AIM To study the chemical constituents from Citri reticulatae Pericarpium Viride and their anti-triple negative breast cancer activities in vitro.METHODS The ethanolic extract of Citri reticulatae Pericarpium Viride was isolated and purified by silica gel,polyamide,MCI,Sephadex LH-20 and semi-preparative HPLC,then the structures of obtained compounds were identified by physicochemical properties and spectral data.The anti-triple negative breast cancer activities were screened by SRB assay,and their effects on the proliferation of triple negative breast cancer cell lines HCC1806,HCC1937 and MDA-MB-231 in vitro were evaluated.RESULTS Twenty compounds were isolated and identified as nobiletin(1),tangeritin(2),5,4'-dihydroxy-7,8-dimethoxy flavonoid(3),naringenin(4),artemetin(5),5-demethynobiletin(6),3,5,6,7,8,3',4'-pentamethoxy flavonoid(7),5,4'-dihydroxy-3,6,7,8,3'-pentamethoxyflavone(8),xanthomicrol(9),p-hydroxycinnamic acid(10),5,4'-dihydroxy-6,7,8,3'-tetramethoxyflavone(11),pectolinarigenin(12),4'-dihydroxy-5,6,7-tetramethoxyflavone(13),hispidulin(14),4',5,6,7-tetramethoxy-flavone(15),1-methyl-4-(prop-1-en-2-yl)cyclohexane-1,2-diol(16),umbelliferone(17),5-hydroxymethyl furfural(18),hydroquinone(19),1H-indole-3-carbaldehyde(20).Compound 8 showed a significant inhibitory effect with the IC50 value of(5.36±0.24)μmol/L on HCC1806 cells.CONCLUSION Compound 20 is isolated from genus Citrus for the first time,8,12-13,16-17 are isolated from this plant for the first time.Compound 8 show inhibitory effects on the proliferation of HCC1806,HCC1937 and MDA-MB-231 cells in vitro and have the strongest activities.Compounds 3-4,11-12,15,17 and 19 show strong inhibitory effect on HCC1806 cells.Compounds 15,19 also inhibit the proliferation of HCC1937 cells in vitro.

With the rapid development of generative artificial intelligence(GAI)technologies,their widespread application in academic research and writing is continuously expanding the boundaries of sci-entific inquiry.However,this trend has also raised a series of ethical and regulatory challenges,inclu-ding issues related to authorship,content authenticity,citation accuracy,and accountability.In light of the growing involvement of AI in generating academic content,establishing an open,controllable,and trustworthy ethical governance framework has become a key task for safeguarding research integrity and maintaining trust within the academic community.This expert consensus outlines ethical requirements across key stages of AI-assisted academic writing-including topic selection,data management,citation practices,and authorship attribution.It aims to clarify the boundaries and ethical obligations surrounding AI use in academic writing,ensuring that technological tools enhance efficiency without compromising in-tegrity.The goal is to provide guidance and institutional support for building a responsible and sustainable research ecosystem.

Objective To develop the Expert Consensus on Sensitive Indicators for Assessment of the Quality of Nursing in Operating Theatre and provide a scientific and practical guidance for improving the quality of nursing in operating theatre.Methods The writing team established by the Operating Room Nursing Professional Committee of Guangdong Nursing Association conducted systematic literature retrieval and screening,and used the updated clinical Guidelines for Research and Evaluation Ⅱ in UK 2017.AGREE Ⅱ and the evidence evaluation system of the Australian JBI(Joanna Briggs Institute,JBI)Evidence-Based Health Care Center evidence level system(2016 Edition)comprehensively analyzed the evidence related to the sensitive indicators for evaluating the quality of operating room nursing and the suggestions of the writing group members.The first draft was formed based on the three-dimensional quality evaluation theoretical framework of"structure-process-result".Through the Delphi method,after two rounds of expert consultations and members'votes,the first draft was deeply revised and improved.Results Based on the three-dimensional quality evaluation theoretical framework of"structure-process-outcome"proposed by American scholar Donabedian,the expert consensus finally included five primary indicators:basic nursing quality,quality indicators of patient safety,quality indicators of hospital infection control,quality indicators of medication and safety management,and quality indicators of specialised nursing in operating theatre.The secondary indicators consisted of one structural indicator(management of commonly used instrument and equipment in operating theatre)and 17 process indicators(e.g.,infusion and blood transfusion management,body temperature management,etc.).The tertiary indicators included 26 process indicators and 11 outcome indicators(e.g.,incidence of adverse reactions of infusion during surgery,incidence of intra-operative hypothermia,etc.).Conclusion The evidence-and guideline-based Expert Consensus on Sensitive Indicators for Assessment of the Quality of Nursing in Operating Theatre based on eviclence and guidelines was established through rigorous evidence-based methods.It is operational and practical,and offers theoretical support and practical guidance for the managers of operating theatre to improve the quality of nursing.

