Blumea balsamifera （L.） DC Oil Alleviates LPS-Induced Inflammatory Response in Macrophages by Affecting Arachidonic Acid Metabolism Via NF-κB Nonclassical Pathway / 中山大学学报(医学科学版)

ObjectiveTo study the anti-inflammatory effects of Blumea balsamifera （L.） DC oil （BBO） based on nuclear factor kappa-B （NF-κB） nonclassical and arachidonic acid （AA） pathway. MethodsEffects of BBO on the production of slow reacting substance of anaphylaxis （SRS-A） were detected by the ileal smooth muscle method. The contents of prostaglandin E2 （PGE2） and leukotriene B4 （LTB4） in lipopolysaccharides （LPS） -induced macrophages were detected by ELISA kit. The expression of COX-2， 5-LOX， FLAP and RelB were detected by qRT-PCR. Western blot was performed to detect the effects of BBO on the level of NF-κB nonclassical pathway proteins TNF receptor associated factor 3 （TRAF3）， TNF receptor associated factor 2 （TRAF2）， NF-κB-inducing kinase （NIK）， p100 and RelB. ResultsThe contractile tension of guinea pig ileum was reduced （P<0.001）， and the SRS-A production inhibition rate reached 65.34% at 1mg·mL-1 BBO concentration. Compared with LPS group， BBO reduced the concentrations of PGE2 （P<0.05） and LTB4 （P<0.05）， and decreased the expressions of COX-2 （P<0.05）， 5-LOX （P<0.05） and FLAP （P<0.05） in AA pathway at concentrations of 40-80 μg·mL-1. Moreover， 40-80 μg·mL-1 BBO decreased the concentrations of TRAF3 （P<0.05）， TRAF2 （P<0.05）， and NIK （P<0.05）， and further inhibited the phosphorylation of p100 （P<0.05）， as well as the level of the transcription factor RelB in genes （P<0.05） and proteins （P<0.05） in nonclassical NF-κB pathway， whereas BBO did not cause such changes. ConclusionBBO may potentially exert its anti-inflammatory effects by suppressing the regulatory proteins TRAF3 and TRAF2 and the transcription factor RelB in NF-κB nonclassical pathway. The inhibitory action extending to the induction kinase function of NIK， further hindering the phosphorylation of p100 and its binding with the transcription factor RelB. Consequently， downstream elements in the AA pathway， including the pivotal rate-limiting enzymes COX-2， 5-LOX and FLAP， were altered. This modulation influences the levels of inflammatory mediators such as PGE2 and LTB4.

The influencing Factors of Doctor-patient Shared Decision Making: A Qualitative Study / 中国医学伦理学

To explore the barriers and facilitators of shared decision making, 23 clinicians were selected for semi-structured interviews by purpose sampling and convenience sampling with phenomenological methods in qualitative research, and 7-step of Colaizzi was used to analyze the interview data. Three themes and twelve subthemes were extracted, included: individual factors of doctors (role cognition, perceived outcomes, communication skills, clinical expertise, cognitive bias) , individual factors of patients (general information, lack of disease knowledge, willingness to participate in decision making) and environmental factors (clinical situation, social environment, resources and social influence) . There were many barriers and facilitators in the implementation of doctor-patient shared decision making. It is necessary to scientifically analyze and actively deal with the influence of each factor, and find reasonable countermeasures to promote the clinical implementation of shared decision making.

Discussion on Difficulties of Ethical Review of DCD Organ Donation and Transplant based on Cases / 中国医学伦理学

The ethics committee of organ transplantation technology and clinical application in a hospital has encountered some difficulties and typical cases in its review work and practice for many years. Sometimes, it is difficult to make a decision in these dilemmas. Based on the previous experience of the hospital in the ethical review of organ donation and transplantation, combined with two typical cases, this paper discussed and analyzed two review points of whether the voluntary unpaid donation and the principle of informed consent were met, and whether the risk-benefit ratio was reasonable, and put forward relevant ethical and legal countermeasure for further research by institutional ethics committees and other parties, in order to provide reference for discussing the practical problems and ethical confusion of ethical review of organ donation and transplantation.

Realistic Consideration and Path Choice: Research on the Integration of Epidemic Narrative into College Students’ Ideological and Political Education / 中国医学伦理学

It takes a long time to repair the social damage caused by a major epidemic, which is both a rebuilding of social order and a long process of social psychology. How to reproduce the collective memory of major epidemic events through narration, start from the reality of the epidemic narrative to the should and finally back to practice, and use epidemic narrative as an educational means and carrier in ideological and political education, it will be a beneficial attempt to realize the unification of knowledge and practice in college students’ ideological and political education in the post-epidemic period. To integrate the epidemic narrative into the ideological and political education of college students, it is necessary to adhere to the mainstream ideological direction of the narrative, unblock the narrative channel, reasonably choose the narrative method and optimize the narrative content, adhere to student-oriented, and give full play to the educational function of students’ individual narration.

Differential Analysis of Erythrocyte Flexibility of PbK173 Artemisinin-sensitive Strains / 中国实验方剂学杂志

ObjectiveTo detect the flexibility differences of Plasmodium berghei K173 （PbK173）-infected red blood cells with varying degrees of sensitivity to artemisinin-based drugs and to preliminarily explore the underlying mechanisms of the differences. MethodA total of 102 specific-pathogen-free （SPF） male C57BL/6 mice were randomly divided into three groups， with 30 mice each in the control group and PbK173-resistant （PbK173-R） group， and 42 mice in the PbK173-sensitive （PbK173-S） group. Except for the control group， the rest groups were vaccinated with 1×107 PbK173-S/PbK173-R infected red blood cells to establish a mouse malaria model. During the administration and recovery periods （control group， PbK173-R/PbK173-S）， dihydroartemisinin （DHA， 40 mg·kg-1） and malaridine （MD， 6 mg·kg-1） were administered continuously for four days. Peripheral blood was taken from the PbK173-S/PbK173-R groups with an infection rate equal to or greater than 20%. Peripheral blood and each organ were taken on the first day at the end of administration （dosing period） and on the fifth day at the end of administration （recovery period）， and blood parameters and organ indices of each group were examined. The osmotic fragility of peripheral blood red blood cells in each group was detected using the red blood cell osmotic fragility test. Western blot was applied to determine the levels of Piezo1 and Band3 proteins in the red blood cell membrane. ResultDuring the administration and recovery periods， there were no significant differences between the PbK173-S MD group and the DHA group. During the administration period， there were no significant differences in hematological parameters between PbK173-S and PbK173-R in the MD group. However， during the recovery period， the red blood cell count， hemoglobin concentration and hematocrit of the PbK173-R group were significantly higher than those of the PbK173-S group （P<0.05） in the MD group. Compared with that of the control group， the osmotic fragility of the PbK173-S/PbK173-R groups was significantly enhanced （P<0.01）， and the osmotic fragility of the PbK173-S group was significantly stronger than that of the PbK173-R group （P<0.01）. The osmotic fragility of red blood cells in the PbK173-S group during the administration period was significantly stronger than that in the control group and PbK173-R group during the administration period （P<0.01）. The osmotic fragility of red blood cells in the PbK173-R group during the recovery period was significantly higher than that in the control group during the administration period and the PbK173-S group during the recovery period （P<0.05）. Compared with those in the control group， the Piezo1 protein and Band3 protein in the red blood cell membrane of the PbK173-S group were significantly reduced （P<0.01）. Compared with those in the PbK173-R group， the Piezo1 protein and Band 3 protein in the red blood cell membrane of the PbK173-S group were significantly reduced. ConclusionThe flexibility of PbK173-infected red blood cells with different sensitivities to artemisinins differed. Plasmodium-infected red blood cells significantly reduced the levels of Piezo1 and Band3 proteins in the red blood cell membrane， and the erythrocyte flexibility exhibited a decreasing trend in the following order： normal group， PbK173-R group， and PbK173-S group.

