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Hider J, Duggan AT, Klunk J, Eaton K, Long GS, Karpinski E, Giuffra V, Ventura L, Fornaciari A, Fornaciari G, Golding GB, Prowse TL, Poinar HN. Examining pathogen DNA recovery across the remains of a 14th century Italian friar (Blessed Sante) infected with Brucella melitensis. INTERNATIONAL JOURNAL OF PALEOPATHOLOGY 2022; 39:20-34. [PMID: 36174312 DOI: 10.1016/j.ijpp.2022.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 08/05/2022] [Accepted: 08/13/2022] [Indexed: 06/16/2023]
Abstract
OBJECTIVE To investigate variation in ancient DNA recovery of Brucella melitensis, the causative agent of brucellosis, from multiple tissues belonging to one individual MATERIALS: 14 samples were analyzed from the mummified remains of the Blessed Sante, a 14 th century Franciscan friar from central Italy, with macroscopic diagnosis of probable brucellosis. METHODS Shotgun sequencing data from was examined to determine the presence of Brucella DNA. RESULTS Three of the 14 samples contained authentic ancient DNA, identified as belonging to B. melitensis. A genome (23.81X depth coverage, 0.98 breadth coverage) was recovered from a kidney stone. Nine of the samples contained reads classified as B. melitensis (7-169), but for many the data quality was insufficient to withstand our identification and authentication criteria. CONCLUSIONS We identified significant variation in the preservation and abundance of B. melitensis DNA present across multiple tissues, with calcified nodules yielding the highest number of authenticated reads. This shows how greatly sample selection can impact pathogen identification. SIGNIFICANCE Our results demonstrate variation in the preservation and recovery of pathogen DNA across tissues. This study highlights the importance of sample selection in the reconstruction of infectious disease burden and highlights the importance of a holistic approach to identifying disease. LIMITATIONS Study focuses on pathogen recovery in a single individual. SUGGESTIONS FOR FURTHER RESEARCH Further analysis of how sampling impacts aDNA recovery will improve pathogen aDNA recovery and advance our understanding of disease in past peoples.
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Affiliation(s)
- Jessica Hider
- McMaster Ancient DNA Centre, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Department of Anthropology, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada.
| | - Ana T Duggan
- McMaster Ancient DNA Centre, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Department of Anthropology, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Jennifer Klunk
- McMaster Ancient DNA Centre, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Department of Biology, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Daicel Arbor Biosciences, 5840 Interface Drive, Suite 101, Ann Arbor, MI 48103, USA
| | - Katherine Eaton
- McMaster Ancient DNA Centre, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Department of Anthropology, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - George S Long
- Department of Biology, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Emil Karpinski
- McMaster Ancient DNA Centre, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Department of Biology, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Valentina Giuffra
- Division of Paleopathology, Department of Translational Research on New Technologies in Medicine and Surgery, Medical School, via Roma 57, 56126 Pisa, PI, Italy
| | - Luca Ventura
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Italy; Division of Pathology, San Salvatore Hospital, University of L'Aquila, Coppito, 67100 L'Aquila, AQ, Italy
| | - Antonio Fornaciari
- Division of Paleopathology, Department of Translational Research on New Technologies in Medicine and Surgery, Medical School, via Roma 57, 56126 Pisa, PI, Italy
| | - Gino Fornaciari
- Maria Luisa di Borbone Academy, Villa Borbone, viale dei Tigli 32, 55049 Viareggio, LU, Italy
| | - G Brian Golding
- Department of Biology, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Tracy L Prowse
- Department of Anthropology, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Hendrik N Poinar
- McMaster Ancient DNA Centre, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Department of Anthropology, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Department of Biochemistry, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L9, Canada
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Abstract
Brucellosis is a common Zoonosis affecting half a million people annually. The most common mode of infection is by consuming unpasteurized milk or milk products. The general manifestations are those of fever with generalized symptoms. The nervous system is affected in 4-7% of cases. The manifestations are protean and include meningo-encephalitis as well as peripheral nervous system involvement. The diagnosis relies on culture, which is cumbersome and can be falsely negative. Agglutination tests for the various species of the organism are the mainstay for diagnosis. Treatment is for 3-6 months with combination therapy including Doxycycline, Rifampicin and ceftriaxone. The main issue is prevention and better animal husbandry.
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Affiliation(s)
- Raad Shakir
- Division of Brain Sciences, Imperial College, London, UK.
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The NOD- scid IL2rγnull Mouse Model Is Suitable for the Study of Osteoarticular Brucellosis and Vaccine Safety. Infect Immun 2019; 87:IAI.00901-18. [PMID: 30936160 DOI: 10.1128/iai.00901-18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 03/27/2019] [Indexed: 01/20/2023] Open
Abstract
Osteoarticular brucellosis is the most common complication in Brucella-infected humans regardless of age, sex, or immune status. The mechanism of bone destruction caused by Brucella species remained partially unknown due to the lack of a suitable animal model. Here, to study this complication, we explored the suitability of the use of the NOD-scid IL2rγnull mouse to study osteoarticular brucellosis and examined the potential use of this strain to evaluate the safety of live attenuated vaccine candidates. Mice were inoculated intraperitoneally with a single dose of 1 × 104, 1 × 105, or 1 × 106 CFU of B. abortus S19 or the vaccine candidate B. abortus S19ΔvjbR and monitored for the development of side effects, including osteoarticular disease, for 13 weeks. Decreased body temperature, weight loss, splenomegaly, and deformation of the tails were observed in mice inoculated with B. abortus S19 but not in those inoculated with S19ΔvjbR Histologically, all S19-inoculated mice had a severe dose-dependent inflammatory response in multiple organs. The inflammatory response at the tail was characterized by the recruitment of large numbers of neutrophils, macrophages, and osteoclasts with marked bone destruction. These lesions histologically resembled what is typically observed in Brucella-infected patients. In contrast, mice inoculated with B. abortus S19ΔvjbR did not show significant bone changes. Immunofluorescence, in situ hybridization, and confocal imaging demonstrated the presence of Brucella at the sites of inflammation, both intra- and extracellularly, and large numbers of bacteria were observed within mature osteoclasts. These results demonstrate the potential use of the NOD-scid IL2rγnull mouse model to evaluate vaccine safety and further study osteoarticular brucellosis.
