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Oral chagas

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https://www.readbyqxmd.com/read/28735791/detection-of-incomplete-root-fractures-in-endodontically-treated-teeth-using-different-high-resolution-cone-beam-computed-tomographic-imaging-protocols
#1
Victor Aquino Wanderley, Frederico Sampaio Neves, Monikelly Carmo Chagas Nascimento, Gabriela Queiroz Del Melo Monteiro, Natália Siqueira Lobo, Matheus Lima Oliveira, Joao Batista Sobrinho Nascimento Neto, Luciane Farias Araujo
INTRODUCTION: The purpose of this study was to compare different high-resolution cone-beam computed tomographic (CBCT) imaging protocols in the diagnosis of incomplete root fractures of endodontically treated teeth. METHODS: Twenty single-rooted human teeth were endodontically treated, and an incomplete root fracture was induced. The teeth were scanned with the CBCT unit PreXion 3D (Teracom, San Mateo, CA) operating at 2 different protocols: high resolution/standard (HI-STD) (19 seconds and 512 basis images) and high resolution/high density (HI-HI) (37 seconds and 1024 basis images)...
July 20, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28724448/systemic-insecticide-treatment-of-the-canine-reservoir-of-trypanosoma-cruzi-induces-high-levels-of-lethality-in-triatoma-infestans-a-principal-vector-of-chagas-disease
#2
Ariel Loza, Adrianna Talaga, Gladys Herbas, Ruben Jair Canaviri, Thalia Cahuasiri, Laura Luck, Alvaro Guibarra, Raquel Goncalves, Juan Antonio Pereira, Sonia A Gomez, Albert Picado, Louisa Alexandra Messenger, Caryn Bern, Orin Courtenay
BACKGROUND: Despite large-scale reductions in Chagas disease prevalence across Central and South America, Trypanosoma cruzi infection remains a considerable public health problem in the Gran Chaco region where vector-borne transmission persists. In these communities, peridomestic animals are major blood-meal sources for triatomines, and household presence of infected dogs increases T. cruzi transmission risk for humans. To address the pressing need for field-friendly, complementary methods to reduce triatomine infestation and interrupt T...
July 19, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28715142/cholinesterase-inhibition-reduces-arrhythmias-in-asymptomatic-chagas-disease
#3
Renata Rodrigues Teixeira de Castro, Graciema Porphirio, Sergio Salles Xavier, Ruy Silveira Moraes, Elton Luis Ferlin, Jorge Pinto Ribeiro, Antonio Claudio Lucas da Nóbrega
INTRODUCTION: Parasympathetic dysfunction may play a role in the genesis of arrhythmias in Chagas disease. AIM: This study evaluates the acute effects of pyridostigmine (PYR), a reversible cholinesterase inhibitor, on the occurrence of arrhythmias in patients with Chagas cardiac disease. METHOD: Following a double-blind, randomized, placebo-controlled, cross-over protocol, 17 patients (age 50±2 years) with Chagas cardiac disease type B underwent 24-hour Holter recordings after oral administration of either pyridostigmine bromide (45 mg, 3 times/day) or placebo (PLA)...
July 17, 2017: Cardiovascular Therapeutics
https://www.readbyqxmd.com/read/28706938/inhibitors-of-glycosomal-protein-import-provide-new-leads-against-trypanosomiasis
#4
COMMENT
Vishal C Kalel, Leonidas Emmanouilidis, Maciej Dawidowski, Wolfgang Schliebs, Michael Sattler, Grzegorz M Popowicz, Ralf Erdmann
Vector-borne trypanosomatid parasite infections in tropical and sub-tropical countries constitute a major threat to humans and livestock. Trypanosoma brucei parasites are transmitted by tsetse fly and lead to African sleeping sickness in humans and Nagana in cattle. In Latin American countries, Trypanosoma cruzi infections spread by triatomine kissing bugs lead to Chagas disease. Various species of Leishmania transmitted to humans by phlebotomine sandflies manifest in a spectrum of diseases termed Leishmaniasis...
