Exploring the impact of high-energy diets on cattle: Insights into subacute rumen acidosis, insulin resistance, and hoof health.

Cattle lameness remains a significant concern, causing economic losses and compromising animal welfare. Claw horn lesions have been identified as a major cause of lameness in dairy cows, but their correlation with high-energy diets and ruminal acidosis remains unclear. Hence, the primary objective of this study was to assess the effects of a high-starch diet and a conventional diet on the rumen environment, acute-phase proteins, and metabolic alterations, with a particular focus on insulin resistance and the consequent implications for the histology of the hooves in Holstein steers. A total of 16 animals were divided into the high-starch (HS; 37% starch) and conventional (CON; 16.8% starch) groups. Glucose tolerance tests (GTT), blood analyses, rumen fluid analyses, and histological evaluations of the hoof tissue were conducted over a 102-d experimental period. The HS group showed a lower ruminal pH than the CON group, and with values indicating SARA. The plasma glucose and IGF-1 concentrations were higher in the HS group, suggesting an anabolic state. Both groups exhibited an increase in the insulin area under the curve (AUC) after the GTT on d 102. Histological analysis of the hooves showed a reduction in the length and width of the epidermal lamella in both groups. We found a significant negative correlation between the insulin AUC and the length and width of the epidermal lamella. Because both groups were similarly affected, the hypothesis that histological alterations were caused by the experimental diets still needs confirmation. Additionally, the development of SARA was not essential for the observed histological changes in the hoof. Further studies are warranted to thoroughly investigate the role of insulin and IGF-1 imbalances in claw health.

Effects of a Single Intra-Articular Injection of 2% Lidocaine or 0.5% Bupivacaine on Synovial Fluid Acute Phase Protein Concentrations in Healthy Horses.

The purpose of this study was to compare the extent of inflammation response in the middle carpal joints of healthy horses following intra-articular injection of 2% lidocaine, 0.5% bupivacaine, or 0.9% saline solution. The right middle carpal joint of 20 horses was injected with 5 mL of 0.5% bupivacaine (GB, n = 10) or 5 mL of 2% lidocaine (GL, n = 10). The left middle carpal joint of horses was used as a control (5 mL 0.9% saline). Serum and synovial fluid (SF) were aseptically collected before and at predetermined times after each injection. Serum and synovial fluid protein, albumin, transferrin, haptoglobin, ceruloplasmin, α1-antitripsin, and α1-acid glycoprotein concentrations were measured by sodium dodecyl sulfate polyacrylamide gel electrophoresis and compared among treatments. The results were submitted to analysis of variance using the SAS statistical program, and means were compared by the Student-Newman-Keuls test (P < .05). Both lidocaine and bupivacaine induced serum and SF changes indicative of inflammation, but the magnitude of those changes was more pronounced for lidocaine. Administration of 0.9% saline also induced an inflammatory reaction, but the magnitude of these changes was less pronounced than those caused by GB and GL. The results suggested that bupivacaine is safer than lidocaine for intra-articular injection in horses. Saline solution should not be used as an adjunct to intra-articular injections in horses.

Evaluating feline lower urinary tract disease: Doppler ultrasound of the kidneys.

OBJECTIVES: Ultrasonography is used in the evaluation of urinary disorders, and the resistivity index (RI) and pulsatility index (PI) have been successfully used to detect early hemodynamic changes in the course of kidney diseases in humans and dogs. The aim of this study was to investigate RI and PI in cats with feline lower urinary tract disease (FLUTD). METHODS: Twenty-nine client-owned cats were selected and divided into a control group (CG; n = 10), a group of animals with obstructive FLUTD (OG; n = 11) and non-obstructive FLUTD (nOG; n = 8). Clinical, laboratory and ultrasound evaluations were performed in all cats. RESULTS: RI and PI values for cats in the CG were below the upper limit of normal suggested in other studies, while cats with FLUTD showed significantly higher values in the assessment of RI (P = 0.027 and P = 0.034, respectively) and PI (P = 0.044 and P = 0.048, respectively) of the right and left kidneys. CONCLUSIONS AND RELEVANCE: Alteration in renal blood flow was observed in cats with lower urinary tract disorders, even in the nOG group. To the best of our knowledge, this is the first report of renal blood flow changes related to non-obstructive FLUTD.

