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1.
Artigo em Inglês | MEDLINE | ID: mdl-39013751

RESUMO

OBJECTIVE: This study compares demographic, clinical characteristics, and outcomes in older adults on long-acting injectable antipsychotics (LAI-AP) vs. oral antipsychotics (PO-AP). DESIGN: This observational study with a retrospective cohort utilized the electronic medical record's search engine to review charts of geriatric patients on LAI-AP for a two-year period. A convenience sample on PO-AP formed the comparison group. LAI-AP patients were subcategorized into discontinuation and continuation groups. SETTING: Conducted at an urban, psychiatric outpatient clinic, using charts from October 2020 to 2022. PARTICIPANTS: Patients at least 60 years-old with psychotic or mood disorders on antipsychotics for at least 3-months during the study period. MEASUREMENTS: Demographic and clinical variables, including diagnosis, medication type, side effects, medical comorbidities, neurocognitive status, and secondary medications, were collected for both PO-AP and LAI-AP groups. Outcome variables included missed appointments, psychiatric and medical hospitalizations, and emergency room visits. Correlates of discontinuation of LAI-AP were also assessed. RESULTS: LAI-AP had a higher proportion than PO-AP of primary psychotic disorders (87.8% vs. 64.3%). During the study, PO-AP had higher rates of missed appointments (median 18% vs. 13% for LAI-AP) and psychiatric admissions (mean 0.019/month vs. 0.006/month for LAI-AP;); Female sex was a risk factor for discontinuation of LAI-AP (86.7% of discontinuation group vs. 55.2% of continuation group). CONCLUSIONS: The LAI-AP group showed reduced hospitalizations, better treatment engagement, and comparable tolerability to PO-AP. Preliminary data suggests gender may influence LAI-AP discontinuation rates. This study adds to the sparse literature investigating the efficacy and tolerability of LAI-AP in geriatric patients.

2.
Environ Sci Technol ; 58(20): 8792-8802, 2024 May 21.
Artigo em Inglês | MEDLINE | ID: mdl-38719742

RESUMO

Per- and polyfluoroalkyl substances (PFASs) from aqueous film forming foams (AFFFs) can hinder bioremediation of co-contaminants such as trichloroethene (TCE) and benzene, toluene, ethylbenzene, and xylene (BTEX). Anaerobic dechlorination can require bioaugmentation of Dehalococcoides, and for BTEX, oxygen is often sparged to stimulate in situ aerobic biodegradation. We tested PFAS inhibition to TCE and BTEX bioremediation by exposing an anaerobic TCE-dechlorinating coculture, an aerobic BTEX-degrading enrichment culture, and an anaerobic toluene-degrading enrichment culture to n-dimethyl perfluorohexane sulfonamido amine (AmPr-FHxSA), perfluorohexane sulfonamide (FHxSA), perfluorohexanesulfonic acid (PFHxS), or nonfluorinated surfactant sodium dodecyl sulfate (SDS). The anaerobic TCE-dechlorinating coculture was resistant to individual PFAS exposures but was inhibited by >1000× diluted AFFF. FHxSA and AmPr-FHxSA inhibited the aerobic BTEX-degrading enrichment. The anaerobic toluene-degrading enrichment was not inhibited by AFFF or individual PFASs. Increases in amino acids in the anaerobic TCE-dechlorinating coculture compared to the control indicated stress response, whereas the BTEX culture exhibited lower concentrations of all amino acids upon exposure to most surfactants (both fluorinated and nonfluorinated) compared to the control. These data suggest the main mechanisms of microbial toxicity are related to interactions with cell membrane synthesis as well as protein stress signaling.


