There are more than 498,563 clinical trials published worldwide with over 60,000 trials that are currently either recruiting or not yet recruiting. Use our filters on this page to find more information on current clinical trials or past clinical trials (free or paid) for study purposes and read about their results.
Considerable controversy exists regarding the effect of estrogen and progesterone on insulin sensitivity in postmenopausal women. Thus, the goal is to examine the effect of estradiol and progestin on in vivo insulin sensitivity and pathways of intracellular glucose metabolism in postmenopausal women. This will be accomplished by examining the effects of unopposed estrogen (CEE) or combination estrogen and progestin (CEE/MPA) versus placebo therapy in 30 early menopausal women (defined from 6 months to 3 years post-cessation of menses). Women will be treated for 16 weeks and the outcome measures will be: 1) insulin sensitivity and glucose oxidation as determined by euglycemic clamp, 2) assessments of insulin sensitivity on muscle biopsy cultures with the primary endpoints being glucose uptake and glycogen accumulation/synthesis, 3) protein levels of insulin action cascade steps based on muscle biopsy Western blots.
During acupuncture treatment, acupuncture needles are inserted and manipulated until a characteristic local tissue reaction termed "de qi" is observed. De qi can be perceived by the acupuncturist in the form of "needle grasp", a mechanical gripping of the needle by the tissue. De qi is considered essential to the therapeutic effect of acupuncture. Therefore, the investigator proposes that understanding this local tissue reaction will lead to an understanding of how the therapeutic effect of acupuncture therapy arises. Specifically, it is hypothesized that needle manipulation causes winding of collagen and elastic fibers around the needle. This action induces tension in the collagen network surrounding the needling site and results in a mechanical signal that is transduced into local cells. The objective of the current work is to use ultrasound elastography, a recently developed ultrasound imaging technique, to visualize and quantify changes in the elastic properties of skin and subcutaneous tissue in 12 healthy human volunteers as a result of acupuncture needle manipulation.
Recently, physical therapists have begun treating people who have mechanical low back pain, hypothesized to be caused by segmental instability in the lumbar spine, with a very specific exercise program consisting of trunk stabilization exercises. The theory behind the use of trunk stabilization exercises to treat lower back pain is that active contraction of the trunk local segmental muscles helps to control inter-segmental movement in the spine. The initial trunk stabilization exercise that physical therapists teach patients is an abdominal drawing in maneuver often called an abdominal hollowing exercise (AHE). A challenge for physical therapists is to establish the most effective means of teaching people to contract the relevant muscles needed to perform the AHE. The purpose of this study is to examine if supplementing the typical clinical instruction for teaching the AHE with visual ultrasound feedback to the patient is effective at reducing the length of time it takes an individual to learn to perform an AHE. Three groups of research volunteers will be taught how to do the AHE while receiving different kinds of feedback about their performance in order to determine which type of feedback is most effective in assisting people to learn the AHE. Group 1 will not receive any feedback about performance; Group 2 will receive feedback from palpation and verbal descriptive alone; and Group 3 will receive feedback from palpation, verbal descriptive feedback, and real time ultrasound. For the initial test when subjects are learning the AHE, the number of trials until the subject demonstrates his/her third correct AHE will be the outcome variable. For the retention test, the outcome variable will be the percentage of trials (out of ten) of correctly performed AHEs in the absence of visual, verbal or palpation feedback.
The proposed research is an observational study designed to compare estrogen and progesterone serum levels with knee and ankle joint laxity, and muscle reaction time as a measure of neuromuscular function. Three groups of women athletes with differing estrogen and progesterone profiles (normal menstrual cycles, amenorrheic, and exogenous estrogen supplementation) and one control group (male collegiate athletes) will be used to compare differences in joint laxity and neuromuscular function. Blood levels of estrogen and progesterone will be measured at four time points across the menstrual cycle. Joint laxity and muscle reaction time will also be measured at each of these points. The investigator hypothesizes that knee and ankle joint laxity and muscle reaction time will significantly increase with increasing estrogen and progesterone levels.
RATIONALE: Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. SU5416 may stop the growth of solid tumors by stopping blood flow to the tumor. Combining more than once chemotherapy drug with SU5416 may kill more tumor cells. PURPOSE: Phase I trial to study the effectiveness of SU5416 combined with gemcitabine and cisplatin in treating patients who have advanced solid tumors.
