Objective:To explore the characteristics of parental emotional regulation(ER)and its influence on the ER of children with attention deficit hyperactivity disorder(ADHD).Methods:A total of 140 children with ADHD meeting the Diagnostic and Statistical Manual of Mental Disorders,Fourth Edition(DSM-Ⅳ)criteria and their parents,68 normal controls and their parents were recruited.ER was assessed using the Difficulties in Emotion Regulation Scale(DERS),Emotion Regulation Questionnaire(ERQ)and Emotion Regulation Checklist(ERC).Re-sults:Higher scores of DERS in emotion regulation strategies,impulse control and goal-directed behavior were found in parents of children with ADHD compared with parents of normal controls(Ps＜0.05).The higher emo-tional lability(EL)of ERC and lower ER of ERC detected in children with ADHD were correlated with the emo-tion regulation strategies,impulse control and goal-directed behavior of their parents(Ps＜0.01).The mediation an-alyses suggested that ER in children with ADHD may mediate the relationship of parental emotion regulation strate-gies and parental impulse control with children's EL.Conclusion:Parents of children with ADHD may exhibit emo-tional dysregulation in multiple subdimensions which might affect emotional regulation and aggravate the emotional lability of children with ADHD.

Objective:To explore the influence of social exclusion on the relapse tendency of female drug re-hab patients,and the mediating role of self-esteem and the moderating role of positive psychological capital.Method:A total of 288 female drug rehabilitation patients were selected,and the Social Exclusion Question-naire(SEQ)was used to assess the degree of social exclusion experienced by the patients.The Relapse Tendency Questionnaire(RPQ)was used to evaluate the current tendency of drug relapse.The Rosenberg Self-Esteem Scale(RSES)was used to evaluate the self-esteem level of the patients,and the Positive Psychological Capital Question-naire(PPCQ)was used to evaluate their level of positive psychological capital.Results:The SEQ scores of female drug rehab patients were positively correlated with the RPQ scores(β=0.41,P＜0.001),The RSES scores had a mediating effect between the scores of SEQ and RPQ,with a mediation effect size of 0.09(95％CI:0.04-0.15,accounting for 20.6％of the total effect).The PPCQ scores had a moderating effect between the scores of RSES and RPQ(β=-0.08,P＜0.05)and between the scores of SEQ and RPQ(β=0.10,P＜0.05).Conclusion:So-cial exclusion could not only directly affect but also indirectly affect the relapse tendency through self-esteem of fe-male drug rehab patients.Positive psychological capital could moderate the relationship between social exclusion,self-esteem,and relapse tendency.

Objective:To explore the effectiveness and safety of laparoscopic-assisted liposuction in the treatment of gynecomastia.Methods:A retrospective study was conducted on 115 male breast development patients from January 2021 to May 2023 at the First Affiliated Hospital of Henan University and Shaoguan Hospital of Southern Medical University. The patients were divided into two groups based on surgical methods: the laparoscopic combined liposuction technique group (observation group) and the traditional areola incision group (control group). The control group consisted of 59 cases, aged between 18 and 52 years (26.2±5.2); There were 56 cases in the observation group, aged between 18 and 55 years (26.5±5.2). The differences in surgical time, intraoperative blood loss, drainage tube removal time, incidence of surgical complications, postoperative drainage volume, pain visual analog scale (VAS), and patient satisfaction were compared between two groups of patients.Results:The intraoperative bleeding volume, drainage tube removal time, and postoperative drainage volume in the observation group were 12.25±2.23, 2.85±0.53, and 80.52±7.53, respectively, all of which were lower than those in the control group (26.53±2.35, 4.22±0.59, 81.25±8.54, respectively), and the differences were statistically significant (all P<0.05).The incidence of sensory abnormalities in the nipple areola area of the observation group was 1.8% (1/56), which was lower than the 10.2% (6/59) of the control group, and the difference was statistically significant ( P<0.05).The postoperative breast shape, nipple shape, and incision score of the observation group were 81.15±18.52, 77.85±22.15, and 72.58±10.56 points, respectively, all higher than the control group's 69.34±18.48, 78.12±21.75, and 60.35±9.35 points, and the differences were statistically significant (all P<0.05). Conclusions:Laparoscopic combined with liposuction technology for the treatment of gynecomastia can reduce intraoperative bleeding and postoperative drainage volume and shorten the time for removing drainage tubes with better safety.

