Objective To analyze the effect of different lateral occlusion patterns on the stress distribution of All-on-4 implanted fixed dentures.Methods A model of All-on-4 implant fixed denture was established,and lateral balanced occlusion,group functional oc-clusion,and canine protection occlusion was simulated by changing the loading method.The selected loading force was 200 N vertically and 30 N horizontally.Results The maximum stress values of each part of the simulated balanced occlusion model were the smallest,while the maximum stress values of each part of the canine protection model were the largest.The maximum stress values of each part of the group functional occlusion model were slightly larger than those of the balanced occlusion model,but significantly smaller than those of the canine protection model.Conclusion Group function occlusion could be selected for the lateral occlusion in the final restoration of All-on-4 implant prosthesis.

Background and purpose:In recent years,deep inspiration breath hold(DIBH)based on surface-guided radiation therapy(SGRT)has emerged as one of the most promising techniques in breast cancer radiotherapy.Conventionally,cone-beam CT(CBCT)is used before treatment to verify and correct patient positioning deviations.However,patient position may change during treatment,and pre-fraction CBCT cannot fully reflect real-time positional deviations.Therefore,this study aimed to introduce intra-fraction CBCT into left-sided breast DIBH radiotherapy to monitor and correct real-time deviations,verify whether patients achieve the desired position during treatment,and evaluate the clinical value of intra-fraction CBCT in left-breast radiotherapy.Methods:Clinical data from postoperative left-sided breast cancer patients treated at Fudan University Shanghai Cancer Center between June 2023 and January 2024 were collected.Patients with satisfactory cardiopulmonary function and stable DIBH compliance were included.Pre-fraction CBCT scans were performed before treatment,and data were recorded.During treatment,the gantry was rotated to-180° to trigger kV-level intra-fraction CBCT scanning.After gantry repositioning to the starting angle of the tangential field,MV beam delivery commenced.Intra-fraction CBCT scans were acquired for positional registration,and deviations were compared with pre-fraction CBCT results.Results:A total of 30 eligible patients were included,with 150 pairs of pre-fraction and intra-fraction CBCT images analyzed per patient.The mean registration deviations for intra-fraction CBCT were 26%,52%,and 51%lower than pre-fraction CBCT in the X,Y,and Z axes,respectively(P＜0.05),demonstrating significantly reduced real-time deviations.The probability of intra-fraction deviations being＜6 mm was 100.0%,100.0%,and 99.3%for the X,Y,and Z axes,respectively.Correlation analysis revealed a weak correlation between intra-fraction and pre-fraction deviations in the X-axis(P＜0.05),while no significant correlation was observed for the Y and Z axes(P＞0.05).Conclusion:Intra-fraction CBCT effectively monitors and corrects real-time positional deviations in left-sided breast DIBH radiotherapy,serving as a valuable supplement to conventional pre-fraction CBCT.It minimally impacts treatment efficiency while significantly improving positional accuracy,offering clinical and practical benefits for left-breast cancer radiotherapy.

Objective To evaluate the added value of ciprofol and to provide the reference for clinical selection of ciprofol and propofol in patient individualized anesthesia and sedation program.Methods The relative safety,relative effectiveness,innovation/suitability,and economy of propofol and ciprofol were compared and scored according to the Guidelines for Drug Added Value Evaluation based on Health Technology Evaluation.Results Compared with the value of propofol,the total value of ciprofol was 57 points,which was reflected as a small increase.The sedation effect of the two drugs was similar,but propofol had more economic cost advantages,and ciprofol was better than propofol in injection pain,hypotension,and other adverse reactions.Conclusion Propofol and ciprofol should be used reasonably in anesthesia and sedation,considering the health status and economic condition of patients.

Objective To analyze the effect of different lateral occlusion patterns on the stress distribution of All-on-4 implanted fixed dentures.Methods A model of All-on-4 implant fixed denture was established,and lateral balanced occlusion,group functional oc-clusion,and canine protection occlusion was simulated by changing the loading method.The selected loading force was 200 N vertically and 30 N horizontally.Results The maximum stress values of each part of the simulated balanced occlusion model were the smallest,while the maximum stress values of each part of the canine protection model were the largest.The maximum stress values of each part of the group functional occlusion model were slightly larger than those of the balanced occlusion model,but significantly smaller than those of the canine protection model.Conclusion Group function occlusion could be selected for the lateral occlusion in the final restoration of All-on-4 implant prosthesis.

