Publications by authors named "A Sampaolesi"
Risk and predictive factors of prolonged viral RNA shedding in upper respiratory specimens in a large cohort of COVID-19 patients admitted to an Italian reference hospital.
Int J Infect Dis
April 2021
Article Synopsis
- The study analyzed COVID-19 patients in a hospital in Italy to explore factors influencing prolonged SARS-CoV-2 RNA shedding and viral clearance.
- It found that patients with comorbidities, lymphopenia, or moderate/severe respiratory issues had lower chances of viral clearance, with a median viral shedding duration of 18 days.
- Achieving viral clearance significantly improved clinical recovery rates and reduced the risk of death or the need for mechanical ventilation, emphasizing the necessity for timely hospital admission for symptomatic patients.
Background: Human Immunodeficiency Virus (HIV) infection is a risk factor for tuberculosis (TB). Antiretroviral therapy (ART) changed HIV clinical management but it is still unclear how pre-existing HIV/Mycobacterium tuberculosis (Mtb)-specific CD4 and CD8 T-cells are restored.
Aim: to evaluate the impact of ART and TB therapies on the functional and phenotypic profile of Mtb-specific antigen-response of CD4 and CD8 T-cells in prospectively enrolled HIV-TB co-infected patients.
Introduction: RD1-based Interferon-γ Release Assays (IGRAs) cannot distinguish latent from active tuberculosis (TB) disease. Conversely, a positive response to heparin-binding haemagglutinin (HBHA)-based IGRAs, among TB-infected subjects, correlates with Mycobacterium tuberculosis (Mtb) containment and low risk of TB progression. The aim of this study was to characterize HBHA-immune responses in HIV-infected and uninfected subjects with active TB or latent TB infection (LTBI).
View Article and Find Full Text PDFLack of Response to HBHA in HIV-Infected Patients with Latent Tuberculosis Infection.
Scand J Immunol
December 2016
Heparin-binding haemagglutinin (HBHA) has been proposed as an immunological biomarker for discriminating active tuberculosis (TB) from latent TB infection (LTBI) and to identify those at higher risk of progressing to active disease. Few data are available in immune-compromised patients, which are those with increased risk of TB reactivation. The aim of this stusy was to evaluate the immune response to HBHA in HIV-infected subjects with LTBI (HIV-LTBI) or active TB (HIV-TB) in comparison with the immune response to additional Mycobacterium tuberculosis (Mtb) or HIV and CMV antigens.
View Article and Find Full Text PDFImmune Status and Serial Quantiferon-TB Gold In-Tube Screening for Latent Mycobacterium tuberculosis Infection Among HIV-Infected Persons in a Country With a Low Tuberculosis Incidence.
J Infect Dis
June 2015