Q10 – Coenzyme (CoQ10) and cancer

What is Q10 – Coenzyme

CoQ10 (coenzyme Q10), also known as ubiquinone, is a vitamin-like substance found naturally in all the body’s cells and plays a vital role in the cells’ energy production. It functions as an electron carrier in the mitochondria (the cells’ power plants), where it is essential for the production of ATP (adenosine triphosphate), the cells’ primary energy source. The name ubiquinone specifically refers to the substance’s ubiquitous occurrence in living organisms [4].

In addition to its role in energy production, CoQ10 is a potent antioxidant that protects cells from damage caused by free radicals. (Free radicals are unstable molecules that can damage the cells’ DNA and contribute to the development of a range of diseases, including cancer) [4, 5].

History

CoQ10 was first isolated in 1957 by Dr. Fred L. Crane from beef heart mitochondria. In the 1970s, Japanese researchers began investigating CoQ10’s potential for treating heart disease, and since then, its use as a dietary supplement has increased significantly.

Although CoQ10 has not traditionally been used for the treatment of cancer, the increasing interest in its antioxidant and immunomodulating properties has led to research into its potential as a supplementary treatment for cancer. There is a growing amount of evidence suggesting that CoQ10 may have a positive effect on cancer patients, both by improving quality of life and potentially inhibiting the growth and spread of cancer cells.

Mechanisms of action and potential of Q10

CoQ10 exhibits its potential in connection with cancer treatment primarily through the following mechanisms:

Energy production in cells

Cancer cells often have disrupted energy production, characterized by an increased dependence on glycolysis (breakdown of glucose without oxygen) and decreased mitochondrial function. CoQ10 plays a crucial role in the mitochondria, where it is involved in the electron transport chain responsible for oxidative phosphorylation (a process that produces ATP (energy)). By optimizing energy production in healthy cells, CoQ10 can potentially support the body’s natural defense against cancer and reduce side effects from conventional treatments like chemotherapy and radiation therapy, which can further disrupt the cells’ energy production [4].

Antioxidant effect

Oxidative stress, an imbalance between the production of free radicals and the body’s ability to neutralize them, plays a central role in the development of cancer. CoQ10 is a powerful antioxidant that can neutralize free radicals and protect cells from damage to DNA, lipids, and proteins. By reducing oxidative stress, CoQ10 can potentially inhibit the growth and spread of cancer cells and protect healthy cells from damage caused by cancer treatment [4, 5].

Immunomodulation

The immune system plays a crucial role in fighting cancer. CoQ10 has been shown to have a positive influence on the immune system by increasing the activity of various immune cells, including NK cells (natural killer cells) and T cells, which are involved in recognizing and destroying cancer cells. CoQ10 can also increase the production of cytokines (signaling molecules that regulate the immune response).

Inhibition of angiogenesis

Angiogenesis is the formation of new blood vessels, which is essential for cancer tumor growth and spread. Cancer cells secrete growth factors that stimulate angiogenesis, thereby supplying the tumor with the necessary amount of oxygen and nutrients. Some studies suggest that CoQ10 can inhibit angiogenesis by blocking the action of these growth factors and thus limiting tumor growth [3].

Counteracting side effects from chemotherapy

Chemotherapy can cause a range of serious side effects, including cardiotoxicity (heart damage), myelosuppression (bone marrow suppression), nephrotoxicity (kidney damage), and neurotoxicity (nerve damage). CoQ10’s protective effect on the heart, its antioxidant and anti-inflammatory properties, and its ability to improve mitochondrial function can potentially reduce the risk of these side effects in patients undergoing chemotherapy [2].

Clinical studies

A number of clinical studies have been conducted investigating CoQ10’s effect as a supplementary treatment for cancer. Although the results are generally promising, there is (as always for dietary supplements) a need for more research, especially larger randomized controlled trials, to confirm the effect and establish optimal doses and treatment regimens.

Breast cancer

A randomized Phase II study published in the Journal of Clinical Oncology showed that CoQ10 improved quality of life and reduced fatigue in patients with breast cancer undergoing chemotherapy. The study included 60 patients who were randomized to receive either CoQ10 (300 mg/day) or placebo for 12 weeks. The results showed that CoQ10 significantly improved the patients’ physical function, emotional function, and general health status.

Prostate cancer

Another randomized Phase II study published in Nutrition and Cancer showed that CoQ10 improved immune function in patients with prostate cancer. The study included 32 patients who were randomized to receive either CoQ10 (200 mg/day) or placebo for 12 weeks. The results showed that CoQ10 significantly increased the activity of NK cells and cytotoxic T cells, two types of immune cells involved in fighting cancer cells.

Other types of cancer

Studies have also been conducted investigating CoQ10’s effect on other types of cancer, including lung cancer, colon cancer, and leukemia. The results are mixed, but some studies have shown promising results, including improved quality of life, reduced tumor growth, and improved response to chemotherapy.

Meta-analyses

A meta-analysis of several clinical studies published in the Cochrane Database of Systematic Reviews concluded that CoQ10 can improve quality of life and reduce side effects from chemotherapy, but more research is needed to confirm the effect on survival.

Safety

CoQ10 is generally well-tolerated, and side effects are rare. Some of the most common side effects are stomach upset, nausea, diarrhea, headache, dizziness, and rash. These side effects are typically mild and disappear on their own.

