Rodent models play a crucial role in research on human periodontal diseases,providing key evidence for investigation into the pathological mechanisms of periodontal bone defects.Relevant research in the field involves gene expression,inflammatory regulation mechanisms,host-microbial interactions,as well as disease resolution and healing processes.Research methodology in the field falls under 2 categories-periodontal inflammation models and surgical defect models.The former simulates periodontal defects by inducing periodontal diseases,while the latter constructs clinically simulated periodontal defects through surgical removal of periodontal tissue.However,the currently available animal models of periodontitis face challenges in simultaneously capturing the disease complexity,tracking dynamic repair processes,and meeting translational needs.Herein,we reviewed and summarized the methods and characteristics of periodontal disease modeling in recent years.We proposed the establishment of a multimodal assessment framework integrating technologies such as spatial transcriptomics,single-cell sequencing,and in vivo fluorescence imaging,which may serve as a critical pathway for overcoming existing research challenges.

Neurodegenerative diseases are a class of nervous system disorders characterized by delayed onset and selective neuronal dysfunction, which are closely associated with aging.Given the challenges associated with early detection and the irreversible nature of the condition, the pursuit of specific biomarkers has emerged as a critical component of disease prevention strategies.Optical coherence tomography angiography (OCTA) generates images which exhibit near-histological resolution without the requirement for contrast agent injection, demonstrating superior sensitivity compared to fundus photography. OCTA has the ability to identify and evaluate neurodegenerative diseases via the quantitative analysis of retinal parameters. The OCTA of the retina and choroid has been verified as a highly sensitive instrument for detecting microvascular abnormalities in both ocular and systemic retinal disorders. This review focuses on the application of OCTA in various neurodegenerative diseases, such as Alzheimer′s disease, Parkinson disease, Huntington′s disease, amyotrophic lateral sclerosis and Wolfram syndrome, with the aim of providing a reference for the early diagnosis and prevention of neurodegenerative diseases.

Neurodegenerative diseases are a class of nervous system disorders characterized by delayed onset and selective neuronal dysfunction, which are closely associated with aging.Given the challenges associated with early detection and the irreversible nature of the condition, the pursuit of specific biomarkers has emerged as a critical component of disease prevention strategies.Optical coherence tomography angiography (OCTA) generates images which exhibit near-histological resolution without the requirement for contrast agent injection, demonstrating superior sensitivity compared to fundus photography. OCTA has the ability to identify and evaluate neurodegenerative diseases via the quantitative analysis of retinal parameters. The OCTA of the retina and choroid has been verified as a highly sensitive instrument for detecting microvascular abnormalities in both ocular and systemic retinal disorders. This review focuses on the application of OCTA in various neurodegenerative diseases, such as Alzheimer′s disease, Parkinson disease, Huntington′s disease, amyotrophic lateral sclerosis and Wolfram syndrome, with the aim of providing a reference for the early diagnosis and prevention of neurodegenerative diseases.

infC gene encodes the translation initiation factor IF3 in bovine Pasteuella multocida,but it whether or not regulation to the virulence and cross-protection in P.multocida is still not well understood.In this study,the infC gene mutant(△infC)derived from bovine P.multocida type A strain CQ2 was constructed using by homologous recombination method.Compared with wild strain,the △infC showed significant increasing in biofilm formation,but the capsule produc-tion,virulence and bacterial loading in organs were significant decreased,and the IL-1β secretion of mouse peritoneal macrophage increased.Along with the infC gene deletion,the expression of genes related to capsule synthesis and LPS synthesis and transport were significantly down-regulated,while that of genes related to biofilm synthesis and outer membrane protein were significantly up-regulated.The inactivated vaccines of wild type and mutant were prepared and mice were immu-nized twice then challenged with wild type strains,respectively.The immuno-protection rate of△in fC inactivated vaccine against bovine P.multocida type A,B and F were 100.0％,83.3％and 0.0％,respectively,and the immuno-protection rate that against rabbit type P.multocida was 33.3％.The results indicated that infC gene could affect the virulence of P.multocida by regula-ting the production of capsule and the expressions of virulence related factors,and the deletion of infC gene conferred a certain cross-protection property of strains.This study provided a certain foundation for the development of P.multocida vaccine.

Ferroptosis is a way of cell death with lipid peroxides as the core.Cells can reduce ferroptosis sensitivity by relying on glutathione peroxidase 4(GPX4)/glutathione(GSH)antioxidant systems.Triple-negative breast cancer(TNBC)cells are more dependent on the intracellular antioxidant mechanism than normal cells,thus induction of ferroptosis based on the GPX4/GSH system has shown bright anti-TNBC prospects.This paper reviews the recent research on TNBC treatment with ferroptosis in the background of GPX4/GSH,in order to provide references for the clinical treatment of TNBC.

