Skeletal class Ⅱ malocclusion is characterized by maxillary protrusion,mandibular retrognathia,or a combination of both,and often accompanied by vertical dimensional discrepancies;treatment is complex,and combined orthodontic-orthognathic surgery is needed for the adult patients.Clear aligner therapy has gradually been applied in complex orthodontic cases.However,limited cases have been reported domestically and internationally regarding the application of clear aligner therapy combined with orthognathic surgery.This article presented a case of a patient with skeletal class Ⅱ high-angle malocclusion treated with the combined therapy and analyzed the clinical efficacy of the treatment appraoch to provide reference for the clinical practice.Extraction of impacted wisdom teeth 18,28,38,and 48,as well as orthodontic teeth 15,25,34,and 44,was performed in stages before orthodontic treatment.Clear aligner therapy was used for preoperative orthodontics.In sagittal plane,a super-complete class Ⅱ canine and molar relationship and a 13-14 mm overjet of the anterior teeth were established.The maxillary and mandibular arch morphology was matched horizontally.The orthognathic surgery included maxillary LeFort Ⅰ osteotomy,bilateral sagittal split ramus osteotomy(BSSRO)and chinplasty.Fine occlusal adjustment was conducted after operation.After treatment,the skeletal relationship between upper and lower jaw was corrected to normal;subspinale-nasion-supramental angle(ANB)was improved from 12.3° to 4.7°;the patient established the class Ⅰ canine and molar relationship,with normal overjet and overbite;root parallelism was good and there was no obvious root resorption;the facial soft tissue profile was significantly improved,and nasion-subnasale-pogonion angle(N-Sn-Pg)was improved from 143.9° to 162.8°.The curative effect was stable 1 year after operation.Clear aligner therapy can efficiently complete combined orthodontic and orthodontic surgery in the complex cases.Compared with the fixed appliance,it is more beneficial to the patients'need for beauty and the maintenance of periodontal health.

The patients with skeletal Class Ⅱ high-angle malocclusion are frequently complicated by idiopathic condylar resorption(ICR),which may lead to temporomandibular joint(TMJ)dysfunction and dentofacial deformities.This article reports the diagnosis and treatment process of a 24-year-old female patient with skeletal Class Ⅱ high-angle malocclusion accompanied by ICR.The patient's chief complaints were anterior open bite and TMJ pain,and was diagnosed with ICR through clinical examination and imaging.After stabilizing condylar resorption with occlusal splint therapy,combined orthodontic-orthognathic treatment was performed.The 42-month follow-up revealed:well-aligned dentition with complete closure of diastemas,significant improvement of protrusive facial profile(ANB angle reduced by 4.2°),complete resolution of TMJ pain and clicking,and establishment of stable Class Ⅰ occlusion.Three-dimensional CT demonstrated satisfactory condylar bone remodeling and normalized joint space.Through multidisciplinary treatment,both occlusal function and facial aesthetics were significantly improved.This case demonstrates that orthodontic-orthognathic treatment should be performed after condylar stabilization in ICR patients,and occlusal splint therapy serves as an effective preoperative intervention.

Objective To identify long non-coding RNA (lncRNA) associated with rheumatoid arthritis-associated interstitial lung disease (RA-ILD) and investigate their mechanisms. Methods Peripheral blood samples were collected from RA-ILD patients (n＝3), RA patients without lung involvement (n＝3), and healthy controls (n＝3). Next-generation sequencing was performed to screen differentially expressed lncRNA. A human fibrotic lung cell model was established by inducing the MRC-5 cell line with transforming growth factor-β (TGF-β). Following siRNA-mediated knockdown of target genes, changes in inflammatory and oxidative stress-related genes were analyzed via real-time quantitative reverse transcription polymerase chain reaction (qRT-PCR). Western blotting and dual-luciferase reporter (DLR) assays were used to validate protein expression, ubiquitination levels, and nuclear translocation of oxidative stress regulators, and antioxidant response element (ARE) transcriptional activity. Rescue experiments were conducted to confirm the role of target lncRNA in oxidative stress and inflammation in fibrotic lung cells. Results High-throughput sequencing revealed significant downregulation of LINC00638 in RA-ILD patients. Knockdown of LINC00638 markedly reduced transcriptional levels of interleukin (IL)-4, nuclear factor erythroid-2-related factor 2 (Nrf2), heme oxygenase-1 (HO-1), and superoxide dismutase 2 (SOD2), while increasing IL-6, IL-1β, interferon-γ (IFN-γ), and reactive oxygen species (ROS) levels. Furthermore, LINC00638 knockdown decreased Nrf2 protein expression, increased its ubiquitination, reduced nuclear translocation, and suppressed ARE transcriptional activity. In MRC-5 cells, LINC00638 knockdown combined with N-acetylcysteine treatment restored Nrf2 and HO-1 levels while reducing IL-6 expression. Conclusions LINC00638 suppresses inflammatory responses in RA-ILD by activating the Nrf2/ARE antioxidant signaling pathway, suggesting its potential as a therapeutic target for diagnosis and treatment.

