MDCK cells, when examined by low-light level video microscopy displayed an endogenous
fluorescence with two differing patterns. A low intensity emission which was punctate and …

Previous studies by our laboratory have suggested the potential role of receptor-mediated
endocytosis components in the cellular translocation of riboflavin (vitamin B2). To delineate …

The present study examined riboflavin (RF) uptake by isolated rabbit renal brush border
membrane (BBM). RF uptake was linear for up to 30 s and leveled off thereafter reaching an …

This study addresses the transport mechanism of riboflavin (vitamin B2) across intestinal
epithelium in the presence and absence of pharmacologically active compounds. A …

The existence of a membrane-associated uptake carrier for riboflavin (RF) is demonstrated
in Xenopus oocytes. Uptake of low (0.017 μM) and high (3 μM) concentrations of RF was …

In several mammalian species there is evidence which suggests that riboflavin is
transported bidirectionally through the renal tubules (1). At low plasma riboflavin …

The role of riboflavin in cell maintenance and growth, and the mechanism by which it is
absorbed into various human tissues and cell lines has been extensively studied over the …

Uptake of luminal riboflavin (RF) into the absorptive cells of rabbit small intestine was
examined using purified brush border membrane vesicle (BBMV) preparations. These …

Cell surface receptors for the vitamins folic acid and biotin have been previously reported to
mediate the endocytosis of vitamin-conjugated macromolecules into cultured cells. To …

The first step of riboflavin absorption was studied by determining the uptake of the vitamin by
rat small intestinal brush border membrane vesicles. Vesicles were incubated at 25° C in the …