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Dopamine and sex

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https://www.readbyqxmd.com/read/29774458/effects-of-rs591323-on-serotonin-transporter-availability-in-healthy-male-subjects
#1
Kyoungjune Pak, Hyun-Yeol Nam, Seunghyeon Shin, Keunyoung Kim, Myung Jun Lee, Eun-Joo Kim, Jae Meen Lee, Seong-Jang Kim, In Joo Kim
OBJECTIVES: We aimed to investigate the association between genetic factors of SNPs dopamine transporter (DAT) and serotonin transporter (SERT) availabilities in healthy controls. METHODS: The study population consisted of healthy controls with screening 123 I-FP-CIT single-photon emission computed tomography. Specific binding of 123 I-FP-CIT regarding DAT and SERT was calculated using a region of interest analysis. VOI template was applied to measure specific binding ratios (SBRs) of caudate nucleus, putamen, striatum, midbrain, and pons...
May 17, 2018: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/29774002/on-the-drive-specificity-of-freudian-drives-for-the-generation-of-seeking-activities-the-importance-of-the-underestimated-imperative-motor-factor
#2
Michael Kirsch, Wolfgang Mertens
Doubters of Freud's theory of drives frequently mentioned that his approach is outdated and therefore cannot be useful for solving current problems in patients with mental disorders. At present, many scientists believe that affects rather than drives are of utmost importance for the emotional life and the theoretical framework of affective neuroscience, developed by Panksepp, strongly underpinned this view. Panksepp evaluated seven so-called command systems and the SEEKING system is therein of central importance...
2018: Frontiers in Psychology
https://www.readbyqxmd.com/read/29768629/controversial-issues-in-the-management-of-hyperprolactinemia-and-prolactinomas-an-overview-by-the-neuroendocrinology-department-of-the-brazilian-society-of-endocrinology-and-metabolism
#3
Lucio Vilar, Julio Abucham, José Luciano Albuquerque, Luiz Antônio Araujo, Monalisa F Azevedo, Cesar Luiz Boguszewski, Luiz Augusto Casulari, Malebranche B C Cunha Neto, Mauro A Czepielewski, Felipe H G Duarte, Manuel Dos S Faria, Monica R Gadelha, Heraldo M Garmes, Andrea Glezer, Maria Helane Gurgel, Raquel S Jallad, Manoel Martins, Paulo A C Miranda, Renan M Montenegro, Nina R C Musolino, Luciana A Naves, Antônio Ribeiro-Oliveira Júnior, Cíntia M S Silva, Camila Viecceli, Marcello D Bronstein
Prolactinomas are the most common pituitary adenomas (approximately 40% of cases), and they represent an important cause of hypogonadism and infertility in both sexes. The magnitude of prolactin (PRL) elevation can be useful in determining the etiology of hyperprolactinemia. Indeed, PRL levels > 250 ng/mL are highly suggestive of the presence of a prolactinoma. In contrast, most patients with stalk dysfunction, drug-induced hyperprolactinemia or systemic diseases present with PRL levels < 100 ng/mL. However, exceptions to these rules are not rare...
March 2018: Archives of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29720962/sex-differences-in-medium-spiny-neuron-excitability-and-glutamatergic-synaptic-input-heterogeneity-across-striatal-regions-and-evidence-for-estradiol-dependent-sexual-differentiation
#4
REVIEW
Jinyan Cao, Jaime A Willett, David M Dorris, John Meitzen
Steroid sex hormones and biological sex influence how the brain regulates motivated behavior, reward, and sensorimotor function in both normal and pathological contexts. Investigations into the underlying neural mechanisms have targeted the striatal brain regions, including the caudate-putamen, nucleus accumbens core (AcbC), and shell. These brain regions are of particular interest to neuroendocrinologists given that they express membrane-associated but not nuclear estrogen receptors, and also the well-established role of the sex steroid hormone 17β-estradiol (estradiol) in modulating striatal dopamine systems...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29718062/iowa-gambling-task-performance-in-parkinson-disease-patients-with-impulse-control-disorders
#5
Julia W Biars, Nicole L Johnson, Michelle Nespeca, Robyn M Busch, Cynthia S Kubu, Darlene P Floden
Objective: A subgroup of patients with Parkinson disease (PD) develops impulse control disorders (ICD) associated with their dopamine replacement therapy. Patients and their families may be reluctant to report ICD symptoms or unaware these symptoms are related to PD medication, which can make detecting an ICD difficult for clinicians. Ideally, a behavioral measure that is sensitive to ICD could be employed to ensure that patients with these behaviors are identified and treated. The Iowa Gambling Task (IGT), a standardized decision-making task, has proven sensitive in other populations with impulse control problems...
