Objective: To investigate the accuracy of the mandibular curve of Spee and mandibular curve of Wilson curve, mandibular posterior crown inclination, maxillary and mandibular arch width, and mandibular incisor labial inclination changes in the invisible orthodontic treatment of extracted and non-extracted patients to provide a basis for the study of the therapeutic efficacy of the invisible aligner. Methods: This study was approved by the Unit Medical Ethics Committee. Adult bony Class I patients treated with invisible aligners between 2016 and 2023 were selected and categorized into 32 cases in a group with four first premolar extractions and 33 cases in a non-extraction group. The initial scanning model (T1), the orthodontic plan design model (T2), and the scanning model after alignment and leveling (T3) were collected, and the scanning data at different time points were exported to STL format files. They were then analyzed and measured using GOM Inspect 2019 software; the clinical effect (T1-T3) was defined as AC, and the expected result (T1-T2) was defined as CC. To explore the mandibular curve of Spee, the leveling accuracy of the mandibular Wilson curve (AC/CC×100%), the change in mandibular posterior crown inclination, the change in maxillary and mandibular arch width and the change in mandibular incisor labial inclination. The results were tallied using R4.3.2 software. Results: The leveling accuracy of the mandibular curve of Spee was 3.2% and 10.1% in the extraction and non-extraction groups, respectively; the leveling accuracy of the mandibular first molar in the extraction and non-extraction groups was 9.5% and 4.2%, respectively, and the leveling accuracy of the mandibular second premolar was 32.8% and 25%, respectively. The leveling accuracy of the mandibular curve of Wilson was 126% in the extraction group compared to 704% in the non-extraction group. The maximum values of AC for crown inclination of the mandibular posterior teeth were all found in the first molar and the minimum values in the second premolar (P< 0.05); CC was the greatest in the second premolar and the least in the first molar in the extraction group (P< 0.05), and in the second molar and the least in the second premolar in the non-extraction group (P< 0.05). There was no significant difference in the change of maxillary and mandibular arch widths in the extraction group (P> 0.05); the AC of the arch widths at the maxillary first molar and at the mandibular second premolar and first molar in the non-extraction group was significantly greater than the CC (P< 0.05). The AC of the mandibular second premolar crown inclination was significantly greater in the non-extraction group than in the extraction group (P < 0.05), showing a more pronounced buccal inclination of the crowns; in contrast, there was no significant difference between the mandibular molar crown inclination AC and CC in the two groups (P > 0.05). The CC of mandibular curve of Spee in the extraction group was significantly greater than that in the non-extraction group (P < 0.05), whereas there was no significant difference in AC between the two groups (P > 0.05). In addition, the AC of the labial inclination of the mandibular incisors in the extraction group and the non-extraction group was smaller than the CC, but both were positive, indicating an increase in the degree of labial inclination of the mandibular incisors. Conclusion The invisible aligner mandibular curve of Spee leveling was poorly expressed, and there was a tendency for overexpression of the mandibular curve of Wilson leveling. Increased labial inclination of the mandibular incisors was observed in patients. The extraction group was accurately predicted in arch width control, there was overexpansion in the non-extraction group.

