Effects of 5-hydroxytryptamine on the Malpighian tubules of Aedes aegypti
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Cited by (44)
Hormonal regulation and functional role of the “renal” tubules in the disease vector, Aedes aegypti
2021, Vitamins and HormonesCitation Excerpt :Therefore, it remains to be determined if 5HT may act through several pathways in A. aegypti that would involve multiple 5HT receptor subtypes or isoforms. Although both 5HT and DH31 work through similar signaling pathways, in adult A. aegypti, 5HT increases ion and fluid secretion without eliciting pronounced natriuretic activity (Sajadi et al., 2018; Veenstra, 1988). More recently, a study in adult female A. aegypti reported a moderate diuretic activity of 5HT, acting specifically as a kaliuretic hormone, selectivity secreting K+ (Sajadi et al., 2018).
Octopamine receptor gene expression in three lepidopteran species of insect
2013, PeptidesCitation Excerpt :This could be due to the fact that different stages of the life cycles were used in the two studies, and it is known that unlike adult tubules, the tubules of lepidopteran larvae exhibit high endogenous secretory activity and have no need for diuretic stimulation [10]. Still another study revealed the lack of octopaminergic action on the Malpighian tubules of the mosquito, Aedes aegypti [39], further highlighting the fact that octopaminergic control of Malpighian tubules is not uniform among insects. A high relative expression of the OARbeta1 receptor gene, the most highly expressed OAR in the T. ni Malpighian tubule when all genes are compared directly (Fig. 3), seen in all three of our test species indicates that this receptor is a good candidate for octopaminergic control in this tissue of lepidopteran larvae, rather than the OA/TA receptor that has been reported in other insects [6].
Water Homeostasis and Osmoregulation as Targets in the Control of Insect Pests
2013, Advances in Insect PhysiologyCitation Excerpt :As immunohistochemical staining indicated that tyramine is synthesized in principal cells, its action as a paracrine hormone on the neighbouring stellate cells, where chloride conductance occurs, was suggested (Lange, 2009). Serotonin stimulated fluid secretion by isolated MTs of various insects including the mosquito A. aegypti (Clark and Dradley, 1998; Veenstra, 1988), the tobacco hornworm M. sexta (Skaer et al., 2002), the citrus swallowtail butterfly, Papilio demodocus (Nicolson and Millar, 1983), the locust, L. migratoria (Morgan and Mordue, 1984) and the house cricket A. domesticus (Coast, 2011). However, most studies on serotonin as a DH with a major regulatory role were conducted with the blood-gorging bug, R. prolixus as a model insect (Coast, 2009; Lange et al., 1989; Maddrell et al., 1969, 1991; Orchard, 2006).
Hormones Controlling Homeostasis in Insects
2012, Insect EndocrinologySerotonin has kinin-like activity in stimulating secretion by Malpighian tubules of the house cricket Acheta domesticus
2011, PeptidesCitation Excerpt :However, whereas serotonin maximally stimulates secretion by R. prolixus MT, its activity in A. domesticus is about 25% of that achievable with either Achdo-DH or crude extracts of the CC. Similarly, in other insects (L. migratoria, C. vicina, A. aegypti, P. demodocus and M. sexta) serotonin activity is less (ranging from about 40% to 65%) than the maximum response to a DH present in tissue extracts or exogenous cAMP [27,28,36,37,42]. The diuretic activity of serotonin on cricket MT is similar to that reported for Achdo-KI [11].
Hormones Controlling Homeostasis in Insects
2011, Insect Endocrinology
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Present address: Department of Biological Organic Chemistry (C.S.I.C.), Jorge Girona Salgado, 18–26, 08034 Barcelona, Spain.