Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 34
Filtrar
1.
BMC Prim Care ; 25(1): 338, 2024 Sep 13.
Artigo em Inglês | MEDLINE | ID: mdl-39271996

RESUMO

BACKGROUND: Community health workers (CHWs) remain an underutilized resource in social risk diagnostics in the primary care setting. This process evaluation study seeks to assess the role of CHWs in social risk screening, referral, and follow-up through process mapping to identify barriers to the process for future quality improvement efforts. METHODS: Researchers at the Arizona Prevention Research Center (AzPRC) engaged with two Federally Qualified Health Centers (FQHCs) in two of Arizona's major urban areas to evaluate their internal processes for social risk screening and intervention. The Consolidated Framework for Implementation Research (CFIR) was used to direct a process mapping exercise to visually describe the workflow, gaps, and barriers to identifying and addressing social risk. RESULTS: The process unveiled key areas for health system improvements in the community setting, the organizational setting, and in the implementation of social risk screening, referral, and follow-up. Further, process maps highlight the potential resources needed for effective CHW integration to address social risk in the primary care setting. CONCLUSIONS: Our findings demonstrate the importance of organizational tools, such as process mapping, to assist primary care settings in evaluating internal processes for quality improvement in addressing social risk and in effectively integrating the CHW workforce. Subsequent research will evaluate rates of social risk screening, referral, and follow-up within all of Arizona's FQHCs and propose models for CHW integration to address social risk in primary care and strengthen social risk screening reach and effectiveness.


Assuntos
Agentes Comunitários de Saúde , Atenção Primária à Saúde , Encaminhamento e Consulta , Humanos , Atenção Primária à Saúde/organização & administração , Agentes Comunitários de Saúde/organização & administração , Arizona , Programas de Rastreamento/métodos , Papel Profissional , Medição de Risco
2.
PLoS One ; 19(7): e0307479, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39046951

RESUMO

INTRODUCTION: The Latinx population has the second highest COVID-19 death rate among racial/ethnic groups in the United States and less than half of Latinx youth aged 5-17 years old completed their COVID-19 primary vaccination series as of September 2022. COVID-19 vaccine misinformation detrimentally impacts vaccination rates. In this study, we examined factors that predicted Latinx youth COVID-19 vaccine hesitancy and vaccination status. METHODS: A community-based sample of 290 Latinx parent and adolescent dyads from a Southwestern metropolitan area of the United States who were recruited to complete an online survey at baseline at T1 (August 2020 -March 2021) and one year later. We tested a longitudinal mediation model in which we examined individual and family factors that would predict youth COVID-19 vaccine hesitancy and vaccination status over time. RESULTS: Youth's pandemic disbelief (i.e., the belief that the COVID-19 pandemic is a conspiracy or not real) predicted greater youth's COVID-19 vaccine hesitancy, and in turn, a lower likelihood of youth's COVID-19 vaccination. Youth's pandemic disbelief also predicted greater parent's vaccination hesitancy which, in turn, predicted greater youth's vaccination hesitancy and a lower likelihood of COVID-19 vaccination. Parents' pandemic disbelief predicted their own COVID-19 hesitancy, but not youth hesitancy. DISCUSSION: Our study findings provide initial evidence that general pandemic disbelief was a significant driver of vaccine hesitancy and vaccination among Latinx families. The study contributes to the limited research investigating COVID-19 vaccination in the Latinx community and among Latinx youth, further aiding how COVID-19 vaccine disparities can be mitigated among racial/ethnic populations.


Assuntos
Vacinas contra COVID-19 , COVID-19 , Hispânico ou Latino , Pais , Hesitação Vacinal , Adolescente , Adulto , Criança , Pré-Escolar , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , COVID-19/prevenção & controle , Vacinas contra COVID-19/administração & dosagem , Conhecimentos, Atitudes e Prática em Saúde , Hispânico ou Latino/psicologia , Estudos Longitudinais , Pais/psicologia , Inquéritos e Questionários , Estados Unidos/epidemiologia , Hesitação Vacinal/psicologia , Hesitação Vacinal/estatística & dados numéricos
3.
BMC Public Health ; 24(1): 1694, 2024 Jun 25.
Artigo em Inglês | MEDLINE | ID: mdl-38918747

