Calcified tissue formation of subcutaneously transplanted mouse dental pulp. 2012

Mariko Ikeda-Isogai, and Tadanobu Ohtsuka, and Kazuyoshi Baba, and Naoko Nonaka, and Masanori Nakamura
Department of Oral Anatomy and Developmental Biology, Showa University School of Dentistry, Shinagawa-ku, Tokyo, Japan.

It is well established that dental pulp has the ability to form calcified tissue, however, the precise process of calcified tissue formation and its characteristics are still undetermined. In this study we examined the process and the matrix components of the calcified tissues by means of subcutaneously transplanted dental pulp tissue. The mid-third of the mouse incisor pulp was transplanted into abdominal subcutaneous tissue. Two calcified tissues were independently formed within the implanted pulp at 7 days after the implantation, one developed in the peripheral region and the other was formed in the middle region of the pulp. Histological investigation indicated the existence of hypertrophic chondrocytes in the peripheral calcified tissue. Immunohistochemical study indicated the colocalization of types I and II collagen surrounding these cells. RT-PCR analysis indicated the transient expression of type II collagen at 7 days and the constant expression of type I collagen, osteonectin, osteocalcin and dentin matrix protein-1 and 2 at all examined times. Dentin sialophosphoprotein was only detected at 28 days after the transplantation. These results indicated that dental pulp cells might have the capacity to form calcified tissue by implanted dental pulp and it is possible that the difference of local environments induced the cells to form different types of calcified tissues within the implanted pulp.

UI MeSH Term Description Entries
D007150 Immunohistochemistry Histochemical localization of immunoreactive substances using labeled antibodies as reagents. Immunocytochemistry,Immunogold Techniques,Immunogold-Silver Techniques,Immunohistocytochemistry,Immunolabeling Techniques,Immunogold Technics,Immunogold-Silver Technics,Immunolabeling Technics,Immunogold Silver Technics,Immunogold Silver Techniques,Immunogold Technic,Immunogold Technique,Immunogold-Silver Technic,Immunogold-Silver Technique,Immunolabeling Technic,Immunolabeling Technique,Technic, Immunogold,Technic, Immunogold-Silver,Technic, Immunolabeling,Technics, Immunogold,Technics, Immunogold-Silver,Technics, Immunolabeling,Technique, Immunogold,Technique, Immunogold-Silver,Technique, Immunolabeling,Techniques, Immunogold,Techniques, Immunogold-Silver,Techniques, Immunolabeling
D008813 Mice, Inbred ICR An inbred strain of mouse that is used as a general purpose research strain, for therapeutic drug testing, and for the genetic analysis of CARCINOGEN-induced COLON CANCER. Mice, Inbred ICRC,Mice, ICR,Mouse, ICR,Mouse, Inbred ICR,Mouse, Inbred ICRC,ICR Mice,ICR Mice, Inbred,ICR Mouse,ICR Mouse, Inbred,ICRC Mice, Inbred,ICRC Mouse, Inbred,Inbred ICR Mice,Inbred ICR Mouse,Inbred ICRC Mice,Inbred ICRC Mouse
D010750 Phosphoproteins Phosphoprotein
D003782 Dental Pulp A richly vascularized and innervated connective tissue of mesodermal origin, contained in the central cavity of a tooth and delimited by the dentin, and having formative, nutritive, sensory, and protective functions. (Jablonski, Dictionary of Dentistry, 1992) Dental Pulps,Pulp, Dental,Pulps, Dental
D003784 Dental Pulp Calcification CALCINOSIS of the DENTAL PULP or ROOT CANAL. Dental Pulp Stones,Denticle,Anomalous Dysplasia of Dentin,Calcification, Dental Pulp,Coronal Dentin Dysplasia,Dental Pulp Stone,Denticles,Dentin Dyspalsia, Shields Type 2,Dentin Dysplasia, Coronal,Dentin Dysplasia, Shields Type II,Dentin Dysplasia, Type II,Pulp Calcification, Dental,Pulp Stone, Dental,Pulp Stones,Pulp Stones, Dental,Pulpal Dysplasia,Stone, Dental Pulp,Stones, Dental Pulp,Calcifications, Dental Pulp,Coronal Dentin Dysplasias,Dental Pulp Calcifications,Dentin Anomalous Dysplasia,Dentin Anomalous Dysplasias,Dentin Dysplasias, Coronal,Dysplasia, Coronal Dentin,Dysplasia, Pulpal,Dysplasias, Coronal Dentin,Dysplasias, Pulpal,Pulp Calcifications, Dental,Pulp Stone,Pulpal Dysplasias,Stone, Pulp,Stones, Pulp
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D012795 Sialoglycoproteins Glycoproteins which contain sialic acid as one of their carbohydrates. They are often found on or in the cell or tissue membranes and participate in a variety of biological activities. Polysialoglycoprotein,Sialoglycopeptide,Sialoglycopeptides,Sialoglycoprotein,Sialoprotein,Sialoproteins,Polysialoglycoproteins
D015675 Osteocalcin Vitamin K-dependent calcium-binding protein synthesized by OSTEOBLASTS and found primarily in BONES. Serum osteocalcin measurements provide a noninvasive specific marker of bone metabolism. The protein contains three residues of the amino acid gamma-carboxyglutamic acid (Gla), which, in the presence of CALCIUM, promotes binding to HYDROXYAPATITE and subsequent accumulation in BONE MATRIX. Bone Gla Protein,Calcium-Binding Protein, Vitamin K-Dependent,Gla Protein, Bone,Vitamin K-Dependent Bone Protein,4-Carboxyglutamic Protein, Bone,Bone gamma-Carboxyglutamic Acid Protein,4 Carboxyglutamic Protein, Bone,Bone 4-Carboxyglutamic Protein,Bone gamma Carboxyglutamic Acid Protein,Calcium Binding Protein, Vitamin K Dependent,Protein, Bone 4-Carboxyglutamic,Protein, Bone Gla,Vitamin K Dependent Bone Protein
D015676 Osteonectin Non-collagenous, calcium-binding glycoprotein of developing bone. It links collagen to mineral in the bone matrix. In the synonym SPARC glycoprotein, the acronym stands for Secreted Protein, Acidic and Rich in Cysteine. SPARC Glycoprotein,BM 40 Protein,BM-40,Basement Membrane Tumor Protein
D016326 Extracellular Matrix Proteins Macromolecular organic compounds that contain carbon, hydrogen, oxygen, nitrogen, and usually, sulfur. These macromolecules (proteins) form an intricate meshwork in which cells are embedded to construct tissues. Variations in the relative types of macromolecules and their organization determine the type of extracellular matrix, each adapted to the functional requirements of the tissue. The two main classes of macromolecules that form the extracellular matrix are: glycosaminoglycans, usually linked to proteins (proteoglycans), and fibrous proteins (e.g., COLLAGEN; ELASTIN; FIBRONECTINS; and LAMININ). Extracellular Matrix Protein,Matrix Protein, Extracellular,Matrix Proteins, Extracellular,Protein, Extracellular Matrix,Proteins, Extracellular Matrix

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