1.Finite element analysis of anterior maxillary segmental distraction osteogenesis using asymmetric distractors in patients with unilateral cleft lip and palate
Zehua JIN ; Ruomei LI ; Jiajun SHI ; Yuehua ZHANG ; Zhenqi CHEN
The Korean Journal of Orthodontics 2025;55(2):142-153
Objective:
The treatment of asymmetric maxillary hypoplasia and dental crowding secondary to unilateral cleft lip and palate (UCLP) is often challenging.This study introduced an asymmetric tooth-borne distractor in anterior maxillary segmental distraction osteogenesis and used three-dimensional finite element analysis to evaluate its potential for clinical application in cases of asymmetrical maxillary hypoplasia.
Methods:
A cone-beam computed tomography scan of a late adolescent with UCLP was used to construct a three-dimensional finite element model of the teeth and maxillary structures. An asymmetric distractor model was used to simulate conventional distraction osteogenesis and asymmetric distraction osteogenesis (ADO) to evaluate the resultant stress distribution and displacement.
Results:
Postoperatively, both distraction methods resulted in anterior maxillary segment advancement with a slight upward movement. ADO yielded a greater increase in the dental arch length on the cleft side and induced rotation of the anterior maxillary segment, potentially improving midline deviation. Both methods showed similar stress distributions, with higher stress concentrations on the cleft side.
Conclusions
ADO may offer clinical advantages in correcting asymmetrical maxillary hypoplasia in patients with UCLP by facilitating asymmetrical expansion and rotation of the maxilla. Further research is needed to generalize these findings to other clinical presentations.
2.Finite element analysis of anterior maxillary segmental distraction osteogenesis using asymmetric distractors in patients with unilateral cleft lip and palate
Zehua JIN ; Ruomei LI ; Jiajun SHI ; Yuehua ZHANG ; Zhenqi CHEN
The Korean Journal of Orthodontics 2025;55(2):142-153
Objective:
The treatment of asymmetric maxillary hypoplasia and dental crowding secondary to unilateral cleft lip and palate (UCLP) is often challenging.This study introduced an asymmetric tooth-borne distractor in anterior maxillary segmental distraction osteogenesis and used three-dimensional finite element analysis to evaluate its potential for clinical application in cases of asymmetrical maxillary hypoplasia.
Methods:
A cone-beam computed tomography scan of a late adolescent with UCLP was used to construct a three-dimensional finite element model of the teeth and maxillary structures. An asymmetric distractor model was used to simulate conventional distraction osteogenesis and asymmetric distraction osteogenesis (ADO) to evaluate the resultant stress distribution and displacement.
Results:
Postoperatively, both distraction methods resulted in anterior maxillary segment advancement with a slight upward movement. ADO yielded a greater increase in the dental arch length on the cleft side and induced rotation of the anterior maxillary segment, potentially improving midline deviation. Both methods showed similar stress distributions, with higher stress concentrations on the cleft side.
Conclusions
ADO may offer clinical advantages in correcting asymmetrical maxillary hypoplasia in patients with UCLP by facilitating asymmetrical expansion and rotation of the maxilla. Further research is needed to generalize these findings to other clinical presentations.
3.Finite element analysis of anterior maxillary segmental distraction osteogenesis using asymmetric distractors in patients with unilateral cleft lip and palate
Zehua JIN ; Ruomei LI ; Jiajun SHI ; Yuehua ZHANG ; Zhenqi CHEN
The Korean Journal of Orthodontics 2025;55(2):142-153
Objective:
The treatment of asymmetric maxillary hypoplasia and dental crowding secondary to unilateral cleft lip and palate (UCLP) is often challenging.This study introduced an asymmetric tooth-borne distractor in anterior maxillary segmental distraction osteogenesis and used three-dimensional finite element analysis to evaluate its potential for clinical application in cases of asymmetrical maxillary hypoplasia.
Methods:
A cone-beam computed tomography scan of a late adolescent with UCLP was used to construct a three-dimensional finite element model of the teeth and maxillary structures. An asymmetric distractor model was used to simulate conventional distraction osteogenesis and asymmetric distraction osteogenesis (ADO) to evaluate the resultant stress distribution and displacement.
Results:
Postoperatively, both distraction methods resulted in anterior maxillary segment advancement with a slight upward movement. ADO yielded a greater increase in the dental arch length on the cleft side and induced rotation of the anterior maxillary segment, potentially improving midline deviation. Both methods showed similar stress distributions, with higher stress concentrations on the cleft side.
