Objective:To explore the feasibility of the tumor-targeted near infrared (NIR) fluorescent dye NIR-T for clearly and accurately delineating incisal edge of breast cancer.Methods:Firstly, the breast cancer xenograft subcutaneous tumor was established in BALB/c nude mice, and dye NIR-T was administrated intratumorally to evaluate the tumor-to-normal tissue (T/N) ratio of the incisal edge of breast tumor. Under the guidance of fluorescence signals, the tumor and peritumoral tissues were resected and collected respectively, and the accuracy of the tumor incisal edge delineated by NIR-T was evaluated by pathological analysis. Studies were further performed on fresh isolated human breast tumor tissues. After intratumoral injection of NIR-T, tumor and peritumoral tissues were collected with the guidance of fluorescence signals, and the accuracy of breast tumor incisal edge delineated by NIR-T was evaluated by pathological analysis.Results:Dye NIR-T was able to clearly delineate the incisal margin of subcutaneous breast tumor in BALB/c nude mice with a T/N ratio of up to 15, and was used to successfully guide the rapid resection of the tumor, and subsequent intraoperative pathological analysis confirmed that the tumor was absolutely removed; NIR-T could be used to clearly delineate the resection margin of breast tumors and its precision was determined to be 100% via pathological analysis.Conclusion:The tumor-targeted NIR fluorescent dye NIR-T was able to clearly and accurately delineate the resection margin of breast tumors, which would promote the precision of tumor resection and shorten the operation time.

Objective·To explore the effects of hypertension and dyslipidemia on cognitive function in the elderly.Methods·A dynamic population cohort was established by using prospective cohort study methods.In 2019,a complete cohort was selected from residents aged 65 and above who voluntarily participated in a free physical examination program in a community in Shanghai,serving as the baseline cohort.In 2022,512 community-dwelling elderly aged 67 to 93 were randomly selected from the same community as the follow-up cohort for the study.The collected date included residents' health records,various physical examination measurements,and Mini-mental State Examination(MMSE)scale scores.Results·Of the 512 cases that were followed up,the valid sample size was reduced to 495 after data cleaning.According to the baseline and follow-up cognitive assessments and changes,the cases were categorized into three cognitive groups:the improvement group,the normal group,and the decline group.The prevalence of hypertension in the decline group was 43.14%higher than that in the improvement group and 24.39%higher than that in the normal group(66.67%in the decline group vs 23.53%in the improvement group,P=0.011;66.67%in the decline group vs 42.28%in the normal group,P=0.040).Total cholesterol(TC)in the improvement group was lower than that in the normal group[improvement group(4.38±1.04)mmol/L vs normal group(5.11±1.12)mmol/L,P=0.009].Additionally,TC in the decline group in 2022 was higher than that in 2019[paired difference(0.46±0.87)mmol/L,95%CI 0.08?0.84,P=0.021].LDL-Ch in the improvement group was lower than that in the normal group[improved group(2.51±0.92)mmol/L vs normal group(3.07±1.00)mmol/L,P=0.024],and their HDL-Ch in 2022 was higher than that in 2019[paired difference(0.16±0.20)mmol/L,95%CI 0.06?0.26,P=0.005].The results of multinomial Logistic regression showed:TC in the improved group was lower than that in the normal group[β=4.12,OR=61.64,95%CI 1.52?2494.07,P=0.029]and the decline group[β=5.88,OR=357.35,95%CI 4.54?28149.75,P=0.008];the TAG[β=1.85,OR=6.34,95%CI 1.05?38.43,P=0.045],LDL-Ch[β=5.61,OR=274.06,95%CI 3.65?20567.57,P=0.011],and hypertension[β=1.90,OR=6.69,95%CI 1.53?29.16,P=0.011]in the decline group were higher than those in the improvement group;the age of the decline group was greater than that of the normal group[β=0.08,OR=1.08,95%CI 1.00?1.16,P=0.041],and the education level was lower than that of the normal group[β=1.22,OR=3.39,95%CI 1.28?8.94,P=0.014].Conclusion·Low TC and LDL-Ch and high HDL-Ch are beneficial to cognitive improvement.Conversely,hypertension,high TC,high TAG,high LDL-Ch,low education level,and advanced ages are risk factors for cognitive decline.

