کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2204019 1100545 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Allatotropin expression during the development of the fourth instar larvae of the kissing-bug Triatoma infestans (Klüg)
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم کشاورزی و بیولوژیک (عمومی)
پیش نمایش صفحه اول مقاله
Allatotropin expression during the development of the fourth instar larvae of the kissing-bug Triatoma infestans (Klüg)
چکیده انگلیسی

Allatotropin (AT) is a neuropeptide originally isolated from the brain of Manduca sexta and then characterized in several insect species. It acts as a neurohormone, as well as a neuromodulator. While it was primarily characterized on the basis of its ability to stimulate the secretion of juvenile hormones, it was also found that it acts as a cardioaccelerator and myostimulator. The presence of AT in IV instar larvae of T. infestans was previously described at the level of the Malpighian tubules. In the present study we report the presence of the peptide at the level of the brain, retrocerebral complex, as well as in the anterior midgut and aorta. The presence of AT at the corpora allata suggests that the peptide is acting on the gland during the first days of the moulting cycle. Neural processes at the level of the aorta and the anterior midgut suggests that, like in adults, the hormone is acting as a cardioaccelerator and myostimulator. The peptide was also found in open-type cells of the midgut. Finally the presence of allatotropic neurons in the optical lobe of the brain suggests that as in other species, the peptide is related with the control of circadian rhythms.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tissue and Cell - Volume 42, Issue 6, December 2010, Pages 355–359
نویسندگان
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