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Bipolar Disorders

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https://www.readbyqxmd.com/read/28425670/electroencephalographic-patterns-of-lithium-poisoning-a-study-of-the-effect-concentration-relationships-in-the-rat
#1
Anne-Sophie Hanak, Isabelle Malissin, Joël Poupon, Patricia Risède, Lucie Chevillard, Bruno Mégarbane
OBJECTIVES: Lithium overdose may result in encephalopathy and electroencephalographic abnormalities. Three poisoning patterns have been identified based on the ingested dose, previous treatment duration and renal function. Whether the severity of lithium-induced encephalopathy depends on the poisoning pattern has not been established. We designed a rat study to investigate lithium-induced encephalopathy and correlate its severity to plasma, erythrocyte, cerebrospinal fluid and brain lithium concentrations previously determined in rat models mimicking human poisoning patterns...
April 20, 2017: Bipolar Disorders
https://www.readbyqxmd.com/read/28421717/cognitive-profiles-in-euthymic-patients-with-bipolar-disorders-results-from-the-face-bd-cohort
#2
Paul Roux, Aurélie Raust, Anne Sophie Cannavo, Valérie Aubin, Bruno Aouizerate, Jean-Michel Azorin, Frank Bellivier, Raoul Belzeaux, Thierry Bougerol, Iréna Cussac, Philippe Courtet, Bruno Etain, Sébastien Gard, Sophie Job, Jean-Pierre Kahn, Marion Leboyer, Emilie Olié, Chantal Henry, Christine Passerieux
OBJECTIVES: Although cognitive deficits are a well-established feature of bipolar disorders (BD), even during periods of euthymia, little is known about cognitive phenotype heterogeneity among patients with BD. METHODS: We investigated neuropsychological performance in 258 euthymic patients with BD recruited via the French network of expert centers for BD. We used a test battery assessing six domains of cognition. Hierarchical cluster analysis of the cross-sectional data was used to determine the optimal number of subgroups and to assign each patient to a specific cognitive cluster...
April 19, 2017: Bipolar Disorders
https://www.readbyqxmd.com/read/28418197/body-mass-index-associates-with-white-matter-microstructure-in-bipolar-depression
#3
Elena Mazza, Sara Poletti, Irene Bollettini, Clara Locatelli, Andrea Falini, Cristina Colombo, Francesco Benedetti
OBJECTIVES: Obesity has been reported in over 60% of bipolar disorder (BD) patients. It worsens the severity of illness, and influences cognition and functional outcomes. White matter (WM) abnormalities are one of the most consistently reported findings in neuroimaging studies of BD. We hypothesized that body mass index (BMI) could correlate with WM integrity in bipolar patients. METHODS: We evaluated BMI in a sample of 164 depressed patients affected by BD. We performed whole-brain tract-based spatial statistics with threshold-free cluster enhancement for the diffusion tensor imaging (DTI) measures of WM integrity: fractional anisotropy; axial, radial, and mean diffusivity...
April 18, 2017: Bipolar Disorders
https://www.readbyqxmd.com/read/28258639/resting-state-functional-connectivity-in-women-with-bipolar-disorder-during-clinical-remission
#4
Sabrina K Syan, Luciano Minuzzi, Mara Smith, Olivia R Allega, Geoffrey Bc Hall, Benicio N Frey
OBJECTIVES: Periods of euthymia in bipolar disorder (BD) serve as a valuable time to study trait-based pathophysiology. The use of resting state functional connectivity (Rs-FC) can aid in the understanding of BD pathophysiology free of task or mood state biases. The present study investigated two unexplored areas of Rs-FC research in bipolar remission: (i) Rs-FC in women, controlling for the potential influence of premenstrual symptoms, and (ii) the use of both independent component analysis (ICA) and seed-based analysis (SBA) to investigate Rs-FC...
