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1.
PLoS One ; 12(8): e0183314, 2017.
Article in English | MEDLINE | ID: mdl-28820906

ABSTRACT

METHODS: Female Wistar rats were exposed to filtered air (F) or to concentrated fine particulate matter (P) for 15 days. After mating, the rats were divided into four groups and again exposed to F or P (FF, FP, PF, PP) beginning on day 6 of pregnancy. At embryonic day 19, the placenta was collected. The placental structure, the protein and gene expression of TGFß1, VEGF-A, and its receptor Flk-1 and RAS were evaluated by indirect ELISA and quantitative real-time PCR. RESULTS: Exposure to P decreased the placental mass, size, and surface area as well as the TGFß1, VEGF-A and Flk-1 content. In the maternal portion of the placenta, angiotensin II (AngII) and its receptors AT1 (AT1R) and AT2 (AT2R) were decreased in the PF and PP groups. In the fetal portion of the placenta, AngII in the FP, PF and PP groups and AT2R in the PF and PP groups were decreased, but AT1R was increased in the FP group. VEGF-A gene expression was lower in the PP group than in the FF group. CONCLUSIONS: Exposure to pollutants before and/or during pregnancy alters some characteristics of the placenta, indicating a possible impairment of trophoblast invasion and placental angiogenesis with possible consequences for the maternal-fetal interaction, such as a limitation of fetal nutrition and growth.


Subject(s)
Environmental Exposure , Particulate Matter/metabolism , Placenta/anatomy & histology , Renin-Angiotensin System , Animals , Female , Gene Expression , Placenta/metabolism , Pregnancy , Rats , Rats, Wistar
2.
Clinics (Sao Paulo) ; 67(3): 255-9, 2012.
Article in English | MEDLINE | ID: mdl-22473407

ABSTRACT

OBJECTIVE: The preservation of biological samples at a low temperature is important for later biochemical and/or histological analyses. However, the molecular viability of thawed samples has not been studied sufficiently in depth. The present study was undertaken to evaluate the viability of intact tissues, tissue homogenates, and isolated total RNA after defrosting for more than twenty-four hours. METHODS: The molecular viability of the thawed samples (n = 82) was assessed using the A260/A280 ratio, the RNA concentration, the RNA integrity, the level of intact mRNA determined by reverse transcriptase polymerase chain reaction, the protein level determined by Western blotting, and an examination of the histological structure. RESULTS: The integrity of the total RNA was not preserved in the thawed intact tissue, but the RNA integrity and level of mRNA were perfectly preserved in isolated defrosted samples of total RNA. Additionally, the level of ß-actin protein was preserved in both thawed intact tissue and homogenates. CONCLUSION: Isolated total RNA does not undergo degradation due to thawing for at least 24 hours, and it is recommended to isolate the total RNA as soon as possible after tissue collection. Moreover, the protein level is preserved in defrosted tissues.


Subject(s)
Cryopreservation/methods , Gene Expression Profiling/methods , RNA Stability/genetics , RNA/genetics , Specimen Handling/methods , Actins/analysis , Animals , Male , Models, Animal , RNA/chemistry , RNA/isolation & purification , RNA Stability/physiology , Random Allocation , Rats , Time Factors
3.
Clinics ; Clinics;67(3): 255-259, 2012. ilus, graf
Article in English | LILACS | ID: lil-623100

ABSTRACT

OBJECTIVE: The preservation of biological samples at a low temperature is important for later biochemical and/or histological analyses. However, the molecular viability of thawed samples has not been studied sufficiently in depth. The present study was undertaken to evaluate the viability of intact tissues, tissue homogenates, and isolated total RNA after defrosting for more than twenty-four hours. METHODS: The molecular viability of the thawed samples (n = 82) was assessed using the A260/A280 ratio, the RNA concentration, the RNA integrity, the level of intact mRNA determined by reverse transcriptase polymerase chain reaction, the protein level determined by Western blotting, and an examination of the histological structure. RESULTS: The integrity of the total RNA was not preserved in the thawed intact tissue, but the RNA integrity and level of mRNA were perfectly preserved in isolated defrosted samples of total RNA. Additionally, the level of β-actin protein was preserved in both thawed intact tissue and homogenates. CONCLUSION: Isolated total RNA does not undergo degradation due to thawing for at least 24 hours, and it is recommended to isolate the total RNA as soon as possible after tissue collection. Moreover, the protein level is preserved in defrosted tissues.


