| Project/Area Number |
03557076
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| Research Category |
Grant-in-Aid for Developmental Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Morphological basic dentistry
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| Research Institution | Showa University |
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Principal Investigator |
YOSHIKI Shusaku Showa Univ., Sch.of Dentistry Professor, 歯学部, 教授 (30085740)
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| Co-Investigator(Kenkyū-buntansha) |
IKEDA Tohru Showa Univ., Sch.of Dentistry Assistant Prof., 歯学部, 講師 (00211029)
YAMAGUCHI Akira Showa Univ., Sch.of Dentistry Associate Prof., 歯学部, 助教授 (00142430)
TACHIKAWA Tetsuhiko Showa Univ., Sch.of Dentistry Associate Prof., 歯学部, 助教授 (10085772)
KAKUTA Saburou Showa Univ., Sch.of Dentistry Associate Prof., 歯学部, 助教授 (40112726)
SAKAMOTO Keizou Showa Univ., Sch.of Medicine Associate Prof., 医学部, 助教授 (50119195)
菱川 健司 昭和大学, 歯学部, 助手 (50189784)
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| Project Period (FY) |
1991 – 1993
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| Project Status |
Completed (Fiscal Year 1993)
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| Budget Amount *help |
¥8,000,000 (Direct Cost: ¥8,000,000)
Fiscal Year 1993: ¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 1992: ¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 1991: ¥3,300,000 (Direct Cost: ¥3,300,000)
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| Keywords | bone tissue / cyanuric chloride / decakcified section / hitochemistry / immunohistochemistry / in situ hybridization / 骨標識 / in situ hybridization |
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| Research Abstract |
Dr.Yoshiki, a principal investigator of this research project, reported the simple method to identify osteoid tissues in decalcified bone sections. In this method, treatment of bone tissues with cyanuric chloride before decalcification is essential to identify osteoid tissues. In the present study, we conducted several experiments to develop new application of this technique for bone research, and obtained the following results.
1) When tartrate acid resistant acid phosphatase (TRACP) activity was detected in various tissues prepared by conventional technique, its activity was found is not only osteoclasts but also mononuclear cells in spleen and lungs. However, its activity was detected in only osteoclasts when tissues were prepared after cyanuric chloride treatment. These results indicate that this technique is useful to identify osteoclast cell lineage in decalcified bone sections.
2) We recently developed in situ hybridization technique for bone sections. We examined the effects of cyanuric chloride treatment on in situ hybridization. The expression of mRNAs for osteocalcin and type I collagen is detected in bone sections prepared after cyanuric chloride treatment as well as bone sections prepared by conventional technique. These results suggest that cyanuric chloride treatment dose not affect detection of mRNA by in situ hybridization. This also suggests the possibility of combined technique of histochemistry and in situ hybridization.
3) We tried immunohistochemistry using bone sections treated with cyanuric chloride, but we obtained strong background staining. This technique is not useful for immunohistochemistry.
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