Bipolar disorder (BPD) is a serious mood disorder that affects about 1% of the population of the United States. Twin, family, and adoption studies have shown evidence for a genetic component of BPD, but monozygotic twin concordance is less than one, indicating that BPD is a mulitfactorial disorder. First-degree relatives of an individual with BPD have approximately a 3-15% risk of developing BPD because of shared genes and environment. No strong genetic susceptibility loci for BPD have been located, although some regions of interest are currently being evaluated. With increasing genetic information, it is expected that demand for genetic counseling for BPD and other psychiatric disorders will increase. This project is relevant to public health because BPD is a common disorder with a significant disease burden. Understanding the needs and concerns of the patient population can help tailor care and reduce the burden of the disease. Using anonymous surveys and a semi-structured interview for individuals with BPD and their first-degree relatives, the knowledge, opinions, and acceptance of genetic counseling in this population have been studied. The Health Belief Model was used to assess current health beliefs relating to BPD. Additionally, using a brief educational session, the effect of education on knowledge and health beliefs was assessed. Preliminary data show that the perceived severity of BPD, susceptibility to BPD, and perceived benefit of genetic information were high at 4.33, 4.45, and 4.36 out of 5, respectively, while the cumulative perceived barriers to testing were moderate to high at 3.09 out of 5. Preliminary data also show that the knowledge of BPD in affected individuals is high at 7 (±1.15) out of 8.

Type 1 diabetes mellitus (T1D) is a disease of major public health concern as it is one of the most common diseases of childhood and costs millions of dollars in health care each year in the U.S. T1D is an autoimmune disease and is caused by multiple factors including genetics, autoimmunity, and environment. The genetics of T1D is complex as there are multiple genes thought to play a role in its susceptibility, with the best defined risks associated with the HLA-DQ molecule. This study analyzes the role of the DQ molecule in 265 diabetic children and 1000 unaffected first degree relatives in order to further support the current literature of the presence of specific DQ alleles and haplotypes with a large representative sample from the U.S. In the diabetic probands, the analysis was supported by the previous literatures for the presence of non-Asp 57 alleles but not for the presence of the DQ2 and DQ8 haplotypes. In this study, 94.14% (96.65% including the DR2 group) have at least one non-Asp allele with a breakdown of 30.54% as non-Asp/Asp (33.05% including DR2) and 63.60% with non-Asp/non-Asp, and 6% Asp/Asp. The distribution of the DQ2 and DQ8 haplotypes includes, 78.63% possessing DQ2 and/or DQ8 haplotypes with 6.49% as DQ2 homozygotes (DQ2/DQ2), 4.96% as DQ8 homozygotes (DQ8/DQ8), and 16.79% as DQ2/DQ8 heterozygotes. These figures are only slightly higher when looking at the Caucasians or the individuals with younger ages of onset. These unexpected results may be the result of clinical or ethnic variability in the population, however further investigation is warranted. While there is limited information available of the non-Asp alleles and DQ2 and DQ haplotypes for first degree relatives, the results in the study seem to be supported both by previous studies and on the risks associated with each haplotype. Results show that 33.59% non-Asp/non-Asp, 58.2% Asp/non-Asp (with 14.55% of these individuals non-Asp/0602 specifically), and 8.21% Asp/Asp. In the DQ2 and DQ8 analysis 68.34% had DQ2 and/or DQ8 haplotypes, with 31.94% as DQ2 homozygotes or heterozygotes, 30.11% were either DQ8 homozygous or heterozygous, and 6.31% were DQ2/DQ8 heterozygotes.

