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The utilization of genetics in medical care has enhanced the utility of precision medicine and hence increased the need for clinical genetic services. These services have reduced the costs and expanded the availability of genetic testing, but their use is limited in certain populations. This study explores the access to clinical genetic services for Michigan patients referred to a genetics clinic on the western side of the state. Factors included the travel distance (miles), wait time for appointment (days from the referral date to the date of first appointment), population demographics, and cultural characteristics. A retrospective record review of all aged patients (n = 568) referred to a genetics clinic in 2018 demonstrated that all patients were insured (100%), of which majority were white-non-Hispanic (90.7%), more than half were < 10 years of age at referral (53.3%), and most of them kept their first appointment (93.5%). Our analysis showed that the wait time was associated with referral non-compliance, p < 0.01. Adjusting for all variables, for each additional day in wait time, patients had 1% increased risk of not seeking clinical genetic services (OR = 1.01, 90% CI [1.01, 1.02]). Policies to encourage genetic service utilization and improve equitable access to precision health are needed. An opportunity exists for strategies that broaden and add diverse populations to those receiving genetic services.
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ABSTRACT: Damage-control resuscitation in the care of critically injured trauma patients aims to limit blood loss and prevent and treat coagulopathy by combining early definitive hemorrhage control, hypotensive resuscitation, and early and balanced use of blood products (hemostatic resuscitation) and the use of other hemostatic agents. This clinical protocol has been developed to provide evidence-based recommendations for optimal damage-control resuscitation in the care of trauma patients with hemorrhage.
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Trastornos de la Coagulación Sanguínea , Hemostáticos , Cirujanos , Heridas y Lesiones , Adulto , Humanos , Hemorragia/etiología , Hemorragia/prevención & control , Trastornos de la Coagulación Sanguínea/etiología , Trastornos de la Coagulación Sanguínea/terapia , Resucitación/métodos , Protocolos Clínicos , Heridas y Lesiones/complicaciones , Heridas y Lesiones/cirugíaRESUMEN
Wildlife rehabilitation is a critical part of animal welfare that contributes to species conservation. Despite the resources that go into rehabilitation, how animals fare after release from care is unknown. This is particularly true for cryptic arboreal species where specialist diets in care and low detectability in the wild present challenges for both care and post-release monitoring. We evaluated post-release outcomes for koalas and assessed if koalas were fed appropriately while in care. We monitored 36 koalas that had experienced one of three categories of medical intervention (none, minor, major) during rehabilitation. We examined the drivers of (i) koala survival and (ii) movements post-release, and (iii) evaluated variation between the species of browse fed in care versus browse selected by koalas in-situ. Overall, the post release survival rate of koalas was 58.5%, with only koalas that received medical intervention experiencing mortality. A critical threshold for mortality occurred at two weeks post-release and mortality was related to the measurable indicators of low body condition and poor climbing ability at time of release. In the month following their release, animals translocated furthest from their capture point moved the furthest. There was poor overlap between the tree species that koalas were fed in care and those they utilized post-release. We provide recommendations to address critical gaps in rehabilitation practices, as well as priorities for monitoring animals post-release to improve outcomes for arboreal folivores.
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Phascolarctidae , Árboles , Animales , Animales Salvajes , Restauración y Remediación AmbientalRESUMEN
Many past studies found parental monitoring and involvement were associated with reductions in delinquency and substance use among adolescents. However, we do not yet fully understand how the COVID-19 crisis affected parenting practices, nor the corresponding effects for juvenile delinquency and substance use. The study incorporated a repeated cross-sectional design with data drawn from two samples of Pennsylvania parents with teenage children. The first sample completed a web survey about parental monitoring in late 2019. The second completed a similar web survey with additional questions about COVID-19 in February 2021. The results indicated little association between COVID-related financial hardship and parental depression, nor between COVID-related financial hardship and parenting practices. While parents reported high levels of depressive symptoms during the pandemic, these appeared largely unrelated to parenting practices. There were few changes in parenting practices, on average, from before to during the pandemic. Most parents reported that their child's behavior had not worsened during the pandemic.
