ObjectiveTo investigate the mechanism of Yangxin Tongmai Formula （养心通脉方， YTF） in trea-ting coronary heart disease with blood stasis syndrome based on DNA methylation. MethodsSeventy-two SD rats were randomly divided into a control group （n=12） and a modeling group （n=60）. The modeling group was subjected to a high-fat diet， intragastric administration of vitamin D3， and subcutaneous injection of isoprenaline to establish the rat model of coronary heart disease with blood stasis syndrome. Forty-one successfully modeled rats were then randomly allocated into model group， YTF low-， medium-， and high-dose groups， and the atorvastatin calcium group， with 8 rats in each group and 1 rat reserved. The YTF low-， medium-， and high-dose groups received YTF at 6， 12， and 18 g/（kg·d） by gavage， respectively. The atorvastatin calcium group received atorvastatin calcium tablets at 1.8 mg/（kg·d） by gavage. The control group and the model group received 0.9% sodium chloride injection at 4 ml/（kg·d） by gavage. All administrations were performed once daily for 3 weeks. Twenty-four hours after the last administration， serum lipid levels including total cholesterol （TC）， triglycerides （TG）， low-density lipoprotein cholesterol （LDL-C）， and high-density lipoprotein cholesterol （HDL-C）， myocardial enzymes including cardiac troponin T （cTnT）， creatine kinase MB （CK-MB）， and lactate dehydrogenase （LDH）， and inflammatory factors including interleukin-1β （IL-1β） and interleukin-10 （IL-10） were detected by ELISA. Pathological changes in myocardial tissue were observed via HE staining. Whole blood DNA methylation sequencing was used to analyze differential methylation gene expression among the control group， model group， and YTF high-dose group. Western Blotting was used to verify the protein levels of the key genes and downstream signaling pathways. ResultsCompared to the control group， the model group showed increased levels of TC， TG， LDL-C， cTnT， CK-MB， LDH， and IL-1β， along with decreased levels of HDL-C and IL-10 （P＜0.05 or P＜0.01）. Compared to the model group， all treatment groups exhibited decreased levels of TC， LDL-C， CK-MB， and LDH， along with increased IL-10 levels. Among these， the high-dose YTF group demonstrated superior efficacy in reducing cTnT levels compared to the other TCM groups （P＜0.05 or P＜0.01）. HE staining indicated that the YTF high-dose group ameliorated myocardial cell swelling， disordered arrangement， pyknosis， and disappearance of nuclei， thereby reducing myocardial cell damage. Whole blood DNA methylation sequencing identified 240 differentially methylated genes shared by the control group， model group， and YTF high-dose group， including 109 hypermethylated and 131 hypomethylated genes； eif2ak3 was identified as a key differentially methylated gene. Compared to the control group， the model group exhibited increased protein levels of eukaryotic translation initiation factor 2 alpha kinase 3 （eIf2ak3）， phosphorylated protein kinase RNA-like endoplasmic reticulum kinase （p-PERK）， activating transcription factor 4 （ATF4）， C/EBP homologous protein （CHOP）， and Bax， along with a decreased level of B-cell lymphoma-2 （Bcl-2） protein （P＜0.05 or P＜0.01）. Compared to the model group， the YTF high-dose group showed decreased protein levels of eIf2ak3， p-PERK， ATF4， CHOP， and Bax， and an increased level of Bcl-2 protein （P＜0.05 or P＜0.01）. ConclusionYTF may regulate key differentially methylated genes such as eIf2ak3 and the PERK/ATF4/CHOP signaling pathway， thereby inhibiting endoplasmic reticulum stress， reducing myocardial cell apoptosis， and exerting therapeutic effects in coronary heart disease blood stasis syndrome.

To investigate the changes in peripheral blood immune cells before and after the onset of septic shock in patients with malignant tumors, and to analyze the relationship between these immune cells and patient prognosis.

The core pathogenesis of pediatric IgA vasculitis （IgAV） is considered to involve qi movement disorder， with the failure of clear-turbid separation and internal generation of turbid pathogens. Accordingly， the viewpoint of "qi disorder causing turbidity" is proposed. In clinical practice， the disease is divided into the acute， persistent， and stable stages. The acute stage is characterized by impaired dispersion of wei （卫） qi and the internal generation of heat turbidity， while the persistent stage by congestion of ying （营） qi and retention of stasis-turbidity， and the stable stage by depletion of pectoral qi with lingering latent turbidity. In clinical practice， regulating qi and transforming turbidity is taken as the basic therapeutic principle， and the self-formulated Tiaoqi Huazhuo Decoction （调气化浊汤） is used as the basic prescription for staged treatment with flexible modifications. Specifically， the acute stage is treated with the method of dispersing wei qi and clearing heat-turbidity； the persistent stage is recommended to harmonize ying qi and purging stasis-turbidity； and the stable stage should focus on securing pectoral qi and venting latent turbidity.

