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Biomedical subjects

K Odening

Publications and source records attributed to K Odening.

At least 37 records · Page 2Linked to original sources
PubMed1983

[What is Paramphistomum cervi?].

It is proved histologically that lacking of tegumented papillae in Paramphistomum cervi is based on the alteration of the tegument furnished with papillae in the normal state. The differences in the dorsal extension of the vitellaria, in the histological structure of the genital opening complex and in other features, used by Eduardo (1982) for the division of P. cervi into 3 species, are refuted as not existing. Therefore the forms P. leydeni, P. scotiae and P. hiberniae remain well established synonyms of P. cervi.

Animals↗
PubMed1983

[Strobila periodicity of Spirometra (Cestoda: Diphyllobothriidae)].

The non-induced, endogeneous periodic destrobilation in Spirometra is conceived as an extreme of pseudapolysis. The patent time of S. erinaceieuropaei and S. sp. with single or with simultaneous infestations is arranged in separate patent periods marked off from each other by negative phases. This phenomenon is due to a periodicity of the strobila. In dissections during the negative phase only the scolex and neck alone or provided with a very short strobila could be found in the intestine. There were no striking differences between single and simultaneous infestations. The periodicity altogether, however, showed a great variability. A synchronization of the periodicity of egg shedding and destrobilation is concluded from one simultaneous infestation with demonstrably at least 2 tapeworms. After successive superinvasion, however, the periodicity evidently does not become synchronous, the periodicity of egg shedding is masked.

Animals↗
PubMed1982

[Two European Spirometra forms (Cestoidea: Diphyllobothriidae) with different Sparganum growth factors].

European Spirometra forms corresponding to S. erinaceieuropaei in morphology, host specificity and periodical destrobilation were tested for a Sparganum Growth Factor (SGF "mansonoides") acting upon hypophysectomized male rats. A Polish form as well as Thai and Burmese forms did not show a SGF "mansonoides". The Polish form partially caused increased growth in normal laboratory mice (similar to a form from Thailand) and in Cricetulus griseus (SGF "non-mansonoides", restricted by host resistance). Procyon lotor can act both as paratenic and as definitive host for the Polish form. The Polish, Thai and Burmese forms are attributed to S. erinaceieuropaei. A Bulgarian form showed a typical SGF "mansonoides". 4 hyposectomized 100 g rats, each of which were implanted 5 spargana subcutaneously, showed weight gains up to 400 g within 7 to 8 weeks. Therefore, this Bulgarian form is treated provisionally as Spirometra sp.

Animals↗
PubMed1982

[Paramonostomum antarcticum (Trematoda, Notocotylidae) in Larus dominicanus from South Shetlands (Antarctica)].

Paramonostomum antarcticum Graefe, 1968 from the rectum of blackbacked gull from King George as Island (South Shetlands, Antarctica) is described. As a result of that Larus dominicanus is presented the new host of this trematode. The morphology is compared with the original description of P. signiense Jones & Williams, 1969. The relations between the two possibly identical Antarctic species are discussed. It is proposed to invalidate the subgenus Paramonostomoides Yamaguti, 1971.

Animals↗
PubMed1979

[Development of parasitology in the GDR].

The development of parasitology in the GDR is described. In the GDR there are only 2 chairs of Parasitology in the Faculties of Animal Production and Veterinary Medicine at Humboldt University Berlin and Karl Marx University Leipzig. Parasitology as a teaching field in its own was not become realized in medicine. In the training of zoology parasitology had been recognized only temporarily. For the parasitological practice particular parasitological departments or laboratories developed in each district institute, which are leaded and coordinated by reference laboratories--a state that is an important improvement compared with the situation before the war. The publishing efforts of GDR's authors and publishing houses as well as the mobilizing role of the Parasitological Society of the GDR are especially stressed.

Germany, East↗
PubMed1979

On the problem of variable numbers of hosts in the life-cycles of helminths.

The authors analyze the phenomena underlying the variation of host numbers in the life-cycle of several helminth species. Variation of host number in the cycle is effected by alternative shortening of the cycle (with this the cycle turns out either without or with a polyvalent obligatory host or, in rarer cases, without or with appearing of neogeny) or by facultative widening of the cycle (without or with participation of additional hosts, namely para-paratenic, paradefinitive, metaparatenic, or euparatenic hosts). The term of metaparatenic host is made precise by limitation to a "hemistadiogenous" additional host (sensu Barus and Rysavý 1977).

Animals↗
PubMed1979

[State of Spirometra "sparganum growth factor" research].

The plerocercoids of all Spirometra forms investigated up to now in this regard produce a "Sparganum Growth Factor" (SGF), i.e. one (or more) substance(s) with growth hormone-like effect on certain rodents. The SGF produced by the species S. mansonoides (SGF "mansonoides") is stronger effect than the SGF produced by all the other forms (SGF "non-mansonoides"). The physiological in its effects hitherto investigated mainly with SGT "mansonoides" in the USA are shortly mentioned. In order to get further insights the isolation, purification, and characterization of the SGF are necessary. The both kinds of SGF are also of taxonomic importance.

Animals↗
PubMed1978

[List of trematodes of the GDR].

Short systematic-ecographical documentation of the trematode species hitherto found in the territory of the German Democratic Republic and the adjacent region of the Baltic Sea as a systematic list (alphabetically arranged after classes, orders, families, genera and species). Information on the synonyms important for the territory treated, on the cycle (limnical, marine, terrestrial; host categories, host groups), on the host species recorded for the territory, on the district of findings, on the literature referring to the findings, and on the wrong determinations so far recognized. There are 269 recorded species (177 with or presumably with a limnical, 59 with a marine, and 25 with a terrestrial cycle within the territory).

Animals↗