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Find 605 clinical trials for hiv/aids near Phoenix, Arizona. Connect with research centers in your area.
Showing 161-180 of 605 trials
NCT00307164
Lipoatrophy, the loss of body fat from particular areas of the body, is a common side effect of antiretroviral therapy (ART). The purpose of this study was to determine the effectiveness of uridine supplementation in treating HIV infected individuals on stable ART with lipoatrophy.
NCT00000838
To evaluate the efficacy, safety, and pharmacokinetics of lamivudine (3TC) combined with zidovudine (AZT), stavudine (d4T), or didanosine (ddI) in comparison with d4T or ddI monotherapy in HIV-infected patients with no prior nucleoside therapy. 3TC may be uniquely effective in combination with AZT due to the interaction of AZT and 3TC resistance mutations. One explanation is that the M184V mutation, which confers resistance to 3TC, suppresses AZT resistance. This benefit of 3TC may not extend to combination therapy with other nucleoside analogs.
NCT00000789
PRIMARY: To compare the relative safety and tolerance of oral zidovudine (AZT) versus oral stavudine (d4T) in symptomatic HIV-infected children. SECONDARY: To compare the clinical, virologic, and immunologic responses between the two treatment groups, and to obtain pharmacokinetic data for both drugs. At present, AZT is considered the drug of choice for initial treatment of most children with HIV infection, although disease progression or drug intolerance is associated with its long-term use. In preliminary studies in children, d4T, another HIV inhibitor, has been well tolerated, although an optimum dose has not been determined.
NCT00000727
To determine if the drug combination sulfamethoxazole-trimethoprim (SMX-TMP), given by mouth, and the drug pentamidine (PEN), given by inhaled aerosol, are effective in preventing a relapse of Pneumocystis carinii pneumonia (PCP) when they are given to patients who have recovered from a first episode of PCP and are being given zidovudine (AZT) to treat primary HIV infection. AZT prolongs survival in patients with AIDS and decreases the occurrence of opportunistic infections such as PCP. However, PCP recurs in about 43 percent of patients receiving AZT, indicating a need for other treatments to reduce the relapse rate. The two medications to be tested in this study, SMX/TMP and aerosolized PEN, have also been partially effective in preventing recurrence of PCP. It is hoped that the combination of AZT with these medications will be more effective than AZT or one of the medications alone.
NCT00000668
To determine the pharmacokinetics (blood levels) of three dose treatment plans of oral ganciclovir during a 28-day dosing period. Other purposes of the study are to determine in a population of HIV seropositive persons with cytomegalovirus (CMV) viremia, the safety, tolerance, and patient acceptability of oral ganciclovir given for 28 days, to collect preliminary laboratory evidence for antiviral activity and effectiveness of three dose regimens of oral ganciclovir based on blood and urine cultures of CMV, and to relate antiviral activity to dosage and to serum ganciclovir levels. CMV retinitis is an important sight-threatening opportunistic infection which affects about 10 to 15 percent of people with AIDS. A previous study has shown that treatment with ganciclovir resulted in a significant delay in time to first retinitis progression compared to untreated controls. More studies are warranted to evaluate effects at different doses.
NCT00000702
To test whether zidovudine (AZT) is useful as a treatment for the neurologic syndrome called AIDS dementia complex. To determine how long AZT takes to reach cerebral spinal fluid (CSF), how long, and at what concentration it is found there. HIV infection can result in impairment in the function of the brain and spinal cord, leading to disturbances in the ability to think clearly and in strength and coordination. This disorder, which has been called the AIDS dementia complex, may be due to a direct effect of HIV on the nervous system. It is known that AZT does get into the brain to some extent, where it may reduce growth of HIV. It is hoped that AZT will stabilize or improve the symptoms of the AIDS dementia complex.
NCT00000651
To evaluate the safety of zalcitabine (dideoxycytidine; ddC) alone and in combination with zidovudine (AZT) versus AZT alone when administered to asymptomatic patients with a CD4 count = or \< 200 cells/mm3 and symptomatic patients with a CD4 count = or \< 300 cells/mm3. To compare the effectiveness of ddC alone and in combination with AZT versus AZT alone. ddC has been shown to demonstrate an antiviral effect. AZT has been shown to significantly decrease mortality and reduce the frequency of opportunistic infections in patients with AIDS or advanced ARC. After 1 year of AZT therapy, the effectiveness tends to diminish and patients progress with more opportunistic infections and higher mortality rates. Because of the demonstrated antiviral activity, absence of hematologic toxicity, and lack of cross tolerance in laboratory studies of ddC, a study to investigate the long-term effectiveness of ddC in patients with HIV infection who have received AZT therapy is warranted.
NCT00000808
To determine the bioavailability, pharmacokinetics, and short-term safety and tolerance of nevirapine in HIV-1 infected pregnant women and their newborns when nevirapine is given to the mother during active labor, and when their neonates are dosed during the first week of life. To determine the short-term safety profile of mothers receiving zidovudine (AZT) who received nevirapine during active labor, and their neonates who received no dose, a single dose, or multiple doses of nevirapine and who are receiving AZT during the first 6 weeks of life. Treatment of HIV-1 infected pregnant women during active labor may result in therapeutic levels of nevirapine in the neonate at the time of exposure to HIV-1 during parturition, decreasing the neonate's risk of infection.
