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Seidelmann K, Helbing C, Göbeler N, Weinert H. Sequential oogenesis is controlled by an oviduct factor in the locusts Locusta migratoria and Schistocerca gregaria: Overcoming the doctrine that patency in follicle cells is induced by juvenile hormone. JOURNAL OF INSECT PHYSIOLOGY 2016; 90:1-7. [PMID: 27040271 DOI: 10.1016/j.jinsphys.2016.03.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 03/28/2016] [Accepted: 03/31/2016] [Indexed: 06/05/2023]
Abstract
In insects that lay eggs in large clutches, yolk accumulation in each of the many ovarioles is restricted to the basal (terminal) oocyte, the one closest to the lateral oviduct. All succeeding (subterminal) oocytes remain small until the terminal oocytes finished their development and were ovulated into the oviduct. The major step regulating yolk uptake by terminal oocytes is the formation of gaps between cells of the follicle layer, a process termed patency. In the migratory as well as in the desert locust, patency is induced by a Patency Inducing Factor (PIF) produced by the lateral oviducts. PIF is secreted in all regions of the lateral oviducts and interacts with the basal follicle cells via the pedicel, a fine duct that connects an ovariole with the oviduct. By this mechanism, patency is triggered in the follicle cells of the terminal oocyte only, restricting yolk accumulation to the oocytes next to ovulation. In contrast to the previous hypothesis, juvenile hormone (JH) is not necessary to induce patency, rather JH amplifies the effect of PIF.
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Affiliation(s)
- Karsten Seidelmann
- Martin-Luther-Universität Halle-Wittenberg, Institut für Biologie/Zoologie, Abteilung Tierphysiologie, Hoher Weg 8, D-06099 Halle (Saale), Germany.
| | - Cornelia Helbing
- Martin-Luther-Universität Halle-Wittenberg, Institut für Biologie/Zoologie, Abteilung Tierphysiologie, Hoher Weg 8, D-06099 Halle (Saale), Germany
| | - Norman Göbeler
- Martin-Luther-Universität Halle-Wittenberg, Institut für Biologie/Zoologie, Abteilung Tierphysiologie, Hoher Weg 8, D-06099 Halle (Saale), Germany
| | - Heike Weinert
- Martin-Luther-Universität Halle-Wittenberg, Institut für Biologie/Zoologie, Abteilung Tierphysiologie, Hoher Weg 8, D-06099 Halle (Saale), Germany
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Warwick S, Vahed K, Raubenheimer D, Simpson SJ. Free amino acids as phagostimulants in cricket nuptial gifts: support for the 'Candymaker' hypothesis. Biol Lett 2009; 5:194-6. [PMID: 19158029 DOI: 10.1098/rsbl.2008.0731] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Nuptial gifts that are manufactured by the male are found in numerous insect species and some spiders, but there have been very few studies of the composition of such gifts. If, as has been proposed recently, nuptial gifts represent sensory traps, males will be selected to produce gifts that are attractive to females but such gifts will not necessarily provide the female with nutritional benefits (the 'Candymaker' hypothesis). We examined the free amino acid content of the spermatophylax of the cricket Gryllodes sigillatus (Orthoptera: Gryllidae) using high performance liquid chromatography (HPLC). The spermatophylax (dry weight) consisted of approximately 7 per cent free amino acids. The free amino acid composition was highly imbalanced, with a low proportion of essential amino acids (18.7%) and a high proportion of proline and glycine. The main free amino acids found in the spermatophylax appeared to act as phagostimulants: the duration of feeding on artificial gels by females was positively related to the free amino acid content of the gels. The results therefore suggest that males use free amino acids to 'sweeten' a relatively low-value food item. A possible function of glycine in inhibiting female movement is also proposed.
