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Dietary Zinc Restriction and Chronic Restraint Stress Affect Mice Physiology, Immune Organ Morphology, and Liver Function

  • 0Department of Neurobiology, Maj Institute of Pharmacology, Polish Academy of Sciences, ul. Smętna 12, 31-343 Kraków, Poland.
Nutrients +

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November 27, 2024

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November 27, 2024

View abstract on PubMed

Summary

This summary is machine-generated.

Chronic stress and zinc deficiency negatively impact organ health, affecting immune organs and the intestines. This study reveals their combined effects on metallothionein, oxidative stress, and mineral balance in mice.

Area Of Science

  • Neuroscience
  • Immunology
  • Nutritional Science

Background

  • Zinc deficiency and chronic stress are linked to depressive symptoms.
  • Investigating the interplay between these factors is crucial for understanding mental health.
  • C57Bl/6J mice models offer insights into physiological and biochemical responses.

Purpose Of The Study

  • To explore the relationship between zinc deficiency and chronic stress.
  • To examine their combined physiological and biochemical effects on various organs.
  • To elucidate the impact on metallothionein expression, oxidative stress, and mineral homeostasis.

Main Methods

  • Four experimental groups: control, stress, zinc restriction, and combined.
  • Organ weight, histological analysis (liver, intestine), and biochemical assays were performed.
  • Evaluated metallothioneins, zinc transporters, oxidative stress markers, and mineral concentrations.

Main Results

  • Both zinc restriction and chronic stress induced structural changes in intestines and immune organs.
  • Metallothionein expression, oxidative stress markers (TBARS, SOD, GSH-Px), and liver mineral (Zn, Fe, Cu) levels were altered.
  • Specific zinc transporters (ZIP1, ZIP4) in the jejunum were affected.

Conclusions

  • Dietary zinc restriction and chronic stress significantly impact organ structure and function.
  • These factors disrupt metallothionein expression and oxidative stress balance.
  • Homeostasis of iron and copper in the liver is compromised under these conditions.

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