NCT00000748
To compare the safety and efficacy of two dosage regimens (daily and thrice-weekly) of sulfamethoxazole/trimethoprim (SMX/TMP; TMS) in the prevention of Pneumocystis carinii pneumonia (PCP) in high-risk HIV-infected patients. Previous tests have shown that SMX/TMP given daily is effective in preventing recurrence of PCP and may be effective in preventing PCP in patients who have never developed it. Because SMX/TMP can cause side effects, this study will attempt to determine the safest and most effective dose of this combination.
NCT00000762
To determine the safety and immunogenicity of gp160 (MicroGeneSys), rgp120/HIV-1MN (Genentech), and rgp120/HIV-1SF2 (BIOCINE) and their adjuvants in HIV-infected children 1 month to 18 years of age. The initiation of this immunotherapy trial will provide multiple benefits by assessing in asymptomatic HIV-infected children a therapy currently being tested in their adult counterparts, in the hope of forestalling the progression of HIV immunosuppression and clinical disease.
NCT00000970
To examine the safety and tolerance of the administration of ganciclovir and foscarnet given together or alternately; to determine the interactive pharmacokinetics (blood level) profile of long-term combined and alternating therapy with these two drugs. Additional objectives are to examine the effect of these treatments in controlling time to cytomegalovirus (CMV) retinitis progression and to examine the antiviral activity of combined and alternating ganciclovir/foscarnet treatment and development of antiviral resistance. Sight-threatening CMV retinitis occurs in at least 6 percent of AIDS patients. By 1991 (US), there may be 6000 to 10000 patients with CMV retinitis. Many clinical reports suggest that both ganciclovir (DHPG) and foscarnet have an antiviral effect against CMV that is often associated with clinical stabilization. Effectiveness of ganciclovir and foscarnet is correlated with weekly maintenance and since toxicity is dose-limiting in up to 20 percent of patients receiving either drug for long periods, it may be beneficial in long-term maintenance treatment to combine or alternate these two drugs at a lower total weekly dose of each drug. This strategy may result in a greater net antiviral effect with less toxicity than is seen with either drug alone, because the toxicities of each drug are quite different.
NCT00000753
To determine the safety, toxicity, pharmacokinetic profile, and antiretroviral activity of atevirdine mesylate ( U-87201E ) in HIV-infected patients. Per 06/04/93 amendment, to also evaluate the interactive effects of didanosine ( ddI ) or zalcitabine ( dideoxycytidine; ddC ) with zidovudine ( AZT ) on the pharmacokinetics of U-87201E and to assess the effects of the triple combination therapies on immunologic and virologic parameters. Since the use of non-nucleoside reverse transcriptase inhibitors such as U-87201E has been associated with the rapid development of resistant HIV isolates, an initial evaluation of this drug in patients was made in combination with AZT. Because of the inability to detect resistance after 6 weeks of combined AZT/U-87201E therapy, this protocol will initially investigate U-87201E administered alone and then investigate the effect of this drug with AZT and ddI or ddC.
NCT00000738
PRIMARY: To assess the safety of nimodipine in the treatment of HIV-Associated Motor / Cognitive Complex (formerly AIDS dementia complex). To assess the systemic or central nervous system toxicities (e.g., rash, headache, gastrointestinal symptoms, nausea, dyspnea, muscle pain or cramp, acne) of nimodipine. SECONDARY: To assess the efficacy of nimodipine in stabilizing the progression of HIV-Associated Motor / Cognitive Complex by improvement in neuropsychological test performance, peripheral neuropathy, or other neurologic manifestations. HIV-infected patients may develop a condition known as HIV-Associated Motor / Cognitive Complex (also known as AIDS dementia complex) that causes damage to the nervous system, particularly the brain and spinal cord. Evidence exists that nimodipine protects nerve cells in culture from injury by HIV. Although nimodipine has been used in patients with other neurological problems, its safety and effectiveness in halting the progression of HIV-Associated Motor / Cognitive Complex is not yet known.
NCT00001062
To determine whether alternating oral ganciclovir with intravenous ( IV ) ganciclovir can prevent relapse of Cytomegalovirus ( CMV ) retinitis and improve quality of life in AIDS patients. A systemic treatment strategy for CMV retinitis is needed that will be effective yet convenient to administer, without the need for a permanent indwelling IV catheter. Although oral ganciclovir has been used as maintenance following induction with IV ganciclovir, patients with reactivation of disease must be reinduced IV. A fixed-schedule regimen in which oral and IV ganciclovir are alternated may prevent reactivation and progression of disease, as opposed to the current therapeutic strategy in which changes in therapy are event-driven. Also, the duration of intermittent IV therapy required to control disease may be short enough to eliminate the need for an indwelling catheter.
