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AIM: This study aimed to test the propositions using the job demands-resources (JD-R) model for main/moderation/mediation effects of a sense of coherence and practice environment support on mental well-being (anxiety, depression and burnout) outcomes in nurses and midwives in Australia during the COVID-19 pandemic. DESIGN: Cross-sectional quantitative survey. DATA SOURCES: The study was a cross-sectional design using self-report questionnaires reported as per the Reporting of Observational Studies in Epidemiology Guidelines. Following human research ethics approval (2020.ETH.00121) participants were recruited to take part in an online anonymous survey using self-report instruments to test the JD-R model in Australia. RESULTS: 156 participant nurses and midwives experienced anxiety, depression and emotional burnout during COVID-19. While a considerable proportion of participants indicated high levels of emotional exhaustion, their responses showed low levels of depersonalization (detached response to other people) and high levels of personal accomplishment (high levels of work performance and competence). A sense of coherence was a significant protective factor for mental health well-being for the participants, which is to say, high levels of sense of coherence were predictive of lower levels of anxiety, depression and burnout in this study sample. CONCLUSION: It is evident that both nursing and midwifery professions require psychosocial support to preserve their health both in the short and long term. Ensuring individualized tailored support will require a layered response within organizations aimed at individual self-care and collegial peer support. PATIENT OR PUBLIC CONTRIBUTION: There was no patient or public contribution in this study, as the focus was on nurses and midwives.
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AIM: This systematic review aimed to identify the needs and preferences for cancer care services among Australian First Nations people. DESIGN: Integrative review. DATA SOURCES: An integrative review was conducted. A wide range of search terms were used to increase the sensitivity and specificity of the searches in electronic databases. Methodological quality assessment, data extraction, was conducted independently by two reviewers, and a narrative synthesis was conducted. RESULTS: Forty-two studies were included. A total of 2965 Australian First Nations adults, both men and women of various ages across the lifespan, were represented; no First Nations children affected by cancer were represented in the studies. Three themes emerged which included: (1) discrimination, racism and trauma, resulting from colonization, directly impacted First National people's cancer care experience; (2) cultural ways of knowing, being and doing are fundamental to how First Nations people engage with cancer care services; and (3) First Nations people need culturally safe person-centred cancer care services that address practical needs. CONCLUSION: Most participants represented in this review experienced discrimination, racism and trauma, resulting from colonization, which directly negatively impacted Aboriginal peoples' cancer care experience. While the Optimal Cancer Pathway (OCP) was launched in Australia several years ago, people with cancer may continue to experience distressing unmet care needs. PATIENT OR PUBLIC CONTRIBUTION: Our team includes both First Nations people, non-First Nations researchers and healthcare professionals with expertise in cancer care. The researchers employed decolonizing restorative approaches to ensure voice, respect, accountability and reciprocity in this review work. IMPLICATIONS FOR NURSING PRACTICE: Members of the multidisciplinary team including nurses and policymakers should reflect on these findings, ensure that they have up-to-date cultural safety training and stand together with Indigenous and non-Indigenous cancer leaders to take proactive steps to stamp out and dismantle oppression in health, and safely implement the OCP.
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Neoplasias , Atención Dirigida al Paciente , Masculino , Adulto , Niño , Humanos , Femenino , Australia , Neoplasias/terapiaRESUMEN
Individual Placement and Support (IPS) is a long-standing and innovative employment service for individuals with mental illness with dozens of clinical trials demonstrating effectiveness. Little is known, however, about intentional adaptations to IPS, especially those outside of the context of research studies. Using an implementation science framework, we conducted an exploratory study to better understand the characteristics of stakeholder-reported adaptions to IPS, the impetus for their development, and perceived impacts. We conducted qualitative interviews to analyze and describe these adaptations. Numerous adaptations of IPS were found that address the needs of new and underserved populations both within and outside of the mental health field. Programs reported adapting IPS because of the dearth of other evidence-based employment services, to serve diverse populations in need, and based on financial incentives. Benefits of adaptations were weighed against impacts on fidelity. As evidence-based practices (EBPs) are adapted, developers of EBPs should determine how fidelity of a program or service can be assessed or preserved in light of adaptations. This is critical with the increase in different service delivery methods, new populations, new service recipient needs, and new settings in need of EBPs.
