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1.
BMC Health Serv Res ; 24(1): 205, 2024 Feb 15.
Artículo en Inglés | MEDLINE | ID: mdl-38355508

RESUMEN

To better understand the specific influences of early life on the long-term health and well-being of local Aboriginal children in Alice Springs, high-quality local longitudinal data is required. The Central Australian Aboriginal Congress and the Murdoch Children's Research Institute are exploring the feasibility of establishing a cohort study to fill this gap. A nested qualitative study was conducted to identify priority issues that can be translated into research questions answerable through the proposed cohort study. Semi-structured interviews and focus group discussions (FGDs) were conducted with a range of key community stakeholders, parents and caregivers of young Aboriginal children from Alice Springs in the Northern Territory between 2020 and 2021. Two Aboriginal and two non-Aboriginal researchers conducted 27 interviews and 3 FGDs with 42 participants. Three broad themes were constructed through reflexive thematic analysis representing the areas of focus community stakeholders and parents want future research to prioritise: (1) social determinants of health (2) building positive connections, and (3) making sure kids grow up strong and healthy. Priority setting for future research should be driven by Aboriginal and Torres Strait Islander peoples in order to be of practical benefit to their community. This qualitative study found that housing, transport and positive connections through nurturing and engaged parents were some of the most important issues raised. Participants also wanted future research to focus on issues specific to children such as nutrition, hearing loss, language development and capacity to learn. These findings will guide future work led by local Aboriginal researchers to co-design the proposed cohort study.


Asunto(s)
Aborigenas Australianos e Isleños del Estrecho de Torres , Servicios de Salud del Indígena , Niño , Humanos , Australia , Estudios de Cohortes , Investigación sobre Servicios de Salud , Investigación Cualitativa , Servicios de Salud
2.
J Small Anim Pract ; 61(4): 247-252, 2020 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-32043601

RESUMEN

OBJECTIVES: To investigate the relationship between total and ionised calcium concentrations in dogs with ionised hypercalcaemia and to evaluate how albumin influences this relationship. METHODS: Initially, a reference interval for ionised and total calcium was established using a large population of healthy adult dogs. Our teaching hospital clinical database was searched to identify adult dogs with ionised hypercalcaemia between 2012 and 2017, a time frame when the same sample handling and analysis protocols were in place as for the healthy reference interval population. The relationship between ionised and total calcium concentrations was then examined in the ionised hypercalcaemia population. RESULTS: Based on biochemical analysis of 351 healthy adult dogs, a reference interval of 1.18 to 1.53 mmol/L for ionised calcium and 2.24 to 2.85 mmol/L for total calcium was established. Using these reference intervals, 63 dogs with ionised hypercalcaemia were identified, of which 23 did not have total hypercalcaemia. Only seven of the 23 dogs with ionised hypercalcaemia and total calcium below the upper limit of the reference interval had hypoalbuminemia. The majority of dogs with ionised hypercalcemia and normal total calcium had a modest increase in ionised calcium. CLINICAL SIGNIFICANCE: If relying on total calcium alone, more than one third of dogs with ionised hypercalcaemia will be classified as normocalcaemic and the majority of these dogs had normal serum albumin.


Asunto(s)
Enfermedades de los Perros , Hipercalcemia/veterinaria , Animales , Calcio , Perros , Valores de Referencia , Albúmina Sérica
3.
Br J Dermatol ; 179(5): 1127-1134, 2018 11.
Artículo en Inglés | MEDLINE | ID: mdl-29959775

RESUMEN

BACKGROUND: Knowledge about the required duration of exposure for elicitation of allergic nickel dermatitis in nickel-allergic individuals is limited. However, it often has been proposed that short skin contact is safe. OBJECTIVES: To examine whether repeated skin contact with nickel over short time periods (3 × 10 min) can elicit allergic nickel dermatitis. METHODS: Sixteen nickel-allergic adults and 10 controls were exposed to, respectively, nickel- and aluminium-containing discs on each volar forearm and on each earlobe for 3 × 10 min. One arm was pretreated for 24 h with sodium lauryl sulfate (SLS) 0·5% under occlusion before exposure. One aluminium and one nickel exposure site were clinically evaluated, and blood flow was measured with laser Doppler flowmetry at day 2 and day 4. RESULTS: Ten of 16 (63%) nickel-allergic participants developed allergic nickel dermatitis on SLS-pretreated arm skin and three of 16 (19%) developed it on normal skin on the earlobe. On the SLS-pretreated arms of nickel-allergic participants, blood flow increased significantly more on the nickel-exposed skin than on the aluminium-exposed skin on days 2 and 4. No change in clinical reactivity or blood flow was found on normal forearm skin in nickel-allergic participants or on any skin in controls. CONCLUSIONS: This experimental study showed that relatively short repeated skin contact (3 × 10 min) with metallic nickel elicits allergic nickel dermatitis in irritated skin and at sites with previous dermatitis. The results support the restrictions in current nickel regulation.


