View clinical trials related to Disease Susceptibility.
Filter by:Controlled human malaria infection (CHMI) is an important tool for the assessment of the efficacy of novel malaria vaccines and drugs prior to field trials. CHMI also allows for the evaluation of immunity to malaria and parasite growth rates in vivo and thus allows for the assessment of the natural acquisition and loss of malaria immunity. This may be particularly useful in individuals from endemic areas with changing levels of exposure and immunity to malaria. Thus, CHMI in individuals with prior exposure to malaria could be a valuable tool to accelerate malaria vaccine development and inform malaria control programs of changing immunity levels and related disease presentations. In this trial, the investigators intend to study the effect of pre-exposure to Plasmodium falciparum (Pf) on parasite kinetics, clinical symptoms and immunity after CHMI by PfSPZ Challenge in Gambian adults. Based on a well-defined sero-profile representing the extremes of current malaria exposure in The Gambia, two cohorts will be identified to study the impact of naturally acquired immunity on susceptibility for a Controlled Human Malaria Infection.
Evidence suggests that repeated or chronic ketamine use, as compared to acute ketamine users, posed a higher clinical risk of developing psychotic disorders, potentially related to the underlying chronic N-methyl-D-aspartate receptor (NMDAR) dysfunction, and a higher risk of suffering from schizophrenia particularly in those genetically susceptible, or genetically predisposed ketamine abusers. With ketamine infusion rises as a emerging hope as an acute treatment for depression and suicidality under the shadow of unknown longer term psychotomimetic effects peculiarly amongst repeated or chronic use, the current case-control study aims to investigate: a) if repeated or chronic ketamine use is associated with an increased risk of psychosis by comparing those ketamine abusers with and without psychosis, and to those non-ketamine-using drug abusers with psychosis; and b) if genetic predisposition from single nucleotide polymorphisms are associated with risk of psychosis in ketamine abusers.
An observational study was conducted in a health examination center to distinguish risk factors for health in a randomly recruited volunteers of Chinese population.
Smoking is the leading cause of avoidable death in the world. Smoking is associated with the development of cardiovascular and respiratory diseases, as well as being considered a leading cause of cancer death. Data show that smokers have increased cardiovascular risk in relation to former smokers, even in comparison with individuals who have had a long and intense history tobacco use. Considering this scenario, some drugs are used in tobacco cessation therapy. The first-line anti-smoking treatments approved by the Food and drug administration ( FDA ) are nicotinic reuptake therapy, bupropion ( norepinephrine and dopamine reuptake inhibitor) and varenicline ( partial agonist of nicotinic receptors composed of subunits alpha4Beta2 ). A metanalysis of 16 clinical studies indicated that smokers treated with bupropion had a higher abstinence rate compared to those receiving placebo - Odds ratio (OR ) - of 1,97 for treatment success. Varenicline is more effective compared to others smoking cessation drugs approved by the FDA, with an OR of 2,27 ( IC 95% 2,02-2,55 ) compared to placebo. However, Varenicline is much more expensive than bupropion. Significant advances in genetics have made the variability of the individual response to drugs, as far as efficacy as well as the rate of adverse effects, begin to be specifically investigated through pharmacogenetics studies.
This randomized controlled trial graduate student research study will explore the effect of non-surgical intervention of the dorsal application of Kinesio Tape for carpal tunnel syndrome, and forearm wrist hand pain.
The MilSeq Project is a nonrandomized, prospective pilot study of whole exome sequencing (WES) in the U.S. Air Force. The purpose of this study is to explore the implementation of WES into clinical medical care in the military health system.
RAPIDS-GN is a multi-center, prospective, randomized, controlled trial to evaluate the following strategies for patients with confirmed gram-negative bacillus bacteremia (GNB): 1. Standard culture and antimicrobial susceptibility testing (AST); or 2. Rapid identification and AST using the Accelerate PhenoTest™ BC Kit, performed on the Accelerate Pheno™ System (AXDX)
Knowledge of the precise location of endometriosis is essential for a successful surgical treatment. MRI Susceptibility-Weighted Imaging (SWI-MRI) yields high sensitivity for blood by-products detection. Since endometriosis lesions are haemorrhagic, and therefore rich in blood by-products such as hemosiderin, SWI-MRI could be useful in the pre-operative assessment of endometriosis, especially in superficial peritoneal lesion detection. The purpose of our study is to evaluate the performance of SWI-MRI for the preoperative work-up of endometriosis
Metformin is a classical oral antidiabetic drug, often recommended to be the first-choice treatment of type 2 diabetes mellitus (T2DM). Based on the previous research on PRKAA2, STK11 and diabetes, this study aimed to investigate the distributive characteristic of PRKAA2 and STK11 polymorphisms and the potential influence of STK11polymorphisms on metformin efficacy among Chinese T2DM patients, discuss the association of PRKAA2 polymorphisms between T2DM patients and healthy subjects.
Venous thromboembolism (VTE) is a common disease in cancer patients and one of the major causes of cancer-associated mortality. Risk for developing VTE increases when cancer patients are receiving chemotherapy. Current risk scores for predicting cancer-associated VTE in ambulatory patients had low/moderate discrimination and clinical sensitivity. These models use clinical and biochemical parameters of the patient. In the development of VTE genetics play a relevant role. The product Thrombo inCode (TiC) assess VTE risk prediction by using a combination of a genetic risk score (GRS) and clinical parameters from the patient. The investigators hypothesized that the GRS included in TiC combined with clinical parameter some of them associated with cancer could be better predicted by TiC than by current risk scores (Khorana score). After publishing the primary results in 2018, we have expanded the GRS in a external validation cohort adding gliomas and biliary tract tumors. Also we have incorporated the assessment of D-dimer in order to improve the predictive capability.