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Scheinberg T, Fitzpatrick M, Lin HM, Azad A, Bonnitcha P, Davies A, Heller G, Huynh K, Mak B, Mahon K, Meikle P, Sullivan D, Horvath L. 1409P Development of a clinically accessible, circulating prognostic lipid biomarker panel in men with mCRPC to guide potential metabolic intervention. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1895] [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: 11/16/2022] Open
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Mahon K, Garland SN, Tulk J, Rash J, Seal M, Laing K. 1037 One Year Trajectory of Insomnia and Comorbid Symptoms in Women With Early Stage Breast Cancer. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.1033] [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: 11/12/2022] Open
Abstract
Abstract
Introduction
Insomnia symptoms are a common problem and are often comorbid with hot flashes, fatigue, anxiety, and depression following a breast cancer diagnosis. The present study examined changes in insomnia severity and comorbid symptoms in the year following diagnosis.
Methods
This study is part of a larger prospective observational cohort study of 100 women with early stage breast cancer. Insomnia symptoms were measured using the Insomnia Severity Index, fatigue was measured using the Multidimensional Fatigue Symptom Inventory-Short Form, anxiety and depression were assessed using the Hospital Anxiety and Depression Scale, and hot flashes were assessed using the Hot Flash Related Daily Interference Scale. Assessments were performed shortly after diagnosis, 4, 8, and 12 months. A series of repeated measures within subjects ANOVAs were performed to assess changes in symptoms over time.
Results
Among 100 women with breast cancer, 45% reported at least mild insomnia symptoms. There were significant quadratic effects of time on insomnia severity, F(3, 297)= 12.776, p ≤ .001, depression (F[3, 297]= 4.409, p = .005), and fatigue (F[3, 297]= 7.995, p ≤ .001). These symptoms initially worsen and then improve throughout the year, but they do not rebound to pre-treatment levels. Interference from hot flashes worsens and endures for longer than other symptoms but does begin to show improvement one year post-diagnosis (F[3, 297]= 12.110, p ≤ .001). The were no time effects for anxiety (F[3, 297] = 1.4, p = .243).
Conclusion
In general, women treated for breast cancer can expect insomnia and comorbid symptoms to worsen then improve, but not recover, during the first year after a breast cancer diagnosis. Early efforts to educate women and manage symptoms could prevent insomnia and other issues from becoming persistent problems.
Support
Dr. Garland is supported by a Scotiabank New Investigator Award and seed funding from the Beatrice Hunter Cancer Research Institute (BHCRI).
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Affiliation(s)
- K Mahon
- Department of Psychology, Memorial University, St. John’s, NL, CANADA
| | - S N Garland
- Department of Psychology, Memorial University, St. John’s, NL, CANADA
- Discipline of Oncology, Memorial University, St. John’s, NL, CANADA
- Beatrice Hunter Cancer Research Institute, Halifax, NS, CANADA
| | - J Tulk
- Department of Psychology, Memorial University, St. John’s, NL, CANADA
| | - J Rash
- Department of Psychology, Memorial University, St. John’s, NL, CANADA
| | - M Seal
- Discipline of Oncology, Memorial University, St. John’s, NL, CANADA
| | - K Laing
- Discipline of Oncology, Memorial University, St. John’s, NL, CANADA
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Squires L, Mahon K, Rash J, Powell E, Seal M, Garland SN. 1045 Impact Of Pre-treatment Sleep And Menopausal Status On Sleep Quality In The 12 Months Following A Breast Cancer Diagnosis. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.1041] [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: 11/13/2022] Open
Abstract
Abstract
Introduction
Sleep disturbances are a prevalent and enduring problem in women who have completed treatment for breast cancer. Less is known about whether sleep during and after cancer treatment is influenced by pre-treatment sleep quality and menopausal status. The present study aims to examine the trajectory of sleep quality in the 12 months following a cancer diagnosis and assess whether trajectory is influenced by pre-treatment sleep quality and menopausal status.
Methods
Newly-diagnosed women (N=88) with non-metastatic BCa were recruited before beginning treatment. They completed the Pittsburgh Sleep Quality Index (PSQI) before treatment and 4, 8, and 12 months later. Women with a score ≥5 on the Pittsburgh Sleep Quality Index at treatment onset were classified as poor sleepers. Menopausal status (pre- or post-menopausal) was chart abstracted. A mixed ANOVA assessed the impact of pre-treatment sleep quality and menopausal status on sleep quality trajectory.
Results
The mean age of the sample was 60 years, 70% were classified as poor sleepers, and 72% were post-menopausal. There was a significant linear time by sleep quality interaction, F(1, 83)= 5.79, p =.02. Good sleepers experienced a greater initial worsening of sleep quality than poor sleepers. At 12 months, poor sleepers had returned to baseline levels whereas scores in good sleepers remained higher than baseline. The 3-way time x sleep quality x menopausal status and the 2-way time by menopausal status interactions were not significant.
Conclusion
Baseline sleep quality is a more powerful determinant of sleep trajectory during treatment than menopausal status. Early intervention is necessary to treat existing sleep problems and prevent the development of sleep problems in women with a history of good sleep.
Support
Dr. Garland is supported by a New Investigator Award and seed funding from the Beatrice Hunter Cancer Research Institute (BHCRI).
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Affiliation(s)
- L Squires
- Department of Psychology, Memorial University, St. John’s, NL, CANADA
| | - K Mahon
- Department of Psychology, Memorial University, St. John’s, NL, CANADA
| | - J Rash
- Department of Psychology, Memorial University, St. John’s, NL, CANADA
| | - E Powell
- Discipline of Oncology, Memorial University, St. John’s, NL, CANADA
| | - M Seal
- Discipline of Oncology, Memorial University, St. John’s, NL, CANADA
| | - S N Garland
- Department of Psychology, Memorial University, St. John’s, NL, CANADA
- Discipline of Oncology, Memorial University, St. John’s, NL, CANADA
- Beatrice Hunter Cancer Research Institute, Halifax, NS, CANADA
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Russo M, Van Rheenen TE, Shanahan M, Mahon K, Perez-Rodriguez MM, Cuesta-Diaz A, Larsen E, Malhotra AK, Burdick KE. Neurocognitive subtypes in patients with bipolar disorder and their unaffected siblings. Psychol Med 2017; 47:2892-2905. [PMID: 28587689 PMCID: PMC5856455 DOI: 10.1017/s003329171700143x] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [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] [Indexed: 12/20/2022]
Abstract
BACKGROUND Our previous work revealed substantial heterogeneity in the cognitive profile of bipolar disorder (BD) due to the presence of three underlying cognitive subgroups characterized as: globally impaired, selectively impaired, or cognitively intact. In an effort to determine whether these subgroups are differentially related to genetic risk for the illness, we investigated whether cognitive deficits were more pronounced in unaffected siblings (UAS) of BD probands within identified clusters. METHODS Cluster analysis was used to identify cognitive clusters in BD (N = 60). UAS (N = 49) were classified into groups according to their proband sibling's cluster assignment; comparisons were made across all clusters and healthy controls (HCs; N = 71). RESULTS Three cognitive clusters in BD emerged: a globally impaired (36.7%), a selectively impaired (30%), and a cognitively intact cluster (33.3%). UAS showed a qualitatively similar pattern to their BD siblings; UAS of the globally impaired BD cluster showed verbal memory and general cognitive impairments relative to HCs. In contrast, UAS of the other two clusters did not differ from HCs. CONCLUSIONS This study corroborates findings from prior work regarding the presence of cognitive heterogeneity in BD. UAS of subjects in the globally impaired BD cluster presented with a qualitatively similar cognitive profile to their siblings and performed worse than all other BD clusters and UAS groups. This suggests that inherited risk factors may be contributing to cognitive deficits more notably in one subgroup of patients with BD, pointing toward differential causes of cognitive deficits in discrete subgroups of patients with the disorder.
