Consulta: subjectFacets:"Immunoglobulin G"
Registros recuperados: 8
Data/hora: 10/06/2024 18:18:41

Toxoplasma gondii: DNA vaccination with genes encoding antigens MIC2, M2AP, AMA1 and BAG1 and evaluation of their immunogenic potential
Provedor de dados: Obihiro University of Agriculture and Veterinary Medicine Academic Repository (OAK)
Autores: Dautu, George; Munyaka, Biscah; Carmen, Gabriella; Zhang, Guohong; Omata, Yoshitaka; Xuan, Xuenan; Igarashi, Makoto.
A combination of antigenic regions of microneme proteins have been previously reported as being protective against chronic toxoplasmosis. In this work, we evaluated immune responses induced by immunizing BALB/c and C57BL/6 mice intradermally with plasmid DNA encoding the protein sequences of Toxoplasma gondii AMA1, MIC2, M2AP and BAG1. Mice immunized with the AMA1 gene developed high levels of serum IgG2a and c antibodies as well as cellular immune responses associated with IFN-γ synthesis suggesting a modulated Th1 type of response. Immunization with the AMA1 gene resulted in a partial but significant protection against the acute phase of toxoplasmosis compared to MIC2, M2AP and BAG1 genes. Therefore, the AMA1 gene appears to generate a strong specific...
Palavras-chave: Toxoplasma gondii; DNA; Deoxyribonucleic acid; DNA immunization; MIC2; Microneme protein-2; M2AP; MIC2 associated protein; AMA1; Apical membrane antigen-1; BAG1; Bradyzoite antigen-1; IgG; Immunoglobulin G.
Ano: 2007
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1031

Nutritional and microbiological quality of bovine colostrum samples in Brazil
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Santos,Glauber dos; Silva,Jackeline Thaís da; Santos,Flávia Hermelina da Rocha; Bittar,Carla Maris Machado.
ABSTRACT The objective of this study was to evaluate the nutritional and microbiological composition of colostrum samples collected from colostrum banks or newly calved cows on dairy farms. For this purpose, 66 colostrum samples from dairy cows were directly collected during the milking of newly calved cows or from colostrum storage bank. Samples were collected from commercial properties in the states of Minas Gerais, São Paulo, and Paraná - Brazil, which were classified according to the total daily milk yield (MY). Even though average immunoglobulin concentrations were either adequate (79.7 and 51.7 mg/mL, for farms with MY&gt;701 L/d and &lt;200 L/d, respectively) or marginal (48.1 mg/mL for MY between 201-700 L/d), for only 48.4% of the colostrum...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dairy calf; Enterobacteria; Immunoglobulin G; Passive immunity transfer.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000100072

Auto-lysed yeast and yeast extract effects on dry matter intake, blood cells counts, IgG titer and gene expression of IL-2 in lactating dairy cows under heat stress
Provedor de dados: Acta Scientiarum: Animal Sciences
Autores: Adili, Sogol; Sadeghi, Ali Asghar; Chamani, Mohamad; Shawrang, Parvin; Forodi, Farhad.
The objective of this study was to assess the effects of auto-lysed yeast and yeast extract on performance and immune responses of cows in hot climate in the early lactation period. Twenty five lactating dairy cows randomly assigned to 5 groups and 5 replicates. Cows received basal diet with or without auto-lysed yeast (20 or 40 g/d/head) or yeast extract (20 or 40 g/d/head) as on top-dressed. There were no differences for daily dry matter intake, milk production milk fat and the counts of red blood cells and white blood cells among treatments (p &amp;gt; 0.05). There were significant differences among treatments for immunoglobulin G (IgG) level, lymphocyte and neutrophil percentages. Yeast extract had no effect on IgG level, but auto-lysed yeast increased...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Immunoglobulin G; Immune response; Interleukin-2; Lymphocyte; Neutrophil immunoglobulin G; Immune response; Interleukin-2; Lymphocyte; Neutrophil.
Ano: 2020
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/48425

Effect of feeding heat-treated and unheated colostrum on immunoglobulin G absorption, health and performance of neonatal Holstein dairy calves
Provedor de dados: Acta Scientiarum: Animal Sciences
Autores: Rafiei, Mohammad; Ghoorchi, Taghi; Toghdory, Abdolhakim; Moazeni, Mostafa; Khalili, Mohsen.
First colostrum is an important source of nutrients and immune factors which are necessary for calves in the first weeks of life. Despite these benefits, colostrum can also represent one of the earliest potential exposures of dairy calves to infectious agents which these patogens can act directly on growth and cause diseases such as scours or septicemia. With recent increased interest in pasteurized milk feeding systems, producers have been curious to learn if there may also be benefits from feeding pasteurized colostrum. This study was realized to determine the effects of feeding heat-treated colostrum or unheated colostrum on passive transfer of immunity, immunoglobulin G (IgG) concentration, total plate count, health and performance of neonatal dairy...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Immunoglobulin G; Colostrum; Health; Serum total protein; Weaning.
Ano: 2019
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/45533

