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Pulmonary infection and polymorphism

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https://www.readbyqxmd.com/read/29924447/evaluation-of-tlr2-tlr4-and-tollip-polymorphisms-for-their-role-in-tuberculosis-susceptibility
#1
Shouquan Wu, Weiwei Huang, Dan Wang, Yu Wang, Minggui Wang, Miaomiao Zhang, Jian-Qing He
Previous studies indicated that single-nucleotide polymorphisms (SNPs) of genes coding for toll-like receptors (TLRs) and toll-interacting protein (TOLLIP) may be involved in the pathogenesis of pulmonary tuberculosis (PTB). This study was designed to investigate potential associations between the polymorphisms in TLR2, TLR4, and TOLLIP and susceptibility to latent tuberculosis infection (LTBI) or subsequent PTB in a Chinese Han population. A total of 209 PTB and 201 LTBI patients and 204 healthy control subjects (HCS) were enrolled in our study...
June 2018: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
https://www.readbyqxmd.com/read/29912964/rd5-mediated-lack-of-pe_pgrs-and-ppe-mptr-export-in-bcg-vaccine-strains-results-in-strong-reduction-of-antigenic-repertoire-but-little-impact-on-protection
#2
Louis S Ates, Fadel Sayes, Wafa Frigui, Roy Ummels, Merel P M Damen, Daria Bottai, Marcel A Behr, Jeroen W J van Heijst, Wilbert Bitter, Laleh Majlessi, Roland Brosch
Tuberculosis is the deadliest infectious disease worldwide. Although the BCG vaccine is widely used, it does not efficiently protect against pulmonary tuberculosis and an improved tuberculosis vaccine is therefore urgently needed. Mycobacterium tuberculosis uses different ESX/Type VII secretion (T7S) systems to transport proteins important for virulence and host immune responses. We recently reported that secretion of T7S substrates belonging to the mycobacteria-specific Pro-Glu (PE) and Pro-Pro-Glu (PPE) proteins of the PGRS (polymorphic GC-rich sequences) and MPTR (major polymorphic tandem repeat) subfamilies required both a functional ESX-5 system and a functional PPE38/71 protein for secretion...
June 18, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29888256/genetic-polymorphisms-of-il1b-il6-and-tnf%C3%AE-in-a-chinese-han-population-with-pulmonary-tuberculosis
#3
Shouquan Wu, Yu Wang, Miaomiao Zhang, Saurav S Shrestha, Minggui Wang, Jian-Qing He
Background: The factors that predispose to pulmonary tuberculosis (PTB) are not fully understood. Previous studies have shown that cytokine gene polymorphisms were associated with PTB. Objectives: In this study, we have investigated the relationship between ILB , IL6, and TNFα polymorphisms and a predisposition to Mycobacterium tuberculosis (MTB) infection and PTB. Methods: A total of 209 cases of PTB, 201 subjects with latent TB infection (LTBI), and 204 healthy controls (HCS) were included in this study...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29867955/phosphatidyl-inositol-3-kinase-gamma-balances-antiviral-and-inflammatory-responses-during-influenza-a-h1n1-infection-from-murine-model-to-genetic-association-in-patients
#4
Cristiana C Garcia, Luciana P Tavares, Ana Carolina F Dias, Fernanda Kehdy, Lucia Elena Alvarado-Arnez, Celso M Queiroz-Junior, Izabela Galvão, Braulio H Lima, Aline R Matos, Ana Paula F Gonçalves, Frederico M Soriani, Milton O Moraes, João T Marques, Marilda M Siqueira, Alexandre M V Machado, Lirlândia P Sousa, Remo C Russo, Mauro M Teixeira
Influenza A virus (IAV) infection causes severe pulmonary disease characterized by intense leukocyte infiltration. Phosphoinositide-3 kinases (PI3Ks) are central signaling enzymes, involved in cell growth, survival, and migration. Class IB PI3K or phosphatidyl inositol 3 kinase-gamma (PI3Kγ), mainly expressed by leukocytes, is involved in cell migration during inflammation. Here, we investigated the contribution of PI3Kγ for the inflammatory and antiviral responses to IAV. PI3Kγ knockout (KO) mice were highly susceptible to lethality following infection with influenza A/WSN/33 H1N1...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29787713/interferon-gamma-release-assay-performance-in-northeastern-brazil-influence-of-the-ifng-874-a-t-polymorphism
