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biomarker & suicide

E Rizos, N Siafakas, E Skourti, C Papageorgiou, J Tsoporis, T H Parker, D I Christodoulou, D A Spandidos, E Katsantoni, V Zoumpourlis
Schizophrenia (SZ) and cancer (Ca) have a broad spectrum of clinical phenotypes and a complex biological background, implicating a large number of genetic and epigenetic factors. SZ is a chronic neurodevelopmental disorder signified by an increase in the expression of apoptotic molecular signals, whereas Ca is conversely characterized by an increase in appropriate molecular signaling that stimulates uncontrolled cell proliferation. The rather low risk of developing Ca in patients suffering from SZ is a hypothesis that is still under debate...
October 14, 2016: Molecular Medicine Reports
Marcin Siwek, Magdalena Sowa-Kućma, Krzysztof Styczeń, Paulina Misztak, Rafał J Nowak, Bernadeta Szewczyk, Dominika Dudek, Janusz K Rybakowski, Gabriel Nowak, Michael Maes
To examine cytokine receptor biomarkers in bipolar disorder (BD), we recruited 133 well-phenotyped BD patients and 50 normal controls and measured serum levels of soluble interleukin 1 receptor antagonist (sIL-1RA), soluble interleukin-2 receptor (sIL-2R), sIL-6R, and tumor necrosis factor receptor 60 and 80 kDa (sTNFR60/80). sIL-1RA and sTNFR80 are significantly higher in BD than in controls and sTNFR80 and higher in melancholic than in non-melancholic patients and controls. Kapczinski's stages 3 + 4 are characterized by lowered sIL-2R and increased sTNFR80 levels...
September 23, 2016: Molecular Neurobiology
Yongtao Yang, Jin Chen, Chengyu Liu, Liang Fang, Zhao Liu, Jing Guo, Ke Cheng, Chanjuan Zhou, Yuan Zhan, Narayan D Melgiri, Liang Zhang, Jiaju Zhong, Jianjun Chen, Chenglong Rao, Peng Xie
Although an association between major depressive disorder (MDD) and suicide exists, most depressed patients never attempt suicide. An improved understanding of the factors contributing to suicidal risk in MDD can provide direction for suicide predictor development. In MDD suicide attempters (MDD-SA), MDD non-attempters (MDD-NA), and healthy controls (HC) (n = 12 each group), complementary plasma proteomics identified 45 differential proteins mapped to coagulation and inflammation, 25 of which underwent Western blotting...
2016: Scientific Reports
Robert J Fox, Christopher S Coffey, Merit E Cudkowicz, Trevis Gleason, Andrew Goodman, Eric C Klawiter, Kazuko Matsuda, Michelle McGovern, Robin Conwit, Robert Naismith, Akshata Ashokkumar, Robert Bermel, Dixie Ecklund, Maxine Koepp, Jeffrey Long, Sneha Natarajan, Srividya Ramachandran, Thomai Skaramagas, Brenda Thornell, Jon Yankey, Mark Agius, Khurram Bashir, Bruce Cohen, Patricia Coyle, Silvia Delgado, Dana Dewitt, Angela Flores, Barbara Giesser, Myla Goldman, Burk Jubelt, Neil Lava, Sharon Lynch, Augusto Miravalle, Harold Moses, Daniel Ontaneda, Jai Perumal, Michael Racke, Pavle Repovic, Claire Riley, Christopher Severson, Shlomo Shinnar, Valerie Suski, Bianca Weinstock-Gutman, Vijayshree Yadav, Aram Zabeti
BACKGROUND: Primary and secondary progressive multiple sclerosis (MS), collectively called progressive multiple sclerosis (PMS), is characterized by gradual progression of disability. The current anti-inflammatory treatments for MS have little or no efficacy in PMS in the absence of obvious active inflammation. Optimal biomarkers for phase II PMS trials is unknown. Ibudilast is an inhibitor of macrophage migration inhibitor factor and phosphodiesterases-4 and -10 and exhibits possible neuroprotective properties...