Subject(s)
Animals , Male , Rats , Cryopreservation/methods , Gene Expression Profiling/methods , RNA , RNA Stability/genetics , Specimen Handling/methods , Actins/analysis , Models, Animal , Random Allocation , RNA , RNA Stability/physiology , Time Factors
4.
Ci. Anim. bras. ; 11(4): 880-887, 2010. tab, ilus
Article in Portuguese | VETINDEX | ID: vti-4171

ABSTRACT

Com o objetivo de avaliar as inter-relações entre a função hepática, o lipidograma e os distúrbios inflamatórios do endométrio (endometrites puerperais agudas, retenção dos anexos fetais e catarros genitais), colheram-se 126 amostras de soro sanguíneo de bovinos da raça Holandesa. A função hepática foi avaliada por meio da determinação dos teores séricos da proteína total, albumina, globulinas; aspartatoaminotransferase (AST), gamaglutamiltransferase (GGT) e bilirrubinas. O lipidograma foi avaliado pela determinação dos teores séricos de colesterol, triglicérides, ácidos graxos não esterificados e beta-hidroxibutirato. Os resultados obtidos permitem afirmar que os valores de albumina de animais com retenção dos anexos fetais e catarros genitais são menores do que os obtidos em animais sadios.(AU)


Aiming to assess the relationship among hepatic function, lipid profile and endometrium inflammatory disorders (acute postpartum endometritis, placental retention and genital catarrhal discharges), 126 blood samples were collected from Holstein cows. Hepatic function was assessed by total serum protein, albumin, globulins, aspartate aminotransferase (AST), gammaglutamyl transpeptidase (GGT) and bilirubin measurement. Lipid profile assessment was measured by serum levels of cholesterol, triglycerides, non-esterified fatty acids and â-hydroxybutyrate. The results indicate that the albumin values of cows presenting placental retention and chronic puerperal endometritis are lower than those of health cows.(AU)


Subject(s)
Animals , Cattle/classification , Inflammation/etiology , Endometritis/pathology
5.
Ciênc. anim. bras. (Impr.) ; 11(4): 880-887, 2010. tab, ilus
Article in Portuguese | VETINDEX | ID: biblio-1473023

ABSTRACT

Com o objetivo de avaliar as inter-relações entre a função hepática, o lipidograma e os distúrbios inflamatórios do endométrio (endometrites puerperais agudas, retenção dos anexos fetais e catarros genitais), colheram-se 126 amostras de soro sanguíneo de bovinos da raça Holandesa. A função hepática foi avaliada por meio da determinação dos teores séricos da proteína total, albumina, globulinas; aspartatoaminotransferase (AST), gamaglutamiltransferase (GGT) e bilirrubinas. O lipidograma foi avaliado pela determinação dos teores séricos de colesterol, triglicérides, ácidos graxos não esterificados e beta-hidroxibutirato. Os resultados obtidos permitem afirmar que os valores de albumina de animais com retenção dos anexos fetais e catarros genitais são menores do que os obtidos em animais sadios.


Aiming to assess the relationship among hepatic function, lipid profile and endometrium inflammatory disorders (acute postpartum endometritis, placental retention and genital catarrhal discharges), 126 blood samples were collected from Holstein cows. Hepatic function was assessed by total serum protein, albumin, globulins, aspartate aminotransferase (AST), gammaglutamyl transpeptidase (GGT) and bilirubin measurement. Lipid profile assessment was measured by serum levels of cholesterol, triglycerides, non-esterified fatty acids and â-hydroxybutyrate. The results indicate that the albumin values of cows presenting placental retention and chronic puerperal endometritis are lower than those of health cows.


Subject(s)
Animals , Cattle/classification , Inflammation/etiology , Endometritis/pathology
6.
Braz. j. vet. res. anim. sci ; 46(5): 355-362, 2009. tab, graf
Article in Portuguese | LILACS | ID: lil-538427

ABSTRACT

Com a finalidade de estabelecer os valores de referência dos teores de proteína, gordura e sólidos totais do leite de bovinos da raça Jersey,criados no Estado de São Paulo, durante o primeiro mês de lactação,bem como avaliar a influência da fase colostral, examinaram-se 418 amostras de leite, provenientes de quartos mamários sadios e sem crescimento bacteriano. O leite foi colhido assepticamente antes da ordenha e os valores de proteína, gordura e sólidos totais foram determinados por radiação infra vermelho. Os teores de proteína na secreção láctea diminuíram abruptamente do 1º para o 2º dia de lactação,enquanto os teores de sólidos totais diminuíram abruptamente nas primeiras 24 horas após o parto. Após oscilaram muito nos primeiros três dias de lactação, observou-se que os valores de gordura diminuíam atingindo os valores mínimos entre o 15º e 30º dia de lactação. Sugere-se nas primeiras 24 horas de lactação (período colostral) a adoção dos seguintes valores de referência: proteína - entre 7,35 e 11,45 g/dL;gordura – 0,98 e 2,00 g/dL; e sólidos totais - entre 12,39 e 19,45 g/dL


