Prior surgical implantation of a venous catheter sensitized rats to coldimmobilization stress. Three of six catheterized females succumbed during the stress. The remaining rats fell into two groups in terms of their core temperature at the end of the stress period: Male uncatheterized rats had higher temperatures than rats in the other three groups. No relation was found between catheter patency and magnitude of hypothermia. Degree of gastric disease paralleled the core temperature findings in that the male uncatheterized rats had significantly fewer gastric erosions than the rats in the other three groups. Additionally, a robust effect of gender was found with uncatheterized females showing more hypothermia and more gastric disease than uncatheterized males. A subsequent experiment was conducted to evaluate whether anesthesia or wearing the protective spring was responsible in part for the sensitization seen. Here, the gender difference was less although females consistently averaged lower core temperatures after stress than did males. Despite similar core temperatures after stress, females that were prepared with the protective spring apparatus developed more gastric disease than female controls or similarly treated males. Thus, the additional sensitization exhibited by females in the first experiment may relate to the fact that both catheterization and the taping procedure were sensitizers while only catheterization was a sensitizer for males.
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Supported by VA medical research funds and by contract no. DAMD17-80-C-0166 from the U.S. Army.
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Natelson, B.H., Ferrara-Ryan, M., Creighton, D. et al. An analysis of some sensitizing agents in the pathogenesis of stress-induced gastric erosive disease. Pav. J. Biol. Sci. 19, 195–199 (1984). https://doi.org/10.1007/BF03004517
- Core Temperature
- Gastric Disease
- Gastric Erosion
- Taping Procedure
- Catheter Patency