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Okino CH, Giglioti R, Bassetto CC, Silva PC, de Oliveira HN, de Sena Oliveira MC. Elimination of erroneous results related to bovine mononuclear cell immunophenotyping by antibodies binding to Fc receptors. Vet Immunol Immunopathol 2019; 213:109889. [DOI: 10.1016/j.vetimm.2019.109889] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 06/26/2019] [Accepted: 06/30/2019] [Indexed: 11/27/2022]
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Giglioti R, Bassetto CC, Okino CH, de Oliveira HN, de Sena Oliveira MC. Development of a loop-mediated isothermal amplification (LAMP) assay for the detection of Anaplasma marginale. EXPERIMENTAL & APPLIED ACAROLOGY 2019; 77:65-72. [PMID: 30478537 DOI: 10.1007/s10493-018-0327-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 11/19/2018] [Indexed: 06/09/2023]
Abstract
Parasitemia generated by Anaplasma marginale causes significant losses in the cattle industry. A major constraint to the effective control and management of anaplasmosis in livestock is the lack of a rapid and reliable diagnostic test to identify the parasite and allow for immediate therapy. In the present study, we developed a novel DNA-based assay for the detection of A. marginale in bovine blood samples, using loop-mediated isothermal amplification (LAMP). DNA from six cattle and hemoparasite samples (Babesia bovis, Babesia bigemina, Anaplasma centrale and A. marginale) were tested for specificity, sensitivity and cross-reactions. The developed LAMP procedures were also confirmed and compared with the qPCR method. The same gene sequence (major surface protein 1b, msp1b) of A. marginale was used to design a set of primers for the LAMP and qPCR assays. The results showed that LAMP is specific, as no positive signal was observed for the other tested hemoparasites. However, the sensitivity of the qPCR assay was ten times higher than LAMP. Our findings indicate that this LAMP method has a good sensitivity and high specificity for the detection of A. marginale and may have a potential application in the detection and differentiation of bovine anaplasmosis.
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Maiorano AM, Giglioti R, Oliveira MCS, Oliveira HN, Cyrillo JNSG, Mercadante MEZ, Silva JAIIV. Resistance to the tick Rhipicephalus microplus and Babesia bovis infection levels in beef heifers raised in an endemic area of Sao Paulo state, Brazil. ANIMAL PRODUCTION SCIENCE 2019. [DOI: 10.1071/an17157] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Repeatability coefficients (r) for tick resistance and Babesia bovis infection levels and the correlation (ρ) between these traits were estimated in beef heifers, using artificial infestations and short intervals between measurements. Forty heifers, including 20 Bos taurus taurus (Caracu) and 20 Bos taurus indicus (Nelore) animals, were submitted to three artificial infestations with Rhipicephalus microplus larvae at intervals of 14 days. The number of standard female was counted from the 19th through the 23rd day after each infestation, considering only the left side of each animal. Blood samples were collected on Days 0, 6, 20, 34 and 48 after the first infestation. The number of copies of B. bovis DNA (CN) was estimated from blood samples through the quantitative PCR technique to evaluate the level of infection in the animals. Total tick count (TTC), the percentage of return (PRij) and CN were analysed using the MIXED procedure of the SAS program. The r of the variables were estimated by intraclass correlation between measures of the same animal, with the variance component of the animal being divided by the phenotypic variance (residual + animal), using models with a CS structure matrix. Additionally, ρ among variables were estimated using the CORR procedure. The following results were obtained for Caracu and Nelore animals, respectively: 1.83 ± 0.37 and 0.63 ± 0.40 for TTC, 1.10 ± 0.23 and 0.47 ± 0.23 for PRij, and 2.29 ± 0.64 and 2.32 ± 0.58 for CN. The r was moderate for TTC (0.62) and PRij (0.53) and low for CN (0.10). The ρ between TTC and CN obtained in the same measurement day was not significant in either breed (P > 0.05; –0.07 for Caracu and 0.19 for Nelore). Results showed both breeds were able to develop resistance against B. bovis; however, Nelore exhibited higher tick resistance. The r obtained for CN and the weak association with tick resistance indicate that it is not possible to recommend the use of CN as a trait to predict tick resistance in these two breeds.
