View clinical trials related to Leishmaniasis.
Filter by:This study will evaluate the of the loop-mediated amplification assay (LAMP) as a diagnostic as well as a Test-of-Cure (ToC) for visceral leishmaniasis (VL) in an endemic area in Ethiopia. Furthermore, we aim to further development of the direct-blood PCR-Nucleic Acid Lateral-Flow Immuno-Assay (dB-PCR-NALFIA) as a novel diagnostic tool for VL and its subsequent evaluation in the field.
The disease leishmaniasis mainly occurs in hot and tropical countries, affects millions of people and causes around 20,000 deaths across the world every year. Leishmaniasis is caused by the Leishmania parasite and is transmitted by sand flies. The parasite is tiny and not visible to the naked eye, whereas the particular sand fly is visible but small and inconspicuous. There are different types of leishmaniasis around the world and some can be very serious. They affect the skin (cutaneous leishmaniasis) or the internal organs of the body (visceral leishmaniasis). Some of the milder forms will produce skin problems which will be localised, whilst other forms of leishmaniasis will cause widespread skin changes. The skin lesions of cutaneous leishmaniasis can be disfiguring if left untreated. There are some treatments for leishmaniasis available but many of them are not easy to use or don't work well. Therefore new treatments and vaccines are needed that prevent or work against leishmaniasis. A solution being adopted for other diseases, which the investigators now wish to adopt for leishmaniasis is to develop a 'Controlled human infection model' (CHIM). These models involve deliberate exposure of individuals to an infection, in order to better understand how the disease works and to test potential vaccines and treatments. They have contributed vital scientific knowledge that has led to advances in the development of drugs and vaccines. This is an initial study using uninfected (disease-free) sand flies, taking place at the University of York. The information from this study will help us to develop a model in the future using infected sand flies so that the investigators can assess any future vaccines against Leishmaniasis. The investigators will also hold a focus group after the sand fly biting study to explore the experiences of individuals taking part in this study.
HIV patients are likely to suffer from opportunistic infections, in absence of highly active retroviral therapy. This happens due to lack of awareness of HIV status among patients or unresponsive to anti retroviral drugs. This study is for the prevalence of AIDS defining OIs among treatment naive HIV patients.
This trial is designed to assess the therapeutic efficacy and safety of CHAd63-KH, a new candidate Leishmania vaccine, in patients with persistent PKDL. 100 participants will be randomly assigned (50 participants in each arm) to receive placebo or ChAd63-KH 7.5 x10(10)vp. Doses will be administered at a single time point.
This study will evaluate how the test medicine DNDI-0690 is taken up and broken down by the body and will also look at the safety and tolerability of the test medicine after a single dose. This is the first time the test medicine DNDI-0690 will be administered to humans.
The performance of the CL Detect Rapid test will be tested in individuals with suspected cutaneous leishmaniasis in Ethiopia using both skin slit and dental broach samples against a combined reference of microscopy and PCR. Alternative sampling methods will also be evaluated.
Cure rate for L braziliensis bolivian CL has been 70%-80% for standard systemic and local monotherapies. It would benefit patients if cure rates could be consistently >90%, so testing a combination of two treatments is proposed. The most attractive systemic therapy is the only oral agent, miltefosine during 28 days, and the most attractive local therapy is application of Paromomycin cream for 28 days.
According to recent estimates by the World Health Organization (WHO) on eastern Africa, not all visceral leishmaniasis (VL) cases reported are confirmed by a laboratory test, probably due to limited access to accurate diagnostic tests and poor reporting. The main approach for VL diagnosis involves antibody detection using the rK39 rapid diagnostic test (RDT) and alternatively the direct agglutination test (DAT) to confirm clinically suspected cases. Suspected cases with negative rK39 RDT and/or DAT results are referred to facilities where examination of tissue aspirate (spleen, bone marrow, lymph node) by microscopy is available. Unfortunately, the diagnostic performance of rK39 in eastern Africa is suboptimal, particularly in settings with a high VL/HIV co-infection rate. A recently developed RDT, based on the recombinant antigen rK28, may overcome this problem, with studies reporting better performance than the rK39. However, data are not definitive, as studies comparing rK28 RDTs with rK39 RDT are limited. Another recently developed RDT detects immunoglobulin G1 (IgG1) specific to Leishmania and has shown promising results in the Indian subcontinent. This study aims to undertake a multi-country assessment of the performance of rK28 and IgG1 RDTs, as compared to the currently used rK39 RDT.
Background: Mosquitoes and similar insects called sand flies carry parasites that can cause diseases. These viruses and parasites can spread quickly and be difficult to control. How people s bodies respond to insect bites may affect how they get infected. The response to bites is caused by the immune system, which helps fight off infections. Researchers want to study the immune response in skin to mosquito or sand fly bites and how the response changes after bites on multiple days. This may help researchers develop better vaccines. Objective: To study the immune response in skin to certain insect bites and how that changes after bites on multiple days. Eligibility: Healthy adults ages 18-64 Design: Participants will be screened under another protocol. Women must agree to practice effective contraception or abstinence. All participants must agree to not donate blood or use certain lotions or creams on visit days. Some participants will have 2 visits over a week. Others will have 5 visits over 8 weeks. All participants will have the following at least once: Medical history Physical exam Blood and urine collected Mosquito or sand fly feeding. Up to 10 insects will feed on participant s arm for up to 20 minutes. The insects are grown at NIH and do not carry any diseases. The skin will be checked and bites will be treated. Skin samples taken. The skin will be cleaned and numbed. A tool will remove a small piece of skin from 3 places on the arm. About a week after the last visit, participants will be called to see how they feel.
The primary objective is to determine clinical bioequivalence of Amphotericin B liposome for injection of Auromedics Pharma LLC, USA and AmBisome (Amphotericin B) liposome for injection of Astellas Pharma US, Inc., in patients with Visceral Leishmaniasis under fed condition