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Empleos Subvencionados , Trastornos Mentales , Humanos , Trastornos Mentales/terapia , Trastornos Mentales/psicología , Salud Mental , Motivación , Práctica Clínica Basada en la Evidencia , Rehabilitación Vocacional/métodosRESUMEN
OBJECTIVE: The study followed up with peer support specialists (PSSs) responding to an earlier survey to assess the pandemic's continued employment and personal effects. METHODS: A December 2020 online survey was conducted with respondents to a May 2020 survey. Items on employment status, work tasks, challenges, support, and benefits were included. Responses were analyzed with descriptive and inferential statistics. RESULTS: A total of 496 PSSs completed both surveys. Unemployment remained at 7%. The proportion with full-time employment increased by December, but financial instability also increased. Tasks involving individual support and group facilitation, which had decreased significantly, rebounded somewhat by December, when nearly all PSSs (86%) reported having some new tasks. Job satisfaction remained stable and high. In both surveys, about 75% reported pandemic-related benefits. Symptoms and housing instability among clients increased. CONCLUSIONS: Pandemic-related PSS unemployment was relatively stable, and work tasks evolved. Respondents reported increasing needs among clients, as well as pandemic-related work benefits.
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COVID-19 , Humanos , COVID-19/epidemiología , Pandemias , Estudios Longitudinales , Desempleo , EmpleoRESUMEN
OBJECTIVE: Peer support specialists (PSS) are an integral part of the mental health workforce. The purpose of this study was to better understand how the COVID-19 pandemic affected their employment status and day-to-day work. METHODS: A cross-sectional, online survey was conducted (May-June 2020). Recruitment occurred through the National Association of Peer Specialists and additional snowball sampling. Closed- and open-ended questions sought information about employment status, work tasks, challenges faced by PSS and by individuals they supported, and positive impacts they experienced. RESULTS: A total of 1,280 surveys were analyzed. Nine percent of respondents reported having lost their job as a result of COVID-19. Of these, 65% reported a length of employment of 2 or more years, and 61% reported working 35 hours or less per week. Job tasks changed dramatically, with 73% reporting engagement in new tasks, including increased reliance on technology (N=717), increased coordination of resources (N=123), and COVID-19-related tasks (N=142). Engagement in some support tasks decreased significantly from prepandemic levels, including individual support provision (p<0.001) and group facilitation (p<0.001). Respondents reported significant challenges among individuals they supported, including increased isolation (92%), substance use (67%), housing instability (38%), and food insecurity (64%). Although respondents also reported challenges, satisfaction with organizational and supervisory support was high. Most respondents (73%) reported positive impacts or benefits from the pandemic. CONCLUSIONS: The changing roles and tasks identified in this study have implications for hiring, training, supervising, and supporting peer staff. The peer workforce demonstrated flexibility and commitment to meeting increasing needs.