Background and purpose:In recent years,deep inspiration breath hold(DIBH)based on surface-guided radiation therapy(SGRT)has emerged as one of the most promising techniques in breast cancer radiotherapy.Conventionally,cone-beam CT(CBCT)is used before treatment to verify and correct patient positioning deviations.However,patient position may change during treatment,and pre-fraction CBCT cannot fully reflect real-time positional deviations.Therefore,this study aimed to introduce intra-fraction CBCT into left-sided breast DIBH radiotherapy to monitor and correct real-time deviations,verify whether patients achieve the desired position during treatment,and evaluate the clinical value of intra-fraction CBCT in left-breast radiotherapy.Methods:Clinical data from postoperative left-sided breast cancer patients treated at Fudan University Shanghai Cancer Center between June 2023 and January 2024 were collected.Patients with satisfactory cardiopulmonary function and stable DIBH compliance were included.Pre-fraction CBCT scans were performed before treatment,and data were recorded.During treatment,the gantry was rotated to-180° to trigger kV-level intra-fraction CBCT scanning.After gantry repositioning to the starting angle of the tangential field,MV beam delivery commenced.Intra-fraction CBCT scans were acquired for positional registration,and deviations were compared with pre-fraction CBCT results.Results:A total of 30 eligible patients were included,with 150 pairs of pre-fraction and intra-fraction CBCT images analyzed per patient.The mean registration deviations for intra-fraction CBCT were 26%,52%,and 51%lower than pre-fraction CBCT in the X,Y,and Z axes,respectively(P＜0.05),demonstrating significantly reduced real-time deviations.The probability of intra-fraction deviations being＜6 mm was 100.0%,100.0%,and 99.3%for the X,Y,and Z axes,respectively.Correlation analysis revealed a weak correlation between intra-fraction and pre-fraction deviations in the X-axis(P＜0.05),while no significant correlation was observed for the Y and Z axes(P＞0.05).Conclusion:Intra-fraction CBCT effectively monitors and corrects real-time positional deviations in left-sided breast DIBH radiotherapy,serving as a valuable supplement to conventional pre-fraction CBCT.It minimally impacts treatment efficiency while significantly improving positional accuracy,offering clinical and practical benefits for left-breast cancer radiotherapy.

Objective To evaluate the added value of ciprofol and to provide the reference for clinical selection of ciprofol and propofol in patient individualized anesthesia and sedation program.Methods The relative safety,relative effectiveness,innovation/suitability,and economy of propofol and ciprofol were compared and scored according to the Guidelines for Drug Added Value Evaluation based on Health Technology Evaluation.Results Compared with the value of propofol,the total value of ciprofol was 57 points,which was reflected as a small increase.The sedation effect of the two drugs was similar,but propofol had more economic cost advantages,and ciprofol was better than propofol in injection pain,hypotension,and other adverse reactions.Conclusion Propofol and ciprofol should be used reasonably in anesthesia and sedation,considering the health status and economic condition of patients.

Detailed characterizations of genomic alterations have not identified subtype-specific vulnerabilities in adult gliomas. Mapping gliomas into developmental programs may uncover new vulnerabilities that are not strictly related to genomic alterations. After identifying conserved gene modules co-expressed with EGFR or PDGFRA (EM or PM), we recently proposed an EM/PM classification scheme for adult gliomas in a histological subtype- and grade-independent manner. By using cohorts of bulk samples, paired primary and recurrent samples, multi-region samples from the same glioma, single-cell RNA-seq samples, and clinical samples, we here demonstrate the temporal and spatial stability of the EM and PM subtypes. The EM and PM subtypes, which progress in a subtype-specific mode, are robustly maintained in paired longitudinal samples. Elevated activities of cell proliferation, genomic instability and microenvironment, rather than subtype switching, mark recurrent gliomas. Within individual gliomas, the EM/PM subtype was preserved across regions and single cells. Malignant cells in the EM and PM gliomas were correlated to neural stem cell and oligodendrocyte progenitor cell compartment, respectively. Thus, while genetic makeup may change during progression and/or within different tumor areas, adult gliomas evolve within a neurodevelopmental framework of the EM and PM molecular subtypes. The dysregulated developmental pathways embedded in these molecular subtypes may contain subtype-specific vulnerabilities.
Humans ; Brain Neoplasms/pathology* ; Neoplasm Recurrence, Local/metabolism* ; Glioma/pathology* ; Neural Stem Cells/pathology* ; Oligodendrocyte Precursor Cells/pathology* ; Tumor Microenvironment