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Affiliation(s)
- Stuart Warwick
- Biological Sciences Research Group, Faculty of Education, Health and Sciences, University of Derby, Derby DE22 IGB, UK
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Huybrechts J, Clynen E, Baggerman G, De Loof A, Schoofs L. Isolation and identification of the AKH III precursor-related peptide from Locusta migratoria. Biochem Biophys Res Commun 2002; 296:1112-7. [PMID: 12207888 DOI: 10.1016/s0006-291x(02)02055-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
We have isolated an 8770Da peptide from extracts of corpora cardiaca of adult male and female Locusta migratoria. The N-terminal amino-acid sequence as partially established by Edman degradation is Ala-Leu-Gly-Ala-Pro-Ala-Ala-Gly-Asp. These nine amino acids correspond to the first nine N-terminal amino acids of the adipokinetic hormone precursor-related peptide gamma-chain (APRP-gamma), a peptide that is predicted from the gene encoding the adipokinetic hormone III precursor. The APRP-gamma chain has a monoisotopic mass of 4387Da and contains two cysteine residues. It is known that both AKH I and AKH II precursors occur as dimers. After processing they give rise to the active hormones and three dimeric (two homodimers and one heterodimer) adipokinetic hormone precursor related peptides (APRPs). Based on the mass of 8770Da and the established N-terminal sequence tag, we conclude that the isolated peptide is a homodimer consisting of two APRP-gamma units, covalently linked to each other by two disulphide bounds. In analogy with the previous identified APRPs (APRP-1, APRP-2, and APRP-3), this APRP will be designated as APRP-4.
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Affiliation(s)
- Jurgen Huybrechts
- Laboratory for Developmental Physiology and Molecular Biology, K.U. Leuven, 59 Naamsestraat, BE-3000, Leuven, Belgium.
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Hügele BF, Oag V, Bouaïchi A, McCaffery AR, Simpson SJ. The role of female accessory glands in maternal inheritance of phase in the desert locust Schistocerca gregaria. JOURNAL OF INSECT PHYSIOLOGY 2000; 46:275-280. [PMID: 12770232 DOI: 10.1016/s0022-1910(99)00180-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/1999] [Accepted: 07/26/1999] [Indexed: 05/24/2023]
Abstract
Accessory glands of crowd-reared females of Schistocerca gregaria were ligatured from the lateral oviducts. Hatchlings resulting from egg pods laid after the treatment showed a significant shift towards solitarious behaviour as compared to hatchlings from control-treated females. Morphometric measurement of hatchlings revealed no consistent difference between ligatured and control females, however, one ratio (hind femur length/vertex width) was approaching significance. Hatchlings from eggs of crowd-reared females behaved solitariously when freshly laid eggs were washed with a saline solution. Gregarious behaviour could be restored when washed eggs were treated with a saline extract of the accessory glands. The colouration of hatchlings was not affected by any treatment. Our findings implicate the accessory glands in the production, release or activation of the recently reported gregarizing factor found in the egg pod foam [McCaffery, A.R., Simpson, S.J., Islam, M.S., Roessingh, P., 1998. A gregarizing factor present in the egg pod foam of the desert locust Schistocerca gregaria. Journal of Experimental Biology 201, 347-363].
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Affiliation(s)
- B F Hügele
- University of Oxford, Department of Zoology, South Parks Road, Oxford OX1 3PS, UK
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Djordjević S, Nenadović V, Ivanović J. Effect of crude corpora cardiaca extracts on carbohydrate and lipid metabolism in larvae of the cerambycid beetle Morimus funereus as a function of diet and temperature. Comp Biochem Physiol A Mol Integr Physiol 1999. [DOI: 10.1016/s1095-6433(98)10166-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Ismail SH, Hassanali A, Osir EO, Tawfik AI. Effects of juvenile hormone treatment on phase changes and pheromone production in the desert locust, Schistocerca gregaria (Forskal) (Orthoptera: Acrididae). JOURNAL OF INSECT PHYSIOLOGY 1997; 43:1177-1182. [PMID: 12770490 DOI: 10.1016/s0022-1910(97)00079-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The roles of juvenile hormone III (JH III) on phase changes and pheromone production were examined in laboratory-reared gregarious desert locust, Schistocerca gregaria (Forskal). The hormone was applied to 5th instar nymphs and newly emerged adult locusts. Generally, the 5th instar nymphs exhibited a higher sensitivity to hormone treatments than the adults. Hormone applications inhibited pheromone production (as measured by the amounts of phenylacetonitrile released). In addition, JH III had a significant effect on the external colouration and absorbance ratios of the haemolymph pigments. It is concluded that the effects of exogenous JH III on gregarious locusts represent a shift towards the solitarious phase.