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BACKGROUND: Morbidity and Mortality (M&M) conferences allow clinicians to review adverse events and identify areas for improvement. There are few reports of structured M&M conferences in low- and middle-income countries and no report of collaborative efforts to standardize them. METHODS: The present study aims to gather general surgeons representing most of Peru's urban surgical care and, in collaboration, with trauma quality improvement experts develop a M&M conferences toolkit with the expectation that its diffusion impacts their reported clinical practice. Fourteen general surgeons developed a toolkit as part of a working group under the auspices of the Peruvian General Surgery Society. After three years, we conducted an anonymous written questionnaire to follow-up previous observations of quality improvement practices. RESULTS: A four-component toolkit was developed: Toolkit component #1: Conference logistics and case selection; Toolkit component #2: Documenting form; Toolkit component #3: Presentation template; and Toolkit component #4: Code of conduct. The toolkit was disseminated to 10 hospitals in 2016. Its effectiveness was evaluated by comparing the results of surveys on quality improvement practices conducted in 2016, before toolkit dissemination (101 respondents) and 2019 (105 respondents). Lower attendance was reported by surgeons in 2019. However, in 2019, participants more frequently described "improve the system" as the perceived objective of M&M conferences (70.5% vs. 38.6% in 2016; p < 0.001). CONCLUSION: We established a toolkit for the national dissemination of a standardized M&M conference. Three years following the initial assessment in Peru, we found similar practice patterns except for increased reporting of "system improvement" as the goal of M&M conferences.
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Humanos , PerúRESUMEN
BACKGROUND: The first and most recent nationwide audit of palliative care services in Uganda was conducted in 2009. Since then, Uganda has made great strides in palliative care development, including policy, education, and services implementation. This study provides an overview of the availability of palliative care services in the country and the challenges and gaps in Uganda prior to the global COVID-19 pandemic. This lays the foundation for better understanding the challenges and changes needed to support palliative care development and access in the wake of the pandemic. METHODS: We conducted a descriptive quantitative study of secondary data on nationwide morphine distribution, collated a list of accredited facilities, and analyzed key palliative care indicators collected through the mHealth surveillance project present at a subset of accredited facilities. Descriptive statistical analysis involved non-parametric tests using SPSS, mapping geographical distribution of available palliative care services using Geographic Information Systems software, and identification of challenges from the subset of accredited facilities. RESULTS: There were 226 accredited palliative care facilities across Uganda's 135 districts in 2020. Thirty districts lacked any accredited palliative care facility. The estimated population coverage was 88.5%. The majority (68.1%) of accredited facilities were public, and private facilities received slightly more pain-relieving morphine. There was an alternating trend in the volumes of morphine delivered to public and private facilities. More than a third of the patients were diagnosed with non-communicable diseases, highlighting their significance alongside cancer and HIV/AIDS as conditions requiring palliative care. Palliative care accredited facilities offered six types of services: outreach, home visits, psychosocial, legal, bereavement, and spiritual support, but only for an average of 7 months a year due to lack of facilitation and transportation. CONCLUSION: Palliative care in Uganda developed in quality, volume, and geographic coverage since 2009. The shift in palliative care patients' primary diagnosis from HIV/AIDS to non-communicable diseases marks an important epidemiologic transition. Although accredited facilities are present in most administrative districts, more research is needed to evaluate the actual accessibility of these services. The existing services, both private and public, are limited by the amount of pain-relieving morphine, financial and transport resources. More quality data collected on key palliative care indicators is needed into geographical accessibility of palliative care services, morphine availability trends, and patient diagnoses in order to improve the provision of palliative care in Uganda.
