ObjectiveTo study the effect of Taikong Yangxin Pills on the metabolism of simulated weightless rats based on metabolomics and discuss the metabolism mechanism. MethodsIn the simulated space capsule environment on the ground， the rat model of simulated weightlessness was established by the tail suspension method. Rats were randomly grouped as follows： out-of-capsule control， in-capsule control， model， and high （3.0 g·kg^-1） and low （1.5 g·kg^-1） doses of Taikong Yangxin Pills， and they were administrated with corresponding drugs by gavage for 28 days. The serum levels of endogenous metabolites in rats were determined by ultra-performance liquid chromatography-quadrupole time-of-flight mass spectrometry （UPLC-Q-TOF/MS）. The obtained data were processed by principal component analysis （PCA） and orthogonal partial least squares-discriminant analysis （OPLS-DA） to screen for differential metabolites and potential biomarkers. MetaboAnalyst 5.0 was used for pathway enrichment analysis to explain the metabolic regulation mechanism of the drug. ResultsCompared with the out-of-capsule control group， the in-capsule control group showed elevated levels of thirteen metabolites， including 14-hydroxyhexadecanoic acid， linoleic acid， and α-linolenic acid （P<0.05）， which suggested that the space capsule environment mainly affected the metabolism of α-linolenic acid and linoleic acid in the rats. Compared with the in-capsule control group， the model group showed lowered levels of fourteen metabolites， including 4-imidazolone-5-propionic acid， isocitric acid/citric acid， and L-tyrosine （P<0.05）， which were recovered after the treatment with Taikong Yangxin pills （P<0.05）. The pathway enrichment analysis revealed that weightlessness induced by tail suspension and drug intervention mainly involved the phenylalanine， tyrosine， and tryptophan biosynthesis， tyrosine metabolism， histidine metabolism， and citric acid cycle. ConclusionThe simulated space capsule environment and simulated weightlessness induced by tail suspension can both affect the metabolism level of rats. Taikong Yangxin pills can ameliorate the metabolic abnormality in the rat model of weightlessness by regulating various amino acids and energy metabolism-related pathways.

The knowledge graph has the characteristic of visualizing structural knowledge and has gradually become a research hotspot in the field of TCM diagnosis and treatment.This article reviewed the development trend and construction techniques of knowledge graph,summarized its application status in the field of TCM diagnosis and treatment,and provided a comprehensive review from the aspects of basic knowledge of TCM,inheritance of experience of renowned doctors,TCM question answering systems,and exploration of auxiliary decision-making.It also summarized the problems of knowledge graph technology in solving the informationization and intelligence process of TCM,and discussed and prospect the research and application directions of knowledge graph in the field of informationization and intelligence of TCM based on the characteristics of TCM knowledge.

The knowledge graph has the characteristic of visualizing structural knowledge and has gradually become a research hotspot in the field of TCM diagnosis and treatment.This article reviewed the development trend and construction techniques of knowledge graph,summarized its application status in the field of TCM diagnosis and treatment,and provided a comprehensive review from the aspects of basic knowledge of TCM,inheritance of experience of renowned doctors,TCM question answering systems,and exploration of auxiliary decision-making.It also summarized the problems of knowledge graph technology in solving the informationization and intelligence process of TCM,and discussed and prospect the research and application directions of knowledge graph in the field of informationization and intelligence of TCM based on the characteristics of TCM knowledge.

OBJECTIVE To explore the epidemiological characteristics of common allergens among children with al-lergic rhinitis(AR)in a children's specialized hospital of Beijing.METHODS A total of 2120 children who met the diagnostic criteria of AR and were treated in otolaryngology department of Beijing Jingdu Children's Hospital from 2021 to 2023 were recruited as the research subjects.The specific immunoglobulin E(sIgE)of allergens was de-tected by western blot quantitative assay.The positive rates of the allergens were statistically analyzed according to the age,sex and years.The epidemiological characteristics and changing trends were observed.RESULTS The pos-itive rate of allergens was 47.78％among the 2120 children,in whom multiple allergies polysensitization were pre-dominant;the positive rate of allergens and polysensitization rate were the highest among the population aged be-tween 1 and 7 years old.The inhalational allergens were dominant,and the positive rate of the Candida group was highest.The positive rates of inhalant allergens and ingested allergens reached the peak at the age of 1-7 and then declined with age;milk and egg white were the two types of predominant ingested allergens in childhood.Among the 2120 children,there were significant differences in the positive rates of allergens between the male and the fe-male,and the positive rates of the male were higher than those of the female(P＜0.001).The positive rates of al-lergens generally showed upward trends during the 3 years,the positive rates of the inhalant allergens such as mugwort,cat hair and dog dandruff ascended by a large margin,and the positive rates of the ingested allergens such as milk,egg white and egg yolk showed remarkable rising trends.CONCLUSIONS The causes of AR are complicated.There are a variety of factors affecting the allergen test.The epidemiological characteristics of the al-lergens among the AR children are observed from multiple perspectives,which may provide references for preven-tion and treatment of the children with AR.

