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Serafino A, Bertinat YA, Bueno J, Pittaluga JR, Birnberg Weiss F, Milillo MA, Barrionuevo P. Beyond its preferential niche: Brucella abortus RNA down-modulates the IFN-γ-induced MHC-I expression in epithelial and endothelial cells. PLoS One 2024; 19:e0306429. [PMID: 38980867 PMCID: PMC11232970 DOI: 10.1371/journal.pone.0306429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Accepted: 06/17/2024] [Indexed: 07/11/2024] Open
Abstract
Brucella abortus (Ba) is a pathogen that survives inside macrophages. Despite being its preferential niche, Ba infects other cells, as shown by the multiple signs and symptoms humans present. This pathogen can evade our immune system. Ba displays a mechanism of down-modulating MHC-I on monocytes/macrophages in the presence of IFN-γ (when Th1 response is triggered) without altering the total expression of MHC-I. The retained MHC-I proteins are located within the Golgi Apparatus (GA). The RNA of Ba is one of the PAMPs that trigger this phenomenon. However, we acknowledged whether this event could be triggered in other cells relevant during Ba infection. Here, we demonstrate that Ba RNA reduced the surface expression of MHC-I induced by IFN-γ in the human bronchial epithelium (Calu-6), the human alveolar epithelium (A-549) and the endothelial microvasculature (HMEC) cell lines. In Calu-6 and HMEC cells, Ba RNA induces the retention of MHC-I in the GA. This phenomenon was not observed in A-549 cells. We then evaluated the effect of Ba RNA on the secretion of IL-8, IL-6 and MCP-1, key cytokines in Ba infection. Contrary to our expectations, HMEC, Calu-6 and A-549 cells treated with Ba RNA had higher IL-8 and IL-6 levels compared to untreated cells. In addition, we showed that Ba RNA down-modulates the MHC-I surface expression induced by IFN-γ on human monocytes/macrophages via the pathway of the Epidermal Growth Factor Receptor (EGFR). So, cells were stimulated with an EGFR ligand-blocking antibody (Cetuximab) and Ba RNA. Neutralization of the EGFR to some extent reversed the down-modulation of MHC-I mediated by Ba RNA in HMEC and A-549 cells. In conclusion, this is the first study exploring a central immune evasion strategy, such as the downregulation of MHC-I surface expression, beyond monocytes and could shed light on how it persists effectively within the host, enduring unseen and escaping CD8+ T cell surveillance.
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Affiliation(s)
- Agustina Serafino
- Instituto de Medicina Experimental-Consejo Nacional de Investigaciones Científicas y Técnicas, Academia Nacional de Medicina; Buenos Aires, Argentina
| | - Yasmín A. Bertinat
- Instituto de Medicina Experimental-Consejo Nacional de Investigaciones Científicas y Técnicas, Academia Nacional de Medicina; Buenos Aires, Argentina
| | - Jorgelina Bueno
- Instituto de Medicina Experimental-Consejo Nacional de Investigaciones Científicas y Técnicas, Academia Nacional de Medicina; Buenos Aires, Argentina
| | - José R. Pittaluga
- Instituto de Medicina Experimental-Consejo Nacional de Investigaciones Científicas y Técnicas, Academia Nacional de Medicina; Buenos Aires, Argentina
| | - Federico Birnberg Weiss
- Instituto de Medicina Experimental-Consejo Nacional de Investigaciones Científicas y Técnicas, Academia Nacional de Medicina; Buenos Aires, Argentina
| | - M. Ayelén Milillo
- Universidad Nacional de Río Negro. Instituto de Estudios en Ciencia, Tecnología, Cultura y Desarrollo. Río Negro, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas. Argentina
| | - Paula Barrionuevo
- Instituto de Medicina Experimental-Consejo Nacional de Investigaciones Científicas y Técnicas, Academia Nacional de Medicina; Buenos Aires, Argentina
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Abdollahi M, Javadi V, Shiari R, Rahmani K. Pulmonary involvement in brucellosis: A case report and literature review. Clin Case Rep 2021; 9:1354-1357. [PMID: 33768843 PMCID: PMC7981607 DOI: 10.1002/ccr3.3769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 12/12/2020] [Accepted: 12/24/2020] [Indexed: 11/29/2022] Open
Abstract
Although pulmonary involvement is rare in brucellosis it should be considered as a causative agent in patients with prolonged fever and arthritis. Also, it should be presented with manifestations resembling systemic juvenile idiopathic arthritis.
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Affiliation(s)
- Maryam Abdollahi
- Department of Pediatric RheumatologyShahid Beheshti University of Medical SciencesTehranIran
| | - Vadood Javadi
- Department of Pediatric RheumatologyShahid Beheshti University of Medical SciencesTehranIran
| | - Reza Shiari
- Department of Pediatric RheumatologyShahid Beheshti University of Medical SciencesTehranIran
| | - Khosro Rahmani
- Department of Pediatric RheumatologyShahid Beheshti University of Medical SciencesTehranIran
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Bishai WR, Timmins GS. Potential for breath test diagnosis of urease positive pathogens in lung infections. J Breath Res 2019; 13:032002. [DOI: 10.1088/1752-7163/ab2225] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Shen L, Jiang C, Jiang R, Fang W, Feng Q, Wang L, Wu C, Ma Z. Diagnosis and classification in MRI of brucellar spondylitis. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.jrid.2017.08.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Fuchs I, Osyntsov L, Refaely Y, Ciobotaro P, Zimhony O. Ritual Slaughter as Overlooked Risk Factor for Brucellosis. Emerg Infect Dis 2016; 22:746-8. [PMID: 26981642 PMCID: PMC4806964 DOI: 10.3201/eid2204.151192] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Solera J, Solís García Del Pozo J. Treatment of pulmonary brucellosis: a systematic review. Expert Rev Anti Infect Ther 2016; 15:33-42. [PMID: 27790937 DOI: 10.1080/14787210.2017.1254042] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
INTRODUCTION Pulmonary involvement is a rare, focal complication of human brucellosis. The aim of this review is to describe clinical and radiologic features, treatment administered and clinical course of these patients. Areas covered: We conducted a systematic search of scientific reports of brucellosis with pulmonary involvement published from January 1985 to July 2016. Four main patterns of disease were observed: pneumonia, pleural effusion, nodules and interstitial pattern. Cough and fever were the most common symptoms. Brucella spp. culture was obtained from blood (50%) or pleural fluid. Treatment is based on the same antibiotics and combinations of antibiotics as for patients with acute no complicated brucellosis. The most frequent antimicrobial combination was doxycycline and rifampin for six weeks. The clinical course was favorable in most reports, and mortality was remarkably low (<1%). Expert commentary: Non-specific clinical and radiological manifestations were the main reason for the delay in proper treatment. Difficulty in distinguishing Brucellosis from other pulmonary infections, such as tuberculosis, sometimes posed an added diagnostic challenge.
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Affiliation(s)
- Javier Solera
- a Servicio de Medicina Interna , Complejo Hospitalario Universitario de Albacete , Albacete , Spain.,b Departamento de Ciencias Médicas, Facultad de Medicina de Albacete , Universidad de Castilla-La Mancha , Albacete , Spain
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7
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Differenzialdiagnosen beim Nachweis von Hefen und hefeähnlichen Organismen. DER PATHOLOGE 2013; 34:519-27. [DOI: 10.1007/s00292-013-1828-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Moreno Caballero M, López Ruiz JM, Sánchez Palencia A, Navarro-Pelayo Laínez M, Llamas Elvira JM. [PET-CT scan in a case of suspicion of metastatic dissemination due to the presence of multiple pulmonary nodules]. REVISTA ESPANOLA DE MEDICINA NUCLEAR 2011; 30:258-259. [PMID: 21440334 DOI: 10.1016/j.remn.2010.09.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2010] [Revised: 09/27/2010] [Accepted: 09/28/2010] [Indexed: 05/30/2023]
Affiliation(s)
- M Moreno Caballero
- Servicio de Medicina Nuclear, Hospital Universitario Virgen de las Nieves, Granada, Spain.
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Characterization of novel Brucella strains originating from wild native rodent species in North Queensland, Australia. Appl Environ Microbiol 2010; 76:5837-45. [PMID: 20639360 DOI: 10.1128/aem.00620-10] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We report on the characterization of a group of seven novel Brucella strains isolated in 1964 from three native rodent species in North Queensland, Australia, during a survey of wild animals. The strains were initially reported to be Brucella suis biovar 3 on the basis of microbiological test results. Our results indicated that the rodent strains had microbiological traits distinct from those of B. suis biovar 3 and all other Brucella spp. To reinvestigate these rodent strains, we sequenced the 16S rRNA, recA, and rpoB genes and nine housekeeping genes and also performed multiple-locus variable-number tandem-repeat (VNTR) analysis (MLVA). The rodent strains have a unique 16S rRNA gene sequence compared to the sequences of the classical Brucella spp. Sequence analysis of the recA, rpoB, and nine housekeeping genes reveals that the rodent strains are genetically identical to each other at these loci and divergent from any of the currently described Brucella sequence types. However, all seven of the rodent strains do exhibit distinctive allelic MLVA profiles, although none demonstrated an amplicon for VNTR 07, whereas the other Brucella spp. did. Phylogenetic analysis of the MLVA data reveals that the rodent strains form a distinct clade separate from the classical Brucella spp. Furthermore, whole-genome sequence comparison using the maximal unique exact matches index (MUMi) demonstrated a high degree of relatedness of one of the seven rodent Brucella strains (strain NF 2653) to another Australian rodent Brucella strain (strain 83-13). Our findings strongly suggest that this group of Brucella strains isolated from wild Australian rodents defines a new species in the Brucella genus.
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Yingst SL, Huzella LM, Chuvala L, Wolcott M. A rhesus macaque (Macaca mulatta) model of aerosol-exposure brucellosis (Brucella suis): pathology and diagnostic implications. J Med Microbiol 2010; 59:724-730. [PMID: 20223898 PMCID: PMC3052509 DOI: 10.1099/jmm.0.017285-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The US Centers for Disease Control and Prevention lists Brucella as a potential bioterrorism threat requiring enhanced diagnostic capacity and surveillance (http://emergency.cdc.gov/bioterrorism/). Successful treatment and management of patients after exposure to biological threat agents depends on accurate and timely diagnosis, but many biothreat agents present with similar, vague clinical signs – commonly referred to as ‘flu-like illness’. Diagnosis of brucellosis is notoriously challenging, especially early in infection, and definitive diagnosis may require invasive methods, e.g. bone marrow biopsy. We studied the pathogenesis of Brucella suis aerosol infection in rhesus macaques in an effort to guide the diagnostic algorithm in case of possible intentional exposure of humans. Rhesus proved to be an excellent model for human brucellosis; the data showed that PCR DNA amplification testing of non-invasive diagnostic samples has the potential to definitively detect a point-source outbreak immediately and for several days after exposure.
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Affiliation(s)
- Samuel L Yingst
- US Army Medical Research Institute of Infectious Diseases, 1425 Porter Street, Fort Detrick, MD 21702, USA
| | - Louis M Huzella
- US Army Medical Research Institute of Infectious Diseases, 1425 Porter Street, Fort Detrick, MD 21702, USA
| | - Lara Chuvala
- Akimeka Technologies LLC, 1425 Porter Street, Fort Detrick, MD 21702, USA.,US Army Medical Research Institute of Infectious Diseases, 1425 Porter Street, Fort Detrick, MD 21702, USA
| | - Mark Wolcott
- US Army Medical Research Institute of Infectious Diseases, 1425 Porter Street, Fort Detrick, MD 21702, USA
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Tiller RV, Gee JE, Lonsway DR, Gribble S, Bell SC, Jennison AV, Bates J, Coulter C, Hoffmaster AR, De BK. Identification of an unusual Brucella strain (BO2) from a lung biopsy in a 52 year-old patient with chronic destructive pneumonia. BMC Microbiol 2010; 10:23. [PMID: 20105296 PMCID: PMC2825194 DOI: 10.1186/1471-2180-10-23] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2009] [Accepted: 01/27/2010] [Indexed: 02/03/2023] Open
Abstract
Background Brucellosis is primarily a zoonotic disease caused by Brucella species. There are currently ten Brucella spp. including the recently identified novel B. inopinata sp. isolated from a wound associated with a breast implant infection. In this study we report on the identification of an unusual Brucella-like strain (BO2) isolated from a lung biopsy in a 52-year-old patient in Australia with a clinical history of chronic destructive pneumonia. Results Standard biochemical profiles confirmed that the unusual strain was a member of the Brucella genus and the full-length 16S rRNA gene sequence was 100% identical to the recently identified B. inopinata sp. nov. (type strain BO1T). Additional sequence analysis of the recA, omp2a and 2b genes; and multiple locus sequence analysis (MLSA) demonstrated that strain BO2 exhibited significant similarity to the B. inopinata sp. compared to any of the other Brucella or Ochrobactrum species. Genotyping based on multiple-locus variable-number tandem repeat analysis (MLVA) established that the BO2 and BO1Tstrains form a distinct phylogenetic cluster separate from the other Brucella spp. Conclusion Based on these molecular and microbiological characterizations, we propose that the BO2 strain is a novel lineage of the newly described B. inopinata species.
