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1

Ewa Osetowska (1919-1978) - distinguished Polish neuropathology

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Klimkiewicz J., Kaliszek-Kiniorska A., Chabros-Borawska W.
Acta Neurobiologiae Experimentalis
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2009
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tom 69
|
nr 3
Professor Ewa Osetowska was one of the most distinguished Polish neuropathologists. She was born in 1919. In 1958 she underwent training in Bunge Institute, Antwerp, working under the supervision of Prof. Ludo van Bogaert. This experience together with the inspiration of her Polish mentor, Prof. Adam Opalski, proved decisive for her following scientifi c career. In 1963 she became the head of the Neuropathology Department of the Polish Academy of Sciences. She put her effort into organizing work in this new and completely unknown in Poland fi eld of science. She assembled a group of people interested in the fi eld of neuropathology and inspired them to the scientifi c work and to the organization of their own laboratories in different towns of the country. Professor E. Osetowska promoted 20 PhD’s and 5 postdoctoral degrees. Among her students we can fi nd many of later prominent scientists, such as: Professor Mirosław J. Mossakowski–President of the Polish Academy of Sciences, Professor Henryk Wiśniewski – Director of the Institute for Basic Research in New York, Professor Maria Dambska, a renowned specialist in the fi eld of the development of the nervous system. At the age of 49, after long and severe illness, Professor. Ewa Osetowska passes away, leaving behind a stunning scientifi c legacy – altogether over 150 scientifi c publications in which clinical and neuropathological diagnosis was always a starting point for further search of the pathogenesis of the diseases.
2

Vessels involved in the venous outflow from glandular mucosa of hamster stomach

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Moskalewski S., Biernacka-Wawrzonek D., Klimkiewicz J., Zdun R.
Folia Morphologica
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2002
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tom 61
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nr 2
81-87
Blood from the glandular part of hamster gastric mucosa is drained by collecting venules, running from the subepithelial layer towards lamina muscularis mucosae. To visualise vessels involved in the venous outflow, hamsters were exposed to atropine and subjected to intravital ligation of portal vein, causing strong hyperaemia. Distribution of vessels and their connections were studied a) in translucent, flat preparations of the glandular stomach, b) in thick sections of glandular mucosa cleared in the mineral oil, and c) in semi-thin plastic or paraffin sections. Collecting venules were drained by single vessels running parallel to the lamina muscularis mucosae (paramuscular venules), which, in turn, joined submucosal veins through openings in muscularis mucosae. Moreover, some collecting and paramuscular venules discharged into venules belonging to vascular triples composed of two venules and arteriole. The triplets were also parallel to muscularis mucosae. Triplets did not form connections with submucosal veins but passed on the abluminal surface of muscularis mucosae. Thus, some structural elements involved in venous outflow from glandular gastric mucosa differ from those in rats, in which vascular triplets were absent and all collecting venules drained into single paramuscular vessels. Contraction/relaxation of muscularis mucosae may regulate the amount of blood present in the venous system of the mucosa and the diameter of venules. Rhythmical changes of the latter could cause changes in intramucosal pressure, affecting movement of tissue fluid in the mucosa and thus the function of gastric cells.
3

Venous outflow system in rabbit gastric mucosa

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Moskalewski S., Biernacka-Wawrzonek D., Klimkiewicz J., Zdun R.
Folia Morphologica
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2004
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tom 63
|
nr 2
The purpose of this work was to compare the organisation of the gastric mucosal venous system in larger animals, exemplified by rabbits, with that of the rat and the hamster which we have described previously. Rabbits were given atropine and hexamethonium followed by intravital ligation of all veins draining the stomach, causing strong hyperaemia. The distribution of vessels was studied in the non-mounted mucosa, in mounts of mucosa cleared in light mineral oil and in paraffin or semi-thin plastic sections. We found that blood from rabbit gastric mucosa is drained by collecting venules, running from the subepithelial layer towards the muscularis mucosae. The collecting venules join the paramuscular vessels parallel and adjacent to the muscularis mucosae. Neighbouring venules form numerous arcade-like connections and gradually enlarge. Two venules and an arteriole form triplets initially situated at the luminal face of the muscularis mucosae and gradually passing onto its abluminal surface. In rats vascular triplets were absent and the collecting venules drained into paramuscular vessels joining submucosal veins. In hamsters both connections between paramuscular vessels and submucosal veins and the passing of vascular triplets across muscularis mucosae were observed. Contraction/relaxation of the muscularis mucosae may regulate the amount of blood in the venous system of the mucosa and change the intramucosal pressure, affecting movement of the tissue fluid and, indirectly, the function of the gastric cells.
4

Veins with saccular dilatations in gastric mucosa of the rat

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Moskalewski S., Biernacka-Wawrzonek D., Klimkiewicz J., Zdun R.
Folia Morphologica
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1999
|
tom 58
|
nr 3
It is well known that blood from the gastric mucosa of the rat is drained by collecting veins (venules). The aim of this study was to describe hitherto unrecognized saccular dilatations connected with these vessels. Rats received atropine or papaverine l h before ligation of the portal vein, Stomachs fixed in formaldehyde were prepared in toto after clearing in methyl salicylate or processed by standard histological technique. A single stomach contained about 1000 connecting veins localized exclusively in the oxyntic mucosa. After administration of relaxing agents and portal vein ligation the collecting veins were enlarged and in 80 percent of them one to three sacculi filled with blood could be seen. Histological observations shown that collecting veins empty into veins running between lamina muscularis and lamina propria mucosae. Sacculi were partially separated from the lumen of the collecting vein by a tissue band. In view of the relaxing effect evoked by atropine the veins and their sacculi appear to be under vagal control. Conceivably, their alternate expansion and collapse could facilitate movement of glandular content to the surface of the stomach and/or movement of interstitial fluid between cells.
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