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Leenheer D, Moreno AB, Paranjape K, Murray S, Jarraud S, Ginevra C, Guy L. Rapid adaptations of Legionella pneumophila to the human host. Microb Genom 2023; 9. [PMID: 36947445 PMCID: PMC10132064 DOI: 10.1099/mgen.0.000958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023] Open
Abstract
Legionella pneumophila are host-adapted bacteria that infect and reproduce primarily in amoeboid protists. Using similar infection mechanisms, they infect human macrophages, and cause Legionnaires' disease, an atypical pneumonia, and the milder Pontiac fever. We hypothesized that, despite the similarities in infection mechanisms, the hosts are different enough that there exist high-selective value mutations that would dramatically increase the fitness of Legionella inside the human host. By comparing a large number of isolates from independent infections, we identified two genes, mutated in three unrelated patients, despite the short duration of the incubation period (2-14 days). One is a gene coding for an outer membrane protein (OMP) belonging to the OmpP1/FadL family. The other is a gene coding for an EAL-domain-containing protein involved in cyclic-di-GMP regulation, which in turn modulates flagellar activity. The clinical strain, carrying the mutated EAL-domain-containing homologue, grows faster in macrophages than the wild-type strain, and thus appears to be better adapted to the human host. As human-to-human transmission is very rare, fixation of these mutations into the population and spread into the environment is unlikely. Therefore, parallel evolution - here mutations in the same genes observed in independent human infections - could point to adaptations to the accidental human host. These results suggest that despite the ability of L. pneumophila to infect, replicate in and exit from macrophages, its human-specific adaptations are unlikely to be fixed in the population.
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Affiliation(s)
- Daniël Leenheer
- Department of Medical Biochemistry and Microbiology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
- Ph.D. Program in Human Biology, School of Integrative and Global Majors, University of Tsukuba, Tsukuba, Japan
| | - Anaísa B Moreno
- Department of Medical Biochemistry and Microbiology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Kiran Paranjape
- Department of Medical Biochemistry and Microbiology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Susan Murray
- Department of Medical Biochemistry and Microbiology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Sophie Jarraud
- French National Reference Center of Legionella, Institute of Infectious Agents, Hospices Civils de Lyon, Lyon, France
- CIRI, Centre International de Recherche en Infectiologie, Legionella Pathogenesis Team, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, Lyon, France
| | - Christophe Ginevra
- French National Reference Center of Legionella, Institute of Infectious Agents, Hospices Civils de Lyon, Lyon, France
- CIRI, Centre International de Recherche en Infectiologie, Legionella Pathogenesis Team, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, Lyon, France
| | - Lionel Guy
- Department of Medical Biochemistry and Microbiology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
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Vidal KS, Suemoto CK, Moreno AB, Duncan B, Schmidt MI, Maestri M, Barreto SM, Lotufo PA, Bertola L, Bensenor IM, Brunoni AR. Association between cognitive performance and self-reported glaucoma in middle-aged and older adults: a cross-sectional analysis of ELSA-Brasil. ACTA ACUST UNITED AC 2020; 53:e10347. [PMID: 33146284 PMCID: PMC7643934 DOI: 10.1590/1414-431x202010347] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 08/27/2020] [Indexed: 12/31/2022]
Abstract
Recent evidence suggests that glaucoma and Alzheimer's disease are neurodegenerative diseases sharing common pathophysiological and etiological features, although findings are inconclusive. We sought to investigate whether self-reported glaucoma patients without dementia present poorer cognitive performance, an issue that has been less investigated. We employed cross-sectional data from the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil) and included participants ≥50 years of age without a known diagnosis of dementia and a self-reported glaucoma diagnosis. We excluded those with previous stroke, other eye conditions, and using drugs that could impair cognition. We evaluated cognition using delayed word recall, phonemic verbal fluency, and trail making (version B) tests. We used multinomial linear regression models to investigate associations between self-reported glaucoma with cognition, adjusted by several sociodemographic and clinical variables. Out of 4,331 participants, 139 reported glaucoma. Fully-adjusted models showed that self-reported glaucoma patients presented poorer performance in the verbal fluency test (β=-0.39, 95%CI=-0.64 to -0.14, P=0.002), but not in the other cognitive assessments. Thus, our results support the hypothesis that self-reported glaucoma is associated with poor cognitive performance; however, longitudinal data are necessary to corroborate our findings.
