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Santiago GG, Siqueira F, Cardoso FF, Regitano LCA, Ventura R, Sollero BP, Souza MD, Mokry FB, Ferreira ABR, Torres RAA. Genomewide association study for production and meat quality traits in Canchim beef cattle. J Anim Sci 2018; 95:3381-3390. [PMID: 28805909 DOI: 10.2527/jas.2017.1570] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The commercial value of the bovine carcass is determined by a set of traits, such as weight, yield, back fat thickness, and marbling; therefore, the genetic improvement of growth, meat, and carcass quality traits is an important tool to add value to the supply chain. Genomewide association studies (GWAS) enable the identification of loci that control phenotypic expression of quantitative traits (QTL). Therefore, the objective of this work was to perform a GWAS to identify genomic regions and genes associated with growth, carcass traits, and meat quality in Canchim beef cattle. These traits were yearling weight (YW), rib eye area (REA), back fat thickness (BFT), and marbling (MARB). To increase sample size and marker density, genotype imputation was performed, and only markers imputed with greater than 95% accuracy were used. Genomewide association study was performed using a Bayesian approach, by the Bayes B statistical method, incorporating genotypes and phenotypes from 614 animals from both the Canchim breed and the MA genetic group (offspring of Charolais bulls and one-half Canchim + one-half Zebu cows). This investigation identified 1 and 4 genomic regions explaining 0.23 and 7.35% of the genetic variance for REA and YW, respectively. These regions harbor a total of 19 genes, 7 of which were classified for biological functions by functional analysis. Significant associations were not observed for BFT and MARB. The identification of QTL that had been previously described in the literature reinforces associations found in this study.
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de Toledo-Pinto TG, Ferreira ABR, Ribeiro-Alves M, Rodrigues LS, Batista-Silva LR, Silva BJDA, Lemes RMR, Martinez AN, Sandoval FG, Alvarado-Arnez LE, Rosa PS, Shannon EJ, Pessolani MCV, Pinheiro RO, Antunes SLG, Sarno EN, Lara FA, Williams DL, Ozório Moraes M. STING-Dependent 2'-5' Oligoadenylate Synthetase-Like Production Is Required for Intracellular Mycobacterium leprae Survival. J Infect Dis 2016; 214:311-20. [PMID: 27190175 DOI: 10.1093/infdis/jiw144] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Accepted: 03/30/2016] [Indexed: 12/13/2022] Open
Abstract
Cytosolic detection of nucleic acids elicits a type I interferon (IFN) response and plays a critical role in host defense against intracellular pathogens. Herein, a global gene expression profile of Mycobacterium leprae-infected primary human Schwann cells identified the genes differentially expressed in the type I IFN pathway. Among them, the gene encoding 2'-5' oligoadenylate synthetase-like (OASL) underwent the greatest upregulation and was also shown to be upregulated in M. leprae-infected human macrophage cell lineages, primary monocytes, and skin lesion specimens from patients with a disseminated form of leprosy. OASL knock down was associated with decreased viability of M. leprae that was concomitant with upregulation of either antimicrobial peptide expression or autophagy levels. Downregulation of MCP-1/CCL2 release was also observed during OASL knock down. M. leprae-mediated OASL expression was dependent on cytosolic DNA sensing mediated by stimulator of IFN genes signaling. The addition of M. leprae DNA enhanced nonpathogenic Mycobacterium bovis bacillus Calmette-Guerin intracellular survival, downregulated antimicrobial peptide expression, and increased MCP-1/CCL2 secretion. Thus, our data uncover a promycobacterial role for OASL during M. leprae infection that directs the host immune response toward a niche that permits survival of the pathogen.