RESUMO

This study examines factors associated with symptoms of loneliness among a sample (n = 213) of mostly Mexican-origin adults at risk of chronic diseases in Southern Arizona's Pima, Yuma, and Santa Cruz counties. It uses baseline data from a community-based participatory research partnership and multinominal logistic regression models. Controlling for chronic diseases and sociodemographic characteristics, perceived social support and hope exhibit negative main effects on loneliness when comparing individuals who experienced loneliness for 5-7 days in the preceding week with those who did not encounter such feelings during the same period (adjusted odds ratio, AOR = 0.49 and 0.47; 95% confidence interval, CI = 0.34-0.73 and 0.29-0.75, respectively). However, when considered together, perceived social support and hope display a positive and statistically significant combined effect on loneliness (AOR = 1.03; 95% CI = 1.01-1.06). Holding all covariates constant, individuals reporting loneliness for 5-7 days exhibit a relative risk ratio of 1.24 (95% CI = 1.06-1.46) for a one-unit increase in physical problem severity compared to those who do not experience loneliness. Moreover, being 65 years old or older (AOR = 0.16, 95% CI = 0.03-0.84), and having been born in Mexico and lived in the US for less than 30 years (AOR = 0.12, 95% CI = 0.02-0.74) are associated with negative main effects on loneliness when comparing individuals who experienced loneliness 1-2, and 5-7 days in the preceding week with those who did not feel loneliness during the same timeframe, respectively. Recognizing the crucial role of loneliness in shaping health outcomes for Mexican-origin adults, our findings underscore the significance of fostering supportive environments that not only enhance well-being but also cultivate robust community bonds within the US-Mexico border region.


Assuntos
Solidão , Americanos Mexicanos , Humanos , Solidão/psicologia , Arizona , Feminino , Masculino , Adulto , Fatores de Risco , Pessoa de Meia-Idade , Americanos Mexicanos/psicologia , Americanos Mexicanos/estatística & dados numéricos , Apoio Social , Idoso , Adulto Jovem , Doença Crônica/psicologia , Pesquisa Participativa Baseada na Comunidade , Modelos Logísticos
4.
Prog Community Health Partnersh ; 18(1): 131-139, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38661834

RESUMO

BACKGROUND: Behavioral models play a key role in identifying pathways to better health and provide a foundation for health promotion interventions. However, behavioral models based in epidemiological research may be limited in relevance and utility in practice. OBJECTIVES: We describe a participatory approach within a community-based participatory research partnership for integrating epidemiological and community perspectives into the application of the sociocultural resilience model (SRM). The SRM posits that cultural processes have a symbiotic relationship with health-promoting social processes, which contribute to the health advantages among Mexicanorigin and other Latinx populations. METHODS: Community action board members engaged with academic partners to interpret and apply the SRM to a community-clinical linkages intervention implemented in the context of three U.S.-Mexico border communities. In a two-day workshop, partners engaged in a series of iterative discussions to reach common definitions and measures for SRM constructs. RESULTS: Partners described daily cultural processes as the food they eat, how they communicate, and a collectivist approach to getting things done. For intervention activities, the partners opted for intergenerational storytelling, sharing of food, and artistic forms of expression. Partners included measures of cultural nuances such as border identity and the complexities that often arise from navigating bicultural norms. CONCLUSIONS: Collaborative approaches within community-based participatory research partnerships can facilitate the adaptation and measurement of conceptual health behavior models in community practice.


Assuntos
Pesquisa Participativa Baseada na Comunidade , Humanos , Pesquisa Participativa Baseada na Comunidade/métodos , Estados Unidos , México/etnologia , Promoção da Saúde/métodos , Promoção da Saúde/organização & administração , Resiliência Psicológica , Americanos Mexicanos/psicologia , Hispânico ou Latino/psicologia , Feminino , Relações Comunidade-Instituição
5.
Am J Case Rep ; 24: e940717, 2023 Aug 26.
Artigo em Inglês | MEDLINE | ID: mdl-37632134

