Postnatal growth of fibres on M. gracilis (pars caudalis) in both sexes of rat
Autor(a) principal: | |
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Data de Publicação: | 1982 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/230810 |
Resumo: | Measurements of cross sectional area on individual fibres of M. gracilis (pars caudalis) of Wistar rats of both sexes of different ages were done. Growth equations pattern and growth rates equations pattern of each muscle fibre type were also determined. In rats 12 days old, muscle fibres present a somewhat uniform SDH activity. By 23 days and thereafter, SDH technique revealed a mixed population of red, intermediate and white fibres. There was a close relationship between cross sectional area and age, where each fibre type presents a distinct exponential growth curve pattern. The highest growth rates were observed at 23 and 45 days. After this age, a marked fall in growth rates occurs, except for white fibres, where this decrease was less intense. Red and intermediate muscle fibers tend to stabilize their growth earlier than white fibres. |
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Postnatal growth of fibres on M. gracilis (pars caudalis) in both sexes of ratMeasurements of cross sectional area on individual fibres of M. gracilis (pars caudalis) of Wistar rats of both sexes of different ages were done. Growth equations pattern and growth rates equations pattern of each muscle fibre type were also determined. In rats 12 days old, muscle fibres present a somewhat uniform SDH activity. By 23 days and thereafter, SDH technique revealed a mixed population of red, intermediate and white fibres. There was a close relationship between cross sectional area and age, where each fibre type presents a distinct exponential growth curve pattern. The highest growth rates were observed at 23 and 45 days. After this age, a marked fall in growth rates occurs, except for white fibres, where this decrease was less intense. Red and intermediate muscle fibers tend to stabilize their growth earlier than white fibres.Dept. Morphol., State Univ. 'Julio de Mesquita Filho', Botucatu, Sao PauloUniversidade Estadual Paulista (UNESP)Dall Pai, V.Costa, I. R.D.S.Curi, P. R.2022-04-29T08:42:14Z2022-04-29T08:42:14Z1982-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article53-59Anatomischer Anzeiger, v. 152, n. 1, p. 53-59, 1982.0003-2786http://hdl.handle.net/11449/2308102-s2.0-0020423437Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAnatomischer Anzeigerinfo:eu-repo/semantics/openAccess2022-04-29T08:42:14Zoai:repositorio.unesp.br:11449/230810Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-29T08:42:14Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Postnatal growth of fibres on M. gracilis (pars caudalis) in both sexes of rat |
title |
Postnatal growth of fibres on M. gracilis (pars caudalis) in both sexes of rat |
spellingShingle |
Postnatal growth of fibres on M. gracilis (pars caudalis) in both sexes of rat Dall Pai, V. |
title_short |
Postnatal growth of fibres on M. gracilis (pars caudalis) in both sexes of rat |
title_full |
Postnatal growth of fibres on M. gracilis (pars caudalis) in both sexes of rat |
title_fullStr |
Postnatal growth of fibres on M. gracilis (pars caudalis) in both sexes of rat |
title_full_unstemmed |
Postnatal growth of fibres on M. gracilis (pars caudalis) in both sexes of rat |
title_sort |
Postnatal growth of fibres on M. gracilis (pars caudalis) in both sexes of rat |
author |
Dall Pai, V. |
author_facet |
Dall Pai, V. Costa, I. R.D.S. Curi, P. R. |
author_role |
author |
author2 |
Costa, I. R.D.S. Curi, P. R. |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Dall Pai, V. Costa, I. R.D.S. Curi, P. R. |
description |
Measurements of cross sectional area on individual fibres of M. gracilis (pars caudalis) of Wistar rats of both sexes of different ages were done. Growth equations pattern and growth rates equations pattern of each muscle fibre type were also determined. In rats 12 days old, muscle fibres present a somewhat uniform SDH activity. By 23 days and thereafter, SDH technique revealed a mixed population of red, intermediate and white fibres. There was a close relationship between cross sectional area and age, where each fibre type presents a distinct exponential growth curve pattern. The highest growth rates were observed at 23 and 45 days. After this age, a marked fall in growth rates occurs, except for white fibres, where this decrease was less intense. Red and intermediate muscle fibers tend to stabilize their growth earlier than white fibres. |
publishDate |
1982 |
dc.date.none.fl_str_mv |
1982-12-01 2022-04-29T08:42:14Z 2022-04-29T08:42:14Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Anatomischer Anzeiger, v. 152, n. 1, p. 53-59, 1982. 0003-2786 http://hdl.handle.net/11449/230810 2-s2.0-0020423437 |
identifier_str_mv |
Anatomischer Anzeiger, v. 152, n. 1, p. 53-59, 1982. 0003-2786 2-s2.0-0020423437 |
url |
http://hdl.handle.net/11449/230810 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Anatomischer Anzeiger |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
53-59 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1797789442216296448 |