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  • 1
    In: Journal of Bone and Mineral Research, Wiley, Vol. 38, No. 1 ( 2023-01), p. 214-227
    Abstract: Mechanical force is essential to shape the internal architecture and external form of the skeleton by regulating the bone remodeling process. However, the underlying mechanism of how the bone responds to mechanical force remains elusive. Here, we generated both orthodontic tooth movement (OTM) model in vivo and a cyclic stretch‐loading model in vitro to investigate biomechanical regulation of the alveolar bone. In this study, signal transducer and activator of transcription 3 (STAT3) was screened as one of the mechanosensitive proteins by protein array analysis of cyclic stretch‐loaded bone mesenchymal stem cells (BMSCs) and was also proven to be activated in osteoblasts in response to the mechanical force during OTM. With an inducible osteoblast linage‐specific Stat3 knockout model, we found that Stat3 deletion decelerated the OTM rate and reduced orthodontic force‐induced bone remodeling, as indicated by both decreased bone resorption and formation. Both genetic deletion and pharmacological inhibition of STAT3 in BMSCs directly inhibited mechanical force‐induced osteoblast differentiation and impaired osteoclast formation via osteoblast–osteoclast cross‐talk under mechanical force loading. According to RNA‐seq analysis of Stat3 ‐deleted BMSCs under mechanical force, matrix metalloproteinase 3 ( Mmp3) was screened and predicted to be a downstream target of STAT3 . The luciferase and ChIP assays identified that Stat3 could bind to the Mmp3 promotor and upregulate its transcription activity. Furthermore, STAT3‐inhibitor decelerated tooth movement through inhibition of the bone resorption activity, as well as MMP3 expression. In summary, our study identified the mechanosensitive characteristics of STAT3 in osteoblasts and highlighted its critical role in force‐induced bone remodeling during orthodontic tooth movement via osteoblast–osteoclast cross‐talk. © 2022 American Society for Bone and Mineral Research (ASBMR).
    Type of Medium: Online Resource
    ISSN: 0884-0431 , 1523-4681
    URL: Issue
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    Language: English
    Publisher: Wiley
    Publication Date: 2023
    detail.hit.zdb_id: 2008867-X
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  • 2
    In: Journal of Leukocyte Biology, Oxford University Press (OUP), Vol. 107, No. 4 ( 2020-04-01), p. 635-647
    Abstract: Neutropenia and impaired functions were common manifestation in antiretroviral therapy (ART) in both naïve and experienced PLWHA. Granulopoiesis can be divided into two phases: lineage determination and committed granulopoiesis. However, stage-specific impairment of granulopoiesis in PLWHA with neutropenia remains unclear. A total of 48 ART-naïve and 49 ART-experienced PLWHA from 2016 to 2018 were recruited and divided into non-, mild-, and moderate-to-severe-neutropenia groups according to their neutrophil counts. The bone marrow aspirates and peripheral blood were collected and analyzed by multicolor flow cytometry for granulocyte subsets, hematopoietic stem/progenitor cells (HSPC), apoptosis, and emigration and retention of different subsets. Compared with healthy donors, the percentages of circulating segmented neutrophils were significantly decreased along with an increase of immature neutrophils in both groups. ART-naïve patients with moderate to severe neutropenia exhibited decreased proportion and accelerated apoptosis of relative mature segmented neutrophils. In contrast, ART-experienced patients with neutropenia displayed decreased proportion of granulocyte macrophage progenitors, indicating a defect at a stage of lineage determination. Meanwhile, ART-experienced patients with neutropenia also the expression of CXCR4 segmented neutrophils, suggesting an increased retention of segmented neutrophils inn the bone marrow. ART-naïve patients with neutropenia is caused by increased apoptosis of relatively differentiated neutrophils at committed granulopoiesis, whereas impaired lineage determination and enhanced retention of segmented neutrophils contribute to in ART-experienced patients.
    Type of Medium: Online Resource
    ISSN: 1938-3673 , 0741-5400
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    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2020
    detail.hit.zdb_id: 2026833-6
    SSG: 12
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  • 3
    In: Journal of Affective Disorders, Elsevier BV, Vol. 286 ( 2021-05), p. 33-39
    Type of Medium: Online Resource
    ISSN: 0165-0327
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    Language: English
    Publisher: Elsevier BV
    Publication Date: 2021
    detail.hit.zdb_id: 1500487-9
    SSG: 12
    SSG: 5,2
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  • 4
    In: Journal of Neurology, Neurosurgery & Psychiatry, BMJ, Vol. 89, No. 6 ( 2018-06), p. 618-626
    Abstract: The clinical and epidemiological profiles of Guillain-Barré syndrome (GBS) in southern China have yet to be fully recognised. We aimed to investigate the subtypes of GBS in southern China, compare the clinical features of demyelinating form with that of axonal form and test whether preceding infections and age have influence on the clinical phenotype, disease course and severity of GBS. Methods Medical records of patients with a diagnosis of GBS admitted to 31 tertiary hospitals, located in 14 provinces in southern China, from 1 January 2013 to 30 September 2016, were collected and retrospectively reviewed. Results Finally. 1056 patients, including 887 classic GBS and 169 variants, were enrolled. The 661 classic patients with available electromyographic data were grouped as having acute inflammatory demyelinating polyneuropathy (AIDP, 49.0%), acute motor axonal neuropathy (AMAN, 18.8%), inexcitable (0.9%) and equivocal (31.3%). In contrast to AIDP, patients with AMAN were characterised by earlier nadir (P=0.000), higher Hughes score at nadir (P=0.003) and at discharge (P=0.000). Preceding upper respiratory infections were identified in 369 (34.9%) patients, who were more inclined to develop AIDP (P = 0.000) and Miller-Fisher syndrome (P = 0.027), whereas gastrointestinal infection were found in 89 (8.4%) patients, who were more prone to develop AMAN (P=0.000), with more severe illness (P=0.001) and longer hospital stay (P=0.009). Children (≤15 years) and the elderly (≥56 years) were more severe at nadir, the elderly had the longest hospital stay (P=0.023). Conclusion AIDP is the predominant form in southern China, which is different from data of northern China. The different subtypes, preceding infection and age of onset can partially determine the disease progression, severity and short-term recovery speed of GBS. Clinical trial registration ChiCTR-RRC-17014152.
