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1.
J Health Commun ; 29(2): 119-130, 2024 02.
Artigo em Inglês | MEDLINE | ID: mdl-38131342

RESUMO

The National Cancer Institute's (NCI) Health Information National Trends Survey (HINTS) is a nationally representative survey of U.S. adults in which 12-17% of respondents report a cancer history. To increase representation from adult cancer survivors, in 2021, NCI sampled survivors from three Surveillance, Epidemiology, and End Results (SEER) program cancer registries: Iowa, New Mexico, and the Greater Bay Area. Sampling frames were stratified by time since diagnosis and race/ethnicity, with nonmalignant tumors and non-melanoma skin cancers excluded. Participants completed a self-administered postal questionnaire. The overall response rate for HINTS-SEER (N = 1,234) was 12.6%; a non-response bias analysis indicated few demographic differences between respondents and the pool of sampled patients in each registry. Most of the sample was 10+ years since diagnosis (n = 722; 60.2%); 392 respondents were 5 to < 10 years since diagnosis (29.6%); and 120 were < 5 years since diagnosis (10.2%). Common cancers included male reproductive (n = 304; 24.6%), female breast (n = 284; 23.0%), melanoma (n = 119; 9.6%), and gastrointestinal (n = 106; 8.6%). Tumors were mostly localized (67.8%; n = 833), with 22.4% (n = 282) regional, 6.2% (n = 72) distant, and 3.7% (n = 47) unknown. HINTS-SEER data are available by request and may be used for secondary analyses to examine a range of social, behavioral, and healthcare outcomes among cancer survivors.


Assuntos
Sobreviventes de Câncer , Neoplasias , Adulto , Estados Unidos/epidemiologia , Humanos , Masculino , Feminino , Projetos Piloto , National Cancer Institute (U.S.) , Neoplasias/terapia , Sistema de Registros , Inquéritos e Questionários , Incidência
2.
Child Psychiatry Hum Dev ; 54(3): 665-671, 2023 06.
Artigo em Inglês | MEDLINE | ID: mdl-34724135

RESUMO

Youth with dental anxiety are at an increased risk of poor oral health but current tools used to identify dental anxiety in children in clinical settings are hampered by several limitations. This study assessed the psychometric properties of a measure of implicit associations with dental stimuli, the Affective Misattribution Procedure for dental stimuli (AMP-D) in 68 youth between the ages of 9 and 17 years. Measures of self-reported dental anxiety and parental perceptions of child dental anxiety were also administered. The internal consistency of the AMP-D was high (KR-20 = 0.96) and 1-week test-retest reliability was in the acceptable range (r = 0.75). The AMP-D was correlated with self-reported dental anxiety, providing evidence of construct validity. The psychometric properties of the AMP-D suggest it could be a useful tool in identifying youth with dental anxiety, particularly when concerns regarding self-representation may compromise the validity of self-reported anxiety.


Assuntos
Transtornos de Ansiedade , Ansiedade , Criança , Humanos , Adolescente , Reprodutibilidade dos Testes , Ansiedade/diagnóstico , Medo , Autorrelato , Psicometria , Inquéritos e Questionários
3.
Psychooncology ; 31(4): 641-648, 2022 04.
Artigo em Inglês | MEDLINE | ID: mdl-34747095

RESUMO

OBJECTIVE: To examine if the relationship between neuroticism and physician avoidance/physician visit concerns are mediated by perceptions that cancer is associated with death ("cancer mortality salience"; CMS) for cancer survivors to inform public health interventions and tailored health communications. METHODS: Cancer survivors comprised 42.3% of the total sample (n = 525). Participants completed a 4-item neuroticism scale, 4-item cancer perceptions scale, and 4-item physician avoidance and concerns scale. Multiple linear regression models were used to assess relationships among variables for cancer survivors and separately for those without a history of cancer. RESULTS: Neuroticism was positively associated with CMS for cancer survivors, b = 0.26, (p < 0.001), and those without cancer, b = 0.22, (p < 0.001). There was an association between neuroticism and physician avoidance among cancer survivors with temporally distant treatment courses after controlling for CMS, b = 0.56 (p = 0.006), but not for those currently or recently having had undergone treatment (p = 0.949). There was also an indirect relationship between neuroticism and physician visit concerns that was mediated by CMS for cancer survivors, b = 0.07, CI = [0.03, 0.13], but this relationship was again driven by cancer survivors with more distal treatment courses. CONCLUSIONS: High neuroticism in cancer survivors is associated with physician avoidance and physician visit concerns when treatment is temporally distant. Interventions aimed at decoupling the association between cancer and death can help increase the willingness of cancer survivors to attain cancer care follow-ups and healthcare more generally.


