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Pimenta PFP, Orfano AS, Bahia AC, Duarte APM, Ríos-Velásquez CM, Melo FF, Pessoa FAC, Oliveira GA, Campos KMM, Villegas LM, Rodrigues NB, Nacif-Pimenta R, Simões RC, Monteiro WM, Amino R, Traub-Cseko YM, Lima JBP, Barbosa MGV, Lacerda MVG, Tadei WP, Secundino NFC. An overview of malaria transmission from the perspective of Amazon Anopheles vectors. Mem Inst Oswaldo Cruz 2015; 110:23-47. [PMID: 25742262 PMCID: PMC4371216 DOI: 10.1590/0074-02760140266] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Accepted: 12/18/2014] [Indexed: 02/07/2023] Open
Abstract
In the Americas, areas with a high risk of malaria transmission are mainly located in the Amazon Forest, which extends across nine countries. One keystone step to understanding the Plasmodium life cycle in Anopheles species from the Amazon Region is to obtain experimentally infected mosquito vectors. Several attempts to colonise Anopheles species have been conducted, but with only short-lived success or no success at all. In this review, we review the literature on malaria transmission from the perspective of its Amazon vectors. Currently, it is possible to develop experimental Plasmodium vivax infection of the colonised and field-captured vectors in laboratories located close to Amazonian endemic areas. We are also reviewing studies related to the immune response to P. vivax infection of Anopheles aquasalis, a coastal mosquito species. Finally, we discuss the importance of the modulation of Plasmodium infection by the vector microbiota and also consider the anopheline genomes. The establishment of experimental mosquito infections with Plasmodium falciparum, Plasmodium yoelii and Plasmodium berghei parasites that could provide interesting models for studying malaria in the Amazonian scenario is important. Understanding the molecular mechanisms involved in the development of the parasites in New World vectors is crucial in order to better determine the interaction process and vectorial competence.
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Affiliation(s)
- Paulo FP Pimenta
- Centro de Pesquisas René Rachou-Fiocruz, Belo Horizonte, MG,
Brasil
- Fundação de Medicina Tropical Dr Heitor Vieira Dourado, Manaus, AM,
Brasil
| | | | - Ana C Bahia
- Instituto Oswaldo Cruz-Fiocruz, Rio de Janeiro, RJ, Brasil
| | - Ana PM Duarte
- Centro de Pesquisas René Rachou-Fiocruz, Belo Horizonte, MG,
Brasil
| | | | - Fabrício F Melo
- Centro de Pesquisas René Rachou-Fiocruz, Belo Horizonte, MG,
Brasil
| | | | | | - Keillen MM Campos
- Fundação de Medicina Tropical Dr Heitor Vieira Dourado, Manaus, AM,
Brasil
| | | | | | | | - Rejane C Simões
- Instituto Nacional de Pesquisas da Amazônia, Manaus, AM, Brasil
| | - Wuelton M Monteiro
- Fundação de Medicina Tropical Dr Heitor Vieira Dourado, Manaus, AM,
Brasil
| | - Rogerio Amino
- Unité de Biologie et Génétique du Paludisme, Institut Pasteur, Paris,
France
| | | | - José BP Lima
- Fundação de Medicina Tropical Dr Heitor Vieira Dourado, Manaus, AM,
Brasil
- Instituto Oswaldo Cruz-Fiocruz, Rio de Janeiro, RJ, Brasil
| | - Maria GV Barbosa
- Fundação de Medicina Tropical Dr Heitor Vieira Dourado, Manaus, AM,
Brasil
| | - Marcus VG Lacerda
- Fundação de Medicina Tropical Dr Heitor Vieira Dourado, Manaus, AM,
Brasil
- Instituto Leônidas e Maria Deane-Fiocruz, Manaus, AM, Brasil
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Skare TL, Leite N, Bortoluzzo AB, Gonçalves CR, da Silva JAB, Ximenes AC, Bértolo MB, Ribeiro SLE, Keiserman M, Menin R, Carneiro S, Azevedo VF, Vieira WP, Albuquerque EDN, Bianchi WA, Bonfiglioli R, Campanholo C, Carvalho HMS, Costa IP, Duarte AP, Gavi MBO, Kohem CL, Lima SAL, Meirelles ES, Pereira IA, Pinheiro MM, Polito E, Resende GG, Rocha FAC, Santiago MB, Sauma MDFLC, Sampaio-Barros PD. Effect of age at disease onset in the clinical profile of spondyloarthritis: a study of 1424 Brazilian patients. Clin Exp Rheumatol 2012; 30:351-357. [PMID: 22510473] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2011] [Accepted: 10/25/2011] [Indexed: 05/31/2023]
Abstract
OBJECTIVES To analyse demographic and clinical variables in patients with disease onset before and after 40, 45 and 50 years in a large series of Brazilian SpA patients. METHODS A common protocol of investigation was prospectively applied to 1424 SpA patients in 29 centres distributed through the main geographical regions in Brazil. The mean age at disease onset was 28.56 ± 12.34 years, with 259 patients (18.2%) referring disease onset after 40 years, 151 (10.6%) after 45 years and 81 (5.8%) after 50 years. Clinical and demographic variables and disease indices (BASDAI, BASFI, BASRI, MASES, ASQoL) were investigated. Ankylosing spondylitis was the most frequent disease (66.3%), followed by psoriatic arthritis (18%), undifferentiated SpA (6.7%), reactive arthritis (5.5%), and enteropathic arthritis (3.5%). RESULTS Comparing the groups according to age of disease onset, those patients with later onset presented statistical association with female gender, peripheral arthritis, dactylitis, nail involvement and psoriasis, as well as negative statistical association with inflammatory low back pain, alternating buttock pain, radiographic sacroiliitis, hip involvement, positive familial history, HLA-B27 and uveitis. BASDAI, BASFI and quality of life, as well as physicians and patient's global assessment, were similar in all the groups. Radiographic indices showed worse results in the younger age groups. CONCLUSIONS There are two different clinical patterns in SpA defined by age at disease onset: one with predominance of axial symptoms in the group with disease onset ≤ 40 years and another favouring the peripheral manifestations in those with later disease onset.
