scholarly journals The role of prefrontal–subcortical circuitry in negative bias in anxiety: Translational, developmental and treatment perspectives

2018 ◽  
Vol 2 ◽  
pp. 239821281877422 ◽  
Author(s):  
Christina O. Carlisi ◽  
Oliver J. Robinson
Keyword(s):  
Anxiety Disorders ◽  
Psychological Symptom ◽  
Developmental Trajectory ◽  
Reciprocal Relationship ◽  
Negative Bias ◽  
Psychological Treatments ◽  
Brain Circuitry ◽  
Affective Bias ◽  
Developed World

Anxiety disorders are the most common cause of mental ill health in the developed world, but our understanding of symptoms and treatments is not presently grounded in knowledge of the underlying neurobiological mechanisms. In this review, we discuss accumulating work that points to a role for prefrontal–subcortical brain circuitry in driving a core psychological symptom of anxiety disorders – negative affective bias. Specifically, we point to converging work across humans and animal models, suggesting a reciprocal relationship between dorsal and ventral prefrontal–amygdala circuits in promoting and inhibiting negative bias, respectively. We discuss how the developmental trajectory of these circuits may lead to the onset of anxiety during adolescence and, moreover, how effective pharmacological and psychological treatments may serve to shift the balance of activity within this circuitry to ameliorate negative bias symptoms. Together, these findings may bring us closer to a mechanistic, neurobiological understanding of anxiety disorders and their treatment.

scholarly journals Does microglial dysfunction play a role in autism and Rett syndrome?

2011 ◽  
Vol 7 (1) ◽  
pp. 85-97 ◽  
Author(s):  
Izumi Maezawa ◽  
Marco Calafiore ◽  
Heike Wulff ◽  
Lee-Way Jin
Keyword(s):  
Social Interactions ◽  
Rett Syndrome ◽  
Autism Spectrum ◽  
Developmental Trajectory ◽  
Repetitive Behaviors ◽  
Environmental Toxins ◽  
Communication Difficulties ◽  
Brain Circuitry ◽  
Spectrum Disorders

Autism spectrum disorders (ASDs) including classic autism is a group of complex developmental disabilities with core deficits of impaired social interactions, communication difficulties and repetitive behaviors. Although the neurobiology of ASDs has attracted much attention in the last two decades, the role of microglia has been ignored. Existing data are focused on their recognized role in neuroinflammation, which only covers a small part of the pathological repertoire of microglia. This review highlights recent findings on the broader roles of microglia, including their active surveillance of brain microenvironments and regulation of synaptic connectivity, maturation of brain circuitry and neurogenesis. Emerging evidence suggests that microglia respond to pre- and postnatal environmental stimuli through epigenetic interface to change gene expression, thus acting as effectors of experience-dependent synaptic plasticity. Impairments of these microglial functions could substantially contribute to several major etiological factors of autism, such as environmental toxins and cortical underconnectivity. Our recent study on Rett syndrome, a syndromic autistic disorder, provides an example that intrinsic microglial dysfunction due to genetic and epigenetic aberrations could detrimentally affect the developmental trajectory without evoking neuroinflammation. We propose that ASDs provide excellent opportunities to study the influence of microglia on neurodevelopment, and this knowledge could lead to novel therapies.

Hierarchical Models of Mood and Anxiety Disorders and the Role of Temperament

2011 ◽  
Author(s):  
D. Ryan Hooper ◽  
Michael J. Ross ◽  
Jillon S. Vander Wal ◽  
Terri L. Weaver
Keyword(s):  
Anxiety Disorders ◽  
Hierarchical Models ◽  
Mood And Anxiety Disorders

Interpreting and Rendering of Qur’anic Verses in Conformity with Convention and Tradition

2020 ◽  
Vol 28 (2) ◽  
Author(s):  
MAE (Ashraf) Dockrat
Keyword(s):  
Reciprocal Relationship

In this article, the role of convention and tradition in the interpretation and rendering of Qur’anic verses are discussed. An overview is given of the reciprocal relationship between Muslim theology and that which is usually referred to as the “Sciences of the Qur’an”. Selected examples of the rendering of specific Qur’anic verses are  analysed, illustrating the influence (or presumed influence) of classical interpretative sources and convention on the translation of the meanings of the Qur’an.

