The role of psychosocial factors and psychiatric disorders in functional dyspepsia

2013 ◽  
Vol 10 (3) ◽  
pp. 158-167 ◽  
Author(s):  
Lukas Van Oudenhove ◽  
Qasim Aziz
1996 ◽  
Vol 30 (2) ◽  
pp. 165-170 ◽  
Author(s):  
Perminder Sachdev

Objective: A critical examination of the term ‘organic’ in psychiatry and its proposed alternatives. Method: An examination of the published literature on the concepts of ‘organicity’ in mental syndromes, and of the mind-brain problem. Results: The term ‘organic’ presents a number of problems, some of which can be described as those of historical schism, duality, method, practice, scholasticism and semantics. The currently available alternatives are not without their difficulties, and examples are provided. Conclusion: Whether the term ‘organic’ is retained or replaced, we are condemned to an unsatisfactory position while we await a radically new paradigm to understand the role of neurobiological and psychosocial factors in psychiatric disorders.


2016 ◽  
Vol 63 (1) ◽  
pp. 14-20 ◽  
Author(s):  
Jacob Peedicayil

Background: Epigenetics refers to the study of heritable changes in gene expression not involving changes in DNA sequence and is presently an active area of research in biology and medicine. There is increasing evidence that epigenetics is involved in the pathogenesis of psychiatric disorders. Aims and Methods: Several studies conducted to date have suggested that psychosocial factors act by modifying epigenetic mechanisms of gene expression in the brain in the pathogenesis of psychiatric disorders. Such studies have been conducted both on brain tissues and also using peripheral tissues as substitutes for brain tissues. This article reviews such studies. Results and Conclusion: Epigenetic mechanisms of gene expression in the brain appear to link one individual with another in the context of social psychiatry. Epigenetics appears to be of major importance to the field of social psychiatry.


1999 ◽  
Author(s):  
Joshua M. Smyth ◽  
Jill Hockemeyer ◽  
Adam Hurewitz ◽  
Arthur A. Stone

Author(s):  
Huanghe Ding ◽  
Arnethea L. Sutton ◽  
Alejandra Hurtado‐de‐Mendoza ◽  
Vanessa B. Sheppard

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Chang-geng Song ◽  
Xin Kang ◽  
Fang Yang ◽  
Wan-qing Du ◽  
Jia-jia Zhang ◽  
...  

Abstract In mature mammalian brains, the endocannabinoid system (ECS) plays an important role in the regulation of synaptic plasticity and the functioning of neural networks. Besides, the ECS also contributes to the neurodevelopment of the central nervous system. Due to the increase in the medical and recreational use of cannabis, it is inevitable and essential to elaborate the roles of the ECS on neurodevelopment. GABAergic interneurons represent a group of inhibitory neurons that are vital in controlling neural network activity. However, the role of the ECS in the neurodevelopment of GABAergic interneurons remains to be fully elucidated. In this review, we provide a brief introduction of the ECS and interneuron diversity. We focus on the process of interneuron development and the role of ECS in the modulation of interneuron development, from the expansion of the neural stem/progenitor cells to the migration, specification and maturation of interneurons. We further discuss the potential implications of the ECS and interneurons in the pathogenesis of neurological and psychiatric disorders, including epilepsy, schizophrenia, major depressive disorder and autism spectrum disorder.


2003 ◽  
Vol 160 (5) ◽  
pp. 890-895 ◽  
Author(s):  
Wilson M. Compton III ◽  
Linda B. Cottler ◽  
Jacqueline L. Jacobs ◽  
Arbi Ben-Abdallah ◽  
Edward L. Spitznagel

2007 ◽  
Vol 144B (2) ◽  
pp. 159-164 ◽  
Author(s):  
Rickard L. Sjöberg ◽  
Kent W. Nilsson ◽  
Hanna-Linn Wargelius ◽  
Jerzy Leppert ◽  
Leif Lindström ◽  
...  

Author(s):  
Leo Sher

Abstract Adolescent suicide research has mostly focused on demographic risk factors. Such studies focus on who is at risk, but do not explain why certain adolescents are at risk for suicide. Studies of the neurobiology of adolescent suicide could clarify why some youths are more suicidal than others and help to find biological markers of suicidal behavior in teenagers. Over the past decade the role of brain-derived neurotrophic factor (BDNF) in the pathophysiology of suicidal behavior has attracted significant attention of scientists. BDNF is involved in the pathophysiology of many psychiatric disorders associated with suicidal behavior including depression, post-traumatic stress disorder, schizophrenia, and obsessive-compulsive disorder. BDNF dysregulation could be associated with increased suicidality independently of psychiatric diagnoses. BDNF plays an important role in the regulation and growth of neurons during childhood and adolescence. Prominent among the brain regions undergoing developmental change during adolescence are stressor-sensitive areas. The serotonin dysfunction found in adolescent and adult suicidal behavior could be related to the low level of BDNF, which impedes the normal development of serotonin neurons during brain development. BDNF dysfunction could play a more significant role in the pathophysiology of psychiatric disorders and suicidal behavior in adolescents than in adults. Treatment-induced enhancement in the BDNF function could reduce suicidal behavior secondary to the improvement in psychiatric pathology or independently of improvement in psychiatric disorders. It is interesting to hypothesize that BDNF could be a biological marker of suicidal behavior in adolescents or in certain adolescent populations.


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