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Lai LM, Zhu XY, Zhao R, Chen Q, Liu JJ, Liu Y, Yuan L. Tropheryma whipplei detected by metagenomic next-generation sequencing in bronchoalveolar lavage fluid. Diagn Microbiol Infect Dis 2024; 109:116374. [PMID: 38805857 DOI: 10.1016/j.diagmicrobio.2024.116374] [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: 02/06/2024] [Revised: 05/20/2024] [Accepted: 05/21/2024] [Indexed: 05/30/2024]
Abstract
Whipple's disease is a chronic systemic infectious disease that mainly affects the gastrointestinal tract. In some cases, Tropheryma whipplei can cause infection at the implant site or even throughout the body. In this study, we collected alveolar lavage fluid samples from patients with Tropheryma whipplei from 2020 to 2022, and retrospectively analyzed the clinical data of Tropheryma whipplei positive patients. Patient's past history, clinical manifestations, laboratory examinations, chest CT findings, treatment, and prognosis were recorded. 16 BALFs (70/1725, 4.0 %) from 16 patients were positive for Tropheryma whipplei. 8 patients were male with an average age of 50 years. The main clinical symptoms of patients included fever (9/16), cough (7/16), dyspnea (7/16), and expectoration (5/16), but neurological symptoms and arthralgia were rare. Cardiovascular and cerebrovascular diseases were the most common comorbidity (n=8). The main laboratory characteristics of the patient are red blood cell count, hemoglobin, total protein and albumin below normal levels (11/16), and/or creatinine above normal levels(14/16). Most chest computed tomography mainly show focal or patchy heterogeneous infection (n=5) and pleural effusion (n=8). Among the 6 samples, Tropheryma whipplei was the sole agent, and Klebsiella pneumoniae was the most common detected other pathogens. Metagenomic next-generation sequencing technology has improved the detection rate and attention of Tropheryma whipplei. Further research is needed to distinguish whether Tropheryma whipplei present in respiratory samples is a pathogen or an innocent bystander.
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Affiliation(s)
- Lan Min Lai
- Department of Clinical laboratory, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, PR China
| | - Xin Yu Zhu
- Department of Clinical laboratory, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, PR China
| | - Rui Zhao
- Department of Clinical laboratory, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, PR China
| | - Qiang Chen
- Department of Clinical laboratory, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, PR China
| | - Jiao Jiao Liu
- Department of Clinical laboratory, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, PR China
| | - Yang Liu
- Department of Clinical laboratory, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, PR China
| | - Lei Yuan
- Department of Clinical laboratory, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, PR China.
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Shen Y, Cui SS, Teng XB, Han MF, Zhang YB. Clinical, Laboratory, and Imaging Characteristics of Tropheryma Whipplei Detection in Bronchoalveolar Lavage Fluid Using Next-Generation Sequencing: A Case-Control Study. Infect Drug Resist 2024; 17:3101-3112. [PMID: 39050831 PMCID: PMC11268753 DOI: 10.2147/idr.s470084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Accepted: 07/05/2024] [Indexed: 07/27/2024] Open
Abstract
Objective The aim of this study was to assess the prevalence of Tropheryma whipplei (TW) infection in the population and to investigate the clinical symptoms, as well as the laboratory and imaging characteristics of patients testing positive for TW using next-generation sequencing (NGS). Methods A retrospective review was conducted on 1346 bronchoalveolar lavage fluid (BALF) samples collected between January 2021 and September 2023. The case group comprised patients with TW detected using NGS while the control group included 65 randomly chosen Gram-positive bacterial infection patients without TW. Comparative analyses were carried out on the basic demographics, laboratory parameters, and imaging findings between the two groups. Additionally, the case group underwent an in-depth examination of underlying diseases, pathogens, final diagnoses, treatment strategies. Results The case group comprised of 51 patients with TW, constituting 3.8% of the total. There was no significant difference in gender and age between the case and control groups (P = 0.84, P = 0.07). Symptoms such as coughing, expectoration, wheezing, fever, and hemoptysis are less commonly detected in the case group with a higher incidence of chest pain when compared to the control group (P >0.05). The case group exhibited decreased albumin levels and increased C-reactive protein and D-dimer levels compared to normal levels. Imaging findings in the case group commonly included nodules, patchy images, and interstitial changes, the most common underlying disease is cardiovascular disease, and the most frequently co-occurring pathogen is the human herpesvirus. Among the case group, 27 patients received a final diagnosis of pneumonia, and 3 patients clinically diagnosed with Whipple's disease demonstrated improvement in both symptoms and imaging after treatment. Conclusion NGS revealed a relatively low overall detection rate of TW-positive patients using BALF. TW was more prevalent in middle-aged and elderly male patients characterized by symptoms such as cough, expectoration, shortness of breath, and fever. Chest imaging in these cases typically showed nodules and interstitial changes.
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Affiliation(s)
- Ya Shen
- Department of Geriatric Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, 230000, People’s Republic of China
- Department of Respiratory and Critical Care Medicine, Fuyang Infectious Disease Clinical College of Anhui Medical University, Fuyang, 236000, People’s Republic of China
| | - Shun-Shun Cui
- Department of Respiratory and Critical Care Medicine, Fuyang People’s Hospital, Fuyang, 236000, People’s Republic of China
| | - Xiao-Bao Teng
- Department of Respiratory and Critical Care Medicine, Fuyang Infectious Disease Clinical College of Anhui Medical University, Fuyang, 236000, People’s Republic of China
| | - Ming-Feng Han
- Department of Respiratory and Critical Care Medicine, Fuyang Infectious Disease Clinical College of Anhui Medical University, Fuyang, 236000, People’s Republic of China
| | - Yan-Bei Zhang
- Department of Geriatric Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, 230000, People’s Republic of China
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3
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Bakhshwin A, Duckworth LA, Toro Castano P, El Hag M, Plesec T. Is PAS Stain Necessary to Exclude Whipple Disease in Duodenal Biopsies? Int J Surg Pathol 2024:10668969241260818. [PMID: 38899912 DOI: 10.1177/10668969241260818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
Objective. Whipple disease, caused by Tropheryma whipplei, is a rare infectious condition primarily presenting with malabsorptive diarrhea. Small bowel biopsies typically reveal foamy macrophages containing periodic acid-Schiff-positive/diastase (PAS/D) resistant T. whipplei bacilli, and PAS(D) staining is occasionally requested by clinicians in duodenal biopsies, which are often histologically unremarkable. The yield of PAS(D) staining in such biopsies has never been reported to our knowledge. Methods. The anatomic pathology database was searched for all specimens of duodenal biopsies stained with PAS(D) from 1993 to 2021. Specimens were categorized by the following histomorphologic features: unremarkable, nonspecific changes, or expansion of the lamina propria by aggregates of foamy histiocytes. Follow-up information was collected, including microbiologic confirmatory testing. Results. There was a total of 193 specimens of duodenal biopsies stained with PAS(D). Biopsies lacking foamy histiocytes on H&E (n = 158) were never PAS-positive. Thirteen biopsies contained PAS-positive histiocytes; 9 out of the 13 PAS-positive specimens were subsequently confirmed to be T. whipplei. Of the 193 specimens, 124 specimens had a clinical request for PAS(D) staining. Only 3 of the 124 (2.4%) specimens showed foamy histiocytes containing PAS-positive granules, all of which were confirmed positive for T. whipplei. Conclusion. PAS(D) staining is unnecessary to exclude Whipple disease in duodenal biopsies without foamy macrophage aggregates, regardless of clinical suspicion. Clinical suspicion-driven biopsies often yield negative results for Whipple disease.
