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Olga C Rojas, Rafael B R León-Cachón, Maria Moreno-Treviño, Gloria M González
Mycetoma is a chronic granulomatous, subcutaneous disease endemic in tropical and subtropical countries. It is currently a health problem in rural areas of Africa, Asia and South America. Nine cases of mycetoma were analysed in a retrospective study. All isolates were identified by morphological features. The level of species identification was reached by molecular tools. Definitive identification of fungi was performed using sequence analysis of the ITS of the ribosomal DNA region and the ribosomal large-subunit D1/D2...
October 21, 2016: Mycoses
Reyna Del C Lara-Severino, Miguel A Camacho-López, Edgar Casanova-González, Leobardo M Gómez-Oliván, Ángel H Sandoval-Trujillo, Keila Isaac-Olivé, Ninfa Ramírez-Durán
The use of native strains of microorganisms from soils is an excellent option for bioremediation. To our knowledge, until now there has been no other group working on the isolation of Actinobacteria from contaminated soils in Mexico. In this study, samples of soils close to areas with oil activity in the State of Veracruz, Mexico, were inoculated for the isolation of Actinobacteria. The strains isolated were characterized morphologically, and the concentrations of NaCl and pH were determined for optimal growth...
March 2016: International Microbiology: the Official Journal of the Spanish Society for Microbiology
Gabriela Barcenas-Morales, Peter Jandus, Rainer Döffinger
PURPOSE OF REVIEW: Concise overview of the field of anticytokine autoantibodies with a focus on recent developments. RECENT FINDINGS: Advances in particular in the analysis of autoantibodies to IFNγ, granulocyte-macrophage colony-stimulating factor (GM-CSF) and IFN-1 are presented. The target epitope for anti-IFNγ autoantibodies has been found to have high homology to a protein from Aspergillus suggesting molecular mimicry as a mechanism of breaking self-tolerance...
October 13, 2016: Current Opinion in Allergy and Clinical Immunology
Amity L Roberts, Rebecca M Davidson, Alison G Freifeld, Peter C Iwen
A case of disseminated nocardiosis caused by Nocardia arthritidis in an immunocompromised patient with a history of chronic lymphocytic leukemia and rheumatoid arthritis is presented. This report highlights the use for multilocus sequence typing (MLST) in addition to single gene molecular sequencing to identify rare Nocardia species.
2016: IDCases
Heba Abdelwahab, Julia S Martin Del Campo, Yumin Dai, Camelia Adly, Sohby El-Sohaimy, Pablo Sobrado
A novel mechanism of rifampicin (Rif) resistance has recently been reported in Nocardia farcinica. This new mechanism involves the activity of rifampicin monooxygenase (RifMO), a flavin-dependent monooxygenase that catalyzes the hydroxylation of Rif, which is the first step in the degradation pathway. Recombinant RifMO was overexpressed and purified for biochemical analysis. Kinetic characterization revealed that Rif binding is necessary for effective FAD reduction. RifMO exhibits only a 3-fold coenzyme preference for NADPH over NADH...
2016: PloS One
Ping-Yueh Ho, Omkar Byadgi, Pei-Chyi Wang, Ming-An Tsai, Li-Ling Liaw, Shih-Chu Chen
In the present study, IL-1β cDNA was identified and analyzed from largemouth bass (Micropterus salmoides). Full length IL-1β mRNA was obtained using Rapid Amplification of cDNA Ends (RACE), which contains 78 bp 3'-UTR, a 455 bp 5'-UTR, and an open reading frame (ORF) of 702 bp coding for 233 amino acid residues. The molecular weight and theoretical isoelectric point of largemouth bass IL-1β protein was predicted to be 26.7 kDa and 6.08 respectively. A largemouth bass IL-1β phylogenetic analysis showed a close relation to the IL-1βs of striped trumpeter (Latris lineata), Chinese perch (Siniperca chuatsi), and Japanese sea bass (Lateolabrax japonicus)...