#5
Valdirene Leão Carneiro, Maria Teresita Bendicho, Rosalina Guedes Santos, Marilda Casela, Eduardo M Netto, Scarlet Torres Moraes Mota, Iza Cristina Araújo Pina, Roberto Meyer Nascimento, Songeli Menezes Freire, Theolis Barbosa
INTRODUCTION: Latent tuberculosis infection diagnosis based on the release of interferon-gamma in cultures of peripheral blood cells stimulated with Mycobacterium tuberculosis antigens has replaced the tuberculin skin test in many countries with low tuberculosis prevalence. The IFN-γ production can be influenced by genetic polymorphisms, of which the IFNG+874 (rs62559044) locus is the most studied. We investigated the possible influence of the IFNG+874 A/T polymorphism on interferon-gamma test performance...
May 19, 2018: Brazilian Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29712660/novel-mutations-associated-with-clofazimine-resistance-in-mycobacterium-abscessus
#6
Yuanyuan Chen, Jiazhen Chen, Shuo Zhang, Wanliang Shi, Wenhong Zhang, Min Zhu, Ying Zhang
Mycobacterium abscessus ( Mab ) is a major non-tuberculous mycobacterial (NTM) pathogen responsible for about 80% of all pulmonary infections caused by rapidly growing mycobacteria. Clofazimine is an effective drug active against Mab , but the mechanism of resistance to clofazimine in Mab is unknown. To investigate the molecular basis of clofazimine resistance in Mab. We isolated 29 Mab mutants resistant to clofazimine, and subjected them to whole genome sequencing to identify possible mutations associated with clofazimine resistance...
April 30, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29694446/clinical-biochemical-and-genetic-risk-factors-for-30-day-and-5-year-mortality-in-518-adult-patients-subjected-to-cardiopulmonary-bypass-during-cardiac-surgery-the-inflacor-study
#7
Maciej Michał Kowalik, Romuald Lango, Piotr Siondalski, Magdalena Chmara, Maciej Brzeziński, Krzysztof Lewandowski, Dariusz Jagielak, Andrzej Klapkowski, Jan Rogowski
There is increasing evidence that genetic variability influences patients' early morbidity after cardiac surgery performed using cardiopulmonary bypass (CPB). The use of mortality as an outcome measure in cardiac surgical genetic association studies is rare. We publish the 30-day and 5-year survival analyses with focus on pre-, intra-, postoperative variables, biochemical parameters, and genetic variants in the INFLACOR (INFLAmmation in Cardiac OpeRations) cohort. In a prospectively recruited cohort of 518 adult Polish Caucasians, who underwent cardiac surgery in which CPB was used, the clinical data, biochemical parameters, IL-6, soluble ICAM-1, TNFα, soluble E-selectin, and 10 single nucleotide polymorphisms were evaluated for their association with 30-day and 5-year mortality...
2018: Acta Biochimica Polonica
https://www.readbyqxmd.com/read/29675696/association-of-toll-like-receptor-2-and-9-gene-variants-with-pulmonary-tuberculosis-exploration-in-a-northern-indian-population
#8
Mayank Mittal, Sanjay Kumar Biswas, Vandana Singh, Nidhi Arela, Vishwa Mohan Katoch, Ram Das, Virendra Singh Yadav, Bharat Bajaj, Keshar Kunja Mohanty
Tuberculosis (TB) is a disease of global importance. There is an increasing recognition of the role of Toll like receptors, important pattern recognition receptors of host immune system, in determining the susceptibility or resistance to TB in various populations. In an attempt to examine the importance of Toll like receptors in immune response to Mycobacterium tuberculosis infection, we explored two variants each of TLR2 and TLR9 in a population residing in Uttar Pradesh, India. Genotyping was performed to detect -196 to -174 del polymorphism and G2258A SNP (Arg753Gln, rs5743708) in TLR2 gene and -T1237C (rs5743836) and G2848A (rs352140) SNP in TLR9 gene in patients with pulmonary TB and healthy controls...
