1.Reevaluation of systematic evluation of Xianling gubao capsules for knee osteoarthritis
Dongdong CAO ; Jixin CHEN ; Weijie YU ; Tianci GUO ; Yu ZHANG ; Puyu NIU ; Aifeng LIU
China Pharmacy 2025;36(2):232-238
OBJECTIVE To conduct a reevaluation of the systematic review (SR)/meta-analysis on the use of Xianling gubao capsules (XLGBC) for knee osteoarthritis (KOA), and provide evidence-based support for the clinical use of the drugs. METHODS Computerized searches including CNKI, Wanfang Data, VIP, China Biomedical Literature Database, the Cochrane Library, PubMed, Embase and Web of Science were conducted to collect systematic reviews (SR) or meta-analyses of XLGBC for the treatment of KOA from the inception to May 31st, 2024. The report quality, methodological quality, risk of bias and evidence quality were assessed using the PRISMA 2020 statement, AMSTAR 2 scale, ROBIS tool and GRADE tool, respectively. A comprehensive quality analysis of the quantitative results from the SR/meta-analysis was also performed. RESULTS A total of five SR/meta-analyses were included. The evaluation results based on the PRISMA 2020 statement showed that one study report was relatively complete (21 points), while four studies had deficiencies (18-20 points). The assessment using the AMSTAR 2 scale indicated that the methodological quality of all five studies was rated as very low. According to the ROBIS tool evaluation, the risk of comprehensive bias in all five studies was classified as high. GRADE tool evaluation revealed that among 49 outcome indicators, 5 (10.2%) were rated as moderate-quality evidence (10.2%), 12 as low-quality evidence (24.5%), and 32 as very low-quality evidence (65.3%). The results of comprehensive quality analysis showed that the clinical efficacy, visual analogue scale score, pain relief time, comprehensive indexes of knee joint function, the levels of inflammatory factors and the incidence of adverse events in patients with XLGBC combined with conventional treatment were significantly better than conventional treatment alone (P<0.05). CONCLUSIONS Compared with conventional treatment, XLGBC in combination with conventional treatment for KOA may have some efficacy and safety advantages. However, due to the low quality of evidence for the outcome indicators included in the studies, the conclusions should be interpreted with caution.
2.Reevaluation of systematic evluation of Xianling gubao capsules for knee osteoarthritis
Dongdong CAO ; Jixin CHEN ; Weijie YU ; Tianci GUO ; Yu ZHANG ; Puyu NIU ; Aifeng LIU
China Pharmacy 2025;36(2):232-238
OBJECTIVE To conduct a reevaluation of the systematic review (SR)/meta-analysis on the use of Xianling gubao capsules (XLGBC) for knee osteoarthritis (KOA), and provide evidence-based support for the clinical use of the drugs. METHODS Computerized searches including CNKI, Wanfang Data, VIP, China Biomedical Literature Database, the Cochrane Library, PubMed, Embase and Web of Science were conducted to collect systematic reviews (SR) or meta-analyses of XLGBC for the treatment of KOA from the inception to May 31st, 2024. The report quality, methodological quality, risk of bias and evidence quality were assessed using the PRISMA 2020 statement, AMSTAR 2 scale, ROBIS tool and GRADE tool, respectively. A comprehensive quality analysis of the quantitative results from the SR/meta-analysis was also performed. RESULTS A total of five SR/meta-analyses were included. The evaluation results based on the PRISMA 2020 statement showed that one study report was relatively complete (21 points), while four studies had deficiencies (18-20 points). The assessment using the AMSTAR 2 scale indicated that the methodological quality of all five studies was rated as very low. According to the ROBIS tool evaluation, the risk of comprehensive bias in all five studies was classified as high. GRADE tool evaluation revealed that among 49 outcome indicators, 5 (10.2%) were rated as moderate-quality evidence (10.2%), 12 as low-quality evidence (24.5%), and 32 as very low-quality evidence (65.3%). The results of comprehensive quality analysis showed that the clinical efficacy, visual analogue scale score, pain relief time, comprehensive indexes of knee joint function, the levels of inflammatory factors and the incidence of adverse events in patients with XLGBC combined with conventional treatment were significantly better than conventional treatment alone (P<0.05). CONCLUSIONS Compared with conventional treatment, XLGBC in combination with conventional treatment for KOA may have some efficacy and safety advantages. However, due to the low quality of evidence for the outcome indicators included in the studies, the conclusions should be interpreted with caution.