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Adetunji SA, Ramirez G, Foster MJ, Arenas-Gamboa AM. A systematic review and meta-analysis of the prevalence of osteoarticular brucellosis. PLoS Negl Trop Dis 2019; 13:e0007112. [PMID: 30657765 PMCID: PMC6355028 DOI: 10.1371/journal.pntd.0007112] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 01/31/2019] [Accepted: 12/26/2018] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Infection of bones and joints remains one of the most commonly described complications of brucellosis in humans and is predominantly reported in all ages and sexes in high-risk regions, such as the Middle East, Asia, South and Central America, and Africa. We aimed to systematically review the literature and perform a meta-analysis to estimate the global prevalence of osteoarticular brucellosis (OAB). METHODOLOGY Major bibliographic databases were searched using keywords and suitable combinations. All studies reporting the incidence and clinical manifestations of osteoarticular brucellosis in humans, and demonstrated by two or more diagnostic methods (bacteriological, molecular, serological, and/or radiographic) were included. Random model was used, and statistical significance was set at 0.05. PRINCIPAL FINDINGS A total of 56 studies met the inclusion criteria and were included in the systematic review and meta-analysis. There was an evidence of geographical variation in the prevalence of osteoarticular disease with estimates ranging from 27% in low-risk regions to 36% in high-risk regions. However, the difference was not significant. Thus, brucellosis patients have at least a 27% chance of developing osteoarticular disease. CONCLUSIONS The prevalence of OAB is not dependent on the endemicity of brucellosis in a particular region. Hence, further research should investigate the potential mechanisms of OAB, as well as the influence of age, gender, and other socioeconomic factor variations in its global prevalence, as this may provide insight into associated exposure risks and management of the disease.
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Affiliation(s)
- Shakirat A. Adetunji
- Department of Veterinary Pathobiology, Texas A&M University, College Station, Texas, United States of America
| | - Gilbert Ramirez
- School of Public Health, Texas A&M University, College Station, Texas, United States of America
| | - Margaret J. Foster
- Medical Sciences Library, Texas A&M University, College Station, Texas, United States of America
| | - Angela M. Arenas-Gamboa
- Department of Veterinary Pathobiology, Texas A&M University, College Station, Texas, United States of America
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Pesce Viglietti AI, Gentilini MV, Arriola Benitez PC, Giambartolomei GH, Delpino MV. B. Abortus Modulates Osteoblast Function Through the Induction of Autophagy. Front Cell Infect Microbiol 2018; 8:425. [PMID: 30564561 PMCID: PMC6288398 DOI: 10.3389/fcimb.2018.00425] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 11/23/2018] [Indexed: 01/18/2023] Open
Abstract
Osteoarticular brucellosis is the most common localization of human active disease. Osteoblasts are specialized mesenchymal-derived cells involved in bone formation and are considered as professional mineralizing cells. Autophagy has been involved in osteoblast metabolism. The present study demonstrates that Brucella abortus infection induces the activation of the autophagic pathway in osteoblast cells. Autophagy was revealed by upregulation of LC3II/LC3I ratio and Beclin-1 expression as well as inhibition of p62 expression in infected cells. Induction of autophagy was also corroborated by using the pharmacological inhibitors wortmannin, a PI 3-kinase inhibitor, and leupeptin plus E64 (inhibitors of lysosomal proteases). Autophagy induction create a microenvironment that modifies osteoblast metabolism by the inhibition of the deposition of organic and mineral matrix, the induction of matrix metalloproteinase (MMP)-2, osteopontin, and RANKL secretion leading to bone loss. Accordingly, autophagy is also involved in the down-modulation of the master transcription factor in bone formation osterix during B. abortus infection. Taking together our results indicate that B. abortus induces the activation of autophagy pathway in osteoblast cells and this activation is involved in the modulation of osteoblast function and bone formation.
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Affiliation(s)
- Ayelén Ivana Pesce Viglietti
- Instituto de Inmunología, Genética y Metabolismo (INIGEM), Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - Maria Virginia Gentilini
- Instituto de Inmunología, Genética y Metabolismo (INIGEM), Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - Paula Constanza Arriola Benitez
- Instituto de Inmunología, Genética y Metabolismo (INIGEM), Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - Guillermo Hernán Giambartolomei
- Instituto de Inmunología, Genética y Metabolismo (INIGEM), Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - María Victoria Delpino
- Instituto de Inmunología, Genética y Metabolismo (INIGEM), Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
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Zhao ZJ, Li Q, Ma L, Li JQ, Xu LQ. The early diagnostic value of serum neopterin and cartilage oligomeric matrix protein for osteoarticular changes among brucellosis patients at an early period. J Orthop Surg Res 2018; 13:222. [PMID: 30180854 PMCID: PMC6123995 DOI: 10.1186/s13018-018-0932-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Accepted: 08/24/2018] [Indexed: 01/09/2023] Open
Abstract
Background Brucellosis is an important public health problem in China. Brucellosis can cause many osteoarticular changes, especially chronic brucellosis. Brucellosis presents various diagnostic difficulties because it mimics many other diseases. Because of the poor sensitivity and ability of X-ray image, it is necessary to find a good method of early diagnosis for osteoarticular changes among brucellosis patients at an early period. The aim of this study was to find early changes biomarkers for osteoarticular changes among brucellosis patients at an early period and provide a better understanding of the osteoarticular changes in this disease at an early stage. Methods Sixty-one cases of brucellosis patients at an early period (within 6 months) and 67 cases of volunteers were selected and divided into brucellosis vs. control groups. Serum samples were detected with serological tests for brucellosis, including rose bengal plate test (RBPT), agglutination test (SAT), and IgG and IgM with ELISA. Meanwhile, cartilage oligomeric matrix protein (COMP) and neopterin (NPT) levels in all samples were measured simultaneously with ELISA. The data were analyzed using SPSS 17.0 software. Results Together with the clinical examination, epidemiological investigation, and serological tests of RBPT, SAT, and IgG and IgM with ELISA, the patients from brucellosis group all were diagnosed as brucellosis cases at an early period, while the results of RBPT, SAT, and IgG and IgM with ELISA from the healthy control group were negative. Comparing with the healthy control, the medians of serum NPT and COMP in the patients group were 9.26 ng/l, 1.70 ng, respectively, which were higher than that of the healthy control group with significant differences (Z = 5.512, 3.614, all p = 0.000). Conclusion The serum NPT and COMP levels of brucellosis patients at an early period were increased. The serum NPT and COMP levels might be the indicator biomarker for osteoarticular changes of human brucellosis at an early stage.
