Wyniki wyszukiwania

1

Comparison of cerebrocortical microvascular effects of different hypoxic-ischemic insults in piglets: a LASER-speckle imaging study

100%

Domoki F., Zolei-Szenasi D., Olah O., Toth-Szuki V., Nemeth J., Hopp B., Bari F., Smausz T.

Journal of Physiology and Pharmacology

|

2014

|

tom 65

|

nr 4

2

A rare variation of the inferior alveolar artery with potential clinical consequences

100%

Khaki A. A., Tubbs R. S., Shoja M. M., Shokouhi G., Farahani R. M.

Folia Morphologica

|

2005

|

tom 64

|

nr 4

345-346

Variations of the inferior alveolar artery are seemingly quite rare, especially with regard to its origin from the maxillary artery. We present an unusual case of an inferior alveolar artery that originated from the external carotid artery. To the best of our knowledge, our case is one of only two reports of the inferior alveolar artery arising from the external carotid artery. The clinician who deals with the mandibular region should be aware of such a variation in the arterial architecture.

3

The caroticobasilar artery in species of order Perissodactyla

100%

Frackowiak H., Giejdasz K., Godynicki S.

Folia Morphologica

|

1997

|

tom 56

|

nr 4

4

Ultrastructural alterations of endothelium covering advanced atherosclerotic plaque in human carotid artery visualised by scanning electron microscope

100%

Walski M., Chlopicki S., Celary-Walska R., Frontczak-Baniewicz M.

Journal of Physiology and Pharmacology

|

2002

|

tom 53

|

nr 4,1

Human atherosclerotic plaque morphology at its various stages was extensively documented using light microscopy. However, much less is known of the ultrastructure of the human atherosclerotic plaque, in particular of ultrastructure of endothelial cells in atherosclerosis. Here, we analysed alterations of endothelial cells covering advanced atherosclerotic plaque in carotid artery using scanning electron microscope. Examination was performed on specimens from atherosclerotic lesions of the interior carotid artery, collected from 8 patients who had undergone endarterectomy. We found wide spectrum of pathological alterations of the luminal surface of atherosclerotic plaque. In dominant part of the vessel, endothelial layer was preserved but displayed pronounced irregularities in endothelial architecture including appearance of cuboidal cells. Some endothelial cells were covered by numerous microvilli and/or contained "craters" disrupting continuous surface of the endothelium. Platelets and leukocytes adhering to endothelium were frequently observed. There were also areas of the vessel lumen with endothelial denudation, in which the subendothelial surface containing fibrin proteins and collagen fibrils were visible. Interestingly, signs of proliferation of endothelial cells tending to cover the partially denuded vessel were observed. In summary, in scanning electron microscope, preserved endothelial cells of advanced atherosclerotic plaque displayed pronounced pathology; whether any of these changes represent the ultrastructural correlate of endothelial dysfunction remains to be established.

5

Characteristic of the arteries extending from the ascending aorta in broiler chicken (Gallus gallus domesticus)

84%

Kirkillo-Stacewicz K., Brudnicki W., Macherzynska A., Nowicki W., Skoczylas B., Wach J.

Electronic Journal of Polish Agricultural Universities. Series Veterinary Medicine

|

2014

|

tom 17

|

nr 3

6

Transverse subisthmic course of the innominate artery in an adult: detailed anatomy and additional variation

84%

Rusu M. C., Boscu A. L.

Folia Morphologica

|

2010

|

tom 69

|

nr 4

A rare morphology of an aberrant innominate artery (IA) is reported here, together with additional arterial variation encountered in the respective specimen. The IA originated in the aortic arch on the left side of the trachea, coursed on that side of the trachea to reach the left thyroid lobe, turned in at a right angle to pass anterior to the trachea and immediately inferior and parallel to the thyroid isthmus, and finally it divided inferior to the right thyroid lobe into the right subclavian and common carotid arteries. The right common carotid artery immediately turned at a right angle to ascend in the neck. Thus the terminal branches of the IA had origins in a higher position than is usually expected. This aberrant course of the IA determined a step-like morphology in the sagittal plane of the left common carotid artery. Additional variations were also encountered: (a) a lateralised right external carotid artery with the superior thyroid artery initially coursing over the internal carotid artery; (b) the right vertebral artery coursing over the inferior thyroid artery and entering the transverse process of the fifth cervical vertebra; (c) the left subclavian and vertebral arteries were tortuous. Knowledge of the presence of this IA variant, with a transverse subisthmic segment, appears to be important in various surgical approaches, such as tracheostomies, thyroidectomies, and mediastinoscopies; in addition, the variations of the IA and the vertebral arteries are relevant for lower cervical spine approaches. Nevertheless, the lateralised external carotid artery may lead, if unidentified, to hemorrhagic complications during carotid space approaches. It is important for surgeons to be aware that if an aberrant IA is identified it may not be the only variation in that patient. (Folia Morphol 2010; 69, 4: 261–266)