3.Potential Components and Mechanisms of Ganlu Xiaodu Dan in Treatment of Viral Pneumonia
Weichao ZHANG ; Yayun LI ; Tianci GAO ; Mengxing HOU ; Wenzhong XU ; Fenqiao CHEN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(21):188-196
ObjectiveTo explore the mechanisms of action of Ganlu Xiaodu Dan in treating viral pneumonia by combining network pharmacology and molecular docking with in vivo experimental validation. MethodsNetwork pharmacology and molecular docking were used to predict the core components, target genes, and major pathways of Ganlu Xiaodu Dan. Molecular docking was then applied to verify the interactions between the core components and key targets. Sixty male C57BL/6 mice were randomly divided into six groups (n = 10 per group), including blank, model, dexamethasone, and Ganlu Xiaodu Dan low-, medium-, and high-dose groups. The blank and model groups were gavaged with physiological saline (10 mL·kg-1) every 12 h. The dexamethasone group received intraperitoneal injections of dexamethasone (5 mg·kg-1). The low-, medium-, and high-dose groups of Ganlu Xiaodu Dan were gavaged with solutions at concentrations of 7.2, 14.4, and 21.6 g·kg-1, respectively, every 12 h. Lung wet/dry weight ratio (W/D) was measured. Hematoxylin-eosin (HE) staining was used to observe pathological changes in lung tissue. Enzyme-linked immunosorbent assay (ELISA) was employed to determine the expression levels of tumor necrosis factor-α (TNF-α), interleukin (IL)-17, and IL-1β in bronchoalveolar lavage fluid (BALF). Western blot was performed to detect the expression of phosphoinositide 3-kinase (PI3K) and protein kinase B (Akt) in lung tissue for further validation. ResultsTwelve potential active components of Ganlu Xiaodu Dan were identified through network pharmacology. A total of 306 overlapping target genes were obtained between Ganlu Xiaodu Dan and viral pneumonia. PPI network analysis identified the top 20 key targets, and GO and KEGG enrichment analyses revealed the top 20 signaling pathways. An “active component–target–pathway” network was constructed. Molecular docking demonstrated strong affinity between the core components of Ganlu Xiaodu Dan and key targets related to viral pneumonia. In animal experiments, compared with the blank group, the model group showed severe bronchial epithelial damage, disordered alveolar structure, massive inflammatory cell infiltration, widened alveolar septa, and obvious interstitial edema. W/D, levels of IL-1β, TNF-α, and IL-17 in BALF, and protein expression of p-PI3K/PI3K and p-Akt/Akt in lung tissue were all significantly increased (P<0.05). Compared with the model group, lung injury in the Ganlu Xiaodu Dan groups and the dexamethasone group was alleviated. W/D and TNF-α levels were significantly decreased (P<0.05). IL-1β and IL-17 levels were significantly reduced in the medium- and high-dose groups and the dexamethasone group, and the protein expression levels of p-PI3K/PI3K and p-Akt/Akt in lung tissue were significantly decreased (P<0.05). ConclusionGanlu Xiaodu Dan can alleviate lung injury in viral pneumonia by suppressing the inflammatory response, and its mechanism may be related to the inhibition of PI3K/Akt pathway activation.
