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Comprehensive analysis of the gut microbiome and posttranslational modifications elucidates the route involved in microbiota-host interactions

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Zoological Research 2024年第1期45卷 95-107页

作者： Hai-Yang Wang Lan-Xiang Liu Xue-Yi Chen Yang-Dong Zhang Wen-Xia Li Wen-Wen Li Lian Wang Xiao-Long Mo Hong Wei Ping Ji Peng Xie NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China College of stomatology and affiliated Stomatological hospital of chongqing medical university Chongqing 401147China chongqing Key Laboratory for Oral Diseases and Biomedical Sciences Chongqing 401147China Department of Neurology Yongchuan Hospital of Chongqing Medical UniversityChongqing 402160China Department of Pathology Faculty of Basic MedicineChongqing Medical UniversityChongqing 400016China Department of Neurology First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China Yu-Yue Pathology Scientific Research Center Chongqing 401329China

The gut microbiome interacts with the host to maintain body homeostasis,with gut microbial dysbiosis implicated in many ***,the underlying mechanisms of gut microbe regulation of host behavior and brain functions remain *** study aimed to elucidate the influence of gut microbiota on brain functions via post-translational modification mechanisms in the presence or absence of bacteria without any *** conducted succinylome analysis of hippocampal proteins in germ-free(GF)and specific pathogen-free(SPF)mice and metagenomic analysis of feces from SPF *** results were integrated with previously reported hippocampal acetylome and phosphorylome data from the same batch of *** bioinformatics analyses revealed 584 succinylation sites on 455 proteins,including 54 up-regulated succinylation sites on 91 proteins and 99 down-regulated sites on 51 proteins in the GF mice compared to the SPF *** constructed a panoramic map of gut microbiota-regulated succinylation,acetylation,and phosphorylation,and identified cross-talk and relative independence between the different types of post-translational modifications in modulating complicated intracellular *** correlation analysis indicated that 13 taxa,predominantly belonging to the Bacteroidetes phylum,were correlated with the biological functions of post-translational *** correlations between these taxa and succinylation and negative correlations between these taxa and acetylation were identified in the modulation of intracellular *** study highlights the hippocampal physiological changes induced by the absence of gut microbiota,and proteomic quantification of succinylation,phosphorylation,and acetylation,contributing to our understanding of the role of the gut microbiome in brain function and behavioral phenotypes.

关键词： Gut microbiota Hippocampal protein Post-translational modifications Succinylation Acetylation Phosphorylation

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HSP110 aggravates ischemia-reperfusion injury after liver transplantation by promoting NF-κB pathway

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Hepatobiliary & Pancreatic Diseases International 2024年第4期23卷 344-352页

作者： Qing-Zhi Hu Zhen-Rui Cao Wei-Xiong Zheng Min-Jie Zhao Jun-Hua Gong Cong Chen Zhong-Jun Wu Rui Tao Department of Hepatobiliary Surgery Bishan Hospital of Chongqing Medical UniversityChongqing 402760China Department of Cardiothoracic Surgery the First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China c Department of Hepatobiliary Surgery the First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China Department of Hepatobiliary Surgery the Second Affiliated Hospital of Chongqing Medical UniversityChongqing 400010China

Background:Ischemia-reperfusion injury(IRI)poses a significant challenge to liver transplantation(LT).The underlying mechanism primarily involves overactivation of the immune *** shock protein 110(HSP110)functions as a molecular chaperone that helps stabilize protein ***:An IRI model was established by performing LT on Sprague-Dawley rats,and HSP110 was silenced using ***-eosin staining,TUNEL,immunohistochemistry,ELISA and liver enzyme analysis were performed to assess IRI following *** blotting and quantitative reverse transcription-polymerase chain reaction were conducted to investigate the pertinent molecular ***:Our findings revealed a significant increase in the expression of HSP110 at both the mRNA and protein levels in the rat liver following LT(P<0.05).However,when rats were injected with siRNAHSP110,IRI subsequent to LT was notably reduced(P<0.05).Additionally,the levels of liver enzymes and inflammatory chemokines in rat serum were significantly reduced(P<0.05).Silencing HSP110 with siRNA resulted in a marked decrease in M1-type polarization of Kupffer cells in the liver and downregulated the NF-κB pathway in the liver(P<0.05).Conclusions:HSP110 in the liver promotes IRI after LT in rats by activating the NF-κB pathway and inducing M1-type polarization of Kupffer *** HSP110 to prevent IRI after LT may represent a promising new approach for the treatment of LT-associated IRI.