Since September 1992, Sickle Cell Trait (SCT) has been a standard on the state of Pennsylvanias newborn screen. Therefore, as of 2006, all middle school aged children will have had newborn screening. Currently, no information about Sickle Cell Disease or trait is included in the curriculum of the Pittsburgh Public Schools (K-12). There are three goals for this project: To educate the teenagers of Pennsylvania about Sickle Cell Disease and Trait, teaching them what their trait or disease status means for their health, and for their future childrens health; To provide the schools with an appropriate curriculum and; To create a module that can be repeated in school systems throughout the country. Approval of funding by the Pittsburgh Public Schools Board of Education allowed for the hiring of three teachers to aid in the writing of an appropriate curriculum. The curriculum includes three lessons that involve watching a video, writing informational materials, learning about genetics, and creating a poster. To assess this program and its effectiveness, health teachers critiqued the curriculum designed by their peers and provided feedback on ways to improve the implementation of new health material to existing lesson plans. After making modifications from this feedback, future projects may include adding a Sickle Cell Disease and Trait curriculum into the high school and eventually elementary schools. We would like to eventually share the curriculum online through a dependable source so schools throughout the nation have access to the lesson plans. The project is relevant to the field of public health because it directly educates individuals about SCT and SCD at an early age. They will be able to reference this information in the future when they are faced with making reproductive decisions.

The American Cancer Society estimates that >500,000 new cases of squamous cell carcinomas of the head and neck (SCCHN) are diagnosed each year. Although the incidence varies widely around the world, it is especially high in developing countries and is positively associated with higher rates of exogenous risk factors including, smoking, alcohol use, and viral infection. But, only a fraction of the people in these high-risk groups will develop the disease. Treatment times tend to be long and costly with survival rates averaging 50%, one of the lowest for the major cancers. Therefore, further work is needed to aid in our understanding of genetic and environmental risk factors, as well as the underlying biology of SCCHN. To further assess the etiology of SCCHN, the study used the approach of examining one candidate gene, the Ataxia Telangiectasia Mutated gene (ATM), located at 11q22.3 and functioning in the DNA damage response/repair pathway. Compared to other cancers, SCCHN tumors exhibit a very high rate of chromosomal instability, often showing amplification of chromosome 11q13 and loss of 11q22-qter. We hypothesized that SCCHN patients (cases) have a higher incidence of germline alterations in ATM than controls. Three hundred cases and 360 controls were genotyped for nine ATM tag-SNPs and supplemented with one splice-site SNP. Logistic regression analysis showed that two SNPs (rs611646 and rs373759) were associated with increased risk of developing SCCHN: P = 0.012 and P = 0.025, respectively. In SNP rs611646, the TT genotype was more common in cases than controls (45 versus 32%) while the AA and AT genotypes were less common in cases than controls (18 versus 21% and 37 versus 46%, respectively). In SNP rs373759, the CC genotype was more common in cases than controls (56 versus 48%) with the CT type being less common in cases than controls (29 versus 40%). Genetic studies such as this could have a public health impact by identifying markers for early detection of SCCHN, for predicting prognosis, for therapy and drug development, and aiding in the development of new, individualized treatment strategies.

Coronary heart disease (CHD) is a major public health concern, affecting almost 16 million people in the U.S. and leading to 452,300 deaths in 2004 alone. Low levels of high density lipoprotein (HDL) cholesterol have been shown to increase the risk for cardiovascular disease (CVD). The role of genetics in affecting total cholesterol, HDL-cholesterol, and triglycerides levels is significant, with heritability estimates exceeding 50%. Recent studies have identified major loci associated with HDL-cholesterol through genome-wide association studies, which investigated influences of common variants on common traits. Relatively few studies have investigated the impact of rare variants (or common variants with a modest affect) on common disease. The aim of our study was to evaluate the genetic variation in APOA2 (a biological candidate gene involved in HDL metabolism) in relation to HDL-cholesterol levels in epidemiological samples of African Blacks and U.S. Non-Hispanic Whites (NHWs). We resequenced APOA2 in individuals with HDL-cholesterol levels in the upper 5th percentile (47 NHWs and 48 Blacks) and lower 5th percentile (48 NHWs and 47 Blacks), allowing us to identify both rare and common variants. Common tagSNPs and all rare variants have been screened in the larger NHW and Black samples for associations with HDL-cholesterol levels. We detected a total of 26 variants (25 single nucleotide substitutions and 1 microsatellite); 12 of which were previously unreported. Of the 12 new variants, 6 were present in NHWs and 6 in Blacks. We observed an increased number of minor alleles of APOA2 variants (either increased heterozygosity for rare variants or increased homozygosity for common variants) in subjects with low HDL levels, more pronounced in NHWs. We performed a preliminary analysis using a total of 9 variants that were screened in NHWs (n=624, 8 variants) and Blacks (n=788, 5 variants) with TaqMan SNP genotyping assays to date. For the 8 variants that were screened in NHWs, we found significant association in only females for variants 2233C>T/rs6413453 (p=0.028) and 3251A>G (p=0.023). Completing genotyping for remaining variants will allow us to determine the extent to which APOA2 variants influence HDL levels.

