Non-ionizing electromagnetic fields (EMF).

Impact of non-ionizing electromagnetic fields on DNA and voltage-gated channels.

Non-ionizing electromagnetic fields (EMF), such as those emitted by mobile phones, Wi-Fi, power grids, and other everyday devices, can affect both DNA and voltage-gated ion channels (VGCCs, Nav, Kv, etc.) in cell membranes. While EMF do not have enough energy to directly damage DNA, as ionizing radiation does, they can induce indirect effects that alter cellular function, primarily through oxidative stress, changes in gene expression, and dysfunction of ion channels.

Mechanisms of DNA Damage

Non-ionising EMFs can generate oxidative stress, a key mechanism for indirect DNA damage. This oxidative stress increases the production of reactive oxygen species (ROS), which damage DNA bases and the sugar-phosphate chain, which can result in mutations and breaks in the DNA double helix. A common marker for this type of damage is 8-hydroxy-2-deoxyguanosine (8-OHdG). In addition, prolonged exposure to EMF can compromise DNA repair mechanisms, increasing the accumulation of genetic errors. Additionally, EMF may alter the expression of genes related to DNA repair, apoptosis (cell death) and cellular detoxification, reducing the body’s ability to repair damage and maintain genetic stability.

Effects on Voltage-Gated Ion Channels

Voltage-gated ion channels are membrane proteins that allow ions to pass through the membrane in response to changes in electrical voltage. These channels are essential for the proper functioning of excitable cells, such as neurons and muscle cells. Exposure to non-ionizing EMF can alter the function of these channels, causing cellular dysfunction and generating various clinical symptoms.

1.Voltage-Gated Calcium Channels (VGCCs)

VGCCs regulate the flow of calcium through cell membranes. Exposure to EMF can activate these channels, allowing an increased influx of intracellular calcium, which leads to several harmful effects:

• ROS Production: Excess calcium activates enzymes such as NADPH oxidase, which generates ROS, causing oxidative stress and cellular damage.
• Inflammation: Excess intracellular calcium can trigger the release of inflammatory cytokines, such as IL-6 and TNF-alpha, promoting a chronic inflammatory response.
• Mitochondrial Dysfunction: Excess calcium affects the mitochondria, disrupting energy production and generating more ROS, which contributes to cellular aging

2. Voltage-Gated Sodium Channels (Nav)

Sodium channels are essential for the generation and propagation of action potentials in excitable cells. Exposure to EMF can disrupt their function, affecting neuronal excitability and leading to symptoms such as fatigue, headaches, or sensory disturbances.

3. Voltage-Gated Potassium Channels (Kv)

Potassium channels are crucial for cellular repolarization after an action potential. Dysfunction of these channels, caused by EMF exposure, can lead to hyperexcitability or disruptions in heart rhythm, such as palpitations or arrhythmias.

4. Voltage-Gated Chloride Channels

Chloride channels regulate membrane potential and cell volume. Their dysfunction can affect membrane voltage stability and lead to neuromuscular and sensory symptoms.

Diagram: Mechanisms linked to exposure to non-ionising EMFs

This diagram, drawn by Dr. Richard Gautier, illustrates the possible effects of exposure to non-ionising Electromagnetic Fields (EMF). The effects of these mechanisms can manifest themselves as, among others, the following:

• Headaches (cephalalalgias)
• Sleep disorders and fatigue
• Cognitive disorders
• Brain tumours
• Neurodegenerative diseases
• Cancer and leukaemia

The diagram also details how EMFs can alter the permeability of blood-brain and blood-blood barriers, as well as affect melatonin synthesis and immunity in lymphocytes, which could explain their link to chronic and neurodegenerative diseases.

Clinical consequences

1. Oxidative Stress and Inflammation

Excessive activation of voltage-dependent calcium channels causes an increase in ROS and inflammatory cytokines, leading to chronic inflammation and cell damage.

2. Neurological disturbance

Dysfunction of sodium and calcium channels affects neuronal excitability, causing headaches, cognitive problems and sleep disturbances.

3. Cardiovascular problems

Potassium channel dysfunction alters cardiac repolarisation, leading to palpitations and arrhythmias in sensitive individuals.

4. Muscle Disorders

Changes in ion channels can alter muscle function, causing muscle spasm, fatigue and weakness.

Scientific evidence

1. Martin Pall and VGCCs: Dr. Martin Pall proposed that non-ionising EMFs affect VGCCs, increasing intracellular calcium entry and triggering a cascade of oxidative stress and cell damage.
   • Reference: Pall, M. L. (2013). Electromagnetic fields act via activation of voltage-gated calcium channels to produce beneficial or adverse effects. Journal of Cellular and Molecular Medicine, 17(8), 958-965. DOI: 10.1111/jcmm.12088.
2. EMF oxidative stress: Exposure to non-ionising EMF can induce the production of ROS, leading to oxidative stress and DNA damage.
   • Reference: Belpomme, D., Hardell, L., Belyaev, I., Burgio, E., & Carpenter, D. O. (2018). Thermal and non-thermal health effects of low intensity non-ionizing radiation: An international perspective. Environmental Pollution, 242, 643-658. DOI: 10.1016/j.envpol.2018.07.019.
3. Neurological effects and EMF: EMF can alter neuronal function, causing symptoms such as fatigue, headaches and cognitive problems.
   • Reference: Belyaev, I., Markova, E., Hillert, L., Malmgren, L. O., & Persson, B. R. (2009). Microwaves from mobile phones inhibit 53BP1 focus formation in human stem cells more strongly than in differentiated cells: Possible mechanistic link to cancer risk. Environmental Health Perspectives, 117(6), 870-876. DOI: 10.1289/ehp.0800465.
4. EMF-induced inflammation: EMF can induce inflammatory responses by activating calcium channels and producing ROS.
   • Reference: Yakymenko, I., Sidorik, E., Kyrylenko, S., & Chekhun, V. (2011). Long-term exposure to microwave radiation provokes cancer growth: Evidences from radars and mobile communication systems. Experimental Oncology, 33(2), 62-70.

Conclusion