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1.
Encephale ; 47(4): 314-318, 2021 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-33541713

RESUMEN

OBJECTIVE: To assess: (1) the association between insomnia experienced at admission, sociodemographic and other patients' characteristics and mania; and (2) the variation of insomnia and mania before and after treatment in bipolar patients with manic episodes (type I). METHODS: Sixty-two patients were interviewed shortly after their admission to the hospital (after 3 to 5 days). The current symptoms experienced by the patients were assessed upon admission and again at discharge from the hospital. RESULTS: A poorer quality of sleep (higher PSQI scores) (Beta=0.590) was significantly associated with higher mania, whereas the intake of SSRIs (Beta=-5.952) and TCAs (Beta=-8.181) was significantly associated with lower mania. Furthermore, highly significant reductions were reported in the PSQI scores (4.96 vs. 2.75, P<0.001), ISI scores (8.30 vs. 3.45, P<0.001) and YMRS scores (8.60 vs. 3.06, P<0.001) between admission to and discharge from the hospital. CONCLUSION: Insomnia in patients with bipolar disorder type I is associated with mania, with a significant reduction of sleep problems seen during a period of approximately 20 days of hospitalization. Further longitudinal studies are needed to confirm the validity of our results and identify the causes. In the meantime, this research recommends a strategy to improve sleeplessness experienced during inter-episode phases may be helpful in preventing manic episodes in BD.


Asunto(s)
Trastorno Bipolar , Trastornos del Inicio y del Mantenimiento del Sueño , Trastorno Bipolar/complicaciones , Trastorno Bipolar/tratamiento farmacológico , Trastorno Bipolar/epidemiología , Hospitalización , Humanos , Manía , Trastornos del Inicio y del Mantenimiento del Sueño/complicaciones , Trastornos del Inicio y del Mantenimiento del Sueño/epidemiología
4.
Artículo en Inglés | MEDLINE | ID: mdl-27012012

RESUMEN

BACKGROUND: Lipoxins could be potential modulators of inflammation in the lungs. To our knowledge, the role of exhaled breath condensate (EBC) lipoxin A4 (LXA4) in asthmatic children with exercise-induced bronchoconstriction (EIB) has not been investigated. OBJECTIVE: The aim of our study was to determine the involvement of EBC LXA4 in EIB. METHODS: Forty-five patients aged between 5 and 17 years were included in the study. Patients were divided into 2 groups: asthmatic children with a positive response to exercise (n = 17) and asthmatic children with a negative response to exercise (n = 28). Levels of LXA4 were determined in EBC before and immediately after the exercise challenge using ELISA. RESULTS: EBC LXA4 levels were significantly increased immediately after exercise in asthmatic children with a positive response to the exercise challenge (P = .05). No significant differences were observed in children with a negative response to exercise (P > .05). There was an inverse correlation between LXA4 levels and the percent degree of reduction in forced expiratory volume in the first second (FEV1%) postexercise in children with a positive exercise challenge (P = .05, r = -0.50). No significant differences were observed in LXA4 levels between atopic and nonatopic asthmatics (P > .05, Mann-Whitney U test). CONCLUSIONS: Levels of EBC LXA4 increased immediately after exercise in asthmatic children with a positive exercise challenge response. We hypothesize that airway LXA4 levels increase to compensate bronchoconstriction and suppress acute inflammation, and that spontaneous bronchodilatation after EIB may be due to LXA4.


Asunto(s)
Asma Inducida por Ejercicio/metabolismo , Pruebas Respiratorias , Broncoconstricción , Espiración , Mediadores de Inflamación/metabolismo , Lipoxinas/metabolismo , Pulmón/metabolismo , Adolescente , Factores de Edad , Asma Inducida por Ejercicio/diagnóstico , Asma Inducida por Ejercicio/fisiopatología , Biomarcadores/metabolismo , Estudios de Casos y Controles , Niño , Preescolar , Ensayo de Inmunoadsorción Enzimática , Prueba de Esfuerzo , Femenino , Volumen Espiratorio Forzado , Humanos , Pulmón/fisiopatología , Masculino , Valor Predictivo de las Pruebas , Estudios Prospectivos , Regulación hacia Arriba
5.
J. investig. allergol. clin. immunol ; 26(1): 19-24, 2016. tab, graf
Artículo en Inglés | IBECS | ID: ibc-150185