Research Purposes: Multiple studies have quantified the direct and indirect costs of cancer care; however, there is little attention to how concerns about costs impact the emotional health of family caregivers. The purpose of this study, using the Pittsburgh Mind Body Center Model, was to evaluate how perceptions of economic hardship influence burden, anxiety, and depressive symptoms in caregivers of persons with a primary malignant brain tumor. Methods: Data were from an ongoing, longitudinal study (NCI R01CA118711). Caregiver (CG)/care recipient (CR) dyads (n=33) were recruited within a month of the CRs diagnosis; data were collected at the point of diagnosis and 4 months later. CRs were questioned using the Neurocognitive Status Exam (NCSE) and CGs completed questionnaires to determine perceptions of economic hardship, burden (Caregiver Reaction Assessment), anxiety (POMS), and depressive symptoms (CES-D). Linear regression was used to examine relationships among variables. Results: Perceived economic hardship had a significant effect on two CG burden subscales: feelings that providing care negatively affected ones schedule, and feelings of abandonment. Economic hardship did not predict CG burden due to schedule at baseline, but did significantly (p<.01) predict burden 4 months later. Alternately, economic hardship predicted burden due to feelings of abandonment at the time of diagnosis (p<.01), but not 4 months into the care situation. CG depression was predicted by economic hardship 4 months after diagnosis (p=.05), but not at the initial interview. Economic hardship predicted CG anxiety at both the time of diagnosis and at the second interview (p<.01). Conclusions: Results suggest that caregivers perception of economic hardship may be an important yet variable aspect of the burden, anxiety, and depression caregivers feel at the time of diagnosis and throughout the care situation. Public Health Significance: Caregivers of persons with a chronic disease such as cancer face financial pressure that may have negative emotional consequences. Although it may not be feasible to alleviate economic hardship, interventions may be effective in decreasing associated feelings of burden and anxiety during the care situation, and preventing the escalation of depressive symptoms.

OBJECTIVES: Increased physical activity is associated with decreased risk for several chronic diseases, including hypertension and diabetes. Although African Americans are at increased risk for these conditions, there is little knowledge about factors that influence physical activity in this population. We investigated whether physical activity could be predicted by baseline variables including: demographic, medical, anthropometric, fitness, stress and family health factors. <br><br>METHODS: Of 1,879 participants (85% female, median age = 51) from the Healthy Black Family Project who completed a baseline fitness assessment and questionnaire over an 18-month period, 988 attended at least one exercise class (active group) and 891 never attended an exercise class (non-active group). Of all 1,879 participants, 98 individuals also completed a family history with a genetic counseling student three months before or after their initial assessment. Multiple linear regression, t-tests, and chi-squared analyses were conducted to test for effects on activity level and differences between groups. <br><br>RESULTS: In the active group, the average number of exercise classes attended was 14. Analyses indicated that increased activity was significantly correlated with increased percent body fat (p = 0.001), decreased BMI (p = 0.028) and decreased flexibility (p = 0.088). In the top quartile of the active group, family history of diabetes (p = 0.006) and personal history of cardiovascular concerns (p = 0.016) predicted activity. These findings accounted for 2 and 5.3% of variation in activity, respectively. There were many significant findings between the non-active and active groups, indicating that individuals in poorer health and at greater risk for disease tend to be more active. Individuals who completed a family history risk assessment were also more likely to be active. <br><br>CONCLUSIONS: Results indicate that baseline physical measurements as well as individual and family health variables are correlated with activity levels in African Americans. Dynamics of the Healthy Black Family Project likely contribute to at-risk individuals being more active.<br> <br> IMPLICATIONS FOR PUBLIC HEALTH: Community intervention programs targeting African Americans at high risk for chronic disease aim to reduce health disparities. Identifying factors that influence physical activity among this population will enable interventions to tailor services to encourage activity and reduce risk for disease.

