Objective To study the expression profile and possible roles of ferroptosis-related genes in a bleomycin-induced murine model of pulmonary fibrosis. Methods Twelve 6-7-week-old male C57BL/6 mice were randomly divided into model group and control group, 6 in each group. The model group received nasal inhalation of bleomycin, while the control group was given an equal volume of normal saline. Lung tissues were collected 3 weeks after modeling. Pathological changes and collagen deposition in lungs were observed by HE and Masson staining. Prussian blue staining was used to observe the level of iron accumulation in lung tissue. Total RNA was extracted for PCR Array to identify ferroptosis-related differentially expressed genes (DEGs). Functional analysis for DEGs was performed by Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis. Expression levels of DEGs were verified by RT-qPCR analysis. Results Compared with control group, fibrosis and obvious iron deposition occured in mouse lung tissue of model group. The PCR array identified five ferroptosis-related genes that expression significantly decreased in model group compared with control group including carbonic anhydrase 9 (CA9), cysteinyl-tRNA synthetase 1 (CARS1), heat shock transcription factor 1 (HSF1), NADPH oxidase 3 (NOX3) and mitochondrial ferritin (FTMT)(P<0.05). GO functional enrichment analysis and KEGG pathway analysis showed that the DEGs were mainly related to temperature homeostasis, NADPH oxidase complex, and carbonate dehydratase activity, and were involved in nitrogen metabolism, aminoacyl-tRNA biosynthesis and legionellosis signaling pathways. RT-qPCR verification confirmed that the expression levels of CA9, CARS1, HSF1 and FTMT were significantly decreased in model group than those in control group (P<0.05). Conclusions Change of the expression of genes related to ferroptosis has been confirmed in a murine model of pulmonary fibrosis induced by bleomycin. The result indicates that ferroptosis is involved in the process of idiopathic pulmonary fibrosis, ferroptosis-associated DEGs might provide potential targets for clinical treatment of it.

Objective To explore the effect and potential mechanism of CYP2C19 gene polymorphism on the blood minimum concentration of voriconazole in children with invasive pulmonary fungal infection. Methods The clinical data of 58 children, who used voriconazole for treatment and prevention of invasive fungal infection in the Department of Pediatrics of the First Affiliated Hospital of Guangzhou Medical University from September 2013 to September 2021, were collected and analyzed retrospectively, including demographic information, glutamic-pyruvic transaminase (ALT), C-reactive protein (CRP) and interleukin-6 (IL-6). The CYP2C19 genotype of children was detected by gene chip method, and the blood drug concentration was detected by high performance liquid chromatography. According to the drug concentration, the children were divided into low concentration group and normal concentration group. The difference of blood drug concentration in patients with different genotypes was compared. Binary logistic regression analysis was performed to analyze the factors affecting the blood concentration of voriconazole in children. Results Four of the 58 children refused to make gene test, the rest 54 patients including 35 males and 19 females; Among the six CYP2C19 genotypes, most children were with *1/*1 (636 GG, 681 GG) genotype (30 cases); The others were *1/*2 (636 GG, 681 GA) genotype (20 cases), *1/*3 (636 GA, 681 GG) genotype (2 cases), and *2/*3 (636 GA, 681 GA) genotype (2 cases), children without *2/*2 (636 GG, 681 AA) genotype and *3/*3 (636 AA, 681 GG) genotype. Among the gene phenotypes, extensive metabolizer type was the highest (30 cases), followed by intermediate metabolizer type and poor metabolizer type (22 cases and 2 cases, respectively). The frequency of allele CYP2C19*1 was the highest (82 cases), followed by the allele CYP2C19*2 and CYP2C19*3 (22 cases and 4 cases, respectively). Genotype and allele were significantly correlated with voriconazole minimum concentration. Compared with intermediate metabolizer and poor metabolizer, extensive metabolizer significantly reduced voriconazole minimum concentration. Compared with CYP2C19*2 and CYP2C19*3 alleles, CYP2C19*1 allele significantly reduced the concentration of voriconazole. Binary logistic regression analysis demonstrated that BMI, CRP, IL-6 and genotype can significantly affect the blood minimum concentration of voriconazole. Conclusions The genotype of CYP2C19 is mainly *1/*1 (636 GG, 681 GG), the extensive metabolizer genotype is the most, and the allele of CYP2C19*1 is the most common. Inflammatory factors, BMI and genotype significantly affected voriconazole metabolism.