RESUMEN

Background: Lipoxins could be potential modulators of inflammation in the lungs. To our knowledge, the role of exhaled breath condensate (EBC) lipoxin A4 (LXA4) in asthmatic children with exercise-induced bronchoconstriction (EIB) has not been investigated. Objective: The aim of our study was to determine the involvement of EBC LXA4 in EIB. Methods: Forty-five patients aged between 5 and 17 years were included in the study. Patients were divided into 2 groups: asthmatic children with a positive response to exercise (n=17) and asthmatic children with a negative response to exercise (n=28). Levels of LXA4 were determined in EBC before and immediately after the exercise challenge using ELISA. Results: EBC LXA4 levels were significantly increased immediately after exercise in asthmatic children with a positive response to the exercise challenge (P=.05). No significant differences were observed in children with a negative response to exercise (P>.05). There was an inverse correlation between LXA4 levels and the percent degree of reduction in forced expiratory volume in the first second (FEV1%) postexercise in children with a positive exercise challenge (P=.05, r=-0.50). No significant differences were observed in LXA4 levels between atopic and nonatopic asthmatics (P>.05, Mann-Whitney U test). Conclusions: Levels of EBC LXA4 increased immediately after exercise in asthmatic children with a positive exercise challenge response. We hypothesize that airway LXA4 levels increase to compensate bronchoconstriction and suppress acute inflammation, and that spontaneous bronchodilatation after EIB may be due to LXA4 (AU)


Introducción: Las lipoxinas pueden actuar potencialmente como inmunomoduladores de la actividad inflamatoria en el pulmón. A nuestro entender, el papel de la lipoxina A4 (LXA4), determinada en condensado de aire exhalado (EBC) en niños asmáticos con broncoconstricción inducida por el ejercicio (BEI) no ha sido previamente investigado. Objetivo: El objetivo de nuestro estudio fue determinar la implicación de la LXA4 determinada en EBC, en el broncoespasmo inducido por ejercicio. Métodos: Se incluyeron en el estudio un total de cuarenta y cinco pacientes de edades comprendidas entre 5 y 17 años. Los pacientes se dividieron en dos grupos: niños asmáticos con respuestas positivas (n = 17) y negativas (n = 28) a la provocación bronquial con ejercicio. Los niveles de LXA4 en EBC se determinaron inmediatamente antes y después de la provocación bronquial mediante un método ELISA. Resultados: Los niveles de LXA4 en EBC aumentaron significativamente tras la provocación con ejercicio en aquellos niños asmáticos con respuestas positivas en la provocación (p = 0,05). Sin embargo, no pudimos encontrar ninguna diferencia estadísticamente significativa en pacientes con respuesta negativa al ejercicio (p > 0,05). Hubo una correlación inversa entre el incremento de los niveles de LXA4 y el grado de reducción porcentual del volumen espiratorio forzado en un segundo (FEV1%) en los pacientes con respuesta positiva a la provocación (p = 0,05, r = -0,50). No se observaron diferencias significativas en los niveles de LXA4 entre asmáticos alérgicos y no alérgicos (p> 0,05, prueba de Mann-Whitney). Conclusiones: Los niveles de EBC LXA4 se incrementan inmediatamente después de la broncoconstricción inducida por el ejercicio en niños asmáticos. Se postula que los niveles de las vías respiratorias aumentan LXA4 para suprimir la inflamación aguda en la vía respiratoria, y podrían ser responsables de la inducción de broncodilatación espontánea que aparece tras el EIB (AU)


