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Xie K, Guan S, Kong X, Ji W, Du C, Jia M, Wang H. Predictors of mortality in severe pneumonia patients: a systematic review and meta-analysis. Syst Rev 2024; 13:210. [PMID: 39103964 DOI: 10.1186/s13643-024-02621-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 07/18/2024] [Indexed: 08/07/2024] Open
Abstract
BACKGROUND Severe pneumonia has consistently been associated with high mortality. We sought to identify risk factors for the mortality of severe pneumonia to assist in reducing mortality for medical treatment. METHODS Electronic databases including PubMed, Web of Science, EMBASE, Cochrane Library, and Scopus were systematically searched till June 1, 2023. All human research were incorporated into the analysis, regardless of language, publication date, or geographical location. To pool the estimate, a mixed-effect model was used. The Newcastle-Ottawa Scale (NOS) was employed for assessing the quality of included studies that were included in the analysis. RESULTS In total, 22 studies with a total of 3655 severe pneumonia patients and 1107 cases (30.29%) of death were included in the current meta-analysis. Significant associations were found between age [5.76 years, 95% confidence interval [CI] (3.43, 8.09), P < 0.00001], male gender [odds ratio (OR) = 1.47, 95% CI (1.07, 2.02), P = 0.02], and risk of death from severe pneumonia. The comorbidity of neoplasm [OR = 3.37, 95% CI (1.07, 10.57), P = 0.04], besides the presence of complications such as diastolic hypotension [OR = 2.60, 95% CI (1.45, 4.67), P = 0.001], ALI/ARDS [OR = 3.63, 95% CI (1.78, 7.39), P = 0.0004], septic shock [OR = 9.43, 95% CI (4.39, 20.28), P < 0.00001], MOF [OR = 4.34, 95% CI (2.36, 7.95), P < 0.00001], acute kidney injury [OR = 2.45, 95% CI (1.14, 5.26), P = 0.02], and metabolic acidosis [OR = 5.88, 95% CI (1.51, 22.88), P = 0.01] were associated with significantly higher risk of death among patients with severe pneumonia. Those who died, compared with those who survived, differed on multiple biomarkers on admission including serum creatinine [Scr: + 67.77 mmol/L, 95% CI (47.21, 88.34), P < 0.00001], blood urea nitrogen [BUN: + 6.26 mmol/L, 95% CI (1.49, 11.03), P = 0.01], C-reactive protein [CRP: + 33.09 mg/L, 95% CI (3.01, 63.18), P = 0.03], leukopenia [OR = 2.63, 95% CI (1.34, 5.18), P = 0.005], sodium < 136 mEq/L [OR = 2.63, 95% CI (1.34, 5.18), P = 0.005], albumin [- 5.17 g/L, 95% CI (- 7.09, - 3.25), P < 0.00001], PaO2/FiO2 [- 55.05 mmHg, 95% CI (- 60.11, - 50.00), P < 0.00001], arterial blood PH [- 0.09, 95% CI (- 0.15, - 0.04), P = 0.0005], gram-negative microorganism [OR = 2.56, 95% CI (1.17, 5.62), P = 0.02], and multilobar or bilateral involvement [OR = 3.65, 95% CI (2.70, 4.93), P < 0.00001]. CONCLUSIONS Older age and male gender might face a greater risk of death in severe pneumonia individuals. The mortality of severe pneumonia may also be significantly impacted by complications such diastolic hypotension, ALI/ARDS, septic shock, MOF, acute kidney injury, and metabolic acidosis, as well as the comorbidity of neoplasm, and laboratory indicators involving Scr, BUN, CRP, leukopenia, sodium, albumin, PaO2/FiO2, arterial blood PH, gram-negative microorganism, and multilobar or bilateral involvement. SYSTEMATIC REVIEW REGISTRATION PROSPERO Protocol Number: CRD 42023430684.
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Affiliation(s)
- Kai Xie
- Department of Respiratory Medicine, The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, China
- Academy of Chinese Medical Sciences, The First Clinical Medical College of Henan University of Chinese Medicine, Zhengzhou, China
- Co-Construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases By Henan & Education Ministry of P.R. China, Henan University of Chinese Medicine, Zhengzhou, China
| | - Shengnan Guan
- Department of Respiratory Medicine, The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, China
- Academy of Chinese Medical Sciences, The First Clinical Medical College of Henan University of Chinese Medicine, Zhengzhou, China
- Co-Construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases By Henan & Education Ministry of P.R. China, Henan University of Chinese Medicine, Zhengzhou, China
| | - Xinxin Kong
- Department of Respiratory Medicine, The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, China
- Academy of Chinese Medical Sciences, The First Clinical Medical College of Henan University of Chinese Medicine, Zhengzhou, China
- Co-Construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases By Henan & Education Ministry of P.R. China, Henan University of Chinese Medicine, Zhengzhou, China
| | - Wenshuai Ji
- Department of Respiratory Medicine, The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, China
- Academy of Chinese Medical Sciences, The First Clinical Medical College of Henan University of Chinese Medicine, Zhengzhou, China
- Co-Construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases By Henan & Education Ministry of P.R. China, Henan University of Chinese Medicine, Zhengzhou, China
| | - Chen Du
- Department of Respiratory Medicine, The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, China
- Academy of Chinese Medical Sciences, The First Clinical Medical College of Henan University of Chinese Medicine, Zhengzhou, China
- Co-Construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases By Henan & Education Ministry of P.R. China, Henan University of Chinese Medicine, Zhengzhou, China
| | - Mingyan Jia
- Department of Respiratory Medicine, The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, China
- Academy of Chinese Medical Sciences, The First Clinical Medical College of Henan University of Chinese Medicine, Zhengzhou, China
- Co-Construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases By Henan & Education Ministry of P.R. China, Henan University of Chinese Medicine, Zhengzhou, China
| | - Haifeng Wang
- Department of Respiratory Medicine, The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, China.
- Academy of Chinese Medical Sciences, The First Clinical Medical College of Henan University of Chinese Medicine, Zhengzhou, China.
- Co-Construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases By Henan & Education Ministry of P.R. China, Henan University of Chinese Medicine, Zhengzhou, China.
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Zhang Y, Liang S, Deng Z, Zhao Z, Han X. High-glucose conditions attenuate the response of macrophages to Legionella pneumophila infection by inhibiting NOD1 and MAPK signaling. Int Immunopharmacol 2024; 134:112254. [PMID: 38749333 DOI: 10.1016/j.intimp.2024.112254] [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: 01/24/2024] [Revised: 05/08/2024] [Accepted: 05/09/2024] [Indexed: 06/03/2024]
Abstract
BACKGROUND Patients with diabetes are particularly susceptible to Legionella pneumophila (LP) infection, but the exact pathogenesis of LP infection in diabetic patients is still not fully understood. Herein, we investigated the effect of diabetes on immune function during LP infection in vitro and in vivo. METHODS The time course of LP infection in macrophages under normal and high-glucose (HG) conditions was examined in vitro. Western blot was used to determine nucleotide-binding oligomerization domain 1 (NOD1), kinase 1/2 (ERK1/2), mitogen-activated protein kinase p38 (MAPK p38), and c-Jun N-terminal kinases (JNK). Enzyme-linked immunosorbent assay (ELISA) was used to assess the secretion of tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6). Cell Counting Kit-8 (CCK8) assay assessed U937 cell viability after treating cells with different concentrations of high sugar medium and ML130 (NOD1 inhibitor). For the in vivo study, normal and streptozocin-induced diabetic guinea pigs were infected with LP for 6, 24, and 72 h, after which NOD1, MAPK-related signals, TNF-α, and IL-6 expression in lung tissues were assessed using immunohistochemistry, western blot, and RT-PCR. RESULTS HG attenuated the upregulation of NOD1 expression and reduced TNF-α and IL-6 secretion caused by LP compared with LP-infected cells exposed to normal glucose levels (all p < 0.05). In diabetic guinea pigs, HG inhibited the upregulation of NOD1 expression in lung tissues and the activation of p38, ERK1/2, and cJNK caused by LP infection compared to control pigs (all p < 0.05). CONCLUSION HG attenuates the response of macrophages to LP infection by inhibiting NOD1 upregulation and the activation of MAPK signaling.
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Affiliation(s)
- Yuting Zhang
- Department of Pulmonary and Critical Care Medicine, Shengjing Hospital of China Medical University, Liaoning Province, Shenyang 110001, PR China
| | - Sicong Liang
- Department of Pulmonary and Critical Care Medicine, Shengjing Hospital of China Medical University, Liaoning Province, Shenyang 110001, PR China
| | - Ze Deng
- Department of Pulmonary and Critical Care Medicine, Shengjing Hospital of China Medical University, Liaoning Province, Shenyang 110001, PR China
| | - Zirui Zhao
- Department of Pulmonary and Critical Care Medicine, Shengjing Hospital of China Medical University, Liaoning Province, Shenyang 110001, PR China
| | - Xu Han
- Department of Emergency, Shengjing Hospital of China Medical University, Liaoning Province, Shenyang 110001, PR China.
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Rello J, Allam C, Ruiz-Spinelli A, Jarraud S. Severe Legionnaires' disease. Ann Intensive Care 2024; 14:51. [PMID: 38565811 PMCID: PMC10987467 DOI: 10.1186/s13613-024-01252-y] [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: 10/14/2023] [Accepted: 01/18/2024] [Indexed: 04/04/2024] Open
Abstract
BACKGROUND Legionnaires' disease (LD) is a common but under-diagnosed cause of community-acquired pneumonia (CAP), although rapid detection of urine antigen testing (UAT) and advances in molecular testing have improved the diagnosis. LD entails intensive care unit (ICU) admission in almost one-third of cases, and the mortality rate ranges from 4% to 40%. This review aims to discuss recent advances in the study of this condition and to provide an update on the diagnosis, pathogenesis and management of severe LD. RESULTS The overall incidence of LD has increased worldwide in recent years due to the higher number of patients with risk factors, especially immunosuppression, and to improvements in diagnostic methods. Although LD is responsible for only around 5% of all-cause CAP, it is one of the three most common causes of CAP requiring ICU admission. Mortality in ICU patients, immunocompromised patients or patients with a nosocomial source of LD can reach 40% despite appropriate antimicrobial therapy. Regarding pathogenesis, no Legionella-specific virulence factors have been associated with severity; however, recent reports have found high pulmonary Legionella DNA loads, and impairments in immune response and lung microbiome in the most severe cases. The clinical picture includes severe lung injury requiring respiratory and/or hemodynamic support, extrapulmonary symptoms and non-specific laboratory findings. LD diagnostic methods have improved due to the broad use of UAT and the development of molecular methods allowing the detection of all Lp serogroups. Therapy is currently based on macrolides, quinolones, or a combination of the two, with prolonged treatment in severe cases. CONCLUSIONS Numerous factors influence the mortality rate of LD, such as ICU admission, the underlying immune status, and the nosocomial source of the infection. The host immune response (hyperinflammation and/or immunoparalysis) may also be associated with increased severity. Given that the incidence of LD is rising, studies on specific biomarkers of severity may be of great interest. Further assessments comparing different regimens and/or evaluating host-directed therapies are nowadays needed.
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Affiliation(s)
- Jordi Rello
- Global Health ECore, Vall d'Hebron Institut of Research (VHIR), Barcelona, Spain
- Formation Recherche Evaluation (FOREVA) Research Group, CHU Nîmes, Nîmes, France
| | - Camille Allam
- Institut des Agents Infectieux, Centre National de Référence des Légionelles, Hospices Civils de Lyon, Lyon, France
- Centre International de Recherche en Infectiologie (CIRI), Équipe Pathogenèse des Légionelles, Université Lyon, Inserm, U1111,Université Claude Bernard Lyon 1, CNRS, UMR5308,École Normale Supérieure de Lyon, Lyon, France
| | | | - Sophie Jarraud
- Institut des Agents Infectieux, Centre National de Référence des Légionelles, Hospices Civils de Lyon, Lyon, France.
- Centre International de Recherche en Infectiologie (CIRI), Équipe Pathogenèse des Légionelles, Université Lyon, Inserm, U1111,Université Claude Bernard Lyon 1, CNRS, UMR5308,École Normale Supérieure de Lyon, Lyon, France.
- Centre National de Reference des Légionelles, Institut des Agents Infectieux, Hospices Civils de Lyon, 103 Grande rue de la Croix Rousse, 69317, Lyon Cedex 04, France.
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Guo Z, Zuo A, Liu X, Jiang Y, Yang S, Lu D. Multiple pulmonary cavities in an immunocompetent patient: a case report and literature review. Front Med (Lausanne) 2024; 11:1329381. [PMID: 38476447 PMCID: PMC10930033 DOI: 10.3389/fmed.2024.1329381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Accepted: 02/16/2024] [Indexed: 03/14/2024] Open
Abstract
Legionella pneumonia (LP) is a relatively uncommon yet well-known type of atypical community-acquired pneumonia (CAP). It is characterized by a rapid progression to severe pneumonia and can be easily misdiagnosed. In most patients, chest computed tomography (CT) showed patchy infiltration, which may progress to lobar infiltration or even lobar consolidation. While pulmonary cavities are commonly observed in immunocompromised patients with LP, they are considered rare in immunocompetent individuals. Herein, we present a case of LP in an immunocompetent patient with multiple cavities in both lungs. Pathogen detection was performed using metagenomic next-generation sequencing (mNGS). This case highlights the unusual radiographic presentation of LP in an immunocompetent patient and emphasizes the importance of considering LP as a possible diagnosis in patients with pulmonary cavities, regardless of their immune status. Furthermore, the timely utilization of mNGS is crucial for early pathogen identification, as it provides multiple benefits in enhancing the diagnosis and prognosis of LP patients.
