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001-es BibID:	BIBFORM004323
Első szerző:	Balogh Lajos
Cím:	Absorption, uptake and tissue affinity of high-molecular-weight hyaluronan after oral administration in rats and dogs / Lajos Balogh, Andras Polyak, Domokos Mathe, Reka Kiraly, Juliana Thuroczy, Marian Terez, Gyozo Janoki, Yaoting Ting, Luke R. Bucci, Alexander G. Schauss
Dátum:	2008
Megjegyzések:	The purpose of this study was to determine the absorption, distribution and excretion of (99m)technetium-labeled, high-molecular-weight hyaluronan (((99m)Tc-HA) and (99m)technetium pertechnetate ((99m)Tc-P) after single dose, oral administration to Wistar rats and Beagle dogs. A pilot study utilized (99m)Tc-HA alone, and a second confirmatory study compared uptake of labeled (99m)Tc-HA with (99m)Tc-P. Urinary and fecal excretion after (99m)Tc-HA ingestion by rats showed 86.7-95.6% of radioactivity was recovered, almost all in feces. All tissues examined showed incorporation of radioactivity from (99m)Tc-HA starting at 15 min and persisting for 48 h, in a pattern significantly different from (99m)Tc-P. Whole-body scintigraphs and close-ups of the ventral chest region showed nonalimentary radioactivity from (99m)Tc-HA concentrated in joints, vertebrae and salivary glands four hours after administration. Autoradiography of skin, bone and joint tissue pieces after 24 h showed incorporation of radioactivity from (99m)Tc-HA, but not from (99m)Tc-P. Conversely, absorption, distribution and excretion of (99m)Tc was completely different from (99m)Tc-HA, showing an expected pattern of rapid absorption and excretion in urine, with accumulation in thyroid glands, stomach, kidney and bladder. This report presents the first evidence for uptake and distribution to connective tissues of orally administered, high-molecular-weight HA.
Tárgyszavak:	Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:	Journal of Agricultural and Food Chemistry. - 56 : 22 (2008), p. 10582-10593. -
További szerzők:	Polyák András Máthé Domokos Király Réka Thuróczy Julianna Márián Teréz (1950-) (radiobiológus) Jánoki Győző Ting, Yaoting Bucci, R. Luke Schauss, Alexander G.
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