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Nogueira DA, Sáfadi T, Lima RRD, Mata ASD, Graciano MMDC, Barçante JMDP, Barçante TA, Dourado SMP. Spatio-temporal GAMLSS modeling of the incidence of schistosomiasis in the central region of the State of Minas Gerais, Brazil. CAD SAUDE PUBLICA 2023; 39:e00068822. [PMID: 37377298 PMCID: PMC10494687 DOI: 10.1590/0102-311xpt068822] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 01/23/2023] [Accepted: 03/09/2023] [Indexed: 06/29/2023] Open
Abstract
In Brazil, millions of people live in areas with risk of schistosomiasis, a neglected chronic disease with high morbidity. The Schistosoma mansoni helminth is present in all macroregions of Brazil, including the State of Minas Gerais, one of the most endemic states. For this reason, the identification of potential foci is essential to support educational and prophylactic public policies to control this disease. This study aims to model schistosomiasis data based on spatial and temporal aspects and assess the importance of some exogenous socioeconomic variables and the presence of the main Biomphalaria species. Considering that, when working with incident cases, a discrete count variable requires an appropriate modeling, the GAMLSS modeling was chosen since it jointly considers a more appropriate distribution for the response variable due to zero inflation and spatial heteroscedasticity. Several municipalities presented high incidence values from 2010 to 2012, and a downward trend was observed until 2020. We also noticed that the distribution of incidence behaves differently in space and time. Municipalities with dams presented risk 2.25 times higher than municipalities without dams. The presence of B. glabrata was associated with the risk of schistosomiasis. On the other hand, the presence of B. straminea represented a lower risk of the disease. Thus, the control and monitoring of B. glabrata snails is essential to control and eliminate schistosomiasis; and the GAMLSS model was effective in the treatment and modeling of spatio-temporal data.
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Castro JC, Bueno LL, Milagres TF, Rêgo FD, Gontijo CMF, Peconick AP, Andrade AJ, Barçante TA, Barçante JMP. Molecular detection of Leishmania spp in Lutzomyia longipalpis in the city of Lavras, Minas Gerais, Brazil. Braz J Med Biol Res 2019; 52:e8224. [PMID: 31482975 PMCID: PMC6719341 DOI: 10.1590/1414-431x20198224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 03/01/2019] [Accepted: 06/18/2019] [Indexed: 11/21/2022] Open
Abstract
Leishmaniasis is a neglected disease that affects a large part of the world population. Knowing the sand fly fauna of a region is of fundamental importance for guiding health surveillance actions related to the prevention and control of leishmaniasis. A total of 86 specimens of sand flies (60 females and 26 males) were collected. Using the classification proposed by Galati (2003), the following species were identified: Lutzomyia longipalpis (Lutz & Neiva, 1912), Migonemyia migonei (França, 1920), Evandromyia cortelezzi (Brethes, 1923), Ev. sallesi (Galvão & Coutinho, 1939), Nyssomyia whitmani (Atunes & Coutinho, 1939), Psathyromyia lutziana (Costa Lima, 1932), Ev. lenti (Mangabeira, 1938), Brumptomyia sp. (França and Parrot, 1921), and Pressatia sp. (Mangabeira, 1942). Using PCR with internal transcribed spacer target to identify infected sand flies, five Lu. longipalpis females were infected with Leishmania spp. Despite the small number of specimens collected, considerable species diversity was found in the study area.
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Affiliation(s)
- J C Castro
- Programa de Pós Graduação em Parasitologia, Departamento de Parasitologia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - L L Bueno
- Programa de Pós Graduação em Parasitologia, Departamento de Parasitologia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - T F Milagres
- Programa de Pós Graduação em Parasitologia, Departamento de Parasitologia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - F D Rêgo
- Grupo de Estudo em Leishmanioses, FIOCRUZ, Belo Horizonte, MG, Brasil
| | - C M F Gontijo
- Grupo de Estudo em Leishmanioses, FIOCRUZ, Belo Horizonte, MG, Brasil
| | - A P Peconick
- Programa de Pós Graduação em Ciências Veterinárias, Departamento de Medicina Veterinária, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - A J Andrade
- Departamento de Patologia Básica, Universidade Federal do Paraná, Curitiba, PR, Brasil
| | - T A Barçante
- Programa de Pós Graduação em Ciências da Saúde, Departamento de Ciências da Saúde, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - J M P Barçante
- Programa de Pós Graduação em Ciências da Saúde, Departamento de Ciências da Saúde, Universidade Federal de Lavras, Lavras, MG, Brasil
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Barçante TA, de Souza MV, Fernandes ACB, Barçante JMDP. Use of the polymerase chain reaction for the diagnosis of American tegumentary leishmaniasis. An Bras Dermatol 2019; 94:113-114. [PMID: 30726480 PMCID: PMC6360963 DOI: 10.1590/abd1806-4841.20197929] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Accepted: 05/16/2018] [Indexed: 11/21/2022] Open
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Narciso TP, Carvalho RC, Campos LC, Viana AG, Fujiwara RT, Barçante TA, Alvarenga IM, Barçante JMDP. First report of an autochthonous human visceral leishmaniasis in a child from the South of Minas Gerais State, Brazil. Rev Inst Med Trop Sao Paulo 2018; 61:e1. [PMID: 30570074 PMCID: PMC6300792 DOI: 10.1590/s1678-9946201961001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 05/07/2018] [Accepted: 07/19/2018] [Indexed: 12/02/2022] Open
Abstract
American visceral leishmaniasis (VL) is a vector-borne disease transmitted by
some species of phlebotomine sandflies from the genus
Lutzomyia. This neglected tropical zoonosis shows
increasing urbanization process, since the end of the 1980s. After the emergence
of foci of the disease in urban areas, VL has assumed an important role in
public health. Although VL is widely prevalent in several parts of the world,
diagnosing the illness is still difficult. We present a case of a 12-year-old
girl with a history of recurrent fever, anorexia, cachexia, chronic fatigue,
weight loss, left palpebral unilateral edema, persistent cough and pancytopenia.
A diagnosis of VL was performed using a reference immunochromatographic rapid
test. Identification of the infecting protozoan was directly obtained by PCR of
bone marrow. The patient responded favorably to treatment using liposomal
amphotericin B. This is the first report of human visceral leishmaniasis in the
city of Lavras in the South of Minas Gerais State. This first report of VL
highlighted the need of maintenance of permanent surveillance and control
programs in the city of Lavras, including the active search of sandflies, human
and canine cases. The current situation of Lavras should also be taken as an
alert to other near cities where favorable eco-epidemiological conditions may
exist.
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Lara LJ, Peconick AP, Fassani ÉJ, Júnior AMP, Chalfun PRB, Raymundo DL, Barçante TA, Barçante JMDP. Predicted philogeny, secondary conformational structure, and epitope antigenicity of immunological sequences in poultry. Genet Mol Res 2017; 16:gmr-16-02-gmr.16029423. [PMID: 28525653 DOI: 10.4238/gmr16029423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Poultry production is faced with different types of stresses that are responsible for issues of animal welfare as well as for economic losses. Moreover, the immunity decreases when animals are stressed. In silico analyses are important in reducing the cost and in increasing the accuracy of scientific results. A bioinformatics tool was used to perform ontology studies on 15 different immunological sequences of poultry. The mRNA structures and sequences with maximum antigenic residues were also predicted. No homology was found between the sequences of poultry and mammals. These results helped in the prediction of new potential molecular markers. Of the 15 sequences that were analyzed, predictions could not be made for five because they were longer than 2500 nucleotides; for the remaining 10 sequences, 20 conformational structures per sequence were predicted and the most stable sequences were identified by their minimum free energy values. The highest antigenic epitopes were accepted by the maximum scores; 15 of the total 8934 epitopes that were predicted were analyzed. These results would aid future studies that use synthetic peptides or recombinants as markers or immunomodulators and would expand our understanding on how stress can modulate the immune system. These would also help in developing rapid diagnostic tools, in increasing animal welfare, biosecurity, and productivity, and also in developing of food additives and environmental enrichment for stress control, thereby, making animal production more sustainable.