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Affiliation(s)
- M. Russo
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai School of Medicine, New York, NY, USA
- Department of Psychosis Studies, Institute of Psychiatry, Psychology & Neuroscience, King’s College London, UK
| | - T. E. Van Rheenen
- Melbourne Neuropsychiatry Centre, Department of Psychiatry, University of Melbourne, Melbourne, Australia
- Brain and Psychological Sciences Research Centre, School of Health Sciences, Swinburne University, Melbourne, Australia
- Cognitive Neuropsychiatry Laboratory, Monash Alfred Psychiatry Research Centre, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Australia
| | - M. Shanahan
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai School of Medicine, New York, NY, USA
| | - K. Mahon
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai School of Medicine, New York, NY, USA
| | - M. M. Perez-Rodriguez
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai School of Medicine, New York, NY, USA
| | - A. Cuesta-Diaz
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai School of Medicine, New York, NY, USA
| | - E. Larsen
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai School of Medicine, New York, NY, USA
| | - A. K. Malhotra
- Zucker Hillside Hospital – Northwell Health System, Glen Oaks, NY, USA
| | - K. E Burdick
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai School of Medicine, New York, NY, USA
- Department of Neuroscience, Icahn School of Medicine at Mount Sinai School of Medicine, New York, NY, USA
- James J Peters Veteran Administration (VA) Hospital, Bronx, NY, USA
- Brigham and Women’s Hospital, Boston, MA, USA
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Prosser RS, Mahon K, Sibley PK, Poirier D, Watson-Leung T. Bioaccumulation of perfluorinated carboxylates and sulfonates and polychlorinated biphenyls in laboratory-cultured Hexagenia spp., Lumbriculus variegatus and Pimephales promelas from field-collected sediments. Sci Total Environ 2016; 543:715-726. [PMID: 26615489 DOI: 10.1016/j.scitotenv.2015.11.062] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 11/12/2015] [Accepted: 11/12/2015] [Indexed: 06/05/2023]
Abstract
Polychlorinated biphenyls (PCBs) and perfluorinated carboxylates and sulfonates (PFASs) are persistent pollutants in sediment that can potentially bioaccumulate in aquatic organisms. The current study investigates variation in the accumulation of PCBs and PFASs in laboratory-cultured Hexagenia spp., Lumbriculus variegatus and Pimephales promelas from contaminated field-collected sediment using 28-day tests. BSAF(lipid) (lipid-normalized biota-sediment accumulation factor) values for total concentration of PCBs were greater in Hexagenia spp. relative to L. variegatus and P. promelas. The distribution of congeners contributing to the total concentration of PCBs in tissue varied among the three species. Trichlorobiphenyl congeners composed the greatest proportion of the total concentration of PCBs in L. variegatus while tetra- and pentabiphenyl congeners dominated in Hexagenia spp. and P. promelas. Perfluorooctane sulfonate (PFOS) was present in all three species at concentrations greater than all other PFASs analyzed. Hexagenia spp. also produced the greatest BSAF(lipid) and BSAF(ww) (non-lipid-normalized biota-sediment accumulation factor) values for PFOS relative to the other two species. However, this was not the case for all PFASs. The trend of BSAF values and number of carbon atoms in the perfluoroalkyl chain of perfluorinated carboxylates varied among the three species but was similar for perfluorinated sulfonates. Differences in the dominant pathways of exposure (e.g., water, sediment ingestion) likely explain a large proportion of the variation in accumulation observed across the three species.
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Affiliation(s)
- R S Prosser
- School of Environmental Sciences, University of Guelph, Guelph, Ontario, Canada.
| | - K Mahon
- Aquatic Toxicology Unit, Ontario Ministry of the Environment and Climate Change, Toronto, Ontario, Canada
| | - P K Sibley
- School of Environmental Sciences, University of Guelph, Guelph, Ontario, Canada
| | - D Poirier
- Aquatic Toxicology Unit, Ontario Ministry of the Environment and Climate Change, Toronto, Ontario, Canada
| | - T Watson-Leung
- Aquatic Toxicology Unit, Ontario Ministry of the Environment and Climate Change, Toronto, Ontario, Canada
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Wiser I, Mahon K, Yaniv S, Ziv E, Carmel NN, Heller L. Intraoperative pulmonary function dynamics in adolescents undergoing reduction mammoplasty: A prospective case series. Plast Surg (Oakv) 2015; 23:244-6. [PMID: 26665139 DOI: 10.4172/plastic-surgery.1000938] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Improvement of lung function following reduction mammoplasty has been previously reported among adult populations in the medical literature. OBJECTIVES To evaluate the intraoperative dynamics of pulmonary function in adolescents undergoing reduction mammoplasty. METHODS The present study is a prospective case series of female patients 13 to 18 years of age who underwent inferior pedicle reduction mammoplasty between November 20, 2006 and April 4, 2011. Documented variables included patient baseline characteristics, operation duration, muscle relaxant use and total breast tissue removed. Intraoperative pulmonary function data documented included: tidal volume, respiratory rate, peak inspiratory pressure, positive end-expiratory pressure, oxygen saturation percentage and pulmonary compliance. Differences in pulmonary function data were calculated as ratio between final and initial intraoperative values. RESULTS Twenty-six patients were included in the analysis. Mean (± SD) age was 16.9±1.1 years and mean body mass index was 28.9±6.1 kg/m(2). Mean operation time was 218±52 min, with average total bilateral breast tissue removal of 1810±1065 g. Improvement in lung compliance was observed in 24 patients (92.3%; P<0.0001). Mean intraoperative lung compliance improvement was 23.92% (95% CI 8.3% to 37%; P=0.001). CONCLUSION Intraoperative improvement in lung compliance was observed in adolescent patients undergoing reduction mammoplasty.
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Affiliation(s)
- Itay Wiser
- Department of Plastic Surgery, Assaf Harofeh Medical Center, affiliated to Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Krity Mahon
- Division of Plastic Surgery, Baylor College of Medicine, Houston, Texas, USA
| | - Shirley Yaniv
- Department of Plastic Surgery, Assaf Harofeh Medical Center, affiliated to Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Ella Ziv
- Department of Plastic Surgery, Assaf Harofeh Medical Center, affiliated to Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Narin Nard Carmel
- Department of Plastic Surgery, Assaf Harofeh Medical Center, affiliated to Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel; ; Tel Aviv University, Sackler School of Medicine, Tel Aviv, Israel
| | - Lior Heller
- Department of Plastic Surgery, Assaf Harofeh Medical Center, affiliated to Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel; ; Division of Plastic Surgery, Baylor College of Medicine, Houston, Texas, USA
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Wiser I, Mahon K, Yaniv S, Mha EZ, Carmel NN, Heller L. Intraoperative pulmonary function dynamics in adolescents undergoing reduction mammoplasty: A prospective case series. Plast Surg (Oakv) 2015. [DOI: 10.1177/229255031502300406] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Background Improvement of lung function following reduction mammoplasty has been previously reported among adult populations in the medical literature. Objectives To evaluate the intraoperative dynamics of pulmonary function in adolescents undergoing reduction mammoplasty. Methods The present study is a prospective case series of female patients 13 to 18 years of age who underwent inferior pedicle reduction mammoplasty between November 20, 2006 and April 4, 2011. Documented variables included patient baseline characteristics, operation duration, muscle relaxant use and total breast tissue removed. Intraoperative pulmonary function data documented included: tidal volume, respiratory rate, peak inspiratory pressure, positive end-expiratory pressure, oxygen saturation percentage and pulmonary compliance. Differences in pulmonary function data were calculated as ratio between final and initial intraoperative values. Results Twenty-six patients were included in the analysis. Mean (± SD) age was 16.9±1.1 years and mean body mass index was 28.9±6.1 kg/m2. Mean operation time was 218±52 min, with average total bilateral breast tissue removal of 1810±1065 g. Improvement in lung compliance was observed in 24 patients (92.3%; P<0.0001). Mean intraoperative lung compliance improvement was 23.92% (95% CI 8.3% to 37%; P=0.001). Conclusion Intraoperative improvement in lung compliance was observed in adolescent patients undergoing reduction mammoplasty.
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Affiliation(s)
- Itay Wiser
- Department of Plastic Surgery, Assaf Harofeh Medical Center, affiliated to Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Krity Mahon
- Division of Plastic Surgery, Baylor College of Medicine, Houston, Texas, USA
| | - Shirley Yaniv
- Department of Plastic Surgery, Assaf Harofeh Medical Center, affiliated to Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Ella Ziv Mha
- Department of Plastic Surgery, Assaf Harofeh Medical Center, affiliated to Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Narin Nard Carmel
- Department of Plastic Surgery, Assaf Harofeh Medical Center, affiliated to Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
- Tel Aviv University, Sackler School of Medicine, Tel Aviv, Israel
| | - Lior Heller
- Department of Plastic Surgery, Assaf Harofeh Medical Center, affiliated to Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
- Division of Plastic Surgery, Baylor College of Medicine, Houston, Texas, USA
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Burdick KE, Russo M, Frangou S, Mahon K, Braga RJ, Shanahan M, Malhotra AK. Empirical evidence for discrete neurocognitive subgroups in bipolar disorder: clinical implications. Psychol Med 2014; 44:3083-3096. [PMID: 25065409 PMCID: PMC4797987 DOI: 10.1017/s0033291714000439] [Citation(s) in RCA: 208] [Impact Index Per Article: 20.8] [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] [Indexed: 12/20/2022]
Abstract
BACKGROUND Recent data suggest trait-like neurocognitive impairments in bipolar disorder (BPD), with deficits about 1 s.d. below average, less severe than deficits noted in schizophrenia. The frequency of significant impairment in BPD is approximately 60%, with 40% of patients characterized as cognitively spared. This contrasts with a more homogeneous presentation in schizophrenia. It is not understood why some BPD patients develop deficits while others do not. METHOD A total of 136 patients with BPD completed the MATRICS Consensus Cognitive Battery and data were entered into hierarchical cluster analyses to: (1) determine the optimal number of clusters (subgroups) that fit the sample; and (2) assign subjects to a specific cluster based on individual profiles. We then compared subgroups on several clinical factors and real-world community functioning. RESULTS Three distinct neurocognitive subgroups were found: (1) an intact group with performance comparable with healthy controls on all domains but with superior social cognition; (2) a selective impairment group with moderate deficits on processing speed, attention, verbal learning and social cognition and normal functioning in other domains; and (3) a global impairment group with severe deficits across all cognitive domains comparable with deficits in schizophrenia. CONCLUSIONS These results suggest the presence of multiple cognitive subgroups in BPD with unique profiles and begin to address the relationships between these subgroups, several clinical factors and functional outcome. Next steps will include using these data to help guide future efforts to target these disabling symptoms with treatment.
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Affiliation(s)
- K. E. Burdick
- Departments of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - M. Russo
- Departments of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - S. Frangou
- Departments of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - K. Mahon
- Departments of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - R. J. Braga
- Zucker Hillside Hospital – North Shore Long Island Jewish Health System, Glen Oaks, NY, USA
| | - M. Shanahan
- Departments of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - A. K. Malhotra
- Zucker Hillside Hospital – North Shore Long Island Jewish Health System, Glen Oaks, NY, USA
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Mahon K, Perez-Rodriguez M, Gunawardane N, Burdick KE. Dimensional endophenotypes in bipolar disorder: affective dysregulation and psychosis proneness. J Affect Disord 2013; 151:695-701. [PMID: 23993441 PMCID: PMC3844544 DOI: 10.1016/j.jad.2013.08.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [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: 07/02/2013] [Revised: 08/01/2013] [Accepted: 08/06/2013] [Indexed: 11/16/2022]
Abstract
BACKGROUND The clinical phenotype of bipolar disorder (BPD) is heterogeneous and the genetic architecture of the disorder is complex and not well understood. Given these complications, it is possible that the identification of intermediate phenotypes ("endophenotypes") will be useful in elucidating the complex genetic mechanisms that result in the disorder. The examination of unaffected relatives is critical in determining whether a particular trait is genetically-relevant to BPD. However, few dimensional traits related to BPD have been assessed in unaffected relatives of patients. METHODS We assessed affective temperament and schizotypy in 55 discordant sibling pairs and 113 healthy controls (HCs) using the Temperament Evaluation of Memphis, Pisa, Paris, and San Diego, Auto-questionnaire version (TEMPS-A) to assess affective temperament and the Schizotypal Personality Questionnaire (SPQ) to assess schizotypy. RESULTS BPD patients scored significantly higher than HCs on all subscales of the SPQ and on all but one subscale (hyperthymic) of the TEMPS-A (all p<0.01). Siblings demonstrated scores that were significantly intermediate to patients and HCs on the anxious subscale of the TEMPS-A and on the interpersonal deficits and disorganized subscales of the SPQ. LIMITATIONS We did not investigate the BPD spectrum as most patients were diagnosed with BPD I (n=47). Most of the patients had experienced psychosis (n=42) and so we were unable to examine whether psychosis status impacted upon affective temperament or schizotypy in patients or their siblings. CONCLUSION These data suggest that schizotypy and affective temperament represent dimensional traits that are likely to underlie the genetic risk for BPD.