Conclusions
ADO may offer clinical advantages in correcting asymmetrical maxillary hypoplasia in patients with UCLP by facilitating asymmetrical expansion and rotation of the maxilla. Further research is needed to generalize these findings to other clinical presentations.
4.Finite element analysis of anterior maxillary segmental distraction osteogenesis using asymmetric distractors in patients with unilateral cleft lip and palate
Zehua JIN ; Ruomei LI ; Jiajun SHI ; Yuehua ZHANG ; Zhenqi CHEN
The Korean Journal of Orthodontics 2025;55(2):142-153
Objective:
The treatment of asymmetric maxillary hypoplasia and dental crowding secondary to unilateral cleft lip and palate (UCLP) is often challenging.This study introduced an asymmetric tooth-borne distractor in anterior maxillary segmental distraction osteogenesis and used three-dimensional finite element analysis to evaluate its potential for clinical application in cases of asymmetrical maxillary hypoplasia.
Methods:
A cone-beam computed tomography scan of a late adolescent with UCLP was used to construct a three-dimensional finite element model of the teeth and maxillary structures. An asymmetric distractor model was used to simulate conventional distraction osteogenesis and asymmetric distraction osteogenesis (ADO) to evaluate the resultant stress distribution and displacement.
Results:
Postoperatively, both distraction methods resulted in anterior maxillary segment advancement with a slight upward movement. ADO yielded a greater increase in the dental arch length on the cleft side and induced rotation of the anterior maxillary segment, potentially improving midline deviation. Both methods showed similar stress distributions, with higher stress concentrations on the cleft side.
Conclusions
ADO may offer clinical advantages in correcting asymmetrical maxillary hypoplasia in patients with UCLP by facilitating asymmetrical expansion and rotation of the maxilla. Further research is needed to generalize these findings to other clinical presentations.
5.Finite element analysis of anterior maxillary segmental distraction osteogenesis using asymmetric distractors in patients with unilateral cleft lip and palate
Zehua JIN ; Ruomei LI ; Jiajun SHI ; Yuehua ZHANG ; Zhenqi CHEN
The Korean Journal of Orthodontics 2025;55(2):142-153
Objective:
The treatment of asymmetric maxillary hypoplasia and dental crowding secondary to unilateral cleft lip and palate (UCLP) is often challenging.This study introduced an asymmetric tooth-borne distractor in anterior maxillary segmental distraction osteogenesis and used three-dimensional finite element analysis to evaluate its potential for clinical application in cases of asymmetrical maxillary hypoplasia.
Methods:
A cone-beam computed tomography scan of a late adolescent with UCLP was used to construct a three-dimensional finite element model of the teeth and maxillary structures. An asymmetric distractor model was used to simulate conventional distraction osteogenesis and asymmetric distraction osteogenesis (ADO) to evaluate the resultant stress distribution and displacement.
Results:
Postoperatively, both distraction methods resulted in anterior maxillary segment advancement with a slight upward movement. ADO yielded a greater increase in the dental arch length on the cleft side and induced rotation of the anterior maxillary segment, potentially improving midline deviation. Both methods showed similar stress distributions, with higher stress concentrations on the cleft side.
Conclusions
ADO may offer clinical advantages in correcting asymmetrical maxillary hypoplasia in patients with UCLP by facilitating asymmetrical expansion and rotation of the maxilla. Further research is needed to generalize these findings to other clinical presentations.
6.Osthole ameliorates chronic pruritus in 2,4-dichloronitrobenzene-induced atopic dermatitis by inhibiting IL-31 production.
Shuang HE ; Xiaoling LIANG ; Weixiong CHEN ; Yangji NIMA ; Yi LI ; Zihui GU ; Siyue LAI ; Fei ZHONG ; Caixiong QIU ; Yuying MO ; Jiajun TANG ; Guanyi WU
Chinese Herbal Medicines 2025;17(2):368-379
OBJECTIVE:
This study aims to elucidate the therapeutic potential of osthole for the treatment of atopic dermatitis (AD), focusing on its ability to alleviate chronic pruritus (CP) and the underlying molecular mechanisms.