Asunto(s)
Alérgenos/efectos adversos , Dermatitis Alérgica por Contacto/diagnóstico , Níquel/efectos adversos , Adulto , Alérgenos/administración & dosificación , Aluminio/administración & dosificación , Aluminio/efectos adversos , Dermatitis Alérgica por Contacto/etiología , Femenino , Experimentación Humana , Humanos , Irritantes/administración & dosificación , Masculino , Persona de Mediana Edad , Níquel/administración & dosificación , Pruebas Cutáneas/métodos , Dodecil Sulfato de Sodio/administración & dosificación , Factores de Tiempo
4.
Clin Transl Allergy ; 6: 26, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27446529

RESUMEN

BACKGROUND: Persulphates from hair bleaching products are considered the major cause of occupational-rhinitis and asthma in hairdressers. The specific inhalation challenge (SIC) is considered 'reference standard' for diagnosing persulphate-induced asthma and rhinitis; however, the currently validated method of performing SIC with persulphate powder is time consuming with a duration of up to 4 days. The value of skin prick tests (SPTs) and histamine release tests (HRTs) with persulphates is unknown. The aim of this study was to establish a novel rapid SIC with persulphate powder to test for both rhinitis and asthma simultaneously in 1 day. In addition, we assessed the suitability of SPTs and HRTs for detecting persulphate-induced respiratory diseases. METHODS: The study population included 19 hairdressers with a history of work-related rhinitis and/or asthma symptoms, 12 symptomatic controls (10 with concurrent allergic asthma and rhinitis and two with non-allergic asthma), and 40 healthy controls. A previous severe asthmatic reaction and/or anaphylactic reaction to persulphates was considered an exclusion criterion for hairdressers. The 19 hairdressers and 12 symptomatic controls had SIC performed with 3 × 5 min exposures to potassium persulphate powder in a provocation chamber. All participants, including the 40 healthy controls, were subjected also to SPTs and HRTs with three persulphate salts at concentrations of 2-20 % and 0.03-1 %, respectively. RESULTS: None of the symptomatic controls had a nasal or bronchial response to SIC with potassium persulphate. Six hairdressers presented a nasal and two a bronchial response. No severe reactions occurred. No positive SPTs were recorded, neither among hairdressers, symptomatic controls, nor healthy controls. All three groups showed nonspecific non-IgE mediated histamine release to persulphates in HRT. CONCLUSIONS: The proposed method for performing SIC showed a high specificity for detecting persulphate-induced asthma and rhinitis. The rapid SIC was able to produce positive nasal and bronchial responses in symptomatic hairdressers without any severe reactions occurring. SPTs and HRTs cannot predict asthma or rhinitis caused by persulphates.

5.
Vaccine ; 30 Suppl 1: A190-5, 2012 Apr 27.
Artículo en Inglés | MEDLINE | ID: mdl-22520131

RESUMEN

UNLABELLED: Evaluation of the safety of rotavirus vaccines, particularly with respect to the risk of intussusception, is recommended for countries planning to introduce rotavirus vaccines into the National Immunisation Program. However, as prospective studies are costly, require time to conduct and may be difficult to perform in some settings, retrospective hospital based surveillance at sentinel sites has been suggested as an option for surveillance for intussusception following introduction of rotavirus vaccines. OBJECTIVE: To assess the value of retrospective hospital based surveillance to describe clinical and epidemiological features of intussusception in children aged <24 months and to investigate any temporal association between receipt of a rotavirus vaccine and intussusception. METHODS: A retrospective chart review of all patients diagnosed with intussusception at Royal Children's Hospital, Melbourne, Australia over an 8-year period including before and after rotavirus vaccine introduction into the National Immunisation Program, was conducted using patients identified by a medical record database (ICD-10-CM 56.1). Patient profile, clinical presentation, treatment and outcome were analysed along with records of immunisation status obtained using the Australian Childhood Immunisation Register. RESULTS: A 9% misclassification rate of discharge diagnosis of intussusception was identified on critical chart review. The incidence rate of intussusception at the Royal Children's Hospital over the study period was 1.91 per 10,000 infants <24 months (95% CI 1.65-2.20). Intestinal resection was required in 6.5% of infants (95% CI 3.6%, 11.0%). Intussusception occurred within 30 days after vaccination in 2 of 27 patients who had received at least 1 dose of a rotavirus vaccine. CONCLUSIONS: Valuable data on the incidence, clinical presentation and treatment outcomes of intussusception can be obtained from data retrieved from hospital medical records in a sentinel paediatric hospital using standardised methodology. However, there are methodological limitations and the quality of the data is highly dependent on the accuracy and completeness of the patient information recorded, the system of coding and record retrieval.


