ARTICLE INFO

Article Type

Original Research

Authors

Soufi Abadi   M. (1)
HaghdoostYazdi   H. (*)
Abbasnezhad   A.A. (2)
Amoli   N. (3)
Ghadimi   F. (3)






(*) Physiology Department, Medicine Faculty, Qazvin University of Medical Sciences, Qazvin, Iran
(1) Physiology Department, Medicine Faculty, Qazvin University of Medical Sciences, Qazvin, Iran
(2) Basic Sciences Department, Medicine Faculty, Gonabad University of Medical Sciences, Gonabad, Iran
(3) Anestetist Department, Paramedical Faculty, Qazvin University of Medical Sciences, Qazvin, Iran

Correspondence

Address: Physiology Department, Medicine Faculty, Qazvin University of Medical Sciences, Shahid Bahonar Boulevard, Qazvin, Iran
Phone: +982813336001
Fax: +982813324971
hhaghdoost@yahoo.com

Article History

Received:   October  20, 2013
Accepted:   March 6, 2014
ePublished:   April 1, 2014

ABSTRACT

Aims Due to different types of stress, it is important to recognize its adverse effects on the nervous system. This study was done to investigate the effect of three types of common stresses in modern living environment i.e. electromagnetic waves, immobilization and disturbance, individually and combined on pain threshold in infant rats.
Materials & Methods In this experimental study, 40 pregnant female Sprague rats and all their male infants were studied. Female rats were divided into 5 control, electromagnetic stress, immobilization stress, disturbance stress and combined stress groups. From eighth day of gestation, pregnant rats of stress groups were exposed to stress for 10 consecutive days. 75 days postpartum (after maturity), male rats were subjected to formalin pain test. Measuring the pain intensity was done via scale "zero" (putting the feet on the ground completely), "1" (putting the paw on the ground), "2" (raising the feet) and "3" (biting or licking the feet). Data were analyzed using one-way ANOVA and Tukey's post hoc tests.
Findings The mean of pain severity at the acute phase of the formalin test between each stress groups and the control group was not significant (p>0.05). The mean of pain severity of the interphase stage of the formalin test was significant only between the electromagnetic stress and the control groups (p<0.05). The mean of pain severity at the chronic stage of formalin test was significant between each of the combined stress (p<0.01) and the immobility stress (p<0.05) groups and the control group.
Conclusion Stress during pregnancy affects the pain behavior of the mature rats.


CITATION LINKS

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