Effect of 20-hydroxyecdysone on neurosecretory cell activity in femaleHyalomma dromedarii synganglion (Acari: Ixodidae)

1988 ◽  
Vol 5 (1-2) ◽  
pp. 101-119 ◽  
Author(s):  
Galila M. Khalil ◽  
Aleya S. Marzouk ◽  
Zakia E. A. Darwish
Keyword(s):  
Neurosecretory Cell ◽  
Cell Activity

An Autoradiographic Study of Neurosecretory Cell Activity of Allatectomized Females of the Grasshopper, Melanoplus sanguinipes (Fab.)

1975 ◽  
Vol 30 (7-8) ◽  
pp. 511-515
Author(s):  
G. S. Dogra
Keyword(s):  
Neurosecretory Cell ◽  
Cell Activity ◽  
Secretory Activity ◽  
Autoradiographic Study ◽  
Neurosecretory Cells ◽  
Corpus Allatum ◽  
High Uptake ◽  
Melanoplus Sanguinipes ◽  
Gradual Accumulation ◽  
Activity Cycles

Abstract Neurosecretory cell activity was studied autoradiographically in the allatectomized females of Melanoplus sanguinipes on every alternate day and in the normal control females on every fourth day for a period of 34 days. Experimental females exhibited five activity cycles against the two recorded by the control females. There was a comparatively high uptake of [3H] cystine by the neurosecretory cells of the experimental females on a particular day. During the first 12 days there was no accumulation of stainable colloid in their system. By the 24th day there was a slow and gradual accumulation of the colloids in the cells and their tracts so that on 34th day the system was well loaded with these colloids. In control females there was good accumulation of the stainable material during the first 12 days and then it declined so that 20 day old females had very little material in their system. This was followed by a massive accumulation of the stained colloids by 32nd day. The uptake of [3H] uridine was very high in the nerve-regenerate of the experimental females, and there were six cycles of secretory activity during the period of experimentation. The corpus allatum of control females, like their neurosecretory cells, exhibited only two activity cycles. Since the activity of the neurosecretory cells parallels the RNA synthesis in the nerve-regenerate, it is postulated that the neurosecretory cells produce factors for nerve-regeneration. On the basis of high uptake of isotopes by the neurosecretory cells of those allatectomized females in which the oocytes were mature it is suggested that the hormone (s) produced by the neurosecretory cells are perhaps responsible for oocyte maturation in these allatectomized females.

Regulatory Influences on Crustacean Neurosecretory Cells

Physiology ◽  
1997 ◽  
Vol 12 (1) ◽  
pp. 16-21
Author(s):  
U Garcia ◽  
H Arechiga
Keyword(s):  
Neurosecretory Cell ◽  
Cell Activity ◽  
Neurosecretory Cells ◽  
Cellular Interactions ◽  
Ionic Mechanisms ◽  
Secretory Neurons ◽  
Endogenous Activity ◽  
New Evidence

During the last decade, new evidence has been produced on the subtle mechanisms by which invertebrate neurosecretory cell activity is regulated. Multiple synaptic and humoral mechanisms regulate the endogenous activity of secretory neurons. Specific cellular interactions and ionic mechanisms have been disclosed, and new insights are now available on the integrative features of invertebrate neurosecretory systems.

Changes in Neurosecretory Cell Activity in Female Argas (Argas) hermanni (Acari: Argasidae)

1990 ◽  
Vol 27 (6) ◽  
pp. 975-981 ◽  
Author(s):  
Nawal M. Shanbaky ◽  
Ashraf El-Said ◽  
Nadia Helmy
Keyword(s):  
Neurosecretory Cell ◽  
Cell Activity

scholarly journals Relationship Between Gonad Condition and Neurosecretory Cell Activity in the Green-Lipped Mussel, Perna canaliculus

2014 ◽  
Vol 18 (2) ◽  
pp. 135-148 ◽  
Author(s):  
S Mahmud ◽  
PV Mladenov ◽  
SC Chakraborty ◽  
MAR Faruk
Keyword(s):  
Neurosecretory Cell ◽  
Cell Activity ◽  
Gonad Development ◽  
Cell Types ◽  
Staining Intensity ◽  
Neurosecretory Cells ◽  
Gonad Maturation ◽  
Colour Intensity ◽  
Perna Canaliculus ◽  
The Relationship

The relationship between the activity of neurosecretory cells and gonad development of Perna canaliculus was investigated. The variation in staining intensity of the neurosecretory cells in different ganglia was evaluated. Changes in staining intensity of neurosecretory cells (NSC) were correlated with gonad development. The variation in colour intensity (CI) resulted from differences in the amount of secretory materials within the NSCs. The neurosecretory cell types A and B showed a similar pattern of staining intensity, and showed correlation with gametogenesis and spawning. At the beginning of gonad development, these cells possessed very few granules and the number of granules in the cells increased with gonad maturation. The staining intensity decreased in A and B- cells just after spawning. Cell types C and D did not show any substantial changes in colour intensity with gonad changes.DOI: http://dx.doi.org/10.3329/pa.v18i2.18169 Progress. Agric. 18(2): 135 - 148, 2007

Opioid modulation of magnocellular neurosecretory cell activity

2000 ◽  
Vol 36 (2) ◽  
pp. 97-120 ◽  
Author(s):  
Colin H Brown ◽  
John A Russell ◽  
Gareth Leng
Keyword(s):  
Neurosecretory Cell ◽  
Cell Activity

571: Importance of the Intracrine Metabolism of Adrenal Androgens in Androgen Dependent Prostate Cancer Cell Activity

2005 ◽  
Vol 173 (4S) ◽  
pp. 156-156
Author(s):  
Kazuya Suzuki ◽  
Tsutomu Nishiyama ◽  
Noboru Hara ◽  
Vladimir Bilim ◽  
Kazutoshi Yamana ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Cancer Cell ◽  
Prostate Cancer Cell ◽  
Cell Activity ◽  
Adrenal Androgens
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