关键词： Ischemia-reperfusion injury Liver transplantation Inflammation HSP110 Heat shock proteins NF-κB

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ZIF-8 coated gold nanospheres: A multi-responsive drug delivery system promoting the killing effect of photothermal therapy against osteosarcoma cells

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Nano Research 2024年第3期17卷 1772-1784页

作者： Miao Lei Weiye Cai Luetao Zou Bin Yu Lin Chen Yang Cao Shanlin Xiang Chao Song Jiandu Lei Wei Jiang Zhenming Hu Department of Orthopedics Orthopedic Laboratory of Chongqing Medical UniversityThe First Affiliated Hospital of Chongqing Medical UniversityNo.1 Youyi RoadChongqing 400010China The affiliated Traditional Chinese Medicine hospital of Southwest medical university Luzhou 646699China Department of Orthopedics The Third Affiliated Hospital of Chongqing Medical UniversityChongqing 400010China Department of Radiology The First Affiliated Hospital of Chongqing Medical UniversityNo.1 Youyi RoadChongqing 400010China Department of Orthopedics Chongqing University Three Gorges HospitalChongqing 404000China Department of Geriatrics The Affiliated Hospital of Guizhou Medical UniversityGuiyang 550025China Beijing Key Laboratory of Lignocellulosic Chemistry College of Material Science and TechnologyBeijing Forestry UniversityBeijing 100083China

Photothermal therapy(PTT)has been widely used in the treatment of tumors,but its efficacy is greatly limited by the inability of precise drug delivery and the increase of heat shock proteins(HSPs)caused by high *** article describes a therapeutic strategy to enhance PTT with starvation therapy in conjunction with ferroptosis mechanism.A nanoparticle platform ZIF-8@GA was constructed by wrapping together glucose oxidase(GOX)and gold nanospheres(AuNPs)loaded with dihydroartemisinin(DHA)with zeolitic imidazolate framework-8(ZIF-8).This platform can take advantage of the micro-environment of osteosarcoma(OS)cells,featuring low pH and high reactive oxygen species(ROS),for precision drug *** can effectively catalyze glucose to produce gluconic acid and H_(2)O_(2),and DHA can also induce ROS production in OS *** produced by GOX and DHA can further generate lipid peroxidation(LPO)and lead to ferroptosis of OS *** the same time,ROS and LPO produced can inhibit the expression of HSPs,thereby increasing the therapeutic effect of *** vitro experiments show that the nanoparticles are pH and ROS responsive.1μg/mL GOX combined with 0.2μg/mL DHA promotes ferroptosis of OS cells,and increases the killing effect of near-infrared(NIR)on OS *** in vivo experiments showed that the nano drug-delivery platform combined with PTT can effectively inhibit the growth of OS ***,this study provides a new idea for the treatment of OS with biomaterials combined with various treatment methods.

关键词： zeolitic imidazolate framework-8(ZIF-8) gold nanospheres(AuNPs) photothermal therapy(PTT) starvation therapy ferroptosis

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Metadherin promotes stem cell phenotypes and correlated with immune infiltration in hepatocellular carcinoma

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World Journal of Gastroenterology 2024年第8期30卷 901-918页

作者： Yi-Ying Wang Mei-Mei Shen Jian Gao Department of Gastroenterology The Second Affiliated Hospital of Chongqing Medical UniversityChongqing 400010China Department of Gastroenterology and Hepatology The Second Affiliated Hospital of Chongqing Medical UniversityChongqing 400010China

BACKGROUND Metadherin(MTDH)is a key oncogene in most cancer types,including hepato-cellular carcinoma(HCC).Notably,MTDH does not affect the stemness pheno-type or immune infiltration of *** To explore the role of MTDH on stemness and immune infiltration in *** MTDH expression in HCC tissues was detected using TCGA and GEO *** was used to analyze the tissue *** was stably knocked down or overexpressed by lentiviral transfection in the two HCC cell *** invasion and migration abilities of HCC cells were evaluated using Matrigel invasion and wound healing ***,we obtained liver cancer stem cells from the spheroids by culturing them in a serum-free *** expression was determined by western blotting and quantitative reverse transcri-ption *** cytometry,immunofluorescence,and tumor sphere formation assays were used to characterize stem-like *** effects of MTDH inhibition on tumor growth were evaluated in *** correlation of MTDH with immune cells,immunomodulators,and chemokines was analyzed using ssGSEA and TISIDB *** HCC tissues expressed higher levels of MTDH than normal liver *** MTDH expression was associated with a poor *** cells overex-pressing MTDH exhibited stronger invasion and migration abilities,exhibited a stem cell-like phenotype,and formed spheres;however,MTDH inhibition attenuated these *** inhibition suppressed HCC progression and CD133 expression in *** was positively correlated with immature dendritic,T helper 2 cells,central memory CD8^(+)T,memory B,activated dendritic,natural killer(NK)T,NK,activated CD4^(+)T,and central memory CD4^(+)T *** was negatively correlated with activated CD8^(+)T cells,eosinophils,activated B cells,monocytes,macrophages,and mast cells.A positive correlation was observed between the MTDH level and CXCL2 expression,whereas a negative correlation was observed between the MTDH level and CX3CL1 a

