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Pezzoli P, Pingault JB, Malanchini M, Voronin I, McCrory E, Fearon P, Viding E. Reciprocal Effects Between Negative Parenting and Children's Callous-Unemotional Traits From Mid to Late Childhood. Am J Psychiatry 2024; 181:310-321. [PMID: 38476045 DOI: 10.1176/appi.ajp.20230208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/14/2024]
Abstract
OBJECTIVE The role of negative parenting in the development of callous-unemotional (CU) traits remains unclear. Both negative parenting and CU traits are influenced by genetic and environmental factors. The authors used genetically informed longitudinal cross-lagged models to examine the extent to which reciprocal effects between negative parenting and children's CU traits in mid-to-late childhood are genetic versus environmental in origin. METHODS In 9,260 twin pairs from the Twins Early Development Study, the authors estimated cross-lagged effects between negative parenting (discipline and feelings) and children's CU traits in mid (ages 7-9) and late (ages 9-12) childhood. RESULTS CU traits were strongly heritable and stable. Stability was explained largely by genetic factors. The influence of negative parenting on the development of CU traits was small and driven mostly by genetic and shared environmental factors. In mid childhood, the influence of children's CU traits on subsequent negative parenting (i.e., evoked by children's CU traits) was also small and mostly genetic in origin. In late childhood, CU traits showed no effects on negative parental discipline and small effects on negative parental feelings, which reflected mostly shared environmental factors. CONCLUSIONS In mid-to-late childhood, genetic factors strongly influenced the development of CU traits, whereas environmental effects of negative parenting were small. Negative parenting was also relatively unaffected by CU traits. The small reciprocal effects originated mostly from genetic and shared environmental factors. Therefore, repeated intensive interventions addressing multiple risk factors rather than negative parenting alone may be best positioned to support families of children with CU traits across development.
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Affiliation(s)
- Patrizia Pezzoli
- Division of Psychology and Language Sciences, University College London (Pezzoli, Pingault, McCrory, Fearon, Viding); Social, Genetic, and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology, and Neuroscience, King's College London (Pingault, Malanchini); School of Biological and Behavioural Sciences, Queen Mary University of London, London (Malanchini); École de Psychologie, Université Laval, Quebec City, Quebec (Voronin); Department of Psychology, University of Cambridge, Cambridge, U.K. (Fearon)
| | - Jean-Baptiste Pingault
- Division of Psychology and Language Sciences, University College London (Pezzoli, Pingault, McCrory, Fearon, Viding); Social, Genetic, and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology, and Neuroscience, King's College London (Pingault, Malanchini); School of Biological and Behavioural Sciences, Queen Mary University of London, London (Malanchini); École de Psychologie, Université Laval, Quebec City, Quebec (Voronin); Department of Psychology, University of Cambridge, Cambridge, U.K. (Fearon)
| | - Margherita Malanchini
- Division of Psychology and Language Sciences, University College London (Pezzoli, Pingault, McCrory, Fearon, Viding); Social, Genetic, and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology, and Neuroscience, King's College London (Pingault, Malanchini); School of Biological and Behavioural Sciences, Queen Mary University of London, London (Malanchini); École de Psychologie, Université Laval, Quebec City, Quebec (Voronin); Department of Psychology, University of Cambridge, Cambridge, U.K. (Fearon)
| | - Ivan Voronin
- Division of Psychology and Language Sciences, University College London (Pezzoli, Pingault, McCrory, Fearon, Viding); Social, Genetic, and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology, and Neuroscience, King's College London (Pingault, Malanchini); School of Biological and Behavioural Sciences, Queen Mary University of London, London (Malanchini); École de Psychologie, Université Laval, Quebec City, Quebec (Voronin); Department of Psychology, University of Cambridge, Cambridge, U.K. (Fearon)
| | - Eamon McCrory
- Division of Psychology and Language Sciences, University College London (Pezzoli, Pingault, McCrory, Fearon, Viding); Social, Genetic, and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology, and Neuroscience, King's College London (Pingault, Malanchini); School of Biological and Behavioural Sciences, Queen Mary University of London, London (Malanchini); École de Psychologie, Université Laval, Quebec City, Quebec (Voronin); Department of Psychology, University of Cambridge, Cambridge, U.K. (Fearon)
| | - Pasco Fearon
- Division of Psychology and Language Sciences, University College London (Pezzoli, Pingault, McCrory, Fearon, Viding); Social, Genetic, and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology, and Neuroscience, King's College London (Pingault, Malanchini); School of Biological and Behavioural Sciences, Queen Mary University of London, London (Malanchini); École de Psychologie, Université Laval, Quebec City, Quebec (Voronin); Department of Psychology, University of Cambridge, Cambridge, U.K. (Fearon)
| | - Essi Viding
