Publications by authors named "Dashan Wang"

Background: G proteins are a class of important signal transducers in mammalians. G proteins can corpoarated with G proteincoupled receptors (GPCRs) and transmit signals from extracellular stimuli into intracellular response, which will regulate a series of biological functions. G-proteins are heterotrimeric proteins composed of Gα, Gβ, and Gγ subunits.

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This study aimed to investigate the selected anatomical factors that can potentially influence temporomandibular joint (TMJ) clicking in young adults by assessing TMJ structures and lateral pterygoid muscle (LPM) function using magnetic resonance imaging (MRI). The patients were divided into four groups: the healthy control group; the clicking on mouth opening group; the clicking on mouth closing group; and the clicking on mouth opening and closing group. Additionally, we used clinical palpation to evaluate the masticatory muscles' functional state and employed MRI using the OCOR-T1WI-FSE-CLOSED, OSAG-PDW-FSE-CLOSED, and OSAG-PDW-FSE-OPEN sequences to analyze the texture of the lateral pterygoid muscle (LPM).

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Previous datasets have limitations in generalizing evapotranspiration (ET) across various land cover types due to the scarcity and spatial heterogeneity of observations, along with the incomplete understanding of underlying physical mechanisms as a deeper contributing factor. To fill in these gaps, here we developed a global Highly Generalized Land (HG-Land) ET dataset at 0.5° spatial resolution with monthly values covering the satellite era (1982-2018).

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  • The study analyzes the outcomes of immediate dental implant placement in mandibular molars with chronic apical periodontitis (CAP) compared to those without inflammation.
  • Data from patients who underwent this procedure from June 2015 to June 2017 were collected, showing no significant differences in bone mineral density and marginal bone resorption between the two groups five years post-implant.
  • The findings indicate that immediate implant placement in cases of CAP can be viable, as long-term outcomes appear comparable to implants placed in healthier conditions.
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Scutellarin is known as a safe, effective, and low-cost traditional Chinese medicine and has a variety of biological activities. Studies reported that the scutellarin loaded on ultradeformable nanoliposome scutellarin EDTMP (S-UNL-E) could promote osteoblast differentiation and bone formation in vitro. However, its effect on promoting osteogenesis in vivo is still unclear.

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With the development of nanotechnology, nanomaterials have been used in dental fields over the past years. Among them, graphene and its derivatives have attracted great attentions, owing to their excellent physicochemical property, morphology, biocompatibility, multi-differentiation activity, and antimicrobial activity. In our review, we summarized the recent progress about their applications on the dentistry.

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The present research aimed to elucidate a convenient, safe and economic approach to induce the growth of endogenous bone tissue and bone regeneration. S-UNL-E was prepared using reverse-phase evaporation, and scutellarin encapsulation was subsequently compared. Meanwhile, the optimal preparation scheme was developed using an orthogonal method, and the particle size was determined using laser light scattering.

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  • Inflammasomes are molecular platforms in cells that help defend against infections and cellular damage by activating inflammatory responses, specifically caspase-1, which produces inflammatory cytokines IL-1β and IL-18.
  • The NLRP3 inflammasome is the most well-studied type and is crucial for immune defense but can also lead to diseases when not properly regulated.
  • This paper focuses on the involvement of the NLRP3 inflammasome in various rheumatic diseases, including rheumatoid arthritis, where it is found to be highly activated in affected tissues.
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T follicular helper (Tfh) cells represent a novel subset of CD4 T cells which can provide critical help for germinal center (GC) formation and antibody production. The Tfh cells are characterized by the expression of CXC chemokine receptor 5 (CXCR5), programmed death 1 (PD-1), inducible costimulatory molecule (ICOS), B cell lymphoma 6 (BCL-6), and the secretion of interleukin-21 (IL-21). Given the important role of Tfh cells in B cell activation and high-affinity antibody production, Tfh cells are involved in the pathogenesis of many human diseases.

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Making a cost-effective governance of greenhouse gas (GHG) emissions and air pollution is of great importance for megacities to pursue a sustainable future. To achieve this, the present study advocates megacities to implement a two-tier synergic governance system consisting of both synergic governance between GHG and air pollutant emission reductions and between megacities and their surrounding regions. Based on the LEAP model and WRF-SMOKE-CMAQ simulation platform, this study found that climate governance of China's megacity, Shenzhen, could synergistically contribute to decreasing urban annual PM concentration by 5.

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The present study investigated the effectiveness of a Carisolv III + 0.5% sodium hypochlorite (NaOCl)-based root canal irrigant for smear layer removal.Forty maxillary incisors were randomly divided into 4 groups (n = 10 per group).