ObjectiveBased on transcriptomics， to explore the mechanism of Hei Xiaoyaosan regulating the phosphatidylinositol 3-kinase/protein kinase B （PI3K/Akt） signaling pathway to improve the learning and memory ability of insomnia rats with liver depression syndrome. MethodsSixty 8-week-old male SD rats were randomly divided into the blank group， model group， eszopiclone group （0.09 mg·kg^-1）， and low， medium， and high dose groups of Hei Xiaoyaosan （3.82， 7.65， 15.30 g·kg^-1）， with ten rats in each group. Except for the blank group， the other groups were induced insomnia rat model with liver depression by chronic restraint， tail clamping stimulation and intraperitoneal injection of p-chlorophenylalanine （PCPA）. Each treatment group received intragastric administration according to the specified dosage， once a day for 14 consecutive days. The pentobarbital sodium cooperative sleep test， open field test， and Morris water maze test were used to test the sleep quality， depressive-like behavior， and learning and memory abilities of rats. Additionally， enzyme-linked immunosorbent assay （ELISA） was used to detect the contents of 5-hydroxytryptamine （5-HT）， γ-aminobutyric acid （GABA）， brain-derived neurotrophic factor （BDNF）， glial cell line-derived neurotrophic factor （GDNF） and nitric oxide （NO） in hippocampus. Hematoxylin-eosin （HE） staining was performed to observe pathological changes of the hippocampal tissue， while terminal deoxynucleotidyl transferase deoxyuridine triphosphate （dUTP） nick end labeling （TUNEL） was used to evaluate apoptosis of hippocampal neurons. Transcriptomic sequencing technology was employed to identify differentially expressed genes in hippocampus between the model group and the blank group， as well as between the medium-dose group of Hei Xiaoyaosan and the model group. Gene Ontology （GO） and Kyoto Encyclopedia of Genes and Genomes （KEGG） enrichment analysis were performed on the intersecting genes. Subsequently， the enriched key genes and signaling pathways were analyzed and verified. Real-time fluorescence quantitative polymerase chain reaction （Real-time PCR） was utilized to assess the mRNA expression levels of phosphatase and tensin homolog （PTEN）， B-cell lymphoma-2 （Bcl-2）-like protein 11 （BCL2L11）， and mitogen-activated protein kinase 1 （MAPK1） in hippocampus， and Western blot was employed to evaluate the protein expressions of PI3K， phosphorylation （p）-PI3K， Akt， p-Akt， Bcl-2， Bcl-2-associated X protein （Bax）， and cleaved Caspase-3 in the same tissue. ResultsCompared with the blank group， the model group exhibited a reduction in body weight， an increase in sleep latency， and a decrease in sleep duration （P<0.01）. Additionally， rats showed obvious depression-like behavior， and their learning and memory abilities decreased. Furthermore， the contents of 5-HT， GABA， NO， BDNF and GDNF in hippocampus decreased （P<0.01）. Histological examination revealed a disorganized cell arrangement in the CA1 region of the hippocampus， characterized by irregular cell shapes， a reduced cell count， deeply stained and pyknotic nuclei， increased vacuolar degeneration， and an elevated apoptosis rate （P<0.01）. Compared with the model group， the body weight of the high and medium dose groups of Hei Xiaoyaosan increased， the sleep latency shortened and the sleep time prolonged （P<0.05， P<0.01）. Additionally， depression-like behavior and learning and memory abilities of rats were significantly improved， the levels of 5-HT， GABA， NO， BDNF and GDNF in the hippocampus increased （P<0.05， P<0.01）. These interventions also ameliorated pathological damage in the hippocampal CA1 area and reduced the apoptosis of hippocampal neurons （P<0.01）. Transcriptomic sequencing results indicated that Hei Xiaoyaosan might exert a therapeutic effect by regulating PI3K/Akt pathway through key mRNAs such as PTEN， BCL2L11， and MAPK1. The roles of these key mRNAs and proteins within PI3K/Akt pathway were further validated. In comparison to the blank group， the expression levels of PTEN， BCL2L11 and MAPK1 mRNA in the hippocampus of rats in the model group were increased （P<0.01）， while the protein expression levels of p-PI3K， p-Akt and Bcl-2 were decreased （P<0.01）， and the protein expression levels of PTEN， Bax and cleaved Caspase-3 were increased （P<0.01）. Compared with the model group， the high-dose and medium-dose groups of Hei Xiaoyaosan could down-regulate the expressions of PTEN， BCL2L11 and MAPK1 mRNAs （P<0.01）， up-regulate the expressions of p-PI3K， p-Akt and Bcl-2 proteins （P<0.01）， and down-regulate the protein expressions of PTEN， Bax and cleaved Caspase-3 （P<0.05， P<0.01）. ConclusionHei Xiaoyaosan may regulate PI3K/Akt signaling pathway by down-regulating expressions of key genes such as PTEN， BCL2L11 and MAPK1， and thus improve the learning and memory abilities of insomnia rats with liver depression syndrome.