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Cavani L, Giglioti R, Hiromi Okino C, Cristina Gulias-Gomes C, Soares Campos G, Rodrigues Caetano A, Cristina de Sena Oliveira M, Flores Cardoso F, Jordão de Magalhães Rosa G, Nunes de Oliveira H. PSXIV-28 Genetic correlation between level of Babesia bovis, tick count and weight gain in Braford and Hereford cattle. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Figueiredo A, Agnolon IC, Lopes LG, Giglioti R, de Souza Chagas AC. Comparative study of hatching estimation methods of Rhipicephalus (Boophilus) microplus eggs. Vet Parasitol 2018; 264:35-38. [PMID: 30503088 DOI: 10.1016/j.vetpar.2018.10.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 10/02/2018] [Accepted: 10/20/2018] [Indexed: 11/30/2022]
Abstract
Reproductive parameters of Rhipicephalus (Boophilus) microplus are often evaluated. They are good indicators of resistance to commercial acaricides and of plant extracts' efficacy. The objective of this study was to compare the techniques: visual estimation and quantification by sampling used in the Adult Immersion Test (AIT) to calculate the hatching rate of eggs. Engorged females collected from cattle were subjected to the AIT with plant extracts and kept in an incubator for oviposition. The egg hatching was evaluated in 210 syringes by visual estimation (%). Then, eggs and larvae were counted into samples of 100 individuals, in three repetitions by stereo microscope. Significant differences were found between the two tests (p≤ 0.05). The egg hatching average of visual estimation was higher than the quantification by sampling, 56.8-48.0, respectively (correlation = 0.85). We found that the visual assessment leads to a higher estimate of larvae in relation to eggs, because the infertile eggs can be concealed in the center of the syringe. In quantification by sampling, no statistical differences (p = 0.99) were observed in the pairwise counts between the three samples (48.1 ± 26.6%, 47.8 ± 26.9%, 48.1 ± 26.5%) (correlation of repetitions = 0.96). This suggests that counting one sample is sufficient and the result should not differ much, regardless of the evaluator. Regarding the cutoff point of tick resistance status (95%), both methods are reliable. This study contributes to improvement of the AIT and can stimulate researchers to choose more accurate techniques for the assessment of egg hatching.
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Okino CH, Giglioti R, Silva PC, de Oliveira HN, de Sena Oliveira MC. Comparative evaluation of DNA extraction kit, matrix sample and qPCR assays for bovine babesiosis monitoring. Mol Biol Rep 2018; 45:2671-2680. [DOI: 10.1007/s11033-018-4436-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 10/10/2018] [Indexed: 10/28/2022]
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Gonçalves T, Alencar M, Giglioti R, Bilhassi T, Oliveira H, Rabelo M, Esteves S, Oliveira M. Resistance of sheep from different genetic groups to gastrointestinal nematodes in the state of São Paulo, Brazil. Small Rumin Res 2018. [DOI: 10.1016/j.smallrumres.2018.07.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Giglioti R, de Oliveira HN, Okino CH, de Sena Oliveira MC. qPCR estimates of Babesia bovis and Babesia bigemina infection levels in beef cattle and Rhipicephalus microplus larvae. EXPERIMENTAL & APPLIED ACAROLOGY 2018; 75:235-240. [PMID: 29728802 DOI: 10.1007/s10493-018-0260-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 04/28/2018] [Indexed: 06/08/2023]
Abstract
Babesia spp. are tick-transmitted intraerythrocytic apicomplexan parasites that infect wild and domestic animals. Babesia bovis and B. bigemina are endemic and responsible for enormous economic losses to the livestock industry in most of the Brazilian territory, wherein the tick Rhipicephalus microplus is the unique vector. Better understanding of epidemiology and parasite-host interactions may improve the tools for disease control and genetic management for selection of resistant animals. This study aimed to detect, quantify and measure the correlation between B. bigemina and B. bovis infection levels in bovine blood and into tick, by absolute quantification of hemoparasite DNA using qPCR. Blood bovine samples and larvae pools from 10 engorged R. microplus females were collected from each Canchim heifers (5/8 Charolais + 3/8 zebu, n = 36). All evaluated samples were positive for both Babesia species tested. Correlations of B. bovis and B. bigemina levels between cattle and tick host were 0.58 and 0.66, respectively. These high positive correlation coefficients indicate that parasitemia load in the bovine may be dependent on or may determine the parasitemia load in the ticks.