Asunto(s)
Humanos , Masculino , Femenino , Niño , Adolescente , Broncoconstricción , Broncoconstricción/inmunología , Lipoxinas/metabolismo , Lipoxinas/uso terapéutico , Receptores de Lipoxina/uso terapéutico , Asma Inducida por Ejercicio/complicaciones , Asma Inducida por Ejercicio/tratamiento farmacológico , Asma Inducida por Ejercicio/inmunología , Ensayo de Inmunoadsorción Enzimática/instrumentación , Ensayo de Inmunoadsorción Enzimática/métodos , Pruebas de Provocación Bronquial/instrumentación , Pruebas de Provocación Bronquial/métodos
6.
Allergol. immunopatol ; 43(6): 538-542, nov-dic. 2015. tab
Artículo en Inglés | IBECS | ID: ibc-145498

RESUMEN

BACKGROUND AND OBJECTIVE: The pathogenesis of exercise-induced bronchoconstriction (EIB) in asthma is incompletely understood. The role of exhaled breath condensate (EBC) annexin A5, which is an anti-inflammatory mediator, has not been investigated. The purpose of this study is to evaluate EBC annexin A5 levels in EIB in asthmatic children. METHODS: Two groups of children were enrolled in this study: asthmatic children with positive (n = 11) and negative (n = 7) responses to exercise. The levels of pre- and post-exercise EBC annexin A5 were determined with using enzyme-linked immunosorbent assay (ELISA). RESULTS: We observed significant higher pre-exercise EBC annexin A5 levels in the challenge test negative children than in the challenge test positive children (p < 0.05). No significant difference was observed in the post-exercise EBC annexin A5 levels between the groups (p > 0.05). Also, no significant difference was observed between pre- and post-exercise EBC annexin A5 levels within each group (p > 0.05). There was an inverse correlation between annexin A5 levels and a reduction in forced expiratory volume at one second percent (FEV1%) (p = 0.009, r = −0.598). CONCLUSIONS: Our preliminary study showed that EBC annexin A5 may have a possible preventive role in EIB in asthma. Annexin A5 and related compounds may provide novel therapeutic approaches to the treatment of EIB in asthma


No disponible


Asunto(s)
Humanos , Masculino , Femenino , Niño , Adolescente , Anexina A5/metabolismo , Antiinflamatorios/metabolismo , Asma Inducida por Ejercicio/diagnóstico , Pruebas Respiratorias , Broncoconstricción , Espiración , Inmunización , Pruebas de Función Respiratoria
7.
Allergol Immunopathol (Madr) ; 43(6): 538-42, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-25796304

RESUMEN

BACKGROUND AND OBJECTIVE: The pathogenesis of exercise-induced bronchoconstriction (EIB) in asthma is incompletely understood. The role of exhaled breath condensate (EBC) annexin A5, which is an anti-inflammatory mediator, has not been investigated. The purpose of this study is to evaluate EBC annexin A5 levels in EIB in asthmatic children. METHODS: Two groups of children were enrolled in this study: asthmatic children with positive (n=11) and negative (n=7) responses to exercise. The levels of pre- and post-exercise EBC annexin A5 were determined with using enzyme-linked immunosorbent assay (ELISA). RESULTS: We observed significant higher pre-exercise EBC annexin A5 levels in the challenge test negative children than in the challenge test positive children (p<0.05). No significant difference was observed in the post-exercise EBC annexin A5 levels between the groups (p>0.05). Also, no significant difference was observed between pre- and post-exercise EBC annexin A5 levels within each group (p>0.05). There was an inverse correlation between annexin A5 levels and a reduction in forced expiratory volume at one second percent (FEV1%) (p=0.009, r=-0.598). CONCLUSIONS: Our preliminary study showed that EBC annexin A5 may have a possible preventive role in EIB in asthma. Annexin A5 and related compounds may provide novel therapeutic approaches to the treatment of EIB in asthma.


Asunto(s)
Anexina A5/metabolismo , Antiinflamatorios/metabolismo , Asma Inducida por Ejercicio/diagnóstico , Adolescente , Pruebas Respiratorias/métodos , Broncoconstricción , Niño , Preescolar , Espiración , Femenino , Humanos , Inmunización , Masculino , Pruebas de Función Respiratoria
8.
Eur Ann Allergy Clin Immunol ; 47(1): 20-1, 2015 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-25599555

RESUMEN

Anaphylaxis is a rapid onset serious allergic reaction which may be fatal. It is usually triggered by an agent such as a food, insect sting, or medication, through a mechanism involving immunoglobulin E (IgE) and the high-affinity IgE receptor on mast cells or basophils. Anaphylaxis has been rarely described which results from pollen antigen exposure. Here, we present unusual anaphylaxis, which results from inhaled pollen antigen in a 15-year-old boy.