- Division of Psychology and Language Sciences, University College London (Pezzoli, Pingault, McCrory, Fearon, Viding); Social, Genetic, and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology, and Neuroscience, King's College London (Pingault, Malanchini); School of Biological and Behavioural Sciences, Queen Mary University of London, London (Malanchini); École de Psychologie, Université Laval, Quebec City, Quebec (Voronin); Department of Psychology, University of Cambridge, Cambridge, U.K. (Fearon)
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Pezzoli P, Parsons S, Kievit RA, Astle DE, Huys QJM, Steinbeis N, Viding E. Challenges and Solutions to the Measurement of Neurocognitive Mechanisms in Developmental Settings. Biol Psychiatry Cogn Neurosci Neuroimaging 2023; 8:815-821. [PMID: 37003410 DOI: 10.1016/j.bpsc.2023.03.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 03/15/2023] [Accepted: 03/20/2023] [Indexed: 03/31/2023]
Abstract
Identifying early neurocognitive mechanisms that confer risk for mental health problems is one important avenue as we seek to develop successful early interventions. Currently, however, we have limited understanding of the neurocognitive mechanisms involved in shaping mental health trajectories from childhood through young adulthood, and this constrains our ability to develop effective clinical interventions. In particular, there is an urgent need to develop more sensitive, reliable, and scalable measures of individual differences for use in developmental settings. In this review, we outline methodological shortcomings that explain why widely used task-based measures of neurocognition currently tell us little about mental health risk. We discuss specific challenges that arise when studying neurocognitive mechanisms in developmental settings, and we share suggestions for overcoming them. We also propose a novel experimental approach-which we refer to as "cognitive microscopy"-that involves adaptive design optimization, temporally sensitive task administration, and multilevel modeling. This approach addresses some of the methodological shortcomings outlined above and provides measures of stability, variability, and developmental change in neurocognitive mechanisms within a multivariate framework.
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Affiliation(s)
- Patrizia Pezzoli
- Division of Psychology and Language Sciences, University College London, London, United Kingdom.
| | - Sam Parsons
- Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Rogier A Kievit
- Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Duncan E Astle
- Medical Research Council Cognition and Brain Sciences Unit, University of Cambridge, Cambridge, United Kingdom; Department of Psychiatry, University of Cambridge, Cambridge, United Kingdom
| | - Quentin J M Huys
- Applied Computational Psychiatry Laboratory, Mental Health Neuroscience Department, Division of Psychiatry and Max Planck Centre for Computational Psychiatry and Ageing Research, Queen Square Institute of Neurology, University College London, London, United Kingdom
| | - Nikolaus Steinbeis
- Division of Psychology and Language Sciences, University College London, London, United Kingdom
| | - Essi Viding
- Division of Psychology and Language Sciences, University College London, London, United Kingdom.
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Dotterer HL, Vazquez AY, Hyde LW, Neumann CS, Santtila P, Pezzoli P, Johansson A, Burt SA. Elucidating the role of negative parenting in the genetic v. environmental influences on adult psychopathic traits. Psychol Med 2023; 53:897-907. [PMID: 37132644 PMCID: PMC9976022 DOI: 10.1017/s0033291721002269] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 03/23/2021] [Accepted: 05/21/2021] [Indexed: 01/01/2023]
Abstract
BACKGROUND Psychopathic traits involve interpersonal manipulation, callous affect, erratic lifestyle, and antisocial behavior. Though adult psychopathic traits emerge from both genetic and environmental risk, no studies have examined etiologic associations between adult psychopathic traits and experiences of parenting in childhood, or the extent to which parenting practices may impact the heritability of adult psychopathic traits using a genetically-informed design. METHODS In total, 1842 adult twins from the community reported their current psychopathic traits and experiences of negative parenting during childhood. We fit bivariate genetic models to the data, decomposing the variance within, and the covariance between, psychopathic traits and perceived negative parenting into their genetic and environmental components. We then fit a genotype × environment interaction model to evaluate whether negative parenting moderated the etiology of psychopathic traits. RESULTS Psychopathic traits were moderately heritable with substantial non-shared environmental influences. There were significant associations between perceived negative parenting and three of four psychopathy facets (interpersonal manipulation, erratic lifestyle, antisocial tendencies, but not callous affect). These associations were attributable to a common non-shared environmental pathway and not to overlapping genetic effects. Additionally, we found that primarily shared environmental influences were stronger on psychopathic traits for individuals with a history of greater negative parenting. CONCLUSIONS Utilizing a genetically-informed design, we found that both genetic and non-shared environmental factors contribute to the emergence of psychopathic traits. Moreover, perceptions of negative parenting emerged as a clear environmental influence on the development of interpersonal, lifestyle, and antisocial features of psychopathy.