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COVID-19 , Fuerza Laboral en Salud , Salud Mental , Grupo Paritario , Apoyo Social , Estudios Transversales , Inestabilidad de Vivienda , Humanos , Pandemias , Encuestas y Cuestionarios , Estados UnidosRESUMEN
OBJECTIVE: This study sought to examine perceived barriers to and facilitators of the adoption, implementation, and sustainability of community-based mental health peer support services for criminal justice-involved individuals, also known as "forensic peer support" (FPS). METHODS: Qualitative interviews were conducted with stakeholders (N=14) and peer specialists (N=37) to better understand delivery of peer support services for justice-involved individuals in Pennsylvania. Thematic analysis followed by directed content analysis was used to identify factors in three a priori implementation categories based on the RE-AIM (Reach, Effectiveness, Adoption, Implementation, Maintenance) model: initial facilitators (adoption), barriers (implementation), and facilitators (maintenance) to long-term sustainability. RESULTS: Initial service adoption was facilitated by buy-in from recovery-oriented gatekeepers in the criminal justice system. Unique implementation barriers included the chasm between the orientations of the two systems (recovery vs. punitive) and formal and informal limitations on the employment of individuals with criminal justice system exposure. For services to be sustainable and have an impact over the long term, FPS advocates and workers must develop rapport with on-the-ground employees of the criminal justice system. Funding barriers specific to the criminal justice system limited the adoption, implementation, and maintenance of FPS services. CONCLUSIONS: Although many of the factors that affect FPS service implementation were similar to those identified in the broader peer support literature, important differences must be addressed for successful FPS service delivery. Within the criminal justice system, both policies and norms presented barriers to the expansion of peer support services for justice-involved individuals.
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Consejo , Derecho Penal , Humanos , Grupo Paritario , Pennsylvania , EspecializaciónRESUMEN
The widespread shift towards recovery-oriented mental healthcare has led to the extensive growth of peer-delivered services. Peer support workers draw on lived experience of mental health challenges and service use to provide non-clinical support services. As peer support services have grown, they have also formalized. This mixed-methods study of peer support work in Pennsylvania (USA) explores how peer support has been institutionalized, and identifies the intended impacts and unintended consequences associated with that process. In Pennsylvania, the inclusion of peer support services as a Medicaid reimbursable service, in addition to county level mandates regarding peer support service availability, have served to institutionalize the field. Data include 49 semi-structured interviews conducted with peer support workers (n = 35) and stakeholders (n = 14) in 2016. Qualitative analyses reveal changes to the scope and nature of peer support work, the peer workforce, peer client relationships, and to stigma in the workplace. Despite these changes, peer workers frequently remain underpaid and unable to advance professionally. The institutionalization of peer support serves as a barrier to worker entry and retention and highlights tensions between the consumer-driven origin of the recovery field and the current mental healthcare system. The institutionalization of roles defined by experiential expertise, such as peer support, has the potential to reduce the very centrality of experiential expertise, reproduce social inequalities, and paradoxically impact stigma.
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Trastornos Mentales , Consejo , Atención a la Salud , Humanos , Trastornos Mentales/terapia , Grupo Paritario , PennsylvaniaAsunto(s)
Infecciones por Mycoplasma/diagnóstico , Mycoplasma genitalium/aislamiento & purificación , Enfermedad Inflamatoria Pélvica/microbiología , Mejoramiento de la Calidad , Uretritis/microbiología , Adulto , Auditoría Clínica , Femenino , Humanos , Londres , Masculino , Infecciones por Mycoplasma/microbiología , Servicios de Salud Reproductiva , Salud SexualRESUMEN
OBJECTIVE: Despite calls for increased peer support services for individuals involved with the criminal justice system, little is known about the training, employment, and characteristics of forensic peer specialists (FPSs). Pennsylvania developed the nation's first FPS program and remains at the forefront of the field. This paper responds to three research questions regarding forensic peer support in Pennsylvania, assessing: (a) employment patterns and demographic characteristics; (b) work tasks and sites; and (c) challenges and benefits of working as an FPS. METHOD: Data are drawn from a larger mixed-methods study of forensic peer support in Pennsylvania, including a detailed online survey of 117 FPS-trained workers, followed by 16 qualitative interviews with a subset of survey respondents. RESULTS: While all survey respondents completed forensic peer support training, only 36% (n = 44) have been employed as FPSs. 96% of survey respondents report having used mental health services, compared to 55% reporting past incarceration. FPSs spend the majority of their work time providing individual support to peer clients and work in multiple settings. Additionally, FPSs report both benefits and challenges related to their work. CONCLUSION AND IMPLICATIONS FOR PRACTICE: Study results suggest that FPS characteristics, practices, and work settings simultaneously align with and differ from nonspecialized peer support services. Program developers and advocates should focus attention on expanding employment opportunities, and FPSs with lived experience should be prioritized for these positions. Despite significant implementation barriers, FPSs are passionate about this work and promote the expansion of the field. (PsycInfo Database Record (c) 2020 APA, all rights reserved).