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COVID-19 , Infecciones por VIH , Enfermedades no Transmisibles , COVID-19/epidemiología , Infecciones por VIH/epidemiología , Accesibilidad a los Servicios de Salud , Humanos , Morfina , Enfermedades no Transmisibles/epidemiología , Dolor/epidemiología , Cuidados Paliativos , Pandemias , Uganda/epidemiologíaRESUMEN
The 7th International African Palliative Care Conference and the 4th African Ministers of Health Meeting were held in Kampala from the 24th to 26th August 2022. The theme of the conference - Palliative Care in a Pandemic - reflected the reality of palliative care provision on the continent, and the experience of patients and providers over the past 2 years. It was hosted by the African Palliative Care Association and the Worldwide Hospice Palliative Care Alliance with co-sponsors being the International Children's Palliative Care Network, the International Association of Hospice and Palliative Care, Global Partners in Care and Palliative care in Humanitarian Aid Situations and Emergencies. The conference was held in Kampala as a hybrid event, with a mix of in-person, pre-recorded and virtual presentations. The African Ministers of Health Meeting held on the 24th August was attended by delegates from 25 Ministries of Health, with 92 participants in-person and 122 attending virtually. Hosted by the Minister of State for Primary Health Care in Uganda, the participants at the meeting endorsed a Declaration on Palliative Care in a Pandemic. The main conference, held on the 25th and 26th August, was attended by 334 delegates from 40 countries, 199 (60%) of whom attended in-person. Key themes discussed throughout the conference included: contagious compassion; building a business case and evidence for palliative care in Africa; palliative care policy, funding and sustainability; the importance of collaboration and global partnerships; palliative care for all ages, children through to the elderly, and all conditions; the need to be innovative and creative, embracing technology; and a feeling of hopefulness in the future of palliative care in the region as we go forward together. The impact of the pandemic has been significant on everyone. Despite this, and the limitations imposed by the pandemic, the African palliative care community has come through it stronger, is committed to continuing the development of palliative care across the region, working together and is hopeful for the future.
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AIM: This study investigated how COVID-19 impacted the physical activity and sports participation of Pennsylvania residents and their children. SUBJECT AND METHODS: Data were collected through an online survey of 525 Pennsylvania residents with a child between the ages of 3 and 17. Data were collected in October 2020. RESULTS: Nearly a third of respondents reported a decrease in their physical activity. Hispanics were more likely than non-Hispanics to report a decrease in their physical activity. Older children were more likely to have a decrease in physical activity. Children in homes with more children present were less likely to see such a decline. Men were more likely than women to see COVID-19 as a barrier to physical activity for themselves and their child. CONCLUSIONS: The results of this study underscore the profound impact of the COVID-19 pandemic on our health as a nation. Exercise, in all forms, plays a key role in overall health, weight, and disease resistance. It remains unclear how declines in physical activity might persist over time, and among whom.
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In this study, I document how members of the public perceive active shooter risk in their communities and their perceptions of the effectiveness of common efforts to prevent and respond to active shooters. I further investigate how news media exposure shapes these perceptions. I applied Protection Motivation Theory (PMT) to explore how perceptions and news media exposure might shape self-protective actions taken by individuals and their households. Data were obtained in 2019 from a cross-sectional, state-representative sample of 668 Pennsylvania adults who completed a web survey. Those who perceived higher community active shooter risk and those who felt community prevention and preparation efforts were effective were more likely to take self-protective steps themselves. Increased news exposure through apps, social media, family and friends was associated with increased perceived risk and effectiveness of prevention and preparation strategies. These results suggest that self-selected news and news through personal ties are linked to active shooter perceptions while other news mediums, like television or radio broadcasts, are not. News exposure was largely unrelated to self-protection. Those who felt community efforts were effective in prevention or preparation, however, were more likely to take self-protective actions. This finding indicates that community efforts may be more influential than news media in directing personal behavior.
