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Infralimbic

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https://www.readbyqxmd.com/read/29134962/role-of-glutamatergic-projections-from-the-ventral-ca1-to-infralimbic-cortex-in-context-induced-reinstatement-of-heroin-seeking
#1
Na Wang, Feifei Ge, Cailian Cui, Yijing Li, Xiaowei Sun, Linlin Sun, Xinjuan Wang, Shuli Liu, Haolin Zhang, Yan Liu, Meng Jia, Mingda Yang
The prelimbic cortex (PL) and infralimbic cortex (IL) play a role in context-induced reinstatement of heroin seeking in an animal model of drug relapse. Both the PL and IL receive direct glutamatergic projections from the ventral CA1 (vCA1), which is also involved in context-induced reinstatement of cocaine and heroin seeking. Here we studied the role of vCA1-PL and vCA1-IL projections in context-induced reinstatement of heroin seeking by using electrophysiological, neuropharmacological, chemogenetic and molecular methods...
November 14, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29120948/parvalbumin-containing-gaba-cells-and-schizophrenia-experimental-model-based-on-targeted-gene-delivery-through-adeno-associated-viruses
#2
Marta U Woloszynowska-Fraser, Peer Wulff, Gernot Riedel
Understanding the contribution of transmitter systems in behavioural pharmacology has a long tradition. Multiple techniques such as transmitter-specific lesions, and also localized administration of pharmacological toxins including agonists and antagonists of selected receptors have been applied. More recently, modern genetic tools have permitted cell-type selective interferences, for example by expression of light-sensitive channels followed by optogenetic stimulation in behaviourally meaningful settings or by engineered channels termed DREADDS that respond to peripherally administered drugs...
December 2017: Behavioural Pharmacology
https://www.readbyqxmd.com/read/29081007/interplay-of-prefrontal-cortex-and-amygdala-during-extinction-of-drug-seeking
#3
Valeria Oliva, Emilio Cartoni, Emanuele Claudio Latagliata, Stefano Puglisi-Allegra, Gianluca Baldassarre
Extinction of Pavlovian conditioning is a complex process that involves brain regions such as the medial prefrontal cortex (mPFC), the amygdala and the locus coeruleus. In particular, noradrenaline (NA) coming from the locus coeruleus has been recently shown to play a different role in two subregions of the mPFC, the prelimbic (PL) and the infralimbic (IL) regions. How these regions interact in conditioning and subsequent extinction is an open issue. We studied these processes using two approaches: computational modelling and NA manipulation in a conditioned place preference paradigm (CPP) in mice...
October 28, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/29061508/endogenous-glutamate-within-the-prelimbic-and-infralimbic-cortices-regulates-the-incubation-of-cocaine-seeking-in-rats
#4
Christina B Shin, Taylor J Templeton, Alvin S Chiu, Jennifer Kim, Ellen S Gable, Philip A Vieira, Tod E Kippin, Karen K Szumlinski
The incubation of cue-reinforced cocaine-seeking coincides with increased extracellular glutamate within the ventromedial prefrontal cortex (vmPFC). The vmPFC is comprised of two subregions that oppositely regulate drug-seeking, with infralimbic (IL) activity inhibiting, and prelimibic (PL) activity facilitating, drug-seeking. Thus, we hypothesized that increasing and decreasing endogenous glutamate within the IL would attenuate and potentiate, respectively, cue-reinforced drug-seeking behavior, with the converse effects observed upon manipulations of endogenous glutamate within the PL...
October 20, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/29052618/a-role-for-prefrontal-cortical-nmda-receptors-in-murine-alcohol-heightened-aggression
#5
Emily L Newman, Miho Terunuma, Tiffany Wang, Nishani Hewage, Matthew B Bicakci, Stephen J Moss, Joseph F DeBold, Klaus A Miczek
Alcohol is associated with nearly half of all violent crimes committed in the United States; yet, a potential neural basis for this type of pathological aggression remains elusive. Alcohol may act on NMDA receptors (NMDARs) within cortical circuits to impede processing and to promote aggression. Here, male mice were characterized as alcohol-heightened (AHAs) or alcohol non-heightened aggressors (ANAs) during resident-intruder confrontations after self-administering 1.0 g/kg alcohol (6% w/v) or water. Alcohol produced a pathological-like pattern of aggression in AHAs; these mice shifted their bites to more vulnerable locations on the body of a submissive animal, including the anterior back and ventrum after consuming alcohol...