October 1, 2016: International Journal of Molecular Sciences
Pitiporn Asvapathanagul, Betty H Olson
AIMS: to develop qPCR broad spectrum primers combined with a Nocardia genus specific probe for the identification of a broad spectrum of Nocardia spp. to analyze the effects of using this developed primer and probe set on the ability to quantify Nocardia spp. in mixed DNA. METHODS AND RESULTS: The consequences of using a degenerative primer set and species specific probe for the genus Nocardia on qPCR assays were examined using DNA extracts of pure cultures and activated sludge...
October 4, 2016: Journal of Applied Microbiology
Songsong Yu, Jing Wang, Qiuhong Fang, Jixin Zhang, Fengcai Yan
Nocardiosis is a rare bacterial infection of either the lungs (pulmonary) or body (systemic) that usually affects immunocompromised individuals. It is caused by Gram-positive, aerobic actinomycetes of the Nocardia genus. Multiple high-density sheet shadows in both lungs along with nodules or cavities are the most common presentations of nocardiosis, whereas a large pulmonary mass is considered to be rare. However, there is no specificity in the clinical manifestation of the disease. Therefore, isolation and identification of Nocardia strains is the only reliable diagnostic method...
October 2016: Experimental and Therapeutic Medicine
Yutaro Hino, Noriko Doki, Yasushi Senoo, Noritaka Sekiya, S Kurosawa, Satoshi Tsuboi, Kazuteru Ohashi
Nocardiosis is a rare bacterial infection occurring mainly in patients with deficient cell-mediated immunity. Although disseminated nocardiosis after allogeneic hematopoietic stem cell transplantation (allo-HSCT) is a rare complication, it is associated with high mortality. Moreover, after allo-HSCT, nocardiosis may be mistaken for other bacterial or fungal infections because clinical and radiographic findings of pulmonary, cerebral, and cutaneous nocardiosis lesions are non-specific. Here, we report a case of disseminated nocardiosis (caused by Nocardia abscessus) with skin, pulmonary, liver, lymph node, and multiple brain abscesses in a patient after allo-HSCT...
October 1, 2016: Transplant Infectious Disease: An Official Journal of the Transplantation Society
María Pascual-Gallego, Pedro Alonso-Lera, Ana Arribi, Juan A Barcia, Javier Marco
Nocardial brain abscesses are uncommon and rarely occur in patients without predisposing factors. They may be mistaken for gliomas or necrotic metastases, and surgical intervention may be required to make the diagnosis. We report the first case of Nocardia farcinica cerebellar abscess in a patient without immunosuppression. He presented to us with headache and instability beginning a week before. Brain magnetic resonance imaging (MRI) revealed a cystic lesion located at the right cerebellar hemisphere, hypointense in T1 and hyperintense in T2, with a fine wall that enhanced after injection of gadolinium...
October 2016: Asian Journal of Neurosurgery
E M Le Coustumier, E Denes, C Martin, P Weinbreck
INTRODUCTION: Nocardiosis are uncommon. The diagnosis may be difficult, with significant morbidity and mortality, often occurring on frail patients. Few data are available in France. METHODS: A retrospective single center study was conducted from 2002 to 2014 and included all patients with at least one positive microbiological sample for Nocardia with a follow-up in our hospital. RESULTS: Nineteen patients, including 15 men, were included with a mean age of 58 years (25-85)...
September 19, 2016: La Revue de Médecine Interne
Hitoshi Kuroda, Hitoshi Sugawara, Akira Ishii, Shunsuke Funazaki
No abstract text is available yet for this article.
2016: Internal Medicine
Akira Takashima, Shusuke Yagi, Koji Yamaguchi, Syunsuke Watanabe, Nobuaki Yamamoto, Hiroyuki Ito, Muneyuki Kadota, Tomoya Hara, Hiromu Yamazaki, Takayuki Ise, Kenya Kusunose, Takeshi Tobiume, Hirotsugu Yamada, Takeshi Soeki, Tetsuzo Wakatsuki, Masataka Sata
No abstract text is available yet for this article.
