ObjectiveTo evaluate the antitumor activity of Periplaneta americana extract（PAE） against human-derived lung adenocarcinoma organoids（LUAD-PDOs） and to elucidate its potential mechanism based on transcriptomics. MethodsFresh tumor and adjacent normal tissues from patients with LUAD were collected to construct LUAD-PDOs and normal lung organoid（Nor-PDOs） models using 3D organoid culture technology. The effective intervention concentration of PAE was determined using the cell counting kit-8（CCK-8） assay. Experimental groups included the model group（LUAD-PDOs）， normal group， model administration group（LUAD-PDOs+PAE）， and normal administration group（Nor-PDOs+PAE）. Hematoxylin-eosin（HE） staining was used to observe the pathological structures of PDOs， immunohistochemistry（IHC） was performed to detect the expressions of the proliferation marker Ki-67 and lung adenocarcinoma differentiation markers cytokeratin-7（CK-7） and Napsin A， TUNEL staining was applied to detect cell apoptosis. RNA sequencing（RNA-Seq） was conducted to identify differentially expressed genes（DEGs）， followed by Gene Ontology（GO）， Kyoto Encyclopedia of Genes and Genomes（KEGG）， and Gene Set Enrichment Analysis（GSEA）， alongside protein-protein interaction（PPI） network analysis to screen core mechanisms. Finally， key targets were validated by integrating external database analysis with immunofluorescence（IF）. ResultsNor-PDOs and LUAD-PDOs that highly recapitulated the pathological characteristics of the primary tissues were successfully established. The CCK-8 assay determined that the effective intervention concentration of PAE was 16 g·L^-1. Morphological observation showed that Nor-PDOs exhibited lumen-forming structures， whereas LUAD-PDOs displayed dense， solid structures. CCK-8 and TUNEL assays revealed that， compared with the model group， PAE intervention inhibited the proliferation of LUAD-PDOs and promoted apoptosis in LUAD cells， while showing no significant effect on the viability of Nor-PDOs. Transcriptomic analysis identified 719 DEGs that were significantly reversed after PAE intervention（347 up-regulated and 372 down-regulated）（P<0.05）. GO enrichment analysis indicated that DEGs in the model administration group were significantly enriched in biological processes related to cell cycle regulation compared to the model group. KEGG pathway analysis revealed that PAE affected pathways related to proliferation and metabolism， including pathways in cancer and the p53 signaling pathway. GSEA further confirmed that PAE significantly enhanced the activity of the p53 signaling pathway（P<0.05）. PPI network analysis indicated that breast cancer type 1 susceptibility protein（BRCA1） and checkpoint kinase 1（CHEK1） were the core down-regulated targets in the p53 pathway. IF verified the high expression of BRCA1 and CHEK1 in LUAD-PDOs and their significant downregulation after PAE intervention（P<0.05）. Furthermore， survival analysis based on The Cancer Genome Atlas（TCGA） database indicated that low expression of BRCA1 and CHEK1 was significantly associated with prolonged overall survival in patients with LUAD（P<0.05）. ConclusionPAE effectively inhibits proliferation of LUAD-PDOs and promotes their apoptosis， its anti-tumor mechanism is potentially associated with the activation of the p53 signaling pathway， with BRCA1 and CHEK1 genes likely serving as key downstream targets for the effects of PAE.