Objective: To assess the status of sexual behaviors, HIV/AIDS knowledge awareness, and novel synthetic drug use among school attending young students in Guangdong Province, so as to provide evidence base for formulating targeted intervention strategies. Methods: From September to December 2024, a convenience sampling method was employed to conduct an anonymous online survey among 41 119 students from 20 higher education institutions and vocational colleges in Guangdong Province. Chi square test was utilized for rate comparisons and univariate analysis, and a multivariate Logistic regression model was applied to analyze factors associated with novel synthetic drug use. Results: The self reported rate of sexual behavior was 5.2%. Among sexually active students, the rates of unprotected sexual intercourse, having temporary sexual partners, and having commercial sexual partners were 32.4%, 34.5%, and 26.3%, respectively. The awareness rate of HIV related knowledge was 75.7%. The overall use rate of novel psychoactive substances(NPS) was 1.0%, and among sexually active students it was 6.5%. Multivariate Logistic regression analysis showed that students with sexual experience ( OR =4.15) and those with HIV testing history ( OR =9.38) had higher risks of NPS use; among sexually active students, those with unprotected sexual intercourse ( OR =6.83) and those with commercial sexual partners ( OR = 4.68 ) had higher risks of NPS use (all P <0.05). Conclusions The HIV/AIDS knowledge level among surveyed students needs further improvement, and high risk sexual behaviors are cross linked with novel synthetic drug use. It is recommended to carry out integrated health education for all students and implement comprehensive targeted interventions for sexually active students.

OBJECTIVE To optimize the extraction process of polysaccharides from Abelmoschus manihot flowers， and to investigate the antioxidant， moisturizing and hygroscopicity activities of the polysaccharides.METHODS The optimal ratio of composite enzymes was determined by orthogonal experiments， and the extraction process of polysaccharides was optimized by single-factor experiments and Box-Behnken response surface methodology， and validated. The scavenging rates of 2，2′-azino-bis （3-ethylbenzothiazoline-6-sulfonic acid） （ABTS） free radicals， hydroxyl free radicals， and superoxide anion free radicals， as well as the total reducing ability of the polysaccharides were investigated by the ABTS method， Fenton-salicylic acid colorimetric method， pyrogallol autoxidation method， and potassium ferricyanide reduction method， respectively. The moisturizing and hygroscopicity activities of the polysaccharides were evaluated by the weighing method.RESULTS The optimal ratio of composite enzymes was 136 000 U of papain， 125 000 U of pectinase，and 5 000 U of cellulase. The optimal extraction process was as follows： enzymatic hydrolysis time of 2.8 h， enzymatic hydrolysis temperature of 57.50 ℃， pH of the sodium dihydrogen phosphate-disodium hydrogen phosphate buffer was 5.5， and solid-to-liquid ratio of 1∶40. The results of three experiments showed that the average polysaccharides extraction rate of 23.595%， with an RSD of 0.90%. The scavenging rates of ABTS free radicals， hydroxyl free radicals， superoxide anion free radicals， and total reducing ability were 81.759%， 87.110%， 54.244%， and 1.129 （the mass concentrations of polysaccharides were 10、 5、 10， and 10 mg/mL， respectively）， respectively. At relative humidity of 43% for 12 h， the moisturizing rate and hygroscopicity rate of polysaccharides were 99.387% and 100.478%， respectively； at relative humidity of 83% for 12 h， they were 99.764% and 100.455%， respectively.CONCLUSIONS The optimal extraction process of polysaccharides from A.manihot flowers based on the composite enzymes is stable and feasible； the polysaccharides obtained under this process have good antioxidant， moisturizing， and hygroscopicity activities.