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Affiliation(s)
- Rebekah V Tiller
- Division of Foodborne, Bacterial, and Mycotic Diseases and Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, 1600 Clifton Road, Atlanta, GA 30333, USA.
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Yoo SJ, Choi YS, Lim HS, Lee K, Park MY, Chu C, Kang YA. [Seroprevalence and risk factors of brucellosis among slaughterhouse workers in Korea]. J Prev Med Public Health 2009; 42:237-42. [PMID: 19675400 DOI: 10.3961/jpmph.2009.42.4.237] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
OBJECTIVES The incidence of zoonoses in Korea has increased recently. However, the study of high risk groups for zoonoses has not been conducted to date in Korea. Thus, we did this study to obtain data on brucellosis among slaughterhouse workers in Korea. METHODS We evaluated the structure of slaughterhouses and the process of slaughtering by reviewing the relevant literature and doing field studies. We visited 73 slaughterhouses and 62 residual products handle houses across the country. In addition, we conducted a questionnaire survey of the work activities, and obtained blood samples in order to determine the seroprevalence and risk factors of brucellosis. The titers of brucellosis antibodies were measured using the standard tube agglutination test (SAT). We diagnosed subjects as seropositive for Brucellosis if the titers were more than 1:160. The data collected was evaluated using SPSS ver. 17.0. RESULTS We included 1,503 subjects and obtained 1,482 blood samples among them: 849 workers involved in slaughtering, 351 handlers of residual products, 190 inspectors and their assistants, and 92 grading testers and their assistants. The seroprevalence of brucellosis among the slaughterhouse workers was 0.8% (95% CI=0.4-1.5). Broken down, the seroprevalence of brucellosis among the workers involved in slaughtering was 0.7% (95% CI=0.3-1.6), the handlers of residual products was 1.7% (95% CI=0.7-3.9) respectively. Risk factors for contracting brucellosis among slaughterhouse workers were being splashed with cattle blood around the mouth, cattle secretions around the body and not putting on protective apron while at work. CONCLUSIONS An educational program is needed for high risk groups on zoonoses about the prevention of infection. Thus, effective working guidelines for workers who participate in the slaughter of animals must be developed in order to protect them from zoonoses.
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Affiliation(s)
- Seok-Ju Yoo
- Department of Preventive Medicine, Dongguk University College of Medicine, Korea
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Abstract
Spontaneous fractures occur in seemingly normal bone with no apparent blunt-force trauma. Spontaneous fracture occurs primarily in two distinct groups of patients: the very active young and the elderly. Researchers and clinicians have used several terms interchangeably for spontaneous fracture, including pathologic fracture, fragility fracture, compression fracture, or fatigue or insufficiency fracture. Among the most common causes of spontaneous fracture are osteoporosis (calcium deficiency and corticosteroid-induced), malignancy, overexposure to vitamin A, periprosthetic weakening, Brucellosis, cerebral palsy (especially in children), and osteodystrophy because of chronic renal failure. Preliminary research observations indicate that spontaneous fracture may be a rare adverse outcome associated with bisphosphonates.
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Affiliation(s)
- Jeannette Y Wick
- National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
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