Effects of flunixin meglumine, meloxicam, and firocoxib on the acute-phase proteins in horses following standing castration / Efeitos do flunixin meglumine, meloxicam e firocoxib na concentração de proteínas da fase aguda após em equinos após castração

Excessive infection and inflammation are the most common complications associated with castration. The objective of this study was to compare the efficacy of flunixin meglumine (FM), meloxicam (MX), or firocoxib (FX) for inflammation control after castration in horses using acute-phase proteins (APP) as markers of inflammation. Thirty healthy, unbroken, mixed-breed horses (body weight 358.62±45.57kg and age 4.99±2.63 years) were randomly (n=10 animals/group) allocated to receive one of three different post-castration anti-inflammatory medicines: Group 1 (FM 1.1mg/kg bwt, IV, s.i.d for 5 days); Group 2 (MX 0.6mg/kg bwt, IV, s.i.d for 5 days); and Group 3 (FX 0.1mg/kg bwt, IV, s.i.d for 5 days). All horses were castrated in standing position, using the open technique. Serum and peritoneal APP concentrations were measured by sodium dodecyl sulfate (SDS) polyacrylamide gel electrophoresis (PAGE) and determined before castration (0), and 3, 5, 24, 48, 72, 120 and 168 hours after castration. The results were submitted to analysis of variance using the SAS statistical program, and means were compared by the Student-Newman-Keuls test (p<0.05). Three animals from the MX group developed hyperthermia (with rectal temperatures of 39.8, 39.3 and 38.9°C on day 4, 5 and 6, respectively) and showed local clinical signs of inflammation (inguinal and excessive scrotal edema) and reluctance to walk, as well as a rigid gait of the hind limbs. The same complications were observed in one FX horse. No complications were observed among the FM animals. The castration resulted in significant changes in serum and peritoneal values of total proteins, ceruloplasmin (Cp), transferrin (Tf), albumin (Alb), haptoglobin (Hp) and α1-acid glycoprotein (Gp) in animals of all experimental groups. However, the animals of the MX and FX groups presented more intense acute phase response compared to the animals of the FM group. Changes in the APP were associated with the surgical trauma of castration, but the differences between groups were associated with the ability of the nonsteroidal anti-inflammatory drug to control the inflammation. In conclusion, and based on the findings of acute phase proteins, flunixin is more efficient to control the magnitude of inflammation following castration as compared to meloxicam and firocoxib.(AU)

Infecção e inflamação excessivas são as complicações mais comuns associadas à castração. O objetivo deste estudo foi comparar a eficácia do flunixin meglumine (FM), meloxicam (MX) ou firocoxib (FX) no controle da inflamação após a castração em cavalos usando proteínas da fase aguda (APP) como marcadores de inflamação. Trinta equinos saudáveis (358,62±45,57kg; 4,99±2,63 anos) foram em função dos anti-inflamatórios utilizados após as castrações aleatoriamente (n= 10 animais/grupo) alocados em três diferentes grupos: Grupo 1 (FM 1,1mg/kg de peso, IV, sid por 5 dias); Grupo 2 (MX 0,6mg/kg de peso, IV, s.i.d por 5 dias); e Grupo 3 (FX 0,1mg/kg de peso, IV, s.i.d por 5 dias). Todos os cavalos foram castrados em posição quadrupedal, utilizando a técnica aberta. As concentrações de APP sérica e peritoneal foram separadas por eletroforese em gel de poliacrilamida (PAGE) com dodecil-sulfato de sódio (SDS) e determinadas no momento 0 (antes da castração) e com 3, 5, 24, 48, 72, 120 e 168 horas após a castração. Os resultados foram submetidos à análise de variância pelo programa estatístico SAS e as médias foram comparadas pelo teste de Student-Newman-Keuls (p<0,05). Três animais do grupo MX desenvolveram hipertermia (com temperatura retal de 39,8, 39,3 e 38,9° C nos dias 4, 5 e 6, respectivamente) e mostraram sinais clínicos locais de inflamação (edema inguinal e escrotal excessivo) e relutância em andar, bem como marcha rígida dos membros posteriores. As mesmas complicações foram observadas em um cavalo do FX. Não foram observadas complicações entre os animais do FM. Independente do grupo, a castração resultou em alterações significativas nos valores séricos e peritoneais de proteínas totais, ceruloplasmina (Cp), transferrina (Tf), albumina (Alb), haptoglobina (Hp) e glicoproteína ácida α1 (Gp). No entanto, os animais dos grupos MX e FX apresentaram resposta de fase aguda mais intensa quando comparados aos animais do FM. Alterações na resposta de fase aguda deveram-se ao trauma cirúrgico da castração, mas as diferenças entre os grupos foram associadas à capacidade do anti-inflamatório em controlar a inflamação. Em conclusão, baseado da resposta de fase aguda, o flunixin em comparação com o meloxicam e o firocoxib é mais eficiente no controle da inflamação após a castração em equinos.(AU)

Characterization of proteinuria in treated and untreated dogs naturally infected with Leishmania sp / Caracterização da proteinúria de cães tratados e não tratados, naturalmente infectados com Leishmania sp