关键词： Metadherin Hepatocellular carcinoma Cancer stem cells Immune infiltration

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Is recovery enhancement after gastric cancer surgery really a safe approach for elderly patients?

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World Journal of Gastrointestinal Oncology 2024年第4期16卷 1334-1343页

作者： Zi-Wei Li Xiao-Juan Luo Fei Liu Xu-Rui Liu Xin-Peng Shu Yue Tong Quan Lv Xiao-Yu Liu Wei Zhang Dong Peng Department of Gastrointestinal Surgery The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China Department of Endoscopy Center The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400012China

BACKGROUND This study aimed to evaluate the safety of enhanced recovery after surgery(ERAS)in elderly patients with gastric cancer(GC).AIM To evaluate the safety of ERAS in elderly patients with *** The PubMed,EMBASE,and Cochrane Library databases were used to search for eligible studies from inception to April 1,*** mean difference(MD),odds ratio(OR)and 95%confidence interval(95%CI)were pooled for *** quality of the included studies was evaluated using the Newcastle-Ottawa Scale *** used Stata(V.16.0)software for data *** This study consists of six studies involving 878 elderly *** analyzing the clinical outcomes,we found that the ERAS group had shorter postoperative hospital stays(MD=-0.51,I2=0.00%,95%CI=-0.72 to-0.30,P=0.00);earlier times to first flatus(defecation;MD=-0.30,I²=0.00%,95%CI=-0.55 to-0.06,P=0.02);less intestinal obstruction(OR=3.24,I2=0.00%,95%CI=1.07 to 9.78,P=0.04);less nausea and vomiting(OR=4.07,I2=0.00%,95%CI=1.29 to 12.84,P=0.02);and less gastric retention(OR=5.69,I2=2.46%,95%CI=2.00 to 16.20,P=0.00).Our results showed that the conventional group had a greater mortality rate than the ERAS group(OR=0.24,I2=0.00%,95%CI=0.07 to 0.84,P=0.03).However,there was no statistically significant difference in major complications between the ERAS group and the conventional group(OR=0.67,I2=0.00%,95%CI=0.38 to 1.18,P=0.16).CONCLUSION Compared to those with conventional recovery,elderly GC patients who received the ERAS protocol after surgery had a lower risk of mortality.

关键词： Enhanced recovery after surgery Gastric cancer Elderly Mortality

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Elimination of methicillin‑resistant Staphylococcus aureus biofilms on titanium implants via photothermally‑triggered nitric oxide and immunotherapy for enhanced osseointegration

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Military medical Research 2024年第2期11卷 157-179页

作者： Yong‑Lin Yu Jun‑Jie Wu Chuan‑Chuan Lin Xian Qin Franklin R.Tay Li Miao Bai‑Long Tao Yang Jiao Department of Pathology Affiliated Hospital of Zunyi Medical UniversityZunyi 563003GuizhouChina Laboratory Research Center the First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China Department of Blood Transfusion Laboratory of Radiation Biologythe Second Affiliated HospitalArmy Military Medical UniversityChongqing 400037China Department of Reproductive Endocrinology Chongqing Health Center for Women and ChildrenChongqing 401147China The Graduate School Augusta UniversityAugustaGA 30912USA Department of stomatology the Seventh Medical Center of PLA General HospitalBeijing 100700China