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Empleo/estadística & datos numéricos , Ciencias Forenses , Servicios de Salud Mental/estadística & datos numéricos , Enfermos Mentales/estadística & datos numéricos , Grupo Paritario , Prisioneros/estadística & datos numéricos , Apoyo Social , Especialización/estadística & datos numéricos , Enseñanza/estadística & datos numéricos , Adulto , Femenino , Humanos , Masculino , Encuestas y CuestionariosRESUMEN
Public mental health service users frequently manage multiple health conditions, and are often prescribed multiple medications. While medications are useful tools in treating diagnosed mental illnesses, they bring management challenges and also can carry complex meanings for the individuals taking them. This study utilized a qualitative methodological approach to examine the experience and meaning of polypharmacy among public mental health services users. This sample of service users (n = 26) who were prescribed multiple medications described three distinct types of challenges they faced in managing medications: related to information, material tasks, and self-stigma. Nevertheless, respondents reported creative and resilient strategies to manage these challenges. Findings build on previous literature and reflect the increasing need to focus on challenges related to polypharmacy. Furthermore, findings indicate that low levels of literacy and high levels of material disadvantage, which are common among public mental health service users, complicate the management and meaning of multiple medications.
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Trastornos Mentales , Servicios de Salud Mental , Estudios Transversales , Humanos , Trastornos Mentales/tratamiento farmacológico , Multimorbilidad , Estigma SocialRESUMEN
OBJECTIVES: Routine HIV screening is recommended in those UK hospitals and primary care settings where the HIV prevalence is > 0.2%. For hepatitis B virus (HBV) and hepatitis C virus (HCV), however, testing is targeted at at-risk groups. We investigated the prevalence of these blood-borne viruses (BBVs) during a routine testing pilot in UK Emergency Departments (EDs). METHODS: During the "Going Viral" campaign (13-19 October 2014), nine UK EDs in areas of high HIV prevalence offered routine tests for HIV, HBV and HCV to adults having blood taken as part of routine care. Patients who tested positive were linked to care. RESULTS: A total of 7807 patients had blood taken during their ED visit; of these, 2118 (27%) were tested for BBVs (range 9-65%). Seventy-one BBV tests were positive (3.4%) with 32 (45.1%) new diagnoses. There were 39 HCV infections (15 newly diagnosed), 17 HIV infections (six newly diagnosed), and 15 HBV infections (11 newly diagnosed). Those aged 25-54 years had the highest prevalence: 2.46% for HCV, 1.36% for HIV and 1.09% for HBV. Assuming the cost per diagnosis is £7, the cost per new case detected would be £988 for HCV, £1351 for HBV and £2478 for HIV. CONCLUSIONS: In the first study in the UK to report prospectively on BBV prevalence in the ED, we identified a high number of new viral hepatitis diagnoses, especially hepatitis C, in addition to the HIV diagnoses. Testing for HIV alone would have missed 54 viral hepatitis diagnoses (26 new), supporting further evaluation of routine BBV testing in UK EDs.