October 20, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29045570/optogenetic-activation-of-the-infralimbic-cortex-suppresses-the-return-of-appetitive-pavlovian-conditioned-responding-following-extinction
#6
Franz R Villaruel, Franca Lacroix, Christian Sanio, Daniel W Sparks, C Andrew Chapman, Nadia Chaudhri
The infralimbic medial prefrontal cortex (IL) is important for suppressing learned behavior after extinction, but whether this function extends to responses acquired through appetitive Pavlovian conditioning is unclear. We trained male, Long-Evans rats to associate a white-noise conditional stimulus (CS; 10 s; 14 presentations per session) with 10% liquid sucrose (0.2 mL per CS presentation), and recorded entries into the fluid port during the CS. The CS was presented without sucrose in subsequent extinction and test sessions...
October 17, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/29033796/laminar-and-cellular-distribution-of-monoamine-receptors-in-rat-medial-prefrontal-cortex
#7
REVIEW
Noemí Santana, Francesc Artigas
The prefrontal cortex (PFC) is deeply involved in higher brain functions, many of which are altered in psychiatric conditions. The PFC exerts a top-down control of most cortical and subcortical areas through descending pathways and is densely innervated by axons emerging from the brainstem monoamine cell groups, namely, the dorsal and median raphe nuclei (DR and MnR, respectively), the ventral tegmental area and the locus coeruleus (LC). In turn, the activity of these cell groups is tightly controlled by afferent pathways arising from layer V PFC pyramidal neurons...
2017: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/29030297/impaired-extinction-of-cued-fear-memory-and-abnormal-dendritic-morphology-in-the-prelimbic-and-infralimbic-cortices-in-vpac2-receptor-vipr2-deficient-mice
#8
Yukio Ago, Atsuko Hayata-Takano, Takuya Kawanai, Ryosuke Yamauchi, Shuto Takeuchi, Jesse D Cushman, Abha K Rajbhandari, Michael S Fanselow, Hitoshi Hashimoto, James A Waschek
The structurally related neuropeptides vasoactive intestinal peptide (VIP) and pituitary adenylate cyclase-activating polypeptide (PACAP) have been implicated in stress regulation and learning and memory. Several bodies of research have shown the impact of the PACAP specific receptor PAC1 on fear memory, but the roles of other PACAP receptors in regulating fear stress responses remain to be elucidated. Here we aimed to investigate the effects of genetic deletion of VIPR2 encoding the VPAC2 receptor, which binds both VIP and PACAP, on fear-related memory and on dendritic morphology in the brain regions of the fear circuitry...
October 10, 2017: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/29026986/inter-individual-differences-in-decision-making-flexible-and-goal-directed-behaviors-novel-insights-within-the-prefronto-striatal-networks
#9
Aurélie Fitoussi, Prisca Renault, Catherine Le Moine, Etienne Coutureau, Martine Cador, Françoise Dellu-Hagedorn
Inflexible behavior is a hallmark of several decision-making-related disorders such as ADHD and addiction. As in humans, a subset of healthy rats makes poor decisions and prefers immediate larger rewards despite suffering large losses in a rat gambling task (RGT). They also display a combination of traits reminiscent of addiction, notably inflexible behavior and perseverative responses. The goal of the present work was twofold: (1) to elucidate if behavioral inflexibility of poor decision-makers could be related to a lower quality of goal-directed behavior (action-outcome associations); (2) to uncover the neural basis of inter-individual differences in goal-directed behavior...
October 12, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/29016806/differential-patterns-of-subcortical-activity-evoked-by-glial-glt-1-blockade-in-prelimbic-and-infralimbic-cortex-relationship-to-antidepressant-like-effects-in-rats
#10
Júlia Gasull-Camós, Maria Luisa Soto-Montenegro, Marta Casquero-Veiga, Manuel Desco, Francesc Artigas, Anna Castañé
Background: Glutamatergic neurotransmission has emerged as a novel target in antidepressant drug development, with a critical role of the ventral anterior cingulate cortex. We recently reported that blockade of the astrocytic glutamate transporter GLT-1 with dihydrokainic acid in infralimbic cortex (rodent equivalent of ventral anterior cingulate cortex), but not in the adjacent prelimbic cortex, evoked robust antidepressant-like effects through α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor activation and increased serotonin release...
