Poikilocytotic forms caused by hyperthermia and heat stroke- experimental study on Wistar rats


  • Emina Dervisevic Department of Forensic Medicine, University of Sarajevo, Sarajevo, Bosnia and Herzegovina http://orcid.org/0000-0002-9673-4820
  • Muhamed Katica Department of Pathophysiological Physiology of Domestic Animals, University of Sarajevo, Sarajevo, Bosnia and Herzegovina
  • Sabaheta Hasić Department of Medicinal Biochemistry, University of Sarajevo, Sarajevo, Bosnia and Herzegovina
  • Anes Jogunčić Department of Epidemiology, Public Health Institute of Canton Sarajevo, Sarajevo, Bosnia and Herzegovina
  • Lejla Dervišević Department of Anatomy, University of Sarajevo, Sarajevo, Bosnia and Herzegovina
  • Haris Vukas Department of Forensic Medicine, University of Sarajevo, Sarajevo, Bosnia and Herzegovina
  • Adis Salihbegović Department of Vascular surgery, Cantonal Hospital Zenica, Zenica, Bosnia and Herzegovina




Antemortem, Experimental, Heat stress, Poikilocytosis, Postmortem, Rats


Background: The aim of the study was to find out what happens to erythrocytes and their forms during life and after death as a result of high water temperature.

Methods: Heat stress was used on a rat model.to investigate the effects of different temperature intensities (37°C and 44°C) and exposure time (20 min and until the time of death) on erythrocyte morphology. Total of 23 Wistar rats were divided into two groups: 37°C as control group and 44°C as trial groups. The trial groups were classified into antemortem the exposure time of 20 min and postmortem groups exposure time until fatal outcome. The anaesthetised rats were exposed to preheated water using the water bath. May-Grünwald-Giemsa colouring technique was applied on blood samples taken from the abdominal aorta.

 Results: Exposure of Wistar rats to water temperature in groups KG37 and G44 led to a significant changes in core temperature. In the control group, the thermoregulatory mechanism established normothermia, and in G44 hyperthermia was detected during 20 minutes of exposure. The frequency of heat stroke in group G44 was 43.8%. Target cells and anulocytes were predominant in antemortem group at 44°C, while anulocytes and spherocytes in postmortem groups 44°C, respectively. Dacryocytes with spherocytes were significantly higher in postmortem group 44°C than in antemortem group 44°C (p=0.002, p=0.017, respectively).

Conclusions: Poikilocytosis is associated with the exposure length and temperature intensity. Following a fatal outcome dacryocytes with spherocytes at 44°C were significantly more than in corresponding antemortem groups.

Author Biography

Emina Dervisevic, Department of Forensic Medicine, University of Sarajevo, Sarajevo, Bosnia and Herzegovina

Department of Forensic Medicine



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How to Cite

Dervisevic, E., Katica, M., Hasić, S., Jogunčić, A., Dervišević, L., Vukas, H., & Salihbegović, A. (2022). Poikilocytotic forms caused by hyperthermia and heat stroke- experimental study on Wistar rats. International Journal of Research in Medical Sciences, 10(6), 1225–1231. https://doi.org/10.18203/2320-6012.ijrms20221476



Original Research Articles