Analysis of intraoperative frozen section diagnosis of 1 263 pulmonary nodules / 中国胸心血管外科临床杂志

@#Objective    To explore the key points and difficulties of intraoperative frozen section diagnosis of pulmonary diseases. Methods    The intraoperative frozen section and postoperative paraffin section results of pulmonary nodule patients in Beijing Chaoyang Hospital, Capital Medical University from January 2021 to January 2022 were collected. The main causes of misdiagnosis in frozen section diagnosis were analyzed, and the main points of diagnosis and differential diagnosis were summarized. Results    According to the inclusion criteria, a total of 1 263 frozen section diagnosis results of 1 178 patients were included in the study, including 475 males and 703 females, with an average age of 58.7 (23-86) years. In 1 263 frozen section diagnosis results, the correct diagnosis rate was 95.65%, and the misdiagnosis rate was 4.35%. There were 55 misdiagnoses, including 18 (3.44%) invasive adenocarcinoma, 17 (5.82%) adenocarcinoma in situ, 7 (35.00%) mucinous adenocarcinoma, 4 (2.09%) minimally invasive adenocarcinoma, 3 (100.00%) IgG4 related diseases, 2 (66.67%) mucinous adenocarcinoma in situ, 1 (16.67%) atypical adenomatous hyperplasia, 1 (14.29%) sclerosing pulmonary cell tumor, 1 (33.33%) bronchiolar adenoma, and 1 (100.00%) papillary adenoma. Conclusion    Intraoperative frozen section diagnosis still has its limitations. Clinicians need to make a comprehensive judgment based on imaging examination and clinical experience.

Association between temperature and mortality: a multi-city time series study in Sichuan Basin, southwest China

BACKGROUND@#There are few multi-city studies on the association between temperature and mortality in basin climates. This study was based on the Sichuan Basin in southwest China to assess the association of basin temperature with non-accidental mortality in the population and with the temperature-related mortality burden.@*METHODS@#Daily mortality data, meteorological and air pollution data were collected for four cities in the Sichuan Basin of southwest China. We used a two-stage time-series analysis to quantify the association between temperature and non-accidental mortality in each city, and a multivariate meta-analysis was performed to obtain the overall cumulative risk. The attributable fractions (AFs) were calculated to access the mortality burden attributable to non-optimal temperature. Additionally, we performed a stratified analyses by gender, age group, education level, and marital status.@*RESULTS@#A total of 751,930 non-accidental deaths were collected in our study. Overall, 10.16% of non-accidental deaths could be attributed to non-optimal temperatures. A majority of temperature-related non-accidental deaths were caused by low temperature, accounting for 9.10% (95% eCI: 5.50%, 12.19%), and heat effects accounted for only 1.06% (95% eCI: 0.76%, 1.33%). The mortality burden attributable to non-optimal temperatures was higher among those under 65 years old, females, those with a low education level, and those with an alternative marriage status.@*CONCLUSIONS@#Our study suggested that a significant association between non-optimal temperature and non-accidental mortality. Those under 65 years old, females, and those with a low educational level or alternative marriage status had the highest attributable burden.

Research progress of MicroRNA in hypertension and its target organ damage / 中国药理学通报

Hypertension is a risk factor for a variety of cardiovascular diseases, which is an important public health problem in the world today. MiRNAs are a class of highly conserved non-coding small RNAs. In recent years, studies have found that miRNAs are involved in the occurrence and development of hypertension through a variety of ways, causing damage to the important target organs of hypertension, such as heart, brain and kidney. This article reviews the research progress of miRNA in hypertension in recent years, in order to clarify its role in the process of hypertension and target organ damage, and provide ideas for exploring new therapeutic targets of hypertension.

