Objective To investigate whether microRNA-21-5p(miR-21)plays a protective role in hyperoxia-induced acute lung injury(HALI)by regulating ferroptosis through the STAT3/P53/SLC7A11 axis.Methods The interaction between STAT3 and P53 was analyzed by co-immunoprecipitation(Co-IP).Fifty 9-week-old male C57BL/6J mice were randomly divided into normoxia(Control)group,HALI group,miR-21 overexpression(miR-21)group,STAT3 inhibitor(HY-13818)group,and ferrostatin-1(Fer-1)group.After the mice from the miR-21 group received miR-21-5p AAV6 or empty vector via tracheal catheter instillation,the animals were then monitored for 3 weeks.The HY-13818 group was intraperitoneally injected with HY-13818(10 mg/kg)3 times weekly for 2 weeks.The Fer-1 group received 0.8 mg/kg ferrostatin-1 via tail vein injection once daily for 2 consecutive days during modeling.The HALI model was established by exposure to>90%oxygen.After 48 h of hyperoxia,blood samples were collected via orbital sampling for RT-PCR analysis of miR-21 expression.Lung tissues were harvested for wet/dry weight ratio and assessment of histopathological changes via HE staining for lung injury score.Activity of superoxide dismutase(SOD)and contents of malondialdehyde(MDA),Fe2?,glutathione(GSH),and reactive oxygen species(ROS)were measured using photocolorimetry,spectrophotometry and fluorometry.Western blotting was used to evaluate the protein expression of STAT3,P53,SLC7A11,and GPX4.Results The results of Co-IP showed that STAT3 could bind to P53.The HALI group exhibited obviously destroyed alveolar structure,disordered arrangement,thickened interval,with a large number of infiltrated neutrophils and collapsed alveoli,and had significantly increased pathological score of lung injury and ratio of lung Wwet/Ddry weight when compared with the Control group(P<0.05).In the miR-21 group,HY-13818 group and Fer-1 group,the severity of lung injury was significantly reduced,and the pathological score of lung injury and the ratio of Wwet/Ddry weight were decreased(P<0.05)when compared with the HALI group.Compared with the control group,the contents of MDA,Fe2+and ROS were increased(P<0.05),the activity of SOD and content of GSH were declined(P<0.05),the protein levels of STAT3 and P53 were increased(P<0.05),and those of SLC7A11 and GPX4 were decreased(P<0.05)in the HALI group.Compared with the HALI group,decreased MDA and ROS levels(P<0.05),enhanced SOD activity,Fe2+and GSH levels(P<0.05),down-regulation of STAT3 and P53(P<0.05)and up-regulation of SLC7A11 and GPX4(P<0.05)were observed in the miR-21 group and HY-13818 group.Conclusion MiR-21 alleviates HALI,which may be related to its inhibition of ferroptosis through the STAT3/P53/SLC7A11 axis.

Objective To investigate the effects of whole breast combined with regional nodal hypofractionated radiotherapy compared with conventional fractionated radiotherapy on peripheral lymphocyte count (PLC) and neutrophil-to-lymphocyte ratio (NLR) in patients with breast cancer after breast-conserving surgery. Methods This retrospective study enrolled 94 patients with breast cancer who underwent breast-conserving surgery in Tangshan People’s Hospital between April 2022 and April 2024. All patients received whole breast combined with regional nodal radiotherapy. These patients were divided into hypofractionated radiotherapy group (n = 42) and conventional fractionated radiotherapy group (n = 52) according to radiotherapy regimen. Differences in PLC and NLR before and after radiotherapy between the two groups were compared using the t-test. Results Before radiotherapy, the baseline PLC and NLR were comparable between the two groups (P > 0.05). After radiotherapy, PLC decreased and NLR increased in both groups (P < 0.05). The PLC in the hypofractionated radiotherapy group was significantly higher than that in the conventional fractionated radiotherapy group (0.95 ± 0.30 vs. 0.77 ± 0.26, P = 0.002), and the NLR was significantly lower in the hypofractionated radiotherapy group than in the conventional fractionated radiotherapy group (2.86 ± 1.27 vs. 3.67 ± 1.59, P = 0.010). Conclusion Compared with conventional fractionated radiotherapy, whole breast combined with regional nodal hypofractionated radiotherapy has less impact on PLC and NLR in patients with breast cancer after breast-conserving surgery.