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Affiliation(s)
- S H. Ismail
- Department of Zoology, Faculty of Science, Assiut University, Assiut, Egypt
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Mahamat H, Hassanali A, Ferenz HJ. Vitellogenin titres in normal and accelerated maturation of gregarious-phase Schistocerca gregaria. Comp Biochem Physiol B Biochem Mol Biol 1997; 116:447-51. [PMID: 9149398 DOI: 10.1016/s0305-0491(96)00274-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Isolation of vitellogenin of the Schistocerca gregaria (Forskal) in its gregarious phase was achieved by a combination of gel permeation and anion exchange chromatography. Staining for carbohydrate and lipid moieties showed that the vitellogenin is a glycolipoprotein. The vitellogenin of S. gregaria has a native molecular weight of about 700 kDa. On SDS-PAGE, the protein showed nine apoproteins of about 124, 120, 105, 60, 59, 58, 57, 53 and 34 kD. Determination of the levels of vitellogenin by ELISA in the haemolymph of maturing females showed that those exposed to mature males from 1 to 2 days after ecdysis had increased levels of vitellogenin from day 10 (81.1 +/- 4.5). In contrast, females exposed to immature males or kept alone showed an increase (107.3 +/- 0.9 and 70.2 +/- 2.7) not until day 16 or later, respectively. These results are consistent with the accelerating effect of pheromonal emissions from mature males on the maturation of female S. gregaria.
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Affiliation(s)
- H Mahamat
- International Centre of Insect Physiology and Ecology, Nairobi, Kenya.
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Abstract
The roles of acetylcholine, dopamine, octopamine, tyramine, 5-hydroxytryptamine, histamine, glutamate, 4-aminobutanoic acid (gamma-aminobutyric acid) and a range of peptides as insect neurotransmitters are evaluated in terms of the criteria used to identify transmitters. Of the biogenic amines considered, there is good evidence that acetylcholine, dopamine, octopamine, 5-hydroxytryptamine, and histamine should be considered to be neurotransmitters, but the case for tyramine is less convincing at the moment. The evidence supporting neurotransmitter roles for glutamate and gamma-aminobutyric acid at specific insect synapses is overwhelming, but much work remains to be undertaken before the full significance of these molecules in the insect nervous system is appreciated. Attempts to characterise biogenic amine and amino acid receptors using pharmacological and molecular biological techniques have revealed considerable differences between mammalian and insect receptors. The number of insect neuropeptides isolated and identified has increased spectacularly in recent years, but genuine physiological or biochemical functions can be assigned to very few of these molecules. Of these, only proctolin fulfills the criteria expected of a neurotransmitter, and the recent discovery of proctolin receptor antagonists should enable the biology of this pentapeptide to be explored fully.