Background:Treatment of methicillin-resistant Staphylococcus aureus(MRSA)biofilm infections in implant placement surgery is limited by the lack of antimicrobial activity of titanium(Ti)*** is a need to explore more effective approaches for the treatment of MRSA biofilm ***:Herein,an interfacial functionalization strategy is proposed by the integration of mesoporous polydopamine nanoparticles(PDA),nitric oxide(NO)release donor sodium nitroprusside(SNP)and osteogenic growth peptide(OGP)onto Ti implants,denoted as Ti-PDA@*** physical and chemical properties of Ti-PDA@SNP-OGP were assessed by scanning electron microscopy,X-ray photoelectron spectroscope,water contact angle,photothermal property and NO release *** synergistic antibacterial effect and elimination of the MRSA biofilms were evaluated by 2′,7′-dichlorofluorescein diacetate probe,1-N-phenylnaphthylamine assay,adenosine triphosphate intensity,O-nitrophenyl-β-D-galactopyranoside hydrolysis activity,bicinchoninic acid *** staining,assays for alkaline phosphatase activity,collagen secretion and extracellular matrix mineralization,quantitative real‑time reverse transcription‑polymerase chain reaction,and enzyme-linked immunosorbent assay(ELISA)were used to evaluate the inflammatory response and osteogenic ability in bone marrow stromal cells(MSCs),RAW264.7 cells and their co-culture *** staining,ELISA,micro-CT,hematoxylin and eosin,Masson's trichrome and immunohistochemistry staining were used to evaluate the eradication of MRSA biofilms,inhibition of inflammatory response,and promotion of osseointegration of Ti-PDA@SNP-OGP in ***:Ti-PDA@SNP-OGP displayed a synergistic photothermal and NO-dependent antibacterial effect against MRSA following near-infrared light(NIR)irradiation,and effectively eliminated the formed MRSA biofilms by inducing reactive oxygen species(ROS)-mediated oxidative stress,destroying bacterial membrane integrity and

关键词： Polydopamine nanoparticles Methicillin-resistant Staphylococcus aureus Nitric oxide Osseointegration Osteo-immunomodulation Photothermal effect Titanium implants

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Transcriptomic and bioinformatics analysis of the mechanism by which erythropoietin promotes recovery from traumatic brain injury in mice

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Neural Regeneration Research 2024年第1期19卷 171-179页

作者： Weilin Tan Jun Ma Jiayuanyuan Fu Biying Wu Ziyu Zhu Xuekang Huang Mengran Du Chenrui Wu Ehab Balawi Qiang Zhou Jie Zhang Zhengbu Liao Department of Neurosurgery The First Affiliated Hospital of Chongqing Medical UniversityChongqingChina

Recent studies have found that erythropoietin promotes the recovery of neurological function after traumatic brain ***,the precise mechanism of action remains unclea *** this study,we induced moderate traumatic brain injury in mice by intrape ritoneal injection of erythro poietin for 3 consecutive *** sequencing detected a total of 4065 differentially expressed RNAs,including 1059 mRNAs,92 microRNAs,799 long non-coding RNAs,and 2115circular *** Encyclopedia of Genes and Genomes and Gene Ontology analyses revealed that the coding and non-coding RNAs that were differentially expressed after traumatic brain injury and treatment with erythropoietin play roles in the axon guidance pathway,Wnt pathway,and MAPK *** competing endogenous RNA networks showed that regulatory relationship between the differentially expressed non-coding RNAs and *** the axon guidance pathway was repeatedly enriched,the expression of Wnt5a and Ephb6,key factors in the axonal guidance pathway,was ***6 expression decreased and Wnt5a expression increased after traumatic brain injury,and these effects were reversed by treatment with erythro *** findings suggest that erythro poietin can promote recove ry of nerve function after traumatic brain injury through the axon guidance pathway.

关键词： axon guidance bioinformatics analysis competing endogenous RNA erythropoietin Gene Ontology Kyoto Encyclopedia of Genes and Genomes non-coding RNA RNA sequencing transcriptomics traumatic brain injury

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Multifaceted functions of Drp1 in hypoxia/ischemia- induced mitochondrial quality imbalance: from regulatory mechanism to targeted therapeutic strategy

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Military medical Research 2024年第4期11卷 589-615页

作者： Shuai Hao He Huang Rui-Yan Ma Xue Zeng Chen-Yang Duan Department of Anesthesiology the Second Affiliated Hospital of Chongqing Medical UniversityChongqing 400010China Research Institute of General Surgery Jinling HospitalAffiliated Hospital of Medical SchoolNanjing UniversityNanjing 210002China Department of Cardiovascular Surgery Xinqiao HospitalArmy Medical UniversityChongqing 400037China Institute for Brain Science and Disease Chongqing Medical UniversityChongqing 400010China

Hypoxic-ischemic injury is a common pathological dysfunction in clinical *** are sensitive organelles that are readily damaged following ischemia and ***-related protein 1(Drp1)regulates mitochondrial quality and cellular functions via its oligomeric changes and multiple modifications,which plays a role in mediating the induction of multiple organ damage during hypoxic-ischemic ***,there is active controversy and gaps in knowledge regarding the modification,protein interaction,and functions of Drp1,which both hinder and promote development of Drp1 as a novel therapeutic ***,we summarize recent findings on the oligomeric changes,modification types,and protein interactions of Drp1 in various hypoxic-ischemic diseases,as well as the Drp1-mediated regulation of mitochondrial quality and cell functions following ischemia and ***,potential clinical translation prospects for targeting Drp1 are *** review provides new ideas and targets for proactive interventions on multiple organ damage induced by various hypoxic-ischemic diseases.