RESUMO

BACKGROUND Wernicke encephalopathy is traditionally associated with chronic alcoholism, nutritional imbalance, prolonged intravenous feeding, hyperemesis, anorexia nervosa, and malabsorption syndromes. We report a case of Wernicke's encephalopathy in a 12-year-old girl with avoidant restrictive food intake disorder. CASE REPORT The patient had lost 45.4 kg of body weight due to self-imposed changes to her diet, before presenting with decreased oral intake for 2-3 weeks, intermittent nausea, crampy epigastric pain, and post-prandial emesis. Her weight on admission was 78.2 kg. She received intravenous fluids of dextrose 5% with normal saline while she initially attempted to eat, but the post-prandial emesis persisted. She developed a fear of vomiting, which led to even more severe food intake restriction. After a week, she began to report double vision and blurred peripheral vision, with physical findings of nystagmus and an ataxic gait. She was empirically started on thiamine after negative neurology workup, with improvement of her gait, blurry vision, and nystagmus. Thiamine deficiency was later confirmed. CONCLUSIONS In patients with large amounts of weight loss presenting with neurological symptoms, Wernicke's encephalopathy must be considered in the differential diagnosis. Avoidant restrictive food intake disorder is rarely reported to cause Wernicke's encephalopathy. To the best of our knowledge, this is the first pediatric case demonstrating that Wernicke encephalopathy can occur in this type of eating disorder and not just in anorexia nervosa.


Assuntos
Transtorno Alimentar Restritivo Evitativo , Beriberi , Deficiência de Tiamina , Encefalopatia de Wernicke , Feminino , Humanos , Criança , Encefalopatia de Wernicke/diagnóstico , Encefalopatia de Wernicke/etiologia , Deficiência de Tiamina/complicações , Deficiência de Tiamina/diagnóstico , Tiamina/uso terapêutico
6.
Artigo em Inglês | MEDLINE | ID: mdl-37372712

RESUMO

Diabetes is the seventh leading cause of death in the United States, and it is particularly problematic among the Latine population. This study employed multivariable logistic regression models to examine how hypertension, depression, and sociodemographics were associated with diabetes in a cross-sectional sample of Mexican-origin adults living in three counties of Southern Arizona. The overall prevalence of diabetes from this primary care sample was 39.4%. Holding covariates at fixed values, individuals having hypertension were 2.36 (95% CI: 1.15, 4.83) times more likely to have diabetes, when compared to individuals not having hypertension. The odds of having diabetes for individuals with ≥12 years of educational attainment were 0.29 (95% CI: 0.14, 0.61) times the corresponding odds of individuals with <12 years of educational attainment. For individuals with depression, the odds of having diabetes for those who were born in Mexico and had <30 years living in the US were 0.04 (95% CI: 0, 0.42) times the corresponding odds of individuals without depression and who were born in the US. Findings suggest clinical and public health systems should be aware of the potential increased risk of diabetes among Mexican-origin adults with hypertension and lower educational attainment.


Assuntos
Diabetes Mellitus , Adulto , Humanos , Arizona/epidemiologia , Estudos Transversais , Diabetes Mellitus/epidemiologia , Diabetes Mellitus/etnologia , Diabetes Mellitus/etiologia , Hipertensão/complicações , Hipertensão/epidemiologia , Americanos Mexicanos/estatística & dados numéricos , México/etnologia , Fatores de Risco , Estados Unidos/epidemiologia , Depressão/complicações , Depressão/epidemiologia , Escolaridade
7.
Artigo em Inglês | MEDLINE | ID: mdl-37297621

RESUMO

Using baseline data from three partnering federally qualified health centers, we examined factors associated with depressive symptoms among Mexican-origin adults at risk of chronic disease living in three counties in Southern Arizona (i.e., Pima, Yuma, and Santa Cruz). Multivariable linear regression models identified correlates of depressive symptoms for this population controlling for sociodemographic characteristics. Among 206 participants, 85.9% were female and 49% were between 45 and 64 years of age. The proportion of depressive symptoms was 26.8%. Low levels of physical pain and high levels of hope and social support were also reported. Physical pain was positively and significantly related to depressive symptoms (ß = 0.22; 95% CI = 0.13, 0.30). Conversely, hope was negatively and significantly associated with depressive symptoms (ß = -0.53; 95% CI = -0.78, -0.29). A better understanding of factors related to depressive symptoms among Mexican-origin adults is necessary to fulfill their mental health needs, as well as to achieve health equity and to eliminate health disparities in the US-Mexico border region.