Olfactory receptors (ORs) form the largest superfamily of G protein-coupled receptors (GPCRs). Traditionally recognized for their role in the nasal olfactory epithelium, where they mediate the sense of smell, accumulating evidence has firmly established their ectopic expression in non-olfactory tissues, including the intestine, lungs, and kidneys. The intestine, as the primary site for nutrient digestion and absorption, harbors a highly complex chemical environment. To adapt to this environment, the gut employs a sophisticated network of “chemosensors” to monitor luminal contents and maintain homeostasis. Among these sensors, intestinal ORs have emerged as crucial functional components, serving as a molecular bridge that connects environmental chemical signals—such as food-derived odorants—to specific physiological responses. This discovery has significantly deepened our understanding of how dietary flavors and compounds influence intestinal physiology at the molecular level. This review systematically summarizes the expression profiles, ligand classification, and biological functions of ORs within the gastrointestinal tract. Studies indicate that intestinal ORs exhibit distinct spatial distribution patterns across different gut segments and display cell-type specificity, particularly within enterocytes and enteroendocrine cells. These receptors function as versatile sensors capable of recognizing a wide variety of ligands, including exogenous dietary components, gut microbiota metabolites such as short-chain fatty acids, and endogenous small molecules like azelaic acid. Upon activation by specific ligands, intestinal ORs trigger intracellular signaling cascades, primarily involving the AC-cAMP-PKA pathway or calcium influx channels. A major focus of this review is to elucidate the molecular mechanisms by which these receptors regulate the secretion of gut hormones. Activation of specific ORs in enteroendocrine cells has been shown to stimulate the release of hormones such as glucagon-like peptide-1 (GLP-1), peptide YY (PYY), and serotonin (5-HT), thereby modulating systemic energy metabolism, glucose homeostasis, and gastrointestinal motility. Furthermore, the review addresses the critical roles of ORs in immune regulation and pathology. Evidence suggests that specific ORs contribute to the maintenance of intestinal immune homeostasis and may offer protection against inflammation. Beyond their involvement in inflammatory responses, ORs such as Olfr78 have been shown to regulate the differentiation and function of intestinal endocrine cells. Similarly, Olfr544 has been demonstrated to alleviate intestinal inflammation by remodeling the gut microbiome and metabolome. These findings collectively suggest that specific ORs hold promise as therapeutic targets for mitigating intestinal inflammation and maintaining gut homeostasis. Additionally, the review explores the emerging role of ORs in cancer. Although OR expression is often downregulated in tumor tissues compared to normal mucosa, activation of specific ORs by certain ligands can inhibit tumor cell proliferation and migration and induce apoptosis via pathways such as MEK/ERK and p38 MAPK. Conversely, other receptors, such as OR7C1, may serve as biomarkers for cancer-initiating cells. In conclusion, intestinal ORs represent a vital component of the gut’s sensory network. The review also discusses the translational potential of these findings. By elucidating the precise pairing relationships between dietary components and specific ORs, novel therapeutic strategies could be developed. Intestinal ORs may thus emerge as promising targets for nutritional and pharmacological interventions in metabolic diseases, inflammatory bowel diseases, and malignancies.

Polycystic ovary syndrome (PCOS) is a common endocrine and metabolic disorder affecting a substantial proportion of women of reproductive age. It is frequently associated with ovulatory dysfunction, infertility, and an increased risk of chronic metabolic diseases. A hallmark pathological feature of PCOS is the arrest of follicular development, closely linked to impaired intercellular communication between the oocyte and surrounding granulosa cells. Transzonal projections (TZPs) are specialized cytoplasmic extensions derived from granulosa cells that penetrate the zona pellucida to establish direct contact with the oocyte. These structures serve as essential conduits for the transfer of metabolites, signaling molecules (e.g., cAMP, cGMP), and regulatory factors (e.g., microRNAs, growth differentiation factors), thereby maintaining meiotic arrest, facilitating metabolic cooperation, and supporting gene expression regulation in the oocyte. The proper formation and maintenance of TZPs depend on the cytoskeletal integrity of granulosa cells and the regulated expression of key connexins, particularly CX37 and CX43. Recent studies have revealed that in PCOS, TZPs exhibit significant structural and functional abnormalities. Contributing factors—such as hyperandrogenism, insulin resistance, oxidative stress, chronic inflammation, and dysregulation of critical signaling pathways (including PI3K/Akt, Wnt/β‑catenin, and MAPK/ERK)—collectively impair TZP integrity and reduce their formation. This disruption in granulosa-oocyte communication compromises oocyte quality and contributes to follicular arrest and anovulation. This review provides a comprehensive overview of TZP biology, including their formation mechanisms, molecular composition, and stage-specific dynamics during folliculogenesis. We highlight the pathological alterations in TZPs observed in PCOS and elucidate how endocrine and metabolic disturbances—particularly androgen excess and hyperinsulinemia—downregulate CX43 expression and impair gap junction function, thereby exacerbating ovarian microenvironmental dysfunction. Furthermore, we explore emerging therapeutic strategies aimed at preserving or restoring TZP integrity. Anti-androgen therapies (e.g., spironolactone, flutamide), insulin sensitizers (e.g., metformin), and GLP-1 receptor agonists (e.g., liraglutide) have shown potential in modulating connexin expression and enhancing granulosa-oocyte communication. In addition, agents such as melatonin, AMPK activators, and GDF9/BMP15 analogs may promote TZP formation and improve oocyte competence. Advanced technologies, including ovarian organoid models and CRISPR-based gene editing, offer promising platforms for studying TZP regulation and developing targeted interventions. In summary, TZPs are indispensable for maintaining follicular homeostasis, and their disruption plays a pivotal role in the pathogenesis of PCOS-related folliculogenesis failure. Targeting TZP integrity represents a promising therapeutic avenue in PCOS management and warrants further mechanistic and translational investigation.