This article procides a review of the current research status of the application of traditional Chinese medicine in manned spaceflight:(1)Current status of theoretical research on traditional Chinese medicine in aerospace;(2)The research and application status of traditional Chinese medicine diagnostic technology in aerospace;(3)Current status of traditional Chinese medicine intervention research on aerospace medicine issues;(4)The current status of traditional Chinese medicine non pharmacological intervention research on aerospace medicine issues;(5)The application status of traditional Chinese medicine in China's manned space missions.Looking ahead to the future,we aim to build a discipline of traditional Chinese medicine in space from the aspects of theoretical establishment,technological method innovation,and product development for manned lunar landing and deep space exploration missionss.

With the ongoing development of nuclear energy,radiotherapy,and space exploration,ionizing radiation poses a growing threat to human health.Studies have confirmed that high-intensity or prolonged exposure can lead to apoptosis,genetic damage,immune dysfunction,and multisystem disorders,underscoring the urgent need for effective protective strategies.This review aims to explore the molecular mechanisms of traditional Chinese medicine(TCM)in radiation protection and assess its potential applications in extreme environments such as aerospace.A systematic literature review was conducted to summarize existing research on anti-radiation effects of single herbs,compound prescriptions,and Chinese patent medicines.The pharmacological features and action mechanisms of heat-clearing and detoxifying,tonifying,blood-activating,and tranquilizing herbs were analyzed,with emphasis on their applications in radiotherapy support and aerospace radiation protection.TCM exerts radioprotective effects through multiple biological pathways,including antioxidation,free radical scavenging,DNA repair,immune regulation,and tissue regeneration.Some Chinese patent medicines have been clinically applied as adjuncts to chemo-and radiotherapy,demonstrating benefits in reducing side effects and improving treatment tolerance.Certain herbal components have also shown promising potential in space radiation protection research.TCM has significant potential in radiation protection,particularly in high-risk settings such as spaceflight,where it offers integrated regulatory and protective effects.Future research should focus on elucidating mechanisms,standardizing efficacy evaluation,and promoting clinical translation to support its broader application in nuclear energy,medical radiotherapy,and deep space exploration.

Objective Observe the impact of Qang Gu Kang Wei extraction(KW)on skeletal muscle atrophy in simulated weightlessness rats by regulating endoplasmic reticulum stress and mitochondrial fusion.Methods SD rats were randomy divided the control group(Control),the simulated weightlessness group(TS),and the KW group(TS+KW).Rats were treated with KW with or without tail suspension(TS)for 28 days,and the cross-sectional areas of the gastrocnemius muscle were compared with a control group.The expression levels of endoplasmic reticulum stress(ERS)and key proteins involved in mitochondrial fusion were also analyzed.Results KW treatment reduced the loss of muscle cross-sectional area caused by TS.TS increased the protein expression of glucose-regulated Protein 78(GRP78)and components of the ERS signaling pathways,while KW treatment reduced this increase.TS also inhibited the expression of mitofusin 2(MFN2),which was increased by KW treatment.Additionally,KW treatment promoted the interaction between GRP78 and the endoplasmic reticulum protein sigma-1 receptor(Sig-1R).Conclusion KW may attenuate muscle atrophy caused by simulated weightlessness by regulating ERS and mitochondrial fusion fusion.

Objective Hypobaric chamber and simulated weightless bed are essential methods for aerospace medical research,and conducting state assessment of volunteers before and after hypobaric chamber and simulated weightless bed tests is an essential guideline for aerospace implementation medicine.To further improve the efficiency of human condition assessment,in addition to the conventional biochemical and physiological indicators,the human oral exhaled gas can be used for condition assessment,and the olfactometry acquisition equipment and analysis software can collect and detect most volatile gases to complete the human oral exhaled gas data acquisition.Conducting comparative analysis of olfactory mapping data from different populations may be a means to assess the status of the body.Methods The olfactometry acquisition equipment was used to collect the oral exhaled breath olfactometry profiles of the general population,hypobaric cabin volunteers,and ambulatory volunteers.The olfactometry analysis software was used to calculate the 12 eigenvalues of the olfactometry profiles and the t-SNE downscaling,and the radar plots were used to analyze the olfactometry profiles of the general population,low-pressure cabin volunteers,and ambulatory volunteers respectively.A comparative analysis of different populations was conducted.Results(1)The t-SNE mapping data of the general population and the ambulatory volunteers were almost indistinguishable;(2)the t-SNE mapping data of the hypobaric cabin volunteers and the general population had a slight overlap,but the distinguishability of the vast majority of the t-SNE mapping data was obvious;(3)the t-SNE mapping data of the hypobaric cabin volunteers and the ambulatory volunteers were distinguishable with no overlap,and the ambulatory t SNE data are highly aggregated,and the distribution of t-SNE data in low-pressure cabin is more discrete;(4)there are 2-3 sensors with large eigenvalues and a large range of variation for both low-pressure cabin volunteers and recumbent volunteers after training activities,and the common sensor with a large range of variation is S6.Conclusion Olfactory diagnostic analysis mapping may be a means to assess the health status of the body and may be useful for spaceflight health status assessment in the future.The analysis and application of flight health state assessment can be a reference in the future.