4.Potential Components and Mechanisms of Ganlu Xiaodu Dan in Treatment of Viral Pneumonia
Weichao ZHANG ; Yayun LI ; Tianci GAO ; Mengxing HOU ; Wenzhong XU ; Fenqiao CHEN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(21):188-196
ObjectiveTo explore the mechanisms of action of Ganlu Xiaodu Dan in treating viral pneumonia by combining network pharmacology and molecular docking with in vivo experimental validation. MethodsNetwork pharmacology and molecular docking were used to predict the core components, target genes, and major pathways of Ganlu Xiaodu Dan. Molecular docking was then applied to verify the interactions between the core components and key targets. Sixty male C57BL/6 mice were randomly divided into six groups (n = 10 per group), including blank, model, dexamethasone, and Ganlu Xiaodu Dan low-, medium-, and high-dose groups. The blank and model groups were gavaged with physiological saline (10 mL·kg-1) every 12 h. The dexamethasone group received intraperitoneal injections of dexamethasone (5 mg·kg-1). The low-, medium-, and high-dose groups of Ganlu Xiaodu Dan were gavaged with solutions at concentrations of 7.2, 14.4, and 21.6 g·kg-1, respectively, every 12 h. Lung wet/dry weight ratio (W/D) was measured. Hematoxylin-eosin (HE) staining was used to observe pathological changes in lung tissue. Enzyme-linked immunosorbent assay (ELISA) was employed to determine the expression levels of tumor necrosis factor-α (TNF-α), interleukin (IL)-17, and IL-1β in bronchoalveolar lavage fluid (BALF). Western blot was performed to detect the expression of phosphoinositide 3-kinase (PI3K) and protein kinase B (Akt) in lung tissue for further validation. ResultsTwelve potential active components of Ganlu Xiaodu Dan were identified through network pharmacology. A total of 306 overlapping target genes were obtained between Ganlu Xiaodu Dan and viral pneumonia. PPI network analysis identified the top 20 key targets, and GO and KEGG enrichment analyses revealed the top 20 signaling pathways. An “active component–target–pathway” network was constructed. Molecular docking demonstrated strong affinity between the core components of Ganlu Xiaodu Dan and key targets related to viral pneumonia. In animal experiments, compared with the blank group, the model group showed severe bronchial epithelial damage, disordered alveolar structure, massive inflammatory cell infiltration, widened alveolar septa, and obvious interstitial edema. W/D, levels of IL-1β, TNF-α, and IL-17 in BALF, and protein expression of p-PI3K/PI3K and p-Akt/Akt in lung tissue were all significantly increased (P<0.05). Compared with the model group, lung injury in the Ganlu Xiaodu Dan groups and the dexamethasone group was alleviated. W/D and TNF-α levels were significantly decreased (P<0.05). IL-1β and IL-17 levels were significantly reduced in the medium- and high-dose groups and the dexamethasone group, and the protein expression levels of p-PI3K/PI3K and p-Akt/Akt in lung tissue were significantly decreased (P<0.05). ConclusionGanlu Xiaodu Dan can alleviate lung injury in viral pneumonia by suppressing the inflammatory response, and its mechanism may be related to the inhibition of PI3K/Akt pathway activation.
5.Comparative analysis of maxillary distraction osteogenesis and Le Fort Ⅰ osteotomy on maxillary hypoplasia in patients with complex cleft lip and palate
Tianci ZHANG ; Huanzhuo ZHAO ; Man JIANG ; Tao WANG ; Jianping ZHOU ; Li CAO ; Leilei ZHENG
Chinese Journal of Plastic Surgery 2024;40(8):846-856
Objective:To compare the efficacy of maxillary distraction osteogenesis (DO) and Le FortⅠ osteotomy (LFⅠ) in patients with complex cleft lip and palate.Methods:A retrospective study was conducted, clinical data were collected involving patients with complex cleft lip and palate who required combined orthodontic and orthognathic treatment and were treated at the Stomatological Hospital of Chongqing Medical University from January 2015 to December 2022. Patients were divided into three groups based on the surgical method used for the maxilla: total maxillary distraction (TMD, group A), anterior maxillary distraction (AMD, group B), and Le Fort Ⅰ osteotomy (LFⅠ, group C). Cone-beam CT scans and lateral cephalograms were obtained preoperatively and at 3 months postoperatively. Three-dimensional reconstructions were performed using Mimics 21.0 and Dolphin Imaging 11.9 software to evaluate changes in craniofacial morphology and airway. Data analysis was conducted using SPSS 25.0. Intragroup comparisons before and after surgery were performed