Veterinární medicína, 2007 (vol. 52), issue 9
Hepatitis E virus: a review
P. Vasickova, I. Psikal, P. Kralik, F. Widen, Z. Hubalek, I. Pavlik
Vet Med - Czech, 2007, 52(9):365-384 | DOI: 10.17221/1999-VETMED 
The hepatitis E virus (HEV), the causative agent of hepatitis E, is a non-enveloped RNA virus. The HEV genome is formed by a non-segmented positive-sense RNA chain. The 3´end of the chain is polyadenylated and the 5´end is structurally characterised by the so called "capping". According to currently accepted taxonomy, HEV is classified in the genus Hepevirus, the only member of the Hepeviridae family. HE is usually transmitted via the faecal-oral route due to the fact that drinking water or water for industrial purposes is contaminated due to poor sanitation. This spread of HEV has been reported in developing countries of Asia, Africa, South...
Intraspecific and interspecific chemosignals in birds: a review
J. Rajchard
Vet Med - Czech, 2007, 52(9):385-391 | DOI: 10.17221/2000-VETMED
This review of chemosignals in birds considers intraspecific oriented chemosignals such as pheromones, interspecific chemosignals, and chemical interactions with parasites. Intraspecific chemosignals are known in some seabirds, especially burrow- or crevice-nesting auklets and petrels that breed in large colonies and are often nocturnal on land. Crested Auklets secrete a distinctive scent closely associated with courtship and important in sexual selection. Individually distinctive odours of petrels allow them to identify their own nest and can have a significant role in social relationships. Substances considered as sex pheromones, diesters of 3-hydroxy...
Isolation of conditionally pathogenic mycobacteria from the environment of one pig farm and the effectiveness of preventive measures between 1997 and 2003
I. Pavlik, L. Matlova, M. Gilar, J. Bartl, I. Parmova, F. Lysak, M. Alexa, L. Dvorska-Bartosova, V. Svec, V. Vrbas, A. Horvathova
Vet Med - Czech, 2007, 52(9):392-404 | DOI: 10.17221/1997-VETMED
Between 1997 and 2003, in one herd of breeding pigs with 90 sows and two boars, positive and dubious responses to avian tuberculin were detected in 4 and 72 pigs, respectively. Pigs were examined using the agglutination test for the presence of serum antibodies against corpuscular antigens prepared from various Mycobacterium avium complex (MAC) members: M. a. avium (MAA) of serotype 2, M. a. hominissuis (MAH) of serotype 8 and M. intracellulare (MI) of serotype 19. Positive skin responses were found in animals with antibodies against MAH (18; 23.7%), MAA (3; 4.0%) and MI (9; 11.8%)...
Molecular regulation of progesterone synthesis in the bovine corpus luteum
R. Rekawiecki, J. Kotwica
Vet Med - Czech, 2007, 52(9):405-412 | DOI: 10.17221/1996-VETMED
In bovine luteal cells, progesterone can directly affect its own synthesis by increasing the activity of 3β-HSD. The effect of progesterone on its own secretion coincides with increased expression of the genes for 3β-HSD, StAR, and cytochrome P450scc. Therefore, progesterone regulates its own synthesis by affecting the activity of the enzymes that take part in luteal steroidogenesis, and also by affecting the expression of the genes for these enzymes. The aims of this study were: (a) to determine whether progesterone affects the expression of the gene for its own receptor, thereby affecting its own synthesis; and (b) to determine whether...
Treatment of ovarian cysts in sows - a field trial
S. Cech, R. Dolezel
Vet Med - Czech, 2007, 52(9):413-418 | DOI: 10.17221/1995-VETMED
Different procedures of treatment of large follicular ovarian cysts in 177 sows using GnRH, hCG and PGF2α are evaluated in this study. Ovarian cysts were diagnosed by transcutaneous ultrasonography, which was a part of routine pregnancy diagnosis. No treatment was performed in the control group (Group 1, n = 29); the method of treatment used in the other groups immediately after the diagnosis was intramuscular administration of lecirelin in doses 50 µg (Group 2, n = 28), 100 µg (Group 3, n = 27) and 200 µg divided into 2 equal doses administered at a 12-hour interval (Group 4, n = 25) and of hCG in...
Schmidt's syndrome in a dog: a case report
J. Pikula, J. Pikulova, H. Bandouchova, P. Hajkova, M. Faldyna
Vet Med - Czech, 2007, 52(9):419-422 | DOI: 10.17221/1998-VETMED
This report describes a clinical case and development of the polyglandular failure syndrome including hypothyroidism and hypoadrenocorticism in a 6-year-old female Black Russian Terrier. The bitch was presented because of hypothyroidism on the first occasion. Oral supplementation with sodium levothyroxine resulted in clinical improvement. Four months later, it was presented again with similar and rather vague clinical signs and diagnosed with adrenocortical deficiency both in mineralocorticoid and glucocorticoid functions. Indirect immunofluorescence to investigate the presence of circulating autoantibodies against the thyroid and adrenal glands revealed...