Objective:Exploring the role and mechanism of CHMP4C in regulating necroptosis during gastric can-cer development and progression.Method:The expression of CHMP4C in pan-cancer was analyzed by bioinformatics methods,and the expression of CHMP4C was detected in human normal gastric epithelial cells and GC cell lines by RT-qPCR and Western blot.Overexpression or knockdown of CHMP4C was performed in GC cell lines,and the effects of CHMP4C on the growth and proliferation of GC cells were detected using CCK-8 and clone formation assays.The CCK-8 experiment and Hoechst/PI double staining experiment were used to detect the changes in GC cell mortality and PI positive cell ratio after treatment with the necroptsis inducer TSZ or inhibitor necrostatin-1(Nec-1).Western blot assay was used to detect the protein and phosphorylation levels of RIPK1,RIPK3,and MLKL in GC cells.Result:CHMP4C was upregulated in GC tissues and cells.The CCK-8 and clone formation experiments showed that overex-pression of CHMP4C significantly improved the proliferation ability and colony formation efficiency of GC cells,while knockdown of CHMP4C significantly weakened GC cells.Moreover,the results of CCK-8 and Hoechst 33342/PI double staining experiments showed that upregulated CHMP4C could inhibit TSZ induced GC cell death;Nec-1 can reverse the decrease in GC cell viability caused by CHMP4C knockdown.Western blot experiment showed that the levels of p-RIPK1,p-RIPK3,and p-MLKL were significantly decreased in overexpressing cells,while they were increased in knockdown cells.After treatment with Nec-1,the expression levels of these three proteins decreased in knockdown cells.Conclusion:CHMP4C may promote GC progression by negatively regulating necroptosis through inhibiting the phosphorylation of the RIPK1/RIPK3/MLKL signaling pathway,suggesting that it is expected to be a potential target for GC therapy.

Purpose To explore the key molecules mechanisms underlying the selective activation of macrophage and the regulation of Dicer expression induced by glioblastoma(GBM)cells,as well as its prognostic significance.Methods Glioblastoma conditional medium(GCM)was fractionated by molecular weight using ultrafiltration.Specif-ic molecular weight components of GCM that upregulate Dicer expression in mouse bone marrow derived macrophages(BMDMs)were identified.Secreted proteins were identified by mass spectrometry(MS).The correlation between candidate proteins and GBM prognosis was analyzed using the TCGA and CGGA database.In vitro experiments of the candidate proteins on Dicer expression in BMDMs were further carried out.Results GCM components with a molecu-lar weight of＞50 kDa significantly upregulated Dicer expression in BMDMs.MS identified five key secreted proteins:Prg4,Psap,Hexa,Aebp1,and Itih2.High expression of Prg4 was significantly positively correlated with poor progno-sis in GBM patients(P＜0.001)and was associated with the expression of selective macrophage activation markers.Recombinant Prg4 protein stimulated BMDMs and induced Dicer expression in mouse BMDMs.Conclusion This study reveals that glioma cells induce Dicer expression in macrophages by secreting Prg4,providing a theoretical basis for GBM therapeutic strategies targeting the Prg4-Dicer axis.

