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Tuberculosis/HIV Coinfection

Ana Torrens, Patricia Bartholomay, Silvano Silva, Mohammed Khogali, Kristien Verdonck, Karen Bissell
Objective To assess the implementation of HIV-related interventions for patients with tuberculosis (TB), as well as TB treatment outcomes in patients coinfected with HIV in Brazil in 2011. Methods This was a cross-sectional, operational research study of HIV-related interventions among TB cases and the sociodemographic and clinical characteristics of TB-HIV coinfected patients. It also used a retrospective cohort design to determine the association between antiretroviral therapy (ART) and favorable TB treatment outcomes...
January 2016: Revista Panamericana de Salud Pública, Pan American Journal of Public Health
Gustavo Bergonzoli, Luis G Castellanos, Rodolfo Rodríguez, Lina María Garcia
Objectives To explore the relationships among social, economic, environmental, and health services determinants of tuberculosis (TB) morbidity and mortality, and to identify the mechanisms that mediate such associations in countries of Latin America and the Caribbean (LAC). Methods This was an ecological study of 26 LAC countries that had accurate data available on 38 selected variables for the year 2010. The countries represented 99% of the TB burden in LAC. Multivariate linear regression was used to identify associations among determinants of health and TB morbidity and mortality...
February 2016: Revista Panamericana de Salud Pública, Pan American Journal of Public Health
Susmita K Singh, Anna-Maria Andersson, Rada Ellegård, Cecilia S Lindestam Arlehamn, Alessandro Sette, Marie Larsson, Olle Stendahl, Robert Blomgran
HIV coinfection is the most prominent risk factor for progression of Mycobacterium tuberculosis (Mtb) infection into active tuberculosis (TB) disease. The mechanisms behind the increased transition from latent to active TB in coinfected individuals have not been well elucidated at the cellular level. We hypothesized that HIV infection contributes to Mtb pathogenesis by interfering with the dendritic cell (DC)-mediated immune control. Mtb-antigen processing and presentation are key events in the immune response against TB...
October 13, 2016: American Journal of Pathology
Jennifer K Roe, Niclas Thomas, Eliza Gil, Katharine Best, Evdokia Tsaliki, Stephen Morris-Jones, Sian Stafford, Nandi Simpson, Karolina D Witt, Benjamin Chain, Robert F Miller, Adrian Martineau, Mahdad Noursadeghi
BACKGROUND. Novel rapid diagnostics for active tuberculosis (TB) are required to overcome the time delays and inadequate sensitivity of current microbiological tests that are critically dependent on sampling the site of disease. Multiparametric blood transcriptomic signatures of TB have been described as potential diagnostic tests. We sought to identify the best transcript candidates as host biomarkers for active TB, extend the evaluation of their specificity by comparison with other infectious diseases, and to test their performance in both pulmonary and extrapulmonary TB...
October 6, 2016: JCI Insight
L A Enane, E D Lowenthal, T Arscott-Mills, M Matlhare, L S Smallcomb, B Kgwaadira, S E Coffin, A P Steenhoff
SETTING: Nine high-burden public tuberculosis (TB) clinics in Gaborone, Botswana. OBJECTIVE: To describe clinical characteristics and outcomes among adolescents with TB and compare loss to follow-up (LTFU) rates with that among youth and adult cases. DESIGN: Retrospective cohort study of TB cases registered from 2012 to 2014. Clinical characteristics and treatment outcomes were compared among adolescents (age 10-19 years), youth (20-24 years) and a systematic sample of adults (⩾25 years)...
October 2016: International Journal of Tuberculosis and Lung Disease
Giovanni Delogu, Valentina Vanini, Gilda Cuzzi, Teresa Chiacchio, Flavio De Maio, Basem Battah, Carmela Pinnetti, Alessandro Sampaolesi, Andrea Antinori, Delia Goletti
RATIONALE: 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. OBJECTIVE: 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...
