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1.
J Psychiatr Res ; 82: 68-79, 2016 11.
Article in English | MEDLINE | ID: mdl-27468166

ABSTRACT

Trajectories of disaster-related posttraumatic stress disorder (PTSD) symptoms are often heterogeneous, and associated with common and unique risk factors, yet little is known about potentially modifiable psychosocial characteristics associated with low-symptom and recovering trajectories in disaster responders. A total of 4487 rescue and recovery workers (1874 police and 2613 non-traditional responders) involved during and in the aftermath of the unprecedented World Trade Center (WTC) attacks, were assessed an average of 3, 6, 8, and 12 years post-9/11/2001. Among police responders, WTC-related PTSD symptoms were characterized by four trajectories, including no/low-symptom (76.1%), worsening (12.1%), improving (7.5%), and chronic (4.4%) trajectories. In non-traditional responders, a five-trajectory solution was optimal, with fewer responders in a no/low-symptom trajectory (55.5%), and the remainder in subtly worsening (19.3%), chronic (10.8%), improving (8.5%), and steeply worsening (5.9%) trajectories. Consistent factors associated with symptomatic PTSD trajectories across responder groups included Hispanic ethnicity, pre-9/11 psychiatric history, greater WTC exposure, greater medical illness burden, life stressors and post-9/11 traumas, and maladaptive coping (e.g., substance use, avoidance coping). Higher perceived preparedness, greater sense of purpose in life, and positive emotion-focused coping (e.g., positive reframing, acceptance) were negatively associated with symptomatic trajectories. Findings in this unique cohort indicate considerable heterogeneity in WTC-related PTSD symptom trajectories over 12 years post-9/11/2001, with lower rates of elevated PTSD symptoms in police than in non-traditional responders. They further provide a comprehensive risk prediction model of PTSD symptom trajectories, which can inform prevention, monitoring, and treatment efforts in WTC and other disaster responders.


Subject(s)
Emergency Responders/psychology , Resilience, Psychological , September 11 Terrorist Attacks/psychology , Stress Disorders, Post-Traumatic/epidemiology , Stress Disorders, Post-Traumatic/psychology , Adult , Cohort Studies , Female , Humans , Male , Middle Aged
2.
J Health Care Chaplain ; 22(3): 85-101, 2016.
Article in English | MEDLINE | ID: mdl-27191221

ABSTRACT

There is an acute need to define the specific skills that make chaplains integral to the healthcare team. This prospective study attempts to identify those skills that may be specific to chaplains, for whom no other member of the health care team has similar training, and to examine if these skills have a differential effect on patient satisfaction. A total of 59 interventions were identified and grouped into 10 categories by focus groups comprised of chaplains. Subsequently, Principal Component Analysis yielded two independent variables; Component 1 representing the "Religious/Spiritual" dimension, and Component 2 representing the "Psychosocial" dimension of chaplains' work. The two components were used in an OLS regression model to measure patient satisfaction. Interventions that comprise the "Religious/Spiritual" dimension may be considered to be specific skills that chaplains contribute to patient care and these have a slightly stronger correlation with patient satisfaction than the interventions of the "Psychosocial" dimension.


Subject(s)
Chaplaincy Service, Hospital , Pastoral Care , Patient Satisfaction/statistics & numerical data , Aged , Female , Focus Groups , Humans , Male , Middle Aged , Outcome Assessment, Health Care , Patient Care Team/organization & administration , Prospective Studies
3.
Ann Glob Health ; 80(4): 320-31, 2014.
Article in English | MEDLINE | ID: mdl-25459334

ABSTRACT

BACKGROUND: The response to 9/11 continues into its 14th year. The World Trade Center Health Program (WTCHP), a long-term monitoring and treatment program now funded by the Zadroga Act of 2010, includes >60,000 World Trade Center (WTC) disaster responders and community members ("survivors"). The aim of this review is to identify several elements that have had a critical impact on the evolution of the WTC response and, directly or indirectly, the health of the WTC-exposed population. It further explores post-disaster monitoring efforts, recent scientific findings from the WTCHP, and some implications of this experience for ongoing and future environmental disaster response. FINDINGS: Transparency and responsiveness, site safety and worker training, assessment of acute and chronic exposure, and development of clinical expertise are interconnected elements determining efficacy of disaster response. CONCLUSION: Even in a relatively well-resourced environment, challenges regarding allocation of appropriate attention to vulnerable populations and integration of treatment response to significant medical and mental health comorbidities remain areas of ongoing programmatic development.