ObjectiveRepetitive transcranial magnetic stimulation (rTMS), a non-invasive brain stimulation technique, offers a non-pharmacological therapeutic option for the management of Alzheimer’s disease (AD). Studies have demonstrated that ferroptosis plays a pivotal role in the pathological onset and progression of AD, and the inhibition of neuronal ferroptosis can significantly ameliorate cognitive impairments associated with AD. The imbalance of calcium ion (Ca²⁺) homeostasis is intimately associated with the pathology of AD and serves as a catalyst for the induction of ferroptosis through various pathways. This study is designed to investigate whether rTMS can ameliorate AD by inhibiting neuronal ferroptosis or maintaining calcium homeostasis, ultimately establishing a theoretical and experimental framework for the utilization of rTMS in AD treatment. MethodsAPP/PS1 AD mice were subjected to both 0.5 Hz low-frequency and 20 Hz high-frequency rTMS treatments, and the efficacy of these treatments was evaluated using novel object recognition and Morris water maze tests. ELISA was employed to quantify the levels of glutathione (GSH), malondialdehyde (MDA), superoxide dismutase (SOD), Fe²⁺ within the hippocampi of mice from each group. HT-22 cells were induced to undergo ferroptosis via Erastin treatment, and subsequent to high- and low-frequency magnetic stimulation, cell viability was assessed using CCK-8 assay, while intracellular calcium ion concentration fluctuations were monitored using Fluo-4 AM. ResultsThe findings revealed that, when compared to normal mice, AD mice displayed a notable decline in cognitive function, accompanied by a substantial increase in ferroptosis levels and intracellular calcium ion concentrations. Both high-frequency and low-frequency applications of rTMS were found to significantly ameliorate cognitive impairments in AD mice, while also effectively mitigating the abnormal augmentation of neuronal ferroptosis and intracellular calcium ion levels. ConclusionThe present study underscores that both high-frequency and low-frequency rTMS exhibit efficacy in alleviating cognitive dysfunction in AD mice, potentially through the modulation of ferroptosis and intracellular calcium ion homeostasis.

This study aims to investigate the pathogenesis of precancerous lesions of gastric cancer(PLGC) and explore the potential molecular mechanism of Weifuchun Capsules(WFC) in treating PLGC via the nuclear factor-κB(NF-κB)/NOD-like receptor protein 3(NLRP3) inflammasome signaling pathway. Ninety male SPF-grade Wistar rats were randomized into a normal feeding group and a modeling group. The normal feeding group received a regular diet, while the modeling group was subjected to the disease-syndrome combined modeling of PLGC. Specifically, the rats had free access to the water containing 120 μg·mL~(-1) N-methyl-N'-nitro-N-nitrosoguanidine(MNNG) and received a diet containing 0.05% ranitidine in an irregular feeding pattern(alternations between fasting and overfeeding). After 15 weeks, the rats in the normal feeding group were randomized into control, control-NF-κB activator betulinic acid(C-BA), and control-NF-κB inhibitor pyrrolidine dithiocarbamaten(C-PDTC) groups. Meanwhile, the rats in the modeling group continuously underwent the modeling procedure and were randomized into model, WFC, model-NF-κB activator(M-BA), and model-NF-κB inhibitor(M-PDTC) groups. The model group and control group were given aseptic water by intragastric administration, once a day. WFC was given at a dose(432 mg·kg~(-1)) 6 times the equivalent dose for adults(body weight: 60 kg) by gavage, once a day. The rats in the C-BA and M-BA groups were administrated with BA by intraperitoneal injection at a dose of 10 mg·kg~(-1), twice a week. The rats in the C-PDTC and M-PDTC groups were administrated with PDTC by intraperitoneal injection at a dose of 50 mg·kg~(-1), twice a week. The interventions were carried out for 4 weeks. Histopathological changes of the gastric mucosa were observed and scored by hematoxylin-eosin(HE) and alcian blue-periodic acid Sthiff(AB-PAS) staining. The levels of inflammatory cytokines including interleukin(IL)-1β, IL-6, IL-18, tumor necrosis factor-alpha(TNF-α), and IL-10 in the gastric tissue were determined by enzyme-linked immunosorbent assay(ELISA). The expression levels of proteins associated with the NF-κB/NLRP3 inflammasome