Search PubMed⌕ Search

Biomedical subjects

I A Patterson

Publications and source records attributed to I A Patterson.

10 recordsLinked to original sources
PubMed1999

Monophasic group B Salmonella species infecting harbour porpoises (Phocoena phocoena) inhabiting Scottish coastal waters.

A monophasic strain of Salmonella group B having the antigenic structure 4, 12: a: - was isolated in culture from various tissues of 39 harbour porpoises (Phocoena phocoena). The tissue from which the organism was recovered most frequently was lung in 33 animals and intestine in 16 animals, but it was also isolated from heart valve, liver, kidney, spleen, mesenteric lymph node, pulmonary lymph node, hepatic lymph node, urethra, sheath and epididymis. As far as we are aware this is the first record of this strain from an animal source, raising the possibility that it may be host-adapted to harbour porpoises. The possible modes of transmission of monophasic group B Salmonella between porpoises are discussed.

Agglutination Tests↗
PubMed1998

Evidence for infanticide in bottlenose dolphins: an explanation for violent interactions with harbour porpoises?

Most harbour porpoises found dead on the north-east coast of Scotland show signs of attack by sympatric bottlenose dolphins, but the reason(s) for these violent interactions remain(s) unclear. Post-mortem examinations of stranded bottlenose dolphins indicate that five out of eight young calves from this same area were also killed by bottlenose dolphins. These data, together with direct observations of an aggressive interaction between an adult bottlenose dolphin and a dead bottlenose dolphin calf, provide strong evidence for infanticide in this population. The similarity in the size range of harbour porpoises and dolphin calves that showed signs of attack by bottlenose dolphins suggests that previously reported interspecific interactions could be related to this infanticidal behaviour. These findings appear to provide the first evidence of infanticide in cetaceans (whales, dolphins and porpoises). We suggest that infanticide must be considered as a factor shaping sociality in this and other species of cetaceans, and may have serious consequences for the viability of small populations.

Age Factors↗
PubMed1998

Actinobacillus scotiae sp. nov., a new member of the family Pasteurellaceae Pohl (1979) 1981 isolated from porpoises (Phocoena phocoena).

Phenotypic and phylogenetic studies were performed on a Gram-negative, rod-shaped bacterium isolated from three porpoises. Biochemical and physiological studies indicated that the bacterium was related to the family Pasteurellaceae. Comparative 16S rRNA gene sequencing studies confirmed these findings and demonstrated that the bacterium represents a hitherto unknown subline. The nearest phylogenetic relative of the unknown bacterium was Actinobacillus delphinicola, an organism also originating from sea mammals, although a sequence divergence of 3% demonstrated that the newly isolated bacterium is a distinct species. On the basis of the results of the phylogenetic analysis and phenotypic criteria, it is proposed that the bacterium should be classified as a new species, Actinobacillus scotiae sp. nov. The type strain of Actinobacillus scotiae sp. nov. is NCTC 12922T (= M2000/95/1T).

Actinobacillus↗
PubMed1992

'Downer ewes'.

Explore the source record for details and available documents.

Animals↗
PubMedDate not supplied

Chronic meningoencephalitis associated with Brucella sp. infection in live-stranded striped dolphins (Stenella coeruleoalba).

A chronic, non-suppurative meningoencephalitis was found in three young striped dolphins (Stenella coeruleoalba) during routine neuropathological examination of marine mammals live-stranded on the Scottish coast. In all three dolphins the lesions were associated with the isolation of a Brucella sp. from the brain and with the immunohistochemical detection of brucella antigen. Moreover, antibodies to Brucella spp. were detected in the two dolphins that were subjected to serological examination. Immunohistochemical and serological examinations for morbillivirus antigen and antibodies, respectively, were negative in all cases. Although brucella infection of marine mammals has been extensively documented in recent years, its association with lesions and disease is less well recognized. The present report provides the first description of an association between Brucella sp. infection and neuropathological changes in a cetacean species.

Animals↗
PubMedDate not supplied

Comparison of the absorbed ELISA and agar gel immunodiffusion test with clinicopathological findings in ovine clinical paratuberculosis.

Thirty-two sheep with clinical paratuberculosis and 43 normal, healthy control animals were tested for serum antibodies to Mycobacterium avium subspecies paratuberculosis with the absorbed enzyme-linked immunosorbent assay (ELISA) and agar gel immunodiffusion (AGID) test. All the sheep were necropsied and the diseased cases were categorised as having either multibacillary ('lepromatous') or paucibacillary ('tuberculoid') intestinal lesions. The ELISA and AGID test were highly sensitive when testing the multibacillary group (86.4 per cent and 100 per cent, respectively) but the sensitivity of the tests in the paucibacillary group was significantly lower (10 to 50 per cent and 30 per cent, respectively). These findings were related to the ELISA optical density readings, with the multibacillary samples having values significantly greater than those of the paucibacillary and control groups, and the optical density values appearing to correlate with the numbers of mycobacteria present in the intestinal lesions. These results indicate both the usefulness of serological testing in the diagnosis of the multibacillary form of paratuberculosis and the difficulty in identifying animals with the paucibacillary form of the disease.

Animals↗