Objective To explore the efficacy of contrast-enhanced ultrasound (CEUS) combined with mixed reality (MR) in laparoscopic anatomical hepatectomy. Methods The clinical data of 45 patients with primary liver cancer who underwent laparoscopic anatomical hepatectomy in Luoyang Central Hospital Affiliated to Zhengzhou University from January 2019 to June 2022 were retrospectively analyzed. All patients underwent abdominal thin-layer enhanced CT scan before operation, then collected data to build a three-dimensional visualization model of the liver. According to the auxiliary method of intraoperative imaging, the patients were divided into observation group (n=25, CEUS combined with MR technology was used to provide precise navigation for surgery) and the control group (n=20, routine anatomical hepatectomy was performed, and CEUS and MR technology were not used during surgery). The postoperative follow-up was to January 2023. The size of the lesion, the time of operation, the time of selective hepatic blood flow blockade, the amount of intraoperative bleeding, the intraoperative and postoperative complications, the rate of R0 resection, the length of hospital stay, the postoperative liver function [alanine aminotransferase (ALT), aspartate aminotransferase(AST), creatinine level], and the survival time were recorded and compared between two groups. Results The remaining 42 patients were successfully operated under laparoscopy except for 3 patients in control group who were converted to laparotomy. There was no statistically significant difference in lesion size between the two groups [(5.6±1.1) cm vs. (5.4±1.3) cm, P>0.05]. The observation group had significantly shorter intraoperative selective hepatic blood flow blockade time and surgical time compared to control group [(27.1±6.8) min vs. (46.9±4.3) min, P<0.001; (135.4±4.3) min vs. (199.3±5.8) min, P<0.001]. The intraoperative blood loss and transfusion volume of observation group were significantly lower than those in control group [(102.7±10.1) ml vs. (259.4±16.9) ml, P<0.001; (120.7±9.6) ml vs. (247.4±12.3) ml, P<0.001], the levels of ALT and AST were significantly lower than those in control group 24 h after operation [(96.7±23.7) U/L vs. (185.3±38.5) U/L, P<0.001; (91.4±30.9) U/L vs. (198.1±42.6) U/L, P<0.001]. One patient in the observation group developed postoperative pulmonary infection (1/25, 4.0%), and recovered after conservative treatment. In the control group, 3 patients (3/20, 15.0%) underwent massive intraoperative hemorrhage, resulting in conversion to laparotomy, 2 patients (2/20, 10.0%) experienced postoperative pulmonary infection, and 2 patients (2/20, 10.0%) experienced gastric emptying dysfunction, all patients recovered after conservative treatment. Neither patient in the two groups experienced abdominal bleeding, biliary fistula and other complications after operation. The incidence of complications in the observation group was lower than that in control group, and the difference was statistically significant (P=0.021). There was no statistically significant difference in postoperative creatinine levels, R0 resection rate, and postoperative hospital stay between the two groups [(57.4±18.2) μmol/L vs. (58.1±17.6) μmol/L, P>0.05; 100.0%(25/25) vs. 90.0%(18/20), P>0.05; (8.4±2.2) d vs. (8.9±1.9) d, P>0.05]; The median survival time of observation group was longer than that of control group, but the difference was not statistically significant [18.5(9.2, 24.5) months vs. 18.0 (8.7, 23.0) months, P>0.05]. Conclusion The combination of CEUS and MR technology is safe and effective in laparoscopic anatomical hepatectomy, which can shorten the operation time, reduce intraoperative bleeding, completely remove the tumor, and improve the treatment effect, and has good clinical application value.

