Ventral hippocampal projections to infralimbic cortex and basolateral amygdala are differentially activated by contextual fear and extinction recall.

Fear and extinction learning are thought to generate distinct and competing memory representations in the hippocampus. How these memory representations modulate the expression of appropriate behavioral responses remains unclear. To investigate this question, we used cholera toxin B subunit to retrolabel ventral hippocampal (vHPC) neurons projecting to the infralimbic cortex (IL) and basolateral amygdala (BLA) and then quantified c-Fos immediate early gene activity within these populations following expression of either contextual fear recall or contextual fear extinction recall. Fear recall was associated with increased c-Fos expression in vHPC projections to the BLA, whereas extinction recall was associated with increased activity in vHPC projections to IL. A control experiment was performed to confirm that the apparent shift in projection neuron activity was associated with extinction learning rather than mere context exposure. Overall, results indicate that hippocampal contextual fear and extinction memory representations differentially activate vHPC projections to IL and BLA. These findings suggest that hippocampal memory representations orchestrate appropriate behavioral responses through selective activation of projection pathways.

Halogen Bonding Promotes Higher Dye-Sensitized Solar Cell Photovoltages.

We report here an enhancement in photovoltage for dye-sensitized solar cells (DSSCs) where halogen-bonding interactions exist between a nucleophilic electrolyte species (I(-)) and a photo-oxidized dye immobilized on a TiO2 surface. The triarylamine-based dyes under investigation showed larger rate constants for dye regeneration (kreg) by the nucleophilic electrolyte species when heavier halogen substituents were positioned on the dye. The open-circuit voltages (VOC) tracked these kreg values. This analysis of a homologous series of dyes that differ only in the identity of two halogen substituents provides compelling evidence that the DSSC photovoltage is sensitive to kreg. This study also provides the first direct evidence that halogen-bonding interactions between the dye and the electrolyte can bolster DSSC performance.

Evidence for Interfacial Halogen Bonding.

A homologous series of donor-π-acceptor dyes was synthesized, differing only in the identity of the halogen substituents about the triphenylamine (TPA; donor) portion of each molecule. Each Dye-X (X=F, Cl, Br, and I) was immobilized on a TiO2 surface to investigate how the halogen substituents affect the reaction between the light-induced charge-separated state, TiO2 (e(-) )/Dye-X(+) , with iodide in solution. Transient absorption spectroscopy showed progressively faster reactivity towards nucleophilic iodide with more polarizable halogen substituents: Dye-F < Dye-Cl < Dye-Br < Dye-I. Given that all other structural and electronic properties for the series are held at parity, with the exception of an increasingly larger electropositive σ-hole on the heavier halogens, the differences in dye regeneration kinetics for Dye-Cl, Dye-Br, and Dye-I are ascribed to the extent of halogen bonding with the nucleophilic solution species.

Translating evidence into population health improvement: strategies and barriers.

Among the challenges facing research translation-the effort to move evidence into policy and practice-is that key questions chosen by investigators and funders may not always align with the information priorities of decision makers, nor are the findings always presented in a form that is useful for or relevant to the decisions at hand. This disconnect is a problem particularly for population health, where the change agents who can make the biggest difference in improving health behaviors and social and environmental conditions are generally nonscientists outside of the health professions. To persuade an audience that does not read scientific journals, strong science may not be enough to elicit change. Achieving influence in population health often requires four ingredients for success: research that is responsive to user needs, an understanding of the decision-making environment, effective stakeholder engagement, and strategic communication. This article reviews the principles and provides examples from a national and local initiative.

Assessing Interpersonal Subtypes in Depression.

The context-free diagnoses outlined by the Diagnostic and Statistical Manual of Mental Disorders might not provide enough information to represent the heterogeneity observed in depressed patients. Interpersonal factors have been linked to depression in a mutually influencing pathoplastic relationship where certain problems, like submissiveness, are related to symptom chronicity. This study evaluated interpersonal pathoplasticity in a range of depressive presentations. We examined archival data collected from 407 participants who met criteria for major depressive disorder (MDD), dysthymic disorder (DD), or subthreshold depression (sD). Latent profile analysis (LPA) identified 5 interpersonal subtypes (vindictive, intrusive, socially avoidant, exploitable, and cold). Apart from gender, the subtypes did not differ significantly on demographic characteristics, psychiatric comorbidity, or self-report depression severity. Socially avoidant participants were more likely to meet criteria for a clinical depression diagnosis (MDD or DD), whereas vindictive participants were more likely to have sD. Our results indicate that interpersonal problems could account for heterogeneity observed in depression.

Moral injury as an inclusive mental health framework for addressing climate change distress and promoting justice-oriented care.

The unequal exposure to clinical conditions and other psychological responses associated with climate change and ecological degradation is due to resource access, geographical location, and other systemic factors. Ecological distress is further determined by values, beliefs, identity presentations, and group affiliations. Current models, such as climate anxiety, have made helpful distinctions between impairment and cognitive-emotional processes but obscure underlying ethical dilemmas and fundamental inequalities, restricting our understanding of accountability and the distress emerging from intergroup dynamics. In this Viewpoint, we argue that the concept of moral injury is essential because it foregrounds social position and ethics. It identifies spectrums of both agency and responsibility (guilt, shame, and anger) and powerlessness (depression, grief, and betrayal). The moral injury framework thus goes beyond an acontextual definition of wellbeing to identify how differential access to political power influences the diversity of psychological responses and conditions related to climate change and ecological degradation. A moral injury lens supports clinicians and policy makers to transform despair and stasis into care and action by delineating both the psychological and structural elements that determine the possibilities (and limits) of individual and community agency.

Immune dysregulation, polyendocrinopathy and enteropathy, X-linked (IPEX) syndrome due to a mutation in FOXP3, modified by a pathogenic variant in SON (SON DNA-binding protein).

Immune dysregulation, polyendocrinopathy, enteropathy, and X-linked, known as IPEX syndrome, is a rare heterogeneous condition. Zhu-Tokita-Takenouchi-Kim Syndrome (ZTTK) is an autosomal dominant condition arising from a mutation in the SON gene, which is involved in mRNA splicing. A case showing interactions of mutations in these two genes is described in which both conditions become non-typical.

An examination of the clinical utility of phonemic fluency in healthy adults and adults with mild cognitive impairment.

The Controlled Oral Word Association Test (COWAT) is a widely utilized measure of phonemic fluency. However, two issues remain: (1) whether demographic, cognitive variables, or version of test administered predict performance; (2) if the test is predictive of Mild Cognitive Impairment (MCI). Recent studies report that item-level analyses such as lexical frequency may be more sensitive to early cognitive change. The purpose of this study was to examine the clinical utility of the COWAT, considering both total correct words and the lexical frequency. Sixty-seven healthy adults and thirty-seven adults with MCI completed neuropsychological testing. Mann-Whitney U tests were used to determine if there was a difference in COWAT performance between groups. Elastic net regression models were used to assess whether variance in total scores/lexical frequencies can be predicted by demographics, test version, or diagnosis; which cognitive tests explained the variance in performance; and how total scores and lexical frequencies compared with other cognitive tests in predicting diagnosis. Overall, individuals with MCI produced fewer and higher frequency words. The variance in total correct words or lexical frequency was not explained by demographics, test version, or diagnosis. Total correct words was a more important predictor of diagnosis than lexical frequency.

Dysregulation of mitochondrial and proteolysosomal genes in Parkinson's disease myeloid cells.

An increasing number of identified Parkinson's disease (PD) risk loci contain genes highly expressed in innate immune cells, yet their role in pathology is not understood. We hypothesize that PD susceptibility genes modulate disease risk by influencing gene expression within immune cells. To address this, we have generated transcriptomic profiles of monocytes from 230 individuals with sporadic PD and healthy subjects. We observed a dysregulation of mitochondrial and proteasomal pathways. We also generated transcriptomic profiles of primary microglia from brains of 55 subjects and observed discordant transcriptomic signatures of mitochondrial genes in PD monocytes and microglia. We further identified 17 PD susceptibility genes whose expression, relative to each risk allele, is altered in monocytes. These findings reveal widespread transcriptomic alterations in PD monocytes, with some being distinct from microglia, and facilitate efforts to understand the roles of myeloid cells in PD as well as the development of biomarkers.

Changes in the lipid fraction of king mackerel pan fried in coconut oil and cooked in coconut milk.

The influence of cooking on the nutritional value of king mackerel when cooked in coconut milk or pan fried in coconut oil was verified from the alterations in the fatty acid content; formation of cholesterol oxides and the nutritional quality indices of the lipids. Cooking in coconut milk caused an 11.6% reduction in the protein content and 28.3% reduction in the ash content. The lipid content increased after cooking (253%) and frying (198%) causing an increase in the caloric value. The total saturated and monounsaturated fatty acids of the cooked king mackerel increased 462% and 248%, respectively, whereas these increases were 418% and 130%, respectively, for the fried king mackerel. There were reductions of 21% and 38% in the total EPA+DHA of the pan fried and cooked samples, respectively, as compared to the fresh king mackerel. The heat treatment did not cause alterations in cholesterol content.

Spectroscopic detection of halogen bonding resolves dye regeneration in the dye-sensitized solar cell.

The interactions between a surface-adsorbed dye and a soluble redox-active electrolyte species in the dye-sensitized solar cell has a significant impact on the rate of regeneration of photo-oxidized dye molecules and open-circuit voltage of the device. Dyes must therefore be designed to encourage these interfacial interactions, but experimentally resolving how such weak interactions affect electron transfer is challenging. Herein, we use X-ray absorption spectroscopy to confirm halogen bonding can exist at the dye-electrolyte interface. Using a known series of triphenylamine-based dyes bearing halogen substituents geometrically positioned for reaction with halides in solution, halogen bonding was detected only in cases where brominated and iodinated dyes were photo-oxidized. This result implies that weak intermolecular interactions between photo-oxidized dyes and the electrolyte can impact device photovoltages. This result was unexpected considering the low concentration of oxidized dyes (less than 1 in 100,000) under full solar illumination.

Translating Research into Action: A Framework for Research That Supports Advances In Population Health.

The research community faces a growing need to deliver useful data and actionable evidence to support health systems and policymakers on ways to optimize the health of populations. Translating science into policy has not been the traditional strong suit of investigators, who typically view a journal publication as the endpoint of their work. They are less accustomed to seeing their data as an input to the work of communities and policymakers to improve population health. This article offers four suggestions as potential solutions: (1) shaping a research portfolio around user needs, (2) understanding the decision-making environment, (3) engaging stakeholders, and (4) strategic communication.

Efeito do beneficiamento sobre o valor nutricional do peixe mandim Arius spixii / Effect of processing on nutritional value of the mandim fish Arius spixii

Com o objetivo de avaliar o efeito do beneficiamento sobre o valor nutricional do peixe mandim (Arius spixii) comercializado em Maceió-AL, determinaram-se nas suas formas in natura e beneficiada (salgado-seco) a composição centesimal, valor calórico,cloretos, perfil de ácidos graxos e colesterol, sendo também analisada a ocorrência de óxidos de colesterol. Os resultados obtidos para o mandim in natura e beneficiado, respectivamente, de umidade (70,13% e 40,31%), proteínas (51,73% e 38,07%, base seca), carboidratos (4,67% e 2,24%, base seca), calorias (486 kcal/100ge 367 kcal/100g, base seca), ácidos graxos (poliinsaturados 14,54% e 15,49%, ômega-3 8,51% e 6,51%), colesterol (82,66 mg/100g e 61,30 mg/100g) e óxidos (7-cetocolesterol 8,31 μg/g e 17,90 μg/g), permitiram concluir que o beneficiamento favoreceu alterações significativas no valor nutricional do mandim.

In an attempt to analyze how processing enhances the nutritional value of the mandim fish (Arius spixii) marketedin Maceió-AL, Brazil, the following nutritional components were determined in fresh and processed (salted-dried) fish: centesimal composition, calorie count, chloride, fatty acid and cholesterol profile. The presence of cholesterol oxides was also investigated. Respective results for fresh and processed mandim fish were: moisture (70.13% and 40.31%), proteins (51.73% and 38.07%, dried),carbohyrdrates (4.67% and 2.24%, dried), calories (486 kcal/100g and 367 kcal/100g, dried), fatty acids(polyunsaturared 14,54% and 15,49%, ômega-3 8,51% and 6,51%), cholesterol (82.66 mg/100g and 61.30 mg/100g) and oxides (7-ketocholesterol 8.31 μg/g and 17.90 μg/g). These figures clearly showed that processing led to significant change in the nutritional value of the mandim fish.