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Affiliation(s)
- R H Osborne
- Department of Biology, University of the West of England, Bristol, UK
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Swevers L, Lambert JG, De Loof A. On the origin of vertebrate-type steroids present in Locusta migratoria: do they originate from the food? COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. B, COMPARATIVE BIOCHEMISTRY 1992; 102:591-600. [PMID: 1499296 DOI: 10.1016/0305-0491(92)90052-s] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
1. This study investigates the origin of vertebrate-type steroids which were reported to be present in Locusta migratoria: are the steroids synthesized by the locust or are they derived from the diet, i.e. grass and rolled oats? 2. It is unlikely that the steroids are synthesized by locust tissues. In vitro incubations of eleven different tissues with labeled pregnenolone or androstenedione did not result in androgen or estrogen synthesis respectively. 3. Steroid synthesis was also not detected when tissues were incubated in the presence of the early precursors cholesterol and isopentenyl pyrophosphate. 4. It is unlikely that the steroids are derived from the diet. Feeding experiments indicate that only low amounts of steroids are capable of crossing the gut-body barrier. 5. Injection of testosterone in the hemolymph also resulted in rapid excretion, instead of storage in tissues. 6. Moreover, radioimmunological measurements indicate that vertebrate-type steroids are absent in the food of locusts. 7. Specificity studies indicate that substances other than vertebrate-type steroids are detected by radioimmunoassay in locust tissue extracts. 8. Because vertebrate-type steroids are absent in locust tissues, it can be concluded that vertebrate-type steroids do not have a physiological function in Locusta.
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Affiliation(s)
- L Swevers
- Zoological Institute, Catholic University of Leuven, Belgium
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Swevers L, Lambert JG, Novak F, Paesen G, De Loof A. Lack of essential enzymes for the biosynthesis of C19 and C18 steroids in gonads of the migratory locust, Locusta migratoria. Gen Comp Endocrinol 1991; 84:237-48. [PMID: 1783269 DOI: 10.1016/0016-6480(91)90047-a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Ovaries and testes of the African migratory locust, Locusta migratoria migratorioides, were incubated in vitro with six tritiated steroid precursors. Three developmental stages were investigated--1 day, 14 days, and 6 weeks after adult moulting. 20 alpha-Hydroxysteroid dehydrogenase (HSD), 20 beta-HSD, 17 beta-HSD, 3 beta-HSD/isomerase, C17-C20 lyase, glucuronyl-transferase, sulfotransferase, and acyltransferase were identified in both sexes. A synthesis of androgens or estrogens comparable to the vertebrate type, however, was not apparent in the locust gonads. 20 alpha-HSD, 20 beta-HSD, and 17 beta-HSD activities were high, while more important steps in steroid synthesis such as 3 beta-HSD and C17-C20 lyase were far less intense. Ovarian 17 alpha-hydroxylase activity was slight. Aromatase activity was not demonstrated. Water-soluble conjugate formation was high in the incubations of "14th-day" and "6th-week" gonads but was absent in "1st-day" ovaries and testes. Active ester formation of pregnenolone was demonstrated in "6th-week" testes. The other steroid conversions were similar in all developmental stages investigated. Major differences between testes and ovaries were not observed. The gonads of the migratory locust are concluded not to produce androgens or estrogens.
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Affiliation(s)
- L Swevers
- Catholic University of Leuven, Zoological Institute, Belgium
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11
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Chung JS, Keeley LL. Evidence and bioassay for diuretic factors in the nervous system of larvalHeliothis virescens. J Comp Physiol B 1989. [DOI: 10.1007/bf00691516] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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12
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Moshitzky P, Henzel W, Rafaeli A, Ramachandran J, Applebaum S. Synthesis of adipokinetic hormone (AKH-I) in the locust brain. ACTA ACUST UNITED AC 1987. [DOI: 10.1016/0020-1790(87)90084-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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13
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Röhrkasten A, Ferenz HJ. Properties of the vitellogenin receptor of isolated locust oocyte membranes. ACTA ACUST UNITED AC 1986. [DOI: 10.1080/01688170.1986.10510236] [Citation(s) in RCA: 36] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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14
