scholarly journals Intravenous Ethanol Administration and Operant Self‐Administration Alter Extracellular Norepinephrine Concentration in the Mesocorticolimbic Systems of Male Long Evans Rats

2020 ◽  
Vol 44 (8) ◽  
pp. 1529-1539
Author(s):  
Saul Jaime ◽  
Ashley A. Vena ◽  
Rueben A. Gonzales

2007 ◽  
Vol 197 (1) ◽  
pp. 45-58 ◽  
Author(s):  
Megan J. Shram ◽  
Zhaoxia Li ◽  
Anh D. Lê


2010 ◽  
Vol 35 (7) ◽  
pp. 1453-1463 ◽  
Author(s):  
Jeffrey A Simms ◽  
Jade J Bito-Onon ◽  
Susmita Chatterjee ◽  
Selena E Bartlett


2017 ◽  
Vol 25 (4) ◽  
pp. 242-248 ◽  
Author(s):  
Alison G. P. Wakeford ◽  
Bradley B. Wetzell ◽  
Rebecca L. Pomfrey ◽  
Matthew M. Clasen ◽  
William W. Taylor ◽  
...  






2020 ◽  
Author(s):  
Laura C. Ornelas ◽  
Ryan E. Tyler ◽  
Preethi Irukulapati ◽  
Sudheesha Paladugu ◽  
Joyce Besheer

AbstractPost-traumatic stress disorder (PTSD) and alcohol use disorder (AUD) are highly comorbid. Additionally, individual differences in response to stress suggest resilient and susceptible populations. The current study exposed male and female Long Evans rats to the synthetically produced predator odor 2,5-dihydro-2,4,5-trimethylthiazoline (TMT) to examine individual differences in stress-reactive behaviors (digging and immobility) and whether these differences could predict lasting consequences of TMT and increases in alcohol drinking. Male and female Long Evans rats were trained on operant alcohol self-administration. After 9 sessions, rats underwent exposure to TMT or water (Control) in a distinct context. 6 days after TMT exposure, rats underwent re-exposure to the TMT-paired context (without TMT), and a series of behavioral assessments (acoustic startle, zero maze, light/dark box), after which rats resumed alcohol self-administration. Rats were divided into two TMT-subgroups using a ratio of digging and immobility behavior during TMT exposure: TMT-subgroup 1 (low digging/immobility ratio) and TMT-subgroup 2 (high digging/immobility ratio). Digging/immobility ratio scores predicted elevated corticosterone levels during TMT exposure and reactivity during context re-exposure in males and females (TMT-subgroup 2), as well as elevated corticosterone levels after context re-exposure and hyperarousal behavior in females (TMT-subgroup 1). Furthermore, TMT stress reactivity predicted increases in alcohol self-administration, specifically in females. These data show that stress-reactivity can predict lasting behavioral changes which may lead to a better understanding of increases in alcohol drinking following stress in females and that individual differences in stress-reactive behaviors using TMT may be helpful to understand resilience/susceptibility to the lasting consequences of stress.HighlightsExposure to the predator odor TMT produces distinct behavioral phenotypes in male and female ratsMale and female high stress reactive rats show enhanced reactivity to the TMT-paired contextStress-reactivity during TMT predicts increases in alcohol self-administration, in femalesStress-reactivity may help to understand resilience/susceptibility and impact on alcohol drinking



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