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Related Experiment Videos

Decrease of testosterone level during an experimental African trypanosomiasis: involvement of a testicular LH

B Soudan1, D Tetaert, A Racadot

  • 1Unité INSERM No 16, Lille, France.

Acta Endocrinologica
|July 1, 1992
PubMed
Summary

African trypanosomiasis, or sleeping sickness, causes gonadal disorders in rats. The disease significantly reduces luteinizing hormone (LH) and testosterone, impacting testicular LH receptors and Leydig cell function, potentially due to stress.

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Area of Science:

  • Parasitology
  • Endocrinology
  • Reproductive Biology

Background:

  • African trypanosomiasis (sleeping sickness) is a parasitic disease with potential systemic effects.
  • Gonadal dysfunction is a recognized complication, but underlying mechanisms require further elucidation.
  • Stress responses may contribute to disease pathology.

Purpose of the Study:

  • To investigate gonadal disorders and testicular LH receptor changes in rats with African trypanosomiasis.
  • To assess the impact of the disease on hormone levels and Leydig cell function.
  • To explore the role of stress in trypanosomiasis-induced gonadal imbalance.

Main Methods:

  • Experimental infestation of rats with Trypanosoma brucei brucei.
  • Measurement of serum LH, testosterone, corticosterone, glucose, and transaminases.

Related Experiment Videos

  • Quantification of testicular LH receptors and assessment of hCG-stimulated testosterone response.

    • Main Results:

    • Infested rats showed significantly decreased serum LH and testosterone levels.
    • A reduction in testicular LH receptor number and responsiveness to hCG was observed.
    • Increased equilibrium association constant (Ka) of remaining LH receptors and elevated corticosterone levels indicated stress.

    Conclusions:

    • African trypanosomiasis induces gonadal dysfunction in rats, characterized by hormonal imbalance and impaired testicular function.
    • Stress associated with parasitic infection appears to be a contributing factor to Leydig cell dysfunction.
    • Findings highlight the complex interplay between parasitic disease, endocrine disruption, and stress response.