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Schooneveld H, Romberg-Privee HM, Veenstra JA. Adipokinetic hormone-immunoreactive peptide in the endocrine and central nervous system of several insect species: a comparative immunocytochemical approach. Gen Comp Endocrinol 1985; 57:184-94. [PMID: 3979801 DOI: 10.1016/0016-6480(85)90262-x] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The distribution of intrinsic glandular cells containing adipokinetic hormone (AKH)-like material in the corpora cardiaca (CC) and the occurrence of immunoreactive neurons in the nervous system in 19 species belonging to nine insect orders was studied by means of an immunocytochemical method (peroxidase-antiperoxidase), with antisera raised against an AKH analogue [( Tyr1]-AKH). The CC gland cells in Locusta migratoria migratorioides and Schistocerca americana gregaria were strongly immunoreactive. Those in other orders showed less or no immunoreactivity indicating that AKH has a very restricted distribution. Neurons containing immunoreactive material were found in the brain and ventral ganglia in all species investigated. As the specificity of the antiserum has not been determined, it is not known whether this peptide is identical to AKH. Considering the distribution of their axons, these neurons may be involved with one or more of the following functions: (1) nervous communication within the central nervous system; (2) communication with the stomatogastric nervous system; (3) possible release of peptide from the CC; (4) release of neuropeptide in or from the corpus allatum. A combination of these features has been found in only a few of the species investigated. The immunocytochemical study demonstrated significant differences among species belonging to Apterygota, Hemi-, and Holometabola in the number of neurons, the length and degree of branching of their axon, and the amount of immunoreactive peptide stored therein.
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R�hrkasten A, Ferenz HJ. In vitro study of selective endocytosis of vitellogenin by locust oocytes. ACTA ACUST UNITED AC 1985. [DOI: 10.1007/bf00848554] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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17
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Biochemical Processes Directed to Flight Muscle Metabolism. Biochemistry 1985. [DOI: 10.1016/b978-0-08-030811-1.50019-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
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Rafaeli A, Pines M, Stern PS, Applebaum SW. Locust diuretic hormone-stimulated synthesis and excretion of cyclic-AMP: a novel Malpighian tubule bioassay. Gen Comp Endocrinol 1984; 54:35-42. [PMID: 6327460 DOI: 10.1016/0016-6480(84)90195-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Endogenous cyclic-AMP concentrations in Malpighian tubules of locusts increase as a result of diuretic hormone stimulation, and the level of increase is shown to be dependent on basal intracellular levels of cyclic-AMP. Furthermore, the increase in endogenous cyclic-AMP is in such excess as to cause excretion of high levels of cyclic-AMP in the urine.
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Hemolymph trehalose and carbohydrates in starved male adult Locust a migratoria: Possibility of endocrine modification. ACTA ACUST UNITED AC 1984. [DOI: 10.1016/0300-9629(84)90582-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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20
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Morgan PJ, Mordue W. 5-Hydroxytryptamine stimulates fluid secretion in locust malpighian tubules independently of cAMP. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. C, COMPARATIVE PHARMACOLOGY AND TOXICOLOGY 1984; 79:305-10. [PMID: 6151458 DOI: 10.1016/0742-8413(84)90205-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
5-Hydroxytryptamine (5-HT) stimulates fluid secretion by semi-isolated Malpighian tubules of Locusta in a dose-dependent manner. The threshold of stimulation is between 10(-8) and 10(-7) M 5-HT; maximal activation occurs at doses greater than 10(-6) M. Relative to the activation induced by diuretic hormone (storage lobe extracts), 5-HT increases the rate of fluid secretion by only 65%. Phentolamine, the alpha-adrenergic blocker, failed to inhibit either DH or 5-HT stimulated secretion. Diuretic hormone raises the levels of intracellular of cAMP, and activates adenylate cyclase in plasma membrane preparations of Locusta Malpighian tubules. 5-HT (10(-4) M) has no effect in either assay system. Thus 5-HT can stimulate fluid secretion independently of cAMP. A hypothetical model for hormone stimulated fluid secretion by Locusta Malpighian tubules, involving dual-receptor activation, is proposed. Other biogenic amines, including octopamine, adrenalin, dopamine, synephrine and the formamidine chlordimeform were tested for their ability to stimulate fluid secretion. Only dopamine showed a weakly stimulatory effect.