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Charlie-Silva I, Giglioti R, Magalhães PM, Sousa IMO, Foglio MA, Oliveira MCS, Chagas ACS. Lack of impact of dietary inclusion of dried Artemisia annua leaves for cattle on infestation by Rhipicephalus (Boophilus) microplus ticks. Ticks Tick Borne Dis 2018; 9:1115-1119. [PMID: 29693549 DOI: 10.1016/j.ttbdis.2018.04.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 04/02/2018] [Accepted: 04/06/2018] [Indexed: 10/17/2022]
Abstract
The present study evaluated whether a natural dietary additive, dried Artemisia annua leaves, may be useful to control Rhipicephalus (Boophilus) microplus on naturally infested cattle. Twenty heifers of the Canchim breed, weighing around 250 kg, were divided into two equally sized experimental groups: 1) control animals and 2) animals receiving 200 g/day of dried A. annua leaves for two months. Before treatment began, the animals were homogeneously distributed in control and treatment groups based on their pre-treatment weight and tick infestation level. Counts of engorged female ticks then occurred weekly during the two-month experimental period. We also monitored cattle weight gain and packed cell volume (PCV). Artemisinin (0.96%) was quantified in the plant material by high-performance liquid chromatography with refractive index detector (HPLC-IR). No statistical differences between the control and treatment groups were observed for engorged female counts (log averages of 1.3 ticks and 1.4 ticks per animal, respectively), daily cattle weight gain (0.910 kg and 0.888 kg, respectively) or PCV (33.5% and 33.0%, respectively). We conclude that the oral supplementation of cattle feed with dried A. annuna leaves did not control natural infestation of R. (B.) microplus. The hypothesis of artemisinin's action on cattle ticks by ingestion through the animals' blood was not confirmed at the evaluated dose.
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Figueiredo A, Nascimento LM, Lopes LG, Giglioti R, Albuquerque RDDG, Santos MG, Falcão DQ, Nogueira JAP, Rocha L, Chagas ACS. First report of the effect of Ocotea elegans essential oil on Rhipicephalus (Boophilus) microplus. Vet Parasitol 2018; 252:131-136. [PMID: 29559134 DOI: 10.1016/j.vetpar.2018.02.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 02/05/2018] [Accepted: 02/06/2018] [Indexed: 10/18/2022]
Abstract
Rhipicephalus (Boophilus) microplus is responsible for reducing animal welfare, causing a drop in productive performance and transmitting hemoparasites. The main strategy of tick control is application of synthetic acaricides. However, parasite resistance to these compounds is a major concern. Therefore, the acaricidal and repellent in vitro effect of the Ocotea elegans essential oil on larvae and adult females of R. (B.) microplus were evaluated. The larval packet test (LPT), larval repellency test (RT) and adult immersion test (AIT) were performed. The essential oil was analyzed by gas chromatography (GC/FID) and the structure of the oil's major constituent (92.2% sesquirosefuran) was elucidated by nuclear magnetic resonance. In the AIT, efficacy higher than 90% was detected from the concentration 25 mg/mL upward. In both LPTs performed after 48 h, only the 100 mg/mL concentration resulted in mortalities above 70%. On the other hand, the essential oil caused an average of 95.8% repellency from 0.78 to 100 mg/mL. The LC50 in the two LPT (48 h) tests were 59.68 and 25.59 mg/mL, respectively. The LC50 and LC90 in the AIT were 4.96 and 17.37 mg/mL, and in the RT they were 0.04 and 1.24 mg/mL respectively. We conclude that the essential oil of O. elegans leaves has a significant acaricidal effect on engorged females and on larval repellency of R. (B.) microplus ticks, and can be a promising alternative for the control of this ectoparasite.
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Giglioti R, de Oliveira HN, Bilhassi TB, Portilho AI, Okino CH, Marcondes CR, de Sena Oliveira MC. Estimates of repeatability and correlations of hemoparasites infection levels for cattle reared in endemic areas for Rhipicephalus microplus. Vet Parasitol 2018; 250:78-84. [DOI: 10.1016/j.vetpar.2017.12.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Revised: 12/01/2017] [Accepted: 12/11/2017] [Indexed: 02/05/2023]
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Cavani L, Cardoso FF, Gomes CG, Caetano AR, Giglioti R, Oliveira MCDS, Oliveira HN. 205 Estimates of genetic parameter for tick count and infection level of Babesia Bovis traits in Braford and Hereford cattle. J Anim Sci 2017. [DOI: 10.2527/asasann.2017.205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Giglioti R, Oliveira HN, Ibelli AMG, Bilhassi TB, Néo TA, Santana CH, Rabelo MD, Machado RZ, de Souza Chagas AC, de Sena Oliveira MC. Neither quantification by qPCR nor quantitative Elisa can be used to discriminate Angus cattle for resistance/susceptibility to Babesia bovis. Ticks Tick Borne Dis 2017; 8:335-340. [DOI: 10.1016/j.ttbdis.2016.11.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 10/31/2016] [Accepted: 11/19/2016] [Indexed: 10/20/2022]
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Cavani L, Santana CH, Giglioti R, Bilhassi TB, Oliveira MCDS, Carvalheiro R, Oliveira HN. 0334 Genome-wide association study for tick count and infection level of Babesia bovis traits in Angus cattle. J Anim Sci 2016. [DOI: 10.2527/jam2016-0334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Santana RC, Zafalon LF, Brandão HDM, A.F. Junior G, Pilon LE, B. Junior W, Giglioti R, Mosqueira VCF. Uso de antimicrobiano nanoparticulado para o tratamento da mastite subclínica de ovelhas de corte no período seco. PESQUISA VETERINARIA BRASILEIRA 2016. [DOI: 10.1590/s0100-736x2016000900006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Resumo: A inflamação da glândula mamária é uma das principais causas de prejuízo na ovinocultura. Este estudo teve como objetivo investigar as taxas de cura do tratamento da mastite subclínica após infusão intramamária de princípio ativo antimicrobiano no momento da secagem, em formulações convencional e nanoparticulada. Os rebanhos estavam localizados em São Carlos, São Paulo, Brasil. Analisou-se um total de 584 glândulas mamárias de 307 ovelhas de aptidão para produção de carne. Triagem prévia dos casos subclínicos de mastite foi efetuada por meio do California Mastitis Test (CMT) e/ou da contagem de células somáticas (CCS). Análises microbiológicas foram realizadas para confirmação da etiologia infecciosa. As glândulas mamárias com mastite subclínica foram distribuídas em três grupos: G1 (Controle; glândulas mamárias que não receberam tratamento antimicrobiano); G2 (glândulas mamárias em que foi administrado 100 mg de cloxacilina benzatina em estrutura convencional) e G3 (glândulas mamárias em que foi administrado 50 mg de cloxacilina benzatina em estrutura nanoencapsulada). O tratamento aplicado ao G3 mostrou-se mais eficiente (P=0,047) na cura de glândulas mamárias com mastite subclínica. O uso da cloxacilina nanoencapsulada no momento da secagem de ovelhas de corte auxilia no controle da mastite subclínica infecciosa e reduz os prejuízos consequentes.
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Giglioti R, Guimarães S, Oliveira-Sequeira TC, David EB, Brito LG, Huacca ME, Chagas AC, Oliveira MC. Proteolytic activity of excretory/secretory products of Cochliomyia hominivorax larvae (Diptera: Calliphoridae). PESQUISA VETERINARIA BRASILEIRA 2016. [DOI: 10.1590/s0100-736x2016000800006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract: The protein profiles and proteolytic activity of the excretory secretory products (E/SP) of the first (L1), second (L2) and third (L3) larval stages of Cochliomyia hominivorax were studied in the laboratory. Analysis on the E/SP protein profile was carried out using polyacrylamide gel containing sodium dodecyl sulfate (SDS-PAGE). The E/SP of each larval stage (L1, L2 and L3) treated with protease inhibitors, containing 30μg, 40μg and 50μg of protein, was applied to the 10% polyacrylamide gel. The proteolytic activity of the crude E/SP was analyzed in gels copolymerized with gelatin and by colorimetric assays using azocasein as a substrate, with the characterization of the proteases using synthetic inhibitors. Different protein profiles were observed for the larval instars, with L1 presenting the most complex profile. Nevertheless, various protein bands were observed that were common to all the larval instars. The E/SP of all the instars showed proteolytic activity on gelatin, evidenced by proteolysis zones, predominantly with apparently higher molecular masses in L1, while for L2 and L3 the proteolysis zones could also be observed in regions with lower masses. Tests with protease inhibitors using gelatin as substrate showed that the E/SP of larvae were mainly composed of serine proteases. Additionally, inhibition was observed in L2 E/SP treated previously with EDTA, an inhibitor of metalloproteases. The assays with azocasein revealed a gradual increase of proteolytic activity on this substrate with larval development progress, with the strongest inhibitions being observed after treatments with 3,4-dichloroisocoumarin (DCI) for E/SP of L1, L2 and L3. These results suggest that C. hominivorax larvae produce different proteases, a fact that can be related to the parasite's vital processes for survival, such as penetration into the host's tissues and nutrition during the larval stage.