using the Wilcoxon rank sum test, and intergroup comparisons among the three groups were conducted using the Kruskal-Wallis H test. Results:A total of 15 patients were included, with 5 patients in each group. The cohort comprised 8 males and 7 females, aged between 15 and 21 years. There were no statistically significant differences in the distribution of gender, age, or cleft lip and palate classification among the three groups ( P>0.05). Postoperatively, all three groups showed improvement in maxillary hypoplasia. Compared to preoperative measurements, the angle formed by the points A (subspinale), N (nasion), and B (supramentale) (ANB angle) increased in all three groups (all P<0.05). The vertical distance from point A to the nasion perpendicular (A-Nperp) increased in groups A and B ( P<0.05 for both) but not in group C ( P>0.05). The area of the alveolar gap showed an increasing trend in all three groups ( P>0.05). The mandibular plane angle (FMA) decreased postoperatively in group B but showed an increasing trend in the other two groups, though the differences were not statistically significant ( P>0.05). Postoperative airway volume increased or showed an increasing trend in groups A ( P<0.05) and B ( P>0.05) but decreased in group C ( P>0.05). Intergroup comparisons showed significant differences in the angle formed by the sella (S), nasion (N), and point A (SNA angle) and the vertical distance from the anterior nasal spine to the coronal plane (ANS-CP) ( P<0.05). Group A had significantly larger SNA angles and ANS-CP values than group B, and the ANS-CP value in group A was significantly larger than in group C (all P<0.05). There were no other statistically significant differences among the groups ( P>0.05). Conclusion:For patients with severe maxillary hypoplasia due to complex cleft lip and palate, TMD can correct sagittal discrepancies between the upper and lower jaws, increase upper airway volume, but may potentially enlarge the alveolar gap area and increase vertical height of the maxilla. AMD result in less change in maxillary position compared to TMD and is mainly used for patients with severe maxillary dental crowding, needing increased arch length, having minor sagittal discrepancies, or with preexisting velopharyngeal dysfunction. LFⅠ result in changes in maxillary position similar to AMD but less than TMD, making it suitable for patients with moderate maxillary hypoplasia and mild maxillary dental crowding. The advantage of LFⅠ lies in its precise postoperative occlusal design and accurate three-dimensional movement of the jaw.
6.Comparative analysis of maxillary distraction osteogenesis and Le Fort Ⅰ osteotomy on maxillary hypoplasia in patients with complex cleft lip and palate
Tianci ZHANG ; Huanzhuo ZHAO ; Man JIANG ; Tao WANG ; Jianping ZHOU ; Li CAO ; Leilei ZHENG
Chinese Journal of Plastic Surgery 2024;40(8):846-856
Objective:To compare the efficacy of maxillary distraction osteogenesis (DO) and Le FortⅠ osteotomy (LFⅠ) in patients with complex cleft lip and palate.Methods:A retrospective study was conducted, clinical data were collected involving patients with complex cleft lip and palate who required combined orthodontic and orthognathic treatment and were treated at the Stomatological Hospital of Chongqing Medical University from January 2015 to December 2022. Patients were divided into three groups based on the surgical method used for the maxilla: total maxillary distraction (TMD, group A), anterior maxillary distraction (AMD, group B), and Le Fort Ⅰ osteotomy (LFⅠ, group C). Cone-beam CT scans and lateral cephalograms were obtained preoperatively and at 3 months postoperatively. Three-dimensional reconstructions were performed using Mimics 21.0 and Dolphin Imaging 11.9 software to evaluate changes in craniofacial morphology and airway. Data analysis was conducted using SPSS 25.0. Intragroup comparisons before and after surgery were performed using the Wilcoxon rank sum test, and intergroup comparisons among the three groups were conducted using the Kruskal-Wallis H test. Results:A total of 15 patients were included, with 5 patients in each group. The cohort comprised 8 males and 7 females, aged between 15 and 21 years. There were no statistically significant differences in the distribution of gender, age, or cleft lip and palate classification among the three groups ( P>0.05). Postoperatively, all three groups showed improvement in maxillary hypoplasia. Compared to preoperative measurements, the angle formed by the points A (subspinale), N (nasion), and B (supramentale) (ANB