in the gastric mucosa were determined by Western blot. The positive expression areas of proteins related to NF-κB/NLRP3 inflammasome in the gastric mucosa were measured by immunohistochemistry. The results showed that compared with the control group, the model, C-BA, and M-BA groups showed significantly risen scores of mucosal inflammation, degree of inflammatory activity, gland atrophy, and intestinal metaplasia, and the model and M-BA groups showed significanly risen scores of dysplasia. Compared with the model group, the WFC group demonstrated significantly declined scores of mucosal inflammation and degree of inflammatory activity, as well as declined scores of intestinal metaplasia and dysplasia. Compared with the control group, the model and C-BA groups showed significantly elevated levels of IL-1β, IL-6, IL-18, and TNF-α in the gastric tissue, and the model group showed significantly elevated level of IL-10. In addition, the model and C-BA groups showed significantly up-regulated expression of NF-κB p65, NLRP3, cysteine-aspartic acid protease 1(caspase-1), and apoptosis-associated speck-like protein containing a CARD(ASC) in the gastric mucosa and increased positive expression areas of NF-κB p65, NLRP3, and ASC. Compared with the model group, the WFC group showed significantly decreased levels of IL-1β, IL-6, IL-18, TNF-α, and IL-10 in the gastric tissue, and the M-PDTC group showed significantly lowered levels of IL-1β, IL-18, and TNF-α in the gastric mucosa. Both WFC and M-PDTC groups demonstrated significantly down-regulated expression levels of NF-κB p65, phosphorylated NF-κB p65(p-NF-κB p65), NLRP3, and caspase-1 in the gastric mucosa, along with significant decreases in the positive expression areas of NF-κB p65, NLRP3, and ASC. In conclusion, the pathogenesis of PLGC is closely related to the activation of the NF-κB/NLRP3 inflammasome signaling pathway. WFC can alleviate mucosal inflammation, inhibit glandular atrophy, partially reverse intestinal metaplasia, and reduce dysplasia to delay the process of inflammation-cancer transformation, and meanwhile it can effectively lower the levels of inflammatory cytokines and down-regulate the expression of pathway-related proteins in the stomach. Therefore, WFC may treat PLGC by inhibiting the NF-κB/NLRP3 inflammasome signaling pathway.
Animals ; Male ; NF-kappa B/genetics* ; Rats ; Rats, Wistar ; Drugs, Chinese Herbal/administration & dosage* ; Signal Transduction/drug effects* ; NLR Family, Pyrin Domain-Containing 3 Protein/metabolism* ; Stomach Neoplasms/pathology* ; Inflammasomes/genetics* ; Humans ; Precancerous Conditions/metabolism* ; Capsules

OBJECTIVE: To investigate the clinical efficacy and advantages of robot-assisted total knee arthroplasty (TKA) in patients with varus knee osteoarthritis. METHODS: Between October 2022 and June 2023, a total of 59 patients with severe knee osteoarthritis resulting in varus were treated with total knee arthroplasty, aged from 59 to 81 years with an average (70.90±4.63) years, including 19 mals and 40 females. The patients were divided into two groups based on the surgical method used:28 patients in the robot group and 31 patients in the traditional group. The robot group consisted of 8 males and 20 femalse patients, with an average age of (70.54±4.80) years and an average disease duration of (14.89±8.72) months. The traditional group consisted of 11 males and 20 females patients, with an average age of (71.39±4.5) years and an average disease duration of (12.32±6.73) months. The operative duration, amount of bleeding during the operation, postoperative activity time after the operation, hip-knee-ankle angle (HKA), lateral distal femoral angle (LDFA), medial proximal tibial angle (MPTA), and complications were compared between the two groups before and after the operation. Lateral tibia component (LTC), frontal tibia component (FTC), frontal femoral component (FFC) and lateral femoral component (LFC) were measured 6 months after operation Additionally, the degree of knee joint motility, American Knee Society score (KSS), and visual analogue scale(VAS) were compared before and after the operation. RESULTS: All patients had gradeⅠwound healing without any complications, and all patients were followed up for 6 to 8 months, with an average of (6.5±1.5) months. There were no significant differences preoperative imaging evaluation indexes (including HKA, LDFA, and MPTA), preoperative knee mobility, preoperative VAS, and preoperative KSS between the two groups (P>0.05). Comparing the operation time (109.11±7.16) min vs. (83.90±7.85) min, length of the incision (16.60±2.33) cm vs. (14.47±1.41) cm, intraoperative bleeding (106.93±6.15) ml vs. (147.97±7.62) ml, postoperative activity time (17.86±1.84) h vs. (21.77±2.68) h, between the two groups showed statistically significant differences (P<0.05). There were significant differences in FFC (88.96±0.84)° vs. (87.93±1.09)° and LFC (88.57±1.10)° vs. (87.16±1.2)° between the two groups at 6 months after operation (P<0.05). The robotic group 1, 3, 6 months after KSS (75.96±3.96), (81.53±3.78), (84.50±3.29) scores, VAS (3.68±0.67), (2.43±0.79), (0.54±0.64), knee joint mobility (113.32±4.72) °, (123.93±3.99) °, (135.36±2.34) °;Traditional group KSS (73.77±4.18), (76.48±3.60), (80.19±3.28) scores, VAS (4.16±1.04), (3.03±0.75), (1.42±0.76) scores, knee joint mobility (109.19±6.95) °, (119.94±6.08) °, (134.48±2.14) °. Compared to before surgery, both groups showed significant improvement in KSS, VAS and knee mobility during the three follow-up visits (P<0.001). Additionally, postoperative HKA (180.39±1.95)° vs. (178.52±2.23)°, LDFA (89.67±0.63) ° vs. (89.63±0.63)°, and MPTA (89.44±0.55)° vs. (89.29±0.60)° were significantly improved in both groups compared to before surgery (P<0.001). The robotic group had higher KSS than the traditional group at 1, 3, and 6 months after surgery (P<0.05). The robotic group also had lower VAS than the traditional group at 1, 3, and 6 months after surgery (P<0.05). Furthermore, knee mobility was higher in the robotic group than those in the traditional group at 1 and 6 months after surgery (P<0.05), but there was no significant difference between the two groups at 6 months after surgery. CONCLUSION Robot-assisted total knee arthroplasty is a safe and effective method for total knee replacement. The use of robotics can improve the limb axis and prosthesis alignment for patients with preoperative varus deformity, resulting in better clinical and imaging outcomes compared to the conventional group.
Humans ; Female ; Male ; Arthroplasty, Replacement, Knee/methods* ; Aged ; Middle Aged ; Osteoarthritis, Knee/physiopathology* ; Aged, 80 and over ; Robotic Surgical Procedures/methods*

Objective To measure and analyze through cone-beam computed tomography(CBCT)of the incidence of alveolar bone fenestration and dehiscence,as well as the thickness and height of the alveolar bone in the maxillary canine region of adult patients with different sagittal skeletal patterns.Methods A total of 174 adult patients meeting the criteria were selected.In the first step,the inci-dence rates of fenestration and dehiscence were measured and statistically analyzed after grouping according to ANB.In the second step,the patients with bone fenestration and bone dehiscence were excluded,and the thickness of the alveolar bone at the apical,mid-dle and cervical regions on the labial and palatal sides of the maxillary canine area and the height of the alveolar crest were measured in the remaining samples.Then,the three groups of patients were further divided into three groups according to the FMA for comparison and analysis.Results The incidence of bone fenestration and bone dehiscence in the maxillary canine area was higher in adult patients with skeletal Class Ⅱ.The thickness of the labial alveolar bone at the apical region in skeletal Class Ⅲ was greater than that in skeletal Class Ⅱ and skeletal Class Ⅰ.The thickness of the palatal alveolar bone at the middle root in skeletal Class Ⅱ:average angle＞low angle＞high angle.In skeletal Class Ⅲ,the thickness of the palatal alveolar bone at the cervical root:low angle＞average angle＞high angle.Conclusion The incidence of bone fenestration and bone dehiscence was the highest in adult patients with skeletal ClassⅡ.The thickness of the labial alveolar bone at the apical region was greater in skeletal Class Ⅲ than in skeletal Class Ⅱ and skeletal Class Ⅰ.The thickness of the palatal alveolar bone at the middle root in skeletal Class Ⅱ high angle patients was thinner than that in the average angle and low angle groups,and the thickness of the palatal alveolar bone at the cervical region in skeletal Class Ⅲ was thinner in the high angle group than in the average angle and low angle groups.

