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1.
Clin Immunol ; 176: 114-121, 2017 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-28131926

RESUMEN

Administration of Glutamic Acid Decarboxylase (GAD)65 formulated in aluminium hydroxide preserved insulin secretion in a phase II trial in recent onset Type 1 Diabetes. A subsequent European phase III trial was closed at 15months after failing to reach primary endpoint, but the majority of the Swedish patients completed the 21months follow-up. We studied the frequencies and phenotype of T cells, suppressive capacity of Tregs, GAD65-induced proliferation, and frequencies of T cells with a GAD65-specific TCR in Swedes participating in the trial. Stimulation with GAD65 induced activated T cells and also cells with a suppressive phenotype. Activated GAD65-specific effector T cells were detected by tetramer staining while the frequency of GAD65-specific Treg was not affected by the treatment. Additional doses of GAD-alum increased frequencies of CD25+CD127+, but had no effect on CD25hiCD127lo. Our findings indicate that GAD-alum treatment primarily induced activated T cells. GAD65-specific cells were mainly of activated phenotype.


Asunto(s)
Diabetes Mellitus Tipo 1/tratamiento farmacológico , Diabetes Mellitus Tipo 1/inmunología , Glutamato Descarboxilasa/administración & dosificación , Linfocitos T Reguladores/efectos de los fármacos , Linfocitos T Reguladores/inmunología , Adolescente , Adulto , Niño , Método Doble Ciego , Femenino , Estudios de Seguimiento , Humanos , Subunidad alfa del Receptor de Interleucina-2/inmunología , Subunidad alfa del Receptor de Interleucina-7/inmunología , Activación de Linfocitos/efectos de los fármacos , Activación de Linfocitos/inmunología , Masculino , Suecia , Adulto Joven
2.
Acta Orthop ; 88(3): 341-347, 2017 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-28266233

RESUMEN

Purpose - We wanted to examine the potential of the Scandinavian Sarcoma Group (SSG) Central Register, and evaluate referral and treatment practice for soft-tissue sarcomas in the extremities and trunk wall (STS) in the Nordic countries. Background - Based on incidence rates from the literature, 8,150 (7,000-9,300) cases of STS of the extremity and trunk wall should have been diagnosed in Norway, Finland, Iceland, and Sweden from 1987 through 2011. The SSG Register has 6,027 cases registered from this period, with 5,837 having complete registration of key variables. 10 centers have been reporting to the Register. The 5 centers that consistently report treat approximately 90% of the cases in their respective regions. The remaining centers have reported all the patients who were treated during certain time periods, but not for the entire 25-year period. Results - 59% of patients were referred to a sarcoma center untouched, i.e. before any attempt at open biopsy. There was an improvement from 52% during the first 5 years to 70% during the last 5 years. 50% had wide or better margins at surgery. Wide margins are now achieved less often than 20 years ago, in parallel with an increase in the use of radiotherapy. For the centers that consistently report, 97% of surviving patients are followed for more than 4 years. Metastasis-free survival (MFS) increased from 67% to 73% during the 25-year period. Interpretation - The Register is considered to be representative of extremity and trunk wall sarcoma disease in the population of Scandinavia, treated at the reporting centers. There were no clinically significant differences in treatment results at these centers.


Asunto(s)
Sarcoma/terapia , Neoplasias de los Tejidos Blandos/terapia , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Biopsia , Niño , Preescolar , Extremidades , Femenino , Humanos , Lactante , Recién Nacido , Masculino , Persona de Mediana Edad , Clasificación del Tumor , Recurrencia Local de Neoplasia/epidemiología , Derivación y Consulta/estadística & datos numéricos , Sistema de Registros , Sarcoma/diagnóstico , Sarcoma/epidemiología , Sarcoma/patología , Sarcoma/secundario , Países Escandinavos y Nórdicos/epidemiología , Neoplasias de los Tejidos Blandos/diagnóstico , Neoplasias de los Tejidos Blandos/epidemiología , Neoplasias de los Tejidos Blandos/patología , Torso
3.
Plant Cell ; 21(9): 2859-77, 2009 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-19794113