March 4, 2017: Bipolar Disorders
https://www.readbyqxmd.com/read/28230325/serum-phosphatidylinositol-as-a-biomarker-for-bipolar-disorder-liability
#5
Emma Em Knowles, Peter J Meikle, Kevin Huynh, Harald Hh Göring, Rene L Olvera, Samuel R Mathias, Ravi Duggirala, Laura Almasy, John Blangero, Joanne E Curran, David C Glahn
OBJECTIVES: Individuals with bipolar disorder (BPD) exhibit alterations in their phospholipid levels. It is unclear whether these alterations are a secondary consequence of illness state, or if phospholipids and illness risk overlap genetically. If the latter were true, then phospholipids might provide key insights into the pathophysiology of the illness. Therefore, we rank-ordered phospholipid classes by their genetic overlap with BPD risk in order to establish which class might be most informative in terms of increasing our understanding of illness pathophysiology...
February 23, 2017: Bipolar Disorders
https://www.readbyqxmd.com/read/28346769/have-your-say
#6
EDITORIAL
Gin S Malhi, K N Roy Chengappa
No abstract text is available yet for this article.
February 2017: Bipolar Disorders
https://www.readbyqxmd.com/read/28346768/defining-the-role-of-sgas-in-the-long-term-treatment-of-bipolar-disorder
#7
Gin S Malhi, Grace Morris, Amber Hamilton, Tim Outhred, Pritha Das
No abstract text is available yet for this article.
February 2017: Bipolar Disorders
https://www.readbyqxmd.com/read/28276657/investigation-of-correlations-between-dna-methylation-suicidal-behavior-and-aging
#8
Richie Jeremian, Yi-An Chen, Vincenzo De Luca, John B Vincent, James L Kennedy, Clement C Zai, John Strauss
OBJECTIVES: Suicidal behavior (SB) is a major cause of mortality for patients diagnosed with bipolar disorder (BD). In this study, we investigated epigenetic differences in BD participants with and without a history of SB. METHODS: We used suicidality scores constructed from Schedule for Clinical Assessments in Neuropsychiatry (SCAN) interview questions about suicidal thought and behavior to identify individuals from a BD cohort of n=452; participants with the most extreme high (H-SB, n=18) and most extreme low (L-SB, n=22) scores were used as cases and controls, respectively...
February 2017: Bipolar Disorders
https://www.readbyqxmd.com/read/28263040/influence-of-cognitive-reserve-on-neuropsychological-functioning-in-bipolar-disorder-findings-from-a-5-year-longitudinal-study
#9
Kristin H Hinrichs, Rebecca E Easter, Kaley Angers, Bethany Pester, Zongshan Lai, David F Marshall, Masoud Kamali, Melvin McInnis, Scott A Langenecker, Kelly A Ryan
OBJECTIVES: The present study examined the 5-year longitudinal course of cognitive functioning in a large sample of well-characterized patients with bipolar disorder (BP), compared to healthy controls (HCs), and the influence of cognitive reserve factors (e.g., education and IQ) on cognitive change over time. METHODS: Participants included 159 individuals diagnosed with BP and 54 HCs recruited as part of a longitudinal naturalistic study of BP who had completed neuropsychological testing at the time of their enrollment and again 5 years later...
February 2017: Bipolar Disorders
https://www.readbyqxmd.com/read/28239952/increased-hippocampal-thalamus-and-amygdala-volume-in-long-term-lithium-treated-bipolar-i-disorder-patients-compared-with-unmedicated-patients-and-healthy-subjects
#10
Carlos López-Jaramillo, Cristian Vargas, Ana M Díaz-Zuluaga, Juan David Palacio, Gabriel Castrillón, Carrie Bearden, Eduard Vieta
OBJECTIVE: Magnetic resonance imaging (MRI) studies in bipolar I disorder (BD-I) suggest that lithium is associated with increased volumes of cortico-limbic structures. However, more rigorous control of confounding factors is needed to obtain further support for this hypothesis. The aim of the present study was to assess differences in brain volumes among long-term lithium-treated BD-I patients, unmedicated BD-I patients, and healthy controls. METHODS: This was a cross-sectional study with 32 euthymic BD-I patients (16 on lithium monotherapy for a mean of 180 months, and 16 receiving no medication for at least the 2 months prior to the study) and 20 healthy controls...
