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TB cytokine

Himanshu Pandey, Sarita Tripathi, Kanchan Srivastava, Dinesh K Tripathi, Mrigank Srivastava, Surya Kant, Kishore K Srivastava, Ashish Arora
BACKGROUND: We have characterized two immunogenic proteins, Rv1197 and Rv1198, of the Esx-5 system of the ESAT-6 family of Mycobacterium tuberculosis H37Rv. METHODS: The complex formation between Rv1197 and Rv1198 was characterized by biophysical techniques. The reactivity of serum from TB patients towards these proteins was characterized by ELISA. Lymphocyte proliferation and cytokine induction were followed in restimulated splenocytes from immunized mice by using MTT assay and CBA flowcytometry, respectively...
October 14, 2016: Biochimica et Biophysica Acta
Fatemeh Heidarnezhad, Amir Asnaashari, Seyed Abdolrahim Rezaee, Roghayeh Ghezelsofla, Kiarash Ghazvini, Narges Valizadeh, Reza Basiri, Aghigh Ziaeemehr, Somayeh Sobhani, Houshang Rafatpanah
OBJECTIVES: Tuberculosis is one of the most important infectious diseases with high mortality rates worldwide, especially in developing countries. Interleukin17 (IL-17) is an important acquired immunity cytokine, which is mainly produced by CD4(+)TH17 cells. It can recruit neutrophils and macrophages to the infected site in the lungs. IL-23 is one of the most important inducers of IL-17. In the present study, the expressions of IL-23 and IL-17 were examined in the pathogenesis of tuberculosis...
August 2016: Iranian Journal of Basic Medical Sciences
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
Nathella Pavan Kumar, Kadar Moideen, Shanmugam Sivakumar, Pradeep A Menon, Vijay Viswanathan, Hardy Kornfeld, Subash Babu
BACKGROUND: Tuberculosis-diabetes co-morbidity (TB-DM) is characterized by increased inflammation with elevated circulating levels of inflammatory cytokines and other factors. Circulating angiogenic factors are intricately involved in the angiogenesis-inflammation nexus. METHODS: To study the association of angiogenic factors with TB-DM, we examined the systemic levels of VEGF-A, VEGF-C, VEGF-D, VEGF-R1, VEGF-R2, VEGF-R3 in individuals with either TB-DM (n = 44) or TB alone (n = 44)...
October 4, 2016: Journal of Infection
Martin Tobias Speth, Urska Repnik, Gareth Griffiths
Tuberculosis (TB) is a major disease burden globally causing more than 1.5 million deaths per year. The attenuated live vaccine strain Bacille Calmette-Guérin (BCG), although providing protection against childhood TB, is largely ineffective against adult pulmonary TB. A major aim therefore is to increase the potency of the BCG vaccine to generate stronger and more sustained immunity against TB. Here, we investigated the use of layer-by-layer (LbL) nanocoating of the surface of live BCG with several layers of polyinosinic-polycytidylic acid (poly(I:C)), a strong inducer of cell-mediated immunity, and the biodegradable polysaccharide chitosan to enhance BCG immunogenicity...
September 30, 2016: Biomaterials
J Shi, B H Sun, L R Zhou, X S Wang
Mycobacterium tuberculosis (Mtb) is known to be responsible for tuberculosis (TB), but the pathogenesis of this disease and the host defense mechanisms involved are, for the most part, poorly understood. In this study, we divided 30 male C57BL/6 mice into control and infection groups, and following injection with physiological saline or Mtb, respectively, euthanized five mice from each group on days 1, 3, and 7. TNF-α and IL-10 levels were measured by enzyme-linked immunosorbent assay and flow cytometry, with the latter also being performed to assess apoptosis rates...
September 23, 2016: Genetics and Molecular Research: GMR
Natasha Dubois Cauwelaert, Susan L Baldwin, Mark T Orr, Anthony L Desbien, Emily Gage, Kimberly A Hofmeyer, Rhea N Coler
The contribution of B cells to immunity against many infectious diseases is unquestionably important and well characterized. Here, we sought to determine the role of B cells in the induction of T helper 1 (TH 1) CD4(+) T cells upon vaccination with a tuberculosis (TB) antigen combined with a TLR4 agonist. We used B-cell deficient mice (μMT(-/-) ), tetramer-positive CD4(+) T cells, markers of memory 'precursor' effector cells (MPECs), and T-cell adoptive transfers and demonstrated that the early antigen-specific cytokine-producing TH 1 responses are unaffected in the absence of B cells, however MPEC induction is strongly impaired resulting in a deficiency of the memory TH 1 response in μMT(-/-) mice...
