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Spontaneous cyclic embryonic movements in humans and guinea pigs
Developmental neurobiology (Hoboken, N.J.), 2012-08, Vol.72 (8), p.1133-1139
Felt, Renée H.M.
Mulder, Eduard J.H.
Lüchinger, Annemarie B.
van Kan, Colette M.
Taverne, Marcel A.M.
de Vries, Johanna I.P.
2012
Details
Autor(en) / Beteiligte
Felt, Renée H.M.
Mulder, Eduard J.H.
Lüchinger, Annemarie B.
van Kan, Colette M.
Taverne, Marcel A.M.
de Vries, Johanna I.P.
Titel
Spontaneous cyclic embryonic movements in humans and guinea pigs
Ist Teil von
Developmental neurobiology (Hoboken, N.J.), 2012-08, Vol.72 (8), p.1133-1139
Ort / Verlag
Hoboken: Wiley Subscription Services, Inc., A Wiley Company
Erscheinungsjahr
2012
Link zum Volltext
Quelle
Wiley-Blackwell Journals
Beschreibungen/Notizen
Motility assessment before birth can be used to evaluate the integrity of the nervous system. Sideways bending (SB) of head and/or rump, the earliest embryonic motility in both humans and guinea pigs, can be visualized sonographically. We know from other species that early embryonic motility is cyclic. This study explores the distribution of SB‐to‐SB intervals in human and guinea pig embryos before the appearance of more complex movements such as general movements. We hypothesized that the activity in both species is cyclic. We made 15‐min sonographic recordings of SBs between 5 weeks and 0 days (5wk0d) and 7wk0d conceptional age (CA) in 18 human embryos of uncomplicated IVF pregnancies (term 38 weeks) and in 20 guinea pig embryos between 3wk4d and 4wk0d CA (term 9 weeks). SB‐to‐SB interval durations were categorized as long (≥10 s) or short (<10 s) intervals. For human embryos, the median values for long and short intervals were 61 s (range, 10–165 s) and 3 s (range, 1–9 s) respectively; for guinea pigs 38 s (range, 10–288 s) and 5 s (range, 1–9 s), respectively. During development, the duration of long intervals decreased while the number of short intervals increased for both species. The earliest embryonic motility in the human and guinea pig is performed cyclically with distinct developmental milestones. The resemblance of their interval development offers promising possibilities to use the guinea pig as a noninvasive animal model of external influences on motor and neural development. © 2011 Wiley Periodicals, Inc. Develop Neurobiol, 2012
Sprache
Englisch
Identifikatoren
ISSN: 1932-8451
eISSN: 1932-846X
DOI: 10.1002/dneu.20945
Titel-ID: cdi_proquest_miscellaneous_1024477035
Format
–
Schlagworte
Animals
,
Embryonic Development - physiology
,
embryonic movement
,
Female
,
Guinea Pigs - embryology
,
Humans
,
Models, Animal
,
Movement - physiology
,
Pregnancy
,
prenatal motility
,
Species Specificity
,
ultrasonography
,
Ultrasonography, Prenatal - methods
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