Bendamustine combined with pomalidomide and dexamethasone in relapsed multiple myeloma with extramedullary disease: a multicenter study / 中华血液学杂志

Objective: To evaluate the efficacy and safety of bendamustine combined with pomalidomide and dexamethasone (BPD regimen) in the treatment of relapsed multiple myeloma (MM) with extramedullary disease. Methods: This open, single-arm, multicenter prospective cohort study included 30 relapsed MM patients with extramedullary disease diagnosed in seven hospitals including Qingdao Municipal Hospital. The patients were treated with BPD regimen from February 2021 to November 2022. This study analyzed the efficacy and adverse reactions of the BPD regimen. Results: The median age of the 30 patients was 62 (47-72) years, of which 18 (60% ) had first-time recurrence. The overall response rate (ORR) of the 18 patients with first-time recurrence was 100%, of which three (16.7% ) achieved complete remission, 10 (55.5% ) achieved very good partial remission (VGPR), and five (27.8% ) achieved partial remission (PR). The ORR of 12 patients with recurrence after second-line or above treatment was 50%, including zero patients with ≥VGPR and six patients (50% ) with PR. Three cases (25% ) had stable disease, and three cases (25% ) had disease progression. The one-year progression free survival rate of all patients was 65.2% (95% CI 37.2% -83.1% ), and the 1-year overall survival rate was 90.0% (95% CI 76.2% -95.4% ). The common grade 3-4 hematology adverse reactions included two cases (6.7% ) of neutropenia and one case (3.3% ) of thrombocytopenia. The overall adverse reactions are controllable. Conclusions: The BPD regimen has good efficacy and tolerance in relapsed MM patients with extramedullary disease.

Total glucosides of Rhizoma Smilacis Glabrae: a therapeutic approach for psoriasis by regulating Th17/Treg balance / 中国天然药物

Total glucosides of Rhizoma Smilacis Glabrae (RSG) are selective immunosuppressants that exhibit primary efficacy in the treatment of rheumatoid arthritis through targeted inhibition of activated T cells. In this study, we aimed to investigate the potential application of RSG in the treatment of psoriasis and elucidate its mechanism of action and material basis. Our findings revealed significant improvements upon administration of RSG in an imiquimod (IMQ)-induced psoriasis model. These improvements were characterized by a remarkable increase in the number of tail scales in mice and a substantial amelioration of skin erythema, ulceration, and flaking. By transcriptome sequencing and T-cell flow sorting assay, we identified notable effects of RSG on the modulation of various cellular processes. Specifically, RSG prominently down-regulated the Th17/Treg ratio in damaged skin tissues and reduced the proportion of G2 phase cells. Furthermore, RSG exhibited a stimulatory effect on the proliferation and differentiation of epithelial cells. Of particular interest, we discovered that β-sitosterol, sitostenone, stigmasterol, smiglanin, and cinchonain Ib displayed potent inhibitory effects on the IL-17-mediated inflammatory response in HaCaT cells. In summary, our study highlights the therapeutic potential of RSG in the treatment of psoriasis, attributed to its ability to regulate the Th17/Treg balance. These findings contribute to the development of new indications for RSG and provide a solid theoretical foundation for further exploration in this field.

Integrity and Innovation of Ethical Review in Clinical Research of Traditional Chinese Medicine in the New Era:Practice on the Construction of Ethical Review System in Wuxi Traditional Chinese Medicine Hospital / 中国医学伦理学

Under the background of scientific and technological innovation in the new era, ethical review of traditional Chinese medicine (TCM) is facing new opportunities and challenges. Focusing on how to maintain integrity and innovation in the ethical review work of TCM clinical research in TCM medical institutions, starting from the characteristics of innovation and inheritance of TCM clinical research, this paper discussed the construction of the ethical review system of TCM clinical research, key elements of attention, shortcomings and deficiencies, training and communication, etc. It is also proposed that the joint construction of a Chinese characteristic scientific and technological ethics governance system should consider the unique requirements of modern technological means for the ethical review of scientific and technological projects such as dialectical treatment, re-evaluation of prescription projects, and expansion of indications in clinical research of TCM; innovate the form of review and strengthen the process management of ethical review; scientifically, objectively and impartially evaluate the scientific nature and social value of clinical research projects in TCM; pay attention to the toxic side effects of TCM, especially compound preparations. So as to further improve the procedural norms and quality of ethical review of clinical research of TCM, protect the legitimate rights and interests and safety of subjects, and promote the development of medicine in China.

