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Usability of the hypoosmotic swelling "Water-test"--a simple method to assess sperm membrane integrity in mouse
1Department of Embryology and Medical Genetics, Collegium Medicum, Jagiellonian University, Kraków, Poland.
Abstract:
The functional integrity of the membrane of sperm from 3 strains of mice (BALB/c, CBA/KW, and C57BL/KW) was assessed by studying the swelling reaction of the sperm when suspended in a medium of distilled water. The results were correlated with analysis of sperm motility and those of Eosin-Y staining. The results obtained from the Eosin-Y test and "Water-test" differed (P < 0.01) between strains C57BL/KW and both BALB/C, and CBA/KW. A good correlation was observed in all strains of mice between the values of the "Water-test" and those for Eosin-Y staining (P < 0.01).
Insights
Mouse sperm membrane integrity was assessed using a water swelling test and Eosin-Y staining. Significant differences were found between mouse strains, with good correlation between the two methods for evaluating sperm viability.
Area of Science:
- Reproductive biology
- Spermatozoa membrane integrity
- Animal models
Background:
- Sperm membrane integrity is crucial for male fertility.
- Assessing sperm viability is essential in reproductive research and diagnostics.
- Different mouse strains may exhibit variations in sperm characteristics.
Purpose of the Study:
- To evaluate the functional integrity of sperm membranes in three different mouse strains (BALB/c, CBA/KW, C57BL/KW).
- To compare the efficacy of the "Water-test" (sperm swelling in distilled water) with Eosin-Y staining for assessing sperm viability.
- To investigate the correlation between sperm swelling response, motility, and Eosin-Y staining across different mouse strains.
Main Methods:
- Sperm samples from BALB/c, CBA/KW, and C57BL/KW mice were analyzed.
- Sperm membrane integrity was assessed using a "Water-test" measuring swelling in distilled water.
- Sperm motility and Eosin-Y staining were concurrently evaluated for comparison.
Main Results:
- Significant differences (P < 0.01) in Eosin-Y staining and "Water-test" results were observed between the C57BL/KW strain and the BALB/C and CBA/KW strains.
- A strong positive correlation (P < 0.01) was found between the "Water-test" results and Eosin-Y staining across all tested mouse strains.
- Sperm motility analysis provided complementary data to membrane integrity assessments.
Conclusions:
- The "Water-test" serves as a reliable indicator of sperm membrane integrity, correlating well with Eosin-Y staining.
- Mouse strain significantly influences sperm membrane functional integrity.
- These findings support the use of the "Water-test" as a valuable tool in reproductive studies and for assessing sperm viability in different mouse models.