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Lawson-Smith E, Hayes TK, Keeley LL. Isolation of neurosecretory granules containing cytochromogenic hormone activity from the corpora cardiaca of Blaberus discoidalis cockroaches. Gen Comp Endocrinol 1983; 52:149-56. [PMID: 6628975 DOI: 10.1016/0016-6480(83)90168-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Neurosecretory granules (NSG) were isolated by differential centrifugation from a homogenate of the corpora cardiaca-corpora allata complex of newly emerged, adult, female Blaberus discoidalis cockroaches. By centrifuging at 11,000 g, the procedure yielded a final pellet that was enriched in small, membrane-bound vesicles (103 nm mean diameter). This pellet contained 61% of the cytochromogenic activity present in the original homogenate at an 11-fold increase in concentration. A pellet formed at 4000 g contained a mixture of mitochondria and larger NSG (146 nm mean diameter) and most of the hindgut-stimulating hormone activity. This procedure provided a quick, simple method for purifying neurosecretory granules and separating them into two categories of size and endocrine content.
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23
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Morgan P, Mordue W. Separation and characteristics of diuretic hormone from the corpus cardiacum of Locusta. ACTA ACUST UNITED AC 1983. [DOI: 10.1016/0305-0491(83)90042-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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24
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Proux J, Rougon G, Cupo A. Enhancement of excretion across locust malpighian tubules by a diuretic vasopressin-like hormone. Gen Comp Endocrinol 1982; 47:449-57. [PMID: 7117815 DOI: 10.1016/0016-6480(82)90123-x] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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25
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26
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Rafaeli A, Mordue W. The responses of the Malpighian tubules of Locusta to hormones and other stimulants. Gen Comp Endocrinol 1982; 46:130-5. [PMID: 6277732 DOI: 10.1016/0016-6480(82)90173-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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27
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Hayes TK, Keeley LL. Cytochromogenic factor: a newly discovered neuroendocrine agent stimulating mitochondrial cytochrome synthesis in the insect fat body. Gen Comp Endocrinol 1981; 45:115-24. [PMID: 7026358 DOI: 10.1016/0016-6480(81)90176-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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28
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Pines M, Tietz A, Weintraub H, Applebaum SW, Josefsson L. Hormonal activation of protein kinase and lipid mobilization in the locust fat body in vitro. Gen Comp Endocrinol 1981; 43:427-31. [PMID: 6262189 DOI: 10.1016/0016-6480(81)90226-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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29
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30
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Glass H, Emmerich H. Properties of two follicle proteins and their possible role for vitellogenesis in the African Locust. ACTA ACUST UNITED AC 1981; 190:22-26. [DOI: 10.1007/bf00868699] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/1979] [Accepted: 10/20/1980] [Indexed: 10/26/2022]
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31
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32
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33
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Aston RJ, Hughes L. Diuretic Hormone—Extraction and Chemical Properties. SPRINGER SERIES IN EXPERIMENTAL ENTOMOLOGY 1980. [DOI: 10.1007/978-1-4612-6039-4_4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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34
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Lafon-Cazal M, Verron H. Ultrastructure des organes retrocerebraux de Lasius niger l. (Hymenoptera : Formicidae). ACTA ACUST UNITED AC 1980. [DOI: 10.1016/0020-7322(80)90020-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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35
