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The study will be a randomized, placebo-controlled, double-blinded clinical pivotal trial. Patients will be allocated in a ratio of 1:1 to the melatonin or placebo group. Patients will be stratified according to the type of surgery (lumpectomy or mastectomy). Randomization will be performed in
In medical practice, an ideal therapy should have maximal benefit with minimal risk. While considerable effort is being placed into discovering more effective pharmaceuticals, there is a growing field of interest in alternative therapies. In the 1970's, George Engle put forward the idea of the
This is a randomized, double-blind clinical trial, parallel, placebo-controlled trial. Breast cancer women treated surgically and with indication for adjuvant chemotherapy, aged between 18 and 75 years will be included. Patients will be randomized to receive 20mg of melatonin or placebo at bedtime.
Hypotheses
Some studies have shown an inverse relationship between cancer-related fatigue and the time of exposure to natural light for cancer patients. This association suggests the existence of a vicious circle of side effects of chemotherapy (physical fatigue and moral), itself causing a decrease
The treatment of locally advanced breast cancer is a complicated issue. For neoadjuvant treatment is often needed to downstage locally advanced BC tumors prior to surgery, however many patients do not achieved objective response during treatment. The ability of melatonin and metformin to decrease
The management of locally advanced breast cancer is complicated issue. Neoadjuvant treatment is often needed to downstage locally advanced ER positive BC tumors prior to surgery. However, many patients do not achieved objective response on treatment. The ability of melatonin and metformin to
Subjects will be randomized to receive either melatonin or placebo. Subjects will receive 20-mg oral melatonin or placebo the night before their first RT treatment, each night throughout the course of RT treatment, and for 2 weeks following the completion of RT. Patients with localized breast cancer
If you agree to participate in this study you will be asked to undergo a blood test to find out if you are eligible. Approximately 2 tablespoons of blood will be drawn. The blood test will check your health and menopausal status. This test will aslo be used to help measure any additional effects of
About 1.4 million women are diagnosed with breast cancer every year. Breast cancer is the most common malignancy among women worldwide constituting about 1/5 of all cancer types. Breast cancer diagnosis and treatment, and the months following primary therapy are stressful times for most women. Aside
An increasing number of studies have shown that circadian variation in the excretion of hormones, the sleep-wake cycle, the core body temperature, the tone of the autonomic nervous system and the activity rhythm are important both in health and disease processes. More attention is being paid towards