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  • The study investigates the effectiveness of simvastatin-strontium-hydroxyapatite (Sr-HA) coated implants for improving bone integration in osteoporosis patients, as traditional implants often fail in these individuals.* -
  • Researchers prepared and analyzed the coatings for their surface properties and tested their performance in a rabbit model with osteoporosis over periods of 4, 8, and 12 weeks.* -
  • Results showed that the simvastatin-Sr-HA implants significantly enhanced osteointegration compared to standard HA implants, indicated by faster bone mineralization and better overall mechanical stability, making them promising for patients with weak bone health.*
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  • Aberrant histone acetylation and deacetylation are linked to the development of rheumatoid arthritis (RA), but research on the roles of histone deacetylases (HDACs) and acetyltransferases (HATs) in RA has shown inconsistent results.
  • This study aimed to examine the expression and activity of class I HDACs in peripheral blood mononuclear cells (PBMCs) from RA patients, revealing decreased levels of HDACs and increased HAT activity compared to healthy controls.
  • Specifically, HDAC3 exhibited the most significant reduction in activity, while total histone H3 acetylation was notably higher in RA PBMCs, highlighting an imbalance between HDAC and H
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In the current study, we aimed to examine the function of scutellarin on human osteoblast proliferation and osteogenic function. The results indicated that scutellarin enhanced osteoblast proliferation over a seven day period. This increase in cell proliferation was associated with corresponding increases in osteoblast activity, as measured by alkaline phosphatase (ALP) secretion, intracellular calcium ion influx, and calcium deposition.

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Aim: The aim of this paper is to clarify the critical role of GPCR signaling in T cell immunity.

Methods: The G protein-coupled receptors (GPCRs) are the most common targets in current pharmaceutical industry, and represent the largest and most versatile family of cell surface communicating molecules. GPCRs can be activated by a diverse array of ligands including neurotransmitters, chemokines as well as sensory stimuli.

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Objective: To evaluate the effect of semiconductor laser irradiation on root canal sealing after routine root canal therapy (RCT).

Methods: Sixty freshly extracted single-rooted human teeth were randomly divided into six groups (n = 10). The anatomic crowns were sectioned at the cementoenamel junction and the remaining roots were prepared endodontically with conventional RCT methods.

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The Gq-containing G protein, an important member of class, is ubiquitously expressed in mammalian cells. Gq has been found to play an important role in immune regulation and development of autoimmune disease such as rheumatoid arthritis (RA). However, how Gq participates in the pathogenesis of RA is still not fully understood.

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Rheumatoid arthritis (RA) is a chronic, systematic autoimmune disease that mainly affects joints and bones. Although the precise etiology is still unknown, Th17 cell is being recognized as an important mediator in pathogenesis of RA. VSTM1-v2 is a novel cytokine which has recently been reported to promote the differentiation of Th17 cells.

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Gαq, the α-subunit of Gq protein, is ubiquitously expressed in mammalian cells. It initially attracted attention for its physiological significance in cardiovascular system. In recent years, studies have also indicated the important roles of Gαq in regulating immunity, supplying us a new insight into the mechanism of immune regulation.

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The use of biologic agents has revolutionized the management of rheumatoid arthritis (RA) in the past two decades. These biologic agents directly target molecules and cells involved in the pathogenesis of RA. Biologic agents indeed lead to a better prognosis and clinical remission in patients with RA, especially in patients who are not well-controlled with traditional disease-modifying anti-rheumatic drugs (DMARDs).

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Psoriatic arthritis (PsA) is an inflammatory arthritis, characterized by mild arthralgia to severe joint deformities. Long term management of these diseases with nonsteroidal anti-inflammatory drugs (NSAIDs) and diseasemodifying antirheumatic drugs (DMARDs) is limited due to lack of efficacy and potential organ toxicity. Recently, the approval of injectable biologics, such as T cell inhibitors and TNF-α antagonist, has changed the treatment of moderateto- severe psoriasis and PsA.

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We have previously reported that Gαq, the α subunit of the Gq protein, had important roles in dendritic cell migration, B-cell survival and autoimmunity. In this study, we showed that the deficiency of Gαq led to enhanced T-cell survival. Cultured Gnaq(-/-) T cells exhibited survival advantages both in medium alone and in the presence of anti-CD3 stimulation.

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Objectives: The purpose of the study was to investigate the correlation between fit accuracy and fracture resistance of zirconia abutments, as well as its feasibility for clinical applications.

Methods: Twenty self-made zirconia abutments were tested with 30 Osstem GSII implants. First, 10 Osstem GSII implants were cut into two parts along the long axis and assembled with the zirconia abutments.

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Objectives: Zirconia powder in nanometers can be fabricated into inter-joined abutment of dental implant system with the injection shaping technique. This study was to detect the resistance of inter-joined zirconia abutment with different angle loading for clinical applications.

Materials And Methods: The inter-joined abutments were shaped with the technique of injection of zirconia powder in nanometers.

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