scholarly journals Retinoic acid given at late embryonic stage depresses sonic hedgehog and Hoxd-4 expression in the pharyngeal area and induces skeletal malformation in flounder (Paralichthys olivaceus) embryos

1999 ◽  
Vol 41 (2) ◽  
pp. 143-152 ◽  
Author(s):  
Tohru Suzuki ◽  
Ichiro Oohara ◽  
Tadahide Kurokawa
Keyword(s):  
Retinoic Acid ◽  
Sonic Hedgehog ◽  
Paralichthys Olivaceus ◽  
Embryonic Stage ◽  
Skeletal Malformation ◽  
Pharyngeal Area ◽  
Late Embryonic Stage

A redescription of the nematode Oncholaimus vesicarius (Wieser, 1959) and observations on the pigment spots of this species and of Oncholaimus skawensis Ditlevsen, 1921

1971 ◽  
Vol 49 (8) ◽  
pp. 1193-1197 ◽  
Author(s):  
H. Nelson ◽  
J. M. Webster ◽  
A. H. Burr
Keyword(s):  
The Body ◽  
Embryonic Stage ◽  
Red Pigment ◽  
Male Tail ◽  
Local Populations ◽  
Late Embryonic Stage

Oncholaimus vesicarius (Wieser, 1959) n. comb., is described and is differentiated from O. oxyuris (Wieser, 1953) n. comb., by the marked constriction of the body at the anus and by the medial position of the midventral, caudal setose papillae and gubernaculum in the male. It is differentiated from O. steinböcki by the shape and length of the male tail and from O. skawensis by the shorter, stouter tail in both sexes, the very prominent midventral caudal papillae, and the relative proportions of the tail and spicules in the male. Local populations of O. vesicarius and O. skawensis are consistently separated by the color of the anterior pigment spots. The anterior red pigment spots of O. skawensis appear in the late embryonic stage of the unhatched egg and before the appearance of the diffuse brown oesophageal pigment in the oesophageal muscle.

scholarly journals Axial (HNF3β) and retinoic acid receptors are regulators of the zebrafish sonic hedgehog promoter

1997 ◽  
Vol 16 (13) ◽  
pp. 3955-3964 ◽  
Author(s):  
Bei-En Chang ◽  
Patrick Blader ◽  
Nadine Fischer ◽  
Philip W. Ingham ◽  
Uwe Strähle
Keyword(s):  
Retinoic Acid ◽  
Sonic Hedgehog ◽  
Retinoic Acid Receptors

scholarly journals The Sexual Effect of Chicken Embryos on the Yolk Metabolites and Liver Lipid Metabolism

Animals ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 71
Author(s):  
Peng Ding ◽  
Yueyue Tong ◽  
Shu Wu ◽  
Xin Yin ◽  
Huichao Liu ◽  
...  
Keyword(s):  
Lipid Metabolism ◽  
Chicken Embryo ◽  
Fatty Acid Synthase ◽  
Acid Metabolism ◽  
Embryonic Stage ◽  
Male And Female ◽  
Chicken Embryos ◽  
Significant Difference ◽  
Late Embryonic Stage ◽  
Female Chicken

The metabolic processes of animals are usually affected by sex. Egg yolk is the major nutrient utilized for the growth and development of a chicken embryo. In this study, we explored the differences of yolk metabolites in male and female chicken embryos by LC–MS/MS. Furthermore, we investigated the mRNA expression of lipoprotein lipase (LPL) and fatty acid synthase (FAS) in chicken embryo liver with different sexes in different embryonic stages. The results showed that the nutrient metabolites in the yolk of female chickens were mainly related to lipid metabolism and amino acid metabolism in the early embryonic stage, and vitamin metabolism in the late embryonic stage. The male yolk metabolites were mainly associated with lipid metabolism and nucleic acid metabolism in the early developmental stage, and amino acids metabolism in the late embryonic stage. There was no significant difference in the expression of LPL or FAS in livers of male and female chicken embryos at different embryonic stages. Our results may lead to a better understanding of the sexual effect on yolk nutrient metabolism during chicken embryonic development.

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