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Affiliation(s)
| | | | - Luke W. Hyde
- Department of Psychology, University of Michigan, Ann Arbor, MI, USA
- Survey Research Center of the Institute for Social Research, University of Michigan, Ann Arbor, MI, USA
| | - Craig S. Neumann
- Department of Psychology, University of North Texas, Denton, TX, USA
| | - Pekka Santtila
- NYU-ECNU Institute for Social Development, NYU Shanghai, Shanghai, China
| | - Patrizia Pezzoli
- Institute of Mental Health Research, University of Ottawa, Ontario, CA, Canada
- Faculty of Medicine, University of Ottawa, Ottawa, Canada
| | - Ada Johansson
- Faculty of Arts, Psychology, and Theology, Åbo Akademi University, Turku, Finland
| | - S. Alexandra Burt
- Department of Psychology, Michigan State University, East Lansing, MI, USA
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Nikolic M, Pezzoli P, Jaworska N, Seto MC. Brain responses in aggression-prone individuals: A systematic review and meta-analysis of functional magnetic resonance imaging (fMRI) studies of anger- and aggression-eliciting tasks. Prog Neuropsychopharmacol Biol Psychiatry 2022; 119:110596. [PMID: 35803398 DOI: 10.1016/j.pnpbp.2022.110596] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 06/25/2022] [Accepted: 06/27/2022] [Indexed: 11/24/2022]
Abstract
Reactive aggression in response to perceived threat or provocation is part of humans' adaptive behavioral repertoire. However, high levels of aggression can lead to the violation of social and legal norms. Understanding brain function in individuals with high levels of aggression as they process anger- and aggression-eliciting stimuli is critical for refining explanatory models of aggression and thereby improving interventions. Three neurobiological models of reactive aggression - the limbic hyperactivity, prefrontal hypoactivity, and dysregulated limbic-prefrontal connectivity models - have been proposed. However, these models are based on neuroimaging studies involving mainly non-aggressive individuals, leaving it unclear which model best describes brain function in those with a history of aggression. We conducted a systematic literature search (PubMed and Psycinfo) and Multilevel Kernel Density meta-analysis (MKDA) of nine functional magnetic resonance imaging (fMRI) studies (eight included in the between-group analysis [i.e., aggression vs. control groups], five in the within-group analysis). Studies examined brain responses to tasks putatively eliciting anger and aggression in individuals with a history of aggression alone and relative to controls. Individuals with a history of aggression exhibited greater activity in the superior temporal gyrus and in regions comprising the cognitive control and default mode networks (right posterior cingulate cortex, precentral gyrus, precuneus, right inferior frontal gyrus) during reactive aggression relative to baseline conditions. Compared to controls, individuals with a history of aggression exhibited increased activity in limbic regions (left hippocampus, left amygdala, left parahippocampal gyrus) and temporal regions (superior, middle, inferior temporal gyrus), and reduced activity in occipital regions (left occipital cortex, left calcarine cortex). These findings lend support to the limbic hyperactivity model in individuals with a history of aggression, and further indicate altered temporal and occipital activity in anger- and aggression-eliciting conditions involving face and speech processing.
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Affiliation(s)
- Maja Nikolic
- McGill University, Montreal, QC, Canada; McMaster University, Hamilton, ON, Canada.
| | - Patrizia Pezzoli
- University College London, London, United Kingdom; University of Ottawa's Institute of Mental Health Research at The Royal, Ottawa, ON, Canada.
| | - Natalia Jaworska
- University of Ottawa's Institute of Mental Health Research at The Royal, Ottawa, ON, Canada; Department of Cellular & Molecular Medicine, University of Ottawa, Ottawa, ON, Canada.
| | - Michael C Seto
- University of Ottawa's Institute of Mental Health Research at The Royal, Ottawa, ON, Canada.
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Pezzoli P, Babchishin K, Pullman L, Seto MC. Viewing Time Measures of Sexual Interest and Sexual Offending Propensity: An Online Survey of Fathers. Arch Sex Behav 2022; 51:4097-4110. [PMID: 36194341 PMCID: PMC9663406 DOI: 10.1007/s10508-022-02324-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 03/03/2022] [Accepted: 03/05/2022] [Indexed: 06/16/2023]
Abstract
Relative viewing times (VTs)-time required to view and evaluate sexually salient images-discriminate individuals with a sexual interest in children, as indirectly indexed by their history of sexual offending against children, from those without such history. In an online sample of 652 fathers, we measured VTs and sexual attraction ratings to child and adult images. We assessed participants' sexual offending history and propensity (self-reported likelihood to have a sexual contact with a child, a non-consensual sexual contact with an adult, and propensity toward father-daughter incest). In contrast with VT studies involving clinical or forensic samples, VTs and attraction ratings failed to discriminate participants with a sexual offending history. VTs successfully distinguished participants with a propensity to sexually offend against children but failed to identify those with a propensity toward incest. Conversely, attraction ratings distinguished participants with a propensity toward incest but failed to identify those with a propensity to sexually offend against children. Correlations between VTs and attraction ratings were small. Results illustrate, for the first time, the distribution of VT measures in community fathers, support the feasibility of online administration of VT tasks to detect propensity to sexually offend against children, and indicate that sexual interest in children and incest propensity are distinct.
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Affiliation(s)
- Patrizia Pezzoli
- Division of Psychology and Language Sciences, Faculty of Brain Sciences, University College London, 26 Bedford Way, London, WC1H 0AP, UK.