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Medios de Comunicación de Masas , Medios de Comunicación Sociales , Adulto , Estudios Transversales , Humanos , Pennsylvania , PercepciónRESUMEN
This study investigated the role of workplace preparedness actions in employee perceptions of workplace risk, workplace preparedness, and personal self-efficacy in an active shooter event. Data were drawn from an online, state representative survey of 668 Pennsylvania residents in 2019. Nearly 40% of employees reported their workplaces had not taken any preparedness actions. Having a workplace take a greater number of preparedness actions was associated with increased self-efficacy and increased perceptions of workplace preparedness, but also an increase in perceived risk. Males and gun owners perceived lower levels of workplace risk and reported substantially higher self-efficacy. However, associations between workplace efforts and self-efficacy differed from those for perceived workplace preparedness. Associations with firearm policy and the presence of security staff also differed for the two outcomes.
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Actitud , Salud Laboral , Autoeficacia , Lugar de Trabajo , Heridas por Arma de Fuego , Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Pennsylvania , Encuestas y Cuestionarios , Adulto JovenRESUMEN
BACKGROUND: A fundamental goal of continuous process improvement programs is to evaluate and improve the ratio of actual to expected mortality. To study this, we examined contributors to error-associated deaths during two consecutive periods from 1996 to 2004 (period 1) and 2005 to 2014 (period 2). METHODS: All deaths at a level I trauma center with an anticipated probability of death less than 50% and/or identified through process improvement committees were examined. Demographics were assessed for trend only because period 1 data were only available in median and interquartile range. Each death was critically appraised to identify potential error, with subsequent classification of error type, phase, cause, and contributing cognitive processes, with comparison of outcomes made using χ test of independence. RESULTS: During period 1, there were a total of 44,401 admissions with 2,594 deaths and 64 deaths (2.5%) associated with an error, compared with 60,881 admissions during period 2 with 2,659 deaths and 77 (2.9%) associated with an error. Deaths associated with an error occurred in younger and less severely injured patients in period 1 and were likely to occur during the early phase of care, primarily from failed resuscitation and hemorrhage control. In period 2, deaths occurred in older more severely injured patients and were likely to occur in the later phase of care primarily because of respiratory failure from aspiration. CONCLUSION: Despite injured patients being older and more severely injured, error-associated deaths during the early phase of care that was associated with hemorrhage improved over time. Successful implementation of system improvements resolved issues in the early phase of care but shifted deaths to later events during the recovery phase including respiratory failure from aspiration. This study demonstrates that ongoing evaluation is essential for continuous process improvement and realignment of efforts, even in a mature trauma system. LEVEL OF EVIDENCE: Therapeutic/Care Management, level IV.
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Manejo de la Vía Aérea , Hemorragia/terapia , Errores Médicos/clasificación , Resucitación , Heridas y Lesiones/mortalidad , Heridas y Lesiones/terapia , Adulto , Anciano , Causas de Muerte , Femenino , Hemorragia/mortalidad , Hospitalización/estadística & datos numéricos , Humanos , Puntaje de Gravedad del Traumatismo , Masculino , Persona de Mediana Edad , Centros Traumatológicos , Estados Unidos/epidemiología , Adulto JovenRESUMEN
BACKGROUND: Controversial findings have been reported in human and animal studies regarding the influence of n-6 (ω-6) to n-3 (ω-3) fatty acid ratios on obesity and health. Two confounding factors may be related to interactions with other dietary lipid components or sex-specific differences in fatty acid metabolism. OBJECTIVE: This study investigated main and interactive effects of total dietary lipid, ratio of n-6 to n-3 fatty acids, and sex on growth, adiposity, and reproductive health in wild-type zebrafish. METHODS: Male and female zebrafish (3 wk old) were fed 9 diets consisting of 3 ratios of n-6 to n-3 fatty acids (1.4:1, 5:1, and 9.5:1) varied within 3 total lipid amounts (80, 110, and 140 g/kg) for 16 wk. Data were then collected on growth, body composition (determined by chemical carcass analysis), and female reproductive success (n = 32 breeding events/diet over 4 wk). Main and interactive effects of dietary lipid and sex were evaluated with regression methods. Significant differences within each dietary lipid component were relative to the intercept/reference group (80 g/kg and 1.4:1 ratio). RESULTS: Dietary lipid and sex interacted in their effects on body weight (P = 0.015), total body length (P = 0.003), and total lipid mass (P = 0.029); thus, these analyses were stratified by sex. Female spawning success decreased as dietary total lipid and fatty acid ratio increased (P = 0.030 and P = 0.026, respectively). While total egg production was not associated with either dietary lipid component, females fed the 5:1 ratio produced higher proportions of viable embryos compared with the 1.4:1 ratio [median (95% CI): 0.915 (0.863, 0.956) vs 0.819 (0.716, 0.876); P < 0.001]. CONCLUSIONS: Further characterization of dietary lipid requirements will help define healthy balances of dietary lipid, while the sex-specific responses to dietary lipid identified in this study may partially explain sex disparities in the development of obesity and its comorbidities.
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BACKGROUND: Despite rapid upscale of insecticide-treated nets (ITNs) and indoor residual spraying (IRS), malaria remains a major source of morbidity and mortality in Zambia. Uptake and utilization of these and novel interventions are often affected by knowledge, attitudes and practices (KAP) amongst persons living in malaria-endemic areas. The aims of this study were to assess malaria KAP of primary caregivers and explore trends in relation to ITN use, IRS acceptance and mosquito density in two endemic communities in Luangwa and Nyimba districts, Zambia. METHODS: A cohort of 75 primary caregivers were assessed using a cross-sectional, forced-choice malaria KAP survey on ITN use, IRS acceptance and initial perception of a novel spatial repellent (SR) product under investigation. Entomological sampling was performed in participant homes using CDC Miniature Light Traps to relate indoor mosquito density with participant responses. RESULTS: Ninety-nine percent of participants cited bites of infected mosquitoes as the route of malaria transmission although other routes were also reported including drinking dirty water (64%) and eating contaminated food (63%). All caregivers agreed that malaria was a life-threatening disease with the majority of caregivers having received malaria information from health centers (86%) and community health workers (51%). Cumulatively, self-reported mosquito net use was 67%. Respondents reportedly liked the SR prototype product but improvements on color, shape and size were suggested. Overall, 398 mosquitoes were captured from light-trap collections, including 49 anophelines and 349 culicines. Insecticide treated nets use was higher in households from which at least one mosquito was captured. CONCLUSIONS: The current study identified misconceptions in malaria transmission among primary caregivers indicating remaining knowledge gaps in educational campaigns. Participant responses also indicated a misalignment between a low perception of IRS efficacy and high stated acceptance of IRS, which should be further examined to better understand uptake and sustainability of other vector control strategies. While ITNs were found to be used in study households, misperceptions between presence of mosquitoes and bite protection practices did exist. This study highlights the importance of knowledge attitudes and practice surveys, with integration of entomological sampling, to better guide malaria vector control product development, strategy acceptance and compliance within endemic communities.
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Cuidadores/psicología , Conocimientos, Actitudes y Práctica en Salud , Malaria/prevención & control , Población Rural , Adulto , Cuidadores/estadística & datos numéricos , Estudios de Cohortes , Estudios Transversales , Femenino , Vivienda , Humanos , Mosquiteros Tratados con Insecticida/estadística & datos numéricos , Insecticidas/administración & dosificación , Malaria/epidemiología , Control de Mosquitos/métodos , Población Rural/estadística & datos numéricos , Zambia/epidemiologíaRESUMEN
OBJECTIVES: This study aimed to describe the development and implementation strategies used in the collaboration between a patient-centered medical home (PCMH) and a grocery pharmacy chain and to evaluate the effectiveness of a community pharmacist's clinical integration in reducing hemoglobin A1c levels at clinic and patient levels. SETTING: The Kroger Co and Catholic Health Initiative St. Vincent. PRACTICE DESCRIPTION: The Kroger Co is a large grocery store that operates 27 pharmacies in the state of Arkansas, with 20 locations in the central Arkansas area. PCMH is part of a large health system in central Arkansas with 10 primary-care clinics in the area. PRACTICE INNOVATION: With the transition to value-based payment models, pharmacists are being utilized in settings outside of the pharmacy. This project demonstrates a partnership between a community pharmacy and PCMH. The community pharmacist spent 20 h/week in the PCMH providing medication therapy and disease state management services. Services were focused on patients with uncontrolled diabetes. EVALUATION: Descriptive statistics were used to describe the distribution of the pharmacists' time. A patient-level pre-post analysis of the mean changes in hemoglobin A1c (HbA1c) was conducted for patients who interacted directly with the pharmacist. A clinic-level analysis was conducted to evaluate changes in HbA1c compared to that in a nonequivalent control group using a standard quality measure. RESULTS: In total, 312 individual patients interacted with the pharmacist. Of those patients, 228 had diabetes. A total of 111 patients underwent pre-post HbA1c analysis. In those patients, there was a statistically significant reduction in mean HbA1c . There was no difference in clinic-level results between the intervention and control locations. CONCLUSION: Collaboration between a community pharmacy and PCMH is feasible and may improve patient care. Future research should include pharmacy-based visits and development of a process for improved communication.
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Servicios Comunitarios de Farmacia , Farmacias , Arkansas , Humanos , Atención Dirigida al Paciente , Farmacéuticos , Rol ProfesionalRESUMEN
This study examined individuals' recollection of gun safety conversations during childhood, and with whom these conversations occurred. Data were collected using a retrospective survey of 298 college students aged 18-54 from three campuses of a university in the USA. Respondents reported whether they recalled discussing guns or gun safety with a parent, doctor, or school official in childhood as well as what age they recalled first discussing guns or gun safety with this adult. Those growing up in gun-owning households were more likely to report gun safety conversations with parents and to report having these conversations at earlier ages. More affluent youth were more likely to report gun safety conversations with school officials and to report having gun safety discussions with adults in a variety of roles. Few respondents recalled discussing guns with a doctor or paediatrician. Future investigations are needed to assess the content and form of gun safety conversations between children and caregivers.
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Armas de Fuego , Padres , Seguridad , Heridas por Arma de Fuego/prevención & control , Adolescente , Adulto , Niño , Comunicación , Femenino , Violencia con Armas/prevención & control , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Estudiantes/estadística & datos numéricos , Encuestas y Cuestionarios , Universidades , Adulto JovenRESUMEN
The value of the zebrafish (Danio rerio) as a model organism continues to expand. In developing the model, current feeding practice in zebrafish laboratories includes the use of commercially available diets. In this study, we compared outcomes in growth, body composition, and reproduction among zebrafish fed five highly utilized commercial diets and one formulated chemically defined reference diet. Wild-type zebrafish larvae were raised on live feed until 21 days postfertilization and then fed diets for 16 weeks. All fish received a daily ration of >5% of body weight (adjusted biweekly). Growth varied among diets throughout the feeding trial, and at study termination (week 16), significant differences among diets were observed for terminal weight gain, body condition index, body fat deposition, and reproductive outcomes. In addition, the proportion of viable embryos produced from females fed the formulated reference diet was high relative to the commercial diets. These data suggest that metabolic profiles, most likely reflecting nutrient/energy availability, utilization, and allocation, vary relative to diet in zebrafish. Undefined differences in metabolic profiles could result in erroneous predictions of health outcomes and make comparisons among laboratories more challenging. We recommend that dietary standards should be defined for zebrafish to support their common utility in biomedical research.