Objective To investigate the effect and its mechanism of vitamin A (VA) deficiency (VAD) on regulating alveolar macrophage polarization in neonatal rats with acute respiratory distress syndrome (ARDS). Methods Sixty neonatal SD rats were divided into vitamin A normal control group (VAN ctrl group, n=10), normal vitamin A group (VAN group, n=10), vitamin A deficiency control group (VAD ctrl group, n=10), vitamin A deficiency group (VAD group, n=10), vitamin A rescue control group (VADR ctrl group, n=10) and vitamin A rescue group (VADR group, n=10). The VADR ctrl and VADR groups were injected with 25 µg VA at the second day after birth. All the neonatal rats were given lipopolysaccharide (LPS) to establish the neonatal rat model of ARDS, and serum and lung tissue samples were collected. The weight of newborn rats in each group was recorded before modeling, the May-Grunwald-Giemsa staining was performed to observe the number of main cells in bronchoalveolar lavage fluid (BALF), and HE staining was used to detect the pathological damage of lung tissue. The polarization of alveolar macrophages was evaluated by immunofluorescence. qRT-PCR and ELISA were performed to detected the expression of downstream markers of the polarization of alveolar macrophages inducible nitric oxide synthase (iNOS), tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), IL-10 and arginase-1 (Arg-1). The content of superoxide dismutase (SOD) and malondialdehyde (MDA) in lung tissue were calculated by colorimetric method, and cell apoptosis was detected by TUNEL. Results Compared with the neonatal rats in VAN group, the neonatal rats in VAD group had lower body weight, small physique, and sparse hair, while the body weight and general condition of the newborn rats in the VADR group did not change significantly. Compared with the VAD group, the neonatal rats in VADR group gained weight and shiny hair. Compared with VAN group, the lung damage of ARDS neonatal rats in VAD group was aggravated, the number of major cells in BALF increased, the M1 polarization of alveolar macrophages activated (P<0.05), the expression levels of M1 polarization markers iNOS, IL-6, TNF-α and CD86 increased significantly (P<0.05), the content of oxidative stress marker MDA and cell apoptosis increased (P<0.05), SOD activity decreased (P<0.05), while the levels of IL-10 and Arg-1 were not statistically significant (P>0.05); Compared with VAN group, there were no significant differences in macrophage M1 polarization, TNF-α, IL-6, SOD, MDA, IL-10 and Arg-1 in newborn rats in VADR group (P>0.05). Compared with VAD group, the lung damage of ARDS neonatal rats in VADR group was significantly reduced, the number of alveolar macrophages and the polarization of alveolar macrophages M1 decreased (P<0.05), the expression levels of M1 polarization markers iNOS, IL-6, TNF-α and CD86 decreased (P<0.05), the content of the oxidative stress marker MDA and cell apoptosis decreased (P<0.05), and the SOD activity enhanced (P<0.05). Conclusion VAD could regulate the M1 polarization of alveolar macrophages, up-regulated the expression of inflammatory markers downstream of M1 polarization, increased pulmonary oxidative stress and apoptosis, and aggravated ARDS in neonatal rats.

Objective To report a case of symmetric peripheral gangrene (SPG) in septic shock. The clinical data and related literature were reviewed to discuss its characteristics, pathogenesis and treatment measures, so as to improve clinicians' understanding and treatment of the disease. Methods A 60-year-old male patient was admitted to the Changhai Hospital Affiliated to Naval Medical University on July 31, 2022 due to "left side low back pain". Before operation, he was diagnosed with malignant tumor of the left adrenal gland involving multiple organs and blood vessels. Therefore, he underwent resection of huge retroperitoneal tumor, left colon, left kidney, left suprarenal gland, part of stomach and pancreatic body tail under general anesthesia. Due to the large surgical trauma, more bleeding and low blood pressure, he was admitted to the ICU for blood transfusion, fluid infusion and pressure boosting. The literature about SPG in the past 10 years in the database of the National Library of Medicine (PubMed) was searched, and the characteristics of the disease, the related factors of the disease and the treatment measures were emphatically discussed. Results The patient developed septic shock due to intraperitoneal infection on the 3rd day after operation, and gradually developed symmetrical ischemic necrosis of both hands and feet on the 4th day. According to the characteristics of the disease and clinical features, the patient was diagnosed with SPG. A total of 18 foreign English literatures were retrieved, involving 24 SPG patients. In combination with this case, 25 patients were included, including 10 males (40%) and 15 females (60%). The male to female ratio was 1:1.5. The average age was (48.8±15.1) years for males and (49.8±16.2) years for females. There was no history of vascular related diseases in the past. The main clinical features were symmetrical ischemic necrosis of both hands and (or) lower limbs and feet (100%), which was related to septic shock (100%), microbial infection (52%), disseminated intravascular coagulation (DIC) (52%), liver function damage (20%), and the use of vasoactive drugs (80%). The treatment effect was poor, the death mortality was 24% (6/25), and the amputation rate of the surviving patients was as high as 78.9% (15/19). Only one case of blood adsorption treatment was effective. Conclusions The occurrence of SPG in septic shock patients may be related to the pathophysiological changes such as septic shock, DIC, lack of natural anticoagulants, and the role of vasoactive drugs. Clinicians need to pay great attention to improving the diagnosis and treatment of SPG.

