Dynamics of blood pressure in healthy rats at rest and after stress

Igosheva, Natalia B.; Janson, Natalia B.; Balanov, Alexander G.; Romanova, Tatiana P.; Glushkovskaja-Semjachkina, Oksana V.; Anishchenko, Tatiana G.; Anishchenko, Vadim S.
February 2000
AIP Conference Proceedings;2000, Vol. 502 Issue 1, p168
Academic Journal
We study the dynamics of arterial blood pressure in freely moving healthy rats and rats with heart injuries caused by severe stress. Sequences of return times extracted from blood pressure signals and return times maps are analyzed. Different types of behavior of return times are classified in healthy rats at rest. Dynamics of return times of healthy rats and rats with stress-induced heart damages differs significantly. The general effect of stress is the increase of amplitude of return times variations and the increase of their degree of order. One of the often observed consequences of stress is the change of the ratio between the heart and respiration frequencies. © 2000 American Institute of Physics.


Related Articles

  • Modernization, stress, and blood pressure: New directions in research. Dressler, William W. // Human Biology;Aug99, Vol. 71 Issue 4, p583 

    Presents a theoretical framework within which to study the relationship of modernization, stress, and blood pressure. Orientation on stress models that are culturally appropriate in intracultural diversity within local populations.

  • Pressor reactions to psychological stress and prediction of future blood pressure: Data from the... Carroll, Douglas; Smith, George Davey // BMJ: British Medical Journal (International Edition);3/25/95, Vol. 310 Issue 6982, p771 

    Examines whether reactions of blood pressure to psychological stress predict future blood pressure. Absence of an advantage by resting laboratory blood pressure over casual blood pressure; Absence of effect of blood pressure reaction in the etiology of hypertension. INSET: Key messages..

  • It Was 20 Years Ago Today…. Vickers, Montgomery // Review of Optometry;1/15/2011, Vol. 148 Issue 1, p26 

    The author reflects on the significance of laughter in writing his column "Chairside" at the journal "Review of Optometry" for 20 years in the U.S. He acknowledges the readers who have been reading his column, and is grateful for the opportunity of making them laugh. He states that laughing...

  • Using Humor in Our Daily Lives. Brassil, Donna F. // Urologic Nursing;Jun2002, Vol. 22 Issue 3, p144 

    Presents the definition of humor. Discussion on the psychological effects of humor and laughter; Effects of humor on the cortisol and endorphins; Influence of laughter on the decrease of stress hormones and blood pressure.

  • Lowdown on High Stress.  // H&HN: Hospitals & Health Networks;Jan99, Vol. 73 Issue 1, p77 

    Provides information on a study published in the November-December issue of `Psychosomatic Medicine,' on the relationship between a high-stress job and blood pressure. Details on the study.

  • Effects of spironolactone on systolic blood pressure in experimental diabetic rats. Liu, Yan-Jun; Nakagawa, Yuichi; Toya, Kazuhiko; Wang, Ying; Saegusa, Hirokazu; Nakanishi, Toshiki; Ohzeki, Takehiko // Kidney International;May2000, Vol. 57 Issue 5, p2064 

    Effects of spironolactone on systolic blood pressure in diabetic rats. Background. Mineralocorticoid hormones, which maintain electrolyte balance and blood pressure, are thought to be associated not only with the expression of renal 11β-hydroxysteroid dehydrogenase type 2 (11β-HSD2), but...

  • Attenuated adrenocorticotropic responses to psychological stress are associated with early smoking relapse. Al'Absi, Mustafa; Hatsukami, Dorothy; Davis, Gary L. // Psychopharmacology;Aug2005, Vol. 181 Issue 1, p107 

    Rationale: Research has demonstrated that psychosocial stressors increase smoking and risk for smoking relapse. Alterations in biological systems involved in the stress response caused by chronic smoking may contribute to early relapse. Objectives: We examined the extent to which...

  • Tempol in the Dorsomedial Hypothalamus Attenuates the Hypertensive Response to Stress in Rabbits. De Matteo, Robert; Head, Geoffrey A.; Mayorov, Dmitry N. // American Journal of Hypertension;Apr2006, Vol. 19 Issue 4, p396 

    Background: We have recently shown that microinjection of the superoxide dismutase mimetic tempol into the pressor region of the rostral ventrolateral medulla attenuates the cardiovascular response to mental (air-jet) stress in rabbits. In the present study, we examined the influence of tempol...

  • Long-term effects of repeated pregnancies (multiparity) on blood pressure regulation Dhawan, Vivek; Brookes, Zoe L.S.; Kaufman, Susan // Cardiovascular Research;Oct2004, Vol. 64 Issue 1, p179 

    Objective: Pregnancy is associated with profound alterations in the cardiovascular system, the long-term effects of which are unknown. Human epidemiological studies suggest that multiparity (multiple pregnancies) increases the risk of cardiovascular disease. The mechanisms underlying these...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics