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Tuberculosis biomarker

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https://www.readbyqxmd.com/read/27931342/evaluation-of-serum-inflammatory-biomarkers-as-predictors-of-treatment-outcome-in-pulmonary-tuberculosis
#1
A Singanayagam, K Manalan, D W Connell, J D Chalmers, S Sridhar, A I Ritchie, A Lalvani, M Wickremasinghe, O M Kon
OBJECTIVE: To evaluate C-reactive protein (CRP), globulin and white blood cell (WBC) count as predictors of treatment outcome in pulmonary tuberculosis (PTB). METHODS: An observational study of patients with active PTB was conducted at a tertiary centre. All patients had serum CRP, globulin and WBC measured at baseline and at 2 months following commencement of treatment. The outcome of interest was requirement for extension of treatment beyond 6 months. RESULTS: There were 226 patients included in the study...
December 2016: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/27904945/-sarcoidosis-and-uveitis-an-update
#2
REVIEW
J G Garweg
Ocular involvement in sarcoidosis is present in up to one third of patients and is frequently manifested before the underlying systemic disease has been diagnosed. With a view to the therapeutic consequences an early diagnosis of the underlying disease is advantageous. In cases of visual loss early diagnostic measures include invasive procedures, such as ultrasound-guided bronchoalveolar lavage and transbronchial biopsy, if nodular conjunctival or cutaneous manifestations which would confirm the diagnosis are not present...
November 30, 2016: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/27897233/changes-in-the-membrane-associated-proteins-of-exosomes-released-from-human-macrophages-after-mycobacterium-tuberculosis-infection
#3
Gustavo Diaz, Lisa M Wolfe, Nicole A Kruh-Garcia, Karen M Dobos
Tuberculosis (TB) is the deadliest infectious disease worldwide. One obstacle hindering the elimination of TB is our lack of understanding of host-pathogen interactions. Exosomes, naturally loaded with microbial molecules, are circulating markers of TB. Changes in the host protein composition of exosomes from Mycobacterium tuberculosis (Mtb)-infected cells have not been described, can contribute to our understanding of the disease process, and serve as a direct source of biomarkers or as capture targets to enrich for exosomes containing microbial molecules...
November 29, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27892960/new-genome-wide-algorithm-identifies-novel-in-vivo-expressed-mycobacterium-tuberculosis-antigens-inducing-human-t-cell-responses-with-classical-and-unconventional-cytokine-profiles
#4
Mariateresa Coppola, Krista E van Meijgaarden, Kees L M C Franken, Susanna Commandeur, Gregory Dolganov, Igor Kramnik, Gary K Schoolnik, Inaki Comas, Ole Lund, Corine Prins, Susan J F van den Eeden, Gro E Korsvold, Fredrik Oftung, Annemieke Geluk, Tom H M Ottenhoff
New strategies are needed to develop better tools to control TB, including identification of novel antigens for vaccination. Such Mtb antigens must be expressed during Mtb infection in the major target organ, the lung, and must be capable of eliciting human immune responses. Using genome-wide transcriptomics of Mtb infected lungs we developed data sets and methods to identify IVE-TB (in-vivo expressed Mtb) antigens expressed in the lung. Quantitative expression analysis of 2,068 Mtb genes from the predicted first operons identified the most upregulated IVE-TB genes during in-vivo pulmonary infection...
November 28, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27879161/neopterin-and-oxidative-stress-markers-in-the-diagnosis-of-extrapulmonary-tuberculosis
#5
Nisha Goyal, Bineeta Kashyap, N P Singh, Iqbal R Kaur
BACKGROUND: Extrapulmonary tuberculosis (EPTB) often presents with non-specific signs and symptoms. Further the paucibacillary nature of extrapulmonary specimens and irregular distribution of bacilli lower the sensitivity of conventional diagnostic methods making EPTB, a diagnostic dilemma. Objective To study neopterin, protein carbonyl and malondialdehyde in extrapulmonary tuberculosis. METHODS: 69 clinically confirmed cases with an equal number of age and sex matched healthy controls were enrolled...
November 23, 2016: Biomarkers: Biochemical Indicators of Exposure, Response, and Susceptibility to Chemicals
https://www.readbyqxmd.com/read/27871809/biomarkers-for-discrimination-between-latent-tuberculosis-infection-and-active-tuberculosis-disease
#6
Eun-Jeong Won, Jung-Ho Choi, Young-Nan Cho, Hye-Mi Jin, Hae Jin Kee, Yong-Wook Park, Yong-Soo Kwon, Seung-Jung Kee
OBJECTIVE: We aimed to determine whether combinations of multiplex cytokine responses could differentiate Mycobacterium tuberculosis (Mtb) infection states. METHODS: Mtb-specific antigen-induced and unstimulated cytokines were measured by Luminex assay in supernatants of QuantiFERON(®) Gold In-Tube assay (QFT) in 48 active pulmonary TB patients (TB), 15 latent TB infection subjects (LTBI), and 13 healthy controls (HCs). RESULTS: Among the 29 cytokines, eight Mtb antigen-specific biomarkers (GM-CSF, IFN-γ, IL-1RA, IL-2, IL-3, IL-13, IP-10, and MIP-1β) in the Mtb-infected group were significantly different from those of the HCs...
November 19, 2016: Journal of Infection
https://www.readbyqxmd.com/read/27867751/t7-phage-display-library-a-promising-strategy-to-detect-tuberculosis-specific-biomarkers
#7
Harvinder Talwar, Jaya Talreja, Lobelia Samavati
One-third of the world's population is infected with tuberculosis, only 10% will develop active disease and the remaining 90% is considered to have latent TB (LTB). While active TB is contagious and can be lethal, the LTB can evolve to active TB. The diagnosis of TB can be challenging, especially in the early stages, due to the variability in presentation and nonspecific signs and symptoms. Currently, we have limited tools available to diagnose active TB, predict treatment efficacy and cure of active tuberculosis, the reactivation of latent tuberculosis infection, and the induction of protective immune responses through vaccination...
June 2016: Mycobacterial Diseases: Tuberculosis & Leprosy
https://www.readbyqxmd.com/read/27865387/microrna-expression-signatures-in-lungs-of-mice-infected-with-mycobacterium-tuberculosis
#8
Thiago Malardo, Luiz Gustavo Gardinassi, Bernardo Pereira Moreira, Éverton Padilha, Júlio César Cetrulo Lorenzi, Luana Silva Soares, Ana Flávia Gembre, Isabela Cardoso Fontoura, Luciana Previato de Almeida, Isabel Kinney Ferreira de Miranda Santos, Célio Lopes Silva, Arlete Aparecida Martins Coelho-Castelo
Tuberculosis (TB) is a major public health concern worldwide; however the factors that account for resistance or susceptibility to disease are not completely understood. Although some studies suggest that the differential expression of miRNAs in peripheral blood of TB patients could be useful as biomarkers of active disease, their involvement during the inflammatory process in lungs of infected individuals is unknown. Here, we evaluated the global expression of miRNAs in the lungs of mice experimentally infected with Mycobacterium tuberculosis on 30 and 60 days post-infection...
December 2016: Tuberculosis
https://www.readbyqxmd.com/read/27865378/development-of-immune-biomarkers-of-pulmonary-tuberculosis-in-a-rabbit-model
#9
Ali Dehnad, Resmi Ravindran, Selvakumar Subbian, Imran H Khan
Tuberculosis (TB) causes extensive morbidity and mortality worldwide with approximately 10 million new cases of active disease emerging mostly from a pool of two billion individuals latently infected with Mycobacterium tuberculosis (M. tb) every year. The underlying host immune responses that drive M. tb infection to active disease or latency are not well understood. We propose that identification and characterization of host immune biomarkers will be helpful to better understand the mechanisms that drive this process, and may, in addition, lead to the development of better diagnostic tools for TB...
December 2016: Tuberculosis
https://www.readbyqxmd.com/read/27861525/elevated-neopterin-levels-are-associated-with-increased-tuberculosis-risk-in-rheumatoid-arthritis-patients-with-quantiferon-conversion-during-biologic-therapy
#10
Der-Yuan Chen, Ju-Pi Li, Yi-Ming Chen, Tsai-Ling Liao, Hsin-Hua Chen, Chia-Wei Hsieh, Yea-Wen Yeh, Joung-Liang Lan
QuantiFERON-TB-Gold (QFT-G) conversion is frequently observed in rheumatoid arthritis (RA) patients receiving biologic therapy. However, there have not been any known biomarkers available for detecting tuberculosis (TB) in QFT-G converters. We aimed to evaluate clinical utility of cytokines/chemokines for detecting TB in patients with QFT-G conversion. Among a total of 227 RA patients who underwent QFT-G assay, 187 QFT-G-negative patients received biologic therapy without isoniazid prophylaxis. QFT-G assay was repeated at week 52 of biologic therapy or at the time of TB diagnosis...
