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pubmed-article:12135343pubmed:abstractTextThe effects of catecholamine synthesis inhibitors (alpha-methyltyrosine, 3-iodotyrosine, and alpha-methyl-DOPA) and dopamine receptor blockers (haloperidol and spiperone) on the regeneration of apical, gastral, and basal fragments of the hydra Hydra attenuata were studied. These experiments showed that alpha-methyltyrosine and 3-iodotyrosine significantly inhibited regeneration but did not produce morphological anomalies. Alpha-Methyl-DOPA produce less inhibition of regeneration, but induced ectopic tentacles and outgrowths in gastral regenerates. Haloperidol and spiperone had no significant effect on the rate of regeneration but induced significant numbers of morphogenetic anomalies in gastral regenerates. Apical and basal regenerates, which retained their natural organizers (the head and base respectively) never yielded morphogenetic anomalies in the presence of either dopamine receptor blockers or dopamine synthesis inhibitors. The possible role of neurotransmitters. particularly dopamine, in morphogenesis in hydras is discussed.lld:pubmed
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pubmed-article:12135343pubmed:dateRevised2006-11-15lld:pubmed
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pubmed-article:12135343pubmed:articleTitleThe effects of dopamine synthesis inhibitors and dopamine antagonists on regeneration in the hydra Hydra attenuata.lld:pubmed
pubmed-article:12135343pubmed:affiliationM. V. Lomonosov Moscow State University, Vorob'ev Heights, Russia.lld:pubmed
pubmed-article:12135343pubmed:publicationTypeJournal Articlelld:pubmed
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pubmed-article:12135343pubmed:publicationTypeResearch Support, Non-U.S. Gov'tlld:pubmed