With the aim to establish reference values of the protein, fat and total solids of milk from Jersey cows, raised in the State of São Paulo, during the first month of lactation, as well as to evaluate the influence of the colostral phase, 418 milk samples, obtained from healthy mammary glands without bacterial growth, were analized. Milk samples were aseptically collected before milking and protein, fat and total solids determined by infrared radiation. The milk protein level decrease from first to second day of lactation, while milk total solids level decreased during the first 24 hours after parturition. Milk fat level oscillated in the first 3 days of lactation and then decreased to the minimum values between 15-30 days of lactation. We suggest, forthe first 24 hours of lactation (colostral phase) the use of the following reference values: protein- between 7,35 and 11,45 g/dl; fat- between 0,98 and 2,00 g/dl ; total solids – between 12,39 and 19,45 g/dl


Subject(s)
Animals , Female , Cattle , Lactation/physiology , Milk/chemistry , Milk Proteins/analysis , Total Solids/analysis , Brazil , Lactation/metabolism , Milk/metabolism
7.
Braz. j. vet. res. anim. sci ; 46(1): 5-10, 2009. tab
Article in Portuguese | LILACS | ID: lil-536949

ABSTRACT

Com o objetivo de avaliar a influência do puerpério fisiológico e da fase pós-puerperal no lipidograma de vacas sadias foram colhidas 104 amostras de sangue por punção da veia coccígea de fêmeas da raça Holandesa criadas no Estado de São Paulo. O lipidograma foi avaliado pela determinação dos teores séricos de colesterol, triglicérides, ácidos graxos não esterificados, beta-hidroxibutirato, e teores plasmáticos de glicose. Observou-se que os teores séricos de colesterol aumentaram gradativamente, enquanto os teores de ácidos graxos não esterificados diminuíram gradativamente com a evolução do puerpério. Na fase pós-puerperal (mais de 45 dias pós-parto) ocorreu a estabilização dos valores de colesterol e de ácidos graxos não esterificados.


Aiming to assess the influence of physiological puerperium and post puerperal phase on the lipid profile of health cows 104 blood sampleswere collected by coccygeal vein puncture of Holstein cows raised inthe State of São Paulo. Lipid profile assessment was measured byserum levels of cholesterol, triglycerides, nonesterified fatty acids, âhydroxybutyrate and plasma glucose level. With regard to puerperiumand post-puerperal phase influence on the lipid profile, gradual increaseof serum cholesterol level and decrease of nonesterified fatty acidswere observed with puerperal evolution. The values of cholesterol and nonsterified fatty acids were stabilized during post-puerperal phase(greater than 45 day postparturm).


Subject(s)
Animals , Fatty Acids/analysis , Blood Chemical Analysis/methods , Cattle , Cholesterol/analysis
8.
Braz. j. vet. res. anim. sci ; 46(1): 5-10, 2009. tab
Article in Portuguese | VETINDEX | ID: vti-5161

ABSTRACT

Com o objetivo de avaliar a influência do puerpério fisiológico e da fase pós-puerperal no lipidograma de vacas sadias foram colhidas 104 amostras de sangue por punção da veia coccígea de fêmeas da raça Holandesa criadas no Estado de São Paulo. O lipidograma foi avaliado pela determinação dos teores séricos de colesterol, triglicérides, ácidos graxos não esterificados, beta-hidroxibutirato, e teores plasmáticos de glicose. Observou-se que os teores séricos de colesterol aumentaram gradativamente, enquanto os teores de ácidos graxos não esterificados diminuíram gradativamente com a evolução do puerpério. Na fase pós-puerperal (mais de 45 dias pós-parto) ocorreu a estabilização dos valores de colesterol e de ácidos graxos não esterificados.(AU)


Aiming to assess the influence of physiological puerperium and post puerperal phase on the lipid profile of health cows 104 blood sampleswere collected by coccygeal vein puncture of Holstein cows raised inthe State of São Paulo. Lipid profile assessment was measured byserum levels of cholesterol, triglycerides, nonesterified fatty acids, âhydroxybutyrate and plasma glucose level. With regard to puerperiumand post-puerperal phase influence on the lipid profile, gradual increaseof serum cholesterol level and decrease of nonesterified fatty acidswere observed with puerperal evolution. The values of cholesterol and nonsterified fatty acids were stabilized during post-puerperal phase(greater than 45 day postparturm).(AU)