Assuntos
Depressão , Americanos Mexicanos , Dor , Adulto , Feminino , Humanos , Masculino , Arizona/epidemiologia , Depressão/epidemiologia , Depressão/etnologia , Americanos Mexicanos/psicologia , Americanos Mexicanos/estatística & dados numéricos , México/etnologia , Dor/epidemiologia , Dor/etnologia , Dor/psicologia
8.
Health Educ Behav ; 50(5): 637-646, 2023 10.
Artigo em Inglês | MEDLINE | ID: mdl-35311372

RESUMO

When students feel connected to their school, they experience positive health and academic outcomes. In contrast, school disengagement is a predictor of dropout, delinquency, and substance use. School garden programming has the potential to help children achieve academic outcomes and feel connected to their school. Unfortunately, most school garden research has been conducted with white, affluent study participants. We describe the results of a secondary analysis utilizing data from an evaluation of a university-supported community school garden program (CSGP). Using a cross-sectional survey study design, we examined the impact of school garden programming in Title I schools on primarily Latino/a (Hispanic) elementary student self-reported learning and feelings of school connectedness by comparing students with ≤1 year exposure to those with >1 year. Social cognitive theory formed the conceptual basis for the analysis. Duration of school garden exposure did not have a significant association with self-reported learning or feelings of school connectedness. Regardless of past exposure, fifth-grade students, females, and those who identify as Latino/a (Hispanic) felt that school garden programming improved their learning. Latino/a (Hispanic) students who participate in school garden programming may also feel a greater sense of connection to their teachers and peers at school. Qualitative results demonstrated that most students enjoyed spending time in the garden and indicated that participating in the program helped them learn new things and feel connected to their school. If individuals who may be disadvantaged because of systemic racism, such as Latino/a (Hispanic) students, can benefit from school garden programming, such interventions should be further investigated and prioritized.


Assuntos
Jardins , Instituições Acadêmicas , Feminino , Humanos , Criança , Autorrelato , Estudos Transversais , Jardinagem
9.
Front Public Health ; 10: 944887, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35958854

RESUMO

Background: Vaccine hesitancy in the face of the COVID-19 pandemic is a complex issue that undermines our national ability to reduce the burden of the disease and control the pandemic. The COVID-19 pandemic revealed widening health disparities and disproportionate adverse health outcomes in terms of transmission, hospitalizations, morbidity and mortality among Arizona's Latinx rural, underserved, farmworker, disabled and elderly populations. In March 2021, ~8.1% of those vaccinated were Latinx, though Latinxs make up 32% of Arizona's population. The Arizona Vaccine Confidence Network (AzVCN) proposed to leverage the expertise of the Arizona Prevention Research Center (AzPRC) and the resources of the Mel and Enid Zuckerman College of Public Health (MEZCOPH) Mobile Health Unit (MHU) to identify, implement and evaluate a MHU intervention to increase uptake of COVID-19 vaccines. Methods: The AzVCN focused efforts on Latinx, rural, un/underinsured and farmworker communities in the four Arizona border counties that are at greater risk of COVID-19 morbidity and mortality and may have limited access to vaccination and other essential health services. The AzVCN used listening sessions to create a feedback loop with key stakeholders and critical health care workers to validate barriers/enablers and identify solutions to increase vaccination uptake emerging from the network. The AzVCN also implemented a community-based intervention using community health workers (CHWs) based in a MHU to increase knowledge of the COVID-19 vaccines, reduce vaccination hesitancy and increase vaccination uptake among Latinx rural, un/underinsured and farmworker populations in Southern Arizona. Results: AzVCN outcomes include: identification of enablers and barriers of COVID-19 vaccination in the priority populations; identification of strategies and solutions to address vaccine hesitancy and increase vaccine uptake among priority population; and evidence that the proposed solutions being tested through the AzVCN contribute to increased vaccine uptake among the priority populations. Conclusion: Through these efforts the AzPRC contributed to the CDC's Vaccinate with Confidence Strategy by collaborating with CHWs and other key stakeholders to engage directly with communities in identifying and addressing structural and misinformation barriers to vaccine uptake.


Assuntos
COVID-19 , Equidade em Saúde , Vacinas , Idoso , Arizona , COVID-19/prevenção & controle , Vacinas contra COVID-19 , Agentes Comunitários de Saúde , Humanos , Pandemias
10.
Front Public Health ; 10: 877593, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35812475

RESUMO

In this community case study, we describe the process within an academic-community partnership of adapting UNIDOS, a community health worker (CHW)-led community-clinical linkages (CCL) intervention targeting Latinx adults in Arizona, to the evolving landscape of the COVID-19 pandemic. Consistent with community-based participatory research principles, academic and community-based partners made decisions regarding changes to the intervention study protocol, specifically the intervention objectives, participant recruitment methods, CHW trainings, data collection measures and management, and mode of intervention delivery. Insights from this case study demonstrate the importance of community-based participatory research in successfully modifying the intervention to the conditions of the pandemic and also the cultural background of Latinx participants. This case study also illustrates how a CHW-led CCL intervention can address social determinants of health, in which the pandemic further exposed longstanding inequities along racial and ethnic lines in the United States.