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Affiliation(s)
- Ahmed Bakhshwin
- Department of Pathology, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Lauren Ashley Duckworth
- Department of Pathology, Robert J. Tomsich Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Paula Toro Castano
- Department of Pathology, Robert J. Tomsich Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Mohamed El Hag
- Department of Pathology, Robert J. Tomsich Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Thomas Plesec
- Department of Pathology, Robert J. Tomsich Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH, USA
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Goshia T, Aralar A, Wiederhold N, Jenks JD, Mehta SR, Karmakar A, E S M, Sharma A, Sun H, Kebadireng R, White PL, Sinha M, Hoenigl M, Fraley SI. Universal digital high-resolution melting for the detection of pulmonary mold infections. J Clin Microbiol 2024; 62:e0147623. [PMID: 38695528 PMCID: PMC11237519 DOI: 10.1128/jcm.01476-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 02/21/2024] [Indexed: 05/14/2024] Open
Abstract
Invasive mold infections (IMIs) are associated with high morbidity, particularly in immunocompromised patients, with mortality rates between 40% and 80%. Early initiation of appropriate antifungal therapy can substantially improve outcomes, yet early diagnosis remains difficult to establish and often requires multidisciplinary teams evaluating clinical and radiological findings plus supportive mycological findings. Universal digital high-resolution melting (U-dHRM) analysis may enable rapid and robust diagnoses of IMI. A universal fungal assay was developed for U-dHRM and used to generate a database of melt curve signatures for 19 clinically relevant fungal pathogens. A machine learning algorithm (ML) was trained to automatically classify these pathogen curves and detect novel melt curves. Performance was assessed on 73 clinical bronchoalveolar lavage samples from patients suspected of IMI. Novel curves were identified by micropipetting U-dHRM reactions and Sanger sequencing amplicons. U-dHRM achieved 97% overall fungal organism identification accuracy and a turnaround time of ~4 hrs. U-dHRM detected pathogenic molds (Aspergillus, Mucorales, Lomentospora, and Fusarium) in 73% of 30 samples classified as IMI, including mixed infections. Specificity was optimized by requiring the number of pathogenic mold curves detected in a sample to be >8 and a sample volume to be 1 mL, which resulted in 100% specificity in 21 at-risk patients without IMI. U-dHRM showed promise as a separate or combination diagnostic approach to standard mycological tests. U-dHRM's speed, ability to simultaneously identify and quantify clinically relevant mold pathogens in polymicrobial samples, and detect emerging opportunistic pathogens may aid treatment decisions, improving patient outcomes. IMPORTANCE Improvements in diagnostics for invasive mold infections are urgently needed. This work presents a new molecular detection approach that addresses technical and workflow challenges to provide fast pathogen detection, identification, and quantification that could inform treatment to improve patient outcomes.
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Affiliation(s)
- Tyler Goshia
- Department of Bioengineering, University of California San Diego, San Diego, California, USA
| | - April Aralar
- Department of Bioengineering, University of California San Diego, San Diego, California, USA
| | - Nathan Wiederhold
- Department of Pathology, University of Texas Health Science Center, San Antonio, Texas, USA
| | - Jeffrey D Jenks
- Department of Medicine, Duke University School of Medicine, Durham, North Carolina, USA
- Durham County Department of Public Health, Durham, North Carolina, USA
| | - Sanjay R Mehta
- Department of Medicine, University of California San Diego, San Diego, California, USA
- San Diego Veterans Administration Medical Center, San Diego, California, USA
| | | | - Monish E S
- MelioLabs Inc., Santa Clara, California, USA
| | | | - Haoxiang Sun
- Department of Bioengineering, University of California San Diego, San Diego, California, USA
| | - Refilwe Kebadireng
- Department of Bioengineering, University of California San Diego, San Diego, California, USA
| | - P Lewis White
- Public Health Wales Microbiology Cardiff, Cardiff University, UHW, Cardiff, United Kingdom
- Centre for Trials Research, Division of Infection and Immunity, Cardiff University, UHW, Cardiff, United Kingdom
| | - Mridu Sinha
- MelioLabs Inc., Santa Clara, California, USA
| | - Martin Hoenigl
- Department of Internal Medicine, Medical University of Graz, Graz, Austria
- ECMM Excellence Center for Medical Mycology, Medical University of Graz, Graz, Austria
| | - Stephanie I Fraley
- Department of Bioengineering, University of California San Diego, San Diego, California, USA
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Liu F, Yang X, He Z, OuYang C, Yang X, Yang C. Using Targeted Next-Generation Sequencing to Diagnose Severe Pneumonia Due to Tropheryma Whipplei and Human Metapneumovirus: A Case Report and Literature Review. Infect Drug Resist 2024; 17:1863-1868. [PMID: 38745678 PMCID: PMC11092972 DOI: 10.2147/idr.s451477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 04/17/2024] [Indexed: 05/16/2024] Open
Abstract
Background In addition to the well-known Whipple's disease (WD), Tropheryma Whipplei (TW) can also lead to acute pneumonia. There is no unified consensus on the susceptible population, pathogenesis, clinical manifestations, diagnostic criteria, and treatment options for TW pneumonia. Clinical Presentation and Intervention This is an elderly patient with multiple injuries caused by falling from a building, and was transferred to intensive care unit (ICU) for mechanical ventilation and empirical anti-infection treatment due to severe pneumonia, and then the results of targeted next-generation sequencing (tNGS) in patient's bronchoalveolar lavage fluid (BALF) suggested TW and human metapneumovirus (HMPV) infection, and after switching to anti-infective therapy for TW, the patient was successfully extubated and transferred out of the ICU. Conclusion This is the first case of using tNGS to diagnose severe pneumonia caused by TW and HMPV. We hope that our study can serve as a reference for the diagnosis and treatment of related cases in the future.
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Affiliation(s)
- Fang Liu
- Department of Intensive Care Unit, Jiangxi Provincial People’s Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, People’s Republic of China
| | - XuYong Yang
- Department of Pediatrics, Gaoxin Hospital of The First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
| | - Zhaohui He
- Department of Intensive Care Unit, Jiangxi Provincial People’s Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, People’s Republic of China
| | - Chenghong OuYang
- Department of Intensive Care Unit, Jiangxi Provincial People’s Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, People’s Republic of China
| | - Xiaogang Yang
- Department of Intensive Care Unit, Jiangxi Provincial People’s Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, People’s Republic of China
| | - Chunli Yang
- Department of Intensive Care Unit, Jiangxi Provincial People’s Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, People’s Republic of China
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Li H, Wu J, Mai X, Zeng W, Cai S, Huang X, Zhou C, Li J, Jiang Q, Lai C, Xie C. Novel Patterns in High-Resolution Computed Tomography in Whipple Pneumonia. Emerg Infect Dis 2024; 30:1042-1045. [PMID: 38666708 PMCID: PMC11060448 DOI: 10.3201/eid3005.231130] [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] [Indexed: 04/30/2024] Open
Abstract
With the use of metagenomic next-generation sequencing, patients diagnosed with Whipple pneumonia are being increasingly correctly diagnosed. We report a series of 3 cases in China that showed a novel pattern of movable infiltrates and upper lung micronodules. After treatment, the 3 patients recovered, and lung infiltrates resolved.