Peripheral neuropathies cause weakness and sensory loss that can produce severe disability. Some neuropathies are immune-mediated and associated with antibodies. It has been postulated that Rituxan treatment may reduce the level of antibody production limiting the loss of muscle strength and hence improve activities of daily living. The purpose of this open-label study (all participants get Rituxan and not placebo) is to determine the safety and effectiveness of Rituxan in the treatment of polyneuropathies associated with serum IgM autoantibodies in those who have already been treated with one course of Rituxan. Subjects will be treated on the in-patient Clinical Research Center with Rituxan for two treatments one week a part and then individual treatments every 10 weeks for one year. The effectiveness of Rituxan will be followed by looking for increases in muscle strength and decreases in the serum IgM autoantibodies.
Dr. Atkins' New Diet Revolution has sold over 10 million copies and has been on the New York Times best seller list for 158 weeks. This and other low-carbohydrate diets, such as the ZONE, Sugar Busters, and the Carbohydrate Addicts Diet, have attracted much popular attention but little scientific evaluation. Given the widespread use of these diets, it seems prudent to evaluate them both for safety and efficacy. Therefore, the purpose of the study is to compare the effectiveness of two different weight control programs over the course of 52 weeks. These two programs are 1) the Atkins' New Diet Revolution, a low-carbohydrate, high-protein diet, and 2) Brownell's LEARN Program, a high carbohydrate, low fat diet based on behavior modification. Specifically, this study will compare short-term changes in weight, food intake, blood chemistries and mood in adult males (n=10) and females (n=10) who are randomized to either the Atkins' Diet or the LEARN Program for a period of one year. During this year, they will be under medical supervision. We will examine the effect of the two weight loss plans on changes in lipids, blood pressure, insulin sensitivity and ketones, and eating behavior. This is a feasibility study and thus the data will ultimately be used to design a large randomized trial with adequate statistical power.
This is a clinical trial to test the safety and efficacy of the drug thalidomide in combination with a procedure called chemoembolization in patients with inoperable liver cancer. Chemoembolization is the process by which chemotherapy is instilled directly into the blood vessels feeding the tumor, so that the blood vessels feeding the tumor may be blocked. Chemoembolization consists of two separate procedures. It will be done by infusing chemotherapy with the drug doxorubicin through the hepatic artery into the liver and then by infusing collagen to cut off the blood supply to the tumor. A catheter will be inserted at various times to allow for these infusions. The objectives are to investigate the feasibility and potential activity of chronic administration of thalidomide in patients with unresectable hepatocellular cancer who receive chemoembolization to predominant tumor masses. The toxicity of thalidomide in these patients will be evaluated. Overall safety will also be assessed. Serum levels of angiogenic cytokines such as VEGF, bFGF, and TNF-a, that are believed to have a role in hepatocellular carcinoma, will be collected.
The purpose of this clinical trial is to assess the activity of thalidomide in combination with dacarbazine (DTIC) in patients with metastatic melanoma. Safety and toxicity of the two drugs will also be assessed. Dacarbazine is the standard medical treatment for metastatic melanoma. It has been shown to produce tumor shrinkage in approximately 20% of patients with advanced melanoma. This shrinkage is usually incomplete and lasts a short time. Thalidomide is a drug that inhibits tumor blood vessel growth. It can be given orally. It is hoped that this combination can be given to patients with metastatic melanoma without causing too much toxicity while increasing the response rate.
Purpose: This protocol proposes a safety and feasibility trial in patients with metastatic prostate cancer (stages D1-D3) investigating the induction of antitumor immunity by administration of cultured autologous peripheral blood precursor derived dendritic cells (DC), transfected with mRNA amplified from autologous prostate tumor tissue. The feasibility and dose-limiting toxicity of administering escalating doses of tumor RNA transfected dendritic cells will be defined. As a secondary endpoint, the ability of tumor RNA transfected dendritic cells to induce tumor-specific immune responses will be evaluated. Finally, the anti-tumor effect based on PSA (biochemical) response criteria will be defined. Background: Because prostate cancer is incurable when metastatic and conventional therapies do not offer a clear survival benefit, new therapeutic strategies are warranted. This study is based on the premise that clinically effective cell mediated immune responses against prostate tumors can be elicited by activation of tumor associated antigen specific T cells. Work performed by others and our group suggests that PSA, a protein expressed in virtually all prostate cancers, can serve as a widely expressed candidate antigen for prostate cancer immunotherapy. In particular, we have shown that cultured dendritic cells transfected with mRNA encoding PSA are remarkably effective in stimulating antigen specific immunity in vitro. Therefore, we hypothesize that administration of PSA RNA transfected DC will lead to detectable levels of PSA specific CTL in the peripheral blood of patients with PSA expressing metastatic prostate cancer. It is hoped that these T cell responses also have clinical antitumor activity.