angle) increased in all three groups (all P<0.05). The vertical distance from point A to the nasion perpendicular (A-Nperp) increased in groups A and B ( P<0.05 for both) but not in group C ( P>0.05). The area of the alveolar gap showed an increasing trend in all three groups ( P>0.05). The mandibular plane angle (FMA) decreased postoperatively in group B but showed an increasing trend in the other two groups, though the differences were not statistically significant ( P>0.05). Postoperative airway volume increased or showed an increasing trend in groups A ( P<0.05) and B ( P>0.05) but decreased in group C ( P>0.05). Intergroup comparisons showed significant differences in the angle formed by the sella (S), nasion (N), and point A (SNA angle) and the vertical distance from the anterior nasal spine to the coronal plane (ANS-CP) ( P<0.05). Group A had significantly larger SNA angles and ANS-CP values than group B, and the ANS-CP value in group A was significantly larger than in group C (all P<0.05). There were no other statistically significant differences among the groups ( P>0.05). Conclusion:For patients with severe maxillary hypoplasia due to complex cleft lip and palate, TMD can correct sagittal discrepancies between the upper and lower jaws, increase upper airway volume, but may potentially enlarge the alveolar gap area and increase vertical height of the maxilla. AMD result in less change in maxillary position compared to TMD and is mainly used for patients with severe maxillary dental crowding, needing increased arch length, having minor sagittal discrepancies, or with preexisting velopharyngeal dysfunction. LFⅠ result in changes in maxillary position similar to AMD but less than TMD, making it suitable for patients with moderate maxillary hypoplasia and mild maxillary dental crowding. The advantage of LFⅠ lies in its precise postoperative occlusal design and accurate three-dimensional movement of the jaw.
7.Evaluation of the curative effect of traditional Chinese medicine bone-setting technique in the treatment of knee osteoarthritis
Xi LI ; Jian ZHANG ; Guohui LIU ; Yunhao LIU ; Zekun ZHANG ; Tianci GAO ; Jingxi WANG ; Yongwang ZHANG ; Shilin YIN ; Lu LIU ; Liqing QI ; Shuangqing DU
The Journal of Practical Medicine 2024;40(17):2495-2502
Objective To observe the clinical effect of traditional Chinese medicine bone-setting technique using spinal,pelvi-lower extremity line to treat patients with knee osteoarthritis(KOA).Methods 426 patients with KOA were all from the First Affiliated Hospital of Hebei University of Traditional Chinese Medicine.They were randomly divided into experimental group(384 cases,57 cases of elimination,shedding and termination)by computer generated sequence.Traditional Chinese bone setting techniques were applied with spinal-pelvic-lower limb force line(divided into three parts:lumbar fixed point reduction method,hip joint push-pull and extension method and knee peripheral tendon recovery method every 3 days.2 weeks)treatment;The control group was the waiting treatment group(48 cases,6 cases were eliminated,abscission,termination),which was only used for clinical observation for 2 weeks.The main outcome index was WOMAC pain score.Secondary outcome measures were WOMAC stiffness score,functional score,standardized score and quality of life score(SF-12).The test time points were baseline,2 weeks after enrollment,and follow-up(14 weeks after enrollment).The control group was at baseline and 2 weeks after enrollment.Results Compared with baseline,WOMAC pain score,stiffness score,functional score and standardized score were all decreased in 2 groups 2 weeks after enrollment(P<0.05),but the experimental group was significantly decreased compared with the control group(P<0.001).SF-12 quality of life scores were all higher than before(P<0.001),but the experimental group was significantly higher than the control group(P<0.001).At follow-up,compared with 2 weeks after enrollment,WOMAC pain scores were increased(P<0.001),WOMAC stiffness,joint function and standardized scores were decreased(P<0.001),and SF-12 scores were increased(P<0.001).Conclusion The use of spinal-pelvi-lower extremity line of traditional Chinese medicine bone-setting technique in the treatment of KOA is effective in improving the knee joint function and improving the quality of life of patients,but the short-term effect of pain relief is good,and the long-term effect is not good.Its safety is good,and it can be considered in clinical application for KOA patients with joint dysfunction as the main manifestation.
