bluuebunny/crossref_metadata_2025_split huggingface dataset:
Neurobiology and Genetics of ADHD in Adults
Authors: Spencer Thomas J. 
Published: August 2016

AbstractTreatment of attention-deficit/hyperactivity disorder (ADHD) may positively impact the neurobiology of adult patients with ADHD. Treatment may also minimize impairment from core symptoms and may alter the course of co-morbid disorders such as depression and substance use disorder. However, much of the information on stimulant use in adult ADHD comes from studies conducted in children, and it remains unclear whether there is a difference between children and adults when it comes to the side effects and tolerability of ADHD treatments. It is known that clinical presentation differs between adults and children, with adults demonstrating a higher percentage of mood disorders. Current treatments for adult ADHD include psychosocial therapies and pharmacologic therapies, the latter of which include the stimulants d-methylphenidate extended release (XR), OROS methylphenidate, lisdexamfetamine, and mixed amphetamine salts XR; and the nonstimulant atomoxetine, a selective norepinephrine reuptake inhibitor. There is need for additional study of treatment strategies for adult ADHD. Although all classes of ADHD medications are approved in adults, there are fewer approved formulations for adults than for children. Efficacy in adults is more subjective than in children, which may affect how efficacy rates for adult treatments are calculated. Adults also present a greater diversion risk than children. In addition, there are several new and emerging medication treatments worth considering.This Expert Roundtable Supplement represents part 2 of a 3-part supplement series on adult ADHD led by Lenard A. Adler, MD. In this activity, Thomas J. Spencer, MD, discusses the neurobiology and genetics of adult ADHD; Mark A. Stein, PhD, discusses stimulant therapy; and Jeffrey H. Newcorn, MD, reviews nonstimulants and psychosocial treatments.
Neurobiology and Treatment of Compulsive Hoarding
Authors: Saxena Sanjaya 
Published: August 2016

AbstractCompulsive hoarding is a common and often disabling neuropsychiatric disorder. This article reviews the phenomenology, etiology, neurobiology, and treatment of compulsive hoarding. Compulsive hoarding is part of a discrete clinical syndrome that includes difficulty discarding, urges to save, clutter, excessive acquisition, indecisiveness, perfectionism, procrastination, disorganization, and avoidance. Epidemiological and taxometric studies indicate that compulsive hoarding is a separate but related obsessive-compulsive spectrum disorder that is frequently comorbid with obsessive-compulsive disorder (OCD). Compulsive hoarding is a genetically discrete, strongly heritable phenotype. Neuroimaging and neuropsychological studies indicate that compulsive hoarding is neurobiologically distinct from OCD and implicate dysfunction of the anterior cingulate cortex and other ventral and medial prefrontal cortical areas that mediate decision-making, attention, and emotional regulation. Effective treatments for compulsive hoarding include pharmacotherapy and cognitive-behavioral therapy. More research will be required to determine the etiology and pathophysiology of compulsive hoarding, and to develop better treatments for this disorder.
Introduction
Authors: Cummings Jeffrey L. 
Published: August 2016

Alzheimer’s disease (AD) research is progressing rapidly and on multiple fronts. Advances are being made in early diagnosis, neuroimaging, and biomarkers; optimal care uses currently available medications and strategies; and new therapies are emerging. Early diagnosis is necessary for optimal patient management. Biomarkers are critical to early diagnosis, and biomarker development is dependent on better understanding of disease pathophysiology (Slide 1). The discussions in this supplement examine how progress in AD research can be translated into clinical care.Primary care practitioners (PCPs) provide most of the care of patients with AD, and these clinicians are optimally poised to discover new cases emerging among elderly patients. Caregivers are most likely to voice concerns about declining memory in a family member to a PCP before seeking specialty evaluation. PCPs, however, have little time to devote to complex assessments and cannot have specialty-level expertise in all disorders. PCPs must have clinical tools that assist them in rapidly identifying potential problems and triaging them for further evaluation or specialty referral.
New Pharmacotherapeutic Approaches to Obsessive-Compulsive Disorder
Authors: Figee Martijn , Denys Damiaan 
Published: August 2016