- University of Ottawa's Institute of Mental Health Research at The Royal, Ottawa, ON, Canada.
| | - Kelly Babchishin
- Department of Psychology, Carleton University, Ottawa, ON, Canada
| | - Lesleigh Pullman
- University of Ottawa's Institute of Mental Health Research at The Royal, Ottawa, ON, Canada
| | - Michael C Seto
- University of Ottawa's Institute of Mental Health Research at The Royal, Ottawa, ON, Canada
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Affiliation(s)
- Patrizia Pezzoli
- Institute of Mental Health Research, Faculty of Medicine, University of Ottawa, Ottawa, ON K1Z7K4, Canada.
| | - Kimberly J Saudino
- Department of Psychological and Brain Sciences, Boston University, Boston, MA 02215, USA
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Thérond A, Pezzoli P, Abbas M, Howard A, Bowie CR, Guimond S. The Efficacy of Cognitive Remediation in Depression: A Systematic Literature Review and Meta-Analysis. J Affect Disord 2021; 284:238-246. [PMID: 33631438 DOI: 10.1016/j.jad.2021.02.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 01/22/2021] [Accepted: 02/01/2021] [Indexed: 12/31/2022]
Abstract
BACKGROUND Individuals with major depressive disorder often experience cognitive deficits. Cognitive remediation (CR) is an intervention aimed at improving cognition in psychiatric disorders. However, its efficacy on global and specific domains of cognition in adults with depression requires systematic investigation. Further, given individual differences in treatment outcome, moderators of CR effects in depression need to be identified. METHODS We performed a systematic review and meta-analysis of published controlled trials of CR in adults with depression. We analyzed results from eight studies to estimate the efficacy of CR on global cognition and on six cognitive domains. We also examined three potential moderators, namely session format (individual vs. group), treatment duration, and participants' age. RESULTS CR was found to improve global cognition (g = 0.44), verbal memory (g = 0.60), attention/processing speed (g = 0.41), working memory (g = 0.35), and executive functioning (g = 0.30). No significant improvements emerged for visuospatial memory and verbal fluency. Furthermore, no significant moderating effect of participant's age, session duration or session format were observed. LIMITATIONS Conclusions are limited by the small number of studies, the heterogeneity in cognitive measures, and the lack of indicators of everyday functioning. CONCLUSION Our meta-analysis supports the use of CR in improving global cognition in adults with major depressive disorder with a moderate effect size and this efficacy varies between cognitive domains.
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Affiliation(s)
- Alexandra Thérond
- The Royal's Institute of Mental Health Research, 1145 Carling Ave, Ottawa, Ontario, Canada; Department of Psychology, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario, Canada
| | - Patrizia Pezzoli
- The Royal's Institute of Mental Health Research, 1145 Carling Ave, Ottawa, Ontario, Canada
| | - Maria Abbas
- The Royal's Institute of Mental Health Research, 1145 Carling Ave, Ottawa, Ontario, Canada; School of Counselling, Psychotherapy and Spirituality, Saint-Paul University, 223 Main Street, Ottawa, Ontario, Canada
| | - Andrea Howard
- Department of Psychology, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario, Canada
| | - Christopher R Bowie
- Department of Psychology, Queen's University, 62 Arch Street, Kingston, Ontario, Canada
| | - Synthia Guimond
- The Royal's Institute of Mental Health Research, 1145 Carling Ave, Ottawa, Ontario, Canada; Department of Psychology, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario, Canada; Department of Psychiatry, University of Ottawa, 75 Laurier Ave E, Ottawa, Ontario, Canada; Département de psychoéducation et psychologie, Université du Québec en Outaouais, Gatineau, Québec, Canada.
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Pezzoli P, Ziogas A, Seto MC, Jaworska N, Mokros A, Fedoroff P, Santtila P. The Effects of Acute Transcranial Direct Current Stimulation on Attentional Bias in Pedophilic Disorder: A Preregistered Pilot Study. Neuromodulation 2020; 24:879-889. [PMID: 33006171 DOI: 10.1111/ner.13285] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 08/29/2020] [Accepted: 09/02/2020] [Indexed: 02/06/2023]
Abstract
OBJECTIVES Individuals with pedophilic disorder (PD) experience personal and interpersonal difficulties and are at risk of sexually offending against children. As such, innovative and empirically validated treatments are needed. Recent studies have indicated that men who have sexually offended against children (SOC) with PD display an automatic attention bias for child-related stimuli as well as reduced activity in the dorsolateral prefrontal cortex (dlPFC), a brain area involved in cognitive control, including control over sexual arousal. In this preregistered pilot study, we are the first to investigate whether acutely increasing prefrontal activity could reduce the putative pedophilic attention bias. MATERIALS AND METHODS We delivered a single 20-min session of active anodal versus sham transcranial direct current stimulation (tDCS) over the left dlPFC to 16 SOC with PD and 16 matched healthy controls, while they performed a task requiring controlled attention to computer-generated images of clothed and nude children and adults. We collected responses unobtrusively by recording eye movements. RESULTS Our results did not support the presence of the expected automatic attention bias across outcome measures. Nonetheless, we found a response facilitation with child targets in patients and, unexpectedly, in controls, likely due to unwanted salience effects. Active versus sham tDCS reduced this bias across groups, as indicated by a significant group*condition interaction (p = 0.04). However, no attentional bias and no tDCS effects on attentional responses to child and adult images emerged following tDCS. CONCLUSIONS These results suggest enhanced cognitive control in response to salient stimuli during active tDCS. Thus, to assist future studies on neuromodulation in PD, we provide suggestions for design improvement.