OBJECTIVE To explore the effect of fluconazole on proteomics of Trichosporon asahii so as to reveal the responding process of T.asahii to fluconazole stress and the resistance mechanisms to azoles on the protein level.METHODS T.asahii AS 2.2174 was chosen as the research subject,the minimum inhibitory concentration(MIC)of fluconazole was determined by broth microdilution assay.The protein abundance of T.asahii was detec-ted by means of tandem mass tag(TMT)technique combined with liquid chromatography-tandem mass spectrom-etry(LC-MS/MS)before and after the treatment with fluconazole(1× MIC).The differentially expressed pro-teins(DEPs)were identified based on the screening standards of fold change ≥1.20 or ≤0.83 and P＜0.05.Gene ontlogy(GO)and Kyoto encyclopedia of genes and genomes(KEGG)enrichment analysis were performed for the DEPs so as to understand the biological property of the DEPs and the major biological pathways that the DEPs in-volved in.Finally,the targeted validation was carried out for the targeted differentially expressed proteins by using multiple reaction monitoring(MRM).RESULTS The MIC of fluconazole to T.asahii AS 2.2174 was 8 μg/ml.Totally 196 DEPs were identified,including 93 upregulated DEPs and 103 downregulated DEPs.The function en-richment analysis showed that the DEPs mainly participated in synthesis and metabolism of sterols,drug metabo-lism,stress response,energy metabolism and intertranslation.The targeted DEPs showed the consistent expres-sion trends in MRM target validation and TMT-LC-MS/MS.CONCLUSIONS The protein abundance of T.asahii has remarkable change under the fluconazole stress.The bioinformatics analysis reveals the complicated molecular mechanisms of T.asahii in response to the fluconazole stress,which may offer valuable ideas for understanding the drug resistance to azoles and developing new drug targets.

Objective This study aims to construct and evaluate a clinical decision support system for individualized frequency repositioning in ICU patients using big data and modern information technology,with the goal of improving ICU nursing quality.Methods From February to August 2023,a dedicated research team was established to construct a data model based on real-world data from 3,988 ICU patients,assessing the impact of different position change frequencies on the incidence of pressure injuries.Based on this model,a decision support system was designed and developed,incorporating modules for personalized patient characteristics input,data analysis and result queries,decision recording,and patient file management.From September to November 2023,ICU nurses at a tertiary hospital in Qingdao city was selected to use the system.A usability survey was conducted using the System Usability Scale(SUS)to evaluate the system's usability.Results The constructed decision support system can display the outcomes for patients under 7 different position change frequencies based on the input of personalized patient characteristics and the calculation results from the data model,providing precise decision support for nurses.A total of 85 nurses participated in the system usability evaluation,with the SUS score of 64.22±13.9.Conclusion The constructed individualized frequency of repositioning decision support system for ICU patients demonstrates good scientific validity and usability,providing clinical nurses with a valuable reference for implementing personalized position change frequencies for patients.

