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1.
Disabil Rehabil ; 45(26): 4424-4430, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-36448310

RESUMEN

PURPOSE: After injury or illness, a person's ability to drive may be impacted and they may experience a period of "driving disruption," a period during which they cannot drive although they have not permanently ceased driving. They may require additional information and supports from treating rehabilitation services; however, this process is less understood than others related to driving. MATERIALS AND METHODS: This study aimed to document the prevalence of driving-related issues and the current practices of a community rehabilitation service, regarding driving interventions. An audit of 80 medical records was conducted in a multidisciplinary community rehabilitation service in Brisbane, Australia. RESULTS: In total, 61% of clients were "driving-disrupted" on admission and 35% remained driving-disrupted on discharge. Majority of driving-disrupted clients had an acquired brain injury (ABI). Driving-related interventions were not routinely provided, with 29% receiving no information or supports. Clients with ABI more frequently received information; provision of psychosocial support and community access training was infrequent. CONCLUSIONS: This study highlights that return to driving is a common issue and goal for people undergoing community rehabilitation, with the period of driving disruption extending beyond rehabilitation discharge. It also highlights gaps in community rehabilitation practice, and opportunities to better support these clients.IMPLICATIONS FOR REHABILITATIONMany clients of community rehabilitation services experience driving disruption, often beyond discharge.Driving disruption should be recognised and documented by community rehabilitation services.Current practices may not adequately address the practical and psychological needs of clients experiencing driving disruption.


Asunto(s)
Lesiones Encefálicas , Alta del Paciente , Humanos , Australia , Lesiones Encefálicas/rehabilitación , Motivación , Sistemas de Apoyo Psicosocial
2.
Eur J Clin Pharmacol ; 77(9): 1323-1331, 2021 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-33751155

RESUMEN

PURPOSE: Sertraline, a selective serotonin reuptake inhibitor (SSRI), is one of the most commonly used antidepressant during pregnancy. Plasma sertraline concentrations vary markedly between individuals, partly explained by variability in hepatic drug metabolizing cytochrome P450-enzyme activity. Our purpose was to study the variability in the plasma concentrations in pregnant women and the passage to their infants. METHOD: Pregnant women with moderate untreated depression were recruited in 2016-2019 in Stockholm Region and randomized to treatment with sertraline or placebo. All received Internet-based cognitive behavior therapy as non-medical treatment. Sertraline plasma concentrations were measured around pregnancy weeks 21 and 30, at delivery, 1-month postpartum, in cord blood and at 48 h of age in the infant. The clinical course of the infants was followed. RESULTS: Nine mothers and 7 infants were included in the analysis. Median dose-adjusted sertraline concentration in second trimester was 0.15(ng/mL) /(mg/day), in third trimester and at delivery 0.19 and 1-month postpartum 0.25, with a 67% relative difference between second trimester and postpartum. The interindividual variation was 10-fold. Median concentrations in the infants were 33% and 25% of their mothers', measured in cord blood, and infant plasma, respectively. Only mild and transient adverse effects were seen on the infants. CONCLUSION: Placental passage of sertraline to the infant is low. However, the interindividual variation in maternal concentrations during pregnancy is huge, why therapeutic drug monitoring might assist in finding the poor metabolizers at risk for adversity and increase the safety of the treatment. TRIAL REGISTRATION: The trial was registered at clinicaltrials.gov July 9, 2014 with TRN: NCT02185547.


Asunto(s)
Antidepresivos/farmacocinética , Efectos Tardíos de la Exposición Prenatal/sangre , Sertralina/farmacocinética , Adulto , Antidepresivos/sangre , Antidepresivos/uso terapéutico , Terapia Cognitivo-Conductual/métodos , Trastorno Depresivo/tratamiento farmacológico , Método Doble Ciego , Femenino , Sangre Fetal/química , Humanos , Recién Nacido , Masculino , Leche Humana/química , Placenta/química , Periodo Posparto , Embarazo , Trimestres del Embarazo , Sertralina/sangre , Sertralina/uso terapéutico
3.
Acta Paediatr ; 107(8): 1379-1388, 2018 08.
Artículo en Inglés | MEDLINE | ID: mdl-29150869