Objective To investigate the role of poly(rC)-binding protein 1(PCBP1)in cadmium(Cd)-induced ferroptosis in mouse neuroblastoma Neuro-2a(N2A)cells.Methods N2A cells were exposed to a concentration gradient of CdCl?(0,1,2,4 μmol/L)for 72 h.Cell viability was assessed by trypan blue staining.Western blotting was employed to detect the expression of ferroptosis-related proteins(GPX4,HMOX1,ACSL4)and PCBP1.Intracellular Fe2? level and lipid peroxidation were detected using FerroOrange and BODIPY581/591 C11 probes,respectively.Ferrostatin-1(Fer-1),a ferroptosis inhibitor,was applied to confirm the critical role of ferroptosis in Cd-induced cytotoxicity.Molecular docking was performed to elucidate the interaction between PCBP1 and ferritin,as well as the binding sites of Cd2?.PCBP1 overexpression plasmid was further constructed for functional validation.Results Cd exposure suppressed cell viability in N2A cells in a dose-dependent manner(P<0.01),significantly down-regulated GPX4 expression(P<0.05),up-regulated HMOX1 expression(P<0.01),and induced Fe2? overload and lipid peroxidation(P<0.01).Molecular docking revealed that Cd2? directly bound to the KH2 domain of PCBP1 and then co-localized on the outer surface of ferritin heavy chain.Overexpression of PCBP1 markedly reversed Cd-induced Fe2? accumulation,GPX4 down-regulation,lipid peroxidation,and cell death.Conclusion Cd exposure disrupts PCBP1-mediated iron homeostasis via transcriptional suppression and competitive displacement of metal ions,and then synergistically drives Fe2? overload-triggered ferroptosis cascades,ultimately leading to neurotoxicity.Targeting PCBP1-mediated iron homeostasis can effectively mitigate Cd-induced neurotoxicity,and may serve as a novel therapeutic strategy.

Objective To explore the networked association among the dimensions of self-efficacy in patients with rheumatoid arthritis(RA)and to identify core efficacy and bridge efficacy,and provide a basis for formulating precise nursing intervention strategies.Methods A total of 652 RA patients admitted in our hospital from September 2024 to January 2025 were enrolled with convenience sampling.The general information questionnaire and Rheumatoid Arthritis Self-Efficacy Scale(RASE)were used for assessment.Exploratory factor analysis was used to extract efficacy symptom clusters.With aid of R project,network analysis was employed to construct an association network among efficacy dimensions to calculate centrality indicators(strength,closeness,betweenness)to identify core efficacy and bridge efficacy.Results Exploratory factor analysis extracted 7 efficacy symptom clusters,with a cumulative variance contribution rate of 64.539%(P<0.001).Network analysis showed that the network density was 0.143,suggesting that there were moderate correlations among the self-efficacy dimensions."Relaxation efficacy 1(r1)"and"pain efficacy 1(a1)"had the strongest correlation(r=0.73).Interpersonal efficacy 2(i2)had the highest intensity centrality(6.88),and relaxation efficacy 3(r3)had the highest tightness(0.0125),and medication efficacy 1(m1)had the highest mediation(116),which were the core efficacy and bridge efficacy in this network group.Conclusion There are complex network-like correlations among the various dimensions of self-efficacy in RA patients.Interpersonal efficacy is the core driving factor,while relaxation and medication efficacies play the bridging role,jointly influencing the overall level of patients'self-management ability.

Arsenic is a semi-metal,and lipid-soluble arsenic compounds are one of the widespread forms in the environment and food chain,but there is a lack of standards for lipid-soluble arsenic compounds,which is one of the bottlenecks in the current analytical detection and toxicological studies of organic arsenic.In this study,four saturated arsenic-containing hydrocarbons,AsHC 318,AsHC 332,AsHC 346,and AsHC 374(The number is relative molecular mass),were successfully synthesized in three steps by using dimethylarsinic acid,potassium iodide,sodium hydroxide,and four brominated alkanes(1-Bromotetradecane,1-bromopentadecane,1-bromohexadecane,and 1-bromooctadecane)as raw materials.The structures of these four saturated arsenic-containing hydrocarbons were characterized by proton nuclear magnetic resonance(1H NMR)spectroscopy,13C nuclear magnetic resonance(13C NMR)spectroscopy,and high-resolution mass spectrometry(HR-MS).The yields of the method were 8%-10%,and the synthesized compounds could be used in subsequent toxicity evaluation experiments to assess the toxic effects and mechanisms of action of arsenic-containing hydrocarbons.This study provided an effective method for synthesis of arsenic-containing hydrocarbons,enriching the synthesis methods of arsenic-containing hydrocarbons,and provided raw materials for the subsequent toxicological studies of arsenic-containing hydrocarbons.