February 2017: Bipolar Disorders
https://www.readbyqxmd.com/read/28239946/a-voxel-based-diffusion-tensor-imaging-study-in-unipolar-and-bipolar-depression
#11
Jonathan Repple, Susanne Meinert, Dominik Grotegerd, Harald Kugel, Ronny Redlich, Katharina Dohm, Dario Zaremba, Nils Opel, Christian Buerger, Katharina Förster, Theresa Nick, Volker Arolt, Walter Heindel, Michael Deppe, Udo Dannlowski
OBJECTIVE: The absence of neurobiological diagnostic markers of bipolar disorder (BD) leads to its frequent misdiagnosis as unipolar depression (UD). We investigated if changes in fractional anisotropy (FA) could help to differentiate BD from UD in the state of depression. METHODS: Using diffusion tensor imaging (DTI) we employed a voxel-based analysis approach to examine fractional anisotropy (FA) in 86 patients experiencing an acute major depressive episode according to DSM-IV (N=39 BD, mean age 39...
February 2017: Bipolar Disorders
https://www.readbyqxmd.com/read/28176421/incidence-and-predictors-of-suicide-attempts-in-bipolar-i-and-ii-disorders-a-5-year-follow-up-study
#12
Sanna Pallaskorpi, Kirsi Suominen, Mikko Ketokivi, Hanna Valtonen, Petri Arvilommi, Outi Mantere, Sami Leppämäki, Erkki Isometsä
OBJECTIVES: Few long-term studies on bipolar disorder (BD) have investigated the incidence and risk factors of suicide attempts (SAs) specifically related to illness phases. We examined the incidence of SAs during different phases of BD in a long-term prospective cohort of bipolar I (BD-I) and bipolar II (BD-II) patients, and risk factors specifically for SAs during major depressive episodes (MDEs). METHODS: In the Jorvi Bipolar Study (JoBS), 191 BD-I and BD-II patients were followed using life-chart methodology...
February 2017: Bipolar Disorders
https://www.readbyqxmd.com/read/28160351/comparison-of-treatment-outcome-using-two-definitions-of-rapid-cycling-in-subjects-with-bipolar-ii-disorder
#13
Jay D Amsterdam, Lorenzo Lorenzo-Luaces, Robert J DeRubeis
OBJECTIVES: We examined differences in treatment outcome between Diagnostic and Statistical Manual Fourth Edition (DSM-IV)-defined rapid cycling and average lifetime-defined rapid cycling in subjects with bipolar II disorder. We hypothesized that, compared with the DSM-IV definition, the average lifetime definition of rapid cycling may better identify subjects with a history of more mood lability and a greater likelihood of hypomanic symptom induction during long-term treatment. METHODS: Subjects ≥18 years old with a bipolar II major depressive episode (n=129) were categorized into DSM-IV- and average lifetime-defined rapid cycling and prospectively treated with either venlafaxine or lithium monotherapy for 12 weeks...
February 2017: Bipolar Disorders
https://www.readbyqxmd.com/read/28098427/emergence-of-mania-in-two-middle-aged-patients-with-a-history-of-unipolar-treatment-refractory-depression-receiving-vagus-nerve-stimulation
#14
Naji C Salloum, Marie C Walker, Sunil Gangwani, Charles R Conway
OBJECTIVES: We report on two patients who experienced emergence of full manic symptoms while receiving vagal nerve stimulation (VNS). METHODS: Two patients, both with a well-documented and verified history of longstanding unipolar depression, were initiated on VNS for treatment of their severe major depressive episodes. RESULTS: The two patients had emergence of full manic symptoms after 8 and 9 months of VNS, respectively. Manic symptoms were adequately managed with standard treatments (mood stabilizer and electroconvulsive therapy) and VNS was continued in the two subjects for up to 5 years without any further occurrences of manic/hypomanic episodes...