OBJECTIVE To investigate the inhibitory effect mechanism of Anzheng Kangliu Decoction against colorectal cancer by suppressing glycolysis through regulation of the phosphatidylinositol 3-kinase(PI3K)/protein kinase B(Akt)/mammalian target of rapamycin(mTOR)signaling pathway.METHODS Human colorectal cancer SW620 cells were treated with Anzheng Kangliu De-coction,and cell proliferation and migration abilities were assessed.Forty-two BALB/c nude mice were randomly divided into a blank control group,model group,5-fluorouracil(5-FU)group(0.025 g·kg-1),Anzheng Kangliu Decoction low-dose group(7.67 g·kg-1),medium-dose group(15.34 g·kg-1),and high-dose group(30.68 g·kg-1).The inhibitory effect of Anzheng Kan-gliu Decoction on subcutaneous xenograft tumors was evaluated by observing body weight,tumor volume,tumor mass,HE staining,im-munohistochemical staining of Ki67 and other indicators.High-throughput transcriptome sequencing was performed to identify differen-tially expressed genes and pathways in tumor tissues between the model group and the Anzheng Kangliu Decoction medium-dose group,elucidating the potential mechanism of Anzheng Kangliu Decoction against colorectal cancer.Glucose and lactate assay kits were used to measure glucose consumption and lactate production in SW620 cells and tumor tissues after Anzheng Kangliu Decoction intervention.Western blot was employed to detect the expression levels of p-PI3K/PI3K,p-Akt/Akt,p-mTOR/mTOR,hexokinase 2(HK2),and lactate dehydrogenase A(LDHA)in SW620 cells and tumor tissues following Anzheng Kangliu Decoction treatment.RE-SULTS In vitro cell experiments demonstrated that,compared with the blank control group,Anzheng Kangliu Decoction intervention significantly inhibited the proliferation and migration of SW620 cells(P<0.01),reduced glucose consumption and lactate production(P<0.05,P<0.01),and downregulated the protein expression levels of p-PI3K/PI3K,p-Akt/Akt,p-mTOR/mTOR,HK2,and LDHA(P<0.05,P<0.01).In vivo animal experiments revealed that,compared with the model group,Anzheng Kangliu Decoction suppressed the growth of subcutaneous xenograft tumors in nude mice(P<0.01),increased tumor tissue necrosis,decreased glucose consumption and lactate production in tumor tissues(P<0.05,P<0.01),and reduced the protein expression levels of p-PI3K/PI3K,p-Akt/Akt,p-mTOR/mTOR,HK2,and LDHA(P<0.05,P<0.01).CONCLUSION Anzheng Kangliu Decoction exerts an in-hibitory effect on colorectal cancer,and its mechanism may be associated with the suppression of glycolysis through regulation of the PI3K/Akt/mTOR signaling pathway.

Objective To construct a regional collaborative cloud-based treatment model treatment model for patients with severe road traffic injuries,and to preliminarily evaluate the differences in nursing timeliness indicators and outcomes.Methods The regional collaborative cloud-based treatment platform includes 4 ports,including public security traffic police,pre-hospital emergency center,regional trauma center triage,and regional trauma center resuscitation unit.This forms a standardized real-time interactive treatment process between regional medical services and police for patients with severe road traffic injuries.Using a concurrent control study design,241 patients with severe road traffic injuries admitted to the emergency department of a regional trauma center in Zhejiang Province from May 2022 to May 2024 were selected as the study subjects.Among them,120 patients treated with the regional real-time collaborative cloud-based treatment model were designated as an experimental group,while 121 patients treated with the original trauma care process were designated as a control group.The differences in timeliness indicators and outcomes between the 2 groups were compared.Results The study included 241 patients with severe trauma.After the application of the regional collaborative cloud-based treatment model,the time from the scene of the accident to the hospital,the proportion of information early waming,completion time of pre-examination and triage,waiting time of the trauma team,the time of the first CT,the length of multidisciplinary consultation,and the time for completing hospitalization procedures in the experimental group were shorter than those in the control group(P＜0.05),the proportion of information early waming in the experimental group was 100％(120/120),and the proportion of information early waming in the control group was 52.1％(63/121).The difference between the two groups was statistically significant(P＜0.001).The survival rate of the experimental group was 90.8％(109/120),and that of the control group was 86.0％(104/121).There was no significant difference between the two groups(x2=1.399,P=0.237).Conclusion The regional collaborative cloud-based treatment model improves the timeliness and standardization of the treatment of patients with severe road traffic injury,which has certain reference significance and promotion value.

This report summarizes the emergency care and nursing interventions for a Parkinson's disease patient with severe hypothermia complicated by ventricular arrhythmia.Key nursing points included continuous core temperature monitoring with goal-directed,phased,progressive rewarming;proactive identification and rapid response to arrhythmias;precise fluid management and skin protection to dynamically optimize blood perfusion and pressure redistribution;vigilant prevention and early intervention of hypothermia-related complications.With multidisciplinary treatment and meticulous nursing care,the patient was successfully discharged after 17 days of hospitalization with a favorable recovery.At the three-month follow-up after discharge,the patient had recovered well with no recurrence of similar episodes.