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Affiliation(s)
| | | | - Marcelo Ribeiro-Alves
- Laboratório de Hanseníase Laboratório de Pesquisa em Farmacogenética, Instituto de Pesquisa Clínica Evandro Chagas, FIOCRUZ-RJ, Rio de Janeiro
| | - Luciana Silva Rodrigues
- Laboratório de Microbiologia Celular, Pavilhão de Hanseníase, Instituto Oswaldo Cruz, FIOCRUZ
| | | | | | | | | | - Felipe Galvan Sandoval
- National Hansen's Disease Programs, Bureau of Primary Health Care, Health Resources and Services Administration Laboratory Research Branch, School of Veterinary Medicine, Louisiana State University, Baton Rouge
| | | | | | - Edward Joseph Shannon
- National Hansen's Disease Programs, Bureau of Primary Health Care, Health Resources and Services Administration Laboratory Research Branch, School of Veterinary Medicine, Louisiana State University, Baton Rouge
| | | | | | | | | | - Flávio Alves Lara
- Laboratório de Microbiologia Celular, Pavilhão de Hanseníase, Instituto Oswaldo Cruz, FIOCRUZ
| | - Diana Lynn Williams
- National Hansen's Disease Programs, Bureau of Primary Health Care, Health Resources and Services Administration Laboratory Research Branch, School of Veterinary Medicine, Louisiana State University, Baton Rouge
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Cavalcanti AS, Ribeiro-Alves M, Pereira LDOR, Mestre GL, Ferreira ABR, Morgado FN, Boité MC, Cupolillo E, Moraes MO, Porrozzi R. Parasite load induces progressive spleen architecture breakage and impairs cytokine mRNA expression in Leishmania infantum-naturally infected dogs. PLoS One 2015; 10:e0123009. [PMID: 25875101 PMCID: PMC4395300 DOI: 10.1371/journal.pone.0123009] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 02/26/2015] [Indexed: 11/18/2022] Open
Abstract
Canine Visceral Leishmaniasis (CVL) shares many aspects with the human disease and dogs are considered the main urban reservoir of L. infantum in zoonotic VL. Infected dogs develop progressive disease with a large clinical spectrum. A complex balance between the parasite and the genetic/immunological background of the host are decisive for infection evolution and clinical outcome. This study comprised 92 Leishmania infected mongrel dogs of various ages from Mato Grosso, Brazil. Spleen samples were collected for determining parasite load, humoral response, cytokine mRNA expression and histopathology alterations. By real-time PCR for the ssrRNA Leishmania gene, two groups were defined; a low (lowP, n = 46) and a high parasite load groups (highP, n = 42). When comparing these groups, results show variable individual humoral immune response with higher specific IgG production in infected animals but with a notable difference in CVL rapid test optical densities (DPP) between highP and lowP groups. Splenic architecture disruption was characterized by disorganization of white pulp, more evident in animals with high parasitism. All cytokine transcripts in spleen were less expressed in highP than lowP groups with a large heterogeneous variation in response. Individual correlation analysis between cytokine expression and parasite load revealed a negative correlation for both pro-inflammatory cytokines: IFNγ, IL-12, IL-6; and anti-inflammatory cytokines: IL-10 and TGFβ. TNF showed the best negative correlation (r2 = 0.231; p<0.001). Herein we describe impairment on mRNA cytokine expression in leishmania infected dogs with high parasite load associated with a structural modification in the splenic lymphoid micro-architecture. We also discuss the possible mechanism responsible for the uncontrolled parasite growth and clinical outcome.
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Affiliation(s)
- Amanda S. Cavalcanti
- Laboratório de Pesquisas em Leishmaniose, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brasil
- * E-mail:
| | - Marcelo Ribeiro-Alves
- Laboratório de Pesquisa Clínica em DST-AIDS, Instituto de Pesquisa Clínica Evandro Chagas, Fiocruz, Rio de Janeiro, Brasil
| | - Luiza de O. R. Pereira
- Laboratório Interdisciplinar de Pesquisas Médicas, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brasil
| | | | | | - Fernanda N. Morgado
- Laboratório de Pesquisas em Leishmaniose, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brasil
| | - Mariana C. Boité
- Laboratório de Pesquisas em Leishmaniose, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brasil
| | - Elisa Cupolillo
- Laboratório de Pesquisas em Leishmaniose, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brasil
| | - Milton O. Moraes
- Laboratório de Hanseníase, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brasil
| | - Renato Porrozzi
- Laboratório de Pesquisas em Leishmaniose, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brasil
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Peçanha R, Bagno LDLES, Ribeiro MB, Robottom Ferreira AB, Moraes MO, Zapata-Sudo G, Kasai-Brunswick TH, Campos-de-Carvalho AC, Goldenberg RCDS, Saar Werneck-de-Castro JP. Adipose-derived stem-cell treatment of skeletal muscle injury. J Bone Joint Surg Am 2012; 94:609-17. [PMID: 22488617 DOI: 10.2106/jbjs.k.00351] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND The aim of the present study was to investigate whether adipose-derived stem cells could contribute to skeletal muscle-healing. METHODS Adipose-derived stem cells of male rats were cultured and injected into the soleus muscles of female rats. Two and four weeks after injections, muscles were tested for tetanic force (50 Hz). Histological analysis was performed to evaluate muscle collagen deposition and the number of centronucleated muscle fibers. In order to track donor cells, chimerism was detected with use of real-time polymerase chain reaction targeting the male sex-determining region Y (SRY) gene. RESULTS Two weeks after cell injection, tetanus strength and the number of centronucleated regenerating myofibers, as well as the number of centronucleated regenerating myofibers, were higher in the treated group than they were in the control group (mean and standard error of the mean, 79.2 ± 5.0% versus 58.3 ± 8.1%, respectively [p < 0.05]; and 145 ± 36 versus 273 ± 18 per 10³ myofibers, respectively [p < 0.05]). However, there were no significant differences at four weeks. Treatment did not decrease collagen deposition. Male gene was not detected in female host tissue at two and four weeks after engraftment by polymerase chain reaction analysis. CONCLUSIONS Adipose-derived stem-cell therapy increased muscle repair and force at two weeks, but not four weeks, after injection, suggesting that adipose-derived stem-cell administration may accelerate muscle repair; however, the rapid disappearance of injected cells suggests a paracrine mechanism of action.