ObjectiveTo observe the clinical efficacy of modified Yigongsan combined with multi-enzyme tablets and bifidobacterium triple live powder on infantile anorexia with spleen-stomach Qi deficiency syndrome. MethodA total of 112 infantile patients anorexia with spleen-stomach Qi deficiency syndrome treated at Hebei Provincial Hospital of Traditional Chinese Medicine from January 2022 to June 2023 were enrolled and divided into a control group and an observation group， with 56 cases in each group， according to a random number table. Children in the control group were treated with multi-enzyme tablets and Bifidobacterium triple live powder， while those in the observation group were treated with modified Yigongsan in addition to the treatment in the control group. During the study， one case dropped out in the control group and two cases dropped out in the observation group. The clinical efficacy of the two groups of children was compared， including changes in traditional Chinese medicine （TCM） syndrome scores （main symptoms， secondary symptoms， tongue， and pulse）， time to restore normal food intake， and increase in body weight. Changes in calcium， iron， zinc levels， hemoglobin， and albumin levels before and after treatment， as well as changes in gastrointestinal hormones such as gastrin and motilin， vasoactive intestinal peptide， somatostatin， neuropeptide Y， orexin， and leptin， were observed. The occurrence of adverse reactions in the two groups of children during the study was also recorded. ResultThe total effective rate of children in the control group after treatment was 85.19% （46/54）， while that in the observation group was 98.15% （53/54） （χ² =5.939， P<0.05）. Compared with the control group， the time for food intake to return to normal in the observation group was shorter， and the increase in body weight was greater （P<0.05）. Compared with the results before treatment， the TCM syndrome scores （main symptoms， secondary symptoms， tongue， and pulse） in both groups of children significantly decreased， while the levels of calcium， iron， zinc， hemoglobin， albumin， gastrin， motilin， neuropeptide Y， and orexin increased， and the levels of vasoactive intestinal peptide， somatostatin， and leptin decreased （P< 0.01）. Compared with the control group after treatment， the improvement in the above indicators in the observation group was more significant （P<0.01）. The incidence of adverse reactions in the two groups of children during the treatment period was similar， and the difference was not statistically significant. ConclusionModified Yigongsan combined with multi-enzyme tablets and Bifidobacterium triple live powder is highly effective in treating infantile anorexia （spleen-stomach Qi deficiency syndrome）. After treatment， symptoms of the children were improved，appetite and food intake increased， gastrointestinal function was improved， body weight increased， and adverse reactions were few， indicating that the treatment was safe and reliable.

Objective To explore the effect of miR-1-3p on the malignant biological behavior of human esophageal squamous cell carcinoma cells and the potential mechanisms.Methods The Gene Expression Omnibus(GEO)database was analyzed to screen differentially expressed miRNAs in esophageal squamous cell carcinoma(ESCC).qRT-PCR was used to detect the expression of miR-1-3p in human ESCC cell lines(KYSE30,KYSE150,KYSE410,KYSE510,and Eca109)and normal esophageal epithelial cell line HET-1A.CCK-8,wound healing,Transwell assays,and flow cytometry were applied to detect the effect of miR-1-3p on the proliferation,migration,invasion,and apoptosis of ESCC cells.Bioinformatics tool was used to predict the target genes of miR-1-3p.A Kaplan-Meier survival curve was drawn to analyze the correlation between STC2 expression and overall survival of patients in the ESCC cohort of the TCGA database.Fluorescence in situ hybridization was performed to verify the subcellular location of miR-1-3p in ESCC cells,and dual-luciferase reporter gene assay was performed to validate the regulation of miR-1-3p on stanniocalcin 2(STC2).RNA immunoprecipitation assays were used to detect the binding of miR-1-3p and STC2.Western blot assay was performed to determine the effect of miR-1-3p on the expression of STC2 and endoplasmic reticulum stress pathway-related proteins,including p-PERK,p-eIF2α,and ATF4.CCK-8,wound healing,Transwell assays,and flow cytometry were applied to detect the effect of STC2 overexpression and knockdown on the proliferation,migration,invasion,and apoptosis of ESCC cells.Results The expression of miR-1-3p was lower in ESCC cell lines than in HET-1A cells(all P<0.05).The transfection of miR-1-3p mimic decreased the proliferation,invasion,and migration of ESCC cells(all P<0.05)and promoted the apoptosis of ESCC cells(all P<0.001).Bioinformatics tool showed that STC2 was a target gene of miR-1-3p.The expression of STC2 in ESCC tissues was higher than that in normal esophageal epithelial tissues in the ESCC cohort of TCGA database and was negatively correlated with prognosis(all P<0.05).miR-1-3p was located in the cytoplasm and can directly bind to STC2 mRNA.The transfection of miR-1-3p mimic downregulated the expression of STC2,p-PERK,p-eIF2α,and ATF4(all P<0.05).The overexpression of STC2 promoted the proliferation,invasion,and migration(all P<0.05)and inhibited the apoptosis of ESCC cells(all P<0.05).Knockdown of STC2 inhibited the proliferation,invasion,and migration(all P<0.05)and promoted the apoptosis of ESCC cells(all P<0.05).Conclusion miR-1-3p inhibits the malignant biological behavior and promotes the apoptosis of esophageal squamous cell carcinoma cells by regulating STC2 possibly by suppressing the endoplasmic reticulum stress.