AbstractThis article summarizes results of all pharmacotherapy trials for obsessive-compulsive disorder (OCD) published from 2006 to 2008 as well as studies on markers for predicting response to treatment and neurobiological changes induced by pharmacotherapy. Results show that recent developments in the treatment of OCD have been modest and primarily involve evidence for the efficacy of escitalopram and other selective serotonin reuptake inhibitors (SSRIs); augmentation with antipsychotics in treatment-refractory patients and combination treatment with D-cycloserine and cognitive-behavioral therapy has also been effective. The efficacy of serotonin-norepinephrine reuptake inhibitors remains inconclusive. Studies on markers of clinical response have shown inconsistent results, however, duration and severity of OCD and the presence of comorbidities can often identify patients at risk for nonresponse. Lastly, successful treatment with an SSRI results in both serotonergic and dopaminergic changes, but more research is necessary in order to define the biological characteristics of responders and nonresponders.
Fibromyalgia: Key Clinical Domains, Comorbidities, Assessment, And Treatment
Authors: Mease Philip J. 
Published: August 2016

In discussion of the best practices for patients with fibromyalgia (FM), it is key to Introduce commentary about what FM is as a clinical condition, how clinicians should assess for FM, and the pharmacologic approaches to management.The first widely accepted criteria for the classification for FM were published in 1990 as the American College of Rheumatology criteria for FM. However, the condition has long been described in medical history. In the 1800s, a condition similar to FM was labeled “neurasthenia” and was further defined by researchers in the medical literature. During the early 1900s, symptoms associated with FM were labeled “fibrositis,” which was based on the mistaken idea that there were inflammatory changes in peripheral connective tissue. It was not until the mid-1970s when pioneering work by Smythe and Moldofsky defined central nervous system abnormalities, including significant sleep pathology, in patients with this condition that led to the increased recognition by researchers and clinicians that FM was a central pain phenomenon.Following this critical development, use of the term “fibromyalgia” began and was codified in the 1990 criteria, intended for use in research settings to standardize classification of FM. The 1990 criteria classify the condition as involving chronic widespread pain for at least 3 months. Patients must also exhibit tenderness of at least 11 of 18 tender points.
The Influence of Comorbid Anxiety Disorders on the Selection of Antidepressant Medication in Depressed Patients
Authors: Zimmerman Mark 
Published: August 2016

Although there is a wide array of choices of antidepressants, there is little empirical evidence to guide clinicians in their selection. Most reviews of the antidepressant literature, including the American Psychiatric Association's (APA) Practice Guideline for the Treatment of Major Depressive Disorder, conclude that these medications are generally equally effective. Consistent with this, a recent metaanalysis of studies comparing two or more new-generation antidepressants found little evidence that any medication was superior to the others. Although the APA guideline suggests that the choice of antidepressant be based principally on side effects, tolerability, patient preference, and cost, it also reviewed evidence of differential treatment response related to patients' clinical profiles. For patients with nonpsychotic, nonbipolar major depressive disorder (MDD), the guideline indicated that the presence of anxiety symptoms, atypical features, melancholic subtype, symptom severity, and borderline personality disorder may be associated with differential response to antidepressants. Selective serotonin reuptake inhibitors (SSRIs) are recommended for high anxiety, SSRIs and clomipramine for obsessive-compulsive disorder (OCD) symptoms, tricyclic antidepressants (TCAs) for severe depression and melancholia, and SSRIs and monoamine oxidase inhibitors (MAOIs) for atypical depression.What is most striking in the guideline's review is how limited in scope and utility are the data to guide the outpatient psychiatrist in selecting an antidepressant. Melancholia and severe depression are relatively infrequently encountered in the outpatient setting. The most common comorbidities in depressed outpatients are anxiety disorders, but the guideline simply says that bupropion may be anxiogenic and should be avoided, and that although MAOIs may work well in depressed patients with anxiety, other medications are preferred. It does not discuss the possible influence of specific comorbidities on antidepressant selection.
Comorbid HIV Encephalopathy and Cocaine Use as a Risk Factor for New-onset Seizure Disorders
Authors: Kenedi Christopher A. , Joynt Karen E. , Goforth Harold W. 
Published: August 2016

