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180603s2014 xx |||||o 00| ||eng c |
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|a 10.1016/j.asd.2014.05.001
|2 doi
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|a GBVA2014004000022.pica
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|a (DE-627)ELV033701490
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|a (ELSEVIER)S1467-8039(14)00041-3
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1 |
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|a Brandão, Amanda dos Santos
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Cell death and tissue reorganization in Rhynchosciara americana (Sciaridae: Diptera) metamorphosis and their relation to molting hormone titers
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|c 2014transfer abstract
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|a 12
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|a nicht spezifiziert
|b zzz
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|a Programmed cell death (PCD) is a focal topic for understanding processes underlying metamorphosis in insects, especially so in holometabolous orders. During adult morphogenesis it allows for the elimination of larva-specific tissues and the reorganization of others for their functionalities in adult life. In Rhynchosciara, this PCD process could be classified as autophagic cell death, yet the expression of apoptosis-related genes and certain morphological aspects suggest that processes, autophagy and apoptosis may be involved. Aiming to reveal the morphological changes that salivary gland and fat body cells undergo during metamorphosis we conducted microscopy analyses to detect chromatin condensation and fragmentation, as well as alterations in the cytoplasm of late pupal tissues of Rhynchosciara americana. Transmission electron microscopy and confocal microscopy revealed cells in variable stages of death. By analyzing the morphological structure of the salivary gland we observed the presence of cells with autophagic vacuoles and apoptotic bodies and DNA fragmentation was confirmed with the TUNEL assay in salivary gland. The reorganization of fat body occurs with discrete detection of cell death by TUNEL assay. However, both salivary gland histolysis and fat body reorganization occur under control of the hormone ecdysone.
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|a Programmed cell death (PCD) is a focal topic for understanding processes underlying metamorphosis in insects, especially so in holometabolous orders. During adult morphogenesis it allows for the elimination of larva-specific tissues and the reorganization of others for their functionalities in adult life. In Rhynchosciara, this PCD process could be classified as autophagic cell death, yet the expression of apoptosis-related genes and certain morphological aspects suggest that processes, autophagy and apoptosis may be involved. Aiming to reveal the morphological changes that salivary gland and fat body cells undergo during metamorphosis we conducted microscopy analyses to detect chromatin condensation and fragmentation, as well as alterations in the cytoplasm of late pupal tissues of Rhynchosciara americana. Transmission electron microscopy and confocal microscopy revealed cells in variable stages of death. By analyzing the morphological structure of the salivary gland we observed the presence of cells with autophagic vacuoles and apoptotic bodies and DNA fragmentation was confirmed with the TUNEL assay in salivary gland. The reorganization of fat body occurs with discrete detection of cell death by TUNEL assay. However, both salivary gland histolysis and fat body reorganization occur under control of the hormone ecdysone.
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| 650 |
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7 |
|a Salivary gland
|2 Elsevier
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| 650 |
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7 |
|a Fat body
|2 Elsevier
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| 650 |
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7 |
|a Autophagy
|2 Elsevier
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| 650 |
|
7 |
|a Postembryonic development
|2 Elsevier
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| 650 |
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7 |
|a Apoptosis
|2 Elsevier
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| 700 |
1 |
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|a do Amaral, Jônatas Bussador
|4 oth
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| 700 |
1 |
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|a Rezende-Teixeira, Paula
|4 oth
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| 700 |
1 |
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|a Hartfelder, Klaus
|4 oth
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| 700 |
1 |
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|a Siviero, Fábio
|4 oth
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| 700 |
1 |
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|a Machado-Santelli, Gláucia Maria
|4 oth
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| 773 |
0 |
8 |
|i Enthalten in
|n Elsevier Science
|t Ventricular Restraint Improves Outcomes in HF Patients with CRT
|d 2011
|g Amsterdam [u.a.]
|w (DE-627)ELV015921530
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| 773 |
1 |
8 |
|g volume:43
|g year:2014
|g number:5
|g pages:511-522
|g extent:12
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| 856 |
4 |
0 |
|u https://doi.org/10.1016/j.asd.2014.05.001
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