RESUMEN

AIM: This study evaluated whether maternal mood disorders (MMD), particularly bipolar disorder, and lithium treatment during pregnancy influenced the neonatal health and cognition of children born from 2006 to 2010. METHODS: Our study at Karolinska University Hospital, Stockholm, Sweden, focused on women with and without mood disorders and their children. Information on pharmacotherapy, mental health, delivery and neonatal complications was retrospectively collected from electronic patient records. Children were tested in a blinded manner at four to five years of age with the Wechsler Preschool and Primary Scale of Intelligence, 3rd edition. Maternal health, child health and social situations were evaluated. RESULTS: Of the 39 children, 20 were exposed to lithium and MMD during pregnancy, eight were exposed to MMD but not lithium and 11 were not exposed to MMD or lithium. The children's full scale intelligence quotient (IQ), performance IQ and verbal IQ results did not differ significantly between the groups. The processing speed quotient was significantly lower in children exposed to mood disorders, but there was a high level of missing data for this subtest. CONCLUSION: This small, clinical cohort showed no significant association between mothers' prenatal exposure to lithium or mood disorders and their offspring's IQ.


Asunto(s)
Trastorno Bipolar/tratamiento farmacológico , Salud del Lactante , Litio/administración & dosificación , Trastornos del Humor/tratamiento farmacológico , Embarazo de Alto Riesgo , Efectos Tardíos de la Exposición Prenatal/diagnóstico , Centros Médicos Académicos , Adulto , Trastorno Bipolar/diagnóstico , Niño , Análisis por Conglomerados , Estudios de Cohortes , Femenino , Estudios de Seguimiento , Humanos , Recién Nacido , Pruebas de Inteligencia , Masculino , Trastornos del Humor/diagnóstico , Embarazo , Resultado del Embarazo , Atención Prenatal/métodos , Efectos Tardíos de la Exposición Prenatal/epidemiología , Efectos Tardíos de la Exposición Prenatal/psicología , Análisis de Regresión , Estudios Retrospectivos , Suecia , Factores de Tiempo
4.
J Evol Biol ; 30(7): 1386-1399, 2017 07.
Artículo en Inglés | MEDLINE | ID: mdl-28504469

RESUMEN

Understanding the magnitude and long-term patterns of selection in natural populations is of importance, for example, when analysing the evolutionary impact of climate change. We estimated univariate and multivariate directional, quadratic and correlational selection on four morphological traits (adult wing, tarsus and tail length, body mass) over a time period of 33 years (≈ 19 000 observations) in a nest-box breeding population of collared flycatchers (Ficedula albicollis). In general, selection was weak in both males and females over the years regardless of fitness measure (fledged young, recruits and survival) with only few cases with statistically significant selection. When data were analysed in a multivariate context and as time series, a number of patterns emerged; there was a consistent, but weak, selection for longer wings in both sexes, selection was stronger on females when the number of fledged young was used as a fitness measure, there were no indications of sexually antagonistic selection, and we found a negative correlation between selection on tarsus and wing length in both sexes but using different fitness measures. Uni- and multivariate selection gradients were correlated only for wing length and mass. Multivariate selection gradient vectors were longer than corresponding vector of univariate gradients and had more constrained direction. Correlational selection had little importance. Overall, the fitness surface was more or less flat with few cases of significant curvature, indicating that the adaptive peak with regard to body size in this species is broader than the phenotypic distribution, which has resulted in weak estimates of selection.