Asunto(s)
Intususcepción/inducido químicamente , Intususcepción/epidemiología , Infecciones por Rotavirus/epidemiología , Infecciones por Rotavirus/prevención & control , Vacunas contra Rotavirus/efectos adversos , Australia/epidemiología , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/epidemiología , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/patología , Femenino , Hospitales , Humanos , Incidencia , Lactante , Intususcepción/patología , Masculino , Prevalencia , Estudios Retrospectivos , Infecciones por Rotavirus/inmunología , Infecciones por Rotavirus/mortalidad , Vacunas contra Rotavirus/administración & dosificación , Vigilancia de Guardia
6.
J Clin Microbiol ; 46(9): 2959-65, 2008 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-18650354

RESUMEN

The Foodborne Viruses in Europe network has developed integrated epidemiological and virological outbreak reporting with aggregation and sharing of data through a joint database. We analyzed data from reported outbreaks of norovirus (NoV)-caused gastroenteritis from 13 European countries (July 2001 to July 2006) for trends in time and indications of different epidemiology of genotypes and variants. Of the 13 countries participating in this surveillance network, 11 were capable of collecting integrated epidemiological and virological surveillance data and 10 countries reported outbreaks throughout the entire period. Large differences in the numbers and rates of reported outbreaks per country were observed, reflecting the differences in the focus and coverage of national surveillance systems. GII.4 strains predominated throughout the 5-year surveillance period, but the proportion of outbreaks associated with GII.4 rose remarkably during years in which NoV activity was particularly high. Spring and summer peaks indicated the emergence of genetically distinct variants within GII.4 across Europe and were followed by increased NoV activity during the 2002-2003 and 2004-2005 winter seasons. GII.4 viruses predominated in health care settings and in person-to-person transmission. The consecutive emergence of new GII.4 variants is highly indicative of immune-driven selection. Their predominance in health care settings suggests properties that facilitate transmission in settings with a high concentration of people such as higher virus loads in excreta or a higher incidence of vomiting. Understanding the mechanisms driving the changes in epidemiology and clinical impact of these rapidly evolving RNA viruses is essential to design effective intervention and prevention measures.


Asunto(s)
Infecciones por Caliciviridae/epidemiología , Brotes de Enfermedades , Enfermedades Transmitidas por los Alimentos/epidemiología , Gastroenteritis/epidemiología , Norovirus , Infecciones por Caliciviridae/transmisión , Infecciones por Caliciviridae/virología , Notificación de Enfermedades , Europa (Continente)/epidemiología , Enfermedades Transmitidas por los Alimentos/virología , Gastroenteritis/virología , Genotipo , Humanos , Análisis Multivariante , Norovirus/genética
7.
J Public Health (Oxf) ; 30(1): 82-90, 2008 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-18089585

RESUMEN

BACKGROUND: The food-borne viruses in Europe (FBVE) network database was established in 1999 to monitor trends in outbreaks of gastroenteritis due to noroviruses (NoVs), to identify major transmission routes of NoV infections within and between participating countries and to detect diffuse international food-borne outbreaks. METHODS: We reviewed the total of 9430 NoV outbreak reports from 13 countries with date of onset between 1 January 2002 and 1 January 2007 for representativeness, completeness and timeliness against these objectives. RESULTS: Rates of reporting ranged from a yearly average of 1.8 in 2003 to 11.6 in 2006. Completeness of reporting of an agreed minimum dataset improved over the years, both for epidemiological and virological data. For the 10 countries that provided integrated (epidemiological AND virological) reporting over the 5-year period, the completeness of the minimum dataset rose from 15% in 2003 to 48% in 2006. Two countries have not been able to combine both data types due to the structure of the national surveillance system (England and Wales and Germany). Timeliness of reporting (median days between the onset of an outbreak and the date of reporting to the FBVE database) differed greatly between countries, but gradually improved to 47 days in 2006. CONCLUSION: The outbreaks reported to the FBVE reflect the lack of standardization of surveillance systems across Europe, making direct comparison of data between countries difficult. However, trends in reported outbreaks per country, distribution of NoV genotypes, and detection of diffuse international outbreaks were used as background data in acute questions about NoV illness and the changing genotype distribution during the 5-year period, shown to be of added value. Integrated reporting is essential for these objectives, but could be limited to sentinel countries with surveillance systems that allow this integration. For successful intervention in case of diffuse international outbreaks, completeness and timeliness of reporting would need to be improved and expanded to countries that presently do not participate.


