Microglia are neuroimmune cells that respond to and affect events in the central nervous system in many species. Objectively monitoring and quantitating their response (activation) to pharmacological treatment is one challenge facing modern neuroscience. We applied methods based on fractal theory to analyze the morphology of cultured rat microglia exposed to activating and inhibiting stimuli. The box counting dimension (DB) quantitated lipopolysaccharide's activating effects as an increase in the mean DB and shift in its distribution and naloxone's inhibiting effects as a decrease in the mean DB and shift in distribution. The DB quantitated naloxone's obvious effects but also its visually undetectable effects on cells that do not appear to enter the activation sequence. In general, the results suggest that these discriminating capacities of the DB may be a powerful tool for gauging microglial activation in areas such as incipient or ongoing responses associated with disease and drug use.
|Number of pages||11|
|Journal||Complexity international : an electronic journal of complex systems research|
|Publication status||Published - 2008|