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Affiliation(s)
- T L Skare
- Hospital Evangélico de Curitiba, Brazil.
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Ferreira S, Santos J, Duarte A, Duarte AP, Queiroz JA, Domingues FC. Screening of antimicrobial activity of Cistus ladanifer and Arbutus unedo extracts. Nat Prod Res 2011; 26:1558-60. [PMID: 22077559 DOI: 10.1080/14786419.2011.569504] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Abstract
In this work, the in vitro antimicrobial activity of different crude extracts obtained from Cistus ladanifer L. and Arbutus unedo L. was investigated. The ethanol, methanol and acetone/water extracts of Cistus ladanifer and Arbutus unedo were prepared using different extraction methods and their antimicrobial activities against reference strains, including three Gram-positive, five Gram-negative and three yeasts, and against clinical isolates of Helicobacter pylori and methicillin-resistant Staphylococcus aureus, were investigated. All the extracts inhibited more than one microorganism; moreover all of them presented antimicrobial activity against the Gram-positive bacteria, Klebsiella pneumonia, Candida tropicalis and Helicobacter pylori. It is noteworthy that the most considerable in vitro effect was observed against Helicobacter pylori. These inhibitory effects can be considered relevant to the development of new agents for inclusion in the treatment or prevention of infections by the tested strains.
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Affiliation(s)
- S Ferreira
- Unidade de Materiais Têxteis e Papeleiros, Universidade da Beira Interior, Avda Marquês D'Ávila e Bolama, Covilhã 6201-001, Portugal
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Ferreira S, Gil N, Queiroz JA, Duarte AP, Domingues FC. An evaluation of the potential of Acacia dealbata as raw material for bioethanol production. Bioresour Technol 2011; 102:4766-4773. [PMID: 21316950 DOI: 10.1016/j.biortech.2011.01.051] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2010] [Revised: 01/14/2011] [Accepted: 01/17/2011] [Indexed: 05/30/2023]
Abstract
In this work, the potential of Acacia dealbata as raw material for ethanol production was evaluated, as well as its composition with regard to cellulose, hemicelluloses, lignin, extractives and ash. The tree samples were subjected to several dilute acid pretreatments using a combined severity parameter ranging from 0.7 to 3.7. The highest ethanol concentration obtained was 10.31 g ethanol/L within 24 h by using a separate hydrolysis and fermentation of the water insoluble fraction after pretreatment at 180 °C with 0.8% of sulfuric acid for 15 min. With simultaneous saccharification and fermentation, results obtained for the washed solids of water insoluble fraction were better than those obtained with the whole slurry.
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Affiliation(s)
- S Ferreira
- Research Unit of Textile and Paper Materials, University of Beira Interior, Av., Marquês D' Ávila e Bolama, 6201-001 Covilhã, Portugal
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Ferreira S, Gil N, Queiroz JA, Duarte AP, Domingues FC. Bioethanol from the Portuguese forest residue Pterospartum tridentatum--an evaluation of pretreatment strategy for enzymatic saccharification and sugars fermentation. Bioresour Technol 2010; 101:7797-7803. [PMID: 20965126 DOI: 10.1016/j.biortech.2010.05.038] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2010] [Revised: 05/10/2010] [Accepted: 05/17/2010] [Indexed: 05/30/2023]
Abstract
Under the current energy scenario, the development of alternatives to fossil fuels, like bioethanol from lignocellulosic materials, is highly relevant. Therefore it is important to search and study new raw materials and to optimize the different steps that lead to bioethanol production. In this work, acid diluted pretreatment was optimized considering the release of sugars. Under the optimal conditions, the reducing sugars yield was of 293.4mg/g of dry biomass in liquid fraction. The tested pretreated samples of Pterospartum tridentatum that presented a higher glucose yield in enzymatic saccharification where those that were subject to a pretreatment at 180°C for 75min with 2.75% (w/w) of sulfuric acid when using a biomass/liquid ratio of 2.25g/10mL leading to a maximum yield of glucose that was 92% of the theoretical maximum. From the fermentation of filtrates it was possible to obtain a maximum ethanol yield of 0.26g ethanol/g total sugars, without previous detoxification.