Asunto(s)
Evolución Biológica , Tamaño Corporal , Cambio Climático , Pájaros Cantores , Animales , Femenino , Masculino , Passeriformes , Selección Genética , Factores Sexuales
5.
Artículo en Inglés | MEDLINE | ID: mdl-26447936

RESUMEN

A sensitive liquid chromatography tandem mass spectrometry (LC-MS/MS) method was developed for quantification of lumefantrine (LUM) and its metabolite desbutyl-lumefantrine (DBL) in human plasma. Sample preparation was done by protein precipitation using acetonitrile containing deuterated lumefantrine (LUM-d18) and desbutyl-lumefantrine (DBL-d9) as internal standards. Total chromatography time was 2.2min using an Hypersil Gold C18 column (20×2.1mm, 1.9µm), with a gradient using 0.5% formic acid in water (mobile phase A) and 0.5% formic acid in methanol (mobile phase B) at a flow rate of 0.5mL/min. The mass spectrometric quantification was performed in positive electro spray ionization (ESI+) mode using selected reaction monitoring (SRM). Measuring range was 21-529ng/mL for LUM and 1.9-47ng/mL for DBL in plasma. Inter- and intra-assay precision was within 10% coefficient of variation (CV) for all levels of both LUM and DBL. Accuracy was within ±10% for all levels of both LUM and DBL. This method requires 100µL plasma volume and its short retention times allow a high throughput. Samples were stable for a week at +5°C, and up to six months -20°C. The method was successfully applied for plasma LUM and DBL determination in children under 5 years of age with uncomplicated malaria, up to 28 days after a standard 3-day treatment with artemether-lumefantrine.


Asunto(s)
Cromatografía Liquida/métodos , Etanolaminas/sangre , Fluorenos/sangre , Espectrometría de Masas en Tándem/métodos , Humanos , Límite de Detección , Lumefantrina , Estándares de Referencia , Reproducibilidad de los Resultados
6.
Psychol Med ; 45(16): 3559-69, 2015 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-26271451

RESUMEN

BACKGROUND: Autoimmune diseases are associated with substantial morbidity and mortality, yet the etiology remains unclear. Depression has been implicated as a risk factor for various immune-related disorders but little is known about the risk of autoimmune disease. This study examined the association between depression and the risk of autoimmune disease, and investigated the temporal and dose-response nature of these relationships. METHOD: A prospective population-based study including approximately 1.1 million people was conducted using linked Danish registries. Depression and autoimmune diseases were diagnosed by physicians and documented in medical records. In total, 145 217 individuals with depression were identified between 1995 and 2012. Survival analyses were used to estimate the relative risk of autoimmune disease among those with, compared to without, depression. Analyses were adjusted for gender, age, and co-morbid mental disorders. RESULTS: Depression was associated with a significantly increased risk of autoimmune disease [incidence rate ratio (IRR) 1.25, 95% CI 1.19-1.31], compared to those without a history of depression. Results suggest a general increased risk of autoimmune diseases following the onset of depression during first year (IRR 1.29, 95% CI 1.05-1.58), which remained elevated for the ensuing 11 years and beyond (IRR 1.53, 95% CI 1.34-1.76). Findings did not support a dose-response relationship. CONCLUSIONS: Depression appears to be associated with an increased risk of a range of autoimmune diseases. Depression may play a role in the etiology of certain autoimmune conditions. If replicated, findings could highlight additional clinical implications in the treatment and management of depression. Future studies are needed to investigate the possible social, genetic, and neurobiological underpinnings of these relationships.


Asunto(s)
Enfermedades Autoinmunes/epidemiología , Depresión/epidemiología , Adulto , Anciano , Comorbilidad , Dinamarca/epidemiología , Femenino , Humanos , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Sistema de Registros , Factores de Riesgo , Análisis de Supervivencia
7.
Vaccine ; 33(31): 3717-25, 2015 Jul 17.
Artículo en Inglés | MEDLINE | ID: mdl-26057135