April 27, 2018: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
https://www.readbyqxmd.com/read/29716536/dopamine-d2-receptor-gene-polymorphisms-and-externalizing-behaviors-in-children-and-adolescents
#6
Osmar Henrique Della Torre, Lúcia Arisaka Paes, Taciane Barbosa Henriques, Maricilda Palandi de Mello, Eloisa Helena Rubello Valler Celeri, Paulo Dalgalarrondo, Gil Guerra-Júnior, Amilton Dos Santos-Júnior
BACKGROUND: Dopamine is involved in several cerebral physiological processes, and single nucleotide polymorphisms (SNP) in the dopamine D2 receptor gene (DRD2) have been associated with numerous neurological and mental disorders, including those involving alterations in cognitive and emotional processes. METHODS: The aim of this study was to evaluate the association between the SNPs c.957C > T (rs6277) and c.-585A > G (rs1799978) in the DRD2 gene and behavioral characteristics of children and adolescents based on an inventory of the Child Behavior Checklist (CBCL)...
May 2, 2018: BMC Medical Genetics
https://www.readbyqxmd.com/read/29695928/association-of-expression-of-drd2-rs1800497-polymorphism-with-migraine-risk-in-han-chinese-individuals
#7
Yingfeng Deng, Jianping Huang, Huijun Zhang, Xueqin Zhu, Qin Gong
Background: Previous studies suggested that single-nucleotide polymorphisms in dopamine receptor D2 ( DRD2 ) are the susceptibility loci for migraine. This study was aimed at evaluating the contribution of DRD2 rs1800497 and its expression to migraine risk in Han Chinese subjects. Methods: In total, 250 patients with migraine and 250 age- and sex-matched control subjects were included in this study. TaqMan allelic discrimination assay was used for DRD2 rs1800497 genotyping...
2018: Journal of Pain Research
https://www.readbyqxmd.com/read/29689260/effects-of-monoamines-on-the-intrinsic-excitability-of-lateral-orbitofrontal-cortex-neurons-in-alcohol-dependent-and-non-dependent-female-mice
#8
Sudarat Nimitvilai, Marcelo F Lopez, John J Woodward
Changes in brain reward and control systems of frontal cortical areas including the orbitofrontal cortex (OFC) are associated with alcohol use disorders (AUD). The OFC is extensively innervated by monoamines, and drugs that target monoamine receptors have been used to treat a number of neuropsychiatric diseases, including AUDs. Recent findings from this laboratory demonstrate that D2, α2-adrenergic and 5HT1A receptors all decrease the intrinsic excitability of lateral OFC (lOFC) neurons in naïve male mice and that this effect is lost in mice exposed to repeated cycles of chronic intermittent ethanol (CIE) vapor...
April 21, 2018: Neuropharmacology
https://www.readbyqxmd.com/read/29679989/d1-but-not-d2-dopamine-receptor-regulates-steroid-levels-during-the-final-stages-of-pikeperch-gametogenesis
#9
J Roche, D Żarski, A Khendek, I Ben Ammar, C Broquard, A Depp, Y Ledoré, T Policar, P Fontaine, S Milla
In pikeperch, Sander lucioperca, aquaculture hormonal treatment is usually applied to synchronize ovulation. However, the effect of dopamine (DA) receptor antagonists, in particular those blocking the D1 DA receptors, remains unknown. Thus, the aim of the present study was to investigate and compare the effects of D1 and D2 DA receptor antagonists on the sex-steroid production and reproductive performance of the species. Two experiments were performed during which mature pikeperch females were injected with different molecules: NaCl 0...
April 22, 2018: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/29675596/post-finasteride-syndrome-and-post-ssri-sexual-dysfunction-two-sides-of-the-same-coin
#10
REVIEW
Silvia Giatti, Silvia Diviccaro, Giancarlo Panzica, Roberto Cosimo Melcangi
Sexual dysfunction is a clinical condition due to different causes including the iatrogenic origin. For instance, it is well known that sexual dysfunction may occur in patients treated with antidepressants like selective serotonin reuptake inhibitors (SSRI). A similar side effect has been also reported during treatment with finasteride, an inhibitor of the enzyme 5alpha-reductase, for androgenetic alopecia. Interestingly, sexual dysfunction persists in both cases after drug discontinuation. These conditions have been named post-SSRI sexual dysfunction (PSSD) and post-finasteride syndrome (PFS)...
