geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Effects of fracture trauma, estrone treatment, and 2-G environment on the epiphyseal cartilage zones of developing avian radii


, : Effects of fracture trauma, estrone treatment, and 2-G environment on the epiphyseal cartilage zones of developing avian radii. Aviation, Space, and Environmental Medicine 49(10): 1219-1224

Female birds subjected to closed fracture of the right radius at 2 weeks post-hatching were allowed to heal for 14 d at either earth gravity (1 G) or a 2-G hypergravity state, with saline-injected controls and 0.2- and 0.4-mg estrone (estrogen) treated groups. Animals were sacrificed following the last injection and radii were routinely processed histologically for micrometer measurements of the mid-coronal height and width of the cartilage zones of the proximal and distal epiphyses. Proximal epiphyses of estrone-treated, normo-gravity chicks showed a decreased growth in height of the articular, proliferating, and hypertrophic cartilage zones and an increased interstitial growth of the hypertrophic and calcified layers of estrone-treated, 2-G animals. Growth in height of the cartilage layers of the distal epiphyses of fractured radii was primarily stimulated when estrone-treated chicks were also exposed to the 2-G state. Appositional growth of all cartilage layers of the proximal and distal epiphyses of normo-gravity birds was increased by 0.2 mg estrone. In addition, growth in the width of all cartilage layers of the distal epiphyses of 2-G animals was increased with the administration of 0.4 mg estrone.

US$29.90

PMID: 708351


Other references

Mugler, A., 1959: A little known humoral disorder in gout patients: hyperoxalemia. La Presse Medicale 67(32): 1309-1311

Anderson, J.A.; Leonard, D.A.; Cusack, K.P.; Frye, L.L., 1995: 15-substituted lanosterols: post-transcriptional suppressors of 3-hydroxy-3-methylglutaryl coenzyme A reductase. The oxolanosterol oxime 3-beta-hydroxylanost-7-en-15-one 15-oxime and the structurally similar 3-beta-hydroxylanost-7-en-15-one are dual-action inhibitors of cholesterol synthesis which cause both inhibition of lanosterol 14-alpha-methyl demethyla...

Koy, A.; Waldhaus, A.; Hammen, H-Werner.; Wendel, U.; Mayatepek, E.; Schadewaldt, P., 2008: Urinary excretion of pentose phosphate pathway-associated polyols in early postnatal life. Two new inborn errors in the pentose phosphate pathway have been described: ribose-5-isomerase deficiency and transaldolase deficiency. These defects are characterized by accumulation of specific polyols in body fluids. Little is known about human...

Moro Alan; Mezga Aleksandar; Cosovic Vlasta, 2005: Depositional environments of Cenomanian limestones with rudists and dinosaur tracks, Istria, Croatia. International Congress on Rudists - Abstracts and Post-Congress Field Guide 7: 52-53

Rajesh, K.; Jackman, A.P.; Dandekar, A.M.; Mcdonald, K.A., 1999: Expression of trichosanthin in transgenic tobacco plants and suspension cultures. Abstracts of Papers American Chemical Society 217(1-2): BIOT 023

Chertovitskiy, A.; Bazarov, A., 2002: Current issues in rational and efficient use of land resources. A review of the existing definitions of rational and efficient use of land resources in Russian science is given. These are maximum involvement of land resources in economy, best use, reproduction and preservation of the resource; rational balance...

Viegas, A.P., 1945: Some fungi of Brazil. V. Basidiomycetes-Auriculariales. This further instalment of the author's critically annotated list of Brazilian fungi includes, inter alia, Helicobasidium compactum on Inga sp., Hybanthm atropurpureus, and Urtica sp., Septobasidium castaneum associated with an undetermined i...

Omotosho, T.B.; Rogers, R.G., 2009: Shortcomings/strengths of specific sexual function questionnaires currently used in urogynecology: a literature review. Pelvic floor disorders are common and although not life-threatening, have a significant impact on a patient's quality of life. Sexual health is an essential component of a women's overall well-being. In clinical practice and research it...

Starzl, T.E., 1988: International Organ Transplant Forum honoring Thomas E. Starzl for his 25 years of contribution to the field of organ transplantation. September 8-11, 1987, Pittsburgh, Pennsylvania, USA. Transplantation Proceedings 20(1 Suppl 1): 1-1107

Williamson, R.; Le-Bouguenec, C.; Gutmann, L.; Horaud, T., 1985: 1 or 2 low affinity penicillin binding proteins may be responsible for the range of susceptibility of enterococcus faecium to benzylpenicillin. Three benzylpenicillin-resistant, clinical isolates of E. faecium (MIC [minimum inhibitory concentration] values 16-64 .mu.g ml-1) contained 6 penicillin-binding proteins (PBP), of which PBP5 was the most abundant and had the lowest affinity for t...