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https://www.readbyqxmd.com/read/29352853/interferon-regulatory-factor-5-is-a-potential-target-of-autoimmune-response-triggered-by-epstein-barr-virus-and-mycobacterium-avium-subsp-paratuberculosis-in-rheumatoid-arthritis-investigating-a-mechanism-of-molecular-mimicry
#1
Marco Bo, Gian Luca Erre, Magdalena Niegowska, Marco Piras, Loredana Taras, Maria Giovanna Longu, Giuseppe Passiu, Leonardo A Sechi
OBJECTIVES: Rheumatoid arthritis (RA) is a chronic disease characterised by a pro-inflammatory cytokines linked erosive joint damage and by humoral and cellular response against a broad range of self-peptides. Molecular mimicry between Epstein-Barr virus (EBV), Mycobacterium avium subsp. paratuberculosis (MAP) and host peptides has long been regarded as an RA pathogenetic mechanism. Using bioinformatic analysis we identified high sequence homology among interferon regulatory factor 5 (IRF5), EBV antigen BOLF1 and MAP antigen MAP_4027...
January 15, 2018: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/29346118/mycobacterium-avium-complex-pulmonary-disease-new-epidemiology-and-management-concepts
#2
Leah Lande, Jason George, Theodore Plush
PURPOSE OF REVIEW: The prevalence of Mycobacterium avium complex (MAC)-related pulmonary disease has been increasing because of environmental factors, changes in organism virulence, and evolving host susceptibility. Treatment is often complicated by adverse effects, development of drug resistance, and refractory disease, with recurrence rates as high as 25-45%. RECENT FINDINGS: Aerosolization of water, soil, or dusts are the likely sources of MAC-related pulmonary disease in susceptible individuals...
January 15, 2018: Current Opinion in Infectious Diseases
https://www.readbyqxmd.com/read/29343612/structural-and-functional-characterisation-of-the-cytochrome-p450-enzyme-cyp268a2-from-mycobacterium-marinum
#3
Stella A Child, Elise F Naumann, John B Bruning, Stephen G Bell
Members of the cytochrome P450 monooxygenase family CYP268 are found across a broad range of Mycobacterium species including the pathogens Mycobacterium avium, M. colombiense,M. kansasii and Mmarinum CYP268A2, from M. marinum , which is the first member of this family to be studied, was purified and characterised. CYP268A2 was found to bind a variety of substrates with high affinity, including branched and straight-chain fatty acids (C10-C12), acetate esters, and aromatic compounds. The enzyme was also found to bind phenylimidazole inhibitors but not larger azoles, such as ketoconazole...
January 17, 2018: Biochemical Journal
https://www.readbyqxmd.com/read/29343426/environmental-mycobacterium-avium-subsp-hominissuis-have-a-higher-probability-to-act-as-a-recipient-in-conjugation-than-clinical-strains
#4
Salma A Shoulah, Anna M Oschmann, Abdelfattah Selim, Torsten Semmler, Carsten Schwarz, Elisabeth Kamal, Faysal Hamouda, Elsayed Galila, Wilbert Bitter, Astrid Lewin
Mycobacterium avium subsp. hominissuis (MAH) is a widespread opportunistic pathogen that can be isolated from environment (dust, soil and water) and patients with lung or lymphnode infection. In our previous research we revealed the pronounced genetic diversity in MAH by identifying eight different types of a newly described genomic island. In order to identify mechanisms of such horizontal gene transfer we now analyzed the ability of 47 MAH isolates to inherit the conjugative plasmid pRAW from M. marinum. A higher percentage of environmental isolates (22...
January 14, 2018: Plasmid
https://www.readbyqxmd.com/read/29325687/clinical-significance-and-epidemiologic-analyses-of-mycobacterium-avium-and-mycobacterium-intracellulare-lung-disease-from-post-marketing-surveillance
#5
Katsuhiro Suzuki, Atsuyuki Kurashima, Kinji Tatsuno, Jun-Ichi Kadota
BACKGROUND: In Japan, nontuberculous mycobacterial lung disease is mostly attributable to Mycobacterium avium complex (MAC), i.e., M. avium or M. intracellulare. However, clinical features of the disease caused by these two pathogens have not been studied sufficiently yet. METHODS: A post-marketing survey of clarithromycin was performed at 130 facilities across Japan. The data on patients with M. avium infection and patients with M. intracellulare infection were selected from this survey for comparison of background variables and clinical features of the two pathogens...