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Affiliation(s)
- K Mahon
- Mount Sinai School of Medicine, Department of Psychiatry and Neuroscience, Friedman Brain Institute, New York, NY, USA.
| | - M Perez-Rodriguez
- Mount Sinai School of Medicine, Department of Psychiatry and Neuroscience, Friedman Brain Institute, New York, NY, USA,The Mental Health Patient Care Center and the Mental Illness Research Education and Clinical Center, James J. Peters Veterans Affairs Medical Center, Bronx, NY, USA
| | - N Gunawardane
- University of Buffalo School of Medicine, Buffalo, NY, USA
| | - KE Burdick
- Mount Sinai School of Medicine, Department of Psychiatry and Neuroscience, Friedman Brain Institute, New York, NY, USA
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Kothari R, Mahon K, Carrasco M. Characterizing visual performance fields in children. J Vis 2010. [DOI: 10.1167/5.8.186] [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: 11/24/2022] Open
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Dolny L, Mahon K. Systems thinking redux. A proven tool is revisited for solving large-scale problems. Health Forum J 2000; 43:46-7, 60. [PMID: 11186662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Affiliation(s)
- L Dolny
- PML Associates, Greenwood, S.C., USA
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Hatton KS, Mahon K, Chin L, Chiu FC, Lee HW, Peng D, Morgenbesser SD, Horner J, DePinho RA. Expression and activity of L-Myc in normal mouse development. Mol Cell Biol 1996; 16:1794-804. [PMID: 8657155 PMCID: PMC231166 DOI: 10.1128/mcb.16.4.1794] [Citation(s) in RCA: 93] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
To determine the role of L-Myc in normal mammalian development and its functional relationship to other members of the Myc family, we determined the normal patterns of L-myc gene expression in the developing mouse by RNA in situ hybridization and assessed the phenotypic impact of L-Myc deficiency produced through standard gene targeting methodology. L-myc transcripts were detected in the developing kidney and lung as well as in both the proliferative and the differentiative zones of the brain and neural tube. Despite significant expression of L-myc in developing mouse tissue, homozygous null L-myc mice were found to be viable, reproductively competent, and represented in expected frequencies from heterozygous matings. A detailed histological survey of embryonic and adult tissues, characterization of an embryonic neuronal marker, and measurement of cellular proliferation in situ did not reveal any congenital abnormalities. The lack of an apparent phenotype associated with L-Myc deficiency indicates that L-Myc is dispensable for gross morphological development and argues against a unique role for L-Myc in early central nervous system development as had been previously suggested. Although overlapping expression patterns among myc family members raise the possibility of complementation of L-Myc deficiency by other Myc oncoproteins, compensatory changes in the levels of c- and/or N-myc transcripts were not detected in homozygous null L-myc mice.
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Affiliation(s)
- K S Hatton
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, New York 10461, USA
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Abstract
The histone compositions of chromatin preparations obtained from different adult laukaemias were compared and showed differences between myeloid, monoblastic and lymphoblastic types. The differences were observed whether or not the myeloid precursors were mature or blast forms. Mixing experiments revealed that a potent histone protease was present in the myelocyte chromatin fraction which, unlike most histone proteases, appeared not to be inhibited by serine esterase inhibitors. It is concluded that the differences observed in the histone patterns do not reflect the histon composition present in the cell but are created by proteolytic degradation during the isolation procedures. However, these may still provide some help in identifying myeloblasts in undifferentiated leukaemias.
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