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Sangre/virología , Infecciones por VIH/diagnóstico , Hepatitis B/diagnóstico , Hepatitis C/diagnóstico , Tamizaje Masivo/métodos , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Diagnóstico Precoz , Servicio de Urgencia en Hospital , Femenino , Infecciones por VIH/economía , Infecciones por VIH/epidemiología , Hepatitis B/economía , Hepatitis B/epidemiología , Hepatitis C/economía , Hepatitis C/epidemiología , Humanos , Masculino , Persona de Mediana Edad , Proyectos Piloto , Prevalencia , Estudios Prospectivos , Reino Unido/epidemiología , Adulto JovenRESUMEN
Exclusion criteria for HIV treatment-naïve drug trials can be stringent and selection bias exists, making it difficult to extrapolate results into the 'real world' clinical situation. We aim to compare the demographics, virological outcomes and psychosocial complexity in adult HIV-infected treatment-naïve patients from our cohort initiating combination antiretroviral therapy (cART) in research trials versus standard clinics. In our unit from 2006 to 2011, 1202 standard clinic and 69 research trial patients initiated cART; every eighth standard clinics patient was included to create a standard clinics:research trials patient ratio of 2:1. Notes were retrospectively reviewed for patient demographics, attendance rates and virological outcomes. Data from 221 antiretroviral-naïve patients starting cART were analysed: 152 standard clinic patients and 69 from research trials. In the research trials group, there was an overrepresentation of men (p = 0.041), men who have sex with men (p < 0.001), patients of white ethnicity (p = 0.01), employed patients (p = 0.01) and patients using excessive alcohol (p = 0.02). There was equal representation of drug use, depression and referral to psychology, psychiatry and social work in both groups. The research trials group at baseline had significantly higher CD4 counts (p < 0.001), lower viral loads (p = 0.01) and more patients achieved undetectable viral loads at three (p < 0.001), six (p < 0.001) and 24 months (p = 0.033). There is a prevailing common preconception that participants in clinical trials are uncomplicated, unlike their 'real-life' counterparts. We demonstrated important similarities in psychosocial complexity as well as differences in demographics and virological outcomes in trial and non-trial patients. Clinicians need to be aware of these discrepancies to ensure the facilitation of a heterogeneous population participating in research trials.
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Fármacos Anti-VIH/uso terapéutico , Terapia Antirretroviral Altamente Activa , Infecciones por VIH/tratamiento farmacológico , VIH-1/efectos de los fármacos , Evaluación de Resultado en la Atención de Salud , Adulto , Instituciones de Atención Ambulatoria , Recuento de Linfocito CD4 , Ensayos Clínicos como Asunto , Femenino , Humanos , Londres , Masculino , Persona de Mediana Edad , Sujetos de Investigación , Estudios Retrospectivos , Carga ViralRESUMEN
An unlinked anonymous study was conducted to estimate the prevalence of hepatitis C virus (HCV) infection in emergency department (ED) attendees at a London Hospital. Nine hundred and ninety-seven samples collected over a 12-day period were tested for HCV antibody (Ab) and reactive samples were further tested for HCV RNA. The HCV seroprevalence was 2·6% (26/997) with 1·2% (12/997) HCV RNA positive. A peak HCV RNA-positive prevalence of 4·8% (3/63) was found in males aged 35-44 years, this was compared to 0% (0/136) in males aged <35 years (P = 0·0614) and 1·4% (4/278) in males aged ⩾45 years (P = 0·2415). Assuming the cost for HCV Ab is £6 and HCV RNA is £40 per test, screening ED attendees aged 25-54 years would cost £360 per viraemic infection and identify 82% of those who were HCV RNA positive, yielding the most favourable cost/benefit ratio. HCV screening of ED attendees aged 25-54 years in this population could be an effective way of identifying patients and limit onward transmission.
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Servicio de Urgencia en Hospital , Hepatitis C/epidemiología , Adulto , Femenino , Anticuerpos contra la Hepatitis C/sangre , Humanos , Londres/epidemiología , Masculino , Tamizaje Masivo , Persona de Mediana Edad , Prevalencia , ARN Viral/sangreRESUMEN
Taking medications are complex symbolic acts, infused with diverse meanings regarding body and identity. This article focuses on the meanings of medications for older Puerto Ricans living on the United States mainland, a population experiencing stark health disparities. We aim to gain an understanding of the way multiple cultural and personal meanings of medications are related to and integrated in identity, and to understand how they are situated within Puerto Rican culture, history and circumstance on the US mainland. Data is drawn from thirty qualitative interviews, transcribed and translated, with older Puerto Ricans living on mainland United States. Thematic Analysis indicated four prevalent themes: embodiment of medication use; medications redefining self through the fabric of daily life; healthcare experience defined through medication; and medicine dividing the island and the mainland. While identity is impacted by experience of chronic illness, the experience of medication prescription and consumption is further related to the construction of the sense of self in distinct ways. For these individuals, medication use captures the dilemma of immigration. While cultural belonging and well-being remains on the island of Puerto Rico, the mainland hosts both easier access to and excess reliance on medication.