Mechanical ventilation(MV)provides life support for critically ill respiratory patients,but in the meantime can cause fatal ventilator-induced lung injury(VILI),and the latter remains a major challenge in respiratory and critical care medicine,because the pathological mechanism has not been fully elucidated.Recent studies show that on the one hand,in the lung with VILI,there exists airway collapse at multi-sites of an individual airway,which can not be explained by traditional airway collapse models.But on the other hand,under MV conditions,airway smooth muscle cells(ASMC)exhibit abnormal mechanical behaviors,accompanied by regulation of Piezo1 expression and endoplasmic reticulum stress.These phenomenons indicate that the MV-induced abnormal mechanical behavior of ASMC is closely related to multiple airway collapse and VILI.Therefore,by studying the MV-induced changes of ASMC mechanical behaviors and their relationship with airway collapse in lung injury,as well as the related mechanochemical signal coupling process,it is expected to reveal a novel mechanism of MV-associated airway collapse and lung injury from the perspective of cell mechanics.In this review,the recent research progress of airway collapse during MV,the regulation of ASMC mechanical behavior by MV-related high stretch,especially the related mechanochemical signal coupling mechanism is summarized.These advances may provide a novel insight for exploring the roles of ASMC abnormal mechanical behavior in the pathological mechanism of VILI,alternative targets of drug intervention for prevention and treatment of VILI,as well as for optimizing the ventilation mode in clinical practice.

Objective To explore the levels of interleukin-37(IL-37)and CC type modified chemokine 11(CCL11)in serum of pregnant women infected with group B streptococcus in late pregnancy and their predic-tive efficacy for maternal and infant outcomes.Methods A total of 86 pregnant women with reproductive tract B streptococcus infection in late pregnancy treated in the hospital from December 2020 to December 2022 were selected as the study group,and 76 pregnant women with normal physical examination admitted during the same period were selected as the control group.The levels of IL-37 and CCL11 in serum of all pregnant women were detected by enzyme-linked immunosorbent assay.According to whether the pregnant women with group B streptococcus infection in late pregnancy had adverse maternal and infant outcomes,they were divided into normal pregnancy outcome group(50 cases)and adverse pregnancy outcome group(36 cases).Receiver operating characteristic(ROC)curve was used to evaluate the diagnostic value of serum IL-37 and CCL11 on maternal and infant outcomes of pregnant women with reproductive group B streptococcus infection in late pregnancy.Multivariate Logistic regression was used to analyze the factors affecting maternal and in-fant outcomes of pregnant women with reproductive group B streptococcus infection in late pregnancy.Results The levels of IL-37 and CCL11 in the study group were higher than those in the control group(P<0.05).The incidence rate of adverse outcomes in the study group was significantly higher than that in the control group(P<0.05).The proportion of abortion history and the proportion of vaginal microecological disorders and levels of IL-37 and CCL11 and in adverse pregnancy outcome group were higher than those in normal pregnancy outcome group(P<0.05).ROC curve results showed that the area under the curve(AUC)of IL-37 and CCL11 for predicting adverse maternal and infant outcomes of pregnant women infected with group B streptococcus in late pregnancy were 0.876(95%CI:0.824-0.920)and 0.788(95%CI:0.748-0.830),re-spectively.The AUC of the combined prediction of adverse maternal and infant outcomes of pregnant women infected with group B streptococcus were 0.927(95%CI:0.889-0.970).Multivariate Logistic regression a-nalysis results showed that serum IL-37(OR=3.604,95%CI:2.106-6.166),CCL11(OR=4.250,95%CI:2.074-8.709),abortion history(OR=2.707,95%CI:1.688-4.342)and vaginal microecological disorders(OR=3.504,95%CI:1.993-6.162)were risk factors for adverse maternal and infant outcomes in pregnant women infected with group B streptococcus in late pregnancy(P<0.05).Conclusion The levels of IL-37 and CCL11 in serum of pregnant women infected with reproductive group B streptococcus in late pregnancy are in-creased,which are related to adverse pregnancy outcomes,and are expected to be effective indicator for predic-ting adverse pregnancy outcomes of pregnant women infected with reproductive group B streptococcus in late pregnancy.

