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Monoamine oxidase, personality

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https://www.readbyqxmd.com/read/29778018/phytochemistry-and-pharmacology-of-anti-depressant-medicinal-plants-a-review
#1
REVIEW
Jeanette Martins, Brijesh S
Stress renders an individual to experience mental pressure and exhaustion which brings about feelings of anxiety, depression, anger and/or other negative emotions. Depression affects a person's state of mind, behaviour, health and is often associated with suicide. The use of anti-depressant drugs as therapeutic agents is associated with symptoms such as, delayed onset of action, side-effects, drug-drug and dietary interactions, sexual dysfunction, cardiac toxicity, etc. Thus, there is need to target these issues and improve current treatment options...
May 16, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29759929/entacapone-and-prostate-cancer-in-parkinson-s-disease-patients-a-large-veterans-affairs-healthcare-system-study
#2
Jacqueline M Major, Diane Dong, Francesca Cunningham, Kunthel By, Kwan Hur, David C Shih, Rong Jiang, Gerald D Podskalny, XiangMing Wei, Simone Pinheiro, Steven T Bird, Stephine Keeton, David J Graham
BACKGROUND: An increased incidence of prostate cancer was observed in Parkinson's disease (PD) patients treated with entacapone during a pre-approval randomized clinical trial; the relation has not been robustly investigated in the U.S. ambulatory setting. OBJECTIVE: To investigate whether entacapone is associated with prostate cancer and to assess whether the associations are correlated with advanced disease at the time of cancer diagnosis. METHODS: Using data from the Department of Veterans Affairs healthcare system, new-user cohorts were created of PD patients treated with add-on entacapone or add-on dopamine agonist/monoamine oxidase B inhibitors between January 2000 and December 2014...
May 5, 2018: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/29746646/corticostriatal-connectivity-in-antisocial-personality-disorder-by-mao-a-genotype-and-its-relationship-to-aggressive-behavior
#3
Nathan J Kolla, Katharine Dunlop, Jeffrey H Meyer, Jonathan Downar
Background: The influence of genetic variation on resting-state neural networks represents a burgeoning line of inquiry in psychiatric research. Monoamine oxidase A, an X-linked gene, is one example of a molecular target linked to brain activity in psychiatric illness. Monoamine oxidase A genetic variants, including the high and low variable nucleotide tandem repeat polymorphisms, have been shown to differentially affect brain functional connectivity in healthy humans. However, it is currently unknown whether these same polymorphisms influence resting-state brain activity in clinical conditions...
May 9, 2018: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29620793/antidepressants-versus-placebo-for-panic-disorder-in-adults
#4
REVIEW
Irene Bighelli, Mariasole Castellazzi, Andrea Cipriani, Francesca Girlanda, Giuseppe Guaiana, Markus Koesters, Giulia Turrini, Toshi A Furukawa, Corrado Barbui
BACKGROUND: Panic disorder is characterised by repeated, unexpected panic attacks, which represent a discrete period of fear or anxiety that has a rapid onset, reaches a peak within 10 minutes, and in which at least four of 13 characteristic symptoms are experienced, including racing heart, chest pain, sweating, shaking, dizziness, flushing, stomach churning, faintness and breathlessness. It is common in the general population with a lifetime prevalence of 1% to 4%. The treatment of panic disorder includes psychological and pharmacological interventions...
April 5, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29557505/differences-in-snp-genotype-distributions-between-complex-and-simple-suicides
#5
Tanja Čugura, Jakob Boh, Tomaž Zupanc, Peter Pregelj, Alja Videtič Paska
Dysregulations in serotonin neurotransmission can be a strong contributing factor in suicide and impulsive-aggressive personality traits. Victims of suicide form a heterogeneous group in terms of planning, lethality and number of used methods. In this study, we tested single nucleotide polymorphisms (SNPs) of the monoamine oxidase (MAO) A and B genes on the Slovenian population, which has one of the highest suicide rates in the world. Genotyping was performed on 77 victims of complex suicide, 406 victims of simple suicide and 289 controls...
March 20, 2018: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/29549516/effect-of-the-glutamate-nmda-receptor-antagonist-memantine-as-adjunctive-treatment-in-borderline-personality-disorder-an-exploratory-randomised-double-blind-placebo-controlled-trial
#6
Jayashri Kulkarni, Natalie Thomas, Abdul-Rahman Hudaib, Emorfia Gavrilidis, Jasmin Grigg, Raelene Tan, Jacinta Cheng, Amelia Arnold, Caroline Gurvich
BACKGROUND: Borderline personality disorder (BPD) is a complex, severe and highly stigmatised psychiatric illness. Several lines of evidence highlight the causal link between chronic stress, glucocorticoid response to stress and glutamatergic overactivity as a key event in the pathophysiology of BPD. Therefore, molecular mechanisms capable of regulating glutamate excitotoxicity represent novel and potentially promising treatment targets. Memantine-HCl is a voltage-dependent N-methyl-D-aspartate (NMDA) receptor 'channel blocker' that selectively blocks pathological glutamate overactivity...
February 2018: CNS Drugs
https://www.readbyqxmd.com/read/29541533/impulse-control-disorders-in-parkinson-s-sleep-disorders-and-nondopaminergic-associations
#7
Samuel Carbunaru, Robert S Eisinger, Adolfo Ramirez-Zamora, Dana Bassan, Amin Cervantes-Arriaga, Mayela Rodriguez-Violante, Daniel Martinez-Ramirez
Objectives: Impulse control disorders (ICDs) are common among patients with Parkinson's disease (PD). Risk factors identified for developing ICDs include young age, family history, and impulsive personality traits. However, the association of these potentially disabling disorders with nondopaminergic drugs and sleep disorders has been understudied. Our objective was to examine the association between ICDs and nondopaminergic medications and sleep disorders. Methods: We conducted an observational study of 53 patients with PD from the National Institute of Neurology and Neurosurgery...
March 2018: Brain and Behavior
https://www.readbyqxmd.com/read/29487517/mao-a-phenotype-effects-response-sensitivity-and-the-parietal-old-new-effect-during-recognition-memory
#8
Robert S Ross, Andrew Smolen, Tim Curran, Erika Nyhus
A critical problem for developing personalized treatment plans for cognitive disruptions is the lack of understanding how individual differences influence cognition. Recognition memory is one cognitive ability that varies from person to person and that variation may be related to different genetic phenotypes. One gene that may impact recognition memory is the monoamine oxidase A gene ( MAO-A ), which influences the transcription rate of MAO-A. Examination of how MAO-A phenotypes impact behavioral and event-related potentials (ERPs) correlates of recognition memory may help explain individual differences in recognition memory performance...
2018: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29467046/the-interaction-between-monoamine-oxidase-a-maoa-and-childhood-maltreatment-as-a-predictor-of-personality-pathology-in-females-emotional-reactivity-as-a-potential-mediating-mechanism
#9
Amy L Byrd, Stephen B Manuck, Samuel W Hawes, Tayler J Vebares, Vishwajit Nimgaonkar, Kodavali V Chowdari, Alison E Hipwell, Kate Keenan, Stephanie D Stepp
Research consistently demonstrates that common polymorphic variation in monoamine oxidase A (MAOA) moderates the influence of childhood maltreatment on later antisocial behavior, with growing evidence that the "risk" allele (high vs. low activity) differs for females. However, little is known about how this Gene × Environment interaction functions to increase risk, or if this risk pathway is specific to antisocial behavior. Using a prospectively assessed, longitudinal sample of females (n = 2,004), we examined whether changes in emotional reactivity (ER) during adolescence mediated associations between this Gene × Environment and antisocial personality disorder in early adulthood...
February 22, 2018: Development and Psychopathology
https://www.readbyqxmd.com/read/29423959/low-resilience-to-stress-is-associated-with-candidate-gene-expression-alterations-in-the-dopaminergic-signalling-pathway
#10
Esfandiar Azadmarzabadi, Arvin Haghighatfard, Alireza Mohammadi
BACKGROUND: In stressful situations, a person's ability to appropriately complete tasks with minimal anxiety is known as stress resilience. Genetic variants in neuropeptide Y, Corticotropin releasing hormone receptor 1 (CRHR1), and serotonin transporter have been previously reported to be associated with low resilience, but the relationship between low resilience and the dopaminergic signalling pathway is not well understood. Here, we aimed to describe the association between comprehensive psychological characteristics and messenger RNA levels of dopamine receptor D1 (DRD1), dopamine receptor D2 (DRD2), dopamine receptor D3 (DRD3), dopamine receptor D4 (DRD4), dopamine receptor D5 (DRD5), COMT, Dopamine Beta-Hydroxylase (DBH), Tyrosine hydroxylase (TH), monoamine oxidase A (MAOM), dopa decarboxylase (DDC), dopamine transporter (DAT), serotonin transporter (5-HTT), brain-derived neurotrophic factor (BDNF) and glial cell line-derived neurotrophic factor (GDNF) genes based on peripheral blood samples from 400 subjects who react differently to major life event stressors...