Placental transfer of Haemophilus influenzae type b antibodies in malnourished pregnant women
Provedor de dados: Brazilian Journal of Infectious Diseases
Autores: Cavalcante,Rejane S.; Kopelman,Benjamin I.; Costa-Carvalho,Beatriz T.
This study evaluated the vaccination response to Haemophilus influenzae type b (Hib) in malnourished pregnant women (MN), cord blood (CB) and in infants at two and six months of age for comparison with a control group (C). Twenty-eight malnourished pregnant women and 29 pregnant controls were immunized with conjugated Act-HIB® in the third trimester of pregnancy. Blood samples were collected from all before the immunization, during labor (post immunization), and from CB. All infants were immunized with Hib vaccine according to normal vaccine schedule and sera were collected at two and six months of age. Antibody levels to polyribosylribitol phosphate (PRP) were similar for both groups. Preimmunization: MN 1.94 µg/mL, C 1.68 µg/mL; post-vaccination: MN...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pregnant women; Malnourished; Haemophilus influenzae type b; Passive immunization; Vaccine; Antibodies; Immunoglobulin G.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702008000100011

T cell subsets and immunoglobulin G levels are associated with the infection status of systemic lupus erythematosus patients
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Wu,Lifen; Wang,Xinru; Chen,Fenghua; Lv,Xing; Sun,Wenwen; Guo,Ying; Hou,Hou; Ji,Haiyan; Wei,Wei; Gong,Lu.
Systemic lupus erythematosus (SLE) is a chronic, autoimmune disorder that affects nearly all organs and tissues. As knowledge about the mechanism of SLE has increased, some immunosuppressive agents have become routinely used in clinical care, and infections have become one of the direct causes of mortality in SLE patients. To identify the risk factors indicative of infection in SLE patients, a case control study of our hospital's medical records between 2011 and 2013 was performed. We reviewed the records of 117 SLE patients with infection and 61 SLE patients without infection. Changes in the levels of T cell subsets, immunoglobulin G (IgG), complement C3, complement C4, globulin, and anti-double-stranded DNA (anti-ds-DNA) were detected. CD4+ and CD4+/CD8+...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Systemic lupus erythematosus; Infection; T cell subsets; Immunoglobulin G.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2018000200610

Detection of immunoglobulin G in the lung and liver of hamsters with visceral leishmaniasis
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Mathias,R.; Costa,F.A.L.; Goto,H.
Several organs are affected in visceral leishmaniasis, not only those rich in mononuclear phagocytes. Hypergammaglobulinemia occurs during visceral leishmaniasis; anti-Leishmania antibodies are not primarily important for protection but might be involved in the pathogenesis of tissue lesions. The glomerulonephritis occurring in visceral leishmaniasis has been attributed to immune complex deposition but in other organs the mechanism has not been studied. In the current study we demonstrated the presence of IgG in the lung and liver of hamsters with visceral leishmaniasis. Hamsters were injected intraperitoneally with 2 x 10(7) amastigotes of Leishmania (Leishmania) chagasi and the presence of IgG in the liver and lung was evaluated at 7, 15, 30, 45, 80 and...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Leishmania (Leishmania) chagasi; Visceral leishmaniasis; Immunopathology; Immunoglobulin G; Liver; Lung.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000400015

Immunoglobulin G proteolytic activity of Actinobacillus actinomycetemcomitans
Provedor de dados: Brazilian Journal of Microbiology
Autores: Nakanishi,Fernanda Akemi; Avila-Campos,Mario Julio; Kamiji,Nádia Hizuru; Itano,Eiko Nakagawa.
Actinobacillus actinomycetemcomitans produces a protease to human immunoglobulin G that is an important evasion mechanism. In this study, the proteolytic activity of A. actinomycetemcomitans strain ATCC 43718 on human immunoglobulin G associated with culture supernatant concentrations, the growth period and the period of incubation with immunoglobulin G were evaluated by an enzyme linked immunosorbent assay. The protease fraction was detected by Sephadex G 150 chromatography. The results showed that A. actinomycetemcomitans produced a protease to human immunoglobulin G in the culture supernatant, and the highest activity was achieved witen the concentration was 27.5 mug protein/mL, after culturing for 72 hours and incubating with IgG for 24 hours. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Immunoglobulin G; Actinobacillus actinomycetemcomitans; ELISA; Protease.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000100008