Effect of rosemary (Rosmarinus officinalis) extract on the biodistribution of 99mTc sulphur colloid and on the radiolabeled blood constituents

AbstractWith this study we evaluated the effects of the herb rosemary (Rosmarinus officinalis L. Lamiaceae) extract on the labeling of blood constituents with technetium- 99m (99mTc) labeled sulphur colloid and on the biodistribution of 99mTc-Sulphur Colloid in Wistar albino rats. For this purpose, two groups of animals (male wistar rats, 130–140g) were treated (1mL) with a rosemary extract (750mg/kg body wt.,n=9) and water (control, n=9) separately by gavage for five days. 99mTc-Sulphur Colloid was administrated by intravenous injection; organs/tissues were withdrawn and weighted. Blood was centrifuged, plasma and blood cells were isolated. The radioactivity was counted to calculate the percentage of activity per gram for each organ/tissue and percentage of activity in blood cells and plasma. A signii cant increase (p