Subject(s)
Inhalation Exposure/adverse effects , Mental Disorders/epidemiology , Occupational Exposure/adverse effects , Population Surveillance , Rescue Work , Respiratory Tract Diseases/epidemiology , September 11 Terrorist Attacks , Disasters , Firefighters/psychology , Government Programs/legislation & jurisprudence , Health Impact Assessment , Humans , Inhalation Exposure/analysis , Mental Disorders/etiology , Occupational Exposure/analysis , Occupational Health , Police , Registries , Respiratory Tract Diseases/etiology , Safety , September 11 Terrorist Attacks/psychology , Survivors/psychology
4.
Psychiatr Serv ; 64(11): 1173-6, 2013 Nov 01.
Article in English | MEDLINE | ID: mdl-24185541

ABSTRACT

OBJECTIVE: This study assessed patient and clinician agreement about treatment type and its association with treatment helpfulness among World Trade Center rescue and recovery workers. METHODS: A total of 187 outpatients and 280 clinicians completed a survey, which gathered information on patient characteristics, treatment types, and treatment helpfulness. Kappa statistics and sensitivity and specificity analyses were used, and the association between patient-clinician agreement and reported treatment benefit was determined. RESULTS: Patient-clinician agreement was highest for group therapy, medication management, eye movement desensitization and reprocessing, and couples therapy. Agreement about medication management, individual psychotherapy, and workers' compensation evaluation was associated with higher reported treatment benefits. CONCLUSIONS: Findings support the hypothesis that agreement regarding treatment type is associated with higher reported benefit and extend findings of previous studies to a linguistically diverse, naturalistic sample exposed to a disaster trauma. Results also highlight the need for better understanding of eclectic therapies offered in real-world clinical practice.


Subject(s)
Emergency Responders/psychology , Mental Disorders/therapy , Physician-Patient Relations , September 11 Terrorist Attacks/psychology , Adult , Cluster Analysis , Factor Analysis, Statistical , Female , Health Care Surveys/statistics & numerical data , Humans , Male , Middle Aged , Psychotherapy/methods , Sensitivity and Specificity , Treatment Outcome
5.
Psychiatr Clin North Am ; 36(3): 417-29, 2013 Sep.
Article in English | MEDLINE | ID: mdl-23954056

ABSTRACT

The authors review the existing literature on the mental health impact of the September 11th attacks and the implications for disaster mental health clinicians and policy makers. The authors discuss the demographic characteristics of those affected and the state of mental health needs and existing mental health delivery services; the nature of the disaster and primary impacts on lives, infrastructure, and socioeconomic factors; the acute aftermath in the days and weeks after the attacks; the persistent mental health impact and evolution of services of the postacute aftermath; and the implications for future disaster mental health practitioners and policy makers.


Subject(s)
Disasters/statistics & numerical data , Early Medical Intervention/methods , Emergency Responders/psychology , Health Services Needs and Demand/statistics & numerical data , Mental Disorders/epidemiology , September 11 Terrorist Attacks/psychology , Stress Disorders, Post-Traumatic/epidemiology , Chronic Disease , Clinical Competence , Comorbidity , Crisis Intervention/methods , Disaster Planning/organization & administration , Early Medical Intervention/organization & administration , Emergency Responders/education , Health Services Accessibility/statistics & numerical data , Health Status , Humans , New York City/epidemiology , Policy Making , Risk Factors , September 11 Terrorist Attacks/statistics & numerical data , Stress Disorders, Post-Traumatic/prevention & control , Survivors/psychology , Time Factors , United States/epidemiology
6.
J Psychiatr Res ; 46(7): 835-42, 2012 Jul.
Article in English | MEDLINE | ID: mdl-22464942

