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1.
Dev Psychopathol ; : 1-11, 2023 Nov 06.
Artigo em Inglês | MEDLINE | ID: mdl-37929632

RESUMO

Parental depression is a risk factor for children's cognitive and psychological development. Literature has found reciprocal relations between parental depression and child psychopathology and effects of parental depression on children's cognition. The present study is the first to examine reciprocity among parental depression and child cognition, and pathways to child psychopathology. Structural equation models were conducted using data from the Early Head Start Research and Evaluation Project, a nationally representative sample of 3,001 economically marginalized families. Measures were collected in four waves from 14 months to 10-11 years. Reciprocal associations emerged between maternal and paternal depression at from 14 months to 5 years. Reciprocal parental depression was associated with greater psychopathology at age 10-11. Maternal depression predicted poorer child cognition, which indirectly predicted increased depression in mothers of children aged 3-5 through paternal depression, and in fathers at age 3, through earlier paternal depression. This study was unable to parse within- and between-person effects. Additionally, data for paternal depression was limited to ages 2 and 3. Findings emphasize the transactional nature of child cognition and child and parent psychopathology, supporting family focused intervention and prevention efforts that target parent psychopathology and child cognition.

2.
J Surg Res ; 279: 540-547, 2022 11.
Artigo em Inglês | MEDLINE | ID: mdl-35921720

RESUMO

INTRODUCTION: Dietary interventions are increasingly being proposed as alternatives to surgery for common gastrointestinal conditions. Integrating aspects of cognitive psychology (e.g., behavioral nudges) into dietary interventions is becoming popular, but evidence is lacking on their effectiveness and unintended effects. We assessed the effects of including nudges in the development of a dietary intervention based on the Mediterranean diet. METHODS: We conducted two-arm randomized surveys of United States adults. After a validated dietary questionnaire, participants received feedback about dietary consistency with a Mediterranean diet with (A) no nudge versus (B) one of several nudges: peer comparison, positive affect induction + peer comparison, or defaults. Participants rated their negative and positive emotions, motivation for dietary change, and interest in recipes. Responses were analyzed using baseline covariate-adjusted regression. RESULTS: Among 1709 participants, 56% were men and the median age was 36 y. Nudges as a class did not significantly affect the extent of negative or positive emotions, motivation, or interest. However, specific nudges had different effects: compared to no nudge, peer comparison blunted negative emotions and increased motivation, although decreased interest in recipes, while defaults increased interest in recipes but reduced motivation. CONCLUSIONS: In this pilot, behavioral nudges as a class of strategies did not improve participants' reactions to dietary feedback nor did they promote negative reactions. However, specific nudges may be better considered separately in their effects. Future testing should explore whether specific nudges including peer comparison and defaults improve dietary intervention effectiveness, especially in people with the specific gastrointestinal conditions of interest.


Assuntos
Dieta , Motivação , Adulto , Retroalimentação , Feminino , Humanos , Masculino , Inquéritos e Questionários
3.
J Emerg Med ; 63(2): 178-191, 2022 08.
Artigo em Inglês | MEDLINE | ID: mdl-36038434

RESUMO

BACKGROUND: Patients with injury may be at high risk of long-term opioid use due to the specific features of injury (e.g., injury severity), as well as patient, treatment, and provider characteristics that may influence their injury-related pain management. OBJECTIVES: Inform prescribing practices and identify high-risk populations through studying chronic prescription opioid use in the trauma population. METHODS: Using the Washington State All-Payer Claims Database (WA-APCD) data, we included adults aged 18-65 years with an incident injury from October 1, 2015-December 31, 2017. We compared patient, injury, treatment, and provider characteristics by whether or not the patients had long-term (≥ 90 days continuous prescription opioid use), or no opioid use after injury. RESULTS: We identified 191,130 patients who met eligibility criteria and were included in our cohort; 5822 met criteria for long-term use. Most had minor injuries, with a median Injury Severity Score = 1, with no difference between groups. Almost all patients with long-term opioid use had filled an opioid prescription in the year prior to their injury (95.3%), vs. 31.3% in the no-use group (p < 0.001). Comorbidities associated with chronic pain, mental health, and substance use conditions were more common in the long-term than the no-use group. CONCLUSION: Across this large cohort of multiple, mostly minor, injury types, long-term opioid use was relatively uncommon, but almost all patients with chronic use post injury had preinjury opioid use. Long-term opioid use after injury may be more closely tied to preinjury chronic pain and pain management than acute care pain management.


Assuntos
Dor Crônica , Transtornos Relacionados ao Uso de Opioides , Adulto , Analgésicos Opioides/efeitos adversos , Dor Crônica/tratamento farmacológico , Dor Crônica/epidemiologia , Dor Crônica/etiologia , Prescrições de Medicamentos , Humanos , Transtornos Relacionados ao Uso de Opioides/epidemiologia , Padrões de Prática Médica , Estudos Retrospectivos , Washington/epidemiologia
4.
J Child Lang ; 47(3): 680-694, 2020 05.
Artigo em Inglês | MEDLINE | ID: mdl-31685053

RESUMO

Children from language minority (LM) environments speak a language at home that differs from that at school, are often from socioeconomically disadvantaged backgrounds, and are at risk for reading impairment. We evaluated the main effects and interaction of language status and phonological memory and awareness on reading disorder in 352 children from socioeconomically disadvantaged backgrounds. A significant phonological memory by language status interaction indicated that phonological memory problems were magnified in predicting reading impairment in children from LM versus English dominant (ED) homes. Among children without reading disorder, language minority status was unrelated to phonological processing.


Assuntos
Fonética , Criança , Linguagem Infantil , Dislexia , Feminino , Humanos , Idioma , Desenvolvimento da Linguagem , Testes de Linguagem , Masculino , Memória , Leitura
5.
Ann Surg Oncol ; 23(Suppl 5): 609-617, 2016 12.
Artigo em Inglês | MEDLINE | ID: mdl-27020585

RESUMO

BACKGROUND: The staging of pancreatic neuroendocrine tumors (PNETs) is continuously evolving. Mitotic count, as measured by hematoxylin and eosin (H&E) or Ki67 labeling index (Ki67LI), is the best predictor of disease biology. However, both of these methods have several limitations. Phosphorylated histone H3 (PHH3), a novel mitotic marker, is potentially more accurate and easier to evaluate. This study aimed to evaluate the prognostic impact of PHH3 on patients with PNETs. METHODS: Clinicopathologic data and paraffin-embedded tissue were evaluated for 100 of the 247 PNET patients whose tumors were resected between 1998 and 2010. Mitotic counts were analyzed on H&E-, Ki67-, and PHH3-stained slides by two independent pathologists. Kaplan-Meier curves, log-rank tests, Cox regression models, and time-dependent receiver operative characteristics (ROC) curves were used to evaluate the prognostic power of these markers. An internal data cross-validation was performed to select the best cutoff. RESULTS: Of the 100 PNET patients resected, 53 were men. The median age of the patients was 59 years (range 19-96 years). The median follow-up period was 68 months (range 3-186 months). The median time for evaluation of an H&E- or PHH3-stained slide was 3 min, relative to 15 min for Ki67. The findings showed H&E, Ki67, and PHH3 all to be excellent predictors of disease-specific survival (DSS). However, PHH3 was superior to H&E and Ki67 in predicting both disease-free survival (DFS) (p = 0.006) and DSS (p = 0.001). Evaluation of the PHH3 mitotic count showed 7 mitoses per 10 high-power fields (HPFs) to be the optimal cutoff for differentiating between low- and high-risk PNET patients. CONCLUSIONS: PHH3 is a better predictor of both DFS and DSS than H&E or Ki67 in PNET. In addition, PHH3 appears to be both easier to interpret and more accurate when compared to current prognostic markers.


Assuntos
Histonas/metabolismo , Índice Mitótico/métodos , Tumores Neuroendócrinos/metabolismo , Neoplasias Pancreáticas/metabolismo , Adulto , Idoso , Idoso de 80 Anos ou mais , Biomarcadores Tumorais/metabolismo , Proliferação de Células , Corantes , Intervalo Livre de Doença , Amarelo de Eosina-(YS) , Feminino , Hematoxilina , Humanos , Estimativa de Kaplan-Meier , Antígeno Ki-67/metabolismo , Masculino , Pessoa de Meia-Idade , Tumores Neuroendócrinos/patologia , Neoplasias Pancreáticas/patologia , Fosforilação , Modelos de Riscos Proporcionais , Curva ROC , Taxa de Sobrevida , Fatores de Tempo , Adulto Jovem
6.
Mol Cell Proteomics ; 11(11): 1220-9, 2012 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-22865920

RESUMO

Class IIa histone deacetylases (HDACs 4/5/7/9) are transcriptional regulators with critical roles in cardiac disease and cancer. HDAC inhibitors are promising anticancer agents, and although they are known to disrupt mitotic progression, the underlying mechanisms of mitotic regulation by HDACs are not fully understood. Here we provide the first identification of histone deacetylases as substrates of Aurora B kinase (AurB). Our study identifies class IIa HDACs as a novel family of AurB targets and provides the first evidence that HDACs are temporally and spatially regulated by phosphorylation during the cell cycle. We define the precise site of AurB-mediated phosphorylation as a conserved serine within the nuclear localization signals of HDAC4, HDAC5, and HDAC9 at Ser265, Ser278, and Ser242, respectively. We establish that AurB interacts with these HDACs in vivo, and that this association increases upon disruption of 14-3-3 binding. We observe colocalization of endogenous, phosphorylated HDACs with AurB at the mitotic midzone in late anaphase and the midbody during cytokinesis, complemented by a reduction in HDAC interactions with components of the nuclear corepressor complex. We propose that AurB-dependent phosphorylation of HDACs induces sequestration within a phosphorylation gradient at the midzone, maintaining separation from re-forming nuclei and contributing to transcriptional control.


Assuntos
Histona Desacetilases/metabolismo , Mitose , Sinais de Localização Nuclear/metabolismo , Proteínas Serina-Treonina Quinases/metabolismo , Sequência de Aminoácidos , Aurora Quinase B , Aurora Quinases , Linhagem Celular , Cromatografia de Afinidade , Sequência Conservada , Citocinese , Histona Desacetilases/química , Histona Desacetilases/isolamento & purificação , Humanos , Modelos Biológicos , Dados de Sequência Molecular , Sinais de Localização Nuclear/química , Correpressor 1 de Receptor Nuclear/metabolismo , Fosforilação , Fosfosserina/metabolismo , Ligação Proteica , Transporte Proteico , Especificidade por Substrato
7.
Med Phys ; 51(3): 2263-2276, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37878762

RESUMO

BACKGROUND: Diffusing alpha-emitters Radiation Therapy ("DaRT") is a promising new modality for the treatment of solid tumors. Interstitial sources containing 224 Ra are inserted into the tumor, producing alpha particles via the decay of 224 Ra and its daughters. The alpha particles are able to produce a "kill region" of several mm due to the diffusion of the alpha-emitting atoms. The Diffusion-Leakage (D-L) model has been proposed to describe the movement of the alpha-emitters used in DaRT in tumor tissue. PURPOSE: To date, estimating the dose delivered under the D-L model has been accomplished with numerical solutions based on finite difference methods, namely DART1D and DART2D, as well as with asymptotic expressions for the long time limit. The aim of this work is to develop a flexible method of finite elements for solving the D-L model and to validate prior solutions of the D-L model. METHODS: We develop a two-dimensional finite element solution to the D-L model implemented using the FEniCS software library. Our approach solves the variational formulation of the D-L equations on an unstructured mesh of triangular Lagrangian elements. We calculate the local dose in the mid- and axial planes of the source and validate our results against the one- and two-dimensional solutions obtained using the previously proposed numerical scheme, DART1D and DART2D. We use our model to estimate the change in dose in the source midplane as a function of the physical parameters used in the D-L model. RESULTS: The local dose at the end of a 30 day treatment period estimated by our numerical method differs from DART1D and DART2D by less than 1% in the source midplane and less than 3% along the source axis over clinically relevant distances, with the largest discrepancies in high gradient areas where the Finite Element Method (FEM) mesh has a higher element density. We find that within current experimentally estimated ranges for D-L model parameters, the dose in the source midplane at a distance of 2 mm can vary by over a factor of 3. CONCLUSIONS: The 2D finite element model reproduces the calculated dose obtained with DART1D and DART2D under the assumptions D-L model. The variation in predicted dose within current experimental ranges for model parameters suggests the necessity of further studies to better determine their statistical distributions. Finally, the FEM model can be used to calculate dose from DaRT in a variety of realistic 2D geometries beyond the D-L model.


Assuntos
Braquiterapia , Neoplasias , Humanos , Análise de Elementos Finitos , Partículas alfa/uso terapêutico , Software , Braquiterapia/métodos
8.
mBio ; 15(3): e0291823, 2024 Mar 13.
Artigo em Inglês | MEDLINE | ID: mdl-38380943

RESUMO

Archaea belonging to the DPANN (Diapherotrites, Parvarchaeota, Aenigmarchaeota, Nanoarchaeota, and Nanohaloarchaeota) superphylum have been found in an expanding number of environments and perform a variety of biogeochemical roles, including contributing to carbon, sulfur, and nitrogen cycling. Generally characterized by ultrasmall cell sizes and reduced genomes, DPANN archaea may form mutualistic, commensal, or parasitic interactions with various archaeal and bacterial hosts, influencing the ecology and functioning of microbial communities. While DPANN archaea reportedly comprise a sizeable fraction of the archaeal community within marine oxygen-deficient zone (ODZ) water columns, little is known about their metabolic capabilities in these ecosystems. We report 33 novel metagenome-assembled genomes (MAGs) belonging to the DPANN phyla Nanoarchaeota, Pacearchaeota, Woesearchaeota, Undinarchaeota, Iainarchaeota, and SpSt-1190 from pelagic ODZs in the Eastern Tropical North Pacific and the Arabian Sea. We find these archaea to be permanent, stable residents of all three major ODZs only within anoxic depths, comprising up to 1% of the total microbial community and up to 25%-50% of archaea as estimated from read mapping to MAGs. ODZ DPANN appear to be capable of diverse metabolic functions, including fermentation, organic carbon scavenging, and the cycling of sulfur, hydrogen, and methane. Within a majority of ODZ DPANN, we identify a gene homologous to nitrous oxide reductase. Modeling analyses indicate the feasibility of a nitrous oxide reduction metabolism for host-attached symbionts, and the small genome sizes and reduced metabolic capabilities of most DPANN MAGs suggest host-associated lifestyles within ODZs. IMPORTANCE: Archaea from the DPANN (Diapherotrites, Parvarchaeota, Aenigmarchaeota, Nanoarchaeota, and Nanohaloarchaeota) superphylum have diverse metabolic capabilities and participate in multiple biogeochemical cycles. While metagenomics and enrichments have revealed that many DPANN are characterized by ultrasmall genomes, few biosynthetic genes, and episymbiotic lifestyles, much remains unknown about their biology. We report 33 new DPANN metagenome-assembled genomes originating from the three global marine oxygen-deficient zones (ODZs), the first from these regions. We survey DPANN abundance and distribution within the ODZ water column, investigate their biosynthetic capabilities, and report potential roles in the cycling of organic carbon, methane, and nitrogen. We test the hypothesis that nitrous oxide reductases found within several ODZ DPANN genomes may enable ultrasmall episymbionts to serve as nitrous oxide consumers when attached to a host nitrous oxide producer. Our results indicate DPANN archaea as ubiquitous residents within the anoxic core of ODZs with the potential to produce or consume key compounds.


Assuntos
Archaea , Microbiota , Archaea/genética , Óxido Nitroso/metabolismo , Filogenia , Metagenoma , Metano/metabolismo , Oxigênio/metabolismo , Carbono/metabolismo , Nitrogênio/metabolismo , Enxofre/metabolismo , Água/metabolismo
9.
ISME Commun ; 4(1): ycae060, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38770059

RESUMO

Anammox bacteria inhabiting oxygen-deficient zones (ODZs) are a major functional group mediating fixed nitrogen loss in the global ocean. However, many basic questions regarding the diversity, broad metabolisms, origin, and adaptive mechanisms of ODZ anammox bacteria remain unaddressed. Here we report two novel metagenome-assembled genomes of anammox bacteria affiliated with the Scalindua genus, which represent most, if not all, of the anammox bacteria in the global ODZs. Metagenomic read-recruiting and comparison with historical data show that they are ubiquitously present in all three major ODZs. Beyond the core anammox metabolism, both organisms contain cyanase, and the more dominant one encodes a urease, indicating most ODZ anammox bacteria can utilize cyanate and urea in addition to ammonium. Molecular clock analysis suggests that the evolutionary radiation of these bacteria into ODZs occurred no earlier than 310 million years ago, ~1 billion years after the emergence of the earliest modern-type ODZs. Different strains of the ODZ Scalindua species are also found in benthic sediments, and the first ODZ Scalindua is likely derived from the benthos. Compared to benthic strains of the same clade, ODZ Scalindua uniquely encodes genes for urea utilization but has lost genes related to growth arrest, flagellum synthesis, and chemotaxis, presumably for adaptation to thrive in the global ODZ waters. Our findings expand the known metabolisms and evolutionary history of the bacteria controlling the global nitrogen budget.

10.
Kidney Int Rep ; 9(5): 1244-1253, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38707795

RESUMO

Introduction: Even with effective vaccines, patients with CKD have a higher risk of hospitalization and death subsequent to COVID-19 infection than those without CKD. Molnupiravir and nirmatrelvir-ritonavir have been approved for emergency use, but their effectiveness for the CKD population is still unknown. This study was conducted to determine the effectiveness of these drugs in reducing mortality and severe COVID-19 in the CKD population. Methods: This was a target trial emulation study using electronic health databases in Hong Kong. Patients with CKD aged 18 years or older who were hospitalized with COVID-19 were included. The per-protocol average treatment effect among COVID-19 oral antiviral initiators, including all-cause mortality, intensive care unit (ICU) admission, and ventilatory support within 28 days, were compared to noninitiators. Results: Antivirals have been found to lower the risk of all-cause mortality, with Molnupiravir at a hazard ratio (HR) of 0.85 (95% confidence interval [CI], 0.77 to 0.95] and nirmatrelvir-ritonavir at an HR of 0.78 [95% CI, 0.60 to 1.00]. However, they do not significantly reduce the risk of ICU admission (molnupiravir: HR, 0.88 [95% CI, 0.59 to 1.30]; nirmatrelvir-ritonavir: HR, 0.86 [95% CI, 0.56 to 1.32]) or ventilatory support (molnupiravir: HR, 1.00 [95% CI, 0.76 to 1.33]; nirmatrelvir-ritonavir: HR, 1.01 [95% CI, 0.74 to 1.37]). There was a greater risk reduction in males and those with higher Charlson Comorbidity Index (CCI). The nirmatrelvir-ritonavir trial also showed reduced risk for those who had antiviral treatment and received 3 or more vaccine doses. Conclusion: Both molnupiravir and nirmatrelvir-ritonavir reduced mortality rates for hospitalized COVID-19 patients with CKD.

11.
Arch Suicide Res ; 27(1): 156-163, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-34520697

RESUMO

Cyberbullying is a well-established risk factor for suicidal thoughts and behavior in adolescents. However, research examining the differential influence of different forms of cyberbullying on suicidality is limited. This exploratory study investigated the association between cyberbullying and self-injurious thoughts and behaviors separately. Specifically, the study sought to examine how being the subject of online rumors, illicit photographs, and threatening messages related to nonsuicidal self-injury (NSSI), suicidal ideation (SI), and suicide attempt (SA) history in an adolescent psychiatric sample (n = 64). The findings demonstrated that endorsement of any form of cyberbullying was significantly associated with NSSI. Further, victims of online rumors were over fifteen times more likely to engage in NSSI, and all participants who reported involvement in illicit photographs endorsed NSSI. Additionally, participants who endorsed involvement in an online rumor were nearly seventeen times more likely to report SA history. The forms of cyberbullying assessed were not significantly associated with SI.


Assuntos
Cyberbullying , Comportamento Autodestrutivo , Humanos , Adolescente , Ideação Suicida , Comportamento Autodestrutivo/psicologia , Tentativa de Suicídio/psicologia , Fatores de Risco
12.
Commun Earth Environ ; 4(1): 275, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38665198

RESUMO

Sinking marine particles drive the biological pump that naturally sequesters carbon from the atmosphere. Despite their small size, the compartmentalized nature of particles promotes intense localized metabolic activity by their bacterial colonizers. Yet the mechanisms promoting the onset of denitrification, a metabolism that arises once oxygen is limiting, remain to be established. Here we show experimentally that slow sinking aggregates composed of marine diatoms-important primary producers for global carbon export-support active denitrification even among bulk oxygenated water typically thought to exclude anaerobic metabolisms. Denitrification occurs at anoxic microsites distributed throughout a particle and within microns of a particle's boundary, and fluorescence-reporting bacteria show nitrite can be released into the water column due to segregated dissimilatory reduction of nitrate and nitrite. Examining intact and broken diatoms as organic sources, we show slowly leaking cells promote more bacterial growth, allow particles to have lower oxygen, and generally support greater denitrification.

13.
PNAS Nexus ; 2(2): pgac311, 2023 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-36845354

RESUMO

Particulate organic carbon settling through the marine water column is a key process that regulates the global climate by sequestering atmospheric carbon. The initial colonization of marine particles by heterotrophic bacteria represents the first step in recycling this carbon back to inorganic constituents-setting the magnitude of vertical carbon transport to the abyss. Here, we demonstrate experimentally using millifluidic devices that, although bacterial motility is essential for effective colonization of a particle leaking organic nutrients into the water column, chemotaxis specifically benefits at intermediate and higher settling velocities to navigate the particle boundary layer during the brief window of opportunity provided by a passing particle. We develop an individual-based model that simulates the encounter and attachment of bacterial cells with leaking marine particles to systematically evaluate the role of different parameters associated with bacterial run-and-tumble motility. We further use this model to explore the role of particle microstructure on the colonization efficiency of bacteria with different motility traits. We find that the porous microstructure facilitates additional colonization by chemotactic and motile bacteria, and fundamentally alters the way nonmotile cells interact with particles due to streamlines intersecting with the particle surface.

14.
ISME Commun ; 3(1): 76, 2023 Jul 20.
Artigo em Inglês | MEDLINE | ID: mdl-37474642

RESUMO

Oxygen deficient zones (ODZs) account for about 30% of total oceanic fixed nitrogen loss via processes including denitrification, a microbially mediated pathway proceeding stepwise from NO3- to N2. This process may be performed entirely by complete denitrifiers capable of all four enzymatic steps, but many organisms possess only partial denitrification pathways, either producing or consuming key intermediates such as the greenhouse gas N2O. Metagenomics and marker gene surveys have revealed a diversity of denitrification genes within ODZs, but whether these genes co-occur within complete or partial denitrifiers and the identities of denitrifying taxa remain open questions. We assemble genomes from metagenomes spanning the ETNP and Arabian Sea, and map these metagenome-assembled genomes (MAGs) to 56 metagenomes from all three major ODZs to reveal the predominance of partial denitrifiers, particularly single-step denitrifiers. We find niche differentiation among nitrogen-cycling organisms, with communities performing each nitrogen transformation distinct in taxonomic identity and motility traits. Our collection of 962 MAGs presents the largest collection of pelagic ODZ microorganisms and reveals a clearer picture of the nitrogen cycling community within this environment.

15.
bioRxiv ; 2023 Oct 30.
Artigo em Inglês | MEDLINE | ID: mdl-37961710

RESUMO

Archaea belonging to the DPANN superphylum have been found within an expanding number of environments and perform a variety of biogeochemical roles, including contributing to carbon, sulfur, and nitrogen cycling. Generally characterized by ultrasmall cell sizes and reduced genomes, DPANN archaea may form mutualistic, commensal, or parasitic interactions with various archaeal and bacterial hosts, influencing the ecology and functioning of microbial communities. While DPANN archaea reportedly comprise 15-26% of the archaeal community within marine oxygen deficient zone (ODZ) water columns, little is known about their metabolic capabilities in these ecosystems. We report 33 novel metagenome-assembled genomes belonging to DPANN phyla Nanoarchaeota, Pacearchaeota, Woesarchaeota, Undinarchaeota, Iainarchaeota, and SpSt-1190 from pelagic ODZs in the Eastern Tropical North Pacific and Arabian Sea. We find these archaea to be permanent, stable residents of all 3 major ODZs only within anoxic depths, comprising up to 1% of the total microbial community and up to 25-50% of archaea. ODZ DPANN appear capable of diverse metabolic functions, including fermentation, organic carbon scavenging, and the cycling of sulfur, hydrogen, and methane. Within a majority of ODZ DPANN, we identify a gene homologous to nitrous oxide reductase. Modeling analyses indicate the feasibility of a nitrous oxide reduction metabolism for host-attached symbionts, and the small genome sizes and reduced metabolic capabilities of most DPANN MAGs suggest host-associated lifestyles within ODZs.

16.
Arch Suicide Res ; 27(2): 246-260, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-34632952

RESUMO

OBJECTIVE: Evidence-based suicide prevention interventions directed to those seeking psychiatric crisis services for suicidality in the emergency department (ED) can reduce death by suicide and related suffering. Best practice guidelines for the care of suicidal patients in the ED exist but are not accompanied by fidelity tools for use in determining whether the interventions were applied, particularly when more than one intervention is delivered concurrently. We sought to develop a universal, treatment-agnostic Suicide Care Fidelity Checklist comprised of Key Performance Elements (KPE) across the recommended suicide-specific ED interventions. METHOD: A comprehensive review of published care standards was first conducted to determine suicide-specific ED best practice treatment domains and KPEs. Subject matter experts (SMEs) were identified for each domain. Using the Delphi Consensus method, SMEs iteratively revised and refined the KPEs within their domain until achieving KPE item consensus. RESULTS: A total of three iterations was required to obtain consensus in five of six domains: comprehensive suicide assessment, lethal means counseling, suicide crisis planning, behavioral skills training, and psychoeducation about suicidality. Consensus was not fully attained for the domain involving engagement with people with lived experience. CONCLUSIONS: We successfully identified six intervention domains and 74 KPEs across domains (60 deemed essential, and 14 deemed optional), with full consensus reached for 70 KPEs. While replication of the initial findings is required, the Suicide Care Fidelity Checklist can be used as a fidelity checklist to verify delivery of suicide-specific ED interventions.HIGHLIGHTSApplied Delphi Consensus method with suicide-specific subject matter experts.Generated a treatment-agnostic, universal set of suicide prevention KPEs for EDs.Expert-derived KPEs help real-world settings to assess suicide care fidelity.


Assuntos
Suicídio , Humanos , Técnica Delphi , Suicídio/psicologia , Prevenção do Suicídio , Ideação Suicida , Serviço Hospitalar de Emergência
17.
ISME J ; 17(8): 1167-1183, 2023 08.
Artigo em Inglês | MEDLINE | ID: mdl-37173383

RESUMO

Microbial interactions govern marine biogeochemistry. These interactions are generally considered to rely on exchange of organic molecules. Here we report on a novel inorganic route of microbial communication, showing that algal-bacterial interactions between Phaeobacter inhibens bacteria and Gephyrocapsa huxleyi algae are mediated through inorganic nitrogen exchange. Under oxygen-rich conditions, aerobic bacteria reduce algal-secreted nitrite to nitric oxide (NO) through denitrification, a well-studied anaerobic respiratory mechanism. The bacterial NO is involved in triggering a cascade in algae akin to programmed cell death. During death, algae further generate NO, thereby propagating the signal in the algal population. Eventually, the algal population collapses, similar to the sudden demise of oceanic algal blooms. Our study suggests that the exchange of inorganic nitrogen species in oxygenated environments is a potentially significant route of microbial communication within and across kingdoms.


Assuntos
Bactérias Aeróbias , Óxido Nítrico , Bactérias Aeróbias/metabolismo , Desnitrificação , Bactérias/metabolismo , Nitrogênio/metabolismo
18.
Psychotherapy (Chic) ; 59(2): 143-149, 2022 06.
Artigo em Inglês | MEDLINE | ID: mdl-34410761

RESUMO

The Collaborative Assessment and Management of Suicidality (CAMS) provides clinicians with an evidence-based suicide-focused therapeutic framework to help patients understand and manage suicidal thoughts and behaviors. A key component in CAMS suicide-focused treatment planning is the development and use of the CAMS Stabilization Plan (CSP). The CSP is used to ensure between-session safety and stability by helping patients learn to cope differently, enabling clinicians to care for suicidal patients on an outpatient basis, and thereby rendering suicidal-oriented coping obsolete. While implementing and maintaining the CSP, clinicians work to identify, target, and treat patient-identified suicidal drivers aimed at lowering the patient's suicide risk. The CSP employs a collaborative, flexible, and problem-focused approach creating a unique dynamic between clinician and patient as they work together to address the patient's suicidal struggle. CAMS allows clinicians to be flexible in their approach to treating suicidal behavior, utilizing techniques and tools they know, while providing them with a unique framework to engage their suicidal patients. Additionally, there is an overt and ongoing emphasis on encouraging patients to cultivate purpose and meaning in their lives with plans, goals, and hope for the future-ultimately leading patients to discover a life worth living, which is the final focus in CAMS-guided care. (PsycInfo Database Record (c) 2022 APA, all rights reserved).


Assuntos
Ideação Suicida , Prevenção do Suicídio , Adaptação Psicológica , Humanos , Medição de Risco/métodos
19.
Healthc (Amst) ; 10(2): 100629, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35688014

RESUMO

BACKGROUND: Judicious opioid prescribing and patient counseling, including in the postoperative context, are important efforts to address the U.S. opioid crisis. In discussions with patients and loved ones, there is commonly an emphasis on addiction risk. From a behavioral science standpoint, presenting addiction risk information represents a fear appeal. Clinicians may also seek to build trust and confidence by presenting balanced views of benefits and risks. However, little is known about if and how addiction risk information evokes negative emotions, affects perceptions of quality, and influences perspectives on judicious opioid prescribing. METHODS: We conducted a four-arm, randomized survey of U.S. adults involving a vignette about post-appendectomy pain management for a friend, including the quantity of opioids commonly prescribed. Participants were given either no additional information (control), addiction risk information, addiction plus health risk information, or addiction plus death risk information. We compared evoked affect, agreement with a reduced opioid prescription compared to common practice, and perceptions of quality. RESULTS: Among 1,546 participants (56% men, mean age 39), 78% agreed with reducing the quantity of opioids prescribed, relative to common practices. Compared to the control, providing addiction risk information did not impact the degree of evoked negative emotions or the likelihood of agreement with reduced opioid prescriptions. Providing opioid risk information increased the likelihood of high surgeon quality ratings. CONCLUSIONS: Among a sample of U.S. adults, presenting addiction risk did not effectively appeal to fear, nor increase agreement with judicious opioid prescribing. Alternative communication strategies may be needed for those purposes.


Assuntos
Analgésicos Opioides , Transtornos Relacionados ao Uso de Opioides , Adulto , Analgésicos Opioides/efeitos adversos , Feminino , Humanos , Masculino , Manejo da Dor , Padrões de Prática Médica , Inquéritos e Questionários
20.
Nat Commun ; 13(1): 2271, 2022 04 28.
Artigo em Inglês | MEDLINE | ID: mdl-35484117

RESUMO

Controlled transport of biomolecules across lipid bilayer membranes is of profound significance in biological processes. In cells, cargo exchange is mediated by dedicated channels that respond to triggers, undergo a nanomechanical change to reversibly open, and thus regulate cargo flux. Replicating these processes with simple yet programmable chemical means is of fundamental scientific interest. Artificial systems that go beyond nature's remit in transport control and cargo are also of considerable interest for biotechnological applications but challenging to build. Here, we describe a synthetic channel that allows precisely timed, stimulus-controlled transport of folded and functional proteins across bilayer membranes. The channel is made via DNA nanotechnology design principles and features a 416 nm2 opening cross-section and a nanomechanical lid which can be controllably closed and re-opened via a lock-and-key mechanism. We envision that the functional DNA device may be used in highly sensitive biosensing, drug delivery of proteins, and the creation of artificial cell networks.


Assuntos
DNA , Canais Iônicos , DNA/metabolismo , Canais Iônicos/química , Canais Iônicos/genética , Bicamadas Lipídicas/química , Nanotecnologia
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