September 16, 2016: Scandinavian Journal of Immunology
Ingrid V Bassett, Sharon M Coleman, Janet Giddy, Laura M Bogart, Christine E Chaisson, Douglas Ross, Margo M Jacobsen, Marion Robine, Tessa Govender, Kenneth A Freedberg, Jeffrey N Katz, Rochelle P Walensky, Elena Losina
BACKGROUND: A fraction of HIV-diagnosed individuals promptly initiate antiretroviral therapy (ART). We evaluated the efficacy of health system navigators for improving linkage to HIV and tuberculosis (TB) care among newly diagnosed HIV-infected outpatients in Durban, South Africa. METHODS: We conducted a randomized controlled trial (Sizanani Trial, NCT01188941) among adults (≥18 years) at 4 sites. Participants underwent TB screening and randomization into a health system navigator intervention or usual care...
October 1, 2016: Journal of Acquired Immune Deficiency Syndromes: JAIDS
Eduardo Ticona, Luz Huaroto, Daniela E Kirwan, Milagros Chumpitaz, César V Munayco, Mónica Maguiña, Marco A Tovar, Carlton A Evans, Roderick Escombe, Robert H Gilman
Multidrug-resistant tuberculosis (MDRTB) rates in a human immunodeficiency virus (HIV) care facility increased by the year 2000-56% of TB cases, eight times the national MDRTB rate. We reported the effect of tuberculosis infection control measures that were introduced in 2001 and that consisted of 1) building a respiratory isolation ward with mechanical ventilation, 2) triage segregation of patients, 3) relocation of waiting room to outdoors, 4) rapid sputum smear microscopy, and 5) culture/drug-susceptibility testing with the microscopic-observation drug-susceptibility assay...
September 12, 2016: American Journal of Tropical Medicine and Hygiene
Taylor W Foreman, Smriti Mehra, Denae N LoBato, Adel Malek, Xavier Alvarez, Nadia A Golden, Allison N Bucşan, Peter J Didier, Lara A Doyle-Meyers, Kasi E Russell-Lodrigue, Chad J Roy, James Blanchard, Marcelo J Kuroda, Andrew A Lackner, John Chan, Shabaana A Khader, William R Jacobs, Deepak Kaushal
The synergy between Mycobacterium tuberculosis (Mtb) and HIV in coinfected patients has profoundly impacted global mortality because of tuberculosis (TB) and AIDS. HIV significantly increases rates of reactivation of latent TB infection (LTBI) to active disease, with the decline in CD4(+) T cells believed to be the major causality. In this study, nonhuman primates were coinfected with Mtb and simian immunodeficiency virus (SIV), recapitulating human coinfection. A majority of animals exhibited rapid reactivation of Mtb replication, progressing to disseminated TB and increased SIV-associated pathology...
September 20, 2016: Proceedings of the National Academy of Sciences of the United States of America
Naveed Z Janjua, Margot Kuo, Amanda Yu, Maria Alvarez, Stanley Wong, Darrel Cook, Jason Wong, Jason Grebely, Zahid A Butt, Hasina Samji, Alnoor Ramji, Mark Tyndall, Mel Krajden
BACKGROUND: Population-level monitoring of hepatitis C virus (HCV) infected people across the cascade of care identifies gaps in access and engagement in care and treatment. We characterized a population-level cascade of care for HCV in British Columbia (BC), Canada and identified factors associated with leakage at each stage. METHODS: The BC Hepatitis Testers Cohort (BC-HTC) includes 1.5million individuals tested for HCV, HIV, reported cases of hepatitis B, and active tuberculosis in BC from 1990 to 2013 linked to medical visits, hospitalizations, cancers, prescription drugs and mortality data...