Widespread utilization of glyphosate has led to environmental residues,posing potential threats to ecological systems and human health.Traditional methods for detection of glyphosate are limited by specialized equipment and operational techniques,resulting in inefficient responses.Therefore,it is urgent to develop a convenient,sensitive and accurate detection method for detection of glyphosate.Herein,a new naphthalenesulfonamide-based"Turn-on"fluorescent probe was synthesized using 2-chloroaniline and dansyl chloride as raw materials through a one-step process,which showed a good linear relationship between the glyphosate concentration in concentration range of 0.003-70 μmol/L and the fluorescence intensity(R2=0.995),with a detection limit of 2.73 nmol/L(S/N=3).Analytical techniques such as nuclear magnetic resonance(NMR)spectroscopy and high-resolution mass spectrometry(HRMS)were used to investigate the interaction mechanism between the fluorescent probe and glyphosate.The results indicated that a nucleophilic substitution reaction occurred between the probe and the secondary amine(—NH—)of glyphosate,inducing a photoinduced electron transfer(PET)effect which enhanced the fluorescence intensity by 11.2 times.The probe showed good anti-interference ability towards coexisting metal ions,anions and pesticides in water.When applied to determination of glyphosate in the samples such as tap water,river water(Xiangxi River Reservoir),soil,soybeans,and corn,the spiking recoveries ranged from 94.7％to 109.9％,demonstrating the high accuracy and broad applicability of this detection method.A portable test strip based on this fluorescent probe was developed for rapid semi-quantitative analysis of glyphosate.The developed method was rapid,sensitive,and portable,providing theoretical and technical support for on-site measurement of environmental contaminants.

Objective:To explore the feasibility of transvaginal core needle biopsy for pelvic masses under finger guidance during a vagino-recto-abdominal examination.Methods:The clinicopathological data and follow-up information of 29 patients with pelvic masses who underwent transvaginal core needle biopsy under finger guidance during a vagino-recto-abdominal examination at Affiliated Hospital of Southwest Medical University from January 2020 to July 2024 were collected, and the safety and diagnostic accuracy of the procedure were retrospectively analyzed.Results:(1) A total of 29 patients with pelvic masses were enrolled in this study, with a median age of 50 years (range: 29-73 years), and a median tumor diameter of 3.9 cm (range: 2.7-13.3 cm). Among these patients, 7 were newly diagnosed, and 22 were follow-up. The pre-procedure disease types included 21 patients (72%, 21/29) cervical cancer, 6 patients (21%, 6/29) epithelial ovarian cancer, and 2 patients (7%, 2/29) other suspected gynecologic tumors. (2) Among 29 patients with pelvic masses, 8 cases (28%, 8/29) were diagnosed with benign diseases according to core needle biopsy pathological findings, and 1 case suggested possible residual cervical cancer in the parametrial region by contrast-enhanced magnetic resonance imaging after radical chemoradiotherapy 3 months, while the result of core needle biopsy for this patient was negative, with follow-up after 1 year revealed progression of the lesion in the right parametrial area. Another patient underwent fine-needle aspiration cytology, which suggested gastrointestinal stromal tumor, requiring differentiation from endometriosis, and core needle biopsy pathology confirmed endometriosis, with follow-up at 6 months revealed no evidence of malignancy in this patient. The remaining 6 patients with benign diagnoses had follow-up periods exceeding 1 year without imaging or clinical evidence of local lesion progression or malignancy. Among the 21 patients (72%, 21/29) diagnosed with malignant tumors by core needle biopsy, 14 cases were suspected cases of residual or recurrent cervical cancer, 6 cases had advanced ovarian cancer, and 1 case had rectal cancer metastasis, with all biopsy diagnoses being consistent with preoperative clinical findings and imaging results. The overall diagnostic accuracy of the core needle biopsy was 97% (28/29). Among the 7 newly diagnosed patients, the diagnostic accuracy was 7/7, while it was 95% (21/22) for the 22 follow-up patients, with no statistically significant difference observed between the two groups ( P=1.000). (3) All 29 patients with pelvic masses successfully underwent transvaginal core needle biopsy guided by vagino-recto-abdominal examination. Among them, 28 cases (97%, 28/29) reported tolerable pain during the procedure, while 1 case (3%, 1/29) experienced transient syncope at the end of the procedure due to pain, which resolved within seconds. Vaginal bleeding exceeding 50 ml occurred in 3 patients (10%, 3/29) during paracervical tissue sampling, with the maximum blood loss being 150 ml, and hemorrhage was successfully controlled using vaginal tamponade. The overall incidence of adverse events during the core needle biopsy procedure was 14% (4/29). Conclusion:Transvaginal core needle biopsy for pelvic masses guided by vagino-recto-abdominal examination is a simple, safe, and accurate diagnostic method, suitable for patients with gynecologic malignancies, non-gynecologic malignancies suspected of pelvic mass metastasis, and other benign pelvic lesions.