Assuntos
Biodegradação Ambiental , Hidrocarbonetos Aromáticos , Hidrocarbonetos Aromáticos/metabolismo , Tricloroetileno/metabolismo , Sulfonamidas/metabolismo
3.
Disaster Med Public Health Prep ; 18: e68, 2024 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-38618875

RESUMO

OBJECTIVE: The COVID-19 pandemic has had a globally devastating psychosocial impact. A detailed understanding of the mental health implications of this worldwide crisis is critical for successful mitigation of and preparation for future pandemics. Using a large international sample, we investigated in the present study the relationship between multiple COVID-19 parameters (both disease characteristics and government responses) and the incidence of the suicide crisis syndrome (SCS), an acute negative affect state associated with near-term suicidal behavior. METHODS: Data were collected from 5528 adults across 10 different countries in an anonymous web-based survey between June 2020 and January 2021. RESULTS: Individuals scoring above the SCS cut-off lived in countries with higher peak daily cases and deaths during the first wave of the pandemic. Additionally, the longer participants had been exposed to markers of pandemic severity (eg, lockdowns), the more likely they were to screen positive for the SCS. Findings reflected both country-to-country comparisons and individual variation within the pooled sample. CONCLUSION: Both the pandemic itself and the government interventions utilized to contain the spread appear to be associated with suicide risk. Public policy should include efforts to mitigate the mental health impact of current and future global disasters.


Assuntos
COVID-19 , Suicídio , Adulto , Humanos , COVID-19/epidemiologia , Controle de Doenças Transmissíveis , Pandemias , Governo , Síndrome
5.
R I Med J (2013) ; 107(4): 16-18, 2024 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-38536133

RESUMO

Superficial acral fibromyxoma, also known as digital fibromyxoma, is a benign soft tissue tumor. The acral regions, including the palms, soles, fingers, toes, and nail units, are the commonly affected locations. The subungual region of the great toe is the most common site reported in current literature. The tumor is slowly progressive and benign in nature. Histology commonly reveals a fibromyxoid neoplasm with immunoreactivity to CD34 and CD99 markers.1,2,3 We present the case of a 39-year-old female with a nine-year history of repetitive digital trauma presenting with superficial acral fibromyxoma of the thumb-nail bed. Our case is unique due to the tumor location and the patient's prior long history of trauma to the tumor site.


Assuntos
Fibroma , Polegar , Feminino , Humanos , Adulto , Dedos
6.
Braz J Psychiatry ; 2024 Mar 11.
Artigo em Inglês | MEDLINE | ID: mdl-38467495

RESUMO

AIM: To investigate the factor structure, reliability, and validity of the Brazilian version of the Abbreviated Suicidal Narrative Inventory (SNI-38). METHODS: We used an anonymous online questionnaire of the SNI-38 and self-report measures administered between November 2020 and October 2021 in the Brazilian community. Participants were recruited through social media advertisements. Confirmatory factor analysis was carried out to test the factor structure of the SNI-38. In addition, we examined internal consistency, and convergent validity against stressful life events, the suicide crisis syndrome, suicidal ideation, and suicide attempts. RESULTS: 2660 participants were included. The eight-factor model SNI-38 had a good model fit (χ2[637] = 7,473.98, p < .001, CFI = .99, TLI = .99, RMSEA = .07, SRMR = .06); all items were significantly and positively loaded onto their respective factors (factor loadings ≥ .45). Reliability was good to high in all subscales except goal disengagement. Additionally, all subscales - except goal disengagement - were correlated positively which the suicide crisis syndrome, stressful life events, lifetime/past-month suicidal ideation, and lifetime suicide attempts. CONCLUSIONS: These findings provide preliminary support for the validity of the Brazilian version of the SNI-38, being an appropriate and valid tool for measuring suicidal narrative among Brazilian samples.

7.
J Affect Disord ; 354: 19-25, 2024 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-38423366

RESUMO

BACKGROUND: The global COVID-19 pandemic rapidly and drastically impacted everyday life and relationships. Fear of contracting and spreading the virus brought governments and individuals to adopt strict social distancing measures. These changes have had a significant negative impact on mental health, including a suggested increase in suicidal behaviors. The present study examined the role of interpersonal stress and connectedness in suicidal ideation, deliberate self-harm, suicide attempts, and the suicide crisis syndrome during the COVID-19 pandemic. METHODS: An international sample of 7837 adult participants was recruited across ten participating countries to complete an anonymous online battery of self-report questionnaires. Questionnaires assessed suicide-related outcomes, stressful life events (SLE), and connectedness. Multilevel regression analyses were used to examine the associations between SLE and connectedness on suicide-related outcomes within the past month. RESULTS: Interpersonal SLEs and low connectedness were associated with an increased likelihood of suicide-related outcomes and increased severity of suicide crisis syndrome. Specifically, higher rates of SLEs and lower levels of connectedness were associated with more suicide-related outcomes. LIMITATIONS: The use of a cross-sectional design and snowball sampling method may restrict the ability to establish causal relationships and limit the representativeness of the findings. CONCLUSIONS: Our findings suggest elevated suicide-related outcomes during the COVID-19 pandemic among individuals experiencing multiple interpersonal stressful life events and low connectedness with others. The circumstances of social life during the COVID-19 pandemic highlight the urgency of implementing preventive programs aimed at mitigating potential suicide risks that may arise in the aftermath of public stress situations.


Assuntos
COVID-19 , Adulto , Humanos , Estudos Transversais , Pandemias , Tentativa de Suicídio/psicologia , Ideação Suicida
9.
J Am Pharm Assoc (2003) ; 64(1): 314-320.e3, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-37967721

RESUMO

BACKGROUND: After the Dobbs et al. ruling in June 2022 by the U.S. Supreme Court eliminated the federal right to abortion care, concerns about access to reproductive health have been elevated. Barriers to contraception use consist of knowledge deficits, unfavorable legal rulings, cost and insurance coverage, unnecessary medical practices, and health care inequities. Pharmacists are the most accessible health care providers who are positioned to mitigate these barriers and expand reproductive health access through scope of practice expansion. The American College of Obstetricians and Gynecologists has expressed their support for pharmacists prescribing hormonal contraceptives. As of October 2022, 22 states and jurisdictions have a protocol in place to allow for autonomous prescribing of hormonal contraceptives by pharmacists. OBJECTIVE: The objective of this study was to simultaneously assess pharmacist and clinician perspectives of all ages and sexual identities, on pharmacist-prescribed hormonal contraceptives and barriers faced in accessing contraception. METHODS: The researchers conducted an institutional review board-approved observational study via a cross-sectional survey distributed to licensed pharmacists and clinicians from October 2022 to February 2023. The survey population included those who were 18 years or older, English speaking, and recruited both in person and through e-mail listservs. The survey assessed barriers to contraception access, perspectives toward pharmacist-prescribed hormonal contraception, likelihood of receiving pharmacist-prescribed hormonal contraception, and pharmacist comfort with prescribing hormonal contraceptives. RESULTS: Nearly 38% of respondents reported having ever experienced ≥ 1 barrier in accessing contraception, which were having a time barrier or delay in appointment, a cost or copay barrier, and/or lacking an obstetrician/gynecologist. Eighty-one percent of all respondents agreed or strongly agreed with pharmacist-prescribed hormonal contraception. Sixty-one percent of pharmacists said they are either very or somewhat comfortable prescribing hormonal contraception. Pharmacists' most commonly reported concerns were payment for services, lack of access to patient medical records, and patient safety. CONCLUSIONS: After Dobbs et al., most pharmacists and clinicians in Rhode Island support pharmacist-prescribed hormonal contraceptives and the most frequently reported barriers faced in accessing contraception may be overcome through pharmacist prescribing. The information and data gathered from this study supported legislation for pharmacist prescriptive authority for hormonal contraception in Rhode Island.


Assuntos
Anticoncepcionais , Farmacêuticos , Gravidez , Feminino , Humanos , Estudos Transversais , Prescrições de Medicamentos , Anticoncepção/métodos , Acessibilidade aos Serviços de Saúde
10.
Environ Sci Process Impacts ; 25(12): 2181-2188, 2023 Dec 13.
Artigo em Inglês | MEDLINE | ID: mdl-37990920

RESUMO

Per- and polyfluoroalkyl substances (PFAS) exist in contaminated groundwater, surface water, soil, and sediments from use of aqueous film forming foams (AFFFs). Under these conditions PFAS exhibit unusual behavior due to their surfactant properties, namely, aggregation and surface activity. Environmental factors such as salinity can affect these properties, and complicate efforts to monitor PFAS. The effect of high salinity matrices on the critical micelle concentration (CMC) of a AFFF formulation manufactured by 3M and the surface accumulation of PFAS was assessed with surface tension isotherm measurements and bench-scale experiments quantifying PFAS at the air-water interface. Conditions typical of brackish and saline waters substantially depressed the CMC of the AFFF by over 50% and increased the interfacial mass accumulation of PFAS in the AFFF mixture by up to a factor of 3, relative to values measured in ultrapure water. These results indicate that high salinity matrices increase the aggregation and surface activity of PFAS in mixtures, which are key properties affecting their transport.


Assuntos
Fluorocarbonos , Água Subterrânea , Poluentes Químicos da Água , Adsorção , Salinidade , Poluentes Químicos da Água/análise , Fluorocarbonos/análise
11.
Environ Sci Technol ; 57(38): 14237-14247, 2023 09 26.
Artigo em Inglês | MEDLINE | ID: mdl-37695749

RESUMO

Interactions and nutrient exchanges among members of microbial communities are important for understanding functional relationships in environmental microbiology. We can begin to elucidate the nature of these complex systems by taking a bottom-up approach utilizing simplified, but representative, community members. Here, we assess the effects of a toxic stress event, the addition of arsenite (As(III)), on a syntrophic co-culture containing lactate-fermenting Desulfovibrio vulgaris Hildenborough and solvent-dechlorinating Dehalococcoides mccartyi strain 195. Arsenic and trichloroethene (TCE) are two highly prevalent groundwater contaminants in the United States, and the presence of bioavailable arsenic is of particular concern at remediation sites in which reductive dechlorination has been employed. While we previously showed that low concentrations of arsenite (As(III)) inhibit the keystone TCE-reducing microorganism, D. mccartyi, this study reports the utilization of physiological analysis, transcriptomics, and metabolomics to assess the effects of arsenic on the metabolisms, gene expression, and nutrient exchanges in the described co-culture. It was found that the presence of D. vulgaris ameliorated arsenic stress on D. mccartyi, improving TCE dechlorination under arsenic-contaminated conditions. Nutrient and amino acid export by D. vulgaris may be a stress-ameliorating exchange in this syntrophic co-culture under arsenic stress, based on upregulation of transporters and increased extracellular nutrients like sarcosine and ornithine. These results broaden our knowledge of microbial community interactions and will support the further development and implementation of robust bioremediation strategies at multi-contaminant sites.


Assuntos
Arsênio , Arsenitos , Tricloroetileno , Solventes , Ácido Láctico
12.
Front Microbiol ; 14: 1243410, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37637134

RESUMO

Anaerobic ammonium oxidizing (anammox) bacteria are utilized for high efficiency nitrogen removal from nitrogen-laden sidestreams in wastewater treatment plants. The anammox bacteria form a variety of competitive and mutualistic interactions with heterotrophic bacteria that often employ denitrification or dissimilatory nitrate reduction to ammonium (DNRA) for energy generation. These interactions can be heavily influenced by the influent ratio of ammonium to nitrite, NH4+:NO2-, where deviations from the widely acknowledged stoichiometric ratio (1:1.32) have been demonstrated to have deleterious effects on anammox efficiency. Thus, it is important to understand how variable NH4+:NO2- ratios impact the microbial ecology of anammox reactors. We observed the response of the microbial community in a lab scale anammox membrane bioreactor (MBR) to changes in the influent NH4+:NO2- ratio using both 16S rRNA gene and shotgun metagenomic sequencing. Ammonium removal efficiency decreased from 99.77 ± 0.04% when the ratio was 1:1.32 (prior to day 89) to 90.85 ± 0.29% when the ratio was decreased to 1:1.1 (day 89-202) and 90.14 ± 0.09% when the ratio was changed to 1:1.13 (day 169-200). Over this same timespan, the overall nitrogen removal efficiency (NRE) remained relatively unchanged (85.26 ± 0.01% from day 0-89, compared to 85.49 ± 0.01% from day 89-169, and 83.04 ± 0.01% from day 169-200). When the ratio was slightly increased to 1:1.17-1:1.2 (day 202-253), the ammonium removal efficiency increased to 97.28 ± 0.45% and the NRE increased to 88.21 ± 0.01%. Analysis of 16 S rRNA gene sequences demonstrated increased relative abundance of taxa belonging to Bacteroidetes, Chloroflexi, and Ignavibacteriae over the course of the experiment. The relative abundance of Planctomycetes, the phylum to which anammox bacteria belong, decreased from 77.19% at the beginning of the experiment to 12.24% by the end of the experiment. Analysis of metagenome assembled genomes (MAGs) indicated increased abundance of bacteria with nrfAH genes used for DNRA after the introduction of lower influent NH4+:NO2- ratios. The high relative abundance of DNRA bacteria coinciding with sustained bioreactor performance indicates a mutualistic relationship between the anammox and DNRA bacteria. Understanding these interactions could support more robust bioreactor operation at variable nitrogen loading ratios.

13.
Psychiatr Q ; 94(3): 467-482, 2023 09.
Artigo em Inglês | MEDLINE | ID: mdl-37432540

RESUMO

The present study examined 22 specific stressful life events (SLEs) in relation to recent and prospective suicidal thoughts and behaviors (STBs). The effect of assessment method (self-report vs. chart-based ratings) and inpatient/outpatient status was also investigated. Past 3-month STBs and SLEs were assessed for 1,058 psychiatric patients; 696 completed one-month follow-up assessments. SLEs were common, with 684 participants (64.7%) reporting at least one. Total number of SLEs correlated with recent and prospective STB. A higher incidence of SLE's was found with self-report vs. chart-based measures (on 20 SLEs) and inpatients vs. outpatients (on 7 SLEs). SLEs of interpersonal rejection and loss, homelessness and academic failure offered elevated risk. In sum, SLEs are common and associated with STBs in psychiatric patients. SLEs of interpersonal rejection and loss, homelessness and academic failure may merit increased clinical attention.


Assuntos
Ideação Suicida , Tentativa de Suicídio , Humanos , Tentativa de Suicídio/psicologia , Estudos Prospectivos , Autorrelato , Pacientes Internados , Fatores de Risco
15.
J Clin Psychiatry ; 84(3)2023 05 01.
Artigo em Inglês | MEDLINE | ID: mdl-37134117

RESUMO

Objective: The suicide crisis syndrome (SCS), an acute negative affect state predictive of near-term suicidal behavior, is currently under review for inclusion as a suicide-specific diagnosis in the Diagnostic and Statistical Manual of Mental Disorders (DSM). While the predictive validity of the SCS for near-term suicidal behavior is well documented, its real-world clinical utility has yet to be evaluated. As such, this study evaluated how implementation of a novel assessment tool, the Abbreviated SCS Checklist (A-SCS-C), into the electronic medical records (EMRs) influenced disposition decisions in the emergency departments (EDs) of a large urban health system.Methods: Logistic regression analyses evaluated the impact of SCS diagnosis on 212 admission/discharge decisions after accounting for chief complaints of suicidal ideation (SI), suicidal behavior (SB), and psychosis/agitation.Results: The A-SCS-C was concordant with 86.9% of all non-psychotic disposition decisions. In multivariable analysis, the A-SCS-C had an adjusted odds ratio (AOR) of 65.9 (95% confidence interval: 18.79-231.07) for inpatient admission, whereas neither suicidal ideation nor behavior was a significant predictor. The effect size remained very high in 3 sensitivity analyses, the first using information from a different section of the EMR, the second in patients younger than 18 years, and the third in males and females separately (AORs > 30).Conclusions: SCS diagnosis, when implemented in ED EMRs alongside SI and SB, was strongly predictive of clinician decision making with regard to admission/discharge, particularly in non-psychotic patients, while SI and SB were noncontributory. Overall, our results show that the SCS, as a diagnostic entity, demonstrates robust clinical utility and may reduce the limitations of relying on self-reported SI as a primary basis of suicide risk assessment.


Assuntos
Tentativa de Suicídio , Suicídio , Masculino , Feminino , Humanos , Tentativa de Suicídio/prevenção & controle , Lista de Checagem , Ideação Suicida , Tomada de Decisão Clínica , Serviço Hospitalar de Emergência , Síndrome , Fatores de Risco
16.
Environ Sci Technol Lett ; 10(4): 337-342, 2023 Apr 11.
Artigo em Inglês | MEDLINE | ID: mdl-37064824

RESUMO

Fungi and laccase mediator systems (LMSs) have a proven track record of oxidizing recalcitrant organic compounds. There has been considerable interest in applying LMSs to the treatment of perfluoroalkyl acids (PFAAs), a class of ubiquitous and persistent environmental contaminants. Some laboratory experiments have indicated modest losses of PFAAs over extended periods, but there have been no clear demonstrations of a transformation mechanism or the kinetics that would be needed for remediation applications. We set out to determine if this was a question of identifying and optimizing a rate-limiting step but discovered that observed losses of PFAAs were experimental artifacts. While unable to replicate the oxidation of PFAAs, we show that interactions of the PFAA compounds with laccase and laccase mediator mixtures could cause an artifact that mimics transformation (≲60%) of PFAAs. Furthermore, we employed a surrogate compound, carbamazepine (CBZ), and electron paramagnetic resonance spectroscopy to probe the formation of the radical species that had been proposed to be responsible for contaminant oxidation. We confirmed that under conditions where sufficient radical concentrations were produced to oxidize CBZ, no PFAA removal took place.

17.
Nord J Psychiatry ; 77(3): 266-275, 2023 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-37039324

RESUMO

PURPOSE: The aim of the present study was to investigate the psychometric validity of the Modular Assessment of Risk for Imminent Suicide (MARIS) questionnaire in relation to recent suicidal ideation and behavior among a sample of patients admitted to an acute psychiatric inpatient department in Norway. METHODS: The MARIS was completed within the first 24 h after admission by 338 patients and their clinicians. Information on recent suicidal ideation and behavior was extracted from patients' medical charts. Two out of four MARIS modules, the Suicide Trigger Scale Short-Form (STS-SF; modified version), and the Therapist Response Questionnaire Short-Form (TRQ-SF) demonstrated good internal consistency. The relationships between the STS-SF, addressing symptoms of the suicide crisis syndrome, and the TRQ-SF, exploring therapist emotional responses, and recent suicidal ideation was investigated by logistic regression analysis. RESULTS: In the logistic regression analysis including pre-selected diagnoses, age, and gender as covariates, both STS-SF and TRQ-SF showed significant associations with recent suicidal ideation (inclusive of suicidal behavior in 27% of the patients with suicidal ideation). CONCLUSION: Both the STS-SF and the TRQ-SF showed concurrent and incremental validity with regard to suicidal ideation. This is the first study showing the cross-cultural validity of the MARIS and supports its clinical utility as a suicide risk assessment tool in inpatient settings. Additionally, this study adds to the literature supporting the value of assessing clinicians' emotional responses to high risk patients.


Assuntos
Ideação Suicida , Suicídio , Humanos , Tentativa de Suicídio/psicologia , Pacientes Internados , Suicídio/psicologia , Inquéritos e Questionários , Fatores de Risco , Medição de Risco
18.
J Sex Marital Ther ; 49(4): 391-411, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36147026

RESUMO

Treatment for Minor Attracted Persons is inadequate and difficult to access. This qualitative study examined community-based MAPs' responses to narrative questions about their experiences and what they want society to understand, using an iterative thematic analysis. Notable responses from the participants included: 1) sexual attraction does not equal action; 2) minor attraction is immutable; 3) stigma leads to psychological burden; 4) therapy should aim to reduce distress, not change sexual feelings; and 5) sexual behavior can be controlled and remain within legal parameters. Further understanding of MAPs' experiences is key for developing more efficacious treatment modalities to help them live meaningful lives without endangering children.


Assuntos
Comportamento Sexual , Estigma Social , Criança , Humanos , Comportamento Sexual/psicologia , Emoções , Pesquisa Qualitativa
19.
Crisis ; 44(5): 371-379, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-36321849

RESUMO

Background: The suicidal narrative is a presuicidal state comprising several risk factors for suicide and is assessed using the Suicidal Narrative Inventory (SNI). Aims To assess the internal structure, reliability, and validity of SNI among Indian adults. Methods Between August 2020 and January 2021, the SNI, together with other self-report measures, was administered to adult respondents using an online anonymized questionnaire. Confirmatory factor analysis (CFA) was carried out to test the factor structure of the SNI. Results Usable responses were obtained from 302 participants (Mage = 43.5 ± 17.9 years, 53.6% female). The results of an eight-factor CFA of the SNI resulted in good model fit (χ2 [637] = 969.73, p < .001, comparative fit index = 1.00, root mean square error of approximation = .04). Internal consistencies of SNI subscale scores ranged from acceptable to excellent (range α = .67-.92). Most subscales significantly converged with other measures although these associations were minimal for the goal disengagement and reengagement subscales. Limitations The use of an online survey method to collect data introduced sampling bias. Conclusion The eight-factor CFA of the SNI, among Indian adults, was consistent with prior data. Our findings provide preliminary support for the use of SNI to assess the suicidal narrative construct among Indian adults.


Assuntos
Ideação Suicida , Suicídio , Humanos , Adulto , Feminino , Pessoa de Meia-Idade , Masculino , Reprodutibilidade dos Testes , Fatores de Risco , Inquéritos e Questionários , Psicometria
20.
Environ Sci Technol ; 56(22): 15478-15488, 2022 11 15.
Artigo em Inglês | MEDLINE | ID: mdl-36257682

RESUMO

Sites impacted by aqueous film-forming foam (AFFF) contain co-contaminants that can stimulate biotransformation of polyfluoroalkyl substances. Here, we compare how microbial enrichments from AFFF-impacted soil amended with diethyl glycol monobutyl ether (found in AFFF), aromatic hydrocarbons (present in co-released fuels), acetate, and methane (substrates used or formed during bioremediation) impact the aerobic biotransformation of an AFFF-derived six-carbon electrochemical fluorination (ECF) precursor N-dimethyl ammonio propyl perfluorohexane sulfonamide (AmPr-FHxSA). We found that methane- and acetate-oxidizing cultures resulted in the highest yields of identifiable products (38 and 30%, respectively), including perfluorohexane sulfonamide (FHxSA) and perfluorohexane sulfonic acid (PFHxS). Using these data, we propose and detail a transformation pathway. Additionally, we examined chemical oxidation products of AmPr-FHxSA and FHxSA to provide insights on remediation strategies for AmPr-FHxSA. We demonstrate mineralization of these compounds using the sulfate radical and test their transformation during the total oxidizable precursor (TOP) assay. While perfluorohexanoic acid accounted for over 95% of the products formed, we demonstrate here for the first time two ECF-based precursors, AmPr-FHxSA and FHxSA, that produce PFHxS during the TOP assay. These findings have implications for monitoring poly- and perfluoroalkyl substances during site remediation and application of the TOP assay at sites impacted by ECF-based precursors.


Assuntos
Fluorocarbonos , Poluentes Químicos da Água , Fluorocarbonos/análise , Carbono , Poluentes Químicos da Água/análise , Água , Sulfanilamida , Sulfonamidas , Metano
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