RESUMEN

A few membrane vesicle trafficking (SNARE) proteins in plants are associated with signaling and transmembrane ion transport, including control of plasma membrane ion channels. Vesicle traffic contributes to the population of ion channels at the plasma membrane. Nonetheless, it is unclear whether these SNAREs also interact directly to affect channel gating and, if so, what functional impact this might have on the plant. Here, we report that the Arabidopsis thaliana SNARE SYP121 binds to KC1, a regulatory K(+) channel subunit that assembles with different inward-rectifying K(+) channels to affect their activities. We demonstrate that SYP121 interacts preferentially with KC1 over other Kv-like K(+) channel subunits and that KC1 interacts specifically with SYP121 but not with its closest structural and functional homolog SYP122 nor with another related SNARE SYP111. SYP121 promoted gating of the inward-rectifying K(+) channel AKT1 but only when heterologously coexpressed with KC1. Mutation in any one of the three genes, SYP121, KC1, and AKT1, selectively suppressed the inward-rectifying K(+) current in Arabidopsis root epidermal protoplasts as well as K(+) acquisition and growth in seedlings when channel-mediated K(+) uptake was limiting. That SYP121 should be important for gating of a K(+) channel and its role in inorganic mineral nutrition demonstrates an unexpected role for SNARE-ion channel interactions, apparently divorced from signaling and vesicle traffic. Instead, it suggests a role in regulating K(+) uptake coordinately with membrane expansion for cell growth.


Asunto(s)
Proteínas de Arabidopsis/metabolismo , Arabidopsis/genética , Canales de Potasio de Rectificación Interna/metabolismo , Potasio/metabolismo , Proteínas Qa-SNARE/metabolismo , Animales , Arabidopsis/metabolismo , Proteínas de Arabidopsis/genética , Electrofisiología , Regulación de la Expresión Génica de las Plantas , Insectos , Activación del Canal Iónico , Mutación , Oocitos/metabolismo , Raíces de Plantas/genética , Raíces de Plantas/metabolismo , Canales de Potasio/genética , Canales de Potasio/metabolismo , Canales de Potasio de Rectificación Interna/genética , Proteínas Qa-SNARE/genética , ARN de Planta/genética , Xenopus
4.
J Clin Nurs ; 21(3-4): 311-21, 2012 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-21951323

RESUMEN

AIMS: To describe coping strategies and coping effectiveness in recipients with an implantable cardioverter defibrillator and to explore factors influencing coping. BACKGROUND: Implantable cardioverter defibrillators are documented as saving lives and are used to treat ventricular tachycardia and ventricular fibrillation. Despite the implantable cardioverter defibrillator not evidently interfering with everyday life, there is conflicting evidence regarding the psychosocial impact of an implantable cardioverter defibrillator implantation such as anxiety, depression, perceived control and quality of life and how these concerns may relate to coping. DESIGN: Cross-sectional multicentre design. METHODS: Individuals (n = 147, mean age 63 years, 121 men) who had lived with an implantable cardioverter defibrillator between 6-24 months completed the Jalowiec Coping Scale-60, Hospital Anxiety and Depression Scale, Control Attitude Scale and Quality of Life Index-Cardiac version. RESULTS: Implantable cardioverter defibrillators recipients seldom used coping strategies, and the coping strategies used were perceived as fairly helpful. Optimism was found to be the most frequently used (1·8 SD 0·68) and most effective (2·1 SD 0·48) coping strategy, and recipients perceived moderate control in life. Anxiety (ß = 3·5, p ≤ 0·001) and gender (ß = 12·3, p = 0·046) accounted for 26% of the variance in the total use of coping strategies, suggesting that the more symptoms of anxiety and being women the greater use of coping strategies. CONCLUSIONS: Most recipients with an implantable cardioverter defibrillator did not appraise daily concerns as stressors in need of coping and seem to have made a successful transition in getting on with their lives 6-24 months after implantation. Relevance to clinical practice. Nurses working with recipients with an implantable cardioverter defibrillator should have a supportive communication so that positive outcomes such as decreased anxiety and increased perceived control and quality of life can be obtained. Through screening for anxiety at follow-up in the outpatient clinic, these recipients perceiving mental strain in their daily life can be identified.


Asunto(s)
Adaptación Psicológica , Desfibriladores Implantables/psicología , Estudios Transversales , Femenino , Humanos , Masculino , Persona de Mediana Edad
5.
Scand J Caring Sci ; 26(1): 203-8, 2012 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-21777263

RESUMEN

The patients' sexual life after a myocardial infarction is important for his/her quality of life. In spite of this, many patients are in doubt regarding their sex life after a myocardial infarction (MI) and the sexual information received, and counselling from health care providers has been seen to be insufficient. The purpose of this study was to evaluate the psychometric properties of 'The 25-item Sex after MI Knowledge Test' in a Swedish context. A convenience sample was recruited. The scale was translated into Swedish and completed by 79 former patients from The Heart and Lung Patients' National Association on two occasions, with an interval of 2 weeks. The scale was tested for face and content validity, internal consistency and test-retest reliability. The result in this study indicates that the instrument has good face and content validity and displayed a moderate internal consistency (alpha 0.61). The instrument showed some level of instability in test-retest reliability with 60% of the items presenting moderate or strong agreement between the test and retest. Further studies that use this instrument in larger and more diverse samples are thus needed.


