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Discover 10,048 clinical trials near Portland, Oregon. Find research studies in your area.
Showing 7621-7640 of 10,048 trials
NCT00596531
The objective of this project is to determine whether acamprosate is more effective at providing relief for tinnitus than a placebo. Acamprosate has been suggested to be effective in reducing tinnitus annoyance in a preliminary study. Study evidence indicates that tinnitus is related to increased excitatory spontaneous brain activities. Acamprosate may help restore the excitatory/inhibitory balance in the brain and thus reduce tinnitus. The current study includes three phases. The first phase is an open-label screening study used to identify tinnitus subjects responding to acamprosate. These responding subjects will enter the second phase, which is a double blind, placebo-controlled study aimed at confirming the subjects' responses to acamprosate. In the third phase, clinical parameters of both responders and non-responders will be compared using a multi-linear regression model to determine characteristics that define the sub-group of tinnitus patients that are likely to benefit from acamprosate treatment. Participation in the study requires that individuals come to Portland, Oregon at least 6 times over 16 months for evaluation and data collection.
NCT00088608
The study treatment period is 15 days in length and includes patients with pituitary Cushing's disease who are candidates for surgical intervention as well as and patients who have recurrent Cushing's post operatively.
NCT00120848
Human Papilloma virus (HPV) are viruses that cause a common infection of the skin and genitals in men and women. Several types of HPV infection are transmitted by sexual activity and, in women, can infect the cervix (part of the uterus or womb). This infection often goes away by itself, but if it does not go away (this is called persistent infection), it can lead in women over a long period of time to cancer of the cervix. If a woman is not infected by HPV, it is very unlikely that she will get cervical cancer. This is an observer blind follow up study of the study HPV-001, which evaluated the ability of the HPV vaccine to prevent HPV infection. The current study invites all of the 1113 subjects in the HPV-001 study that received all three doses of vaccine/placebo to be enrolled and followed-up for several additional years to see if the HPV vaccine prevents HPV-16 and HPV-18 infections and to evaluate the safety of the vaccine. Subjects will remain in the same study group as in the primary study. No vaccine or placebo will be administered in this study. The Protocol Posting has been updated in order to comply with the FDA Amendment Act, Sep 2007.