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Affiliation(s)
| | | | | | | | | | - Degan Lu
- Department of Respiratory, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Shandong Institute of Respiratory Diseases, Shandong Institute of Anesthesia and Respiratory Critical Medicine, Jinan, China
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Noh HD, Oh J, Park KH, Park B. An Epidemiological Study on Legionnaires' Disease in Gyeonggi Province, Korea: Occurrence, Infection Routes, and Risk Factors for Mortality (2016-2022). MEDICINA (KAUNAS, LITHUANIA) 2024; 60:227. [PMID: 38399516 PMCID: PMC10890248 DOI: 10.3390/medicina60020227] [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: 12/11/2023] [Revised: 01/22/2024] [Accepted: 01/26/2024] [Indexed: 02/25/2024]
Abstract
Background and Objectives: Legionnaires' disease (LD) is an acute respiratory disease with increasing annual numbers of reported domestic and global cases. This study aimed to establish foundational data for the prevention and control of LD by investigating the occurrence and infection routes of reported and suspected cases of LD in Gyeonggi Province, Korea, from January 2016 to December 2022, and by and analyzing the risk factors for death. Materials and Methods: A sex-and-age standardization was performed on LD patients and suspected cases reported in Gyeonggi Province. The monthly average number of confirmed cases was visualized using graphs, and a survival analysis was performed using Kaplan-Meier survival curves. The mortality risk ratio was estimated using the Cox proportional hazards model. Results: The incidence of LD in Gyeonggi Province mirrored the national trend, peaking in July with the highest number of confirmed and suspected cases. While there was no significant difference in survival rates by age, the survival rate was higher for suspected cases when analyzed separately. Comparing the death ratio by infection route, nosocomial infections showed the highest death ratio, and intensive care unit (ICU) admission and the presence of coinfections were significantly correlated with mortality. Factors such as nosocomial infection, admission within 1 to 3 days following diagnosis, and the development of complications were factors contributing to a higher risk of death. Conclusions: The general characteristics of patients with LD were similar to those suggested by previous studies. The proportion of community-acquired infections was lower than in previous studies, but the length of hospital stay was similar for survivors and the deceased, and the mortality rate within 30 days after diagnosis was higher for nosocomial infections. In conclusion, nosocomial infection, a period of up to 3 days from admission to diagnosis, and complications were significantly related to the mortality rate of LD.
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Affiliation(s)
- Hae-Deun Noh
- Gyeonggi Infectious Disease Control Center, Health Bureau, Gyeonggi Provincial Government, Suwon 16508, Republic of Korea; (H.-D.N.); (J.O.); (K.-H.P.)
| | - Jeonghyeon Oh
- Gyeonggi Infectious Disease Control Center, Health Bureau, Gyeonggi Provincial Government, Suwon 16508, Republic of Korea; (H.-D.N.); (J.O.); (K.-H.P.)
| | - Kun-Hee Park
- Gyeonggi Infectious Disease Control Center, Health Bureau, Gyeonggi Provincial Government, Suwon 16508, Republic of Korea; (H.-D.N.); (J.O.); (K.-H.P.)
| | - Boyoung Park
- Department of Preventive Medicine, Hanyang University College of Medicine, Seoul 04763, Republic of Korea
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Grotberg JC, Schulte L, Schumer E, Sullivan M, Kotkar K, Masood MF, Pawale A. Venovenous extracorporeal membrane oxygenation after cardiac arrest for acute respiratory distress syndrome caused by Legionella: a case report. J Cardiothorac Surg 2024; 19:27. [PMID: 38281956 PMCID: PMC10822179 DOI: 10.1186/s13019-024-02492-6] [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: 12/06/2022] [Accepted: 01/14/2024] [Indexed: 01/30/2024] Open
Abstract
BACKGROUND Legionella remains underdiagnosed in the intensive care unit and can progress to acute respiratory distress syndrome (ARDS), multiorgan failure and death. In severe cases, venovenous extracorporeal membrane oxygenation (VV-ECMO) allows time for resolution of disease with Legionella-targeted therapy. VV-ECMO outcomes for Legionella are favorable with reported survival greater than 70%. Rapid molecular polymerase chain reaction (PCR) testing of the lower respiratory tract aids in diagnosing Legionella with high sensitivity and specificity. We present a unique case of a patient with a positive COVID-19 test and ARDS who suffered a cardiac arrest. The patient was subsequently cannulated for VV-ECMO, and after lower respiratory tract PCR testing, Legionella was determined to be the cause. She was successfully treated and decannulated from VV-ECMO after eight days. CASE PRESENTATION A 53-year-old female presented with one week of dyspnea and a positive COVID-19 test. She was hypoxemic, hypotensive and had bilateral infiltrates on imaging. She received supplemental oxygen, intravenous fluids, vasopressors, broad spectrum antibiotics, and was transferred to a tertiary care center. She developed progressive hypoxemia and suffered a cardiac arrest, requiring ten minutes of CPR and endotracheal intubation to achieve return of spontaneous circulation. Despite mechanical ventilation and paralysis, she developed refractory hypoxemia and was cannulated for VV-ECMO. Dexamethasone and remdesivir were given for presumed COVID-19. Bronchoscopy with bronchoalveolar lavage (BAL) performed with PCR testing was positive for Legionella pneumophila and negative for COVID-19. Steroids and remdesivir were discontinued and she was treated with azithromycin. Her lung compliance improved, and she was decannulated after eight days on VV-ECMO. She was discharged home on hospital day 16 breathing room air and neurologically intact. CONCLUSIONS This case illustrates the utility of rapid PCR testing to diagnose Legionella in patients with respiratory failure and the early use of VV-ECMO in patients with refractory hypoxemia secondary to Legionella infection. Moreover, many patients encountered in the ICU may have prior COVID-19 immunity, and though a positive COVID-19 test may be present, further investigation with lower respiratory tract PCR testing may provide alternative diagnoses. Patients with ARDS should undergo Legionella-specific testing, and if Legionella is determined to be the causative organism, early VV-ECMO should be considered in patients with refractory hypoxemia given reported high survival rates.
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Affiliation(s)
- John C Grotberg
- Division of Pulmonary and Critical Care Medicine, Washington University School of Medicine, Missouri. 660 S. Euclid Ave, St. Louis, MO, 63110, USA.
| | - Linda Schulte
- Division of Cardiothoracic Surgery, Washington University School of Medicine, Missouri. 660 S. Euclid Ave, St. Louis, MO, 63110, USA
| | - Erin Schumer
- Division of Cardiothoracic Surgery, Washington University School of Medicine, Missouri. 660 S. Euclid Ave, St. Louis, MO, 63110, USA
| | - Mary Sullivan
- Division of Cardiothoracic Surgery, Washington University School of Medicine, Missouri. 660 S. Euclid Ave, St. Louis, MO, 63110, USA
| | - Kunal Kotkar
- Division of Cardiothoracic Surgery, Washington University School of Medicine, Missouri. 660 S. Euclid Ave, St. Louis, MO, 63110, USA
| | - Mohammad F Masood
- Division of Cardiothoracic Surgery, Washington University School of Medicine, Missouri. 660 S. Euclid Ave, St. Louis, MO, 63110, USA
| | - Amit Pawale
- Division of Cardiothoracic Surgery, Washington University School of Medicine, Missouri. 660 S. Euclid Ave, St. Louis, MO, 63110, USA
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Lupia T, Corcione S, Shbaklo N, Rizzello B, De Benedetto I, Concialdi E, Navazio AS, Penna M, Brusa MT, De Rosa FG. Legionella pneumophila Infections during a 7-Year Retrospective Analysis (2016-2022): Epidemiological, Clinical Features and Outcomes in Patients with Legionnaires' Disease. Microorganisms 2023; 11:microorganisms11020498. [PMID: 36838463 PMCID: PMC9965988 DOI: 10.3390/microorganisms11020498] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 02/06/2023] [Accepted: 02/13/2023] [Indexed: 02/19/2023] Open
Abstract
Legionella pneumophila (LP) is one of the main causative agents of community-acquired pneumonia in Europe and its fifth bacterial cause in Italy (4.9%). We conducted a seven year retrospective analysis of LP infection serogroup 1 in Asti, Piedmont, between 2016 and 2022. Patients were included if they tested positive for the Legionella urinary antigen. Clinical, laboratory, and radiologic data were analyzed to describe the risk factors for mortality. Fifty patients with LD were collected, mainly male, with a median age of 69 years. The main comorbidities were cardiovascular diseases (50%), pulmonary diseases (26%), and neurological diseases (12%). The most common clinical presentations were fever, respiratory, gastrointestinal, and neurologic symptoms. Older age (p = 0.004), underlying cardiovascular diseases (p = 0.009), late diagnosis at admission (p = 0.035), and neurological symptoms at diagnosis (p = 0.046) were more common in the non-survivor group. Moreover, a septic-shock presentation or the need for non-invasive ventilation at admission were associated with a higher mortality. No considerable differences in the biochemical data were found between the two groups except for the median neutrophil count, lymphocyte count, neutrophil-to-lymphocyte ratio, and PCT value. We did not find any differences in mortality related to the choice of antibiotic regimen. Differences in outcome were associated with the median duration of treatment (p =< 0.001) but not to the choice of antibiotic regimen (mainly levofloxacin or azithromycin). In conclusion, early individuation of the wide spectrum of clinical characteristics of LP infection such as respiratory, cardiac, and neurological manifestations of the patient's comorbidities, and significant biochemical data should help clinicians flag high risk patients and potentially improve their outcome.
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Affiliation(s)
- Tommaso Lupia
- Unit of Infectious Diseases, Cardinal Massaia, 14100 Asti, Italy
| | - Silvia Corcione
- Department of Medical Sciences, Infectious Diseases, University of Turin, 10126 Turin, Italy
- School of Medicine, Tufts University, Boston, MA 02111, USA
- Correspondence: ; Tel.: +39-0141-489974
| | - Nour Shbaklo
- Department of Medical Sciences, Infectious Diseases, University of Turin, 10126 Turin, Italy
| | - Barbara Rizzello
- Department of Medical Sciences, Infectious Diseases, University of Turin, 10126 Turin, Italy
| | - Ilaria De Benedetto
- Department of Medical Sciences, Infectious Diseases, University of Turin, 10126 Turin, Italy
| | - Erika Concialdi
- Microbiology Unit, Cardinal Massaia Hospital, 14100 Asti, Italy
| | | | - Maurizio Penna
- Microbiology Unit, Cardinal Massaia Hospital, 14100 Asti, Italy
| | | | - Francesco Giuseppe De Rosa
- Unit of Infectious Diseases, Cardinal Massaia, 14100 Asti, Italy
- Department of Medical Sciences, Infectious Diseases, University of Turin, 10126 Turin, Italy
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Legionnaires' disease presenting with exanthem; Case and review of previously published cases. IDCases 2022; 27:e01376. [PMID: 35028294 PMCID: PMC8739871 DOI: 10.1016/j.idcr.2022.e01376] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 01/02/2022] [Indexed: 11/22/2022] Open
Abstract
Infection with Legionella spp. (legionellosis) causes two distinct clinical presentations: Legionnaires’ Disease and Pontiac Fever. Legionnaire’s Disease primarily involves the lungs, often with accompanying gastrointestinal symptoms, and can also affect the liver, central nervous system, and kidneys, and cause metabolic derangements. Manifestations in the integumentary system are rare; to date, there have been eleven cases reported in the literature of Legionellosis with associated rash, with varied presentation. The relationship between Legionella pneumophila and the skin has not yet been clearly defined; immunological and/or toxic pathogenesis are possible. We report a case of Legionnaires’ Disease in a young immunocompromised man with a largely benign clinical course consisting of predominantly gastrointestinal symptoms and an extensive maculopapular rash. Chest radiography showed lobar infiltrate in the absence of clinical symptoms of pneumonia. The importance of this case is for clinicians to maintain high clinical suspicion for Legionella when extra-pulmonary symptoms predominate, specifically in immunocompromised hosts who may have atypical presentations and have higher mortality rates when treatment is delayed.
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Abstract
OBJECTIVES: Few studies have reported the complications and outcomes of patients with Legionella pneumonia requiring ICU admission. The objective of our study is to report the clinical course, complications, and 30-day mortality of patients with Legionella pneumonia admitted to the critical care units at our medical center over a 10-year period. DESIGN: Retrospective observational study. SETTING: Tertiary care teaching hospital. PATIENTS: All adult (≥ 18 yr old) patients with Legionella pneumonia admitted to the ICUs from January 1, 2010, to December 31, 2019. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: A total of 88 patients with Legionella pneumonia were admitted to ICUs over the 10-year period. The majority of infections (n = 80; 90.9%) were community acquired. The median (interquartile range) age of patients was 60 years (51.5–71.0 yr); 58 (66%) were male, and 41 (46.6%) identified their race as Black. The median (interquartile range) Sequential Organ Failure Assessment score at ICU admission was 6 (3–9). The distribution of infections showed seasonal dominance with most cases (86%) occurring in the summer to early fall (May to October). Invasive mechanical ventilation was required in 62 patients (70.5%), septic shock developed in 57 patients (64.8%), and acute respiratory distress syndrome developed in 42 patients (47.7%). A majority of patients developed acute kidney injury (n = 69; 78.4%), with 15 (21.7%) receiving only intermittent hemodialysis and 15 (21.7%) requiring continuous renal replacement therapy. Ten patients required venovenous extracorporeal membrane oxygenation support; eight (80%) survived and were successfully decannulated. Overall 30-day mortality was 26.1% (n = 23). Advanced age, higher Sequential Organ Failure Assessment score at admission, and not receiving Legionella-specific antimicrobial therapy within 24 hours of hospital admission were predictors of 30-day mortality. CONCLUSIONS: Patients with Legionella pneumonia may require ICU admission and major organ support. Legionella-targeted antibiotics should be included in the empiric regimen for any patient with severe pneumonia. Outcomes of extracorporeal membrane oxygenation therapy in this population are encouraging.