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7
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Deng Y, Zhang H, Lu J, Zhou Z, Zhang T, Cui X. Whipple's disease of the respiratory system: A case report. Exp Ther Med 2024; 27:133. [PMID: 38414785 PMCID: PMC10895612 DOI: 10.3892/etm.2024.12421] [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: 09/27/2023] [Accepted: 01/25/2024] [Indexed: 02/29/2024] Open
Abstract
Whipple's disease (WD) is a multiple-system chronic disease caused by Tropheryma whipplei (T. whipplei) infection. The present study describes 3 cases of WD with clinical manifestations of cough, chest pain, headache, dyspnea, sputum, joint pain, abdominal pain, diarrhea and weight loss. Chest computed tomography (CT) showed signs of plaques, nodules and pleural thickening; and bronchoscopic alveolar lavage fluid metagenomic-sequencing indicated that it was T. whipplei. One patient was treated with meropenem as the starting regimen and two patients were treated with ceftriaxone as the starting regimen. Furthermore, two patients were provided with a maintenance regimen of cotrimoxazole and one was given a maintenance regimen of minocycline, which was combined with meropenem and ceftriaxone in order to improve their cough, chest pain, headache and dyspnea symptoms. To the best of our knowledge, there are few reports on WD of the respiratory system caused by T. whipplei, and differential diagnosis is the key to clinical diagnosis. When WD of the respiratory system is difficult to diagnose, metagenomic second-generation sequencing (mNGS) may be a better choice, which can achieve early diagnosis and early treatment. However, its clinical value is still limited; therefore, more research needs to be conducted in the future.
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Affiliation(s)
- Yue Deng
- Department of Respiratory and Critical Care Medicine, The Fifth People's Hospital of Chongqing, Chongqing 400062, P.R. China
| | - Hongmei Zhang
- Department of Respiratory and Critical Care Medicine, The Fifth People's Hospital of Chongqing, Chongqing 400062, P.R. China
| | - Junyu Lu
- Department of Respiratory and Critical Care Medicine, The Fifth People's Hospital of Chongqing, Chongqing 400062, P.R. China
| | - Zhiyu Zhou
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P.R. China
| | - Ting Zhang
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P.R. China
| | - Xuerong Cui
- Department of Respiratory Medicine, People's Hospital of Shizhu Tujia Autonomous County, Chongqing 409199, P.R. China
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Shen Y, Cui SS, Teng XB, Han MF. Acute pneumonia due to Tropheryma whipplei diagnosed by metagenomic next-generation sequencing and pathology: A case report. Heliyon 2024; 10:e26747. [PMID: 38434082 PMCID: PMC10906431 DOI: 10.1016/j.heliyon.2024.e26747] [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: 12/15/2023] [Revised: 02/17/2024] [Accepted: 02/19/2024] [Indexed: 03/05/2024] Open
Abstract
Tropheryma whipplei (TW) is a rod-shaped, gram-positive bacterium that, when chronically infects humans, can lead to multi-system pathologies, including joint pain, abdominal pain with diarrhea and weight loss, myocarditis, pericarditis, and neurologic inflammation. Moreover, acute infections can lead to bronchopulmonary infections, bacteraemia, and acute diarrhea. However, fewer cases of acute pneumonia due to TW have been reported, and this diagnosis is not well founded. Herein, we report a case of acute pneumonia caused by a TW infection. The patient, a middle-aged man, underwent bronchoscopic alveolar lavage, and the metagenomic next-generation sequencing of the lavage fluid suggested TW infection. A lung puncture biopsy tissue specimen was also positive based on periodic acid-Schiff staining. After confirming the diagnosis, the patient was administered ceftriaxone for anti-infection treatment, improving clinical symptoms and lung imaging results. Therefore, in cases where conventional anti-infective treatment is ineffective for patients with acute pneumonia, we should consider the possibility of TW infection, conduct prompt pathogenetic examination, and provide timely treatment after diagnosis to improve overall patient prognosis.
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Affiliation(s)
- Ya Shen
- Department of Respiratory and Critical Care Medicine, Fuyang Infectious Disease Clinical College of Anhui Medical University, Fuyang, Anhui, China
| | - Shun-Shun Cui
- Department of Respiratory and Critical Care Medicine, Fuyang People's Hospital, Fuyang, Anhui, China
| | - Xiao-Bao Teng
- Department of Respiratory and Critical Care Medicine, Fuyang Infectious Disease Clinical College of Anhui Medical University, Fuyang, Anhui, China
| | - Ming-Feng Han
- Department of Respiratory and Critical Care Medicine, Fuyang Infectious Disease Clinical College of Anhui Medical University, Fuyang, Anhui, China
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Yoon S, Hong ME, Hong SA, Kim TH, Lee MK. Prevalence estimation of Tropheryma whipplei in duodenal biopsy tissues of Koreans. Ann Clin Microbiol Antimicrob 2024; 23:2. [PMID: 38172885 PMCID: PMC10765791 DOI: 10.1186/s12941-023-00658-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Accepted: 12/05/2023] [Indexed: 01/05/2024] Open
Abstract
Whipple's disease caused by Tropheryma whipplei is difficult to diagnose because of a broad spectrum of manifestations and non-specific clinical signs. In the current global era, the incidence of duodenal infection/inflammation caused by T. whipplei in Korea may has been underestimated. Here we estimated the prevalence of T. whipplei in duodenal biopsy tissues of Koreans using real-time PCRs (RT-PCRs). A total of 252 duodenal biopsy tissues were collected from Korean patients who underwent esophagogastroduodenoscopy and duodenal biopsy. DNA extracted from the duodenal biopsy tissues was analyzed using three RT-PCRs targeting T. whipplei-specific regions of the 16S-23S rRNA intergenic spacer, hsp65, and Dig15 in parallel. In the samples positive in RT-PCRs, direct sequencing was performed for each RT-PCR target. The prevalence of T. whipplei was estimated based on the RT-PCR and sequencing results. Among the analyzed samples, T. whipplei was not detected. The prevalence of T. whipplei in duodenal biopsy tissues of Koreans was estimated to be less than 0.4%. This is the first study to attempt to detect T. whipplei in duodenal biopsy tissues of Koreans and estimate its prevalence. Our findings infer that while T. whipplei carriers exist in Korea, the incidence of duodenal infection/inflammation caused by T. whipplei is extremely rare.
