Objective To analyze the literature on artificial intelligence in forensic research from 2012 to 2022 in the Web of Science Core Collection Database,to explore research hotspots and developmen-tal trends.Methods A total of 736 articles on artificial intelligence in forensic medicine in the Web of Science Core Collection Database from 2012 to 2022 were visualized and analyzed through the litera-ture measuring tool CiteSpace.The authors,institution,country(region),title,journal,keywords,cited references and other information of relevant literatures were analyzed.Results A total of 736 articles published in 220 journals by 355 authors from 289 institutions in 69 countries(regions)were identi-fied,with the number of articles published showing an increasing trend year by year.Among them,the United States had the highest number of publications and China ranked the second.Academy of Forensic Science had the highest number of publications among the institutions.Forensic Science Inter-national,Journal of Forensic Sciences,International Journal of Legal Medicine ranked high in publica-tion and citation frequency.Through the analysis of keywords,it was found that the research hotspots of artificial intelligence in the forensic field mainly focused on the use of artificial intelligence technol-ogy for sex and age estimation,cause of death analysis,postmortem interval estimation,individual identification and so on.Conclusion It is necessary to pay attention to international and institutional cooperation and to strengthen the cross-disciplinary research.Exploring the combination of advanced ar-tificial intelligence technologies with forensic research will be a hotspot and direction for future re-search.

Objective To investigate the toxicokinetic differences of 3,4-methylenedioxy-N-methylamphetamine(MDMA)and its metabolite 4,5-methylene dioxy amphetamine(MDA)in rats af-ter single and continuous administration of MDMA,providing reference data for the forensic identifica-tion of MDMA.Methods A total of 24 rats in the single administration group were randomly divided into 5,10 and 20 mg/kg experimental groups and the control group,with 6 rats in each group.The ex-perimental group was given intraperitoneal injection of MDMA,and the control group was given intraperi-toneal injection of the same volume of normal saline as the experimental group.The amount of 0.5 mL blood was collected from the medial canthus 5 min,30 min,1 h,1.5 h,2 h,4 h,6 h,8 h,10 h,12 h after administration.In the continuous administration group,24 rats were randomly divided into the experi-mental group(18 rats)and the control group(6 rats).The experimental group was given MDMA 7 d by continuous intraperitoneal injection in increments of 5,7,9,11,13,15,17 mg/kg per day,respectively,while the control group was given the same volume of normal saline as the experimental group by in-traperitoneal injection.On the eighth day,the experimental rats were randomly divided into 5,10 and 20 mg/kg dose groups,with 6 rats in each group.MDMA was injected intraperitoneally,and the con-trol group was injected intraperitoneally with the same volume of normal saline as the experimental group.On the eighth day,0.5 mL of blood was taken from the medial canthus 5 min,30 min,1 h,1.5 h,2 h,4 h,6 h,8 h,10 h,12 h after administration.Liquid chromatography-triple quadrupole tandem mass spectrometry was used to detect MDMA and MDA levels,and statistical software was employed for data analysis.Results In the single-administration group,peak concentrations of MDMA and MDA were reached at 5 min and 1 h after administration,respectively,with the largest detection time limit of 12 h.In the continuous administration group,peak concentrations were reached at 30 min and 1.5 h af-ter administration,respectively,with the largest detection time limit of 10 h.Nonlinear fitting equations for the concentration ratio of MDMA and MDA in plasma and administration time in the single-administration group and continuous administration group were as follows:T=10.362C-1.183,R2=0.974 6;T=7.397 3C-0.694,R2=0.961 5(T:injection time;C:concentration ratio of MDMA to MDA in plasma).Conclusions The toxicokinetic data of MDMA and its metabolite MDA in rats,obtained through single and continuous administration,including peak concentration,peak time,detection time limit,and the relationship between concentration ratio and administration time,provide a theoretical and data foundation for relevant forensic identification.