In the search for an early biomarker of renal injury, this study aimed to determine the urinary protein profile of dogs with leishmaniasis without treatment and treated as determined by Brazilian legislation. The identification of proteinuria, its classification and the circumstances in which it takes place instigated this study. For this, 30 dogs from an outpatient clinic at a Veterinary Hospital in Belo Horizonte were evaluated. All animals underwent clinical and laboratory tests, which included renal biomarkers. The proteins were characterized using the SDS-page electrophoresis technique, and thus, a urinary protein profile was developed comparing patients considered clinically healthy with dogs infected with leishmaniasis that were under treatment and with untreated infected dogs. The results showed that the hematological and biochemical parameters showed similar behavior between the groups of healthy dogs and dogs with leishmaniasis treated, however a very heterogeneous pattern of urinary proteins can be observed and differed between healthy animals and animals with leishmaniasis, as well as between treated and untreated animals. The results suggest that the classification of proteinuria can be a tool that helps in the staging of animals infected with L. infantum and can differentiate them as to the severity of existing kidney injuries.(AU)

Na busca por um biomarcador precoce de injúria renal, este trabalho teve como objetivo determinar o perfil proteico urinário de cães infectados com leishmaniose sem tratamento e tratados conforme determina a legislação brasileira. A identificação da proteinúria, sua classificação e as circunstâncias em que ocorrem instigaram este estudo. Para tanto, foram avaliados 30 cães oriundos do atendimento clínico ambulatorial de um Hospital Veterinário em Belo Horizonte. Todos os animais passaram por exame clínico e laboratorial, que incluíram biomarcadores renais. As proteínas foram caracterizadas através da técnica de eletroforese por SDS-PAGE, e assim, foi elaborado um perfil proteico urinário comparando pacientes considerados clinicamente hígidos, com cães infectados por Leishmania (L.) infantum e que estavam sob tratamento e cães infectados não tratados. Os resultados demonstraram que os parâmetros hematológicos e bioquímicos apresentaram comportamento semelhante entre os grupos de cães hígidos e de cães infectados com L. infantum tratados, entretanto um padrão muito heterogêneo de proteínas urinárias pode ser observado e diferiu entre animais hígidos e animais com leishmaniose, assim como entre os animais tratados e não tratados. Os resultados sugerem que a classificação da proteinúria pode ser uma ferramenta que auxilia no estadiamento de animais infectados por L. infantum podendo diferenciá-los quanto à gravidade de lesões renais existentes.(AU)

Effects of flunixin meglumine, meloxicam, and firocoxib on the acute-phase proteins in horses following standing castration

ABSTRACT: Excessive infection and inflammation are the most common complications associated with castration. The objective of this study was to compare the efficacy of flunixin meglumine (FM), meloxicam (MX), or firocoxib (FX) for inflammation control after castration in horses using acute-phase proteins (APP) as markers of inflammation. Thirty healthy, unbroken, mixed-breed horses (body weight 358.62±45.57kg and age 4.99±2.63 years) were randomly (n=10 animals/group) allocated to receive one of three different post-castration anti-inflammatory medicines: Group 1 (FM 1.1mg/kg bwt, IV, s.i.d for 5 days); Group 2 (MX 0.6mg/kg bwt, IV, s.i.d for 5 days); and Group 3 (FX 0.1mg/kg bwt, IV, s.i.d for 5 days). All horses were castrated in standing position, using the open technique. Serum and peritoneal APP concentrations were measured by sodium dodecyl sulfate (SDS) polyacrylamide gel electrophoresis (PAGE) and determined before castration (0), and 3, 5, 24, 48, 72, 120 and 168 hours after castration. The results were submitted to analysis of variance using the SAS statistical program, and means were compared by the Student-Newman-Keuls test (p 0.05). Three animals from the MX group developed hyperthermia (with rectal temperatures of 39.8, 39.3 and 38.9°C on day 4, 5 and 6, respectively) and showed local clinical signs of inflammation (inguinal and excessive scrotal edema) and reluctance to walk, as well as a rigid gait of the hind limbs. The same complications were observed in one FX horse. No complications were observed among the FM animals. The castration resulted in significant changes in serum and peritoneal values of total proteins, ceruloplasmin (Cp), transferrin (Tf), albumin (Alb), haptoglobin (Hp) and 1-acid glycoprotein (Gp) in animals of all experimental groups. However, the animals of the MX and FX groups presented more intense acute phase response compared to the animals of the FM group. Changes in the APP were associated with the surgical trauma of castration, but the differences between groups were associated with the ability of the nonsteroidal anti-inflammatory drug to control the inflammation. In conclusion, and based on the findings of acute phase proteins, flunixin is more efficient to control the magnitude of inflammation following castration as compared to meloxicam and firocoxib.

