Genetic tests reveal extra-pair paternity among Gentoo penguins (Pyogoscelis papua ellsworthii) at Loveland Living Planet Aquarium: Implications for ex situ colony management.

Maintenance of ex situ populations for species conservation is a collaborative effort involving multiple agencies, institutions, and individuals around the world. Gentoo penguins (Pyogoscelis papua) are one species involved in such a conservation effort, and a Species Survival Plan (SSP) has been put in place by the Association of Zoos and Aquariums (AZA) to foster their long-term sustainability. As a part of their SSP, a Breeding and Transfer Plan has been created to support interagency exchanges of specimens. These transfers are vital to the demographic health and stability of ex situ populations, as well as the maintenance of genetic diversity. In populations such as the Gentoo, where social monogamy exists, paternal inferences of offspring are usually made through observation of birds' social behavior. However, social monogamy does not guarantee reproductive monogamy. In this study, we utilize Illumina high-throughput DNA sequencing to genetically test the postulated paternity of Gentoo penguins born at Loveland Living Planet Aquarium (LLPA) in Draper, UT. While our data support the majority of the postulated relationships, we did identify two offspring that were the result of extra-pair paternity (EPP). The results of this research highlight the importance of genetic tests to validate pedigrees used in SSPs, to provide more-accurate data for the support of species conservation.

The influence of patients' and primary care practitioners' beliefs and expectations about chronic musculoskeletal pain on the process of care: a systematic review of qualitative studies.

OBJECTIVES: To review qualitative, empirical studies exploring the influence of patients' and primary care practitioners' beliefs and expectations on the process of care for chronic musculoskeletal pain. METHODS: A multidisciplinary review group searched 9 bibliographic databases. The group worked in pairs to screen titles and abstracts for relevance, to quality appraise relevant studies, to extract data from high-quality studies and to undertake a thematic analysis of this data. RESULTS: We identified 12,994 abstracts from our searches, of which we obtained 113 full-text articles as their abstracts contained insufficient information for us to decide on their eligibility. We appraised 22 qualitative studies, 15 of which were included in the analysis. Themes identified included; (1) beliefs about pain, (2) expectations of treatment, (3) trust, and (4) patient education. Both patients and practitioners wanted clear communication within the consultation and to be respected, but conflicts existed on nearly all other aspects of the consultation, some of which at present may seem insurmountable and may lead to difficulties in achieving positive outcomes. DISCUSSION: To tackle the challenges and conflicts identified within the review, change may have to occur, not just in individual patient and practitioner beliefs and behavior, but also at an organizational and system level, for example, changes in undergraduate and postgraduate education and changes in the organization and availability of health services.

Relationship of the 1793G-A and 677C-T polymorphisms of the 5,10-methylenetetrahydrofolate reductase gene to coronary artery disease.

Numerous studies have investigated the relationship between polymorphisms, in particular 677C-T and 1298A-C, of the methylene-tetrahydrofolate reductase (MTHFR) gene and coronary artery disease (CAD) with conflicting results. This study investigates the potential association of two point mutations in MTHFR, 677C-T and 1793G-A, along with other risk factors, with CAD. This is the first hospital-based study to investigate 1793G-A in this context. Genotype analysis was performed on 729 Caucasians and 66 African Americans undergoing coronary angiography using a novel PCR-based assay involving formation of Holliday junctions. Allelic frequencies for 677C-T were 66.2% C and 33.8% T for Caucasians and 90.9% C and 9.1% T for African Americans. With respect to the 1793G-A polymorphism, allelic frequencies were 94.7% G and 5.3% A for Caucasians and 99.2% G and 0.8% A for African Americans. Disease associations were examined in the Caucasian patients due to their greater genotype variability and larger number in the patient cohort. Results suggest that neither 677CT heterozygotes (OR-1.36; 95% CI 0.95 to 1.96) nor mutant homozygotes (OR-0.73; 95% CI 0.44 to 1.20) have either an increased or decreased risk for CAD compared to the 677CC genotype. Likewise, the 1793GA genotype did not demonstrate a statistically significant association with CAD compared to 1793GG patients (OR-0.79; 95% CI 0.47 to 1.33). Mean homocysteine levels (mumol/L) increased from normal to mutant for 677C-T (677CC: 10.2; 677CT: 11.0; 677TT: 11.6) and normal to heterozygous in 1793G-A (1793GG: 10.7; 1793GA: 11.5). These MTHFR polymorphisms did not contribute to the prediction of clinically defined CAD in Caucasians.

A systematic review of psychological factors as predictors of chronicity/disability in prospective cohorts of low back pain.

STUDY DESIGN: A systematic review of prospective cohort studies in low back pain. OBJECTIVES: To evaluate the evidence implicating psychological factors in the development of chronicity in low back pain. SUMMARY OF BACKGROUND DATA: The biopsychosocial model is gaining acceptance in low back pain, and has provided a basis for screening measurements, guidelines and interventions; however, to date, the unique contribution of psychological factors in the transition from an acute presentation to chronicity has not been rigorously assessed. METHODS: A systematic literature search was followed by the application of three sets of criteria to each study: methodologic quality, quality of measurement of psychological factors, and quality of statistical analysis. Two reviewers blindly coded each study, followed by independent assessment by a statistician. Studies were divided into three environments: primary care settings, pain clinics, and workplace. RESULTS: Twenty-five publications (18 cohorts) included psychological factors at baseline. Six of these met acceptability criteria for methodology, psychological measurement, and statistical analysis. Increased risk of chronicity (persisting symptoms and/or disability) from psychological distress/depressive mood and, to a lesser extent, somatization emerged as the main findings. Acceptable evidence generally was not found for other psychological factors, although weak support emerged for the role of catastrophizing as a coping strategy. CONCLUSION: Psychological factors (notably distress, depressive mood, and somatization) are implicated in the transition to chronic low back pain. The development and testing of clinical interventions specifically targeting these factors is indicated. In view of the importance attributed to other psychological factors (particularly coping strategies and fear avoidance) there is a need to clarify their role in back-related disability through rigorous prospective studies.