April 19, 2018: Endocrine
https://www.readbyqxmd.com/read/29671049/parent-offspring-cohabitation-after-weaning-inhibits-partner-preference-and-alters-central-oxytocin-and-dopamine-systems-in-adult-mandarin-vole
#11
Ruiyong Wu, Zhenzhen Song, Fadao Tai
In some mammals, offspring may live with their parents for a very long time after weaning, but little is known about the effect of post-weaning parent-offspring cohabitation on the behavioral and neurobiological development of offspring. Here, we explored the effect of this experience on partner preference in adult mandarin vole (Microtus mandarinus). Levels of central oxytocin (OT), tyrosine hydroxylase (TH), as well as OT receptor (OTR), dopamine D1-type and D2-type receptors (D1R and D2R) mRNA expression in the nucleus accumbens (NAcc) and medial amygdala (MeA) were also measured...
April 18, 2018: Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology
https://www.readbyqxmd.com/read/29671013/ontogeny-of-cocaine-induced-behaviors-and-cocaine-pharmacokinetics-in-male-and-female-neonatal-preweanling-and-adult-rats
#12
Sanders A McDougall, Matthew G Apodaca, Alena Mohd-Yusof, Adrian D Mendez, Caitlin G Katz, Angie Teran, Israel Garcia-Carachure, Anthony T Quiroz, Cynthia A Crawford
RATIONALE: Ontogenetic differences in the behavioral responsiveness to cocaine have often been attributed to the maturation of dopaminergic elements (e.g., dopamine transporters, D2High receptors, receptor coupling, etc.). OBJECTIVE: The purpose of this study was to determine whether ontogenetic changes in cocaine pharmacokinetics might contribute to age-dependent differences in behavioral responsiveness. METHODS: Male and female neonatal (PD 5), preweanling (PD 10 and PD 20), and adult (PD 70) rats were injected (IP) with cocaine or saline and various behaviors (e...
April 18, 2018: Psychopharmacology
https://www.readbyqxmd.com/read/29670821/amphetamine-but-not-methylphenidate-increases-ethanol-intake-in-adolescent-male-but-not-in-female-rats
#13
Paul Ruiz, Aldo Calliari, Patricia Genovese, Cecilia Scorza, Ricardo Marcos Pautassi
Introduction: There has been an increasing interest in analyzing the interactions between stimulants and ethanol during childhood and adolescence. Stimulants are used to treat attention-deficit hyperactivity disorder (ADHD) in these developmental stages, during which ethanol initiation and escalation often occur. Methods: This study assessed the effects of repeated d-amphetamine (AMPH) or methylphenidate (MPH) treatment during adolescence [male and female Wistar rats, between postnatal day (PD) 28 to PD34, approximately] on the initiation of ethanol intake during a later section of adolescence (PD35 to PD40)...
April 2018: Brain and Behavior
https://www.readbyqxmd.com/read/29665066/serotonin-beta-amyloid-and-cognition-in-parkinson-disease
#14
Vikas Kotagal, Cathie Spino, Nicolaas I Bohnen, Robert A Koeppe, Roger L Albin
OBJECTIVE: Serotoninergic neurotransmission may modulate beta-amyloid peptide (Aβ) metabolism through up-regulation of alpha-secretase. Early Parkinson disease (PD) shows variable serotoninergic denervation, which may impact Aβ deposition. METHODS: We conducted three analyses to explore associations between serotoninergic neurotransmission and cerebral Aβ burden in PD. The first was a cross-sectional imaging study of PD subjects (n=23) using the serotoninergic transporter positron emission tomography (PET) ligand [11 C]DASB and amyloid PET Pittsburgh compound B ([11 C]PiB)...
April 17, 2018: Annals of Neurology
https://www.readbyqxmd.com/read/29658920/identification-of-dopamine-d1-alpha-receptor-within-rodent-nucleus-accumbens-by-an-innovative-rna-in-situ-detection-technology
#15
Hailong Li, Jessica M Illenberger, Kristen A McLaurin, Charles F Mactutus, Rosemarie M Booze
In the central nervous system, the D1-alpha subtype receptor (Drd1α) is the most abundant dopamine (DA) receptor, which plays a vital role in regulating neuronal growth and development. However, the mechanisms underlying Drd1α receptor abnormalities mediating behavioral responses and modulating working memory function are still unclear. Using a novel RNA in situ hybridization assay, the current study identified dopamine Drd1α receptor and tyrosine hydroxylase (TH) RNA expression from DA-related circuitry in the nucleus accumbens (NAc) area and substantia nigra region (SNR), respectively...
