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Li P, Qian Z, Tao Y. Application of metagenomic next-generation sequencing in the diagnosis of Bartonella neuroretinitis: a case report and literature review. J Ophthalmic Inflamm Infect 2024; 14:17. [PMID: 38637335 PMCID: PMC11026355 DOI: 10.1186/s12348-024-00387-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Accepted: 01/13/2024] [Indexed: 04/20/2024] Open
Abstract
BACKGROUND Cat-scratch disease (CSD) is caused by Bartonella henselae infection. In atypical cases of CSD, pathogen determination is challenging. We report a case of Bartonella neuroretinitis with neither a clear history of scratches nor typical general symptoms. The diagnosis was made using metagenomic next-generation sequencing (mNGS), a high-throughput sequencing technology. CASE PRESENTATION A female patient presented to the ophthalmologist with complaint of blurred vision in her right eye. Although with history of raising a cat, she reported no clear history of scratches or typical general symptoms, except a fever of unknown origin which resolved spontaneously. The best corrected visual acuity (BCVA) of the right eye was count fingers. Fundus examination showed optic disc oedema, macular exudates and inferior exudative retinal detachment. Laboratory examination results showed increased value of serum C-reactive protein and erythrocyte sedimentation rate. Ocular involvement of toxoplasmosis, syphilis and tuberculosis were excluded. To identify the possible causative pathogen of the disease, mNGS of aqueous humour sample was performed and 521 reads of B. henselae were identified. Serological test results further showed a positive immunoglobulin G (IgG) titre of 1:64. Taking the contact history, clinical manifestations, mNGS and serological results into consideration, the diagnosis of Bartonella neuroretinitis (ocular CSD) was made. After appropriate treatment, the BCVA of the right eye improved to 20/25 in the last follow-up. Fundus examination showed a normal optic disc and macula, and the exudates had reduced. CONCLUSION mNGS, a fast and unbiased method, can be used to detect B. henselae (if present) in intraocular fluid samples.; however, the results should be interpreted together with the clinical symptoms and other auxiliary test results.
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Affiliation(s)
- Pengcheng Li
- Department of Ophthalmology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei, China.
| | - Zhuyun Qian
- Beijing GIANTMED Medical Diagnostics Lab, Beijing, China
- Department of Ophthalmology, Beijing Chaoyang Hospital, Capital Medical University, No. 8, South Road of Worker's Stadium Chaoyang District, Beijing, 100020, China
| | - Yong Tao
- Department of Ophthalmology, Beijing Chaoyang Hospital, Capital Medical University, No. 8, South Road of Worker's Stadium Chaoyang District, Beijing, 100020, China.
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Eichenberger EM, Degner N, Scott ER, Ruffin F, Franzone J, Sharma-Kuinkel B, Shah P, Hong D, Dalai SC, Blair L, Hollemon D, Chang E, Ho C, Wanda L, de Vries CR, Fowler VG, Ahmed AA. Microbial Cell-Free DNA Identifies the Causative Pathogen in Infective Endocarditis and Remains Detectable Longer Than Conventional Blood Culture in Patients with Prior Antibiotic Therapy. Clin Infect Dis 2023; 76:e1492-e1500. [PMID: 35684984 PMCID: PMC10169441 DOI: 10.1093/cid/ciac426] [Citation(s) in RCA: 25] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 05/16/2022] [Accepted: 05/24/2022] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND The diagnosis of infective endocarditis (IE) can be difficult, particularly if blood cultures fail to yield a pathogen. This study evaluates the potential utility of microbial cell-free DNA (mcfDNA) as a tool to identify the microbial etiology of IE. METHODS Blood samples from patients with suspected IE were serially collected. mcfDNA was extracted from plasma and underwent next-generation sequencing. Reads were aligned against a library containing DNA sequences belonging to >1400 different pathogens. mcfDNA from organisms present above a statistical threshold were reported and quantified in molecules per milliliter (MPM). Additional mcfDNA was collected on each subject every 2-3 days for a total of 7 collections or until discharge. RESULTS Of 30 enrolled patients with suspected IE, 23 had definite IE, 2 had possible IE, and IE was rejected in 5 patients by modified Duke Criteria. Only the 23 patients with definite IE were included for analysis. Both mcfDNA and blood cultures achieved a sensitivity of 87%. The median duration of positivity from antibiotic treatment initiation was estimated to be approximately 38.1 days for mcfDNA versus 3.7 days for blood culture (proportional odds, 2.952; P = .02771), using a semiparametric survival analysis. mcfDNA (log10) levels significantly declined (-0.3 MPM log10 units, 95% credible interval -0.45 to -0.14) after surgical source control was performed (pre- vs postprocedure, posterior probability >0.99). CONCLUSION mcfDNA accurately identifies the microbial etiology of IE. Sequential mcfDNA levels may ultimately help to individualize therapy by estimating a patient's burden of infection and response to treatment.