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Affiliation(s)
- S Ferreira
- Research Unit of Textile and Paper Materials, University of Beira Interior, Av. Marquês D' Ávila e Bolama, 6201-001 Covilhã, Portugal
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Baptista C, Robert D, Duarte AP. Relationship between lignin structure and delignification degree in Pinus pinaster kraft pulps. Bioresour Technol 2008; 99:2349-56. [PMID: 17604620 DOI: 10.1016/j.biortech.2007.05.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2006] [Revised: 04/28/2007] [Accepted: 05/06/2007] [Indexed: 05/16/2023]
Abstract
This study examines the structure of residual and dissolved lignins from Pinus pinaster pulps obtained at different degrees of delignification by laboratory conventional kraft pulping. The cooking H factor was varied from 85 to 8049. The residual and dissolved lignin samples were characterised by elemental analysis, residual carbohydrate content, permanganate oxidation and 13C NMR spectroscopy. The reflectance factor of the pulps was also determined in order to tentatively correlate the delignification degree and residual lignin structure with the pulp colour. The obtained results confirmed that the delignification degree increases the condensation of the lignin structure, which might have an influence upon the observed increased pulp colour. The lack of selectivity of kraft pulping process in the case of more delignified pulps was also shown.
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Affiliation(s)
- C Baptista
- Department of Chemical and Environmental Engineering, Polytechnic Institute of Tomar, 2300-313 Tomar, Portugal
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Abrantes S, Amaral ME, Costa AP, Duarte AP. Cynara cardunculus L. alkaline pulps: alternatives fibres for paper and paperboard production. Bioresour Technol 2007; 98:2873-8. [PMID: 17398089 DOI: 10.1016/j.biortech.2006.09.052] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2006] [Accepted: 09/28/2006] [Indexed: 05/14/2023]
Abstract
The pulping of Cynara cardunculus L. (cardoon) was performed under conditions for kraft, kraft-AQ and soda-AQ processes. The best results in terms of delignification degree, expressed as kappa number, pulp viscosity and screened yield, were obtained for the kraft-AQ process with 0.20% of anthraquinone (AQ). The papermaking potential of the selected pulp was studied attending to biometric fibre characterisation, refining aptitude, optical and strength properties. All properties were compared against a Eucalyptus globulus pulp at different refining degrees. The cardoon pulp was also evaluated concerning its potential to board manufacture, alone and in mixtures with pine pulp, giving rise to promising results for liner manufacture.
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Affiliation(s)
- S Abrantes
- Research Unit of Textile and Paper Materials, University of Beira Interior, 6201-001 Covilhã, Portugal
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Moreira A, Louro F, Martins M, Duarte AP. [Kikuchi and Fujimoto disease]. ACTA MEDICA PORT 2000; 13:43-7. [PMID: 11059054] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
We present a case of Kikuchi and Fujimoto's disease (KFD), revealed by malar rash, fever, arthritis and lymphadenopathy, suggesting Systemic Lupus Erythematosus (SLE). The relation between KFD and SLE is not yet completely understood and remains complex. There are few cases with a lupus-like presentation and the histopathologic features may be insufficient to confirm the KFD diagnosis definitively. The clinical presentation, the IgM deposits at the dermal-epidermal transition in the Lupus Band Test, and the presence of anticardiolipin antibody emphasises the relationship between these two entities and does not exclude the possibility of evolution to SLE, which makes the prognosis doubtful.
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Affiliation(s)
- A Moreira
- Serviço de Medicina 2, Hospital de S. José, Lisboa
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Duarte AP, Conde Miranda E. [A new quaternary alkaloid from Aspidosperma gilbertii]. AN ACAD BRAS CIENC 1983; 55:189-93. [PMID: 6675489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
The present work describes the structure determination of a new quaternary carbozol type alkaloid, isolated from Aspidosperma gilbertii: N,N-Dimethyltetrahydroellipticinium Hydroxyde.
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Gilbert B, Duarte AP, Nakagawa Y, Joule JA, Flores SE, Aguayo Brissolese J, Campello J, Carrazzoni EP, Owellen RJ, Blossey EC, Brown KS, Djerassi C. Alkaloid studies. L. The alkaloids of twelve Aspidosperma species. Tetrahedron 1965; 21:1141-66. [PMID: 5879346 DOI: 10.1016/0040-4020(65)80057-6] [Citation(s) in RCA: 71] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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