RESUMO: Infecção e inflamação excessivas são as complicações mais comuns associadas à castração. O objetivo deste estudo foi comparar a eficácia do flunixin meglumine (FM), meloxicam (MX) ou firocoxib (FX) no controle da inflamação após a castração em cavalos usando proteínas da fase aguda (APP) como marcadores de inflamação. Trinta equinos saudáveis (358,62±45,57kg; 4,99±2,63 anos) foram em função dos anti-inflamatórios utilizados após as castrações aleatoriamente (n= 10 animais/grupo) alocados em três diferentes grupos: Grupo 1 (FM 1,1mg/kg de peso, IV, sid por 5 dias); Grupo 2 (MX 0,6mg/kg de peso, IV, s.i.d por 5 dias); e Grupo 3 (FX 0,1mg/kg de peso, IV, s.i.d por 5 dias). Todos os cavalos foram castrados em posição quadrupedal, utilizando a técnica aberta. As concentrações de APP sérica e peritoneal foram separadas por eletroforese em gel de poliacrilamida (PAGE) com dodecil-sulfato de sódio (SDS) e determinadas no momento 0 (antes da castração) e com 3, 5, 24, 48, 72, 120 e 168 horas após a castração. Os resultados foram submetidos à análise de variância pelo programa estatístico SAS e as médias foram comparadas pelo teste de Student-Newman-Keuls (p 0,05). Três animais do grupo MX desenvolveram hipertermia (com temperatura retal de 39,8, 39,3 e 38,9° C nos dias 4, 5 e 6, respectivamente) e mostraram sinais clínicos locais de inflamação (edema inguinal e escrotal excessivo) e relutância em andar, bem como marcha rígida dos membros posteriores. As mesmas complicações foram observadas em um cavalo do FX. Não foram observadas complicações entre os animais do FM. Independente do grupo, a castração resultou em alterações significativas nos valores séricos e peritoneais de proteínas totais, ceruloplasmina (Cp), transferrina (Tf), albumina (Alb), haptoglobina (Hp) e glicoproteína ácida 1 (Gp). No entanto, os animais dos grupos MX e FX apresentaram resposta de fase aguda mais intensa quando comparados aos animais do FM. Alterações na resposta de fase aguda deveram-se ao trauma cirúrgico da castração, mas as diferenças entre os grupos foram associadas à capacidade do anti-inflamatório em controlar a inflamação. Em conclusão, baseado da resposta de fase aguda, o flunixin em comparação com o meloxicam e o firocoxib é mais eficiente no controle da inflamação após a castração em equinos.

Characterization of proteinuria in treated and untreated dogs naturally infected with Leishmania sp

ABSTRACT: In the search for an early biomarker of renal injury, this study aimed to determine the urinary protein profile of dogs with leishmaniasis without treatment and treated as determined by Brazilian legislation. The identification of proteinuria, its classification and the circumstances in which it takes place instigated this study. For this, 30 dogs from an outpatient clinic at a Veterinary Hospital in Belo Horizonte were evaluated. All animals underwent clinical and laboratory tests, which included renal biomarkers. The proteins were characterized using the SDS-page electrophoresis technique, and thus, a urinary protein profile was developed comparing patients considered clinically healthy with dogs infected with leishmaniasis that were under treatment and with untreated infected dogs. The results showed that the hematological and biochemical parameters showed similar behavior between the groups of healthy dogs and dogs with leishmaniasis treated, however a very heterogeneous pattern of urinary proteins can be observed and differed between healthy animals and animals with leishmaniasis, as well as between treated and untreated animals. The results suggest that the classification of proteinuria can be a tool that helps in the staging of animals infected with L. infantum and can differentiate them as to the severity of existing kidney injuries.

RESUMO: Na busca por um biomarcador precoce de injúria renal, este trabalho teve como objetivo determinar o perfil proteico urinário de cães infectados com leishmaniose sem tratamento e tratados conforme determina a legislação brasileira. A identificação da proteinúria, sua classificação e as circunstâncias em que ocorrem instigaram este estudo. Para tanto, foram avaliados 30 cães oriundos do atendimento clínico ambulatorial de um Hospital Veterinário em Belo Horizonte. Todos os animais passaram por exame clínico e laboratorial, que incluíram biomarcadores renais. As proteínas foram caracterizadas através da técnica de eletroforese por SDS-PAGE, e assim, foi elaborado um perfil proteico urinário comparando pacientes considerados clinicamente hígidos, com cães infectados por Leishmania (L.) infantum e que estavam sob tratamento e cães infectados não tratados. Os resultados demonstraram que os parâmetros hematológicos e bioquímicos apresentaram comportamento semelhante entre os grupos de cães hígidos e de cães infectados com L. infantum tratados, entretanto um padrão muito heterogêneo de proteínas urinárias pode ser observado e diferiu entre animais hígidos e animais com leishmaniose, assim como entre os animais tratados e não tratados. Os resultados sugerem que a classificação da proteinúria pode ser uma ferramenta que auxilia no estadiamento de animais infectados por L. infantum podendo diferenciá-los quanto à gravidade de lesões renais existentes.