ABSTRACTPatients living with human immunodeficiency virus represent a growing population, and an increased number of central nervous system presentations can be expected over the next decade. Emerging data suggests that both HIV-seropositive patients and cocaine-abusing patients may be at special risk of seizure phenomena. This case report discusses the risks of new-onset seizure activity when these two risk factors converge, which is a common occurrence in this population. Data from the fields of neuroanatomy and neurovirology are presented to explain the heightened risk of this patient population and provide the practitioner with an improved understanding of the central nervous system complexities in HIV.
Genetic Linkage in Bipolar Disorder
Authors: Mathews Carol A. , Reus Victor I. 
Published: August 2016

AbstractBipolar disorder is an etiologically complex syndrome that is dearly heritable. Multiple, genes, working singly or in concert, are likely to cause susceptibility to bipolar disorder. Bipolar disorder genetics has progressed rapidly in the last few decades. However, specific causal genetic mutations for bipolar disorder have not been identified. Both candidate gene studies and complete genome screens have been conducted. They have provided compelling evidence for several potential bipolar disorder susceptibility loci in several regions of the genome. The strongest evidence suggests that bipolar disorder susceptibility loci may lie in one or more genomic regions on chromosomes 18, 4, and 21. Other regions of interest, including those on chromosomes 5 and 8, are also under investigation. New approaches, such as the use of genetically isolated populations and the use of endophenotypes for bipolar disorder, hold promise for continued advancement in the search to identify specific bipolar disorder genes.
Treatment of Acute Mania
Authors: Holtzheimer Paul E. , Neumaier John F. 
Published: August 2016

AbstractMood stabilizers have evolved considerably over the past decade. Lithium, divalproex, and olanzapine are currently Food and Drug Administration-approved for the treatment of acute mania. A number of new and traditional medications have also been tested and are commonly used in clinical practice. Several strategies for managing treatment-resistant mania have been suggested, but few have been rigorously tested. Emphases on rapid stabilization and fewer side effects have raised the bar for what is expected from mood stabilizers and the successful treatment of mania involves a delicate balance between swiftness, short-term tolerability, and long-term safety.
Antidepressant Effects of Atypical Antipsychotics
Authors: Perlis Roy H. 
Published: August 2016

Studies have shown that there is some efficacy for a number of agents, most notably lithium, in treating bipolar depression. However, the studies also highlight the unfortunate reality that many patients fail to respond adequately to first-line therapies and that there is a need to identify additional options for patients and clinicians. The atypical antipsychotics clozapine, olanzapine, quetiapine, risperidone, ziprasidone, and aripiprazole, have been the focus of increased interest in the treatment of bipolar depression.The use of antipsychotics in the treatment of depressive episodes is not a particularly novel idea. In 1982, Robertson and Trimble reviewed 34 studies examining the use of typical antipsychotics to augment an antidepressant and noticed modest but generally consistent benefits. More widespread use of these agents in the management of depression has been limited, however, because of concerns about the long-term risk of tardive dyskinesia and the induction of extrapyramidal symptoms that often mimic depressive symptoms.Clozapine, the first of the atypicals, was applied initially in the treatment of schizophrenia and schizoaffective disorder, where antidepressant effects were noted during open treatment. Subsequent case series described some benefit in dysphoric manias in bipolar disorder as well.Much of the inditect evidence for antidepressant effects of the atypicals came from studies in major depressive disorder (MDD). For example, a series of eight patients with MDD who failed treatment with a selective serotonin reuptake inhibitor (SSRI) achieved marked and rapid response when risperidone was added to the SSRI. All patients remitted within 1 week; Hamilton Rating Scale for Depression score in these patients declined from a mean of 20.5 to a mean of 2.4 (Slide 11). A subsequent series of 30 patients yielded similar results.
Kriminalprognosen in der Praxis
Authors: Rettenberger Martin , Eher Reinhard , Desmarais Sarah L. , Hurducas Cristina , Arbach-Lucioni Karin , Condemarin Carolina , Dean Kimberlie , Doyle Michael , Folino Jorge O. , Godoy-Cervera Verónica , Grann Martin , Ho Robyn Mei Yee , Large Matthew M. , Pham Thierry H. , Nielsen Louise Hjort , Rebocho Maria Francisca , Reeves Kim A. , Ruiter Corine de , Seewald Katharina , Singh Jay P. 
Published: August 2016

