Colloidal gold was used as a marker for immunoelectron microscopy to localize lactoferrin (LF) and myeloperoxidase (MPO) in human peripheral blood neutrophils. Cells were reacted with monospecific antibodies against LF or MPO and then with gold-labeled antiglobulin. MPO cytochemistry was also associated with immunologic detection of LF. Immunologic labeling of thin sections after embedding in g...

The functional capacity of lactoferrin (IF) to act as a negative feedback regulator of myelopoiesis has been investigated and shown to depend on the structure of the molecule itself and on the presence and absence of agents that can modulate its activity. LF has a specific requirement for iron (Fe) in terms of its functional capacity and is most effective in inhibiting the production of granulo...

Bacillus anthracis synthesizes two toxins composed of the three proteins: protective antigen (PA), lethal factor (LF), and edema factor (EF). The cleavage of PA on the cell surface by the convertase furin leads to the translocation of LF and EF into the cytosol. We have investigated the cross-inhibitory activities of the furin inhibitors hexa-d-arginine amide (D6R) and nona-d-arginine amide (D9...

Trichomonas vaginalis produces soluble factors that have been reported to have the ability to damage target cells in vitro, and it has been hypothesized that these factors may play a role in the pathogenesis of human trichomoniasis. A lytic factor (LF) was purified from T. vaginalis, and the molecular characteristics of LF were determined. T. vaginalis extract was subjected to hydrophobic chrom...

Lactoferrin (LF) is an iron-binding glycoprotein contained in milk and other exocrine fluids, and is believed to have multiple biological functions. We investigated the intracellular dynamics of LF taken up by three lines of human enterocytes and the subsequent release of internalized LF by using two-site ELISA and confocal microscopy. LF taken up by Caco-2 cells was kept partially intact withi...

The line field (LF) design choice for the lateral image formation mechanism (lateral format) has historically been a fraction of whole optical coherence tomography (OCT) field. However, as OCT technology develops, parallelised acquisition LF-OCT formats (LF-time domain (TD)-OCT, LF-spectral (SD)-OCT, LF-swept source (SS)-OCT) offers benefits and capabilities, which may mean it is now becoming m...