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Ectopic Expression of Human Thymosin β4 Confers Resistance to Legionella pneumophila during Pulmonary and Systemic Infection in Mice. Infect Immun 2021; 89:IAI.00735-20. [PMID: 33468581 DOI: 10.1128/iai.00735-20] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 12/23/2020] [Indexed: 11/20/2022] Open
Abstract
Thymosin beta-4 (Tβ4) is an actin-sequestering peptide that plays important roles in regeneration and remodeling of injured tissues. However, its function in a naturally occurring pathogenic bacterial infection model has remained elusive. We adopted Tβ4-overexpressing transgenic (Tg) mice to investigate the role of Tβ4 in acute pulmonary infection and systemic sepsis caused by Legionella pneumophila Upon infection, Tβ4-Tg mice demonstrated significantly lower bacterial loads in the lung, less hyaline membranes and necrotic abscess, with lower interstitial infiltration of neutrophils, CD4+, and CD8+ T cells. Bronchoalveolar lavage fluid of Tβ4-Tg mice possessed higher bactericidal activity against exogenously added L. pneumophila, suggesting that constitutive expression of Tβ4 could efficiently control L. pneumophila Furthermore, qPCR analysis of lung homogenates demonstrated significant reduction of interleukin 1 beta (IL-1β) and tumor necrosis factor alpha (TNF-α), which primarily originate from lung macrophages, in Tβ4-Tg mice after pulmonary infection. Upon L. pneumophila challenge of bone marrow-derived macrophages (BMDM) in vitro, secretion of IL-1β and TNF-α proteins was also reduced in Tβ4-Tg macrophages, without affecting their survival. The anti-inflammatory effects of BMDM in Tβ4-Tg mice on each cytokine were affected when triggering with tlr2, tlr4, tlr5, or tlr9 ligands, suggesting that anti-inflammatory effects of Tβ4 are likely mediated by the reduced activation of Toll-like receptors (TLR). Finally, Tβ4-Tg mice in a systemic sepsis model were protected from L. pneumophila-induced lethality compared to wild-type controls. Therefore, Tβ4 confers effective resistance against L. pneumophila via two pathways, a bactericidal and an anti-inflammatory pathway, which can be harnessed to treat acute pneumonia and septic conditions caused by L. pneumophila in humans.
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Su G, Iwagami M, Qin X, McDonald H, Liu X, Carrero JJ, Stålsby Lundborg C, Nitsch D. Kidney disease and mortality in patients with respiratory tract infections: a systematic review and meta-analysis. Clin Kidney J 2021; 14:602-611. [PMID: 33623685 PMCID: PMC7886553 DOI: 10.1093/ckj/sfz188] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 11/21/2019] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Respiratory tract infections (RTIs) are a common reason for people to seek medical care. RTIs are associated with high short-term mortality. Inconsistent evidence exists in the association between the presence of kidney disease and the risk of death in patient with RTIs. METHODS We searched the PubMed, Cochrane Library and Embase databases from inception through April 2019 for cohort and case-control studies investigating the presence of kidney disease (defined as medical diagnosis of kidney disease, reduced estimated glomerular filtration rate or creatinine clearance, elevated serum creatinine and proteinuria) on mortality in adults with RTIs in different settings including community, inpatient and intensive care units. We assessed the quality of the included studies using Cochrane Collaboration's tool and conducted a meta-analysis on the relative risk (RR) of death. RESULTS Of 5362 records identified, 18 studies involving 16 676 participants met the inclusion criteria, with 15 studies investigating pneumonia and 3 studies exploring influenza. The risk of bias in the available evidence was moderate. Most [17/18 (94.5%)] of studies reported positive associations of underlying chronic kidney disease with mortality. The pooled adjusted risk for all-cause mortality in patients with RTIs almost doubled [RR 1.96 (95% confidence interval 1.48-2.59)] in patients with kidney disease. Associations were consistent across different timings of kidney disease assessment and provenances of RTIs (community-acquired or healthcare-associated). CONCLUSIONS The presence of kidney disease is associated with higher mortality among people with RTIs, especially in those with pneumonia. The presence of kidney disease might be taken into account when considering admission for patients who present with RTIs.
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Affiliation(s)
- Guobin Su
- National Clinical Research Center for Kidney Disease, State Key Laboratory of Organ Failure Research, Department of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou City, China
- Department of Nephrology, Guangdong Provincial Hospital of Chinese Medicine, Second Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou City, China
- Health Systems and Policy, Department of Global Public Health, Karolinska Institutet, Stockholm, Sweden
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Masao Iwagami
- Department of Non-Communicable Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK
- Department of Health Services Research, University of Tsukuba, Ibaraki, Japan
| | - Xindong Qin
- Department of Nephrology, Guangdong Provincial Hospital of Chinese Medicine, Second Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou City, China
| | - Helen McDonald
- Department of Non-Communicable Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK
| | - Xusheng Liu
- Department of Nephrology, Guangdong Provincial Hospital of Chinese Medicine, Second Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou City, China
| | - Juan Jesus Carrero
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Cecilia Stålsby Lundborg
- Health Systems and Policy, Department of Global Public Health, Karolinska Institutet, Stockholm, Sweden
| | - Dorothea Nitsch
- Department of Non-Communicable Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK
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Dagan A, Epstein D, Mahagneh A, Nashashibi J, Geffen Y, Neuberger A, Miller A. Community-acquired versus nosocomial Legionella pneumonia: factors associated with Legionella-related mortality. Eur J Clin Microbiol Infect Dis 2021; 40:1419-1426. [PMID: 33527200 DOI: 10.1007/s10096-021-04172-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 01/24/2021] [Indexed: 12/20/2022]
Abstract
Over the past decade, changes in the diagnosis and management of Legionella pneumonia occurred and risk factors for severe infection and increased mortality were identified. Previous reports found that nosocomial infection is associated with higher mortality while others showed no differences. We aimed to evaluate the differences in the clinical course and mortality rates between hospital-acquired pneumonia (HAP) and community-acquired pneumonia (CAP) caused by Legionella pneumophila. A retrospective cohort study of patients admitted due to Legionella pneumonia between January 2012 through November 2019 was conducted in a tertiary referral center (Rambam Health Care Campus, Haifa, Israel). The primary outcome was 30-day Legionella pneumonia-related mortality. A multivariable logistic regression was performed to determine whether a nosocomial infection is an independent predictor of mortality. One hundred nine patients were included. Seventy (64.2%) had CAP and 39 (35.8%) had HAP. The groups were comparable regarding age, gender, and comorbidities. Time to diagnosis was longer and the number of patients receiving initial empiric anti-Legionella spp. treatment was smaller in the HAP group (8 days [IQR 5.5-12.5] vs. 5 days [IQR 3-8], p < 0.001 and 65.5% vs. 78.6%, p = 0.003, respectively). Patients with HAP had higher 30-day mortality, 41% vs. 18.6%, p = 0.02. In a multivariable logistic regression model, only pneumonia severity index and nosocomial source were independently associated with increased mortality. HAP caused by Legionella spp. is independently associated with increased mortality when compared to CAP caused by the same pathogen. The possible reasons for this increased mortality include late diagnosis and delayed initiation of appropriate treatment.
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Affiliation(s)
- Avner Dagan
- Department of Internal Medicine "B", Rambam Health Care Campus, Haifa, Israel
| | - Danny Epstein
- Critical Care Division, Rambam Health Care Campus, HaAliya HaShniya St. 8, 3109601, Haifa, Israel.
| | - Ahmad Mahagneh
- Department of Diagnostic Imaging, Rambam Health Care Center, Haifa, Israel
| | - Jeries Nashashibi
- Department of Internal Medicine "D", Rambam Health Care Campus, Haifa, Israel
| | - Yuval Geffen
- Clinical Microbiology Laboratory, Rambam Health Care Campus, Haifa, Israel
| | - Ami Neuberger
- Department of Internal Medicine "B", Rambam Health Care Campus, Haifa, Israel.,Infectious Diseases Unit, Rambam Health Care Campus, Haifa, Israel.,Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Asaf Miller
- Medical Intensive Care Unit, Rambam Health Care Campus, Haifa, Israel
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Frontera JA, Valdes E, Huang J, Lewis A, Lord AS, Zhou T, Kahn DE, Melmed K, Czeisler BM, Yaghi S, Scher E, Wisniewski T, Balcer L, Hammer E. Prevalence and Impact of Hyponatremia in Patients With Coronavirus Disease 2019 in New York City. Crit Care Med 2020; 48:e1211-e1217. [PMID: 32826430 PMCID: PMC7467047 DOI: 10.1097/ccm.0000000000004605] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
OBJECTIVES Hyponatremia occurs in up to 30% of patients with pneumonia and is associated with increased morbidity and mortality. The prevalence of hyponatremia associated with coronavirus disease 2019 and the impact on outcome is unknown. We aimed to identify the prevalence, predictors, and impact on outcome of mild, moderate, and severe admission hyponatremia compared with normonatremia among coronavirus disease 2019 patients. DESIGN Retrospective, multicenter, observational cohort study. SETTING Four New York City hospitals that are part of the same health network. PATIENTS Hospitalized, laboratory-confirmed adult coronavirus disease 2019 patients admitted between March 1, 2020, and May 13, 2020. INTERVENTIONS None. MEASUREMENTS AND MAIN RESULTS Hyponatremia was categorized as mild (sodium: 130-134 mmol/L), moderate (sodium: 121-129 mmol/L), or severe (sodium: ≤ 120 mmol/L) versus normonatremia (135-145 mmol/L). The primary outcome was the association of increasing severity of hyponatremia and in-hospital mortality assessed using multivariable logistic regression analysis. Secondary outcomes included encephalopathy, acute renal failure, mechanical ventilation, and discharge home compared across sodium levels using Kruskal-Wallis and chi-square tests. In exploratory analysis, the association of sodium levels and interleukin-6 levels (which has been linked to nonosmotic release of vasopressin) was assessed. Among 4,645 patient encounters, hyponatremia (sodium < 135 mmol/L) occurred in 1,373 (30%) and 374 of 1,373 (27%) required invasive mechanical ventilation. Mild, moderate, and severe hyponatremia occurred in 1,032 (22%), 305 (7%), and 36 (1%) patients, respectively. Each level of worsening hyponatremia conferred 43% increased odds of in-hospital death after adjusting for age, gender, race, body mass index, past medical history, admission laboratory abnormalities, admission Sequential Organ Failure Assessment score, renal failure, encephalopathy, and mechanical ventilation (adjusted odds ratio, 1.43; 95% CI, 1.08-1.88; p = 0.012). Increasing severity of hyponatremia was associated with encephalopathy, mechanical ventilation, and decreased probability of discharge home (all p < 0.001). Higher interleukin-6 levels correlated with lower sodium levels (p = 0.017). CONCLUSIONS Hyponatremia occurred in nearly a third of coronavirus disease 2019 patients, was an independent predictor of in-hospital mortality, and was associated with increased risk of encephalopathy and mechanical ventilation.
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Affiliation(s)
| | - Eduard Valdes
- Department of Neurology, NYU Grossman School of Medicine, New York, NY
| | - Joshua Huang
- Department of Medical Center Information Technology, NYU Grossman School of Medicine, New York, NY
| | - Ariane Lewis
- Department of Neurology, NYU Grossman School of Medicine, New York, NY
| | - Aaron S. Lord
- Department of Neurology, NYU Grossman School of Medicine, New York, NY
| | - Ting Zhou
- Department of Neurology, NYU Grossman School of Medicine, New York, NY
| | - D. Ethan Kahn
- Department of Neurology, NYU Grossman School of Medicine, New York, NY
| | - Kara Melmed
- Department of Neurology, NYU Grossman School of Medicine, New York, NY
| | - Barry M. Czeisler
- Department of Neurology, NYU Grossman School of Medicine, New York, NY
| | - Shadi Yaghi
- Department of Neurology, NYU Grossman School of Medicine, New York, NY
| | - Erica Scher
- Department of Neurology, NYU Grossman School of Medicine, New York, NY
| | - Thomas Wisniewski
- Department of Neurology, NYU Grossman School of Medicine, New York, NY
- Department of Pathology, NYU Grossman School of Medicine, New York, NY
- Department of Psychiatry, NYU Grossman School of Medicine, New York, NY
| | - Laura Balcer
- Department of Neurology, NYU Grossman School of Medicine, New York, NY
| | - Elizabeth Hammer
- Department of Medicine, NYU Grossman School of Medicine, New York, NY
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Cuesta M, Slattery D, Goulden EL, Gupta S, Tatro E, Sherlock M, Tormey W, O'Neill S, Thompson CJ. Hyponatraemia in patients with community-acquired pneumonia; prevalence and aetiology, and natural history of SIAD. Clin Endocrinol (Oxf) 2019; 90:744-752. [PMID: 30657193 DOI: 10.1111/cen.13937] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2018] [Revised: 12/07/2018] [Accepted: 01/11/2019] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Hyponatraemia is common in community-acquired pneumonia (CAP) and is associated with increased mortality. The mechanism of hyponatraemia in CAP is not completely understood and treatment is therefore ill-defined. We aimed to define the causation of hyponatraemia in CAP. DESIGN Prospective, single-centre, observational study of all patients with CAP and hyponatraemia (≤ 130 mmol/L) during a 9-month period. PATIENTS The prevalence of each subtype of hyponatraemia, and the associated mortality, was determined in 143 admissions with CAP (Study 1). A sub-cohort of patients with SIAD (n = 10) was prospectively followed, to document the natural history of SIAD associated with CAP (Study 2). MEASUREMENTS In Study 2, blood and urine were collected on day 1, 3, 5 and 7 following admission for measurement of plasma vasopressin, sodium, osmolality and urine osmolality. RESULTS In study 1, 143/1723(8.3%) of CAP patients had hyponatraemia (≤130 mmol/L). About 66 had SIAD (46%), 60(42%) had hypovolaemic hyponatraemia (HON), 13(9%) had hypervolaemic hyponatraemia (HEN) and 4(3%) patients had hyponatraemia due to glucocorticoid hormone deficiency. Mortality was higher in the HEN than in the HON, SIAD or normonatraemic groups (P < 0.01). In Study 2, plasma sodium concentration normalized in 8/10 (80%) by day 7. Two patients with persistent hyponatraemia were discovered to have underlying bronchiectasis. CONCLUSIONS Hyponatraemia in CAP is most commonly secondary to SIAD or hypovolaemia. HEN is less common, but has worse prognosis. Prospective observation demonstrates that in SIAD, plasma AVP and sodium concentrations normalize with antimicrobials; failure of reversal of suggests underlying lung disease, such as bronchiectasis.
