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Titolo:
TISSUE AND CELLULAR PATTERNING OF THE MUSCULATURE IN CHICK WINGS
Autore:
ROBSON LG; KARA T; CRAWLEY A; TICKLE C;
Indirizzi:
UNIV LONDON KINGS COLL,RANDALL INST,MRC,MUSCLE & CELL MOTIL UNIT,26-29 DRURY LANE LONDON WC2B 5RL ENGLAND UNIV COLL & MIDDLESEX SCH MED,DEPT ANAT & DEV BIOL LONDON W1P 6DB ENGLAND
Titolo Testata:
Development
fascicolo: 5, volume: 120, anno: 1994,
pagine: 1265 - 1276
SICI:
0950-1991(1994)120:5<1265:TACPOT>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
MYOSIN HEAVY-CHAIN; AVIAN LIMB; POLARIZING REGION; SKELETAL-MUSCLE; CELLS; MESENCHYME; EXPRESSION; MIGRATION; LINEAGES; EMBRYOS;
Keywords:
CHICK LIMB; RETINOIC ACID; MUSCLE FIBER TYPE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
29
Recensione:
Indirizzi per estratti:
Citazione:
L.G. Robson et al., "TISSUE AND CELLULAR PATTERNING OF THE MUSCULATURE IN CHICK WINGS", Development, 120(5), 1994, pp. 1265-1276

Abstract

Development of the musculature involves generation of a precise number of individual muscles arranged in appropriate locations, each with the correct cellular patterning. To find out the rules that govern muscle number and arrangement, the forearm musculature of chick wing buds was analysed following grafts of the polarizing region or application of retinoic acid. Muscle patterns appear symmetrical with 'posterior' muscles now forming in the anterior part of the wing. When the number of muscles that develop is reduced, pattern symmetry is maintained, with loss of anterior muscles in the mid-line, especially dorsally. Strict anteroposterior ordering of muscles in duplicated patterns does notalways occur. The number of muscles that develops bears some relationship to the number of forearm elements. Each muscle has a characteristic pattern of fast and slow fibres. In duplicated wings, each pair of symmetrically arranged muscles has the same fibre type pattern. Not only are proportions of fast and slow fibres similar, but local variations in fibre type arrangement within the muscle are also reproduced. This suggests that the cellular pattern within the new 'posterior' muscles at the anterior of the limb has been re-specified. In manipulated limb buds, which will develop a duplicated muscle pattern, there are nodetectable changes in distribution and number of potentially myogeniccells, and fibre type patterning within early muscle masses also appears normal. In contrast, the splitting process that divides up muscle masses is altered. The appropriate fibre type arrangement only emergesafter splitting is complete. This suggests that tissue patterning andcellular patterning occur at different times during muscle development.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/11/20 alle ore 15:51:30