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Titolo:
CELL BEHAVIORS UNDERLYING NOTOCHORD FORMATION AND EXTENSION IN AVIAN EMBRYOS - QUANTITATIVE AND IMMUNOCYTOCHEMICAL STUDIES
Autore:
SAUSEDO RA; SCHOENWOLF GC;
Indirizzi:
UNIV UTAH,SCH MED,DEPT ANAT SALT LAKE CITY UT 84132 UNIV UTAH,SCH MED,DEPT ANAT SALT LAKE CITY UT 84132
Titolo Testata:
The Anatomical record
fascicolo: 1, volume: 237, anno: 1993,
pagine: 58 - 70
SICI:
0003-276X(1993)237:1<58:CBUNFA>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHICK NEURAL PLATE; FLOOR PLATE; XENOPUS-LAEVIS; NERVOUS-SYSTEM; HENSEN NODE; FATE; TUBE; MORPHOGENESIS; INDUCTION; PATTERN;
Keywords:
GROWTH; CELL REARRANGEMENT; GASTRULATION; HENSEN NODE; MESODERM; MITOSIS; MITOTIC SPINDLES; NEURULATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
56
Recensione:
Indirizzi per estratti:
Citazione:
R.A. Sausedo e G.C. Schoenwolf, "CELL BEHAVIORS UNDERLYING NOTOCHORD FORMATION AND EXTENSION IN AVIAN EMBRYOS - QUANTITATIVE AND IMMUNOCYTOCHEMICAL STUDIES", The Anatomical record, 237(1), 1993, pp. 58-70

Abstract

Formation and extension of the notochord is one of the earliest and most obvious events of axis development in vertebrate embryos. In birds, prospective notochord cells arise from Hensen's node and come to liebeneath the midline of the neural plate, where they assist in the process of neurulation and initiate the dorsoventral patterning of the neural tube through sequential inductive interactions. In the present study, we examined notochord development in avian embryos with quantitative and immunological procedures. Extension of the notochord occurs principally through accretion, that is, the addition of cells to its caudal end, a process that involves considerable cell rearrangement at the notochord-Hensen's node interface. In addition, cell division and cell rearrangement within the notochord proper contribute to notochord extension. Thus, extension of the notochord occurs in a manner that is significantly different from that of the adjacent, overlying, midline region of the neural plate (i.e., the median hinge-point region or future floor plate of the neural tube), which as shown in one of the previous studies from our laboratory (Schoenwolf and Alvarez: Development 106:427-439, 1989), extends caudally as its cells undergo two rounds of mediolateral cell-cell intercalation and two-three rounds of cell division. (C) 1993 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/09/20 alle ore 05:25:19