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The Neuropeptide APGWamide as a Penis Morphogenic Factor (PMF) in Gastropod Mollusks Eva Oberdörster, Jocelyn Romano, Patricia McClellan-Green Integrative and Comparative Biology, Volume 45 (1) - Jan 1, 2005 Read Article Download PDF Share Full Text for Free (beta) 5 pages Article Details Recommended References Bookmark Add to Folder Cite Social. APWGamide (APWGa) controls molluskan male reproductive behavior. Male mollusks possess this peptide more in the nerve cells, particularly in the reproductive accessory organ, in comparison with females. Discovery APWGa was originally isolated from the CNS of molluskan Fusinus ferrugineus by assaying inhibitory effects on the twitch contraction [1]. In addition, immunohistochemistry for APGWamide expression in abdominal areas was done on female, male and im-posex snails collected from the wild. The pattern of APGWamide in imposex snails was similar to male snails, showing large patches of immuno-reactive areas in the top portion of the visceral mass. The amidated tetrapeptide Ala-Pro-Gly-Trp-NH 2 (APGWamide) and related peptides are conserved neuropeptides playing a key role in the control of male copulation behavior in gastropods [9], which are also present in bivalves [16], [21] as well in cephalopods [20], where they inhibit contraction of mature oviduct.
Has-APGWamide is predicted to encode 10 copies of APGWamide, 6 connecting peptides (CPs), and a C-terminal peptide, and is most similar to the Aplysia californica APGWamide gene [ 30] (Figure 1 B); H. asinina CPs are numbered using the system for Aplysia [ 31 ]. FMRFamide-related peptides act synergistically with other mollusk-specific neuropeptides like APGWamide-related peptides. In H. aspersa, some cells contain both the APGWamide and FMRFamide; these cells may have dual projections in both the penial nerve and the nervus cutaneous pedalis primus dexter ( 71 ). class="algoSlug_icon" data-priority="2">Web.
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Download scientific diagram | Aminoacidic sequence of pre-pro-APGWamide peptide from contig JR446524 of Octopus transcriptome (Zhang et al. 2012). Copies of APGWamide are underlined and glycine. Gastropod molluscs are among the most abundant species that inhabit coral reef ecosystems. Many are specialist predators, along with the giant triton snail Charonia tritonis (Linnaeus, 1758) whose diet consists of Acanthaster planci (crown-of-thorns starfish), a corallivore known to consume enormous quantities of reef-building coral. C. tritonis are considered vulnerable due to.
AOD9604 is a peptide derivative of HGH. It targets areas with high amounts of fat deposition and stimulates fat loss by inhibiting lipogenesis and promoting lipolysis. Top Studies Metabolic studies of a synthetic lipolytic domain (AOD9604) of human growth hormone AOD-9604 Metabolic Street Names Fat burning peptide , Tyr-hGH frag 176-191 Effects. class="algoSlug_icon" data-priority="2">Web. class="algoSlug_icon" data-priority="2">Web.
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We investigated whether neuropeptides which control sexual differentiation in mollusks can induce imposex-a condition where female snails grow male accessory sex organs after exposure to tributyltin (TBT). Mud snails, Ilyanassa obsoleta, were dosed with one of four neuropeptides: APGWamide, conopressin, LSSFVRIamide, or FMRFamide for seven or fourteen days. TBT and testosterone (T) were used. Characterisation of Reproduction-Associated Genes and Peptides in the Pest Land Snail, Theba pisana. Project description:.
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Molecular cloning of a cDNA encoding the neuropeptides APGWamide and cerebral peptide 1: Localization of APGWamide-like immunoreactivity in the central nervous system and male reproductive organs ofAplysia. Another neuropeptide, Ala-Pro-Gly-Trp-NH2 ( APGWamide ), can also control sexual maturation and reproduction of mollusks. APGWamide can function as a central and peripheral neuromediator in the control of male reproduction of Lymnaea stagnalis ( Van Golen et al., 1995; De Boer et al., 1997) and Ilyanassa obsolete ( Oberdorster et al., 2005 ). class="algoSlug_icon" data-priority="2">Web.
