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Immunohistochemical investigation of locust neuroparsin-like substances in several insects, in some other invertebrates, and vertebrates (1989)

Tamarelle, M. ; Girardie, J.

Springer

Histochemistry and cell biology 91 (1989), S. 431-435

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ISSN: 1432-119X

Source: Springer Online Journal Archives 1860-2000

Topics: Biology , Medicine

Notes: Summary Anti-neuroparsin serum was immunohistochemically tested on brain and/or neurohemal organ from 40 insect species belonging to 13 orders, and from 8 non-insect invertebrate and 5 vertebrate representatives using the peroxidase-antiperoxidase procedure. In insects, immunostaining of only the A1 type of the protocerebral median neurosecretory cells was revealed in all species tested of Odonata. Dictyoptera, Isoptera and Orthoptera and in 2 species from the 9 other orders out of 13 orders tested. No immunostaining was detected in vertebrate and non-insect invertebrate species except in 2 annelid species out of 4 tested. The distribution of neuroparsin-like products in Coelomata appears to be restricted mainly to 4 phylogenetically close insect orders.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00493831

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Neuroparsin: A new energetic neurohormone in the African locust (1988)

Moreau, R. ; Gourdoux, L. ; Girardie, J.

New York, NY [u.a.] : Wiley-Blackwell

Archives of Insect Biochemistry and Physiology 8 (1988), S. 135-145

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ISSN: 0739-4462

Keywords: Locusta migratoria ; neuroparsin ; corpora cardiaca ; trehalose ; glycogen ; lipid ; adipokinetic hormone ; Chemistry ; Food Science, Agricultural, Medicinal and Pharmaceutical Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Biology

Notes: The effects of neuroparsins on hemolymph trehalose and lipid levels and on total glycogen content were analyzed in Locusta migratoria. Saline and methanol extracts of the two lobes of the corpora cardiaca were assayed. Neuroparsins (A and B) were demonstrated to be hypertrehalosemic and hyperlipemic proteins of the neural lobe. Both of these metabolic activities of neuroparsins were somewhat less potent than those of adipokinetic hormone (AKH). Neuroparsin activity could be distinguished from AKH by blockage with an antiserum specific to neuroparsin. The hypertrehalosemic response induced by neuroparsins, in contrast to that of AKH, appeared to occur without a decrease of total glycogen content. The differential modes of action of AKH and neuroparsins could contribute to the fine modulation of carbohydrate metabolism in Locusta migratoria.

Additional Material: 1 Ill.