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| Hormone in the body made by pineal gland. • Melatonin is a potent antioxidant. It neutralizes reactive oxygen species (ROS) and reactive nitrogen species (RNS), which are involved in DNA damage and cancer progression. • Melatonin has been shown to modulate apoptotic pathways by influencing mitochondrial permeability, cytochrome c release, and caspase activation. • In several cancer cell models, melatonin appears to promote apoptosis in malignant cells while sparing normal cells. The most well-known indolamines are serotonin and melatonin, both of which play significant roles in regulating mood, sleep, and overall mental well-being. Melatonin doses (20 mg to even 40 mg per day), often given as an adjuvant treatment for cancer. -The plasma half-life of melatonin is generally in the range of approximately 20 to 60 minutes -It has been suggested that administering melatonin at the appropriate phase of the circadian cycle may enhance its anti-tumor activity and reduce the side effects of chemotherapy and radiation therapy. Bio-availability: Oral melatonin has a low and variable bio-availability (often estimated between 3% and 33%), which means that only a fraction of the ingested dose reaches the bloodstream unchanged. For proOxidant effect might need >10uM, which might be 100mg dose (assuming 10% bio-availability) Might also be required X10 levels? -It remains unknown whether the pro-oxidant action exists in vivo. the vast majority of evidence indicates that melatonin is a potent antioxidant in vivo even at pharmacological concentrations. Interactions: -Melatonin could potentially add to the blood pressure–lowering properties of antihypertensive drugs. -Patients using insulin should be monitored for changes in blood glucose levels. -Melatonin might interact with drugs like warfarin, aspirin, or clopidogrel.(antiplatelet) Melatonin Cancer Relevant Pathways
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| The selectivity of cancer products (such as chemotherapeutic agents, targeted therapies, immunotherapies, and novel cancer drugs) refers to their ability to affect cancer cells preferentially over normal, healthy cells. High selectivity is important because it can lead to better patient outcomes by reducing side effects and minimizing damage to normal tissues. Achieving high selectivity in cancer treatment is crucial for improving patient outcomes. It relies on pinpointing molecular differences between cancerous and normal cells, designing drugs or delivery systems that exploit these differences, and overcoming intrinsic challenges like tumor heterogeneity and resistance Factors that affect selectivity: 1. Ability of Cancer cells to preferentially absorb a product/drug -EPR-enhanced permeability and retention of cancer cells -nanoparticle formations/carriers may target cancer cells over normal cells -Liposomal formations. Also negatively/positively charged affects absorbtion 2. Product/drug effect may be different for normal vs cancer cells - hypoxia - transition metal content levels (iron/copper) change probability of fenton reaction. - pH levels - antiOxidant levels and defense levels 3. Bio-availability |
| 4818- | ASTX, | MEL, | Effect of astaxanthin and melatonin on cell viability and DNA damage in human breast cancer cell lines |
| - | in-vitro, | BC, | MDA-MB-231 | - | in-vitro, | BC, | T47D | - | in-vitro, | Nor, | MCF10 |
| 1785- | MEL, | Antitumoral melatonin-loaded nanostructured lipid carriers |
| - | in-vitro, | Var, | NA |
| 1781- | MEL, | Melatonin in patients with cancer receiving chemotherapy: a randomized, double-blind, placebo-controlled trial |
| - | Trial, | Lung, | NA |
| 1778- | MEL, | Melatonin: a well-documented antioxidant with conditional pro-oxidant actions |
| - | Review, | Var, | NA | - | Review, | AD, | NA |
| 1777- | MEL, | Melatonin as an antioxidant: under promises but over delivers |
| - | Review, | NA, | NA |
Query results interpretion may depend on "conditions" listed in the research papers. Such Conditions may include : -low or high Dose -format for product, such as nano of lipid formations -different cell line effects -synergies with other products -if effect was for normal or cancerous cells
Filter Conditions: Pro/AntiFlg:% IllCat:% CanType:% Cells:% prod#:122 Target#:1110 State#:% Dir#:2
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