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Giglioti R, Oliveira H, Santana C, Ibelli A, Néo T, Bilhassi T, Rabelo M, Machado R, Brito L, Oliveira M. Babesia bovis and Babesia bigemina infection levels estimated by qPCR in Angus cattle from an endemic area of São Paulo state, Brazil. Ticks Tick Borne Dis 2016; 7:657-662. [DOI: 10.1016/j.ttbdis.2016.02.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 12/16/2015] [Accepted: 02/10/2016] [Indexed: 11/27/2022]
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Chagas ACDS, Oliveira MCDS, Giglioti R, Santana RCM, Bizzo HR, Gama PE, Chaves FCM. Efficacy of 11 Brazilian essential oils on lethality of the cattle tick Rhipicephalus (Boophilus) microplus. Ticks Tick Borne Dis 2016; 7:427-32. [PMID: 26867819 DOI: 10.1016/j.ttbdis.2016.01.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 01/04/2016] [Accepted: 01/04/2016] [Indexed: 11/30/2022]
Abstract
Herbal extracts have been investigated as an alternative for parasite control, aiming to slow the development of resistance and to obtain low-cost biodegradable parasiticides. The goal of this study was to evaluate the efficacy, in vitro, of 11 essential oils from Brazil on reproductive efficiency and lethality of the cattle tick Rhipicephalus (Boophilus) microplus. The effects of oils extracted from Curcuma longa, Zingiber officinale, Lippia alba, Lippia gracilis, Lippia origanoides, Lippia sidoides, Mentha arvensis, Mentha piperita, Croton cajucara (white and red), and Croton sacaquinha on ticks were investigated by the Immersion Test with Engorged Females (ITEF) and the modified Larval Packet Test (LPT). Distilled water and 2% Tween 80 were used as control treatments. Chemical analysis of the oils was done with gas chromatography coupled with mass spectrometry. Analysis of the in vitro tests using Probit (SAS program) allowed the calculation of lethal concentrations (LCs). Lower reproductive efficiency indexes and higher efficacy percentages in the ITEF were obtained with the oils extracted from C. longa (24 and 71%, respectively) and M. arvensis oils (27 and 73%, respectively). Lower LC50 was reached with C. longa (10.24 mg/mL), L. alba (10.78 mg/mL), M. arvensis (22.31 mg/mL), L. sidoides (27.67 mg/mL), and C. sacaquinha (29.88 mg/mL) oils. In the LPT, species from Zingiberaceae and Verbenaceae families caused 100% lethality at 25 mg/mL, except for L. sidoides. The most effective oils were from C. longa, L. gracilis, L. origanoides, L. alba, and Z. officinale. The LC50 and LC90 were, respectively: 0.54 and 1.80 mg/mL, 3.21 and 7.03 mg/mL, 3.10 and 8.44 mg/mL, 5.85 and 11.14 mg/mL, and 7.75 and 13.62 mg/mL. The efficacy was directly related to the major components in each essential oil, and the oils derived from Croton genus presented the worst performance, suggesting the absence of synergistic effect among its compounds. Since C. longa, containing 62% turmerone, was the one most efficient against ticks, this compound may be potentially used for tick control, but further research is needed, especially to assess toxicity of these compounds to the host. These new studies, together with the results presented here, may provide a strong rationale for designing pre-clinical and clinical studies with these agents.
