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https://www.readbyqxmd.com/read/29799845/the-first-saudi-arabian-national-inventory-study-revealed-the-upcoming-challenges-of-highly-diverse-non-tuberculous-mycobacterial-diseases
#1
Bright Varghese, Mushira Enani, Mohammed Shoukri, Sameera AlJohani, Hawra Al Ghafli, Sahar AlThawadi, Sahal Al Hajoj
BACKGROUND: Incidences of nontuberculous mycobacteria (NTM) causing pulmonary and extrapulmonary diseases are reportedly increasing globally and the current epidemiologic situation in Saudi Arabia remains unclear. To study such trend, we carried out a nationwide systematic epidemiological study focusing on NTM diseases for the first time in the country. METHODS/PRINCIPLE FINDINGS: A nationwide collection of NTM isolates with clinical and demographical data was conducted for a period of 24 months...
May 25, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29798927/draft-genome-sequence-of-mycobacterium-montefiorense-isolated-from-japanese-black-salamander-hynobius-nigrescens
#2
Hanako Fukano, Mitsunori Yoshida, Akane Shimizu, Hajime Iwao, Yukie Katayama, Tsutomu Omatsu, Tetsuya Mizutani, Osamu Kurata, Shinpei Wada, Yoshihiko Hoshino
Mycobacterium montefiorense is a member of the Mycobacterium simiae complex, the largest group of nontuberculous mycobacteria. Here, we report the genome sequence of M. montefiorense isolate BS, isolated from diseased Japanese black salamander ( Hynobius nigrescens ) reared in an aquarium in Japan. This is the first reported case of an M. montefiorense infection in an amphibian.
May 24, 2018: Genome Announcements
https://www.readbyqxmd.com/read/29760130/-mycobacterium-simiae-clinical-radiological-and-microbiological-characteristics-in-97-patients
#3
Nathalie Coolen-Allou, Thomas Touron, Olivier Belmonte, Virgile Gazaille, Michel Andre, Jérôme Allyn, Sandrine Picot, Annabelle Payet, Nicolas Veziris
Mycobacterium simiae is a rare species of slow-growing nontuberculous mycobacteria (NTM).From 2002 to 2017, we conducted a retrospective study that included all patients with NTM-positive respiratory samples detected in two university hospitals of the French overseas department of Reunion Island. We recorded the prevalence of M. simiae in this cohort, as well as the clinical, radiological, and microbiological features of patients with at least one sample positive for M. simiae In our cohort, 97 patients (15...
May 14, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29686086/myb72-dependent-coumarin-exudation-shapes-root-microbiome-assembly-to-promote-plant-health
#4
Ioannis A Stringlis, Ke Yu, Kirstin Feussner, Ronnie de Jonge, Sietske Van Bentum, Marcel C Van Verk, Roeland L Berendsen, Peter A H M Bakker, Ivo Feussner, Corné M J Pieterse
Plant roots nurture a tremendous diversity of microbes via exudation of photosynthetically fixed carbon sources. In turn, probiotic members of the root microbiome promote plant growth and protect the host plant against pathogens and pests. In the Arabidopsis thaliana - Pseudomonas simiae WCS417 model system the root-specific transcription factor MYB72 and the MYB72-controlled β-glucosidase BGLU42 emerged as important regulators of beneficial rhizobacteria-induced systemic resistance (ISR) and iron-uptake responses...
May 29, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29617415/emergence-of-mycobacterium-simiae-a-retrospective-study-from-a-tertiary-care-center-in-lebanon
#5
Amal Hamieh, Ralph Tayyar, Houssam Tabaja, Saeed E L Zein, Pierre Bou Khalil, Nathalie Kara, Zeina A Kanafani, Nadim Kanj, Imad Bou Akl, George Araj, Ghina Berjaoui, Souha S Kanj
OBJECTIVE: The objective of this study is to describe the clinical significance of Mycobacterium simiae at a major tertiary care center in Lebanon. METHODS: This is a retrospective study of patients with positive cultures for M. simiae isolated between 2004 and 2016 at the American University of Beirut Medical Center. RESULTS: This study included 103 M. simiae isolates recovered from 51 patients. Their mean age was 62.7 years. The majority were males and smokers...
2018: PloS One
https://www.readbyqxmd.com/read/29515197/mycobacterium-ahvazicum-sp-nov-the-nineteenth-species-of-the-mycobacterium-simiae-complex
#6
Amar Bouam, Parvin Heidarieh, Abodolrazagh Hashemi Shahraki, Fazel Pourahmad, Mehdi Mirsaeidi, Mohamad Hashemzadeh, Emeline Baptiste, Nicholas Armstrong, Anthony Levasseur, Catherine Robert, Michel Drancourt
Four slowly growing mycobacteria isolates were isolated from the respiratory tract and soft tissue biopsies collected in four unrelated patients in Iran. Conventional phenotypic tests indicated that these four isolates were identical to Mycobacterium lentiflavum while 16S rRNA gene sequencing yielded a unique sequence separated from that of M. lentiflavum. One representative strain AFP-003T was characterized as comprising a 6,121,237-bp chromosome (66.24% guanosine-cytosine content) encoding for 5,758 protein-coding genes, 50 tRNA and one complete rRNA operon...
March 7, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29497402/phylogenomics-and-comparative-genomic-studies-robustly-support-division-of-the-genus-mycobacterium-into-an-emended-genus-mycobacterium-and-four-novel-genera
#7
Radhey S Gupta, Brian Lo, Jeen Son
The genus Mycobacterium contains 188 species including several major human pathogens as well as numerous other environmental species. We report here comprehensive phylogenomics and comparative genomic analyses on 150 genomes of Mycobacterium species to understand their interrelationships. Phylogenetic trees were constructed for the 150 species based on 1941 core proteins for the genus Mycobacterium , 136 core proteins for the phylum Actinobacteria and 8 other conserved proteins. Additionally, the overall genome similarity amongst the Mycobacterium species was determined based on average amino acid identity of the conserved protein families...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29379726/disseminated-mycobacterium-simiae-infection-in-a-non-immunosuppressed-patient-in-the-usa
#8
Heta Javeri, Carolina Vélez-Mejía, Jose Cadena
No abstract text is available yet for this article.
2018: IDCases
https://www.readbyqxmd.com/read/29340007/genomic-insights-into-mycobacterium-simiae-human-colonization
#9
José L Steffani-Vallejo, Marion E Brunck, Erika Y Acosta-Cruz, Rafael Montiel, Francisco Barona-Gómez
Mycobacterium simiae (Karassova V, Weissfeiler J, Kraszanay E, Acta Microbiol Acad Sci Hung 12:275-82, 1965) is a slow-growing nontuberculous Mycobacterium species found in environmental niches, and recently evidenced as an opportunistic Human pathogen. We report here the genome of a clinical isolate of M. simiae (MsiGto) obtained from a patient in Guanajuato, Mexico. With a size of 6,684,413 bp, the genomic sequence of strain MsiGto is the largest of the three M. simiae genomes reported to date. Gene prediction revealed 6409 CDSs in total, including 6354 protein-coding genes and 52 RNA genes...
2018: Standards in Genomic Sciences
https://www.readbyqxmd.com/read/29188063/high-rates-of-nontuberculous-mycobacteria-isolation-from-patients-with-presumptive-tuberculosis-in-iran
#10
M J Nasiri, H Dabiri, A A I Fooladi, S Amini, G Hamzehloo, M M Feizabadi
Nontuberculous mycobacteria (NTM) can cause disease which can be indistinguishable from tuberculosis (TB), posing a diagnostic and therapeutic challenge, particularly in low- and middle-income settings. We aimed to investigate the mycobacterial agents associated with presumptive clinical pulmonary TB in Iran. A total of 410 mycobacterial isolates, obtained between March 2014 and January 2016, from 7600 clinical samples taken from consecutive cases of presumptive diagnosis of TB were identified. Phenotypic and molecular tests were used to identify the isolated organisms to the species level...
January 2018: New Microbes and New Infections
https://www.readbyqxmd.com/read/29109708/differential-identification-of-mycobacterial-species-using-high-resolution-melting-analysis
#11
Azar D Khosravi, Mohammad Hashemzadeh, Abdolrazagh Hashemi Shahraki, Ali Teimoori
Infections caused by non-tuberculous mycobacteria (NTM) is increasing wordwide. Due to the difference in treatment of NTM infections and tuberculosis, rapid species identification of mycobacterial clinical isolates is necessary for the effective management of mycobacterial diseases treatment and their control strategy. In this study, a cost-effective technique, real-time PCR coupled with high-resolution melting (HRM) analysis, was developed for the differentiation of Mycobacterial species using a novel rpoBC sequence...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29061160/molecular-prevalence-of-trypanosome-infections-in-cattle-and-tsetse-flies-in-the-maasai-steppe-northern-tanzania
#12
Mary Simwango, Anibariki Ngonyoka, Happiness J Nnko, Linda P Salekwa, Moses Ole-Neselle, Sharadhuli I Kimera, Paul S Gwakisa
BACKGROUND: African trypanosomosis is a disease of public health and economic importance that poses a major threat to the livelihoods of people living in the Maasai Steppe, where there is a significant interaction between people, livestock and wildlife. The vulnerability of the Maasai people to the disease is enhanced by the interaction of their cattle, which act as vehicles for trypanosomes, and tsetse flies close to wildlife in protected areas. This study was aimed at identification of trypanosome infections circulating in cattle and tsetse flies in order to understand their distribution and prevalence in livestock/wildlife interface areas in the Maasai Steppe...
October 23, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/29030295/the-new-phylogeny-of-the-genus-mycobacterium-the-old-and-the-news
#13
Enrico Tortoli, Tarcisio Fedrizzi, Conor J Meehan, Alberto Trovato, Antonella Grottola, Elisabetta Giacobazzi, Giulia Fregni Serpini, Sara Tagliazucchi, Anna Fabio, Clotilde Bettua, Roberto Bertorelli, Francesca Frascaro, Veronica De Sanctis, Monica Pecorari, Olivier Jousson, Nicola Segata, Daniela M Cirillo
BACKGROUND: Phylogenetic studies of bacteria have been based so far either on a single gene (usually the 16S rRNA) or on concatenated housekeeping genes. For what concerns the genus Mycobacterium these approaches support the separation of rapidly and slowly growing species and the clustering of most species in well-defined phylogenetic groups. The advent of high-throughput shotgun sequencing leads us to revise conventional taxonomy of mycobacteria on the light of genomic data. For this purpose we investigated 88 newly sequenced species in addition to 60 retrieved from GenBank and used the Average Nucleotide Identity pairwise scores to reconstruct phylogenetic relationships within this genus...
December 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/29024173/root-transcriptional-dynamics-induced-by-beneficial-rhizobacteria-and-microbial-immune-elicitors-reveal-signatures-of-adaptation-to-mutualists
#14
Ioannis A Stringlis, Silvia Proietti, Richard Hickman, Marcel C Van Verk, Christos Zamioudis, Corné M J Pieterse
Below ground, microbe-associated molecular patterns (MAMPs) of root-associated microbiota can trigger costly defenses at the expense of plant growth. However, beneficial rhizobacteria, such as Pseudomonas simiae WCS417, promote plant growth and induce systemic resistance without being warded off by local root immune responses. To investigate early root responses that facilitate WCS417 to exert its plant-beneficial functions, we performed time series RNA-Seq of Arabidopsis roots in response to live WCS417 and compared it with MAMPs flg22417 (from WCS417), flg22Pa (from pathogenic Pseudomonas aeruginosa) and fungal chitin...
January 2018: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28990320/non-tuberculosis-mycobacterium-speciation-using-hplc-under-revised-national-tb-control-programme-rntcp-in-india
#15
G Sebastian, S B Nagaraja, T Vishwanatha, M Voderhobli, N Vijayalakshmi, P Kumar
AIMS: Non-Tuberculous Mycobacteria (NTM) are ubiquitous in nature. The data on prevalence of NTM under the RNTCP is scarce. Many NTM species have clinical significance, and hence their identification and speciation are important. METHODS AND RESULTS: It is a cross-sectional study conducted at the five RNTCP accredited culture and drug susceptibility testing (CDST) laboratory. The culture isolates from AFB positive but Immunochromatographic test negative samples were taken for identification and speciation using HPLC...
January 2018: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28938018/genome-wide-identification-of-bacterial-plant-colonization-genes
#16
Benjamin J Cole, Meghan E Feltcher, Robert J Waters, Kelly M Wetmore, Tatiana S Mucyn, Elizabeth M Ryan, Gaoyan Wang, Sabah Ul-Hasan, Meredith McDonald, Yasuo Yoshikuni, Rex R Malmstrom, Adam M Deutschbauer, Jeffery L Dangl, Axel Visel
Diverse soil-resident bacteria can contribute to plant growth and health, but the molecular mechanisms enabling them to effectively colonize their plant hosts remain poorly understood. We used randomly barcoded transposon mutagenesis sequencing (RB-TnSeq) in Pseudomonas simiae, a model root-colonizing bacterium, to establish a genome-wide map of bacterial genes required for colonization of the Arabidopsis thaliana root system. We identified 115 genes (2% of all P. simiae genes) with functions that are required for maximal competitive colonization of the root system...