August 25, 2016: EBioMedicine
Hanna Nylén, Abiy Habtewold, Eyasu Makonnen, Getnet Yimer, Leif Bertilsson, Jürgen Burhenne, Ulf Diczfalusy, Eleni Aklillu
Initiation of efavirenz-based combination antiretroviral therapy (cART) is associated with Vitamin D deficiency, but the risk factors including efavirenz pharmacokinetics for cART-induced severe vitamin D deficiency (SVDD) and the impact of anti-tuberculosis (TB) cotreatment are not explored. We investigated the prevalence of SVDD in HIV and TB-HIV coinfected patients and associated risk factors for treatment-induced SVDD.Treatment-naïve Ethiopian HIV patients with (n = 102) or without (n = 89) TB co-infection were enrolled prospectively and received efavirenz-based cART...
August 2016: Medicine (Baltimore)
Desta Kassa, Leonie Ran, Wilco de Jager, Theo van den Broek, Ronald Jacobi, Muluberhan Mekonen, Tsehaynesh Messele, Mariëlle C Haks, Tom H M Ottenhoff, Debbie van Baarle
BACKGROUND: Transcriptomic host biomarkers could assist in developing effective diagnostics, vaccines and therapeutics for tuberculosis (TB). However, different biomarkers may be discriminatory in different populations depending on the host and bacillary genetics and HIV infection, and need to be addressed. METHODS: The expression levels of 45 genes that are known to be involved in or affected by TB pathogenesis were analyzed using dual color Reverse Transcriptase Multiplex Ligation-dependent Probe Amplification (dcRT-MLPA) assay in whole blood of 106 HIV positive individuals including active TB patients (TB(+)HIV(+), n = 29), and non TB patients that are tuberculin skin test positive (TST+) (TST(+)HIV(+), n = 26), or TST negative (TST(-)HIV(+), n = 51)...
September 2016: Tuberculosis
J D Jenks, N Kumarasamy, C Ezhilarasi, S Poongulali, P Ambrose, T Yepthomi, C Devaraj, C A Benson
SETTING: Y R Gaitonde Centre for AIDS Research and Education, Chennai, India. OBJECTIVE: To compare anti-tuberculosis treatment outcomes in individuals with human immunodeficiency virus (HIV) and tuberculosis (TB) co-infection on atazanavir/ritonavir (ATV/r) antiretroviral therapy (ART) plus daily rifabutin (RBT) 150 mg with those on ATV/r plus thrice-weekly RBT 150 mg. DESIGN: A retrospective study was conducted of two HIV-TB co-infected cohorts between 2003 and 2014...
September 2016: International Journal of Tuberculosis and Lung Disease
Tom Hiatt, Nobuyuki Nishikiori
INTRODUCTION: Since the year 2000, tuberculosis (TB) prevalence in the World Health Organization (WHO) Western Pacific Region decreased 36%. However, there were an estimated 1.6 million TB cases in the Region in 2013. This study describes a regional analysis using the WHO global TB database data from 2000 to 2013. METHODS: TB surveillance data are annually collected from 36 countries and areas in the Western Pacific Region using a web-based system. TB case notifications, treatment outcomes and information on TB/HIV coinfection are analysed descriptively...
April 2016: Western Pacific Surveillance and Response Journal: WPSAR
A A Olatunji, P O Olatunji, A A Salako
INTRODUCTION: The study was undertaken to assess chest radiographic features and lymphocyte counts among HIV-positive patients with TB coinfection. MATERIALS AND METHOD: We reviewed the chest radiographs of all newly diagnosed, treatment-naïve HIV-positive patients attending the Treatment Centre at the Olabisi Onabanjo University Teaching Hospital, Sagamu, Nigeria. The radiographs were examined for presence or absence of features of tuberculosis and pneumonia. Those with tuberculosis were further evaluated for presence of cavities and milliary appearance...