Assuntos
Sobreviventes de Câncer , Neoplasias , Médicos , Humanos , Neoplasias/terapia , Neuroticismo
4.
Am J Public Health ; 110(1): 37-44, 2020 01.
Artigo em Inglês | MEDLINE | ID: mdl-31725317

RESUMO

Objectives. To describe and control an outbreak of HIV infection among people who inject drugs (PWID).Methods. The investigation included people diagnosed with HIV infection during 2015 to 2018 linked to 2 cities in northeastern Massachusetts epidemiologically or through molecular analysis. Field activities included qualitative interviews regarding service availability and HIV risk behaviors.Results. We identified 129 people meeting the case definition; 116 (90%) reported injection drug use. Molecular surveillance added 36 cases to the outbreak not otherwise linked. The 2 largest molecular groups contained 56 and 23 cases. Most interviewed PWID were homeless. Control measures, including enhanced field epidemiology, syringe services programming, and community outreach, resulted in a significant decline in new HIV diagnoses.Conclusions. We illustrate difficulties with identification and characterization of an outbreak of HIV infection among a population of PWID and the value of an intensive response.Public Health Implications. Responding to and preventing outbreaks requires ongoing surveillance, with timely detection of increases in HIV diagnoses, community partnerships, and coordinated services, all critical to achieving the goal of the national Ending the HIV Epidemic initiative.


Assuntos
Infecções por HIV/epidemiologia , Infecções por HIV/prevenção & controle , Transtornos Relacionados ao Uso de Opioides/epidemiologia , Prática de Saúde Pública , Abuso de Substâncias por Via Intravenosa/epidemiologia , Adolescente , Adulto , Participação da Comunidade , Feminino , Genótipo , Infecções por HIV/diagnóstico , Infecções por HIV/etiologia , Acessibilidade aos Serviços de Saúde , Pessoas Mal Alojadas/estatística & dados numéricos , Humanos , Masculino , Massachusetts/epidemiologia , Pessoa de Meia-Idade , Programas de Troca de Agulhas/organização & administração , Reação em Cadeia da Polimerase , Grupos Raciais , População Urbana/estatística & dados numéricos , Adulto Jovem , Produtos do Gene pol do Vírus da Imunodeficiência Humana/genética
5.
AIDS Care ; 32(4): 522-529, 2020 04.
Artigo em Inglês | MEDLINE | ID: mdl-31315449

RESUMO

Although HIV diagnoses among women have declined in recent years in the United States (U.S.), women accounted for 19% of new HIV diagnoses in 2016. In addition, women comprise 24% of the 973,846 persons living with HIV infection in the U.S. However, HIV prevention interventions targeting women are limited. We performed a review on HIV infection in women to increase awareness, improve overall care, and inform intervention development. A systematic literature review was conducted using literature published in PubMed, PsychINFO (EBSCO), and Scopus from July 2000 and June 2017. We included studies that: (1) were conducted in the U.S., (2) enrolled at least 50 HIV-positive women, and (3) utilized a case-control, cohort, or surveillance study design. Of 7497 articles, 48 articles met inclusion criteria. HIV diagnoses among women declined 32% between 2001 and 2016. In 2016, 61% of diagnoses in women were among African American women, and 56% were in the South. Women reported barriers to HIV care largely due to psychosocial challenges and social/structural determinants of health (SDH) barriers. Though new diagnoses among women have declined, racial and regional disparities remain. HIV prevention and research efforts with women are vital to inform interventions and reduce disparities.


Assuntos
Infecções por HIV/diagnóstico , Infecções por HIV/prevenção & controle , Determinantes Sociais da Saúde , Estigma Social , Negro ou Afro-Americano , Discriminação Psicológica , Feminino , Infecções por HIV/etnologia , Acessibilidade aos Serviços de Saúde , Humanos , Grupos Raciais/estatística & dados numéricos
6.
Int J Behav Med ; 26(4): 365-371, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31161591