Asunto(s)
Infecciones por Caliciviridae/epidemiología , Recolección de Datos/normas , Brotes de Enfermedades , Contaminación de Alimentos , Enfermedades Transmitidas por los Alimentos/epidemiología , Gastroenteritis/epidemiología , Norovirus , Seguridad , Bases de Datos como Asunto , Métodos Epidemiológicos , Europa (Continente)/epidemiología , Humanos , Vigilancia de la Población , Salud Pública , Factores de Riesgo , Encuestas y Cuestionarios , Factores de Tiempo
8.
Occup Environ Med ; 64(11): 763-8, 2007 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-17951343

RESUMEN

OBJECTIVES: Belonging to the group of high molecular weight respiratory sensitisers, microbial enzymes have been reported as a well known cause of occupational allergy, typically manifesting itself as rhinitis and/or asthma. High exposure to such high molecular weight sensitisers, and possibly also peak exposures, implies a higher risk than low exposure, but the exact relation between exposure, sensitisation and clinical allergy remains to be clarified. The authors sought to estimate the risk of respiratory enzyme allergy in an enzyme producing plant and to assess the relation between exposure indices and allergy. METHODS: Retrospective follow-up study based upon data gathered from health surveillance since 1970. 1207 employees from production and laboratories were included. The level of enzyme exposure in the relevant departments was estimated retrospectively into five exposure levels based on 10-fold increments/decrements of the threshold limit value and other exposure information. The risk was estimated in an exponential regression survival model fitted with constant intensity for subperiods of time using maximum likelihood estimation. RESULTS: During the first three years of a person's employment, the enzyme sensitisation and allergy incidence rates were 0.13 and 0.03 per person-year at risk, respectively. In the fitted models, exposure class did not correlate with the outcome variables. The risk of sensitisation decreased along the three decades, whereas the risk of allergy remained unchanged. The risk of sensitisation and allergy was doubled among smokers. Pre-employment atopy was only associated with sensitisation risk. CONCLUSION: Sensitisation to enzymes decreased during the study period, possibly reflecting improvements in the working environment. A similar decrease could not be demonstrated for allergy to enzymes. Neither of the two outcomes correlated with exposure estimates, possibly because of the low precision of the estimates.


Asunto(s)
Enzimas/toxicidad , Enfermedades Profesionales/epidemiología , Exposición Profesional/efectos adversos , Hipersensibilidad Respiratoria/epidemiología , Adulto , Dinamarca/epidemiología , Femenino , Estudios de Seguimiento , Humanos , Incidencia , Masculino , Enfermedades Profesionales/inducido químicamente , Análisis de Regresión , Hipersensibilidad Respiratoria/inducido químicamente , Estudios Retrospectivos , Factores de Riesgo
9.
Clin Exp Allergy ; 35(2): 199-206, 2005 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-15725192

RESUMEN

BACKGROUND: In spite of significant safety measures, allergy to industrial enzymes remains a major concern. The increasing prevalence of occupational allergy emphasizes the need to investigate the functional properties of enzyme-exposed dendritic cells (DCs), as DCs possess a potent ability to activate allergen-specific T cells. OBJECTIVE: This study aims at elucidating the molecular mechanisms underlying allergic immune responses to lipase, an industrial enzyme. For this purpose, we studied the effect of both hypoallergenic and wild-type lipase on the transcriptional regulation in DCs and their stimulatory effect on memory CD4+ T cells. METHODS: Five individuals with documented lipase allergy were tested for specific serum IgE. DCs from these individuals, stimulated with lipases, were assayed for their ability to affect proliferation and polarization of memory T cells. The effect of lipases on transcriptional activity in DCs was evaluated using global expression analysis. RESULTS: Lipase-specific IgE levels varied considerably between donors, with donor 4 exhibiting highest levels, and a potent specific CD4+ T cell recall response was demonstrated only for donor 4. No difference was detected in cytokine profile when T cells from donor 4 were co-cultured with DCs pulsed with either hypoallergenic or wild-type lipase, as demonstrated by high IL-4 and IL-13, and low IFN-gamma production. However, the lipases induced different genetic signatures in DCs from donor 4, as compared with the non-responders. CONCLUSIONS: DCs from individuals with clinically diagnosed allergy to lipase displayed a differential response to stimulation with hypoallergenic and wild-type lipase in vitro. Only allergen-pulsed DCs from donor 4 were able to induce CD4+ T cell proliferation. The lipase-specific T cells displayed a T-helper type 2 phenotype, which was not altered by hypoallergenic lipase-pulsed DCs. Furthermore, DCs derived from donor 4 and stimulated with either of the lipases displayed different transcriptional profiles, as compared with the other donors. These signatures represent genes of potential importance for an immunoregulatory role of DC in an ongoing allergic response.