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Affiliation(s)
- Martin Cuesta
- Academic Department of Endocrinology, Beaumont Hospital/RCSI Medical School, Dublin, Ireland
| | - David Slattery
- Academic Department of Endocrinology, Beaumont Hospital/RCSI Medical School, Dublin, Ireland
| | - Eirena L Goulden
- Academic Department of Endocrinology, Beaumont Hospital/RCSI Medical School, Dublin, Ireland
| | - Saket Gupta
- Academic Department of Endocrinology, Beaumont Hospital/RCSI Medical School, Dublin, Ireland
| | - Elizabeth Tatro
- Academic Department of Endocrinology, Beaumont Hospital/RCSI Medical School, Dublin, Ireland
| | - Mark Sherlock
- Academic Department of Endocrinology, Beaumont Hospital/RCSI Medical School, Dublin, Ireland
| | - William Tormey
- Academic Department of Chemical Pathology, Beaumont Hospital/RCSI Medical School, Dublin, Ireland
| | - Shane O'Neill
- Academic Department of Respiratory Medicine, Beaumont Hospital/RCSI Medical School, Dublin, Ireland
| | - Christopher J Thompson
- Academic Department of Endocrinology, Beaumont Hospital/RCSI Medical School, Dublin, Ireland
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15
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Cecchini J, Tuffet S, Sonneville R, Fartoukh M, Mayaux J, Roux D, Kouatchet A, Boissier F, Tchir M, Thyrault M, Maury E, Jochmans S, Mekontso Dessap A, Brun-Buisson C, de Prost N. Antimicrobial strategy for severe community-acquired legionnaires' disease: a multicentre retrospective observational study. J Antimicrob Chemother 2018; 72:1502-1509. [PMID: 28204479 DOI: 10.1093/jac/dkx007] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Accepted: 01/03/2017] [Indexed: 11/15/2022] Open
Abstract
Background Legionnaires' disease (LD) is an important cause of community-acquired pneumonia with high mortality rates in the most severe cases. Objectives To evaluate the effect of antimicrobial strategy on ICU mortality. Methods Retrospective, observational study including patients admitted to 10 ICUs for severe community-acquired LD over a 10 year period (2005-15) and receiving an active therapy within 48 h of admission . Patients were stratified according to the antibiotic strategy administered: (i) fluoroquinolone-based versus non-fluoroquinolone-based therapy; and (ii) monotherapy versus combination therapy. The primary endpoint was in-ICU mortality. A multivariable Cox model and propensity score analyses were used. Results Two hundred and eleven patients with severe LD were included. A fluoroquinolone-based and a combination therapy were administered to 159 (75%) and 123 (58%) patients, respectively. One hundred and forty-six patients (69%) developed acute respiratory distress syndrome and 54 (26%) died in the ICU. In-ICU mortality was lower in the fluoroquinolone-based than in the non-fluoroquinolone-based group (21% versus 39%, P = 0.01), and in the combination therapy than in the monotherapy group (20% versus 34%, P = 0.02). In multivariable analysis, a fluoroquinolone-based therapy, but not a combination therapy, was associated with a reduced risk of mortality [HR = 0.41, 95% CI 0.19-0.89; P = 0.02]. Conclusions Patients with severe LD receiving a fluoroquinolone-based antimicrobial regimen in the early course of management had a lower in-ICU mortality, which persisted after adjusting for significant covariates.
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Affiliation(s)
- Jérôme Cecchini
- AP-HP, Groupe Hospitalier Henri Mondor-Albert Chenevier, Service de Réanimation Médicale, Créteil, France.,Institut Mondor de Recherche Biomédicale-Groupe de Recherche Clinique CARMAS, Université Paris Est, 94000 Créteil, France
| | - Samuel Tuffet
- AP-HP, Groupe Hospitalier Henri Mondor-Albert Chenevier, Service de Réanimation Médicale, Créteil, France
| | - Romain Sonneville
- AP-HP, Hôpital Bichat, Service de Réanimation Médicale et Infectieuse, Paris, France
| | - Muriel Fartoukh
- Institut Mondor de Recherche Biomédicale-Groupe de Recherche Clinique CARMAS, Université Paris Est, 94000 Créteil, France.,AP-HP, Hôpital Tenon, Unité de Réanimation Médico-Chirurgicale, Groupe Hospitalier des Hôpitaux Universitaires de l'Est Parisien, Paris, France.,Sorbonne Université, UPMC Université Paris 06, Paris, France
| | - Julien Mayaux
- AP-HP, Groupe Hospitalier Pitié-Salpêtrière Charles Foix, Service de Pneumologie et Réanimation Médicale, Paris, France
| | - Damien Roux
- AP-HP, Hôpital Louis Mourier, Service de Réanimation Médico-Chirurgicale, Colombes, France
| | - Achille Kouatchet
- Hôpital Angers, Service de Réanimation Médicale et Médecine Hyperbare, Angers, France
| | - Florence Boissier
- AP-HP, Hôpital Européen Georges Pompidou, Service de Réanimation Médicale, Paris, France
| | - Martial Tchir
- Institut Mondor de Recherche Biomédicale-Groupe de Recherche Clinique CARMAS, Université Paris Est, 94000 Créteil, France.,Centre Hospitalier Intercommunal de Villeneuve Saint-Georges, Service de Réanimation Polyvalente, Villeneuve Saint-Georges, France
| | - Martial Thyrault
- Centre Hospitalier de Longjumeau, Service de Réanimation Médicale et Chirurgicale, Longjumeau, France
| | - Eric Maury
- AP-HP, Hôpital Saint-Antoine, Service de Réanimation Médicale, Groupe Hospitalier des Hôpitaux Universitaires de l'Est Parisien, Paris, France
| | - Sebastien Jochmans
- Institut Mondor de Recherche Biomédicale-Groupe de Recherche Clinique CARMAS, Université Paris Est, 94000 Créteil, France.,Hôpital Marc Jacquet, Service de Médecine Intensive, Melun, France
| | - Armand Mekontso Dessap
- AP-HP, Groupe Hospitalier Henri Mondor-Albert Chenevier, Service de Réanimation Médicale, Créteil, France.,Institut Mondor de Recherche Biomédicale-Groupe de Recherche Clinique CARMAS, Université Paris Est, 94000 Créteil, France
| | - Christian Brun-Buisson
- AP-HP, Groupe Hospitalier Henri Mondor-Albert Chenevier, Service de Réanimation Médicale, Créteil, France.,Institut Mondor de Recherche Biomédicale-Groupe de Recherche Clinique CARMAS, Université Paris Est, 94000 Créteil, France
| | - Nicolas de Prost
- AP-HP, Groupe Hospitalier Henri Mondor-Albert Chenevier, Service de Réanimation Médicale, Créteil, France.,Institut Mondor de Recherche Biomédicale-Groupe de Recherche Clinique CARMAS, Université Paris Est, 94000 Créteil, France
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Legionnaires' Disease Complicated with Rhabdomyolysis and Acute Kidney Injury in an AIDS Patient. Case Rep Infect Dis 2017; 2017:8051096. [PMID: 29109879 PMCID: PMC5646314 DOI: 10.1155/2017/8051096] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 08/22/2017] [Accepted: 09/05/2017] [Indexed: 12/19/2022] Open
Abstract
Objective To present a case of an uncommon triad of Legionella pneumonia, rhabdomyolysis, and renal failure, with review of the relevant literature. Case A 51-year-old with a history of human immunodeficiency virus (HIV), chronic obstructive pulmonary disease (COPD), and hypertension presented with fever, cough, and shortness of breath over four days. Chest X-ray showed consolidation in left lower lung field; urine was positive for Legionella antigen and myoglobin; creatine kinase was 51092U/L; creatine was 6.9 mg/dL, and his CD4 count was 41 cells/ul. He was managed with azithromycin and levofloxacin and further required dialysis and ventilatory support in the intensive care unit due to renal failure and respiratory failure. He responded well to the treatment and made a complete recovery. Legionella pneumophila infection is a recognized but rare cause of rhabdomyolysis with high morbidity and mortality when there is extrapulmonary involvement. Early diagnosis and appropriate treatment is essential to improve outcomes. Conclusion Physicians should consider Legionella pneumonia in patients with rhabdomyolysis, renal failure, and respiratory symptoms. Early diagnosis and treatment have been shown to have good clinical response. Timely intensive care management, together with early and judicious use of dialysis in patients complicated with rhabdomyolysis and renal failure, may lead to good outcomes.
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Roncon-Albuquerque R, Vilares-Morgado R, van der Heijden GJ, Ferreira-Coimbra J, Mergulhão P, Paiva JA. Outcome and Management of Refractory Respiratory Failure With Timely Extracorporeal Membrane Oxygenation: Single-Center Experience With Legionella Pneumonia. J Intensive Care Med 2017; 34:344-350. [PMID: 28330410 DOI: 10.1177/0885066617700121] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
OBJECTIVE: To analyze the management and outcome of patients with refractory respiratory failure complicating severe Legionella pneumonia rescued with extracorporeal membrane oxygenation (ECMO) in our Center. DESIGN AND SETTING: Observational study of patients with refractory respiratory failure treated with ECMO in Hospital S.João (Porto, Portugal), between November 2009 and September 2016. PARTICIPANTS: A total of 112 patients rescued with ECMO, of which 14 had Legionella pneumonia. RESULTS: Patients with Legionella pneumonia were slightly older than patients with acute respiratory failure of other etiologies (51 [48-56] vs 45 [35-54]), but with no significant differences in acute respiratory failure severity between groups: Pao2/Fio2 ratio 67 (60-75) versus 69 (55-85) and Respiratory Extracorporeal Membrane Oxygenation Survival Prediction score 4 (1-5) versus 2 (-1-4), respectively. Legionella pneumonia was associated with earlier ECMO initiation (days of invasive mechanical ventilation [IMV] before ECMO: 2.0 [1.0-4.0] vs 5.0 [2.0-9.5]). After IMV adjustment to "lung rest" settings, this group presented higher respiratory system (RS) static compliance (28.7 [18.8-37.4] vs 16.0 [10.0-20.8] mL/cmH2O) but required higher ECMO support (blood flow 5.0 [4.3-5.4] vs 4.2 [3.6-4.8]). Patients with Legionella pneumonia had shorter IMV (16 [14-23] vs 27 [20-42] days) and lower incidence of intensive care unit nosocomial infections (35.7% vs 64.3%), with a trend to higher hospital survival (85.7% vs 62.2%; P = .13). CONCLUSION: In Legionella pneumonia complicated by refractory respiratory failure, ECMO support allowed patient stabilization under lung protective ventilation and high survival rates. Timely ECMO referral should be considered for Legionella pneumonia failing conventional treatment.
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Affiliation(s)
- Roberto Roncon-Albuquerque
- 1 Department of Emergency and Intensive Care Medicine, Centro Hospitalar S.João, Porto, Portugal.,2 Department of Physiology and Cardiothoracic Surgery, Faculty of Medicine of Porto, Porto, Portugal
| | - Rodrigo Vilares-Morgado
- 2 Department of Physiology and Cardiothoracic Surgery, Faculty of Medicine of Porto, Porto, Portugal
| | - Gert-Jan van der Heijden
- 3 Department of Internal Medicine, Centro Hospitalar Póvoa de Varzim, Vila do Conde, Póvoa de Varzim, Portugal
| | | | - Paulo Mergulhão
- 1 Department of Emergency and Intensive Care Medicine, Centro Hospitalar S.João, Porto, Portugal
| | - José Artur Paiva
- 1 Department of Emergency and Intensive Care Medicine, Centro Hospitalar S.João, Porto, Portugal.,5 Department of Medicine, Faculty of Medicine of Porto, Porto, Portugal
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Zimmerman L. Pulmonary Complications of Endocrine Diseases. MURRAY AND NADEL'S TEXTBOOK OF RESPIRATORY MEDICINE 2016. [PMCID: PMC7152263 DOI: 10.1016/b978-1-4557-3383-5.00095-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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19
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Moscatelli A, Buratti S, Castagnola E, Mesini A, Tuo P. Severe Neonatal Legionella Pneumonia: Full Recovery After Extracorporeal Life Support. Pediatrics 2015; 136:e1043-6. [PMID: 26391934 DOI: 10.1542/peds.2014-3291] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/02/2015] [Indexed: 11/24/2022] Open
Abstract
Legionella pneumophila is responsible for hospital or community-acquired pneumonia. Neonatal legionellosis is associated with rapidly severe clinical course and high mortality rates. We describe a case of hospital-acquired Legionella pneumonia in a newborn with undiagnosed tracheoesophageal fistula and acute respiratory failure requiring venovenous extracorporeal membrane oxygenation support before fistula repair. Standardized multiplex polymerase chain reaction assay allowed early diagnosis. Extracorporeal life support associated with appropriate antibiotic therapy, surfactant, and steroid therapy was effective in achieving complete recovery. This is the first report of successful neonatal extracorporeal life support for respiratory failure secondary to L pneumophila.