Clinical Characteristics and Diagnostic Experience of Adult Thyroid Langerhans Cell Histiocytosis with Diabetes Insipidus / 罕见病研究

  Objective  To analyze the clinical characteristics of thyroid LCH to enhance understanding of the disease.  Methods  We retrospectively studied the clinical data from six thyroid LCH patients who hospitalized in Huashan Hospital Affiliated to Fudan University from January 2015 to January 2022.We analyzed the ultrasound and 18F FDG-PET/CT imaging characteristics of thyroid LCH.  Results  The six patients diagnosed (2 males and 4 females) were between 18 and 58 years old.All patients had diabetes insipidus.MRI revealed thickened pituitary stalk.Two cases had central hypothyroidism, while four cases euthyroidism.Three cases tested positive for thyroid antibodies.Ultrasound showed thyroid nodules of TI-RADS 3 in three cases, TI-RADS 4 in two cases, and 1 with nodular goiter.Ultrasound showed that all sic cases indicated low echogenicity, 5 of which clear boundaries, 4 of which uneven echo distribution, 5 of which irregular shape, and noen has calcification.18F FDG-PET/CT indicated high uptake nodules with SUVmax values all above 10.4 cases were diagnosed by surgical excision and the other 2 by coarse-needle aspiration biopsy.When diagnosed, two cases had liver and thymus involvement respectively.One case had lung and bone involvement respectively.After treatment, 4 cases showed that nodular goiter shrank, while the other two with liver involvement progressed fast and no assessment made.  Conclusions  Thyroid LCH presented low echogenicity, clear boundaries, irregular shape, without calcification, and high uptake in 18F FDG-PET/CT.A definite diagnosis of pituitary stalk thicking accompanied by thyroid nodules, especially those with hypoechoic and irregular nodules, can be achieved by coarse-needle aspiration biopsy and langerin-specific pathological staining.

Effect of rhythmic auditory stimulation on gait of patients with cerebral palsy: a systematic review / 中国康复理论与实践

ObjectiveTo systematically review the effect of rhythmic auditory stimulation on gait of patients with cerebral palsy. MethodsRelevant literature on gait improvement of patient with cerebral palsy by rhythmic auditory stimulation were retrieved from Web of Science, PubMed, EBSCO, CNKI and Wanfang database from establishment to December, 2022. Physiotherapy Evidence Database (PEDro) scale was used to evaluate the methodological quality of the articles, and the relevant data was extracted. A systematic review was conducted. ResultsA total of 1 339 literatures were retrieved, and ten were finally included. The patients mainly came from America, Egypt, Israel, South Korea and Greece. The intervention sites were mainly in hospitals and communities, and some patients received home-based intervention. The publication date was mainly after 2010. Adding rhythmic auditory stimulation on the basis of conventional rehabilitation training increased the range of motion of the joints of patients with cerebral palsy; improved the walking speed, step length and stride length; improved the movement mode, and enhanced the intervention effect of gait training. ConclusionRhythmic auditory stimulation is effective on the range of motion, walking speed, step length and stride length of patient with spastic cerebral palsy, which can improve gait.

Supplementary immunization among children attending kindergarten and primary school in Pudong New Area of Shanghai from 2018 to 2021 / 上海预防医学