January 2018: Respiratory Investigation
https://www.readbyqxmd.com/read/29324884/a-cross-sectional-study-on-dutch-layer-farms-to-investigate-the-prevalence-and-potential-risk-factors-for-different-chlamydia-species
#6
Marloes Heijne, Jeanet A van der Goot, Helmi Fijten, Joke W van der Giessen, Eric Kuijt, Catharina B M Maassen, Annika van Roon, Ben Wit, Ad P Koets, Hendrik I J Roest
In poultry several Chlamydia species have been detected, but Chlamydia psittaci and Chlamydia gallinacea appear to be most prevalent and important. Chlamydia psittaci is a well-known zoonosis and is considered to be a pathogen of poultry. Chlamydia gallinacea has been described more recently. Its avian pathogenicity and zoonotic potential have to be further elucidated. Within the Netherlands no data were available on the presence of Chlamydia on poultry farms. As part of a surveillance programme for zoonotic pathogens in farm animals, we investigated pooled faecal samples from 151 randomly selected layer farms...
2018: PloS One
https://www.readbyqxmd.com/read/29321924/lung-mycobacterium-avium-developed-after-removing-an-acupuncture-needle-from-the-lung
#7
Mikihito Saito, Hajime Kasai, Kengo Shimazu, Takashi Urushibara, Tomohiko Iida, Toshihide Shinozaki
Acupuncture needles can cause non-tuberculosis mycobacteria (NTM) infection on the skin, but there are no reports that acupuncture needles inserted into the lung have caused lung NTM infection. A 63-year-old woman, who underwent removal of a broken acupuncture needle inserted into the lung nine years ago, was admitted with nodules in the right lung. The shadow was positioned where the needle had existed. Partial lung resection of the right lower lobe was performed, and the resected area showed caseous necrosis histopathologically...
January 2018: Respirology Case Reports
https://www.readbyqxmd.com/read/29310592/characterization-of-non-tuberculous-mycobacterium-from-humans-and-water-in-an-agropastoral-area-in-zambia
#8
Ngula Monde, Musso Munyeme, Adrian Muwonge, John Bwalya Muma, Sydney Malama
BACKGROUND: The non-tuberculous mycobacteria include those mycobacterium species that are not members of the Mycobacterium tuberculosis complex, the causative agent of pulmonary tuberculosis and Mycobacterium leprae. In Zambia, Non-tuberculous Mycobacteria are gaining recognition as pathogens of public health significance. However, there is scanty information on the isolation and speciation of these organisms for better patient management, consequently reducing the burden of these infections...
January 8, 2018: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29308085/could-mycobacterium-avium-subspecies-paratuberculosis-cause-crohn-s-disease-ulcerative-colitis%C3%A2-and-colorectal-cancer
#9
Ellen S Pierce
Infectious agents are known causes of human cancers. Schistosoma japonicum and Schistosoma mansoni cause a percentage of colorectal cancers in countries where the respective Schistosoma species are prevalent. Colorectal cancer is a complication of ulcerative colitis and colonic Crohn's disease, the two main forms of idiopathic inflammatory bowel disease (IIBD). Mycobacterium avium subspecies paratuberculosis (MAP), the cause of a chronic intestinal disease in domestic and wild ruminants, is one suspected cause of IIBD...
2018: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/29301495/cattle-infection-response-network-and-its-functional-modules
#10
Hamid Beiki, Abbas Pakdel, Ardeshir Nejati Javaremi, Ali Masoudi-Nejad, James M Reecy
BACKGROUND: Weighted Gene Co-expression Network analysis, a powerful technique used to extract co-expressed gene pattern from mRNA expression data, was constructed to infer common immune strategies used by cattle in response to five different bacterial species (Escherichia coli, Mycobacterium avium, Mycobacterium bovis, Salmonella and Staphylococcus aureus) and a protozoa (Trypanosoma Congolense) using 604 publicly available gene expression microarrays from 12 cattle infection experiments...