Assuntos
COVID-19 , Pandemias , Adulto , COVID-19/epidemiologia , COVID-19/prevenção & controle , Agentes Comunitários de Saúde , Pesquisa Participativa Baseada na Comunidade/métodos , Humanos , Grupos Raciais , Estados Unidos
11.
Prog Community Health Partnersh ; 16(1): 93-103, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35342114

RESUMO

BACKGROUND: Community-clinical linkages (CCLs) connect public health organizations and health care providers to better support patients. Community health workers (CHWs), representatives from priority populations with special connections to their community, can lead CCLs. OBJECTIVES: Our objective was to learn about how to conduct a CHW-led CCL from the perspectives of those implementing the intervention. METHODS: We conducted focus groups with CHWs and their supervisors and regularly consulted community partners while coding and analyzing data. RESULTS: We learned that CHWs thrive when supported by peers, supervisors, institutions, and researchers. Supervisors- who are new to the CHW role-should consider seeking training in CHW professional development and performance evaluation. Focus group participants agreed that by balancing the strengths and weaknesses of their organization, CHW-led CCLs benefit patients because the collaboration helps them to better manage their health. CONCLUSIONS: Future CHW-led CCL practitioners should consider how to best institutionally support CHWs to maximize benefits for patients.


Assuntos
Agentes Comunitários de Saúde , Pesquisa Participativa Baseada na Comunidade , Agentes Comunitários de Saúde/educação , Grupos Focais , Humanos , México , Saúde Pública
12.
Prev Chronic Dis ; 18: E76, 2021 08 05.
Artigo em Inglês | MEDLINE | ID: mdl-34351845

RESUMO

INTRODUCTION: Compared with their non-Hispanic White counterparts, Latino/a people have limited access to health resources that might improve their emotional well-being. Interventions that prioritize the Latino/a population, address social determinants of health, and decrease health disparities are needed. The objective of this study was to describe a community-clinical linkage intervention led by community health workers (CHWs) in 3 Latino/a populations along the US-Mexico border. METHODS: Researchers at the Arizona Prevention Research Center conducted the Linking Individual Needs to Community and Clinical Services (LINKS) study during 2017-2018. Clinic-based CHWs referred participants to community-based CHWs who met with participants monthly for 6 months to assess participant needs, provide support for emotional well-being, and link them to resources. Two community-based CHWs collaborated to maximize participant care; they also administered an emotional well-being questionnaire at baseline and at 3-month and 6-month follow-up. We estimated changes in emotional well-being outcomes. RESULTS: Scores for social support, perceived hopefulness, and quality-of-life measures among 189 LINKS participants increased significantly during the study period, especially among men and participants with low baseline scores. For each of the 3 outcomes, the standardized change was approximately 0.28 per 3 months of intervention, a decrease of more than half an SD (0.56) during 6 months of follow-up. CONCLUSION: A CHW-led community-clinical linkage intervention can result in positive emotional well-being outcomes. We encourage policy makers, funders, and public health practitioners to further investigate such interventions as a solution to reduce disparities in emotional well-being.


Assuntos
Agentes Comunitários de Saúde , Hispânico ou Latino , Humanos , Masculino , México , Encaminhamento e Consulta , Apoio Social
13.
BMC Health Serv Res ; 21(1): 793, 2021 Aug 11.
Artigo em Inglês | MEDLINE | ID: mdl-34380482

RESUMO

BACKGROUND: Social support plays a critical role in physical and emotional health, making it an important component of community health worker (CHW) health promotion interventions. Different types of support operate in different ways, however, and the relationship between the nature of CHW support and the subsequent health benefit for their clients is not well understood. METHODS: This paper describes an integrated mixed methods study of the emotional, informational, appraisal and tangible support CHWs provided to Latinx community members residing in three US-Mexico border communities. Using a cohort (n = 159) from a CHW community-based intervention, we identify and describe four clusters of social support in which participants are characterized by life situations that informed the types of social support provided by the CHW. We examine the association between each cluster and client perceptions of social support over the 6-month intervention. RESULTS: CHWs provided emotional, appraisal, informational and tangible support depending on the needs of participants. Participants who received higher levels of emotional support from the CHW experienced the greatest post intervention increase in perceived social support. CONCLUSIONS: Study findings suggest that CHWs may be adept at providing non-directive social support based on their interaction with a client rather than a health outcome objective. Health promotion interventions should allow CHWs the flexibility to tailor provision of social support based on their assessment of client needs.


