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Cerebellovestibular projection from the posterior lobe cortex in the rabbit; an experimental study with the retrograde HRP method.I.Topographical relationships

100%
Bukowska D.
Acta Neurobiologiae Experimentalis
|
1995
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vol. 55
|
issue 1
23-34
EN
The sources of corticovestibular projections from the cerebellar posterior lobe vermis and hemisphere in the rabbit were investigated by the retrograde horseradish peroxidase (HRP) tracing method. Following ionophoretic injections into various subdivisions of the vestibular nuclear complex (VNC), labelled Purkinje neurones were identified ipsolaterally in all vermal lobules (VI through IX) and some regions of the hemisphere.The results indicate that projection is profuse and directed to all four nuclei of VNC.The labelling suggests some topographical relationships between lobules and especially sublobules of the posterior lobe and individual nuclei of VNC.The major projection derives from lobule VIII whereas that from lobule VII is small.Projection from the hamisphere arise mainly from crus I and crus II of the ansiform lobule.Those from the copula pyramids, lobule HV and the ventral paraflocullus are sparse.In the present study a topographical relationships were more precisely established than before because the technique revealed VNC afferents from iondividual sublobules of the cerebellar posterior lobe cortex.
2
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Cerebellovestibular projection from the posterior lobe cortex in the rabbit; an experimental study with the retrograde HRP method.II.Zonal organization

100%
Bukowska D.
Acta Neurobiologiae Experimentalis
|
1995
|
vol. 55
|
issue 1
35-47
EN
The mediolateral distribution of neurones of origin of the corticovestibular projections from the cerebellar posterior lobe in the rabbit was studied with the retrograde horseradish peroxidase (HRP) tracing method. After ionophoretic injections confined to various subdivisions of the vestibular nuclear complex (VNC), labelled Purkinje neurones were found ipsolaterally in widespreadmediolateral cortical regions of vermal lobules from VI to IX, as well as in crus I and crus II of the ansiform lobule, the copula pyramids, lobule HV and the ventral paraflocullus.However, when projections from individual sublobules were examined, a clesrly visible zonal pattern was found.Thus, Purkinje neurones projecting to VNC were arranged in longitudinal bands with madial and lateral boundaries quite well demarcated.these bands had a different distances from the midline.The present findings constitute the first indication of a zonal organization of corticovestibular projections from individual sublobules of the cerebellar postrior lobe in the rabbit.This zonal arragement of VNC afferents is discussed with the spacial emphasis on the cerebellar longitudinal zones related to previous studies on other species.
3
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Pontocerebellar projection to the rabbit paramedian lobule by means of axonal collaterals: evidence for intralobular connections

51%
Bukowska D., Zguczynski L., Mierzejewska-Krzyzowska B.
Acta Neurobiologiae Experimentalis
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2003
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vol. 63
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issue 4
295-308
EN
In this study, we utilized a double retrograde axonal tracing technique to investigate the possible existence of collateralized axonal projections from the pontine nuclei (PN) to the rostral (rPML) and caudal (cPML) parts of cerebellar paramedian lobule in the rabbit, known to be the forelimb and hindlimb regions, respectively. Following injections of fluorescent tracers Fast Blue (FB) and Diamidino Yellow (DY) within rPML and cPML, respectively, substantial numbers of FB and DY single labeled neurons were found in the dorsolateral, paramedian, lateral and peduncular pontine nuclei bilaterally with a very clearcut contralateral preponderance. No labeling was observed in the ventral pontine nucleus. Extensive areas of overlap of FB or DY labeled neurons indicated that no somatotopical relationship existed in projection from PN to the two functionally different PML target regions. In addition, a small number of double FB + DY labeled neurons was detected in the common areas of FB and DY single labeling in PN. These neurons give rise to pontocerebellar projections to rPML and cPML simultaneously by way of axonal collaterals and thus they may play a role in the coordination of unilateral forelimb and hindlimb movements.
4
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Topography and axonal collaterals of trigeminocerebellar projection to the paramedian lobule and uvula in the rabbit cerebellum

51%
Bukowska D., Mierzejewska-Krzyzowska B., Zguczynski L.
Acta Neurobiologiae Experimentalis
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2006
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vol. 66
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issue 2
145-151
EN
To study projections of the trigeminal sensory nuclei (TSN) to the rostral parts of the paramedian lobule (PML) and of the uvula of the rabbit cerebellar cortex, the retrograde double fluorescent labeling method was used. Injections of Fast Blue (FB) into PML and Diamidino Yellow (DY) into the uvula, resulted in prominent labeling neurons with FB bilaterally and with DY ipsilaterally, in the principal trigeminal nucleus, subnucleus oralis, and rostral and caudal subnucleus interpolaris. We observed topographical arrangement of neurons in such a fashion that FB labeled cells were localized in the medial and DY labeled cells in the lateral regions of TSN. Apart from this small number of double FB+DY labeled neurons (n=138) were found in the narrow common region of single labeling. This implies that PML and the uvula receive independent trigeminal sensory information from neurons in separate regions of TSN. However, some trigeminal neurons may also exert simultaneous influences upon these hemispheral and vermal components by way of axonal branchings.
5
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The in vitro culture supplements and selected aspects of canine oocytes maturation

39%
Zawierucha P., Bukowska D., Kempisty B., Piotrowska H., Brussow K., Jaśkowski J., Nowicki M.
Polish Journal of Veterinary Sciences
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2012
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issue 1
6
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Differential expression of epidermal growth factor and transforming growth factor beta isoforms in dog endometrium during different periods of the estrus cycle

39%
Bukowska D., Kempisty B., Jackowska M., Woźna M., Antosik P., Piotrowska H., Jaśkowski J.
Polish Journal of Veterinary Sciences
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2011
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issue 2
7
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Analysis of integrins and vascular endothelial growth factor isoforms mRNA expression in the canine uterus during perimplantation period

39%
Bukowska D., Kempisty B., Jackowska M., Woźna M., Antosik P., Piotrowska H., Jaśkowski J.
Polish Journal of Veterinary Sciences
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2011
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issue 2
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