The promise of regeneration therapy for restoration of damaged myocardium after cardiac ischemic injury relies on targeted delivery of proliferative molecules into cardiomyocytes whose healing benefits are still limited owing to severe immune microenvironment due to local high concentration of proinflammatory cytokines. Optimal therapeutic strategies are therefore in urgent need to both modulate local immunity and deliver proliferative molecules. Here, we addressed this unmet need by developing neutrophil-mimic nanoparticles NM@miR, fabricated by coating hybrid neutrophil membranes with artificial lipids onto mesoporous silica nanoparticles (MSNs) loaded with microRNA-10b. The hybrid membrane could endow nanoparticles with strong capacity to migrate into inflammatory sites and neutralize proinflammatory cytokines and increase the delivery efficiency of microRNA-10b into adult mammalian cardiomyocytes (CMs) by fusing with cell membranes and leading to the release of MSNs-miR into cytosol. Upon NM@miR administration, this nanoparticle could home to the injured myocardium, restore the local immunity, and efficiently deliver microRNA-10b to cardiomyocytes, which could reduce the activation of Hippo-YAP pathway mediated by excessive cytokines and exert the best proliferative effect of miR-10b. This combination therapy could finally improve cardiac function and mitigate ventricular remodeling. Consequently, this work offers a combination strategy of immunity modulation and proliferative molecule delivery to boost cardiac regeneration after injury.

Objective:To investigate the expression of Smad1 in gastric carcinoma and the influence on the migration ability of gastric cancer cells.Methods:Collected the protein from the gastric cancer tissues and corresponding adjacent tissues,the expression level of Smad1 was detected by Western blot.In HGC-27 gastric cancer cells as the research object,the carrier cells transfected with overexpression of Smad1 (p-EGFP-C1/Smad1) and Smad1 small interfering RNA (Smad1 siRNA),while transfection of p-EGFP-C1 and siRNA control as control.MTT to detect cell proliferation.Cell migration ability was detected with cell scratch test.The expression levels of MMP-9,MMP-2,p-Akt and Akt in ceils were detected by Western blot.Akt signal pathway inhibitor LY294002 (20 μg/ml) in gastric adenocarcinoma ceils,MTT for cell proliferation,cell scratch assay for cell migratior.The expression levels of MMP-9,MMP-2,p-Akt,Akt were detected by Western blot.Results:Smadl in gastric carcinoma was significantly lower than the adjacent tissues (P＜ 0.01).The cell survival rate and migration rate of p-EGFP-C1/Smad1 group were significantly lower than that of p-EGFP-C1 group (P＜0.01).The cell survival rate and migration rate of Smad1 siRNA group were significantly higher than those in the siRNA control group (P＜0.01).The expression levels of Akt protein in P-EGFP-C1,p-EGFP-C1/Smad1,Smad1 siRNA,siRNA control cells did not change.The expression levels of MMP-9,MMP-2 and p-Akt in p-EGFP-C1/Smad1 group were significantly lower than that in p-EGFP-C1 group (P＜0.01).The expression levels of MMP-9,MMP-2 and p-Akt in Smad1 siRNA group were significantly higher than that in control siRNA (P＜0.01).The cell proliferation and migration trends in gastric cancer cells effected by Akt signaling pathway inhibitor consistent with the p-EGFP-C1/Smadl group.Conclusion:Low expression of Smad1 in gastric cancer tissue.Smad1 can inhibit the proliferation and migration of gastric cancer cells,the mechanism of action is related to the Akt signaling pathway.