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Affiliation(s)
- Zhi-Jun Zhao
- Qinghai Institute for Endemic Disease Prevention and Control, Xining, 811602, Qinghai, China
| | - Qiang Li
- Qinghai Institute for Endemic Disease Prevention and Control, Xining, 811602, Qinghai, China
| | - Li Ma
- Qinghai Institute for Endemic Disease Prevention and Control, Xining, 811602, Qinghai, China
| | - Ji-Quan Li
- Qinghai Institute for Endemic Disease Prevention and Control, Xining, 811602, Qinghai, China
| | - Li-Qing Xu
- Qinghai Institute for Endemic Disease Prevention and Control, Xining, 811602, Qinghai, China.
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Gentilini MV, Pesce Viglietti AI, Arriola Benitez PC, Iglesias Molli AE, Cerrone GE, Giambartolomei GH, Delpino MV. Inhibition of Osteoblast Function by Brucella abortus is Reversed by Dehydroepiandrosterone and Involves ERK1/2 and Estrogen Receptor. Front Immunol 2018; 9:88. [PMID: 29434601 PMCID: PMC5790783 DOI: 10.3389/fimmu.2018.00088] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 01/11/2018] [Indexed: 01/18/2023] Open
Abstract
Brucella abortus induces an inflammatory response that stimulates the endocrine system resulting in the secretion of cortisol and dehydroepiandrosterone (DHEA). Osteoarticular brucellosis is the most common presentation of the active disease in humans, and we have previously demonstrated that B. abortus infection inhibits osteoblast function. We aimed to evaluate the role of cortisol and DHEA on osteoblast during B. abortus infection. B. abortus infection induces apoptosis and inhibits osteoblast function. DHEA treatment reversed the effect of B. abortus infection on osteoblast by increasing their proliferation, inhibiting osteoblast apoptosis, and reversing the inhibitory effect of B. abortus on osteoblast differentiation and function. By contrast, cortisol increased the effect of B. abortus infection. Cortisol regulates target genes by binding to the glucocorticoid receptor (GR). B. abortus infection inhibited GRα expression. Cell responses to cortisol not only depend on GR expression but also on its intracellular bioavailability, that is, dependent on the activity of the isoenzymes 11β-hydroxysteroid dehydrogenase (HSD) type-1, 11β-HSD2 (which convert cortisone to cortisol and vice versa, respectively). Alterations in the expression of these isoenzymes in bone cells are associated with bone loss. B. abortus infection increased 11β-HSD1 expression but had no effect on 11β-HSD2. DHEA reversed the inhibitory effect induced by B. abortus infection on osteoblast matrix deposition in an estrogen receptor- and ERK1/2-dependent manner. We conclude that DHEA intervention improves osteoblast function during B. abortus infection making it a potential candidate to ameliorate the osteoarticular symptoms of brucellosis.
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Affiliation(s)
- María Virginia Gentilini
- Instituto de Inmunología, Genética y Metabolismo (INIGEM), CONICET, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Ayelén Ivana Pesce Viglietti
- Instituto de Inmunología, Genética y Metabolismo (INIGEM), CONICET, Universidad de Buenos Aires, Buenos Aires, Argentina
| | | | - Andrea Elena Iglesias Molli
- Instituto de Inmunología, Genética y Metabolismo (INIGEM), CONICET, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Gloria Edith Cerrone
- Instituto de Inmunología, Genética y Metabolismo (INIGEM), CONICET, Universidad de Buenos Aires, Buenos Aires, Argentina
| | | | - María Victoria Delpino
- Instituto de Inmunología, Genética y Metabolismo (INIGEM), CONICET, Universidad de Buenos Aires, Buenos Aires, Argentina
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Giambartolomei GH, Arriola Benitez PC, Delpino MV. Brucella and Osteoarticular Cell Activation: Partners in Crime. Front Microbiol 2017; 8:256. [PMID: 28265268 PMCID: PMC5316522 DOI: 10.3389/fmicb.2017.00256] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 02/07/2017] [Indexed: 01/18/2023] Open
Abstract
Osteoarticular brucellosis is the most common presentation of human active disease although its prevalence varies widely. The three most common forms of osteoarticular involvement are sacroiliitis, spondylitis, and peripheral arthritis. The molecular mechanisms implicated in bone damage have been recently elucidated. B. abortus induces bone damage through diverse mechanisms in which TNF-α and the receptor activator of nuclear factor kappa-B ligand (RANKL)-the natural modulator of bone homeostasis are involved. These processes are driven by inflammatory cells, like monocytes/macrophages, neutrophils, Th17 CD4+ T, and B cells. In addition, Brucella abortus has a direct effect on osteoarticular cells and tilts homeostatic bone remodeling. These bacteria inhibit bone matrix deposition by osteoblasts (the only bone cells involved in bone deposition), and modify the phenotype of these cells to produce matrix metalloproteinases (MMPs) and cytokine secretion, contributing to bone matrix degradation. B. abortus also affects osteoclasts (cells naturally involved in bone resorption) by inducing an increase in osteoclastogenesis and osteoclast activation; thus, increasing mineral and organic bone matrix resorption, contributing to bone damage. Given that the pathology induced by Brucella species involved joint tissue, experiments conducted on synoviocytes revealed that besides inducing the activation of these cells to secrete chemokines, proinflammatory cytokines and MMPS, the infection also inhibits synoviocyte apoptosis. Brucella is an intracellular bacterium that replicates preferentially in the endoplasmic reticulum of macrophages. The analysis of B. abortus-infected synoviocytes indicated that bacteria also replicate in their reticulum suggesting that they could use this cell type for intracellular replication during the osteoarticular localization of the disease. Finally, the molecular mechanisms of osteoarticular brucellosis discovered recently shed light on how the interaction between B. abortus and immune and osteoarticular cells may play an important role in producing damage in joint and bone.
