Long-lasting, selective, anxiogenic effects of feline predator stress in mice
Lasting increases in anxiety-like behavior (ALB) are produced by brief exposure of rats to a cat [Adamec RE, Shallow T, Lasting effects on rodent anxiety of a single exposure to a cat, Physiol. Behav., 54 (1993) 101–109.]. Mice also respond defensively to natural predator stimuli. Moreover, chronic exposure of mice to rat odor has immediate […]
Effect of Predatory Stress on Sucrose Intake and Behavior on the Plus-Maze in Male Mice
In this study, the effect of the exposure of male mice to sensory stimuli from rats was assessed on both sucrose intake and the elevated plus-maze tests. CDl male mice were trained in the sucrose intake task (the prestress phase) and, subsequently, distributed into two groups. The stressed group was accommodated in the same room […]
Effects of individual housing on behavior and resistance to Ehrlich tumor growth in mice
This study analyzed in Balb/C mice the effects of individual housing on behavior, serum corticosterone and resistance to Ehrlich tumor growth. Mice (60 days old) were individually (IH) or grouped housed (G) (10–12 animals/cage) for 14–21 days. The 1st day of the housing condition was considered experimental day 1 (ED1). Results showed that on ED21, […]
Systemic administration of diarylpropionitrile (DPN) or phytoestrogens does not affect anxiety-related behaviors in gonadally intact male rats
The development of highly selective agonists for the two major subforms of the estrogen receptor (ER[alpha] and ER[beta]) has produced new experimental methodologies for delineating the distinct functional role each plays in neurobehavioral biology. It has also been suggested that these compounds might have the potential to treat estrogen influenced behavioral disorders, such as anxiety […]
Adrenal Activity and Anxiety-like Behavior in Fur-Chewing Chinchillas (Chinchilla lanigera)
Due to its complexity, in combination with a lack of scientific reports, fur-chewing became one of the most challenging behavioral problems common to captive chinchillas. In the last years, the hypothesis that furchewing is an abnormal repetitive behavior and that stress plays a role in its development and performance has arisen. Here, we investigated whether […]