8.Comparison of the Recent Efficacy of Robot-assisted and Thoracic Laparoscopic Minimally Invasive Mckeown Radical Resection of Esophageal Cancer based on Propensity Score Matching
Tianci ZHANG ; Ligong YUAN ; Jieyong TIAN ; Xinhao LI ; Zhining HUANG ; Xianning WU
Journal of Sun Yat-sen University(Medical Sciences) 2024;45(2):310-318
ObjectiveTo explore the safety and efficacy of robot-assisted minimally invasive esophagectomy (robot-assisted minimally invasive esophagectomy, RAMIE) and thoracic laparoscopy combined with minimally invasive esophageal resection (minimal invasive esophagectomy, MIE). MethodsThe data of 188 patients treated with Da Vinci robot assisted minimally invasive esophageal resection (RAMIE) from April 2021 to December 2022 were analyzed. In the RAMIE group, 69 patients, 49 males and 20 female, age (67.2 ± 7.2); 119 in the MIME group, respectively, 89 males and 30 female, age (69.1 ± 7.0). At 1 ∶ 1, including 58 patients in the RAMIE group and 58 patients in the MIE group. The t-test, Wilcoxon rank-sum test, χ2 test, and so on. ResultsAfter PSM treatment, the clinical data between the two groups. There was no significant difference in operation time, postoperative tube days, and total number of lymph node dissection between the RAMIE and MIE groups (P <0.05); the RAMIE group was better in terms of intraoperative bleeding and the MIE group, statistically significant (P <0.05); the MIE group was better in drainage flow and lymph node dissection for three days (P <0.05). In terms of postoperative complications, there was no statistical difference between RAMIE and MIE groups (P>0.05). ConclusionThe recent efficacy of robot-assisted minimally invasive esophagectomy is comparable to that of thoracic laparoscopy and minimally invasive Mckeown esophagectomy; robotic-assisted minimally invasive esophagectomy can reduce intraoperative bleeding and have more advantages in left recurrent laryngeal nerve lymph node dissection.
9.Metal-organic Framework Immobilized Enzyme and Its Application in Screening of Enzyme Inhibitors of Traditional Chinese Medicine:A Review
Haipeng LIU ; Yong ZHANG ; Jing WANG ; Tianci LYU ; Ruixin DING ; Guihua GAO
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(7):256-264
Enzymes are widely used in chemical and pharmaceutical industries because of their advantages of high efficiency and specificity. However, the shortcomings of the free enzymes, such as poor stability and difficulty in recycling, limit their application. Therefore, the immobilization and application of enzymes have become one of the research hotspots. The selection of the immobilization carriers is a critical step in the process of enzyme immobilization. Metal-organic frameworks(MOFs), a kind of porous materials, are formed by the coordination of metal ions or metal clusters with organic ligands. As an emerging immobilization carrier, its advantages such as high porosity, strong stability, and surface modifiability make it ideal for immobilized enzyme carriers. By immobilizing the free enzyme on MOFs, the above mentioned deficiencies of the free enzymes can be effectively solved, which greatly broaden the applicable condition. Ligand fishing is a method to find receptor-specific ligands from complex components, which has the advantages of high efficiency, simple sample pretreatment and high specificity. The MOF-enzyme complex formed by enzyme immobilization can act as a "fishing rod" for ligand fishing, which can screen out the targets from the complex system of components. The complex chemical composition and various active ingredients of traditional Chinese medicine(TCM) make the ligand fishing technology to play a big role in the screening of enzyme inhibitors from TCM. And the screened enzyme inhibitors are expected to be further developed into the lead compounds with good efficacy and low adverse effects, so the immobilized enzymes of MOFs have a wide application in the screening of active ingredients from TCM. Based on this, this paper summarized the methods of immobilized enzymes of MOFs in recent years, analyzed the characteristics, advantages and disadvantages of each method, and summarized the laws of preparation conditions and mechanisms. Meanwhile, the application and future development of immobilized enzymes of MOFs in the field of enzyme inhibitor screening from TCM were also summarized and prospected, with a view to providing a reference for the development of natural ingredients and the modernization of TCM.