METHODS:
In this study, we investigated the anti-inflammatory effects of osthole in both a 2,4-dichloronitrobenzene (DNCB)-induced AD mouse model and tumor necrosis factor-α (TNF-α) and interferon-γ (IFN-γ) stimulated huma immortalized epidermal (HaCaT) cells. The anti-itch effect of osthole was specifically assessed in the AD mouse model. Using methods such as hematoxylin and eosin (HE) staining, enzyme-linked immunosorbent assay (ELISA), western blot (WB), quantitative real-time PCR (qRT-PCR), and immunofluorescence staining.
RESULTS:
Osthole improved skin damage and clinical dermatitis scores, reduced scratching bouts, and decreased epidermal thickness AD-like mice. It also reduced the levels of interleukin (IL)-31 and IL-31 receptor A (IL-31 RA) in both skin tissues and HaCaT cells. Furthermore, Osthole suppressed the protein expression levels of phosphor-p65 (p-p65) and phosphor-inhibitor of nuclear factor kappa-Bα (p-IκBα). Meanwhile, it increased the protein expression levels of peroxisome proliferator-activated receptor α (PPARα) and PPARγ in HaCaT cells.
CONCLUSION
These findings indicated that osthole effectively inhibited CP in AD by activating PPARα, PPARγ, repressing the NF-κB signaling pathway, as well as the expression of IL-31 and IL-31 RA.
7.JMJD1C forms condensate to facilitate a RUNX1-dependent gene expression program shared by multiple types of AML cells.
Qian CHEN ; Saisai WANG ; Juqing ZHANG ; Min XIE ; Bin LU ; Jie HE ; Zhuoran ZHEN ; Jing LI ; Jiajun ZHU ; Rong LI ; Pilong LI ; Haifeng WANG ; Christopher R VAKOC ; Robert G ROEDER ; Mo CHEN
Protein & Cell 2025;16(5):338-364
JMJD1C (Jumonji Domain Containing 1C), a member of the lysine demethylase 3 (KDM3) family, is universally required for the survival of several types of acute myeloid leukemia (AML) cells with different genetic mutations, representing a therapeutic opportunity with broad application. Yet how JMJD1C regulates the leukemic programs of various AML cells is largely unexplored. Here we show that JMJD1C interacts with the master hematopoietic transcription factor RUNX1, which thereby recruits JMJD1C to the genome to facilitate a RUNX1-driven transcriptional program that supports leukemic cell survival. The underlying mechanism hinges on the long N-terminal disordered region of JMJD1C, which harbors two inseparable abilities: condensate formation and direct interaction with RUNX1. This dual capability of JMJD1C may influence enhancer-promoter contacts crucial for the expression of key leukemic genes regulated by RUNX1. Our findings demonstrate a previously unappreciated role for the non-catalytic function of JMJD1C in transcriptional regulation, underlying a mechanism shared by different types of leukemias.
Core Binding Factor Alpha 2 Subunit/genetics*
;
Humans
;
Leukemia, Myeloid, Acute/pathology*
;
Jumonji Domain-Containing Histone Demethylases/chemistry*
;
Gene Expression Regulation, Leukemic
;
Oxidoreductases, N-Demethylating/genetics*
;
Cell Line, Tumor
8.Gallstones, cholecystectomy, and cancer risk: an observational and Mendelian randomization study.
Yuanyue ZHU ; Linhui SHEN ; Yanan HUO ; Qin WAN ; Yingfen QIN ; Ruying HU ; Lixin SHI ; Qing SU ; Xuefeng YU ; Li YAN ; Guijun QIN ; Xulei TANG ; Gang CHEN ; Yu XU ; Tiange WANG ; Zhiyun ZHAO ; Zhengnan GAO ; Guixia WANG ; Feixia SHEN ; Xuejiang GU ; Zuojie LUO ; Li CHEN ; Qiang LI ; Zhen YE ; Yinfei ZHANG ; Chao LIU ; Youmin WANG ; Shengli WU ; Tao YANG ; Huacong DENG ; Lulu CHEN ; Tianshu ZENG ; Jiajun ZHAO ; Yiming MU ; Weiqing WANG ; Guang NING ; Jieli LU ; Min XU ; Yufang BI ; Weiguo HU
Frontiers of Medicine 2025;19(1):79-89
This study aimed to comprehensively examine the association of gallstones, cholecystectomy, and cancer risk. Multivariable logistic regressions were performed to estimate the observational associations of gallstones and cholecystectomy with cancer risk, using data from a nationwide cohort involving 239 799 participants. General and gender-specific two-sample Mendelian randomization (MR) analysis was further conducted to assess the causalities of the observed associations. Observationally, a history of gallstones without cholecystectomy was associated with a high risk of stomach cancer (adjusted odds ratio (aOR)=2.54, 95% confidence interval (CI) 1.50-4.28), liver and bile duct cancer (aOR=2.46, 95% CI 1.17-5.16), kidney cancer (aOR=2.04, 95% CI 1.05-3.94), and bladder cancer (aOR=2.23, 95% CI 1.01-5.13) in the general population, as well as cervical cancer (aOR=1.69, 95% CI 1.12-2.56) in women. Moreover, cholecystectomy was associated with high odds of stomach cancer (aOR=2.41, 95% CI 1.29-4.49), colorectal cancer (aOR=1.83, 95% CI 1.18-2.85), and cancer of liver and bile duct (aOR=2.58, 95% CI 1.11-6.02). MR analysis only supported the causal effect of gallstones on stomach, liver and bile duct, kidney, and bladder cancer. This study added evidence to the causal effect of gallstones on stomach, liver and bile duct, kidney, and bladder cancer, highlighting the importance of cancer screening in individuals with gallstones.