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Affiliation(s)
- Sumi Yoon
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Min Eui Hong
- Department of Pathology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Soon Auck Hong
- Department of Pathology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Tae-Hyoung Kim
- Department of Urology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Mi-Kyung Lee
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea.
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Goshia T, Aralar A, Wiederhold N, Jenks JD, Mehta SR, Sinha M, Karmakar A, Sharma A, Shrivastava R, Sun H, White PL, Hoenigl M, Fraley SI. Universal Digital High Resolution Melt for the detection of pulmonary mold infections. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.09.566457. [PMID: 37986859 PMCID: PMC10659414 DOI: 10.1101/2023.11.09.566457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
Background Invasive mold infections (IMIs) such as aspergillosis, mucormycosis, fusariosis, and lomentosporiosis are associated with high morbidity and mortality, particularly in immunocompromised patients, with mortality rates as high as 40% to 80%. Outcomes could be substantially improved with early initiation of appropriate antifungal therapy, yet early diagnosis remains difficult to establish and often requires multidisciplinary teams evaluating clinical and radiological findings plus supportive mycological findings. Universal digital high resolution melting analysis (U-dHRM) may enable rapid and robust diagnosis of IMI. This technology aims to accomplish timely pathogen detection at the single genome level by conducting broad-based amplification of microbial barcoding genes in a digital polymerase chain reaction (dPCR) format, followed by high-resolution melting of the DNA amplicons in each digital reaction to generate organism-specific melt curve signatures that are identified by machine learning. Methods A universal fungal assay was developed for U-dHRM and used to generate a database of melt curve signatures for 19 clinically relevant fungal pathogens. A machine learning algorithm (ML) was trained to automatically classify these 19 fungal melt curves and detect novel melt curves. Performance was assessed on 73 clinical bronchoalveolar lavage (BAL) samples from patients suspected of IMI. Novel curves were identified by micropipetting U-dHRM reactions and Sanger sequencing amplicons. Results U-dHRM achieved an average of 97% fungal organism identification accuracy and a turn-around-time of 4hrs. Pathogenic molds (Aspergillus, Mucorales, Lomentospora and Fusarium) were detected by U-dHRM in 73% of BALF samples suspected of IMI. Mixtures of pathogenic molds were detected in 19%. U-dHRM demonstrated good sensitivity for IMI, as defined by current diagnostic criteria, when clinical findings were also considered. Conclusions U-dHRM showed promising performance as a separate or combination diagnostic approach to standard mycological tests. The speed of U-dHRM and its ability to simultaneously identify and quantify clinically relevant mold pathogens in polymicrobial samples as well as detect emerging opportunistic pathogens may provide information that could aid in treatment decisions and improve patient outcomes.
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Affiliation(s)
- Tyler Goshia
- Department of Bioengineering, University of California San Diego, San Diego, CA, USA
| | - April Aralar
- Department of Bioengineering, University of California San Diego, San Diego, CA, USA
| | - Nathan Wiederhold
- Department of Pathology, University of Texas Health Science Center, San Antonio, TX, USA
| | - Jeffrey D. Jenks
- Department of Medicine, Duke University School of Medicine, Durham, NC, USA
- Durham County Department of Public Health, Durham, NC, USA
| | - Sanjay R. Mehta
- Department of Medicine, University of California San Diego, San Diego, CA, USA
- San Diego Veterans Administration Medical Center, San Diego, CA, USA
| | | | | | | | | | - Haoxiang Sun
- Department of Bioengineering, University of California San Diego, San Diego, CA, USA
| | - P. Lewis White
- Public Health Wales Microbiology Cardiff, and Cardiff University Centre for Trials Research/Division of Infection/Immunity, University Hospital of Wales, Cardiff, United Kingdom
| | - Martin Hoenigl
- Department of Medicine, Medical University of Graz, Graz, Austria
| | - Stephanie I. Fraley
- Department of Bioengineering, University of California San Diego, San Diego, CA, USA
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Zhou Y, Yang N, Ruan S, Wu S, Yu D, Jin J. Lung cancer patient with Tropheryma whipplei and Nocardia co-infection. Ultrastruct Pathol 2023; 47:451-459. [PMID: 37533314 DOI: 10.1080/01913123.2023.2241888] [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: 05/28/2023] [Revised: 07/14/2023] [Accepted: 07/25/2023] [Indexed: 08/04/2023]
Abstract
A 34-year-old male presented with lung shadow and was asymptomatic during medical examination. The patient had a prior history of thyroid tumors. Imaging manifestation showed a nodule in the medial segment of the right middle lobe, with partial obstruction of the distal bronchus within the lesion. Ground-glass and inflammatory nodules were observed in the anterior segment of the right upper lobe, as well as chronic inflammatory changes in the lower lobe of the right lung. Lung histopathological examination suggested invasive adenocarcinoma. A morphological examination of the bronchoalveolar lavage fluid revealed the presence of Tropheryma whipplei (TW) and Nocardia. Although TW infection has been reported in cancer patients, co-infection with Nocardia is a unique occurrence in this case. Opportunistic pathogens are common in immunocompromised patients but in this case, the patient was a young adult with normal immunity and an early-stage tumor with TW and Nocardia co-infection. We demonstrated the presence of rare microorganisms through imaging findings, combined with different staining methods of bronchoalveolar lavage fluid and lung tissue sections and evaluation of morphological characteristics. The aim of the present study was to provide early diagnosis and treatment of patients by improving microbial morphological detection.
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Affiliation(s)
- Yuli Zhou
- Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine.261 Huan Sha Rd, Hangzhou, China
| | - Nan Yang
- Department of Nephrology, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Traditional Chinese Medicine), Hangzhou, Zhejiang, China
| | - Senlin Ruan
- Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine.261 Huan Sha Rd, Hangzhou, China
| | - Shenghai Wu
- Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine.261 Huan Sha Rd, Hangzhou, China
| | - Daojun Yu
- Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine.261 Huan Sha Rd, Hangzhou, China
| | - Juan Jin
- Urology and Nephrology Center, Department of Nephrology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, China
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12
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Fang Z, Liu Q, Tang W, Yu H, Zou M, Zhang H, Xue H, Lin S, Pei Y, Ai J, Chen J. Experience in the diagnosis and treatment of pneumonia caused by infection with Tropheryma whipplei: A case series. Heliyon 2023; 9:e17132. [PMID: 37484369 PMCID: PMC10361318 DOI: 10.1016/j.heliyon.2023.e17132] [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: 12/14/2022] [Revised: 05/23/2023] [Accepted: 06/08/2023] [Indexed: 07/25/2023] Open
Abstract
Tropheryma whipplei (TW) is the root cause of Whipple's disease (WD), a rare infectious illness leading to multi-organ impairment. A prominent feature of WD is acute pneumonia, which can be exceedingly challenging to diagnose clinically due to the pathogen's surreptitious nature. However and significantly, with the advent of metagenomic next-generation sequencing (mNGS) of bronchoalveolar lavage fluid (BALF), it offers clinicians a potent tool at their disposal to detect TW infections. The present study conducted a retrospective analysis of clinical data gleaned from five patients in Hunan Province in China. Findings in this study demonstrated the potential of BALF-mNGS in diagnosing pneumonia caused by TW infection.
