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Comparative molecular characterisation of the rabies virus in the Lithuanian raccoon dog population

100%

Zienius D., Zilinskas H., Sajute K., Stankevicius A.

Bulletin of the Veterinary Institute in Puławy

2009

tom 53

nr 2

179-182

The objective of this work was to determine nucleoprotein gene sequences and genetically characterise the rabies virus (RABV) isolates in order to know which virus group (biotype) is circulating in the raccoon dog population in Lithuania. For rabies virus phylogenetic characterisation, 16 RABV isolates from raccoon dogs were used. The isolates were selected according to different geographical location. A 400 bp region of the nucleoprotein gene was sequenced and analysed together with reference raccoon dog sequences of the RABV isolates from Estonia, Latvia, Russia, Poland, and other West European countries available in the GenBank. Phylogenetic analysis revealed that the isolates from different parts of Lithuania were closely related and belonged to RABV genotype 1 and showed significant bootstrap support inside North-Eastern Europe group of raccoon dog RABV. The phylogenetic relationships between Lithuanian raccoon dogs RABV isolates and those from neighbouring countries showed 97.7%- 99.5% identity. A close genetic relationship between the raccoon dog and fox rabies isolates from different regions of Lithuania (99.5%) was identified, suggesting that rabies viruses circulating in raccoon dogs and foxes in this region might have the same origin.

Sexual dimorphism in the whole brain and brainstem morphometry in the African giant pouched rat (Cricetomys gambianus, Waterhouse 1840)

80%

Ibe C. S., Onyeanusi B. I., Hambolu J. O., Ayo J. O.

Folia Morphologica

2010

tom 69

nr 2

The study was conducted to evaluate the sexual dimorphism in the morphometric parameters of the whole brain and the brainstem in adult captive African giant pouched rats. Twenty-nine brain samples, comprising 15 females and 14 males, were utilized. Following brain extraction by standard procedures, the mean values of the weights, lengths, diameters, and volumes of the intact brains and the brainstem structures were compared in male and female rats using quantitative analytical statistical methods. The absolute brain weight obtained in the male was significantly higher (p < 0.01) than that of the female while the relative brain weight obtained in the female (0.636 ± 0.049%) was higher than that of the male rats (0.564 ± 0.032%), although the difference in the values was not statistically significant (p > 0.05). The lengths of the brain and myelencephalon, as well as the weights of the myelencephalon and mesencephalon, did not differ between the two sexes (p > 0.05). The weights and lengths of the pons did not differ between the two sexes (p > 0.05). There was a significant difference (p < 0.05) in the pyramidal length and a highly significant difference (p < 0.01) in the pyramidal width between the two sexes, with the male rats having higher values. This pioneering sexual dimorphic brain morphometry provides information for further research. (Folia Morphol 2010; 69, 2: 69–74)

Ograniczanie wyników

1 Bulletin of the Veterinary Institute in Puławy

1 Folia Morphologica

1 Ayo J. O.

1 Hambolu J. O.

1 Ibe C. S.

1 Onyeanusi B. I.

1 Sajute K.

1 Stankevicius A.

1 Zienius D.

1 Zilinskas H.

1 2010

1 2009

Wyniki wyszukiwania

Comparative molecular characterisation of the rabies virus in the Lithuanian raccoon dog population

Sexual dimorphism in the whole brain and brainstem morphometry in the African giant pouched rat (Cricetomys gambianus, Waterhouse 1840)