ABSTRACT

BACKGROUND: This study examined the prevalence, correlates, and perceived mental healthcare needs associated with subsyndromal PTSD in police involved in the World Trade Center (WTC) rescue and recovery effort. METHODS: A total of 8466 police completed an interview/survey as part of the WTC Medical monitoring and Treatment Program an average of four years after 9/11/2001. RESULTS: The past month prevalence of full and subsyndromal WTC-related PTSD was 5.4% and 15.4%, respectively. Loss of someone or knowing someone injured on 9/11 (odds ratios [ORs]=1.56-1.86), pre-9/11 stressors (ORs=1.30-1.50), family support (ORs=0.83-0.94), and union membership (ORs=0.50-0.52) were associated with both full and subsyndromal PTSD. Exposure to the dust cloud (OR=1.36), performing search and rescue work (OR=1.29), and work support (OR=0.89) were additionally associated with subsyndromal PTSD. Rates of comorbid depression, panic disorder, and alcohol use problems (ORs=3.82-41.74), and somatic symptoms and functional difficulties (ORs=1.30-1.95) were highest among police with full PTSD, with intermediate rates among police with subsyndromal PTSD (ORs=2.93-7.02; and ORs=1.18-1.60, respectively). Police with full and subsyndromal PTSD were significantly more likely than controls to report needing mental healthcare (41.1% and 19.8%, respectively, versus 6.8% in trauma controls). CONCLUSIONS: These results underscore the importance of a more inclusive and dimensional conceptualization of PTSD, particularly in professions such as police, as operational definitions and conventional screening cut-points may underestimate the psychological burden for this population. Accordingly, psychiatric clinicians should assess for disaster-related subsyndromal PTSD symptoms in disaster response personnel.


Subject(s)
Police/statistics & numerical data , September 11 Terrorist Attacks , Stress Disorders, Post-Traumatic/epidemiology , Stress Disorders, Post-Traumatic/psychology , Adult , Aged , Depression/epidemiology , Female , Health Surveys , Humans , Male , Mental Disorders/epidemiology , Middle Aged , Odds Ratio , Retrospective Studies , Risk Factors , Stress Disorders, Post-Traumatic/complications , Stress, Psychological/epidemiology , Stress, Psychological/etiology
7.
J Psychiatr Pract ; 18(1): 55-63, 2012 Jan.
Article in English | MEDLINE | ID: mdl-22261985

ABSTRACT

More than 35,000 individuals are estimated to have responded to the World Trade Center (WTC) site following the terrorist attacks of September 11, 2001. The federally funded WTC Medical Monitoring and Treatment Program (WTCMMTP) provides medical monitoring and occupational medicine treatment as well as counseling regarding entitlements and benefits to the workers and volunteers who participated in the WTC response. A major component of the WTCMMTP is the WTC Mental Health Program (WTCMHP), which offers annual mental health assessments and ongoing treatment for those found to have 9/11 associated mental health problems. In the program's 9.5 years of evaluating and treating mental health problems in thousands of Ground Zero responders, diversity in multiple domains (e.g., gender, family, profession and employment status, state of physical health, cultural identity, and immigration status) has been a hallmark of the population served by the program. To illustrate the types of issues that arise in treating this diverse patient population, the authors first present a representative case involving a Polish asbestos worker with an alcohol use disorder. They then discuss how accepted alcohol treatment modalities can and often must be modified in providing psychiatric treatment to Polish responders, in particular, and to foreign-born patients in general. Treatment modalities discussed include cognitive and behavioral therapy, relapse prevention strategies, psychodynamic therapy, motivational approaches, family therapy, group peer support, and pharmacotherapy. Implications for the practice of addiction psychiatry, cultural psychiatry, and disaster psychiatry are discussed.


Subject(s)
Alcohol Drinking , Emergency Responders/psychology , Occupational Diseases , Psychotherapy/methods , September 11 Terrorist Attacks/psychology , Stress Disorders, Post-Traumatic , Alcohol Drinking/ethnology , Alcohol Drinking/psychology , Asbestos/adverse effects , Combined Modality Therapy , Emigrants and Immigrants/psychology , Ethnopsychology/methods , Humans , Male , Mental Health Services/organization & administration , Middle Aged , Monitoring, Physiologic/methods , Occupational Diseases/diagnosis , Occupational Diseases/etiology , Occupational Diseases/physiopathology , Occupational Diseases/psychology , Occupational Diseases/therapy , Occupational Exposure/adverse effects , Poland/ethnology , Psychotropic Drugs/therapeutic use , Regional Medical Programs/organization & administration , Secondary Prevention , Self-Help Groups , Stress Disorders, Post-Traumatic/diagnosis , Stress Disorders, Post-Traumatic/etiology , Stress Disorders, Post-Traumatic/physiopathology , Stress Disorders, Post-Traumatic/psychology , Stress Disorders, Post-Traumatic/therapy , Stress, Psychological/complications , Stress, Psychological/physiopathology , Stress, Psychological/psychology , United States , Volunteers/psychology
8.
Lancet ; 378(9794): 888-97, 2011 Sep 03.
Article in English | MEDLINE | ID: mdl-21890053