NCT00000790
PRIMARY: To evaluate the effectiveness and safety of thalidomide for treatment of oral and esophageal aphthous ulcers (those unrelated to a known infection or malignancy) in patients with advanced HIV disease. To evaluate the effect of thalidomide on HIV load in this patient population. Per 06/28/94 amendment, to evaluate the effectiveness of thalidomide in preventing recurrences in patients whose aphthae completely heal at the end of acute treatment. SECONDARY: To evaluate the effect of thalidomide on blood tumor necrosis factor (TNF) levels and to obtain pharmacokinetic data on the drug. Per 06/28/94 amendment, to evaluate the safety of thalidomide. Per 05/10/95 amendment, to explore in a substudy the effects of thalidomide on idiopathic genital aphthous ulcers in HIV-infected women. Aphthous ulcers of the mouth or esophagus can interfere with eating, resulting in malnutrition and wasting. Thalidomide has been proposed as an effective therapy for severe forms of aphthous ulceration in AIDS patients.
NCT00000658
To determine the impact of dose intensity on tumor response and survival in patients with HIV-associated non-Hodgkin's lymphoma (NHL). HIV-infected patients are at increased risk for developing intermediate and high-grade NHL. While combination chemotherapy for aggressive B-cell NHL in the absence of immunodeficiency is highly effective, the outcome of therapy for patients with AIDS-associated NHL has been disappointing. Treatment is frequently complicated by the occurrence of multiple opportunistic infections, as well as the presence of poor bone marrow reserve, making the administration of standard doses of chemotherapy difficult. A recent study was completed using a low-dose modification of the standard mBACOD (cyclophosphamide, doxorubicin, vincristine, bleomycin, dexamethasone, methotrexate ) treatment. A 46 percent response rate was observed in patients treated with this combination of chemotherapeutic agents, with a number of durable remissions and reduced toxicity when compared to previous experience with more standard treatments. A subsequent study showed similar effectiveness using a lower dose of methotrexate administered on day 15. It is hoped that the use of sargramostim (granulocyte-macrophage colony-stimulating factor; GM-CSF) will improve bone marrow function and allow for administration of a higher dose of chemotherapy.
NCT00000844
To evaluate the effects of three preparations of low-dose oral interferon alpha (i.e., Alferon LDO, Veldona, and Ferimmune) on HIV symptoms in HIV-infected patients. To evaluate differences in response to oral interferon alpha according to gender, race/ethnicity, and use of antiretrovirals. Previous or ongoing clinical trials to test the efficacy of low-dose oral interferon alpha have produced different results, and it is not clear whether the differences were due to the interferon alpha products used or to problems in the study design. Therefore, three preparations will be compared to evaluate their potential efficacies.
NCT00000641
To compare the effectiveness and toxicity of two combination drug treatment programs for the treatment of disseminated Mycobacterium avium infection in HIV seropositive patients. \[Per 03/06/92 amendment: to evaluate the efficacy of azithromycin when given in conjunction with either ethambutol or clofazimine as maintenance therapy.\] Disseminated M. avium infection is the most common systemic bacterial infection complicating AIDS in the United States. The prognosis of patients with disseminated M. avium is extremely poor, particularly when it follows other opportunistic infections or is associated with anemia. Test tube studies and clinical data indicate that the best treatment program may include clofazimine, ethambutol, a rifamycin derivative, and ciprofloxacin. Test tube and animal studies indicate that amikacin is a bactericidal (bacteria destroying) drug that works better when used with ciprofloxacin. Its role in treatment programs is a key issue because of toxicity and because it must be administered parenterally (by injection or intravenously).
NCT00000657
To compare the safety and effectiveness of orally administered didanosine (ddI) with high dose orally administered zidovudine (AZT) in patients who develop or exhibit progression of the AIDS dementia complex (ADC) and who have not previously been intolerant to AZT at doses of up to 1000 mg/day. HIV-infected or AIDS patients may develop ADC which causes damage to the nervous system. ADC may be caused by some action of the AIDS virus on the nervous system, although similar problems can be caused by other infections because the AIDS virus lowers the body's ability to fight other infections. It is important to determine whether symptoms are due to ADC or to some other infection since treatment varies for different conditions. AZT has been shown to be beneficial to people with ADC although its effectiveness has only been studied in a small number of patients. Studies suggest that higher doses of AZT are more likely to be effective than standard doses in improving symptoms of ADC.
NCT00000847
To evaluate the safety and immunogenicity of high-titered ALVAC-HIV MN120TMG (vCP205) given sequentially or simultaneously with rgp120/HIV-1SF2 in MF59 adjuvant emulsion in HIV-negative volunteers. ALVAC-HIV vCP205 is a second-generation candidate vaccine that can be used to induce a humoral and cellular response against several antigens. vCP205 expresses proteins from two strains of HIV (MN and LAI). rgp120/HIV-1SF2 expresses proteins from a different strain of HIV. This study will help to show how the immune system responds to proteins from more than one strain of virus.