Objective To investigate the effect and potential mechanism of angiopoietin 1 (Ang1) on choroidal neovascularization (CNV) of rats. Methods A total of 30 Norwegian (BN) rats aged 6-8 weeks were randomized into three groups (n=10/group): normal group, model group, and Ang1 treatment group. The normal group was not processed, but the other two groups used multi-wavelength krypton laser to model the eyes of BN rats. We then performed fundus fluorescein angiography 14 days post-surgery. After confirming the success of the surgery, on the next day, the Ang1 treatment group received 200 μg/L Ang1 20 μl through vitreous cavity injection, while the other two groups received an equal volume of saline. After another 10-day, we performed Fundus fluorescein angiography examination, measured the CNV area through choroidal patching using FITC-labeled dextran (FITC-dextran) cardiac perfusion, and observed the retinal-choroidal structure changes of rats by Hematoxylin-eosin staining (HE) staining. We also detected the expression of Ang1, Rap1, GAPRap1, and vascular endothelial-cadherin (VE-cadherin) in the retinal-choroidal-sclera complex by Western blotting. Next, we cultured the rat choroidal vascular endothelial cells (RCVECs). When the cells were in the logarithmic growth phase, we stimulated these cells with vascular endothelial growth factor (VEGF) and cultured them for 24 hours, and divided into negative control group (siRNA-NC group), GAPRap1-siRNA group and GAPRap1-siRNA+Ang1 group. We further transfected cells with siRNA-NC (siRNA-NC group) or GAPRap1 small interfering RNA (GAPRap1-siRNA group and GAPRap1-siRNA+Ang1 group). In the GAPGAPRap1 small interfering RNA transfected cells, 6 hours after transfection, we set aside some cells coculture with 200 μg/L Ang1 (GAPRap1-siRNA+Ang1 group). After another 24 hours, we extracted and quantified the expression levels of GAPRap1, Rap1, and VE-cadherin by Western blotting. We detected the expression of VE-cadherin using immunofluorescence. Results Compared with normal group, in model group, the neovascular leakage area and choroidal damage degree significantly increased (P<0.01), the expression of GAPRap1 and VE-cadherin proteins significantly reduced (P<0.05), and the expression of Rap1 had no significant change (P>0.05). Compared with model group, in the Ang1 treatment group the neovascular leakage area and choroidal damage degree were significantly reduced (P<0.01), the expression of GAPRap1 and VE-cadherin proteins in the choroid and cells significantly increased (P<0.01), the expression of Rap1 had no statistical change (P>0.05). In choroidal tissue, the expression of Ang1 protein in Ang1 treatment group was significantly higher than that in the other two groups (P<0.01). In the cell experiment, the expressions of GAPRap1 and VE-cadherin in GAPRap1-siRNA group were significantly lower than those in the GAPRap1-siRNA+Ang1 group and the siRNA-NC group (P<0.01), while the expression of Rap1 had no significant change (P>0.05). The immunofluorescence results showed that the fluorescence of VE-cadherin in the GAPRap1-siRNA group was significantly lower than that in the GAPRap1-siRNA+Ang1 group and siRNA-NC group (P<0.001). Conclusion Ang1 can reduce the leakage of choroidal neovascularization in rats, which has an inhibitory effect on CNV growth, and its mechanism may be related to the enhancement of cell adhesion through the GAPRap1-VE-cadherin pathway.

