scholarly journals Drosophila Larval Light Avoidance is Negatively Regulated by Temperature Through Two Pairs of Central Brain Neurons

2020 ◽  
Author(s):  
Jie Wang ◽  
Weiqiao Zhao ◽  
Qianhui Zhao ◽  
Jinrun Zhou ◽  
Xinhang Li ◽  
...  
Keyword(s):  
Brain Neurons ◽  
Central Brain ◽  
Light Avoidance

scholarly journals Drosophila larval light avoidance is negatively regulated by temperature through two pairs of central brain neurons

2020 ◽  
Author(s):  
Jie Wang ◽  
Weiqiao Zhao ◽  
Qianhui Zhao ◽  
Jinrun Zhou ◽  
Xinhang Li ◽  
...  
Keyword(s):  
Avoidance Behavior ◽  
Neural Mechanism ◽  
Cool Temperature ◽  
Warm Temperature ◽  
Neural Basis ◽  
Brain Neurons ◽  
Transformation Pathway ◽  
Central Brain ◽  
External Conditions ◽  
Light Avoidance

AbstractAnimal’s innate avoidance behavior is crucial for its survival. It subjects to modulation by environmental conditions in addition to the commanding sensorimotor transformation pathway. Although much has been known about the commanding neural basis, relatively less is known about how innate avoidance behavior is shaped by external conditions. Here in this paper, we report that Drosophila larvae showed stronger light avoidance at lower temperatures than at higher temperatures. Such negative regulation of light avoidance by temperature was abolished by blocking two pairs of central brain neurons, ACLPR60F09 neurons, that were responsive to both light and temperature change, including cooling and warming. ACLPR60F09 neurons could be excited by pdf-LaN neurons in the visual pathway. On the downstream side, they could inhibit the CLPNR82B09 neurons that command light induced reorientation behavior. Compared with at warm temperature, ACLPR60F09 neurons’ response to light was decreased at cool temperature so that the inhibition on CLPNR82B09 neurons was relieved and the light induced avoidance was enhanced. Our result proposed a neural mechanism underlying cross-modal modulation of animal innate avoidance behavior.

scholarly journals Central Brain Neurons Expressing doublesex Regulate Female Receptivity in Drosophila

Neuron ◽  
2014 ◽  
Vol 83 (1) ◽  
pp. 149-163 ◽  
Author(s):  
Chuan Zhou ◽  
Yufeng Pan ◽  
Carmen C. Robinett ◽  
Geoffrey W. Meissner ◽  
Bruce S. Baker
Keyword(s):  
Female Receptivity ◽  
Brain Neurons ◽  
Central Brain

scholarly journals High-quality brain perfusion SPECT images may be achieved with a high-speed recording using 360° CZT camera

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Manon Bordonne ◽  
Mohammad B. Chawki ◽  
Pierre-Yves Marie ◽  
Timothée Zaragori ◽  
Véronique Roch ◽  
...  
Keyword(s):  
Image Quality ◽  
High Speed ◽  
Brain Perfusion ◽  
Fold Increase ◽  
Brain Structures ◽  
Czt Camera ◽  
Recording Time ◽  
Brain Perfusion Spect ◽  
Central Brain ◽  
Perfusion Spect

Abstract Objective The aim of this study was to compare brain perfusion SPECT obtained from a 360° CZT and a conventional Anger camera. Methods The 360° CZT camera utilizing a brain configuration, with 12 detectors surrounding the head, was compared to a 2-head Anger camera for count sensitivity and image quality on 30-min SPECT recordings from a brain phantom and from 99mTc-HMPAO brain perfusion in 2 groups of 21 patients investigated with the CZT and Anger cameras, respectively. Image reconstruction was adjusted according to image contrast for each camera. Results The CZT camera provided more than 2-fold increase in count sensitivity, as compared with the Anger camera, as well as (1) lower sharpness indexes, giving evidence of higher spatial resolution, for both peripheral/central brain structures, with respective median values of 5.2%/3.7% versus 2.4%/1.9% for CZT and Anger camera respectively in patients (p < 0.01), and 8.0%/6.9% versus 6.2%/3.7% on phantom; and (2) higher gray/white matter contrast on peripheral/central structures, with respective ratio median values of 1.56/1.35 versus 1.11/1.20 for CZT and Anger camera respectively in patients (p < 0.05), and 2.57/2.17 versus 1.40/1.12 on phantom; and (3) no change in noise level. Image quality, scored visually by experienced physicians, was also significantly higher on CZT than on the Anger camera (+ 80%, p < 0.01), and all these results were unchanged on the CZT images obtained with only a 15 min recording time. Conclusion The 360° CZT camera provides brain perfusion images of much higher quality than a conventional Anger camera, even with high-speed recordings, thus demonstrating the potential for repositioning brain perfusion SPECT to the forefront of brain imaging.

Surface Phosphorylation by Ecto-Protein Kinase C in Brain Neurons: A Target for Alzheimer's β-Amyloid Peptides

2002 ◽  
Vol 65 (5) ◽  
pp. 2022-2030 ◽  
Author(s):  
Michael V. Hogan ◽  
Zofia Pawlowska ◽  
Hui-Ai Yang ◽  
Elizabeth Kornecki ◽  
Yigal H. Ehrlich
Keyword(s):  
Protein Kinase C ◽  
Protein Kinase ◽  
Brain Neurons ◽  
Amyloid Peptides ◽  
Kinase C ◽  
Β Amyloid

Effects of Cerebrolysin on the outgrowth and protection of processes of cultured brain neurons

2001 ◽  
Vol 108 (5) ◽  
pp. 581-592 ◽  
Author(s):  
M. Hartbauer ◽  
B. Hutter-Paier ◽  
M. Windisch
Keyword(s):  
Brain Neurons

CPP32/CASPASE-3-like proteases in hypoxia-induced apoptosis in developing brain neurons

1999 ◽  
Vol 71 (2) ◽  
pp. 225-237 ◽  
Author(s):  
Carine Bossenmeyer-Pourié ◽  
Violette Koziel ◽  
Jean-Luc Daval
Keyword(s):  
Caspase 3 ◽  
Developing Brain ◽  
Brain Neurons ◽  
Induced Apoptosis
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