Objective:To investigate the safety and efficacy of a modified radiofrequency ablation（RFA）treatment method for primary great saphenous vein varicose.Methods:Clinical data of 90 patients with primary great saphenous vein varicose treated with ultrasound-guided RFA from January 2021 to April 2024 in the Ultrasound Department of the First Affiliated Hospital of Zhengzhou University were retrospectively analyzed. Among them，45 patients were treated with traditional RFA treatment method（traditional group）and 45 patients were treated with improved RFA treatment method（improved group）. Number of punctures，operation time，foam hardener dosage，intraoperative and postoperative complications were recorded in the two groups. The preoperative and postoperative venous clinical severity score（VCSS）and chronic venous insufficiency questionnaire（CIVIQ-14）were compared. The closure rate and recurrence rate of great saphenous vein varicose were followed up and the efficacy of the two methods were analyzed.Results:The success rate of the improved group and the traditional group was 100%.The number of punctures in the improved group was less than those of the traditional group［1（1，1） vs. 2（2，3）， Z = -7.431， P<0.001］，and the operation time of the modified group was shorter than that of the traditional group［（15.89 ± 3.63）min vs.（30.91 ± 5.58）min， t=-15.145， P<0.001］，the average volume of lauryl foam was lower than that of the traditional RFA group［（7.96 ± 2.36）ml vs.（15.69 ± 2.89）ml， t=-13.892， P<0.001］. The incidence of complications was similar between the two groups，with no statistical significance（all P>0.05）. Postoperative VCSS and CIVIQ-14 scores were significantly improved compared with before（all P<0.001），with no statistical significance between the two groups（all P>0.05）. At 12 months after the operation，there was no significant difference in the closure rate of the saphenous vein between the improved group and the traditional group（ P>0.05），and the recurrence rate of varicose veins in both groups was 0. Conclusions:This modified RFA treatment method for the treatment of lower extremity varicose veins is minimally invasive，safe，and has the same efficacy as the traditional RFA treatment method. Compared with the traditional RFA treatment method，the modified RFA treatment method has the advantages of convenient operation，less puncture times and shorter operation time，and is worthy of clinical promotion.

OBJECTIVES: To investigate the correlation of PRELID1 with gastric cancer (GC) progression, prognosis, and epithelial-mesenchymal transition (EMT) and the underlying mechanisms. METHODS: We analyzed the data of 115 patients undergoing radical gastrectomy for GC in our hospital between February, 2018 and March, 2023 to explore the correlation of PRELID1 expression level in GC tissues with tumor progression and patient prognosis. In cultured GC cells, the effects of lentivirus-mediated overexpression or interference of PRELID1 were observed on cell migration, invasion and EMT. RESULTS: Immunohistochemical staining revealed significantly higher PRELID1 expression in GC tissues (P<0.001), whose expression level was positively correlated with CEA ≥5 ng/mL (P=0.007), CA199 ≥37 U/mL (P=0.007), G_3-4 stages (P=0.001), T_3-4 stages (P=0.001), and N_2-3 stages (P=0.020). Univariate and Cox multifactorial analysis showed that high PRELID1 level was an independent risk factor affecting 5-year survival of GC patients (P=0.001). In cultured GC cells, PRELID1 overexpression obviously promoted cell proliferation, migration, invasion, and the expressions of MMP2 and MMP9, and interference of PRELID1 produced the opposite changes. PRELID1 overexpression also increased the expressions of N-cadherin and vimentin and reduced the expression of E-cadherin. Mechanistic analyses showed that up-regulation of PRELID1 increased the expression of p-PI3K, p-AKT, and p-mTOR in GC cells, whereas its interference caused the opposite changes; the application of 740 Y-P, a PI3K/AKT pathway activator, significantly enhanced the migration, invasion, and EMT of GC cells with PRELID1 knockdown. CONCLUSIONS PRELID1 is highly expressed in GC and affects prognosis of the patients, and its high expression promotes migration, invasion and epithelial mesenchymal transition of GC cells possibly by activating the PI3K/AKT/mTOR pathway.
Humans ; Stomach Neoplasms/metabolism* ; Epithelial-Mesenchymal Transition ; Prognosis ; Cell Movement ; Cell Line, Tumor ; Male ; Female ; Middle Aged ; Signal Transduction ; Neoplasm Invasiveness ; Phosphatidylinositol 3-Kinases/metabolism* ; Proto-Oncogene Proteins c-akt/metabolism*