RESUMO

BACKGROUND: Currently, little is known about the implicit evaluations that cancer survivors have for health behaviors, such as eating fruits and vegetables. Understanding both the implicit and explicit evaluations of fruit and vegetable consumption among cancer survivors may aid future interventions for changing motivations and intentions in this higher risk population. METHODS: A cross-sectional study at a university cancer center assessed explicit and implicit evaluations of fruit and vegetable consumption among 122 cancer survivors. The explicit evaluations regarding fruit and vegetable consumption were self-report data. To obtain implicit evaluations, participants completed an implicit evaluation task, the Affect Misattribution Paradigm. Moderating variables of time since first cancer treatment and if participants had a prior cancer occurrence were also self-reported. RESULTS: Simple correlations found no significant association between the implicit and explicit evaluations of fruit and vegetable consumption. Moderation regression analyses showed that the implicit and explicit evaluations became negatively associated as time since first treatment increased and when participants had a prior cancer occurrence. CONCLUSION: The results support the view that implicit and explicit measures of fruit and vegetable consumption diverge for cancer survivors, consistent to implicit and explicit evaluations in other domains and samples. Further, the association between these evaluations differed depending on time since first treatment and if they have been treated for a prior cancer occurrence. By knowing more about implicit and explicit positive evaluations, and their moderators, it may be possible for interventionists to alter cancer survivors' motivation and intention to eat fruits and vegetables.


Assuntos
Sobreviventes de Câncer/psicologia , Comportamento Alimentar/psicologia , Frutas , Neoplasias/psicologia , Verduras , Adulto , Idoso , Sobreviventes de Câncer/estatística & dados numéricos , Estudos Transversais , Inquéritos sobre Dietas , Feminino , Comportamentos Relacionados com a Saúde , Humanos , Intenção , Masculino , Pessoa de Meia-Idade , Motivação , Adulto Jovem
7.
Arch Sex Behav ; 47(1): 289-297, 2018 01.
Artigo em Inglês | MEDLINE | ID: mdl-28444529

RESUMO

In 2014, Black/African-American and Hispanic/Latino men who have sex with men (BLMSM) comprised 64.1% of HIV diagnoses among MSM in the U.S. Routine HIV testing allows earlier diagnosis, linkage to care, and improved health outcomes. HIV testing campaigns may increase HIV awareness and testing behaviors, but perceptions of these campaigns by BLMSM have been understudied. We explored perceptions of HIV testing campaigns with BLMSM in New York City (NYC) to inform campaign strategies that target BLMSM for HIV testing. Using respondent-driven sampling methods, we conducted semi-structured interviews from 2011 to 2012 with BLMSM in NYC who participated in a larger HIV research study. Interview responses from 108 participants were examined for main themes using computer-assisted thematic analyses. The four main themes identified were that HIV testing campaigns should: (1) use non-stereotypical messages and images on the basis of race and sexuality, (2) use non-gay identified images, (3) be maximally inclusive and visible, and (4) raise risk perception of HIV. These findings can inform future campaigns for strengthening HIV testing among BLMSM in support of earlier diagnosis, linkage to care, and reduced disparities.


Assuntos
Negro ou Afro-Americano/psicologia , Infecções por HIV/diagnóstico , Hispânico ou Latino/psicologia , Programas de Rastreamento/psicologia , Adolescente , Adulto , Conhecimentos, Atitudes e Prática em Saúde , Homossexualidade Masculina , Humanos , Masculino , Pessoa de Meia-Idade , Cidade de Nova Iorque , Adulto Jovem
8.
Cult Health Sex ; 20(7): 761-771, 2018 07.
Artigo em Inglês | MEDLINE | ID: mdl-28929864

RESUMO

We examined factors that may be associated with whether Black men who have sex with men a) disclose their sexual orientation to healthcare providers, and b) discuss their sexual health with healthcare providers to inform interventions to improve HIV prevention efforts and reduce HIV incidence rates among Black men who have sex with men. During 2011-2012, we conducted semi-structured individual in-depth interviews with Black men who have sex with men in New York City. Interviews were audio recorded. We examined transcribed responses for main themes using a qualitative exploratory approach followed by computer-assisted thematic analyses. Twenty-nine men participated. The median age was 25.3 years; 41% (n = 12) earned an annual income of < US$10,000; 72% (n = 21) had a college degree; 86% (n = 25) reported being single; 69% (n = 20) self-identified as gay or homosexual. We identified three main themes affecting whether the men discussed their sexual orientation and sexual health with healthcare providers: 1) comfort discussing sexual health needs; 2) health literacy; and 3) trust. Identifying strategies for improved comfort, health literacy and trust between Black men who have sex with men and healthcare providers may be an important strategy for increasing sexual health patient-provider communications, increasing opportunities for HIV prevention including testing and reducing HIV-related health disparities.


