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Zur Akklimatisation von Laboratoriumsratten nach Ortswechsel unter besonderer Berücksichtigung der β- und γ-Globuline und der adrenalen Corticosteronkonzentrationen

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K. Gärtner, L. Stoll · 1972

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Laboratory rats need 50-100 days to fully adapt to environmental changes, showing that biological stress responses persist much longer than often assumed.

Plain English Summary

Summary written for general audiences

This 1972 study examined how laboratory rats adapt to environmental changes by measuring stress markers like blood proteins and adrenal hormones. Researchers found that rats needed 50-100 days to fully adapt to microbial environment changes, but only 7 days to adapt to social housing changes. The study established baseline stress response patterns that remain relevant for modern research protocols.

Why This Matters

While this study doesn't directly address EMF exposure, it provides crucial context for understanding how environmental stressors affect biological systems. The research demonstrates that even laboratory animals under controlled conditions show measurable physiological responses to environmental changes that persist for weeks or months. This is particularly relevant when evaluating EMF research, where similar stress markers like cortisol levels and immune system changes are often measured. The 50-100 day adaptation period the researchers documented suggests that short-term EMF studies may miss important long-term biological adjustments. When we see studies showing biological effects from EMF exposure lasting days or weeks, this foundational research reminds us that such responses represent genuine physiological stress, not just temporary fluctuations.

Exposure Information

Specific exposure levels were not quantified in this study.

Cite This Study
K. Gärtner, L. Stoll (1972). Zur Akklimatisation von Laboratoriumsratten nach Ortswechsel unter besonderer Berücksichtigung der β- und γ-Globuline und der adrenalen Corticosteronkonzentrationen.
Show BibTeX
@article{zur_akklimatisation_von_laboratoriumsratten_nach_ortswechsel_unter_besonderer_be_g4150,
  author = {K. Gärtner and L. Stoll},
  title = {Zur Akklimatisation von Laboratoriumsratten nach Ortswechsel unter besonderer Berücksichtigung der β- und γ-Globuline und der adrenalen Corticosteronkonzentrationen},
  year = {1972},
  
  
}

Quick Questions About This Study

The study found that rats required 50-100 days to completely acclimatize to changes in their microbial environment, as measured by blood protein levels and white blood cell counts returning to normal baseline values.
Researchers measured β- and γ-serum-globulins (blood proteins), white blood cell counts for microbial adaptation, and adrenal corticosterone levels (stress hormone) for social adaptation in the relocated animals.
When adult male rats were moved from individual cages to group housing, their adrenal corticosterone levels stabilized after just 7 days, indicating much faster social adaptation than microbial adaptation.
The researchers wanted to understand acclimatization reactions in laboratory animals to improve standardization of physical and chemical environments, recognizing that microbiological and social factors also cause measurable biological stress responses.
The researchers used germ-free rats that were then conventionalized (exposed to normal microbes) to study how animals adapt to changes in their microbial environment over extended time periods.