Health insurance fund regulation (HIFR) is a vital issue in the modernization of healthcare security governance, with its importance as a primary task of the healthcare security department continually reinforced in policy practice. This study focused on the 22 specialized policies issued by the National Healthcare Security Administration from its establishment in 2018 to March 2024, deeply analyzed their issue characteristics, and summarized the evolutionary trends of policy changes, as well as the knowledge production patterns that existed in the series of policy formulation, implementation, and feedback processes. Our analysis revealed that the diverse issue characteristics had led to heterogeneous directions in HIFR policies. The policy development process presented distinct composite evolutionary trends, mainly manifested in four aspects: the integration of regulatory system and content, the convergence of professional and societal forces, the parallelism of special governance and regular supervision, and the complementarity of conventional and emerging methods. Additionally, the study demonstrated that the knowledge production embedded in policy evolution encompassed four different dimensions: problem rectification, norm setting, pilot experience, and technical absorption. Together with issue characteristics and policy evolution, they formed an integrated, dynamic, and open system of knowledge production, continuously promoting the renewal and iteration of regulation policies.

Objective:To understand the real experiences of scientific research anxiety among nurses in tertiary hospitals, for references for improving the research capabilities of clinical nurses and formulating corresponding training and management strategies.Methods:From January to June 2023, this study adopted the phenomenological research method in qualitative research, and used the purposive sampling method to select 15 clinical nurses from two tertiary hospitals for semi-structured interviews. The seven-step analysis method was used to extract the theme of nurses′ experiences of scientific research anxiety.Results:A total of 337 minutes of interviews were conducted, with over 80 000 words transcribed. After analysis, four themes were formed, including the manifestations of clinical nurses′ research anxiety(imbalance between work and family life, negative emotions caused by anxiety, positive effects of moderate anxiety), individual reasons(research motivation and self doubt, challenges in time management and resource allocation), external reasons(fast iteration and updating of research methods, research pressure caused by career development, multidimensional support resources to overcome research anxiety), and adjustment strategies(nurses′ own internal drive and insensitivity, multidimensional support resources to overcome research anxiety).Conclusions:Most clinical nurses attached great importance to nursing research and were eager to receive more research support and assistance; The research anxiety of clinical nurses was influenced by multiple factors such as research motivation, time management, iterative updates of research methods, and research support systems. It was recommended that hospital managers actively support clinical nurses to participate in scientific research activities, establish a sound scientific research management system, in order to enhance nurses′ scientific research capabilities.

Bitter taste receptors,also known as type 2 taste receptors(T2Rs),are found not only in the mouth's taste bud cells but also in various tissues and cells,including macrophages.Macrophages,known for their re-markable plasticity,play a crucial role in regulating innate immunity,managing inflammation,and orchestrating immune responses to antigens,pathogens,and environmental factors.Recently,the study of the expression and function of bitter taste receptors within macrophages has garnered significant interest.This review summarizes the expression levels and dis-tribution characteristics of bitter taste receptors in macrophages and examines their effects on macrophage polarization,phagocytosis,and chemotaxis,as well as their potential molecular mechanisms.The purpose of this review is to provide in-sight and perspectives for research on the regulatory role of T2Rs in macrophage functions.

