13 Clinical Trials for Various Conditions
This study will examine the influence of dietary intake of tryptophan on response to metformin. The investigators hypothesize that dietary tryptophan alteration will influence metformin response.
Diseases caused by brain energy supply defects can be innate (fibromyalgia secondary to familial mitochondrial disorders) or acquired (tardive dyskinesia or weight gain associated with prolonged antipsychotic use). Patients with these possible mitochondrial disorders will provide a baseline resting heart rate sample, ingest low-dose metformin (500 mg), and then provide an additional sample 2 hours later.
The SUGAR-MGH investigators are studying the influence of inherited gene variants on the response to two commonly prescribed type 2 diabetes medications, metformin and glipizide. They hypothesize that variants in genes that are associated with type 2 diabetes or related traits may impact the effect of anti-diabetic medications. In addition, physiological responses to an insulin secretagogue or an insulin sensitizer may shed light on the mechanism of action of reported genetic associations.
Specific Objectives: * To determine if individuals who carry a decreased or non-functional variant of OCT1 exhibit differences in the pharmacokinetics of metformin in comparison to individuals who carry the common allele. * To determine if individuals who carry the decreased or non-functional variants exhibit differences in the response to metformin in comparison to individuals who carry the common allele.
The purpose of this research study is to examine whether specific genes (e.g. SLC16A11) affect how human beings respond to food and a medication that is commonly used to treat type 2 diabetes. The food the investigators will be studying is specially prepared to contain protein, carbohydrate, and fat. The drug the investigators are studying is metformin. The investigators hypothesize that physiological responses to the meal and to the medication will differ between carriers and non-carriers of genes associated with type 2 diabetes.
The purpose of this study is to determine whether a commonly prescribed drug, metformin, can enhance the benefits seen during resistance exercise such as increased muscle mass and strength.
The goal of this clinical research study is to learn more about the possible effects of metformin extended release (ER) in patients with colon cancer or adenomas who are about to have surgery. The safety of this drug will also be studied. Metformin-ER is commonly used to control blood sugar levels in patients with diabetes. It is also designed to block a protein in tumor cells that is important in tumor growth and blood vessel development. This may cause cell death or reduce the spread of the disease.
This randomized clinical trial (RCT) evaluates whether metformin can reduce systemic inflammation and improve immune function in individuals with a history of injection drug use, with or without HIV. Participants will receive metformin or placebo and undergo immune system assessments, including vaccine response evaluations.
With aging the immune system gets weaker. This makes older adults more susceptible to influenza (flu). Vaccinations help to prevent infection from the flu virus, however the immune system of older adults do not respond as well to vaccines compared to young adults and thus, aren't as well protected from the complications from the flu. This research is being done to determine if Metformin, an FDA-approved diabetes medication, is effective at enhancing immune responses to flu vaccine in older men and women. Participants will be randomly assigned to either metformin or placebo treatment for a total of 22 weeks. Participants will be vaccinated with high-dose flu vaccine after 12 weeks of treatment. Immune responses will be evaluated throughout the study at 6 time points.
Metformin has a well-established safety profile and it has become clear that metformin has additional salutary effects, including anti-inflammatory, anti-aging, and anti-thrombotic properties. In this study, subjects will provide both venous blood samples and stool samples in addition to completing cognitive and physiologic testing at baseline, throughout a 90 day exposure to metformin, and 30 days following exposure to metformin in order to evaluate their immune, microbiome, cellular respiration, thrombotic, and inflammatory responses.
To determine whether metformin (MET) can improve the immune response to the pneumococcal conjugate vaccine (PCV-13) in older adults.
Background: - There are no established treatments for people with certain advanced kidney cancers. These tumors often don't respond well to currently available treatments. Researchers believe that two drugs that treat other diseases metformin and vandetanib could help people with advanced kidney cancer. Objective: - To test the combination of metformin and vandetanib in people with advanced kidney cancer. Phase I of the study will determine a safe dose for the drugs. Phase II will test this dose in people with certain kidney cancers. Eligibility: * For Phase I, people 18 and over with advanced kidney cancer * For Phase II, people 18 and over with advanced hereditary leiomyomatosis and renal cell cancer (HLRCC), succinate dehydrogenase renal cell carcinoma (SDH-RCC), or advanced papillary renal cell carcinoma not related to a hereditary syndrome Design: * The study will last many months. * Participants will be screened with medical history and physical exam. * Participants will take the study drugs by mouth every day. * Participants will measure and record their blood pressure every day. * Participants will have many tests: * Blood and urine tests * Magnetic resonance imaging (MRI), computed tomography (CT), positron emission tomography (PET) scan, and other imaging tests: they will lie in machines that take pictures of their body. * Electrocardiogram (ECG): soft electrodes will be stuck to the skin. A machine will record the hearts signals. * Bone scan * Some participants may have a gynecology evaluation or photos of skin tumors taken. * Participants will have an optional tumor biopsy. * After they stop taking the drugs, participants may have medical history, physical exam, and blood tests. They will be contacted once a year by phone to find out how they are doing.
This phase I trial studies the side effects and best dose of temsirolimus and metformin hydrochloride in treating patients with cancer that has spread to other places in the body and usually cannot be cured or controlled with treatment (advanced or metastatic). Temsirolimus may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Metformin hydrochloride is a drug used to treat diabetes that may also prevent or slow the growth of cancers. Giving temsirolimus and metformin hydrochloride together may kill more tumor cells.