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Affiliation(s)
- K S Vidal
- Laboratório da Visão, Instituto de Psicologia, Universidade de São Paulo, São Paulo, SP, Brasil
| | - C K Suemoto
- Divisão de Geriatria, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
| | - A B Moreno
- Departamento de Epidemiologia e Métodos Quantitativos na Saúde, Escola Nacional de Saúde Pública, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil
| | - B Duncan
- Departamento de Epidemiologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil
| | - M I Schmidt
- Departamento de Epidemiologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil
| | - M Maestri
- Departamento de Oftalmologia e Otorrinolaringologia, Faculdade de Medicina, Universidade do Rio Grande do Sul, Porto Alegre, RS, Brasil
| | - S M Barreto
- Faculdade de Medicina e Hospital das Clínicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - P A Lotufo
- Departamento de Clínica Médica, Hospital Universitário, Universidade de São Paulo, São Paulo, SP, Brasil.,Departamento de Medicina Interna, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
| | - L Bertola
- Departamento de Medicina Interna, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
| | - I M Bensenor
- Departamento de Clínica Médica, Hospital Universitário, Universidade de São Paulo, São Paulo, SP, Brasil.,Departamento de Medicina Interna, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
| | - A R Brunoni
- Departamento de Clínica Médica, Hospital Universitário, Universidade de São Paulo, São Paulo, SP, Brasil.,Departamento de Medicina Interna, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil.,Laboratório de Neurociências, Departamento e Instituto de Psiquiatria, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
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Brunoni AR, Szlejf C, Suemoto CK, Santos IS, Goulart AC, Viana MC, Koyanagi A, Barreto SM, Moreno AB, Carvalho AF, Lange S, Griep RH, Lotufo PA, Benseñor IM. Association between ideal cardiovascular health and depression incidence: a longitudinal analysis of ELSA-Brasil. Acta Psychiatr Scand 2019; 140:552-562. [PMID: 31587258 DOI: 10.1111/acps.13109] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/30/2019] [Indexed: 12/18/2022]
Abstract
OBJECTIVE We investigated whether ideal cardiovascular health (ICH), a metric proposed by the American Heart Association, predicts depression development. METHODS Cohort analysis from the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil). Adults with no current depression and other common mental disorders, cardiovascular diseases, and antidepressant drug use at baseline had their ICH (composite score of smoking, dietary habits, body mass index, blood pressure, fasting glucose, cholesterol, and physical activity) assessed and classified into poor, intermediate, and optimal. Depression was assessed using the Clinical Interview Schedule-Revised (CIS-R). Poisson regression models, adjusted for sociodemographic factors and alcohol consumption, were employed. Stratified analyses were performed for age and sex. RESULTS We included 9214 participants (mean age 52 ± 9 years, 48.6% women). Overall depression incidence at 3.8-year follow-up was 1.5%. Intermediate and poor ICH significantly increased the risk rate (RR) of developing depression (2.48 [95%CI 1.06-5.78] and 3 [1.28-7.03], respectively) at a 3.8-year follow-up. Higher ICH scores decreased the rate of depression development (RR = 0.84 [0.73-0.96] per metric). Stratified analyses were significant for women and adults < 55 years old. CONCLUSIONS Poor cardiovascular health tripled depression risk at follow-up in otherwise healthy adults. Ameliorating cardiovascular health might decrease depression risk development.