February 8, 2018: Psychogeriatrics: the Official Journal of the Japanese Psychogeriatric Society
https://www.readbyqxmd.com/read/29415053/the-association-between-glutamine-repeats-in-the-androgen-receptor-gene-and-personality-traits-in-dromedary-camel-camelus-dromedarius
#11
Sherif Ramadan, Amira M Nowier, Yusuke Hori, Miho Inoue-Murayama
Temperament traits such as fearfulness are important as they define an animal's responses to its environment and handling. The increasing automation of daily tasks and growing population limits contact between camels and humans. Such limitations contribute to fear of humans and changes in physical environment. Monoamine oxidase A (MAOA) and androgen receptor (AR) genes are important candidates associated with mammal personality. In our analysis, MAOA exon 15 showed no polymorphism but a novel polymorphism was seen in the camel AR exon 1; 16, 17, 18, and 19 glutamine repeats were detected...
2018: PloS One
https://www.readbyqxmd.com/read/29186431/monoamine-oxidase-a-gene-methylation-and-its-role-in-posttraumatic-stress-disorder-first-evidence-from-the-south-eastern-europe-see-ptsd-study
#12
Christiane Ziegler, Christiane Wolf, Miriam A Schiele, Elma Feric Bojic, Sabina Kucukalic, Emina Sabic Dzananovic, Aferdita Goci Uka, Blerina Hoxha, Valdete Haxhibeqiri, Shpend Haxhibeqiri, Nermina Kravic, Mirnesa Muminovic Umihanic, Ana Cima Franc, Nenad Jaksic, Romana Babic, Marko Pavlovic, Bodo Warrings, Alma Bravo Mehmedbasic, Dusko Rudan, Branka Aukst-Margetic, Abdulah Kucukalic, Damir Marjanovic, Dragan Babic, Nada Bozina, Miro Jakovljevic, Osman Sinanovic, Esmina Avdibegovic, Ferid Agani, Alma Dzubur-Kulenovic, Jürgen Deckert, Katharina Domschke
Background: Posttraumatic stress disorder is characterized by an overactive noradrenergic system conferring core posttraumatic stress disorder symptoms such as hyperarousal and reexperiencing. Monoamine oxidase A is one of the key enzymes mediating the turnover of noradrenaline. Here, DNA methylation of the monoamine oxidase A gene exonI/intronI region was investigated for the first time regarding its role in posttraumatic stress disorder risk and severity. Methods: Monoamine oxidase A methylation was analyzed via direct sequencing of sodium bisulfite-treated DNA extracted from blood cells in a total sample of N=652 (441 male) patients with current posttraumatic stress disorder, patients with remitted posttraumatic stress disorder, and healthy probands (comparison group) recruited at 5 centers in Bosnia-Herzegovina, Croatia, and the Republic of Kosovo...
May 1, 2018: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29075213/monoamine-oxidase-a-maoa-gene-and-personality-traits-from-late-adolescence-through-early-adulthood-a-latent-variable-investigation
#13
Man K Xu, Darya Gaysina, Roula Tsonaka, Alexandre J S Morin, Tim J Croudace, Jennifer H Barnett, Jeanine Houwing-Duistermaat, Marcus Richards, Peter B Jones
Very few molecular genetic studies of personality traits have used longitudinal phenotypic data, therefore molecular basis for developmental change and stability of personality remains to be explored. We examined the role of the monoamine oxidase A gene ( MAOA ) on extraversion and neuroticism from adolescence to adulthood, using modern latent variable methods. A sample of 1,160 male and 1,180 female participants with complete genotyping data was drawn from a British national birth cohort, the MRC National Survey of Health and Development (NSHD)...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/29073746/monoamine-oxidase-a-genetic-variants-and-childhood-abuse-predict-impulsiveness-in-borderline-personality-disorder
#14
Nathan J Kolla, Jeffrey Meyer, Marcos Sanches, James Charbonneau
Objective: Impulsivity is a core feature of borderline personality disorder (BPD) and antisocial personality disorder (ASPD) that likely arises from combined genetic and environmental influences. The interaction of the low activity variant of the monoamine oxidase-A (MAOA-L) gene and early childhood adversity has been shown to predict aggression in clinical and non-clinical populations. Although impulsivity is a risk factor for aggression in BPD and ASPD, little research has investigated potential gene-environment (G×E) influences impacting its expression in these conditions...
