Ontogeny of 5-aminolevulinic dehydratase and porphobilinogen deaminase activities in the yolk sac membrane and liver of chick embryos

1. Chick embryos of 7, 9, 11, 12, 13, 14, 15, 17 and 19 d of embryonic development were examined to determine the activities of 5-aminolevulinic dehydratase (ALA-D, EC 4.2.1.24) and porphobilinogen deaminase (PBG-D, EC 4.3.1.8). 2. Liver and yolk sac membrane ALA-D specific activities showed a maxim...

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Autores principales: Pauza, Noemí Laura, Sopena de Kracoff, Yolanda Elvira, Ferramola, Ana María, Sancovich, Horacio Alberto
Publicado: 2002
Materias:
porphobilinogen deaminase
porphobilinogen synthase
age
animal
article
chick embryo
enzymology
growth, development and aging
liver
metabolism
prenatal development
spectrophotometry
yolk sac
Age Factors
Animals
Chick Embryo
Hydroxymethylbilane Synthase
Liver
Porphobilinogen Synthase
Spectrophotometry
Yolk Sac
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00071668_v43_n2_p196_Pauza
http://hdl.handle.net/20.500.12110/paper_00071668_v43_n2_p196_Pauza
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00071668_v43_n2_p196_Pauza
record_format dspace
spelling paper:paper_00071668_v43_n2_p196_Pauza2023-06-08T14:31:39Z Ontogeny of 5-aminolevulinic dehydratase and porphobilinogen deaminase activities in the yolk sac membrane and liver of chick embryos Pauza, Noemí Laura Sopena de Kracoff, Yolanda Elvira Ferramola, Ana María Sancovich, Horacio Alberto porphobilinogen deaminase porphobilinogen synthase age animal article chick embryo enzymology growth, development and aging liver metabolism prenatal development spectrophotometry yolk sac Age Factors Animals Chick Embryo Hydroxymethylbilane Synthase Liver Porphobilinogen Synthase Spectrophotometry Yolk Sac 1. Chick embryos of 7, 9, 11, 12, 13, 14, 15, 17 and 19 d of embryonic development were examined to determine the activities of 5-aminolevulinic dehydratase (ALA-D, EC 4.2.1.24) and porphobilinogen deaminase (PBG-D, EC 4.3.1.8). 2. Liver and yolk sac membrane ALA-D specific activities showed a maximum between 12 and 13 d of embryonic development, yolk sac membrane PBG-ase activity a maximum at 9 d and at 7 d in liver. Total activities of ALA-D and PBG-D were not constant during the course of embryonic development but probably related to the changes of intensity of haem synthesis. 3. ALA-D and PBG-ase activities were higher in yolk sac membrane than in liver, showing the importance of the yolk sac membrane as erythropoietic tissue. PBG-D catalysed the rate-limiting reaction of the cytosolic steps in the biosynthetic pathway in both tissues. Fil:Pauza, N.L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Sopena De Kracoff, Y.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Ferramola De Sancovich, A.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Sancovich, H.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2002 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00071668_v43_n2_p196_Pauza http://hdl.handle.net/20.500.12110/paper_00071668_v43_n2_p196_Pauza
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic porphobilinogen deaminase
porphobilinogen synthase
age
animal
article
chick embryo
enzymology
growth, development and aging
liver
metabolism
prenatal development
spectrophotometry
yolk sac
Age Factors
Animals
Chick Embryo
Hydroxymethylbilane Synthase
Liver
Porphobilinogen Synthase
Spectrophotometry
Yolk Sac
spellingShingle porphobilinogen deaminase
porphobilinogen synthase
age
animal
article
chick embryo
enzymology
growth, development and aging
liver
metabolism
prenatal development
spectrophotometry
yolk sac
Age Factors
Animals
Chick Embryo
Hydroxymethylbilane Synthase
Liver
Porphobilinogen Synthase
Spectrophotometry
Yolk Sac
Pauza, Noemí Laura
Sopena de Kracoff, Yolanda Elvira
Ferramola, Ana María
Sancovich, Horacio Alberto
Ontogeny of 5-aminolevulinic dehydratase and porphobilinogen deaminase activities in the yolk sac membrane and liver of chick embryos
topic_facet porphobilinogen deaminase
porphobilinogen synthase
age
animal
article
chick embryo
enzymology
growth, development and aging
liver
metabolism
prenatal development
spectrophotometry
yolk sac
Age Factors
Animals
Chick Embryo
Hydroxymethylbilane Synthase
Liver
Porphobilinogen Synthase
Spectrophotometry
Yolk Sac
description 1. Chick embryos of 7, 9, 11, 12, 13, 14, 15, 17 and 19 d of embryonic development were examined to determine the activities of 5-aminolevulinic dehydratase (ALA-D, EC 4.2.1.24) and porphobilinogen deaminase (PBG-D, EC 4.3.1.8). 2. Liver and yolk sac membrane ALA-D specific activities showed a maximum between 12 and 13 d of embryonic development, yolk sac membrane PBG-ase activity a maximum at 9 d and at 7 d in liver. Total activities of ALA-D and PBG-D were not constant during the course of embryonic development but probably related to the changes of intensity of haem synthesis. 3. ALA-D and PBG-ase activities were higher in yolk sac membrane than in liver, showing the importance of the yolk sac membrane as erythropoietic tissue. PBG-D catalysed the rate-limiting reaction of the cytosolic steps in the biosynthetic pathway in both tissues.
author Pauza, Noemí Laura
Sopena de Kracoff, Yolanda Elvira
Ferramola, Ana María
Sancovich, Horacio Alberto
author_facet Pauza, Noemí Laura
Sopena de Kracoff, Yolanda Elvira
Ferramola, Ana María
Sancovich, Horacio Alberto
author_sort Pauza, Noemí Laura
title Ontogeny of 5-aminolevulinic dehydratase and porphobilinogen deaminase activities in the yolk sac membrane and liver of chick embryos
title_short Ontogeny of 5-aminolevulinic dehydratase and porphobilinogen deaminase activities in the yolk sac membrane and liver of chick embryos
title_full Ontogeny of 5-aminolevulinic dehydratase and porphobilinogen deaminase activities in the yolk sac membrane and liver of chick embryos
title_fullStr Ontogeny of 5-aminolevulinic dehydratase and porphobilinogen deaminase activities in the yolk sac membrane and liver of chick embryos
title_full_unstemmed Ontogeny of 5-aminolevulinic dehydratase and porphobilinogen deaminase activities in the yolk sac membrane and liver of chick embryos
title_sort ontogeny of 5-aminolevulinic dehydratase and porphobilinogen deaminase activities in the yolk sac membrane and liver of chick embryos
publishDate 2002
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00071668_v43_n2_p196_Pauza
http://hdl.handle.net/20.500.12110/paper_00071668_v43_n2_p196_Pauza
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