September 15, 2016: Circulation Journal: Official Journal of the Japanese Circulation Society
H Boamah, P Puranam, R M Sandre
Nocardia farcinica is a gram-positive, partially acid-fast, methenamine silver-positive aerobic actinomycete that is infrequently associated with nocardiosis. The relative frequency of Nocardia farcinica isolates in nocardiosis is unknown but thought to be under diagnosis. It is increasingly been recognized in immunocompetent patients. We report a case of disseminated Nocardia farcinica causing brain abscess in 55 year old immunocompetent man who was successfully treated with long term antibiotics. The present report illustrates that early detection and treatment of disseminated Nocardia farcinica can lead to a good outcome...
2016: IDCases
Tetsuo Fujita, Jun Ikari, Akira Watanabe, Koichiro Tatsumi
Pulmonary nocardiosis is a rare but potentially serious infection typically in immunosuppressed patients (ISPs). It is also known to occur in immunocompetent patients (ICPs). However, little is currently known regarding the clinical characteristics and radiographic findings of pulmonary nocardiosis specifically in ICPs. In this study, 30 patients with pulmonary nocardiosis were identified and 10 were considered to be colonized. Of all patients with pulmonary nocardiosis, 12 patients were ICPs and 18 were ISPs...
September 5, 2016: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
Mehdi Fatahi-Bafghi, Parvin Heidarieh, Masoumeh Rasouli-Nasab, Shadi Habibnia, Abdorazagh Hashemi-Shahraki, Seyyed Saeed Eshraghi
Nocardial infections occur in different organs of the body and are common in immune disorder diseases of individuals. The aim of this study was to assess Nocardia species identification by phenotypic tests and molecular techniques applied to nocardiosis in Iranian patients. In the current study, various clinical samples were collected and cultured on conventional media and using the paraffin baiting method. Various phenotypic tests were performed. For accurate identification at the species level, restriction fragment length polymorphisms (RFLP) in the hsp65 and partial 16S rRNA genes and full gene sequencing of the 16S rRNA gene were used...
October 2016: Antonie Van Leeuwenhoek
Cecília Bittencourt Severo, Letícia Beatriz Matter, Flávio de Mattos Oliveira, Agueda Palmira Castagna Vargas, Sadi Marcelo Schio, José de Jesus Peixoto Camargo, Bruno Hochhegger, Luiz Carlos Severo
We report herein a case of thoracic infection due to Nocardia nova following lung re-transplantation performed for emphysema related to alpha-1-antitrypsin deficiency. The infection extended from the lung into the pleural space, thoracic wall, and mediastinum, presenting as pericarditis and empyema necessitatis. Nocardia nova was identified by 16S ribosomal deoxyribonucleic acid (rDNA) sequencing and phylogenetic analysis. According to a literature search of PubMed, LILACS and MEDLINE databases, we describe herein the first case of empyema necessitatis caused by N...
July 2016: Revista da Sociedade Brasileira de Medicina Tropical
Rajalakshmi Arjun, Arjun Padmanabhan, Bhanu Prakash Reddy Attunuru, Prerna Gupta
Nocardiosis is an uncommon gram-positive bacterial infection caused by aerobic actinomycetes of the genus Nocardia. It can be localized or systemic and is regarded as an opportunistic infection that is commonly seen in immunocompromised hosts. We report a case of disseminated nocardiosis caused by Nocardia cyriacigeorgica in a patient with underlying malignancy in whom the clinical presentation was highly suggestive of a metastatic disease.
July 2016: Lung India: Official Organ of Indian Chest Society
Akashdeep Singh, Deepinder Chhina, R K Soni, Chandan Kakkar, U S Sidhu
BACKGROUND: Pulmonary nocardiosis is a rare but a life-threatening infection caused by Nocardia spp. The diagnosis is often missed and delayed resulting in delay in appropriate treatment and thus higher mortality. AIM: In this study, we aim to evaluate the clinical spectrum and outcome of patients with pulmonary nocardiosis. METHODS: A retrospective, 5-year (2009-2014) review of demographic profile, risk factors, clinical manifestations, imaging findings, treatment, and outcome of patients with pulmonary nocardiosis admitted to a tertiary care hospital...
July 2016: Lung India: Official Organ of Indian Chest Society
Björn Johansson, Per Fagerholm, Gabor Petranyi, Margareta Claesson Armitage, Neil Lagali
No abstract text is available yet for this article.
August 29, 2016: Acta Ophthalmologica
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