Publications by authors named "Ji-An Hu"

Article Synopsis
  • Type 2 diabetes mellitus (T2DM) worsens bone loss in periodontitis, but the underlying mechanism affecting bone regeneration is not fully understood.
  • Abnormal exosomes from the impaired liver in T2DM are found to increase in the periodontal area, causing destructive cell death (pyroptosis) in periodontal ligament cells.
  • The study identifies fatty acid synthase (Fasn) in these exosomes as a key player in disrupting cell function and promoting bone loss, suggesting that targeting liver Fasn could help mitigate these effects.
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Interleukin (IL)-36 is a family of cytokines that belongs to the larger IL-1 superfamily. IL-36 agonist/antagonist binds to the interleukin-36 receptor involving in physiological inflammation regulation and pathogenesis of many inflammatory diseases. In inflammatory joint diseases, the expression of IL-36 changes, and some studies have initially explored the role of IL-36 in these diseases.

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Sestrins (Sesns), highly conserved stress-inducible metabolic proteins, are known to protect organisms against various noxious stimuli including DNA damage, oxidative stress, starvation, endoplasmic reticulum (ER) stress, and hypoxia. Sesns regulate metabolism mainly through activation of the key energy sensor AMP-dependent protein kinase (AMPK) and inhibition of mammalian target of rapamycin complex 1 (mTORC1). Sesns also play pivotal roles in autophagy activation and apoptosis inhibition in normal cells, while conversely promoting apoptosis in cancer cells.

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Natural extracellular matrices (ECMs) are three-dimensional (3D) and multi-scale hierarchical structure. However, coatings used as ECM-mimicking structures for osteogenesis are typically two-dimensional or single-scaled. Here, we design a distinct quasi-three-dimensional hierarchical topography integrated of density-controlled titania nanodots and nanorods.

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Objective: To investigate the effect of capsaicin cream on the secretion of the submandibular gland (SMG) and the parotid gland (PG) in the general population, with different chilli-eating habits.

Methods: In two groups with different chilli-eating habits, the salivary flow rate of the SMG and the PG was detected at statics and different times, after application of capsaicin cream.

Results: In both groups, the topical application of capsaicin cream could significantly increase the salivary secretion of SMG (P < 0.

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Purpose. To validate the function of autophagy with the regulation of hypoxia inhibitor-induced glycosylation in oral squamous cell carcinoma cell. Methods.

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Background: 15,16-dihydrotanshinone I (DHTI), a lipophilic tanshinone extracted from Danshen root (Salvia miltiorrhiza Bunge), has been reported to function as an antitumor agent. However, its activity on osteosarcoma (OS), the most common primary malignant bone tumor, is unclear.

Objective: This study aimed to determine the effects of DHTI treatment on proliferation, apoptosis and migration of human OS cell line 143B and investigate the possible underlying molecular mechanisms.

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Background: Oral squamous cell carcinoma (OSCC) is one of the most common malignancies in the oral and maxillofacial region. Yes-associated protein 1 (YAP1) has been implicated as a bona fide oncogene in solid tumors. We seek to elucidate the role of YAP1 in OSCC tissue.

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Objective: To systemically investigate receptor activator of nuclear factor-kappaB ligand (RANKL) and macrophage colony-stimulating factor (M-CSF) induced differentiation of osteoclasts.

Methods: Mouse protein-protein interaction(PPI) database NIA and published microarray dataset GES16749 were used to construct and analyze PPI network of RANKL and M-CSF induced mouse monocyte RAW264.7.

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Purpose: The purpose of this study was to investigate and compare bone formation on titanium implant surfaces coated with biomimetically deposited calcium phosphate (BDCaP) or electrochemically deposited hydroxyapatite (EDHA).

Materials And Methods: The implants were separated into three groups: a control group, a BDCaP group, and an EDHA group. Surface analysis was performed by field-emission scanning electron microscopy, x-ray diffractometry, and Fourier transform infrared spectroscopy.

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Article Synopsis
  • This study aimed to explore how increasing levels of Notch1 protein affect the growth of human tongue squamous cell carcinoma (TSCC) cells and the expression of the epidermal growth factor receptor (EGFR).
  • The researchers used a specific plasmid to introduce extra Notch1 into Tca8113 TSCC cells, and then assessed cell growth, apoptosis rates, and levels of Notch1 and EGFR using various laboratory techniques.
  • The findings suggest that elevated Notch1 levels can hinder cell growth and reduce EGFR expression, indicating a potential mechanism for treating TSCC.
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Objective: To investigate the cross-talk between Notch1 and epidermal growth factor receptor (EGFR) signaling in regulating the cellular proliferation of human tongue squamous cell carcinoma (SCC).

Methods: Human tongue SCC cell line Tca8113 cells was transiently transfected with the vector encoding exogenous intracellular fragment of Notch1 and the vector encoding the specific short hairpin RNA (shRNA) targeting EGFR respectively and were treated by AG1478, an inhibitor of receptor tyrosine kinases, for elucidating the effects of constitutive activation, EGFR gene silencing and blocking EGFR signaling upon cellular proliferation and expression of Notch1 and EGFR. The mRNA and protein levels of Notch1 and EGFR were detected by reverse transcriptase polymerase chain reaction (RT-PCR) and Western blot, respectively.