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Affiliation(s)
- L J Lara
- Departamento de Medicina Veterinária, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - A P Peconick
- Departamento de Medicina Veterinária, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - É J Fassani
- Departamento de Zootecnia, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - A M P Júnior
- Departamento de Medicina Veterinária, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - P R B Chalfun
- Departamento de Medicina Veterinária, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - D L Raymundo
- Departamento de Medicina Veterinária, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - T A Barçante
- Departamento de Ciências da Saúde, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - J M de P Barçante
- Departamento de Ciências da Saúde, Universidade Federal de Lavras, Lavras, MG, Brasil
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Guimarães GC, Barçante TA, Bezerra-Junior PS, Oliveira ADN, Rosa MCDB, Lopes GC, Barçante JMDP. Primeiro registro de um Mephitidae (Mammalia: Carnivora) naturalmente infectado por parasitos do gênero Physaloptera (Rudolphi, 1918) (Spirurida: Physalopteridae). Biotemas 2015. [DOI: 10.5007/2175-7925.2015v28n2p149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Barçante JMP, Barçante TA, Ribeiro VM, Oliveira-Junior SD, Dias SRC, Negrão-Corrêa D, Lima WS. Cytological and parasitological analysis of bronchoalveolar lavage fluid for the diagnosis of Angiostrongylus vasorum infection in dogs. Vet Parasitol 2008; 158:93-102. [PMID: 18842343 DOI: 10.1016/j.vetpar.2008.08.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2007] [Revised: 08/05/2008] [Accepted: 08/08/2008] [Indexed: 10/21/2022]
Abstract
Bronchoalveolar lavage (BAL) is a procedure that retrieves cells and other elements from the lungs for evaluation, which helps in the diagnosis of many pulmonary diseases. The aims of this work were to perform this procedure in dogs in the acute and chronic phases of an Angiostrongylus vasorum infection for cytological analysis and to evaluate the potential of this technique as a diagnostic method for this lung-heart worm. The BAL procedure was performed through the use of an endotracheal tube on seven A. vasorum infected dogs and on five non-infected dogs lined as a control group. Sixty days post-infection (dpi) active and live larvae were retrieved from the bronchoalveolar fluid (BALF) of all infected dogs. Furthermore, in one animal it was possible to retrieve larvae in its BALF before the pre-patent period. This work reports that the A. vasorum infection resulted in an increase of relative neutrophils and eosinophils counts. In contrast, there was a significant decrease in the alveolar macrophage relative count in infected animals from 60 to 330 dpi. This study shows that the BAL is an accurate technique for the diagnosis of canine angiostrongylosis. Moreover, the technique allows us to retrieve cells and other elements that line the lung surface for cytological evaluation, which provides information about inflammatory diseases, and the diagnosis and prognosis of pulmonary parasites such as A. vasorum.
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Affiliation(s)
- J M P Barçante
- Departamento de Parasitologia, Instituto de Ciências Biológicas (ICB), Universidade Federal de Minas Gerais (UFMG), Av. Presidente Antônio Carlos, 6627, Caixa Postal 486, Campus Pampulha, Minas Gerais, Brazil.