Jasmonic acid (JA), a plant endogenously synthesized lipid hormone, plays an important role in response to stress. This manuscript summarized the biosynthesis and metabolism of JA and its related regulatory mechanisms, as well as the signal transduction of JA. The mechanism and regulatory network of JA in plant response to biotic and abiotic stresses were systematically reviewed, with the latest advances highlighted. In addition, this review summarized the signal crosstalk between JA and other hormones in regulating plant resistance to various stresses. Finally, the problems to be solved in the study of plant stress resistance mediated by JA were discussed, and the application of new molecular biological technologies in regulating JA signaling to enhance crop resistance was prospected, with the aim to facilitate future research and application of plant stress resistance.
Signal Transduction ; Cyclopentanes ; Oxylipins ; Plant Growth Regulators

Objective To evaluate the mechanism of governor vessel electroacupuncture in rats with post-stroke limb spasm by observing the changes of glutathione antioxidant system-related factors.Methods A total of 60 SD rats were randomly divided into the normal group(n=12),sham operation group(n=12)and modeling group(n=36).The middle cerebral artery obstruction model was prepared by thread approach method in the modeling group,and 24 rats with successful modeling were randomly divided into the model group and the electroacupuncture group,with 12 rats in each group.At the 3rd day after modeling,the electroacupuncture group was treated with electroacupuncture at three acupoints of the governor vessel,namely,"Dazhui"(GV14),"Jizhong"(GV6)and"Houhui"(anteromedial of the transverse process of the sixth lumbar vertebra),for 30 min each time,once a day for 7 days.The neurological function of rats was assessed by Zea Longa neurological deficit score.The muscle tension of rats was detected by modified Ashworth dystonia rating and electrophysiological tracing method.The brain tissue water content was measured by the dry-wet weight method.The volume of cerebral infarction of rats was measured by the TTC staining method.The contents of glutathione(GSH),catalase(CAT),oxidized glutathione(GSSG),superoxide dismutase(SOD),and malondialdehyde(MDA)in the cortex of rats were detected by colorimetry.The protein and mRNA expressions of glutathione reductase(GR),glutamate cysteine ligase(GCL)C,GCLM,and glutathione peroxidase 4(GPX4)in the cortex of rats were measured by Western blotting and real-time PCR,respectively.Results Compared with rats in the normal and sham operation groups,the Zea Longa neurological deficit score,modified Ashworth dystonia rating,the volume of cerebral infarction,brain tissue water content,and GSSG and MDA contents in cortex were increased in the model group,the tension signal value and the proteins and mRNA expressions of GR,GCLC,GCLM,and GPX4 in cortex were decreased,and the contents of GSH,CAT,and SOD in cortex were decreased(P＜0.05).Compared with the model group,the Zea Longa neurological deficit score,modified Ashworth dystonia rating,the volume of cerebral infarction,brain tissue water content,and GSSG and MDA contents in cortex were decreased in the electroacupuncture group,the tension signal value and the proteins and mRNA expressions of GR,GCLC,GCLM,and GPX4 in cortex were increased,and the contents of GSH,CAT,and SOD in cortex were increased(P＜0.05).Conclusion Governor vessel electroacupuncture can improve the severity of post-stroke limb spasm in rats,and its mechanism may be related to the regulation of glutathione antioxidant system in cerebral cortex.

Objective Based on a novel type of cell death induced by disulfide stress,known as disulfidptosis,this study explores the role of long non-coding RNA(LncRNA)in gastric cancer and establishes a prognosis model re-lated to disulfidptosis,providing a new method for assessing the prognosis of gastric cancer treatment.Methods Transcriptomic data from gastric cancer and normal tissue samples were obtained from the public database TCGA,and disulfidptosis-related LncRNAs were selected through Pearson analysis and LASSO-Cox regression analysis.A relevant prognostic model for gastric cancer was constructed based on the above LncRNAs and validated by function-al enrichment analysis,tumour microenvironment and immune cell infiltration analysis,drug sensitivity analysis and quantitative reverse transcription PCR(RT-qPCR).Results In this study,400 disulfide death-associated LncR-NAs were identified and five of them were screened to construct a prognostic model for assessing the prognosis of gastric cancer patients.The models showed in validation that the survival of the high-risk score group was shorter than that of the low-risk score group(P＜0.05).In addition,the predictive ability of the prognostic model(AUC=0.725)was better than that based only on basic characteristics such as age and gender.The expression levels of disulfide death-associated LncRNAs differed between normal and gastric cancer tissues(P＜0.001).Conclusion The disulfidptosis-related LncRNA prognosis model developed in this study can effectively assess the prognosis of gastric cancer patients and the tumor microenvironment,providing potential targets and a theoretical basis for new immunotherapeutic strategies for gastric cancer.