It is important to note that CoQ10 can interact with certain medications, including:

Blood-thinning medication (anticoagulants)

CoQ10 can have a blood-thinning effect, and therefore it can increase the risk of bleeding if taken with blood-thinning medication.

Chemotherapy

CoQ10 can potentially affect the efficacy of chemotherapy, either by increasing or decreasing its effect.

Blood pressure-lowering medication

CoQ10 can lower blood pressure, and therefore it can enhance the effect of blood pressure-lowering medication. Patients taking medication should consult their practitioner before taking CoQ10.

Pregnant and breastfeeding women

There is limited knowledge about the safety of CoQ10 during pregnancy and breastfeeding. It is therefore recommended that pregnant and breastfeeding women avoid taking CoQ10 unless prescribed by a doctor.

Children

There is limited knowledge about the safety of CoQ10 for children. It is therefore recommended that children under 18 avoid taking CoQ10 unless prescribed by a doctor.

Benefits of CoQ10

In addition to the potential benefits in cancer treatment, CoQ10 has a number of other health benefits:

Supports cardiovascular health

CoQ10 plays an important role in the energy production of the heart muscle and can improve heart function, lower blood pressure, and reduce the risk of heart disease. CoQ10 can also improve endothelial function (the function of the inner lining of the blood vessels) and reduce inflammation in the blood vessels.

Protects the brain

The brain is particularly vulnerable to oxidative stress, and CoQ10’s antioxidant effect can protect the brain from damage caused by free radicals and aging. CoQ10 can also improve mitochondrial function in the brain and potentially protect against neurodegenerative diseases such as Parkinson’s disease and Alzheimer’s disease.

Increases energy production

CoQ10 is essential for energy production in all the body’s cells, and an adequate level of CoQ10 can improve physical endurance and reduce fatigue. This can be particularly beneficial for cancer patients, who often experience fatigue as a result of the disease and cancer treatment.

Strengthens the immune system

CoQ10 can strengthen the immune system by increasing the activity of immune cells and regulating the production of cytokines. This can help the body fight infections and other diseases, including cancer.

Improves fertility

CoQ10 plays a role in egg and sperm cell production and can improve fertility in both men and women [6].

Protects against migraine

Some studies suggest that CoQ10 can reduce the frequency and severity of migraines.

Improves skin health

CoQ10’s antioxidant effect can protect the skin from damage caused by the sun’s UV rays and aging.

Drawbacks and limitations

Although CoQ10 has many potential benefits, there are also some drawbacks and limitations:

Limited research

Although a number of clinical studies investigating CoQ10’s effect on cancer have been conducted, there is still a need for more research, especially larger randomized controlled trials, to confirm the effect and establish optimal doses and treatment regimens.

Interactions with medication

CoQ10 can interact with certain medications, including blood-thinning medication, chemotherapy, and blood pressure-lowering medication. Patients taking medication should consult their practitioner before taking CoQ10.

Price

CoQ10 can be expensive, especially in high doses. However, there is great variation in the price and quality of CoQ10 products, so it is important to choose a high-quality product from a reliable manufacturer.

Bioavailability

The bioavailability of CoQ10 can vary depending on the molecular binding used and the individual’s absorption capacity [1]. Some forms of CoQ10, such as ubiquinol (the reduced form of CoQ10), are absorbed better than others.

Individual variation

The effect of CoQ10 can vary from person to person, depending on factors such as age, health status, and lifestyle.

Dispensing and application

CoQ10 is available in various forms, including:

Capsules

Capsules are a common form of CoQ10 and are easy to take. They typically contain CoQ10 in powder form or as small granules.

Tablets

Tablets are another common form of CoQ10. They are also easy to take and can be more economical than capsules.

Softgels

Softgels are capsules that contain CoQ10 in liquid form. They are often easier to swallow than capsules and tablets and normally have a higher bioavailability.

Ubiquinol

Ubiquinol is the reduced form of CoQ10 and is absorbed better by the body than ubiquinone. However, ubiquinol is more expensive than ubiquinone.

Solutions

CoQ10 is also available as solutions that can be taken orally or applied topically (to the skin).

Dose

The recommended daily dose of CoQ10 varies depending on individual needs and health status. Typical doses are 100-200 mg daily, but some individuals may need higher doses. It is best to take CoQ10 with a meal that contains fat, as this improves absorption.

Conclusion

CoQ10 is a promising supplement for cancer treatment with the potential to improve quality of life, reduce side effects from conventional treatments, and possibly inhibit the growth and spread of cancer cells. CoQ10’s antioxidant and immunomodulating properties, as well as its role in cellular energy production, make it an attractive supplement for cancer patients. Further research is necessary to confirm the effect and establish optimal doses and treatment regimens. Patients considering using CoQ10 as a supplementary treatment should consult their doctor to ensure safety and effectiveness.

However, there are positive trials. The study concludes that CoQ10 and UBIAD1 can be further investigated to develop new treatments for breast cancer patients with a poor prognosis.

Dietary Supplements Grouped by Effect

Dietary Supplements Alphabetical

A,. B,. C,. D,. E+F,. G,. H,. I+J+K,. L,. M,. N,. O,. P,. Q,. R,. S,. T,. U+V+Z