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https://www.readbyqxmd.com/read/28329650/increased-risk-of-opportunistic-infections-among-patients-with-moderate-to-severe-psoriasis-a-population-based-cohort-study-in-the-united-kingdom
#1
Junko Takeshita, Daniel B Shin, Alexis Ogdie, Joel M Gelfand
Infection is the second leading cause of death among psoriasis patients on phototherapy or systemic medications. The types of infections associated with psoriasis remain poorly understood. The aim of our study was to determine the risk of opportunistic infection (OI) among patients with psoriasis. We conducted a cohort study of patients with (N=199,700) and without (N=954,315) psoriasis in The Health Improvement Network electronic medical record database. Patients receiving phototherapy or systemic therapy were considered to have moderate-to-severe psoriasis (N=12,442)...
September 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329348/outcome-and-treatment-of-nocardiosis-after-solid-organ-transplantation-new-insights-from-a-european-study
#2
David Lebeaux, Romain Freund, Christian van Delden, Hélène Guillot, Sierk D Marbus, Marie Matignon, Eric Van Wijngaerden, Benoit Douvry, Julien De Greef, Fanny Vuotto, Leïla Tricot, Mario Fernández-Ruiz, Jacques Dantal, Cédric Hirzel, Jean-Philippe Jais, Veronica Rodriguez-Nava, Frédérique Jacobs, Olivier Lortholary, Julien Coussement
Background: Solid organ transplant (SOT) recipients are at risk of nocardiosis, a rare opportunistic bacterial infection, but prognosis and outcome of these patients are poorly defined. Our objectives were to identify factors associated with one-year mortality after nocardiosis and describe the outcome of patients receiving short-course antibiotics (≤120 days). Methods: We analyzed data from a multicenter European case-control study that included 117 SOT recipients with nocardiosis diagnosed between 2000 and 2014...
February 4, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28315436/nocardia-rubra-cell-wall-skeleton-promotes-cd4-t-cell-activation-and-drives-th1-immune-response
#3
Guangchuan Wang, Jie Wu, Miao Miao, Heng Dou, Ning Nan, Mingsheng Shi, Guang Yu, Fengping Shan
Several lines of evidences have shown that Nocardia rubra cell wall skeleton (Nr-CWS) has immunoregulatory and anti-tumor activities. However, there is no information about the effect of Nr-CWS on CD4(+) T cells. The aim of this study was to explore the effect of Nr-CWS on the phenotype and function of CD4(+) T cells. Our results of in vitro experiments showed that Nr-CWS could significantly up-regulate the expression of CD69 and CD25 on CD4(+) T cells, promote the proliferation of CD4(+) T cells, increase the production of IFN-γ, TNF-α and IL-2 in the supernatants, but has no significant effect on the apoptosis and death of CD4(+) T cells...
March 14, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28299015/endogenous-nocardial-endophthalmitis-in-an-immunosuppressed-patient-a-serious-warning-of-an-underlying-life-threatening-and-blinding-disorder
#4
Hemant Trehan, Jaya Kaushik, Vaibhav Kumar Jain, Jitendra Kumar Singh Parihar, Abhijit Avasthi
PURPOSE: To report a case of bilateral endogenous nocardial endophthalmitis with central nervous system involvement in an immunocompromised individual with an extremely poor outcome. CASE REPORT: A 35-year-old man with a history of long-term, prescribed oral steroid use for membranoproliferative glomerulonephritis presented with profound bilateral vision loss. Patient's diagnosis of bilateral endogenous nocardial endophthalmitis was delayed. Nocardia was finally isolated from a brain biopsy after a repeat magnetic resonance imaging revealed a brain abscess...
January 2017: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/28290754/pulmonary-nocardia-beijingensis-infection-associated-with-the-use-of-alemtuzumab-in-a-patient-with-multiple-sclerosis
#5
Marwan Sheikh-Taha, Lourdes C Corman
Nocardia is a Gram-positive aerobic pathogen that usually affects immunocompromised patients. We report a case of pulmonary infection caused by a rare Nocardia species, Nocardia beijingensis, in a 50-year-old woman who had received alemtuzumab for the treatment of her multiple sclerosis. The invasive pulmonary infection was successfully treated with meropenem.
February 1, 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/28275374/cloning-expression-invasion-and-immunological-reactivity-of-a-mammalian-cell-entry-protein-encoded-by-the-mce1-operon-of-nocardia-farcinica
#6
Xingzhao Ji, Xiaoluo Tan, Xuexin Hou, Chenchen Si, Shuai Xu, Lu Tang, Xiuqin Yuan, Zhenjun Li
Bacterial mammalian cell entry (Mce) proteins have been implicated in pathogen invasion of mammalian host cells. The aim of this study was to examine the invasion-conferring ability of mce1E operon-encoded proteins, in vivo expression of Mce1E in cells from infected mice and rabbits, and Mce1E immunogenicity. Nocardia farcinica mce1E was cloned into pet30a(+) vectors, expressed in Escherichia coli, and purified. Invasion assays, transmission electron microscopy (TEM), immunoblots, and enzyme-linked immunosorbent assay (ELISA) detection of cytokines were conducted...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28273710/-pulmonary-nocardia-infection-with-systemic-lupus-erythematous-in-a-child
#7
(no author information available yet)
No abstract text is available yet for this article.
March 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28264516/isolation-and-structure-identification-of-novel-brominated-diketopiperazines-from-nocardia-ignorata-a-lichen-associated-actinobacterium
#8
Alba Noël, Solenn Ferron, Isabelle Rouaud, Nicolas Gouault, Jean-Pierre Hurvois, Sophie Tomasi
Actinobacteria are well known for their potential in biotechnology and their production of metabolites of interest. Lichens are a promising source of new bacterial strains, especially Actinobacteria, which afford a broad chemical diversity. In this context, the culture medium of the actinobacterium Nocardia ignorata, isolated from the terrestrial lichen Collema auriforme, was studied. The strain was cultivated in a BioFlo 115 bioreactor, and the culture medium was extracted using an XAD7HP resin. Five known diketopiperazines: cyclo (l-Pro-l-OMet) (1), cyclo (l-Pro-l-Tyr) (2), cyclo (d-Pro-l-Tyr) (3), cyclo (l-Pro-l-Val) (4), cyclo (l-Pro-l-Leu) (5), and one auxin derivative: indole-carboxaldehyde (8) were isolated, along with two new brominated diketopiperazines: cyclo (d-Pro-l-Br-Tyr) (6) and cyclo (l-Pro-l-Br-Tyr) (7)...
February 28, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28257489/analysis-of-the-complete-genome-sequence-of-nocardia-seriolae-utf1-the-causative-agent-of-fish-nocardiosis-the-first-reference-genome-sequence-of-the-fish-pathogenic-nocardia-species
#9
Motoshige Yasuike, Issei Nishiki, Yuki Iwasaki, Yoji Nakamura, Atushi Fujiwara, Yoshiko Shimahara, Takashi Kamaishi, Terutoyo Yoshida, Satoshi Nagai, Takanori Kobayashi, Masaya Katoh
Nocardiosis caused by Nocardia seriolae is one of the major threats in the aquaculture of Seriola species (yellowtail; S. quinqueradiata, amberjack; S. dumerili and kingfish; S. lalandi) in Japan. Here, we report the complete nucleotide genome sequence of N. seriolae UTF1, isolated from a cultured yellowtail. The genome is a circular chromosome of 8,121,733 bp with a G+C content of 68.1% that encodes 7,697 predicted proteins. In the N. seriolae UTF1 predicted genes, we found orthologs of virulence factors of pathogenic mycobacteria and human clinical Nocardia isolates involved in host cell invasion, modulation of phagocyte function and survival inside the macrophages...