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Affiliation(s)
- Guillermo H Giambartolomei
- Instituto de Inmunología, Genética y Metabolismo - Consejo Nacional de Investigaciones Cientificas y Tecnicas - Universidad de Buenos Aires Buenos Aires, Argentina
| | - Paula C Arriola Benitez
- Instituto de Inmunología, Genética y Metabolismo - Consejo Nacional de Investigaciones Cientificas y Tecnicas - Universidad de Buenos Aires Buenos Aires, Argentina
| | - M Victoria Delpino
- Instituto de Inmunología, Genética y Metabolismo - Consejo Nacional de Investigaciones Cientificas y Tecnicas - Universidad de Buenos Aires Buenos Aires, Argentina
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Brucella abortus Invasion of Osteocytes Modulates Connexin 43 and Integrin Expression and Induces Osteoclastogenesis via Receptor Activator of NF-κB Ligand and Tumor Necrosis Factor Alpha Secretion. Infect Immun 2015; 84:11-20. [PMID: 26459511 DOI: 10.1128/iai.01049-15] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 10/03/2015] [Indexed: 01/18/2023] Open
Abstract
Osteoarticular brucellosis is the most common localization of human active disease. Osteocytes are the most abundant cells of bone. They secrete factors that regulate the differentiation of both osteoblasts and osteoclasts during bone remodeling. The aim of this study is to determine if Brucella abortus infection modifies osteocyte function. Our results indicate that B. abortus infection induced matrix metalloproteinase 2 (MMP-2), receptor activator for NF-κB ligand (RANKL), proinflammatory cytokines, and keratinocyte chemoattractant (KC) secretion by osteocytes. In addition, supernatants from B. abortus-infected osteocytes induced bone marrow-derived monocytes (BMM) to undergo osteoclastogenesis. Using neutralizing antibodies against tumor necrosis factor alpha (TNF-α) or osteoprotegerin (OPG), RANKL's decoy receptor, we determined that TNF-α and RANKL are involved in osteoclastogenesis induced by supernatants from B. abortus-infected osteocytes. Connexin 43 (Cx43) and the integrins E11/gp38, integrin-α, integrin-β, and CD44 are involved in cell-cell interactions necessary for osteocyte survival. B. abortus infection inhibited the expression of Cx43 but did not modify the expression of integrins. Yet the expression of both Cx43 and integrins was inhibited by supernatants from B. abortus-infected macrophages. B. abortus infection was not capable of inducing osteocyte apoptosis. However, supernatants from B. abortus-infected macrophages induced osteocyte apoptosis in a dose-dependent manner. Taken together, our results indicate that B. abortus infection could alter osteocyte function, contributing to bone damage.
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Koubaa M, Maaloul I, Marrakchi C, Lahiani D, Hammami B, Mnif Z, Ben Mahfoudh K, Hammami A, Ben Jemaa M. Spinal brucellosis in South of Tunisia: review of 32 cases. Spine J 2014; 14:1538-44. [PMID: 24331843 DOI: 10.1016/j.spinee.2013.09.027] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/01/2013] [Revised: 08/31/2013] [Accepted: 09/19/2013] [Indexed: 02/03/2023]
Abstract
BACKGROUND CONTEXT Brucellosis remains an important economic and public health problem in some parts of the world. The spine is the most common site of musculoskeletal involvement of brucellosis. PURPOSE Assess the clinical, laboratory, radiological findings, and outcomes of vertebral involvement in brucellosis. STUDY DESIGN A retrospective study. PATIENT SAMPLE Thirty-two patients with spinal brucellosis during a period of 21 years (1990-2010) were included. OUTCOME MEASURES Clinical and radiological improvement. METHODS Diagnosis made on clinical presentation, laboratory findings, radiographic evidence, and the Brucellar etiology was considered when seroagglutination tests were positive at a titer of 1/160 or higher, and/or Brucella spp were isolated in the blood or sample cultures. RESULTS The mean age of patients was 51±15.85 years (23 males, 9 females; age range, 19-74 years). The median diagnostic delay was 3 months. Back or neck pain (100% of patients), fever (78%), and sweats (68.6%) were the most common symptoms. Cultures of blood specimens from five patients (15.6%) were positive for Brucella melitensis. Four patients (12.5%) had motor weakness or paralysis. Magnetic resonance imaging was performed in 24 (75%) cases. Paravertebral masses, epidural masses, and psoas abscesses were detected in 65.6%, 59.4%, and 28.1% of patients, respectively. The lumbar vertebra was the most frequently involved region with the rate of 68.7%, followed by thoracal (18.7%), cervical (6.3%), lumbosacral (6.3%), and thoracolumbar (3.1%) segments. The duration of antimicrobial therapy of brucellosis (median, 6 months; range, 3-13 months) varied according to clinical response and the presence of epidural and paravertebral masses. There were no deaths or severe sequelae in this study. CONCLUSIONS Brucellar spondylitis should be considered in patients with back pain and fever in endemic areas. A high index of suspicion and clinical, laboratory, and radiological examinations help to confirm the diagnosis of vertebral involvement.