January 5, 2018: BMC Immunology
https://www.readbyqxmd.com/read/29297824/detection-of-mycobacterium-avium-subspecies-paratuberculosis-in-rock-hyraxes-procavia-capensis-imported-from-south-africa
#11
Kim Fechner, Jenny Schäfer, Pia Münster, Kerstin Ternes, Susanne Döring, Inger Völkel, Franz-Josef Kaup, Claus-Peter Czerny
Mycobacterium avium subspecies paratuberculosis (MAP) causes chronic, progressive, and consecutively fatal enteritis, especially in ruminants. MAP distribution among wildlife is not yet clear. In this study, three wild-born rock hyraxes ( Procavia capensis) had been imported from South Africa to a German zoological garden. During the quarantine period, four young animals were born. The wild-born animals showed symptoms of mild diarrhea shortly after their arrival in the zoological garden, but all routine parasitological and bacteriologic tests performed were negative...
December 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/29286261/molecular-detection-of-mycobacterium-avium-avium-and-mycobacterium-genavense-in-feces-of-free-living-scarlet-macaw-ara-macao-in-costa-rica
#12
Lena C Patiño W, Otto Monge, Gerardo Suzán, Gustavo Gutiérrez-Espeleta, Andrea Chaves
We conducted a study of the two main populations of free-living Scarlet Macaws ( Ara macao) in Costa Rica to detect the causal agents of avian tuberculosis using noninvasive techniques. We analyzed 83 fecal samples collected between February and May 2016 from the central and southern Pacific areas in the country. Using PCR, we first amplified the 16S region of the rRNA, common to all Mycobacterium species. Products from the insertion sequence IS901 and from a 155-base pair (bp) DNA fragment evidenced the presence of both the avian pathogenic Mycobacterium avium subsp...
December 29, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/29284483/bovine-tuberculosis-visible-lesions-in-cattle-culled-during-herd-breakdowns-the-effects-of-individual-characteristics-trade-movement-and-co-infection
#13
Andrew W Byrne, Jordon Graham, Craig Brown, Aoibheann Donaghy, Maria Guelbenzu-Gonzalo, Jim McNair, Robin Skuce, Adrian Allen, Stanley McDowell
BACKGROUND: Bovine tuberculosis (bTB), caused by Mycobacterium bovis, remains a significant problem for livestock industries in many countries worldwide including Northern Ireland, where a test and slaughter regime has utilised the Single Intradermal Comparative Cervical Tuberculin (SICCT) test since 1959. We investigated the variation in post-mortem confirmation based on bTB visible lesion (VL) presence during herd breakdowns using two model suites. We investigated animal-level characteristics, while controlling for herd-level factors and clustering...
December 29, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/29284204/rapid-and-visual-detection-of-mycobacterium-avium-subsp-paratuberculosis-by-recombinase-polymerase-amplification-combined-with-a-lateral-flow-dipstick
#14
Zhao Guimin, Wang Hongmei, Hou Peili, He Chengqiang, He Hongbin
Paratuberculosis (Johne's disease) is a chronic debilitating disease of domestic and wild ruminants. Quick diagnosis could facilitate control; however widespread point-of-care testing is infrequently done due to the lack of robust method. Isothermal recombinase polymerase amplification (RPA) technique has emerged as a novel DNA amplify assay for use in rapid diagnosis. Here, an RPA combined with lateral flow dipstick (LFD) assay was developed to estimate DNA from M.paratuberculosis. First, the specificity and sensitivity of RPA-nfo primer and probe sets were assessed...
December 28, 2017: Journal of Veterinary Science
https://www.readbyqxmd.com/read/29279791/pulmonary-mycobacterium-avium-intracellulare-complex-infection-in-an-infant-a-silent-and-coincidental-finding
#15
Vishal Naik, Pui-Ying Iroh Tam, William Gershan, Andrew A Colin, Nadir Demirel
An 11-month-old healthy infant girl was noted to have left lower lobe (LLL) opacities on chest X-ray (CXR) after developing desaturations during an elective cochlear implant surgery. Repeat CXR 10 days later revealed hyperexpansion of the left lung and persistent LLL opacity. Chest computerized tomography revealed enlarged mediastinal lymph nodes, left mainstem bronchial obstruction, and nodular opacities. Bronchoscopic biopsy of the endobronchial tissue revealed multiple necrotizing granulomas and grew Mycobacterium avium-intracellulare, Streptococcus viridans, and Actinomyces odontolyticus...
