View clinical trials related to Healthy Volunteers.
Filter by:The impact of anti-platelet drugs on the concentrations of Brain-derived neurotrophic factor (BDNF) in human plasma and serum is unknown. It is the aim of this study to investigate the impact of a single dose of Aspirin (500 mg) or Clopdigrel (600 mg) on the concentrations of Brain-derived neurotrophic factor (BDNF) in plasma and serum of healthy volunteers.
This is a randomized, single-blinded, Phase IV, monocentric study in healthy adults aged > 18 and < 60 years to evaluate the cellular and humoral immunogenicity as well as the reactogenicity of intramuscular, inactivated, trivalent influenza vaccines, including aluminium adjuvanted whole virus vaccine, split vaccine and subunit vaccine.
The purpose of this study is to determine genetic factors that affect responses to niacin therapy and endotoxemia in healthy volunteers.
This study will examine genome sequencing in clinical research. Genome sequencing is a process in which researchers analyze (or sequence) part or all of the genome from a single person. The human genome is the material in cells that includes thousands of genes. Gene changes that cause or contribute to disease can be passed on from one generation to the next. This study first focuses on heart disease. Later, researchers hope to study other conditions and genes, with the eventual goal of sequencing most or all of participants genes. Participants ages 45 to 65 years of age and who do not smoke, may be eligible for this study. Patients will come to the NIH Clinical Research Center for an initial study to last about half a day. They will donate a blood sample and complete a short survey. Then they will meet the genetic counselor to learn more about genome sequencing. Those who join the study will undergo the following procedures and evaluations: - Family history and medical history. - Measurement of height and blood pressure. - Noninvasive heart tests, including electrocardiogram and echocardiogram. - Drawing of about 3 ounces of blood (5 to 6 tablespoons); part of the blood sample will be used for research and another part for clinical testing. - Multidetector computed tomography (CT), a test to measure coronary artery calcification, that is, condition of inflexibility. Each patient will receive a letter with results of the clinical laboratory values and evaluations. There will be recommendations for follow-up with the patient s doctors. Risks in this study include exposure to radiation from the CT test. The radiation amount used is about the same that a person normally receives from natural sources, such as from the sun, outer space, and radioactive materials found naturally in the earth s air and soil. Another slight risk involves reactions to a contrast agent that may be used in the echocardiogram. Side effects can be headache, nausea or vomiting, a warm sensation, and dizziness. With the samples that patients provide, researchers will start by sequencing about 400 genes related to heart disease. Analysis will take months to complete. Genome sequencing is difficult to do, and researchers have much to learn about the genes they sequence and the gene changes they find. If the researchers find gene changes that are important to the health of a participant, they will contact that participant and give him/her the choice of learning such results. This study may or may not have a direct benefit for participants. Patients would get free clinical testing for cholesterol, diabetes, and other conditions, as well as information about gene changes. Knowledge gained will benefit people in the future as researchers learn about the relationship between gene changes and health.
This research study involves the use of the drugs Letrozole, GnRH, and NAL-GLU GnRH antagonist. Letrozole is a drug that is approved by the U.S. Food and Drug Administration (FDA) for use in breast cancer treatment that has been found to block the formation of estrogen. The NAL-GLU GnRH antagonist is a drug that temporarily blocks the action of GnRH. GnRH is a hormone that the body makes that stimulates other hormones that then control the function of the ovary. The purpose is to study the effects of the administration of letrozole in women with GnRH deficiency at the same time that they receive gonadotropin-releasing hormone (GnRH). In addition, administration of letrozole and NAL-GLU GnRH antagonist in healthy women with normal menstrual cycles will be done to evaluate the role of estrogen in the control of the hormone FSH, or Follicle Stimulating Hormone, in the female reproductive cycle. A better understanding of FSH control may help in the development of new treatments for women with difficulty conceiving.
Background: -This protocol is concerned with the acquisition of blood, skin, or mucosal samples from healthy volunteers or patients with selected skin diseases to support the basic science and clinical research activities of the Dermatology Branch and other intramural Laboratories and Branches at the NIH Clinical Research Center. Objectives: (Primary) -To allow collection of blood, skin, or mucosal samples from healthy volunteers or patients with selected skin or systemic diseases as needed to support the research activities of our Branch and other Laboratories and Branches. Eligibility: - Healthy individuals (including employees and other patients) and patients with selected skin or other diseases, including individuals of both genders and all racial/ethnic groups. - Patient volunteers must be willing to undergo blood drawing and/or skin/mucosal biopsies. Design: -This is dependent upon the particular investigation for which these samples are needed....