Healing Touch: Clothed Images of the Virgin in Early Modern Portugal

2020 ◽  
pp. 51-78
Author(s):  
Diana Pereira
Keyword(s):  
Early Modern ◽  
Reciprocal Relationship ◽  
Physical Contact ◽  
Religious Art ◽  
Healing Touch ◽  
Devotional Art ◽  
Healing Power ◽  
The Many ◽  
Santa Maria

Over the last decades there was a growing interest in religious materiality, miraculous images, votive practices, and how the faithful engaged with devotional art, as well as a renewed impetus to discuss the long-recognized association between sculpture and touch, after the predominance of the visuality approach. Additionally, the neglected phenomenon of clothing statues has also been increasingly explored. Based on the reading of Santuario Mariano (1707–1723), written by Friar Agostinho de Santa Maria (1642–1728), this paper will closely examine those topics. Besides producing a monumental catalogue of Marian shrines and pilgrimage sites, this source offers a unique insight into the religious experience and the reciprocal relationship between image and devotee in Early Modern Portugal, and is a particularly rich source when describing the believers’ pursuit of physical contact with sculptures. This yearning for proximity is partly explained by the belief in the healing power of Marian sculptures, which in turn seemed to be conveniently transferred to a myriad of objects. When contact with the images themselves was not possible, devotees sought out their clothes, crowns, rosary beads, metric relics, and so forth. Items of clothing such as mantles and veils were particularly used and so it seems obvious they were not mere adornments or donations, but also mediums and extensions of the sculptures’ presence and power. By focusing on the thaumaturgic role of the statues’ clothes and jewels, I will argue how the practice of dressing sculptures was due to much more than stylistic desires or processional needs and draw attention to the many ways believers engaged with religious art in Early Modern Portugal.

The Role of Circadian Rhythms, Light and Melatonin in SAD and Nonseasonal Affective and Anxiety Disorders

2014 ◽  
Vol 10 (3) ◽  
pp. 214-222 ◽  
Author(s):  
Alfred Lewy ◽  
Joshua Tutek ◽  
Liska Havel ◽  
Macia Nikia
Keyword(s):  
Circadian Rhythms ◽  
Anxiety Disorders

The role of personality traits in initiating and maintaining addictive behavior

2016 ◽  
Vol 33 (S1) ◽  
pp. S307-S307
Author(s):  
M. Manea ◽  
B. Savu
Keyword(s):  
Substance Abuse ◽  
Anxiety Disorders ◽  
Personality Traits ◽  
Trait Anxiety ◽  
Psychiatric Clinic ◽  
Strongly Correlated ◽  
Addictive Disorder ◽  
Substance Disorders ◽  
Competing Interest

IntroductionIt is well known that certain personality traits are more linked to drug abuse than others. Psychiatrists are more likely to emphasize the importance of impulsivity in the connection with substance disorders but in the following study we found an important percentage of patients that have a substance abuse were linked to anxiety through impulsiveness as a personality trait.ObjectivesMost youths admitted for a substance abuse are highly impulsive. Our quest was to differentiate what component of impulsivity was more frequently linked to a substance use disorder.MethodsIn the study were included 50 patients admitted in the 3rd Psychiatric Clinic, Substance Dependences Department, Cluj-Napoca. For the identification of the drug abused we used the multitest screening kit in correlation with the results from the Forensic Medicine Institute of Cluj-Napoca. Each patient completed the Barratt Impulsivity Scale and the Swedish Universities Scales of Personality.ResultsHigh scores on BIS-11 strongly correlated with attentional impulsiveness (Pearson's r correlation = .838) which means high inattention and cognitive instability this being linked with anxiety disorders. Cognitive Instability was correlated with Psychic Trait Anxiety (r = 0.29) and Motor Impulsiveness with Somatic Trait Anxiety (r = 0.3). Normal 0 false false false EN-US X-NONE X-NONE.ConclusionsThe underrecognized anxiety disorders in young adults whom are admitted for an addictive disorder prefrontal cortex is known to be the source of both impulsivity and could be linked to anxiety as well (valence asymmetry hypothesis). Normal 0 false false false EN-US X-NONE X-NONE.Disclosure of interestThe authors have not supplied their declaration of competing interest.