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Affiliation(s)
- Ramon Peçanha
- Escola de Educação Física e Desportos-CCS, Laboratório de Biologia do Exercício, Departamento de Biociência e Atividade Física, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 540 Ilha do Fundão, Rio de Janeiro, 21941-599, Brazil
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Rebello KM, Britto C, Pereira BAS, Pita-Pereira DD, Moraes MO, Ferreira ABR, Cysne-Finkelstein L, Otto TD, Côrtes LMDC, da-Silva GG, Alves CR. Leishmania (Viannia) braziliensis: influence of successive in vitro cultivation on the expression of promastigote proteinases. Exp Parasitol 2010; 126:570-6. [PMID: 20553928 DOI: 10.1016/j.exppara.2010.06.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2009] [Revised: 06/01/2010] [Accepted: 06/02/2010] [Indexed: 11/24/2022]
Abstract
Cysteine proteinases are an important virulence factor in Leishmania parasites. In this study we analyzed the cysteine proteinase expression of infective Leishmania (Viannia) braziliensis promastigotes, examining the expression induced by successive in vitro passages in culture. We observed that this parasite presents a decrease in its virulence over BALB/c macrophages, after successive passages in culture, but still they present proteinase activity, being capable of hydrolyzing the substrate pGlu-Phe-Leu-p Nitroanilide at pH 7.0. This proteinase activity also decreases in the course of the successive passages. Additionally, the decrease in the amount of CPB proteins following successive passages of promastigotes was verified by immunoblotting assays, using an anti-CPB antiserum. Real-time PCR assays were performed to assess the relative cpb expression when compared to a housekeeping gene in promastigote cDNA preparations from the first, fourth and seventh passages. Interestingly, the data indicate a relative increase in cpb gene transcripts as the promastigotes were maintained under in vitro culture: 2.2 times higher for fourth and 2.7 times higher for seventh passages when compared to the first passage. Thus, the information gathered here shows that the expression of cysteine proteinases is modified during in vitro cultivation of L. (V.) braziliensis promastigotes.
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Affiliation(s)
- Karina Mastropasqua Rebello
- Laboratório de Biologia Molecular e Doenças Endêmicas, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, RJ, Brazil
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Pereira GMB, Esquenazi DDA, Robottom Ferreira AB, Moraes MO, Carvalho DS, Nery JADC, Alvim IMP, Spencer JS, Sampaio EP, Pessolani MCV, Sarno EN. Thalidomide and emergence of Mycobacterium leprae (ML)-specific responses in erythema nodosum leprosum (45.20). The Journal of Immunology 2009. [DOI: 10.4049/jimmunol.182.supp.45.20] [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] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
Acute inflammatory lesions are seen in lepromatous leprosy (LL) during reactions, such as ENL. Necrotic ENL as the initial manifestation of LL was diagnosed at the Souza Araujo Outpatient Unit of FIOCRUZ in Rio de Janeiro (female patient, 26 yrs old). Biopsies and peripheral blood mononuclear cells (PBL) were obtained on days 0, 7 and 30 of treatment with thalidomide (negative pregnancy test). At days 7 and 30 progressive healing of the lesions was observed. The quantification of specific mRNAS for IL-6, TNF-α, ninjurin and IL-10 by qPCR detected an initial high level of IL-6, TNF-α and ninjurin mRNAs, and after thalidomide treatment a decrease of the first 3 mRNAs in the lesion, but IL-10 message increase. ML-specific synthetic peptides induced progressively lower levels of IL-6 in the culture supernatants, but high-level IFN-γ, IL-13 and TNF-α in PBL responses after the healing of the lesions (ML 1419c protein; multiplex assay). CD4+, CD8+, CD45-RO+ and γδ T cells were present in the initial biopsy, but were nearly absent in the last one. Activated (CD69+) CD4, CD8 and γδ T cells were observed in short-term ML-stimulated cultures. Taken together these observations suggest that thalidomide may contribute to the emergence of a ML-specific T cell response with a potential role in the healing process of ENL.
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Affiliation(s)
- Geraldo M B Pereira
- 1Oswaldo Cruz Institute, Oswaldo Cruz Foundation-FIOCRUZ, Rio de Janeiro, Brazil
- 2School of Medical Sciences, State University of Rio de Janeiro - UERJ, Rio de Janeiro, Brazil
| | - Danuza de Almeida Esquenazi
- 1Oswaldo Cruz Institute, Oswaldo Cruz Foundation-FIOCRUZ, Rio de Janeiro, Brazil
- 2School of Medical Sciences, State University of Rio de Janeiro - UERJ, Rio de Janeiro, Brazil
| | | | | | | | | | | | - John Stewart Spencer
- 3Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, Colorado
| | | | | | - Euzenir Nunes Sarno
- 1Oswaldo Cruz Institute, Oswaldo Cruz Foundation-FIOCRUZ, Rio de Janeiro, Brazil
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