Abstract：
:Osteoporosis is a serious public bone metabolic disease. However, the mechanisms underlying bone loss combined with ageing, which is known as senile osteoporosis, remains unknown. Here we show the detailed phenotype of this disease caused by SIRT6 knock out (KO) in mice. To the best of our knowledge, this is the first study to reveal that SIRT6 is expressed in both bone marrow stroma cells and bone-related cells in both mouse and human models, which suggests that SIRT6 is an important regulator in bone metabolism. SIRT6-KO mice exhibit a significant decrease in body weight and remarkable dwarfism. The skeleton of the SIRT6-KO mouse is deficient in cartilage and mineralized bone tissue. Moreover, the osteocalcin concentration in blood is lower, which suggests that bone mass is markedly lost. Besides, the tartrate-resistant acid phosphatase 5b (TRAP5b) concentration is much higher, which suggests that bone resorption is overactive. Both trabecular and cortical bones exhibit severe osteopenia, and the bone mineral density is decreased. Moreover, double-labelling analysis shows that bone formation is much slower. To determine whether SIRT6 directly regulates bone metabolism, we cultured primary bone marrow stromal cells for osteogenesis and osteoclastogenesis separately to avoid indirect interference in vivo responses such as inflammation. Taken together, these results show that SIRT6 can directly regulate osteoblast proliferation and differentiation, resulting in attenuation in mineralization. Furthermore, SIRT6 can directly regulate osteoclast differentiation and results in a higher number of small osteoclasts, which may be related to overactive bone resorption.
journal_name
Int J Oral Scijournal_title
International journal of oral scienceauthors
Zhang DM,Cui DX,Xu RS,Zhou YC,Zheng LW,Liu P,Zhou XDdoi
10.1038/ijos.2015.57subject
Has Abstractpub_date
2016-06-30 00:00:00pages
84-92issue
2eissn
1674-2818issn
2049-3169pii
ijos201557journal_volume
8pub_type
杂志文章abstract：:Although a few studies have shown that vascularity is increased from normal mucosa to dysplasia to carcinoma suggesting that disease progression in the oral mucosa is accompanied by angiogenesis. The role in lymph node metastasis in oral squamous cell carcinoma (OSCC) is equivocal. Role of angiogenesis in OSCC develop...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.4248/IJOS11077
更新日期：2011-10-01 00:00:00
abstract：:This in vitro study aims to evaluate the crystal and surface microstructure of dental enamel after cold-light bleaching treatment. Twelve sound human premolars were cross-split into four specimens, namely, mesio-buccal (Group LP), disto-buccal (Group P), mesio-lingual (Group NP) and disto-lingual (Group L) specimens. ...
journal_title：International journal of oral science
pub_type： 杂志文章,随机对照试验
doi：10.1038/ijos.2012.70
更新日期：2012-12-01 00:00:00
abstract：:Bone defects caused by trauma, tumour resection, infection and congenital deformities, together with articular cartilage defects and cartilage-subchondral bone complex defects caused by trauma and degenerative diseases, remain great challenges for clinicians. Novel strategies utilising cell sheet technology to enhance...
journal_title：International journal of oral science
pub_type： 杂志文章,评审
doi：10.1038/s41368-019-0050-5
更新日期：2019-05-21 00:00:00
abstract：:To modify two-step experimental etch-and-rinse dentin adhesive with different concentrations of riboflavin and to study its effect on the bond strength, degree of conversion, along with resin infiltration within the demineralized dentin substrate, an experimental adhesive-system was modified with different concentrati...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/ijos.2014.49
更新日期：2015-06-26 00:00:00
abstract：:When adipose-derived stem cells (ASCs) are retrieved from the stromal vascular portion of adipose tissue, a large amount of mature adipocytes are often discarded. However, by modified ceiling culture technique based on their buoyancy, mature adipocytes can be easily isolated from the adipose cell suspension and dediff...
journal_title：International journal of oral science
pub_type： 杂志文章,评审
doi：10.4248/IJOS11044
更新日期：2011-07-01 00:00:00
abstract：:Tooth decay is prevalent, and secondary caries causes restoration failures, both of which are related to demineralization. There is an urgent need to develop new therapeutic materials with remineralization functions. This article represents the first review on the cutting edge research of poly(amido amine) (PAMAM) in ...
journal_title：International journal of oral science
pub_type： 杂志文章,评审
doi：10.1038/s41368-019-0048-z
更新日期：2019-05-09 00:00:00
abstract：:In this study, we evaluate the influence of post surface pre-treatments on the bond strength of four different cements to glass fiber posts. Eighty extracted human maxillary central incisors and canines were endodontically treated and standardized post spaces were prepared. Four post pre-treatments were tested: (i) no...