Asunto(s)
Células Dendríticas/inmunología , Dermatitis Profesional/inmunología , Detergentes , Perfilación de la Expresión Génica , Transcripción Genética , Animales , Proliferación Celular , Citocinas/inmunología , Humanos , Inmunoglobulina E/análisis , Lipasa/inmunología , Ratones , Ratones Endogámicos BALB C , Análisis de Secuencia por Matrices de Oligonucleótidos , Linfocitos T/inmunología
10.
Vet Immunol Immunopathol ; 93(3-4): 135-51, 2003 Jun 20.
Artículo en Inglés | MEDLINE | ID: mdl-12814699

RESUMEN

It is well known that piglets congenitally infected with porcine reproductive and respiratory syndrome virus (PRRSV) can be viremic at birth, and that preweaning mortality due to secondary infections often increases during acute outbreaks of PRRS. Therefore, an immunosuppressive effect of in utero infection has been suggested. The aim of the present study was to characterise the changes of leukocyte populations in piglets surviving in utero infection with PRRSV. A total of 27 liveborn uninfected control piglets and 22 piglets infected transplacentally with a Danish strain of PRRSV were included. At 2 and 4 weeks of age, 21 of 22 (96%) and 7 of 14 (50%) examined infected piglets were still viremic, whereas PRRSV could not be detected in the six infected piglets examined at 6 weeks of age. Flow cytometry analysis was used to determine the phenotypic composition of leukocytes in peripheral blood and bronchoalveolar lavage fluid (BALF) of 2-, 4- and 6-week-old infected piglets and age-matched uninfected controls. The key observation in the present study is that high levels of CD8(+) cells constitute a dominant feature in peripheral blood and BALF of piglets surviving in utero infection with PRRSV. In BALF, the average high level of CD8(+) cells in 2-week-old infected piglets (33.4 +/- 12.6%) was followed by a decline to 7.3 +/- 3.0 and 11.1 +/- 3.0% at 4 and 6 weeks of age. BALF of control piglets contained 1.6 +/- 0.9, 2.3 +/- 1.8 and 1.9 +/- 0.5% CD8(+) cells, only. In peripheral blood, however, the average number of CD8(+) cells remained at high levels in the infected piglets throughout the post-natal experimental period (2.8 +/- 1.9, 2.9 +/- 1.8 and 3.2 +/- 1.7 x 10(6) CD8(+) cells/ml at 2, 4 and 6 weeks, respectively). In the controls, the average levels of CD8(+) cells were 0.9+/-0.2, 1.9 +/- 1.7 and 1.6 +/- 0.5 x 10(6)/ml, respectively. Furthermore, the numbers of CD2(+) , CD4(+)CD8(+) and SLA-classII(+) cells, respectively, in peripheral blood, together with the levels of CD2(+) and CD3(+) cells in BALF were increased in the infected piglets infected in utero compared to the uninfected controls. The kinetic analyses carried out in the present study reflect that in utero infection with PRRSV modulates immune cell populations in peripheral blood and BALF of surviving piglets. The observed changes are characterised by high levels of CD8(+) cells supporting an important role of these cells in PRRSV infection. The present results, however, do not support the existence of post-natal immunosuppression following in utero infection with PRRSV.