Objective:To establish the normal reference value of the left ventricular remodeling index（RI）in healthy adults，and to evaluate the phenotypes of RI in various left ventricular geometries and its relationship with left ventricular systolic and diastolic functions in asymptomatic hypertensive patients.Methods:A retrospective study design was employed，906 healthy Han Chinese volunteers were selected as the control group from the multicenter study "Echocardiographic Measurements in Normal Chinese Adults"（EMINCA），which was conducted in 2012. The normal reference range of left ventricular RI was established based on the 95% CI（ xˉ ± 1.96 s）. Statistical analyses were conducted to evaluate differences in RI across age groups and between genders. A total of 340 asymptomatic hypertensive patients in the Department of Health Management，Sichuan Provincial People's Hospital from July 2023 to March 2024 were prospectively included as the hypertension group. Conventional echocardiography and two-dimensional speckle tracking imaging were used to assess left ventricular structure and function. Parameters such as left ventricular mass index（LVMI），RI，relative wall thickness（RWT），the ratio of early diastolic mitral inflow velocity to the average early diastolic mitral annular velocity（E/e'），and the ratio of early diastolic to late diastolic mitral inflow velocities（E/A）were calculated. Differences of these parameters between the hypertension group and the healthy control group were compared. The hypertension group was stratified into 3 subgroups based on left ventricular posterior wall thickness at end-diastole（LVPWd）and RI：the non-LV hypertrophy group，the left ventricular hypertrophy with normal RI group，and the left ventricular hypertrophy with low RI group. Relevant parameters were compared among these subgroups，and the statistical significance of the differences was analyzed. Pearson correlation analysis and multiple linear regression analysis were performed to explore the relationships between left ventricular RI and GLS，LVEF，the average mitral annular peak systolic velocity（s'），e'，E/e'，E/A. Results:In the healthy control group，RI showed a declining trend with increasing age in both sexes. Furthermore，the RI was significantly higher in the female group compared to the male group（ P<0.001）. Compared with the healthy control group，LVMI and E/e' increased while RI，e' and s' decreased in the hypertension group（all P < 0.001）. Among the 3 subgroups of the hypertension group，compared with the other two groups，LVMI and Ｅ/e' increased while absolute GLS and s' reduced in the left ventricular hypertrophy with low RI subgroup（all P <0.001）. Pearson correlation analysis revealed that RI was negatively correlated with GLS and E/e'（ r=-0.457，-0.281；all P < 0.001），and positively correlated with LVEF，e'，s' and E/A（ r=0.229，0.394，0.150，0.172；all P < 0.05）. Multivariate linear regression analysis demonstrated that left ventricular RI was independently associated with GLS，LVEF，e'，s'，E/e' and E/A. Conclusions:The normal reference range of left ventricular RI tends to decrease with age and is typically higher in females than in males. In asymptomatic patients with primary hypertension，RI，systolic and diastolic functions of the left ventricular are lower，while LVMI is higher. Among these patients，functional impairment is more pronounced in patients with left ventricular hypertrophy and reduced RI. This indicates that left ventricular RI may offer an imaging basis for further classification and stratification of structural and functional abnormalities in the left ventricle of asymptomatic hypertensive patients.

Objective:Exploring the diagnostic and therapeutic points of pectoralis minor muscle transection for the treatment of pectoralis minor syndrome, as well as the differences between pectoralis minor syndrome and thoracic outlet syndrome.Methods:A retrospective summary and analysis were conducted on the clinical data, surgical methods, and prognosis of patients with pectoralis minor syndrome who underwent thoracic and cardiovascular surgery at the Second Affiliated Hospital of Southwest Medical University from January 2012 to December 2022. The literature was reviewed, and the clinical data, surgical methods, and prognosis of thoracic outlet syndrome during the same period were combined to analyze the differences between pectoralis minor syndrome and thoracic outlet syndrome.Results:All patients underwent surgical resection of the pectoralis minor muscle, with significant pain relief, disappearance of clinical symptoms, no surgical complications, and a good prognosis.Conclusion:Pectoral muscle syndrome is a disease independent of thoracic outlet syndrome, with a high rate of missed diagnosis and misdiagnosis. Comprehensive preoperative pain localization and closed treatment, clear diagnosis, and cutting of the pectoralis minor muscle are effective methods for treating this disease.