The prevalence rate of nonalcoholic fatty liver disease(NAFLD)in postmenopausal women is significantly higher than that in premenopausal women and even exceeds that in men of the same age group,and exercise intervention remains an effective method for the prevention and treatment of NAFLD in postmenopausal women.In addition,postmenopausal women with NAFLD often have comorbidities such as sarcopenia,osteoporosis,cardiovascular diseases,and diabetes,which requires targeted exercise prescriptions and proactive intervention for potential comorbidities.Through a literature review,this article provides targeted recommendations for exercise intervention prescriptions in postmenopausal women with NAFLD and related comorbidities.

[Objective]To summarize and analyze the research progress of flavonoids in the prevention and treatment of diabetes mellitus and its complications.[Methods]The role of flavonoids in diabetes mellitus and diabetic complications was summarized by searching the databases of Web of Science,PubMed,China National Knowledge Infrastructure,VIP,Wanfang and others for the reports of flavonoids and diabetes mellitus and diabetic complications from January 2013 to December 2022,and the role of flavonoids in diabetes mellitus and diabetic complications was summarized.[Results]Studies have confirmed that flavonoids(herbal flavonoid extracts,naringenin,galangal,kaempferol,etc.)are effective in preventing and treating diabetes and diabetes-induced retinopathy,nephropathy,cardiomyopathy,osteoporosis and diabetic foot.Overall regulation and comprehensive treatment are the characteristics of flavonoid components,which can inhibit inflammation,reduce oxidative stress,repair mitochondrial function,lower blood glucose,relieve insulin resistance and are able to influence the expression of related factors from multiple signaling pathways,thus treating diabetes and its complications.[Conclusion]The elaboration of the pharmacodynamic material basis,mechanism of action and constitutive relationship of Chinese medicine flavonoids against diabetes mellitus and its complications in multiple ways and at multiple levels are key issues to be solved in the development of flavonoids and an important direction for future research.

Post-traumatic stress disorder (PTSD) presents with complex and diverse clinical manifestations, making accurate and objective diagnosis challenging when relying solely on clinical assessments. Therefore, there is an urgent need to develop reliable and objective auxiliary diagnostic models to provide effective diagnosis for PTSD patients. Currently, the application of graph neural networks for representing PTSD is limited by the expressiveness of existing models, which does not yield optimal classification results. To address this, we proposed a multi-graph multi-kernel graph convolutional network (MK-GCN) model for classifying PTSD data. First, we constructed functional connectivity matrices at different scales for the same subjects using different atlases, followed by employing the k-nearest neighbors algorithm to build the graphs. Second, we introduced the MK-GCN methodology to enhance the feature extraction capability of brain structures at different scales for the same subjects. Finally, we classified the extracted features from multiple scales and utilized graph class activation mapping to identify the top 10 brain regions contributing to classification. Experimental results on seismic-induced PTSD data demonstrated that our model achieved an accuracy of 84.75%, a specificity of 84.02%, and an AUC of 85% in the classification task distinguishing between PTSD patients and non-affected subjects. The findings provide robust evidence for the auxiliary diagnosis of PTSD following earthquakes and hold promise for reliably identifying specific brain regions in other PTSD diagnostic contexts, offering valuable references for clinicians.
Humans ; Stress Disorders, Post-Traumatic/diagnostic imaging* ; Neural Networks, Computer ; Algorithms ; Brain/diagnostic imaging* ; Magnetic Resonance Imaging