The effects of sex, body length, and different habitats on the serum protein electrophoresis of the broad-snouted caiman (Caiman latirostris).

BACKGROUND: Knowledge of mammalian inflammatory responses is vast; however, many aspects of the inflammatory response in non-mammalian vertebrates, such as reptiles, remain unclear, including those regarding acute-phase proteins (APPs). Recent studies have focused on the use of serum protein electrophoresis (SPE) to assess inflammatory responses in the broad-snouted caiman (Caiman latirostris) and other reptiles. OBJECTIVES: The purpose of this study was to examine the effects of sex, body length, and different habitats on SPE patterns in C latirostris using sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). METHODS: A total of 40 animals of both sexes and varying body lengths were collected; of these, 23 were free-living in an industrial complex (site 1), and 17 were captive on a rural property (site 2). Sodium dodecyl sulfate-polyacrylamide gel electrophoresis was performed to fractionate different serum protein constituents. RESULTS: Sex affected protein levels, with females showing higher serum levels of total protein, as well as the 90-, 66-, and 58-kDa proteins compared with males. Similarly, body length affected protein levels, with male adults >1.70 m in length showing the lowest serum levels of 152-, 58-, 54-, and 27-kDa proteins of all other animals. Finally, habitat affected protein levels, with animals at site 1 showing higher serum levels of 152- and 41-kDa proteins compared with those at site 2. CONCLUSIONS: This preliminary study was the first to evaluate the SPE of C latirostris using SDS-PAGE. Further studies to identify the proteins in each band with more specific and sensitive techniques (eg, mass spectrometry) should be conducted to elucidate the standard of APPs in reptiles better.

Plasma cholinesterase activity as an environmental impact biomarker in juvenile green turtles (Chelonia mydas) / Atividade da colinesterase plasmática como biomarcador de impacto ambiental em tartarugas verdes juvenis (Chelonia mydas)

The objective of this study was to evaluate the enzymatic activity of plasma cholinesterase in Chelonia mydas marine turtles belonging to two populations, according to their capture sites, under the absence and probable influence of anthropic effects. A total of 74 animals were used and later divided into two groups, based on the capture site. Blood samples were collected from all captured animals, which were then released into the sea at the site of capture. A descriptive statistical analysis of the plasma cholinesterase activity values and an analysis comparing these values based on the capture site were performed. Samples of heparinized plasma from animals captured at the two different sites were analyzed. Plasma cholinesterase activity ranged from 121 to 248U/L, with a mean and standard deviation of 186.1±30.68U/L. When comparing plasma cholinesterase activity values in individuals based on the capture site, a significant difference was observed. Establishing reference values for different sea turtle populations is necessary to interpret future sampling results and to allow sea turtles to be used as sentinels of ecosystem health. Future studies are needed to evaluate other populations and the activity of plasma cholinesterase in juvenile marine turtles, in relation to environmental contamination.(AU)

O objetivo desse estudo foi avaliar a atividade enzimática da colinesterase plasmática em tartarugas marinhas da espécie Chelonia mydas em duas populações de acordo com o local de captura, sob ausência e provável influência de efeito antrópico. Foi utilizado um total de 74 animais e posteriormente divididos em dois grupos de acordo com o local de captura. Foram coletadas amostras de sangue de todos os animais capturados e em seguida liberados ao mar no mesmo local. Foi realizada uma análise estatística descritiva dos valores da atividade plasmática de colinesterase do total de animais e análise comparando os valores de acordo com o local de captura. Foram analisadas amostras de plasma heparinizado de animais capturados em dois locais distintos. Os valores da atividade plasmática de colinesterase variaram de 121 a 248U/L, com média e desvio padrão de 186.1±30.7U/L. Quando comparados os valores de atividade plasmática da colinesterase nos indivíduos de acordo com o local de captura, foi observada diferença significativa. O estabelecimento de valores de referência para diferentes populações de tartarugas marinhas são necessários para interpretar os futuros resultados amostrais e permitir que as tartarugas marinhas sejam usadas como sentinelas da saúde do ecossistema. Estudos futuros são necessários para avaliar outras populações e a atividade da colinesterase plasmática de tartarugas marinhas juvenis em relação à contaminação ambiental.(AU)

Serum amyloid A and muscle activity biomarkers in horses submitted to equestrian show jumping / Biomarcadores de amilóide sérica A e de atividade muscular em cavalos submetidos a salto equestre