July 3, 2017: Microbial Cell
https://www.readbyqxmd.com/read/28607099/inhibition-of-the-host-cell-lysosome-spreading-by-trypanosoma-cruzi-metacyclic-stage-specific-surface-molecule-gp90-down-regulates-parasite-invasion
#5
João Paulo Ferreira Rodrigues, Guilherme Hideki Takahashi Sant'ana, Maria Aparecida Juliano, Nobuko Yoshida
Successful infection by Trypanosoma cruzi, the agent of Chagas disease, is critically dependent on the host cell invasion by metacyclic trypomastigote (MT) forms. Two main metacyclic stage-specfic surface molecules, gp82 and gp90, play determinant roles in target cell invasion in vitro and in oral T. cruzi infection in mice. The structure and properties of gp82, which is highly conserved among T. cruzi strains, are well known. Informations on gp90 are still rather sparse. Here we attempted to fill that gap...
June 12, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28536686/mandible-metastasis-of-small-cell-lung-cancer-mimicking-a-residual-cyst
#6
Renata Mendonça Moraes, Fabio Abreu Alves, Bruna Fernandes do Carmo Carvalho, Felipe D'Almeida Costa, Rodrigo Nascimento Lopes, Graziella Chagas Jaguar
Small cell lung carcinoma (SCLC) is an uncommon tumor characterized by an aggressive behavior with early metastasis, usually to the contralateral lung, liver, brain, and bones. There are only five cases of this particular tumor metastasizing to the oral cavity described in the English literature. We present the case of metastatic SCLC in the mandible with radiographic findings resembling a residual cyst. A 66-year-old man with previous diagnosis and treatment for a SCLC was referred to the Stomatology Department with a history of persistent pain in the mandible 1 year after the inferior right pre-molar tooth extraction...
January 2017: Autopsy & case reports
https://www.readbyqxmd.com/read/28527286/-possible-oral-transmission-of-chagas-disease-among-hydrocarbons-sector-workers-in-casanare-colombia-2014
#7
Liliana Patricia Zuleta-Dueñas, Ángela Johana López-Quiroga, Fernando Torres-Torres, Oneida Castañeda-Porras
INTRODUCTION: Trypanosoma cruzi, the etiological agent for Chagas disease, can be transmitted by oral intake of contaminated food or drinks. During epidemiological week 14 of 2014, two cases of acute Chagas disease were notified among hydrocarbons sector workers in Paz de Ariporo, Casanare. OBJECTIVE: To characterize the affected population, to establish control and prevention measures and to confirm the outbreak. MATERIALS AND METHODS: We conducted an outbreak investigation that included the following components: a) Search for symptomatic people compatible with Chagas disease according to the case definition for their referral to medical services; b) entomological survey (192/197 houses); c) sanitary inspection and microbiological analysis of food samples; and d) study of reservoirs...
June 1, 2017: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/28512727/variability-of-high-dose-melphalan-exposure-on-oral-mucositis-in-patients-undergoing-prophylactic-low-level-laser-therapy
#8
Gustavo Henrique Rodrigues, Graziella Chagas Jaguar, Fabio Abreu Alves, Andre Guollo, Vanessa Oliveira Camandoni, Aline Santos Damascena, Vladmir Claudio Cordeiro Lima
The present study outlines the clinical impact and risk factors of oral mucositis in 79 patients with multiple myeloma following high-dose melphalan for autologous transplant. All patients underwent daily prophylactic low-level indium gallium aluminum phosphate diode laser therapy (660 nm, 15 mW, 3.75 J/cm(2), 10 s per point) from the beginning of the conditioning regimen up to day +2. Oral mucositis assessments were made daily until hospital discharge. For analysis, oral mucositis was divided into two groups according to severity: group 1, patients with oral mucositis grade <III (n = 71) and group 2, patients with oral mucositis grade ≥III (n = 8)...
