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Discover 17,885 clinical trials near Houston, Texas. Find research studies in your area.
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Showing 17281-17300 of 17,885 trials
NCT00577304
The purpose of this research study is to test the safety, tolerability, and effectiveness of Topical AmphiMatrix with Nitroglycerin (MQX0503) to relieve Raynaud's symptoms and increase blood flow to the fingers.
NCT00135395
The purpose of this study is to compare the anti-HIV efficacy, safety and effect of serum lipids of two boosted protease inhibitor-based HAART regimens (ARV/RTV v. LPV/RTV) in HIV-1 infected subjects who have experienced their first virologic failure while receiving a NNRTI-containing HAART regimen.
NCT00002707
RATIONALE: Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. It is not yet known if chemotherapy given before surgery is more effective with or without docetaxel given before or after surgery for breast cancer. PURPOSE: Randomized phase III trial to compare the effectiveness of chemotherapy using doxorubicin and cyclophosphamide with or without docetaxel in treating women who have stage II or stage III breast cancer.
NCT00138671
A One Year Clinical Trial Assessing the Usefulness and Safety of Inhaled Insulin in Diabetics with Chronic Obstructive Pulmonary Disease.
NCT00383422
The purpose of this study is to compare the effect of arzoxifene to raloxifene on the bone mineral density (bone strength).
NCT00702819
Retinopathy of Prematurity (ROP) is a leading cause of blindness in children in developed countries around the world, and an increasing cause of blindness in developing countries. The retina lines the inside of the eye. It functions as "film" within the camera which is the eye. When an infant is born prematurely, the vascular network necessary to nourish the retina has not fully developed. As a consequence, in some infants abnormal vessels proliferate instead of the normal ones - a condition known as ROP. The abnormal vessels carry scar tissue along with them, and may lead to retinal detachment and blindness if the eye is not treated. The Multicenter Trial of Cryotherapy for Retinopathy of Prematurity (CRYO-ROP) Study demonstrated that ablation of the peripheral avascular retina reduced the risk of poor structural and visual outcome due to retinal distortion or detachment in ROP (1980's). The ablated retina is not functional and is not amenable to regeneration. Peripheral retinal ablation is not universally effective in fostering regression of ROP. This is particularly true for an aggressive form of ROP (aggressive posterior ROP, or APROP) which typically afflicts profoundly premature and infirm neonates. In this subset of infants, progression of ROP to bilateral retinal detachment and blindness occurs despite timely and complete peripheral retinal laser ablation. Rationale The development of ROP is largely dependent on vascular endothelial growth factor (VEGF). When an infant is born prematurely the relatively hyperoxic environment the baby is introduced to shuts down the production of VEGF. Retinal maturation is delayed. Subsequently, at a time when intraocular VEGF levels would normally be declining late in the third trimester of pregnancy, abnormally high levels of VEGF are seen due to large areas of avascular retina and associated tissue hypoxia. The availability of FDA-approved drugs for anti-VEGF treatment renders it possible to treat such eyes off-label. Available drugs include pegaptanib sodium (Macugen) for partial blockage of VEGF-A, or drugs such as ranibizumab (Lucentis) and bevacizumab (Avastin), which cause complete blockage of VEGF-A. As VEGF is required in the developing retina for normal angiogenesis, and our goal is not to penetrate tissue, but to block the excessive levels of VEGF trapped within the overlying vitreous which is responsible for the abnormal vasculature in ROP. For purposes of this study the investigators have chosen bevacizumab (Avastin), which will: a) attain complete blockage (vs. Macugen) of intravitreal VEGF-A, and; b) which is limited in its ability to penetrate tissues because it is a full antibody (vs. Lucentis, an antibody fragment specifically designed for better tissue penetration), and is more likely to restore VEGF homeostasis within the developing retina.
NCT01055847
This is multicenter placebo-controlled study evaluating the safety and efficacy of AI at two dosage levels compared to placebo in CF patients with P. aeruginosa lung infection.
NCT00359801
The purpose of this study is to evaluate the long-term pulmonary and cardiovascular safety of Exubera in routine clinical practice.