RESUMEN

Prior study children from a DTaP efficacy trial were recruited at ages 5 and 15 years to randomized booster trials addressing immunogenicity and reactogenicity; 475 preschool children received mixed or separate injections of a reduced antigen vaccine (Tdap5, Sanofi Pasteur MSD) and an inactivated polio vaccine, and 230 adolescents received the same or another booster vaccine (Tdap1, SSI, Denmark). Pre-vaccination antibody concentrations against pertussis antigens were significantly higher at 15 than 5 years of age, probably due to natural boosting between the studies. Tdap5 induced comparable anti-PT concentrations at both ages, but antibody responses were significantly higher to filamentous haemagglutinin, pertactin and fimbriae 2/3 in adolescents. As expected, a higher amount of PT (Tdap1, 20µg) induced a stronger anti-PT response than a lower amount (Tdap5, 2.5µg). The frequency of adverse events was low and there were no serious adverse reactions. All local reactions had an early onset and a short duration. A large swelling or redness of more than half of the upper arm circumference was reported in 8/475 5-year-olds and in 6/230 15-year-olds. Children vaccinated with Tdap5 reported more moderate pain in adolescence than at preschool age, whereas itching was only reported in preschool children. Sweden introduced DTaP vaccines in 1996 after a 17-year hiatus with no general pertussis vaccination and pertussis was still endemic at the time of the studies. The frequency of adverse events was nevertheless low in both preschool children and adolescents and antibody responses were adequate. These studies document immunogenicity and reactogenicity in a trial cohort consecutively vaccinated with acellular pertussis vaccines from infancy to adolescence. The adolescent study was registered at ClinicalTrials.gov on 26 March 2009 (NCT00870350).


Asunto(s)
Anticuerpos Antibacterianos/sangre , Vacunas contra Difteria, Tétanos y Tos Ferina Acelular/administración & dosificación , Vacunas contra Difteria, Tétanos y Tos Ferina Acelular/inmunología , Inmunización Secundaria/métodos , Tos Ferina/prevención & control , Adolescente , Preescolar , Vacunas contra Difteria, Tétanos y Tos Ferina Acelular/efectos adversos , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/epidemiología , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/patología , Femenino , Humanos , Inmunización Secundaria/efectos adversos , Masculino , Suecia , Resultado del Tratamiento
8.
J Thromb Haemost ; 12(12): 1986-92, 2014 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-25322909

RESUMEN

BACKGROUND: Selective serotonin reuptake inhibitors (SSRIs) are known to increase the risk of gastrointestinal bleeding. OBJECTIVE: Study the risk of bleeding-related complications in relation to SSRI in pregnancy. PATIENTS/METHODS: This was a hospital-based cohort study. All women who gave birth at Karolinska University Hospital in Stockholm over a 5-year period (2007 to 2011) were included in the study. Those women who the electronic maternal health record indicated were using SSRI (n = 500) were considered exposed, and all other women formed a control population (n = 39,594). The main outcome measures were blood loss, postpartum hemorrhage (PPH), PP anemia and length of hospitalization. RESULTS: The absolute risk of PPH and PP anemia for the 1.2% exposed to SSRI were 18.0% and 12.8%, respectively. Women with a vaginal non-surgical delivery who reported use of SSRI during pregnancy had approximately a 2-fold increased risk of both PPH (OR, 2.6; 95% CI, 2.0-3.5) and PP anemia (OR, 2.1; 95% CI, 1.5-2.9), as compared with controls. Blood loss and length of hospitalization were significantly higher among women using SSRI than non-users (arithmetic mean 484 mL vs. 398 mL, 3.8 days vs. 2.4 days, respectively). CONCLUSION: The use of SSRI during pregnancy increases blood loss and doubles the risk of PPH and PP anemia in a setting where SSRI had not been considered a risk factor for increased blood loss. Because PPH is a leading cause of maternal mortality and morbidity, the awareness of bleeding-related complications is important, both in relation to pregnancy and to surgery in general.


Asunto(s)
Anemia/etiología , Depresión/tratamiento farmacológico , Hemorragia Gastrointestinal/etiología , Hemorragia Posparto/etiología , Inhibidores Selectivos de la Recaptación de Serotonina/efectos adversos , Adolescente , Adulto , Plaquetas/citología , Índice de Masa Corporal , Estudios de Cohortes , Parto Obstétrico , Depresión/complicaciones , Registros Electrónicos de Salud , Femenino , Hospitalización , Humanos , Análisis Multivariante , Embarazo , Complicaciones del Embarazo , Complicaciones Cardiovasculares del Embarazo , Factores de Riesgo , Adulto Joven
9.
J Evol Biol ; 27(10): 2258-64, 2014 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-25228433