Humans
;
Mendelian Randomization Analysis
;
Gallstones/complications*
;
Female
;
Male
;
Cholecystectomy/statistics & numerical data*
;
Middle Aged
;
Risk Factors
;
Aged
;
Adult
;
Neoplasms/etiology*
;
Stomach Neoplasms/epidemiology*
9.Development and Empirical Study of the Organizational Resilience Evaluation Scale of County-level Medical Community
Qunfang HUANG ; Jiajun LI ; Xu LI ; Xiaoling LIN ; Jingchun CHEN ; Chi ZHOU
Chinese Hospital Management 2024;44(10):34-37,48
Objective To develop and empirically validate the County Medical and Health Community Organizational Resilience Evaluation Scale to verify its reliability and validity,and to provide a reference for the management practice of organizational resilience in medical and health communities.Methods The health system resilience framework and the dual resilience analysis framework were used as the content framework of this scale,and the initial scale was formed by literature review reference and interviews,and two rounds of correspondence to 21 experts were conducted to form the County Medical and Health Community Organizational Resilience Evaluation Scale.In October-November 2023,the medical staff of six medical and health communities in Zhejiang Province were sampled to conduct the survey,and SPSS 25.0 software was applied to process the data.Results The internal consistency Cronbach's alpha coefficient of the scale was 0.97,and the Cronbach's alpha coefficients of the five dimensions ranged from 0.67~0.92(P<0.001);the folded half reliability was 0.95,and the alpha coefficients of the two parts were 0.94.The results of the exploratory factor analysis showed that the KMO was 0.95,and that each dimension of the constructed Organizational Resilience Scale and the total score of the scale were positively correlated with the total score of the Strategic Flexibility Scale(P<0.01).Conclusion The Organizational Resilience Measurement Scale designed has good reliability and reference value,and may provide a tool for assessing organizational resilience in county medical and health communities in the future.
10.Development and Empirical Study of the Organizational Resilience Evaluation Scale of County-level Medical Community
Qunfang HUANG ; Jiajun LI ; Xu LI ; Xiaoling LIN ; Jingchun CHEN ; Chi ZHOU
Chinese Hospital Management 2024;44(10):34-37,48
Objective To develop and empirically validate the County Medical and Health Community Organizational Resilience Evaluation Scale to verify its reliability and validity,and to provide a reference for the management practice of organizational resilience in medical and health communities.Methods The health system resilience framework and the dual resilience analysis framework were used as the content framework of this scale,and the initial scale was formed by literature review reference and interviews,and two rounds of correspondence to 21 experts were conducted to form the County Medical and Health Community Organizational Resilience Evaluation Scale.In October-November 2023,the medical staff of six medical and health communities in Zhejiang Province were sampled to conduct the survey,and SPSS 25.0 software was applied to process the data.Results The internal consistency Cronbach's alpha coefficient of the scale was 0.97,and the Cronbach's alpha coefficients of the five dimensions ranged from 0.67~0.92(P<0.001);the folded half reliability was 0.95,and the alpha coefficients of the two parts were 0.94.The results of the exploratory factor analysis showed that the KMO was 0.95,and that each dimension of the constructed Organizational Resilience Scale and the total score of the scale were positively correlated with the total score of the Strategic Flexibility Scale(P<0.01).Conclusion The Organizational Resilience Measurement Scale designed has good reliability and reference value,and may provide a tool for assessing organizational resilience in county medical and health communities in the future.

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