NCT00361751
Insulin resistance and hyperglycemia contribute to negative outcomes in burned patients. We will assess insulin sensitivity in traditional terms of glucose metabolism, and with regard to the responsiveness of both muscle and liver protein metabolism, in severely burned patients. Plasma free fatty acid (FFA) and tissue TG levels will be manipulated via inhibition of peripheral lipolysis with nicotinic acid or activation of plasma lipoprotein lipase activity with heparin, stimulation of tissue fatty acid oxidation and thus reduction of tissue TG with the peroxisome proliferate-activated receptor (PPAR) alpha agonist fenofibrate. Methodological approaches will include stable isotope tracer techniques to quantify kinetic responses of protein, glucose and lipid metabolism in vivo, quantification of intracellular stores of TG and glycogen by means of magnetic resonance spectroscopy (MRS), as well as quantitative analysis of tissue levels of active products of fatty acids, key intermediates of the insulin signaling pathway, glycogen, the enzyme activities of citrate synthase and glycogen synthase and the activity of the muscle mitochondria. These studies will clarify the physiological and clinical significance of the alterations of tissue lipid metabolism that occur after burn injury, thereby forming the basis for new therapeutic approaches not only in this specific clinical condition but in other clinical circumstances in which hepatic and/or muscle TG is elevated. We will investigate the general hypothesis that the accumulation of intracellular TG in liver and muscle either directly causes insulin resistance in those tissues or serves as an indictor of the intracellular accumulation of active fatty acid products, such as fatty acyl CoA and diacylglycerol, which in turn disrupt insulin action. The following specific hypotheses will be investigated: 1. Intracellular TG is elevated in both muscle and liver in severely burned patients. The reduction of the fat in the liver and the insulin resistance will improve clinical outcomes, glucose and protein metabolism. 2. The insulin signaling pathway, as reflected by phosphoinositol-3-kinase (PI3K) and PKC activity, is impaired in tissues with elevated TG. 3. Fatty acids, or their active intracellular products, are the direct inhibitors of insulin action, rather than the tissue TG itself.
NCT00238342
RATIONALE: Finding specific proteins in the blood may help doctors tell whether a patient has ovarian cancer. PURPOSE: This clinical trial is studying how well proteomic profiling works in diagnosing ovarian cancer in patients who are undergoing surgery for an abnormal pelvic mass.
NCT00455546
The study will be conducted at up to 80 centers worldwide and will be a double-blind randomized parallel group placebo controlled study among subjects with stable coronary artery disease (CAD). Subjects will be randomized to receive either placebo tablets or one of 4 orally active doses of A-002. The duration of study drug therapy will be 8 weeks.
NCT00719862
The Purpose of this study is to determine if one allergy medication (0.15% azelastine hydrochloride) is more effective than Placebo alone
NCT00962637
Approximately 4 to 5 million men in the U.S. are testosterone-deficient. Enclomiphene (trans-clomiphene) citrate (Androxal) was evaluated to determine if Androxal increased serum testosterone levels in men with secondary hypogonadism. Subjects were randomly assigned to 1 of 4 treatments groups. Appropriate amounts of medications were dispensed at each visit. Subjects took their medications orally or by rubbing it onto the skin (depending on the treatment assignment) once daily for up to 6 months. Treatment visits occurred at approximately 4-week intervals for Months 1, 2, and 3 and then at 6-week intervals for Months 4, 5, and 6.
NCT00716404
This is a prospective, observational, multi-center study with consecutive enrollment. Up to 1,000 patients will be enrolled. The objective of this post-marketing surveillance study is to collect clinical usage patterns of the Benephit Infusion Systems. As a result, FlowMedica will be able to: 1. Better understand and quantify usage patterns including patient characteristics, adjunctive procedures, and infusion agents. 2. Collect user-interface information and overall customer satisfaction. 3. Monitor post-marketing device performance.
NCT00599274
The purpose of this study is to find out if weekly Avonex works as well as three times a week Rebif in subjects with relapsing multiple sclerosis.
NCT00233701
The overall aim of the registry is to develop a longitudinal, observational database that is focused on adult patients with Normal Pressure Hydrocephalus (NPH) that can be used as a source of clinical information for individual surgeons, as well as a national data repository for scientific inquiry and publications.
NCT00120393
Patients with HIV who are virologically suppressed on a lopinavir/ritonavir combination highly active antiretroviral therapy (HAART) regimen but with elevated non-HDL cholesterol are randomized to remain on lopinavir/ritonavir or change to atazanavir/ritonavir in combination with current nucleoside reverse transcriptase inhibitors (NRTIs).
NCT00691470
The purpose of this research study is to test an experimental drug ATI-5923 vs Coumadin. The study is intended to demonstrate ATI-5923 is superior to Coumadin for keeping INR values in the desired therapeutic range. Patients who require chronic anticoagulation with one or more of the following conditions are eligible for the study: atrial fibrillation or atrial flutter, prosthetic heart valve, venous thromboembolic disease, or history of myocardial infarction or cardiomyopathy will be enrolled.
NCT00106379
The purpose of this study is to provide long-term clinical safety and efficacy data for tenofovir disoproxil fumarate and emtricitabine in HIV-infected patients experiencing various degrees of renal impairment.
NCT00782587
The purpose of this research study is to test the safety and tolerability of an experimental drug, Chemophase, a combination of recombinant human hyaluronidase, (an investigational synthetic enzyme also known as rHuPH20), and mitomycin (MMC) in the treatment of superficial bladder cancer when instilled intravesically immediately after TURBT (transurethral resection of bladder tumor).