September 2017: PLoS Biology
https://www.readbyqxmd.com/read/28933031/screening-isolation-and-molecular-identification-of-biodegrading-mycobacteria-from-iranian-ecosystems-and-analysis-of-their-biodegradation-activity
#17
Davood Azadi, Hasan Shojaei, Sina Mobasherizadeh, Abass Daei Naser
Anthropogenic origin pollutants including pesticides, heavy metals, pharmaceuticals and industry chemicals impose many risks to human health and environment and bioremediation has been considered the strategy of choice to reduce the risk of hazardous chemicals. In the current study, we aimed to screen and characterize mycobacteria from the diverse range of Iranian aquatic and terrestrial ecosystems with harsh and unfavorable environmental conditions that can be utilized for biodegradation of target pollutants...
September 20, 2017: AMB Express
https://www.readbyqxmd.com/read/28855835/distribution-of-non-tuberculosis-mycobacteria-strains-from-suspected-tuberculosis-patients-by-heat-shock-protein-65-pcr-rflp
#18
Ali Nour-Neamatollahie, Nayereh Ebrahimzadeh, Seyed Davar Siadat, Farzam Vaziri, Mona Eslami, Abbas Akhavan Sepahi, Sharareh Khanipour, Morteza Masoumi, Fatemeh Sakhaee, Morteza Ghazanfari Jajin, Ahmadreza Bahrmand, Abolfazl Fateh
The genus Mycobacterium contains more than 150 species. Non-tuberculosis mycobacteria (NTM) often cause extrapulmonary and pulmonary disease. Mycobacteria detection at species level is necessary and provides useful information on epidemiology and facilitates successful treatment of patients. This retrospective study aimed to determine the incidence of the NTM isolates and Mycobacterium tuberculosis (Mtb) in clinical specimens collected from Iranian patients during February 2011-December 2013, by PCR-restriction fragment length polymorphism analysis (PRA) of the hsp65 gene...
September 2017: Saudi Journal of Biological Sciences
https://www.readbyqxmd.com/read/28836034/spatio-temporal-study-of-environmental-nontuberculous-mycobacteria-isolated-from-wardha-district-in-central-india
#19
Pranava S Mishra, Pratibha Narang, Rahul Narang, Bidhan Goswami, Deepak K Mendiratta
During the last two decades, nontuberculous mycobacteria (NTM) have gained in importance but there is still a paucity of data, particularly for environmental isolates. We studied, over a period of two years, the spatio-temporal features of NTM isolates obtained from different environmental sources in Wardha district, India. A total of 1398 samples (699 each of soil and water) were tested and 170 (12.2%) yielded NTM isolates, including 123 from soil and 47 from water samples. Out of 170 NTM isolates, 107 (63%) belonged to potentially pathogenic mycobacteria (PPM) and 63 (37%) to the less pathogenic mycobacterial (LPM) group...
January 2018: Antonie Van Leeuwenhoek
https://www.readbyqxmd.com/read/28809146/mycobacterium-talmoniae-sp-nov-a-slowly-growing-mycobacterium-isolated-from-human-respiratory-samples
#20
Rebecca M Davidson, Mary Ann DeGroote, Jamie L Marola, Sarah Buss, Victoria Jones, Michael R McNeil, Alison G Freifeld, L Elaine Epperson, Nabeeh A Hasan, Mary Jackson, Peter C Iwen, Max Salfinger, Michael Strong
A novel slowly growing, non-chromogenic species of the class Actinobacteria was isolated from a human respiratory sample in Nebraska, USA, in 2012. Analysis of the internal transcribed spacer sequence supported placement into the genus Mycobacterium with high sequence similarity to a previously undescribed strain isolated from a patient respiratory sample from Oregon, USA, held in a collection in Colorado, USA, in 2000. The two isolates were subjected to phenotypic testing and whole genome sequencing and found to be indistinguishable...
August 2017: International Journal of Systematic and Evolutionary Microbiology
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