RESUMO
The absolute and relative adrenal mass as well as histological sections of the adrenals of springbok (Antidorcas marsupialis) (n = 76; 36 ewes and 39 rams) were studied over a period of 12 months. No significant difference was found in the absolute mass of the adrenals of rams and ewes. However, a significant difference (p < 0.01) was found in the relative masses (adrenal mass in terms of carcass mass), in that relative masses in males were greater than females. The zona fasciculata was found to be enlarged during the dry season (February and March), and showed increased activity in both sexes. The zona fasciculata of the ewes showed an additional increase in activity during September (late pregnancy) and October (lactation). In rams increased activity of the zona fasciculata was seen during the mating season in April and May. It appears that stressful events during reproduction and during the dry season cause an increase in adrenal mass and activity.
Assuntos
Glândulas Suprarrenais/anatomia & histologia , Ruminantes , Estresse Fisiológico/veterinária , Glândulas Suprarrenais/patologia , Fatores Etários , Fenômenos Fisiológicos da Nutrição Animal , Animais , Animais Selvagens/anatomia & histologia , Peso Corporal , Feminino , Lactação , Masculino , Tamanho do Órgão , Gravidez , Ruminantes/anatomia & histologia , Estações do Ano , Fatores Sexuais , África do Sul , Estresse Fisiológico/patologiaRESUMO
A simple, reliable and reproducible enzyme-linked immunosorbent assay (ELISA) using polyclonal antibodies for human cortisol binding globulin (CBG) has been developed. The sensitivity of the ELISA (1.20 fmol CBG/well) compared favourably with the sensitivity of other immunoassays. The excellent agreement (r = 0.98) seen between the present study and a binding assay indicates that the polyclonal antibodies used recognize only intact steroid-binding CBG. The intra- and inter-assay coefficient of variation (4.0% and 7.1% respectively) compared favourably with those reported by other authors.
Assuntos
Proteínas de Transporte/sangue , Ensaio de Imunoadsorção Enzimática/métodos , Humanos , Hidrocortisona/metabolismoRESUMO
The cord blood levels of IgG, IgA and IgM in newborn white, coloured and black infants in the Western Cape were measured using a nephelometric technique. A statistically significant difference was found between the IgG values in the different population groups, but no significant difference was found in IgA and IgM values.
Assuntos
Imunoglobulina A/análise , Imunoglobulina G/análise , Imunoglobulina M/análise , Recém-Nascido , População Negra , Feminino , Sangue Fetal/imunologia , Humanos , Masculino , Valores de Referência , África do Sul , População BrancaRESUMO
Chemopathological changes were monitored in 20 experimentally infected and 70 clinical cases of feline babesiosis. Total serum proteins remained unchanged but there was a definite increase in gamma globulin and decrease in alpha and beta globulins. In most cases liver function was essentially normal although function tests occasionally indicated hepatic dysfunction. Renal function was unaffected. Venous blood pH remained normal throughout. Post mortem findings on the experimental cats included bile stasis and hepatic necrosis in some; marked internal icterus was only seen in 2 cases.