September 2016: Contemporary Clinical Trials
Ries Simons
Since the tragic accident of Germanwings flight 4U9525, there has been discussion about methods to identify and prevent suicidality in pilots. Neurogenetic scientists claim that biomarker tests for suicidality as part of healthcare assessments may lead to early identification of suicidal behavior. In this commentary the value of these gene expression biomarkers for aeromedical purposes is evaluated based on relevant literature. It is concluded that the currently identified biomarkers for suicidality need thorough validation before they can be used...
July 2016: Aerospace Medicine and Human Performance
Maria A Oquendo, Hanga Galfalvy, Gregory M Sullivan, Jeffrey M Miller, Matthew M Milak, M Elizabeth Sublette, Sebastian Cisneros-Trujillo, Ainsley K Burke, Ramin V Parsey, J John Mann
Importance: Biomarkers that predict suicidal behavior, especially highly lethal behavior, are urgently needed. In cross-sectional studies, individuals with depression who attempt suicide have lower midbrain serotonin transporter binding potential compared with those who do not attempt suicide, and higher serotonin1A binding potential in the raphe nuclei (RN) is associated with greater lethality of past suicide attempts and suicidal intent and ideation. Objectives: To determine whether serotonin transporter binding potential in the lower midbrain predicts future suicide attempts and whether higher RN serotonin1A binding potential predicts future suicidal ideation and intent and lethality of future suicide attempts...
October 1, 2016: JAMA Psychiatry
Udaya Ralapanawa, Kushalee Poornima Jayawickreme, Ekanayake Mudiyanselage Madhushanka Ekanayake, A M S Dhammika Menike Dissanayake
BACKGROUND: Sri Lanka has a high suicide rate, with more than 40 % of poisoning admissions due to overdose of drugs with Paracetamol being the commonest. Data regarding cardiotoxicity to paracetamol is very minimal though hepatotoxicity following poisoning is well studied. Paracetamol cardiotoxicity has rarely been clinically significant and may have well been overlooked. The possibility that paracetamol overdose might be directly cardiotoxic has been the subject of a few reports. Unexplained deaths and electrocardiographic changes associated with paracetamol poisoning have also been reported in which cardiac origin cannot be clearly ruled out...
2016: BMC Pharmacology & Toxicology
Erin A Hazlett, Nicholas J Blair, Nicolas Fernandez, Kathryn Mascitelli, M Mercedes Perez-Rodriguez, Antonia S New, Raymond R Goetz, Marianne Goodman
UNLABELLED: Recent studies demonstrate that veterans exhibit higher suicide risk compared with the general U.S. POPULATION: A prior suicide attempt is a well-documented predictor of suicide death. Despite increased attention to clinical risk factors of suicide and efforts to develop psychosocial interventions to reduce suicide risk, the underlying biological factors that confer this risk are not well understood. This study examined affect-modulated startle (AMS) during a series of intermixed unpleasant, neutral, and pleasant pictures in a sample of 108 demographically-matched veterans at low (passive ideators: n = 26) and high risk (active ideators: n = 29; single attempters: n = 28; and multiple attempters: n = 25) for suicide based on the Columbia Suicide Severity Rating Scale...
October 2016: Psychophysiology
A B Grierson, I B Hickie, S L Naismith, J Scott
Research in developmental psychopathology and clinical staging models has increasingly sought to identify trans-diagnostic biomarkers or neurocognitive deficits that may play a role in the onset and trajectory of mental disorders and could represent modifiable treatment targets. Less attention has been directed at the potential role of cognitive-emotional regulation processes such as ruminative response style. Maladaptive rumination (toxic brooding) is a known mediator of the association between gender and internalizing disorders in adolescents and is increased in individuals with a history of early adversity...
September 2016: Psychological Medicine
Rodrigo B Mansur, Camila M Santos, Lucas B Rizzo, Elson Asevedo, Graccielle R Cunha, Mariane N Noto, Mariana Pedrini, Maiara Zeni-Graiff, Quirino Cordeiro, Maj Vinberg, Flavio Kapczinski, Roger S McIntyre, Elisa Brietzke
OBJECTIVES: The neurotrophin brain-derived neurotrophic factor (BDNF) has been proposed as a potential biomarker in bipolar disorder (BD). However, current evidence is limited and results have been highly heterogeneous. This study aimed to assess the moderating effect of impaired glucose metabolism (IGM) on plasma levels of BDNF in individuals with BD, and on the relationship between BDNF and variables of illness course. METHODS: We measured and compared the plasma levels of BDNF in individuals with BD (n=57) and healthy controls (n=26)...