RESUMEN

Telomeres have recently been suggested to play important role in ageing and are considered to be a reliable ageing biomarkers. The life history theory predicts that costs of reproduction should be expressed in terms of accelerated senescence, and some empirical studies do confirm such presumption. Thus, a link between reproductive effort and telomere dynamics should be anticipated. Recent studies have indeed demonstrated that reproduction may trigger telomere loss, but actual impact of reproductive effort has not received adequate attention in experimental studies. Here, we experimentally manipulated reproductive effort by increasing the brood size in the wild blue tit (Cyanistes caeruleus). We show that parents attending enlarged broods experienced larger yearly telomere decay in comparison to control birds attending unaltered broods. In addition, we demonstrate that the change in telomere length differs between sexes, but this effect was independent from our treatment. To our knowledge, this is the first experimental study in the wild revealing that telomere dynamics may be linked to reproductive effort. Thus, telomere shortening may constitute one of the potential proximate mechanisms mediating the costs of reproduction.


Asunto(s)
Tamaño de la Nidada , Passeriformes/fisiología , Reproducción/fisiología , Telómero/genética , Envejecimiento , Animales , Femenino , Modelos Lineales , Longevidad , Masculino , Passeriformes/embriología , Passeriformes/genética , Estrés Fisiológico
12.
Int J Clin Pract ; 67(2): 170-80, 2013 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-23305478

RESUMEN

BACKGROUND: National and regional authorities in Scotland have introduced multiple measures to appreciably enhance prescribing efficiency for the proton pump inhibitors (PPIs), statins and renin-angiotensin inhibitor drugs. Generic oral risperidone recently became available in Scotland; however, schizophrenia is a complex disease with advice from respected authorities suggesting that treatment should be individualised. AIMS: To assess (i) changes in atypical antipsychotic drug (AAP) utilisation and expenditure following the availability of oral generic risperidone in Scotland; (ii) to determine (a) current INN prescribing rates for risperidone following generic availability and (b) decrease in expenditure/DDD for generic risperidone; (iii) to suggest additional measures that could possibly be introduced in Scotland to further enhance prescribing of generic AAPs; and (iv) to provide guidance to NHS Scotland as well as other European authorities on the implications. METHODS: Retrospective observational study and an interrupted time series design. RESULTS: No appreciable change in the utilisation patterns of risperidone pre- and postgeneric availability. Appreciable INN prescribing averaged 93-98% of total oral risperidone. Generic risperidone was 84% below prepatent loss prices by study end, reducing annual expenditure for oral risperidone in 2010 by GB£3.19mn compared with prepatent loss situation. However, overall expenditure on AAPs increased by 42% from 2005 to 2010. DISCUSSION: As expected, there was no change in utilisation patterns for risperidone, although potential to influence prescribing patterns. Continued high INN prescribing suggests no problems with generic risperidone in practice. Costs will start to decrease as more AAPs lose their patents (olanzapine and quetiapine). There is the possibility to accelerate this reduction through educational activities. CONCLUSION: There is potential to realise some savings with generic AAPs. However, this is limited by the complexity of the disease area. Any measures introduced must aim at increasing the prescribing of generic AAPs first line in suitable patients.


Asunto(s)
Antipsicóticos/uso terapéutico , Medicamentos Genéricos/uso terapéutico , Pautas de la Práctica en Medicina/estadística & datos numéricos , Antipsicóticos/economía , Utilización de Medicamentos , Medicamentos Genéricos/economía , Humanos , Pautas de la Práctica en Medicina/economía , Mecanismo de Reembolso , Estudios Retrospectivos , Risperidona/economía , Risperidona/uso terapéutico , Esquizofrenia/tratamiento farmacológico , Escocia
13.
J Psychiatr Ment Health Nurs ; 20(1): 1-8, 2013 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-22417206

RESUMEN

We must recognize the importance of increased understanding for maintaining patient dignity to expand earlier formulated knowledge about caring ethics. Illuminations of this topic can create conditions for changing and developing care, as well as making caregivers' preservation of dignity evident. The aim was to illuminate the meaning of maintenance of patient dignity in forensic care. A qualitative design with a phenomenological-hermeneutic approach was used to analyse and interpret focus group interviews with nurses in forensic care. In the text the meaning of maintenance of patient dignity was protection and respect but also brotherly humanity. Protection was shown outwards to cover or screen the patient and to guard against danger. The inner form was described as protecting the patients' needs and arousing the patients' protection resources. Respect was shown outwards to take the patient seriously and to show others that patients are to be reckoned with, inwards in teaching patients to create respect and in teaching patients to expect respect from others. Meeting patients with human brotherhood was shown in doing 'the little extra' and demonstrating human similarity. The new understanding will enable nurses to plan and provide professional care, based on caring science.