Asunto(s)
Líquido del Lavado Bronquioalveolar/inmunología , Leucocitos/inmunología , Leucocitos/virología , Síndrome Respiratorio y de la Reproducción Porcina/inmunología , Virus del Síndrome Respiratorio y Reproductivo Porcino/inmunología , Envejecimiento/inmunología , Animales , Líquido del Lavado Bronquioalveolar/citología , Femenino , Recuento de Leucocitos , Leucocitos/clasificación , Intercambio Materno-Fetal , Virus del Síndrome Respiratorio y Reproductivo Porcino/aislamiento & purificación , Virus del Síndrome Respiratorio y Reproductivo Porcino/fisiología , Embarazo , Porcinos/inmunología , Porcinos/virología , Viremia
11.
Acta Anaesthesiol Scand ; 47(5): 525-31, 2003 May.
Artículo en Inglés | MEDLINE | ID: mdl-12699508

RESUMEN

BACKGROUND: Plasma concentrations of inflammatory markers are increased in response to the trauma of cardiac surgery and cardiopulmonary bypass (CPB). It is, however, unknown whether the plasma cytokine levels and cytokine mRNA expression at organ level reflect each other. METHODS: Twenty-six piglets (17-19 days) were allocated to the sham-group (sternotomy only, n = 13) or to the CPB-group (sternotomy, 120 min CPB procedure with 60-min aortic cross-clamp, n = 13). The pigs were observed for 0.5 h or 4 h post-CPB. Plasma levels of IL-1beta, IL-6, IL-8 and IL-10 and mRNA expression of TNF-alpha, IL-1beta, IL-6, IL-8, IL-10 and iNOS in organs were registered with concomitant changes in oxygenation index (OI) and expiratory nitric oxide (NO). RESULTS: In pigs killed 0.5 h post-CPB there was a significant increase in IL-10 mRNA in the lungs and kidneys compared with the sham-group. IL-1beta mRNA was detectable in the kidneys and lungs of the CPB-pigs, while IL-6 mRNA was up regulated only in lungs. In pigs killed 4 h post-CPB a significantly higher IL-6 mRNA was found in heart tissue and a lower IL-10 mRNA was found in lungs of CPB pigs compared with the sham-group. There was a concomitant significant increase in OI and increased plasma IL-8 and IL-10 concentrations in the CPB-pigs compared with the sham-pigs. CONCLUSION: The cytokine mRNA expression pattern was very different for the pigs killed already 0.5 h after the CPB procedure compared with the pigs killed 4 h post-CPB. The plasma cytokine levels poorly reflected mRNA expression of the pro- and anti-inflammatory cytokines.


Asunto(s)
Animales Recién Nacidos/fisiología , Puente Cardiopulmonar/efectos adversos , Citocinas/biosíntesis , Citocinas/sangre , ARN Mensajero/biosíntesis , Animales , Riñón/metabolismo , Hígado/metabolismo , Pulmón/metabolismo , Miocardio/metabolismo , Consumo de Oxígeno/fisiología , Pruebas de Función Respiratoria , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , Porcinos
12.
Viral Immunol ; 15(4): 549-56, 2002.
Artículo en Inglés | MEDLINE | ID: mdl-12513926

RESUMEN

An experimental model was used to investigate mRNA cytokine profiles in bronchoalvolar cells (BALC) from piglets, infected in utero with porcine reproductive and respiratory syndrome virus (PRRSV). The BALC's were analyzed for the cytokines TNF-alpha, IFN-gamma, IL-8, IL-10, and IL-12(p40) by real-time TaqMan polymerase chain reaction in 2-, 4-, and 6-week-old piglets, respectively. High levels of IFN-gamma mRNA was detected in all piglets, while IL-10 was upregulated in 2-week-old piglets, was at normal levels in 4-week-old piglets, and elevated again in 6-week-old piglets. IL-12 was weakly elevated in all three age groups. Virus was reduced by 50% in 4-week-old piglets and cleared by 6 weeks of age. The sustained expression of IFNgamma and reduction of IL-10 production indicate an important role for these cytokines in immunity to PRRSV.


Asunto(s)
Líquido del Lavado Bronquioalveolar/citología , Citocinas/metabolismo , Síndrome Respiratorio y de la Reproducción Porcina/inmunología , Virus del Síndrome Respiratorio y Reproductivo Porcino/inmunología , ARN Mensajero/metabolismo , Animales , Femenino , Transmisión Vertical de Enfermedad Infecciosa , Interferón gamma/metabolismo , Interleucina-10/metabolismo , Síndrome Respiratorio y de la Reproducción Porcina/transmisión , Síndrome Respiratorio y de la Reproducción Porcina/virología , Embarazo , Porcinos
13.
J Assoc Nurses AIDS Care ; 12(4): 77-88, 2001.
Artículo en Inglés | MEDLINE | ID: mdl-11486723