    Type of Medium: Online Resource
    ISSN: 0022-3050 , 1468-330X
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    Language: English
    Publisher: BMJ
    Publication Date: 2018
    detail.hit.zdb_id: 1480429-3
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  • 5
    In: Journal of Bone and Mineral Research, Oxford University Press (OUP), ( 2024-03-03)
    Abstract: Healthy alveolar bone is the cornerstone of oral function and oral treatment. Alveolar bone is highly dynamic during the entire lifespan and is affected by both systemic and local factors. Importantly, alveolar bone is subjected to unique occlusal force in daily life, and mechanical force is a powerful trigger of bone remodeling, but the effect of occlusal force in maintaining alveolar bone mass remains ambiguous. In this study, the Piezo1 channel is identified as an occlusal force sensor. Activation of Piezo1 rescues alveolar bone loss caused by a loss of occlusal force. Moreover, we identify Piezo1 as the mediator of occlusal force in osteoblasts, maintaining alveolar bone homeostasis by directly promoting osteogenesis and by sequentially regulating catabolic metabolism through Fas ligand (FasL)-induced osteoclastic apoptosis. Interestingly, Piezo1 activation also exhibits remarkable efficacy in the treatment of alveolar bone osteoporosis caused by estrogen deficiency, which is highly prevalent among middle-aged and elderly women. Promisingly, Piezo1 may serve not only as a treatment target for occlusal force loss-induced alveolar bone loss but also as a potential target for metabolic bone loss, especially in older patients.
    Type of Medium: Online Resource
    ISSN: 0884-0431 , 1523-4681
    RVK:
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2024
    detail.hit.zdb_id: 2008867-X
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  • 6
    Online Resource
    Online Resource
    The Endocrine Society ; 2023
    In:  The Journal of Clinical Endocrinology & Metabolism Vol. 108, No. 2 ( 2023-01-17), p. 306-314
    In: The Journal of Clinical Endocrinology & Metabolism, The Endocrine Society, Vol. 108, No. 2 ( 2023-01-17), p. 306-314
    Abstract: Few studies have explored radioactive iodine–refractory (RAIR) disease in children, adolescents, and young adults with papillary thyroid cancer (CAYA-PTC). Objective This study systematically investigated the clinicopathologic characteristics and prognosis of CAYA-PTC with RAIR disease. Methods Sixty-five patients with PTC aged ≤20 years were enrolled in this study, and all patients were confirmed to have pulmonary metastases. Clinicopathologic profiles were compared between the radioactive iodine–avid (RAIA) and RAIR groups. Univariate and multivariate regression analyses were performed to identify risk factors for RAIR status and progressive disease (PD). Gene alterations were detected in 17 patients. Results Overall, 20 patients were included in the RAIR group, accounting for 30.8% (20/65) of all patients. No significant difference in pathologic characteristics was observed between patients aged & lt;15 years and patients aged 15-20 years, but younger patients were more likely to develop RAIR disease (hazard ratio [HR] 3.500, 95% CI 1.134-10.803, P = .023). RET fusions were the most common genetic alterations in CAYA-PTC, but an association with RAIR disease was not det ected (P = .210). RAIR disease (HR 10.008, 95% CI 2.427-41.268, P = .001) was identified as an independent predictor of PD. The Kaplan–Meier curve revealed a lower progression-free survival (PFS) and disease-specific survival (DSS) rate in the RAIR group than in the RAIA group (P & lt; .001 and P = .039). Likewise, RAIR disease was a risk factor for unfavorable PFS in patients aged & lt;15 years (P & lt; .001). Conclusion RAIR disease occurs in one-third of CAYA-PTC with pulmonary metastases. Younger patients (aged & lt; 15 years) are more susceptible to RAIR status, which leads to unfavorable PFS and DSS.
    Type of Medium: Online Resource
    ISSN: 0021-972X , 1945-7197
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    Language: English
    Publisher: The Endocrine Society
    Publication Date: 2023
    detail.hit.zdb_id: 2026217-6
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