10.Comparison of the impact of orthodontic treatment on pulp volume in adolescents and adults
Man JIANG ; Huanzhuo ZHAO ; Jianxia LI ; Tianci ZHANG ; Wenjie XU ; Xiang LI ; Leilei ZHENG
Chinese Journal of Stomatology 2024;59(2):149-156
Objective:To compare the impact of orthodontic treatment on pulp volume in adolescents and adults.Methods:Cone-beam CT data of 62 patients undergoing orthodontic treatment at the Department of Orthodontics, Stomatological Hospital of Chongqing Medical University, from January 2019 to March 2022 were collected. Patients were divided into two age groups (31 patients in each group): adolescent group (aged 13-17, 17 males and 14 females) and adult group (aged 21-25, 12 males and 19 females). Pre-and post-treatment reconstructions of the pulp and dental tissues of upper first molars (UM1) and lower central incisors (L1) were performed. Measurements included pulp volume for UM1 (UM1 P) and L1 (L1 P), pulp chamber volume (UM1 PC) and root canal volume (UM1 RC) for UM1, root length for L1 (L1 RL), and mesiobuccal root length for UM1 (UM1 RL), as well as chamber heights at specific landmarks [the lengths from the central fossa fusion site to the roof of the pulp chamber (H1), the floor of the pulp chamber (H2), the nearest point of root divergence as well as crown-root bifurcation (H3), the farthest point of root divergence (H4), and the pulp chamber height (H5)] in UM1. Changes in these indices were calculated and analyzed using paired and independent sample t-tests for within-group and between-group differences, respectively. Pearson correlation was used to assess potential associations among H5, root length, and pulp volume changes. Results:Before and after orthodontic treatment, no significant difference was observed in the adult group for L1 P ( t=-0.03, P=0.975), while significant differences were noted for UM1 P, UM1 PC, and UM1 RC ( t=9.98, P<0.001; t=9.04, P<0.001; t=6.69, P<0.001). In the adolescent group, significant differences were found for both L1 P and UM1 P ( t=2.25, P=0.029; t=6.30, P<0.001). After orthodontic treatment, the absolute value changes of UM1 P, UM1 PC, and L1 P in the adolescent group were (19.75±9.58), (15.07±7.65) and (1.89±6.29) mm 3, respectively, and in the adult group were (13.33±9.41), (9.16±7.05) and (0.02±4.66) mm 3, respectively ( t=3.77, P<0.001; t=4.48, P<0.001; t=2.34, P=0.048). There was no significant absolute difference in the amount of UM1 RC between the two groups after orthodontic treatment ( t=0.86, P=0.391). Before and after orthodontic treatment, the absolute value changes of L1 RL, H1 and H5 in the adolescent group were (0.54±0.41), (0.38±0.27) and (0.71±0.33) mm, respectively, and the absolute value changes in the adult group were (0.78±0.62), (0.26±0.20) and (0.57±0.28) mm, respectively ( t=-2.43, P=0.017; t=2.96, P=0.004; t=2.57, P=0.011). Whereas no significant differences were observed for UM1 RL, H2, H3, and H4 ( t=-0.85, P=0.400; t=0.43, P=0.669; t=-0.50, P=0.619; t=1.46, P=0.148). Additionally, significant correlations were found between changes in H5 and UM1 RL with UM1 P ( r=0.35, P<0.001; r=0.19, P=0.030), but not between Changes in L1 RL and L1 P ( r=0.11, P>0.05). Conclusions:The effect of orthodontic treatment on pulp volume in adolescents and adults were different.

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