کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1923928 1048922 2011 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cilia-like structures anchor the amphioxus notochord to its sheath
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
پیش نمایش صفحه اول مقاله
Cilia-like structures anchor the amphioxus notochord to its sheath
چکیده انگلیسی

SummaryBody stiffness is important during undulatory locomotion in fish. In amphioxus, the myosepta play an important role in transmission of muscular forces to the notochord. In order to define the specific supporting role of the notochord in amphioxus during locomotion, the ultrastructure of 10 adult amphioxus specimens was analyzed using transmission electron microscopy. Numerous cilia-like structures were found on the surface of each notochordal cell at the sites of their attachment to the notochordal sheath. Ultrastructurally, these structures consisted of the characteristic arrangement of peripheral and central microtubular doublets and were anchored to the inner layer of the notochordal sheath. Immunohistochemically, a positive reaction to applied dynein and β-tubulin antibodies characterized the area of the cilia-like structures. We propose that reduced back-and-forth movements of the cilia-like structures might contribute to the flow of the fluid content inside the notochord, thus modulating the stiffness of the amphioxus body during its undulatory locomotion.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Histochemica - Volume 113, Issue 1, January 2011, Pages 49–52
نویسندگان
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