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Experimental enteritis produced by high environmental temperature

T Tòth1, A Fenyvesi, I Klemm

  • 1Department of Pathology, Medical Center Senta, Yugoslavia.

Journal of Pediatric Surgery
|February 1, 1993
PubMed
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Elevated environmental temperatures induced necrotizing enteritis-like changes in Wistar rats. Specific heat treatments showed protective effects, suggesting temperature modulation for preventing intestinal injury.

Area of Science:

  • Veterinary Pathology
  • Animal Physiology
  • Environmental Medicine

Background:

  • Elevated environmental temperatures can induce significant physiological stress in animals.
  • Necrotizing enteritis is a serious condition affecting animal health and productivity.
  • Understanding the mechanisms of heat-induced intestinal damage is crucial for developing preventative strategies.

Purpose of the Study:

  • To investigate the effects of elevated environmental temperature on Wistar rats.
  • To characterize the pathological changes in the intestine following heat exposure.
  • To evaluate the efficacy of specific thermal treatments in mitigating heat-induced enteritis.

Main Methods:

  • Groups of Wistar rats with varying body weights were exposed to elevated environmental temperatures.

Related Experiment Videos

  • Histopathological examination was performed to identify intestinal lesions.
  • Animals were subjected to a treatment protocol involving intermittent heat exposure and rest periods at specific temperatures (45°C, 56°C).

    • Main Results:

    • Necrotizing enteritis-like changes were observed in up to 85% of heat-exposed rats.
    • The most effective treatment involved 20 minutes at 45°C, 20 minutes rest, and 20 minutes at 56°C.
    • Initial cellular events included subnuclear vacuolization of enterocytes, followed by epithelial shedding and stromal infiltration.

    Conclusions:

    • Elevated environmental temperature is a significant risk factor for developing necrotizing enteritis-like conditions in Wistar rats.
    • A specific intermittent heat exposure protocol demonstrated a protective effect against intestinal damage.
    • Mesenteric blood flow alterations may play a critical role in the pathogenesis of these heat-induced lesions.