November 30, 2017: Clinical Psychopharmacology and Neuroscience: the Official Scientific Journal of the Korean College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28851912/association-of-monoamine-oxidase-a-genetic-variants-and-amygdala-morphology-in-violent-offenders-with-antisocial-personality-disorder-and-high-psychopathic-traits
#15
Nathan J Kolla, Raihaan Patel, Jeffrey H Meyer, M Mallar Chakravarty
Violent offending is elevated among individuals with antisocial personality disorder (ASPD) and high psychopathic traits (PP). Morphological abnormalities of the amygdala and orbitofrontal cortex (OFC) are present in violent offenders, which may relate to the violence enacted by ASPD + PP. Among healthy males, monoamine oxidase-A (MAO-A) genetic variants linked to low in vitro transcription (MAOA-L) are associated with structural abnormalities of the amygdala and OFC. However, it is currently unknown whether amygdala and OFC morphology in ASPD relate to MAO-A genetic polymorphisms...
August 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28844162/the-association-of-measures-of-the-serotonin-system-personality-alcohol-use-and-smoking-with-risk-taking-traffic-behavior-in-adolescents-in-a-longitudinal-study
#16
Kadi Luht, Diva Eensoo, Liina-Mai Tooding, Jaanus Harro
Studies on the neurobiological basis of risk-taking behavior have most often focused on the serotonin system. The promoter region of the gene encoding the serotonin transporter contains a polymorphic site (5-HTTLPR) that is important for the transcriptional activity, and studies have demonstrated its association with brain activity and behavior. Another molecular mechanism that reflects the capacity of the central serotonin system is the activity of the enzyme monoamine oxidase (MAO) as measured in platelets...
January 2018: Nordic Journal of Psychiatry
https://www.readbyqxmd.com/read/28802938/impulse-control-and-related-disorders-in-parkinson-s-disease
#17
Daniel Weintraub, Daniel O Claassen
Impulse control disorders (ICDs), such as compulsive gambling, buying, sexual, and eating behaviors, are a serious and increasingly recognized complication in Parkinson's disease (PD), occurring in up to 20% of PD patients over the course of their illness. Related behaviors include punding (stereotyped, repetitive, purposeless behaviors), dopamine dysregulation syndrome (DDS) (compulsive medication overuse), and hobbyism (e.g., compulsive internet use, artistic endeavors, and writing). These disorders have a significant impact on quality of life and function, strain interpersonal relationships, and worsen caregiver burden, and are associated with significant psychiatric comorbidity...
2017: International Review of Neurobiology
https://www.readbyqxmd.com/read/28273839/parkinson-s-disease-from-pathogenesis-to-pharmacogenomics
#18
REVIEW
Ramón Cacabelos
Parkinson's disease (PD) is the second most important age-related neurodegenerative disorder in developed societies, after Alzheimer's disease, with a prevalence ranging from 41 per 100,000 in the fourth decade of life to over 1900 per 100,000 in people over 80 years of age. As a movement disorder, the PD phenotype is characterized by rigidity, resting tremor, and bradykinesia. Parkinson's disease -related neurodegeneration is likely to occur several decades before the onset of the motor symptoms. Potential risk factors include environmental toxins, drugs, pesticides, brain microtrauma, focal cerebrovascular damage, and genomic defects...
March 4, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28119174/maoa-and-maob-polymorphisms-and-personality-traits-in-suicide-attempters-and-healthy-controls-a-preliminary-study
#19
Martina Balestri, Raffaella Calati, Alessandro Serretti, Annette M Hartmann, Bettina Konte, Marion Friedl, Ina Giegling, Dan Rujescu
Serotonergic neurotransmission dysfunctions have been well documented in patients with suicidal behaviour. We investigated monoamine oxidase A (MAOA: rs2064070, rs6323, rs909525) and B (MAOB: rs1799836, rs2311013, rs2205655) genetic modulation of personality traits (Temperament and Character Inventory, TCI) as endophenotype for suicidal behaviour. 108 suicide attempters and 286 healthy controls of German origin were screened. Among females, allelic analyses revealed associations between MAOA rs6323 A allele and higher Harm Avoidance in suicide attempters and MAOB rs2205655 A allele and higher Cooperativeness scores in healthy controls...
March 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28054193/personality-as-an-intermediate-phenotype-for-genetic-dissection-of-alcohol-use-disorder
#20
REVIEW
Lars Oreland, Gianvito Lagravinese, Simone Toffoletto, Kent W Nilsson, Jaanus Harro, C Robert Cloninger, Erika Comasco
Genetic and environmental interactive influences on predisposition to develop alcohol use disorder (AUD) account for the high heterogeneity among AUD patients and make research on the risk and resiliency factors complicated. Several attempts have been made to identify the genetic basis of AUD; however, only few genetic polymorphisms have consistently been associated with AUD. Intermediate phenotypes are expected to be in-between proxies of basic neuronal biological processes and nosological symptoms of AUD...
January 2018: Journal of Neural Transmission
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