Asunto(s)
Conocimientos, Actitudes y Práctica en Salud , Infarto del Miocardio/rehabilitación , Sexualidad , Encuestas y Cuestionarios , Anciano , Femenino , Humanos , Masculino , Psicometría , Reproducibilidad de los Resultados , Suecia
6.
J Clin Nurs ; 20(17-18): 2600-8, 2011 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-20964752

RESUMEN

AIM: To describe the clinical aspects of implantable cardioverter defibrillators care in Sweden with focus on organisation, the role and education of nurses, patient information and education and areas in need of improvement. BACKGROUND: Implantable cardioverter defibrillators implantations have developed rapidly in recent years and are now an established arrhythmia treatment. The expanding indication for implantable cardioverter defibrillators implantation demands new competencies and resources in the implantable cardioverter defibrillators team members. METHODS: Participants were recruited among physicians and nurses in all of the hospitals implanting implantable cardioverter defibrillators (n = 16). Data were collected by a questionnaire. Additionally, all written educational materials provided to patients pre- and postimplant were collected from all 16 hospitals. Deductive content analysis using Sarvimäki and Stenbock-Hult's five holistic dimensions was employed to ascertain how information was provided in brochures and information materials. RESULTS: Half of the hospitals (n=8) had nurse-based outpatient clinics and several others planned to introduce them. Three hospitals carried out distance follow-ups by means of tele-monitoring. The nurses had received specific implantable cardioverter defibrillators education from implantable cardioverter defibrillators companies and/or various university courses. The biophysical dimension dominated in the information material, while the emotional, intellectual and socio-cultural dimensions were scarcely described, and the spiritual-existential was not referred to at all. CONCLUSION: Holistic care of implantable cardioverter defibrillators patients can be achieved by means of a multidisciplinary implantable cardioverter defibrillators team and more patient-centred educational strategies. In Sweden, the organisation of implantable cardioverter defibrillators care and follow-up is developing towards more nurse-based clinics. RELEVANCE TO CLINICAL PRACTICE: Development and implementation of structured care programmes with a more holistic approach can improve future implantable cardioverter defibrillators care. The content of the written educational materials need to be more holistic, rather than mainly focusing on the biophysical and technical aspects of living with an implantable cardioverter defibrillators.


Asunto(s)
Desfibriladores Implantables , Humanos , Educación del Paciente como Asunto , Encuestas y Cuestionarios , Suecia
7.
Front Immunol ; 12: 628564, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34211456

RESUMEN

Neutrophil extracellular traps (NETs) and mitochondrial DNA (mtDNA) are inflammatory mediators involved in the development of type 1 diabetes (T1D). Pancreas-infiltrating neutrophils can release NETs, contributing to the inflammatory process. Levels of NETs are increased in serum from patients with T1D and mtDNA is increased in adult T1D patients. Our aim was to investigate extracellular DNA (NETs, mtDNA and nuclear DNA) in children with newly diagnosed T1D and in children at high risk of the disease. We also elucidated if extracellular DNA short after diagnosis could predict loss of endogenous insulin production. Samples were analysed for mtDNA and nuclear DNA using droplet digital PCR and NETs were assessed by a NET-remnants ELISA. In addition, in vitro assays for induction and degradation of NETs, as well as analyses of neutrophil elastase, HLA genotypes, levels of c-peptide, IL-1beta, IFN and autoantibodies (GADA, IA-2A, IAA and ZnT8A) were performed. In serum from children 10 days after T1D onset there was an increase in NETs (p=0.007), mtDNA (p<0.001) and nuclear DNA (p<0.001) compared to healthy children. The elevated levels were found only in younger children. In addition, mtDNA increased in consecutive samples short after onset (p=0.017). However, levels of extracellular DNA short after onset did not reflect future loss of endogenous insulin production. T1D serum induced NETs in vitro and did not deviate in the ability to degrade NETs. HLA genotypes and autoantibodies, except for ZnT8A, were not associated with extracellular DNA in T1D children. Serum from children with high risk of T1D showed fluctuating levels of extracellular DNA, sometimes increased compared to healthy children. Therefore, extracellular DNA in serum from autoantibody positive high-risk children does not seem to be a suitable biomarker candidate for prediction of T1D. In conclusion, we found increased levels of extracellular DNA in children with newly diagnosed T1D, which might be explained by an ongoing systemic inflammation.