August 3, 2017: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28990593/riluzole-impairs-cocaine-reinstatement-and-restores-adaptations-in-intrinsic-excitability-and-glt-1-expression
#11
Marian T Sepulveda-Orengo, Kati L Healey, Ronald Kim, Alyson C Auriemma, Jennifer Rojas, Nicholas Woronoff, Rachel Hyppolite, Kathryn J Reissner
Adaptations in glutamate signaling within the brain's reward circuitry are observed following withdrawal from several abused drugs, including cocaine. These include changes in intrinsic cellular excitability, glutamate release, and glutamate uptake. Pharmacological or optogenetic reversal of these adaptations have been shown to reduce measures of cocaine craving and seeking, raising the hypothesis that regulation of glutamatergic signaling represents a viable target for the treatment of substance use disorders...
October 9, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28978762/layer-and-subregion-specific-differences-in-the-neurophysiological-properties-of-rat-medial-prefrontal-cortex-pyramidal-neurons
#12
Chenghui Song, James R Moyer
Medial prefrontal cortex (mPFC) is critical for the expression of long term conditioned fear. However, the neural circuits involving fear memory acquisition and retrieval are still unclear. Two subregions within mPFC that have received a lot of attention are the prelimbic (PL) and infralimbic (IL) cortices (e.g., Santini et al. 2008; Song et al. 2015). Interestingly, PL and IL may play distinct roles during fear memory acquisition and retrieval but the underlying mechanism is poorly understood. One possibility is that the intrinsic membrane properties differ between these subregions...
October 4, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28941995/neuropeptide-s-overcomes-short-term-memory-deficit-induced-by-sleep-restriction-by-increasing-prefrontal-cortex-activity
#13
Julien Thomasson, Frédéric Canini, Betty Poly-Thomasson, Marion Trousselard, Sylvie Granon, Frédéric Chauveau
Sleep restriction (SR) impairs short term memory (STM) that might be related to different processes. Neuropeptide S (NPS), an endogenous neuropeptide that improves short term memory, activates arousal and decreases anxiety is likely to counteract the SR-induced impairment of STM. The objective of the present study was to find common cerebral pathways in sleep restriction and NPS action in order to ultimately antagonize SR effect on memory. The STM was assessed using a spontaneous spatial alternation task in a T-maze...
September 20, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28938481/vesicular-glutamate-transporter-1-knockdown-in-infralimbic-prefrontal-cortex-augments-neuroendocrine-responses-to-chronic-stress-in-male-rats
#14
Brent Myers, Jessica M McKlveen, Rachel Morano, Yvonne M Ulrich-Lai, Matia B Solomon, Steven P Wilson, James P Herman
Chronic stress-associated pathologies frequently associate with alterations in the structure and activity of the medial prefrontal cortex (mPFC). However, the influence of infralimbic cortex (IL) projection neurons on hypothalamic-pituitary-adrenal (HPA) axis activity is unknown, as is the involvement of these cells in chronic stress-induced endocrine alterations. In the current study, a lentiviral-packaged vector coding for a small interfering RNA (siRNA) targeting vesicular glutamate transporter (vGluT) 1 messenger RNA (mRNA) was microinjected into the IL of male rats...
October 1, 2017: Endocrinology
https://www.readbyqxmd.com/read/28924693/phosphodiesterase-4-inhibition-affects-both-the-direct-and-indirect-pathway-an-electrophysiological-study-examining-the-tri-phasic-response-in-the-substantia-nigra-pars-reticulata
#15
P R A Heckman, J V Schweimer, T Sharp, J Prickaerts, A Blokland
Fronto-striatal circuits constitute the neurobiological basis of many neuropsychiatric disorders. Part of the intracellular signaling within these circuits, including its dopaminergic modulation, is regulated by the cyclic adenosine monophosphate (cAMP)/protein kinase A (PKA) signaling cascade. Based on the overall expression in human fronto-striatal circuitry, we tested the effects of a cAMP selective phosphodiesterase 4 (PDE4) inhibitor on the tri-phasic response in the dorsomedial substantia nigra pars reticulata (SNr) upon stimulation of the infralimbic cortex in rats...