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Affiliation(s)
- A R Brunoni
- Department of Internal Medicine, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil.,Laboratory of Neurosciences (LIM-27), Department and Institute of Psychiatry, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil.,Center for Clinical and Epidemiological Research, Hospital Universitário, Universidade de São Paulo, São Paulo, Brazil
| | - C Szlejf
- Center for Clinical and Epidemiological Research, Hospital Universitário, Universidade de São Paulo, São Paulo, Brazil
| | - C K Suemoto
- Department of Internal Medicine, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - I S Santos
- Department of Internal Medicine, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil.,Center for Clinical and Epidemiological Research, Hospital Universitário, Universidade de São Paulo, São Paulo, Brazil
| | - A C Goulart
- Center for Clinical and Epidemiological Research, Hospital Universitário, Universidade de São Paulo, São Paulo, Brazil
| | - M C Viana
- Center of Psychiatric Epidemiology (CEPEP), Department of Social Medicine, Postgraduate Program in Public Health, Federal University of Espírito Santo, Vitória, Brazil
| | - A Koyanagi
- Research and Development Unit, Parc Sanitari Sant Joan de Déu, Universitat de Barcelona, Fundació Sant Joan de Déu, Barcelona, Spain.,Instituto de Salud Carlos III, Centro de Investigación Biomédica en Red de Salud Mental, CIBERSAM, Madrid, Spain.,ICREA, Barcelona, Spain
| | - S M Barreto
- School of Medicine & Clinical Hospital, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - A B Moreno
- Department of Epidemiology and Quantitative Methods in Health, National School of Public Health Sergio Arouca, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - A F Carvalho
- Department of Psychiatry, Faculty of Medicine, University of Toronto, Toronto, ON, Canada.,Institute for Mental Health Policy Research, Centre for Addiction & Mental Health (CAMH), Toronto, ON, Canada
| | - S Lange
- Institute for Mental Health Policy Research, Centre for Addiction & Mental Health (CAMH), Toronto, ON, Canada
| | - R H Griep
- Laboratory of Health and Environment Education, Oswaldo Cruz Institute, Rio de Janeiro, Brazil
| | - P A Lotufo
- Department of Internal Medicine, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil.,Center for Clinical and Epidemiological Research, Hospital Universitário, Universidade de São Paulo, São Paulo, Brazil
| | - I M Benseñor
- Department of Internal Medicine, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil.,Center for Clinical and Epidemiological Research, Hospital Universitário, Universidade de São Paulo, São Paulo, Brazil
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Abstract
Changes in gene expression are an important mode of evolution; however, the proximate mechanism of these changes is poorly understood. In particular, little is known about the effects of mutations within cis binding sites for transcription factors, or the nature of epistatic interactions between these mutations. Here, we tested the effects of single and double mutants in two cis binding sites involved in the transcriptional regulation of the Escherichia coli araBAD operon, a component of arabinose metabolism, using a synthetic system. This system decouples transcriptional control from any posttranslational effects on fitness, allowing a precise estimate of the effect of single and double mutations, and hence epistasis, on gene expression. We found that epistatic interactions between mutations in the araBAD cis-regulatory element are common, and that the predominant form of epistasis is negative. The magnitude of the interactions depended on whether the mutations are located in the same or in different operator sites. Importantly, these epistatic interactions were dependent on the presence of arabinose, a native inducer of the araBAD operon in vivo, with some interactions changing in sign (e.g., from negative to positive) in its presence. This study thus reveals that mutations in even relatively simple cis-regulatory elements interact in complex ways such that selection on the level of gene expression in one environment might perturb regulation in the other environment in an unpredictable and uncorrelated manner.
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Lagos AR, Marques RV, Moreno AB, Silva KVKA, Alves MAS. Incubation and rearing-effort partitioning of wing-banded hornero Furnarius figulus (Passeriformes: Furnariidae). BRAZ J BIOL 2005; 65:281-6. [PMID: 16097730 DOI: 10.1590/s1519-69842005000200011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We studied incubation and feeding rates in two of five broods in two oven nests of Furnarius figulus at Lagoa Rodrigo de Freitas. During incubation, the number of visits and time spent in the nest did not differ between the adults. The number of feeding visits was significantly different between members of the breeding pair of the first but not of the second nest. Nestlings received arthropods, fishes, and larvae in the first nest and, in the second, arthropods, larvae, and fruits. The nestlings stayed about 23 days in the nests.
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Affiliation(s)
- A R Lagos
- Programa de Pós-graduação em Ecologia, Universidade Federal do Rio de Janeiro, Brazil
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Moreno AB, Thelen MH. Eating behavior in junior high school females. Adolescence 1995; 30:171-174. [PMID: 7625252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Female junior high school students (N = 175) were surveyed in an effort to ascertain present eating behavior as well as attitudes regarding dieting and concern about body weight. It was found that many subjects appear to have concerns as early as elementary school. Limitations of these findings are discussed as well as implications for further research.
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Affiliation(s)
- A B Moreno
- Adolescent Day Treatment Program, Washington, D.C., USA
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Moreno AB, Carvalho EDS, Guinsburg R, Goulart AL, Cardo DM, Farhat CK. [An epidemic caused by Salmonella typhimurium at a neonatal unit]. AMB Rev Assoc Med Bras 1988; 34:160-4. [PMID: 3075058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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