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R E PRIEST

Publications and source records attributed to R E PRIEST.

At least 19 recordsLinked to original sources

REDIFFERENTIATION OF CONNECTIVE TISSUE CELLS IN SERIAL CULTURE.

When cell cultures are initiated from aortic connective tissue of rats and maintained as monolayers on glass, the differentiated property of collagen production disappears. However, these same cells, when placed in diffusion chambers in the peritoneal cavities of other rats, produce collagen, as indicated both morphologically and by the accumulation of hydroxy-proline within the chambers.

Aorta↗

Inhibition of synthesis of sulfated mucopolysaccharides by estradiol.

The influence of estradiol upon incorporation of isotopes into the sulfated acid mucopolysaccharides of connective tissues of the rat has been studied. Administration of the hormone for 3 weeks significantly reduces the in vitro incorporation of S(35)-sulfate into cartilage and thoracic aorta without significantly altering the amount of hydrolyzable sulfate in these tissues. The reduction of sulfate incorporation into these tissues by estradiol represents reduced synthesis since the hormone reduces incorporation of sulfate into the acid mucopolysaccharides of the tissue to the same extent and since reduction in incorporation of C(14)-glucose also parallels S(35)-sulfate incorporation into acid mucopolysaccharides. The rate of synthesis of sulfated acid mucopolysaccharides is greater in thoracic aorta than abdominal aorta or cartilage. Since the amount of hydrolyzable sulfate is the same in these two portions of aorta, the turnover is also more rapid in the thoracic aorta.

Animals↗

Tracheotomy.

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Humans↗

Estradiol reduces incorporation of radioactive sulfate into cartilage and aortas of rats.

Estradiol in large amounts reduces the incorporation of radioactive sulfate into cartilage and aortas of rats. This reduction becomes apparent within 3 days for cartilage and 3 weeks for aorta. The effect is not mediated through suppression of testosterone secretion and the hypophysis is not necessary for the effect to be demonstrated. The thoracic segment of aortas from normal rats incorporates more sulfate than does the abdominal segment and this difference is reduced following the administration of estradiol.

Animals↗