Aim To investigate the effect of adenovirus(ADV)-mediated Profurin(PF)expression on the plaque stability of ApoE-/-mice.Methods ApoE-/-mice were fed with high-fat diet for 8 weeks,and then treated with ADV-mediated PF intervention,followed by high-fat diet for 4 weeks.Aortic roots were isolated for atherosclerotic plaque area analysis and immunohistochemical analysis.Plasma phospholipid transfer protein(PLTP)activity was detec-ted by fluorescence donor essay,plasma total cholesterol(TC)and triglyceride(TG)were measured by enzyme assay kits,and fast protein liquid chromatography was used for lipoprotein profile analysis.Results Compared with the con-trol group,the plasma TC and TG levels,PLTP activity and circulating tumor necrosis factor-α(TNF-α)and interleukin-6(IL-6)levels in ADV-PF group were significantly decreased(P＜0.01).In the ADV-PF group,there was no significant change in atherosclerotic lesions on the inner surface of the full-length aorta,but the plaque area and lipid area in the aortic root were reduced(P＜0.01),the content of macrophages was significantly decreased(P＜0.01),and the smooth muscle cells and collagen area were not significantly different.The content of matrix metalloproteinase-9 in plaque was signifi-cantly decreased(P＜0.05).Conclusion Overexpression of PF can alleviate atherosclerosis and reduce the levels of circulating inflammatory factors to a certain extent,and effectively improve the plaque stability of ApoE-/-mice.

Objective To conduct microbiological monitoring before the operation of the purified water treatment system in a newly-built endoscopy center,comprehensively analyze the causes for the standard-exceeding results of microbial detection of final rinse water,propose solutions,and provide reference for handling similar events in the future.Methods Microbial detection data of the final rinse water in the newly-built digestive endoscopy center of a tertiary first-class general hospital in Beijing from April to July 2024 were monitored.The potential causes for standard-exceeding results of microbial detection of final rinse water were analyzed from the perspectives of equip-ment maintenance and management of the purified water treatment system as well as the improvement of cleaning and disinfection methods for the purified water supply pipeline in the endoscopy center,targeted improvement mea-sures were proposed accordingly.Results The microbial monitoring result of final rinse water in the newly-built di-gestive endoscopy center built in April 2024 was 1 400 CFU/100 mL,with the main bacterial type being Cupriavi-duspauculus.After five rounds of improvement measures and rechecks,microbial monitoring result of the final rinse water in the newly-built endoscopy center was 0 CFU/100 mL,with a qualification rate of 100％.Analysis suggested that the main causes for the standard-exceeding results of microbial detection of final rinse water were due to the damage of the reverse osmosis membrane,lack of cleaning for the pure water storage tank before use,and non-standard cleaning and disinfection process for the pure water supply pipeline,after targeted improvement,the problem was solved.Conclusion Medical institutions should continuously conduct periodic monitoring on water used for endoscope,regularly perform cleaning and disinfection of the purified water treatment system,standardize cleaning and disinfection procedures,ensure medical quality and patient safety.

Aim To explore the therapeutic effect of Shenwuyishen tablets(SWYST)in treating chronic kidney disease(CKD)and the underlying mechanism.Methods The pharmacological action of SWYST was evaluated in folic acid(FA)-induced mouse models by levels of serum creatinine and blood urea nitrogen,in-dexes of tubulointerstitial inflammation and tubular in-jury,and degrees of renal fibrosis.Differential genes from 22 types of cells in kidney tissue of CKD were i-dentified by single-cell and single-nuclei RNA sequen-cing datasets.Network pharmacology was used to pre-dict key ingredients,cells,and targets.The binding mode between the key ingredients and key targets was elucidated using molecular docking and molecular dy-namics simulation.Results Serum creatinine and blood urea nitrogen levels,tubulointerstitial inflamma-tion and tubular injury indexes,and renal fibrosis de-grees were significantly reduced by SWYST administra-tion.Quercetin,kaempferol,luteolin,baicalein and wogonin were considered as key components that main-ly acted through FOS and JUN of endothelial cells,neu-trophils and thick ascending limb cells to ameliorate CKD.Molecular docking and molecular dynamics sim-ulation revealed that quercetin stably occupied the cross pocket of FOS-JUN heterodimers to inhibit the binding between FOS-JUN heterodimers and DNA.Conclusion SWYST inhibits the binding of FOS-JUN heterodimers and DNA of endothelial cells,neutrophils and thick ascending limb cells to ameliorate CKD.

