Microwaves and cellular immunity. II. Immunostimulating effects of microwaves and naturally occurring antioxidant nutrients.

Bioelectrochemistry and bioenergetics (Lausanne, Switzerland) · 1999 · Benefit · Low evidence

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BenefitLow evidencePaper 6350

Study snapshot

PublicationBioelectrochemistry and bioenergetics (Lausanne, Switzerland) · 1999

Study typeanimal

Reported directionBenefit

Evidence ratingLow

Abstract

The effect of 8.15-18 GHz (1 Hz within) microwave radiation at a power density of 1 microW/cm2 on the tumor necrosis factor (TNF) production and immune response was tested. A single 5 h whole-body exposure induced a significant increase in TNF production in peritoneal macrophages and splenic T cells. The mitogenic response in T lymphocytes increased after microwave exposure. The activation of cellular immunity was observed within 3 days after exposure. The diet containing lipid-soluble nutrients (beta-carotene, alpha-tocopherol and ubiquinone Q9) increased the activity of macrophages and T cells from irradiated mice. These results demonstrate that irradiation with low-power density microwaves stimulates the immune potential of macrophages and T cells, and the antioxidant treatment enhances the effect of microwaves, in particular at later terms, when the effect of irradiation is reduced.

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AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeanimal

Effect directionbenefit

Populationmice

Sample sizeNot supplied

Exposuremicrowave · single 5 h whole-body exposure

Evidence strengthLowConfidence: 78% · Peer reviewed: yes

Main findings

Microwave radiation at 8.15–18 GHz and 1 microW/cm2 for a single 5 h whole-body exposure increased TNF production in peritoneal macrophages and splenic T cells, increased mitogenic response in T lymphocytes, and was associated with activation of cellular immunity within 3 days. A diet containing beta-carotene, alpha-tocopherol, and ubiquinone Q9 increased activity of macrophages and T cells from irradiated mice and was reported to enhance the microwave effect at later times.

Outcomes measured

tumor necrosis factor (TNF) production
immune response
mitogenic response in T lymphocytes
activity of peritoneal macrophages
activity of splenic T cells
activation of cellular immunity

Limitations

Sample size not reported in the abstract.
No SAR reported; exposure characterized by frequency range and power density only.
Animal study; generalizability to humans is not established in the abstract.
Details on controls, randomization/blinding, and statistical methods are not provided in the abstract.
Timing and duration of follow-up beyond 'within 3 days' and 'later terms' are not specified in the abstract.

View raw extracted JSON

{
  "study_type": "animal",
  "exposure": {
    "band": "microwave",
    "source": null,
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": "single 5 h whole-body exposure"
  },
  "population": "mice",
  "sample_size": null,
  "outcomes": [
    "tumor necrosis factor (TNF) production",
    "immune response",
    "mitogenic response in T lymphocytes",
    "activity of peritoneal macrophages",
    "activity of splenic T cells",
    "activation of cellular immunity"
  ],
  "main_findings": "Microwave radiation at 8.15–18 GHz and 1 microW/cm2 for a single 5 h whole-body exposure increased TNF production in peritoneal macrophages and splenic T cells, increased mitogenic response in T lymphocytes, and was associated with activation of cellular immunity within 3 days. A diet containing beta-carotene, alpha-tocopherol, and ubiquinone Q9 increased activity of macrophages and T cells from irradiated mice and was reported to enhance the microwave effect at later times.",
  "effect_direction": "benefit",
  "limitations": [
    "Sample size not reported in the abstract.",
    "No SAR reported; exposure characterized by frequency range and power density only.",
    "Animal study; generalizability to humans is not established in the abstract.",
    "Details on controls, randomization/blinding, and statistical methods are not provided in the abstract.",
    "Timing and duration of follow-up beyond 'within 3 days' and 'later terms' are not specified in the abstract."
  ],
  "evidence_strength": "low",
  "confidence": 0.78,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "microwave radiation",
    "8.15-18 GHz",
    "power density 1 microW/cm2",
    "whole-body exposure",
    "mice",
    "tumor necrosis factor",
    "TNF",
    "peritoneal macrophages",
    "splenic T cells",
    "T lymphocytes",
    "mitogenic response",
    "cellular immunity",
    "beta-carotene",
    "alpha-tocopherol",
    "ubiquinone Q9",
    "antioxidants"
  ],
  "suggested_hubs": []
}

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

Identifiers and source

DOI: 10.1016/s0302-4598(99)00059-8
PubMed: 10619446

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