Assuntos
Negro ou Afro-Americano/estatística & dados numéricos , Infecções por HIV/prevenção & controle , Comunicação em Saúde , Homossexualidade Masculina/psicologia , Relações Médico-Paciente , Saúde Sexual , Confiança , Adulto , Estudos Transversais , Atenção à Saúde , Revelação , Infecções por HIV/epidemiologia , Letramento em Saúde , Humanos , Entrevistas como Assunto , Masculino , Cidade de Nova Iorque/epidemiologia , Comportamento Sexual
9.
Sex Cult ; 22(1): 258-270, 2018 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-31371911

RESUMO

Strong gay identity among white men who have sex with men (MSM) has been associated with decreased HIV risk, but data for black and Latino MSM (BLMSM) are inconclusive. We examined gay identity and HIV risk among BLMSM to inform social and structural HIV intervention strategies. BLMSM were administered a computerized survey as part of an HIV research study during 2011-2012 conducted in New York City. We used a brief scale of Gay Identity Questionnaire. After data analysis, Stage I (not fully accepting) and Stage II (fully accepting) gay identity were determined based on participant responses. We used logistic regression to calculate adjusted odds ratios (aOR) and 95% confidence intervals (CI) for the association between gay identity with HIV risk and social determinant factors. Among 111 self-identified BLMSM (median age = 32 years, 68.4% with some college or higher education), 34.2 reported receptive anal sex without condoms in the previous three months. Gay Identity Questionnaire Scale assessment indicated that 22 (19.8%) were Stage I, and 85 (76.6%) were Stage II in this BLMSM sample. Stage II gay identity was more likely seen among BLMSM with high involvement in the gay community (aOR 3.2; CI 1.00, 10.26) and less likely among BLMSM who exchanged sex for food or shelter (aOR 0.15; CI 0.02, 0.98). Fully accepting gay identity may be protective for BLMSM as it relates to transactional sex; these factors warrant further research and consideration as part of HIV prevention strategies.

10.
Exp Lung Res ; 43(8): 311-326, 2017 10.
Artigo em Inglês | MEDLINE | ID: mdl-29140132

RESUMO

PURPOSE OF THE STUDY: A number of in vivo studies have shown that pulmonary exposure to carbon nanotubes (CNTs) may lead to an acute local inflammatory response, pulmonary fibrosis, and granulomatous lesions. Among the factors that play direct roles in initiation and progression of fibrotic processes are epithelial-mesenchymal transition and myofibroblasts recruitment/differentiation, both mediated by transforming growth factor-ß1 (TGF-ß1). Yet, other contributors to TGF-ß1 associated signaling, such as osteopontin (OPN) has not been fully investigated. MATERIALS AND METHODS: OPN-knockout female mice (OPN-KO) along with their wild-type (WT) counterparts were exposed to single-walled carbon nanotubes (SWCNT) (40 µg/mouse) via pharyngeal aspiration and fibrotic response was assessed 1, 7, and 28 days post-exposure. Simultaneously, RAW 264.7 and MLE-15 cells were treated with SWCNT (24 hours, 6 µg/cm2 to 48 µg/cm2) or bleomycin (0.1 µg/ml) in the presence of OPN-blocking antibody or isotype control, and TGF-ß1 was measured in supernatants. RESULTS AND CONCLUSIONS: Diminished lactate dehydrogenase activity at all time points, along with less pronounced neutrophil influx 24 h post-exposure, were measured in broncho-alveolar lavage (BAL) of OPN-KO mice compared to WT. Pro-inflammatory cytokine release (IL-6, TNF-α, MCP-1) was reduced. A significant two-fold increase of TGF-ß1 was found in BAL of WT mice at 7 days, while TGF-ß1 levels in OPN-KO animals remained unaltered. Histological examination revealed marked decrease in granuloma formation and less collagen deposition in the lungs of OPN-KO mice compared to WT. RAW 264.7 but not MLE-15 cells exposed to SWCNT and bleomycin had significantly less TGF-ß1 released in the presence of OPN-blocking antibody. We believe that OPN is important in initiating the cellular mechanisms that produce an overall pathological response to SWCNT and it may act upstream of TGF-ß1. Further investigation to understand the mechanistic details of such interactions is critical to predict outcomes of pulmonary exposure to CNT.