October 4, 2016: European Journal of Immunology
Jun-Ai Zhang, Gan-Bin Liu, Bi-Ying Zheng, Yuan-Bin Lu, Yu-Chi Gao, Xiao-Zhen Cai, You-Chao Dai, Shi-Yan Yu, Yan Jia, Chen Chen, Ze-Gang Zhuang, Xin Wang, Wan-Dang Wang, Xiao-Xia Fu, Lai-Long Yi, Ling Shen, Zheng W Chen, Jun-Fa Xu
Roles of human IL-37 in infections remain poorly characterized. Although plasma IL-37 is elevated in patients with tuberculosis (TB), IL-37 source and immune correlate in TB have not been investigated. It is also unknown whether and how TB can influence the ability of immune cells to mount innate responses of IL-37 and pre-inflammatory cytokines. Here, we demonstrated that IL-37b-producing monocytes coincided with a source of elevated plasma IL-37b in TB patients. While IL-37b production in TB was associated with prolonged/complicated TB, TB burdens and inflammatory reactions, it negatively correlated with immune responses of pro-inflammatory cytokines IL-1β, IL-6 and TNF-α or IL-10...
September 27, 2016: Molecular Immunology
Esin Aktas Cetin, Leyla Pur Ozyigit, Yusuf Metin Gelmez, Erkan Cakir, Ahmet Hakan Gedik, Gunnur Deniz
OBJECTIVES: Childhood tuberculosis (TB) comprises an important part of the world's TB burden. Monocytes set up the early phase of infection because of innate immune responses. Understanding the changes in monocyte subsets during multisystem infectious diseases may be important for the development of novel diagnostic and therapeutic strategies. The aim of this study was to evaluate the monocyte phenotype together with the cytokine secretion profiles of children with pulmonary tuberculosis...
September 29, 2016: Pediatric Pulmonology
Ida Wergeland, Jörg Assmus, Anne Ma Dyrhol-Riise
BACKGROUND: Interferon gamma release assays (IGRAs) do not discriminate between active tuberculosis (TB) and latent TB infection (LTBI), which limit their use in TB endemic areas. Subjects with QuantiFERON-TB (QFT) results around the diagnostic cut-off more likely show inconsistent results on serial testing which makes the interpretation of the assay difficult. We have studied potential biomarkers in patients with various stages of TB infection and with borderline QFT tests compared to those with higher values...
2016: PloS One
Ioana Streata, January Weiner, Marco Iannaconne, Gayle McEwen, Marius Sorin Ciontea, Marian Olaru, Rosanna Capparelli, Mihai Ioana, Stefan H E Kaufmann, Anca Dorhoi
Genetic variants in the CARD9 gene predispose to inflammatory disorders and chronic infectious diseases. Tuberculosis (TB), a chronic infectious disease affecting the lung, is lethal in Card9-deficient mice. We hypothesized that polymorphisms in the CARD9 gene influence TB progression and disease-associated lung damage in humans. We tested genotype distributions of the CARD9 polymorphisms rs4077515, rs10781499 and rs10870077 in TB patients and healthy subjects in a Caucasian cohort. SNPs were in linkage disequilibrium and none of the haplotypes was significantly enriched in the TB group...
2016: PloS One
Ilana C van Rensburg, Chandre Wagman, Kim Stanley, Caroline Beltran, Katharina Ronacher, Gerhard Walzl, Andre G Loxton
Activated B-cells increase T-cell behaviour during autoimmune disease and other infections by means of cytokine production and antigen-presentation. Functional studies in experimental autoimmune encephalomyelitis (EAE) indicate that B-cell deficiencies, and a lack of IL10 and IL35 leads to a poor prognosis. We hypothesised that B-cells play a role during tuberculosis. We evaluated B-cell mRNA expression using real-time PCR from healthy community controls, individuals with other lung diseases and newly diagnosed untreated pulmonary TB patients at three different time points (diagnosis, month 2 and 6 of treatment)...
September 22, 2016: Oncotarget
Lisete Ribeiro Teixeira, Murilo B Dias, Roberta K B Sales, Leila Antonangelo, Vanessa A Alvarenga, Juliana Puka, Evaldo Marchi, Milena Marques Pagliarelli Acencio
BACKGROUND: Matrix metalloproteinases (MMPs) are responsible for the breakdown of the extracellular matrix and play an important role in the inflammatory processes of pleural exudates. The imbalance between MMPs and their inhibitors (TIMPs) is present in various pathological processes. OBJECTIVE: To evaluate the profile of MMPs and TIMPs in pleural effusions of different etiologies correlated with inflammatory markers. METHODS: The patients with pleural effusion due to tuberculosis (TB), cancer (CA) or transudate were prospectively evaluated...
September 27, 2016: Lung
Amar Singh, Anant Mohan, Aprajit B Dey, Dipendra K Mitra
BACKGROUND: Optimal T cell activation is vital for the successful resolution of microbial infections. Programmed death-1 (PD-1) is key immune checkpoint receptor expressed by activated T cells. Aberrant/excessive inhibition mediated by PD-1 may impair host immunity to M. tuberculosis infection, leading to disseminated disease like miliary tuberculosis (MTB). PD-1 mediated inhibition of T cells in pulmonary tuberculosis and TB pleurisy is reported. However, their role in MTB, particularly at the pathologic sites remains to be addressed...