February 2017: Bipolar Disorders
https://www.readbyqxmd.com/read/28063207/lithiumeter-version-2-0
#15
Gin S Malhi, Samuel Gershon, Tim Outhred
BACKGROUND: The Lithiumeter was developed as a visual and practical guide for determining lithium levels in the management of bipolar disorder (BD). It appears to have been well received, as evidenced by its increasing popularity amongst doctors as a deskside clinical aide, and adoption and reproduction of the schematic in clinical guidelines and texts. However, since its publication 5 years ago, key basic neuroscience and clinical research developments pertaining to lithium have significantly advanced our understanding, necessitating further refinement of guidance concerning the practicalities of lithium therapy...
December 2016: Bipolar Disorders
https://www.readbyqxmd.com/read/28063206/journal-expansion-bipolar-big-bang-to-events-on-the-horizon
#16
EDITORIAL
Gin S Malhi, K N Roy Chengappa, Samuel Gershon
No abstract text is available yet for this article.
December 2016: Bipolar Disorders
https://www.readbyqxmd.com/read/27995766/antidepressant-treatment-response-in-bipolar-ii-disorder
#17
Frederick Cassidy
No abstract text is available yet for this article.
December 2016: Bipolar Disorders
https://www.readbyqxmd.com/read/27995733/dentate-gyrus-cornu-ammonis-ca-4-volume-is-decreased-and-associated-with-depressive-episodes-and-lipid-peroxidation-in-bipolar-ii-disorder-longitudinal-and-cross-sectional-analyses
#18
Torbjørn Elvsåshagen, Pedro Zuzarte, Lars T Westlye, Erlend Bøen, Dag Josefsen, Birgitte Boye, Per K Hol, Ulrik F Malt, L Trevor Young, Ana C Andreazza
OBJECTIVES: Reduced dentate gyrus volume and increased oxidative stress have emerged as potential pathophysiological mechanisms in bipolar disorder. However, the relationship between dentate gyrus volume and peripheral oxidative stress markers remains unknown. Here, we examined dentate gyrus-cornu ammonis (CA) 4 volume longitudinally in patients with bipolar II disorder (BD-II) and healthy controls and investigated whether BD-II is associated with elevated peripheral levels of oxidative stress...
December 2016: Bipolar Disorders
https://www.readbyqxmd.com/read/27995725/the-dysregulated-brain-consequences-of-spatial-and-temporal-brain-complexity-for-bipolar-disorder-pathophysiology-and-diagnosis
#19
Bartholomeus Cm 'Benno' Haarman, Rixt F Riemersma-Van der Lek, Huibert Burger, Hemmo A Drexhage, Willem A Nolen
Increasingly, evidence has been accumulating emphasizing the importance of looking at bipolar disorder (BD) from a neurodevelopmental and transdimensional perspective to better understand its origins and its course. In this overview article, the problems facing pathophysiological psychiatric research in BD are addressed and interpreted in the light of brain complexity. Brain complexity can be split into spatial complexity, which constitutes the physiological levels of the central nervous system (i.e., the genetic, molecular, cellular, neuronal circuit and phenomenological levels), and temporal complexity, that is, neurodevelopment...
December 2016: Bipolar Disorders
https://www.readbyqxmd.com/read/27995690/an-investigation-of-mental-imagery-in-bipolar-disorder-exploring-the-mind-s-eye
#20
Martina Di Simplicio, Fritz Renner, Simon E Blackwell, Heather Mitchell, Hannah J Stratford, Peter Watson, Nick Myers, Anna C Nobre, Alex Lau-Zhu, Emily A Holmes
OBJECTIVES: Mental imagery abnormalities occur across psychopathologies and are hypothesized to drive emotional difficulties in bipolar disorder (BD). A comprehensive assessment of mental imagery in BD is lacking. We aimed to test whether (i) mental imagery abnormalities (abnormalities in cognitive stages and subjective domains) occur in BD relative to non-clinical controls; and (ii) to determine the specificity of any abnormalities in BD relative to depression and anxiety disorders. METHODS: Participants included 54 subjects in the BD group (depressed/euthymic; n=27 in each subgroup), subjects with unipolar depression (n=26), subjects with anxiety disorders (n=25), and non-clinical controls (n=27) matched for age, gender, ethnicity, education, and premorbid IQ...
December 2016: Bipolar Disorders
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