Assuntos
Nanotubos de Carbono/efeitos adversos , Osteopontina/fisiologia , Fibrose Pulmonar/etiologia , Fator de Crescimento Transformador beta1/fisiologia , Animais , Anticorpos/farmacologia , Lavagem Broncoalveolar , Linhagem Celular , Citocinas/metabolismo , Feminino , Camundongos , Camundongos Knockout , Osteopontina/genética , Osteopontina/imunologia , Células RAW 264.7 , Fator de Crescimento Transformador beta1/análise , Fator de Crescimento Transformador beta1/efeitos dos fármacos
11.
J Relig Health ; 55(6): 1968-79, 2016 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-26883229

RESUMO

In Alabama, 70 % of new HIV cases are among African Americans. Because the Black Church plays an important role for many African Americans in the south, we conducted qualitative interviews with 10 African American pastors recruited for an HIV intervention study in rural Alabama. Two main themes emerged: (1) HIV stigma is prevalent and (2) the role of the Black Church in addressing HIV in the African American community. Our data suggest that pastors in rural Alabama are willing to be engaged in HIV prevention solutions; more formalized training is needed to decrease stigma, strengthen HIV prevention and support persons living with HIV/AIDS.


Assuntos
Atitude Frente a Saúde , Negro ou Afro-Americano/psicologia , Clero/psicologia , Infecções por HIV/psicologia , Promoção da Saúde/métodos , População Rural , Alabama , Estudos de Avaliação como Assunto , Infecções por HIV/prevenção & controle , Humanos , Estigma Social
12.
Am J Physiol Lung Cell Mol Physiol ; 306(2): L170-82, 2014 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-24213921

RESUMO

The hallmark geometric feature of single-walled carbon nanotubes (SWCNT) and carbon nanofibers (CNF), high length to width ratio, makes them similar to a hazardous agent, asbestos. Very limited data are available concerning long-term effects of pulmonary exposure to SWCNT or CNF. Here, we compared inflammatory, fibrogenic, and genotoxic effects of CNF, SWCNT, or asbestos in mice 1 yr after pharyngeal aspiration. In addition, we compared pulmonary responses to SWCNT by bolus dosing through pharyngeal aspiration and inhalation 5 h/day for 4 days, to evaluate the effect of dose rate. The aspiration studies showed that these particles can be visualized in the lung at 1 yr postexposure, whereas some translocate to lymphatics. All these particles induced chronic bronchopneumonia and lymphadenitis, accompanied by pulmonary fibrosis. CNF and asbestos were found to promote the greatest degree of inflammation, followed by SWCNT, whereas SWCNT were the most fibrogenic of these three particles. Furthermore, SWCNT induced cytogenetic alterations seen as micronuclei formation and nuclear protrusions in vivo. Importantly, inhalation exposure to SWCNT showed significantly greater inflammatory, fibrotic, and genotoxic effects than bolus pharyngeal aspiration. Finally, SWCNT and CNF, but not asbestos exposures, increased the incidence of K-ras oncogene mutations in the lung. No increased lung tumor incidence occurred after 1 yr postexposure to SWCNT, CNF, and asbestos. Overall, our data suggest that long-term pulmonary toxicity of SWCNT, CNF, and asbestos is defined, not only by their chemical composition, but also by the specific surface area and type of exposure.


Assuntos
Amianto/toxicidade , Carbono/toxicidade , Exposição por Inalação/efeitos adversos , Nanotubos de Carbono/toxicidade , Pneumonia/induzido quimicamente , Fibrose Pulmonar/induzido quimicamente , Administração por Inalação , Animais , Líquido da Lavagem Broncoalveolar/imunologia , Broncopneumonia/induzido quimicamente , Broncopneumonia/imunologia , Broncopneumonia/patologia , Carcinógenos/toxicidade , Feminino , Genes ras/genética , Linfadenite/induzido quimicamente , Linfadenite/imunologia , Linfadenite/patologia , Camundongos , Camundongos Endogâmicos C57BL , Pneumonia/imunologia , Pneumonia/patologia , Fibrose Pulmonar/imunologia , Fibrose Pulmonar/patologia , Análise Espectral Raman , Tempo
14.
bioRxiv ; 2024 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-38352333

RESUMO

Respiratory syncytial virus (RSV) is a common cause of respiratory infections, causing significant morbidity and mortality, especially in young children. Why RSV infection in children is more severe as compared to healthy adults is not fully understood. In the present study, we infect both pediatric and adult human nose organoid-air liquid interface (HNO-ALIs) cell lines with two contemporary RSV isolates and demonstrate how they differ in virus replication, induction of the epithelial cytokine response, cell injury, and remodeling. Pediatric HNO-ALIs were more susceptible to early RSV replication, elicited a greater overall cytokine response, demonstrated enhanced mucous production, and manifested greater cellular damage compared to their adult counterparts. Adult HNO-ALIs displayed enhanced mucus production and robust cytokine response that was well controlled by superior regulatory cytokine response and possibly resulted in lower cellular damage than in pediatric lines. Taken together, our data suggest substantial differences in how pediatric and adult upper respiratory tract epithelium responds to RSV infection. These differences in epithelial cellular response can lead to poor mucociliary clearance and predispose infants to a worse respiratory outcome of RSV infection.

