Developmental changes in the levels of molecular species of triacylglycerol that contain docosahexaenoic acid in adipose tissue of the chick embryo

1996 ◽  
Vol 115 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Klara Farkas ◽  
Raymond C. Noble ◽  
Brian K. Speake
Keyword(s):  
Adipose Tissue ◽  
Chick Embryo ◽  
Docosahexaenoic Acid ◽  
Molecular Species ◽  
Developmental Changes

Preferential mobilisation of docosahexaenoic acid from adipose tissue triacylglycerol of the chick embryo

1996 ◽  
Vol 24 (2) ◽  
pp. 165S-165S ◽  
Author(s):  
SILVIA CEROLINI ◽  
BRIAN K. SPEAKE ◽  
ANDRE MALDJIAN ◽  
RAYMOND C. NOBLE
Keyword(s):  
Adipose Tissue ◽  
Chick Embryo ◽  
Docosahexaenoic Acid

scholarly journals Developmental changes in the type I procollagen processing pathway in chick-embryo cornea

1991 ◽  
Vol 276 (3) ◽  
pp. 777-784 ◽  
Author(s):  
S J Mellor ◽  
G L Atkins ◽  
D J S Hulmes
Keyword(s):  
Chick Embryo ◽  
Kinetic Model ◽  
Rate Constants ◽  
Collagen Fibril ◽  
Electrophoretic Analysis ◽  
Developmental Changes ◽  
Type I ◽  
Electron Microscopic ◽  
Type I Procollagen ◽  
Stage Of Development

Type I procollagen processing in chick-embryo corneas was studied at days 12, 14 and 17 of development. Pulse-chase experiments and electrophoretic analysis of salt-soluble extracts showed developmental changes in the processing pathway. A kinetic model was fitted to the data to determine rate constants for processing of both N- and C-propeptides. Data for pro alpha 1(I)-chain processing and pro alpha 2(I)-chain processing were fitted separately (where pro means procollagen). Between days 12 and 17 the relative flux through the pC-collagen (procollagen chain lacking the N-propeptide) and pN-collagen (procollagen chain lacking the C-propeptide) pathways increased approx. 4-fold. Pro alpha 1(I) chains and pro alpha 2(I) chains were processed by slightly different routes. Variations in the rate constants were compared with electron-microscopic measurements of collagen fibril diameters at each stage of development. Diameters increased by less than 10% over the period from 12 to 17 days. It was concluded that fibril diameters are relatively insensitive to the pathway of procollagen processing in the salt-soluble pool.

scholarly journals Lipidomic Adaptations in White and Brown Adipose Tissue in Response to Exercise Demonstrate Molecular Species-Specific Remodeling

Cell Reports ◽  
2017 ◽  
Vol 18 (6) ◽  
pp. 1558-1572 ◽  
Author(s):  
Francis J. May ◽  
Lisa A. Baer ◽  
Adam C. Lehnig ◽  
Kawai So ◽  
Emily Y. Chen ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Brown Adipose Tissue ◽  
Molecular Species ◽  
Brown Adipose ◽  
Species Specific ◽  
Response To Exercise

The changes in lectin activity during the development of embryonic chick skin

Development ◽  
1980 ◽  
Vol 59 (1) ◽  
pp. 59-69
Author(s):  
Kunio Kitamura
Keyword(s):  
Chick Embryo ◽  
Developmental Changes ◽  
Embryonic Chick ◽  
Dorsal Skin ◽  
Lectin Activity ◽  
Embryonic Skin ◽  
Mesenchymal Condensation ◽  
The Relationship

Changes in lectin activity during development of embryonic chick skin were studied. In the dorsal skin of the chick embryo in which feathers were formed, lectin activity first increased, during the period of dermal condensation, and then it decreased during the development of feathers. A similar change in lectin activity was also found in the anterior shank skin, the prospective scale region of the chick embryo. The embryonic cornea, in which no mesenchymal condensation took place, had lectin activity and did not show any developmental changes in lectin activity. Apteria regions of the dorsal skin, experimentally formed by treatment with hydrocortisone, gave low lectin activity. The lectin found in the embryonic skin showed specificity for lactose. The relationship found between lectin activity and dermal condensation in the embryonic chick skin is discussed.

Rapid changes in metabolic cold defense and GDP binding to brown adipose tissue mitochondria of rat pups

1993 ◽  
Vol 264 (5) ◽  
pp. R1017-R1023 ◽  
Author(s):  
G. Kortner ◽  
K. Schildhauer ◽  
O. Petrova ◽  
I. Schmidt
Keyword(s):  
Adipose Tissue ◽  
Brown Adipose Tissue ◽  
Time Course ◽  
Developmental Changes ◽  
Whole Body ◽  
Rat Pups ◽  
Brown Adipose ◽  
Rapid Changes ◽  
Whole Body Metabolism

To determine developmental changes of brown adipose tissue (BAT) thermogenic activity at defined circadian and thermal states, we evaluated the time course of cold-induced increases of in vitro guanosine 5'-diphosphate (GDP) binding in parallel with whole body metabolism (oxygen consumption, VO2) and core temperature (Tc) in 1- to 11-day-old rat pups. During the maximum phase of the juvenile diurnal cycle, Tc of littermates was recorded continuously and VO2 alternately until 2 min before animals were killed for removal of interscapular BAT. GDP binding after 1.5 h at thermoneutrality and its increase during physiologically comparable cold loads were significantly lower in 1-day-old pups than in 5- and 11-day-old pups. Cold defense was activated more rapidly in the older pups, but GDP binding in even the 1-day-old pups was significantly increased during the second 10-min period of cold exposure. We conclude that rapid changes in thermogenic activity, in connection with the known developmental changes in the dependence of the suckling rat's metabolic cold defense on maternal and sibling contact and circadian phase, will distort longitudinal studies of any fast-changing BAT parameter when the conditions immediately before tissue removal are not thoroughly controlled.

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