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In this study, we detected the expression of phosphylated ERK1/2 in human salivary adenoid cystic carcinoma (SACC) by immunohistochemical method, the effect of various concentrations of PD98059 on the growth of ACC-M cells (a cell line of human adenoid cystic carcinoma of the salivary glands) by MTT assay, and the effect of PD98059 on the lung metastasis of inoculated ACC-M cells in nude mice. The results showed that the phosphylated ERK1/2 was overexpressed in SACC, the ACC-M cell line proliferation was inhibited by PD98059, and the lung metastasis level was reduced by PD98059, indicating that ERK may be a key molecule in targeted therapy of adenoid cystic carcinoma.

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Purpose: The purpose of this study was to investigate the effects of biomimetically and electrochemically deposited hydroxyapatite on the fixation of an implant with bone tissue.

Materials And Methods: Implants were separated into 3 groups: roughened group, biomimetically deposited calcium-phosphorus (BDCaP) group, and electrochemically deposited hydroxyapatite (EDHA) group. We randomly inserted 90 implants into the femurs of 45 rabbits.

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Article Synopsis
  • - The study aimed to explore Notch1 expression in human tongue squamous carcinoma (TSCC) and precancerous lesions, while also examining its relationship with the epidermal growth factor receptor (EGFR).
  • - Using immunohistochemistry, researchers analyzed samples from TSCC, tongue leukoplakia, and normal tongue mucosa, finding distinct patterns of Notch1 and EGFR expression in different layers of tissue.
  • - Findings suggest that Notch1 acts as a tumor suppressor promoting healthy cell differentiation, while EGFR may inhibit Notch1, supporting cancer cell proliferation and progression in TSCC.
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Article Synopsis
  • The study aimed to explore how silencing the EGFR gene using short hairpin RNA (shRNA) affects the growth and death of human tongue cancer cells.
  • Researchers created a specific shRNA vector targeting the EGFR gene to compare its effects against a control vector and evaluated changes in EGFR expression, cell proliferation, and apoptosis through various laboratory methods.
  • Findings revealed that EGFR silencing significantly reduced its expression, inhibited cell growth, and increased early apoptosis in the cancer cells, indicating a potential therapeutic approach for tongue carcinoma.
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We investigated the expression of Notch1 in human oral squamous cell carcinoma (SCC) and explored its potential correlation with epidermal growth factor receptor (EGFR) signalling in oral SCC. Paraffin sections of primary SCC of the tongue and normal mucosa were screened immunohistochemically for Notch1 and EGFR proteins. Human SCC of the tongue Tca8113 cells were treated with AG1478 to block EGFR signalling, and were transfected with the vector that encodes the specific short hairpin RNA (shRNA) that targets EGFR.

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Objective: The objective of this study was to evaluate and compare the effects of biomimetically and electrochemically deposited nano-hydroxyapatite (HA) coatings on the osseointegration of porous titanium implants after 6 and 12 weeks of insertion in a rabbit bone model.

Study Design: Forty-two roughened implants were separated into 3 groups: roughened group, biomimetically deposited CaP (BDCaP) group, and electrochemically deposited HA (EDHA) group. Implant surface morphology of 3 groups (n = 6) was performed by field-emission scanning electron microscope (FSEM).

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Objective: To investigate the expression of JAK, ERK and Cyclin D proteins in squamous-cell carcinoma of tongue.

Methods: The expression of JAK, ERK and Cyclin D1 proteins was determined with SP immunohistochemical method in 30 cases of lingual Squamous cell carcinoma, 20 of normal lingual mucosa, 10 of mild epithelial dysplasia and 20 of severe epithelial dysplasia.

Results: The expression of pJAK in lingual squamous-cell carcinoma and epithelial dysplasia was stronger than that of normal lingual mucosa (chi2=37.

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Granulocytic sarcoma (GS) is an unusual localized tumor composed of immature granulocytic precursor cells that occurs in extramedullary sites. However, GS involving the oral cavity is rare. We report a case of intraoral GS with an unusual clinical presentation, including a history of chronic myelogenous leukemia in remission, multiple maxillary and mandibular gingival masses mimicking acute inflammation that developed over a short period, complete remission after 1 week of treatment with imatinib mesylate (Gleevec), and no bone marrow or peripheral blood involvement over a 6-month follow-up period.

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Objective: To investigate the relative quantification of cytokeratin 19 transcription in oral squamous cell carcinoma tissues by fluorescent quantitive real-time reverse transcription-polymerase chain reaction ((RT-PCR).

Methods: CK19mRNA level was detected by fluorescent quantitive real-time RT-PCR in cancerous and para-cancerous tissues from 31 oral squamous cell carcinoma patients. According to the 2(-DeltaDeltaCt) equation, the relative quantification fold of CK19mRNA level was calculated in cancerous tissues compared with para-cancerous tissues.

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Oral squamous cell carcinoma (OSCC) is the most common malignant tumour in the oral and maxillofacial region and has a poor prognosis. Cytokeratin 19 (CK19) is a component of cytoskeleton protein. Previous studies have reported abnormal expression of CK19 protein in OSCC tissue.

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