Zusammenfassung. Einschätzungen über das Risiko zukünftiger Gewalttätigkeit sind ein fester Bestandteil der Arbeit von Psychologinnen und Psychologen, wobei bis heute wenig darüber bekannt ist, in welcher Form kriminalprognostische Einschätzungen in der alltäglichen Berufspraxis vorgenommen werden. Durch die vorliegende Forschungsarbeit wird erstmals ein Einblick in die kriminalprognostische Praxis in Deutschland gegeben. In der vorliegenden Studie werden die Ergebnisse des International Risk Surveys (IRiS; Singh et al., 2014 ) ausgewertet, an der weltweit 2135 Personen aus 44 Ländern teilgenommen haben. Aus Deutschland wurden 97 Psychologinnen und Psychologen sowie Angehörige anderer Berufsgruppen über ihre kriminalprognostischen Tätigkeiten befragt. Die Daten zeigen, dass mittlerweile in der Praxis mehrheitlich auf standardisierte Prognoseinstrumente zurückgegriffen wird. Die Instrumente werden nicht nur für die prognostische Einschätzung über das zukünftige Gewaltrisiko als nützlich eingestuft, sondern auch im Hinblick auf die Therapieindikation sowie die verlaufsdiagnostische Untersuchung von Behandlungs- und Betreuungsfällen als hilfreich beurteilt.
Root microbiota dynamics of perennial Arabis alpina are dependent on soil residence time but independent of flowering time
Authors: Dombrowski Nina , Schlaeppi Klaus , Agler Matthew T , Hacquard Stéphane , Kemen Eric , Garrido-Oter Ruben , Wunder Jörg , Coupland George , Schulze-Lefert Paul 
Published: August 2016

Abstract
Recent field and laboratory experiments with perennial Boechera stricta and annual Arabidopsis thaliana suggest that the root microbiota influences flowering time. Here we examined in long-term time-course experiments the bacterial root microbiota of the arctic-alpine perennial Arabis alpina in natural and controlled environments by 16S rRNA gene profiling. We identified soil type and residence time of plants in soil as major determinants explaining up to 15% of root microbiota variation, whereas environmental conditions and host genotype explain maximally 11% of variation. When grown in the same soil, the root microbiota composition of perennial A. alpina is largely similar to those of its annual relatives A. thaliana and Cardamine hirsuta. Non-flowering wild-type A. alpina and flowering pep1 mutant plants assemble an essentially indistinguishable root microbiota, thereby uncoupling flowering time from plant residence time-dependent microbiota changes. This reveals the robustness of the root microbiota against the onset and perpetual flowering of A. alpina. Together with previous studies, this implies a model in which parts of the root microbiota modulate flowering time, whereas, after microbiota acquisition during vegetative growth, the established root-associated bacterial assemblage is structurally robust to perturbations caused by flowering and drastic changes in plant stature.
Modeling succession of key resource-harvesting traits of mixotrophic plankton
Authors: Berge Terje , Chakraborty Subhendu , Hansen Per Juel , Andersen Ken H 
Published: August 2016

Abstract
Unicellular eukaryotes make up the base of the ocean food web and exist as a continuum in trophic strategy from pure heterotrophy (phagotrophic zooplankton) to pure photoautotrophy (‘phytoplankton’), with a dominance of mixotrophic organisms combining both strategies. Here we formulate a trait-based model for mixotrophy with three key resource-harvesting traits: photosynthesis, phagotrophy and inorganic nutrient uptake, which predicts the trophic strategy of species throughout the seasonal cycle. Assuming that simple carbohydrates from photosynthesis fuel respiration, and feeding primarily provides building blocks for growth, the model reproduces the observed light-dependent ingestion rates and species-specific growth rates with and without prey from the laboratory. The combination of traits yielding the highest growth rate suggests high investments in photosynthesis, and inorganic nutrient uptake in the spring and increased phagotrophy during the summer, reflecting general seasonal succession patterns of temperate waters. Our trait-based model presents a simple and general approach for the inclusion of mixotrophy, succession and evolution in ecosystem models.
Crystal structures of APOBEC3G N-domain alone and its complex with DNA
Authors: Xiao Xiao , Li Shu-Xing , Yang Hanjing , Chen Xiaojiang S. 
Published: August 2016