Asunto(s)
Núcleo Celular/genética , ADN Mitocondrial/sangre , ADN/sangre , Diabetes Mellitus Tipo 1/sangre , Trampas Extracelulares/metabolismo , Adolescente , Factores de Edad , Autoanticuerpos/sangre , Biomarcadores/sangre , Estudios de Casos y Controles , Niño , Diabetes Mellitus Tipo 1/genética , Diabetes Mellitus Tipo 1/inmunología , Femenino , Humanos , Estudios Longitudinales , Masculino , Medición de Riesgo , Factores de Riesgo , Regulación hacia Arriba
8.
Clin Immunol ; 137(1): 31-40, 2010 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-20580618

RESUMEN

We have previously shown that two injections of 20 µg GAD-alum to recent onset type 1 diabetic children induced GADA levels in parallel to preservation of insulin secretion. Here we investigated if boosted GADA induced changes in IgG1, 2, 3 and 4 subclass distributions or affected GAD(65) enzyme activity. We further studied the specific effect of GAD-alum through analyses of IA-2A, tetanus toxoid and total IgE antibodies. Serum from children receiving GAD-alum or placebo was collected pre-treatment and after 3, 9, 15 and 21 months. At 3 months a reduced percentage of IgG1 and increased IgG3/IgG4 were detected in GAD-alum treated. Further, IA-2A, IgE and tetanus toxoid antibodies, as well as GAD(65) enzyme activity, were unaffected confirming the specific effect of treatment. In the GAD-alum group, higher pre-treatment GADA were associated to more pronounced C-peptide preservation. The induced IgG3/IgG4 and reduced IgG1 suggest a Th2 deviation of the immune response.


Asunto(s)
Compuestos de Alumbre/uso terapéutico , Autoanticuerpos/inmunología , Diabetes Mellitus Tipo 1/inmunología , Diabetes Mellitus Tipo 1/terapia , Glutamato Descarboxilasa/metabolismo , Glutamato Descarboxilasa/uso terapéutico , Inmunidad Humoral/inmunología , Inmunoglobulina G/inmunología , Inmunoterapia Activa/métodos , Adyuvantes Inmunológicos/uso terapéutico , Adolescente , Anticuerpos/sangre , Anticuerpos/inmunología , Área Bajo la Curva , Autoanticuerpos/sangre , Biocatálisis/efectos de los fármacos , Péptido C/sangre , Niño , Diabetes Mellitus Tipo 1/enzimología , Método Doble Ciego , Glutamato Descarboxilasa/inmunología , Humanos , Sueros Inmunes/inmunología , Sueros Inmunes/farmacología , Inmunoglobulina E/sangre , Inmunoglobulina G/sangre , Toxoide Tetánico/inmunología , Resultado del Tratamiento
9.
J Cardiovasc Nurs ; 25(6): E1-E10, 2010.
Artículo en Inglés | MEDLINE | ID: mdl-20938245

RESUMEN

BACKGROUND AND OBJECTIVES: The implantable cardioverter defibrillator (ICD) is a lifesaving device for treating patients who have experienced (secondary prevention), or are likely to experience (primary prevention), sudden cardiac death due to ventricular arrhythmias. Individuals with an ICD are prohibited from driving for a restricted period after the implantation and after recurrence of a ventricular arrhythmia, which may affect the ICD recipient in daily life. The aim of this study was therefore to describe how ICD recipients perceive driving and the driving restriction. METHODS: Fourteen men and 6 women, aged 43 to 82 years, with driving restrictions due to both secondary and primary ICD indications, were interviewed. Data were analyzed using phenomenography. RESULTS: The analysis resulted in the main category, the individual's unique relationship to driving, based on the categories: (1) achieving adherence on driving restrictions, (2) emotional influence of driving restriction, and (3) altered views on driving. The information was sometimes conceived as insufficient and unclear, and the willingness to accept the restriction differed. The ICD recipients perceived a loss of independence and changed self-image. Some patients had changed their driving behavior because of uncertainty of their driving abilities or fear of having arrhythmias/shocks while driving. They had different views on their future driving. CONCLUSIONS: Handling driving restrictions after ICD implantation and shocks is a complex and delicate issue in clinical practice and should be addressed in a dialogue with the ICD recipient. More individualized and structured information and support should be given according to the ICD recipients' experiences and needs.


Asunto(s)
Arritmias Cardíacas/prevención & control , Conducción de Automóvil/legislación & jurisprudencia , Conducción de Automóvil/psicología , Desfibriladores Implantables/psicología , Accidentes de Tránsito/prevención & control , Adaptación Psicológica , Adulto , Anciano , Anciano de 80 o más Años , Miedo , Femenino , Humanos , Masculino , Persona de Mediana Edad , Autoimagen , Apoyo Social , Suecia
10.
Biochim Biophys Acta ; 1758(8): 1157-64, 2006 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-16884684