The aim of this study was to evaluate the serum amyloid A (SAA) and biomarkers of muscle activity of horses submitted to show jumping activity. To do this, the variables SAA, glucose, lactate and the biomarkers creatine kinase (CK) and aspartate amino transferase (AST) were evaluated in 10 horses submitted to the show jumping exercise in a tournament for beginners. The evaluations occurred before exercise (T0), immediately after (T1), 30 minutes (T2), 60 minutes (T3) and 24 hours after the end (T4). Data were evaluated using analysis of variance for repeated measures. The statistical software SAEG 9.1 was used to verify the level of significance between the moments for P<0.05. Glucose presented a difference between the moments T0 (97.7±13.3mg/dL) and T1 (79.7±14.1mg/dL). Lactate presented elevation in T1 (15.3±6.1mmol/L) compared to the others T0 (3.8±0.8mmol/L), T2 (6.5±3.9mmol/L), T3 (5.3±2.2mmol/L) and T4 (5.1±1.6mmol/L). The CK showed a significant difference between T0 (82.8±51.2U/L) and T1 (140.1±58.5U/L) and between T4 (74.4±43.1U/L) with T1 (140.1±58.5U/L). The AST presented no difference between moments. The show jumping activity with one-meter obstacles did not induce changes in the SAA protein between the moments.(AU)

O objetivo deste estudo foi avaliar a amilóide sérica A (SAA) e biomarcadores de atividade muscular de equinos submetidos a atividade de salto, ou hipismo clássico. Para tanto, foram avaliadas as variáveis SAA, glicose, lactato e os biomarcadores creatina quinase (CK) e aspartatoaminotransferase (AST) em 10 equinos submetidos ao exercício de saltos em torneio para iniciantes. As avaliações ocorreram antes do exercício (T0), imediatamente após (T1), 30 minutos (T2), 60 minutos (T3) e 24 horas após o término (T4). Os dados foram avaliados utilizando análise de variância para medidas repetidas. O software estatístico SAEG 9.1 foi utilizado para verificar o nível de significância entre os momentos para P<0,05. A glicose diferenciou-se entre os momentos T0 (97.7±13.3mg/dL) e T1 (79.7±14.1mg/dL). O lactado apresentou elevação comparada com o momento T1(15.3±6.1mmol/L) e os demais T0 (3.8±0.8mmol/L), T2 (6.5±3.9mmol/L), T3 (5.3±2.2mmol/L) e T4 (5.1±1.6mmol/L). A CK mostrou diferença significativa entre T0 (82.8±51.2U/L) e T1 (140.1±58.5U/L) e entre T4 (74.4±43.1U/L) com T1 (140.1±58.5U/L). A AST não apresentou diferença entre os momentos. A atividade de hipismo clássico com obstáculos de um metro não induziu alterações na proteína SAA entre os momentos.(AU)

Avaliação de parâmetros bioquímicos séricos em Tartarugas-da-Amazônia (Podocnemis expansa) mantidas em cativeiro / Evaluation of serum biochemical parameters in Amazon turtles (Podocnemis expansa) hatchlings kept in captivity

Amostras de sangue de Tartaruga-da-Amazônia mantidas em cativeiro foram analisadas com o propósito de avaliar os constituintes bioquímicos séricos e de relacionar ao que já foi relatado por outros pesquisadores, além de gerar mais informações, tendo em vista a escassez de dados envolvendo a espécie estudada. Foram utilizados 35 animais, com idade entre 3 e 7 meses, os quais foram contidos fisicamente para coleta de sangue em tubo sem anticoagulante. As análises bioquímicas foram processadas através de métodos cinéticos (enzimas) e colorimétricos (demais análises), e os valores médios obtidos foram: cálcio 7,0±1,9mg/dL, fóforo 2,8±1,2mg/dL, ácido úrico 1,8±0,8mg/dL, uréia 10,4±3,9mg/dL, alanina aminotransferase (AST) 75,5±33,6 UI/L, proteína total 1,9±0,8g/dL, triglicerídeos 22,9±9,8mg/dL e colesterol 45,3±19,7mg/dL. Observou-se que os valores dos componentes séricos avaliados assemelham-se aos que foram encontrados por outros pesquisadores em estudos bioquímicos séricos com Podocnemis expansa e outras tartarugas de água doce. Importante ressaltar que, no decorrer deste estudo observou-se a escassez de dados publicados sobre parâmetros sanguíneos de tartarugas do gênero Podocnemis, especialmente a espécie Podocnemis expansa, o que corroborou a alta relevância do desenvolvimento de mais pesquisas que envolvam a questão.(AU)

Blood samples from the giant river turtle kept in captivity were analyzed in order to evaluate the serum biochemical constituents and relate to what has been reported by other researchers, beyond the purpose of generating further information, given the paucity of data involving this species. The turtle eggs were from the state of Tocantins and were obtained from direct sampling in their natural habitat. After being collected the eggs were kept in incubators and then the puppies were kept in tanks. Samples were collected after chemical restraint of these animals by intracardiac puncture or cardiocentesis. The samples were centrifuged to obtain serum. Biochemical analyzes were processed by kinetic and colorimetric methods, as described by the manufacturer, and the values obtained were: calcium 7.0±1.9mg/dL, phosphorus 2.8±1.2mg/dL, uric acid 1.8±0.8mg/dL, BUN 10.4±3.9mg/dL, alanine aminotransferase (AST) 75.5±33.6 IU/L, total protein 1.9±0.8g/dL, triglycerides 22.9±9.8mg/dL and cholesterol 45.3±19.7mg/dL. It was observed that the values of the evaluated blood components are similar to those found by other researchers in serum biochemical studies with samples of Podocnemis expansa. During this study we observed the paucity of published data on blood parameters of Podocnemis genus, especially P. expansa species, which confirmed the high relevance of the development of further research involving this topic.(AU)

