Effectiveness of Vitamin E and Hydrogen-Rich Water on Radiation Therapy-Induced Adverse In Patients With Rectal Cancer

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

• Ages 18 years and older
• All sexes
• No healthy volunteers
• Adult, Older adult

Trial locations and contacts

1 site in 1 country.

About this study

Official title: Effectiveness of Vitamin E and Molecular Hydrogen-Rich Water on Radiation Therapy-Induced Adverse In Adult Patients With Rectal Carcinoma in Al-Quds, Palestine

Conditions

Radiation-induced Injuries in Patients With Rectal Cancer

Being tested

Vitamin E, Hydrogen rich water, placebo

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

• Vitamin EDietary supplement

  Also called 500 IU of d-alpha-tocopherol

  Members of the vitamin E family are hydrophobic fat-soluble compounds found in a variety of food sources such as vegetable oils, fruits, and vegetables consumed through diet. Vitamin E exists in 8 isoforms, a, b, g, d-tocopherol, and a, b, g, d-tocotrienol. The recommended daily allowance for adults is 15 mg per day for alpha-tocopherol, an amount which is easily met by dietary sources, and 30 mg per day for synthetic all-rac-alpha-tocopherol. The upper limit for intake is 1,000 mg per day. Very often, the dosage of vitamin E is given in international units (IU) as capsules, with a typical dose being 400 IU per day, which is above the recommended daily allowance. The health benefits of consuming vitamin E through diet or supplementation are believed to be for its antioxidant properties as a peroxyl radical scavenger. Vitamin E protects cells from cell damage caused by free radicals that damage cell membranes through lipid oxidation leading to DNA damage and cancer development.

• Hydrogen rich waterDietary supplement

  Molecular hydrogen is a new medical gas that can be dissolved in water and administered through drinking, inhalation, baths, intravenous drip. A growing body of evidence indicates that hydrogen, as a novel antioxidant, scavenges hydroxyl radical and peroxynitrite. In contrast to other antioxidants, gaseous molecular hydrogen efficiently penetrates cytoplasmic membranes and targets intracellular organelles, largely owing to its small size and neutral electricity. Thus, hydrogen has been suggested as a suitable candidate for the therapeutic strategies for various diseases, including certain types of cancer. Hydrogen has emerged as a promising cancer remedy as a preventative agent or in combined therapy with anticancer drugs. Hydrogen water consumption might mitigate the side effects of anticancer drugs by decreasing oxidative stress and ameliorating metamorphosis due to decreased apoptosis.

• placeboDietary supplement

  Placebo containing gelatin is made by cooking down the protein collagen found in the skin, hooves, connective tissues, and bones of animals. The cooking process breaks down the bonds between proteins to make smaller, more bioavailable building blocks that your body can easily absorb. Like collagen, gelatin is packed with beneficial amino acids, especially the anti-aging superstar's glycine and proline, which are lacking in the standard Western diet. These amino acids make gelatin especially powerful for healing skin, gut, and joint damage. Because collagen and gelatin come from the same source, they have identical amino acid profiles

What is being measured

The primary outcome is the main question the study is designed to answer.

1. total blood count

   A hematology analyzer is commonly used to investigate changes in hematological parameters, which vary in response to systemic changes. These hematological parameters include WBCs, which defend the body against foreign invaders; their numbers increase during inflammation. RBCs contain hemoglobin, which carries oxygen to the tissues. Platelets have a hemostatic function. During injury, they gather at the site of damage in blood vessels and form a primary platelet plug. Bleeding occurs when the platelet count decreases.

   Measured: One day before the first day of radiation exposure (initial data) and 2, 6 and 8 weeks post radiation exposure

2. Nuclear factor erythroid 2-related factor 2 (Nrf2)

   Nrf2, a basic leucine-zipper containing transcription factor that plays a key role in the regulation of the production and expression of antioxidant genes in the body. Nrf2 usually combines with the ARE, which is the upstream promoter region of SOD, CAT, GPx, etc. After combination, the enzyme complex upregulate the expression of a serious endogenous protective antioxidant genes in the tissue, thereby maintaining the balance of oxidation and antioxidant levels of the cells.

   Measured: One day before the first day of radiation exposure (initial data) and 2, 6 and 8 weeks post radiation exposure

3. Superoxide dismutases (SOD)

   SODs are a group of metalloenzymes that are found in all kingdoms of life. SODs form the front line of defense against reactive oxygen species (ROS)-mediated injury. These proteins catalyze the dismutation of superoxide anion free radical (O2-) into molecular oxygen and hydrogen peroxide (H2O2) and decrease O2- level which damages the cells at excessive concentration. This reaction is accompanied by alternate oxidation-reduction of metal ions present in the active site of SODs. During oxidative damage, the level of this enzyme within the tissues is elevated in order to protect them. SOD converts O2- into H2O2.