2017: PloS One
https://www.readbyqxmd.com/read/28252662/susceptibility-profiles-of-nocardia-spp-to-antimicrobial-and-antituberculotic-agents-detected-by-a-microplate-alamar-blue-assay
#10
Pan Zhao, Xiujuan Zhang, Pengcheng Du, Guilian Li, Luxi Li, Zhenjun Li
Nocardia species are ubiquitous in natural environments and can cause nocardiosis. Trimethoprim-sulfamethoxazole has long been the monotherapy treatment of choice, but resistance to this treatment has recently emerged. In this study, we used microplate Alamar Blue assays to determine the antimicrobial susceptibility patterns of 65 standard Nocardia isolates, including 28 type strains and 20 clinical Nocardia isolates, to 32 antimicrobial agents, including 13 little studied drugs. Susceptibility to the most commonly used drug, trimethoprim-sulfamethoxazole, was observed in 98% of the isolates...
March 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28231023/increasing-nocardia-incidence-associated-with-bronchiectasis-at-a-tertiary-care-center
#11
Michael H Woodworth, Jennifer L Saullo, Paul M Lantos, Gary M Cox, Jason E Stout
RATIONALE: Nocardia is a genus of pathogens that most commonly afflict immunocompromised hosts but may be an emerging infection among persons with bronchiectasis. OBJECTIVES: To examine the epidemiology and clinical presentation of adult patients with Nocardia and bronchiectasis relative to other patient groups. METHODS: We examined a retrospectively assembled cohort of adults at Duke University Hospital in Durham, North Carolina with at least one positive culture from a bodily fluid or tissue specimen for Nocardia between January 1996 and December 2013...
March 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28217646/nocardia-isolation-of-soil
#12
Mehdi Fatahi Bafghi, Seyyed Saeed Eshraghi
No abstract text is available yet for this article.
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/28199365/click-chemistry-approach-to-study-mycoloylated-proteins-evidence-for-porb-and-porc-porins-mycoloylation-in-corynebacterium-glutamicum
#13
Hanane Issa, Emilie Huc-Claustre, Thamila Reddad, Nolwenn Bonadé Bottino, Maryelle Tropis, Christine Houssin, Mamadou Daffé, Nicolas Bayan, Nathalie Dautin
Protein mycoloylation is a recently identified, new form of protein acylation. This post-translational modification consists in the covalent attachment of mycolic acids residues to serine. Mycolic acids are long chain, α-branched, β-hydroxylated fatty acids that are exclusively found in the cell envelope of Corynebacteriales, a bacterial order that includes important genera such as Mycobacterium, Nocardia or Corynebacterium. So far, only 3 mycoloylated proteins have been identified: PorA, PorH and ProtX from C...
2017: PloS One
https://www.readbyqxmd.com/read/28192433/review-of-21-cases-of-mycetoma-from-1991-to-2014-in-rio-de-janeiro-brazil
#14
Felipe Maurício Soeiro Sampaio, Bodo Wanke, Dayvison Francis Saraiva Freitas, Janice Mery Chicarino de Oliveira Coelho, Maria Clara Gutierrez Galhardo, Marcelo Rosandiski Lyra, Maria Cristina da Silva Lourenço, Rodrigo de Almeida Paes, Antonio Carlos Francesconi do Valle
Mycetoma is caused by the subcutaneous inoculation of filamentous fungi or aerobic filamentous bacteria that form grains in the tissue. The purpose of this study is to describe the epidemiologic, clinic, laboratory, and therapeutic characteristics of patients with mycetoma at the Oswaldo Cruz Foundation in Rio de Janeiro, Brazil, between 1991 and 2014. Twenty-one cases of mycetoma were included in the study. There was a predominance of male patients (1.3:1) and the average patient age was 46 years. The majority of the cases were from the Southeast region of Brazil and the feet were the most affected anatomical region (80...
February 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28176520/-pulmonary-co-infection-due-to-nocardia-cyriacigeorgica-and-aspergillus-fumigatus
#15
R Trastoy, T Manso, X García, G Barbeito, D Navarro, P Rascado, M L Pérez Del Molino
OBJECTIVE: Pulmonary nocardiosis is an uncommon pulmonary infection caused by aerobic gram-positive bacteria of the genus Nocardia. Nocardia sp. are environmental organisms spread worldwide. Approximately 50 Nocardia species have been described to date, about 30 of which are known to cause human disease. Nocardia cyriacigeorgica was first reported in 2001. CASE REPORT: We report a case of infection caused by N. cyriacigeorgica in a patient with B-cells non-Hodgkin lymphoma and diabetes mellitus...