Objective:To analyze the epidemiological characteristics and changing trends of elderly patients with drug-resistant pulmonary tuberculosis(DR-PTB)at Beijing Chest Hospital, Capital Medical University, in order to provide references for clinical prevention and treatment.Methods:Data were retrospectively collected from all DR-PTB cases hospitalized in the electronic medical record system of Beijing Chest Hospital from 2019 to 2023.The epidemiological characteristics including classification, gender, age, occupation and their changing trends among elderly DR-PTB patients were analyzed.Results:Among 1 981 hospitalized DR-PTB patients, 400(20.19%)were elderly[aged 60-92 years, mean(68.67±7.01)years], showing an overall increasing trend from 2019 to 2023.Mono-resistant PTB was the most common(198 cases, 49.50%), followed by multidrug-resistant PTB(170 cases, 42.50%), extensively drug-resistant PTB(21 cases, 5.25%), and polyresistant PTB(11 cases, 2.75%).Among the elderly DR-PTB patients, 287 cases(71.75%)were male, 200 cases(50.00%)were initial treatment cases, 377 cases(94.25%)were Han nationality, 165 cases(41.25%)were Beijing residents, 185 cases(46.25%)were employees of enterprises and institutions, 109 cases(27.25%)were farmers, 68 cases(17.00%)were unemployed individuals, 202 cases(50.50%)were pathogen-positive cases(smear and culture positive), and 228 cases(57.00%), 331 cases(82.75%), 196 cases(49.00%)were patients with comorbidities, complications, and extrapulmonary tuberculosis, respectively.There were no significant differences between elderly and non-elderly groups in ethnicity, treatment classification, or comorbidities(all P>0.05).However, significantly differences were found in gender ( χ2=12.718, P<0.001), occupation ( χ2=97.500, P<0.001), patient origin ( χ2=119.771, P<0.001), pathogen detection results ( χ2=10.101, P=0.001), and drug resistance patterns ( χ2=15.990, P=0.001).The proportion of elderly DR-PTB patients showed an overall increasing trend, with rises in females(25.64%-28.70%), unemployed individuals(7.69%-20.37%), other occupations(5.13%-19.40%), Han ethnicity(91.03%-99.07%), initial treatment(33.33%-57.41%), smear-negative but culture-positive cases(46.15%-53.70%), polyresistant PTB(1.28%-9.26%), and extensively drug-resistant PTB(1.28%-3.70%). Conclusions:Among elderly DR-PTB patients, the proportions of female, unemployed individuals and other occupations, initial treatment cases, smear-negative but culture-positive cases, polyresistant PTB, and extensively drug-resistant PTB are increasing annually.Future efforts should focus on targeted prevention and treatment for key populations to further reduce the rate of elderly DR-PTB.

People with AIDS are highly prone to opportunistic infections,among which pulmonary infections are the most common,with high incidence and fatality rates.How to effectively prevent or reduce the occurrence of HIV-related lung infections(HRLI)is of great practical significance.From the perspective of traditional Chinese medicine(TCM),HRLI and AIDS share common pathological mechanisms,including qi deficiency,spleen defi-ciency,phlegm-heat or phlegm-dampness obstructing the lungs.Based on the TCM theory of"preventing disease before it occurs",the three-level prevention approach includes:the first step"preventing disease before it occurs"emphasizes strengthening the body's defense mechanisms by tonifying the spleen and benefiting qi,and nourishing the lungs and kidneys to strengthen the exterior and protect the body;the second step"preventing the progression of disease once it occurs"emphasizes the removal of pathogenic factors while strengthening the body's defenses.Based on the principles of syndrome differentiation and treatment in TCM,focuses are kept on the spleen tonifying and phlegm resolving,pathogenic factors dispelling and dampness eliminating,while protecting the spleen and nourishing other organs.The third step"preventing relapse after recovery"emphasizes replenishing deficiencies and enhancing immunity.Adopting the three-level prevention approach and early intervention can reduce the inci-dence of HRLI,which is a new idea for the prevention and treatment of HRLI with TCM.