Valores hematológicos e bioquímicos de pinguins-de-Magalhães em reabilitação no Espírito Santo, sudeste do Brasil / Hematological and biochemical values of Magellanic penguins in rehabilitation in Espírito Santo, southeastern Brazil

Este trabalho apresenta valores hematológicos e bioquímicos de pinguins-de-Magalhães (Spheniscus magellanicus) juvenis que arribaram no Espírito Santo e Rio de Janeiro, litoral sudeste do Brasil, e foram encaminhados a reabilitação. Os valores médios obtidos foram: eritrócitos 2.55±0.54 milhões/µL; hemoglobina 13,37±3,91g/dL; hematócrito 41,5±0,04%; proteína plasmática 6,34±0,81g/dL; leucócitos 16.301±6.402/µL; trombócitos 20.516±4.591 células/µL; volume corpuscular médio (VCM) 172,0±53,0 fL; concentração de hemoglobina corpuscular média (CHCM) 26,41±0,02%; alanina transaminase (ALT) 50,0±17,89 U/L; ácido úrico 8,93±3,0mg/dL; albumina 1,68±0,53g/dL; cálcio 9,7±0,57mg/dL; fósforo 10,39±8,5mg/dL e glicose 211,6±30,3mg/dL. Valores de eritrócitos, VCM e CHCM foram discrepantes em relação aos valores de referência atuais. Valores de leucócitos e trombócitos tem significado inconclusivo. Hematócrito, hemoglobina, proteína plasmática e valores bioquímicos forneceram importante contribuição para o estabelecimento de parâmetros de referência.(AU)

This paper reports hematological and biochemical values of juveniles Magellanic penguins (Spheniscus magellanicus) stranded in Espírito Santo and Rio de Janeiro, Southeastern Brazil, that were sent for rehabilitation. The average values were: erythrocytes 2.55±0,54 milhões/µL, hemoglobin 13.37±3,91g/dL, hematocrit 41.5±0.04%, plasma protein 6.34±0.81g/dL, leukocytes 16,301±6,402/µL, thrombocytes 20,516±4,591 células/µL3, mean cell volume (MCV) 172.0±53.0 fL, mean cell hemoglobin concentration (MCHC) 26.41±0.02%, alanine transaminase (ALT) 50.0±17.89 U/L, uric acid 8.93±3.0mg/dL, albumin 1.68±0.53mg/dL, calcium 9.7±0.57mg/dL, phosphorus 10.39±8.5mg/dL and glucose 211.6±30.3mg/dL. Values of erythrocytes, MCV and MCH were discrepant in relation to the current reference values. Leukocytes and thrombocytes values has meant inconclusive. Hematocrit, hemoglobin, plasma protein and biochemical values provided important contribution for the establishment of reference parameters.(AU)

Atividade da colinesterase plasmática como biomarcador de impacto ambiental em tartarugas verdes (Chelonia mydas) no litoral do Arquipélago de Fernando de Noronha, Pernambuco / Plasma cholinesterase activity as environmental impact biomarker for green turtles (Chelonia mydas) on the coast of Fernando de Noronha, Pernambuco, Brazil

Biomarcadores podem ser usados de forma preditiva, permitindo que sejam tomadas ações de controle antes que ocorram danos ambientais irreversíveis com consequências ecológicas severas, no entanto, espécies sentinelas são necessárias para avaliação desses marcadores. As tartarugas marinhas são consideradas espécies sentinelas quando acometidas por fibropapilomas, sendo sinalizadora do desequilíbrio ambiental marinho nas suas áreas de ocorrência. Com o objetivo de propor a determinação da atividade da colinesterase plasmática em tartarugas verdes (Chelonia mydas) como biomarcador, procedeu-se a determinação da atividade enzimática em animais saudáveis e em localidade de baixo impacto antrópico (Arquipélago de Fernando de Noronha, Pernambuco, Brasil) para servir como referência para comparação com animais capturados em locais de maior impacto antrópico. Ao todo foram analisadas amostras de plasma heparinizado de 35 animais capturados. Todas as amostras analisadas apresentaram alguma atividade enzimática de colinesterase plasmática. Os valores obtidos de colinesterase variaram de 162 a 379 UI/L, com média e desvio padrão de 216,4 ± 51,4 UI/L. Nos estudos de repetibilidade e reprodutibilidade obtiveram-se coeficientes de variação menor que 5% em todas as análises, portanto a metodologia analítica utilizada se mostrou confiável. A longevidade das tartarugas marinhas da espécie C. mydas, o comportamento alimentar, juntamente com o fato de possuirem atividade enzimática detectável podem indicar essa espécie como bioindicadora de exposição a poluentes que influenciam na atividade da colinesterase plasmática.(AU)