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Affiliation(s)
- Makram Koubaa
- Department of Infectious Diseases, Hedi Chaker University Hospital, Sfax 3029, Tunisia.
| | - Imed Maaloul
- Department of Infectious Diseases, Hedi Chaker University Hospital, Sfax 3029, Tunisia
| | - Chakib Marrakchi
- Department of Infectious Diseases, Hedi Chaker University Hospital, Sfax 3029, Tunisia
| | - Dorra Lahiani
- Department of Infectious Diseases, Hedi Chaker University Hospital, Sfax 3029, Tunisia
| | - Boussaima Hammami
- Department of Infectious Diseases, Hedi Chaker University Hospital, Sfax 3029, Tunisia
| | - Zeinab Mnif
- Department of Radiology, Hedi Chaker and Habib Bourguiba University Hospital, Sfax 3029, Tunisia
| | - Kaireddine Ben Mahfoudh
- Department of Radiology, Hedi Chaker and Habib Bourguiba University Hospital, Sfax 3029, Tunisia
| | - Adnane Hammami
- Department of Microbiology, Habib Bourguiba University Hospital, Sfax 3029, Tunisia
| | - Mounir Ben Jemaa
- Department of Infectious Diseases, Hedi Chaker University Hospital, Sfax 3029, Tunisia
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Serum annexin A2 levels in acute brucellosis and brucellar spondylodiscitis. Eur J Clin Microbiol Infect Dis 2014; 33:1855-9. [DOI: 10.1007/s10096-014-2155-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Accepted: 05/05/2014] [Indexed: 11/27/2022]
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Hasanoglu I, Guven T, Maras Y, Guner R, Tasyaran MA, Acikgoz ZC. Brucellosis as an aetiology of septic arthritis. Trop Doct 2013; 44:48-9. [PMID: 24231687 DOI: 10.1177/0049475513512645] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Brucellosis is a zoonotic disease caused by a Gram-negative coccobacillus from the Brucella genus. The disease has a broad spectrum of clinical manifestations. The musculoskeletal system involvement is frequent and, rarely, arthritis can be the only clinical feature of the disease. We report a case of monoarthritis caused by Brucella melitensis.
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Affiliation(s)
- Imran Hasanoglu
- Medical Doctor, Ankara Ataturk Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Turkey
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Brucella abortus invasion of synoviocytes inhibits apoptosis and induces bone resorption through RANKL expression. Infect Immun 2013; 81:1940-51. [PMID: 23509146 DOI: 10.1128/iai.01366-12] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Arthritis is one of the most common complications of human active brucellosis, but its pathogenic mechanisms have not been completely elucidated. In this paper, we describe the role of synoviocytes in the pathogenesis of brucellar arthritis. Our results indicate that Brucella abortus infection inhibited synoviocyte apoptosis through the upregulation of antiapoptotic factors (cIAP-2, clusterin, livin, and P21/CIP/CDNK1A). In contrast, infection did not change the expression of proteins that have been involved in apoptosis induction such as Bad, Bax, cleaved procaspase 3, CytC, and TRAIL, among others; or their expression was reduced, as occurs in the case of P-p53(S15). In addition, B. abortus infection induced upregulation of adhesion molecules (CD54 and CD106), and the adhesion of monocytes and neutrophils to infected synoviocytes was significantly higher than to uninfected cells. Despite this increased adhesion, B. abortus-infected synoviocytes were able to inhibit apoptosis induced by supernatants from B. abortus-infected monocytes and neutrophils. Moreover, B. abortus infection increased soluble and membrane RANKL expression in synoviocytes that further induced monocytes to undergo osteoclastogenesis. The results presented here shed light on how the interactions of B. abortus with synovial fibroblasts may have an important role in the pathogenesis of brucellar arthritis.
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Giambartolomei GH, Scian R, Acosta-Rodríguez E, Fossati CA, Delpino MV. Brucella abortus-infected macrophages modulate T lymphocytes to promote osteoclastogenesis via IL-17. THE AMERICAN JOURNAL OF PATHOLOGY 2012; 181:887-96. [PMID: 22901753 DOI: 10.1016/j.ajpath.2012.05.029] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Revised: 05/03/2012] [Accepted: 05/21/2012] [Indexed: 01/18/2023]
Abstract
The pathogenic mechanisms of bone loss caused by Brucella species have not been completely deciphered. Although T lymphocytes (LTs) are considered important to control infection, the mechanism of Brucella-induced T-cell responses to immunopathological features is not known. We present in vitro and in vivo evidence showing that Brucella abortus-induced inflammatory response leads to the activation of LTs, which further promote osteoclastogenesis. Pre-activated murine LTs treated with culture supernatant from macrophages infected with B. abortus induced bone marrow-derived monocytes (BMMs) to undergo osteoclastogenesis. Furthermore, osteoclastogenesis was mediated by CD4(+) T cells. Although B. abortus-activated T cells actively secreted the pro-osteoclastogenic cytokines RANKL and IL-17, osteoclastogenesis depended on IL-17, because osteoclast generation induced by Brucella-activated T cells was completely abrogated when these cells were cultured with BMMs from IL-17 receptor knockout mice. Neutralization experiments indicated that IL-6, generated by Brucella infection, induced the production of pro-osteoclastogenic IL-17 from LTs. By using BMMs from tumor necrosis factor receptor p55 knockout mice, we also demonstrated that IL-17 indirectly induced osteoclastogenesis through the induction of tumor necrosis factor-α from osteoclast precursors. Finally, extensive and widespread osteoclastogenesis was observed in the knee joints of mice injected with Brucella-activated T cells. Our results indicate that activated T cells, elicited by B. abortus-infected macrophages and influenced by the inflammatory milieu, promote the generation of osteoclasts, leading to bone loss.