RESUMEN

This study measured quantitatively and explored qualitatively silencing behaviors and affectivity (mood) in women living with HIV/AIDS and confirmed the validity of the Silencing the Self Scale and the Positive and Negative Affect Scale. Silencing behaviors are interpersonal communication styles that suppress personal needs and feelings to preserve relationships with others. Silencing behaviors serve as protective strategies that allow one to divorce oneself from an overbearing culture. Affectivity is a way of measuring one's personal mood state by a positive to negative continuum. The results indicate that the women silenced themselves profoundly, especially when it came to putting the needs of their children or dependents before their own. The women also had high levels of negative affectivity. The research findings from this study extend nursing knowledge by addressing the unique social processes of women living with HIV/AIDS within health care service structures and significant social groups. Further exploration of "silencing" as a phenomenon of this group through measurement and experience will help define specific interventions that are meaningful to and for women living with HIV/AIDS.


Asunto(s)
Afecto , Ego , Infecciones por VIH/psicología , Pruebas Psicológicas , Conducta Social , Adulto , Altruismo , Boston , Estudios Transversales , Femenino , Infecciones por VIH/enfermería , Humanos , Relaciones Interpersonales , Proyectos Piloto , Reproducibilidad de los Resultados
14.
J Nutr Health Aging ; 4(1): 42-6, 2000.
Artículo en Inglés | MEDLINE | ID: mdl-10840476

RESUMEN

The risk of protein calorie malnutrition among the community dwelling elderly is high. If undetected or untreated malnutrition can raise risks of morbidity and mortality. Therefore, improving screening, assessment and treatment of malnutrition, particularly in ambulatory settings that serve the elderly is imperative. The aim of this paper is to briefly detail the diagnostic criteria for protein calorie malnutrition and discuss the special considerations necessary in evaluating risk and causes of malnutrition in the elderly. We conclude with a review of current management options and discuss the cost effectiveness and potential inappropriate use of commercially manufactured oral nutritional supplements.


Asunto(s)
Suplementos Dietéticos , Alimentos Formulados , Trastornos Nutricionales/dietoterapia , Anciano , Envejecimiento , Estatura , Peso Corporal , Humanos , Trastornos Nutricionales/diagnóstico , Trastornos Nutricionales/etiología , Factores de Riesgo , Albúmina Sérica/análisis
16.
J Gen Virol ; 80 ( Pt 12): 3241-3250, 1999 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-10567657

RESUMEN

Transcription of the human papillomavirus type 16 (HPV-16) genome is controlled by several promoters; the P(97) promoter is considered to be the main one. An additional promoter has been identified within the E7 ORF as well as an antisense promoter just upstream of the L2 ORF. The significance of these promoters for early and late gene expression and their activity related to cell differentiation is not known in detail. Identification of two new, previously undescribed transcription start sites at nt 542 just upstream of the E7 ORF and at nt 611 within the E7 ORF is reported. The promoter responsible for the start site at nt 542 (P(542)) was active in SiHa, HeLa and C33A cells. Very low promoter activity was found upstream of the nt 611 start site. The E7 protein has previously been shown to be synthesized from a polycistronic mRNA encoding both the E6 and E7 proteins under the control of the P(97) promoter. The data reported in the present paper suggest that promoter P(542) may control synthesis of the E7 oncoprotein from a monocistronic mRNA.


Asunto(s)
Proteínas Oncogénicas Virales/genética , Papillomaviridae/genética , Regiones Promotoras Genéticas , Transcripción Genética , Secuencia de Bases , Línea Celular , Clonación Molecular/métodos , ADN Complementario/genética , Elementos de Facilitación Genéticos , Regulación Viral de la Expresión Génica , Células HeLa , Humanos , Queratinocitos , Datos de Secuencia Molecular , Sistemas de Lectura Abierta , Proteínas E7 de Papillomavirus , Mutación Puntual
17.
Ugeskr Laeger ; 161(4): 419-23, 1999 Jan 25.
Artículo en Danés | MEDLINE | ID: mdl-9951356

RESUMEN

The aim of the study was to investigate the influence of various environmental factors on occurrence of house dust mite allergens and the influence of allergen exposure on mite allergy. Ninety-two persons from a population study filled in a questionnaire, were skin prick and lung function tested and dust samples were collected from their mattresses for analyses. Two out of five patients with asthma had a positive skin reaction to house dust mite allergen in contrast to five out of 87 non-asthmatics. Fifty-nine per cent of the dust samples contained (group 1) mite allergen > 2 micrograms/g dust. Such mattresses were older (median 7 years, range 1-22) than mattresses with less allergen (median 4 years, range 1-20). In the six bedrooms reported to be humid or mouldy, mattresses contained high concentration of mite allergens. No other parameter investigated could predict the allergen contents. In almost all cases dust analyses are crucial to be able to advise patients with house dust mite allergy.


