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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
07/07/2017 |
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Data da última atualização: |
07/07/2017 |
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Autoria: |
CHUNG, W. L.; PARISH, E. J.; BONE, L. W. |
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Título: |
Sex steroid content and metabolism in Trichostrongylus colubriformis (Nematoda). |
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Ano de publicação: |
1986 |
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Fonte/Imprenta: |
The Journal of Parasitology, v. 72, n. 2, p. 326-329, Apr. 1986. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Testosterone, progesterone and cholesterol were found in mixed sexes of the nematode Trichostrongylus colubriformis from goats, according to thin-layer, gas-liquid and high-performance liquid chromatography. The structure of these steroids was confirmed by proton nuclear magnetic resonance and mass spectroscopy. Melting points of the worms' steroids were similar to authentic standards of the steroids. Estradiol was not detected in worms from either goat sex. Cholesterol was about 0.08% of the worms' dry weight in helminths from either sex of host. Testosterone was 0.02% of the dry weight when worms were taken from male goats, but only 0.005% from female goats. Progesterone was not detected in worms from male goats, but was 0.005% of the dry weight of helminths from female hosts. Incubation of a worm preparation with tritiated steroids showed that progesterone was converted to 17-alpha-hydroxyprogesterone, based on retention during radioactive thin-layer and gas-liquid chromatography, and co-crystallization. Testosterone, cholesterol and 17-beta-estradiol were not metabolized. |
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Palavras-Chave: |
Host parasite relations. |
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Thesaurus Nal: |
Cholesterol; Crystallization; Goats; Metabolism; Parasitism; Progesterone; Steroid hormones; Testosterone; Thin layer chromatography; Trichostrongylus colubriformis. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01883naa a2200277 a 4500
001 2072215
005 2017-07-07
008 1986 bl uuuu u00u1 u #d
100 1 $aCHUNG, W. L.
245 $aSex steroid content and metabolism in Trichostrongylus colubriformis (Nematoda).
260 $c1986
520 $aAbstract: Testosterone, progesterone and cholesterol were found in mixed sexes of the nematode Trichostrongylus colubriformis from goats, according to thin-layer, gas-liquid and high-performance liquid chromatography. The structure of these steroids was confirmed by proton nuclear magnetic resonance and mass spectroscopy. Melting points of the worms' steroids were similar to authentic standards of the steroids. Estradiol was not detected in worms from either goat sex. Cholesterol was about 0.08% of the worms' dry weight in helminths from either sex of host. Testosterone was 0.02% of the dry weight when worms were taken from male goats, but only 0.005% from female goats. Progesterone was not detected in worms from male goats, but was 0.005% of the dry weight of helminths from female hosts. Incubation of a worm preparation with tritiated steroids showed that progesterone was converted to 17-alpha-hydroxyprogesterone, based on retention during radioactive thin-layer and gas-liquid chromatography, and co-crystallization. Testosterone, cholesterol and 17-beta-estradiol were not metabolized.
650 $aCholesterol
650 $aCrystallization
650 $aGoats
650 $aMetabolism
650 $aParasitism
650 $aProgesterone
650 $aSteroid hormones
650 $aTestosterone
650 $aThin layer chromatography
650 $aTrichostrongylus colubriformis
653 $aHost parasite relations
700 1 $aPARISH, E. J.
700 1 $aBONE, L. W.
773 $tThe Journal of Parasitology$gv. 72, n. 2, p. 326-329, Apr. 1986.
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Embrapa Caprinos e Ovinos (CNPC) |
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| 1. |  | LIU, J.; DOU, Y.; BATISTELLA, M.; CHALLIES, E.; CONNOR, T.; FRIIS, C.; MILLINGTON, J. D. A.; PARISH, E.; ROMULO, C. L.; SILVA, R. F. B.; TRIEZENBERG, H.; YANG, H.; ZHAO, Z.; ZIMMERER, K. S.; HUETTMANN, F.; TREGLIA, M. L.; BASHER, Z.; CHUNG, M. G.; HERZBERGER, A.; LENSCHOW, A.; MECHICHE-ALAMI, A.; NEWIG, J.; ROCHE, J.; SUN, J. Spillover systems in a telecoupled Anthropocene: typology, methods, and governance for global sustainability. Current Opinion in Environmental Sustainability, v. 33, p. 58-69, Aug. 2018.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
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