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At least 1,531 records · Page 85Linked to original sources
PubMed1978

Virus infection in demyelinating diseases.

Several animal and human demyelinating diseases of the central nervous system (CNS) are associated with RNA or DNA viruses. These viruses infect CNS cells lytically or persistently. They mainly belong to the group of envelope viruses which derive their envelope partly from the host cell membrane. The process of virus release may result in the appearance of new antigens of virus-infected cells or the incorporation of cell membrane material into the viral envelope. These changes may lead to an immune response which selectively injures the CNS. These alterations of host cell membranes and host cell functions, together with the immune mechanism, are central to many of the hypotheses regarding virus-induced demyelination. The role of virus infection in progressive multifocal leukoencephalopathy, subacute sclerosing panencephalitis, visna and mouse hepatitis virus infections, is discussed in relation to the demyelinating process of these diseases.

Animals↗
PubMed1999

Cross-species vaccination in wild and exotic animals.

These are two examples of organisms which may cause morbidity and/or mortality among numerous unrelated species. Since it is cost prohibitive in most instances to have a biological licensed for wild or exotic species, it remains a challenge to the zoo or wildlife veterinarian to determine if a licensed vaccine for other species is safe and efficacious for a particular exotic species.

Animal Diseases↗
PubMed1997

Comparative antibody response in harbour and grey seals naturally infected by a morbillivirus.

The antibody response of free-ranging harbour and grey seals, naturally infected by a morbillivirus, was assessed using a virus neutralizing test and a radio-immunoprecipitation assay. The prevalence of antibody was similar between species, however, grey seals had significantly higher virus neutralizing titers. Serum from clinically healthy grey seals precipitated the nucleocapsid (N) protein along with the hemagglutinin (H) and fusion (F) glycoproteins. By contrast, significantly fewer harbour seal sera precipitated the envelope glycoproteins and responses were weaker than those of grey seals. One harbour seal with acute morbillivirus pneumonia, and two with encephalitis precipitated only the N protein. Serum from four harbour seals with encephalitis weakly recognized the envelope glycoproteins. Thus, the antibody response of grey seals appears more competent than that of harbour seals with respect to morbillivirus antigens. We speculate that this difference between the species may be an important determinant of morbillivirus susceptibility.

Animals↗
PubMed1985

Viral respiratory diseases.

An overview of the more commonly encountered viral diseases of the dog and cat is presented. The reader is acquainted with the principles of antiviral therapy and the drugs that have been studied for use in animal viral respiratory diseases. An update on vaccination principles and guidelines is provided.

Animals↗
PubMed2002

Postpartum live virus vaccination: lessons from veterinary medicine.

Pregnant rubella-susceptible women are often revaccinated during the postpartum period with the Measles, Mumps, and Rubella vaccine (MMR). It is known that the rubella virus from vaccine is secreted in breast milk and persists in the nose and throat for up to 28 days but it is not known whether the measles and mumps viruses are similarly secreted. It is probable the measles virus from vaccine is.

Animals↗
PubMed2005

Tissue distribution of perfluorinated chemicals in harbor seals (Phoca vitulina) from the Dutch Wadden Sea.

Perfluorinated acids (PFAs) are today widely distributed in the environment, even in remote arctic areas. Recently, perfluorooctane sulfonate (PFOS) has been identified in marine mammals all over the world, but information on the compound-specific tissue distribution remains scarce. Furthermore, although longer perfluorinated carboxylic acids (PFCAs) are used in industry and were shown to cause severe toxic effects, still little is known on potential sources or their widespread distribution. In this study, we report for the first time on levels of longer chain PFCAs, together with some short chain PFAs, perfluorobutane sulfonate (PFBS) and perfluorobutanoate (PFBA), in liver, kidney, blubber, muscle, and spleen tissues of harbor seals (Phoca vitulina) from the Dutch Wadden Sea. PFOS was the predominant compound in all seal samples measured (ranging from 89 to 2724 ng/g wet weight); however, large variations between tissues were monitored. Although these are preliminary results, it is, to our knowledge, the first time that PFBS could be found at detectable concentrations (2.3 +/- 0.7 ng/g w wt) in environmental samples. PFBS was only detected in spleen tissue. PFCA levels were much lower than PFOS concentrations. The dominant PFCA in all tissues was PFNA (perfluorononanoic acid), and concentrations generally decreased in tissues for all other PFCA homologues with increasing chain length. No clear relationship between PFOS levels in liver and kidney was observed. Furthermore, hepatic PFDA (perfluorodecanoic acid) levels increased with increasing body length, but in kidney tissue, PFDA levels showed an inverse relationship with increasing body length. These data suggest large differences in tissue distribution and accumulation patterns of perfluorinated compounds in marine organisms.

Alkanesulfonic Acids↗