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1
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The ultrastructure and cytochemistry of Mehlis' gland and egg-shell formation in Schistosoma haematobium

100%
Swiderski Z., Moczon T., Eklu-Natey D. T.
Wiadomości Parazytologiczne
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1998
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tom 44
|
nr 3
2
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Schistosoma japonicum: the chemical nature of the secretion produced by the Mehlis' gland

100%
Moczon T., Swiderski Z.
Wiadomości Parazytologiczne
|
1998
|
tom 44
|
nr 3
3

Schistosoma haematobium: cytochemistry of the Mehlis' gland and of the ootype wall

100%
Moczon T., Swiderski Z.
Acta Parasitologica
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2002
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tom 47
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nr 4
Secretory granules produced by the Mehlis' gland and by the wall of the distal ootype in Schistosoma haematobium females, were examined at the ultrastructural level by means of several cytochemical methods. Strong staining, due to a relatively high percentage of carbohydrates in the granules, was observed in polymethacrylate sections treated with a phosphotungstic acidhydrochloric acid mixture at pH ≈ 0.5. Staining with ferric chloride-mixed-diamine mixtures (the LID and the HID reaction) showed no detectable level of oligosaccharide carboxyl and sulphate groups. A periodic acid-thiocarbohydrazide-silver proteinate reaction which was performed on epoxy sections, revealed a relatively high level of glycopyranosidic 1,2-diol groups in the granules. These results as well as the sensitivity of the secretory granules to the proteolytic action of papain indicated that the secretions produced by the Mehlis' gland and by the ootype wall were neutral glycoproteins.
4
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The fine structure of uterin, prostate and Mehlis' glands of Caryophyllidea and Cyathocephalata

84%
Poddubnaya L. G.
Wiadomości Parazytologiczne
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1998
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tom 44
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nr 3
5

Fine structure of egg-forming complex ducts, eggshell formation and supporting neuronal plexus in progenetic Diplocotyle olrikii [Cestoda, Spathebothriidea]

84%
Poddubnaya L. G., Mackiewicz J. S., Swiderski Z., Brunanska M., Scholz T.
Acta Parasitologica
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2005
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tom 50
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nr 4
Ultrastructural descriptions of the oviduct, fertilization canal, seminal receptacle, ovovitelline duct, vitelline reservoir, ootype, Mehlis' gland, proximal uterus, and neurosecretory elements associated with egg-forming ducts are given for the progenetic spathebothriidean tapeworm, Diplocotyle olrikii from the body cavity of Gammarus oceanicus. The functional significance of cortical granules of the oocyte, as necessary elements for joining vitelline material to an oocyte in the ovovitelline duct, is established. The proximal ootype has a vesicular epithelium and is the site of initial, nascent eggshell formation. Precursors of nascent eggshell are vesicles, synthesized in both the proximal ootype wall and vitelline cytoplasm that become associated with the newly formed shell. Major shell structure comes from subsequent deposition of shell globules from a disintegration of vitelline clusters. Mehlis' gland has a single secretory cell type. Secretory granules from Mehlis' gland become associated with the developing egg that passes through to the distal ootype and proximal uterus where egg-formation is completed. It is not known, however, whether Mehlis' gland secretion promotes breakdown of free vitelline cells, liberation of shell globules, confluence of shell globules on the developing eggshell or provides further structural components for the shell. Despite some differences in ootype morphology, the basic process of eggshell formation in D. olrikii may share much in common with the Pseudophyllidea and Caryophyllidea. Small vesicles and dense-core vesicles are in nerve terminals near duct musculature. Nerve terminals with large dense vesicles are described near, in, and within the seminal receptacle, fertilization canal and distal ootype. The possible physiological effects of exocrine neurosecretions are discussed.
6

Disruption of egg production by triclabendazole-resistant Fasciola hepatica following treatment with a commercial preparation of myrrh (Mirazid)

67%
Abdelaal M. M. O., Brennan G. P., Hanna R. E. B., Abdel-Aziz A., Fairweather I.
Acta Parasitologica
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2017
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tom 62
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nr 2
7

Schistosoma japonicum: Cytochemistry of the Mehlis' gland and of the ootype wall

67%
Moczon T., Swiderski Z.
Acta Parasitologica
|
2000
|
tom 45
|
nr 1
Secretory granules produced by the Mehlis’ gland and by the wall of the distal ootype in Schistosoma japonicum females were periodate reactive, stained intensely with a phosphotungstic acid-HCl mixture at pH  0.9, and showed no presence of sulphydryl, carboxyl and sulphate groups. These results as well as the sensitivity ol the granules to the proteolytic action of papain indicated that the secretions produced by the Mehlis’ gland and by the ootype wall were neutral glycoproteins.
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