February 8, 2017: Revista Española de Quimioterapia: Publicación Oficial de la Sociedad Española de Quimioterapia
https://www.readbyqxmd.com/read/28150374/nocardia-liver-abscess-post-liver-transplantation-a-rare-presentation
#16
Pavan Hanchanale, Mayank Jain, Joy Varghese, Jayanthi V, Mohamed Rela
Nocardiosis is usually a disseminated disease seen in immunocompromised individuals. We herein present a rare case of isolated Nocardia liver abscess post liver transplantation. The patient responded well to treatment and is on long-term antibiotics for Nocardia infection.
February 1, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28129236/endogenous-nocardia-endophthalmitis-presenting-as-a-mass-lesion-in-a-patient-with-metatstatic-nonsmall-cell-carcinoma-of-the-lung
#17
Brian Lee, Paul Drayna, Amanda C Maltry, Craig M Mason, Sandra R Montezuma, Dara Koozekanani
PURPOSE: To report a case of Nocardia cyriacigeorgica endophthalmitis. METHODS: Case report. RESULTS: A 71-year-old man on long-term steroid therapy for poor respiratory function from lung carcinoma and presumed recent liver metastases presented with a four week history of blurry vision in the left eye. Ophthalmic examination revealed a white elevated mass in the macula with hemorrhage, concerning for metastasis. The patient was treated for presumed ocular metastases but had poor response to radiotherapy and was diagnosed four weeks later with N...
January 26, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28116103/first-case-of-nocardia-amamiensis-pulmonary-infection-in-mexico
#18
A Martinez-Gamboa, M E Cervera-Hernandez, P Torres-Gonzalez, A Rangel-Cordero, A Ponce-de-Leon, J Sifuentes-Osornio
We report a case of Nocardia amamiensis pulmonary infection in a 43-year-old immunocompromised woman. The patient was treated with imipenem/cilastatin and trimethoprim/sulfamethoxazole and had a favourable outcome. It is important that laboratories perform species identification to understand the epidemiology and susceptibility patterns of the different Nocardia spp.
March 2017: New Microbes and New Infections
https://www.readbyqxmd.com/read/28112922/nabscessins-a-and-b-aminocyclitol-derivatives-from-nocardia-abscessus-ifm-10029-t
#19
Shoko Hara, Naoki Ishikawa, Yasumasa Hara, Tatsuo Nehira, Kanae Sakai, Tohru Gonoi, Masami Ishibashi
Two new aminocyclitol amide derivatives, nabscessins A (1) and B (2), were isolated from the culture broth of a pathogenic actinomycete species, Nocardia abscessus IFM 10029(T). The structures of nabscessins A and B were elucidated by spectral studies, and the compounds showed antifungal activity against Cryptococcus neoformans, with IC50 values of 32 and 16 μg/mL, respectively.
February 24, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/28112090/pulmonary-nocardiosis-caused-by-nocardia-otitidiscaviarum-in-an-adult-asthmatic-female-patient-the-presence-of-acid-fast-branching-filaments-is-always-significant
#20
A Mahgoub, S A Gumaa, M R P Joseph, M S Saleh, A H A Elsheikh, A I Elkhalifa, E Elhaj, R R M Salih, M E Hamid
We report a case of pulmonary nocardiosis in a 41-year-old asthma patient. Chest radiographs showed bilateral air space and consolidations.Acid-fast branching filaments were demonstrated in sputum, and the grown organism was identified phenotypically and confirmed using16S rDNA sequencing (accession no. KX500116). The patient received a combination of medical treatments, but developed complications,which were managed over the next 3 months, after which she was discharged. Pulmonary nocardiosis should be considered in patientsundergoing steroid therapy or when a chronic infection does not respond to first-line treatment...
December 21, 2016: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
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