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van Marrewijk W, van den Broek A, Beenakkers A. Regulation of glycogenolysis in the locust fat body during flight. ACTA ACUST UNITED AC 1980. [DOI: 10.1016/0020-1790(80)90057-8] [Citation(s) in RCA: 70] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ziegler R. Hyperglycaemic factor from the corpora cardiaca of Manduca sexta (L.) (Lepidoptera: Sphingidae). Gen Comp Endocrinol 1979; 39:350-7. [PMID: 499761 DOI: 10.1016/0016-6480(79)90132-1] [Citation(s) in RCA: 59] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Carlsen J, Herman WS, Christensen M, Josefsson L. Characterization of a second peptide with adipokinetic and red pigment-concentrating activity from the locust corpora cardiaca. ACTA ACUST UNITED AC 1979. [DOI: 10.1016/0020-1790(79)90069-6] [Citation(s) in RCA: 88] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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39
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Hughes L. Further investigation of the isolation of diuretic hormone from Rhodnius prolixus. ACTA ACUST UNITED AC 1979. [DOI: 10.1016/0020-1790(79)90057-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Studies on the diuretic hormone of Rhodnius prolixus. Some observations on the purification and nature of the hormone and the dynamics of its release in vitro. ACTA ACUST UNITED AC 1979. [DOI: 10.1016/0020-1790(79)90046-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Harry P, Pines M, Applebaum SW. Changes in the pattern of secretion of locust female diglyceride-carrying lipoprotein and vitellogenin by the fat body in vitro during oocyte development. ACTA ACUST UNITED AC 1979. [DOI: 10.1016/0305-0491(79)90042-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Harry P, Pines M, Applebaum SW. Inhibition of protein secretion and protein kinase activity in the locust fat body by diamide (azodicarboxylic acid-bis-dimethylamide). Arch Biochem Biophys 1978; 191:325-30. [PMID: 736570 DOI: 10.1016/0003-9861(78)90095-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Dürnberger H, Pohlhammer K, Weinbörmair G. The paramedial neurosecretory cells of the suboesophageal ganglion of the cricket, Teleogryllus commodus (walk.). Cell Tissue Res 1978; 187:489-94. [PMID: 639087 DOI: 10.1007/bf00229613] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Ovariectomy, performed immediately after the final hatch, caused a reduction of stainable (neurosecretory?) MATERIAL IN THE PARAMEDIAL NEUROSECREtory cells (PNC) (A-type) of the suboesophageal ganglion in 10 day-old females of Teleogryllus commodus (Walk.). A concomitant increase in nuclear volume and in the incorporation of 35S-cysteine indicates increased synthesis of neurosecretory material. From these findings it is concluded that more stainable material is secreted in the cerebral neurohaemal organ after ovariectomy. A functional relationship between the PNC and the ovaries is suggested.
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Mordue W, Stone JV. Relative potencies of locust adipokinetic hormone and prawn red pigment-concentrating hormone in insect and crustacean systems. Gen Comp Endocrinol 1977; 33:103-8. [PMID: 924106 DOI: 10.1016/0016-6480(77)90132-0] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Feyereisen R. A specific binding protein for the moulting hormone ecdysterone in locust haemolymph. EXPERIENTIA 1977; 33:1111-3. [PMID: 891832 DOI: 10.1007/bf01946001] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Specific binding of 3H-ecdysterone to a high mol. wt protein from Locusta migratoria haemolymph was shown by gel filtration. The hormone-protein complex shows a dissociation constant Kd congruent to 3.10(-7) M, and the concentration of binding sites varies during the last larval instar.
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Krogh IM, Nermann TC. The Corpus Cardiacum Neurosecretory Cells ofSchistocerca gregaria.Electron Microscopy of Resting and Secreting Cells. ACTA ZOOL-STOCKHOLM 1977. [DOI: 10.1111/j.1463-6395.1977.tb00240.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Holwerda DA, Doorn JV, Beenakkers AM. Characterization of the adipokinetic and hyperglycaemic substances from the locust corpus cardiacum. ACTA ACUST UNITED AC 1977. [DOI: 10.1016/0020-1790(77)90008-7] [Citation(s) in RCA: 86] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Berlind A. Cellular dynamics in invertebrate neurosecretory systems. INTERNATIONAL REVIEW OF CYTOLOGY 1977; 49:171-251. [PMID: 324940 DOI: 10.1016/s0074-7696(08)61949-x] [Citation(s) in RCA: 38] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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