ABSTRACT

BACKGROUND: More than 50,000 people participated in the rescue and recovery work that followed the Sept 11, 2001 (9/11) attacks on the World Trade Center (WTC). Multiple health problems in these workers were reported in the early years after the disaster. We report incidence and prevalence rates of physical and mental health disorders during the 9 years since the attacks, examine their associations with occupational exposures, and quantify physical and mental health comorbidities. METHODS: In this longitudinal study of a large cohort of WTC rescue and recovery workers, we gathered data from 27,449 participants in the WTC Screening, Monitoring, and Treatment Program. The study population included police officers, firefighters, construction workers, and municipal workers. We used the Kaplan-Meier procedure to estimate cumulative and annual incidence of physical disorders (asthma, sinusitis, and gastro-oesophageal reflux disease), mental health disorders (depression, post-traumatic stress disorder [PTSD], and panic disorder), and spirometric abnormalities. Incidence rates were assessed also by level of exposure (days worked at the WTC site and exposure to the dust cloud). FINDINGS: 9-year cumulative incidence of asthma was 27·6% (number at risk: 7027), sinusitis 42·3% (5870), and gastro-oesophageal reflux disease 39·3% (5650). In police officers, cumulative incidence of depression was 7·0% (number at risk: 3648), PTSD 9·3% (3761), and panic disorder 8·4% (3780). In other rescue and recovery workers, cumulative incidence of depression was 27·5% (number at risk: 4200), PTSD 31·9% (4342), and panic disorder 21·2% (4953). 9-year cumulative incidence for spirometric abnormalities was 41·8% (number at risk: 5769); three-quarters of these abnormalities were low forced vital capacity. Incidence of most disorders was highest in workers with greatest WTC exposure. Extensive comorbidity was reported within and between physical and mental health disorders. INTERPRETATION: 9 years after the 9/11 WTC attacks, rescue and recovery workers continue to have a substantial burden of physical and mental health problems. These findings emphasise the need for continued monitoring and treatment of the WTC rescue and recovery population. FUNDING: Centers for Disease Control and Prevention and National Institute for Occupational Safety and Health.


Subject(s)
Morbidity , Rescue Work , September 11 Terrorist Attacks , Adult , Air Pollution/adverse effects , Asthma/epidemiology , Cohort Studies , Depression/epidemiology , Dust , Female , Gastroesophageal Reflux/epidemiology , Humans , Male , Mental Health , New York City/epidemiology , Panic Disorder/epidemiology , Respiratory Tract Diseases/epidemiology , Sinusitis/epidemiology , Stress Disorders, Post-Traumatic/epidemiology
9.
J Alzheimers Dis ; 17(4): 887-98, 2009.
Article in English | MEDLINE | ID: mdl-19542613

ABSTRACT

Brain-derived neurotrophic factor (BDNF) is a neurotrophin that promotes neuronal survival, growth, and differentiation. The role of BDNF in learning and memory suggests that it may also modulate the clinical course of Alzheimer's disease (AD). This study aimed to determine whether BDNF genetic variants are related to premorbid educational attainment, progression of cognitive and functional decline, and associated neuropsychiatric symptoms in AD patients. A sample of AD subjects (N = 341) was genotyped for the BDNF polymorphisms: Val66Met, C270T, and G-712A. Subjects received tests of cognition and daily function at baseline and at multiple subsequent time points. They were also characterized for the frequency and severity of neuropsychiatric symptoms. There was a significant effect of Val66Met genotype on educational attainment (F = 7.49, df = 2,329, P = 0.00066), with Met/Met homozygotes having significantly lower education than both the Val/Met and Val/Val groups. No association was observed between any BDNF polymorphism and measures of cognitive or functional decline. The T-allele of the C270T polymorphism was associated with a higher prevalence of neuropsychiatric symptoms and specifically with the presence of hallucinations. The effect of the Val66Met polymorphism on premorbid educational attainment is intriguing and should be verified in a larger sample.