Objective To explore the mechanism of Bufei Jiedu Granules in the treatment of methicillin-resistant Staphylococcus aureus(MRSA)chronic infection using network pharmacology;To verify it through animal experiments.Methods Active components and potential targets in Bufei Jiedu Granules were screened through the TCMSP database,and genes related to MRSA infection were retrieved through GeneCards,OMIM,DisGeNET,TTD,DrugBank and PharmGKB databases.The STRING database was employed to construct a protein-protein interaction network on common targets,and GO and KEGG pathway enrichment analysis were conducted to identify key signaling pathways for Bufei Jiedu Granules treatment of MRSA infection.The effects of Bufei Jiedu Granules on bacterial load and pathological changes in the lung,liver and kidney of MRSA chronic infection mice models were evaluated through WT and T/B immune cell deficient Rag2-/-mouse animal experiments.The mRNA expressions of inflammatory factors(IFN-γ,IL-10)and immune checkpoints(PD1,TIM3)were detected.Results Totally 54 active components related to Bufei Jiedu Granules were selected,and 50 potential targets related to MRSA infection were identified.118 signaling pathways significantly associated with MRSA infection were identified through GO and KEGG pathway enrichment analysis,in which the JAK-STAT signaling pathway,Th17 cell differentiation,and PD-L1 expression and PD-1 checkpoint pathway were closely related to cell activation and T cell differentiation.Animal experimental results indicated that Bufei Jiedu Granules could effectively reduce the bacterial load in organs and ameliorate the pathological damage in the chronic MRSA infection mouse model,increase the mRNA expression of IFN-γ in the lung tissue,and decrease the mRNA expressions of IL-10,PD1 and TIM3.Conclusion Bufei Jiedu Granules has the characteristics of multi-component and multi-target in the treatment of MRSA infection,and may be involved in adaptive immune activation to effectively treat chronic MRSA infection.

BACKGROUND:Umbilical cord mesenchymal stem cells present immunomodulatory function and multidirectional differentiation potential.Umbilical cord mesenchymal stem cells can actively improve the chronic low-grade inflammation state in type 2 diabetes mellitus and which is important for preventing the development of type 2 diabetes mellitus progression.OBJECTIVE:To review the research progress of umbilical cord mesenchymal stem cells in the treatment of type 2 diabetes mellitus through immunomodulatory effect.METHODS:Using"umbilical cord mesenchymal stem cells,UC-MSCs,mesenchymal stem cells,MSCs,type 2 diabetes mellitus,T2DM,immunity,insulin resistance,inflammation"as Chinese and English search terms,articles were searched on CNKI,Web of Science and PubMed databases.Relevant reviews,research papers and theses were screened and 88 papers were collected for summarization based on the inclusion and exclusion criteria.RESULTS AND CONCLUSION:Umbilical cord mesenchymal stem cells can effectively delay the occurrence and development of type 2 diabetes mellitus by reducing inflammatory response,inducing macrophages to M2 polarization,increasing the sensitivity of target organs to insulin,improving insulin resistance,and alleviating the dysfunction of islet beta cells through immune regulation.However,before umbilical cord mesenchymal stem cell transplantation can become a routine treatment,large-scale basic and applied basic research is needed to determine the optimal treatment regimen and efficacy.