ObjectiveTo determine the situation of vaccination certificate inspection and supplementary immunization among children attending kindergarten and primary school in Pudong New Area. MethodsThe study was conducted based on the annual report form“vaccination record inspection summary” of all community health service centers in Pudong New Area， Shanghai. Data related to vaccination certificate inspection and supplementary immunization among children attending kindergarten and primary school were retrieved in Pudong New Area from 2018 to 2021 and statistically analyzed. ResultsFrom 2018 to 2021， a total of 1 850 kindergartens and 887 primary schools in Pudong New Area inspected the vaccination certificates of children attending kindergarten and school，with a coverage rate of 100.00%. There were 375 407 children enrolled in kindergarten and primary school.A total of 373 820 children were inspected with an examination rate of 99.58%. The average certificate holding rate among children was 99.48%．The full-course immunization rate of eight national immunization programs vaccines was 94.95%. Furthermore， a total of 73 407 doses of eight national immunization vaccines were supplemented，with an average supplementary rate of 92.95%. The supplement rate increased annually．In terms of supplemented doses，the top three vaccines were meningococcal vaccine， measles vaccine and polio vaccine. As a vaccine of local immunization program in Shanghai， a total of 14 143 doses of varicella vaccine were supplemented with a supplementary rate of 86.99%. ConclusionIn Pudong New Area， vaccination certificate inspection of children attending kindergarten and primary school has been strictly performed . Inspection rate in the kindergartens and primary schools， children's certificate holding rate， full-course immunization rate and supplementary immunization rate remain high.

Effect of Home Blood Pressure Telemonitoring Plus Additional Support on Blood Pressure Control: A Randomized Clinical Trial / 生物医学与环境科学（英文）

OBJECTIVE@#Current clinical evidence on the effects of home blood pressure telemonitoring (HBPT) on improving blood pressure control comes entirely from developed countries. Thus, we performed this randomized controlled trial to evaluate whether HBPT plus support (patient education and clinician remote hypertension management) improves blood pressure control more than usual care (UC) in the Chinese population.@*METHODS@#This single-center, randomized controlled study was conducted in Beijing, China. Patients aged 30-75 years were eligible for enrolment if they had blood pressure [systolic (SBP) ≥ 140 mmHg and/or diastolic (DBP) ≥ 90 mmHg; or SBP ≥ 130 mmHg and/or DBP ≥ 80 mmHg with diabetes]. We recruited 190 patients randomized to either the HBPT or the UC groups for 12 weeks. The primary endpoints were blood pressure reduction and the proportion of patients achieving the target blood pressure.@*RESULTS@#Totally, 172 patients completed the study, the HBPT plus support group ( n = 84), and the UC group ( n = 88). Patients in the plus support group showed a greater reduction in mean ambulatory blood pressure than those in the UC group. The plus support group had a significantly higher proportion of patients who achieved the target blood pressure and maintained a dipper blood pressure pattern at the 12th week of follow-up. Additionally, the patients in the plus support group showed lower blood pressure variability and higher drug adherence than those in the UC group.@*CONCLUSION@#HBPT plus additional support results in greater blood pressure reduction, better blood pressure control, a higher proportion of dipper blood pressure patterns, lower blood pressure variability, and higher drug adherence than UC. The development of telemedicine may be the cornerstone of hypertension management in primary care.

Prevalence and risk factors of metabolic syndrome among adults in Hainan Province / 中国热带医学

@#Abstract: Objective　This study aims to explore the prevalence and risk factors of metabolic syndrome (MS) among the adults in Hainan Province, and to provide scientific basis for MS prevention and control. Methods　A multi-stage cluster random sampling method was applied to select 3 690 permanent residents aged 18 years and above in Hainan Province. The survey was conducted by trained investigators using household appointments and centralized surveys. A questionnaire survey, physical measurement, and laboratory examination were conducted after the collection of blood samples. The processed samples were then tested by a quality-controlled laboratory. Finally, we analysed the prevalence of metabolic syndrome (MS) and its relationship with population characteristics and health-related behaviors. Results　The crude prevalence of MS in the population aged 18 and above in Hainan province was 19.46% and the standardized prevalence was 13.21%, with a higher rate in urban areas (22.21%) than in rural areas (18.13%). The prevalence of MS increased with age (P<0.001), and there were significant differences in MS prevalence among different marital and occupational statuses (P<0.01). Logistic regression results indicated that the age groups of 40-<50 years (OR=2.986, 95%CI:1.355-6.580), 50-<60 years (OR=3.739, 95%CI: 1.715-8.151), 60-<70 years (OR=3.890, 95%CI: 1.769-8.556), 70 years and above (OR=3.927, 95%CI: 1.758-8.771), technical, transportation and production personnel (OR=1.579, 95%CI: 1.033-2.412), retired (OR=1.788, 95%CI: 1.415-2.259), unemployed (OR=1.503, 95%CI: 1.044-2.165), smoking cessation (OR=1.582, 95%CI: 1.162-2.154), insufficient intake of fruits and vegetables (OR=1.196, 95%CI: 1.005-1.422), and insufficient physical activity (OR=1.437, 95%CI: 1.155-1.787) were all associated with the prevalence of MS. Among the investigated subjects, 30.22% of them had one abnormal component, with hyperglycemia being the highest (54.44%); 24.25% of them had two abnormal components, with "hyperglycemia + hypertension" being the highest (33.30%); and 19.46% had three or more components, with "overweight/obesity + hyperglycemia + hypertension" being the highest (24.79%). Conclusions　The prevalence of MS in Hainan Province is on the rise, and effective lifestyle intervention measures are needed to reduce the risk of MS.