   Measured: One day before the first day of radiation exposure (initial data) and 2, 6 and 8 weeks post radiation exposure

4. Catalase (CAT)

   CAT is a common enzyme found in nearly all living organisms, which are exposed to oxygen. The first function assigned to catalase is the transformation of hydrogen peroxide into oxygen and water. It thus plays an important role in defending cells against oxidative damage by degrading hydrogen peroxide. Catalase can modulate the growth rate by various mechanisms, the first obviously being its ability to detoxify H2O2. The second is its ability to bind and protect certain proteins from potential oxidative damage, which in turn are involved in the processes of proliferation and migration. As shown by many reports, catalase and mitochondrial superoxide dismutase control cell growth and migration processes in cancer cells.

   Measured: One day before the first day of radiation exposure (initial data) and 2, 6 and 8 weeks post radiation exposure

5. Glutathione S-transferase (GST)

   GST isoenzyme superfamilies detoxify a wide-range of toxic chemicals and environmental substances are extensively expressed in mammalian tissues. GSTs play a key role in the deactivation of reactive oxygen species (ROS) and the metabolism of lipids, chemotherapeutic agents. GSTs are mainly involved in conjugation of reduced glutathione (GSH) with diverse substrates specificity and it is possible that genetic variations in these enzymes will influence cellular response to the environmental agents. GSTs are overexpressed in response to a chemical or oxidative stress as an adaptive physiology and upregulated in cancerous state of organ or tissue. GSTs are essentially involved in susceptibility to various forms of cancer as they are vital in detoxification mechanism to metabolize the environmental carcinogens.

   Measured: One day before the first day of radiation exposure (initial data) and 2, 6 and 8 weeks post radiation exposure

6. Malondialdehyde (MDA)

   MDA is one of the consequences of uncontrolled oxidative stress is cells, tissues, and organs injury caused by oxidative damage. It has long been recognized that high levels of free radicals or reactive oxygen species (ROS) can inflict direct damage to lipids. MDA is an end-product generated by decomposition of arachidonic acid and larger PUFAs, through enzymatic or nonenzymatic processes. MDA is highly reactive, capable of inhibiting enzymes that protect cells against the harmful effects of oxidative stress.

   Measured: One day before the first day of radiation exposure (initial data) and 2, 6 and 8 weeks post radiation exposure

7. Tumor necrosis factors (TNF)

   TNF refer to a group of cytokines which are mainly secreted by monocytes/macrophages. While it was first recognized for its anti-tumor activity, TNF has since been identified as a highly pleiotropic cytokine that mediates multiple cellular processes including inflammation, cell differentiation, cell survival and proliferation, and apoptosis. The master pro-inflammatory cytokine, TNF, has been shown to modulate multiple signaling pathways, with wide-ranging downstream effects. TNF plays a vital role in the typical immune response through the regulation of a number of pathways encompassing an immediate inflammatory reaction with significant innate immune involvement as well as cellular activation with subsequent proliferation and programmed cell death or necrosis.

   Measured: One day before the first day of radiation exposure (initial data) and 2, 6 and 8 weeks post radiation exposure

8. Matrix metalloproteinases(MMPs)

   MMPs are members of metzinc in group of zinc dependent endopeptidases which are responsible for degrading and remodeling of extracellular matrix (ECM) during organogenesis, wound healing, angiogenesis, apoptosis, cell proliferation and cancer progression. The expression and activity of MMPs in adult tissues is normally quite low, but increases significantly in various pathological conditions that may lead into unwanted tissue destruction, such as inflammatory diseases, tumour growth and metastasis. MMPs are produced by multiple tissues and cells. MMPs are secreted by connective tissue, pro-inflammatory, and uteroplacental cells.

   Measured: One day before the first day of radiation exposure (initial data) and 2, 6 and 8 weeks post radiation exposure

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

1. First posted19 Jan 2021
2. Study start6 Jul 2019
3. Primary completion8 Mar 2021 (estimated)
4. Study completion8 May 2021 (estimated)

Resources

• Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
• Other trials for Radiation-induced Injuries in Patients With Rectal CancerStudies of the same condition, open and under way.
• What the trial phases meanHow a treatment moves from first tests in people to approval.

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.