15.
Small ; 9(9-10): 1686-90, 2013 May 27.
Artigo em Inglês | MEDLINE | ID: mdl-22887961

RESUMO

Graphene oxide (GO) and C60 - or C60 -TRIS fullerenes, internalized by murine dendritic cells (DCs), differently affect their abilities to present antigens to T-cells. While C60 -fullerenes stimulate the ovalbumin-specific MHC class I-restricted T-cell response, GO impairs the stimulatory potential of DCs. In contrast to C60 -fullerenes, GO decreases the intracellular levels of LMP7 immunoproteasome subunits required for processing of protein antigens. This is important for the development of DC-based vaccines.


Assuntos
Apresentação de Antígeno/efeitos dos fármacos , Células Dendríticas/efeitos dos fármacos , Fulerenos/farmacologia , Grafite/farmacologia , Complexo de Endopeptidases do Proteassoma/efeitos dos fármacos , Animais , Células Dendríticas/imunologia , Grafite/química , Camundongos , Óxidos/farmacologia
16.
J Toxicol Environ Health A ; 76(15): 907-21, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-24156694

RESUMO

Over the past decade, soy biodiesel (BD) has become a first alternative energy source that is economically viable and meets requirements of the Clean Air Act. Due to lower mass emissions and reduced hazardous compounds compared to diesel combustion emissions (CE), BD exposure is proposed to produce fewer adverse health effects. However, considering the broad use of BD and its blends in different industries, this assertion needs to be supported and validated by mechanistic and toxicological data. Here, adverse effects were compared in lungs and liver of BALB/cJ mice after inhalation exposure (0, 50, 150, or 500 µg/m3; 4 h/d, 5 d/wk, for 4 wk) to CE from 100% biodiesel (B100) and diesel (D100). Compared to D100, B100 CE produced a significant accumulation of oxidatively modified proteins (carbonyls), an increase in 4-hydroxynonenal (4-HNE), a reduction of protein thiols, a depletion of antioxidant gluthatione (GSH), a dose-related rise in the levels of biomarkers of tissue damage (lactate dehydrogenase, LDH) in lungs, and inflammation (myeloperoxidase, MPO) in both lungs and liver. Significant differences in the levels of inflammatory cytokines interleukin (IL)-6, IL-10, IL-12p70, monocyte chemoattractant protein (MCP)-1, interferon (IFN) γ, and tumor necrosis factor (TNF)-α were detected in lungs and liver upon B100 and D100 CE exposures. Overall, the tissue damage, oxidative stress, inflammation, and cytokine response were more pronounced in mice exposed to BD CE. Further studies are required to understand what combustion products in BD CE accelerate oxidative and inflammatory responses.


Assuntos
Poluentes Atmosféricos/toxicidade , Biocombustíveis , Exposição por Inalação/efeitos adversos , Fígado/efeitos dos fármacos , Pulmão/efeitos dos fármacos , Estresse Oxidativo/efeitos dos fármacos , Emissões de Veículos/toxicidade , Administração por Inalação , Animais , Biomarcadores/metabolismo , Citocinas/metabolismo , Relação Dose-Resposta a Droga , Feminino , L-Lactato Desidrogenase/metabolismo , Fígado/metabolismo , Fígado/patologia , Pulmão/metabolismo , Pulmão/patologia , Camundongos , Camundongos Endogâmicos BALB C , Peroxidase/metabolismo
17.
Part Fibre Toxicol ; 9: 16, 2012 May 23.
Artigo em Inglês | MEDLINE | ID: mdl-22621311

RESUMO

BACKGROUND: Single-walled carbon nanotubes (SWCNT) trigger pronounced inflammation and fibrosis in the lungs of mice following administration via pharyngeal aspiration or inhalation. Human exposure to SWCNT in an occupational setting may occur in conjunction with infections and this could yield enhanced or suppressed responses to the offending agent. Here, we studied whether the sequential exposure to SWCNT via pharyngeal aspiration and infection of mice with the ubiquitous intracellular parasite Toxoplasma gondii would impact on the immune response of the host against the parasite. METHODS: C57BL/6 mice were pre-exposed by pharyngeal administration of SWCNT (80 + 80 µg/mouse) for two consecutive days followed by intravenous injection with either 1x103 or 1x104 green fluorescence protein and luciferase-expressing T. gondii tachyzoites. The dissemination of T. gondii was monitored by in vivo bioluminescence imaging in real time for 7 days and by plaque formation. The inflammatory response was analysed in bronchoalveolar lavage (BAL) fluid, and by assessment of morphological changes and immune responses in lung and spleen. RESULTS: There were no differences in parasite distribution between mice only inoculated with T. gondii or those mice pre-exposed for 2 days to SWCNT before parasite inoculum. Lung and spleen histology and inflammation markers in BAL fluid reflected the effects of SWCNT exposure and T. gondii injection, respectively. We also noted that CD11c positive dendritic cells but not F4/80 positive macrophages retained SWCNT in the lungs 9 days after pharyngeal aspiration. However, co-localization of T. gondii with CD11c or F4/80 positive cells could not be observed in lungs or spleen. Pre-exposure to SWCNT did not affect the splenocyte response to T. gondii. CONCLUSIONS: Taken together, our data indicate that pre-exposure to SWCNT does not enhance or suppress the early immune response to T. gondii in mice.


Assuntos
Imunidade Celular/efeitos dos fármacos , Pulmão/efeitos dos fármacos , Nanotubos de Carbono/toxicidade , Pneumonia/induzido quimicamente , Toxoplasma/patogenicidade , Toxoplasmose Animal/patologia , Animais , Líquido da Lavagem Broncoalveolar/química , Líquido da Lavagem Broncoalveolar/citologia , Imunidade Celular/imunologia , Intubação Intratraqueal , Pulmão/imunologia , Pulmão/patologia , Camundongos , Camundongos Endogâmicos C57BL , Pneumonia/imunologia , Pneumonia/microbiologia , Fibrose Pulmonar , Baço/efeitos dos fármacos , Baço/imunologia , Baço/patologia , Toxoplasmose Animal/imunologia , Toxoplasmose Animal/fisiopatologia
18.
Part Fibre Toxicol ; 9: 10, 2012 Apr 10.
Artigo em Inglês | MEDLINE | ID: mdl-22490147

RESUMO

BACKGROUND: Carbon nanotubes (CNT) and carbon nanofibers (CNF) are allotropes of carbon featuring fibrous morphology. The dimensions and high aspect ratio of CNT and CNF have prompted the comparison with naturally occurring asbestos fibers which are known to be extremely pathogenic. While the toxicity and hazardous outcomes elicited by airborne exposure to single-walled CNT or asbestos have been widely reported, very limited data are currently available describing adverse effects of respirable CNF. RESULTS: Here, we assessed pulmonary inflammation, fibrosis, oxidative stress markers and systemic immune responses to respirable CNF in comparison to single-walled CNT (SWCNT) and asbestos. Pulmonary inflammatory and fibrogenic responses to CNF, SWCNT and asbestos varied depending upon the agglomeration state of the particles/fibers. Foci of granulomatous lesions and collagen deposition were associated with dense particle-like SWCNT agglomerates, while no granuloma formation was found following exposure to fiber-like CNF or asbestos. The average thickness of the alveolar connective tissue--a marker of interstitial fibrosis--was increased 28 days post SWCNT, CNF or asbestos exposure. Exposure to SWCNT, CNF or asbestos resulted in oxidative stress evidenced by accumulations of 4-HNE and carbonylated proteins in the lung tissues. Additionally, local inflammatory and fibrogenic responses were accompanied by modified systemic immunity, as documented by decreased proliferation of splenic T cells ex vivo on day 28 post exposure. The accuracies of assessments of effective surface area for asbestos, SWCNT and CNF (based on geometrical analysis of their agglomeration) versus estimates of mass dose and number of particles were compared as predictors of toxicological outcomes. CONCLUSIONS: We provide evidence that effective surface area along with mass dose rather than specific surface area or particle number are significantly correlated with toxicological responses to carbonaceous fibrous nanoparticles. Therefore, they could be useful dose metrics for risk assessment and management.