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Affiliation(s)
- Patrizia Pezzoli
- Institute of Mental Health Research, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | | | | | - Natalia Jaworska
- Institute of Mental Health Research, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada.,Cellular & Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
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Pezzoli P, Antfolk J, Kronlund E, Santtila P. Child Maltreatment and Adult Sexual Assault Victimization: Genetic and Environmental Associations. J Sex Res 2020; 57:624-638. [PMID: 31276429 DOI: 10.1080/00224499.2019.1634670] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Despite the pervasiveness of adult sexual assault (ASA), evidence-based knowledge on the risk factors for sexual victimization is insufficient. Here, we investigated the etiology of ASA in a population-based Finnish twin sample. Specifically, we estimated the extent of the genetic and environmental influences on the risk of ASA, and we examined its phenotypic and genetic associations with five types of child maltreatment (CM). We found large unique environmental, but also small genetic influences on the risk of ASA, motivating further research on situational and behavioral conditions potentially exploited by sexually motivated perpetrators. The prevalence of ASA was highest among victims of severe child sexual abuse. However, when accounting for the co-occurrence of multiple types of CM, emotional abuse was the strongest predictor of ASA. We further examined, and could not entirely rule out, the possibility of common genetic and environmental pathways underlying CM and ASA. Lastly, we focused on sex differences. Emotional and physical abuse were the strongest predictors of ASA in women and men, respectively, and genetic influences on the risk of ASA were larger in women than men. However, such higher heritability did not reflect sex-limited genetic effects, but, rather, women's systematic exposure to environmental risk of ASA.
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Affiliation(s)
- Patrizia Pezzoli
- Department of Psychology, Åbo Akademi University
- Faculty of Arts and Sciences, New York University
| | - Jan Antfolk
- Department of Psychology, Åbo Akademi University
- Faculty of Arts and Sciences, New York University
| | - Emilia Kronlund
- Department of Psychology, Åbo Akademi University
- Faculty of Arts and Sciences, New York University
| | - Pekka Santtila
- Department of Psychology, Åbo Akademi University
- Faculty of Arts and Sciences, New York University
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Abstract
Although biological factors may influence the risk of experiencing negative life events, the role of genes in the vulnerability to child victimization remains poorly understood. In a large population-based Finnish sample (N = 13,024), we retrospectively measured multiple experiences of child victimization and, in a subsample of twins (n = 9,562), we estimated the extent to which genetic and environmental factors influenced these experiences. In particular, we investigated whether genetic and environmental influences varied depending on the type of child victimization, the genetic relatedness with the perpetrator, and the sex of the victim. Our quantitative genetic analyses supported the presence of both genetic and environmental influences on the occurrence and co-occurrence of child abuse and neglect. We also identified one common etiological pathway underlying multiple child victimizations, and after accounting for this common etiology, we singled out risk factors specific to sexual abuse. Environmental factors shared and nonshared between twins raised together influenced the risk of victimization by genetically related and unrelated perpetrators, respectively. Furthermore, we estimated sex differences in the etiology of emotional and sexual victimization, including larger unshared environmental influences for men and sex-limited genetic effects for women. These findings can inform child protection as they contribute to explaining why certain individuals are at increased risk of experiencing one or more types of child maltreatment.
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Affiliation(s)
- Patrizia Pezzoli
- Department of Psychology, Åbo Akademi University, Turku, Finland
| | - Jan Antfolk
- Department of Psychology, Åbo Akademi University, Turku, Finland
| | - Alexander S Hatoum
- Department of Psychiatry, Washington University in St. Louis, St. Louis, MO, United States
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Pezzoli P, Antfolk J, Santtila P. Phenotypic factor analysis of psychopathology reveals a new body-related transdiagnostic factor. PLoS One 2017; 12:e0177674. [PMID: 28542328 PMCID: PMC5436748 DOI: 10.1371/journal.pone.0177674] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 05/01/2017] [Indexed: 12/11/2022] Open
Abstract
Comorbidity challenges the notion of mental disorders as discrete categories. An increasing body of literature shows that symptoms cut across traditional diagnostic boundaries and interact in shaping the latent structure of psychopathology. Using exploratory and confirmatory factor analysis, we reveal the latent sources of covariation among nine measures of psychopathological functioning in a population-based sample of 13024 Finnish twins and their siblings. By implementing unidimensional, multidimensional, second-order, and bifactor models, we illustrate the relationships between observed variables, specific, and general latent factors. We also provide the first investigation to date of measurement invariance of the bifactor model of psychopathology across gender and age groups. Our main result is the identification of a distinct "Body" factor, alongside the previously identified Internalizing and Externalizing factors. We also report relevant cross-disorder associations, especially between body-related psychopathology and trait anger, as well as substantial sex and age differences in observed and latent means. The findings expand the meta-structure of psychopathology, with implications for empirical and clinical practice, and demonstrate shared mechanisms underlying attitudes towards nutrition, self-image, sexuality and anger, with gender- and age-specific features.