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Affiliation(s)
- Zhixiong Fang
- Department of Infectious Disease and Public Health, Central Hospital of Xiangtan, Hunan province, China
| | - Qiong Liu
- Linxiang People’s Hospital, Hunan province, China
| | - Wei Tang
- Department of Infectious Disease and Public Health, Central Hospital of Xiangtan, Hunan province, China
| | - Hongyin Yu
- Center for Infectious Diseases, The First People's Hospital of Huaihua, Hunan, China
| | - Min Zou
- Department of Respiratory and Critical Care Medicine, The First People’s Hospital of Xiangtan City Affiliated to Nanhua University, Hunan, China
| | - Haiming Zhang
- Department of Infectious Disease and Public Health, Central Hospital of Xiangtan, Hunan province, China
| | - Haiyan Xue
- Department of Infectious Disease and Public Health, Central Hospital of Xiangtan, Hunan province, China
| | - Sha Lin
- Department of Infectious Disease and Public Health, Central Hospital of Xiangtan, Hunan province, China
| | - Yi Pei
- Department of Tuberculosis, Changsha Central Hospital, Changsha, China
| | - Jingwen Ai
- Department of Infectious Disease, Huashan Hospital Affiliated to Fudan University, Shanghai, China
| | - Jun Chen
- Department of Liver Diseases, Third Hospital of Shenzhen, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong, China
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13
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Lin M, Wang K, Qiu L, Liang Y, Tu C, Chen M, Wang Z, Wu J, Huang Y, Tan C, Chen Q, Zheng X, Liu J. Tropheryma whipplei detection by metagenomic next-generation sequencing in bronchoalveolar lavage fluid: A cross-sectional study. Front Cell Infect Microbiol 2022; 12:961297. [PMID: 36061864 PMCID: PMC9428251 DOI: 10.3389/fcimb.2022.961297] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Accepted: 07/29/2022] [Indexed: 12/19/2022] Open
Abstract
Tropheryma whipplei is the bacterium associated with Whipple’s disease (WD), a chronic systemic infectious disease primarily involving the gastrointestinal tract. T. whipplei can also be detected in different body site of healthy individuals, including saliva and feces. Traditionally, Tropheryma whipplei has a higher prevalence in bronchoalveolar lavage fluid (BALF) of immunocompromised individuals. Few studies have explored the significance of the detection of T. whipplei in BALF. Herein, we retrospectively reviewed 1725 BALF samples which detected for metagenomic next-generation sequencing (mNGS) from March 2019 to April 2022 in Zhuhai, China. Seventy BALs (70/1725, 4.0%) from 70 patients were positive for T. whipplei. Forty-four patients were male with an average age of 50 years. The main symptoms included cough (23/70), expectoration (13/70), weight loss (9/70), and/or dyspnea (8/70), but gastrointestinal symptoms were rare. Chronic liver diseases were the most common comorbidity (n=15, 21.4%), followed by diabetes mellitus (n=13, 18.6%). Only nine patients (12.9%) were immunocompromised. Twenty-four patients (34.3%) were finally diagnosed with reactivation tuberculosis and 15 patients (21.4%) were diagnosed with lung tumors, including 13 primary lung adenocarcinoma and two lung metastases. Fifteen patients (21.4%) had pneumonia. Among the 20 samples, T. whipplei was the sole agent, and Mycobacterium tuberculosis complex was the most common detected other pathogens. Among the non-tuberculosis patients, 31 (31/46, 67.4%) had ground glass nodules or solid nodules on chest CT. Our study indicates that T. whipplei should be considered as a potential contributing factor in some lung diseases. For non-immunocompromised patients, the detection of T. whipplei also needs attention. The mNGS technology improves the detection and attention of rare pathogens. In the future, the infection, colonization, and prognosis of T. whipplei in lung still need to be studied.
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Affiliation(s)
- Minmin Lin
- Department of Pulmonary and Critical Care Medicine (PCCM), the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
- Guangdong Provincial Key Laboratory of Biomedical Imaging and Guangdong Provincial Engineering Research Center of Molecular Imaging, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Kongqiu Wang
- Department of Pulmonary and Critical Care Medicine (PCCM), the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Lidi Qiu
- Department of Infectious Disease Intensive Care Unit, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Yingjian Liang
- Department of Pulmonary and Critical Care Medicine (PCCM), the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Changli Tu
- Department of Pulmonary and Critical Care Medicine (PCCM), the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Meizhu Chen
- Department of Pulmonary and Critical Care Medicine (PCCM), the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Zhenguo Wang
- Department of Pulmonary and Critical Care Medicine (PCCM), the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Jian Wu
- Department of Pulmonary and Critical Care Medicine (PCCM), the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Yiying Huang
- Department of Pulmonary and Critical Care Medicine (PCCM), the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Cuiyan Tan
- Department of Pulmonary and Critical Care Medicine (PCCM), the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Qijiu Chen
- Department of Pulmonary and Critical Care Medicine (PCCM), the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Xiaobin Zheng
- Department of Pulmonary and Critical Care Medicine (PCCM), the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Jing Liu
- Department of Pulmonary and Critical Care Medicine (PCCM), the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
- Guangdong Provincial Key Laboratory of Biomedical Imaging and Guangdong Provincial Engineering Research Center of Molecular Imaging, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
- *Correspondence: Jing Liu,
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14
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Guo Y, Li L, Li Z, Sun L, Wang H. Tropheryma whipplei Detection by Nanopore Sequencing in Patients With Interstitial Lung Disease. Front Microbiol 2021; 12:760696. [PMID: 34912314 PMCID: PMC8667551 DOI: 10.3389/fmicb.2021.760696] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 11/02/2021] [Indexed: 12/11/2022] Open
Abstract
Tropheryma whipplei is a bacterium associated with Whipple's disease, which commonly manifests as weight loss, arthralgia, and diarrhea. The most frequently involved organs comprise the heart and eyes, in addition to the central nervous system. Few studies have explored the relationship between T. whipplei and pneumonia. Herein, we report three patients with interstitial lung disease (ILD) of unknown cause, whose bronchoalveolar lavage fluid (BALF) were evaluated via Nanopore sequencing. In our in-house BALF Nanopore platform, human DNA was removed with saponin, to improve the reads ratio of microorganisms/host. T. whipplei was the sole or most abundant pathogen in all the patients, comprising 1,385, 826, and 285 reads. The positive result was confirmed via quantitative polymerase chain reaction (PCR) with two pairs of primers (cycle threshold value: 33.26/36.29; 31.68/32.01; 28.82/28.80) and Sanger sequencing. To our knowledge, this is the first report of T. whipplei detection using Nanopore-based sequencing. The turnaround time was approximately 6-8 h in clinical laboratories, including less than 1 h for analysis. In conclusion, the results of this study confirm that Nanopore sequencing can rapidly detect rare pathogens, to improve clinical diagnosis. In addition, diagnosis of Whipple's disease should be combined other laboratory findings, such as periodic acid-Schiff (PAS) staining, and considered a possibility in middle-aged men presenting with ILD and a clinical history of unexplained arthralgia and/or fever.