April 19, 2018: Molecular Biology Reports
https://www.readbyqxmd.com/read/29664036/genotype-phenotype-relationship-of-ccl5-in-pulmonary-tuberculosis-infection-in-sahariya-tribe-a-pilot-study
#9
Gunja Mishra, Satish S Poojary, Sanjay Jain, Pramod Kumar Tiwari
Background & objectives: Sahariya, a primitive tribe of Central India, has shown significantly increased incidence of pulmonary tuberculosis (PTB). Our previous study on Sahariya showed a significant association of -403G>A single nucleotide polymorphism (SNP) of CCL5 with susceptibility to PTB. Hence, this study was aimed to analyze a genotype-phenotype relationship of this disease-associated SNP to develop a potential diagnostic marker for TB in this tribe. Methods: The present study was carried out on 70 plasma samples from Sahariya tribe, wherein the plasma CCL5 level was determined using a commercially available ELISA kit...
December 2017: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/29593721/vitamin-d-in-human-immunodeficiency-virus-infection-influence-on-immunity-and-disease
#10
REVIEW
María Ángeles Jiménez-Sousa, Isidoro Martínez, Luz María Medrano, Amanda Fernández-Rodríguez, Salvador Resino
People living with human immunodeficiency virus (HIV) infection typically have hypovitaminosis D, which is linked to a large number of pathologies, including immune disorders and infectious diseases. Vitamin D (VitD) is a key regulator of host defense against infections by activating genes and pathways that enhance innate and adaptive immunity. VitD mediates its biological effects by binding to the Vitamin D receptor (VDR), and activating and regulating multiple cellular pathways. Single nucleotide polymorphisms in genes from those pathways have been associated with protection from HIV-1 infection...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29516882/influence-of-interferon-gamma-receptor-1-gene-polymorphisms-on-the-susceptibility-to-pulmonary-tuberculosis-among-sudanese-population
#11
Afra Hasabelrsoul Ali, Alfadhil Alobeid Omer, Nageeb Suleiman Saeed, Elhag E Mansour, Mogahid Mohammed Elhassan
Background: A variety of genetic mutations are thought to be responsible for acquisition of different infections such as tuberculosis (TB). An obvious example for these variations is the link between pulmonary TB and polymorphisms within interferon-gamma receptor 1 (IFN-γ R1) gene. This project is designed to identify the role of IFN-γR1 gene polymorphism in the development of pulmonary TB among Sudanese patients attending several hospitals in Khartoum State. Methods: One hundred (n = 100) patients with active TB and fifty (n = 50) matched healthy controls were investigated for the association of two genetic polymorphisms within IFN-γR1 gene and their risk of developing pulmonary tuberculosis...