RESUMEN

Aquaporins are water channel proteins that facilitate the movement of water and other small solutes across biological membranes. Plants usually have large aquaporin families, providing them with many ways to regulate the water transport. Some aquaporins are regulated post-translationally by phosphorylation. We have previously shown that the water channel activity of SoPIP2;1, an aquaporin in the plasma membrane of spinach leaves, was enhanced by phosphorylation at Ser115 and Ser274. These two serine residues are highly conserved in all plasma membrane aquaporins of the PIP2 subgroup. In this study we have purified and characterized two protein kinases phosphorylating Ser115 and Ser274 in SoPIP2;1. By anion exchange chromatography, the Ser115 kinase was purified from the soluble protein fraction isolated from spinach leaves. The Ca2+-dependent Ser274 kinase was purified by peptide affinity chromatography using plasma membranes isolated from spinach leaves. When characterized, the Ser115 kinase was Mg2+-dependent, Ca2+-independent and had a pH-optimum at 6.5. In accordance with previous studies using the oocyte expression system, site-directed mutagenesis and kinase and phosphatase inhibitors, the phosphorylation of Ser274, but not of Ser115, was increased in the presence of phosphatase inhibitors while kinase inhibitors decreased the phosphorylation of both Ser274 and Ser115. The molecular weight of the Ser274 kinase was approximately 50 kDa. The identification and characterization of these two protein kinases is an important step towards elucidating the signal transduction pathway for gating of the aquaporin SoPIP2;1.


Asunto(s)
Acuaporinas/metabolismo , Membrana Celular/enzimología , Hojas de la Planta/enzimología , Proteínas de Plantas/aislamiento & purificación , Proteínas Quinasas/aislamiento & purificación , Spinacia oleracea/enzimología , Secuencia de Aminoácidos , Sitios de Unión , Cationes Bivalentes , Concentración de Iones de Hidrógeno , Magnesio/química , Datos de Secuencia Molecular , Fosforilación , Proteínas de Plantas/metabolismo , Proteínas Quinasas/metabolismo , Serina/metabolismo
11.
Biochem J ; 393(Pt 3): 645-55, 2006 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-16287426

RESUMEN

Gating of the outward-rectifying K+ channel TOK1 of Saccharomyces cerevisiae is controlled by membrane voltage and extracellular K+ concentration. Previous studies identified two kinetically distinct effects of K+, and site-mutagenic analysis associated these K+-dependencies with domains of the extracellular turrets of the channel protein. We have mapped the TOK1 pore domains to extant K+ channel crystal structures to target additional residues contributing to TOK1 gating. Leu270, located in the first pore domain of TOK1, was found to be critical for gating and its K+ sensitivity. Analysis of amino acid substitutions indicated that spatial position of the polypeptide backbone is a primary factor determining gating sensitivity to K+. The strongest effects, with L270Y, L270F and L270W, led to more than a 30-fold decrease in apparent K+ affinity and an inversion in the apparent K+-dependence of voltage-dependent gating compared with the wild-type current. A partial rescue of wild-type gating was obtained on substitution in the second pore domain with the double mutant L270D/A428Y. These, and additional results, demarcate extracellular domains that are associated with the K+-sensitivity of TOK1 and they offer primary evidence for a synergy in gating between the two pore domains of TOK1, demonstrating an unexpected degree of long-distance interaction across the mouth of the K+ channel.


Asunto(s)
Canales de Potasio/química , Canales de Potasio/metabolismo , Potasio/metabolismo , Proteínas de Saccharomyces cerevisiae/química , Proteínas de Saccharomyces cerevisiae/metabolismo , Secuencia de Aminoácidos , Sustitución de Aminoácidos , Animales , Activación Enzimática , Cinética , Modelos Moleculares , Mutación , Oocitos/metabolismo , Unión Proteica , Estructura Terciaria de Proteína , Xenopus laevis
12.
Clin Epigenetics ; 7: 91, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26339299

RESUMEN

BACKGROUND: Childhood stress leads to increased risk of many adult diseases, such as major depression and cardiovascular disease. Studies show that adults with experienced childhood stress have specific epigenetic changes, but to understand the pathways that lead to disease, we also need to study the epigenetic link prospectively in children. RESULTS: Here, we studied a homogenous group of 48 5-year-old children. By combining hair cortisol measurements (a well-documented biomarker for chronic stress), with whole-genome DNA-methylation sequencing, we show that high cortisol associates with a genome-wide decrease in DNA methylation and targets short interspersed nuclear elements (SINEs; a type of retrotransposon) and genes important for calcium transport: phenomena commonly affected in stress-related diseases and in biological aging. More importantly, we identify a zinc-finger transcription factor, ZNF263, whose binding sites where highly overrepresented in regions experiencing methylation loss. This type of zinc-finger protein has previously shown to be involved in the defense against retrotransposons. CONCLUSIONS: Our results show that stress in preschool children leads to changes in DNA methylation similar to those seen in biological aging. We suggest that this may affect future disease susceptibility by alterations in the epigenetic mechanisms that keep retrotransposons dormant. Future treatments for stress- and age-related diseases may therefore seek to target zinc-finger proteins that epigenetically control retrotransposon reactivation, such as ZNF263.