Subject(s)
Alzheimer Disease/genetics , Brain-Derived Neurotrophic Factor/genetics , Cognition , Hallucinations/genetics , Aged , Aged, 80 and over , Alleles , Alzheimer Disease/physiopathology , Alzheimer Disease/psychology , Disease Progression , Educational Status , Female , Gene Frequency , Genetic Predisposition to Disease , Hallucinations/epidemiology , Humans , Male , Polymerase Chain Reaction , Polymorphism, Single Nucleotide , Prevalence , Retrospective Studies , Severity of Illness Index
10.
Curr Psychiatry Rep ; 10(4): 304-10, 2008 Aug.
Article in English | MEDLINE | ID: mdl-18627668

ABSTRACT

This review discusses selected neurobiologic and genetic factors-including noradrenergic and hypothalamic-pituitary-adrenal axis markers, oxytocin pathways, and serotonin transporter and brain-derived neurotrophic factor gene polymorphisms-in the context of resilience to stress, with an emphasis on social support. Social support's impact on medical and psychiatric health outcomes is reviewed, and putative mediators are discussed. The reviewed literature indicates that social support is exceptionally important to maintaining good physical and psychological health in the presence of genetic, developmental, and other environmental risks. Future studies should continue to explore the neurobiologic factors associated with social support's contribution to stress resilience.


Subject(s)
Attitude , Brain/metabolism , Hypothalamo-Hypophyseal System/physiology , Pituitary-Adrenal System/physiology , Social Support , Stress, Psychological/genetics , Stress, Psychological/psychology , Brain-Derived Neurotrophic Factor/genetics , Dehydroepiandrosterone/metabolism , Humans , Oxytocin/genetics , Psychology , Serotonin Plasma Membrane Transport Proteins/genetics
12.
Psychiatry (Edgmont) ; 4(5): 35-40, 2007 May.
Article in English | MEDLINE | ID: mdl-20806028

ABSTRACT

Numerous studies indicate social support is essential for maintaining physical and psychological health. The harmful consequences of poor social support and the protective effects of good social support in mental illness have been well documented. Social support may moderate genetic and environmental vulnerabilities and confer resilience to stress, possibly via its effects on the hypothalamic-pituitary-adrenocortical (HPA) system, the noradrenergic system, and central oxytocin pathways. There is a substantial need for additional research and development of specific interventions aiming to increase social support for psychiatrically ill and at-risk populations.

13.
Am J Med Genet B Neuropsychiatr Genet ; 141B(6): 673-7, 2006 Sep 05.
Article in English | MEDLINE | ID: mdl-16838359

ABSTRACT

Numerous lines of evidence support the role of the catecholamines in the development of tics and Gilles de la Tourette syndrome (GTS). Dopamine-beta-hydroxylase (DBH) is the key enzyme in the conversion of dopamine to norepinephrine and the alleles of several polymorphisms of the DBH gene are correlated with individual variation in serum levels of the enzyme. We investigated the genetic relationship of the gene for DBH to GTS in two samples, one collected in Canada and one collected in Turkey. In total 106 affected probands and siblings in 71 nuclear pedigrees and 40 affected individuals and 71 family members in five multi-generational pedigrees were genotyped for three polymorphisms in the DBH locus. In the Canadian pedigrees we found no convincing evidence for linkage either in the multi-generational pedigrees or association in the nuclear families. We found significant evidence for association in the Turkish pedigrees (n = 29) for the 19 bp insertion/deletion markers; however, there was no supporting evidence for association with the other two markers. Based on the small sample size and low number of informative transmissions, we conclude that the results from the 19 bp insertion/deletion markers may be a chance false positive finding. These findings, in total, suggest that the DBH locus is unlikely to be a major gene influencing the susceptibility to DBH.


Subject(s)
Dopamine beta-Hydroxylase/genetics , Tourette Syndrome/enzymology , Base Sequence , Canada , DNA Primers , Humans , Polymorphism, Genetic , Tourette Syndrome/genetics , Turkey
14.
Am J Med Genet B Neuropsychiatr Genet ; 141B(4): 387-93, 2006 Jun 05.
Article in English | MEDLINE | ID: mdl-16649215

ABSTRACT

Genetic variation at the locus encoding the brain derived neurotrophic factor (BDNF) has been implicated in some neuropsychiatric disorders such as Alzheimer's disease (AD), affective disorders (AFDs), schizophrenia, and substance dependence. We therefore performed a mutation scan of the BDNF gene to identify novel gene variants and examined the association between BDNF variants and several neuropsychiatric phenotypes in European American (EA) subjects and controls. Using denaturing high performance liquid chromatography (dHPLC), we identified a novel variant (G-712A) in the putative promoter region. This variant and two previously reported BDNF SNPs (C270T and Val66Met) were genotyped in 295 patients with AD, 108 with AFDs, 96 with posttraumatic stress disorder (PTSD), 84 with schizophrenia, 327 with alcohol and/or drug dependence, and 250 normal control subjects. No association was found between these three BDNF gene variants and AD, AFDs, PTSD, or schizophrenia. However, there was a nominally higher frequency of the G-712A G-allele and the G/G genotype in subjects with substance dependence than in controls (Allele: chi(2) = 4.080, df = 1, P = 0.043; Genotype: chi(2) = 7.225, df = 2, P = 0.027). Although after correction for multiple testing, the findings are not considered significant (threshold P-value was set at 0.020 by the program SNPSpD), logistic regression analyses confirmed the modest association between SNP G-712A and substance dependence, when the sex and age of subjects were taken into consideration. The negative results for AFDs, PTSD, and schizophrenia could be due to the low statistical power. Further study with larger samples is warranted.