Assuntos
Serviços de Saúde Comunitária , Agentes Comunitários de Saúde , Promoção da Saúde , Humanos , México , Apoio Social
14.
J Med Libr Assoc ; 109(2): 317-322, 2021 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-34285675

RESUMO

BACKGROUND: While writing a scoping review, we needed to update our search strategy. We wanted to capture articles generated by our additional search terms and articles published since our original search. Simultaneously, we strove to optimize project resources by not rescreening articles that had been captured in our original results. CASE PRESENTATION: In response, we created Open Update Re-run Deduplicate (OUR2D2), a computer application that allows the user to compare search results from a variety of library databases. OUR2D2 supports extensible markup language (XML) files from EndNote and comma-separated values (CSV) files using article titles for comparisons. We conducted unit tests to ensure appropriate functionality as well as accurate data extraction and analysis. We tested OUR2D2 by comparing original and updated search results from PubMed, Embase, Clarivate Web of Science, CINAHL, Scopus, ProQuest Dissertation and Theses, and Lens and estimate that this application saved twenty-one hours of work during the screening process. CONCLUSIONS: OUR2D2 could be useful for individuals seeking to update literature review strategies across fields without rescreening articles from previous searches. Because the OUR2D2 source code is freely available with a permissive license, we recommend this application for researchers conducting literature reviews who need to update their search results over time, want a powerful and flexible analysis framework, and may not have access to paid subscription tools.


Assuntos
Computadores , Software , Humanos , PubMed
15.
ACG Case Rep J ; 7(4): e00359, 2020 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-32548189

RESUMO

Dysphagia is an uncommon symptom for celiac disease (CD). Typically, patients with CD present with abdominal pain, diarrhea, steatorrhea, weight loss, growth failure, anemia, or fatigue. We report a case of dysphagia in a pediatric patient with negative celiac serologies and positive histologic findings suspicious for CD. Our patient's dysphagia resolved after being placed on a gluten-free diet. Repeat interval endoscopy on a gluten-free diet to assess for resolution of histological changes confirmed the diagnosis of CD. In patients with dysphagia, CD should be considered in the differential diagnosis despite negative celiac serologies.

16.
ACS Appl Bio Mater ; 2(11): 5154-5163, 2019 Nov 18.
Artigo em Inglês | MEDLINE | ID: mdl-35021458

RESUMO

Conducting polymer coatings on metal electrodes are an efficient solution to improve neural signal recording and stimulation, due to their mixed electronic-ionic conduction and biocompatibility. To date, only a few studies have been reported on conducting polymer coatings on metallic wire electrodes for muscle signal recording. Chronic muscle signal recording of freely moving animals can be challenging to acquire with coated electrodes, due to muscle movement around the electrode that can increase instances of coating delamination and device failure. The poor adhesion of conducting polymers to some inorganic substrates and the possible degradation of their electrochemical properties after harsh treatments, such as sterilization, or during implantation limits their use for biomedical applications. Here, we demonstrate the mechanical and electrochemical stability of the conducting polymer, poly(3,4-ethylenedioxythiophene) (PEDOT) doped with LiClO4, deposited on stainless steel multistranded wire electrodes for invasive muscle signal recording in mice. The mechanical and electrochemical stability was achieved by tuning the electropolymerization conditions. PEDOT-coated and bare stainless steel electrodes were implanted in the neck muscle of five mice for electromyographic (EMG) activity recording over a period of 6 weeks. The PEDOT coating improved the electrochemical properties of the stainless steel electrodes, lowering the impedance, resulting in an enhanced signal-to-noise ratio during in vivo EMG recording compared to bare electrodes.