Asunto(s)
Actitud del Personal de Salud , Enfermería Forense/métodos , Trastornos Mentales/enfermería , Relaciones Enfermero-Paciente , Enfermeras y Enfermeros/psicología , Personeidad , Adulto , Empatía/fisiología , Grupos Focales/métodos , Humanos , Entrevistas como Asunto , Persona de Mediana Edad , Suecia
14.
J Evol Biol ; 26(1): 1-13, 2013 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-23240615

RESUMEN

Knowledge of the genetic variances and covariances of traits (the G-matrix) is fundamental for the understanding of evolutionary dynamics of populations. Despite its essential importance in evolutionary studies, empirical tests of the temporal stability of the G-matrix in natural populations are few. We used a 25-year-long individual-based field study on almost 7000 breeding attempts of the collared flycatcher (Ficedula albicollis) to estimate the stability of the G-matrix over time. Using animal models to estimate G for several time periods, we show that the structure of the time-specific G-matrices changed significantly over time. The temporal changes in the G-matrix were unpredictable, and the structure at one time period was not indicative of the structure at the next time period. Moreover, we show that the changes in the time-specific G-matrices were not related to changes in mean trait values or due to genetic drift. Selection, differences in acquisition/allocation patterns or environment-dependent allelic effects are therefore likely explanations for the patterns observed, probably in combination. Our result cautions against assuming constancy of the G-matrix and indicates that even short-term evolutionary predictions in natural populations can be very challenging.


Asunto(s)
Variación Genética , Genética de Población , Pájaros Cantores/genética , Animales , Flujo Genético , Modelos Genéticos , Análisis Multivariante , Selección Genética , Suecia , Factores de Tiempo
15.
Intern Med J ; 42(5): 562-9, 2012 May.
Artículo en Inglés | MEDLINE | ID: mdl-22616960

RESUMEN

The Australian Clinical Guidelines for Stroke Management 2010 represents an update of the Clinical Guidelines for Stroke Rehabilitation and Recovery (2005) and the Clinical Guidelines for Acute Stroke Management (2007). For the first time, they cover the whole spectrum of stroke, from public awareness and prehospital response to stroke unit and stroke management strategies, acute treatment, secondary prevention, rehabilitation and community care. The guidelines also include recommendations on transient ischaemic attack. The most significant changes to previous guideline recommendations include the extension of the stroke thrombolysis window from 3 to 4.5 h and the change from positive to negative recommendations for the use of thigh-length antithrombotic stockings for deep venous thrombosis prevention and the routine use of prolonged positioning for contracture management.


Asunto(s)
Continuidad de la Atención al Paciente/normas , Guías de Práctica Clínica como Asunto/normas , Accidente Cerebrovascular/terapia , Continuidad de la Atención al Paciente/tendencias , Manejo de la Enfermedad , Humanos , Accidente Cerebrovascular/diagnóstico , Accidente Cerebrovascular/epidemiología , Resultado del Tratamiento
16.
HIV Med ; 13(4): 193-201, 2012 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-22107359