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Affiliation(s)
- Guillermo H Giambartolomei
- Institute for the Study of Humoral Immunity, Faculty of Pharmacy and Biochemistry, University of Buenos Aires, Argentina
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Abstract
Osteoarticular brucellosis is the most common presentation of the active disease in humans. Loss of bone is a serious complication of localized bacterial infection of bones or the adjacent tissue, and brucellosis proved not to be the exception. The skeleton is a dynamic organ system which is constantly remodeled. Osteoblasts are responsible for the deposition of bone matrix and are thought to facilitate the calcification and mineralization of the bone matrix, and their function could be altered under infectious conditions. In this article, we describe immune mechanisms whereby Brucella abortus may invade and replicate within osteoblasts, inducing apoptosis, inhibiting mineral and organic matrix deposition, and inducing upregulation of RANKL expression. Additionally, all of these mechanisms contributed in different ways to bone loss. These processes implicate the activation of signaling pathways (mitogen-activated protein kinases [MAPK] and caspases) involved in cytokine secretion, expression of activating molecules, and cell death of osteoblasts. In addition, considering the relevance of macrophages in intracellular Brucella survival and proinflammatory cytokine secretion in response to infection, we also investigated the role of these cells as modulators of osteoblast survival, differentiation, and function. We demonstrated that supernatants from B. abortus-infected macrophages may also mediate osteoblast apoptosis and inhibit osteoblast function in a process that is dependent on the presence of tumor necrosis factor alpha (TNF-α). These results indicate that B. abortus may directly and indirectly harm osteoblast function, contributing to the bone and joint destruction observed in patients with osteoarticular complications of brucellosis.
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Delpino MV, Barrionuevo P, Macedo GC, Oliveira SC, Genaro SD, Scian R, Miraglia MC, Fossati CA, Baldi PC, Giambartolomei GH. Macrophage-elicited osteoclastogenesis in response to Brucella abortus infection requires TLR2/MyD88-dependent TNF-α production. J Leukoc Biol 2011; 91:285-98. [PMID: 22075930 DOI: 10.1189/jlb.04111185] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Osteoarticular complications are common in human brucellosis, but the pathogenic mechanisms involved are largely unknown. In this manuscript, we described an immune mechanism for inflammatory bone loss in response to infection by Brucella abortus. We established a requirement for MyD88 and TLR2 in TNF-α-elicited osteoclastogenesis in response to B. abortus infection. CS from macrophages infected with B. abortus induced BMM to undergo osteoclastogenesis. Although B. abortus-infected macrophages actively secreted IL-1β, IL-6, and TNF-α, osteoclastogenesis depended on TNF-α, as CS from B. abortus-infected macrophages failed to induce osteoclastogenesis in BMM from TNFRp55⁻/⁻ mice. CS from B. abortus-stimulated MyD88⁻/⁻ and TLR2⁻/⁻ macrophages failed to express TNF-α, and these CS induced no osteoclast formation compared with that of the WT or TLR4⁻/⁻ macrophages. Omp19, a B. abortus lipoprotein model, recapitulated the cytokine production and subsequent osteoclastogenesis induced by the whole bacterium. All phenomena were corroborated using human monocytes, indicating that this mechanism could play a role in human osteoarticular brucellosis. Our results indicate that B. abortus, through its lipoproteins, may be involved in bone resorption through the pathological induction of osteoclastogenesis.
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Affiliation(s)
- M Victoria Delpino
- Instituto de Estudios de la Inmunidad Humoral (CONICET), Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina
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Potential role of fibroblast-like synoviocytes in joint damage induced by Brucella abortus infection through production and induction of matrix metalloproteinases. Infect Immun 2011; 79:3619-32. [PMID: 21730088 DOI: 10.1128/iai.05408-11] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Arthritis is one of the most common complications of human brucellosis, but its pathogenic mechanisms have not been elucidated. Fibroblast-like synoviocytes (FLS) are known to be central mediators of joint damage in inflammatory arthritides through the production of matrix metalloproteinases (MMPs) that degrade collagen and of cytokines and chemokines that mediate the recruitment and activation of leukocytes. In this study we show that Brucella abortus infects and replicates in human FLS (SW982 cell line) in vitro and that infection results in the production of MMP-2 and proinflammatory mediators (interleukin-6 [IL-6], IL-8, monocyte chemotactic protein 1 [MCP-1], and granulocyte-macrophage colony-stimulating factor [GM-CSF]). Culture supernatants from Brucella-infected FLS induced the migration of monocytes and neutrophils in vitro and also induced these cells to secrete MMP-9 in a GM-CSF- and IL-6-dependent fashion, respectively. Reciprocally, culture supernatants from Brucella-infected monocytes and neutrophils induced FLS to produce MMP-2 in a tumor necrosis factor alpha (TNF-α)-dependent fashion. The secretion of proinflammatory mediators and MMP-2 by FLS did not depend on bacterial viability, since it was also induced by heat-killed B. abortus (HKBA) and by a model Brucella lipoprotein (L-Omp19). These responses were mediated by the recognition of B. abortus antigens through Toll-like receptor 2. The intra-articular injection of HKBA or L-Omp19 into the knee joint of mice resulted in the local induction of the proinflammatory mediators MMP-2 and MMP-9 and in the generation of a mixed inflammatory infiltrate. These results suggest that FLS, and phagocytes recruited by them to the infection focus, may be involved in joint damage during brucellar arthritis through the production of MMPs and proinflammatory mediators.