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Utilización de Medicamentos/estadística & datos numéricos , Estado de Salud , Hispánicos o Latinos/psicología , Aceptación de la Atención de Salud/etnología , Medicamentos bajo Prescripción/administración & dosificación , Anciano , Cultura , Femenino , Humanos , Entrevistas como Asunto , Masculino , Persona de Mediana Edad , Percepción , Puerto Rico/etnología , Estados Unidos/epidemiologíaRESUMEN
This study addresses criminal victimization and contact with police among older Puerto Ricans living in Northeastern United States. Framing their experiences within the context of immigration, we assess the role that acculturation and perceived stress play on Puerto Rican crime and victimization. Data from the Boston Puerto Rican Health Study (BPRHS; N = 1,504) were analyzed using multiple logistic regressions. The experience of criminal victimization by Puerto Ricans is associated with higher educational attainment, increased perceived stress, and also with psychological acculturation. Contact with police is associated with linguistic, but not psychological, acculturation. Our findings give strength to the argument that exposure to crime and the criminal justice system increases with acculturation and that this argument is relevant to Puerto Ricans. Thus, the association between acculturation, criminal victimization, and police contact depends on the conceptualization of acculturation used. The relationship between stress, acculturation, and crime among Latinos is complex and warrants further assessment.
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Puerto Rican adults in the United States mainland live with socioeconomic and health disparities. To understand their contextual experience of aging, we interviewed participants in the Boston Puerto Rican Health Study. Through a Thematic Analysis we identify themes and tensions: normalization and acceptance of aging; gratitude; the importance of aging within social networks; longing to return to Puerto Rico at older age. We address the tensions between 'acceptance' and fatalismo as a cultural belief, and a function of structural barriers. The experience of aging is discussed in the context of Puerto Rico's history and continued dependence on the United States.
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Envejecimiento/etnología , Actitud Frente a la Salud/etnología , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Puerto Rico/etnología , Investigación Cualitativa , Estados Unidos/etnologíaRESUMEN
Fragile X syndrome (FXS), the most common inherited form of intellectual disability and prevailing known genetic basis of autism, is caused by an expansion in the Fmr1 gene that prevents transcription and translation of fragile X mental retardation protein (FMRP). FMRP binds to and controls translation of mRNAs downstream of metabotropic glutamate receptor (mGluR) activation. Recent work shows that FMRP interacts with the transcript encoding striatal-enriched protein tyrosine phosphatase (STEP; Ptpn5). STEP opposes synaptic strengthening and promotes synaptic weakening by dephosphorylating its substrates, including ERK1/2, p38, Fyn and Pyk2, and subunits of N-methyl-d-aspartate (NMDA) and AMPA receptors. Here, we show that basal levels of STEP are elevated and mGluR-dependent STEP synthesis is absent in Fmr1(KO) mice. We hypothesized that the weakened synaptic strength and behavioral abnormalities reported in FXS may be linked to excess levels of STEP. To test this hypothesis, we reduced or eliminated STEP genetically in Fmr1(KO) mice and assessed mice in a battery of behavioral tests. In addition to attenuating audiogenic seizures and seizure-induced c-Fos activation in the periaqueductal gray, genetically reducing STEP in Fmr1(KO) mice reversed characteristic social abnormalities, including approach, investigation and anxiety. Loss of STEP also corrected select nonsocial anxiety-related behaviors in Fmr1(KO) mice, such as light-side exploration in the light/dark box. Our findings indicate that genetically reducing STEP significantly diminishes seizures and restores select social and nonsocial anxiety-related behaviors in Fmr1(KO) mice, suggesting that strategies to inhibit STEP activity may be effective for treating patients with FXS.