7

An evaluation of the reproducibility of the measurement of the intima-media thickness of carotid arteries

84%

Kazmierski R., Niezgoda A., Guzik P., Lukasik M., Ambrosius W., Kozubski W.

Folia Morphologica

|

2003

|

tom 62

|

nr 1

The intima-media thickness (IMT) of carotid arteries was demonstrated to be a reliable measure for early stages of atherosclerosis. B-mode ultrasound may be used to measure carotid IMT. The measurements of the IMT of the carotid artery (CA) conducted by different investigators can be comparable and enable the implementation of clinical trial successfully while maintaining a high reproducibility value. The objective of the study was to evaluate the reproducibility of the measurements made by the same investigator on two separate occasions (intraobserver variability) and the reproducibility of the off-line measurements between four sonographers in our laboratory (interobserver variability). The IMT of CA in 25 subjects (15 post stroke and 10 healthy persons) was investigated with the use of high-resolution ultrasonography. The CA subdivided into the common, bulbs and internal segments were scanned twice with a 3-week interval. Additionally three other readers with different levels of experience and skills in ultrasonography were asked to perform the same measurements in duplicate with at least a 3-week interval between. A high concurrence for intraobserver variability was detected with a correlation coefficient ranging from 0.92 to 0.95; p < 0.0001, and maximal bias 0.019 mm. Interobserver variability for all four readers also demonstrated a high correlation coefficient ranging from 0.72 to 0.83; p < 0.0001, and the maximal bias of measurements did not exceed 0.08 mm. The analogue measurements performed by the team demonstrate a reliable reproducibility in terms of the results of morphologic measurements. The differences obtained in the study were less than the error of the method (i.e. 0.1 mm) and should not influence clinical decision-making. Additionally, this study demonstrated that interobserver concurrence increases with the increasing experience of the investigators.

8

Cephalic arteries in the European beaver Castor fiber

84%

Frackowiak H., Smielowski J.

Acta Theriologica

|

1998

|

tom 43

|

nr 2

Cephalic arteries of 17 European beavers Castor fiber Linnaeus, 1758 were examined. After the common carotid arteries were injected with resin, the heads were biologically macerated. Differences between individual specimens as well as asymmetrical distribution of certain arteries were noted. It was found that in the European beaver the common carotid artery divided into external and internal carotid arteries. The internal carotid artery is well developed in C. fiber, whereas in some other rodents it may be obliterated. The examined beavers had no stapedial arteries.

9

Rare cases of arteries branching directly from aortic arch in the man

84%

Czerwinski F., Mierzwa A., Krzanowski K., Michalska G.

Folia Morphologica

|

1993

|

tom 52

|

nr 4

10

Blood pressure-independent hypotrophy of the heart, kidneys and conduit arteries after 7-nitroindazole administration to Wistar rats from the prenatal period to adulthood

67%

Kristek F., Malekova M., Ondrias K., Cacanyiova S.

Journal of Physiology and Pharmacology

|

2013

|

tom 64

|

nr 1

11

The neuroprotective effect of 2-oxoglutarate in the experimental ischemia of hippocampus

67%

Kovalenko T. N., Ushakova G. A., Osadchenko I., Skibo G. G., Pierzynowski S. G.