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Oliveira-Júnior SD, Barçante JMP, Barçante TA, Dias SRC, Lima WS. Larval output of infected and re-infected dogs with Angiostrongylus vasorum (Baillet, 1866) Kamensky, 1905. Vet Parasitol 2006; 141:101-6. [PMID: 16769176 DOI: 10.1016/j.vetpar.2006.05.003] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2005] [Revised: 04/25/2006] [Accepted: 05/02/2006] [Indexed: 11/23/2022]
Abstract
Canine angiostrongylosis is a nematode infection in domestic dogs and wild canids. A natural infection in a domestic dog frequently leads to pneumonia, loss of physical performance, coughing, anemia, cardiac insufficiency, pulmonary fibrosis and death. The main diagnostic method is based on the finding of Angiostrongylus vasorum first-stage larvae (L1) in infected dog feces. With this objective, 11 experimentally exposed to 100 third-stage larvae (L3) per kilogram of body weight (mean = 885.45 L3/animal; S.E. = 77.7). The animals were monitored for 300 days post-single-infection (PI) and the quantity of L1 output measured. Our results showed an irregular excretion of L1 and a variation in the pre-patent period (33-76 days) and the number of L1 excreted by individual animals (1-1261 L1/g). After 300 days PI, five dogs were exposed a second time and monitored for 300 days post-re-infection (PRI) (=600 days PI). The quantity of L1 output demonstrated that double exposed dogs also presented an irregular excretion of L1 but a smaller variation in the number of L1 excreted by individual animals (4-550 L1/g).
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Affiliation(s)
- S D Oliveira-Júnior
- Departamento de Parasitologia, Instituto de Ciências Biológicas (ICB), Universidade Federal de Minas Gerais (UFMG), Av Presidente Antônio Carlos, Campus Pampulha, Belo Horizonte, Minas Gerais, Brazil
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Hernández MX, Barçante TA, Vilela L, Tafuri WL, Afonso LCC, Vieira LQ. Vaccine-induced protection against Leishmania amazonensis is obtained in the absence of IL-12/23p40. Immunol Lett 2006; 105:38-47. [PMID: 16466810 DOI: 10.1016/j.imlet.2005.12.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2005] [Revised: 12/01/2005] [Accepted: 12/16/2005] [Indexed: 10/25/2022]
Abstract
Protozoa of the genus Leishmania are intracellular parasites of macrophages and may cause diverse clinical forms of leishmaniasis, including cutaneous, diffuse cutaneous, mucocutaneous and visceral leishmaniasis. Infection with L. major in mice indicates that a protective immune response is achieved when Th1 cells are developed. Thus, adoptive or vaccine-induced protection against leishmaniasis is largely dependent on cell-mediated immunity and IFN-gamma production. Induction of a Th1 response is dependent on the presence of IL-12 whilst lymphocytes are activated. This study was aimed at evaluating the role of IL-12 during infection with L. amazonensis and after vaccination with Leishvacin (killed Leishmania amazonensis promastigotes), since the role of this cytokine in vaccine-induced immunity with this preparation in experimental models or in humans is not yet elucidated. Hence, C57BL/6 interleukin-12-deficient mice (IL-12p40(-/-)) and wild-type controls (wt) were infected with L. amazonensis and the course of infection, parasite burden and cytokine production were compared. IL-12p40(-/-) mice were more susceptible to L. amazonensis than wt: lesions and parasite burden were larger in IL-12p40(-/-) when compared to wt. Interestingly, IL-4 was not produced in the absence of IL-12 in response to infection with L. amazonensis. To evaluate the role of IL-12 in the vaccine-induced immunity against L. amazonensis infection, IL-12p40(-/-) wt mice were vaccinated in the base of the tail and subsequently challenged with L. amazonensis in the footpads. Surprisingly, vaccinated IL-12p40(-/-) mice developed smaller lesions and had fewer parasites in footpads than non-vaccinated controls. Lymph node and spleen cells from vaccinated IL-12p40(-/-) mice did not produce high levels of IFN-gamma in response do in vitro stimulus with antigen. Hence, partial protection against infection with L. amazonensis could be obtained in the absence of functional IL-12 and a typical Th1 response.
