Evaluation of the transcriptional immune biomarkers in peripheral blood from Warao indigenous associate with the infection by Mycobacterium tuberculosis

CONCLUSIONS: Preliminary findings showed that MMP9 immune biomarkers separated LTBI indigenous individuals from NIC indigenous individuals, while CCR5, CCL11, CD14, and IFN- γ did not differentiate TB states from NIC. MMP9 may be useful as a potential biomarker for LTBI and new infected case detection among Warao indigenous individuals at high risk of developing the disease. It may also be used to halt the epidemic, which will require further validation in larger studies.
Source: Revista da Sociedade Brasileira de Medicina Tropical - Category: Tropical Medicine Source Type: research

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Bacillus Calmette Guérin (BCG) is the only currently available vaccine against tuberculosis (TB), but it confers incomplete and variable protection against pulmonary TB in humans and bovine TB (bTB) in cattle. Insights into the immune response induced by BCG offer an underexploited opportunity to gain knowledge that may inform the design of a more efficacious vaccine, which is urgently needed to control these major global epidemics. Humoral immunity in TB and bTB has been neglected, but recent studies supporting a role for antibodies in protection against TB has driven a growing interest in determining their relevan...
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
CONCLUSIONS: Preliminary findings showed that MMP9 immune biomarkers separated LTBI indigenous individuals from NIC indigenous individuals, while CCR5, CCL11, CD14, and IFN- γ did not differentiate TB states from NIC. MMP9 may be useful as a potential biomarker for LTBI and new infected case detection among Warao indigenous individuals at high risk of developing the disease. It may also be used to halt the epidemic, which will require further validation in larger studies.
Source: Revista da Sociedade Brasileira de Medicina Tropical - Category: Tropical Medicine Source Type: research
The widespread availability and use of modern synthetic therapeutic agents have led to a massive decline in ethnomedical therapies. However, these synthetic agents often possess toxicity leading to various adverse effects. For instance, anti-tubercular treatment (ATT) is toxic, lengthy, and severely impairs host immunity, resulting in posttreatment vulnerability to reinfection and reactivation of tuberculosis (TB). Incomplete ATT enhances the risk for the generation of multidrug- or extensively drug-resistant (MDR or XDR, respectively) variants of Mycobacterium tuberculosis (M. tb), the TB-causing microbe. Therefore, a new...
Source: Journal of Biological Chemistry - Category: Chemistry Authors: Tags: Immunology Source Type: research
Tuberculosis infects one quarter of the world’s population and is the leading cause of death by a single infectious agent, responsible for a reported 1.3 million deaths in 2017. While Mycobacterium tuberculosis is treatable with antibiotic therapy, the increased prevalence of drug resistance, coupled with the variable efficacy of the only widely approved vaccine, has highlighted the need for creative approaches to therapeutic and vaccine development. Historically, a productive immune response to M. tuberculosis has been thought to be nearly entirely cell-mediated, with humoral immunity being largely dismissed. Howeve...
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
Conclusion: The Mtb infection status had a significant impact on mycobacterial growth inhibition in PBMC from healthy adults in South Korea, a country with an intermediate burden of tuberculosis, with healthy controls showing the greatest mycobacterial growth inhibition. Introduction Pulmonary tuberculosis (TB) is an airborne infectious disease caused by Mycobacterium tuberculosis (Mtb), which is a significant burden for the world, reaching 9.6 million new TB cases and 1.5 million deaths per year (1). Also, just under a quarter of the global population is latently infected with Mtb, and 5–10% of them will dev...
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
Jeffrey G. Shaffer1*, Frances J. Mather1, Mamadou Wele2, Jian Li1, Cheick Oumar Tangara2, Yaya Kassogue2, Sudesh K. Srivastav1, Oumar Thiero2, Mahamadou Diakite2, Modibo Sangare2, Djeneba Dabitao2, Mahamoudou Toure2, Abdoulaye A. Djimde2, Sekou Traore2, Brehima Diakite2, Mamadou B. Coulibaly2, Yaozhong Liu1, Michelle Lacey3, John J. Lefante1, Ousmane Koita2, John S. Schieffelin4, Donald J. Krogstad1 and Seydou O. Doumbia2 1Department of Global Biostatistics and Data Science, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, United States 2Faculty of Medicine and Odontostomatology, Un...
Source: Frontiers in Genetics - Category: Genetics & Stem Cells Source Type: research
In conclusion, our findings demonstrate that in the presence of an HIV-1 infection, the cellular distribution of FcγRIIIa is altered and that the functional consequence of FcγRIIIa variant is affected. Importantly, it underscores the need to characterize FcγR expression, cellular distribution and functional consequences of FcγR genetic variants within a specific environment or disease state. Introduction Receptors for the Fc domain of immunoglobulin G (IgG), so called Fc gamma receptors (FcγRs), link the specificity of IgG with potent effector functions of the innate immune system. Fc&ga...
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
In this study, we investigated the immunological changes in the levels of monocytes and Tregs and the associations between these cell types in HIV-1-infected MSM with syphilis. Methods Study Participants We enrolled 81 participants in this study. These individuals were assigned to four groups on the basis of serologic testing and HIV-1 results, namely, the rapid plasma reagin (RPR+) group, the CHI group, the CHI&RPR+ group, and the healthy control group. HIV-1 infection status was determined with the HIV-1/2 antigen/antibody combo enzyme immunoassay (Beijing Wantai Biological Medical Company, Beijing, China). Positive ...
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
Publication date: Available online 11 March 2019Source: The LancetAuthor(s): Kathleen R Page, Shannon Doocy, Feliciano Reyna Ganteaume, Julio S Castro, Paul Spiegel, Chris BeyrerSummaryThe economic crisis in Venezuela has eroded the country's health-care infrastructure and threatened the public health of its people. Shortages in medications, health supplies, interruptions of basic utilities at health-care facilities, and the emigration of health-care workers have led to a progressive decline in the operational capacity of health care. The effect of the crisis on public health has been difficult to quantify since the Venezu...
Source: The Lancet - Category: General Medicine Source Type: research
(CNN) — From climate change to superbugs, the World Health Organization has laid out 10 big threats to our global health in 2019. And unless these threats get addressed, millions of lives will be in jeopardy. Here’s a snapshot of 10 urgent health issues, according to the United Nations’ public health agency: Not vaccinating when you can One of the most controversial recent health topics in the US is now an international concern. “Vaccine hesitancy — the reluctance or refusal to vaccinate despite the availability of vaccines — threatens to reverse progress made in tackling vaccine-prevent...
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