Journal of Physiology and Pharmacology

|

2011

|

tom 62

|

nr 2

In this study we investigated the potential neuroprotective effect of 2-oxoglutarate (2-OG) on the hippocampus in the transient vessel occlusion ischemia model in the Mongolian gerbil. The morphological and biochemical studies were performed at 7 days after occlusion of carotid arteries. The acute reduction of NeuN-positive neurons in the CA1 pyramidal layer of the hippocampus was accompanied by increased staining intensity for GFAP-positive astrocytes, indicative of glial reaction. The neuron death in the CA1 area coincided with a strong 2.4 fold decrease in the membrane forms of neuronal cell adhesion molecules and elevated levels of astrocyte-specific proteins (soluble GFAP to 2,6 times; filament GFAP to 1,5 times; calcium-binding protein S-100b to 1,6 times). Treatment with 2-oxoglutarate (2.28 g/l drinking water) for between 7 and 21 days attenuated the neuronal death and reactive astrogliosis in this model of experimental ischemia by 20-50%. Our results suggest that 2-OG may prevent the disturbances of neural cells that usually take place during ischemic pathology.

12

Hypotensive, vasorelaxant and cardiodepressant activities of the ethanol extract of Sideritis raeseri spp. raeseri Boiss and Heldr

67%

Kitic D., Brankovic S., Radenkovic M., Savikin K., Zdunic G., Kocic B., Velickovic Radovanovic R.

Journal of Physiology and Pharmacology

|

2012

|

tom 63

|

nr 5

13

Long-term effects of early administered sildenafil and NO donor on the cardiovascular system of SHR

67%

Kristek F., Koprdova R., Cebova M.

Journal of Physiology and Pharmacology

|

2007

|

tom 58

|

nr 1

We evaluated the long-term effect of NO-donor, pentaerythrityl tetranitrate (Petn), and sildenafil citrate (sildenafil) on the cardiovascular system of the spontaneously hypertensive rat (SHR). Petn (100 mg/kg/day) and sildenafil (10 mg/kg/day) were administered to SHR individually or together from week 4 (pre-hypertensive period) to week 9 of age. Blood pressure (BP) was measured using a plethysmographic method. The animals were perfused with a glutaraldehyde fixative (120 mmHg). Carotid (AC) and coronary artery (RS) were processed according to electron microscopy procedure. Geometry of the arteries was measured on semi-thin sections using light microscopy. Administration of Petn and sildenafil to SHR individually or together did not prevent an increase of BP, but evoked a decrease of cardiac hypertrophy. Petn and sildenafil affected the geometry of RS and AC differently. In the RS, an increase of inner diameter (ID) without an increase of wall thickness (WT) resulted in increased WT/ID and circumferential stress. In the AC, changes in ID were accompanied by changes in WT and, thereby, WT/ID and circumferential stress remained unchanged. The arterial wall mass of both arteries was increased. The data suggest that administration of the NO donor, Petn, and/or sildenafil does not result in a beneficial effect on the myocardium or on the geometry of the carotid and coronary arteries.

14

Spermine protects in vivo the antioxidant enzymes in transiently hypoperfused rat brain

67%

Farbiszewski R., Bielawski K., Bielawska A., Sobaniec W.

Acta Neurobiologiae Experimentalis

|

1995

|

tom 55

|

nr 4

Ograniczanie wyników

Comparison of cerebrocortical microvascular effects of different hypoxic-ischemic insults in piglets: a LASER-speckle imaging study

A rare variation of the inferior alveolar artery with potential clinical consequences

The caroticobasilar artery in species of order Perissodactyla

Ultrastructural alterations of endothelium covering advanced atherosclerotic plaque in human carotid artery visualised by scanning electron microscope

Characteristic of the arteries extending from the ascending aorta in broiler chicken (Gallus gallus domesticus)

Transverse subisthmic course of the innominate artery in an adult: detailed anatomy and additional variation

An evaluation of the reproducibility of the measurement of the intima-media thickness of carotid arteries

Cephalic arteries in the European beaver Castor fiber

Rare cases of arteries branching directly from aortic arch in the man

Blood pressure-independent hypotrophy of the heart, kidneys and conduit arteries after 7-nitroindazole administration to Wistar rats from the prenatal period to adulthood

The neuroprotective effect of 2-oxoglutarate in the experimental ischemia of hippocampus

Hypotensive, vasorelaxant and cardiodepressant activities of the ethanol extract of Sideritis raeseri spp. raeseri Boiss and Heldr

Long-term effects of early administered sildenafil and NO donor on the cardiovascular system of SHR

Spermine protects in vivo the antioxidant enzymes in transiently hypoperfused rat brain