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Turan H, Serefhanoglu K, Karadeli E, Togan T, Arslan H. Osteoarticular involvement among 202 brucellosis cases identified in Central Anatolia region of Turkey. Intern Med 2011; 50:421-8. [PMID: 21372451 DOI: 10.2169/internalmedicine.50.4700] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
OBJECTIVE The musculoskeletal system is one of the most commonly affected systems in brucellosis. The objective of this study was to determine the frequency, types, and clinical features of osteoarticular involvement among cases with brucellosis in the Central Anatolia region of Turkey and to establish the differences between patients with and without osteoarticular involvement. METHODS Included in this study were 202 patients with Brucellosis presented between June 2003 and June 2009. The diagnosis of osteoarticular system complications was established by physical examination and radiological findings obtained by diagnostic imaging tools. Magnetic resonance images of thoracic, lumbar or sacral vertebrae were acquired from patients with back pain, low back pain and sacro-iliac joint pain. RESULTS Osteoarticular involvement was noted in 94 patients (46.5%). The most common sources of infection are employment in farming and/or consumption of un-pasteurized milk or dairy products, especially fresh cheese in 53 (75.7%) cases. The mean age is 46.7±18 years. Sacroiliitis is the most frequent osteoarticular involvement (60.6%), 82.4% of which is bilateral. Sacroiliitis was followed by spondylodiscitis in 36 (38.3%), peripheral arthritis in 15 (16%), bursitis in 1(1.1%) case. Patients with osteoarticular involvement received medical treatment for at least three months. CONCLUSION The ratio and anatomical region of osteoarticular involvement in brucellosis show variability among countries. In this study, it is demonstrated that sacroiliitis is the most common form of osteoarticular involvement in the Central Anatolia region of Turkey. In endemic countries such as Turkey, this disease should be included in the differential diagnosis for patients with symptoms of sacroiliitis, spondylodiscitis or those with articular pain.
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Affiliation(s)
- Hale Turan
- Department of Infectious Diseases and Clinical Microbiology, Baskent University Faculty of Medicine, Turkey.
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Granulocyte-macrophage colony-stimulating factor- and tumor necrosis factor alpha-mediated matrix metalloproteinase production by human osteoblasts and monocytes after infection with Brucella abortus. Infect Immun 2010; 79:192-202. [PMID: 20956574 DOI: 10.1128/iai.00934-10] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Osteoarticular complications are common in human brucellosis, but the pathogenic mechanisms involved are largely unknown. Since matrix metalloproteinases (MMPs) are involved in joint and bone damage in inflammatory and infectious diseases, we investigated the production of MMPs by human osteoblasts and monocytes, either upon Brucella abortus infection or upon reciprocal stimulation with factors produced by each infected cell type. B. abortus infection of the normal human osteoblastic cell line hFOB 1.19 triggered a significant release of MMP-2, which was mediated in part by granulocyte-macrophage colony-stimulating factor (GM-CSF) acting on these same cells. Supernatants from infected osteoblasts exhibited increased levels of monocyte chemoattractant protein 1 and induced the migration of human monocytes (THP-1 cell line). Infection with B. abortus induced a high MMP-9 secretion in monocytes, which was also induced by heat-killed B. abortus and by the Omp19 lipoprotein from B. abortus. These effects were mediated by Toll-like receptor 2 and by the action of tumor necrosis factor alpha (TNF-α) produced by these same cells. Supernatants from B. abortus-infected monocytes induced MMP-2 secretion in uninfected osteoblasts, and this effect was mediated by TNF-α. Similarly, supernatants from infected osteoblasts induced MMP-9 secretion in uninfected monocytes. This effect was mediated by GM-CSF, which induced TNF-α production by monocytes, which in turn induced MMP-9 in these cells. These results suggest that MMPs could be potentially involved in the tissue damage observed in osteoarticular brucellosis.
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Sohn MH, Lim ST, Jeong YJ, Kim DW, Jeong HJ, Lee CS. Unusual Case of Occult Brucella Osteomyelitis in the Skull Detected by Bone Scintigraphy. Nucl Med Mol Imaging 2010; 44:161-3. [DOI: 10.1007/s13139-010-0023-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2010] [Revised: 02/17/2010] [Accepted: 02/17/2010] [Indexed: 10/19/2022] Open
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Abstract
We report 2 cases of sacroiliitis in a 13-year-old girl and an 11-year-old boy as the sole manifestation of Brucella melitensis infection. This is a rare condition. Throughout the course of the disease, neither the girl nor the boy had other signs of brucellosis. Sacroiliitis was documented by positive results of technetium 99m scintigraphy and magnetic resonance imaging. Isolation of B. melitensis from the blood and positive results of serologic methods established the diagnosis. Treatment consisted of bed rest and a combination of rifampin plus co-trimoxazole with gentamicin. Brucellar sacroiliitis is uncommon in children, and accurate diagnosis is frequently delayed because of nonspecific clinical presentation. In the appropriate clinical setting, we suggest that the index of suspicion for brucellar sacroiliitis be raised in an unusual joint, especially in endemic regions.
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Dayan L, Deyev S, Palma L, Rozen N. Long-standing, neglected sacroiliitis with remarked sacro-iliac degenerative changes as a result of Brucella spp. infection. Spine J 2009; 9:e1-4. [PMID: 18538638 DOI: 10.1016/j.spinee.2008.03.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2007] [Revised: 01/19/2008] [Accepted: 03/10/2008] [Indexed: 02/03/2023]
Abstract
BACKGROUND Osteoarticular disease is universally the most common complication of brucellosis. Sacro-iliac joint (SIJ) is the most frequent osteoarticular location of involvement. Sacroiliitis (SI) usually is associated with acute form of the disease, thus frank SIJ destruction caused by brucellosis is rare. PURPOSE To report the case of a patient suffering from severe, prolonged lumbar pain with sciatica, refractory to medical treatment, in which the correct and misdiagnosed cause of her pain was a long-standing, neglected brucellar SI. STUDY DESIGN Case report. METHODS Scintigraphy and imaging methods (computed tomography, magnetic resonance imaging). RESULTS The result of the delayed diagnosis was a pronounced degeneration of the SIJ. CONCLUSIONS Sacroiliitis as a result of infection with Brucella might cause severe joint degeneration if left untreated.
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Affiliation(s)
- Lior Dayan
- Orthopedic Surgery Department, Haemek Medical Center, Afula, Israel.