Bioinformatics analysis and prokaryotic expression of Strongyloides stercoralis serine protease inhibitor 1 / 中国血吸虫病防治杂志

Objective To predict the structure and antigenic epitope of the Strongyloides stercoralis serine protease inhibitor 1 (Ss-SRPN-1) protein using bioinformatics tools, and to construct prokaryotic expression plasmids for expression of recombinant Ss-SRPN-1 protein, so as to provide the basis for unraveling the function of the Ss-SRPN-1 protein. Methods The amino acid sequence of the Ss-SRPN-1 protein was downloaded from the NCBI database, and the physicochemical properties, structure and antigenic epitopes of the Ss-SRPN-1 protein were predicted using bioinformatics tools, including ExPASy, SWISS-MODEL and Protean. Primers were designed according to the nucleotide sequences of Ss-SRPN-1, and the Ss-SRPN-1 gene was amplified, cloned and sequenced with genomic DNA extracted from the infective third-stage larvae of S. stercoralis as a template. The Ss-SRPN-1 protein sequence was cloned into the pET28a (+) expression vector and transformed into Escherichia coli BL21 (DE) cells for induction of the recombinant Ss-SRPN-1 protein expression. The recombinant Ss-SRPN-1 protein was then purified and identified using Western blotting and mass spectrometry. Results Bioinformatics analysis showed that the Ss-SRPN-1 protein, which was composed of 372 amino acids and had a molecular formula of C1948H3046N488O575S16, was a stable hydrophilic protein, and the subcellular localization of the protein was predicted to be extracellular. The Ss-SRPN-1 protein was predicted to contain 11 dominant B-cell antigenic epitopes and 20 T-cell antigenic epitopes. The Ss-SRPN-1 gene with a length of 1 119 bp was successfully amplified, and the recombinant plasmid pET28a (+)/Ss-SRPN-1 was constructed and transformed into E. coli BL21(DE) cells. The expressed recombinant Ss-SRPN-1 protein had a molecular weight of approximately 43 kDa, and was characterized as a Ss-SRPN-1 protein. Conclusions The recombinant Ss-SRPN-1 protein has been expressed successfully, and this recombinant protein may be a potential vaccine candidate against strongyloidiasis.

Comparison of emotional and behavioral problems of preschool children in only child and multiple child families / 中国学校卫生