Objective To observe the value of radiomics models based on gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid(Gd-EOB-DTPA)enhanced hepatobiliary phase(HBP)MRI for assessing clinical pathological stage of hepatic fibrosis(HF).Methods Data of 240 patients with pathologically/clinically diagnosed and clinical pathological staged HF who underwent Gd-EOB-DTPA enhanced MR examination were retrospectively analyzed.The liver-to-muscle signal intensity ratio(SIR1)and liver-to-spleen signal intensity ratio(SIR2)were measured based on HBP images.Radiomics features of HBP images were extracted and screened to construct radiomics models.The signal intensity ratio(SIR)-radiomics combined models were constructed based on SIR and radiomics signatures.Receiver operating characteristic(ROC)curves were drawn to evaluate the efficacy of each model for assessing clinical pathological stage of HF.Results The area under the curve(AUC)of SIR1 and SIR2 models for assessing clinical pathological stage of HF were 0.63-0.70 and 0.65-0.71,respectively.The most effective radiomics model for assessing HF,significant HF,advanced HF and early cirrhosis was support vector machine(SVM),SVM,light gradient boosting machine and K-nearest neighbor model,respectively,with the AUC in validation set of 0.87,0.82,0.81 and 0.80,respectively,while the AUC of SIR-radiomics combined models in validation set of 0.88,0.82,0.82 and 0.81,respectively.Conclusion The radiomics models based on Gd-EOB-DTPA enhanced HBP MRI were helpful for assessing clinical pathological stage of HF.Combining with HBP SIR could improve their efficacy.

The detection rate of cerebral small vessel disease (CSVD) is constantly increasing, and identifying early CSVD lesions is of great significance for its prevention and treatment. Based on the similarities in physiological characteristics and embryonic origin between the retina and the central nervous system, optical coherence tomography angiography can quickly and non-invasively evaluate brain microcirculation through deep analysis of retinal blood vessels. This article reviews the application of this technology in CSVD and vascular cognitive impairment, aiming to provide reference for the early diagnosis and prevention of CSVD.

Objective:To analyze the patterns of dynamic functional connectivity(dFC) at rest in different obsessive-compulsive disorder(OCD) subtypes based on gray matter volume, and explore the relationship between abnormal gray matter volume and dFC patterns and clinical symptoms in different OCD subtypes.Methods:Clinical data were prospectively collected from a total of 48 patients with OCD from inpatient and outpatient departments of the Fourth Affiliated Hospital of Qiqihar Medical College(20 cases) and Qiqihar Mental Health Center(28 cases) from September 2013 to March 2020. There were 33 males and 15 females, aged 18 to 42(27.1±6.7) years. During the same period, 39 age-matched healthy controls were also recruited, including 31 males and 8 females, aged 18 to 43(28.5±8.6) years. Structural and resting-state functional magnetic resonance imaging scans were performed on 48 OCD patients(OCD group) who met the ICD-10 diagnostic criteria and 39 healthy controls(control group). Using voxel-based morphometry(VBM) and semi-supervised machine learning methods, the patient group was characterized by gray matter volume to perform subtype analysis, and brain regions with abnormal gray matter volume were selected as regions of interest for whole-brain voxel-wise dFC analysis. Correlations between abnormal gray matter volume and dFC and clinical symptoms in OCD patients were analyzed.Results:Based on gray matter volume, OCD patients were computed into two subtypes, of which subtype 1 increased gray matter volume in the right central posterior gyrus(809 voxels; t=4.31; GRF corrected voxel P<0.001, cluster P<0.05 two-tailed), and subtype 2 showed reduced gray matter volume in the left superior temporal gyrus(1 118 voxels; t=-4.37; GRF corrected voxel P<0.001, cluster P<0.05 two-tailed). In subtype 1, the dFC between the right central posterior gyrus and left medial superior frontal gyrus was significantly reduced(187 voxels; t=-4.42; GRF corrected voxel P<0.001, cluster P<0.05 two-tailed); in subtype 2, dFC between the left superior temporal gyrus and left hippocampus, and left central opercular cortex was significantly reduced(272 voxels、99 voxels; t=-4.69, -5.01; GRF corrected voxel P<0.001, cluster P<0.05 two-tailed). In subtype 1, dFC between the right central posterior gyrus and left medial superior frontal gyrus was negatively correlated with illness duration( r=-0.579; P=0.002, uncorrected). In subtype 2, dFC between the left superior temporal gyrus and left hippocampus was positively correlated with illness duration( r=0.578; P=0.003, uncorrected). Conclusions:In the resting state, patients with different subtypes of OCD may have different patterns of dFC abnormalities based on gray matter volume.