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Titolo:
Highly reproducible spatiotemporal patterns of mammalian embryonic movements at the developmental stage of the earliest spontaneous motility
Autore:
Suzue, T; Shinoda, Y;
Indirizzi:
Tokyo Med & Dent Univ, Dept Physiol, Bunkyo Ku, Tokyo 1138519, Japan TokyoMed & Dent Univ Tokyo Japan 1138519 unkyo Ku, Tokyo 1138519, Japan
Titolo Testata:
EUROPEAN JOURNAL OF NEUROSCIENCE
fascicolo: 8, volume: 11, anno: 1999,
pagine: 2697 - 2710
SICI:
0953-816X(199908)11:8<2697:HRSPOM>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
SPINAL-CORD PREPARATION; LATE-GESTATION; IN-VITRO; PHYSIOLOGICAL ACTIVITIES; RHYTHM GENERATION; CHICK-EMBRYOS; MOUSE FETUSES; RAT; INVITRO; HINDLIMB;
Keywords:
embryonic motility; foetal movements; mice; neural activity;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Suzue, T Tokyo Med & Dent Univ, Dept Physiol, Bunkyo Ku, 1-5-45 Yushima, Tokyo 1138519, Japan Tokyo Med & Dent Univ 1-5-45 Yushima Tokyo Japan 1138519 , Japan
Citazione:
T. Suzue e Y. Shinoda, "Highly reproducible spatiotemporal patterns of mammalian embryonic movements at the developmental stage of the earliest spontaneous motility", EUR J NEURO, 11(8), 1999, pp. 2697-2710

Abstract

The principles underlying the variations in patterns of mammalian embryonic movements have not been established. In an attempt to clarify the mechanism that is responsible for the variations in motor patterns, we carried outa precise quantitative spatiotemporal analysis of movements in mouse embryos, using a transplacental perfusion method for the in vitro maintenance oflive mammalian embryos. Episodes of spontaneous movements at the inceptionof motility, at embryonic day 12.5, occurred once every few minutes, lasted for several seconds and consisted of successive movements of body regions, the spatiotemporal patterns of which varied from episode to episode. By analysing and categorizing the patterns of these movements, we found that embryonic movements follow relatively few restricted patterns with respect tothe order of the movements of body regions. A further analysis of episodesat high spatiotemporal resolution revealed that most of the episodes in a major category could be classified into two distinct subtypes. Each of these subtypes had its own highly reproducible spatiotemporal patterns of movement. Overall, these results show that early embryonic movements follow relatively few rather stereotyped patterns, and random local fluctuations have little effect on such movement patterns. The appearance of one pattern out of several rather stereotyped patterns may be the main cause of apparent variations in patterns of early embryonic movements. The stereotyped patternsmay represent important orderly characteristics of spontaneous embryonic activities that may be involved in the development of orderly structures andfunctions in higher animals.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/01/20 alle ore 01:11:49