May 16, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28506517/fish-oil-supplementation-benefits-the-murine-host-during-the-acute-phase-of-a-parasitic-infection-from-trypanosoma-cruzi
#9
Maria I Lovo-Martins, Aparecida D Malvezi, Rosiane V da Silva, Nágela G Zanluqui, Vera L H Tatakihara, Niels O S Câmara, Ana Paula L de Oliveira, Jean P S Peron, Marli C Martins-Pinge, Kevin L Fritsche, Phileno Pinge-Filho
Long-chain omega-3 polyunsaturated fatty acids (LC n-3 PUFA) are known to modulate a variety of immune cell functions. On occasion, this has led to diminished host resistance to certain viral and bacterial infections. Little is known about the impact of n-3 PUFA on host resistance to parasitic infection, however, based on results from a small study conducted more than two decades ago, we hypothesized that providing mice LC n-3 PUFA will diminish host resistance to Trypanosoma cruzi, the parasitic pathogen responsible for Chagas disease...
May 2017: Nutrition Research
https://www.readbyqxmd.com/read/28379959/unraveling-chagas-disease-transmission-through-the-oral-route-gateways-to-trypanosoma-cruzi-infection-and-target-tissues
#10
Danielle Silva-Dos-Santos, Juliana Barreto-de-Albuquerque, Bárbara Guerra, Otacilio C Moreira, Luiz Ricardo Berbert, Mariana Tavares Ramos, Barbara Angelica S Mascarenhas, Constança Britto, Alexandre Morrot, Déa M Serra Villa-Verde, Luciana Ribeiro Garzoni, Wilson Savino, Vinícius Cotta-de-Almeida, Juliana de Meis
Oral transmission of Trypanosoma cruzi, the causative agent of Chagas disease, is the most important route of infection in Brazilian Amazon and Venezuela. Other South American countries have also reported outbreaks associated with food consumption. A recent study showed the importance of parasite contact with oral cavity to induce a highly severe acute disease in mice. However, it remains uncertain the primary site of parasite entry and multiplication due to an oral infection. Here, we evaluated the presence of T...
April 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28374923/oral-fish-oil-positively-influences-nutritional-inflammatory-risk-in-patients-with-haematological-malignancies-during-chemotherapy-with-an-impact-on-long-term-survival-a-randomised-clinical-trial
#11
T R Chagas, D S Borges, P F de Oliveira, M C Mocellin, A M Barbosa, C Q Camargo, J Â G Del Moral, A Poli, P C Calder, E B S M Trindade, E A Nunes
BACKGROUND: Studies suggest that the ingestion of fish oil (FO), a source of the omega-3 polyunsaturated fatty acids docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), can reduce the deleterious side-effects of chemotherapy. The aim of this randomised clinical trial was to evaluate the effect of supplementation with oral FO for 9 weeks on nutritional parameters and inflammatory nutritional risk in patients with haematological malignancies during the beginning of chemotherapy...
April 4, 2017: Journal of Human Nutrition and Dietetics: the Official Journal of the British Dietetic Association
https://www.readbyqxmd.com/read/28274885/molecular-identification-of-wild-triatomines-of-the-genus-rhodnius-in-the-bolivian-amazon-strategy-and-current-difficulties
#12
Simone Frédérique Brenière, Edwin Wily Condori, Rosio Buitrago, Luis Fernando Sosa, Catarina Lopes Macedo, Christian Barnabé
The Amazon region has recently been considered as endemic in Latin America. In Bolivia, the vast Amazon region is undergoing considerable human migrations and substantial anthropization of the environment, potentially renewing the danger of establishing the transmission of Chagas disease. The cases of human oral contamination occurring in 2010 in the town of Guayaramerín provided reasons to intensify research. As a result, the goal of this study was to characterize the species of sylvatic triatomines circulating in the surroundings of Yucumo (Beni, Bolivia), a small Amazonian city at the foot of the Andes between the capital (La Paz) and Trinidad the largest city of Beni...