Individuals with a personal or family history of cancer can pursue testing for mutations in BRCA1 and BRCA2, breast and ovarian cancer susceptibility genes, in order to help them make decisions about cancer risk-reducing surgeries and other management options. However, this genetic testing can also have emotional consequences, not only for the tested individual but also for his or her relatives since testing can provide risk information for them as well. Thus, this study investigated the impact of BRCA testing on family dynamics and family relationships. A qualitative research design was employed, in which a secondary analysis was conducted on interview transcripts. In the initial study, two open-ended, tape-recorded interviews were performed using grounded theory methodology with each of 12 participants approximately three years apart. All participants had tested positive for a mutation in either BRCA1 or BRCA2. Thematic analysis of interview transcripts was conducted in the current secondary analysis to characterize family relationships after BRCA testing. Three main themes were identified: 1. That the first in the family to have testing or seek genetic counseling takes on a special family role that can be difficult for them; 2. That discussions in the family, especially those associated with BRCA testing, often change after genetic testing; and 3. That individuals may feel more or less connected to certain family members after genetic testing has occurred in the family. These changes in family dynamics seem to depend on the family history of cancer, prior relationships within the family, emotional coping strategies of relatives, value placed on particular communication patterns, and sharing or not sharing the familys BRCA mutation. The results of this study highlight the profound changes in family life that can occur after BRCA testing. Health professionals can use the insight they gain from this study in their management of patients considering BRCA testing. This work also has public health relevance since it describes how genetic testing for susceptibility to a common disease can influence family dynamics. Such an understanding will be important as the genetic basis of common disease becomes better understood and tests for additional susceptibility genes become available.

Alzheimers disease (AD) is a complex and multifactorial disease with the possible involvement of several genes. Complex diseases such as AD have a large affect on the public health. It was estimated in 2007 that over 5 million Americans had AD, and more than $91 billion dollars was spent by medicare on AD and other dementias. Genetics plays a significant role in the etiology of the disease, therefore, it is of public health importance that the genetics of AD be investigated. With the exception of the APOE gene as a susceptibility marker no other genes have been identified for late-onset AD (LOAD). A recent genome wide association study of 17,343 gene-based putative functional single nucleotide polymorphisms (SNPs) found 19 significant variants, including 3 linked to APOE, showing association with LOAD in several population samples. We have set out to replicate the 16 new significant associations in a large case-control cohort of American Whites. Additionally we examined six variants present in positional and/or biological candidate genes for AD. We genotyped the 22 SNPs in up to 1,009 Caucasian Americans with LOAD and up to 1,010 age matched older healthy Caucasian Americans. All variants were genotyped using 5 nuclease assays. We did not observe a statistically significant association between the SNPs with the risk of AD, either individually or stratified by APOE. Our data suggest that the association of the studied variants with LOAD, if it exists, is not statistically significant in our population study.

The risk to develop a substance use disorder (SUD) is a significant public health concern, particularly as it relates to prevention and intervention strategies. Elucidation of the possible precursors to SUD is an objective of this study. The main purpose of this research was to evaluate the relationship between the childs perception of parental behavior and his/her risk for SUD as measured by an index of transmissible liability (TLI). Previous research points to a relationship between parental behavior and behavior problems in the child, which includes substance use disorders. Additionally, much of this research suggests the presence of genetic effects contributing to the individual variation in these traits. Participants were self-selected twin pairs and at least one parent attending the Twins Days Festival (Twinsburg, OH) in 2006 and 2007. Biometrical genetic analysis was applied to the sample of twin pairs on a measure of parental behavior perception (PB) and the TLI. Results of the research indicate that childrens perception of parental behavior is associated with liability for substance use disorders. It was found that the variation in parental behavior perception is due to shared and unique environmental effects, whereas the TLI has a high heritability (h2 = 0.79). The study also validates the liability index as a measure of transmissible risk for substance use disorders as well as provides support for the PB scale as a measure of an aspect of the childs environment.