2011 Fiscal Year Final Research Report
Function of the human macula flava and voval fold stellate cells in the human vocal fold
| Project/Area Number |
21592209
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Otorhinolaryngology
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| Research Institution | Kurume University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
UMENO Hirohito 久留米大学, 医学部, 准教授 (40203583)
CHITOSE Shun-ichi 久留米大学, 医学部, 講師 (20299514)
NAKASHIMA Tadashi 久留米大学, 医学部, 教授 (70117183)
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| Project Period (FY) |
2009 – 2011
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| Keywords | ヒト声帯 / 黄斑 / 声帯星型細胞 / 細胞外マトリックス |
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| Research Abstract |
The result of the present study support our hypothesis that the tension caused by phonation(vocal fold vibration) after birth stimulate the vocal fold stellate cells in the anterior and posterior maculae flavae to accelerate production of extracellular matrices and form the vocal ligament, Reinke's space, and characteristic layered structure of the human vocal fold mucosa. This suggests that the vocal fold vibration(phonation) after birth and mechanotransduction of the vocal fold stellate cells in the maculae flavae are important factors in the growth and development of the human vocal fold mucosa.
The vocal fold stellate cells in the human maculae flavae are desmin-positive cells with perinuclear vitamin A droplets and show the morphological features of the cells included in the proposed diffuse stellate cell system. The vocal fold stellate cells are considered to be a new category of cells in the human vocal fold. The maculae flavae are believed to be special microenvironments or niches, that nurture a pool of vocal fold stellate cells
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