Objective:To establish a sensing technology of catalytic hairpin self-assembly (CHA) combining with clustered interspaced short palindromic repeats with associated protein 12a (CRISPR-Cas12a) for the detection of exosomal microRNA-21 (miR-21), and to analyze the performance.Methods:Eight patients diagnosed as breast cancer in the First Affiliated Hospital of the Army Military Medical University from September to October 2023 were selected as the breast cancer group; 8 healthy individuals who underwent physical examinations during the same period were selected as the healthy control group. Plasma exosomes and their miR-21 were extracted using the kit. DNA hairpins and CRISPR RNA sequences were designed for miR-21 sequences. The feasibility of detection technology was validated using polyacrylamide gel electrophoresis and fluorescence spectrophotometer. Hairpins concentration, CHA reaction time, Cas12a protein concentration and Cas12a protein reaction time were further optimized. On this basis, miR-21 was detected at different concentrations (0, 0.1, 0.5, 1.0, 2.5, 5.0, 7.5, 10.0 nmol/L), and fluorescence intensity was collected for unary linear regression analysis to evaluate methodological sensitivity; meanwhile, different types of miRNAs (miR-31, miR-26a, miR-192, miR-25-3p) and blank controls were detected to evaluate methodological specificity. A case-control study was conducted to detect the relative expression level of plasma exosomal miR-21 in breast cancer group and healthy control group using this detection technology and reverse transcription PCR (RT-PCR) to evaluate the detection ability of clinical samples.Results:A detection method for exosomal miR-21 was established using CHA combining with CRISPR-Cas12a. The concentration of miR-21 detected by this method showed a good linear relationship with fluorescence intensity (the linear correlation coefficient 0.966 7), and the linear detection range was 0.1-10.0 nmol/L, and the detection limit was 87.81 pmol/L. The fluorescence intensity of miR-21 was 450.27±23.96 which was higher than that of miR-31, miR-26a, miR-192, miR-25-3p, and the blank group (98.89±7.35, 98.12±2.07, 98.93±2.45, 96.66±2.45, 82.93±3.54, respectively), with statistical significance ( P<0.001). The results of RT-PCR showed that the relative expression levels of plasma exosomal miR-21 in the breast cancer group were higher than that in healthy control group (1.83±0.27 vs 0.93±0.12, P<0.001); CHA combining with CRISPR-Cas12a detection technology showed that the relative expression levels of plasma exosomal miR-21 in breast cancer group were higher than that in healthy control group (1.94±0.21 vs 0.98±0.08, P<0.001); There was no significant difference in the relative expression levels of plasma exosomal miR-21 between CHA combining with CRISPR-Cas12a detection technology and reverse transcription PCR in breast cancer group and healthy control group ( P>0.05). Conclusion:In this study, a highly sensitive and specific sensing technology of CHA combining with CRISPR-Cas12a for exosomal miR-21 was established. The results of detecting plasma exosomal miR-21 were consistent with the results of reverse transcription PCR, which can be used for screening of breast cancer patients.

ObjectiveTo investigate the effect of mucin 1 (MUC1) on the proliferation and apoptosis of nasopharyngeal carcinoma (NPC) and its regulatory mechanism. MethodsThe 60 NPC and paired para-cancer normal tissues were collected from October 2020 to July 2021 in Quanzhou First Hospital. The expression of MUC1 was measured by real-time quantitative PCR (qPCR) in the patients with PNC. The 5-8F and HNE1 cells were transfected with siRNA control (si-control) or siRNA targeting MUC1 (si-MUC1). Cell proliferation was analyzed by cell counting kit-8 and colony formation assay, and apoptosis was analyzed by flow cytometry analysis in the 5-8F and HNE1 cells. The qPCR and ELISA were executed to analyze the levels of TNF-α and IL-6. Western blot was performed to measure the expression of MUC1, NF-кB and apoptosis-related proteins (Bax and Bcl-2). ResultsThe expression of MUC1 was up-regulated in the NPC tissues, and NPC patients with the high MUC1 expression were inclined to EBV infection, growth and metastasis of NPC. Loss of MUC1 restrained malignant features, including the proliferation and apoptosis, downregulated the expression of p-IкB、p-P65 and Bcl-2 and upregulated the expression of Bax in the NPC cells. ConclusionDownregulation of MUC1 restrained biological characteristics of malignancy, including cell proliferation and apoptosis, by inactivating NF-κB signaling pathway in NPC.

PI3Kγ and PI3Kδ have important regulatory roles in the immune system, and targeting these two subtypes helps to reshape the tumor microenvironment. PI3Kγ and PI3Kδ are potential targets for tumor immunotherapy. In this study, a series of new pyrazolopyrimidine derivatives were designed and synthesized on the basis of our previously reported PI3K inhibitors, resulting in the discovery of compound 16l as a potent and selective PI3Kγ/δ dual inhibitor. Compound 16l demonstrated strong biochemical potencies against PI3Kγ and PI3Kδ with IC₅₀ values of 0.11 and 0.79 nmol·L^-1. In cell-based assays, it potently inhibited the PI3Kγ and PI3Kδ mediated Akt S473 phosphorylation with EC₅₀ values of 3 and 7 nmol·L^-1. In vivo, compound 16l exhibited acceptable pharmacokinetic properties in Sprague-Dawley (SD) rats and suppressed the tumor growth in a MC38 syngeneic mouse model. The animal experiments were approved by the Animal Ethics Committee of Hefei Institutes of Physical Science, Chinese Academy of Sciences (approval number: DWLL-2000-06). In addition, no appreciable human ether-a-go-go-related gene (hERG) inhibition was observed for compound 16l even at 30 μmol·L^-1. These results suggested that compound 16l might be a potential research tool for studying the PI3Kγ/δ mediated signaling pathways.