Subject(s)
Animals , Cholesterol/analysis , Fatty Acids/analysis , Blood Chemical Analysis/methods , Cattle
9.
Braz. j. vet. res. anim. sci ; 46(5): 355-362, 2009. tab, graf
Article in Portuguese | VETINDEX | ID: vti-5039

ABSTRACT

Com a finalidade de estabelecer os valores de referência dos teores de proteína, gordura e sólidos totais do leite de bovinos da raça Jersey,criados no Estado de São Paulo, durante o primeiro mês de lactação,bem como avaliar a influência da fase colostral, examinaram-se 418 amostras de leite, provenientes de quartos mamários sadios e sem crescimento bacteriano. O leite foi colhido assepticamente antes da ordenha e os valores de proteína, gordura e sólidos totais foram determinados por radiação infra vermelho. Os teores de proteína na secreção láctea diminuíram abruptamente do 1º para o 2º dia de lactação,enquanto os teores de sólidos totais diminuíram abruptamente nas primeiras 24 horas após o parto. Após oscilaram muito nos primeiros três dias de lactação, observou-se que os valores de gordura diminuíam atingindo os valores mínimos entre o 15º e 30º dia de lactação. Sugere-se nas primeiras 24 horas de lactação (período colostral) a adoção dos seguintes valores de referência: proteína - entre 7,35 e 11,45 g/dL;gordura 0,98 e 2,00 g/dL; e sólidos totais - entre 12,39 e 19,45 g/dL(AU)


With the aim to establish reference values of the protein, fat and total solids of milk from Jersey cows, raised in the State of São Paulo, during the first month of lactation, as well as to evaluate the influence of the colostral phase, 418 milk samples, obtained from healthy mammary glands without bacterial growth, were analized. Milk samples were aseptically collected before milking and protein, fat and total solids determined by infrared radiation. The milk protein level decrease from first to second day of lactation, while milk total solids level decreased during the first 24 hours after parturition. Milk fat level oscillated in the first 3 days of lactation and then decreased to the minimum values between 15-30 days of lactation. We suggest, forthe first 24 hours of lactation (colostral phase) the use of the following reference values: protein- between 7,35 and 11,45 g/dl; fat- between 0,98 and 2,00 g/dl ; total solids between 12,39 and 19,45 g/dl(AU)


Subject(s)
Animals , Female , Milk/metabolism , Milk Proteins/analysis , Total Solids/analysis , Lactation/metabolism , Cattle
10.
Braz. j. vet. res. anim. sci ; 41(5): 306-312, set.-out. 2004. tab
Article in Portuguese | LILACS | ID: lil-404975

ABSTRACT

Para avaliar a influência de fatores raciais sobre a função hepática de bovinos foram colhidas 134 amostras de sangue, sendo 67 animais da raça Jersey e 67 da raça Holandesa, criados em São Paulo. No soro sangüíneo realizaram-se as seguintes determinações: proteinograma; atividade enzimática da aspartato aminotransferase (AST), gama glutamiltransferase (GGT), bilirrubinas indireta, direta e total. A avaliação do proteinograma demonstrou a influência dos fatores raciais, pois os valores médios da proteína total dos bovinos da raça Jersey (6,37±0,90 g/dl) foram menores do que os animais da raça Holandesa (6,82±0,97 g/dl).Essas variações foram decorrentes as frações protéicas que correspondem as globulinas, sendo os teores médios obtidos para bovinos da raça Jersey (3,13 ± 0,81g/dl) menores do que os encontrados para bovinos da raça Holandesa (3,73 ± 0,99 g/dl). Os valores das alfa-, beta- e gama-globulinas obtidos nos animais da raça Jersey (iguais a 0,89±0,14 g/dl; 0,71±0,14 g/dl; 2,03±0,38 g/dl) foram menores do que os encontrados para bovinos da raça Holandesa (iguais a 1,00±0,16 g/dl; 0,76±0,15 g/dl; 2,20±0,45 g/dl). A avaliação da atividade enzimática revelou a influência dos fatores raciais nos resultados da AST, sendo os valores dos bovinos Jersey (49,27±17,87 U/l) maiores do que os da raça Holandesa (34,76±10,61 U/l), enquanto para a GGT não foram observadas diferenças significativas entre os resultados da raça Jersey (19,46±33,11 U/l) e da raça Holandesa (19,08±33,26 U/l). A avaliação dos teores séricos de bilirrubinas evidenciou variações sob influência racial para os teores de bilirrubinas indireta e total, sendo os valores obtidos para a raça Jersey (0,40±0,33 mg/dl de bilirrubina indireta e 0,44±0,33 mg/dl de bilirrubina total) maiores do que os observados para a raça Holandesa (0,22±0,19 mg/dl de bilirrubina indireta e 0,25±0,19 mg/dl de bilirrubina total).