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Affiliation(s)
- Patrizia Pezzoli
- Department of Psychology, Åbo Akademi University, Turku, Finland
- * E-mail:
| | - Jan Antfolk
- Department of Psychology, Åbo Akademi University, Turku, Finland
- Turku Brain and Mind Centre, Turku, Finland
| | - Pekka Santtila
- Department of Psychology, Åbo Akademi University, Turku, Finland
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Xu Q, Pezzoli P, Monforte J, Vansant G. Identification of the correlation between drug activity and sensitivity of HSP90 inhibitors in breast cancer cells using a multivariate gene expression assay. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.22214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Vansant G, Pezzoli P, Goldstein W, Monforte J, Birrer M. Development of a gene signature for earlier detection and diagnosis of ovarian cancer. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.5573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
5573 Background: Ovarian cancer is the 5th leading cause of death from cancer among women and is the most fatal cancer among the gynecological malignancies. One of the major reasons for poor prognosis among ovarian cancer patients is the disease is often detected at stages III and IV, where survival rates are very low. For patients at these stages, less than 25% will survive 5 years and ultimately 75% of women diagnosed at these late stages will die. The current biomarker predominantly used for detection of ovarian cancer and monitoring of patients for relapse during therapy is the mucin 16 gene product CA125. The utility of this biomarker is limited because its expression is not always isolated to tumor tissue and in fact its expression is not associated with 40% of stage I tumors. Methods: Genes were selected that have been shown to have significant expression differences in primary ovarian tumors versus normal surface ovarian epithelium and were used to develop a multiplex RT-PCR assay for monitoring the expression of these genes. We extracted RNA from samples representative of patients with cancers of various stages (1A through 4B) and diagnoses as well as disease free subjects and monitored the expression of the potential genetic biomarkers in these samples with the developed multiplex assay. Results: Cluster analysis of the gene expression data successfully grouped the different stages together with very high specificity including the samples from the stage I patients. One stage I sample clustered with the stage III and IVs. This was from a patient with a poorly differentiated serous adenocarcinoma, a characteristically aggressive tumor which may be physiologically more similar to the later stage tumors. Conclusions: In these experiments we sought to identify and evaluate potential biomarkers that could be used in parallel for early detection and for monitoring patients during treatment. Initial results from this study revealed genes that have the potential to be part of a gene signature assay panel for early detection and patient treatment monitoring for ovarian cancer. No significant financial relationships to disclose.
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Affiliation(s)
- G. Vansant
- Althea Technologies, San Diego, CA; NIH, Bethesda, MD
| | - P. Pezzoli
- Althea Technologies, San Diego, CA; NIH, Bethesda, MD
| | - W. Goldstein
- Althea Technologies, San Diego, CA; NIH, Bethesda, MD
| | - J. Monforte
- Althea Technologies, San Diego, CA; NIH, Bethesda, MD
| | - M. Birrer
- Althea Technologies, San Diego, CA; NIH, Bethesda, MD
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Yei S, Bartholomew RM, Pezzoli P, Gutierrez A, Gouveia E, Bassett D, Soo Hoo W, Carlo DJ. Novel membrane-bound GM-CSF vaccines for the treatment of cancer: generation and evaluation of mbGM-CSF mouse B16F10 melanoma cell vaccine. Gene Ther 2002; 9:1302-11. [PMID: 12224013 DOI: 10.1038/sj.gt.3301803] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2002] [Accepted: 04/29/2002] [Indexed: 11/09/2022]
Abstract
Cancer vaccines composed of tumor cells engineered to secrete granulocyte-macrophage colony-stimulating factor (GM-CSF) are currently being clinically evaluated. To enhance the immunogenicity of GM-CSF-secreting tumor cell vaccines, a novel approach expressing GM-CSF as a membrane-bound form (mbGM-CSF) on the tumor cell surface was investigated. The intent was to enhance antigen presentation by increasing interactions between the tumor cell lines in the vaccine and GM-CSF receptor positive antigen presenting cells (APC), notably the patient's Langerhans cells residing within the intradermal injection site. B16.F10 cells engineered to express either membrane-bound or secreted GM-CSF were compared in the B16.F10 mouse melanoma model. We observed that mbGM-CSF on the tumor cell surface retarded growth and induced protective immunity to subsequent wild-type tumor challenge more effectively than tumor cells secreting GM-CSF. Vaccination with irradiated mbGM-CSF B16.F10 also provided strong protection from wild-type tumor challenge, improved therapeutic effects against established tumors, and retarded lung metastases. These results demonstrate that mbGM-CSF B16.F10 cells can induce strong systemic immunity that protects against and therapeutically treats B16.F10 melanoma more effectively than analogous vaccines containing only secreted GM-CSF. These data warrant further development and clinical testing of mbGM-CSF tumor cell vaccines.