13.
FEBS Lett ; 537(1-3): 68-72, 2003 Feb 27.
Artículo en Inglés | MEDLINE | ID: mdl-12606033

RESUMEN

The aquaporin PM28A is one of the major integral proteins in spinach leaf plasma membranes. Phosphorylation/dephosphorylation of Ser274 at the C-terminus and of Ser115 in the first cytoplasmic loop has been shown to regulate the water channel activity of PM28A when expressed in Xenopus oocytes. To understand the mechanisms of the phosphorylation-mediated gating of the channel the structure of PM28A is required. In a first step we have used the methylotrophic yeast Pichia pastoris for expression of the pm28a gene. The expressed protein has a molecular mass of 32462 Da as determined by matrix-assisted laser desorption ionization-mass spectrometry, forms tetramers as revealed by electron microscopy and is functionally active when reconstituted in proteoliposomes. PM28A was efficiently solubilized from urea- and alkali-stripped Pichia membranes by octyl-beta-D-thioglucopyranoside resulting in a final yield of 25 mg of purified protein per liter of cell culture.


Asunto(s)
Acuaporinas/genética , Canales Iónicos/genética , Pichia/fisiología , Animales , Acuaporinas/fisiología , Acuaporinas/ultraestructura , Secuencia de Bases , Cartilla de ADN , Femenino , Canales Iónicos/fisiología , Canales Iónicos/ultraestructura , Cinética , Oocitos/fisiología , Fosforilación , Fosfoserina , Pichia/genética , Proteínas de Plantas/genética , Proteínas de Plantas/fisiología , Proteínas de Plantas/ultraestructura , Proteolípidos/metabolismo , Proteínas Recombinantes/aislamiento & purificación , Proteínas Recombinantes/metabolismo , Proteínas Recombinantes/ultraestructura , Serina , Espectrometría de Masa por Láser de Matriz Asistida de Ionización Desorción , Spinacia oleracea , Xenopus laevis
14.
Heart Lung ; 33(5): 291-300, 2004.
Artículo en Inglés | MEDLINE | ID: mdl-15454908

RESUMEN

OBJECTIVE: The study's objective was to describe symptoms, symptom management, and patient delay times in patients seeking treatment for suspected acute myocardial infarction (AMI), and to find explanatory factors influencing the decision time. METHOD: This is a descriptive survey study including 403 Swedish patients with a median age of 64 years with suspected AMI. RESULTS: Altogether, 84% of the patients suspected that the symptoms emanated from the heart. Despite this fact, 59% delayed going to the hospital more than 1 hour after the onset of symptoms. In the multiple regression analysis, a "dull pain," the patients' belief that it was nothing serious, and contact with the general practitioner were associated with prolonged delay. The decision to contact the emergency service shortened the delay time. CONCLUSIONS: The patient's subjective feeling of the severity of symptoms is an important predictor for delay times. There is still a need for public awareness of the appropriate responses to AMI symptoms, that is, to call for an ambulance instead of contacting the general practitioner.


Asunto(s)
Infarto del Miocardio/terapia , Aceptación de la Atención de Salud , Anciano , Toma de Decisiones , Femenino , Humanos , Masculino , Persona de Mediana Edad , Infarto del Miocardio/diagnóstico , Infarto del Miocardio/psicología , Factores de Tiempo
15.
Heart Lung ; 40(5): 420-8, 2011.
Artículo en Inglés | MEDLINE | ID: mdl-21459446

RESUMEN

OBJECTIVE: The study objective was to explore the main concern of individuals living with an implantable cardioverter defibrillator (ICD) and how they handle this in daily life. For improved management and follow-up, it is important to understand how the ICD affects the recipient's daily life. METHODS: A grounded theory method was used. Sixteen Swedish recipients (9 men) living with an ICD for 6 to 24 months were interviewed. RESULTS: The core category labeled, "Incorporating uncertainty in daily life," illuminates the main concern. To handle uncertainty, recipients used the following strategies: restricting activities, distracting oneself, accepting being an ICD recipient, and reevaluating life. CONCLUSION: Recipients were not paralyzed by uncertainty. Instead, they incorporated uncertainty in life by using strategies to handle their daily life. Questions, comments, and plans for supportive communication were provided, which can be used by healthcare professionals in cardiac rehabilitation.


Asunto(s)
Desfibriladores Implantables/psicología , Satisfacción del Paciente , Incertidumbre , Adaptación Psicológica , Femenino , Conocimientos, Actitudes y Práctica en Salud , Humanos , Entrevista Psicológica , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Psicometría , Investigación Cualitativa , Estrés Psicológico , Suecia
16.
Eur J Cardiovasc Nurs ; 10(2): 130-6, 2011 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-20620118

RESUMEN

BACKGROUND: The optimal length of bed rest after femoral coronary angiography is still unknown. Short immobilisation could cause puncture site complications due to the modern antiplatelet therapy used, while long immobilisation time increases the risk of back pain for the patient. PURPOSE: To assess the safety, as well as perceived comfort, of early mobilisation after coronary angiography with femoral approach. METHODS: A randomised, single centre pilot trial with 104 coronary angiography patients (including 58 patients with non ST-elevation acute coronary syndrome) assigned to a post-procedural bed rest time for either 1.5 or 5 h. The primary endpoint was any incidence of vascular complication. Patients' discomfort was measured as self-perceived grade of pain in the back. RESULTS: The presence of haematomas ≥ 5 cm was 5.8% in the short immobilisation group vs. 3.8% in the control group (ns). There was a significantly lower rate of perceived back pain in the short immobilisation group, compared to the controls, at the time of mobilisation, which remained significant also after 2 h of mobilisation. CONCLUSION: Early ambulation after coronary angiography is safe, without affecting the incidence of vascular complications, and decreases the patients' pain, both during and after the bed rest.


Asunto(s)
Dolor de Espalda/prevención & control , Angiografía Coronaria/efectos adversos , Ambulación Precoz , Hematoma/prevención & control , Isquemia Miocárdica/diagnóstico por imagen , Dolor Postoperatorio/prevención & control , Anciano , Dolor de Espalda/etiología , Reposo en Cama , Femenino , Arteria Femoral , Hematoma/etiología , Humanos , Masculino , Persona de Mediana Edad , Isquemia Miocárdica/complicaciones , Dolor Postoperatorio/etiología , Proyectos Piloto , Cuidados Posoperatorios
17.
Eur J Cardiovasc Nurs ; 9(3): 168-74, 2010 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-20071238

RESUMEN

BACKGROUND: As part of preparation for a Swedish multicentre study, exploring sexual and married life in patients with myocardial infarction and their partners, a Swedish validated instrument was required. AIMS: The aim of this pilot study was to evaluate the validity and reliability of a Swedish version of the Watts Sexual Function Questionnaire (WSFQ) among persons with a heart disease. METHODS: A convenience sample of 79 persons (47 men and 32 women) living with a heart disease was recruited from the members of the National Association of Heart and Lung Patients. They completed a Swedish version of the WSFQ on two occasions. RESULTS: Two separate factor analyses each revealed a two-factor structure on both occasions: "Sexual appetite" and "Sexual expectations" with gender-neutral questions and "Sexual sensitiveness" and "Sexual ability" with gender-specific questions. Cronbach's alpha coefficients ranged from 0.48 to 0.86 and test-retest values for all but one question exceeded 0.70. CONCLUSIONS: The Swedish version of the WSFQ showed good validity and stability and acceptable internal homogeneity. Extended evaluations of the questionnaire are recommended.


Asunto(s)
Cardiopatías , Conducta Sexual , Encuestas y Cuestionarios , Nivel de Alerta/fisiología , Análisis Factorial , Femenino , Cardiopatías/fisiopatología , Cardiopatías/psicología , Humanos , Masculino , Erección Peniana/fisiología , Proyectos Piloto , Psicometría , Calidad de Vida , Suecia
18.
Gend Med ; 6(3): 444-53, 2009 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-19850240

RESUMEN

BACKGROUND: Identifying early warning signs of an acute myocardial infarction (AMI) may aid in the early diagnosis of coronary artery disease. OBJECTIVES: This study was conducted to assess early warning signs (prodromal symptoms) of AMI, with comparisons made by gender. Another aim was to determine whether these early warning signs had any influence on the patients' acute symptoms of AMI. METHODS: This was a multicenter, cross-sectional study of Norwegian patients (aged 5 times higher in women who had experienced prodromal symptoms in the chest (adjusted odds ratio [OR] = 5.11; 95% CI, 1.38-18.88) and nearly 3 times higher in men (OR = 2.80; 95% CI, 1.17-6.70). The risk of experiencing shoulder or back pain was almost 5 times higher in men with prodromal shoulder or back pain (OR = 4.96; 95% CI, 3.01-8.19), but no statistically significant association was found in women. The risk of experiencing radiating arm pain or numbness in the acute phase was more than doubled in women with prodromal arm pain (OR = 2.68; 95% CI, 1.19-6.20) and more than tripled in men with prodromal arm pain (OR = 3.11; 95% CI, 1.90-5.07). The risk of experiencing dyspnea in the acute phase was more than doubled in women with prodromal dyspnea (OR = 2.67; 95% CI, 1.25-5.71) and >5 times higher in men with prodromal dyspnea (OR = 5.73; 95% CI, 3.42-9.62). Finally, the risk of fatigue was almost tripled in women (OR = 2.97; 95% CI, 1.28-6.85) and more than doubled in men (OR = 2.51; 95% CI, 1.54-4.11). Hypertensive women, but not men, were less likely to experience chest symptoms in the acute phase (OR = 0.29; 95% CI, 0.10-0.82). CONCLUSIONS: Almost half of the study patients (45%) experienced prodromal chest symptoms the year before their first AMI. These prodromal symptoms predicted the symptoms that occurred during the acute stage of AMI, with some differences between the sexes.


