Data Collection and Harmonization in HIV Research: The Seek, Test, Treat, and Retain Initiative at the National Institute on Drug Abuse.

Large-scale, multisite data sets offer the potential for exploring the public health benefits of biomedical interventions. Data harmonization is an emerging strategy to increase the comparability of research data collected across independent studies, enabling research questions to be addressed beyond the capacity of any individual study. The National Institute on Drug Abuse recently implemented this novel strategy to prospectively collect and harmonize data across 22 independent research studies developing and empirically testing interventions to effectively deliver an HIV continuum of care to diverse drug-abusing populations. We describe this data collection and harmonization effort, collectively known as the Seek, Test, Treat, and Retain Data Collection and Harmonization Initiative, which can serve as a model applicable to other research endeavors.

CCA1 and ELF3 Interact in the control of hypocotyl length and flowering time in Arabidopsis.

The circadian clock is an endogenous oscillator with a period of approximately 24 h that allows organisms to anticipate, and respond to, changes in the environment. In Arabidopsis (Arabidopsis thaliana), the circadian clock regulates a wide variety of physiological processes, including hypocotyl elongation and flowering time. CIRCADIAN CLOCK ASSOCIATED1 (CCA1) is a central clock component, and CCA1 overexpression causes circadian dysfunction, elongated hypocotyls, and late flowering. EARLY FLOWERING3 (ELF3) modulates light input to the clock and is also postulated to be part of the clock mechanism. elf3 mutations cause light-dependent arrhythmicity, elongated hypocotyls, and early flowering. Although both genes affect similar processes, their relationship is not clear. Here, we show that CCA1 represses ELF3 by associating with its promoter, completing a CCA1-ELF3 negative feedback loop that places ELF3 within the oscillator. We also show that ELF3 acts downstream of CCA1, mediating the repression of PHYTOCHROME-INTERACTING FACTOR4 (PIF4) and PIF5 in the control of hypocotyl elongation. In the regulation of flowering, our findings show that ELF3 and CCA1 either cooperate or act in parallel through the CONSTANS/FLOWERING LOCUS T pathway. In addition, we show that CCA1 represses GIGANTEA and SUPPRESSOR OF CONSTANS1 by direct interaction with their promoters, revealing additional connections between the circadian clock and the flowering pathways.

The Jumonji C domain-containing protein JMJ30 regulates period length in the Arabidopsis circadian clock.

Histone methylation plays an essential role in regulating chromatin structure and gene expression. Jumonji C (JmjC) domain-containing proteins are generally known as histone demethylases. Circadian clocks regulate a large number of biological processes, and recent studies suggest that chromatin remodeling has evolved as an important mechanism for regulating both plant and mammalian circadian systems. Here, we analyzed a subgroup of JmjC domain-containing proteins and identified Arabidopsis (Arabidopsis thaliana) JMJ30 as a novel clock component involved in controlling the circadian period. Analysis of loss- and gain-of-function mutants of JMJ30 indicates that this evening-expressed gene is a genetic regulator of period length in the Arabidopsis circadian clock. Furthermore, two key components of the central oscillator of plants, transcription factors CIRCADIAN CLOCK ASSOCIATED1 and LATE ELONGATED HYPOCOTYL, bind directly to the JMJ30 promoter to repress its expression, suggesting that JMJ30 regulates the pace of the circadian clock in close association with the central oscillator. JMJ30 represents, to our knowledge, the first JmjC domain-containing protein involved in circadian function, and we envision that this provides a possible molecular connection between chromatin remodeling and the circadian clock.

HPV knowledge among HPV+ women.

OBJECTIVE: To assess knowledge and information seeking among women recently receiving an HPV+ diagnosis. METHODS: A 2-phase mixed methods design was used. In both phase I (qualitative) and phase II (quantitative), women with scheduled gynecological exams and Pap smears at clinic sites were approached to participate. RESULTS: Women expressed confusion about HPV, and most could not correctly articulate the meaning of their diagnosis. Women do engage in further information seeking, especially through the Internet. CONCLUSION: Identifying gaps in knowledge among HPV+ women who need clear messages to facilitate their comprehension of the diagnosis is an important public health activity.

The psychosocial burden of HPV: a mixed-method study of knowledge, attitudes and behaviors among HPV+ women.

Despite an increased awareness and 'normalization' of Human Papillomavirus (HPV) following the release of the HPV vaccine, the psychosocial impact of an HPV infection, the most common sexually transmissible infection (STI), must not be overshadowed. This study employed in-depth interviews (N = 52) and quantitative surveys (N = 154) to assess the knowledge, emotional impact and behavioral consequences of an HPV-related diagnosis in women who had received abnormal Pap test results. Findings revealed confusion over test results and themes related to stigma, fear, self-blame, powerlessness and anger emerged. The promotion of the HPV vaccine should not obfuscate the psychosocial burden associated with an HPV diagnosis.

Isolation of a novel family of genes related to 2-oxoglutarate-dependent dioxygenases from soybean and analysis of their expression during root nodule senescence.

A screen for genes involved in root nodule senescence has led to the isolation of the senescence-associated nodulin 1 (SAN1) multigene family from Glycine max (soybean). The three, tandemly repeated SAN1 genes each have three exons and two introns and are highly conserved. SAN1A and SAN1B code for conceptual proteins of 352 and 353 amino acids, respectively, and share over 83% sequence identity, while SAN1C encodes a truncated protein of 126 amino acids and is likely to be a pseudogene. The SAN1-encoded proteins share sequence similarity and highly conserved motifs with plant 2-oxoglutarate-dependent dioxygenases (2-ODDs), suggesting that they encode 2-ODDs. Analyses of the steady-state mRNA levels of SAN1A and SAN1B during senescence induced by treatment with fixed nitrogen or darkness demonstrate that SAN1A is downregulated during induced senescence. In contrast, SAN1B is upregulated by both treatments. The expression of the SAN1 genes is not restricted to nodules, suggesting that in addition to their function(s) in these organs, they play a more general role in plant metabolism.