Sensitivity of gypsy moth neurosecretory neurons to acute thermal stress
2013
Ilijin, L. (Institute for Biological Research Siniša Stanković, Belgrade (Serbia). Department of Insect Physiology and Biochemistry) | Vlahović, M. (Institute for Biological Research Siniša Stanković, Belgrade (Serbia). Department of Insect Physiology and Biochemistry) | Mrdaković, Marija (Institute for Biological Research Siniša Stanković, Belgrade (Serbia). Department of Insect Physiology and Biochemistry) | Mirčić, D. (State University of Novi Pazar, Novi Pazar (Serbia). Department of Biochemical and Medical Sciences) | Matić, D. (Institute for Biological Research Siniša Stanković, Belgrade (Serbia). Department of Insect Physiology and Biochemistry) | Nenadović, Vera (Institute for Biological Research Siniša Stanković, Belgrade (Serbia). Department of Insect Physiology and Biochemistry) | Perić-Mataruga, Vesna (Institute for Biological Research Siniša Stanković, Belgrade (Serbia). Department of Insect Physiology and Biochemistry)
In gypsy moth caterpillars exposed to a temperature of 35ºC (for 1, 12 and 24 h and caterpillars that were ex- posed to elevated temperature for 12 h and were allowed to recover for 12 h at 23ºC), changes in the brain protein profiles and morphometric characteristics of A1’ medial and L2 lateral protocerebral neurosecretory neurons were analyzed. In all groups, protein bands with a molecular mass corresponding to that of members of heat-shock protein families were detected, indicating that acute exposure to this temperature likely induced the synthesis of HSP. Increased morphometric parameters of A1’ neurons and the large amount of neurosecretory material in the neuron body implicate that the temperature of 35˚C is not in the temperature range that exerts stimulatory effects on growth and survival. Changes in the morphometric characteristics of L2 neurosecretory neurons from the lateral part of the protocerebrum, and retention of neurosecretory material in their cytoplasm indicate a low level of secretion.
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