OBJECTIVE To investigate of the regulatory effects of Budi Shenlian Recipe on gut microbiota and the phenotypic transition of tumor-associated macrophages(TAMs)in colorectal cancer(CRC)mice.METHODS Forty male BALB/c mice were divided into blank control group,model group,positive control group,high-dose Budi Shenlian Recipe group,and low-dose Budi Shenlian Recipe group(n=8).CRC-bearing models were established by subcutaneous injection of CT26 cells.Additionally,10 male BALB/c mice were divided into the Budi Shenlian Recipe fecal microbiota transplantation(BFMT)group and model fecal microbiota transplantation(MFMT)group(n=5).The gut microbiota of these mice was cleared using a mixed solution of quadruple antibiotics,followed by subcutaneous injection of CT26 cells to construct pseudo-germ-free CRC-bearing mice.Fecal samples from the model group and high-dose Budi Shenlian Recipe group were collected to prepare fecal microbiota solutions.The BFMT group received gavage with fecal microbiota solution from the high-dose Budi Shenlian Recipe group,while the MFMT group received gavage with fecal micro-biota solution from the model group.Tumor volume changes were observed and recorded.HE staining was used to assess pathological changes in tumor tissues.16S sequencing was performed to analyze changes in gut microbiota.Flow cytometry and immunofluorescence staining were used to evaluate the proportion of M1/M2 type TAMs in tumor tissues.ELISA was used to detect differences in TNF-α and IL-10 levels in tumor tissues.RESULTS Compared to the model group,the tumor volume of mice in the positive control group,high-dose Budi Shenlian Recipe group,and low-dose Budi Shenlian Recipe group grew more slowly(P<0.01).HE staining showed necrotic areas in tumor tissues and reduced mitotic figures in the positive control and Budi Shenlian Recipe groups compared to the model group.16S rRNA sequencing showed no significant differences in Chao1 and ACE indices between the high-dose Budi Shenlian Recipe group and the model group.PCoA analysis indicated a distinct microbial community structure between the blank group and mod-el group,with the microbial structure of CRC mice in the Budi Shenlian Recipe group closer to that of the blank group.Compared to the blank group,the model group showed a significant decrease in the proportion of Muribaculaceae,Muribaculum,Alloprevotella,and Prevotellaceae_UCG-001,and a significant increase in Lachnospiraceae_NK4A136_group,Bacteroides,and Helicobacter.After admin-istering Budi Shenlian Recipe to CRC mice,the community structure of some mice partially reverted to the level of the blank group.Transcriptome sequencing revealed that the most significant biological process(BP)among upregulated genes was the negative regulation of macrophage migration,suggesting that Budi Shenlian Recipe can reduce macrophage migration.Moreover,compared to the model group,the proportion of TAMs cells in the tumor tissues of the Budi Shenlian Recipe group significantly decreased(P<0.001).Simultaneously,compared to the model group,the proportion of M1 type TAMs in the Budi Shenlian Recipe group significant-ly increased(P<0.000 1),while the proportion of M2 type TAMs significantly decreased(P<0.05).Immunofluorescence analysis showed the same trend as flow cytometry.The content of TNF-α in tumor tissues of the Budi Shenlian Recipe group significantly in-creased(P<0.001),and IL-10 content significantly decreased(P<0.001).Additionally,compared to the MFMT group,the tumor volume in the BFMT group grew more slowly(P<0.0001).HE staining showed increased necrotic areas,sparser cell arrangement,and reduced pathological mitosis in the BFMT group.Furthermore,compared to the MFMT group,the proportion of TAMs cells in the tumor tissues of the BFMT group significantly decreased(P<0.01).Compared to the MFMT group,the proportion of M1 type TAMs cells in the BFMT group increased(P<0.000 1),while the proportion of M2 type TAMs cells decreased(P<0.01).Immunofluores-cence analysis further confirmed that Budi Shenlian Recipe fecal microbiota transplantation can reduce the proportion of TAMs in the tumor tissues of CRC mice and promote the conversion from M2 to M1 type,thereby reducing immune suppression in the tumor micro-environment.CONCLUSION Budi Shenlian Recipe can improve gut microbiota dysbiosis in CRC mice and exert anti-CRC effects by reducing tumor infiltration of TAMs and modulating the phenotypic transition of TAMs.There may be a certain correlation between these two effects.

To summarize the emergency nursing experience of 1 patient with neck suicide complicated with airway obstruction and hemorrhagic shock.Nursing points:to ensure airway safety and establish artificial airway;to optimize airway management and implement early sedation and wake-up;to control injury bleeding and limited fluid resuscitation;to establish a micro blood station in the emergency department and start a high-dose blood transfusion procedure;to carry out the refined target body temperature management to reduce complications;to optimize speech communication strategies and implement early psychological care.After 7 days of careful treatment and nursing,the patient's condition improved and recovered.After 2 months of follow-up,the patient recovered well.

Body weight abnormalities, including overweight, obesity, and underweight, have become a dual public health challenge in Chinese adults: overweight and obesity lead to a variety of chronic complications, while underweight increases the risks of malnutrition, sarcopenia, and organ dysfunction. To systematically address these issues, multidisciplinary experts in endocrinology, sports science, nutrition, and psychiatry from various regions have held multiple weight management seminars. Based on the latest epidemiological data and clinical evidence, they expanded the guideline to include assessment and intervention strategies for underweight, in addition to the core content of obesity management. This guideline outlines the etiological mechanisms, evaluation methods, and multidimensional management strategies for overweight and obesity, covering key areas such as diagnosis and assessment, medical nutrition therapy, exercise prescription, pharmacological intervention, and psychological support. It is intended to provide a scientific and standardized approach to weight management across the adult population, aiming to curb the rising prevalence of obesity, mitigate complications associated with abnormal body weight, and improve nutritional status and overall quality of life.