the objective of the study was to compare pharmacokinetic and pharmacodynamic parameters of gliclazide after administration of immediate (ir) and modified release (mr) tablets. the experiment included rats with both normoglyceamia and streptozocin (stz)-induced hyperglyceamia. several mr formulations were designed and in vitro drug release profile was assessed by a dissolution test. for the fur...

background: the fundamental principles of internal targeted alpha therapy for cancer were established many decades ago.the high linear energy transfer (let) of alpha radiation to the targeted cancer cellscauses double strand breaks in dna. at the same time, the short range radiation spares adjacent normal tissues. this targeted approach complements conventional external beam radiotherapy and ch...

The chemical shift sensitivity and significant signal enhancement afforded by laser-polarized 129Xe have motivated the application of 129Xe NMR to biological imaging and spectroscopy. Recent research done by our group has used laser-polarized 129Xe in biomolecular assays that detect ligand-binding events and distinguish protein conformations. The successful application of unfunctionalized and f...

RNA interference (RNAi), an effective technique for regulating or silencing specific genes, can be applied to treat various diseases. Multiple clinical trials using RNAi are ongoing, and molecular imaging can serve as a powerful tool in RNAi-based therapies. This brief review will highlight the current progress on in vivo imaging of RNAi delivery and silencing effects. Incorporation of suitable...

The molecular charge of fluorescent bioprobes has recently received much attention due to its influence on cellular uptake. Herein, we demonstrate the effect of the molecular charge of glucose bioprobes on their GLUT-specific cellular uptake. We also applied GB2-Cy3 to in vivo imaging in the zebrafish model.

Indocyanine green (ICG) is widely used in medical imaging and testing. Its complex spectral behavior and low quantum yield limits some applications. We show that proximity of ICG to a metallic silver particle increases its intensity approximately 20-fold and decreases the decay time. Since the rate of photobleaching is not increased, our results suggest that ICG-silver particle complexes can yi...

The combination of two-photon in vivo imaging and genetic labeling of specific cell types in the mouse brain is a powerful method to refine our understanding of brain circuitry and to dissect the contribution of specific neural classes to cortical function. The synthetic calcium indicators are the best fluorescent reporters for cellular activity that are presently available but their spectral p...