June 2016: Bipolar Disorders
Giulia Serra, Mai Uchida, Claudia Battaglia, Maria Pia Casini, Lavinia De Chiara, Joseph Biederman, Stefano Vicari, Janet Wozniak
Pediatric Bipolar Disorder (BD) is a highly morbid pediatric psychiatric disease, consistently associated with family psychiatric history of mood disorders and associated with high levels of morbidity and disability and with a great risk of suicide. While there is a general consensus on the symptomatology of depression in childhood, the phenomenology of pediatric mania is still highly debated and the course and long-term outcome of pediatric BD still need to be clarified. We reviewed the available studies on the phenomenology of pediatric mania with the aim of summarizing the prevalence, demographics, clinical correlates and course of these two types of pediatric mania...
June 6, 2016: Current Neuropharmacology
M O Trépanier, K E Hopperton, R Mizrahi, N Mechawar, R P Bazinet
Schizophrenia is a psychiatric disorder which has a lifetime prevalence of ~1%. Multiple candidate mechanisms have been proposed in the pathogenesis of schizophrenia. One such mechanism is the involvement of neuroinflammation. Clinical studies, including neuroimaging, peripheral biomarkers and randomized control trials, have suggested the presence of neuroinflammation in schizophrenia. Many studies have also measured markers of neuroinflammation in postmortem brain samples from schizophrenia patients. The objective of this study was to conduct a systematic search of the literature on neuroinflammation in postmortem brains of schizophrenia patients indexed in MEDLINE, Embase and PsycINFO...
August 2016: Molecular Psychiatry
Q Wang, X Su, X Jiang, X Dong, Y Fan, J Zhang, C Yu, W Gao, S Shi, J Jiang, W Jiang, T Wei
Clinical depression is one of the most common and debilitating psychiatric disorders and contributes to increased risks of disability and suicide. Differentially expressed serum proteins may serve as biomarkers for diagnosing depression. In this study, samples from depressed patients are aggregated into a pool (22×100μL serum was used) and samples from healthy volunteers are aggregated into the other pool (20×100μL serum was used). Isobaric tag for relative and absolute quantitation (iTRAQ) technology and tandem mass spectrometry were employed to screen for differentially expressed serum protein in two separate pools...
August 25, 2016: Neuroscience
S Rangaraju, D F Levey, K Nho, N Jain, K D Andrews, H Le-Niculescu, D R Salomon, A J Saykin, M Petrascheck, A B Niculescu
Antidepressants have been shown to improve longevity in C. elegans. It is plausible that orthologs of genes involved in mood regulation and stress response are involved in such an effect. We sought to understand the underlying biology. First, we analyzed the transcriptome from worms treated with the antidepressant mianserin, previously identified in a large-scale unbiased drug screen as promoting increased lifespan in worms. We identified the most robust treatment-related changes in gene expression, and identified the corresponding human orthologs...
August 2016: Molecular Psychiatry
Rana R McKay, Guillermo De Velasco, Lillian Werner, Joaquim Bellmunt, Lauren Harshman, Christopher Sweeney, Jonathan E Rosenberg, Michelle Hirsch, Sabina Signoretti, Eliezer M Van Allen, Meghara Walsh, Ulka Vaishampayan, David F McDermott, Toni K Choueiri
BACKGROUND: The phosphatidylinositol-3 kinase (PI3K)/Akt/mammalian target of rapamycin (mTOR) pathway is dysregulated in patients with metastatic renal cell carcinoma (mRCC). Buparlisib is a pan-PI3K inhibitor with activity in advanced solid tumors. The primary objective of the current study was to determine the maximum tolerated dose (MTD) and dose-limiting toxicities of buparlisib and bevacizumab in patients with mRCC. Secondary objectives included efficacy, biomarker discovery, and additional toxicity...