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Conducta Animal/fisiología , Proteína de la Discapacidad Intelectual del Síndrome del Cromosoma X Frágil/genética , Proteínas Tirosina Fosfatasas no Receptoras/genética , Animales , Conducta de Elección/fisiología , Modelos Animales de Enfermedad , Proteína de la Discapacidad Intelectual del Síndrome del Cromosoma X Frágil/metabolismo , Hipocampo/metabolismo , Ratones , Ratones Noqueados , Actividad Motora/fisiología , Neuronas/metabolismo , Proteínas Tirosina Fosfatasas no Receptoras/metabolismo , Proteínas Proto-Oncogénicas c-fos/metabolismo , Receptores de Glutamato Metabotrópico/genética , Receptores de Glutamato Metabotrópico/metabolismo , Predominio Social , Sinaptosomas/metabolismoRESUMEN
A multistate outbreak of listeriosis occurred in the United States in 1998 with illness onset dates between August and December. The outbreak caused illness in 108 persons residing in 24 states and caused 14 deaths and four miscarriages or stillbirths. This outbreak was detected by public health officials in Tennessee and New York who observed significant increases over expected listeriosis cases in their states. Subsequently, the Centers for Disease Control and Prevention (CDC) began laboratory characterization of clinical isolates of Listeria monocytogenes by serotyping and restriction fragment length polymorphism analysis using pulsed-field gel electrophoresis (PFGE). For the purpose of this investigation, outbreak-related isolates were defined as those that had a specific AscI-PFGE pattern and indistinguishable or highly similar (no more than 2 band difference in 26 bands) ApaI-PFGE patterns when their DNA was restricted by AscI and ApaI restriction enzymes. Timely availability of molecular subtyping results enabled epidemiologists to separate outbreak cases from temporally associated sporadic cases in the same geographic areas and facilitated the identification of contaminated hot dogs manufactured at a single commercial facility as the source of the outbreak. During the investigation of this outbreak, a standardized protocol for subtyping L. monocytogenes by PFGE was developed and disseminated to public health laboratories participating with CDC's PulseNet network; these laboratories were requested to begin routine PFGE subtyping of L. monocytogenes.
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Brotes de Enfermedades , Listeria monocytogenes/genética , Listeria monocytogenes/aislamiento & purificación , Listeriosis/epidemiología , Productos de la Carne/microbiología , Animales , Bovinos , Pollos , Electroforesis en Gel de Campo Pulsado/métodos , Humanos , Listeria monocytogenes/clasificación , Polimorfismo de Longitud del Fragmento de Restricción , Mapeo Restrictivo , Serotipificación , Pavos , Estados Unidos/epidemiologíaRESUMEN
The purpose of this study was to identify the hard tissue formed early in experimental pulp exposures capped with mineral trioxide aggregate (MTA) or bone morphogenetic protein (BMP)-7 using dentin sialoprotein (DSP) as a marker. The pulps of 35 maxillary first, second, and third molar teeth from 10 male rats were experimentally exposed. The pulps were capped with MTA alone as a pulp-capping agent and final restoration or with BMP-7 followed by restoration with MTA. Five teeth with class I occlusal preparations, no exposure, and no restoration served as positive controls. Five teeth that received pulp exposures and no restoration served as negative controls. Five untreated third molars served as additional controls. The animals were killed at 2 weeks. The specimens were prepared and evaluated histologically and with immunohistochemistry using polyclonal antibodies raised against rat DSP. Pulps capped with MTA formed hard tissue that demonstrated significantly more immunostaining for DSP compared with BMP-7 (p = 0.0031). MTA-capped pulps also showed significantly more complete bridge formation compared with BMP-7 (p = 0.0008). Pulps capped with BMP-7 demonstrated a hard tissue that was bone-like in appearance and devoid of DSP staining.