RESUMEN

BACKGROUND: Pharmacokinetic variability of the nonnucleoside reverse transcriptase inhibitor efavirenz has been documented, and high variation in trough concentrations or clearance has been found to be a risk for virological failure. Africans population exhibits greater variability in efavirenz concentrations than other ethnic groups, and so a better understanding of the pharmacokinetics of the drug is needed in this population. This study characterized efavirenz pharmacokinetics in HIV-infected Ugandans. METHODS: Efavirenz plasma concentrations were obtained for 66 HIV-infected Ugandans initiating efavirenz- based regimens, with blood samples collected at eight time-points over 24 h on day 1 of treatment, and at a further eight time-points on day 14. Noncompartmental analysis was used to describe the pharmacokinetics of efavirenz. RESULTS: The mean steady-state minimum plasma concentration (C(min) ) of efavirenz was 2.9 µg/mL, the mean area under the curve (AUC) was 278.5 h µg/mL, and mean efavirenz clearance was 7.4 L/h. Although overall mean clearance did not change over the 2 weeks, 41.9% of participants showed an average 95.8% increase in clearance. On day 14, the maximum concentration (C(max) ) of efavirenz was >4 µg/mL in 96.6% of participants, while C(min) was <1 µg/mL in only 4.5%. Overall, 69% of participants experienced adverse central nervous system (CNS) symptoms attributable to efavirenz during the 2-week period, and 95% of these participants were found to have efavirenz plasma concentrations >4 µg/mL, although only half maintained a high concentration until at least 8 h after dosing. CONCLUSION: The findings of this study show that HIV-infected patients on efavirenz may exhibit autoinduction to various extents, and this needs to be taken into consideration in the clinical management of individual patients. Efavirenz CNS toxicity during the initial phase of treatment may be related to C(max) , regardless of the sampling time.


Asunto(s)
Benzoxazinas/farmacocinética , Infecciones por VIH/metabolismo , Inhibidores de la Transcriptasa Inversa/farmacocinética , Adulto , Alquinos , Área Bajo la Curva , Ciclopropanos , Femenino , Infecciones por VIH/tratamiento farmacológico , Semivida , Humanos , Masculino , Tasa de Depuración Metabólica , Persona de Mediana Edad , Uganda , Adulto Joven
17.
Afr Health Sci ; 11(1): 72-8, 2011 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-21572860

RESUMEN

INTRODUCTION: The burden of both community and hospital acquired adverse drug reactions (ADRs) are some of the important issues in pharmacotherapy. At the time of this study there was very scanty literature in this area from Africa. OBJECTIVE: This study was done to determine the frequency and characteristics of ADRs in patients admitted on medical wards in public hospitals. METHODS: This was a longitudinal observational study on 728 adult patients on medical wards in one regional and one district hospitals. Community and hospital acquired ADRs were assessed. RESULTS: Thirty three patients (4.5%) were admitted with suspected ADR, and an ADR was the reason for hospitalization in 1.5%. Most ADRs were due to antiparasitic products, mainly quinine (61%). Community acquired ADRs prolonged hospital stay, 5.6 days vs 4.0 days (p-value < 0.001). During hospitalization ADRs occurred in 49.5% of the patients. Antiparasitic products, predominantly quinine, were the commonest drugs class associated with ADRs (85.9%). Hospital acquired ADRs did not affect hospital stay, 4.2 days vs 3.9 (p-value 0.129). CONCLUSION: ADRs are an important cause of morbidity in patients, both in the community and in hospitals, and the majority are associated with the commonly used drugs.


Asunto(s)
Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/epidemiología , Hospitalización/estadística & datos numéricos , Admisión del Paciente/estadística & datos numéricos , Adulto , Distribución por Edad , Antiparasitarios/efectos adversos , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/etiología , Femenino , Unidades Hospitalarias , Hospitales Públicos , Humanos , Medicina Interna , Estudios Longitudinales , Masculino , Morbilidad , Uganda/epidemiología
18.
Afr Health Sci ; 11(3): 493-8, 2011 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-22275945

RESUMEN

INTRODUCTION: Provision of access to drug information by prescribers and other health care professionals is important in pharmacotherapy. At the time of this study there was very scanty literature in this area from Africa. OBJECTIVE: To assess use of a pilot drug information centre (DIC) which was set up in a department of Pharmacology and Therapeutics in a university teaching hospital in Uganda. METHODS: This was a situational analysis with a prospective study design. The pilot DIC was established and its use over an eleven-month period was assessed. The received queries were evaluated for source of the query, reason for the query and type of query. RESULTS: During the 11 months 297 queries were received, 72.3% of which were from public hospitals. Most were from prescribing doctors (54.2%). Majority were on drug-drug interaction (41.2%), followed by therapy (23.2%). Out of 197 specific drug requests, 65.5% were on antiretroviral. CONCLUSION: We found that healthcare professionals were enthusiastically using the drug information centre. It is, therefore, necessary and feasible to establish a DIC in Uganda that will enable these professionals to readily access drug information.


