Probable endocrine role of midgut tissue in stimulation of digestive enzyme secretion inOryctes rhinoceros (Coleoptera: Scarabaeidae)

Sreekumar, S.; Prabhu, V. K. K.

doi:10.1007/bf03179513

Cited by 5 publications

(2 citation statements)

References 20 publications

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“…These results are consistent with an earlier study that showed that an increase in brain extract concentration caused an increase in the release of α-amylase from the midgut tissue of larvae of O. arenosella (Harshini et al 2003). Another study showed that a midgut peptide or probably hormone has a similar action in the larvae of Oryctes rhinoceros (Coleoptera: Scarabaeidae) (Sreekumar and Prabhu 1988).…”

Section: Discussionsupporting

confidence: 92%

Some Brain Peptides Regulating the Secretion of Digestive Enzymes in the Indian Meal Moth, Plodia Interpunctella (Lepidoptera: Pyralidae)

Sajjadian¹,

Hosseininaveh²,

Talebi³

2014

Journal of Plant Protection Research

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The Indian meal moth, Plodia interpunctella (Hübner) (Lepidoptera: Pyralidae) is a destructive polyphagous pest of many stored products. To interfere with the physiological processes, especially digestion, of the larval pest, more information on the regulatory mechanisms is needed. The brain extract from 1-day-old last instar larvae of P. interpunctella was examined. In the bioassays, the midguts were treated with the brain extract, and the carbohydrase and protease activities were measured. The brain extract showed increasing dose-dependent effects on α-amylase, α-glucosidase, β-glucosidase, α-galactosidase, β-galactosidase, and trypsin secretion in the larval midgut. The extract was further characterised and partially purified using high performance liquid chromatography (HPLC). Several peptides were determined in the brain extract regulating hydrolase activities in the larval midgut of the pest.

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Section: Discussionsupporting

confidence: 92%

Some Brain Peptides Regulating the Secretion of Digestive Enzymes in the Indian Meal Moth, Plodia Interpunctella (Lepidoptera: Pyralidae)

Sajjadian¹,

Hosseininaveh²,

Talebi³

2014

Journal of Plant Protection Research

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“…By contrast, in larval corn earworms, Heliothis zed, feeding evokes an increase in FMRFamide immunoreactivity in the endocrine cells, whereas the blood concentration of the immunoreactive agent is higher in starved insects [48]. Under in vitro conditions, midgut extracts were shown to stimulate activity of digestive enzymes [49]. Our present finding of PTTH-, ATH-, and DH-like immunoreactivity in the midgut ( Table 4) indicates that the gut may exert some adenotropic effects and regulate excretion.…”

Section: Discussionmentioning

confidence: 92%

Peptidergic innervation and endocrine cells of insect midgut

Žitňan

Šauman

Sehnal

1993

Arch Insect Biochem Physiol

101

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Antibody against FMRFamide reacts with the stomatogastric innervation and with the midgut endocrine cells in the representatives of most insect orders.The innervation was not revealed in Homoptera, Heteroptera, and Hymenoptera, and the endocrine cells were not recognized in aphids. Other insects exhibited FMRF-amide positive endocrine cells of both open and closed types. The cells are mostly single, rarely grouped, and are distributed unequally in different midgut regions; some of the cells project cytoplasmic extensions indicative of a paracrine function. Investigations on Galleria revealed that the gut innervation persists during midgut reconstruction in the course of metamorphosis. The endocrine cells are sloughed off into the new gut lumen, but there they maintain their antigenic properties until a new population of endocrine cells becomes detectable.Antisera to most mammalian gastroenteropancreatic peptides react specifically with the innervation and/or the endocrine cells of insect midgut; only antisera to bombesin, neurotensin, secretin, motilin, and insulin failed to react. All insects seem to contain antigens that can be detected with antisera to pancreatic polypeptide, FMRFamide, enkephalins, and vasopressins. Stomatogastric innervation and the endocrine cells of some lepidopterans also possess allatotropinand diuretic hormone-like antigens; stomatogastric ganglia, in particular, a prothoracicotropic hormone-like antigen. 0 1993 WiIey-~iss, Inc.

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Mechanisms controlling the synthesis and secretion of digestive enzymes in insects

Lehane¹,

Müller²,

Crisanti³

1996

Biology of the Insect Midgut

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Probable endocrine role of midgut tissue in stimulation of digestive enzyme secretion inOryctes rhinoceros (Coleoptera: Scarabaeidae)

Cited by 5 publications

References 20 publications

Some Brain Peptides Regulating the Secretion of Digestive Enzymes in the Indian Meal Moth, Plodia Interpunctella (Lepidoptera: Pyralidae)

Some Brain Peptides Regulating the Secretion of Digestive Enzymes in the Indian Meal Moth, Plodia Interpunctella (Lepidoptera: Pyralidae)

Peptidergic innervation and endocrine cells of insect midgut

Mechanisms controlling the synthesis and secretion of digestive enzymes in insects

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