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Affiliation(s)
- Yifan Guo
- Department of Clinical Laboratory, Peking University People's Hospital, Beijing, China.,Institute of Medical Technology, Peking University Health Science Center, Beijing, China
| | - Lijuan Li
- Department of Pulmonary and Critical Care Medicine, National Center for Clinical Research on Respiratory Diseases, China-Japan Friendship Hospital, Beijing, China.,Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing, China
| | - Zhenzhong Li
- State Key Laboratory of Translational Medicine and Innovative Drug Development, Jiangsu Simcere Diagnostics Co., Ltd., Nanjing, China.,Nanjing Simcere Medical Laboratory Science Co., Ltd., Nanjing, China
| | - Lingxiao Sun
- Department of Clinical Laboratory, Peking University People's Hospital, Beijing, China
| | - Hui Wang
- Department of Clinical Laboratory, Peking University People's Hospital, Beijing, China.,Institute of Medical Technology, Peking University Health Science Center, Beijing, China
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15
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Yan J, Zhang B, Zhang Z, Shi J, Liu S, Qi J, Wang M. Case Report: Tropheryma whipplei Hide in an AIDS Patient With Pneumocystis Pneumonia. Front Public Health 2021; 9:663093. [PMID: 34485213 PMCID: PMC8414578 DOI: 10.3389/fpubh.2021.663093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 07/19/2021] [Indexed: 12/19/2022] Open
Abstract
Introduction: Pneumocystis pneumonia (PCP) is one of the most common opportunistic infections in HIV-infected patients. However, coinfection with Tropheryma whipplei is infrequent in AIDS patients with PCP. Case Presentation: We report a 28-year-old male AIDS patient coinfected with T. whipplei and Pneumocystis jirovecii diagnosed in the bronchoalveolar lavage. After sulfamethoxazole-trimethoprim and meropenem treatment, the patient showed clinical improvement in 2 weeks. Conclusion: Clinicians need to be alert to the occurrence of T. whipplei infection in AIDS patients with PCP and timely diagnosis and antibacterial treatments are essential. This case may help clinicians for timely diagnosis of the coinfection of T. whipplei and P. jirovecii in AIDS patients.
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Affiliation(s)
- Jun Yan
- Department II of Infectious Diseases, Xixi Hospital of Hangzhou, Zhejiang University, Hangzhou, China
| | - Binhai Zhang
- Department II of Infectious Diseases, Xixi Hospital of Hangzhou, Zhejiang University, Hangzhou, China
| | - Zhongdong Zhang
- Department II of Infectious Diseases, Xixi Hospital of Hangzhou, Zhejiang University, Hangzhou, China
| | - Jinchuan Shi
- Department II of Infectious Diseases, Xixi Hospital of Hangzhou, Zhejiang University, Hangzhou, China
| | - Shourong Liu
- Department II of Infectious Diseases, Xixi Hospital of Hangzhou, Zhejiang University, Hangzhou, China
| | - Jianjiang Qi
- Department II of Infectious Diseases, Xixi Hospital of Hangzhou, Zhejiang University, Hangzhou, China
| | - Mengyan Wang
- Department II of Infectious Diseases, Xixi Hospital of Hangzhou, Zhejiang University, Hangzhou, China
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16
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Zhu B, Tang J, Fang R, Fei X, Wang Q, Wang W, Wu X, Liu C, Wang Q. Pulmonary coinfection of Mycobacterium tuberculosis and Tropheryma whipplei: a case report. J Med Case Rep 2021; 15:359. [PMID: 34243811 PMCID: PMC8269402 DOI: 10.1186/s13256-021-02899-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Accepted: 05/10/2021] [Indexed: 12/18/2022] Open
Abstract
Background We diagnosed a clinical case of pulmonary infection involving Mycobacterium tuberculosis and Tropheryma whipplei in a patient with acute respiratory distress syndrome. The diagnosis was assisted by metagenomic next-generation sequencing of bronchoalveolar lavage fluid. Case presentation A 44-year-old Han Chinese inmate was transferred to the emergency department because of dry cough, chest tightness, and shortness of breath. The patient’s body temperature rose to 39.3 °C following empirical cephalosporin treatment for 1 week. The blood CD4+/CD8+ ratio was 0.7, suggesting immunodeficiency. Routine microbiological tests were performed, and tuberculosis interferon gamma release assays were positive. Mycobacterium tuberculosis polymerase chain reaction was also positive. Chest computed tomography scan revealed miliary nodules and ground-glass opacifications, which were in accordance with tuberculosis. To fully examine the etiology, we performed routine laboratory tests and metagenomic sequencing, the results of which indicated the presence of Mycobacterium tuberculosis and Tropheryma whipplei. We administered anti-tuberculosis regimen in combination with trimethoprim/sulfamethoxazole. The patient recovered, with chest computed tomography scan showing absorption of lesions. Conclusions Compared with traditional diagnostic methods such as culture and serology, metagenomic next-generation sequencing has the advantage of detecting a wide array of microorganisms in a single test and therefore can be used for clinical diagnosis of rare pathogens and microbial coinfections. It is particularly useful for immunocompromised patients as they are more prone to infection by opportunistic microorganisms.
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Affiliation(s)
- Binghua Zhu
- Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 200021, China
| | - Jing Tang
- Shanghai Guanghua Hosptial of Integrated Traditional Chinese and Western Medicine, Shanghai, 200052, China
| | - Rong Fang
- Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 200021, China
| | - Xuejie Fei
- Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 200021, China
| | - Qing Wang
- Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 200021, China
| | - Wenqing Wang
- Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 200021, China
| | - Xueqin Wu
- Hangzhou Matridx Biotechnology Co., Ltd, Bd 5, 208 Zhenzhong Road, Hangzhou, 311113, Zhejiang, China
| | - Chao Liu
- Hangzhou Matridx Biotechnology Co., Ltd, Bd 5, 208 Zhenzhong Road, Hangzhou, 311113, Zhejiang, China.
| | - Qian Wang
- Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 200021, China.
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17
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Zhang WM, Xu L. Pulmonary parenchymal involvement caused by Tropheryma whipplei. Open Med (Wars) 2021; 16:843-846. [PMID: 34131590 PMCID: PMC8174119 DOI: 10.1515/med-2021-0297] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 04/17/2021] [Accepted: 04/27/2021] [Indexed: 12/18/2022] Open
Abstract
We report a 26-year-old man with left chest pain for 4 days. His chest CT showed a cavity in the left upper lung. Tuberculosis was suspected first, but metagenomics next generation sequencing (mNGS) in bronchoalveolar lavage fluid only detected Tropheryma whipplei. Tropheryma whipplei is the pathogen of Whipple’s disease. The most frequently involved organs are the eyes, heart, and central nervous system. Pulmonary parenchymal involvement is rare. To our knowledge, this is the first reported case of pulmonary cavity caused by Tropheryma whipplei. Nineteen cases of pulmonary parenchymal involvement were found by literature search. The most common respiratory symptom was cough, followed by dyspnea/breathlessness and chest pain. The most common finding in chest imaging was pulmonary nodules, followed by interstitial changes and patchy infiltration. Our case and literature review highlighted that Tropheryma whipplei infection should be considered in the differential diagnosis of pulmonary cavity, pulmonary nodules, interstitial changes, and patchy infiltration. mNGS is helpful to improve diagnosis rate.