Subject(s)
Animals , Cattle , Aspartate Aminotransferases , Bilirubin , gamma-Glutamyltransferase , Liver Function Tests
11.
Braz. j. vet. res. anim. sci ; 41(5): 306-312, set.-out. 2004. tab
Article in Portuguese | VETINDEX | ID: vti-5209

ABSTRACT

Para avaliar a influência de fatores raciais sobre a função hepática de bovinos foram colhidas 134 amostras de sangue, sendo 67 animais da raça Jersey e 67 da raça Holandesa, criados em São Paulo. No soro sangüíneo realizaram-se as seguintes determinações: proteinograma; atividade enzimática da aspartato aminotransferase (AST), gama glutamiltransferase (GGT), bilirrubinas indireta, direta e total. A avaliação do proteinograma demonstrou a influência dos fatores raciais, pois os valores médios da proteína total dos bovinos da raça Jersey (6,37±0,90 g/dl) foram menores do que os animais da raça Holandesa (6,82±0,97 g/dl).Essas variações foram decorrentes as frações protéicas que correspondem as globulinas, sendo os teores médios obtidos para bovinos da raça Jersey (3,13 ± 0,81g/dl) menores do que os encontrados para bovinos da raça Holandesa (3,73 ± 0,99 g/dl). Os valores das alfa-, beta- e gama-globulinas obtidos nos animais da raça Jersey (iguais a 0,89±0,14 g/dl; 0,71±0,14 g/dl; 2,03±0,38 g/dl) foram menores do que os encontrados para bovinos da raça Holandesa (iguais a 1,00±0,16 g/dl; 0,76±0,15 g/dl; 2,20±0,45 g/dl). A avaliação da atividade enzimática revelou a influência dos fatores raciais nos resultados da AST, sendo os valores dos bovinos Jersey (49,27±17,87 U/l) maiores do que os da raça Holandesa (34,76±10,61 U/l), enquanto para a GGT não foram observadas diferenças significativas entre os resultados da raça Jersey (19,46±33,11 U/l) e da raça Holandesa (19,08±33,26 U/l). A avaliação dos teores séricos de bilirrubinas evidenciou variações sob influência racial para os teores de bilirrubinas indireta e total, sendo os valores obtidos para a raça Jersey (0,40±0,33 mg/dl de bilirrubina indireta e 0,44±0,33 mg/dl de bilirrubina total) maiores do que os observados para a raça Holandesa (0,22±0,19 mg/dl de bilirrubina indireta e 0,25±0,19 mg/dl de bilirrubina total). (AU)


With the purpose to evaluate the breed factor inf1uence on the hepatic function of cattle, 134 blood samples from, 67 Jersey and 67 Holstein cattle in São Paulo, Brazil, were collected . The hepatic function was studied through the determination of proteinogram; activities of the aspartate aminotransferase (AST), gamma glutamyltransferase (GG1) and dosage of total, direct and inditect bilirrubin in sorology .The evaluation of the proteinogram demonstrated the inf1uence of the breed factor: the values of total protein in Jersey (6.37±0.90 g/dl) was lower than in Holstein (6.82±0.97g/dl). The analysis of proteins showed the differences between the Jersey and the Holstein animals resulting of the globulins concentrations presents in serum, the values of globulins in Jersey (3.13±0..81g/dl) were lower than in Holstein (3.73±0.99g/dl). Values of alpha-, beta- and gamma-globulins were obtained through the eletrophoresis. In Jersey the values were lower (0.89±0,14g/dl; 0.71±0.14g/dl, 2.03±0.38g/dl) than in Holstein (1.00±0.16g/dl; 0.76±0.15g/dl; 2.20±0.45g/dl). The evaluation of breed factor inf1uence on the AST and GGT seric enzimatic activity showed this inf1uence in AST, but not in GGT. Values of AST in Jersey (49.27±17.87U/l) were higher than in Holstein (34.76±10.61U/l). Values of GGT did not show differences between the Jersey (19.46±33.11U/l) and Holstein (19.08±33.26U/l). The evaluation of seric bilirrubins concentrations showed differences on the total and indirect bilirrubin. Hygher values of indirect bilirrubin (0.40±0.33mg/dl; total bilirrubin 0.44±0.33mg/dl) were seen in Jersey than in Holstein. (AU)


Subject(s)
Animals , Cattle , Liver Function Tests , Aspartate Aminotransferases , gamma-Glutamyltransferase , Bilirubin
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