Professor ZHANG Boli believed that the core pathogenesis of heart failure with preserved ejection fraction （HFpEF） is weak pulse at yang and wiry pulse at yin. By referring to the theory of “damp-turbidity and phlegm-rheum type of diseases”， he proposed that yin pathogens of damp-turbidity and phlegm-rheum may damage yang qi in each stage of HFpEF， thus aggravating the trend of weak pulse at yang and wiry pulse at yin， which played an important role in the deterioration of HFpEF. Therefore， Professor ZHANG Boli advocated that importance should be attached to the elimination of yin pathogen and the protection of yang qi during the various stages of HFpEF in order to delay the aggravation of weak pulse at yang and wiry pulse at yin； he put forward the idea of staged treatment that “yin pathogen should be dispelled and yang qi should be demonstrated”； and he formulated the treatment strategy of treating the disease as early as possible， eliminating pathogens and protecting yang， interrupting the disease trend， using warm-like medicinals， and activating blood circulation， to enrich the theoretical system of traditional Chinese medicine in the treatment of HFpEF.

ObjectiveTo explore the scientific connotation of fried charcoal survivability of Lonicerae Japonicae Flos（LJF） by analyzing the correlation between the color change and the intrinsic components during the processing of LJF Carbonisata（LJFC）， and taking pH， charcoal adsorption and microscopic characteristics as indexes. MethodLJFC samples with different degrees of processing were prepared according to the stir-frying time of 0.0， 1.5， 3.0， 4.5， 6.0， 7.5， 9.0， 10.5 min（numbered S1-S8）， and the contents of gallic acid， chlorogenic acid， cryptochlorogenic acid， rutin， luteoloside， isochlorogenic acid A and isochlorogenic acid C were determined by high performance liquid chromatography（HPLC）， and the L^*（brightness）， a^*（red-greenness） and b^*（yellow-blueness） of LJFC samples with different degrees of processing were determined by spectrophotometer， and the correlation analysis and principal component analysis（PCA） between the contents of seven representative components and the color of the samples were carried out by SPSS 26. 0 and SIMCA-P 14.1. Then pH， adsorption force and characteristic structure of different samples of LJFC were detected and the processing pattern of LJFC was analyzed. ResultThe results of quantitative analysis revealed that the contents of luteoloside， rutin， chlorogenic acid and isochlorogenic acid A gradually decreased， and the contents of cryptochlorogenic acid， isochlorogenic acid C and gallic acid firstly increased and then decreased. The L^* and b^* of the sample powders decreased， and a^* showed a trend of increasing and then decreasing. The L^* and b^* were positively correlated with the contents of chlorogenic acid， rutin， luteoloside， isochlorogenic acid A， b^* was positively correlated with the content of gallic acid， and a^* was positively correlated with the contents of cryptochlorogenic acid and isochlorogenic acid C. PCA revealed that samples could be clearly divided into 3 groups， S1-S2 as one group， S3-S5 as one group， and S6-S8 as one group， with S3 having the highest score. The results of regression analysis showed that only isochlorogenic acid C could be used to predict the contents of components by colorimetric values combined with regression equations. Physicochemical analysis showed that pH of LJFC increased with the increase of degree of charcoal stir-frying， while adsorption force showed a tendency of increasing and then decreasing， with the highest adsorption force in the S5 sample， and the non-glandular hairs， calcium oxalate clusters and pollen grains had a varying degree of decreasing with the deepening of processing degree， and the microstructures of S6-S8 samples were obviously charred with pollen grains almost invisible. ConclusionThe changes in chemical composition and color characteristics of LJFC during the processing have certain correlations， combined with the changes in physicochemical properties， S5 sample is found to be the optimal processed products， which can provide a reference for the processing standardization and quality evaluation of LJFC， and enrich the scientific connotation of fried charcoal survivability of LJF.

Humans ; Nasal Polyps/epidemiology* ; Cross-Sectional Studies ; Rhinosinusitis ; Asthma/epidemiology* ; Sinusitis/epidemiology* ; Chronic Disease

Neurodegenerative diseases, originating from irreversible progressive loss of neuronal structure or function, are difficult to diagnose and treat. They vary widely in scope and have poor prevention and prognosis. Therefore, research on their early diagnosis is particularly important. Exosomes are small vesicles of cellular origin that contain various bioactive small molecules, such as proteins, RNAs, and DNAs, and play important roles in intercellular communication. Recent studies have shown that exosomes and their non-coding RNAs are key factors in the pathogenesis of various neurodegenerative diseases. Therefore, exosomes and their non-coding RNAs may provide a breakthrough for the early diagnosis of neurodegenerative diseases. This review summarizes the biology of exosomes and the current research progress of exosomes and their non-coding RNAs in diagnosing neurodegenerative diseases and further explores the challenges and prospects they face.

Neurodegenerative diseases, originating from irreversible progressive loss of neuronal structure or function, are difficult to diagnose and treat. They vary widely in scope and have poor prevention and prognosis. Therefore, research on their early diagnosis is particularly important. Exosomes are small vesicles of cellular origin that contain various bioactive small molecules, such as proteins, RNAs, and DNAs, and play important roles in intercellular communication. Recent studies have shown that exosomes and their non-coding RNAs are key factors in the pathogenesis of various neurodegenerative diseases. Therefore, exosomes and their non-coding RNAs may provide a breakthrough for the early diagnosis of neurodegenerative diseases. This review summarizes the biology of exosomes and the current research progress of exosomes and their non-coding RNAs in diagnosing neurodegenerative diseases and further explores the challenges and prospects they face.