AbstractAPOBEC3G (A3G) is a potent restriction factor of HIV-1. The N-terminal domain of A3G (A3G-CD1) is responsible for oligomerization and nucleic acid binding, both of which are essential for anti-HIV activity. As a countermeasure, HIV-1 viral infectivity factor (Vif) binds A3G-CD1 to mediate A3G degradation. The structural basis for the functions of A3G-CD1 remains elusive. Here, we report the crystal structures of a primate A3G-CD1 (rA3G-CD1) alone and in complex with single-stranded DNA (ssDNA). rA3G-CD1 shares a conserved core structure with the previously determined catalytic APOBECs, but displays unique features for surface charge, dimerization and nucleic acid binding. Its co-crystal structure with ssDNA reveals how the conformations of loops and residues surrounding the Zn-coordinated centre (Zn-centre) change upon DNA binding. The dimerization interface of rA3G-CD1 is important for oligomerization, nucleic acid binding and Vif-mediated degradation. These findings elucidate the molecular basis of antiviral mechanism and HIV-Vif targeting of A3G.
Increased activity in frontal motor cortex compensates impaired speech perception in older adults
Authors: Du Yi , Buchsbaum Bradley R. , Grady Cheryl L. , Alain Claude 
Published: August 2016

AbstractUnderstanding speech in noisy environments is challenging, especially for seniors. Although evidence suggests that older adults increasingly recruit prefrontal cortices to offset reduced periphery and central auditory processing, the brain mechanisms underlying such compensation remain elusive. Here we show that relative to young adults, older adults show higher activation of frontal speech motor areas as measured by functional MRI during a syllable identification task at varying signal-to-noise ratios. This increased activity correlates with improved speech discrimination performance in older adults. Multivoxel pattern classification reveals that despite an overall phoneme dedifferentiation, older adults show greater specificity of phoneme representations in frontal articulatory regions than auditory regions. Moreover, older adults with stronger frontal activity have higher phoneme specificity in frontal and auditory regions. Thus, preserved phoneme specificity and upregulation of activity in speech motor regions provide a means of compensation in older adults for decoding impoverished speech representations in adverse listening conditions.
Observed vulnerability of Filchner-Ronne Ice Shelf to wind-driven inflow of warm deep water
Authors: Darelius E. , Fer I. , Nicholls K. W. 
Published: August 2016

AbstractThe average rate of melting at the base of the large Filchner-Ronne Ice Shelf in the southern Weddell Sea is currently low, but projected to increase dramatically within the next century. In a model study, melt rates increase as changing ice conditions cause a redirection of a coastal current, bringing warm water of open ocean origin through the Filchner Depression and into the Filchner Ice Shelf cavity. Here we present observations from near Filchner Ice Shelf and from the Filchner Depression, which show that pulses of warm water already arrive as far south as the ice front. This southward heat transport follows the eastern flank of the Filchner Depression and is found to be directly linked to the strength of a wind-driven coastal current. Our observations emphasize the potential sensitivity of Filchner-Ronne Ice Shelf melt rates to changes in wind forcing.
Enhanced photon management in silicon thin film solar cells with different front and back interface texture
Authors: Tamang Asman , Hongsingthong Aswin , Jovanov Vladislav , Sichanugrist Porponth , Khan Bakhtiar A. , Dewan Rahul , Konagai Makoto , Knipp Dietmar 
Published: August 2016

AbstractLight trapping and photon management of silicon thin film solar cells can be improved by a separate optimization of the front and back contact textures. A separate optimization of the front and back contact textures is investigated by optical simulations taking realistic device geometries into consideration. The optical simulations are confirmed by experimentally realized 1 μm thick microcrystalline silicon solar cells. The different front and back contact textures lead to an enhancement of the short circuit current by 1.2 mA/cm2 resulting in a total short circuit current of 23.65 mA/cm2 and an energy conversion efficiency of 8.35%.
Synthesis of Arbitrary Quantum Circuits to Topological Assembly
Authors: Paler Alexandru , Devitt Simon J. , Fowler Austin G. 
Published: August 2016

AbstractGiven a quantum algorithm, it is highly nontrivial to devise an efficient sequence of physical gates implementing the algorithm on real hardware and incorporating topological quantum error correction. In this paper, we present a first step towards this goal, focusing on generating correct and simple arrangements of topological structures that correspond to a given quantum circuit and largely neglecting their efficiency. We detail the many challenges that will need to be tackled in the pursuit of efficiency. The software source code can be consulted at https://github.com/alexandrupaler/tqec.