Effects of pre and postnatal 2450 MHz continuous wave (CW) radiofrequency radiation on thymus: Four generation exposure
Abstract
Effects of pre and postnatal 2450 MHz continuous wave (CW) radiofrequency radiation on thymus: Four generation exposure Fazile Cantürk Tan, Betül Yalçin, Arzu Hanım Yay, Burak Tan, Korkut Yeğin, Süleyman Daşdağ. Effects of pre and postnatal 2450 MHz continuous wave (CW) radiofrequency radiation on thymus: Four generation exposure. Electromagn Biol Med. 2022 May 30;1-10. doi: 10.1080/15368378.2022.2079673. Abstract This study aims to investigate the effects of pre- and postnatal 2450 MHz continuous wave (CW) radiofrequency radiation (RFR) on the thymus of rats spanning four generations. Four groups; sham, irradiated female, irradiated male, irradiated male and female, each consisting of four rats (one male and three females), were created. During the experiment, rats in the exposure groups were whole-body exposed to 2450 MHz CW-RFR for 12 h/day. Irradiation started one month before the fertilization in the experimental group. When the offspring were two months old, four rats, one male and three female, were allocated for the second-generation study. The remaining offspring were sacrificed under general anesthesia, and their thymuses were removed. The same procedure was applied to the next generation. Two months after the second generation gave birth, third- generation rats were decapitated, and their thymuses were removed. In all groups, cortex, medulla and resident cells could be clearly distinguished in the second and third generations. No differences were observed between the control and two experimental groups, defined as irradiated female and irradiated male. In contrast, vascularization was observed in the thymus of the fourth-generation offspring of the group where both males and females were irradiated. The number of offspring and mass of all rats decreased in the third-generation group. Pre-and postnatal 2450 MHz continuous wave radiofrequency radiation exposure may potentially affect the thymus of future generations. pubmed.ncbi.nlm.nih.gov
AI evidence extraction
Main findings
Across the second and third generations, thymus cortex, medulla, and resident cells were clearly distinguishable and no differences were observed between control and the irradiated-female or irradiated-male groups. Vascularization was reported in the thymus of fourth-generation offspring when both males and females were irradiated. The number of offspring and mass of all rats decreased in the third-generation group.
Outcomes measured
- Thymus histology (cortex/medulla/resident cells)
- Thymus vascularization
- Number of offspring
- Body mass
Limitations
- Small group size (four rats per group)
- SAR/dosimetry details not reported in the abstract
- Limited outcome detail in the abstract (e.g., quantitative histology measures not provided)
- Unclear which specific comparisons correspond to reported decreases in offspring number and body mass
View raw extracted JSON
{
"publication_year": 2022,
"study_type": "animal",
"exposure": {
"band": "RF",
"source": null,
"frequency_mhz": 2450,
"sar_wkg": null,
"duration": "12 h/day; started 1 month before fertilization; continued pre- and postnatally across four generations"
},
"population": "Rats (four-generation breeding study)",
"sample_size": 16,
"outcomes": [
"Thymus histology (cortex/medulla/resident cells)",
"Thymus vascularization",
"Number of offspring",
"Body mass"
],
"main_findings": "Across the second and third generations, thymus cortex, medulla, and resident cells were clearly distinguishable and no differences were observed between control and the irradiated-female or irradiated-male groups. Vascularization was reported in the thymus of fourth-generation offspring when both males and females were irradiated. The number of offspring and mass of all rats decreased in the third-generation group.",
"effect_direction": "mixed",
"limitations": [
"Small group size (four rats per group)",
"SAR/dosimetry details not reported in the abstract",
"Limited outcome detail in the abstract (e.g., quantitative histology measures not provided)",
"Unclear which specific comparisons correspond to reported decreases in offspring number and body mass"
],
"evidence_strength": "low",
"confidence": 0.7399999999999999911182158029987476766109466552734375,
"peer_reviewed_likely": "yes",
"stance": "concern",
"stance_confidence": 0.66000000000000003108624468950438313186168670654296875,
"summary": "This four-generation rat study examined pre- and postnatal whole-body exposure to 2450 MHz continuous-wave radiofrequency radiation for 12 hours per day. The authors report no thymus histology differences in the second and third generations for groups with only male or only female irradiation, but report thymus vascularization in fourth-generation offspring when both parents were irradiated. Decreases in offspring number and body mass were also reported in the third generation, and the authors conclude effects may occur in future generations.",
"key_points": [
"Animal study assessing multi-generational (four-generation) effects of 2450 MHz CW radiofrequency exposure on the thymus.",
"Exposure was whole-body, 12 hours per day, beginning one month before fertilization and continuing pre- and postnatally.",
"Second and third generations showed no reported thymus differences versus control in the irradiated-female and irradiated-male groups.",
"Fourth-generation offspring showed thymus vascularization when both males and females were irradiated.",
"The number of offspring and body mass decreased in the third-generation group.",
"The abstract does not report SAR or detailed quantitative outcome measures."
],
"categories": [
"Animal Studies",
"Radiofrequency (RF)",
"Reproduction & Development",
"Immune System"
],
"tags": [
"2450 MHz",
"Continuous Wave",
"Whole-Body Exposure",
"Multi-Generational Exposure",
"Prenatal Exposure",
"Postnatal Exposure",
"Thymus",
"Vascularization",
"Offspring Number",
"Body Mass",
"Rat Study"
],
"keywords": [
"2450 MHz",
"continuous wave",
"radiofrequency radiation",
"RFR",
"thymus",
"rats",
"four generation",
"pre- and postnatal",
"whole-body exposure",
"vascularization",
"offspring",
"body mass"
],
"suggested_hubs": [],
"social": {
"tweet": "Rat study of four-generation 2450 MHz continuous-wave RF exposure (12 h/day) reports no thymus differences in 2nd/3rd generations for single-parent irradiation, but thymus vascularization in 4th-generation offspring when both parents were irradiated; offspring number and body mass decreased in the 3rd generation.",
"facebook": "A four-generation rat study examined pre- and postnatal whole-body exposure to 2450 MHz continuous-wave radiofrequency radiation (12 h/day). The authors report no thymus histology differences in the 2nd and 3rd generations for groups with only male or only female irradiation, but report thymus vascularization in 4th-generation offspring when both parents were irradiated, along with decreased offspring number and body mass in the 3rd generation.",
"linkedin": "Electromagn Biol Med (2022): Four-generation rat study of pre- and postnatal whole-body 2450 MHz continuous-wave RF exposure (12 h/day). Reported findings include no thymus histology differences in 2nd/3rd generations for single-parent irradiation, thymus vascularization in 4th-generation offspring when both parents were irradiated, and decreased offspring number and body mass in the 3rd generation."
}
}
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