A review of immune transfer by the placenta

Chucri, Thaís Martins; Monteiro, Jhonatas Sirino; Lima, Ana Rita de; Salvadori, Maria Letícia Baptista; Kfoury, José Roberto; Moody, M. Anthony

doi:10.1016/j.jri.2010.08.062

Cited by 120 publications

(79 citation statements)

References 50 publications

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“…In addition, other colostrum nutrients (fat, protein, and vitamins) and factors with regulative function (cytokines, growth factors, enzymes, and hormones) are important in the development of the immune defense systems (leukocytes and lactoferrin). Colostrum IgG1 supplies the initial immune defense that the calf requires for the first weeks of its life because the epitheliochorial placenta of cattle does not allow the passage of immunoglobulins during pregnancy (Chucri et al, 2010). If the intake of antibodies from the colostrum is insufficient or absent, a significantly higher risk of morbidity or mortality exists (McGuire et al, 1976;Donovan et al, 1986;Rea et al, 1996).…”

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confidence: 99%

Short communication: Fractional milking distribution of immunoglobulin G and other constituents in colostrum

Vetter

Argüello

Baumrucker

et al. 2013

Journal of Dairy Science

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The provision of quality colostrum with a high concentration of immunoglobulins is critical for newborn calf health. Because first colostrum may be low in overall concentration to effectively reduce the risk of newborn infections, we tested equivalent milking fractions of colostrum for possible IgG differences. The objective of this study was to determine if the fractional composition of colostrum changes during the course of milking with a focus on immunoglobulins. Twenty-four Holstein and Simmental cows were milked (first colostrum) within 4 h after calving. The colostrum of 1 gland per animal was assembled into 4 percentage fractions over the course of milking: 0 to 25%, 25 to 50%, 50 to 75%, and 75 to 100%. The IgG concentration among the various fractions did not change in any significant pattern. Concentration of protein, casein, lactose and somatic cell count remained the same or exhibited only minor changes during the course of fractional milking colostrum. We determined that no benefit exists in feeding any particular fraction of colostrum to the newborn.

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confidence: 99%

Short communication: Fractional milking distribution of immunoglobulin G and other constituents in colostrum

Vetter

Argüello

Baumrucker

et al. 2013

Journal of Dairy Science

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“…em potros, antes de ingerirem colostro, permite--nos afirmar que ocorre o contato do protozoário com o sistema imunológico do potro ainda em sua vida intrauterina. Tal fato é explicado pela conformação da placenta das éguas, epitéliocorial difusa, que inviabiliza a transferência de imunoglobulinas maternas para a circulação fetal (Chucri et al 2010). Logo, os anticorpos presentes no soro dos potros são produzidos em seus organismos, sendo assim a transmissão vertical é uma rota de disseminação de Neospora spp.…”

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Verificação da transmissão vertical de Neospora spp. em equinos

et al. 2015

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O gênero protozoário Neospora é reconhecido como causador de desordens reprodutivas e abortos em bovinos. Entre os equinos pouco se sabe sobre os efeitos da infecção por estes protozoários. Atualmente é admitido que os efeitos da infecção por Neospora hughesi em equinos possam ocorrer no sistema nervoso central e, os efeitos provocados pela infecção por Neospora caninum recaiam sobre o sistema reprodutor de éguas. O presente trabalho verificou a presença de imunoglobulinas da classe G no soro sanguíneo de uma população de éguas de cria e, em seus respectivos potros antes da ingestão do colostro. Para execução deste trabalho foi empregada técnica de imunofluorescência indireta (RIFI), utilizando como antígeno taquizoítos de Neospora caninum, a diluição inicial dos soros das éguas foi de 1:50 e a diluição do soro dos potros empregada foi de 1:16. Foram assistidos 78 partos e todos os potros tiveram seu soro sanguíneo coletado imediatamente após o nascimento. A pesquisa de anticorpos contra Neospora spp. apontou que 50 (64%) éguas e 32 (41%) potros foram positivos. Das 50 éguas que apresentaram anticorpos contra Neospora spp. 24 geraram potros positivos. Entre as 28 éguas que não reagiram, oito deram a luz a potros positivos. De posse dos resultados encontrados podemos concluir que ocorreu a transmissão vertical de Neospora spp. nos equinos pesquisados.

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“…The positive results observed in unmated females could be due to the mother's passive immunity. Previous reports of mammals with endotheliochorial placenta, such as dogs, cats and elephants, found around 5-10% of antibody transfer from the mother to the offspring through the placenta (Chucri et al, 2010). Because every female elephant tested had a reaction that yielded a positive result when using the indirect anitglobulin technique, it can be inferred that the serum of every female elephant contained IgG.…”

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confidence: 88%

Blood Compatibility Testing in Asian Elephants Using an Indirect Antiglobulin Technique to Improve Captive Breeding Success

Bansiddhi¹,

Vongchan²,

Satityueny³

et al. 2015

Asian J. of Animal and Veterinary Advances

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Feto-maternal blood incompatibility causes hematological defects that can result in abortion and neonatal anemia and may lead to calf loss, including in elephants. The aim of this study was to examine blood compatibility in Asian elephants using the indirect antiglobulin technique, for use as a breeding management tool to reduce the risk of elephant fetal loss. Forty-four blood samples collected from 22 female and 22 male elephants were subjected to standard tube cross-matching tests and examined for macroscopic and microscopic agglutination reactions. The percentages of positive reactions across three female groups based on reproductive history (unmated, mated but not pregnant, parous) were 43.94, 53.03 and 45.80, respectively and did not differ (p>0.05). Moreover, all female sample showed positive reaction results at ambient and body temperatures. These results suggest blood incompatibility occurs in elephants. Thus, it could be beneficial to avoid mating between reactive blood groups.

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A review of immune transfer by the placenta

Cited by 120 publications

References 50 publications

Short communication: Fractional milking distribution of immunoglobulin G and other constituents in colostrum

Short communication: Fractional milking distribution of immunoglobulin G and other constituents in colostrum

Verificação da transmissão vertical de Neospora spp. em equinos

Blood Compatibility Testing in Asian Elephants Using an Indirect Antiglobulin Technique to Improve Captive Breeding Success

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