Association between estrus cycle-related aggression and tidal volume variability in female Wistar rats

Psychoneuroendocrinology
Lydia K MelchiorElias Eriksson

Abstract

Premenstrual dysphoria is characterized by symptoms such as irritability and depressed mood, present during the luteal phase of the menstrual cycle, and disappearing shortly after the onset of menstruation. Subjects with premenstrual dysphoria have previously been reported to display enhanced respiratory variability, and to experience anxiety when exposed to panicogens, such as CO2. In the present study, the possible influence of the estrus cycle and estrus cycle-related aggression on respiratory variability was investigated in female rats of the Wistar strain. The rats were subdivided into two groups: those displaying estrus cycle-related aggression, as evaluated using the resident intruder paradigm, and those not showing aggression throughout the estrus cycle. This model has been developed to serve as an animal model of premenstrual irritability. The former group was found to display higher tidal volume variability in diestrus, as compared to the non-aggressive rats. There was no effect of estrus cycle phase on respiratory variability. These results are well in line with the clinical observation that women with premenstrual dysphoria display higher respiratory variability than controls, and the notion that respiratory variabi...Continue Reading

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Aug 6, 2003·The International Journal of Neuropsychopharmacology·Kristina AnnerbrinkElias Eriksson

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Citations

Jun 10, 2014·Medical Science Monitor : International Medical Journal of Experimental and Clinical Research·Sheng WeiMing-qi Qiao
Aug 19, 2011·Zhong xi yi jie he xue bao = Journal of Chinese integrative medicine·Qing-fang Ge, Hui-yun Zhang
May 9, 2006·Hormones and Behavior·Magnus LöfgrenTorbjörn Bäckström

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