Objective@#To explore the emotional and behavioral problems of different only child and multiple child families, and to provide a reference for developing effective parenting styles.@*Methods@#A stratified random cluster sampling method was adopted to investigate 2 647 guardians of preschool children in Tongling City from April to June, 2022. Children s emotional and behavioral problems were evaluated by using the self designed parenting questionnaire and the Children s Strengths and Difficulties Questionnaire (SDQ) parent edition.@*Results@#The abnormal total score detection rate of emotional and behavioral problems of preschool children was 15.5%, and the rate of abnormal peer interaction was the highest (19.5%). In multiple child families, the first born child (17.5%, 20.4%), compared with the second and third child (11.5%, 9.5%), was more likely to exhibit conduct and hyperactivity problems ( χ 2=8.44, 29.75, P <0.01). There were differences in parenting attitudes between only child and multiple child families( χ 2=9.38, P <0.05). The results of the Logistic regression analysis showed that more frequent parent child discussion, the persuasive education and consistent family discipline strategy were negatively related to the emotional and behavioral problems of only children and children in multiple child families ( OR =0.15, 0.49, 0.38; 0.34, 0.40, 0.42, P <0.05). However, harmonious family relationships were only negatively related to emotional and behavioral problems in only children ( OR =0.08, P <0.01), and a higher education level among mothers was negatively related to emotional and behavioral problems in children from multiple child family environments( OR=0.30, 0.45, P <0.05).@*Conclusion@#The emotional and behavioral problems are serious of preschool children in Tongling City, the psychological development of the oldest children from multiple child and only child families should be actively followed, as this would help to promote a better understanding of the development of preschool children s physical and mental health.

Establishment of Poly （I∶C）-induced Cytokine Storm Model in Mice and Intervention Effect of Artesunate and Qingfei Paidu Decoction / 中国实验方剂学杂志

ObjectiveTo observe the intervention effect of artesunate （ART） and Qingfei Paidu decoction （QFPD） on the mouse model of cytokine storm （CS） induced by viral mimic Poly （I∶C）. MethodEighty-four SPF male BALB/c mice were randomly divided into seven groups， with 12 mice in each group. Mice， except for those in the blank group （n=12）， were subjected to CS model induction by tail vein injection of Poly （I∶C） at 15 mg·kg-1， followed by drug treatments of low-dose ART （ART-l， 10 mg·kg-1）， medium-dose ART （ART-m， 20 mg·kg-1）， high-dose ART （ART-h， 40 mg·kg-1）， Qingfei Paidu Decoction （QFPD， 2.4 g·kg-1）， and dexamethasone （DXM， 10 mg·kg-1）. After 6 hours， lung tissues， bronchoalveolar lavage fluid （BALF）， spleen， lung， and peripheral blood were collected. The lung and spleen indexes were calculated and the number of inflammatory cells in BALF was detected. The pathological changes in lung tissues were observed by hematoxylin-eosin （HE） staining and the levels of tumor necrosis factor-α （TNF-α）， interferon-γ （IFN-γ）， interleukin-1β （IL-1β）， and IL-6 in BALF were detected by enzyme-linked immunosorbent assay （ELISA）. The expression of immune cells in BALF and peripheral blood was detected by flow cytometry. ResultThe analysis of lung and spleen indexes showed that compared with the blank group， the model group showed increased lung and spleen indexes to varying degrees （P<0.05）. Compared with the model group， the ART groups showed reduced spleen index （P<0.05） and the ART-l group showed reduced lung index （P<0.05）. Additionally， the QFPD group showed reduced lung and spleen indexes （P<0.05）. ELISA results showed that except for TNF-α， the levels of IFN-γ， IL-1β， and IL-6 in the model group increased compared with those in the blank group （P<0.05）. Compared with the model group， the ART-l group and the QFPD group showed reduced content of TNF-α （P<0.05）， and all groups with drug intervention showed reduced content of IFN-γ， IL-1β， and IL-6 （P<0.05）. The number of inflammatory cells in BALF showed a downward trend in the model group， and the number of cells increased in the groups with drug intervention except for the DXM group （P<0.05）. Flow cytometry showed that compared with the blank group， the model group showed decreased number of CD3 in the peripheral blood （P<0.05）， increased Ly-6G and F4/80 （P<0.05）， decreased expression of CD45， CD3， and F4/80 in BALF （P<0.05）， and increased expressions of Ly-6G （P<0.05）. Compared with the model group， the ART groups and QFPD group showed increased CD45 content in peripheral blood （P<0.05）， decreased Ly-6G and F4/80 content （P<0.05）， increased CD45 and F4/80 content in BALF （P<0.05）， and decreased expression of Ly-6G （P<0.05）. ConclusionART and QFPD have a good protective effect on Poly （I∶C）-induced CS in mice， and the mechanism is related to the effective intervention in immune cell disorder.