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Updated: Jul 12, 2026
04:38
Assessment of Sexual Behavior of Male Mice
Published on: March 5, 2020
Mouse complement: influence of sex hormones on its activity
Science (New York, N.Y.)
|May 6, 1966
Summary
Sex hormones significantly impact the complement system
Area of Science:
- Immunology
- Endocrinology
- Biochemistry
Background:
- The complement system is crucial for innate immunity.
- Sex hormones are known to modulate various physiological processes.
- Previous research suggests a link between hormones and immune function.
Purpose of the Study:
- To investigate the influence of sex hormones on complement component activity.
- To determine the specific effects of testosterone and estrogen on late-acting complement components.
Main Methods:
- Complement component titers were measured in male and female mice.
- Mice underwent castration and subsequent hormone treatment (testosterone and estrogen).
- In vitro hormone treatment of mouse serum was performed.
Main Results:
- Male mice had higher complement titers than females, which decreased after castration.
- Female mice showed increased titers post-castration.
- Testosterone administration elevated late-acting complement activity, while estrogen decreased it.
- In vitro hormone treatment did not alter complement activity.
Conclusions:
- Sex hormones, particularly testosterone and estrogen, play a significant role in regulating late-acting complement components in mice.
- These hormonal effects appear to be mediated through in vivo mechanisms rather than direct in vitro action.
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