Asunto(s)
Contaminación del Aire Interior/efectos adversos , Alérgenos/efectos adversos , Polvo/efectos adversos , Hipersensibilidad/epidemiología , Ácaros , Alérgenos/análisis , Animales , Asma/diagnóstico , Asma/inmunología , Asma/fisiopatología , Ropa de Cama y Ropa Blanca , Estudios Transversales , Dinamarca/epidemiología , Volumen Espiratorio Forzado , Humanos , Hipersensibilidad/diagnóstico , Hipersensibilidad/etiología , Pruebas Cutáneas , Espirometría , Encuestas y Cuestionarios
18.
Diabetologia ; 41(9): 1040-6, 1998 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-9754822

RESUMEN

The quinoline-3-carboxamide, linomide, protects non-obese diabetic mice from diabetes. The effects of linomide on insulin needs and beta cell function were studied in recent juvenile Type I diabetes in a double-blind trial. Patients with recent onset diabetes were randomly assigned to treatment with a fixed dose of 2.5 mg linomide (42 patients) or placebo (21 patients) for 1 year, in addition to insulin and diet. Glycated haemoglobin was 10-15% lower at 9 months (p = 0.003) and 12 months (p < 0.05) in the linomide group. The insulin dose was 32-40% smaller in the linomide group at 3 (p < 0.03), 6 (p < 0.02), 9 (p < 0.001) and 12 months (p = 0.01). Insulin doses correlated negatively with C peptide values (p = 0.001-0.002). The trend for higher C peptide values in the linomide group did not reach significance. In a post hoc subgroup analysis performed in 40 patients (25 from the linomide group and 15 from the placebo group) who still had detectable residual beta cell function at entry, linomide was associated with 45-59% higher C peptide value at 6 months (p < 0.05), 9 months (p < 0.05) and 12 months (p < 0.05). The main adverse effects of linomide were mild transitory anaemia (45 vs 10% in the linomide and placebo groups), thrombocytopenia (24 vs 10%), and mild joint discomfort (45 vs 5%) with no clinical signs. In conclusion, low-dose linomide reduced the insulin needs in patients with juvenile Type I diabetes of recent onset and improved beta cell function in patients who still had detectable beta cell function at entry. These results support further clinical and experimental studies to define the effects of linomide in Type I diabetes provided the safety of linomide is reliably established.


Asunto(s)
Adyuvantes Inmunológicos/uso terapéutico , Antineoplásicos/uso terapéutico , Diabetes Mellitus Tipo 1/tratamiento farmacológico , Hidroxiquinolinas/uso terapéutico , Adyuvantes Inmunológicos/administración & dosificación , Adolescente , Adulto , Antineoplásicos/administración & dosificación , Péptido C/sangre , Niño , Método Doble Ciego , Femenino , Hemoglobina Glucada/metabolismo , Humanos , Hidroxiquinolinas/administración & dosificación , Hipoglucemiantes/uso terapéutico , Insulina/sangre , Insulina/uso terapéutico , Islotes Pancreáticos/metabolismo , Masculino
19.
Int J Clin Pharmacol Ther ; 36(6): 333-5, 1998 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-9660041

RESUMEN

This case illustrates severe hyponatremia following an acute overdose of paroxetine. An 83-year-old woman was admitted to our hospital after an attempt to commit suicide. She had consumed an overdose of 360 mg paroxetine. The treatment was started 3 days previously with 10 mg/day because of regular suffering from obsessive and suicidal thoughts. An initial sign of overdose was excessive vomiting. Five days late she developed hyponatremia (serum sodium 112 mmol/l) with somnolence, confusion, muscle spasms, dehydration of arms and legs and slow reflexes. Ecchymoses and myxoedema were also observed. Treatment included fluid restriction and sodium chloride infusion. Levothyroxin was prescribed and the hyponatremia resolved.


Asunto(s)
Antidepresivos de Segunda Generación/envenenamiento , Hiponatremia/inducido químicamente , Paroxetina/envenenamiento , Anciano , Sobredosis de Droga , Femenino , Humanos
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