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Néo TA, Giglioti R, Obregón D, Bilhassi TB, Oliveira HN, Machado RZ, Aníbal FDF, Brito LG, Malagó Jr. W, Bressani FA, Oliveira MCS. Detection of <i>Babesia bovis</i> and <i>Babesia bigemina</i> in Water Buffaloes (<i>Bubalus bubalis</i>) in Endemic Areas of São Paulo State, Brazil. ACTA ACUST UNITED AC 2016. [DOI: 10.4236/ojvm.2016.65009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Bressani FA, Tizioto PC, Giglioti R, Meirelles SLC, Coutinho R, Benvenuti CL, Malagó W, Mudadu MA, Vieira LS, Zaros LG, Carrilho E, Regitano LCA. Single nucleotide polymorphisms in candidate genes associated with gastrointestinal nematode infection in goats. GENETICS AND MOLECULAR RESEARCH 2014; 13:8530-6. [PMID: 25366747 DOI: 10.4238/2014.october.20.29] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Cytokines are small cell-signaling proteins that play an important role in the immune system, participating in intracellular communication. Four candidate genes of the cytokine family (IL2, IL4, IL13, and IFNG) were selected to identify Single Nucleotide Polymorphisms (SNPs) that might be associated with resistance to gastrointestinal endoparasites in goats. A population of 229 goats, F2 offspring from an F1 intercross was produced by crossing pure Saanen goats, considered as susceptible to gastrointestinal endoparasites, with pure Anglo-Nubian goats, considered resistant. Blood was collected for DNA extraction and fecal samples were also collected for parasite egg count. Polymorphisms were prospected by sequencing animals with extreme phenotype for fecal egg count (FEC) distribution. The association between SNPs and phenotype was determined by using the Fisher exact test with correction for multiple tests. Three of the 10 SNPs were identified as significant (P ≤ 0.03). They were found in intron 1 of IL2 (ENSBTA00000020883), intron 3 of IL13 (ENSBTA00000015953) and exon 3 of IFNG (ENSBTA00000012529), suggesting an association between them and gastrointestinal endoparasite resistance. Further studies will help describe the effects of these markers accurately before implementing them in marker assisted selection. This study is the pioneer in describing such associations in goats.
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Bilhassi TB, Oliveira HN, Ibelli AM, Giglioti R, Regitano LC, Oliveira-Sequeira TC, Bressani FA, Malagó W, Resende FD, Oliveira MC. Quantitative study of Babesia bovis infection in beef cattle from São Paulo state, Brazil. Ticks Tick Borne Dis 2014; 5:234-8. [DOI: 10.1016/j.ttbdis.2013.11.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2013] [Revised: 10/25/2013] [Accepted: 11/04/2013] [Indexed: 12/01/2022]
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Domingues LF, Giglioti R, Feitosa KA, Fantatto RR, Rabelo MD, de Sena Oliveira MC, Bechara GH, de Oliveira GP, Barioni Junior W, de Souza Chagas AC. In vitro and in vivo evaluation of the activity of pineapple (Ananas comosus) on Haemonchus contortus in Santa Inês sheep. Vet Parasitol 2013; 197:263-70. [DOI: 10.1016/j.vetpar.2013.04.031] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Revised: 04/15/2013] [Accepted: 04/21/2013] [Indexed: 11/25/2022]
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48
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Domingues LF, Giglioti R, Feitosa KA, Fantatto RR, Rabelo MD, Oliveira MCDS, Oliveira GPD, Bechara GH, Chagas ACDS. In vitro activity of pineapple extracts (Ananas comosus, Bromeliaceae) on Rhipicephalus (Boophilus) microplus (Acari: Ixodidae). Exp Parasitol 2013; 134:400-4. [DOI: 10.1016/j.exppara.2013.03.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Revised: 02/21/2013] [Accepted: 03/17/2013] [Indexed: 10/27/2022]
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49
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Brito LG, Rocha RB, Barbieri FDS, Ribeiro ES, Vendrami FB, Souza GC, Giglioti R, Regitano LC, Falcoski TO, Tizioto PC, Oliveira MC. Babesia bovis infection in cattle in the southwestern Brazilian Amazon. Ticks Tick Borne Dis 2013; 4:78-82. [DOI: 10.1016/j.ttbdis.2012.08.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Revised: 08/03/2012] [Accepted: 08/06/2012] [Indexed: 10/27/2022]
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50
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Chagas ACS, Katiki LM, Silva IC, Giglioti R, Esteves SN, Oliveira MCS, Barioni W. Haemonchus contortus: A multiple-resistant Brazilian isolate and the costs for its characterization and maintenance for research use. Parasitol Int 2013; 62:1-6. [DOI: 10.1016/j.parint.2012.07.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Revised: 07/02/2012] [Accepted: 07/09/2012] [Indexed: 10/28/2022]
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