April 2016: Indian Journal of Tuberculosis
Senedu Bekele Gebreegziabher, Gunnar Aksel Bjune, Solomon Abebe Yimer
BACKGROUND: delay in diagnosis and treatment of tuberculosis (TB) may worsen the disease, increase mortality and enhance transmission in the community. This study aimed at assessing the association between total delay and unfavorable treatment outcome among newly diagnosed pulmonary TB (PTB) patients. METHODS: A prospective cohort study was conducted in West Gojjam Zone, Amhara Region of Ethiopia from October 2013 to May 2015. Newly diagnosed PTB patients who were ≥15 years of age were consecutively enrolled in the study from 30 randomly selected public health facilities...
2016: PloS One
Caio Mauricio Mendes de Cordova, Caroline Galgowski, Leonardo Lange
Background. Mycoplasmas are known to cause various infections in humans, mainly in the respiratory and urogenital tracts. The different species are usually host-specific and cause diseases in well-defined sites. New species have been isolated, including those from HIV-infected persons. Summary. Its in vitro properties, combined with clinical findings, have led to the hypothesis that these microorganisms may act as cofactors of HIV in AIDS development. Even today this point of view is quite polemic among infectious disease specialists and many aspects remain to be clarified, in contrast to what happens, for instance, with HIV/Mycobacterium tuberculosis coinfection...
2016: Canadian Journal of Infectious Diseases & Medical Microbiology
Sabine Bélard, Jonathan Remppis, Sanne Bootsma, Saskia Janssen, Davy U Kombila, Justin O Beyeme, Elie G Rossatanga, Cosme Kokou, Kara K Osbak, Régis M Obiang Mba, Harry M Kaba, Afsatou N Traoré, Jonas Ehrhardt, Emmanuel B Bache, Arnaud Flamen, Sabine Rüsch-Gerdes, Matthias Frank, Ayôla A Adegnika, Bertrand Lell, Stefan Niemann, Peter G Kremsner, Marguerite M Loembé, Abraham S Alabi, Martin P Grobusch
Despite overall global progress in tuberculosis (TB) control, TB remains one of the deadliest communicable diseases. This study prospectively assessed TB epidemiology in Lambaréné, Gabon, a Central African country ranking 10th in terms of TB incidence rate in the 2014 World Health Organization TB report. In Lambaréné, between 2012 and 2014, 201 adult and pediatric TB patients were enrolled and followed up; 66% had bacteriologically confirmed TB and 95% had pulmonary TB. The human immunodeficiency virus (HIV) coinfection rate was 42% in adults and 16% in children...
August 3, 2016: American Journal of Tropical Medicine and Hygiene
Violette Dirix, Kinda Schepers, Marguerite Massinga-Loembe, William Worodria, Robert Colebunders, Mahavir Singh, Camille Locht, Luc Kestens, Françoise Mascart
OBJECTIVES: To investigate whether mycobacterial antigen-induced cytokine secretions are helpful in detecting Mycobacterium tuberculosis (Mtb) infection in a cohort of HIV-infected patients living in a country with a high burden of Mtb and HIV infections, and to determine their predictive value for the development of tuberculosis (TB)-associated immune reconstitution inflammatory syndrome. DESIGN: A total of 352 HIV-infected patients (186 with active TB) were prospectively enrolled when initiating antiretroviral therapy (ART)...
July 1, 2016: Journal of Acquired Immune Deficiency Syndromes: JAIDS
G Sánchez-González
OBJECTIVES: The objective of this study was to estimate the cost-effectiveness of treating patients infected with HIV and simultaneously coinfected with tuberculosis (TB) and hepatitis C virus (HCV). METHODS: A mathematical model for HIV coinfection with TB and HCV is introduced. The model was designed to incorporate parameters of control for the coverage of care, which makes it useful for performing cost-effectiveness analysis of public policies. A cost-effectiveness analysis of early medical care of patients with TB and HCV coinfection, with coverage of 0 (basal), 25, 50, 75 and 100%, was performed for the whole cohort of patients and a special analysis was performed in a selected population with triple infection...
October 2016: HIV Medicine
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