August 1, 2016: Cancer
S Schiavone, M Neri, E Mhillaj, M G Morgese, S Cantatore, M Bove, I Riezzo, P Tucci, C Pomara, E Turillazzi, V Cuomo, L Trabace
Recent evidence points towards a role of oxidative stress in suicidality. However, few studies were carried out on the sources of reactive oxygen species (ROS) in subjects with suicidal behaviour. We have previously demonstrated that the NADPH oxidase NOX2-derived oxidative stress has a major role in the development of neuropathological alterations observed in an animal model of psychosis. Here, we investigated the possible increase in NOX2 in post mortem brain samples of subjects who died by asphyctic suicide (AS) compared with controls (CTRL) and subjects who died by non-suicidal asphyxia (NSA)...
2016: Translational Psychiatry
Scott T Wilson, Megan Chesin, Eric Fertuck, John Keilp, Beth Brodsky, J John Mann, Cemile Ceren Sönmez, Christopher Benjamin-Phillips, Barbara Stanley
Identification of biological indicators of suicide risk is important given advantages of biomarker-based models. Decreased high frequency heart rate variability (HF HRV) may be a biomarker of suicide risk. The aim of this research was to determine whether HF HRV differs between suicide attempters and non-attempters. Using the Trier Social Stress Test (TSST), we compared HF HRV between females with and without a history of suicide attempt, all with a lifetime diagnosis of a mood disorder. To investigate a potential mechanism explaining association between HF HRV and suicide, we examined the association between self-reported anger and HF HRV...
June 30, 2016: Psychiatry Research
D F Levey, E M Niculescu, H Le-Niculescu, H L Dainton, P L Phalen, T B Ladd, H Weber, E Belanger, D L Graham, F N Khan, N P Vanipenta, E C Stage, A Ballew, M Yard, T Gelbart, A Shekhar, N J Schork, S M Kurian, G E Sandusky, D R Salomon, A B Niculescu
Women are under-represented in research on suicidality to date. Although women have a lower rate of suicide completion than men, due in part to the less-violent methods used, they have a higher rate of suicide attempts. Our group has previously identified genomic (blood gene expression biomarkers) and clinical information (apps) predictors for suicidality in men. We now describe pilot studies in women. We used a powerful within-participant discovery approach to identify genes that change in expression between no suicidal ideation (no SI) and high suicidal ideation (high SI) states (n=12 participants out of a cohort of 51 women psychiatric participants followed longitudinally, with diagnoses of bipolar disorder, depression, schizoaffective disorder and schizophrenia)...
June 2016: Molecular Psychiatry
Naomi Sadeh, Erika J Wolf, Mark W Logue, Jasmeet P Hayes, Annjanette Stone, L Michelle Griffin, Steven A Schichman, Mark W Miller
BACKGROUND: DNA methylation of the SKA2 gene has recently been implicated as a biomarker of suicide risk and posttraumatic stress disorder (PTSD). To examine the specificity and reliability of these findings, we examined associations between SKA2 DNA methylation, broad dimensions of psychiatric symptoms, and suicide phenotypes in adults with high levels of trauma exposure. METHODS: A total of 466 White, non-Hispanic veterans and their intimate partners (65% male) underwent clinical assessment and had blood drawn for genotyping and methylation analysis...
April 2016: Depression and Anxiety
Yinming Sun, Faranak Farzan, Benoit H Mulsant, Tarek K Rajji, Paul B Fitzgerald, Mera S Barr, Jonathan Downar, Willy Wong, Daniel M Blumberger, Zafiris J Daskalakis
IMPORTANCE: Magnetic seizure therapy (MST) is a novel therapeutic option for treatment-resistant depression (TRD). Suicidal ideation is often associated with TRD and contributes to the increased mortality and morbidity of the disorder. OBJECTIVE: To identify a biomarker that may serve as an indicator of remission of suicidal ideation following a course of MST by using cortical inhibition measures from interleaved transcranial magnetic stimulation and electroencephalography (TMS-EEG)...
April 2016: JAMA Psychiatry
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