Background Perfluorinated and polyfluoroalkyl substances (PFAS), a large group of emerging pollutants, are ubiquitous in the ecological environment. Their multiple organ toxic effects on human body are reported. Understanding the exposure level of PFAS in cord serum and associated influencing factors can provide scientific evidence for studying maternal and newborn health effects and risk regulation. Objective To explore the exposure levels of PFAS in cord serum and potential impact factors. Methods This study was based on the maternal and infant database and the cord serum sample bank of the Sheyang Mini Birth Cohort Study (SMBCS) established in 2009. A self-designed questionnaire was used to collect information on sociodemographic characteristics, living environment, and lifestyle of mothers during pregnancy. A total of 1097 cord serum samples were measured utilizing ultra-high performance liquid chromatography-Q-Exactive Orbitrap high-resolution mass spectrometry. Multiple linear regression models were used to identify influencing factors related to PFAS exposure level in cord serum. Results A total of 38 types of PFAS were detected in the cord serum samples, including 20 perfluorocarboxylic acids (PFCA), 14 perfluorosulfonic acids (PFSA), and 4 other types of PFAS. The detection rates of 14 PFAS compounds were above 50%. The detection rates of perfluoro-1-hexanesulfonic acid (PFHxS), perfluoro-1-octanesulfonic acid (PFOS), perfluorononanoic acid (PFNA), perfluorooctanoic acid (PFOA), perfluorodecanoic acid (PFDA), and perfluoroundecanoic acid (PFUdA) were in the range of 99.18%-100.00%. The median concentrations of PFOA and 6∶2 chlorinated polyfluorinated ether sulfonic acid (6∶2CI-PFESA) were higher than those of the other compounds, which were 3.76 µg·L⁻¹ and 2.61 µg·L⁻¹, respectively. The correlation coefficients among cord serum PFAS were in the wide range of 0.0911-0.8429 (P < 0.05). The associations between PFHxS and perfluoro-1-heptanesulfonic acid (PFHpS) (r=0.8429, P < 0.05), PFOS and PFHpS (r=0.7012, P < 0.05), and PFUdA and perfluorododecanoic acid (PFDoA) (r=0.7875, P < 0.05) were positive. The proportions of PFCA and PFSA in the cord serum samples were 60.1% and 38.4%, respectively. PFOA and 6∶2 Cl-PFESA were the predominant compounds in the cord serum samples, whose proportions were 37.8% and 19.3%, respectively. The concentrations of specific types of cord serum PFAS had varied associations with the following demographic variables of pregnant women: age, parity, education level, gestational age, and occupation. The multiple linear regression analysis found that the concentrations of 8 PFAS (PFHxS, PFHpS, PFNA, PFOS, PFDA, PFUdA, PFDoA, and 6∶2 CI-PFESA) in umbilical cord serum were lower in pregnant women aged 25 years and older than in those under the age of 25 years; compared to pregnant women with education levels at or below junior middle school, those with education levels at or above high school had lower concentrations of perfluoroheptanoic acid (PFHpA); the concentration of PFHpA in cord serum was negatively correlated with household annual income; multiparous women had higher concentrations of PFNA, PFUdA, and PFDoA than primiparous women; compared to mothers engaged in manual labor, the concentration of perfluoro-1-butanesulfonic acid (PFBS) in umbilical cord serum was lower in mothers engaged in mental labor, while the concentrations of PFBS and PFOA were lower and the concentrations of perfluorotridecanoic acid (PFTrDA) and 8∶2 chlorinated polyfluorinated ether sulfonic acid (8∶2CI-PFESA) were higher in mothers of other occupational types; the concentrations of umbilical cord serum PFOA, PFOS, PFUdA, and PFDoA were positively correlated with the gestational age of pregnant women, while N-methylperfluoro-1-octanesulfonamido acetic acid (N-MeFOSAA) was negatively correlated with the gestational age of pregnant women; PFTrDA was negatively correlated with the birth weight of newborns; compared with those with insufficient gestational weight gain, those with adequate gestational weight gain had lower PFDoA, while those with excess gestational weight gain had higher N-MeFOSAA. Conclusion PFAS compounds exposure is common in the mothers and infants in the study area. PFOA and 6∶2 CI-PFESA are the two main compounds in cord serum. Cord serum PFAS are associated with several demographic characteristics of the pregnant women. Future research needs to pay more attention to PFAS alternatives and other emerging contaminants.