journal_title：International journal of oral science
pub_type： 杂志文章,随机对照试验
doi：10.1038/ijos.2013.83
更新日期：2014-03-01 00:00:00
abstract：AIM:To evaluate the effect of single or dual field irradiation (IR) with the same dose on damage to miniature pig parotid glands. METHODOLOGY:Sixteen miniature pigs were divided into two IR groups (n=6) and a control group (n=4). The irradiation groups were subjected to 20 Gy X-radiation to one parotid gland using sin...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.4248/ijos.08001
更新日期：2009-03-01 00:00:00
abstract：:Dental caries are the most prevalent chronic infections in the oral cavity, and Streptococcus mutans acts as the main cariogenic bacterial species. Antibacterial quaternary ammonium compounds (QAs) have been developed to preveFnt or treat dental caries. However, there is no report on the tolerance of S. mutans to QAs....
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/ijos.2017.46
更新日期：2017-12-01 00:00:00
abstract：:The aim of the study was a determination of the levels of nitric oxide (NO) and its biological markers such as malonyldialdehyde (MDA) and nitrotyrosine in the serum of patients with squamous cell carcinoma (SCC) of the oral cavity and identification of the relationships between NO and those markers. These studies wer...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/ijos.2013.59
更新日期：2013-09-01 00:00:00
abstract：:Tooth development is a complex process that involves precise and time-dependent orchestration of multiple genetic, molecular, and cellular interactions. Ameloblastin (AMBN, also named "amelin" or "sheathlin") is the second most abundant enamel matrix protein known to have a key role in amelogenesis. Amelogenesis imper...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/s41368-018-0027-9
更新日期：2018-09-03 00:00:00
abstract：:The presence of a large palatal or maxillary defect after partial or total maxillectomy for tumor, trauma or congenital deformation poses a challenge to prosthodontists, particularly when the use of an implant cannot be considered. This case report described the use of an air valve in a hollow silicone obturator to ma...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/ijos.2012.22
更新日期：2012-06-01 00:00:00
abstract：:Optical spectroscopy devices are being developed and tested for the screening and diagnosis of oral precancer and cancer lesions. This study reports a device that uses white light for detection of suspicious lesions and green-amber light at 545 nm that detect tissue vascularity on patients with several suspicious oral...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/ijos.2014.39
更新日期：2014-09-01 00:00:00
abstract：:Sites of implantation with compromised biology may be unable to achieve the required level of angiogenic and osteogenic regeneration. The specific function and contribution of different cell types to the formation of prevascularized, osteogenic networks in co-culture remains unclear. To determine how bone marrow-deriv...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/ijos.2016.39
更新日期：2016-12-16 00:00:00
abstract：:To evaluate the feasibility and accuracy of a three-dimensional augmented reality system incorporating integral videography for imaging oral and maxillofacial regions, based on preoperative computed tomography data. Three-dimensional surface models of the jawbones, based on the computed tomography data, were used to c...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/ijos.2013.26
更新日期：2013-06-01 00:00:00
abstract：:The aim of the present real time in vivo micro-computed tomography (µCT) and histologic experiment was to assess the efficacy of guided bone regeneration (GBR) around standardized calvarial critical size defects (CSD) using bone marrow-derived mesenchymal stem cells (BMSCs), and collagen membrane (CM) with and without...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/ijos.2015.34
更新日期：2016-03-30 00:00:00
abstract：AIM:The purpose of this study is to compare the effects of the two clutches on recording the condylar movement. METHODOLOGY:Ten subjects (6 women, 4 men; mean age 25.4 years) participated in the study. The mandibular movement, sagittal condylar inclination angle, and transversal condylar inclination angle of each subj...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.4248/IJOS10071
更新日期：2010-12-01 00:00:00
abstract：:Tissue engineering allows the design of functionally active cells within supportive bio-scaffolds to promote the development of new tissues such as cartilage and bone for the restoration of pathologically altered tissues. However, all bone tissue engineering applications are limited by a shortage of stem cells. The ad...