Corynebacterium pseudotuberculosis(C.pseudotuberculosis)is a group of intracellular Gram-positive bacteria that can cause zoonotic diseases.This study investigated the mechanisms of inflammatory mediator secretion and the phagocytic and bactericidal functions of mouse peritoneal macrophages following C.pseudotuberculosis infection.Initially,transcriptomic sequencing was em-ployed to identify genes critical for C.pseudotuberculosis infection in macrophages.Subsequently,gene knockout mice were utilized to assess the impact of these key genes on inflammatory media-tor secretion,activation of inflammatory signaling pathways,and the phagocytic and bactericidal functions of macrophages infected with C.pseudotuberculosis.Techniques such as ELISA,Western blot,and immunofluorescence were employed in this analysis.Further,transcriptomic sequencing was conducted to identify key downstream genes.Following C.pseudotuberculosis infection,GO enrichment analysis was performed,and TLR2 was identified as the focal point of the study.Perito-neal macrophages from C57BL/6J and TLR2 knockout(TLR2-/-)mice were infected with C.pseudotuberculosis.ELISA results revealed that the levels of TNF-α,IL-1β,and IL-10 were signifi-cantly downregulated in TLR2-/-macrophages compared to C57BL/6J macrophages post-infec-tion.Western blot demonstrated that the absence of TLR2 led to a marked decrease in M APK(p38 and ERK)signaling pathway phosphorylation following C.pseudotuberculosis infection.Immuno-fluorescence results indicated that the phagocytic rate of TLR2-/-macrophages was significantly higher than that of C57BL/6J macrophages after infection.Subsequently,transcriptomic analysis of C57BL/6J and TLR2-/-macrophages infected with C.pseudotuberculosis was performed,followed by GO enrichment analysis of differential genes.IL-36a,Cx3cr1,TLR1,and TLR2 were identified as key differential genes.TLR2 plays a crucial role in the inflammatory response induced by C.pseudotuberculosis infection in mice,influencing the progression of the inflammatory response and host outcomes through the secretion of inflammatory mediators,activation of signaling pathways,and modulation of phagocytic and bactericidal functions.IL-36a and Cx3cr1 were identified as key downstream factors in this process.

Objective:To gain an in-depth understanding of the career development of male nurses in China, analyze trends, challenges, and opportunities, and provide a basis for policy-making, talent cultivation, and professional development in the nursing field.Methods:A descriptive qualitative research method was adopted. From March 29th to July 30th, 2023, the heads of the male nurses working groups of nursing associations in 26 regions of China were selected by purposive sampling method for semi-structured interviews. Content analysis was used to analyze the data.Results:The current situation of the career development of male nurses in China could be summarized into the following three themes. (1) Current situation: the organizational structure of provincial-level male nurses work was basically complete, but there were obvious differences at the grassroots level; the work was carried out in various forms, and diverse models developed in coordination; (2) Trends: there were obvious stratifications in professional ideology and professional abilities of male nurses among different regions and different-level medical institutions; the gender dividend was gradually decreasing, and male nurses should give play to their advantages in logical thinking ability; (3) Prospects: early intervention was needed to enhance professional identity and organizational support; male nurses should be trained in various aspects through multiple forms such as counterpart assistance, expert databases or online academic forums; interdisciplinary development might be the key to stimulating internal driving force.Conclusions:Significant progress has been made in the career development of male nurses in China, but there are still challenges and issues to address. Further improvements in related policies, enhancement of social recognition and professional status, and increased investment and support in research and education are needed to promote the sustained development of male nursing careers.