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Affiliation(s)
- S Yei
- Division of Cancer, The Immune Response Corporation, 5935 Darwin Court, Carlsbad, CA 92008, USA
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15
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Mullen PM, Lollo CP, Phan QC, Amini A, Banaszczyk MG, Fabrycki JM, Wu D, Carlo AT, Pezzoli P, Coffin CC, Carlo DJ. Strength of conjugate binding to plasmid DNA affects degradation rate and expression level in vivo. Biochim Biophys Acta 2000; 1523:103-10. [PMID: 11099863 DOI: 10.1016/s0304-4165(00)00104-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In vitro assays have demonstrated the capability of poly-L-lysine to protect plasmid DNA from serum nucleases and cellular lysates. Our purpose was to evaluate the stability and potency of poly-L-lysine-DNA polyplexes after intravenous injection into mice. Polyplexes consisted of 32P-radiolabeled plasmid DNA complexed with poly-L-lysine at specified charge ratios. Variations in conjugate hydrophobicity and levels of modification with polyethylene glycol were investigated. Our results show that, in contrast to in vitro studies, the systemically administered polyplexes exhibited marked DNA degradation in the vascular compartment within 5 min. Substitution of poly-L-lysine epsilon-amino sites with polyethylene glycol or hydrocarbon chains resulted in faster degradation even when complexed at higher charge (+/-) ratios. Use of excess cationic charge in the polyplexes (+/- 2.5) diminished degradation rates only slightly. An analysis was made of the strength of the poly-L-lysine:DNA interaction by competition with poly-aspartic acid. Polyplexes with the strongest binding between conjugate and DNA in the competition assay were also the most stable in blood. However, tighter binding was not enough to fully protect the polyplex in vivo and polyplex DNA was substantially degraded within 10 min. Increased polyplex stability did not correlate with improved in vivo transfection efficiency.
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Affiliation(s)
- P M Mullen
- Gene Therapy Department, The Immune Response Corporation, Carlsbad, CA 92008, USA.
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16
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Boyer V, Pezzoli P, Audoly G, Desgranges C, Jensen F, Ferre F. Identification of differentially expressed mRNA species during HIV infection by RNA arbitrarily primed PCR. Clin Diagn Virol 1996; 7:43-53. [PMID: 9077429 DOI: 10.1016/s0928-0197(96)00253-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND A number of strategies, such as subtractive cDNA libraries and high through-put sequencing, have been devised to assess differential gene expression. Most of these approaches, however, are cumbersome and/or require tremendous technological power. In this paper, we describe a method, RNA fingerprinting using arbitrarily primed polymerase chain reaction (RAP-PCR), that is rapid, less cumbersome and can differentiate low levels of mRNA expression. OBJECTIVES To identify genes that are differentially expressed following human immunodeficiency virus type 1 (HIV-1) infection in different cell types by RAP-PCR. STUDY DESIGN RNA was extracted from both HIV-1-infected and uninfected HUT78 cells and peripheral blood mononuclear cells (PBMCs), reverse transcribed, and RAP-PCR amplified using numerous primer sets. RESULTS Three genes, gamma-actin, the HIV-1 nef and an unknown sequence, were identified as being differentially expressed in HUT78 cells. The level of gamma-actin mRNA expression is increased after HIV infection and, as expected, the nef gene was solely expressed in HIV-infected cells. In contrast, the unknown mRNA is down-regulated by HIV. Northern blot analysis and/or specific PCR confirmed the differential expression of these three genes. RNA fingerprinting using phytohemagglutinin (PHA)-activated PBMCs infected by HIV in vitro, revealed that gamma-actin is still up-regulated by HIV, whereas the unknown product no longer shows down-regulation. CONCLUSIONS These results illustrate the usefulness of the RAP-PCR method for isolating and identifying differentially expressed genes during HIV-1 infection of primary lymphocytes.
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Affiliation(s)
- V Boyer
- Immune Response Corporation, Carlsbad, CA, USA.
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17
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Fiorini G, Scotti LA, Parmigiani ML, Ferrari M, Pezzoli P, Bignotti G. [An echocardiographic study of left ventricular diastolic function in patients with diabetes mellitus type 2]. G Ital Cardiol 1995; 25:17-25. [PMID: 7642009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
AIM OF THE STUDY To evaluate left ventricular diastolic function by Doppler echocardiography in patients with type 2 (non-insulin-dependent) diabetes mellitus, without coronary artery disease. BACKGROUND Previous studies suggest that the velocity curve obtained by Doppler echocardiography of the mitral inflow may reflect the filling pattern of the left ventricle. METHODS AND RESULTS To evaluate the presence of diastolic impairment of the left ventricle in diabetic patients without evidence of coronary artery disease, 30 patients with non-insulin-dependent diabetes mellitus and 20 normal control subjects underwent M-mode, two-dimensional (2-D) and Doppler echocardiography. In the group of diabetic patients (Diabetics), the peak E wave velocity was 0.70 +/- 0.11 m/sec, while in the control group (Controls) it was 1.1 +/- 0.23 m/sec (mean values, +SD, p < 0.001). The peak A wave velocity was 0.89 +/- 0.17 in Diabetics, versus 0.60 +/- 0.34 in Controls. Consequently, E/A ratio was 0.81 +/- 0.18 in Diabetics, versus 1.73 +/- 0.29 in Controls (p < 0.001). Isovolumic relaxation time was 0.08 +/- 0.021 sec in Diabetics, while in Controls it was 0.04 +/- 0.02 sec (p < 0.001). Left atrium diameter was 41 +/- 11 mm in Diabetics, and 37 +/- 4 mm in Controls (p = NS). Left ventricular volumes, ejection fraction, interventricular septal and posterior wall thickness were similar in both groups. No correlation was found between diabetes duration and diastolic function indexes. In Diabetics no correlation was found between age and E/A ratio (correlation coefficient +/- 0.11) while in Controls E/A ratio was lower in the older subjects (r = +/- 0.75). This ratio was 1.89 +/- 0.20 in Controls aged < 65 years, and 1.6 +/- 0.33 in Controls aged > or = 65 years. (p = 0.06). These data suggest that 1) E/A ratio and isovolumic relaxation time are significantly altered in non-insulin-dependent diabetic patients without coronary artery disease; 2) Doppler echocardiography is a useful technique to detect left ventricular diastolic impairment; 3) diastolic impairment seems not to correlate with disease duration; 4) systolic function is normal in our group of type 2 diabetic patients.