Wastewater-based epidemiology has emerged as a transformative surveillance tool for estimating substance consumption and monitoring disease prevalence, particularly during the COVID-19 pandemic. It enables the population-level monitoring of illicit drug use, pathogen prevalence, and environmental pollutant exposure. In this perspective, we summarize the key challenges specific to the Chinese context: (1) Sampling inconsistencies, necessitating standardized 24-hour composite protocols with high-frequency autosamplers (≤ 15 min/event) to improve the representativeness of samples; (2) Biomarker validation, requiring rigorous assessment of excretion profiles and in-sewer stability; (3) Analytical method disparities, demanding inter-laboratory proficiency testing and the development of automated pretreatment instruments; (4) Catchment population dynamics, reducing estimation uncertainties through mobile phone data, flow-based models, or hydrochemical parameters; and (5) Ethical and data management concerns, including privacy risks for small communities, mitigated through data de-identification and tiered reporting platforms. To address these challenges, we propose an integrated framework that features adaptive sampling networks, multi-scale wastewater sample banks, biomarker databases with multidimensional metadata, and intelligent data dashboards. In summary, wastewater-based epidemiology offers unparalleled scalability for equitable health surveillance and can improve the health of the entire population by providing timely and objective information to guide the development of targeted policies.
China/epidemiology* ; Humans ; Wastewater/analysis* ; COVID-19/epidemiology* ; Public Health ; Wastewater-Based Epidemiological Monitoring ; SARS-CoV-2

Objective To measure and analyze through cone-beam computed tomography(CBCT)of the incidence of alveolar bone fenestration and dehiscence,as well as the thickness and height of the alveolar bone in the maxillary canine region of adult patients with different sagittal skeletal patterns.Methods A total of 174 adult patients meeting the criteria were selected.In the first step,the inci-dence rates of fenestration and dehiscence were measured and statistically analyzed after grouping according to ANB.In the second step,the patients with bone fenestration and bone dehiscence were excluded,and the thickness of the alveolar bone at the apical,mid-dle and cervical regions on the labial and palatal sides of the maxillary canine area and the height of the alveolar crest were measured in the remaining samples.Then,the three groups of patients were further divided into three groups according to the FMA for comparison and analysis.Results The incidence of bone fenestration and bone dehiscence in the maxillary canine area was higher in adult patients with skeletal Class Ⅱ.The thickness of the labial alveolar bone at the apical region in skeletal Class Ⅲ was greater than that in skeletal Class Ⅱ and skeletal Class Ⅰ.The thickness of the palatal alveolar bone at the middle root in skeletal Class Ⅱ:average angle＞low angle＞high angle.In skeletal Class Ⅲ,the thickness of the palatal alveolar bone at the cervical root:low angle＞average angle＞high angle.Conclusion The incidence of bone fenestration and bone dehiscence was the highest in adult patients with skeletal ClassⅡ.The thickness of the labial alveolar bone at the apical region was greater in skeletal Class Ⅲ than in skeletal Class Ⅱ and skeletal Class Ⅰ.The thickness of the palatal alveolar bone at the middle root in skeletal Class Ⅱ high angle patients was thinner than that in the average angle and low angle groups,and the thickness of the palatal alveolar bone at the cervical region in skeletal Class Ⅲ was thinner in the high angle group than in the average angle and low angle groups.