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Affiliation(s)
- Emily M Eichenberger
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA
| | | | | | - Felicia Ruffin
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA
| | - John Franzone
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA
| | - Batu Sharma-Kuinkel
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA
| | - Pratik Shah
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA
| | - David Hong
- Karius, Inc., Redwood City, California, USA
| | | | - Lily Blair
- Karius, Inc., Redwood City, California, USA
| | | | | | - Carine Ho
- Karius, Inc., Redwood City, California, USA
| | - Lisa Wanda
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA
| | | | - Vance G Fowler
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA
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Swarath S, Maharaj N, Kawall T, Seecheran R, Seecheran V, Giddings S, Seecheran NA. Culture-Negative Endocarditis in an Immunocompromised Patient: A Case of Suspected Bartonella and Coxiella Co-Infection. J Investig Med High Impact Case Rep 2023; 11:23247096231192811. [PMID: 37559398 PMCID: PMC10413893 DOI: 10.1177/23247096231192811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 07/19/2023] [Accepted: 07/20/2023] [Indexed: 08/11/2023] Open
Abstract
We present the case of a 23-year-old man with a previous deceased-donor renal transplant maintained on tacrolimus and prednisone who developed culture-negative endocarditis (CNE) of the mitral and aortic valves. He was suspected of being co-infected with Bartonella henselae and Coxiella burnetii, confirmed with serology testing. He was successfully managed with appropriate antibiotics and dual valve replacement.
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Affiliation(s)
- Steven Swarath
- North Central Regional Health Authority, Mt. Hope, Trinidad and Tobago
| | - Nicole Maharaj
- North Central Regional Health Authority, Mt. Hope, Trinidad and Tobago
| | - Tiffany Kawall
- North Central Regional Health Authority, Mt. Hope, Trinidad and Tobago
| | | | - Valmiki Seecheran
- North Central Regional Health Authority, Mt. Hope, Trinidad and Tobago
| | - Stanley Giddings
- The University of the West Indies, Street Augustine, Trinidad and Tobago
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Li M, Yan K, Jia P, Wei E, Wang H. Metagenomic next-generation sequencing may assist diagnosis of cat-scratch disease. Front Cell Infect Microbiol 2022; 12:946849. [PMID: 36189365 PMCID: PMC9524480 DOI: 10.3389/fcimb.2022.946849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 08/26/2022] [Indexed: 11/28/2022] Open
Abstract
Bartonella henselae, the pathogen that causes cat-scratch disease (CSD), is relatively rare in the clinic. CSD usually causes mild clinical manifestations, which self-heal in a matter of weeks. However, in immunocompromised patients, CSD may cause systemic disorders that can lead to critical illness. Due to the diversity of symptom signs and the lack of a golden standard for diagnosis, identifying atypical CSD in a timely manner presents a challenge. Metagenomic next-generation sequencing (mNGS), is a promising technology that has been widely used in the detection of pathogens in clinical infectious diseases in recent years. mNGS can detect multiple pathogens quickly and accurately from any given source. Here, we present a case of atypical CSD, which was diagnosed using mNGS. The patient manifested a fever of unknown infectious origin, and routine antibiotic treatment was ineffective. mNGS was employed to test the patient’s peripheral blood, which led to the detection of B. henselae. This was rarely seen in previous CSD reports. We surmised that the patient presented with atypical CSD and thus a targeted therapy was recommended. Crucially, the patient recovered rapidly. Based on this case study findings, we recommend that CSD should be included in the differential diagnosis for fever of unknown origin and that mNGS may be helpful in the diagnosis of CSD.