scholarly journals Typhoon eye effect versus ripple effect: the role of family size on mental health during the COVID-19 pandemic in Pakistan

2021 ◽  
Vol 17 (1) ◽  
Author(s):  
Tooba Lateef ◽  
Jiyao Chen ◽  
Muhammad Tahir ◽  
Teba Abdul Lateef ◽  
Bryan Z. Chen ◽  
...  
Keyword(s):  
Mental Health ◽  
Anxiety Disorders ◽  
Family Size ◽  
Health Care Providers ◽  
Vulnerable Groups ◽  
Ripple Effect ◽  
Health Issues ◽  
Care Providers ◽  
Populous Country

Abstract Background The recent outbreak of COVID-19 has impacted adversely upon the mental health of millions of people worldwide. Impacts on the mental health conditions and the associated predictors relating to adults in Pakistan, the fifth most populous country in the world, during the COVID-19 remain understudied. Our aim was to investigate distress, anxiety, and overall mental health and their associated predictors among Pakistani adults in this pandemic. We specifically examine mental health issues based on the distance from the epicenter, (a predictor that has revealed opposing evidence in other countries) based on the theories of typhoon eye effect and ripple effect. The sample consisted of 601 adults who were surveyed online about 2.5 months into the outbreak across Pakistan with varying distances from the epicenter of COVID-19 of Karachi. Results The results showed that 9.2 and 19.0% of the participants surpassed the cut-off criteria for distress and anxiety disorders, respectively. Overall, the distance from the epicenter positively predicted the mental health of adults in Pakistan, and family size negatively moderated this effect. The distance from the epicenter negatively predicted distress and anxiety disorders for adults in large families, which are quite common in Pakistan. Conclusion The evidence of the study interestingly finds that the prediction of the mental health of people by their distance from the epicenter depends on family size. The evidence of this study can help to provide initial indicators for mental health care providers to screen vulnerable groups in Pakistan, a populous country that continues struggling to cope with the COVID-19 pandemic.

scholarly journals Development-Dependent Plasticity in Vasoactive Intestinal Polypeptide Neurons in the Infralimbic Cortex

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Stuart A Collins ◽  
Ipe Ninan
Keyword(s):  
Sex Differences ◽  
Anxiety Disorders ◽  
Vasoactive Intestinal Polypeptide ◽  
Cortical Plasticity ◽  
Male Mice ◽  
Infralimbic Cortex ◽  
Membrane Excitability ◽  
Gabaergic Transmission ◽  
Intestinal Polypeptide

Abstract The onset of several neuropsychiatric disorders including anxiety disorders coincides with adolescence. Consistently, threat extinction, which plays a key role in the regulation of anxiety-related behaviors, is diminished during adolescence. Furthermore, this attenuated threat extinction during adolescence is associated with an altered synaptic plasticity in the infralimbic medial prefrontal cortex (IL-mPFC), a brain region critical for threat extinction. However, the mechanism underlying the altered plasticity in the IL-mPFC during adolescence is unclear. Given the purported role of vasoactive intestinal polypeptide expressing interneurons (VIPINs) in disinhibition and hence their potential to affect cortical plasticity, we examined whether VIPINs exhibit an adolescence-specific plasticity in the IL-mPFC. We observed an increase in GABAergic transmission and a decrease in excitability in VIPINs during adolescence. Male mice show a significantly higher VIPIN-pyramidal neuron GABAergic transmission compared with female mice. The observed increase in GABAergic transmission and a decrease in membrane excitability in VIPINs during adolescence could play a role in the altered plasticity in the adolescent IL-mPFC. Furthermore, the suppression of VIPIN-mediated GABAergic transmission in females might be relevant to sex differences in anxiety disorders.

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