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Affiliation(s)
- Wen Mei Zhang
- Department of Respiratory Medicine, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, No. 600, YiShan Road, Shanghai, 200233, China
| | - Ling Xu
- Department of Respiratory Medicine, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, No. 600, YiShan Road, Shanghai, 200233, China
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18
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Li W, Zhang Q, Xu Y, Zhang X, Huang Q, Su Z. Severe pneumonia in adults caused by Tropheryma whipplei and Candida sp. infection: a 2019 case series. BMC Pulm Med 2021; 21:29. [PMID: 33451316 PMCID: PMC7810182 DOI: 10.1186/s12890-020-01384-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 12/20/2020] [Indexed: 12/18/2022] Open
Abstract
Background Whipple’s disease is a chronic infectious disease caused by the Gram-positive bacterium Tropheryma whipplei (TW), which not only affects the gastrointestinal tract and causes malabsorption of nutrients, but several other systems, such as the cardiovascular system, central nervous system, the joints, and the vascular system, can also be simultaneously involved. The aim of this report was to be able to alert the clinician to severe pneumonia caused by TW combined with Candida sp. Case presentation The case study was conducted on patients in September and November 2019. After routine examination and treatment, the results were not satisfactory. A bronchoalveolar lavage (BAL) using metagenomics next-generation sequencing was conducted on two adults who presented with fever, cough, and progressive dyspnea and who had no history of gastrointestinal symptoms, immunodeficiency diseases, or use of immunosuppressive agents. TW and Candida sp. were detected in in BAL. Conclusions This is a report of life-threatening pneumonia caused by TW combined with Candida sp. in a Chinese population.
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Affiliation(s)
- Wei Li
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Jilin University, Changchun, Jilin, China
| | - Qun Zhang
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Jilin University, Changchun, Jilin, China
| | - Yanling Xu
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Jilin University, Changchun, Jilin, China
| | - Xiyue Zhang
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Jilin University, Changchun, Jilin, China
| | - Qian Huang
- Department of Radiology, The Second Hospital of Jilin University, Changchun, Jilin, China
| | - Zhenzhong Su
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Jilin University, Changchun, Jilin, China.
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19
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Duss FR, Jaton K, Vollenweider P, Troillet N, Greub G. Whipple disease: a 15-year retrospective study on 36 patients with positive polymerase chain reaction for Tropheryma whipplei. Clin Microbiol Infect 2020; 27:910.e9-910.e13. [PMID: 32896657 DOI: 10.1016/j.cmi.2020.08.036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 08/16/2020] [Accepted: 08/26/2020] [Indexed: 12/14/2022]
Abstract
Our institution has performed microbiological diagnosis of Tropheryma whipplei since 2001, initially with a PCR targeting 16S rRNA before the development of a quantitative PCR in 2012. Here we report the clinical characteristics of a cohort of patients suffering from Whipple disease (WD) and evaluate the impact of these molecular techniques. Patients with a positive PCR for T. whipplei between 2001 and 2016 were retrospectively collected from microbiological databases. Two infectious diseases specialists reviewed their medical records and classified them as definite WD, probable WD or carriage of T. whipplei without disease. A total of 1153 samples were tested for T. whipplei; 76 samples taken from 36 patients were positive. Fifteen were considered as presenting a definite WD, seven as a probable WD and 14 as carriers. Median age was 56.4 years (extremes, 6.6-76.1). Median time from symptoms to diagnosis was 3 years (2.5 months to 13.3 years). About 60% were immunosuppressed. The most frequent clinical presentations were joint pain (16/22), weight loss (15/22) and/or digestive tract disorder (15/22); 41% had neurological manifestations, 32% pulmonary involvement and 32% lymphadenopathies. Bacterial load in faeces or saliva were 88 425 copies/mL (IQR 6175-292 725) in definite and probable WD and 311 copies/mL (IQR 253-2090) in carriers, respectively. We observed a 90% PPV above 32 200 copies/mL in faeces. WD is a chronic multisystemic disease with frequent pulmonary involvement. Underlying immunodeficiency is commonly observed leading to more complex clinical presentation. Positive T. whipplei PCR in both stool and saliva has a high positive predictive value. Moreover, patients with WD present higher bacterial load in faeces with a threshold of >32 200 copies/mL predicting ongoing infection.
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Affiliation(s)
- François-Régis Duss
- Department of Internal Medicine, University Hospital of Lausanne, Lausanne, Switzerland
| | - Katia Jaton
- Institute of Microbiology, University of Lausanne, Lausanne, Switzerland
| | - Peter Vollenweider
- Department of Internal Medicine, University Hospital of Lausanne, Lausanne, Switzerland
| | - Nicolas Troillet
- Department of Infectious Diseases Valais Hospital, Sion, Switzerland
| | - Gilbert Greub
- Institute of Microbiology, University of Lausanne, Lausanne, Switzerland.
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20
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Cummings LA, Hoogestraat DR, Rassoulian-Barrett SL, Rosenthal CA, Salipante SJ, Cookson BT, Hoffman NG. Comprehensive evaluation of complex polymicrobial specimens using next generation sequencing and standard microbiological culture. Sci Rep 2020; 10:5446. [PMID: 32214207 PMCID: PMC7096443 DOI: 10.1038/s41598-020-62424-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 03/11/2020] [Indexed: 01/19/2023] Open
Abstract
Optimal clinical decision-making depends on identification of clinically relevant organisms present in a sample. Standard microbiological culture may fail to identify unusual or fastidious organisms and can misrepresent relative abundance of sample constituents. Culture-independent methods have improved our ability to deconvolute polymicrobial patient samples. We used next-generation 16S rRNA gene sequencing (NGS16S) to determine how often cultivatable organisms in complex polymicrobial samples are not reported by standard culture. Twenty consecutive bronchoalveolar lavage (BAL) samples were plated to standard and additional media; bacteria were identified by NGS16S analysis of DNA extracted directly from samples or from washed culture plates. 96% of organisms identified were cultivable, but only 21% were reported by standard culture, indicating that standard work-up provides an incomplete assessment of microbial constituents. Direct NGS16S correlated well with standard culture, identifying the same predominant organism in 50% of samples. When predominant organisms differed, NGS16S most often detected anaerobes, whose growth is unsupported by standard culture conditions for this specimen. NGS16S identified more organisms per sample and allowed identification of fastidious organisms, while culture was better at capturing organisms when bacterial load was low, and allowed incidental recovery of non-bacterial pathogens. Molecular and culture-based methods together detect more organisms than either method alone.
