Search results for "Carausius morosus"

showing 3 items of 3 documents

Neurosecretion in the Frontal Ganglion of the Stick Insect, Carausius morosus

1978

The presence of neurosecretory cells in the frontal ganglion (FG) has been demonstrated only in the Lepidoptera Bombyx (BOUNHIOL et al., 1953), Manduca (BORG et al., 1973; BELL et al., 1974), and Diatraea (YIN and CHIPPENDALE, 1975). In Manduca and Diatraea the neurosecretory material of the FG is apparently involved in the regulation of diapause.

Carausius morosusDiatraeaLepidoptera genitaliabiologymedia_common.quotation_subjectInsectDiapauseManducabiology.organism_classificationNeurosecretionBombyxmedia_commonCell biology
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Degenerative and regenerative processes involved in midgut pseudotumor formation in the stick insect (Carausius morosus)

2009

Spontaneous and experimentally induced pseudotumor formation in Carausius morosus impairs the midgut tissue homeostasis. Spontaneous pseudotumor formation begins by the break down of a single or a small group of columnar cells (CCs) and is followed by the degeneration of neighboring CCs. There are not only marked similarities but also decisive differences between normal dying CCs in healthy specimens and the degeneration of CCs leading to pseudotumors: in both cases, the apical cell parts with the nucleus are extruded into the midgut lumen, but only during of pseudotumor formation an "amorphous substance" originates from the basal parts of the CCs. Hemocytes are attracted to this substance …

Carausius morosusPathologymedicine.medical_specialtyHemocytesInsectaCellular differentiationColumnar CellGranuloma Plasma CellDigestive System Physiological PhenomenaStomatogastric nervous systemmedicineAnimalsHomeostasisRegenerationProgenitor cellTissue homeostasisCell ProliferationbiologyStem CellsfungiCell DifferentiationMidgutbiology.organism_classificationstomatognathic diseasesAnimal Science and ZoologyStem cellDigestive SystemDevelopmental BiologyJournal of Morphology
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Midgut pseudotumors and the maintenance of tissue homeostasis: studies on aging and manipulated stick insects.

2009

Stick insects (Carausius morosus) develop pseudotumors in aging adults. Pseudotumor formation starts at the M2 midgut region where an accumulation of stomatogastric nerve terminals is observed. Pseudotumors arise from dying columnar cells whose basal parts form an “amorphous substance” at the basement membrane whereas the apical parts, including the nucleus, are expelled into the gut lumen. The “amorphous substance” is ensheathed by hemocytes. These nodules, which do not melanize, characterize the phenotype of the pseudotumors. With age, cell death and pseudotumor infestation increases. It is shown that the maintenance of midgut tissue homoeostasis is disturbed and becomes more serious with…

Carausius morosusProgrammed cell deathPathologymedicine.medical_specialtyAgingInsectaMidgutColumnar CellBiologybiology.organism_classificationModels BiologicalGastrointestinal Tractstomatognathic diseasesStomatogastric nervous systemmedicineAnimalsHomeostasisAnimal Science and ZoologyStem cellHomeostasisTissue homeostasisDevelopmental BiologyJournal of morphology
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