Objective:To construct 68Ga-1, 4, 7-trizacyclononane-1, 4, 7-triacetic acid (NOTA)-CD44 as a novel atherosclerosis tracer targeting hyaluronic acid (HA), and evaluate its biological property and molecular imaging features. Methods:Low molecular weight (LMW) recombinant human CD44 protein was selected, and the C-terminal of the protein was modified by sulfonation and coupled to the bifunctional ligand NOTA to synthesize a novel molecular probe 68Ga-NOTA-CD44 targeting HA. The biological properties of the probe, such as labeling rate and in vitro stability, were studied. Three atherosclerotic plaque model mice and three normal C57BL/6 mice were studied by 68Ga-NOTA-CD44 microPET/CT imaging and pathological examination. Results:68Ga-NOTA-CD44 tracer was synthesized and purified with the radiochemical purity above 99%, and the specific activity was up to 62.22 MBq/nmol. lts stability was good in PBS, and the radiochemical purity was over 90% after incubation for 3 h. After intravenous injection, the probe was metabolized mainly by the kidneys, and its metabolic level decreased successively in the liver, lungs and blood. MicroPET/CT imaging results of atherosclerotic model mice suggested that the uptake in the plaque of abdominal aorta was higher at 60 min after injection, with SUV max and target/background ratio (TBR) max of 1.14±0.02 and 4.95±0.93, and the probe had certain atherosclerotic plaque eroded targeting, which was consistent with the pathological result. Conclusions:As a novel probe, 68Ga-NOTA-CD44 is simple to prepare and has a high labeling rate. It has good physicochemical properties and in vivo biological properties, and can display atherosclerotic eroded plaques sensitively. 68Ga-NOTA-CD44 has a promising prospect to be a new molecular probe for early noninvasive recognition of atherosclerotic eroded plaques.

【Objective】 To investigate asymptomatic infection of hepatitis B virus(HBV) among hepatitis B vaccinated donors in Shenzhen, and analyze its serological and molecular characteristics. 【Methods】 The HBsAg ELISA positive blood samples of blood donors born after 1992 were collected. HBsAg, anti-HBs, HBeAg, anti-HBe and anti-HBc were further detected by Roche electrochemiluminescence immunoassay (ECL). BCP/PC and S regions were amplified by Nested-PCRs, HBV DNA quantification were adopted by qPCR simultaneously, and the sequences were also analyzed. 【Results】 A total of 46 632 blood samples of donors(31 612 males and 15 020 females) from December 2020 to January 2022 collected, and 99 samples with HBsAg ELISA positive were screened out. After tested by ECL, Nested-PCRs, and real-time fluorescence PCR, 61 were confirmed HBsAg positive, with the positive rate at 0.13% (61/46 632), including 49 males (0.16%, 49/31 612) and 12 females (0.08%, 12/15 020). The HBsAg positive rate of males was higher than that of females (P<0.05). 50 out of 61 sequences for S region were obtained. By phylogenetic analysis, there were 46 cases of type B (92%, 46/50, 38 males and 8 females), 4 cases of type C (8%, 4/50, 3 males and 1 female). The high frequency mutations observed in S region were N40S (8/46,17.39%), G44E (7/46,15.22%), Q129H/R(6/46,13.04%), Y161F/S(7/46, 15.22%), V179A(4/46,8.70%), S53L(2/4,50%), C69T(2/4,50%) and I126S/T(2/4,50%), including the immune escape mutations Q129R and T/I126A/N/S/T. 【Conclusion】 Hepatitis B vaccination can significantly reduce the positive rate of HBsAg and increase the safety of blood transfusion. The high frequency immune escape mutations have become a potential risk of blood safety, and need to be further explored.

Objective:To investigate the relationship between serum estradiol(E2)levels on the day before transcervical resection of adhesion(TCRA)and pregnancy outcomes in moderate-severe intrauterine adhesion(IUA).Methods:Clinical data of patients with moderate-severe IUA diagnosed and received TCRA in the Second Affiliated Hospital of Air Force Medical University from January 2018 to December 2019 were extracted and ana-lyzed.The primary outcome indicator was the pregnancy rate during the 12-month follow-up period.Multiple re-gression analysis,smoothed curve fitting and recursive algorithm analysis were applied in this study.Results:A-mong the 288 patients who met the inclusion criteria,222 met the criteria and were finally included in the analysis.The results of multiple regression analysis showed that the E 2 level on the day before surgery was negatively cor-related with the pregnancy rate after TCRA(aOR 0.77,95% CI 0.63-0.93,P=0.0074).Recursive algorithm a-nalysis showed that when the preoperative serum E2 level was less than 380.6 pmol/L,for every increase of 36.7 pmol/L pregnancy rate decreased by approximately 20% (aOR 0.78,95% CI 0.67-0.89,P=0.0004).Conclusions:The results suggest that preoperative serum E2 levels are negatively associated with pregnancy outcomes in patients with moderate-to-severe IUA.