RF-040Original text reviewed

Sperm apoptosis and oxidative markers in a separate Chinese rat experiment

Liu et al. · 2015 · Reproductive Health

The reported finding

Sperm apoptosis increased from 11.51±0.53% to 22.47±1.83%; ROS rose and antioxidant capacity fell. Apoptosis-related proteins/transcripts changed. Overall sperm malformation percentage was not significantly different.

Reading it carefully

No mating or pregnancy outcome; sperm injury does not establish infertility. Holding-unit temperature is not organ/core thermometry; SAR uses a simplified model; blinding unestablished. Table 3 sperm-count significance appears inconsistent with its means and SEMs: do not rely on that count claim without clarification.

Inside the study

Exposure conditions

900 MHz, 50 Hz sinusoidal amplitude modulation, 100% index; 2 h/day for 50 days; power density 1±0.03 mW/cm² at 7 cm. Simplified prolate-spheroid whole-body SAR estimate 0.66±0.01 W/kg. Holding-unit temperature rise at most 0.07°C.

Design & controls

48 male Sprague-Dawley rats randomized 24 exposed/24 sham; identical holding units without RF for sham. Epididymal sperm assays; protein and mRNA assays n=15/group.

Statistics

Table 4, n=24/group, mean±SEM: ROS 53.00±1.89 versus 36.51±3.64; antioxidant capacity 4.80±0.12 versus 6.82±0.21. Authors mark P<.05 using t-tests.

Related research & shared cohorts

Huazhong Agricultural University/Wuhan experiment, separate from Newcastle sperm studies; not a standardized replication.

The protection question raised

Does the sperm-injury signal persist with stronger dose and temperature characterisation, and does it affect fertility? The unresolved sperm-count reporting inconsistency cannot strengthen the case without clarification.

Source verification

Original full methods, results, tables and disclosures reviewed using Scite and PMC XML.

Where to find the result

Exposure methods; Table 4; Figures 4-6. Table 3 needs reporting clarification.

Editorial notices

No editorial notice surfaced in the Scite/primary-record checks used for this record; this is not a comprehensive clean-bill certification.

Funding

China National citrus industry technology system programme CARS-27-05B, as reported.

Conflicts of interest

Authors declare no competing interests. Biofavor assisted Western blot analyses.

Original publication

Qi Liu; Tianlei Si; Xiaoyun Xu; Fuqiang Liang; Lufeng Wang; Siyi Pan. Electromagnetic radiation at 900 MHz induces sperm apoptosis through bcl-2, bax and caspase-3 signaling pathways in rats. Reproductive Health. 2015;12(1):65. doi:10.1186/s12978-015-0062-3.

Plain-text record