March 6, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28250661/antifungal-activity-of-hydroalcoholic-extract-of-chrysobalanus-icaco-against-oral-clinical-isolates-of-candida-species
#13
João Paulo Bastos Silva, Ana Regina Maués Noronha Peres, Thiago Portal Paixão, Andressa Santa Brígida Silva, Ana Cristina Baetas, Wagner Luiz Ramos Barbosa, Marta Chagas Monteiro, Marcieni Ataíde Andrade
BACKGROUND: Chrysobalanus icaco is a medicinal plant commonly used to treat fungal infections in Brazilian Amazonian region. OBJECTIVE: This work aimed to evaluate the antifungal activity of the hydroalcoholic extract of C. icaco (HECi) against oral clinical isolates of Candida spp. and to determine the pharmacognostic parameters of the herbal drug and the phytochemical characteristics of HECi. MATERIALS AND METHODS: The pharmacognostic characterization was performed using pharmacopoeial techniques...
January 2017: Pharmacognosy Research
https://www.readbyqxmd.com/read/28198632/engineering-oral-and-parenteral-amorphous-amphotericin-b-formulations-against-experimental-trypanosoma-cruzi-infections
#14
Miriam Rolón, Dolores R Serrano, Aikaterini Lalatsa, Esther de Pablo, Juan Jose Torrado, Maria Paloma Ballesteros, Anne Marie Healy, Celeste Vega, Cathia Coronel, Francisco Bolás-Fernández, Maria Auxiliadora Dea-Ayuela
Chagas disease (CD) is a parasitic zoonosis endemic in most mainland countries of Central and South America affecting nearly 10 million people, with 100 million people at high risk of contracting the disease. Treatment is only effective if received at the early stages of the disease. Only two drugs (benznidazole and nifurtimox) have so far been marketed, and both share various limitations such as variable efficacy, many side effects, and long duration of treatment, thus reducing compliance. The in vitro and in vivo efficacy of poly-aggregated amphotericin B (AmB), encapsulated poly-aggregated AmB in albumin microspheres (AmB-AME), and dimeric AmB-sodium deoxycholate micelles (AmB-NaDC) was evaluated...
April 3, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28167558/pharmacokinetics-and-tissue-distribution-of-benznidazole-after-oral-administration-in-mice
#15
Luísa Perin, Rodrigo Moreira da Silva, Kátia da Silva Fonseca, Jamille Mirelle de Oliveira Cardoso, Fernando Augusto Siqueira Mathias, Levi Eduardo Soares Reis, Israel Molina, Rodrigo Correa-Oliveira, Paula Melo de Abreu Vieira, Cláudia Martins Carneiro
Specific chemotherapy using benznidazole (BNZ) for Chagas disease during the chronic stage is controversial due to its limited efficacy and toxic effects. Although BNZ has been used to treat Chagas disease since the 1970s, few studies about the biodistribution of this drug exist. In this study, BNZ tissue biodistribution in a murine model and its pharmacokinetic profile in plasma were monitored. A bioanalytical high-performance liquid chromatography method with a UV detector (HPLC-UV) was developed and validated according to the European Medicines Agency for quantification of BNZ in organs and plasma samples prepared by liquid-liquid extraction using ethyl acetate...
April 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28146169/chagas-disease-transmission-by-consumption-of-game-meat-systematic-review
#16
Luiz Henrique Conde Sangenis, Marco Antonio Prates Nielebock, Ceumara da Silva Santos, Mateus Curty Carriello da Silva, Glauber Motta Ribeiro Bento
Objective: To evaluate the influence of game meat consumption in Chagas disease (CD) transmission, the conditions under which it occurs and the frequency of reports in the literature. Methods: Through systematic review, databases PubMed, LILACS, MEDLINE, and SciELO were consulted, and articles written in Portuguese, English, and Spanish were included, with no limitation over publication date. We used the following descriptors: oral, transmission, meat, wild animals, hunt, carnivory, and Chagas disease...