December 1, 2017: Pediatric Allergy, Immunology, and Pulmonology
https://www.readbyqxmd.com/read/29276230/disseminated-nontuberculous-mycobacterial-infection-in-a-patient-with-anti-ifn-%C3%AE-autoantibodies
#16
Masakuni Tanimizu, Kenji Mizuno, Masayuki Hashimoto
We treated a 72-year-old Japanese female with sustained high fever and overall body exhaustion. An infectious liver cyst and right lung pneumonia were suspected causes. Hepatic cystectomy and various antibiotics did not resolve symptoms. Pneumonia exacerbation and ascitic fluid retention, left lumbar spinal osteomyelitis, and peri-gastric lymph node abscess penetrating the stomach were observed. Mycobacterium avium was identified in sputum, ascites, vertebral body abscess puncture specimen, and pus mucus secretion in the stomach...
December 2017: Acta Medica Okayama
https://www.readbyqxmd.com/read/29275033/paratuberculosis-in-cattle
#17
REVIEW
Marie-Eve Fecteau
Paratuberculosis remains one of the most important diseases of cattle worldwide. In cattle, the disease is debilitating and is characterized by weight loss and chronic diarrhea in the later stages of infection. However, cattle in the subclinical stages of the disease often show decreased milk production and are at higher risk for development of other common production diseases. Infections with Mycobacterium avium ssp paratuberculosis are difficult to control because of long incubation periods, the absence of clinical signs until advanced stages of the disease, and the lack of completely reliable diagnostic methods in the preclinical stages of the disease...
December 20, 2017: Veterinary Clinics of North America. Food Animal Practice
https://www.readbyqxmd.com/read/29274237/lipase-catalyzed-kinetic-resolution-of-novel-antitubercular-benzoxazole-derivatives
#18
Edyta Łukowska-Chojnacka, Anna Kowalkowska, Agnieszka Napiórkowska
Novel benzoxazole derivatives were synthesized, and their antitubercular activity against sensitive and drug-resistant Mycobacterium tuberculosis strains (M. tuberculosis H37 Rv, M. tuberculosis sp. 210, M. tuberculosis sp. 192, Mycobacterium scrofulaceum, Mycobacterium intracellulare, Mycobacterium fortuitum, Mycobacterium avium, and Mycobacterium kansasii) was evaluated. The chemical step included preparation of ketones, alcohols, and esters bearing benzoxazole moiety. All racemic mixtures of alcohols and esters were separated in Novozyme SP 435-catalyzed transesterification and hydrolysis, respectively...
December 23, 2017: Chirality
https://www.readbyqxmd.com/read/29274054/prevalence-and-risk-factors-of-mycobacterial-infections-in-farm-and-trade-cattle-in-southwestern-nigeria
#19
Victor O Akinseye, Muideen D Adebayo, Oghenekaro O Genesis, Olubukola D Adelakun, Simeon I B Cadmus
We evaluated the prevalence of mycobacterial infections (i.e., Mycobacterium bovis and non-tuberculous mycobacteria [NTM]) and their associated risk factors among cattle herds and trade cattle in southwestern Nigeria. Through cross-sectional study design, cattle herds from three locations were screened using the single intradermal comparative cervical tuberculin test based on two diagnostic standards; more than 4 mm (˃ 4 mm) and more than 2 mm (˃ 2 mm) cut-off points. Abattoir study involved screening trade cattle for tuberculous lesions...
December 22, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/29261761/early-detection-of-mycobacterium-avium-subsp-paratuberculosis-infection-in-cattle-with-multiplex-bead-based-immunoassays
#20
Lingling Li, Bettina Wagner, Heather Freer, Megan Schilling, John P Bannantine, Joseph J Campo, Robab Katani, Yrjo T Grohn, Jessica Radzio-Basu, Vivek Kapur
Johne's Disease (JD), caused by Mycobacterium avium subspecies paratuberculosis (MAP), results in significant economic loss to livestock production. The early detection of MAP infection in animals with extant serological assays has remained challenging due to the low sensitivity of commercially available ELISA tests, a fact that has hampered the development of effective JD control programs. Our recent protein microarray-based studies identified several promising candidate antigens that are immunogenic during different stages of MAP infection...
2017: PloS One
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