Remodeling of the corpora cardiaca and the corpora allata during adult metamorphosis in Bombyx mori: identification of invisible corpora cardiaca by the expression of adipokinetic hormone

2010 ◽  
Vol 46 (1) ◽  
pp. 87-93 ◽  
Author(s):  
Yu Kaneko ◽  
Tetsuro Shinoda ◽  
Kiyoshi Hiruma
Keyword(s):  
Bombyx Mori ◽  
Corpora Allata ◽  
Adipokinetic Hormone ◽  
Corpora Cardiaca

scholarly journals Peptidomic Analysis of the Brain and Corpora Cardiaca-Corpora Allata Complex in the Bombyx mori

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Xiaoguang Liu ◽  
Xia Ning ◽  
Yan Zhang ◽  
Wenfeng Chen ◽  
Zhangwu Zhao ◽  
...  
Keyword(s):  
Bombyx Mori ◽  
Developmental Stages ◽  
Larval Instar ◽  
Corpora Allata ◽  
Corpora Cardiaca ◽  
Rp Hplc ◽  
Transcriptome Database ◽  
Peptidomic Analysis ◽  
Peptide Profiles ◽  
The Brain

The silkworm, Bombyx mori, is an important economic insect for silk production. However, many of the mature peptides relevant to its various life stages remain unknown. Using RP-HPLC, MALDI-TOF MS, and previously identified peptides from B. mori and other insects in the transcriptome database, we created peptide profiles showing a total of 6 ion masses that could be assigned to peptides in eggs, including one previously unidentified peptide. A further 49 peptides were assigned to larval brains. 17 new mature peptides were identified in isolated masses. 39 peptides were found in pupal brains with 8 unidentified peptides. 48 were found in adult brains with 12 unidentified peptides. These new unidentified peptides showed highly significant matches in all MS analysis. These matches were then searched against the National Center for Biotechnology Information (NCBI) database to provide new annotations for these mature peptides. In total, 59 mature peptides in 19 categories were found in the brains of silkworms at the larval, pupal, and adult stages. These results demonstrate that peptidomic variation across different developmental stages can be dramatic. Moreover, the corpora cardiaca-corpora allata (CC-CA) complex was examined during the fifth larval instar. A total of 41 ion masses were assigned to peptides.

Levels of tryptophan, 5-hydroxytryptamine, and dopamine in some tissues of the cockroach Periplaneta americana

1986 ◽  
Vol 64 (12) ◽  
pp. 2669-2673 ◽  
Author(s):  
B. Duff Sloley ◽  
Roger G. H. Downer ◽  
Cedric Gillott
Keyword(s):  
Nervous Tissue ◽  
High Performance ◽  
Periplaneta Americana ◽  
Corpora Allata ◽  
Suboesophageal Ganglion ◽  
Corpora Cardiaca ◽  
Thoracic Ganglia ◽  
Frontal Ganglion ◽  
Low Levels ◽  
Immunohistochemical Studies

Tryptophan, 5-hydroxytryptamine, and dopamine were measured in the frontal ganglion, corpora cardiaca, corpora allata, nerves of the suboesophageal ganglion, nerves of the thoracic ganglia, gut, testes, and ovaries of the cockroach Periplaneta americana using high performance liquid chromatography with electrochemical detection. 5-Hydroxytryptamine was demonstrated in the frontal ganglion, corpora cardiaca, corpora allata, and nerves of the suboesophageal ganglion but not in the gut, testes, ovaries, or nerves of the thoracic ganglia. These results quantitatively confirm immunohistochemical studies of 5-hydroxytryptamine in neurohaemal and nonneuronal tissues of the cockroach. Dopamine was found in all neurohaemal and nervous tissue examined. Dopamine was also found at low levels in the rectum. Tryptophan was found in all tissues examined.

scholarly journals A Novel Head Capsule Labial Gland Lobe in the Black Field Cricket (Orthoptera: Gryllidae)

2020 ◽  
Vol 20 (4) ◽  
Author(s):  
Monique Campos Pereira ◽  
Paul D Cooper
Keyword(s):  
Transport System ◽  
Flow Rate ◽  
Head Capsule ◽  
Corpora Allata ◽  
Field Cricket ◽  
Labial Gland ◽  
Main Duct ◽  
Thoracic Region ◽  
Adipokinetic Hormone ◽  
Black Field

Abstract We describe a pair of labial gland lobes on either side of the retrocerebral complex in the head of the Australian black field cricket, Teleogryllus commodus Walker. As the retrocerebral complex includes the corpora cardiaca and corpora allata, hormones secreted by these glands can be absorbed by these lobes. These lobes of the labial gland are connected to the thoracic lobes via a relatively long duct that enters the main duct draining the thoracic lobes. Measurement of the flow rate of dye from head to thorax in the ducts is rapid, suggesting that these glands may serve as a transport system into the thoracic region. Both serotonin and adipokinetic hormone are shown to be present in the lobes near the retrocerebral complex and the ducts of the thoracic lobes, but whether this connection between the head and thorax acts as a hormone transporter is still unclear.

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