Biomarkers can be used in a predictive manner, permitting actions control to be taken before they occur irreversible damage with severe environmental ecological consequences, however, sentinel species are needed to evaluate these markers. Sea turtles affected by fibropapillomas are considered sentinel species, signaling the marine environmental imbalance in their areas of occurrence. With the objective to use the plasma cholinesterase activity in green turtles (Chelonia mydas) as a biomarker, the measurement of enzyme activity was evaluated in healthy animals and in location of low pollution impact (Fernando de Noronha, Pernambuco, Brazil) to serve as a reference for comparison with animals trapped in places with higher pollution impact. Were analyzed heparinized plasma samples from 35 captured animals. All samples analyzed showed enzymatic activity of plasma cholinesterase. The values obtained ranged between 162-379 IU/L, with mean and standard deviation of 216.4 ± 51.4 IU/L. In studies of repeatability and reproducibility were obtained variance coefficients of less than 5% in all analyzes, so the analytical methodology proved successful. The longevity of marine turtles of the species C. mydas, feeding behavior, along with the fact possess detectable enzyme activity may indicate this species as a bioindicator of exposure to pollutants that influence plasma cholinesterase activity.(AU)

Lactacidemia e concentrações séricas de aspartato aminotransferase e creatinoquinase em equinos da raça quarto de milha usados em provas de laço em dupla / Influence of physical exercise on serum activities of AST and CK and plasma concentration of lactate in quarter horses submitted to team roping

O presente estudo teve por objetivo avaliar a influência do exercício físico de alta intensidade e curta duração (provas de laço em dupla) sobre a lactacidemia e as concentrações séricas de aspartato aminotransferase (AST) e creatinoquinase (CK) em equinos durante competição realizada no estado do Espírito Santo. Para tal foram obtidas amostras de soro e plasma de 20 equinos, da raça Quarto de Milha ou mestiços, em três momentos assim definidos: no repouso, uma semana antes da prova atlética, já com o animal em treinamento (T0); antes da prova atlética (T1) e imediatamente após o término da mesma (T2). As referidas amostras foram encaminhadas ao Laboratório Clínico do Centro Universitário Vila Velha (UVV) para as análises. Na avaliação da lactacidemia, os resultados registrados nos momentos T0, T1 e T2 foram, respectivamente, de 0,49±0,24mmol/L, 0,93±0,16mmol/L e 9,86±2,09mmol/L. Na avaliação da atividade sérica de AST, os resultados registrados nos momentos T0, T1e T2 foram, respectivamente, de 189,1±43,6 UI/L, 210,2±46,7 UI/L e 173,1±33,5 UI/L. Por fim, a avaliação da atividade sérica da CK nos momentos T0,T1 e T2 foram,respectivamente, de 110,9±35,2 UI/L, 51,8±15,4 UI/L e 88,2±33,5 UI/L. A análise dos resultados demonstrou que o exercício físico imposto levou ao aumento significativo de lactato plasmático e CK sérica e não alterou o AST sérico e que a interpretação destes resultados permitiu concluir que os equinos usados estavam aptos ao nível de exercício físico imposto.

The aim of the present study was to evaluate the effects of high intensity and short duration physical exercise (roping team competition) on plasma lactate and serum AST and CK concentrations in horses during competition at Espírito Santo state, Brazil. Blood samples were obtained from 20 Quarter Horses, or cross-bred, in three moments: (1) at rest, one week before the competition, with the animals being trained, (2) just before the competition, and (3) immediately after the exercise. The samples were sent to Laboratório Clínico do Centro Universitário Vila Velha for analysis. Plasma lactate concentrations were 0.49±0.24mmol/L, 0.93±0.16mmol/L e 9.86±2.09mmol/L, respectively, on the moments rest and immediately before and after the exercise. Serum concentrations of AST were 189.1±43.6 IU/L, 210.2±46.7 IU/L e 173.1±33.5 IU/L, respectively, on the moments rest and immediately before and after the exercise. Finally, serum concentrations of CK were 110.9±35.2 IU/L, 51.8±15.4 IU/L and 88.2±33.5 IU/L, respectively, on the moments rest and immediately before and after the exercise. Results showed that the imposed physical exercise leaded to a significant elevation of plasma lactate and serum CK without alteration on AST. It was possible to conclude that horses were adapted to the level of exercise performed.