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Affiliation(s)
- Lisa A Cummings
- Departments of Laboratory Medicine, University of Washington, Seattle, Washington, USA
| | - Daniel R Hoogestraat
- Departments of Laboratory Medicine, University of Washington, Seattle, Washington, USA
| | | | | | - Stephen J Salipante
- Departments of Laboratory Medicine, University of Washington, Seattle, Washington, USA
| | - Brad T Cookson
- Departments of Laboratory Medicine, University of Washington, Seattle, Washington, USA.,Departments of Microbiology, University of Washington, Seattle, Washington, USA
| | - Noah G Hoffman
- Departments of Laboratory Medicine, University of Washington, Seattle, Washington, USA.
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21
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Lagier JC, Raoult D. Whipple's disease and Tropheryma whipplei infections: when to suspect them and how to diagnose and treat them. Curr Opin Infect Dis 2019; 31:463-470. [PMID: 30299363 DOI: 10.1097/qco.0000000000000489] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
PURPOSE OF REVIEW The delay between first clinical signs and diagnosis of Whipple's disease and Tropheryma whipplei infections is more than 6 years, and relapses are frequently observed, resulting in a need for clinicians to be aware of this infection. RECENT FINDINGS 18 FDG-PET is useful in the diagnosis and the follow-up of patients (particularly in case of neurological involvement). Histological involvement remains the goldstandard for classic Whipple's disease diagnosis. PCR performed on biopsies of fluid is the main tool for the diagnosis of localized chronic infections. PCR performed on urine samples should become an important role of noninvasive diagnostic strategies, while T. whipplei PCR performed on saliva and stool lack specificity. Because of lifetime susceptibility to T. whipplei and in-vitro susceptibility data, a 1-year course of doxycycline and hydroxychloroquine followed by a lifelong treatment by doxycycline is recommended for Whipple's disease, localized endocarditis and encephalitis. SUMMARY Clinical involvement of the different T. whipplei infections is well described, as well as the treatment of Whipple's disease, endocarditis and encephalitis. The place of PCR performed on urine remains to be clarified for diagnosis of localized T. whipplei infections and acute infections as well as the optimal treatment for arthritis and acute infections.
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22
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Qi C, Hountras P, Pickens CO, Walter JM, Kruser JM, Singer BD, Seed P, Green SJ, Wunderink RG. Detection of respiratory pathogens in clinical samples using metagenomic shotgun sequencing. J Med Microbiol 2019; 68:996-1002. [PMID: 31136295 DOI: 10.1099/jmm.0.000968] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
PURPOSE In this pilot study, we used shotgun metagenome sequencing (SMS) strategy on bronchoalveolar lavage (BAL) samples from hospitalized patients with suspected ventilate-associated pneumonia (VAP) in order to explore its potential for improving detection of ventilator-associated-pneumonia (VAP) etiology. METHODOLOGY In total, 67BAL samples from patients with VAP were tested with SMS strategy for detection of respiratory pathogens. Results of SMS and routine respiratory culture were compared. RESULTS SMS detected all pathogens recovered by cultivation approaches. In addition, putative pathogens other than the organisms recovered by culture were detected by SMS in culture-positive samples. In 40 of 45 (89 %) culture-negative samples, a potential pathogen was detected by SMS. CONCLUSION This proof-of-concept study demonstrates that SMS is able to detect bacterial, fungal and viral organisms in BAL, including culture-negative cases.
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Affiliation(s)
- Chao Qi
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Peter Hountras
- Division of Pulmonary and Critical Care, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Chiagozie Ononye Pickens
- Division of Pulmonary and Critical Care, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - James M Walter
- Division of Pulmonary and Critical Care, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Jacqueline M Kruser
- Division of Pulmonary and Critical Care, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Benjamin D Singer
- Division of Pulmonary and Critical Care, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Patrick Seed
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,Ann and Robert H. Lurie Childrens Hospital, Chicago IL, USA.,Stanley Manne Children's Research Institute, Chicago IL, USA
| | - Stefan J Green
- Research Resources Center, University of Illinois at Chicago, Chicago IL, USA
| | - Richard G Wunderink
- Division of Pulmonary and Critical Care, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
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23
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Melenotte C, Drancourt M, Gorvel JP, Mège JL, Raoult D. Post-bacterial infection chronic fatigue syndrome is not a latent infection. Med Mal Infect 2019; 49:140-149. [DOI: 10.1016/j.medmal.2019.01.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 01/15/2019] [Indexed: 01/20/2023]
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24
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Clinical Manifestations, Treatment, and Diagnosis of Tropheryma whipplei Infections. Clin Microbiol Rev 2017; 30:529-555. [PMID: 28298472 DOI: 10.1128/cmr.00033-16] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Whipple's disease is a rare infectious disease that can be fatal if left untreated. The disease is caused by infection with Tropheryma whipplei, a bacterium that may be more common than was initially assumed. Most patients present with nonspecific symptoms, and as routine cultivation of the bacterium is not feasible, it is difficult to diagnose this infection. On the other hand, due to the generic symptoms, infection with this bacterium is actually quite often in the differential diagnosis. The gold standard for diagnosis used to be periodic acid-Schiff (PAS) staining of duodenal biopsy specimens, but PAS staining has a poor specificity and sensitivity. The development of molecular techniques has resulted in more convenient methods for detecting T. whipplei infections, and this has greatly improved the diagnosis of this often missed infection. In addition, the molecular detection of T. whipplei has resulted in an increase in knowledge about its pathogenicity, and this review gives an overview of the new insights in epidemiology, pathogenesis, clinical manifestations, diagnosis, and treatment of Tropheryma whipplei infections.
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25
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Lagier JC, Fenollar F, Raoult D. Acute infections caused by Tropheryma whipplei. Future Microbiol 2017; 12:247-254. [DOI: 10.2217/fmb-2017-0178] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Tropheryma whipplei is the causative bacterium of Whipple's disease. Its first culture has led to an enlargement of the field of the caused infections. Here, we comprehensively review acute T. whipplei infections. In a cohort study featuring 4000 children, T. whipplei was significantly more common in patients with diarrhea (4%) than in those without (1.7%). A case–controlled study highlighted 58 patients suffering from pneumonia with the detection of T. whipplei in their bronchoalveolar fluids. Finally, a recent study detected T. whipplei in the blood of 36 febrile patients experiencing pulmonary symptoms in a rural area of Senegal. T. whipplei is definitively an agent of acute gastroenteritis, a cause of nonmalarial fever in Africa, and probably a cause of pulmonary infections.
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Affiliation(s)
- Jean-Christophe Lagier
- Aix Marseille Université, URMITE, IHU Méditerranée-Infection, UM63, CNRS 7278, IRD 198, INSERM 1095, 27 Boulevard Jean Moulin, 13385 Marseille Cedex 5, France
| | - Florence Fenollar
- Aix Marseille Université, URMITE, IHU Méditerranée-Infection, UM63, CNRS 7278, IRD 198, INSERM 1095, 27 Boulevard Jean Moulin, 13385 Marseille Cedex 5, France
| | - Didier Raoult
- Aix Marseille Université, URMITE, IHU Méditerranée-Infection, UM63, CNRS 7278, IRD 198, INSERM 1095, 27 Boulevard Jean Moulin, 13385 Marseille Cedex 5, France
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