March 27, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29657017/assessment-of-the-antigenic-and-neuroprotective-activity-of-the-subunit-anti-toxoplasma-vaccine-in-t-gondii-experimentally-infected-mice
#16
Justyna Gatkowska, Marek Wieczorek, Bożena Dziadek, Katarzyna Dzitko, Jarosław Dziadek, Henryka Długońska
The aim of this study was to evaluate the immunogenic and immunoprotective activities and to determine the neuroprotective capacity of the tetravalent vaccine containing selected recombinant T. gondii antigens (ROP2 + ROP4 + SAG1 + MAG1) administered with safe adjuvants (MPL and alum) using male and female inbred mice. The tested antigenic combination provided partial protection against brain cyst formation, especially in males (reduction in cyst burden by 72%). The decrease in cyst burden was observed for the whole brain as well as for specified brain regions associated with natural defensive behaviors, emotion processing and integration of motor and sensory stimuli...
April 30, 2018: Veterinary Parasitology
https://www.readbyqxmd.com/read/29626485/rapid-effects-of-ovarian-hormones-in-dorsal-striatum-and-nucleus-accumbens
#17
REVIEW
Katie E Yoest, Jacqueline A Quigley, Jill B Becker
Estradiol and progesterone rapidly induce changes in dopaminergic signaling within the dorsal striatum and nucleus accumbens of female rats. In ovariectomized females, estradiol rapidly enhances dopamine release and modulates binding of dopamine receptors. Progesterone further potentiates the effect of estradiol on dopamine release. The effects of both estradiol and progesterone are time course dependent, with increases in dopamine release immediately after acute hormone administration followed by later inhibition of dopamine release...
April 4, 2018: Hormones and Behavior
https://www.readbyqxmd.com/read/29607713/association-of-24-h-maternal-deprivation-with-a-saline-injection-in-the-neonatal-period-alters-adult-stress-response-and-brain-monoamines-in-a-sex-dependent-fashion
#18
Rafael Cabbia, Amanda Consoli, Deborah Suchecki
Maternal deprivation (MD) disinhibits the adrenal glands, rendering them responsive to various stressors, including saline injection, and this increased corticosterone (CORT) response can last for as long as 2 h. In the present study, we tested the hypothesis that association of MD on day 11 with a saline injection would alter emotional behavior, CORT response, and brain monoamine levels, in male and female adult rats. Rats were submitted to the novelty suppressed feeding (NSF), the sucrose negative contrast test (SNCT), social investigation test (SIT), and the elevated plus maze (EPM)...
April 1, 2018: Stress: the International Journal on the Biology of Stress
https://www.readbyqxmd.com/read/29601869/d-serine-administration-affects-nitric-oxide-synthase-1-adaptor-protein-and-disc1-expression-in-sex-specific-manner
#19
Kirsten C Svane, Ericka-Kate Asis, Anton Omelchenko, Ansley J Kunnath, Linda M Brzustowicz, Steven M Silverstein, Bonnie L Firestein
Antipsychotic medications are inefficient at treating symptoms of schizophrenia (SCZ), and N-methyl d-aspartate receptor (NMDAR) agonists are potential therapeutic alternatives. As such, these agonists may act on different pathways and proteins altered in the brains of patients with SCZ than do antipsychotic medications. Here, we investigate the effects of administration of the antipsychotic haloperidol and NMDAR agonist d-serine on function and expression of three proteins that play significant roles in SCZ: nitric oxide synthase 1 adaptor protein (NOS1AP), dopamine D2 (D2) receptor, and disrupted in schizophrenia 1 (DISC1)...
March 27, 2018: Molecular and Cellular Neurosciences
https://www.readbyqxmd.com/read/29578580/mao-b-and-comt-genetic-variations-associated-with-levodopa-treatment-response-in-patients-with-parkinson-s-disease
#20
Tiago Furtado Sampaio, Erinaldo Ubirajara Damasceno Dos Santos, Gessica Dayane Cordeiro de Lima, Rute Salgues Gueiros Dos Anjos, Ronaldo Celerino da Silva, Amdore Guescel C Asano, Nadja Maria Jorge Asano, Sergio Crovella, Paulo Roberto Eleutério de Souza
The most commonly used Parkinson's disease (PD) treatment is the replacement of dopamine by its levodopa precursor (l-dopa). Monoamine oxidase-B (MAO-B) and catechol-o-methyl transferase (COMT) are enzymes involved in the metabolism and regulation of dopamine availability. In our study we investigated the possible relation among selected single-nucleotide polymorphisms (SNPs) in the MAO-B (rs1799836) and COMT (rs4680) genes and the therapeutic response to levodopa (l-dopa). A total of 162 Brazilian patients from the Pro-Parkinson service of Clinics Hospital of Pernambuco diagnosed with sporadic PD and treated with levodopa were enrolled...
March 26, 2018: Journal of Clinical Pharmacology
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