. Proteins, long-chain polyunsaturated fatty acids (LCPUFAs), iron, zinc, iodine, folate, choline, vitamins A, D, B6, and B12, all play a role in key neural development processes and thus influence brain development. Different brain regions or circuits have specific critical periods during different stages of development that depend on specific nutrients. Any nutrient deficiency during this period, even if corrected with supplementation, may still affect the trajectory of brain development and result in long-term cognitive and behavioral impairment. This article elucidates the effects of major nutrient deficiencies during early life on brain development, the possible sensitive/critical timing, and the impacts on long-term cognitive and behavioral development, providing insights for the prevention and intervention of nutritional diseases and psychiatric developmental disorders, and the promotion of early childhood development.

【Objective】 To understand factors associated with children′s attendance at nursery care institutions (NCIs) and the basic characteristics of the NCIs children were enrolled in, so as to provide scientific evidence for policymakers. 【Methods】 During November 2020 and January 2021, parents who visited the Department of Child Health Care in six selected maternal and children′s hospitals, as well as nearby NCIs in Zhejiang were invited to finish an online questionnaire. Information such as children′s sociodemographic characteristics, parents′ knowledge, attitude and practice regarding nursery and feeding, etc. were collected. A total of 1 756 questionnaires were collected. 【Results】 Compared to children who were not in NCIs, children enrolled in NCIs were older (94.4% of children ≥24 months vs. 30.1%, χ²=835.27), more likely to be from the local area (87.2% vs. 81.4%,χ²=12.25), more likely to have parents with a college degree (mother: 83.6% vs. 74.2%, χ²=35.29; father: 79.9% vs. 70.0%, χ²=27.01), had a higher prevalence of family annual income >200 000 CNY (49.5% vs. 28.2%, χ²=110.49), and were less likely to have their grandparents available to take care of them (16.7% vs. 26.8%, χ²=31.4) The difference all have great significant.(P<0.05). In a multivariate Logistic regression model, the older the child, the more likely they were to attend an NCI (for children aged 6 - 23 months, OR=6.70; for children aged 24 - 35 months, OR=134.03; and for children aged 36 - 42 months, OR=699.33; P<0.05). Family annual income was positively associated with children′s attendance at NCIs (for those earning 100 000 - 200 000 CNY/year, OR=1.63; for those earning 200 000 - 500 000 CNY/year, OR=2.96; and for those earning >500 000 CNY/year, OR=4.62, P<0.05). Conversely, the higher the level of grandparent involvement in daily care, the lower the attendance at NCIs (for children cared for by both parents and grandparents, OR=0.57; for those primarily cared for by grandparents, OR=0.26, P<0.05). For children who used to stay at NCIs, 82.8% stayed at institutions that only recruited children aged 0 - 3 years, 97.4% spent their whole day in NCIs, and 71.4% spent less than 3 000 CNY per month for NCI services. Additionally, over 95% of parents were satisfied with the food and care services in NCIs, as well as their children′s physical development in NCIs. However, 32.1% of NCIs were reported by parents as having no room for breastfeeding. 【Conclusions】 Children′s age, grandparent involvement in routine care, and family annual income are the main factors associated with children′s attendance at NCIs. There is a greater need for more affordable and community-based NCIs, particularly for children under 2 years old. Additionally, more attention should be paid to the quality surveillance, assessment and management of NCIs.

Objective To analyze the influencing factors of nutritional supplementation awareness in patients with nasopharyngeal carcinoma undergoing concurrent radiochemotherapy and perform an importance matrix analysis. Methods A total of 216 patients with nasopharyngeal carcinoma undergoing concurrent radiochemotherapy were selected as the study subjects. A questionnaire survey was conducted to assess patients' awareness of nutritional supplementation during radiochemotherapy for nasopharyngeal carcinoma, and general patient information was collected. Multiple linear regression analysis was used to analyze the influencing factors of nutritional supplementation awareness in patients undergoing radiochemotherapy for nasopharyngeal carcinoma, and an importance matrix analysis was performed for each factor. Results At 2 months of radiochemotherapy, the hemoglobin and prealbumin levels of patients with nasopharyngeal carcinoma were lower than those before and 2 months after radiochemotherapy, while the nutrition status score and malnutrition incidence were higher than those before and 2 months after radiochemotherapy (P < 0.01). The questionnaire assessment showed that the total score of nutritional supplementation awareness among patients with nasopharyngeal carcinoma was (37.44±6.10). Age, rural residence, avoidance coping, tumor stage, social support, education level and psychological resilience were the influencing factors of nutritional supplementation awareness in patients with nasopharyngeal carcinoma (P < 0.05). Importance matrix analysis showed that avoidance coping, psychological resilience and social support were more important and had lower difficulty in improvement, were included the priority improvement area. Age, rural residence, tumor stage and education level had more difficulty in improvement, and were included in the suboptimal improvement area. Conclusion The influencing factors of nutritional supplementation awareness in patients with nasopharyngeal carcinoma include rural residence, age, avoidance coping, education level, psychological resilience, tumor stage and social support. Clinical work should target these factors to improve patients′ nutritional cognition and behavior.