October 2016: Revista Brasileira de Epidemiologia, Brazilian Journal of Epidemiology
https://www.readbyqxmd.com/read/28132566/long-term-comparative-pharmacovigilance-of-orally-transmitted-chagas-disease-first-report
#17
Belkisyolé Alarcón de Noya, Raiza Ruiz-Guevara, Oscar Noya, Julio Castro, John Ossenkopp, Zoraida Díaz-Bello, Cecilia Colmenares, José Antonio Suárez, Oscar Noya-Alarcón, Laura Naranjo, Humberto Gutiérrez, Giuseppa Quinci, Jaime Torres
BACKGROUND: Two old drugs are the only choice against Trypanosoma cruzi and little is known about their secondary effects in the acute stage of oral-transmitted Chagas disease (ChD). METHODS: A cross-sectional analytical surveillance study was conducted in a sizable cohort of patients seen during the largest acute foodborne ChD microepidemic registered so far. Individuals were treated with benznidazole (BNZ) or nifurtimox (NFX). 'Common Terminology Criteria for Adverse Events' was assessed to categorize side effects according to severity...
March 2017: Expert Review of Anti-infective Therapy
https://www.readbyqxmd.com/read/28108369/jaburetox-affects-gene-expression-and-enzyme-activities-in-rhodnius-prolixus-a-chagas-disease-vector
#18
Leonardo L Fruttero, Natalia R Moyetta, Monique Siebra Krug, Valquiria Broll, Matheus V Coste Grahl, Rafael Real-Guerra, Fernanda Stanisçuaski, Celia R Carlini
Jaburetox, a recombinant peptide of ∼11kDa derived from one of the Canavalia ensiformis (Jack Bean) urease isoforms, is toxic and lethal to insects belonging to different orders when administered orally or via injection. Previous findings indicated that Jaburetox acts on insects in a complex fashion, inhibiting diuresis and the transmembrane potential of Malpighian tubules, interfering with muscle contractility and affecting the immune system. In vitro, Jaburetox forms ionic channels and alters permeability of artificial lipid membranes...
April 2017: Acta Tropica
https://www.readbyqxmd.com/read/28025938/trypanothione-reductase-and-superoxide-dismutase-as-current-drug-targets-for-trypanosoma-cruzi-an-overview-of-compounds-with-activity-against-chagas-disease
#19
Iván Beltrán-Hortelano, Silvia Pérez-Silanes, Silvia Galiano
It has been over a century since Carlos Chagas discovered the Trypanosoma cruzi (T. cruzi) as the causative agent of Chagas disease (CD), a neglected tropical disease with several socioeconomic, epidemiological and human health repercussions. Currently, there are only two commercialized drugs to treat CD in acute phase, nifurtimox and benznidazol, with several adverse side effects. Thus, new orally available and safe drugs for this parasitic infection are urgently required. One strategy of great importance in new drug discovery programmes is based on the search of molecules enabling to interfere with enzymes involved in T...
December 26, 2016: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/27993415/orally-transmitted-chagas-disease
#20
REVIEW
Maria Teresa Filigheddu, Miguel Górgolas, José Manuel Ramos
Chagas disease is a zoonosis caused by protozoan parasite Trypanosoma cruzi, which is most frequently associated with a vectorial transmission. However, in recent years we have observed a significant increase in the oral transmission of the disease, associated mainly with the consumption of drinks made from fruit or other vegetables contaminated with triatomine faeces or secretions from infected mammals. After a latency period of 3 to 22 days after ingestion, the oral infection is characterized by more severe manifestations than those associated with vectorial transmission: prolonged fever, acute myocarditis with heart failure and, in some cases, meningoencephalitis...
February 9, 2017: Medicina Clínica
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