January 2018: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/29515573/ampliseq-screening-of-genes-encoding-the-c-type-lectin-receptors-and-their-signaling-components-reveals-a-common-variant-in-masp1-associated-with-pulmonary-tuberculosis-in-an-indian-population
#12
Tilman E Klassert, Surabhi Goyal, Magdalena Stock, Dominik Driesch, Abid Hussain, Luis Carlos Berrocal-Almanza, Rajashekar Myakala, Gaddam Sumanlatha, Vijayalakshmi Valluri, Niyaz Ahmed, Ralf R Schumann, Carlos Flores, Hortense Slevogt
Tuberculosis (TB) is a multifactorial disease governed by bacterial, host and environmental factors. On the host side, growing evidence shows the crucial role that genetic variants play in the susceptibility to Mycobacterium tuberculosis (Mtb) infection. Such polymorphisms have been described in genes encoding for different cytokines and pattern recognition receptors (PRR), including numerous Toll-like receptors (TLRs). In recent years, several members of the C-type lectin receptors (CTLRs) have been identified as key PRRs in TB pathogenesis...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29468971/il-10-promoter-592-polymorphism-may-influence-susceptibility-to-hiv-infection-in-south-indian-population
#13
Murugesan Harishankar, Harini Ravikrishnan, Akshaya Ravishankar, Luke Elizabeth Hanna, Soumya Swaminathan, Paramasivam Selvaraj, Ramalingam Bethunaickan
BACKGROUND: Genetic factors play an important role in the development of disease susceptibility or protection. Cytokine gene polymorphisms are reported to be associated with altered levels of cytokine production that can impact disease progression in HIV and TB. OBJECTIVE: In this study, we studied IL-10 -592(C/A) and TGF-β -509 (C/T) promoter polymorphisms to understand their role in susceptibility or resistance to HIV and TB in a South Indian population. METHOD: Genomic DNA was isolated from healthy controls, pulmonary tuberculosis patients (n=122) and HIV positive individuals (n=100) and used for genotyping by polymerase chain reaction followed by restriction fragment length polymorphism (PCR-RFLP) method...
2018: Current HIV Research
https://www.readbyqxmd.com/read/29402222/large-scale-genomic-analysis-shows-association-between-homoplastic-genetic-variation-in-mycobacterium-tuberculosis-genes-and-meningeal-or-pulmonary-tuberculosis
#14
Carolien Ruesen, Lidya Chaidir, Arjan van Laarhoven, Sofiati Dian, Ahmad Rizal Ganiem, Hanna Nebenzahl-Guimaraes, Martijn A Huynen, Bachti Alisjahbana, Bas E Dutilh, Reinout van Crevel
BACKGROUND: Meningitis is the most severe manifestation of tuberculosis. It is largely unknown why some people develop pulmonary TB (PTB) and others TB meningitis (TBM); we examined if the genetic background of infecting M. tuberculosis strains may be relevant. METHODS: We whole-genome sequenced M. tuberculosis strains isolated from 322 HIV-negative tuberculosis patients from Indonesia and compared isolates from patients with TBM (n = 106) and PTB (n = 216)...
February 5, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29353387/inter-individual-variation-in-health-and-disease-associated-with-pulmonary-infectious-agents
#15
Kirsten C Verhein, Heather L Vellers, Steven R Kleeberger
Respiratory infectious diseases resulting from bacterial or viral pathogens such as Mycobacterium tuberculosis, Streptococcus pneumoniae, respiratory syncytial virus (RSV), or influenza, are major global public health concerns. Lower respiratory tract infections are leading causes of morbidity and mortality, only behind ischemic heart disease and stroke (GBD 2015 LRI Collaborators in Lancet Infect Dis 17(11):1133-1161, 2017). Developing countries are particularly impacted by these diseases. However, while many are infected with viruses such as RSV (> 90% of all individuals are infected by age 2), only sub-populations develop severe disease...
February 2018: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/29228063/what-matters-in-chronic-burkholderia-cenocepacia-infection-in-cystic-fibrosis-insights-from-comparative-genomics
#16
Jaroslav Nunvar, Vaclav Capek, Karel Fiser, Libor Fila, Pavel Drevinek
Burkholderia cenocepacia causes severe pulmonary infections in cystic fibrosis (CF) patients. Since the bacterium is virtually untreatable by antibiotics, chronic infections persist for years and might develop into fatal septic pneumonia (cepacia syndrome, CS). To devise new strategies to combat chronic B. cenocepacia infections, it is essential to obtain comprehensive knowledge about their pathogenesis. We conducted a comparative genomic analysis of 32 Czech isolates of epidemic clone B. cenocepacia ST32 isolated from various stages of chronic infection in 8 CF patients...