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Affiliation(s)
- Andrea Moscatelli
- Neonatal and Pediatric ICU, Critical Care and Perinatal Medicine Department, and
| | - Silvia Buratti
- Neonatal and Pediatric ICU, Critical Care and Perinatal Medicine Department, and
| | - Elio Castagnola
- Infectious Diseases Unit, Istituto Giannina Gaslini, Genova, Italy; and
| | - Alessio Mesini
- Infectious Diseases Unit, University of Genoa and Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Aziendfa Ospedaliera Universitaria San Martino-IST (Istituto Nazionale per la Ricerca sul Cancro), Genova, Italy
| | - Pietro Tuo
- Neonatal and Pediatric ICU, Critical Care and Perinatal Medicine Department, and
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Marzouk M, Boukadida A, Chouchene I, Ferjani A, Hannachi N, Besbes M, Bouchoucha S, Boukadida J. Analyse des cas de légionellose grave hospitalisés dans les services de réanimation en Tunisie. ACTA ACUST UNITED AC 2015; 108:191-6. [DOI: 10.1007/s13149-014-0414-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Accepted: 10/30/2014] [Indexed: 11/29/2022]
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De Rosa FG, Fanelli V, Corcione S, Urbino R, Bonetto C, Ricci D, Rinaldi M, Di Perri G, Bonora S, Ranieri MV. Extra Corporeal Membrane Oxygenation (ECMO) in three HIV-positive patients with acute respiratory distress syndrome. BMC Anesthesiol 2014; 14:37. [PMID: 24932132 PMCID: PMC4057620 DOI: 10.1186/1471-2253-14-37] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2013] [Accepted: 05/06/2014] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Extracorporeal membrane oxygenation (ECMO) is a life-saving bridging procedure in patients with severe acute respiratory distress syndrome (ARDS). Official indications for ECMO are unclear for immunocompromised and HIV-positive patients affected by severe hypoxemia. Uncertainties are related to prognosis and efficacy of treatment of the underlying disease. However, the care of patients with HIV infection has advanced since the introduction of highly active antiretroviral therapy (HAART), with increased life expectancy and decreased mortality. CASE PRESENTATION Three HIV-infected patients with AIDS were admitted to ICU and were treated with ECMO: a 21 years old Caucasian female with congenital HIV infection presented with Pneumocystis jirovecii pneumonia (PJP); a 38 years old Caucasian female with HIV-HCV infection and L. pneumophila pneumonia; a 24 years old Caucasian male with fever, cough weight loss and PJP pneumonia. Two patients were alive, with a good immunovirological profile and they went back to their previous quality of life. The last patient died with septic shock after three months of ICU stay. CONCLUSION ECMO was effective in three HIV-positive patients with an otherwise fatal respiratory failure. All patients had severe immunosuppression and/or limited antiretroviral options. A multidisciplinary critical team is needed to individualize the use of ECMO in immunocompromised patients, including those with HIV infection.
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Affiliation(s)
- Francesco Giuseppe De Rosa
- Department of Medical Sciences, University of Turin, Infectious Diseases at Amedeo di Savoia Hospital, Corso Svizzera 164, 10149 Turin, Italy
| | - Vito Fanelli
- Department of Surgical Sciences, University of Turin, City of Health and Science, Molinette Hospital, C.so Dogliotti 14, 10126 Turin, Italy
| | - Silvia Corcione
- Department of Medical Sciences, University of Turin, Infectious Diseases at Amedeo di Savoia Hospital, Corso Svizzera 164, 10149 Turin, Italy
| | - Rosario Urbino
- Department of Surgical Sciences, University of Turin, City of Health and Science, Molinette Hospital, C.so Dogliotti 14, 10126 Turin, Italy
| | - Chiara Bonetto
- Department of Surgical Sciences, University of Turin, City of Health and Science, Molinette Hospital, C.so Dogliotti 14, 10126 Turin, Italy
| | - Davide Ricci
- Department of Surgical Sciences, Cardiosurgery Unit, University of Turin, City of Health and Science, Molinette Hospital, C.so Dogliotti 14, 10126 Turin, Italy
| | - Mauro Rinaldi
- Department of Surgical Sciences, Cardiosurgery Unit, University of Turin, City of Health and Science, Molinette Hospital, C.so Dogliotti 14, 10126 Turin, Italy
| | - Giovanni Di Perri
- Department of Medical Sciences, University of Turin, Infectious Diseases at Amedeo di Savoia Hospital, Corso Svizzera 164, 10149 Turin, Italy
| | - Stefano Bonora
- Department of Medical Sciences, University of Turin, Infectious Diseases at Amedeo di Savoia Hospital, Corso Svizzera 164, 10149 Turin, Italy
| | - Marco V Ranieri
- Department of Surgical Sciences, University of Turin, City of Health and Science, Molinette Hospital, C.so Dogliotti 14, 10126 Turin, Italy
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Burdet C, Lepeule R, Duval X, Caseris M, Rioux C, Lucet JC, Yazdanpanah Y. Quinolones versus macrolides in the treatment of legionellosis: a systematic review and meta-analysis. J Antimicrob Chemother 2014; 69:2354-60. [PMID: 24827889 DOI: 10.1093/jac/dku159] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Legionellosis is a life-threatening disease. The clinical superiority of quinolones or macrolides for treating patients with legionellosis has not been established. METHODS We performed a systematic review and meta-analysis of studies reporting data that allowed the comparison of quinolones versus macrolides in the treatment of proven legionellosis published from 1 January 1985 to 31 January 2013. We collected baseline aggregate patient characteristics. Studied outcomes included mortality, clinical cure, time to apyrexia, length of hospital stay and occurrence of complications in each treatment group. Treatment effect was assessed using a Mantel-Haenszel random effects model. RESULTS Among 1005 abstracts reviewed, 12 studies were selected (n=879 patients). No randomized controlled trial was performed directly comparing quinolone and macrolide efficacy in legionellosis. Mean age was 58.3 years, 27.7% were women and Fine score was ≥ 4 in 35.8%. Among 253 patients who received quinolone monotherapy, 10 died (4.0%). Among 211 patients who received macrolide monotherapy, 23 died (10.9%). The pooled OR of death for treatment with a quinolone versus a macrolide was 0.5 (95% CI 0.2-1.3, n=8 studies, 464 patients). Length of stay was significantly shorter in the quinolone monotherapy group. The difference was 3.0 days (95% CI 0.7-5.3, P=0.001, n=3 studies, 263 patients). Neither of two tests for heterogeneity was significant (I (2)=0% for both, P=1). Other studied outcomes were not significantly different among treatment groups. CONCLUSIONS Few clinical data on legionellosis treatment are available. This first meta-analysis showed a trend toward a lower mortality rate and a significant decrease in length of hospital stay among patients receiving quinolones. These results must be confirmed by a randomized controlled trial.
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Affiliation(s)
- C Burdet
- APHP, Bichat Hospital, Infectious Diseases Department, Paris, France APHP, Bichat Hospital, Biostatistics Department, Paris, France INSERM, IAME, UMR 1137 and Université Paris-Diderot, Paris, France
| | - R Lepeule
- APHP, Beaujon Hospital, Internal Medicine Department, Clichy, France
| | - X Duval
- INSERM, IAME, UMR 1137 and Université Paris-Diderot, Paris, France INSERM CIC 1425, APHP, Bichat Hospital, Paris, France
| | - M Caseris
- APHP, Bichat Hospital, Infectious Diseases Department, Paris, France
| | - C Rioux
- APHP, Bichat Hospital, Infectious Diseases Department, Paris, France
| | - J-C Lucet
- INSERM, IAME, UMR 1137 and Université Paris-Diderot, Paris, France APHP, Bichat Hospital, Infection Control Unit, Paris, France
| | - Y Yazdanpanah
- APHP, Bichat Hospital, Infectious Diseases Department, Paris, France INSERM, IAME, UMR 1137 and Université Paris-Diderot, Paris, France
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Arancibia F, Cortes CP, Valdés M, Cerda J, Hernández A, Soto L, Torres A. Importance of Legionella pneumophila in the etiology of severe community-acquired pneumonia in Santiago, Chile. Chest 2014; 145:290-296. [PMID: 23764871 DOI: 10.1378/chest.13-0162] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
BACKGROUND In US and European literature, Legionella pneumophila is reported as an important etiologic agent of severe community-acquired pneumonia (CAP), but in Chile this information is lacking. The aim of this study was to determine the incidence and identify predictors of severe CAP caused by L pneumophila in Santiago, Chile. METHODS A multicenter, prospective clinical study lasting 18 months was conducted; it included all adult patients with severe CAP admitted to the ICUs of four hospitals in Santiago. We excluded patients who were immunocompromised, had been hospitalized in the previous 4 weeks, or presented with another disease during their hospitalization. All data for the diagnosis of severe CAP were registered, and urinary antigens for L pneumophila serogroup 1 were determined. RESULTS A total of 104 patients with severe CAP were included (mean ± SD age, 58.3 ± 19.3 years; men, 64.4%; APACHE (Acute Physiology and Chronic Health Evaluation) II score, 16.7 ± 6.3; Sepsis-related Organ Failure Assessment score, 6.1 ± 3.2; Pitt Bacteremia Score, 3.4 ± 2.5; Pao2/Fio2, 170.8 ± 87.1). An etiologic agent was identified in 62 patients (59.6%), with the most frequent being Streptococcus pneumoniae (27 patients [26%]) and L pneumophila (nine patients [8.6%]). Logistic regression analysis showed that a plasma sodium level of ≤ 130 mEq/L was an independent predictor for L pneumophila severe CAP (OR, 11.3; 95% CI, 2.5-50.5; P = .002). Global mortality was 26% and 33% for L pneumophila. The Pitt bacteremia score and pneumonia score index were the best predictors of mortality. CONCLUSIONS We found that in Santiago, L pneumophila was second to S pneumoniae as the etiologic agent of severe CAP. Severe hyponatremia at admission appears to be an indicator for L pneumophila etiology in severe CAP.
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Affiliation(s)
- Francisco Arancibia
- Instituto Nacional del Tórax, Santiago, Chile; Clínica Santa María, Santiago, Chile.
| | - Claudia P Cortes
- Instituto Nacional del Tórax, Santiago, Chile; School of Medicine, University of Chile, Santiago, Chile
| | - Marcelo Valdés
- Instituto Nacional del Tórax, Santiago, Chile; Clínica Santa María, Santiago, Chile
| | - Javier Cerda
- Hospital Militar de Santiago, Santiago, Chile; Hospital San Borja-Arriarán, Santiago, Chile
| | | | - Luis Soto
- Instituto Nacional del Tórax, Santiago, Chile
| | - Antoni Torres
- Servei de Pneumologia, Institut del Tórax, Hospital Clínic, Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), Barcelona, Spain; Centro de Investigación Biomedica En Red-Enfermedades Respiratorias (CibeRes, CB06/06/0028)-Instituto de Salud Carlos III, Madrid, Spain
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24
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Corona G, Giuliani C, Parenti G, Norello D, Verbalis JG, Forti G, Maggi M, Peri A. Moderate hyponatremia is associated with increased risk of mortality: evidence from a meta-analysis. PLoS One 2013; 8:e80451. [PMID: 24367479 PMCID: PMC3867320 DOI: 10.1371/journal.pone.0080451] [Citation(s) in RCA: 184] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Accepted: 10/03/2013] [Indexed: 12/13/2022] Open
Abstract
Background Hyponatremia is the most common electrolyte disorder in clinical practice, and evidence to date indicates that severe hyponatremia is associated with increased morbidity and mortality. The aim of our study was to perform a meta-analysis that included the published studies that compared mortality rates in subjects with or without hyponatremia of any degree. Methods and Findings An extensive Medline, Embase and Cochrane search was performed to retrieve the studies published up to October 1st 2012, using the following words: “hyponatremia” and “mortality”. Eighty-one studies satisfied inclusion criteria encompassing a total of 850222 patients, of whom 17.4% were hyponatremic. The identification of relevant abstracts, the selection of studies and the subsequent data extraction were performed independently by two of the authors, and conflicts resolved by a third investigator. Across all 81 studies, hyponatremia was significantly associated with an increased risk of overall mortality (RR = 2.60[2.31–2.93]). Hyponatremia was also associated with an increased risk of mortality in patients with myocardial infarction (RR = 2.83[2.23–3.58]), heart failure (RR = 2.47[2.09–2.92]), cirrhosis (RR = 3.34[1.91–5.83]), pulmonary infections (RR = 2.49[1.44–4.30]), mixed diseases (RR = 2.59[1.97–3.40]), and in hospitalized patients (RR = 2.48[2.09–2.95]). A mean difference of serum [Na+] of 4.8 mmol/L was found in subjects who died compared to survivors (130.1±5.6 vs 134.9±5.1 mmol/L). A meta-regression analysis showed that the hyponatremia-related risk of overall mortality was inversely correlated with serum [Na+]. This association was confirmed in a multiple regression model after adjusting for age, gender, and diabetes mellitus as an associated morbidity. Conclusions This meta-analysis shows for the first time that even a moderate serum [Na+] decrease is associated with an increased risk of mortality in commonly observed clinical conditions across large numbers of patients.