Asunto(s)
Servicios de Información sobre Medicamentos/estadística & datos numéricos , Humanos , Proyectos Piloto , Estudios Prospectivos , Uganda
19.
J Evol Biol ; 23(6): 1286-92, 2010 Jun 01.
Artículo en Inglés | MEDLINE | ID: mdl-20456564

RESUMEN

Here, we aimed at estimating sex-specific heritabilities of cell-mediated immune response (CMI) in the blue tit nestlings (Cyanistes caeruleus). To separate genetic and environmental components of the phenotypic variance in CMI (measured using phytohaemagglutinin assay), we performed a cross-fostering experiment. Additionally, controlled environmental variation was introduced by enlarging some broods. Our analyses revealed a significant genetic component (as approximated by the nest-of-origin term) of the phenotypic variance in immune response. More importantly, these genetic effects differed between sexes and experimentally manipulated brood sizes, as indicated by significant genotype-by-sex and genotype-by-environment interactions. We discuss possible causes of such sexual dimorphism in gene expression and suggest that sex- and environment-specific genetic interactions may contribute to the maintenance of genetic variability in traits related to immune functions.


Asunto(s)
Aves/inmunología , Inmunidad Celular , Factores Sexuales , Animales , Femenino , Masculino
20.
Acta Physiol (Oxf) ; 199(2): 231-41, 2010 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-20121712

RESUMEN

AIM: Adenosine modulates neurotransmission and in the intestine adenosine is continuously released both from nerves and from smooth muscle. The main effect is modulation of contractile activity by inhibition of neurotransmitter release and by direct smooth muscle relaxation. Estimation of adenosine concentration at the receptors is difficult due to metabolic inactivation. We hypothesized that endogenous adenosine concentrations can be calculated by using adenosine receptor antagonist and agonist and dose ratio (DR) equations. METHODS: Plexus-containing guinea-pig ileum longitudinal smooth muscle preparations were made to contract intermittently by electrical field stimulation in organ baths. Schild plot regressions were constructed with 2-chloroadenosine (agonist) and 8-(p-sulfophenyl)theophylline (8-PST; antagonist). In separate experiments the reversing or enhancing effect of 8-PST and the inhibiting effect of 2-chloroadenosine (CADO) were analysed in the absence or presence of an adenosine uptake inhibitor (dilazep), and nucleoside overflow was measured by HPLC. RESULTS: Using the obtained DR, baseline adenosine concentration was calculated to 28 nm expressed as CADO activity, which increased dose dependently after addition of 10(-6) m dilazep to 150 nm (P < 0.05). HPLC measurements yielded a lower fractional increment (80%) in adenosine during dilazep, than found in the pharmacological determination (440%). CONCLUSION: Endogenous adenosine is an important modulator of intestinal neuro-effector activity, operating in the linear part of the dose-response curve. Other adenosine-like agonists might contribute to neuromodulation and the derived formulas can be used to calculate endogenous agonist activity, which is markedly affected by nucleoside uptake inhibition. The method described should be suitable for other endogenous signalling molecules in many biological systems.


Asunto(s)
Adenosina/metabolismo , Íleon/metabolismo , Receptores Purinérgicos P1/metabolismo , 2-Cloroadenosina/farmacología , Adenosina/agonistas , Adenosina/antagonistas & inhibidores , Animales , Dilazep/farmacología , Relación Dosis-Respuesta a Droga , Cobayas , Íleon/efectos de los fármacos , Masculino , Contracción Muscular/efectos de los fármacos , Transmisión Sináptica/efectos de los fármacos , Transmisión Sináptica/fisiología , Teofilina/análogos & derivados , Teofilina/farmacología , Vasodilatadores/farmacología
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