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Proinflammatory response of human osteoblastic cell lines and osteoblast-monocyte interaction upon infection with Brucella spp. Infect Immun 2008; 77:984-95. [PMID: 19103778 DOI: 10.1128/iai.01259-08] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
The ability of Brucella spp. to infect human osteoblasts and the cytokine response of these cells to infection were investigated in vitro. Brucella abortus, B. suis, B. melitensis, and B. canis were able to infect the SaOS-2 and MG-63 osteoblastic cell lines, and the first three species exhibited intracellular replication. B. abortus internalization was not significantly affected by pretreatment of cells with cytochalasin D but was inhibited up to 92% by colchicine. A virB10 mutant of B. abortus could infect but not replicate within osteoblasts, suggesting a role for the type IV secretion system in intracellular survival. Infected osteoblasts produced low levels of chemokines (interleukin-8 [IL-8] and macrophage chemoattractant protein 1 [MCP-1]) and did not produce proinflammatory cytokines (IL-1beta, IL-6, and tumor necrosis factor alpha [TNF-alpha]). However, osteoblasts stimulated with culture supernatants from Brucella-infected human monocytes (THP-1 cell line) produced chemokines at levels 12-fold (MCP-1) to 17-fold (IL-8) higher than those of infected osteoblasts and also produced IL-6. In the inverse experiment, culture supernatants from Brucella-infected osteoblasts induced the production of IL-8, IL-1beta, IL-6, and TNF-alpha by THP-1 cells. The induction of TNF-alpha and IL-1beta was largely due to granulocyte-macrophage colony-stimulating factor produced by infected osteoblasts, as demonstrated by inhibition with a specific neutralizing antibody. This study shows that Brucella can invade and replicate within human osteoblastic cell lines, which can directly and indirectly mount a proinflammatory response. Both phenomena may have a role in the chronic inflammation and bone and joint destruction observed in osteoarticular brucellosis.
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Abstract
Human brucellosis still presents scientists and clinicians with several challenges, such as the understanding of pathogenic mechanisms of Brucella spp, the identification of markers for disease severity, progression, and treatment response, and the development of improved treatment regimens. Molecular studies have shed new light on the pathogenesis of Brucella spp, and new technologies have permitted the development of diagnostic tools that will be useful in developing countries, where brucellosis is still a very common but often neglected disease. However, further studies are needed to establish optimum treatment regimens and local and international control programmes. This Review summarises current knowledge of the pathogenic mechanisms, new diagnostic advances, therapeutic options, and the situation of developing countries in regard to human brucellosis.
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Affiliation(s)
- María Pía Franco
- Department of Neurology, University of Minnesota, Minneapolis, MN, USA
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Hizel K, Guzel O, Dizbay M, Karakus R, Senol E, Arman D, Aktas F, Ulutan F. Age and duration of disease as factors affecting clinical findings and sacroiliitis in brucellosis. Infection 2007; 35:434-7. [PMID: 17906836 DOI: 10.1007/s15010-007-6361-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2006] [Accepted: 06/11/2007] [Indexed: 11/27/2022]
Abstract
OBJECTIVE Brucellosis may be seen in any age group, but it still involves young and middle aged adults more frequently. Our aim was to investigate the relationship between age and the duration of disease on clinical findings of brucellosis in adults in this study. PATIENTS AND METHOD One hundred and sixty-three patients with brucellosis, treated in our hospital, between 1997 and 2003, were evaluated retrospectively. RESULTS Fever was found in 60.7% of the patients, and it was significantly higher when the duration of disease was less than one month (p = 0.03). Fever was significantly lower in the > or = 65 age group (p = 0.01). Sacroiliitis was detected in 44.1% of patients. Sacroiliitis was significantly higher in the 15-35 age group (p = 0.03). There were no differences between age groups and other clinical and laboratory findings. CONCLUSIONS Sacroiliac involvement was noted particularly in young adults who manifested lumbar pain and fever, but this might not be a major symptom of brucellosis in the elderly, or in patients showing symptoms for more than a month.
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Affiliation(s)
- K Hizel
- Clinical Microbiology and Infectious Diseases, Gazi University School of Medicine, Besevler, 06510, Ankara, Turkey.
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Abstract
This article reviews the pathophysiology of spinal infection and its relevance for imaging. Magnetic resonance imaging (MRI) is the modality with by far the best sensitivity and specificity for spinal infection. The imaging appearances of spinal infection in MRI are outlined, and imaging techniques are discussed. The problems of clinical diagnosis are outlined. There is some emphasis on the MRI differentiation of pyogenic and nonpyogenic infection and on the differential diagnosis of spinal infection centered on the imaging presentation.
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Affiliation(s)
- Bernhard J Tins
- Department of Radiology, The Robert Jones & Agnes Hunt Orthopaedic Hospital, Oswestry, Shropshire, United Kingdom.
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Hashemi SH, Keramat F, Ranjbar M, Mamani M, Farzam A, Jamal-Omidi S. Osteoarticular complications of brucellosis in Hamedan, an endemic area in the west of Iran. Int J Infect Dis 2007; 11:496-500. [PMID: 17344084 DOI: 10.1016/j.ijid.2007.01.008] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2006] [Revised: 01/10/2007] [Accepted: 01/14/2007] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE To determine the frequency and clinical characteristics of osteoarticular complications of brucellosis in an endemic region in Iran. METHODS In a prospective study we evaluated 245 patients with brucellosis diagnosed between January 2004 and December 2005. Patients included were those older than 8 years of age and who had clinical features suggestive of brucellosis and specific antibodies at significant titers, and/or positive blood or body fluid culture for Brucella species. A bone scan was performed in those with a clinical suspicion of osteoarticular involvement. RESULTS Seventy patients (28.6%) had osteoarticular complications. Sacroiliitis was the most common complication (75.7%), followed by spondylitis (21.4%) and peripheral arthritis (8.6%). Spondylitis was the most common osteoarticular complication in the elderly. Relapses occurred in five (2%) patients, three of them with spondylitis. CONCLUSIONS Osteoarticular disease is the most common complication of brucellosis in Western Iran. Sacroiliitis is the most common form of osteoarticular complication. With the use of a proper treatment regimen, the prospect for recovery is good.
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Affiliation(s)
- Seyyed Hamid Hashemi
- Department of Infectious Diseases, Hamedan University of Medical Sciences, Sina Hospital, Mirzadeh-eshghi Street, Hamedan 65168, Iran.
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