Assuntos
Asbesto Crocidolita/toxicidade , Nanofibras/toxicidade , Nanotubos de Carbono/toxicidade , Pneumonia/induzido quimicamente , Animais , Asbesto Crocidolita/química , Líquido da Lavagem Broncoalveolar/química , Líquido da Lavagem Broncoalveolar/citologia , Líquido da Lavagem Broncoalveolar/imunologia , Proliferação de Células/efeitos dos fármacos , Colágeno/metabolismo , Citocinas/imunologia , Citocinas/metabolismo , Feminino , Macrófagos Alveolares/citologia , Macrófagos Alveolares/efeitos dos fármacos , Macrófagos Alveolares/imunologia , Camundongos , Camundongos Endogâmicos C57BL , Microscopia Eletrônica de Varredura , Fibras Minerais/toxicidade , Nanofibras/química , Nanotubos de Carbono/química , Neutrófilos/citologia , Neutrófilos/efeitos dos fármacos , Neutrófilos/imunologia , Estresse Oxidativo/efeitos dos fármacos , Estresse Oxidativo/imunologia , Tamanho da Partícula , Pneumonia/imunologia , Pneumonia/metabolismo , Pneumonia/patologia , Valor Preditivo dos Testes , Baço/efeitos dos fármacos , Baço/imunologia , Propriedades de Superfície , Linfócitos T/efeitos dos fármacos , Linfócitos T/imunologia , Fatores de Tempo
19.
PLoS One ; 17(12): e0279725, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36584146

RESUMO

INTRODUCTION: Patient-centered communication (PCC) is one important component of patient-centered care and seen as a goal for most clinical encounters. Previous research has shown that higher PCC is related to an increase in healthy behaviors and less morbidity, among other outcomes. Given its importance, the National Cancer Institute (NCI) commissioned a monograph in 2007 to synthesize the existing literature on PCC and determine measurement objectives and strategies for measuring this construct, with a particular focus on cancer survivors. Based on this effort, a seven-item PCC scale was included on the Health Information National Trends Survey (HINTS), a probability-based survey of the US adult population. This study used HINTS data collected in 2018 to evaluate the psychometric properties of the PCC scale for the general US adult population including measures of reliability and validity. RESULTS: Through an exploratory factor analysis, the seven-item PCC scale was shown to be unidimensional with good internal consistency (Cronbach's alpha = .92). A confirmatory factor analysis verified the factor structure. Other construct validity metrics included known groups and discriminant validity. Known group comparisons were conducted for several sociodemographic factors and health self-efficacy confirming a priori assumptions. Discriminant validity tests with measures of social support and anxiety/depression showed relatively weak associations. CONCLUSIONS: The psychometric properties of this scale demonstrate its scientific utility for both surveillance research and other smaller-scale studies. Given its association with many health outcomes, it can also be used to better understand the dynamics in a clinical encounter.


Assuntos
Comunicação , Pesquisas sobre Atenção à Saúde , Assistência Centrada no Paciente , Adulto , Humanos , Análise Fatorial , Psicometria , Reprodutibilidade dos Testes , Estados Unidos
20.
Pediatr Qual Saf ; 7(4): e580, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35928022

RESUMO

Despite recommendations promoting noninvasive delivery room (DR) ventilation, local historical preterm DR noninvasive ventilation rates were low (50%-64%). Project aims were to improve DR noninvasive ventilation rate in very low birth weight (VLBW) neonates (<1500 g) with a focus on decreasing DR intubations for ineffective positive pressure ventilation (PPV). Methods: We addressed drivers for improving noninvasive ventilation and decreasing intubations for ineffective PPV through plan-do-study-act cycles. Outcome measures were intubation for ineffective PPV (defined as intubation for heart rate <100 despite ongoing PPV) and final respiratory support in the DR. Our process measure was adherence to division-wide DR-intubation guidelines. Balancing measures were maximum FiO2 and hypothermia. We analyzed data using statistical process control charts and special cause variation rules. Results: There were 139 DR intubations among 521 VLBW neonates between January 2015 and February 2020. The noninvasive ventilation rate upon intensive care nursery admission was higher than historically reported at 73% and sustained throughout the project. The intubation rate for ineffective PPV was 10% and did not change. The number of VLBW neonates between intubations for ineffective PPV increased from 6.1 to 8.0. Ten intubations did not comply with guidelines. Balancing measures were unaffected. Conclusions: Noninvasive ventilation rates were higher than historically reported and remained high. After plan-do-study-act cycles, the number of VLBW neonates between intubations for ineffective PPV increased without impacting balancing measures. Our data demonstrate that effective ventilation (heart rate > 100) using noninvasive support is possible in up to 90% of VLBW infants but requires ongoing PPV training.

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