Subject(s)
Alzheimer Disease/genetics , Brain-Derived Neurotrophic Factor/genetics , Mood Disorders/genetics , Schizophrenia/genetics , Stress Disorders, Post-Traumatic/genetics , Substance-Related Disorders/genetics , Adult , Aged , Chromatography, High Pressure Liquid/methods , DNA Mutational Analysis , Female , Gene Frequency , Genotype , Haplotypes , Humans , Linkage Disequilibrium , Logistic Models , Male , Middle Aged , Polymorphism, Single Nucleotide
15.
Horm Res ; 63(4): 159-64, 2005.
Article in English | MEDLINE | ID: mdl-15795512

ABSTRACT

OBJECTIVE: To investigate if there are any disease-related or methylphenidate-induced aberrations in growth parameters, growth hormone insulin-like growth factor (IGF)-I, IGFBP-3 axis and the thyroid function tests in children with attention deficit hyperactivity disorder (ADHD). METHODS: Newly diagnosed and untreated prepubertal children with ADHD were longitudinally followed before and approximately every 4 months after methylphenidate treatment for up to 16 months. Height SDS, weight SDS, BMI SDS, serum GH, IGF-I, IGFBP-3, T4, free T4, T3, and TSH were measured at each visit. RESULTS: All of the examined parameters were within normal limits for age before treatment. Methylphenidate treatment did not significantly affect SDS of height, weight, BMI, IGF-I and IGFBP-3 in the long run. Serum T4 and free T4 levels showed modest reductions within normal limits in a time-dependent manner. CONCLUSIONS: Prepubertal children with ADHD had normal height, weight, BMI, serum IGF-I and IGFBP-3 and thyroid functions. Methylphenidate treatment had no sustained effects on growth parameters, IGF-I and IGFBP-3 during the follow-up period of this study. However, it caused a mild decrease in total and free T4 which may warrant further monitoring.


Subject(s)
Attention Deficit Disorder with Hyperactivity/drug therapy , Central Nervous System Stimulants/administration & dosage , Insulin-Like Growth Factor Binding Protein 3/blood , Insulin-Like Growth Factor I/analysis , Methylphenidate/administration & dosage , Thyroid Gland/metabolism , Attention Deficit Disorder with Hyperactivity/blood , Body Height/drug effects , Body Weight/drug effects , Case-Control Studies , Child , Child, Preschool , Humans , Infant , Infant, Newborn , Thyroid Hormones/blood
16.
Am J Med Genet B Neuropsychiatr Genet ; 119B(1): 54-9, 2003 May 15.
Article in English | MEDLINE | ID: mdl-12707939

ABSTRACT

Gilles de la Tourette Syndrome (GTS) has long been known to be familial, and evidence from twin studies indicates that it has a substantial genetic component. Our genome scan of sibling pair families with GTS found evidence suggestive of linkage to several chromosomal locations. On the basis of these findings, we have begun to study additional markers in these regions, with some of the markers located in candidate genes. Two candidate genes stand out in these regions: the adrenergic receptor alpha 1C(1A) (ADRA1C) located on chromosome 8p and the adrenergic receptor alpha 2A (ADRA2A) located on chromosome 10q. The adrenergic system has been suggested to play a role in GTS based on the reduction of symptoms with the adrenergic receptor agonists, clonidine and guanfacine. We examined the inheritance of polymorphisms in the ADRA2A and ADRA1C genes in 113 nuclear families identified through a GTS proband. We found no significant evidence for linkage using the transmission disequilibrium test for these two genes. Based on our families, we conclude that these genes are not major genetic factors contributing to the susceptibility to GTS.


Subject(s)
Receptors, Adrenergic, alpha-1/genetics , Receptors, Adrenergic, alpha-2/genetics , Tourette Syndrome/genetics , Family Health , Genetic Predisposition to Disease , Genotype , Humans , Inheritance Patterns , Linkage Disequilibrium , Turkey
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