Asunto(s)
Enfermedad de la Arteria Coronaria/diagnóstico , Infarto del Miocardio/diagnóstico , Anciano , Anciano de 80 o más Años , Dolor en el Pecho/complicaciones , Estudios Transversales , Recolección de Datos , Disnea/complicaciones , Fatiga/complicaciones , Femenino , Humanos , Masculino , Infarto del Miocardio/complicaciones , Factores Sexuales
19.
Eur J Cardiovasc Nurs ; 7(3): 182-8, 2008 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-18164249

RESUMEN

BACKGROUND: Delay from onset of acute myocardial infarction symptoms to the delivery of medical care is a major determinant of prognosis. Although studies have explored patient reasons for delay, there are only limited data concerning experiences of the spouse. AIM: Was to describe spouses' conceptions of the pre-hospital phase when their partners suffered an acute myocardial infarction. METHOD: A phenomenographic approach was applied. Fifteen spouses were interviewed <48 h after the partner's hospital admittance. FINDINGS: Two categories with underlying sub-categories conceptualised the spouses' experiences. The category being resourceful contained: sharing the experience, having knowledge, understanding the severity, being rational, and consulting others. The category respecting independence contained: accepting the need for control, marital roles and experiences, restraining emotions, and seeking agreement. CONCLUSION: Our findings suggest that spouses have a strong influence on the course of events. When accepting the partner's need for control through following earlier marital roles and experiences, restraining own emotions and seeking agreement, this seemed to contribute to delay. However, when the spouse was resourceful by sharing the experience, having knowledge, understanding the severity, being rational and consulting others when needed, this seemed to have a positive influence on the pre-hospital time.


Asunto(s)
Toma de Decisiones , Infarto del Miocardio , Aceptación de la Atención de Salud , Esposos , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Persona de Mediana Edad , Infarto del Miocardio/psicología , Esposos/psicología , Suecia , Factores de Tiempo
20.
Eur J Cardiovasc Nurs ; 6(3): 184-91, 2007 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-16997634

RESUMEN

BACKGROUND: Delay in seeking care remains a problem for many patients with myocardial infarction. There is a great deal of knowledge available about clinical factors contributing to this delay, while studies focusing on the patients' own experiences are few. AIM: Describe variations in how individuals perceived suffering symptoms of an acute myocardial infarction. DESIGN: A qualitative method using phenomenographic design was applied. Interviews were conducted with 15 strategically selected patients with myocardial infarction. FINDINGS: Eight sub-categories in the pre-hospital phase were summarised into three categories: manageability, vulnerability, and interaction. To manage their situation, patients expressed a need to understand it and to have a similar situation to compare with. They also described coping with the arising threat to their lives by self-medication or denying their symptoms. Patients expressed vulnerability, with feelings of anxiety, both as triggers and barriers to seeking medical care. In interaction with others, psychosocial support and guidance from the environment, was fundamental in helping the patients to manage the situation. CONCLUSIONS: There were large variations in myocardial infarction patients' conceptions of the event. To improve disease management in the pre-hospital phase, the awareness of this large variation in conceptions about suffering symptoms of an myocardial infarction could be used in the dialogue between patients and health care professionals, in cardiac prevention programmes, as well as in health care education.


Asunto(s)
Adaptación Psicológica , Infarto del Miocardio/psicología , Aceptación de la Atención de Salud/psicología , Relaciones Profesional-Paciente , Poblaciones Vulnerables/psicología , Adulto , Anciano , Anciano de 80 o más Años , Ansiedad/etiología , Ansiedad/psicología , Toma de Decisiones , Negación en Psicología , Femenino , Necesidades y Demandas de Servicios de Salud , Humanos , Masculino , Persona de Mediana Edad , Infarto del Miocardio/prevención & control , Investigación Metodológica en Enfermería , Investigación Cualitativa , Autocuidado/métodos , Autocuidado/psicología , Autoeficacia , Índice de Severidad de la Enfermedad , Apoyo Social , Encuestas y Cuestionarios , Suecia
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