Beiträge zum Vorkommen und zur Wirkung der weiblichen Sexualhormone

Schwerdtfeger, H.

doi:10.1007/bf01862602

Cited by 17 publications

(2 citation statements)

References 3 publications

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“…Also in other phyla of invertebrates, material with estrogen-like activity was reported by several authors with similar methods. Preparations with estrogen-like activity were obtained from Coelenterata (Schwerdtfeger, 1932), Annelida (Steidle, 1930), Arthropoda (Steidle, 1930;Donahue, 1940Donahue, , 1948Hagerman et al, 1957;Lisk, 1961;Gottfried et al, 1967). De Longcamp et al (1974), using RIA, found indications for the presence of estrogens in the gonad of Mytilus edulis.…”

Section: Progesterone and Estrone Levelsmentioning

confidence: 99%

Radioimmunoassays to determine the presence of progesterone and estrone in the starfish Asterias rubens

Dieleman

Schoenmakers

1979

General and Comparative Endocrinology

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RIA's have been made for progesterone and estrone with the antisera S74B7 and 7604-7 40, respectively, which will be described. The characteristics of the RIA for progesterone resemble those of other reported RIA's. The antiserum for the RIA of estrone is highly specific, with main cross-reactions of 0.32%. 0.27% and 0.13% for estradiol-17P, estradioLl7a and oestriol, respectively. The RIA for estrone is sensitive (affinity constant: 28.2 x 10" l/mol), with a standard curve in the range from 1 to 10 pg. Accuracy and precision were reliable, as proved by the significant correlation between steroid added and steroid estimated.With the use of these RIA's. progesterone and estrone were demonstrated in the ovaries and pyloric ceca of single specimens of Asterias rubens. Progesterone was also present in the perivisceral fluid, but estrone appeared to be absent. The progesterone level was lower and the estrone level higher in the ovaries than in the pyloric ceca.The significance of the presence of these steroids in the ovaries and pyloric ceca of Asrerias rubens,

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Section: Progesterone and Estrone Levelsmentioning

confidence: 99%

Radioimmunoassays to determine the presence of progesterone and estrone in the starfish Asterias rubens

Dieleman

Schoenmakers

1979

General and Comparative Endocrinology

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“…Steidle (1930), using a mouse bioassay, found traces of estrogens in a sea urchin, Echinus iniliaris, three molluscs, Aplysia, Octopus and Eledone, as well as in certain worms and arthropods. Similarly Schwerdtfeger (1932) found estrogens in a sea anemone, Actinia aquina, but none in the mollusc Chiton marginatus. Donahue (1940) reported small amounts of estrogenically active material to be present in extracts of the Bermuda urchin, Lyt echinus varicgatus, the reef urchin, Echinometria, a holothurian, Stichopns mobii, and a lobster, Palinurus argus.…”

mentioning

confidence: 94%

Estrogens in Marine Invertebrates

Hagerman¹,

Wellington²,

Villee³

1957

The Biological Bulletin

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Material with estrogenic activity demonstrable by bioassay in rodents has been found in marine invertebrate tissues. Steidle (1930), using a mouse bioassay, found traces of estrogens in a sea urchin, Echinus iniliaris, three molluscs, Aplysia, Octopus and Eledone, as well as in certain worms and arthropods. Similarly Schwerdtfeger (1932) found estrogens in a sea anemone, Actinia aquina, but none in the mollusc Chiton marginatus. Donahue (1940) reported small amounts of estrogenically active material to be present in extracts of the Bermuda urchin, Lyt echinus varicgatus, the reef urchin, Echinometria, a holothurian, Stichopns mobii, and a lobster, Palinurus argus. More recently, this same author (Donahue, 1948) made extracts of the shed eggs of another lobster, Homarus americanus, purified them by solvent partition, and made estrogen analyses by a fluorometric method. In this way he found 100 international units of estrogen per 100 gm. eggs.Gordon and Villee ( 1956) have described an enzymatic assay for estrogens, w r hich is as sensitive as the fluorometric methods now available. Their assay depends upon the fact that human placenta contains a DPN(diphosphopyridine nucleotide) -linked isocitric dehydrogenase which catalyzes the reaction. isocitrate + DPN ^ a-ketoglutarate + DPNH + CO 2 and which is specifically activated by certain natural estrogens. In a limited range

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Intersexuality in chironomidae induced by nematode parasitism

Rempel

1940

J. Exp. Zool.

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Beiträge zum Vorkommen und zur Wirkung der weiblichen Sexualhormone

Cited by 17 publications

References 3 publications

Radioimmunoassays to determine the presence of progesterone and estrone in the starfish Asterias rubens

Radioimmunoassays to determine the presence of progesterone and estrone in the starfish Asterias rubens

Estrogens in Marine Invertebrates

Intersexuality in chironomidae induced by nematode parasitism

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