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Affiliation(s)
- Mayra Xiomara Hernández
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas/ICB, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, MG, Brazil
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Oliveira-Júnior SD, Barçante JMP, Barçante TA, Ribeiro VM, Lima WS. Ectopic location of adult worms and first-stage larvae of Angiostrongylus vasorum in an infected dog. Vet Parasitol 2004; 121:293-6. [PMID: 15135869 DOI: 10.1016/j.vetpar.2004.02.018] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2003] [Revised: 02/04/2004] [Accepted: 02/22/2004] [Indexed: 10/26/2022]
Abstract
A mongrel dog with angiostrongylosis died suddenly and was submitted to necropsy. Post-mortem findings showed adult worms in ectopic locations. This is the first report of Angiostrongylus vasorum adult worms being found within the pericardial sac and in the lumen of the bladder of an infected dog. A total of 587 A. vasorum first-stage larvae were recovered from different organs and tissues after concentration using Baermann apparatus.
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Affiliation(s)
- S D Oliveira-Júnior
- Laboratório de Helmintologia Veterinária, Departamento de Parasitologia, Universidade Federal de Minas Gerais, ICB, Caixa Postal: 486, CEP 31270-901, Minas Gerias, Brazil
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Barçante TA, Barçante JMDP, Dias SRC, Lima WDS. Angiostrongylus vasorum (Baillet, 1866) Kamensky, 1905: emergence of third-stage larvae from infected Biomphalaria glabrata snails. Parasitol Res 2003; 91:471-5. [PMID: 14557873 DOI: 10.1007/s00436-003-1000-9] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2003] [Accepted: 08/26/2003] [Indexed: 11/25/2022]
Abstract
Biomphalaria glabrata snails were experimentally infected with Angiostrongylus vasorum first-stage larvae and divided into four groups of 30 snails. To assess the shedding of third-stage larvae (L3), the snails were maintained under different stimuli: group 1 60 W light bulb for 24 h, group 2 37 degrees C water bath for 24 h, group 3 room temperature (23-25 degrees C) for 24 h, Group 4 room temperature (23-25 degrees C) for up to 15 days. After 24 h, a total of 512 A. vasorum L3, alive and active, were released by snails from group 1, while 2,446 L3 were released from group 2 and five L3 from group 3. After 15 days, snails from group 4 released a total of 44 L3. To evaluate the infectivity of A. vasorum L3, two mongrel dogs were successfully infected with L3 released by snails from groups 1 and 2, confirming that the infection of dogs with A. vasorum L3 was possible, independently of ingestion of the mollusk intermediate host. The results shown in these experiments suggest that angiostrongylosis could be directly transmitted to the definitive hosts, with implications for the parasite's life cycle.
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Affiliation(s)
- Thales Augusto Barçante
- Departamento de Parasitologia, Instituto de Ciências Biológicas (ICB), Universidade Federal de Minas Gerais (UFMG), Av. Presidente Antônio Carlos 6627, Campus Pampulha, 31270-910, Belo Horizonte, Minas Gerais, Brazil
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Barçante JMP, Barçante TA, Dias SRC, Vieira LQ, Lima WS, Negrão-Corrêa D. A method to obtain axenic Angiostrongylus vasorum first-stage larvae from dog feces. Parasitol Res 2003; 89:89-93. [PMID: 12489005 DOI: 10.1007/s00436-002-0719-z] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2002] [Accepted: 07/10/2002] [Indexed: 10/27/2022]
Abstract
An improved method to obtain a large number of axenic larvae of Angiostrongylus vasorum from fecal samples was developed in the present study. The procedure here in reported consisted of obtaining larvae using a modified Baermann technique, followed by an additional filtration step. This isolation technique recovered almost 90% of the living larvae in a clean preparation. Isolated larvae were submitted to decontamination treatments with either sodium hypochlorite or antibiotic cocktail solutions. The axenic status, as confirmed by oral inoculation of decontaminated larvae into germ-free mice, was only achieved using larvae treated with 0.5% sodium hypochlorite solution for 10 min. The isolation and decontamination treatment did not affect larval viability. Treated larvae remained viable and infective to the invertebrate host.
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Affiliation(s)
- J M P Barçante
- Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida Presidente Antônio Carlos 6627, Campus Pampulha, CEP 31270-901 Belo Horizonte, Minas Gerais, Brazil
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