This study aims to understand the epidemic distribution characteristics,antimicrobial resistance,virulence genes,and biofilm adhesion ability of Enterococcus in yaks on the Tibetan plateau.Three hundred and forty-six fresh yak fecal samples and 311 milk samples were collected from four provinces on the Tibetan plateau(Xizang,Sichuan,Gansu,Qinghai),totaling 657 sam-ples.Bacterial isolation and identification were conducted,followed by 16S rDNA gene detection and the construction of a systematic evolutionary tree.The isolated strains were tested for antimi-crobial resistance and virulence genes using PCR,and sensitivity tests were performed using 18 types of antibiotics.The biofilm adhesion ability of the isolated bacteria was determined using an improved semi-quantitative crystal violet staining method.The results showed that the total isola-tion rate of Enterococcus was 32.27％,with Sichuan having the highest at 60.23％,followed by Gansu,Qinghai,and Tibet autonomous region at 42.70％,23.47％,and 18.31％respectively.In terms of sample types,the isolation rate in fecal samples was 36.71％,and in milk samples,it was 27.33％.Through PCR amplification,bands of approximately 1 400 bp were obtained,and 5 strains were selected for evolutionary analysis,forming a separate cluster.Among the 212 isolated strains,a high resistance to clindamycin,quinupristin-dalfopristin,linezolid,levofloxacin,and erythromycin was observed,with various resistance phenomena,accounting for 60.85％.Only 5 out of 12 resist-ant genes were detected,namely erm(B),tet(L),tet(O),tet(M),and ant(6)-Ia.All 13 virulence genes were detected in Enterococcus,with detection rates in the range of 5.19％to 95.76％,where cpd was 95.75％,gelE was 91.98％,efaA was 86.79％,asal was 86.32％,and the rest ranged from 5.19％to 55.66％.The fsr virulence gene was not detected in Enterococcus from milk sources.Among the isolated strains,3.30％showed medium adhesive ability,48.58％showed weak adhesive ability,and 48.11％showed no adhesive ability.The above research revealed the preva-lence of yak derived Enterococcus,the carrying status of resistance and virulence genes,and the correlation between biofilm phenotypes,laying the foundation for mastering research data on yak-derived Enterococcus in the Tibetan plateau.

BACKGROUND: To evaluate the efficacy and safety of the first cohort of people in China treated with a responsive neurostimulation system (Epilcure TM , GenLight MedTech, Hangzhou, China) for focal drug-resistant epilepsy in this study. METHODS: This multicenter, before-and-after self-controlled study was conducted across 8 centers from March 2022 to June 2023, involving patients with drug-resistant epilepsy who were undergoing responsive neurostimulation (RNS). The study was based on an ongoing multi-center, single-blind, randomized controlled study. Efficacy was assessed through metrics including median seizure count, seizure frequency reduction (SFR), and response rate. Multivariable linear regression analysis was conducted to explore the relationships of basic clinical factors and intracranial electrophysiological characteristics with SFR. The postoperative quality of life, cognitive function, depression, and anxiety were evaluated as well. RESULTS: The follow-up period for the 19 participants was 10.7 ± 3.4 months. Seizure counts decreased significantly 6 months after device activation, with median SFR of 48% at the 6th month (M6) and 58% at M12 ( P  <0.05). The average response rate after 13 months of treatment was 42%, with 21% ( n  = 4) of the participants achieving seizure freedom. Patients who have previously undergone resective surgery appear to achieve better therapeutic outcomes at M11, M12 and M13 ( β  <0, P  <0.05). No statistically significant differences were observed in patients' scores of quality of life, cognition, depression and anxiety following stimulation when compared to baseline measurements. No serious adverse events related to the devices were observed. CONCLUSIONS: The preliminary findings suggest that Epilcure TM exhibits promising therapeutic potential in reducing the frequency of epileptic seizures. However, to further validate its efficacy, larger-scale randomized controlled trials are required. REGISTRATION Chinese Clinical Trial Registry (No. ChiCTR2200055247).
Humans ; Female ; Male ; Drug Resistant Epilepsy/therapy* ; Adult ; Young Adult ; Middle Aged ; China ; Adolescent ; Treatment Outcome ; Quality of Life ; Single-Blind Method ; Seizures ; Electric Stimulation Therapy/methods*