[The effects of extremely low frequency electromagnetic field exposure on the pH of the adult male semen and the motoricity parameters of spermatozoa in vitro].

PAPER pubmed Zhonghua lao dong wei sheng zhi ye bing za zhi = Zhonghua laodong weisheng zhiyebing zazhi = Chinese journal of industrial hygiene and occupational diseases 2012 In vitro study Effect: harm Evidence: Low

Read original paper → PMID: 22804883 Evidence Lab

Abstract

OBJECTIVE: To study the effects of 50-Hz extremely low frequency electromagnetic field (ELF-EMF) exposure on the pH of the adult male semen and the motoricity and motoricity parameters of spermatozoa. METHODS: Healthy adult male fresh semen was exposed to a 50-Hz EMF at 0.4 mT for 15, 30 and 60 min, respectively. The pH value of the semen, the motoricity and motoricity parameter of spermatozoa were detected and recorded in real time using the WLJY-9000 pattern chromatic color spermatozoa quality detection system. RESULTS: Compared with parallel control group, the exposure of adult male fresh semen to a 50-Hz EMF at 0.4 mT for 15 min or 60 min could decrease significantly the motoricity (spermatozoa with a + b lever) and the activity ratio (spermatozoa with a + b + c lever)(P < 0.01). However, there were no significant differences of motoricity and the activity ratio between exposure group and control group (P > 0.05), and after exposure to a 50-Hz. EMF for 30 min the motoricity and the activity ratio of exposure group were inhibited, as compared with control group (P < 0.01 or P < 0.05). The pH value of the semen was not obvious changed (P > 0.05) when semen was exposed to a 50-Hz EMF of 0.4 mT for 15, 30 and 60 min. CONCLUSION: In present experiment, it is suggested that the exposure of adult male fresh semen to a 50-Hz EMF in vitro could inhibit the motoricity and the activity ratio, but not affect the pH value of the semen within 60 min.

AI evidence extraction

At a glance

Study type

In vitro study

Effect direction

harm

Population

Healthy adult male fresh semen (in vitro)

Sample size

—

Exposure

ELF · 0.05 MHz · 15, 30, and 60 min

Evidence strength

Low

Confidence: 74% · Peer-reviewed: yes

Main findings

Compared with a parallel control group, exposure to a 50-Hz EMF at 0.4 mT for 15 min or 60 min significantly decreased sperm motility (a+b level) and activity ratio (a+b+c level) (P<0.01). Semen pH was not significantly changed after 15, 30, or 60 min exposure (P>0.05).

Outcomes measured

Semen pH
Sperm motility (motoricity; a+b level)
Sperm activity ratio (a+b+c level)
Sperm motility parameters (unspecified)

Limitations

In vitro semen exposure; may not reflect in vivo effects
Sample size not reported in abstract
Some results reporting is unclear/inconsistent for the 30 min exposure comparison

Suggested hubs

occupational-exposure (0.35)
Published in an industrial hygiene/occupational diseases journal and involves ELF-EMF exposure conditions.

View raw extracted JSON

{
    "study_type": "in_vitro",
    "exposure": {
        "band": "ELF",
        "source": null,
        "frequency_mhz": 0.05000000000000000277555756156289135105907917022705078125,
        "sar_wkg": null,
        "duration": "15, 30, and 60 min"
    },
    "population": "Healthy adult male fresh semen (in vitro)",
    "sample_size": null,
    "outcomes": [
        "Semen pH",
        "Sperm motility (motoricity; a+b level)",
        "Sperm activity ratio (a+b+c level)",
        "Sperm motility parameters (unspecified)"
    ],
    "main_findings": "Compared with a parallel control group, exposure to a 50-Hz EMF at 0.4 mT for 15 min or 60 min significantly decreased sperm motility (a+b level) and activity ratio (a+b+c level) (P<0.01). Semen pH was not significantly changed after 15, 30, or 60 min exposure (P>0.05).",
    "effect_direction": "harm",
    "limitations": [
        "In vitro semen exposure; may not reflect in vivo effects",
        "Sample size not reported in abstract",
        "Some results reporting is unclear/inconsistent for the 30 min exposure comparison"
    ],
    "evidence_strength": "low",
    "confidence": 0.7399999999999999911182158029987476766109466552734375,
    "peer_reviewed_likely": "yes",
    "keywords": [
        "extremely low frequency",
        "ELF-EMF",
        "50 Hz",
        "0.4 mT",
        "semen",
        "sperm motility",
        "activity ratio",
        "pH",
        "in vitro"
    ],
    "suggested_hubs": [
        {
            "slug": "occupational-exposure",
            "weight": 0.34999999999999997779553950749686919152736663818359375,
            "reason": "Published in an industrial hygiene/occupational diseases journal and involves ELF-EMF exposure conditions."
        }
    ]
}

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AI-extracted fields are generated from the abstract/metadata and may be incomplete or incorrect. This content is for informational purposes only and is not medical advice.

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