journal_title：International journal of oral science
pub_type： 杂志文章,评审
doi：10.4248/IJOS10045
更新日期：2010-09-01 00:00:00
abstract：AIM:To investigate the effect of DAPT (gamma-secretase inhibitor) on the growth of human tongue carcinoma cells and to determine the molecular mechanism to enable the potential application of DAPT to the treatment of tongue carcinoma. METHODOLOGY:Human tongue carcinoma Tca8113 cells were cultured with DAPT. Cell growt...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.4248/ijos.08025
更新日期：2009-06-01 00:00:00
abstract：:Apoptosis or programmed cell death plays an essential role in chemotherapy-induced tumor cell killing, and inducers of apoptosis are commonly used in cancer therapy. Treatment with Zelkova serrata extracts was performed in human gingival fibroblast (HGF), mouth epidermoid carcinoma cell (KB), lower gingival squamous c...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/ijos.2012.14
更新日期：2012-06-01 00:00:00
abstract：:Effective control of oral biofilm infectious diseases represents a major global challenge. Microorganisms in biofilms exhibit increased drug tolerance compared with planktonic cells. The present review covers innovative antimicrobial strategies for controlling oral biofilm-related infections published predominantly ov...
journal_title：International journal of oral science
pub_type： 杂志文章,评审
doi：10.1038/s41368-019-0062-1
更新日期：2019-10-01 00:00:00
abstract：:Bacterial biofilms can be viewed as a specific type of persistent bacterial infection. After initial invasion, microbes can attach to living and non-living surfaces, such as prosthetics and indwelling medical devices, and form a biofilm composed of extracellular polysaccharides, proteins, and other components. In host...
journal_title：International journal of oral science
pub_type： 杂志文章,评审
doi：10.4248/IJOS11022
更新日期：2011-04-01 00:00:00
abstract：:The root is crucial for the physiological function of the tooth, and a healthy root allows an artificial crown to function as required clinically. Tooth crown development has been studied intensively during the last few decades, but root development remains not well understood. Here we review the root development proc...
journal_title：International journal of oral science
pub_type： 杂志文章,评审
doi：10.1038/ijos.2012.61
更新日期：2012-12-01 00:00:00
abstract：:The aim of this study was to evaluate the biological efficacy of a unique perpendicular protrusion of type-I collagen (Col-I) from TiO2 nanotubes (NT-EPF surface). We hypothesized that the NT-EPF surface would play bifunctional roles in stimulating platelet-mediated fibroblast recruitment and anchoring fibroblast-deri...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/s41368-020-00103-3
更新日期：2020-12-30 00:00:00
abstract：:Bone remodelling keeps going through the lifespan of human by bone formation and bone resorption. In the craniofacial region, mandibles act as the main force for biting and chewing, and also become susceptible to a common bone-loss disease, namely, apical periodontitis, once infected dental pulp is not treated timely,...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/s41368-019-0058-x
更新日期：2019-08-26 00:00:00
abstract：:The oral microbial community is widely regarded as a latent reservoir of antibiotic resistance genes. This study assessed the molecular epidemiology, susceptibility profile, and resistance mechanisms of 35 methicillin-resistant Staphylococcus epidermidis (MRSE) strains isolated from the dental plaque of a healthy huma...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/s41368-020-0079-5
更新日期：2020-05-09 00:00:00
abstract：:Both bone morphogenetic protein 2 (BMP2) and the wingless-type MMTV integration site (WNT)/β-catenin signalling pathway play important roles in odontoblast differentiation and dentinogenesis. Cross-talk between BMP2 and WNT/β-catenin in osteoblast differentiation and bone formation has been identified. However, the ro...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/ijos.2015.7
更新日期：2015-06-26 00:00:00
abstract：:Retention wires permanently bonded to the anterior teeth are used after orthodontic treatment to prevent the teeth from relapsing to pre-treatment positions. A disadvantage of bonded retainers is biofilm accumulation on the wires, which produces a higher incidence of gingival recession, increased pocket depth and blee...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/ijos.2014.69
更新日期：2015-03-23 00:00:00
abstract：:Saliva is secreted from the salivary glands and has multiple functions, including mouth cleaning and protection, antibacterial effects and digestion. With the rapid advancement in salivaomics, saliva is well recognized as a pool of biological markers. Saliva, as a non-invasive and safe source, could be a substitute fo...
journal_title：International journal of oral science
pub_type： 杂志文章,评审
doi：10.1038/ijos.2016.38
更新日期：2016-09-29 00:00:00
abstract：:Secondary caries due to biofilm acids is a primary cause of dental composite restoration failure. To date, there have been no reports of dental composites that can repel protein adsorption and inhibit bacteria attachment. The objectives of this study were to develop a protein-repellent dental composite by incorporatin...
journal_title：International journal of oral science
pub_type： 杂志文章
doi：10.1038/ijos.2014.77
更新日期：2015-06-26 00:00:00