December 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/29165618/human-specific-mutations-and-positively-selected-sites-in-marco-confer-functional-changes
#17
Kyle E Novakowski, Nicholas V L Yap, Charles Yin, Kaori Sakamoto, Bryan Heit, G Brian Golding, Dawn M E Bowdish
Macrophage Receptor with COllagenous structure (MARCO) is a class A scavenger receptor that binds, phagocytoses, and modifies inflammatory responses to bacterial pathogens. Multiple candidate gene approach studies have shown that polymorphisms in MARCO are associated with susceptibility or resistance to Mycobacterium tuberculosis infection, but how these variants alter function is not known. To complement candidate gene approach studies, we previously used phylogenetic analyses to identify a residue, glutamine 452 (Q452), within the ligand-binding Scavenger Receptor Cysteine Rich domain as undergoing positive selection in humans...
February 1, 2018: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/29103412/effects-of-herbal-extracts-and-compounds-and-pharmacological-agents-on-pulmonary-fibrosis-in-animal-models-a-review
#18
REVIEW
Hoda Mojiri-Forushani, Ali Asghar Hemmati, Mohammad Amin Dehghani, Ali Reza Malayeri, Hossein Hassan Pour
Pulmonary fibrosis, a chronic inflammatory disease that occurs mainly in older adults, is a serious health threat with few effective treatment options. The etiological aspects of pulmonary fibrosis remain unknown, though some factors such as cigarette smoking, viral infections, surfactant protein polymorphisms, and chronic or high doses use of certain drugs are considered to be risk factors for the progression of pulmonary fibrosis. No standard treatments have been introduced in clinic yet. Although glucocorticoids and antioxidant drugs have been administered, the severe and broad-spectrum adverse effects of glucocorticoids limit their use...
November 2017: Journal of Integrative Medicine
https://www.readbyqxmd.com/read/29020397/pentraxin-3-gene-polymorphisms-and-pulmonary-aspergillosis-in-chronic-obstructive-pulmonary-disease-patients
#19
Qian He, Hongxing Li, Yuwen Rui, Lulu Liu, Binchan He, Yi Shi, Xin Su
Background: Pentraxin 3 (PTX3) plays an important role in resistance to Aspergillus infections. Previous studies have suggested that PTX3 polymorphisms influence the risk of invasive aspergillosis among transplantation recipients. This study investigated the association between PTX3 gene polymorphisms and pulmonary aspergillosis in a chronic obstructive pulmonary disease (COPD) population. Methods: We included 173 consecutive inpatients with COPD. Thirty-six case patients were finally diagnosed with pulmonary aspergillosis...
January 6, 2018: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28902922/molecular-clustering-of-patients-with-diabetes-and-pulmonary-tuberculosis-a-systematic-review-and-meta-analysis
#20
REVIEW
Francles Blanco-Guillot, Guadalupe Delgado-Sánchez, Norma Mongua-Rodríguez, Pablo Cruz-Hervert, Leticia Ferreyra-Reyes, Elizabeth Ferreira-Guerrero, Mercedes Yanes-Lane, Rogelio Montero-Campos, Miriam Bobadilla-Del-Valle, Pedro Torres-González, Alfredo Ponce-de-León, José Sifuentes-Osornio, Lourdes Garcia-Garcia
INTRODUCTION: Many studies have explored the relationship between diabetes mellitus (DM) and tuberculosis (TB) demonstrating increased risk of TB among patients with DM and poor prognosis of patients suffering from the association of DM/TB. Owing to a paucity of studies addressing this question, it remains unclear whether patients with DM and TB are more likely than TB patients without DM to be grouped into molecular clusters defined according to the genotype of the infecting Mycobacterium tuberculosis bacillus...
2017: PloS One
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