Objective To investigate the value of nomogram based on lactate-to-albumin ratio (L/A) combined with neutrophil-to-lymphocyte ratio (NLR) for predicting the early prognosis of patients with acute respiratory distress syndrome (ARDS). Methods A total of 115 patients with ARDS admitted in the Department of Critical Care Medicine of the Second Hospital of Lanzhou University from March 2018 to June 2022 were retrospectively analyzed, and divided into survival group (n=62) and death group (n=53) depending on their clinical outcomes at 28 days after treatment. The general clinical data, blood routine, serum albumin, blood gas analysis, sequential organ failure (SOFA) score, acute physiology and chronic health evaluation Ⅱ (APACHE Ⅱ) score, Murray lung injury (Murray) score, number of organ failure, cause of ARDS, ICU stay, mechanical ventilation time, 28-day mortality were collected within 24 hours of ICU admission. At the same time, the L/A and NLR were calculated. Univariate and multivariate logistic regression analysis were performed to screen the independent risk factors affecting the prognosis of ARDS and to construct a clinical prediction model. The nomogram was drawn to visualize the clinical model. Finally, receiver operating characteristic (ROC) curve and calibration curve were used to verify the accuracy of the nomogram, a decision curve analysis was also performed to evaluate the clinical usefulness of the nomogram. Results The age, APACHE II, SOFA, and Murray scores, number of organ failure, proportion of pulmonary ARDS, neutrophil count (NEU), NLR, L/A, and blood lactate level in death group were significantly higher than those in survival group, the oxygenation index (PaO₂/FiO₂), proportion of extra pulmonary ARDS, lymphocyte count (LYM), and platelet count (PLT) were significantly lower than those in survival group (P<0.05). Univariate analysis and multivariate logistic regression analysis showed that age, SOFA score, the cause of ARDS, NLR and L/A were the independent risk factors for prognosis of ARDS (P<0.05). In addition, ROC curve analysis showed that the area under the ROC curve (AUC) of age, SOFA score, cause of ARDS, NLR and L/A in predicting the 28-day prognosis of ARDS patients were 0.651, 0.777, 0.579, 0.727 and 0.753, respectively. But the AUC of ARDS cause combined with age and SOFA score was 0.830, which was significantly higher than that of age (P=0.000) and ARDS cause (P=0.000), but there was no significant difference in SOFA score (P=0.064). The nomogram based on all these five independent risk factors was constructed, which was defined as Model 1. At the same time, the combined model constructed by age, cause of ARDS and SOFA was defined as Model 2. The ROC comparison between the two showed that Model 1 had a higher ability to predict the prognosis of ARDS (AUC: 0.889 vs. 0.830), and the calibration curve and decision curve analysis showed that Model 1 had better accuracy and potential application value in predicting the prognosis of ARDS patients. Conclusion The nomogram constructed based on L/A combined with NLR can predict the early prognosis of patients with ARDS, and has high predictive efficiency and clinical benefit.

Objective To investigate the central mechanism of glial cells of the dorsal reticular nucleus (DRt) in the modulation of chronic orofacial pain after removal of experimental occlusal interference(EOI) in rats. Methods Twenty-four male SD rats (180-200 g) were randomly divided into three groups (8 in each group): sham group, EOI hyperalgesia maintaining group (occlusal interference appliance removed on day 8 after wearing 0.4 mm thick crowns), EOI hyperalgesia maintaining+DRt damage group (EOI hyperalgesia maintaining rats were injected with ibotenic acid to damage DRt). The non-reflexive behaviors of the three groups were evaluated by using orofacial operant test on 7, 10, 14 d after model establishment. Nine male SD rats were randomly divided into three groups (3 in each group): sham group, EOI hyperalgesia maintaining group (day 8 after wearing 0.4 mm thick crowns, before removal of EOI), EOI hyperalgesia maintaining group 6 d (6 days after EOI removed on day 8). DRt sections were obtained and processed for immunofluorescence staining for glai fibrillary acidic protein (GFAP) and OX-42. The levels of expression were hemi-quantitatively analyzed to evaluate the fluorescence area and fluorescence intensity of astrocytes and microglia. Results EOI hyperalgesia maintaining group and EOI hyperalgesia maintaining+DRt damage group exhibited lower feeding time in orofacial operant test, which implied hyperalgesia (P<0.05). The hyperalgesia in EOI hyperalgesia maintaining group persisted after the removal of EOI, and the difference was statistically significant at 10 d and 14 d compared with sham group (P<0.05), while the hyperalgesia in the EOI hyperalgesia maintaining+DRt damage group showed a rebound trend, and the difference was not statistically significant at 10 d and 14 d compared with sham group (P>0.05). The total feeding time at 14 d significant longer compared with the EOI hyperalgesia maintaining group (P<0.05). Semi-quantitative analysis of immunofluorescence staining showed that the fluorescence area and fluorescence intensity of GFAP and OX-42 in EOI hyperalgesia maintaining group did not show any increase compared with that of sham group (P>0.05), whereas the fluorescence area and fluorescence intensity of GFAP as well as the fluorescence area of OX-42 in EOI hyperalgesia maintaining group 6 d were significantly higher (P<0.05). The fluorescence area and fluorescence intensity of GFAP and OX-42 in EOI hyperalgesia maintaining group did not show any increase compared with that of EOI hyperalgesia maintaining group 6 d (P>0.05). Conclusion DRt was involved in the persistent maintenance of hyperalgesia in the EOI model after removal of occlusal interference, in which astrocyte and microglia activation in DRt were the central mechanisms for the maintenance of hyperalgesia.