Objective:To investigate the predictive value of regional cerebral oxygen saturation (rScO 2) for perioperative neurocognitive disorders (PND) in the preanalgesia of erector spinal plane block (ESPB) combined with parecoxib sodium in elderly patients undergoing radical lung cancer surgery. Methods:A total of 180 elderly patients with lung cancer treated inthe Sixth Affiliated Hospital of South China University of Technology (People's Hospital of Nanhai District) from June 2022 to June 2023 were selected. All patients underwent thoracoscopic radical resection of lung cancer, pre-analgesia by ESPB combined with parecoxib sodium, and rScO 2 was monitored by near infrared spectroscopy. Cognitive function was assessed at 1 d before surgery and 7 d after surgery, and the incidence of PND was determined according to the Z score method. Patients with PND were included in the observation group (21 cases) and those without PND were included in the control group (159 cases). The clinical data, preoperative and postoperative cognitive scale scores, and perioperative rScO 2 were compared between the two groups. Logistic regression model was used to analyze the risk factors of PND. Receiver operating characteristic (ROC) curve was plotted to analyze the predictive value of rScO 2 to patients' PND. Results:Patients aged ≥75 years, postoperative incision infection, postoperative 1d visual analogue scale (VAS) ≥4 scores, intraoperative blood loss and operative time in the observation group were higher than those in the control group: 61.90%(13/21) vs.34.59%(55/159), 19.05%(4/21) vs. 3.77%(6/159), 42.86%(9/21) vs. 18.87%(30/159), (208.39 ± 61.05) ml vs. (172.45 ± 60.22) ml, (188.96 ± 62.13) min vs. (150.36 ± 52.17)min; the years of education in the observation group was shorter than that in the control group: (8.10 ± 2.25) years vs. (9.89 ± 2.04) years, there were statistical differences ( P<0.05). The scores of mini-mental state examination (MMSE), visual verbal learning test (VVLT), digital span test (DST1) and digital symbol test (DST2) at 7 d after surgery in both groups were lower than those befor surgery, and the scores of MMSE, VVLT, DST1 and DST2 at 7 d after surgery in the observation group were lower than those in the control group: (22.86 ± 2.05) scores vs. (24.85 ± 1.87) scores, (2.95 ± 1.95) scores vs. (4.83 ± 2.01) scores, (7.52 ± 1.83) scores vs. (9.04 ± 1.93) scores, (40.48 ± 5.05) scores vs. (44.35 ± 4.96) scores, there were statistical differences ( P<0.05). The decrease rate of rScO 2 from the baseline value at single lung ventilation 1 h (T 2) in the observation group was higher than that in the control group: (21.32 ± 5.13)% vs. (14.51 ± 5.02)%, there was statistical difference ( P<0.05). The results of Logistic regression analysis showed that rScO 2 reduction rate from the baseline value, age ≥75 years, postoperative 1 d after surgery VAS ≥4 scores, and operation time were independent risk factors for PND; the higher levels of rScO 2 at T 2 and after operation (T 3) were independent protective factors ( P<0.05). The results of ROC curve analysis showed that the area under the curve(AUC) of rScO 2 at T 2 and T 3 and the decrease rate of rScO 2 from the baseline value predicted that the PND in elderly patients with pre-analgesic radical lung cancer with ESPB combined with paracxib sodium were 0.742, 0.716 and 0.822, respectively, in which the AUC of the decrease rate of rScO 2 from the baseline value was the largest. Conclusions:rScO 2 can be used for predicting PND in the elderly patients with radical lung cancer after ESPB combined with parecoxib sodium, especiallythe predictive value of the decrease rate of rScO 2 from the baselinevalue is higher.

Objective To analyze the the differences in the use of medical consumables of single diseases,so as to provide ideas for the supervision of the rational use of medical consumables.Methods The case information of the patients discharged from some hospital in Hunan Province who underwent artificial femoral head replacement for femoral neck fracture,transurethral plasma electrosurgery for prostatic hyperplasia and percutaneous nephrolithotripsy for renal calculi from January 1,2022 to December 31,2023 were selected.Based on the results of the normality test,difference analyses were carried out over the consumption ratios of inpatients undergoing different procedures at different time periods and the consumption ratios treated by different physicians,and the percentile method was used to determine the recommended range for the consumption ratio based on the difference analysis results.SPSS 26.0 software was used for statistical analysis.Results The inpatients undergoing artificial femoral head replacement for femoral neck fracture at different periods had no significant difference in the consumption ratio(P>0.05);the inpatients going through transurethral plasma electrosurgery for prostatic hyperplasia had the consumption ratio in 2023 decreased by 5.22%when compared with that in 2022,with the difference being statistically significant(P<0.05);the inpatients undergoing percutaneous nephrolithotripsy for renal calculi had the consumption ratio at 2023 increased by 6.49%when compared with that at 2022,with the difference being statistically significant(P<0.05).There were no strong correlations between physician and inpatient consumption ratios for the three single-diseases(P<0.05),while the consumption ratios by different physicians for each single disease had differences.There were respectively 50%,40%and 50%of the physicians implementing artificial femoral head replacement for femoral neck fracture,transurethral plasma electrosurgery for prostatic hyperplasia and percutaneous nephrolithotripsy for renal calculi had the average consumption ratios higher than the average annual consumption ratios for the single diseases.The recommended ranges of the consumption ratio was[51.16%,63.89%]for artificial femoral head replacement for femoral neck fracture,[8.76%,10.77%]for transurethral plasma electrosurgery for prostatic hyperplasia and[26.40%,32.80%]for percutaneous nephrolithotripsy for renal calculi.Conclusion Under the premise of ensuring the quality of medical care,medical consumables can be scientifically and rationally supervised by setting a reasonable range,seizing the"vital few"and implementing joint management and control to reduce the consumption ratio.[Chinese Medical Equipment Journal,2025,46(7):87-91]