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Affiliation(s)
- G Fiorini
- Divisione di Medicina, Ospedale Uboldo, Cernusco sul Naviglio, MI
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18
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Boyer V, Smith LR, Ferre F, Pezzoli P, Trauger RJ, Jensen FC, Carlo DJ. T cell receptor V beta repertoire in HIV-infection individuals: lack of evidence for selective V beta deletion. Clin Exp Immunol 1993; 92:437-41. [PMID: 8099857 PMCID: PMC1554770 DOI: 10.1111/j.1365-2249.1993.tb03417.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
The gradual decline of CD4+ T lymphocytes in HIV-infected individuals culminates in the lethal immunosuppression of AIDS. The mechanism of CD4+ T cell loss is currently unknown, but has recently been suggested to occur as a result of an HIV-encoded superantigen which facilitates a selective deletion of T cells expressing specific V beta genes. To verify and extend such observations, peripheral blood leucocytes (PBL) from 15 HIV+ individuals, 10 of which had very low CD4 T cell counts (< 200/mm3), were analysed for T cell receptor (TCR) V beta gene expression. In contrast to a recent study, the results presented here fail to provide evidence that selective loss of V beta-bearing T cells occurs in HIV+ individuals. Furthermore, when PBL from HIV+ individuals were stimulated with Staphylococcal enterotoxin B (SEB), T cells expressing V beta subfamilies known to engage this superantigen were expanded, indicating that such cells were not deleted and were responsive to stimulation by a bacterial superantigen. Collectively, these data suggest that CD4 loss in HIV patients does not occur in a V beta-selective, superantigen-mediated fashion.
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Affiliation(s)
- V Boyer
- Immune Response Corporation, Carlsbad, CA 92008
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19
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Milani R, Scalambrino S, Carrera S, Pezzoli P, Ruffmann R. Comparison of flavoxate hydrochloride in daily dosages of 600 versus 1200 mg for the treatment of urgency and urge incontinence. J Int Med Res 1988; 16:244-8. [PMID: 3044876 DOI: 10.1177/030006058801600313] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Flavoxate hydrochloride at a daily dosage of 600 mg was compared to a daily dosage of 1200 mg for the treatment of unstable bladder. Twenty-seven patients were treated for 4 weeks in a double-blind, randomized, parallel-group trial. Clinically, both schedules were equally successful. In urodynamic terms, however, particularly with respect to uninhibited detrusor contractions, 1200 mg/day was significantly superior to 600 mg/day. Tolerability was excellent for both regimens. The side-effect free treatment of urgency and urge incontinence is of paramount importance for a patient's quality of life.
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Affiliation(s)
- R Milani
- Department of Obstetrics and Gynaecology, University of Milan, San Gerardo Hospital, Monza, Italy
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20
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Milani R, Scalambrino S, Carrera S, Pezzoli P, Ruffmann R. Flavoxate hydrochloride for urinary urgency after pelvic radiotherapy: comparison of 600 mg versus 1200 mg daily dosages. J Int Med Res 1988; 16:71-4. [PMID: 3350206 DOI: 10.1177/030006058801600109] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
This preliminary communication reports on a non-randomized pilot type trial of 34 females with urgency after pelvic radiotherapy who were treated with flavoxate hydrochloride for 4 weeks. A dosage of 600 mg/day was given to 21 patients and 1200 mg/day to 13 patients. Clinically, both regimens achieved comparable results. Urodynamically (first desire volume, bladder capacity and pressure at capacity) treatment with 1200 mg/day was significantly superior to 600 mg/day. Both schedules were equally well tolerated by patients and no treatment interruption occurred. A randomized double-blind trial comparing 600 and 1200 mg/day flavoxate hydrochloride is currently underway the results of which will be reported in due course.
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Affiliation(s)
- R Milani
- Department of Obstetrics and Gynaecology, University of Milan, Italy
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21
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Defabiani F, Cattaneo L, Pezzoli P. [Considerations on the patella partita]. Minerva Ortop 1965; 16:625-7. [PMID: 5867410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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