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Affiliation(s)
- Giovanni Corona
- Endocrinology Unit, Maggiore-Bellaria Hospital, Bologna, Italy
| | - Corinna Giuliani
- Endocrine Unit, “Center for Research, Transfer and High Education on Chronic, Inflammatory, Degenerative and Neoplastic Disorders for the Development of Novel Therapies” (DENOThe), Dept. of Experimental and Clinical Biomedical Sciences, University of Florence, Careggi Hospital, Florence, Italy
| | - Gabriele Parenti
- Endocrine Unit, “Center for Research, Transfer and High Education on Chronic, Inflammatory, Degenerative and Neoplastic Disorders for the Development of Novel Therapies” (DENOThe), Dept. of Experimental and Clinical Biomedical Sciences, University of Florence, Careggi Hospital, Florence, Italy
| | - Dario Norello
- Endocrine Unit, “Center for Research, Transfer and High Education on Chronic, Inflammatory, Degenerative and Neoplastic Disorders for the Development of Novel Therapies” (DENOThe), Dept. of Experimental and Clinical Biomedical Sciences, University of Florence, Careggi Hospital, Florence, Italy
| | - Joseph G. Verbalis
- Division of Endocrinology and Metabolism, Georgetown University, Washington, DC, United States of America
| | - Gianni Forti
- Endocrine Unit, “Center for Research, Transfer and High Education on Chronic, Inflammatory, Degenerative and Neoplastic Disorders for the Development of Novel Therapies” (DENOThe), Dept. of Experimental and Clinical Biomedical Sciences, University of Florence, Careggi Hospital, Florence, Italy
| | - Mario Maggi
- Andrology Unit, “Center for Research, Transfer and High Education on Chronic, Inflammatory, Degenerative and Neoplastic Disorders for the Development of Novel Therapies” (DENOThe), Dept. of Experimental and Clinical Biomedical Sciences, University of Florence, Careggi Hospital, Florence, Italy
| | - Alessandro Peri
- Endocrine Unit, “Center for Research, Transfer and High Education on Chronic, Inflammatory, Degenerative and Neoplastic Disorders for the Development of Novel Therapies” (DENOThe), Dept. of Experimental and Clinical Biomedical Sciences, University of Florence, Careggi Hospital, Florence, Italy
- * E-mail:
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25
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St-Martin G, Uldum S, Mølbak K. Incidence and Prognostic Factors for Legionnaires' Disease in Denmark 1993–2006. ACTA ACUST UNITED AC 2013. [DOI: 10.5402/2013/847283] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Objectives. To describe the incidence of Legionnaires’ disease and factors affecting survival in Denmark from 1993 to 2006. Methods. Retrospective register study using data on episodes of Legionnaires’ disease from notification forms and the National Reference Laboratory, and information on comorbidity from national registers on discharge diagnoses and mortality. Results. The average annual incidence of laboratory confirmed cases was 1.5 per 100000 people. The 30-day case fatality was 19%, ranging from 7% in travellers to 37% in hospital-acquired cases. Patients older than 60 years and patients with underlying disease were more likely-to die, as were patients infected with L. pneumophila serogroup 6. The lowest mortality was seen for L. pneumophila serogroup 1. Conclusion. Increased awareness of the disease, better diagnostics, and appropriate testing and treatment strategies are needed to improve survival. In particular, we focus on the relevance of diagnostic methods, such as polymerase chain reaction (PCR), that detect other serogroups than the urinary antigen tests used that will only reliably detect antigen from L. pneumophila serogroup 1. PCR is faster and more sensitive than culture.
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Affiliation(s)
- G. St-Martin
- Department of Epidemiology, Statens Serum Institut, Ørestads Boulevard 5, 2300 Copenhagen S, Denmark
| | - S. Uldum
- Department of Microbiological Surveillance and Research, Statens Serum Institut, Ørestads Boulevard 5, 2300 Copenhagen S, Denmark
| | - K. Mølbak
- Department of Epidemiology, Statens Serum Institut, Ørestads Boulevard 5, 2300 Copenhagen S, Denmark
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Bryner B, Miskulin J, Smith C, Cooley E, Grams R, Bartlett R, Annich G, Mychaliska GB. Extracorporeal life support for acute respiratory distress syndrome due to severe Legionella pneumonia. Perfusion 2013; 29:39-43. [PMID: 23863490 DOI: 10.1177/0267659113497229] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
PURPOSE Legionella is a common cause of community-acquired pneumonia (CAP) and is second only to Pneumococcal pneumonia as a cause of severe CAP that requires treatment in an intensive care unit. We report a case series of patients with severe Legionella pneumonia who developed the acute respiratory distress syndrome (ARDS), failed to improve with mechanical ventilation alone and required extracorporeal life support (ECLS). METHODS We performed a retrospective study of all patients treated with ECLS at our institution for severe ARDS as a result of Legionella pneumonia from 1994 to 2006. RESULTS A total of twelve patients with a diagnosis of Legionella pneumonia were treated with veno-venous (VV) ECLS over this time period. Nine of these twelve (75%) were successfully treated and weaned off ECLS and 8 patients (67%) survived to hospital discharge. Two (13%) died of multisystem organ failure, one patient (8%) died from global hypoxic encephalopathy and one (8%) was weaned from ECLS, but ultimately died of liver failure. Renal failure requiring some form of continuous dialysis occurred in seven patients (58%) and the survival for this sub-set of patients was 43%. CONCLUSIONS Extracorporeal life support for severe ARDS associated with Legionella pneumonia is an effective treatment option when mechanical ventilation fails, especially when introduced early in the course.
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Affiliation(s)
- B Bryner
- 1Department of Surgery, University of Michigan, Ann Arbor, Michigan, USA
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Wingfield T, Rowell S, Peel A, Puli D, Guleri A, Sharma R. Legionella pneumonia cases over a five-year period: a descriptive, retrospective study of outcomes in a UK district hospital. Clin Med (Lond) 2013; 13:152-9. [PMID: 23681863 PMCID: PMC4952631 DOI: 10.7861/clinmedicine.13-2-152] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
As the recent outbreaks in Edinburgh and Camarthen, UK, have shown, Legionella pneumonia (LP) remains a significant public health problem, which is not only confined to those who have travelled abroad. In both outbreaks and sporadic cases, diagnosis can go unrecognised. We reviewed the demographics, comorbidities, diagnosis, treatment and clinical outcome of LP cases over five years in a district general hospital in northwest England. Over half of LP cases were UK acquired and 'classic' clinical features were common. Clinical criteria for diagnosing LP were confirmed, but few sputum samples were sent to reference laboratories, limiting further essential epidemiological mapping of UK cases. Following current UK community-acquired pneumonia guidance would have missed nearly one quarter of LP cases in our series, potentially leading to further morbidity and mortality.
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Affiliation(s)
- Tom Wingfield
- Blackpool Teaching Hospitals NHS Foundation Trust, UK.
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28
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Planquette B, Ferré A, Bédos JP. [The role of atypical microorganisms and viruses in severe acute community-acquired pneumonia]. REANIMATION : JOURNAL DE LA SOCIETE DE REANIMATION DE LANGUE FRANCAISE 2013; 22:3-13. [PMID: 32288730 PMCID: PMC7117816 DOI: 10.1007/s13546-012-0634-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Accepted: 11/21/2012] [Indexed: 11/26/2022]
Abstract
Usually, intensivists do not focus on atypical bacteria and viruses in severe community-acquired pneumonia (CAP). Only Legionella pneumophila and influenza virus, following the recent H1N1 influenza pandemic, are routinely suggested as responsible agents. However, CAP due to atypical bacteria may represent up to 44% of all CAP. Viral CAP is considered less severe than the usual bacterial ones, although 25% of them warrant hospitalization and 15% result in severe sepsis. Even though L. pneumophila is the most frequently atypical pathogen involved in severe cases, Mycoplasma pneumoniae may be responsible for multiorgan failure. To date, tools including detection of Legionella antigen in urine and Mycoplasma using polymerase chain reaction (PCR) allow rapid and accurate diagnosis. The treatment is based on macrolides and fluoroquinolones that can be associated in severe Legionnaire diseases. The presence of virus in CAP, either alone or in association with bacteria, has been demonstrated using molecular biology tests. These techniques also allowed the identification of several new viruses in CAP. However, the exact role of these detected viruses in CAP as well as the efficiency of antiviral therapy still represent major unsolved concerns.
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Affiliation(s)
- B. Planquette
- Service de réanimation médicochirurgicale, centre hospitalier de Versailles, site Mignot, 177, rue de Versailles, F-78150 Le Chesnay, France
| | - A. Ferré
- Service de réanimation médicochirurgicale, centre hospitalier de Versailles, site Mignot, 177, rue de Versailles, F-78150 Le Chesnay, France
| | - J. -P. Bédos
- Service de réanimation médicochirurgicale, centre hospitalier de Versailles, site Mignot, 177, rue de Versailles, F-78150 Le Chesnay, France
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29
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de Castro FR, Torres A. Optimizing Treatment Outcomes in Severe Community-Acquired Pneumonia. ACTA ACUST UNITED AC 2012; 2:39-54. [PMID: 14720021 DOI: 10.1007/bf03256638] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Severe community-acquired pneumonia (CAP) is a life-threatening condition that requires intensive care unit (ICU) admission. Clinical presentation is characterized by the presence of respiratory failure, severe sepsis, or septic shock. Severe CAP accounts for approximately 5-35% of hospital-treated cases of pneumonia with the majority of patients having underlying comorbidities. The most common pathogens associated with this disease are Streptococcus pneumoniae, Legionella spp., Haemophilus influenzae, and Gram-negative enteric rods. Microbial investigation is probably helpful in the individual case but is likely to be more useful for defining local antimicrobial policies. The early and rapid initiation of empiric antimicrobial treatment is critical for a favorable outcome. It should include intravenous beta-lactam along with either a macrolide or a fluoroquinolone. Modifications of this basic regimen should be considered in the presence of distinct comorbid conditions and risk factors for specific pathogens. Other promising nonantimicrobial new therapies are currently being investigated. The assessment of severity of CAP helps physicians to identify patients who could be managed safely in an ambulatory setting. It may also play a crucial role in decisions about length of hospital stay and time of switching to oral antimicrobial therapy in different groups at risk. The most important adverse prognostic factors include advancing age, male sex, poor health of patient, acute respiratory failure, severe sepsis, septic shock, progressive radiographic course, bacteremia, signs of disease progression within the first 48-72 hours, and the presence of several different pathogens such as S. pneumoniae, Staphylococcus aureus, Gram-negative enteric bacilli, or Pseudomonas aeruginosa. However, some important topics of severity assessment remain controversial, including the definition of severe CAP. Prediction rules for complications or death from CAP, although far from perfect, should identify the majority of patients with severe CAP and be used to support decision-making by the physician. They may also contribute to the evaluation of processes and outcomes of care for patients with CAP.
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Affiliation(s)
- Felipe Rodríguez de Castro
- Servicio de Neumología, Hospital Universitario de Gran Canaria "Dr Negrín", Universidad de Las Palmas de Gran Canaria, Las Palmas, Spain
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Rello J, Gattarello S, Souto J, Sole-Violan J, Valles J, Peredo R, Zaragoza R, Vidaur L, Parra A, Roig J. Community-acquired Legionella Pneumonia in the intensive care unit: Impact on survival of combined antibiotic therapy. Med Intensiva 2012; 37:320-6. [PMID: 22854618 DOI: 10.1016/j.medin.2012.05.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2012] [Revised: 05/26/2012] [Accepted: 05/29/2012] [Indexed: 10/28/2022]
Abstract
OBJECTIVES To compare intensive care unit (ICU) mortality in patients with severe community-acquired pneumonia (SCAP) caused by Legionella pneumophila receiving combined therapy or monotherapy. METHODS A prospective multicenter study was made, including all patients with sporadic, community-acquired Legionnaires' disease (LD) admitted to the ICU. Admission data and information on the course of the disease were recorded. Antibiotic prescriptions were left to the discretion of the attending physician and were not standardized. RESULTS Twenty-five cases of SCAP due to L. pneumophila were included, and 7 patients (28%) out of 25 died after a median of 7 days of mechanical ventilation. Fifteen patients (60%) presented shock. Levofloxacin and clarithromycin were the antibiotics most commonly used in monotherapy, while the most frequent combination was rifampicin plus clarithromycin. Patients subjected to combination therapy presented a lower mortality rate versus patients subjected to monotherapy (odds ratio for death [OR] 0.15; 95%CI 0.02-1.04; p=0.08). In patients with shock, this association was stronger and proved statistically significant (OR for death 0.06; 95%CI 0.004-0.86; p=0.04). CONCLUSIONS Combined antibiotic therapy decreases mortality in patients with SCAP and shock caused by L. pneumophila.
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Affiliation(s)
- J Rello
- Hospital Universitari Vall d'Hebron, Barcelona, Spain.
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Health care-associated infections in surgical patients undergoing elective surgery: are alcohol use disorders a risk factor? J Am Coll Surg 2012; 215:229-36. [PMID: 22727411 DOI: 10.1016/j.jamcollsurg.2012.04.015] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2011] [Revised: 02/17/2012] [Accepted: 04/04/2012] [Indexed: 10/28/2022]
Abstract
BACKGROUND Health care-associated infections (HAI) result in 100,000 deaths/year. Alcohol use disorders (AUD) increase the risk of community-acquired infections and HAI. Small studies have shown that AUD increase the risk of HAI and surgical site infections (SSI). We sought to determine the risk of HAI and SSI in surgical patients undergoing elective inpatient joint replacement, coronary artery bypass grafting, laparoscopic cholecystectomy, colectomy, and hernia repair. STUDY DESIGN The Nationwide Inpatient Sample was analyzed (years 2007 and 2008). HAI were defined as health care-associated pneumonia, sepsis, SSI, and urinary tract infection. Primary outcomes were risk of HAI and SSI in patients with AUD. Secondary outcomes were mortality and hospital length of stay in patients with HAI and SSI, alpha = 10(-6). RESULTS There were 1,275,034 inpatient admissions analyzed; 38,335 (3.0%) cases of HAI were documented, and 5,756 (0.5%) cases of SSI were identified. AUD was diagnosed in 11,640 (0.9%) of cases. Multivariable analysis demonstrated that AUD was an independent predictor of developing HAI: odds ratio (OR) 1.70, p < 10(-6), and this risk was independent of type of surgery. By multivariable analysis, the risk of SSI in patients with AUD was also higher: OR 2.73, p < 10(-6). Hospital mortality in patients with HAI or SSI was not affected by AUD. However, hospital length of stay was longer in patients with HAI who had AUD (multivariable analysis 2.4 days longer, p < 10(-6)). Among patients with SSI, those with AUD did not have longer hospital length of stay. CONCLUSIONS Patients with AUD who undergo a variety of elective operations have an increased risk of infectious postoperative morbidity.