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Share Molecular cloning of a cDNA encoding the neuropeptides APGWamide and cerebral peptide 1: Localization of APGWamide-like immunoreactivity in the central nervous system and male reproductive organs ofAplysia. class="algoSlug_icon" data-priority="2">Web. class="algoSlug_icon" data-priority="2">Web.
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FMRFamide-related peptides act synergistically with other mollusk-specific neuropeptides like APGWamide-related peptides. In H. aspersa, some cells contain both the APGWamide and FMRFamide; these cells may have dual projections in both the penial nerve and the nervus cutaneous pedalis primus dexter ( 71 ). Expression of the APGWamide gene is detected in the CNS of both adult animals and noncopulating juveniles. Peptides derived from the APGWamide prohormone are probably involved in the control of a part of the male mating behavior and have both central and peripheral targets. Full text links. class="algoSlug_icon" data-priority="2">Web.
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We investigated whether neuropeptides which control sexual differentiation in mollusks can induce imposex-a condition where female snails grow male accessory sex organs after exposure to tributyltin (TBT). Mud snails, Ilyanassa obsoleta, were dosed with one of four neuropeptides: APGWamide, conopressin, LSSFVRIamide, or FMRFamide for seven or fourteen days. TBT and testosterone (T) were used.
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Bacterial diversity in mantle of Patinopecten yessoensis Targeted Locus (Loci). FMRFamide-related peptides act synergistically with other mollusk-specific neuropeptides like APGWamide-related peptides. In H. aspersa, some cells contain both the APGWamide and FMRFamide; these cells may have dual projections in both the penial nerve and the nervus cutaneous pedalis primus dexter ( 71 ). The neuropeptide APGWamide is involved in the control of the reproductive behavior in molluscs. Using immunocytochemistry, we investigated the distribution of APGWa-immunoreactive neurons in the brain and reproductive organs of adult male and female specimen of Idiosepius pygmaeus.The study showed that the APGWamide-immunoreactive neurons and fibers are localized in the dorsal basal and. The Neuropeptide APGWamide as a Penis Morphogenic Factor (PMF) in Gastropod Mollusks Integr Comp Biol. 2005 Jan;45 (1):28-32. doi: 10.1093/icb/45.1.28. Authors Eva Oberdörster 1 , Jocelyn Romano , Patricia McClellan-Green Affiliation 1 Duke University Marine Laboratory, Beaufort, North Carolina. PMID: 21676741 DOI: 10.1093/icb/45.1.28. Conference Description. The 2022 GRC Chemistry and Biology of Peptides conference will highlight the diversity of peptide science. Attendees will engage in discussions regarding discoveries, challenges and advances in the design, synthesis, characterization and translation of peptides. Sessions focusing on chemical biology and organic synthesis.
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imposex induction in snails. APGWamide is a common neurotransmittor/neuromodulator peptide found in many species of molluscs, and is often related to sex organ growth or reproductive behavior. Mud snails (Ilyanassa obsoleta) were collected from the Rachel Carson Estuarine Reserve near Beaufort, NC, and were. class="algoSlug_icon" data-priority="2">Web. A Biblioteca Virtual em Saúde é uma colecao de fontes de informacao cientÃfica e técnica em saúde organizada e armazenada em formato eletrônico nos paÃses da Região Latino-Americana e do Caribe, acessÃveis de forma universal na Internet de modo compatÃvel com as bases internacionais.
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APGWamide-like peptide was first identified in neurons within the right anterior lobe of the cerebral ganglion of the snail, Helix aspersa (Griffond et al. 1992 ), and has since been found in the nervous system of several species of gastropods (Croll and Van Minnen 1992; Smith et al. 1997; De Lange and Van Minnen 1998; Chansela et al. 2008 ). class="algoSlug_icon" data-priority="2">Web.
