Circadian changes in melatonin in the nervous system and hemolymph of the cabbage looper moth, Trichoplusia ni

1995 ◽  
Vol 176 (6) ◽  
pp. 761-771 ◽  
Author(s):  
C. E. Linn ◽  
K. R. Poole ◽  
W. L. Roelofs ◽  
W. -Q. Wu
2002 ◽  
Vol 205 (17) ◽  
pp. 2605-2613 ◽  
Author(s):  
Richard B. Gardiner ◽  
Kyrre Ullensvang ◽  
Niels C. Danbolt ◽  
Stanley Caveney ◽  
B. Cameron Donly

SUMMARYGlutamate functions as a neurotransmitter in the central nervous system(CNS) and neuromuscular junctions in insects. High-affinity glutamate transporters are responsible for keeping the resting levels of excitatory amino acids below the synaptic activation threshold by removing them from the extracellular fluid, thereby preventing them from reaching toxic levels. Peptides representing the N- and C-terminal regions of a glutamate transporter cloned from the cabbage looper caterpillar (Trichoplusia ni) were synthesized and used to generate polyclonal antibodies. The antibodies produced immunohistochemical staining in both muscular and nervous system T. ni tissues. Neuromuscular junctions in the skeletal muscles produced the most intense labelling, but no visceral muscle or sensory nerves were labelled. In the CNS, the neuropile of the ganglia, but not the connectives, gave a diffuse staining. Electron microscopical examination of ganglia and neuromuscular junctions showed that the plasma membrane of glial cells, but not that of neurons was labelled, in agreement with the notion that most of the glutamate uptake sites in this insect are in glial cells.


1979 ◽  
Vol 57 (1) ◽  
pp. 220-236 ◽  
Author(s):  
Jean Percy

The sex-pheromone-producing gland in female Trichoplusia ni (Hübner) is a modified intersegmental membrane and the gland cells are ductless. Lipid spheres are located throughout gland cells and vary both in number and size relative to the age of the female. Most of the lipid is surrounded by oval to elongate distensions of smooth tubular endoplasmic reticulum which contain the enzyme catalase and are thus microperoxisomes. Lipid spheres evert the apical plasma membrane between microvilli, move away from the gland cells, and are stored in the cuticle as discrete lipid deposits. These deposits, in turn, move to the surface of the gland by tubular structures that differ from epicuticular filaments.


1992 ◽  
Vol 18 (5) ◽  
pp. 737-748 ◽  
Author(s):  
Charles Linn ◽  
Wendell Roelofs ◽  
Wei-Chuan Sun ◽  
Glenn D. Prestwich

1999 ◽  
Vol 29 (5) ◽  
pp. 435-443 ◽  
Author(s):  
Weitian Liu ◽  
Peter W.K. Ma ◽  
Patricia Marsella-Herrick ◽  
Claire-Lise Rosenfield ◽  
Douglas C. Knipple ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document