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Roles of interleukin-17 in an experimental Legionella pneumophila pneumonia model. Infect Immun 2011; 80:1121-7. [PMID: 22144493 DOI: 10.1128/iai.05544-11] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Interleukin-17 (IL-17) is a key factor in T helper type 17 (Th17) lineage host responses and plays critical roles in immunological control of a variety of infectious diseases. Although Legionella pneumophila, an intracellular bacterium found widely in the environment, often causes a serious and life-threatening pneumonia in humans, the contribution of IL-17 to immune function during Legionella pneumonia is unknown. In the present study, we used an experimental Legionella pneumonia infection to clarify the role of IL-17 in the resulting immune response. We observed robust production of pulmonary IL-17A and IL-17F (IL-17A/F), peaking on day 1 and declining thereafter. Upregulated production of tumor necrosis factor alpha (TNF-α), IL-6, and IL-1β, but not monocyte chemotactic protein 1 (MCP-1), was observed in Legionella-infected bone marrow-derived macrophages from BALB/c mice that had been stimulated with IL-17A or IL-17F. A significant decrease in the production of proinflammatory cytokines IL-6 and TNF-α was observed in IL-17A/F-deficient mice (BALB/c background) infected with L. pneumophila. Moreover, we found impaired neutrophil migration and lower numbers of chemokines (KC, LIX, and MIP-2) in IL-17A/F-deficient mice. IL-17A/F-deficient mice also eliminated L. pneumophila more slowly and were less likely to survive a lethal challenge. These results demonstrate that IL-17A/F plays a critical role in L. pneumophila pneumonia, probably through induction of proinflammatory cytokines and accumulation of neutrophils at the infection site.
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Harris NJ, Harris ACV, Spiro M. Management of Legionella in the intensive care setting. BMJ Case Rep 2011; 2011:bcr.12.2010.3587. [PMID: 22696745 DOI: 10.1136/bcr.12.2010.3587] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
In August 2009, during the swine flu pandemic, a 55-year-old male presented to the Emergency Department (ED) with shortness-of-breath and chest pain. He had experienced diarrhoea and vomiting during the 3 weeks preceding admission, and so had sought the advice of his General Practitioner (GP) who had prescribed a course of oseltamivir (Tamiflu). Despite this, his symptoms had worsened, and on arrival in the ED he was found to be tachypnoeic, tachycardic, feverish, anuric and in type I respiratory failure with a compensated metabolic acidosis. He subsequently became hypotensive, and so was transferred to the Intensive Care Unit (ICU) for supportive treatment of three organ failures. Investigation revealed that he was suffering from Legionnaires disease. This required a prolonged inpatient stay owing to both disease and treatment related complications.
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de Wit M, Zilberberg MD, Boehmler JM, Bearman GM, Edmond MB. Outcomes of Patients with Alcohol Use Disorders Experiencing Healthcare-Associated Infections. Alcohol Clin Exp Res 2011; 35:1368-73. [DOI: 10.1111/j.1530-0277.2011.01475.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Maeda T, Kimura S, Matsumoto T, Tanabe Y, Gejyo F, Yamaguchi K. Hyperoxia accelerates Fas-mediated signaling and apoptosis in the lungs of Legionella pneumophila pneumonia. BMC Res Notes 2011; 4:107. [PMID: 21470397 PMCID: PMC3083350 DOI: 10.1186/1756-0500-4-107] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2010] [Accepted: 04/06/2011] [Indexed: 11/10/2022] Open
Abstract
Background Oxygen supplementation is commonly given to the patients with severe pneumonia including Legionella disease. Recent data suggested that apoptosis may play an important role, not only in the pathogenesis of Legionella pneumonia, but also in oxygen-induced tissue damage. In the present study, the lethal sensitivity to Legionella pneumonia were compared in the setting of hyperoxia between wild-type and Fas-deficient mice. Findings C57BL/6 mice and B6.MRL-Faslpr mice characterized with Fas-deficiency were used in this study. After intratracheal administration of L. pneumophila, mice were kept in hyperoxic conditions (85-90% O2 conc.) in an airtight chamber for 3 days. Bone-marrow derived macrophages infected with L. pneumophila were also kept in hyperoxic conditions. Caspase activity and cytokine production were determined by using commercially available kits. Smaller increases of several apoptosis markers, such as caspase-3 and -8, were demonstrated in Fas-deficient mice, even though the bacterial burdens in Fas-deficient and wild type mice were similar. Bone-marrow derived macrophages from Fas-deficient mice were shown to be more resistant to Legionella-induced cytotoxicity than those from wild-type mice under hyperoxia. Conclusions These results demonstrated that Fas-mediated signaling and apoptosis may be a crucial factor in the pathogenesis of Legionella pneumonia in the setting of hyperoxia.
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Affiliation(s)
- Tsuneharu Maeda
- Department of Microbiology and Infectious Diseases, Toho University Faculty of Medicine, Tokyo 143-8540, Japan.
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Jespersen S, Søgaard OS, Schønheyder HC, Fine MJ, Ostergaard L. Clinical features and predictors of mortality in admitted patients with community- and hospital-acquired legionellosis: a Danish historical cohort study. BMC Infect Dis 2010; 10:124. [PMID: 20492639 PMCID: PMC2881091 DOI: 10.1186/1471-2334-10-124] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2010] [Accepted: 05/21/2010] [Indexed: 12/05/2022] Open
Abstract
Background Legionella is a common cause of bacterial pneumonia. Community-acquired [CAL] and hospital-acquired legionellosis [HAL] may have different presentations and outcome. We aimed to compare clinical characteristics and examine predictors of mortality for CAL and HAL. Methods We identified hospitalized cases of legionellosis in 4 Danish counties from January 1995 to December 2005 using the Danish national surveillance system and databases at departments of clinical microbiology. Clinical and laboratory data were retrieved from medical records; vital status was obtained from the Danish Civil Registration System. We calculated 30- and 90-day case fatality rates and identified independent predictors of mortality using logistic regression analyses. Results We included 272 cases of CAL and 60 cases of HAL. Signs and symptoms of HAL were less pronounced than for CAL and time from in-hospital symptoms to legionellosis diagnosis was shorter for CAL than for HAL (5.5 days vs. 12 days p < 0.001). Thirty-day case fatality was 12.9% for CAL and 33.3% for HAL; similarly 90-day case fatalities in the two groups were 15.8% and 55.0%, respectively. In a logistic regression analysis (excluding symptoms and laboratory tests) age >65 years (OR = 2.6, 95% CI: 1.1-5.9) and Charlson comorbidty index ≥2 (OR = 2.7, 95% CI: 1.1-6.5) were associated with an increased risk of death in CAL. We identified no statistically significant predictors of 30-day mortality in HAL. Conclusions Signs and symptoms were less pronounced in HAL compared to CAL. Conversely, 30-day case fatality was almost 3 times higher. Clinical awareness is important for the timely diagnosis and treatment especially of HAL. There is a need for further studies of prognostic factors in order to improve the therapeutic approach to legionellosis and potentially reduce mortality.
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Affiliation(s)
- Sanne Jespersen
- Department of Infectious Diseases, Aarhus University Hospital, Skejby, Brendstrupgaardsvej 100, 8200 Aarhus N, Denmark.
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Clinical potential of C-reactive protein and procalcitonin serum concentrations to guide differential diagnosis and clinical management of pneumococcal and Legionella pneumonia. J Clin Microbiol 2010; 48:1915-7. [PMID: 20220163 DOI: 10.1128/jcm.01348-09] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We retrospectively analyzed the records of 61 hospitalized patients with community-acquired pneumonia (CAP) caused by Streptococcus pneumoniae or Legionella pneumophila. We found that serum procalcitonin and sodium concentrations were significantly lower, and ferritin levels were significantly higher, in patients infected with L. pneumophila than in those infected with S. pneumoniae. The ratio of C-reactive protein to procalcitonin significantly distinguished between the groups. High procalcitonin levels were associated with an adverse clinical course.
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Chen Y, Tateda K, Fujita K, Ishii T, Ishii Y, Kimura S, Saga T, Annaka T, Yamada S, Zhao L, Li S, Azuma A, Gemma A, Kudoh S, Yamaguchi K. Sequential changes of Legionella antigens and bacterial load in the lungs and urines of a mouse model of pneumonia. Diagn Microbiol Infect Dis 2010; 66:253-60. [DOI: 10.1016/j.diagmicrobio.2009.11.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2009] [Revised: 11/02/2009] [Accepted: 11/03/2009] [Indexed: 11/17/2022]
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Gómez J, Mòdol J, García-Núñez M, Baños V, Lorenzo M, Pedro-Botet ML, Hernández T, Herrero JA, Ruiz J, Sabrià M. [Low mortality rate in an outbreak of Legionnaires' disease: correlation with the cytopathogenity study]. Med Clin (Barc) 2009; 133:325-9. [PMID: 19595380 DOI: 10.1016/j.medcli.2009.05.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2008] [Accepted: 05/06/2009] [Indexed: 11/28/2022]
Abstract
BACKGROUND In 2001 an outbreak of Legionnaires' diseases occurred in Murcia, Spain, with one of the lowest known rates of associated mortality. We describe the clinical data of a subgroup of patients, and present the results from molecular and virulence studies to correlate the lower mortality of the overall series with the strain virulence. PATIENTS AND METHODS A subgroup of 86 patients from the outbreak of Legionnaires'disease was prospectively included. Demographic, risk factors and clinical evolution data were obtained. Moreover, we performed a pulsed field gel electrophoresis and cytopathogenicity assay of the Murcia outbreak that were compared with other unrelated Legionella isolates. RESULTS Sixty-nine (77.9%) patients were males. The mean age of the patients was 58.2 years (range: 32-87). Smoking was the most frequent risk factor in 62 patients (71.7%) and 61 patients (70.2%) had underlying diseases. Clinical, laboratory and radiological manifestations were compatible with the atypical pneumonia syndrome. The mortality rate was 3.2%. All the clinical L. pneumophila isolates analyzed by PFGE showed the same subtype. When analyzing theses strains together with other Legionella strains, they were included in the group with lower virulence in the cytopathogenicity study. CONCLUSIONS The most outstanding data in this subgroup of patients were: male-sex, smoking, atypical clinical manifestations and low mortality. The low virulence of this molecular genotype of L. pneumophila may be responsible, in part, for the low mortality observed in the outbreak in Murcia.
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Affiliation(s)
- Joaquín Gómez
- Servicio de Enfermedades Infecciosas, Hospital Virgen de la Arrixaca, Universidad de Murcia, Murcia, Spain
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de Jager C, de Wit N, Weers-Pothoff G, van der Poll T, Wever P. Procalcitonin kinetics in Legionella pneumophila pneumonia. Clin Microbiol Infect 2009; 15:1020-5. [DOI: 10.1111/j.1469-0691.2009.02773.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Lee CH, Wu CL. An Update on the Management Of Hospital-Acquired Pneumonia in the Elderly. INT J GERONTOL 2008. [DOI: 10.1016/s1873-9598(09)70007-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Hayakawa K, Tateda K, Fuse ET, Matsumoto T, Akasaka Y, Ishii T, Nakayama T, Taniguchi M, Kaku M, Standiford TJ, Yamaguchi K. Paradoxically high resistance of natural killer T (NKT) cell-deficient mice to Legionella pneumophila: another aspect of NKT cells for modulation of host responses. J Med Microbiol 2008; 57:1340-1348. [PMID: 18927410 DOI: 10.1099/jmm.0.47747-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
In the present study, we examined the roles of natural killer T (NKT) cells in host defence against Legionella pneumophila in a mouse model. The survival rate of NKT cell-deficient Jalpha281 knock-out (KO) mice was significantly higher than that of wild-type mice. There was no bacterial overgrowth in the lungs, but Jalpha281 KO mice showed enhanced pulmonary clearance at a later stage of infection, compared with their wild-type counterparts. The severity of lung injury in L. pneumophila-infected Jalpha281 KO mice was less, as indicated by lung permeability measurements, such as lung weight and bronchoalveolar lavage fluid albumin concentration. Recruitment of inflammatory cells in the lungs was approximately twofold greater in Jalpha281 KO mice on day 3. Interestingly, higher values of interleukin (IL)-1beta and IL-18, and increased caspase-1 activity were noted in the lungs of Jalpha281 KO mice from an early time point (6 h). Exogenous alpha-galactosylceramide, a ligand of NKT cells, induced IL-12 and gamma interferon at 6 h, but suppressed IL-1beta at later time points in wild-type, whereas no effects were evident in Jalpha281 KO mice, as expected. Systemic administration of heat-killed L. pneumophila, but not Escherichia coli LPS, reproduced exaggerated production of IL-1beta in the lungs of Jalpha281 KO mice. These results demonstrate that NKT cells play a role in host defence against L. pneumophila, which is characterized by enhanced lung injury and decreased accumulation of inflammatory cells in the lungs. The regulation of IL-1beta, IL-18 and caspase-1 may be associated with the modulating effect of host responses by NKT cells.