Objective To construct a medical consumables selection indicator system based on analytic hierarchy process(AHP)and fuzzy cluster method.Methods Firstly,a medical consumables selection indicator system was established preliminarily with the literature research results and actual situation of hospital consumables management;secondly,13 experts in related fields were selected to execute two rounds of online questionnaires,the expert weights were determined with AHP,the importance of each selection indicator was scored by the expert evaluation method and fuzzy cluster method,and consistency analysis was carried out on the two rounds of expert evaluation results;finally,the final medical consumables selection indicator system was built with the 100-point scale.Results The constructed medical consumables selection indicator system was composed of 5 primary indicators,12 secondary indicators and 38 tertiary indicators.The primary indicators included consumables quality,clinical demand,cost-effectiveness,supply capacity and after-sales service,with the percentage-based scores being 27,25,14,26 and 8,respectively.Conclusion The medical consumables selection indicator system based on AHP and fuzzy cluster method with high reliability provides effective and reliable references for medical institutions to select medical consumables.

Aim To explore the therapeutic effect and mechanism of Qingjie Huagong decoction in modulating PI3K/AKT/NF-κB signaling pathway in inflammatory response of acute pancreatitis(AP)mice.Methods Twenty-four mice were randomly divided into Blank group,Model group,Ustekin group,and Qingjie Hua-gong decoction group,with six mice in each group.The AP model was prepared by using rain frogin.Serum α-AMS,PNLP,IL-1β,IL-6,IL-8,IL-18,and TNF-α lev-els were detected by ELISA;the pancreatic pathology was detected by HE staining;the expressions of PI3K,AKT,and NF-κB-related proteins and mRNAs were de-tected by immunohistochemistry,Western blot,and RT-qPCR.Results Compared with the blank group,the model group showed obvious pathological damage to the pancreas,with significantly higher serum α-AMS,PN-LP,IL-1β,IL-6,IL-8,IL-18,and TNF-α levels(P＜0.01),and significantly higher levels of PI3K,AKT,and NF-κB-related proteins and mRNA expression(P＜0.01).Compared with the model group,both the Qingjie Huagong decoction group and the ustekin group improved the histopathological changes in the pancreas of AP mice,decreased the serum α-AMS,PNLP,IL-1β,IL-6,IL-8,IL-18,and TNF-α levels,and down-reg-ulated the expression levels of pancreatic PI3K,AKT,NF-κB-related proteins and mRNA(P＜0.05 or P＜0.01).Conclusion Qingjie Huagong decoction may inhibit the inflammatory response and protect pancreat-ic tissues by regulating the expression of PI3K/AKT/NF-κB signaling pathway.

Objective To construct a medical consumables selection indicator system based on analytic hierarchy process(AHP)and fuzzy cluster method.Methods Firstly,a medical consumables selection indicator system was established preliminarily with the literature research results and actual situation of hospital consumables management;secondly,13 experts in related fields were selected to execute two rounds of online questionnaires,the expert weights were determined with AHP,the importance of each selection indicator was scored by the expert evaluation method and fuzzy cluster method,and consistency analysis was carried out on the two rounds of expert evaluation results;finally,the final medical consumables selection indicator system was built with the 100-point scale.Results The constructed medical consumables selection indicator system was composed of 5 primary indicators,12 secondary indicators and 38 tertiary indicators.The primary indicators included consumables quality,clinical demand,cost-effectiveness,supply capacity and after-sales service,with the percentage-based scores being 27,25,14,26 and 8,respectively.Conclusion The medical consumables selection indicator system based on AHP and fuzzy cluster method with high reliability provides effective and reliable references for medical institutions to select medical consumables.