View clinical trials related to Staphylococcus Aureus.
Filter by:Atopic dermatitis (AD) is the most common chronic inflammatory skin disorder, with a lifetime prevalence of 15-25% in children and 1-3% in adults worldwide. AD is a heterogeneous disease induced by multiple factors, including genetic mutation and environmental risk factors. The main inflammatory mechanism that contributed to AD is the immune response mediated by T helper 2 (Th2) cells. The clinical features of AD, such as recurrent eczematous lesions, IgE-mediated intense itch, and the disruption of skin barrier induced by abnormal epidermal cell differentiation and protein structures, etc., can be attributed to the secretion of Th2 cell-related cytokines. AD is likely to be a lifelong illness with repeated onsets, causing not only physiological discomfort but also psychological distress; hence the quality of life of AD patients is inevitably affected. Lactic acid is a natural moisturizing factor, which exists in healthy skin. It can efficiently prevent water loss from the skin and alleviate allergic reactions caused by dry skin. The moisturized function of lactic acid has made it became a commonly used additive in a wide variety of skincare products, such as lotion, cream, butter and spray. This product is rich in natural lactic acid generated by the fermentation of probiotics, and therefore can relieve skin itching caused by skin dryness, and resume the water-holding capability of the skin by removing abnormally proliferative stratum corneum as well as inducing collagen production. Importantly, this product is a steroid-free product with safety and without any induced adverse effects in use. This product is also can be a promising option other than steroids to be applied for the mitigation of recurrent symptoms in atopic dermatitis by resuming the water-retention ability of skin and rebuilding skin barrier function.
Two commonly used treatments for latent tuberculosis infection are either 4 months rifampicin or 6-9 months isoniazid. The invistigators will study the risk of acquisition of rifampicin resistance in commensal Staphylococcus aureus in persons treated with rifampicin versus in persons treated with isoniazide. Through repeated swab cultures before, during, and after treatment the investigators will also investigate potential accumulation of mutations associated with rifampicin resistance over time. Finally, household contacts to persons with rifampicin-resistant S. aureus will be examined to investigate whether onward transmission of rifampicin-resistant S. aureus occurs within households.
This study will determine the frequency of Staphylococcus aureus carriage in household contacts of individuals with clinical infection due to this pathogen. It will also assess the frequency of transmission events over the following three months. Finally it will aim to identify predisposing characteristics both on a demographic/social level as well virulence characteristics of the identified strains.
Surgical site infections (SSI) are a significant clinical issue that requires the use of a great amount of resources. In particular, periprosthetic joint infections (PJIs) have potentially catastrophic effects on patients' health-related quality of life, function, healthcare costs, outcomes and medical implications. National surveillance estimates may under-report the true incidence and when considering the large number of total hip (THA) and total knee arthroplasty (TKA) procedures performed each year. Patients who have a high-level of nasal bacteria have been found to have a risk of surgical site infection that is three to six times the risk compared with noncarriers and low-level carriers. The association between a patient's nasal carriage of S. aureus, specifically MRSA, and PJI has been demonstrated in a systematic review and confirmed in recent cohort studies. While this association seems to be well accepted, no mechanistic explanation has been provided for this association.
The aims of this study were to evaluate the diagnostic performance of molecular and culture techniques in S. aureus screening using paired nasal and groin swabs, to determine, if any, discrepancy between the diagnostic techniques and to model the potential effect of different diagnostic techniques on S. aureus detection in orthopaedic patients
Atopic dermatitis (AD) is the most common chronic inflammatory skin disease. Clinical studies have demonstrated a link between staphylococcal skin colonization and the pathogenesis of AD, but the implication of bacterial virulence factors remains largely uncharacterized. Finally, AD is often associated with herpes simplex skin infections. The aim of this project is to investigate the role of staphylococcal toxins in the exacerbation and maintenance of atopic skin inflammation and in the occurrence of infectious complications such as eczema herpeticum.
This pilot study is designed to determine if ingestion of Bacillus probiotics can cause alteration in levels of S. aureus colonization in the nose and intestine in preoperative orthopedic patients undergoing elective primary TJA.
This project will assess the feasibility of a cluster-randomized trial with crossover of our intervention, targeted gown and glove use, among high-risk residents of community nursing homes to prevent Staphylococcus aureus and carbapenem gram negative bacteria acquisition and infection.
Surgical site infections in orthopaedic surgery are a major problem. Decolonization has been suggested to reduce infection rates. The study was designed as a prospective, controlled, randomized, single-blinded trial to assess the influence of a decolonization procedure in S. aureus and non - S. aureus carriers. In this trial the 2 - year outcome in the subpopulation of prosthetic elective orthopaedic surgery will be evaluated.
Our previous studies delineate a novel pathway of immune activation in animals that the investigators have named Anti-Virulence Immunity (AVI). Using a mice model of bacteremia, the investigators have demonstrated that Escherichia coli Cytotoxic Necrotizing Factor 1 (CNF1) activity is sensed by the immune system. This immune sensing results in a rapid bacterial clearing during bacteremia triggered by uropathogenic E. coli-expressing CNF1. The investigators already confirmed the involvement of one inflammasome using macrophages isolated from Knock-out mice. The investigators have recently determined the conservation in human monocytes of the interleukin -1beta maturation triggered by CNF1 and observed the heterogeneous capacity of monocytes to respond to the CNF1 treatment depending on the donors. Here, to determine the importance in natura of AVI the investigators will analyze the blood content of patients presenting E. coli and S. aureus bacteremia. The DNA of monocytes isolated from patients will be extracted and various genes implicated in the activity of various inflammasomes will be sequenced to identify mutations that could explain the susceptibility to bacteremia or a specific clinical presentation, i.e. requirement of a management in ICU because of organ failure.