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Affiliation(s)
- Kayoko Hayakawa
- Department of Infection Control and Laboratory Diagnostics, Internal Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan.,Department of Microbiology and Infectious Diseases, Toho University, School of Medicine, Tokyo 143-8540, Japan
| | - Kazuhiro Tateda
- Department of Microbiology and Infectious Diseases, Toho University, School of Medicine, Tokyo 143-8540, Japan
| | - Etsu T Fuse
- Department of Microbiology and Infectious Diseases, Toho University, School of Medicine, Tokyo 143-8540, Japan
| | | | - Yoshikiyo Akasaka
- Department of Pathology, Toho University School of Medicine, Tokyo, Japan
| | - Toshiharu Ishii
- Department of Pathology, Toho University School of Medicine, Tokyo, Japan
| | - Toshinori Nakayama
- Department of Immunology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Masaru Taniguchi
- Laboratory of Immune Regulation, RIKEN Research Center for Allergy and Immunology, Yokohama, Japan
| | - Mitsuo Kaku
- Department of Infection Control and Laboratory Diagnostics, Internal Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Theodore J Standiford
- Pulmonary and Critical Care Medicine, University of Michigan Medical School, Ann Arbor, MI 48109-0360, USA
| | - Keizo Yamaguchi
- Department of Microbiology and Infectious Diseases, Toho University, School of Medicine, Tokyo 143-8540, Japan
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Zilberberg MD, Exuzides A, Spalding J, Foreman A, Jones AG, Colby C, Shorr AF. Hyponatremia and hospital outcomes among patients with pneumonia: a retrospective cohort study. BMC Pulm Med 2008; 8:16. [PMID: 18710521 PMCID: PMC2531075 DOI: 10.1186/1471-2466-8-16] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2008] [Accepted: 08/18/2008] [Indexed: 01/11/2023] Open
Abstract
Background Community-acquired (CAP) and nosocomial pneumonias contribute substantially to morbidity and hospital resource utilization. Hyponatremia, occurring in >1/4 of patients with CAP, is associated with greater disease severity and worsened outcomes. Methods To explore how hyponatremia is associated with outcomes in hospitalized patients with pneumonia, we analyzed a large administrative database with laboratory component from January 2004 to December 2005. Hyponatremia was defined as at least two [Na+] < 135 mEq/L within 24 hours of admission value. Results Of 7,965 patients with pneumonia, 649 (8.1%) with hyponatremia were older (72.4 ± 15.7 vs. 68.0 ± 22.0, p < 0.01), had a higher mean Deyo-Charlson Comorbidity Index Score (1.7 ± 1.7 vs. 1.6 ± 1.6, p = 0.02), and higher rates of ICU (10.0% vs. 6.3%, p < 0.001) and MV (3.9% vs. 2.3%, p = 0.01) in the first 48 hours of hospitalization than patients with normal sodium. Hyponatremia was associated with an increased ICU (6.3 ± 5.6 vs. 5.3 ± 5.1 days, p = 0.07) and hospital lengths of stay (LOS, 7.6 ± 5.3 vs. 7.0 ± 5.2 days, p < 0.001) and a trend toward increased hospital mortality (5.4% vs. 4.0%, p = 0.1). After adjusting for confounders, hyponatremia was associated with an increased risk of ICU (OR 1.58, 95% CI 1.20–2.08), MV (OR 1.75 95% CI 1.13–2.69), and hospital death (OR 1.3, 95% CI 0.90–1.87) and with increases of 0.8 day to ICU and 0.3 day to hospital LOS, and over $1,300 to total hospital costs. Conclusion Hyponatremia is common among hospitalized patients with pneumonia and is associated with worsened clinical and economic outcomes. Studies in this large population are needed to explore whether prompt correction of [Na+] may impact these outcomes.
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Zilberberg MD, Exuzides A, Spalding J, Foreman A, Jones AG, Colby C, Shorr AF. Epidemiology, clinical and economic outcomes of admission hyponatremia among hospitalized patients. Curr Med Res Opin 2008; 24:1601-8. [PMID: 18426691 DOI: 10.1185/03007990802081675] [Citation(s) in RCA: 124] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
BACKGROUND Hyponatremia, the most frequent electrolyte derangement identified among hospitalized patients, is associated with worsened outcomes in patients with pneumonia, heart failure and other disorders. RESEARCH DESIGN AND METHODS We performed a retrospective cohort study of hospitalized patients to quantify the attributable influence of admission hyponatremia on hospital costs and outcomes. Data were derived from a large administrative database with laboratory components, representing 198,281 discharges from 39 US hospitals from January 2004 to December 2005. Hyponatremia was defined as admission serum [Na(+)]<135 mEq/L. RESULTS The incidence of hyponatremia at admission was 5.5% (n=10,899). Patients with hyponatremia were older (65.7+/-19.6 vs. 61.5+/-21.8, p<0.001) and had a higher Deyo-Charlson Comorbidity Index score (1.8+/-2.1 vs. 1.3+/-1.8, p<0.001) than those with normal [Na(+)]. A higher proportion of hyponatremic patients required intensive care unit (ICU) (17.3% vs. 10.9%, p<0.001) and mechanical ventilation (MV) (5.0% vs. 2.8%, p<0.001) within 48 hours of hospitalization. Hospital mortality (5.9% vs. 3.0%, p<0.001), mean length of stay (HLOS, 8.6+/-8.0 vs. 7.2+/-8.2 days, p<0.001) and costs ($16,502+/-$28,984 vs. $13,558+/-$24,640, p<0.001) were significantly greater among patients with hyponatremia than those without. After adjusting for confounders, hyponatremia was independently associated with an increased need for ICU (OR 1.64, 95% CI 1.56-1.73) and MV (OR 1.68, 95% CI 1.53-1.84), and higher hospital mortality (OR 1.55, 95% CI 1.42-1.69). Hyponatremia also contributed an increase in HLOS of 1.0 day and total hospital costs of $2,289. CONCLUSIONS Hyponatremia is common at admission among hospitalized patients and is independently associated with a 55% increase in the risk of death, substantial hospital resource utilization and costs. Potential for bias inherent in the retrospective cohort design is the main limitation of our study. Studies are warranted to explore how prompt normalization of [Na(+)] may impact these outcomes.
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An outbreak of Legionnaires' disease associated with a circulating bathwater system at a public bathhouse. II: radiological findings of pneumonia. J Infect Chemother 2008; 14:123-9. [PMID: 18622675 DOI: 10.1007/s10156-008-0591-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2007] [Accepted: 01/23/2008] [Indexed: 01/15/2023]
Abstract
In July 2002, one of the largest outbreaks of Legionnaires' disease associated with a public bathhouse in Japan occurred in Miyazaki. The local government and the University of Miyazaki performed a retrospective investigation of those persons who were considered to have been exposed to Legionella. This investigation provided a unique opportunity to analyze the clinical presentation of patients with outbreak-associated Legionnaires' disease. The purpose of the present study was to analyze high-resolution computerized tomography (HRCT) scans for the characteristic findings of Legionnaires' disease and to evaluate the correlation between the radiological severity on the initial chest X-ray and the outcome of the patients. Radiological findings of HRCT were analyzed in 35 patients. The radiological severity on chest X-ray was evaluated in 69 patients, utilizing the pneumonia scoring system proposed by the Research Committee on Legionnaires' Disease of the Ministry of Health, Labour and Welfare of the Japanese Government. Air-space consolidation, ground-glass opacity, and pleural effusion were common features on HRCT in patients with Legionnaires' disease. Typical HRCT findings showed bilateral multilobar infiltrates in the subpleural areas without centrilobular opacities. Multivariate logistic regression analysis identified male sex, short incubation period, high serum C-reactive protein, high serum alanine aminotransferase, hyponatremia, and positive Legionella urinary antigen test results as independent risk factors for high pneumonia scores. Patients with high pneumonia scores required significantly longer hospitalization and showed poor prognoses.
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Prevotat A, Bure M, Bergoin C, Tavernier JY, Van Grunderbeeck N, Yazdanpanah Y, Lamblin C. Épidémie de légionellose dans le Pas-de-Calais (2003-2004) : analyse descriptive et facteurs prédictifs d’une évolution défavorable. Rev Mal Respir 2008; 25:285-94. [DOI: 10.1016/s0761-8425(08)71547-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Brève : Legionella pneumophila : facteurs associés à la mortalité. Rev Mal Respir 2008. [DOI: 10.1016/s0761-8425(08)74837-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Lazic T, Wyatt TA, Matic M, Meyerholz DK, Grubor B, Gallup JM, Kersting KW, Imerman PM, Almeida-De-Macedo M, Ackermann MR. Maternal alcohol ingestion reduces surfactant protein A expression by preterm fetal lung epithelia. Alcohol 2007; 41:347-55. [PMID: 17889311 PMCID: PMC2083706 DOI: 10.1016/j.alcohol.2007.07.006] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2007] [Revised: 07/19/2007] [Accepted: 07/19/2007] [Indexed: 12/31/2022]
Abstract
In addition to neurodevelopmental effects, alcohol consumption at high levels during pregnancy is associated with immunomodulation and premature birth. Premature birth, in turn, is associated with increased susceptibility to various infectious agents such as respiratory syncytial virus (RSV). The initial line of pulmonary innate defense includes the mucociliary apparatus, which expels microorganisms trapped within the airway secretions. Surfactant proteins A and D (SP-A and SP-D, respectively) are additional components of pulmonary innate immunity and have an important role in pulmonary defense against inhaled pathogens. The purpose of this study was to determine if chronic alcohol consumption during the third trimester of pregnancy alters the function of the mucociliary apparatus and expression of SP-A and SP-D of fetal lung epithelia. Sixteen, date-mated ewes were assigned to two different groups; an ethanol-exposed group in which ewes received ethanol through surgically implanted intra-abomasal cannula during the third trimester of pregnancy, and a control group in which ewes received the equivalent amount of water instead of ethanol. Within these two groups, ewes were further randomly assigned to a full-term group in which the lambs were naturally delivered, and a preterm group in which the lambs were delivered prematurely via an abdominal incision and uterotomy. Ethanol was administered five times a week as a 40% solution at 1g/kg of body weight. The mean maternal serum alcohol concentration measured 6h postadministration was 16.3+/-4.36 mg/dl. Tracheas from six full-term lambs were collected to assess ciliary beat frequency (CBF). The lung tissue from all (24) lambs was collected for immunohistochemistry analysis of SP-A and SP-D protein production and fluorogenic real-time quantitative polymerase chain reaction analysis of SP-A and SP-D mRNA levels. Exposure to ethanol during pregnancy significantly blocked stimulated increase in CBF through ethanol-mediated desensitization of cAMP-dependent protein kinase. In addition, preterm born/ethanol-exposed lambs showed significantly decreased SP-A mRNA expression when compared with the preterm born/control group (P=.004); no significant changes were seen with SP-D. The full-term/ethanol-exposed lambs had no significant alterations in mRNA levels, but had significantly less detectable SP-A protein when compared with the full-term/control lambs (P=.02). These findings suggest that chronic maternal ethanol consumption during the third trimester of pregnancy alters innate immune gene expression in fetal lung. These alterations may underlie increased susceptibility of preterm infants, exposed to ethanol in utero, to RSV and other microbial agents.
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Affiliation(s)
- Tatjana Lazic
- Department of Veterinary Pathology, 2740 College of Veterinary Medicine, Iowa State University, Ames, IA 50011-1250, USA.
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Poupard M, Campèse C, Bernillon P, Che D. [Factors associated with mortality in Legionnaires' disease, France, 2002-2004]. Med Mal Infect 2007; 37:325-30. [PMID: 17512152 DOI: 10.1016/j.medmal.2007.03.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2007] [Accepted: 03/12/2007] [Indexed: 11/22/2022]
Abstract
UNLABELLED Risk factors for Legionnaires' disease are well known (older age, smoking, or immunosuppression), however, the factors associated with mortality are less documented. A retrospective analysis based on cases notified between 2002 and 2004 was conducted in France to identify these factors. METHOD Cases were identified through mandatory notifications sent to the Institut de veille sanitaire, France. Factors associated with mortality were identified using a logistic regression analysis. RESULTS Three thousand two hundred sixty-seven cases of Legionnaire's disease were notified during the study period and the evolution was documented for 85% of the cases (2.791). Three hundred seventy-seven deaths (13.5%) were notified. 72.5% of the patients were men and the median age was 61. The multivariate analysis applied to patients under 60 years revealed that cancer or hemopathy (OR=6.4 CI95% 3.6-11.2), underlying renal disease (OR=3.2 CI95% 1.0-9.9), or alcohol abuse (OR=2.2 CI95% 1.1-4.4) were associated with mortality. For older patients (>60 years) factors linked to mortality were: cancer/hemopathy (OR=1.8 CI95% 1.2-2.6), underlying renal disease (OR=3 CI95% 1.4-6.4), underlying cardiac disease (OR=2.4 CI95% 1.4-4), alcohol abuse (OR=2.4 CI95% 1.2-5.2), immunosuppression (OR=1.7 CI95% 1.1-2.6), nosocomial acquisition of the disease (OR=2.0 CI95% 1.3-3), or infection acquired in nursing home residents (OR=2.4 IC 95% 1.6-3.6). CONCLUSION These preliminary results further describe Legionnaires' disease and its mortality. However, they should be confirmed by carefully conducted prospective analysis. The description of LD patients at high risk of death will contribute to better prevention measures.
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Affiliation(s)
- M Poupard
- Institut de veille sanitaire, 12, rue du Val-d'Osne, 94415 Saint-Maurice cedex, France
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Documento de Consenso sobre pneumonia nosocomial11Sociedade Portuguesa de Pneumologia e Sociedade Portuguesa de Cuidados Intensivos / Portuguese Society of Pulmonology and Intensive Care Society,22O presente documento é simultaneamente publicado na Revista Portuguesa de Medicina Intensiva (2007; 14(1):7-30) / This work is published simultaneously in the Portuguese Journal of Intensive Care Medicine (2007; 14(1):7-30). REVISTA PORTUGUESA DE PNEUMOLOGIA 2007. [DOI: 10.1016/s0873-2159(15)30360-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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