Publications by authors named "Mao-Xiao Yan"

Article Synopsis
  • The study aimed to examine how visibility of the mandibular third molar root pulp changes with age in young adults in East China, particularly to see if this could help determine if someone is 18 or older.
  • A sample of 1,280 panoramic dental images from individuals aged 15 to 30 was analyzed using a four-stage classification method to assess root pulp visibility, with age distributions noted at each stage.
  • Results showed that the pulp visibility stages appeared at specific ages, indicating that individuals in stages 1 to 3 were all over 18, suggesting this method can effectively estimate an individual's age based on dental images.
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Recently, 3D dental intraoral scanning technology has been developed rapidly and applied widely in everyday dental practice. Since 3D dental scanning could provide valuable personal information, it enabled researchers to develop novel procedures for individual identification through D-D dentition superimposition. This study aimed to test the applicability of this method in an Eastern Chinese population and propose a threshold for personal identification.

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Article Synopsis
  • A randomized, double-blind, phase 2 trial assessed the safety and effectiveness of a new vaccine, NVSI-06-09, as a booster for UAE adults previously vaccinated with BBIBP-CorV.
  • * The trial involved 516 participants who received either NVSI-06-09 or continued with BBIBP-CorV, showing a similar low incidence of mild adverse reactions in both groups.
  • * Results indicated that NVSI-06-09 produced significantly higher neutralizing antibody levels against various SARS-CoV-2 variants, including significantly better responses against Omicron strains compared to BBIBP-CorV.
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Background: Spontaneous pneumorrhachis with pneumomediastinum, scrotal emphysema, and extensive subcutaneous emphysema caused by acute pneumonia are rarely observed in clinical practice.

Case Presentation: Herein, we report a case of a 12-year-old boy with spontaneous pneumorrhachis with pneumomediastinum, scrotal emphysema, and extensive subcutaneous emphysema caused by a severe cough due to mycoplasma pneumonia. This patient neither received invasive or noninvasive ventilator treatment nor surgical treatment before the onset of the disease.

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The functional properties of endogenous Schwann cells (SCs) during nerve repair are dynamic. Optimizing the functional properties of SCs at different stages of nerve repair may have therapeutic benefit in improving the repair of damaged nerves. Previous studies showed that miR-221-3p promotes the proliferation and migration of SCs, and miR-338-3p promotes the myelination of SCs.

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NVSI-06-08 is a potential broad-spectrum recombinant COVID-19 vaccine that integrates the antigens from multiple SARS-CoV-2 strains into a single immunogen. Here, we evaluate the safety and immunogenicity of NVSI-06-08 as a heterologous booster dose in BBIBP-CorV recipients in a randomized, double-blind, controlled, phase 2 trial conducted in the United Arab Emirates (NCT05069129). Three groups of healthy adults over 18 years of age (600 participants per group) who have administered two doses of BBIBP-CorV 4-6-month, 7-9-month and >9-month earlier, respectively, are randomized 1:1 to receive either a homologous booster of BBIBP-CorV or a heterologous booster of NVSI-06-08.

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The increased coronavirus disease 2019 (COVID-19) breakthrough cases pose the need of booster vaccination. We conducted a randomised, double-blinded, controlled, phase 2 trial to assess the immunogenicity and safety of the heterologous prime-boost vaccination with an inactivated COVID-19 vaccine (BBIBP-CorV) followed by a recombinant protein-based vaccine (NVSI-06-07), using homologous boost with BBIBP-CorV as control. Three groups of healthy adults (600 individuals per group) who had completed two-dose BBIBP-CorV vaccinations 1-3 months, 4-6 months and ≥6 months earlier, respectively, were randomly assigned in a 1:1 ratio to receive either NVSI-06-07 or BBIBP-CorV boost.

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Purpose: To analyze the relationship between upper airway and mandible morphology in patients with skeletal Class Ⅱ malocclusion with cone-beam CT (CBCT).

Methods: Thirty-three volunteers with individual normal occlusion and thirty-three patients with skeletal Class Ⅱ malocclusion were selected to undergo CBCT. All samples were outputted to Dicom and reconstructed using Mimics 19.

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Objective: This study aimed to analyze the efficacy of different doses and forms of corticosteroids in the treatment of postinfectious olfactory dysfunction and to specify the factors related to the curative effects.

Methods: The medical records of patients diagnosed with postinfectious olfactory dysfunction from January 2018 to May 2019 were reviewed. All patients received different doses of oral corticosteroids for 12 days or inhaled corticosteroids for 1 month.

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Background: Digital technology has been widely used in mandibular curved osteotomy to improve accuracy. However, the planning process still highly dependent on the experience and judgement of the surgeon. This study describes an automatic method to design the new gonion and osteotomy line based on the aesthetic standards in attractive women, and assesses its clinical outcomes.

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Background: Interleukin-35 (IL-35), a novel immune-suppressing cytokine, can promote tumor angiogenesis and inhibits anti-tumor cytotoxic lymphocyte response. Here, we aimed to investigate the potential mechanism of the effects of IL-35 on anti-tumor cytotoxic lymphocyte.

Methods: Dendritic cells (DCs) were used to induce anti-tumor cytotoxic lymphocyte.

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Background: General practitioner (GP) preceptors play an important role in the cultivation of GPs. Many problems exist in the training of GP preceptors. This study aimed to explore the willingness and training needs of GP preceptors and compare the differences between preceptors from general practice and other specialties.

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Interleukin-35 (IL-35) has been proposed as a novel immune-suppressing cytokine. However, the function of IL-35 in malignant diseases is yet to be elucidated. The present study investigated IL-35 expression levels in laryngeal squamous cell carcinoma (LSCC) tissues and the peripheral blood of patients to explore the potential involvement of IL-35 in LSCC progression.

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Objective: To discuss the longterm quality-of-life related to swallowing function after different partial laryngectomy.

Methods: The worldwide known swallow quality-of-life questionnaire (SWAL-QOL, Hongkong, Chinese edition); was used in this research to evaluate the swallowing QOL on 96 postoperative patients who underwent different kinds of partial laryngectomy more than one year before. The patients were divided into 4 groups: supracricoid partial laryngectomy-cricohyoidopexy (SCPL-CHP), supracricoid partial laryngectomy-cricohyoidoepiglottopexy (SCPL-CHEP), horizontal supraglottic partial laryngectomy (horizontal PL), and vertical partial laryngectomy (vertical PL).

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Cleft lip and cleft palate are common congenital craniofacial birth defects in humans. Phenytoin (PHT) is a risk factor of cleft palate formation; however, the molecular mechanisms by which phenytoin exerts its teratogenic effects resulting in cleft palate remain unknown. The Satb2 gene mutation is associated with cleft palate.

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The crown inclination, representing an angle formed by the clinical crown axis and a line which bears 90 degrees to the occlusal plane, reflects the labiolingual or buccolingual inclination of the long axis of the crown. The crown inclination is related to the races. And it is compensated by different vertical or sagittal jaw relationships.

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Objective: To investigate the effects and mechanisms of 5-aza-2'-deoxycytidine (5-Aza-CdR) on endometrial cancer cell.

Methods: In vitro experiments of 5-Aza-CdR were done using human endometrial cancer cell line HEC-1B. Evaluation of cellular proliferation and apoptosis was ascertained respectively using trypan blue exclusion and flow cytometry.

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Background: To study arboviruses carried by mosquitoes in Liaoning Province in 2002.

Methods: Totally 4927 mosquitoes were collected from Liaoning Province in July 2002. Virus strains were isolated by inoculating BHK-21, C6/36 and Vero cells.

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