Objective To investigate the predictive value of serum C-reactive protein/albumin ratio (CAR) with other inflammatory parameters for in-hospital adverse events in patients with acute ST segment elevation myocardial infarction (STEMI) undergoing emergency percutaneous coronary intervention (PCI). Methods A total of 340 patients with STEMI who underwent emergency PCI in 904 Hospital of PLA Joint Logistics Support Force from January 2016 to December 2020 were consecutively included in this retrospective analysis. Patients with STEMI were divided into two groups according to the presence or absence of adverse cardiovascular events during their hospital stay after emergent PCI: patients with major adverse cardiovascular events (MACEs, n=92) and non-MACEs (n=248). Serum C-reactive protein (CRP), white blood cells, neutrophils, lymphocytes, and other indicators were measured in both groups, and inflammatory parameters such as CAR, neutrophil/lymphocyte ratio (NLR), and platelet/lymphocyte ratio (PLR) were calculated. Univariate and multivariate logistic regression analyses were used to screen the independent risk factors correlated with the occurrence of MACEs during the hospitalization after PCI in STEMI patients. Correlations between each inflammatory parameter and MACEs were analyzed by Spearman correlation analysis. Receiver operating characteristic (ROC) curve to evaluate the efficacy size of each inflammatory parameter in predicting the occurrence of MACEs during PCI hospitalization in patients with STEMI. Results Comparison of general data between the two groups revealed that patients in MACEs group had a higher frequency of age, history of diabetes mellitus, polydactyly, and serum composite inflammatory parameters (CAR, NLR, PLR, MLR, and SII) than those in non-MACEs group, the univariate and multivariate results showed that CAR was a risk factor for the occurrence of MACEs during the hospitalization after PCI in patients with STEMI. Spearman correlation analysis showed that CAR was significantly correlated with the occurrence of MACEs during hospitalization, such as cardiogenic shock (r=0.134, P<0.05), heart failure (r=0.436, P<0.05), and all-cause death (r=0.185, P<0.05). The results of ROC curves showed that CAR (AUC=0.751, 95%CI 0.691-0.811, P<0.001) had better predictive value for the occurrence of MACEs after PCI than NLR (AUC=0.643, 95%CI 0.576-0.711, P<0.001), PLR (AUC=0.598, 95%CI 0.530-0.665, P=0.006) and other inflammatory parameters. Conclusion Compared with traditional inflammatory parameters, CAR has better predictive efficacy for the occurrence of MACEs during hospitalization in STEMI patients undergoing emergency PCI, and can better guide the clinic.

Pyroptosis is a caspase-dependent, gasdermin protein mediated inflammatory programmed cell death mode, which is involved in the occurrence and development of a variety of diseases. Mesenchymal stem cells (MSCs) are adult pluripotent stem cells derived from the mesoderm and widely distributed in various tissues of human body and show strong secretory capacity. Exosomes, microvesicles, cytokines and other substances secreted by MSCs can regulate microglia phenotypic transformation, promote mitochondrial autophagy, protect mitochondrial function, regulate endoplasmic reticulum stress and calcium homeostasis, thereby inhibiting the pyroptosis mediated by inflammasome and improving the progression and prognosis of related diseases. In addition, pyroptosis has also been reported in MSCs itself. In present paper, the research progress has been reviewed on the role and mechanism of MSCs in regulating pyroptosis, so as to deepen people's understanding on the relationship between MSCs and cell pyroptosis.