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Cellular effects of image diagnostic ultrasound on murine spermatogenesis monitored by flow cytometry
Abstract:
A study has been carried out to evaluate the possible cellular effects induced by image diagnostic ultrasound on murine spermatogenetic cells. Exposure to ultrasound was carried out using a commercial diagnostic instrument that operates in B-mode. Male hybrid F1 mice, aged 8-10 weeks, were exposed to ultrasound for 30 min and observed from 7 to 35 days after treatment. Flow cytometric analysis has been used to monitor the relative frequency of the different types of spermatogenetic cells. This analytical approach showed changes in cell frequency in the compartment containing elongated spermatids which was used as an endpoint. A statistically significant decrease in the frequency of this cell type was observed 21, 28 and 35 days after exposure. These changes suggest that there may be a cytotoxic and/or cytostatic effect on spermatocytes and spermatogonia. These results showed that image diagnostic ultrasound induces effects on murine spermatogenesis at cellular level and that the flow cytometric approach makes it possible to identify quantitative cellular changes with reference to specific cell type.
Insights
Diagnostic ultrasound imaging may impact male reproductive cells. This study found that ultrasound exposure caused a decrease in specific sperm cells in mice, indicating potential cellular effects on spermatogenesis.
Area of Science:
- Reproductive Biology
- Cell Biology
- Biophysics
Background:
- Diagnostic ultrasound is widely used in medical imaging.
- Potential cellular effects of diagnostic ultrasound, particularly on reproductive systems, require thorough investigation.
- Spermatogenesis is a complex process sensitive to external factors.
Purpose of the Study:
- To evaluate the cellular effects of diagnostic ultrasound on murine spermatogenetic cells.
- To determine if ultrasound exposure impacts the frequency of specific sperm cell types.
- To assess the utility of flow cytometry in detecting ultrasound-induced changes in spermatogenesis.
Main Methods:
- Murine spermatogenetic cells were exposed to diagnostic ultrasound (B-mode) for 30 minutes.
- Mice were observed for 7 to 35 days post-exposure.
- Flow cytometry was employed to quantify the relative frequencies of different spermatogenetic cell types, focusing on elongated spermatids.
Main Results:
- A statistically significant decrease in elongated spermatids was observed 21, 28, and 35 days after ultrasound exposure.
- These findings suggest potential cytotoxic or cytostatic effects on spermatocytes and spermatogonia.
- Flow cytometry effectively identified quantitative cellular changes in specific spermatogenetic cell populations.
Conclusions:
- Image diagnostic ultrasound can induce cellular-level effects on murine spermatogenesis.
- The study highlights the sensitivity of spermatogenesis to ultrasound exposure.
- Flow cytometry is a valuable tool for assessing ultrasound-induced alterations in reproductive cell populations.