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Discover 23,284 clinical trials near Maryland. Find research studies in your area.
Showing 22681-22700 of 23,284 trials
NCT00040261
The purpose of this study is to determine the safety and effectiveness of the drug memantine for treating major depression. Major depression is a serious public health concern that contributes to significant morbidity and mortality. Despite the availability of a wide range of antidepressant drugs, a proportion of patients with major depression fail to respond to first-line antidepressant treatment, despite adequate dosage, duration, and compliance. Recent studies suggest that the glutamatergic system may play a role in the pathophysiology and treatment of depression. Memantine and other agents which reduce glutamatergic neurotransmission may represent a novel class of antidepressants. The study consists of three phases. In Phase 1, participants will be tapered off all psychiatric medications over a 2-week washout period. In Phase 2, participants will be randomly assigned to receive either memantine or placebo (an inactive pill) three times a day for 8 weeks. Participants who do not respond to the treatment after 8 weeks will be taken off the study and offered standard treatment. Weekly psychiatric evaluations will evaluate treatment response. During Phase 2, participants who respond well to treatment will enter Phase 3, a 16-week continuation phase of either memantine or placebo. Interviews will be conducted every other week in the first month , then monthly thereafter. Participants will have a physical examination, neuropsychological tests, and eye blink tests at baseline and at the end of the study. Pulse, blood pressure, and blood samples will be taken throughout the study. Participants will undergo an electrocardiogram as well as positron emission tomography (PET) and magnetic resonance imaging (MRI) scans of the brain.
NCT00001867
The purpose of this study is to gain information about the course of uveitis (a type of eye inflammation) during pregnancy and the postpartum period (six months after delivery). Some reports have indicated the condition may improve or disappear without treatment during pregnancy and recur postpartum, requiring treatment. No systematic studies have been done, however, to examine a link between pregnancy and disease suppression. All medicines for uveitis have side effects-particularly for pregnant women, their unborn babies, and breast-feeding mothers. The information gained may help guide treatment decisions for these patients in the future. Women who are between 2 and 20 weeks pregnant and have had uveitis within 2 years of becoming pregnant will be followed monthly with an eye examination and blood tests until six months after giving birth. The eye examination will include dilation of the pupils to look at the back of the eye. Photos of the eye will be taken to record changes that occur due to uveitis. The blood tests will assess immune function and try to determine whether levels of hormones and cytokines are related to uveitis disease activity. Patients who develop an inflammation and significant vision loss may require treatment, possibly with eye drops or injections near the eye. Treatment will be decided in consultation with the patient's obstetrician.