2016: PloS One
https://www.readbyqxmd.com/read/27852671/highly-multiplexed-proteomic-analysis-of-quantiferon-supernatants-to-identify-biomarkers-of-latent-tuberculosis-infection
#11
Mary Ann De Groote, Michael Higgins, Thomas Hraha, Kirsten Wall, Michael L Wilson, David G Sterling, Nebojsa Janjic, Randall Reves, Urs A Ochsner, Robert Belknap
The tests for diagnosing latent tuberculosis infection (LTBI) are limited by poor predictive value for identifying people at highest risk for progression to active TB, and have varying sensitivity and specificity in different populations. The identification of a more robust signature for LTBI is important for TB prevention and elimination. A pilot study was conducted with samples from immigrants to the U.S. that were screened for LTBI by the three commercially approved tests: Tuberculin Skin Test (TST), QuantiFERON-TB Gold In-Tube (QFT-GIT), and T-SPOT...
November 16, 2016: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27836953/correlates-of-tuberculosis-risk-predictive-biomarkers-for-progression-to-active-tuberculosis
#12
REVIEW
Elisa Petruccioli, Thomas J Scriba, Linda Petrone, Mark Hatherill, Daniela M Cirillo, Simone A Joosten, Tom H Ottenhoff, Claudia M Denkinger, Delia Goletti
New approaches to control the spread of tuberculosis (TB) are needed, including tools to predict development of active TB from latent TB infection (LTBI). Recent studies have described potential correlates of risk, in order to inform the development of prognostic tests for TB disease progression. These efforts have included unbiased approaches employing "omics" technologies, as well as more directed, hypothesis-driven approaches assessing a small set or even individual selected markers as candidate correlates of TB risk...
December 2016: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/27836792/high-throughput-and-computational-approaches-for-diagnostic-and-prognostic-host-tuberculosis-biomarkers
#13
REVIEW
January Weiner, Stefan H E Kaufmann
High throughput techniques strive to guide new biomarkers helpful for tuberculosis (TB) diagnosis, treatment and prevention, but their analysis and interpretation pose considerable challenges. In this review, we report on recent developments in high throughput detection of host biomarkers in TB.
November 8, 2016: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/27831916/retrospective-evaluation-of-the-clinical-utility-of-serological-biomarkers-in-chinese-patients-with-inflammatory-bowel-disease-2-year-clinical-experience
#14
Shulan Zhang, Jing Luo, Ji Li, Ziyan Wu, Chaojun Hu, Ping Li, Chuiwen Deng, Fengchun Zhang, Jiaming Qian, Yongzhe Li
BACKGROUND: Antibodies to saccharomyces cerevisiae (ASCA), antibodies to perinuclear anti-neutrophil cytoplasmic (pANCA), pancreatic autoantibodies (PAB) and antibodies against intestinal goblet cells (GAB) are important in diagnosing Crohn's disease (CD) and ulcerative colitis (UC). However, little is known about their diagnostic value in real clinical practice in China. This retrospective study aimed to present our 2-year clinical experience with those biomarkers in diagnosis of CD and UC...
November 10, 2016: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/27826286/transcriptomic-biomarkers-for-tuberculosis-evaluation-of-dock9-epha4-and-npc2-mrna-expression-in-peripheral-blood
#15
Leonardo S de Araujo, Lea A I Vaas, Marcelo Ribeiro-Alves, Robert Geffers, Fernanda C Q Mello, Alexandre S de Almeida, Adriana da S R Moreira, Afrânio L Kritski, José R Lapa E Silva, Milton O Moraes, Frank Pessler, Maria H F Saad
Lately, much effort has been made to find mRNA biomarkers for tuberculosis (TB) disease/infection with microarray-based approaches. In a pilot investigation, through RNA sequencing technology, we observed a prominent modulation of DOCK9, EPHA4, and NPC2 mRNA abundance in the blood of TB patients. To corroborate these findings, independent validations were performed in cohorts from different areas. Gene expression levels in blood were evaluated by quantitative real-time PCR (Brazil, n = 129) or reanalysis of public microarray data (UK: n = 96; South Africa: n = 51; Germany: n = 26; and UK/France: n = 63)...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27823567/development-of-a-high-fundamental-frequency-hff-piezoelectric-immunosensor-for-early-and-sensitive-detection-of-tuberculosis
#16
Angel Montoya, Carmen March, Yeison J Montagut, María J Moreno, Juan J Manclús, Antonio Arnau, Yolanda Jiménez, Marisol Jaramillo, Paula A Marín, Róbinson A Torres
Tuberculosis, one of the oldest diseases affecting human beings, is still considered as a world public health problem by the World Health Organization. Therefore, there is a need for new and more powerful analytical methods for early illness diagnosis. With this idea in mind, the development of a High Fundamental Frequency (HFF) piezoelectric immunosensor for the sensitive detection of tuberculosis was undertaken. A 38 kDa protein secreted by Mycobacterium tuberculosis was first selected as the target biomarker...