September 26, 2016: Clinical and Experimental Immunology
Christina Hafner, Jing Wu, Akos Tiboldi, Moritz Hess, Goran Mitulovic, Christoph Kaun, Konstantin Alexander Krychtiuk, Johann Wojta, Roman Ullrich, Eva Verena Tretter, Klaus Markstaller, Klaus Ulrich Klein
Supplemental oxygen (O2) is used as adjunct therapy in anesthesia, emergency and intensive care medicine. We hypothesized that excessive O2 levels (hyperoxia) can directly injure human adult cardiac myocytes (HACMs). HACMs obtained from the explanted hearts of transplantation patients were exposed to constant hyperoxia (95% O2), intermittent hyperoxia (alternating 10 min exposures to 5% and 95% O2), constant normoxia (21% O2), or constant mild hypoxia (5% O2) using a bioreactor. Changes in cell morphology, viability as assessed by lactate dehydrogenase (LDH) release and trypan blue (TB) staining, and secretion of vascular endothelial growth factor (VEGF), macrophage migration inhibitory factor (MIF), and various pro-inflammatory cytokines (interleukin, IL; chemokine C-X-C motif ligand, CXC; granulocyte-colony stimulating factor, G-CSF; intercellular adhesion molecule, ICAM; chemokine C-C motif ligand, CCL) were compared among treatment groups at baseline (0 h) and after 8 h, 24 h, and 72 h of treatment...
September 19, 2016: Shock
Yousef Amini, Bagher Moradi, Mahdi Fasihi-Ramandi
Many materials such as aluminum hydroxide have been tried as adjuvants to compensate low inherent immunogenicity of subunit vaccines. The aim of this study was to evaluate the specific immune response following the administration of aluminum hydroxide nanoparticles with EsxV antigen. The physiochemical properties of the nanoparticle were characterized in vitro. After subcutaneous immunization, cytokine secretion patterns including IFN-gama,IL-4, and TGF-beta levels were measured by indirect enzyme linked immunosorbent assay (ELISA)...
September 20, 2016: Artificial Cells, Nanomedicine, and Biotechnology
Ru Jiang-Ying, Xu Hai-Dong, Shi Dai, Pan Jun-Bo, Pan Xiao-Jin, Wang Yan-Fen
Ulinastatin(UTI), is widely used to clinically treat LPS-related inflammatory disorders recently. <br />Adherent pathogen-associated molecular patterns (PAMPs),of which LPS is the best-studied<br /> and classical endotoxin produced by Gram-titanium particles in cell culture and animal models of implant loosening.This study was designed to explore the inhibitory effect of UTI on osteoclas-togenesis and inflammatory osteolysis in LPS/PMMA-mediated Raw 264.7 cells and murine osteolysis models ,and investigate the potential mechanism...
September 16, 2016: Bioscience Reports
Steven G Smith, Andrea Zelmer, Rose Blitz, Helen A Fletcher, Hazel M Dockrell
BACKGROUND: Vaccination with Bacillus Calmette Guerin (BCG) protects infants against childhood tuberculosis however the immune mechanisms involved are not well understood. Further elucidation of the infant immune response to BCG will aid with the identification of immune correlates of protection against tuberculosis and with the design of new improved vaccines. The purpose of this study was to investigate BCG-induced CD4+ T-cell responses in blood samples from infants for cytokine secretion profiles thought to be important for protection against tuberculosis and compare these to PBMC-mediated in vitro mycobacterial growth inhibition...
October 17, 2016: Vaccine
Mani H Vemula, Raghavender Medisetti, Rakesh Ganji, Kiran Jakkala, Swetha Sankati, Kiranam Chatti, Sharmistha Banerjee
Zinc metalloprotease-1 (Zmp1) from Mycobacterium tuberculosis (M.tb), the tuberculosis (TB) causing bacillus, is a virulence factor involved in inflammasome inactivation and phagosome maturation arrest. We earlier reported that Zmp1 was secreted under granuloma-like stress conditions, induced Th2 cytokine microenvironment and was highly immunogenic in TB patients as evident from high anti-Zmp1 antibody titers in their sera. In this study, we deciphered a new physiological role of Zmp1 in mycobacterial dissemination...
2016: Frontiers in Microbiology
Séverine Carrère-Kremer, Pierre-Alain Rubbo, Amandine Pisoni, Sophie Bendriss, Grégory Marin, Marianne Peries, Karine Bolloré, Dominique Terru, Sylvain Godreuil, Arnaud Bourdin, Philippe Van de Perre, Edouard Tuaillon
Interferon gamma (IFN-γ) release assays (IGRAs) detect Mycobacterium tuberculosis (Mtb) infection regardless of the active (ATB) or latent (LTBI) forms of tuberculosis (TB). In this study, Mtb-specific T cell response against region of deletion 1 (RD1) antigens were explored by a microbead multiplex assay performed in T-SPOT TB assay (T-SPOT) supernatants from 35 patients with ATB and 115 patients with LTBI. T-SPOT is positive when over 7 IFN-γ secreting cells (SC)/250 000 peripheral blood mononuclear cells (PBMC) are enumerated...
2016: PloS One
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