September 18, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/28893650/adversity-in-early-adolescence-promotes-an-enduring-anxious-phenotype-and-increases-serotonergic-innervation-of-the-infralimbic-medial-prefrontal-cortex
#16
Cindy S Tao, Prateek Dhamija, Linda Booij, Janet L Menard
Stress during early development produces lasting effects on psychopathological outcomes. We analysed the impact of prior intermittent, physical stress (IPS) during early adolescence (PD 22-33) on anxiety-like behaviour of female rats in adulthood. After behavioural testing, we used immunohistochemistry for the 5-HT transporter (SERT) to evaluate 5-HT innervation profiles in the medial prefrontal cortex (mPFC) and ventral hippocampus (VH). Administration of IPS (i.e., water immersion, elevated platform, foot shock) in early adolescence increased rats' anxiety-like behaviour in the elevated plus-maze but had no effects in the shock-probe burying test...
November 19, 2017: Neuroscience
https://www.readbyqxmd.com/read/28891509/role-of-the-medullary-lateral-tegmental-field-in-sympathetic-control
#17
Michael George Zaki Ghali
The sympathetic nervous system maintains and regulates arterial pressure and tissue perfusion, via control of cardiac output and vasomotor tone. Sympatho-vascular-mediated increases in blood pressure are effected by arterioloconstriction, which causes an increase in afterload, and/or venoconstriction, which increases venous return, left ventricular preload, and consequently, the force of cardiac contraction via Frank-Starling mechanisms; withdrawal of sympathetic drive elicits reciprocal effects. Spinalization reduces mammalian arterial pressure to 40-50 mm Hg consequent to the elimination of descending medullary pre-sympathetic bulbospinal drive to preganglionic sympathetic fibers in the intermediolateral cell column of the spinal cord...
2017: Journal of Integrative Neuroscience
https://www.readbyqxmd.com/read/28890149/distinct-roles-for-the-deacetylase-domain-of-hdac3-in-the-hippocampus-and-medial-prefrontal-cortex-in-the-formation-and-extinction-of-memory
#18
Yasaman Alaghband, Janine L Kwapis, Alberto J López, André O White, Osasumwen V Aimiuwu, Amni Al-Kachak, Kasuni K Bodinayake, Nicole C Oparaugo, Richard Dang, Mariam Astarabadi, Dina P Matheos, Marcelo A Wood
Histone deacetylases (HDACs) are chromatin modifying enzymes that have been implicated as powerful negative regulators of memory processes. HDAC3has been shown to play a pivotal role in long-term memory for object location as well as the extinction of cocaine-associated memory, but it is unclear whether this function depends on the deacetylase domain of HDAC3. Here, we tested whether the deacetylase domain of HDAC3has a role in object location memory formation as well as the formation and extinction of cocaine-associated memories...
September 8, 2017: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/28862251/prefrontal-cortex-deep-brain-stimulation-improves-fear-and-anxiety-like-behaviour-and-reduces-basolateral-amygdala-activity-in-a-preclinical-model-of-post-traumatic-stress-disorder
#19
Roman Reznikov, Francis Bambico, Mustansir Diwan, Roger J Raymond, Mina G Nashed, José N Nobrega, Clement Hamani
Deep brain stimulation (DBS) is being investigated for a number of psychiatric indications, including post-traumatic stress disorder (PTSD). Preclinical studies continue to be a cornerstone for the development of new DBS applications. We investigate whether DBS delivered to the infralimbic cortex (IL), a region involved in mechanisms of stress resiliency, may counter behavioural abnormalities in rats that present persistent extinction deficits and long-term anxiety after exposure to fear conditioning. Rats undergoing fear conditioning/extinction were segregated into weak- and strong-extinction groups (WE >70% or SE <30% of freezing during extinction)...
September 1, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28852400/long-term-acupuncture-treatment-has-a-multi-targeting-regulation-on-multiple-brain-regions-in-rats-with-alzheimer-s-disease-a-positron-emission-tomography-study
#20
Yang-Jia Lu, Xiao-Wen Cai, Gui-Feng Zhang, Yong Huang, Chun-Zhi Tang, Bao-Ci Shan, Shao-Yang Cui, Jun-Qi Chen, Shan-Shan Qu, Zheng Zhong, Xin-Sheng Lai, Genevieve Zara Steiner
The acute effect of acupuncture on Alzheimer's disease, i.e., on brain activation during treatment, has been reported. However, the effect of long-term acupuncture on brain activation in Alzheimer's disease is unclear. Therefore, in this study, we performed long-term needling at Zusanli (ST36) or a sham point (1.5 mm lateral to ST36) in a rat Alzheimer's disease model, for 30 minutes, once per day, for 30 days. The rats underwent (18)F-fluorodeoxyglucose positron emission tomography scanning. Positron emission tomography images were processed with SPM2...
July 2017: Neural Regeneration Research
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