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Alimentación Animal/análisis , Composición Corporal/efectos de los fármacos , Dieta/veterinaria , Reproducción/efectos de los fármacos , Aumento de Peso/efectos de los fármacos , Pez Cebra/fisiología , Fenómenos Fisiológicos Nutricionales de los Animales , Animales , Dieta/clasificación , Femenino , Masculino , Distribución Aleatoria , Pez Cebra/crecimiento & desarrolloRESUMEN
BACKGROUND: In areas where the prevalence of soil-transmitted helminthiasis (STH) is >20%, the World Health Organization (WHO) recommends that deworming medication be given periodically to preschool-age children. To reduce risk of choking-related deaths in children <3 years old, WHO recommends that deworming tablets be crushed and given with water. Little is known about how widely this is practiced or its effectiveness. METHODOLOGY AND PRINCIPAL FINDINGS: Albendazole distributions for STH were observed for children 1-4 years old in 65 sites in India and Haiti. Information was recorded on child demographics; child demeanor immediately before, as well as struggling or resistance during albendazole administration; tablet form (i.e., crushed or not); and adverse swallowing events (ASEs), including choking, spitting; coughing; gagging; vomiting; and expelling a crushed tablet in a "cloud" of powder. Of 1677 children observed, 248 (14.8%) had one or more ASEs. ASE risk was 3.6% with whole tablets, 25.4% with crushed tablets, and 34.6% when crushed tablets were mixed with water. In multivariate analysis, ASE risk was significantly associated with children 1 year (OR 2.7) or 2 years (OR 2.9) of age; male gender (OR 1.6); non-content child demeanor (fearful, fussy, or combative) before albendazole administration (OR 4.3); child struggling when given albendazole (OR 2.1); and giving water, either after the tablet or mixed with it (OR 5.8). Eighteen (1.1%) children choked, none fatally; 17 choking incidents occurred with crushed tablets. In a multivariate analysis that controlled for distribution site, the only significant risk factor for choking was non-content demeanor (OR 20.6). CONCLUSIONS AND SIGNIFICANCE: Deworming-related choking deaths in young children are preventable. In our sample, risk of choking could have been reduced by 79.5% if deworming tablets were not given to young children who were fussy, fearful, or combative or who struggled to resist tablet administration, with only an 18.4% reduction in drug coverage.
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Obstrucción de las Vías Aéreas/mortalidad , Albendazol/administración & dosificación , Deglución , Helmintiasis/tratamiento farmacológico , Albendazol/efectos adversos , Preescolar , Femenino , Humanos , Lactante , Masculino , Análisis Multivariante , Riesgo , Factores de Riesgo , Suelo/parasitologíaRESUMEN
BACKGROUND: Rosacea is a common facial skin disorder mainly affecting middle-aged adults. Its aetiology is unknown and pathogenesis uncertain. Activation of the host innate immune response has been identified as an important factor. The Demodex mite population in the skin of rosacea patients is significantly higher than in patients with normal skin, suggesting that they may be of aetiological importance in this disorder. OBJECTIVES: To determine the potential of Demodex mites to interact with the host immune system. METHODS: Live Demodex mites were extracted from normal facial skin of control subjects and used in cell stimulation experiments with the immortalized SZ95 sebocyte line. Time- and mite-dose-dependent experiments were performed. Direct effects of Demodex and effects of the medium in which Demodex had been cultured were evaluated on the Toll-like receptor (TLR) signalling pathway on both a gene and protein expression level. RESULTS: Mites modulated TLR signalling events on both mRNA and protein levels in SZ95 sebocytes. An initial trend towards downmodulation of genes in this pathway was observed. A subsequent switch to positive gene upregulation was recorded after 48 h of coculture. Demodex secreted bioactive molecules that affected TLR2 receptor expression by sebocytes. High numbers of Demodex induced proinflammatory cytokine secretion, whereas lower numbers did not. CONCLUSIONS: Demodex mites have the capacity to modulate the TLR signalling pathway of an immortalized human sebocyte line. Mites have the capacity to secrete bioactive molecules that affect the immune reactivity of sebocytes. Increasing mite numbers influenced interleukin-8 secretion by these cells.