17.
Ir Vet J ; 71: 24, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30534362

RESUMO

BACKGROUND: Bovine tuberculosis (bTB, caused by infection with Mycobacterium bovis) is endemic in the Irish cattle population, and the subject of a national eradication programme since the late 1950s. During 2014, a substantial area-level bTB outbreak developing in north County Sligo, necessitating the need for an enhanced response. This paper describes this outbreak, the response that was undertaken and some lessons learned. RESULTS: In the north Sligo area between 2014 and 2016, 23 (31.9%) of restricted herds had 4 or more reactors to the single intradermal comparative tuberculin test (SICTT)/animals with bTB lesions disclosed during the restriction, and the majority (55.5%) of test-positive animals were identified as standard reactors to the SICTT. The herds restricted during 2014-16 were typically larger than other herds in the study area and introduced more animals during 2013. M. bovis was also detected in local badgers, but not deer. CONCLUSION: This paper describes a substantial outbreak in north County Sligo over a 3-year period. A coordinated area-based approach was a key feature of the outbreak, and substantial resources were applied to bring the outbreak under control. No definitive source was identified, nor reasons why a substantial number of herds were infected over a relatively short period. A coordinated regional approach was taken, and a number of lessons were learned including the need for urgency, for a team-based approach, for a consistent message when dealing with the public, for an area-based approach, for a degree of flexibility for the breakdown manager, and for molecular tools to assist in answering key questions relating to the source and spread of M. bovis to many herds during this bTB outbreak.

19.
F1000Res ; 6: 614, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28713554

RESUMO

Background: Growth hormone (GH) is known to affect insulin and glucose metabolism.  Blocking its effects in acromegalic patients improves diabetes and glucose metabolism. We aimed to determine the effect of pegvisomant, a GH receptor antagonist, on insulin resistance, endogenous glucose production (EGP) and lipolysis in insulin resistant non-diabetic men.  Methods: Four men between the ages of 18-62 with a BMI of 18-35kg/m 2, with insulin resistance as defined by a HOMA-IR > 2.77, were treated for four weeks with pegvisomant 20 mg daily.  Inpatient metabolic assessments were performed before and after treatment. The main outcome measurements were: change after pegvisomant therapy in insulin sensitivity as measured by hyperinsulinemic euglycemic clamp; and EGP and lipolysis assessed by stable isotope tracer techniques. Results: Insulin like growth factor-1 (IGF-1) concentrations decreased from 134.0 ± 41.5 (mean ± SD) to 72.0 ± 11.7 ng/mL (p = 0.04) after 4 weeks of therapy. Whole body insulin sensitivity index (M/I 3.2 ± 1.3 vs. 3.4 ± 2.4; P = 0.82), as well as suppression of EGP (89.7 ± 26.9 vs. 83.5 ± 21.6%; p = 0.10) and Ra glycerol (59.4 ± 22.1% vs. 61.2 ± 14.4%; p = 0.67) during the clamp were not changed significantly with pegvisomant treatment. Conclusions: Blockade of the GH receptor with pegvisomant for four weeks had no significant effect on insulin/glucose metabolism in a small phase II pilot study of non-diabetic insulin resistant participants without acromegaly.

20.
Asian J Androl ; 18(1): 21-4, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-26208394

RESUMO

Measurement of intratesticular sex steroid concentrations in men informs both the development of male hormonal contraceptives and the understanding of male infertility. Given the challenges of using invasive techniques to measure testicular hormone physiology, our group has used a minimally-invasive fine-needle aspiration technique to measure intratesticular hormones in normal healthy men. Herein, we present a post-hoc analysis of the safety and efficacy of testicular fine-needle aspiration (FNA) completed as part of six clinical trials. From 2001 through 2011, a total of 404 procedures were conducted among 163 research volunteers, 85.9% of which were successful in obtaining sufficient fluid for the measurement of intratesticular steroid concentrations. Pain was the most common side effect, with 36.8% of procedures associated with moderate procedural pain and 4.7% with severe procedural pain. Postprocedural pain was uncommon and abated within a few days. Mild local bruising occurred with 14.9% of procedures. Two serious adverse events (0.5%) required surgical intervention. The risk of an adverse event was not associated with age, body mass index, testicular size, or the volume of fluid aspirated. Testicular FNA to obtain fluid for measurement of intratesticular steroid concentrations frequently causes mild to moderate procedural pain, but serious adverse events occur rarely. Testicular FNA has been instrumental for defining human intratesticular hormone physiology and is a minimally-invasive, safe, effective method for obtaining fluid for research on testicular physiology and pathology.


Assuntos
Biópsia por Agulha , Testículo/metabolismo , Testosterona/metabolismo , Biópsia por Agulha/efeitos adversos , Humanos , Masculino , Dor Pós-Operatória
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA