Wyniki wyszukiwania

1

Digital-image analysis of the rhomboid fossa surface

100%

Bogucki J., Gielecki J., Czernicki Z.

Folia Morphologica

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1997

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tom 56

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nr 3

2

An evaluation of the size of the fourth ventricle in human foetuses

86%

Blaszczyk E.

Folia Morphologica

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2004

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tom 63

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nr 2

The aim of the study was metric analysis of the fourth ventricle in human foetuses. The study was performed on 117 foetuses aged 4–7 months. The area and four dimensions of the fourth ventricle were obtained and the results analysed statistically. The features of the fourth ventricle studied correlate with foetal age to different degrees. The correlation coefficient is greatest for the upper part of the roof.

3

False tendons in the left ventricle of the heart in humans during pre- and pastnatal periods

86%

Grzybiak M., Lotkowski D., Kozlowski D.

Folia Morphologica

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1996

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tom 55

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nr 2

4

Surgical observartion of the agenesis of the foramen of Magendie

72%

Tubbs R. S.

Folia Morphologica

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2006

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tom 65

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nr 2

174-177

We report a young girl who presented with headache and back pain. Dynamic MRI revealed no cerebrospinal egress from the median aperture (Foramen of Magendie) of the fourth ventricle and syringomyelia. A posterior cranial fossa exploration was performed and agenesis of the median aperture was observed. Following surgical penetration of the posterior aspect of the fourth ventricle and at the most recent follow-up examination, this patient’s syringomyelia had resolved, as had her symptoms. Agenesis of the foramen of Magendie may be a rare cause of inhibition of normal cerebrospinal egress from the fourth ventricle with resultant syringomyelia.

5

Distribution of costameric proteins in normal human ventricular and atrial cardiac muscle

58%

Di Mauro D., Gaeta R., Arco A., Milardi D., Lentini S., Runci M., Rizzo G., Magaudda L.

Folia Histochemica et Cytobiologica

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2009

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tom 47

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nr 4

6

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Thyroid hormones in the cerebrospinal fluid of the third ventricle of adult female sheep during different periods of reproductive activity

58%

Skipor J., Misztal T., Szczepkowska A.

Polish Journal of Veterinary Sciences

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2010

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tom 13

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nr 4

Thyroid hormones (THs) are obligatory for transition from breeding season to anestrus in sheep. In this process, THs act during a very limited time of the year and primarily within the brain. In ewes chronically equipped for sampling cerebrospinal fluid (CSF) from the third ventricle, we have characterized the concentrations of total and free thyroxine (T4), triiodothyronine (T3), and total reverse T3 (rT3) in the CSF during breeding season, anestrus and during a critical period required for transition to anestrus (December-March). The total T4, T3, rT3 and free T3 average concentrations (± SEM) in CSF were 1.5 ± 0.07 ng/ml, 14.5 ± 1.2 pg/ml, 43 ± 7.4 pg/ml, and 0.6 ± 0.05 pg/ml, respectively, and all were significantly lower (p < 0.001) than in blood plasma except free T4 (12.6 ± 1.1 pg/ml), which was similar to that in plasma. There was a seasonal trend (p < 0.05) in the concentration of total T3 (highest in December) and free T4 (highest in November) in the CSF that does not follow that in blood plasma. During the period of transition to anestrus the CSF total T3/TT4 molar ratio and free T3/ T4 ratio were significantly lower (p < 0.05 and p < 0.01, respectively) than in blood plasma, while the total rT3/T4 ratio was significantly higher (p < 0.01) at the end of this period (March). Additionally, the CSF total rT3 concentrations were also significantly correlated with the CSF total T4 levels (r = 0.57; p < 0.05). In conclusion, the CSF in sheep may serve as a considerable source of thyroid hormones for neuroendocrine events. The lack of significant changes in THs concentrations in the CSF during the period of transition to anestrus indicate that neither seasonal changes of THs circulating in the blood plasma nor THs circulating in the CSF actively drive the transition to anestrus.

7

Regional heterogeneity of myocardial blood flow within the rabbit left ventricle during haemorrhagic hypotension

58%

Standa M., Iversen P. O., Flatebo T., Nicolaysen G.

Journal of Physiology and Pharmacology

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1992

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tom 43

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nr 3

Several studies have reported an extensive regional heterogeneity in myocardial blood flow. The reported coefficients of variation for regional myocardial perfusion range from about 0.2 to 0.4 in normotensive animals. The spatial distribution of myocardial perfusion during haemorrhagic hypotension seems not to have been assessed. The goal of the present study was to determine the regional heterogeneity in myocardial blood flow within the rabbit left ventricle during normal conditions and after haemorrhagic hypotension. Radioactive microspheres were infused into the left ventricle in barbiturate anaethetized rabbits over either 30 or 120 sec. The haemorrhagic hypotension was induced by bleeding, so that mean arterial blood pressure was reduced to about 50% of control. The left ventricles were divided into samples of about 0.025 g each. Regional heterogeneity in the blood flow was expressed as the coefficient of variation corrected for the Poisspn distribution of microspheres (CVc). The CVc was 0.37 ±0.09 (mean±SD) during control and 0.41+0.11 after bleeding, the CVc obtained after bleeding being somewhat higher than during control (P<0.05). We obtained a high correlation coefficient (τ about 0.68) between regional perfusion values at control and after bleeding which indicates a stable perfusion pattern within the myocardium. We conclude that the regional distribution of coronary blood flow within the left ventricle is markedly heterogenous during control condition and that this pattern is not changed during haemorrhagic hypotension.

8

Correlation of myofibrillar ATPase activity and myosin heavy chain content in ventricular and atrial myocardium of fish heart

58%

Karasinski J., Sokalski A., Kilarski W.

Folia Histochemica et Cytobiologica

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2001

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tom 39

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nr 1

Ograniczanie wyników

Digital-image analysis of the rhomboid fossa surface

An evaluation of the size of the fourth ventricle in human foetuses

False tendons in the left ventricle of the heart in humans during pre- and pastnatal periods

Surgical observartion of the agenesis of the foramen of Magendie

Distribution of costameric proteins in normal human ventricular and atrial cardiac muscle

Thyroid hormones in the cerebrospinal fluid of the third ventricle of adult female sheep during different periods of reproductive activity

Regional heterogeneity of myocardial blood flow within the rabbit left ventricle during haemorrhagic hypotension

Correlation of myofibrillar ATPase activity and myosin heavy chain content in ventricular and atrial myocardium of fish heart