Objective To explore syndrome and treatment law of TCM in treating pediatric pneumonia convalescence;To provide references for clinical syndrome differentiation and treatment.Methods The relevant literature about TCM in treating pediatric pneumonia convalescence was retrieved from CNKI,SinoMed,VIP,Wanfang Data and PubMed from the establishment of the databases to December 31,2024.Diagnostic basis,syndrome elements and TCM prescription information were extracted.Excel 2021 was used for frequency statistics,SPSS Modeler 18.0 was used for association rule analysis,Gephi 0.10.1 was used to complete complex network analysis,and Origin 2025 was used for data visualization.Results A total of 171 articles were included.Diagnosis basis predominantly involved symptoms,signs and course of the disease.TCM syndrome element distribution predominantly involved the lung,spleen,qi deficiency,yin deficiency,phlegm,dampness,blood stasis and heat,often presenting as a mixture of deficiency and excess patterns.A total of 98 prescriptions were collected,with high-frequency herbs primarily including tonifying and deficiency-replenishing herbs,and phlegm-resolving and antitussive herbs.The herbal properties and tastes were mainly warm,neutral,slightly cold,and sweet,bitter,pungent,primarily associated with the lung and spleen meridians.Complex network analysis identified three core patterns of syndrome-herb interactions.Conclusion The diagnosis of pediatric pneumonia convalescence relies on symptoms,signs and course of the disease as key criteria.The syndrome is often characterized by a deficiency-excess complex.Treatment should integrate the dynamic interactions among syndrome elements and adjust the balance between reinforcing healthy qi and eliminating pathogens based on the proportional weight of deficiency and excess.For deficiency patterns,it is necessary to focus on tonifying qi and nourishing yin.For concurrent syndromes or pathological factors,additional methods such as resolving phlegm,clearing heat,regulating qi,drying dampness,promoting digestion,cooling blood,and activating blood circulation may be incorporated.

China emerges as a major country in nuclear energy development and the application of nuclear and radiologic technology. The diagnosis and treatment of acute radiation syndrom (ARS) caused by external irradiation represent a core function in the country′s medical rescue of nuclear and radiological emergencies. Clinically, ARS manifests hematopoietic, gastrointestinal, cutaneous, and central nervous system syndromes, with specific clinical manifestations, signs, severity, and prognosis strongly correlated with radiation dose. China has established a number of national and provincial centers for treating radiation-induced damage. Nevertheless, most medical staff have limited experience in ARS treatment. This consensus presents a summary of recent experience in treating ARS of China. In combination with recommendations from international organizations such as the World Health Organization (WHO), this consensus proposes key evidence of critical clinical issues of ARS, covering all links in the rescue of external irradiation-induced ARS. Initially, clinical diagnosis, syndromes, and severe degrees should be determined based on clinical symptoms and dose estimates. It is necessary to normalize clinical treatment measures for hematopoietic recovery, gastrointestinal injury treatment, infection control, symptomatic treatment, and multi-organ function preservation. To this end, this consensus offers cautions. This consensus provides principles of treatment with traditional Chinese medicine, psychological intervention, and follow-up. Additionally, it highlights multidisciplinary collaboration. It is recommended that this consensus be applied in relevant treatment centers.

Purpose To analyze the expression of SNAP23 in esophageal squamous cell carcinoma(ESCC)and its influence on invasion of ESCC cells.Methods A total of 41 cases of ESCC and paired normal adjacent tissue(NAT)were collected.The expression and localization of SNAP23 were detected by immunohistochemical EnVision method.The differences of SNAP23 expression levels between ESCC tissues and NAT tissues were compared to analyze the relationship between SNAP23 expression and clinicopathological characteristics.The expression level of SNAP23 in human immortalized esophageal epithelial cells SHEE and ESCC cell lines TE-1,TE-13 and KYSE150 were detected by Western blot.Lentiviral vector transfection technique was used to construct stable transfection cell lines with knock-down and overexpression of SNAP23 gene.The effect of SNAP23 on invasion of ESCC cell line TE-13 was evaluated by cell invasion experiment.Results The expression of SNAP23 in ESCC was significantly higher(53.7％,22/41)than that in the NAT group(19.5％,8/41),the difference was statistically significant(x2=10.303,P＜0.01).The expression level of SNAP23 in ESCC tissues was significantly correlated with maximum tumor diameter(x2=4.193,P＜0.05)and invasion depth(x2=7.264,P＜0.05),but was not correlated with patient gender,age,tumor site,tumor type,pathologic grade,vascular embolus,nerve invasion and lymph node metastasis(P＞0.05).Compared with human immortalized esophageal epithelial cells SHEE,SNAP23 was highly expressed in ESCC cell lines(P＜0.000 1).Compared with the sh-NT group,the invasion of ESCC cell line TE-13 was inhibited when SNAP23 expression was knocked down(P＜0.000 1);compared with the Vector group,the invasion of ESCC cell line TE-13 was enhanced after overexpression of SNAP23(P＜0.000 1).Conclusion SNAP23 is highly expressed in ESCC tis-sue and cell lines,and its expression level in ESCC tissues is positively correlated with tumor maximum diameter and invasion depth;SNAP23 promotes the invasion of ESCC cells.