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Shi Y, Yang J, Qi Y, Xu J, Shi Y, Shi T, Liu C, Ma X. Detection of Bartonella vinsonii subsp. berkhoffii in a HIV patient using metagenomic Next Generation Sequencing. Emerg Microbes Infect 2022; 11:1764-1767. [PMID: 35736664 PMCID: PMC9295814 DOI: 10.1080/22221751.2022.2094287] [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] [Indexed: 11/28/2022]
Abstract
Bartonella species are fastidious, aerobic bacteria that are transmitted by blood-sucking arthropods. Bartonella spp. are responsible for cat scratch disease, Carrion’s disease, bacillary angiomatosis and trench fever. On the other hand, Bartonella vinsonii is rarely reported in the literature and there exist a few reports of systemic infection caused by Bartonella vinsonii in patients with acquired immunodeficiency syndrome. A 31-year-old male (diagnosed with AIDS six years ago) had persistent fever and ulceration in the right knee. The elevated levels of inflammatory markers suggested an infectious aetiology. Despite the negative findings of blood culture, metagenomic Next-Generation Sequencing of plasma detected Bartonella vinsonii. The polymerase chain reaction of whole blood and Sanger sequencing confirmed the mNGS findings. Immunohistochemical staining had later suggested bacillary angiomatosis, which was consistent with Bartonella infection. Following antibiotic treatment, the ulcers subsided significantly, but a high fever persisted. The patient died due to sudden respiratory failure.
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Affiliation(s)
- Yuru Shi
- Infection hospital area of the First Affiliated Hospital of University of science and technology of China, Hefei, China
| | - Jing Yang
- Infection hospital area of the First Affiliated Hospital of University of science and technology of China, Hefei, China
| | - Yingjie Qi
- Infection hospital area of the First Affiliated Hospital of University of science and technology of China, Hefei, China
| | - Junlan Xu
- Infection hospital area of the First Affiliated Hospital of University of science and technology of China, Hefei, China
| | - Yingqi Shi
- Medical Department, Hangzhou Matridx Biotechnology Co., Ltd, Hangzhou, China
| | - Tiantian Shi
- Medical Department, Hangzhou Matridx Biotechnology Co., Ltd, Hangzhou, China
| | - Chao Liu
- Medical Department, Hangzhou Matridx Biotechnology Co., Ltd, Hangzhou, China
| | - Xiaoling Ma
- Infection hospital area of the First Affiliated Hospital of University of science and technology of China, Hefei, China
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Lavine N, Ohayon A, Mahroum N. Renal autoimmunity: The role of bacterial and viral infections, an extensive review. Autoimmun Rev 2022; 21:103073. [PMID: 35245692 DOI: 10.1016/j.autrev.2022.103073] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 02/27/2022] [Indexed: 02/08/2023]
Abstract
Autoimmunity is a process by which the loss of self-tolerance results in an immune attack against the body own tissues and organs. For autoimmunity to occur, various elements serving as triggers were described by which infections are considered one of the leading factors. In turn, renal involvement in autoimmune diseases, whether by an organ-specific attack, or as part of a systemic disease process, is well known. As bacterial and viral infections are considered to be common triggers for autoimmunity in general, we aimed to study their association with renal autoimmunity in particular. We performed an extensive search of the recent and relevant medical literature regarding renal autoimmunity syndromes such as infection-associated glomerulonephritis and vasculitis, associated with bacterial and viral infections. By utilizing PubMed and Google Scholar search engines, over 200 articles and case reports were reviewed. Among other mechanisms, direct infection of the renal parenchyma, molecular mimicry, induction of B-cells or secretion of superantigens, bacterial and viral pathogens were found to correlate with the development of renal autoimmunity. Nevertheless, this was not true for all pathogens, as some mimic autoimmune diseases and others show a surprisingly protective effect. The exact immunopathogenesis is yet to be determined, however. For conclusion, bacterial and viral infections are linked to renal autoimmunity by both direct damage and as mediators of systemic diseases. Further research particularly on the immunopathogenetic mechanisms of renal autoimmunity associated with infections is required.
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Affiliation(s)
- Noy Lavine
- St. George School of Medicine, University of London, London, UK; Zabludowicz Center for autoimmune diseases, Sheba Medical Center, Ramat-Gan, Israel.
| | - Aviran Ohayon
- St. George School of Medicine, University of London, London, UK; Zabludowicz Center for autoimmune diseases, Sheba Medical Center, Ramat-Gan, Israel
| | - Naim Mahroum
- Zabludowicz Center for autoimmune diseases, Sheba Medical Center, Ramat-Gan, Israel; International School of Medicine, Istanbul Medipol University, Istanbul, Turkey
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