关键词： Dynamin-related protein 1(Drp1) Hypoxic-ischemic injury Mitochondrial quality imbalance Cell dysfunction Organ damage

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Paclitaxel-induced Immune Dysfunction and Activation of Transcription Factor AP-1 Facilitate Hepatitis B Virus Replication

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Journal of Clinical and Translational Hepatology 2024年第5期12卷 457-468页

作者： Shi Chen Benhua Li Wei Luo Adeel ur Rehman Miao He Qian Yang Shunyao Wang Jinjun Guo Ling Chen Xiaosong Li Clinical Molecular Medicine Testing Center The First Affiliated HospitalChongqing Medical UniversityChongqingChina affiliated Traditional Chinese Medicine hospital of Southwest medical university LuzhouSichuanChina Laboratory Animal Center of chongqing medical university ChongqingChina Bishan hospital of chongqing Bishan Hospital of Chongqing Medical UniversityChongqingChina The Center of Experimental Teaching Management Chongqing Medical UniversityChongqingChina

Background and Aims:Hepatitis B virus(HBV)reactivation is commonly observed in individuals with chronic HBV infection undergoing antineoplastic drug ***(PTX)treatment has been identified as a potential trigger for HBV *** study aimed to uncover the mechanisms of PTX-induced HBV reactivation in vitro and in vivo,which may inform new strategies for HBV antiviral ***:The impact of PTX on HBV replication was assessed through various methods including enzyme-linked immunosorbent assay,dual-luciferase reporter assay,quantitative real-time PCR,chromatin immunoprecipitation,and immunohistochemical *** sequencing and 16S rRNA sequencing were employed to assess alterations in the transcriptome and microbial diversity in PTX-treated HBV transgenic ***:PTX enhanced the levels of HBV 3.5-kb mRNA,HBV DNA,HBeAg,and HBsAg both in vitro and in *** also promoted the activity of the HBV core promoter and transcription factor *** of AP-1 gene expression markedly suppressed PTX-induced HBV *** sequencing revealed that PTX activated the immune-related signaling networks such as IL-17,NF-􀇉B,and MAPK signaling pathways,with the pivotal common key molecule being *** 16S rRNA sequencing revealed that PTX induced dysbiosis of gut ***:PTX-induced HBV reactivation was likely a synergistic outcome of immune suppression and direct stimulation of HBV replication through the enhancement of HBV core promoter activity mediated by the transcription factor *** findings propose a novel molecular mechanism,underscoring the critical role of AP-1 in PTX-induced HBV reactivation.

关键词： Paclitaxel HBV reactivation Transcription factor AP-1 Immune system Gut microbiota

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Early postoperative complications after transverse colostomy closure,a retrospective study

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World Journal of Gastrointestinal Surgery 2024年第3期16卷 807-815页

作者： Fei Liu Xiao-Juan Luo Zi-Wei Li Xiao-Yu Liu Xu-Rui Liu Quan Lv Xin-Peng Shu Wei Zhang Dong Peng Department of Gastrointestinal Surgery The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China Endoscopy Center The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400012China

BACKGROUND Ostomy is a common surgery usually performed to protect patients from clinical symptoms caused by distal anastomotic leakage after colorectal cancer(CRC)surgery and perforation or to relieve intestinal *** To analyze the complications after transverse colostomy *** Patients who underwent transverse colostomy closure from Jan 2015 to Jan 2022 were retrospectively enrolled in a single clinical *** differences between the complication group and the no complication group were *** regression analyses were conducted to find independent factors for overall complications or incision *** A total of 102 patients who underwent transverse colostomy closure were enrolled in the current ***(68.6%)patients underwent transverse colostomy because of CRC related *** complications occurred in 30(29.4%)patients and the most frequent complication occurring after transverse colostomy closure was incision infection(46.7%).The complication group had longer hospital stays(P<0.01).However,no potential risk factors were identified for overall complications and incision *** The most frequent complication occurring after transverse colostomy closure surgery in our center was incision *** operation time,interval from transverse colostomy to reversal,and method of anastomosis might have no impact on the postoperative *** should pay more attention to aseptic techniques.

关键词： Transverse colostomy closure Surgery Complications A single clinical centre Risk factors

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