November 4, 2016: Current Topics in Medicinal Chemistry
https://www.readbyqxmd.com/read/27819295/il-21-signaling-is-essential-for-optimal-host-resistance-against-mycobacterium-tuberculosis-infection
#17
Matthew G Booty, Palmira Barreira-Silva, Stephen M Carpenter, Cláudio Nunes-Alves, Miye K Jacques, Britni L Stowell, Pushpa Jayaraman, Gillian Beamer, Samuel M Behar
IL-21 is produced predominantly by activated CD4(+) T cells and has pleiotropic effects on immunity via the IL-21 receptor (IL-21R), a member of the common gamma chain (γc) cytokine receptor family. We show that IL-21 signaling plays a crucial role in T cell responses during Mycobacterium tuberculosis infection by augmenting CD8(+) T cell priming, promoting T cell accumulation in the lungs, and enhancing T cell cytokine production. In the absence of IL-21 signaling, more CD4(+) and CD8(+) T cells in chronically infected mice express the T cell inhibitory molecules PD-1 and TIM-3...
November 7, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27797276/bacterial-pili-with-emphasis-on-mycobacterium-tuberculosis-curli-pili-potential-biomarkers-for-point-of-care-tests-and-therapeutics
#18
Natasha Naidoo, Manormoney Pillay
CONTEXT: Novel biomarkers are essential for developing rapid diagnostics and therapeutic interventions Objective: This review aimed to highlight biomarker characterisation and assessment of unique bacterial pili. METHODS: A PubMed search for bacterial pili, diagnostics, vaccine and therapeutics was performed, with emphasis on the well characterised pili. RESULTS: In total, 46 papers were identified and reviewed. CONCLUSION: Extensive analyses of pili enabled by advanced nanotechnology and whole genome sequencing provide evidence that they are strong biomarker candidates...
December 1, 2016: Biomarkers: Biochemical Indicators of Exposure, Response, and Susceptibility to Chemicals
https://www.readbyqxmd.com/read/27796930/the-assessment-of-host-and-bacterial-proteins-in-sputum-from-active-pulmonary-tuberculosis
#19
Hsin-Chih Lai, Yu-Tze Horng, Pen-Fang Yeh, Jann-Yuan Wang, Chin-Chung Shu, Chia-Chen Lu, Jang-Jih Lu, Jen-Jyh Lee, Po-Chi Soo
Pulmonary tuberculosis (TB) is caused by Mycobacterium tuberculosis. The protein composition of sputum may reflect the immune status of the lung. This study aimed to evaluate the protein profiles in spontaneous sputum samples from patients with active pulmonary TB. Sputum samples were collected from patients with pulmonary TB and healthy controls. Western blotting was used to analyze the amount of interleukin 10 (IL-10), interferon-gamma (IFN-γ), IL-25, IL-17, perforin-1, urease, albumin, transferrin, lactoferrin, adenosine deaminase (also known as adenosine aminohydrolase, or ADA), ADA-2, granzyme B, granulysin, and caspase-1 in sputum...
November 2016: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/27795917/hmgb1-level-in-cerebrospinal-fluid-as-a-complimentary-biomarker-for-the-diagnosis-of-tuberculous-meningitis
#20
Yan Chen, Jun Zhang, Xiaofei Wang, Yu Wu, Li Zhu, Longkun Lu, Qian Shen, Yanghua Qin
PURPOSE: High mobility group box-1 (HMGB1) is a proinflammatory, DAMP protein that participates in many pathological conditions. In this study, we evaluated the usability of CSF HMGB1 as a biomarker for the diagnosis of tuberculous meningitis (TBM). METHODS: A total of 59 TBM patients and 169 control patients were included in our study. CSF samples were obtained and analyzed for HMGB1 using a commercial ELISA kit. RESULTS: The mean CSF HMGB1 was 19...
2016: SpringerPlus
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