Objective To analyze the changes of antibody levels in positive patients with epidemic hemorrhagic fever(EHF) in Dongwan, and to provide effective theoretical guidance for the prevention . Methods From January 2018 to April 2022, the antibody test and general sociological characteristics, such as age, sex, occupation of 153 patients who were confirmed to be positive for serum EHF antibody by establishing infectious disease report cards were collected. Statistical analysis was performed using t test and 2test. Results Among of 153 patients , 70 were IgG positive, and the antibody positive rate was 45.75%. There was no significant difference in IgG antibody positive rate between EHF patients of different gender（χ²=0.165，P=0.685）. Commercial services (76.90%), workers (34.10%), unemployed or retired (44.10%) had the highest antibody positive rate. The IgG positive rate of EHF patients in different age groups was different. The antibody positive rate was the highest in the age group of 25-35 years old, and the antibody positive rate was lower in the age group of 60 years old and later. Among the 153 patients, the IgG antibody positive rate of the patients with onset in December, January and February was the highest, reaching 60.71% and 66.67% respectively. The IgG antibody positive rate of the patients with onset in April September was lower（ χ²=14.366，P=0.021）. Conclusion The positive rate of IgG antibody in EHF patients in Dongguan was high, which was related to occupation, age and time of onset; It is necessary to strengthen vaccination for this group of people to improve the antibody immunity level.

Objective: To explore the difference in intensive care unit (ICU) readmission rate between high dependency unit (HDU) and general ward for the patients with severe liver disease (SLD), and reflect the effect of HDU on SLD patientse. Methods: A clinical cohort of patients transferred out of ICU was established, and patients with severe liver disease who were transferred to HDU& general ward from July 2017 to December 2021 in the intensive care Unit of the Fifth Medical Center of PLA General Hospital were continuously enrolled. The main liver function indexes and MELD scores between the two groups were compared. Analyze the differences in severity and ICU readmission rate of SLD patients transferred to different wards, and clarify the role of HDU in the management of SLD patient. Area under the receiver operating characteristic (AUROC) was used to investigate the value of MELD score in predicting the occurrence of return to ICU. Results: The level of INR, TB, ALT and MELD scores of SLD patients transferred to HDU were significantly higher than those of patients transferred to general ward (all P < 0.05). MELD > 17 was found in 70.7% of SLD patients transferred to HDU group, while MELD ≤ 17 was found in 61.9% of SLD patients in general ward group. The ICU readmission rate of all patients in this cohort was 11.4%. By MELD quartile stratification, patients with SLD whose MELD > 23 had a significantly higher ICU readmission rate (20.0%) than those with SLD whose MELD ≤ 23 (8.6%) (P = 0.020). The ICU readmission rate was 8.2% when MELD ≤ 23 in the HDU group and 9.1% when MELD > 23, showing no significant difference (P = 1.000). The ICU readmission rate was 8.8% when MELD ≤ 23 in the general ward group. ICU reentry rate increased significantly to 36.4% when MELD > 23 (P = 0.001). MELD Score predicts that the optimal cut-off value of SLD patients in general ward readmitted to ICU was 23.5. Conclusion: The high dependency unit could better admit patients with SLD who were transferred out of ICU and required step-down treatment, and significantly reduced the ICU readmission rate of patients with SLD who were transferred out of ICU with MELD > 23. The patients with SLD and MELD score > 23 are suitable to be transferred from ICU to HDU.