Asunto(s)
Anafilaxia/etiología , Poaceae/inmunología , Polen/inmunología , Adolescente , Humanos , Masculino
9.
Eur Ann Allergy Clin Immunol ; 46(4): 152-3, 2014 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-25053633

RESUMEN

Prurigo is a condition of nodular cutaneous lesions that itch intensely. Prurigo lesions are divided into acute, subacute and chronic forms that itch intensely. Subacute prurigo (SP) clinically presents as excoriated papules mostly in a symmetrical distribution on the extensor surfaces of the extremities, neck, lower trunk, and buttocks. It tends to occur in middle-aged patients, especially in women. Herein, we described prurigo simplex subacuta in a 4-year-old boy. It was histopathologically documented.


Asunto(s)
Prurigo/patología , Prurito/patología , Preescolar , Humanos , Masculino
10.
Eur Ann Allergy Clin Immunol ; 46(1): 35-7, 2014 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-24702872

RESUMEN

Temporary tattoos, especially those that contain black dyes, have become rampant among teenagers in recent years. Most of these tattoos, in addition to hair dyes include paraphenylenediamine (PPD). PPD is a well-known skin sensitizer, which causes allergic contact dermatitis. Allergic contact dermatitis skin lesions from PPD are mostly seen as erythema multiforme-like eruption, a bullous contact dermatitis or as an exudative erythema. Herein, we report on our finding on a 15 year-old adolescent female who had been unaware of being previously sensitized to PPD from a black henna tattoo, and angioedema-like reaction which occurred after her first exposure to hair dye.


Asunto(s)
Angioedema/inducido químicamente , Dermatitis Alérgica por Contacto/etiología , Tinturas para el Cabello/efectos adversos , Fenilendiaminas/efectos adversos , Tatuaje/efectos adversos , Adolescente , Femenino , Humanos
11.
Eur Ann Allergy Clin Immunol ; 46(1): 60-2, 2014 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-24702880

RESUMEN

Hereditary angioedema (HEA) is a disease characterized by decreased levels or function of C1 esterase inhibitor (C1-INH). The symptoms of HEA in pediatric age group generally consist of recurrent episodes of soft tissue swelling. These symptoms can be transient, subtle, and varied in severity. Genitourinary system is rarely affected in this disease. Here, a three-year-old girl who presented with angioedema on her hands, fingers, and face, and had difficulty in urination and globe is reported. The aim of this case is to focus on this rare disease, hereditary angioedema, which presented with difficulty in urination and urinary globe.


Asunto(s)
Angioedemas Hereditarios/complicaciones , Trastornos Urinarios/etiología , Preescolar , Femenino , Humanos
13.
Eur Ann Allergy Clin Immunol ; 45(5): 176-7, 2013 Sep 01.
Artículo en Inglés | MEDLINE | ID: mdl-24129045

RESUMEN

Human recombinant erythropoietins (EPO) and darbepoetins are widely used for anemias associated with chronic kidney disease.  Allergic reactions to erythropoetins and darbepoetins have only occasionally been reported. These skin reactions include pruritus, wheals at the injection site, orofacial anaphylaxis and anjioedema. In this article, we report an 11 year-old female who experienced generalized   erithematous skin eruption and desquamation after both erythropoietin and darbepoetin treatments.  We successfully used darbepoetin with the support of premedication and desensitization.


Asunto(s)
Desensibilización Inmunológica , Hipersensibilidad a las Drogas/terapia , Eritropoyetina/análogos & derivados , Hematínicos/efectos adversos , Niño , Darbepoetina alfa , Eritropoyetina/efectos adversos , Femenino , Humanos
14.
Qual Life Res ; 21(4): 685-90, 2012 May.
Artículo en Inglés | MEDLINE | ID: mdl-21792732

RESUMEN

INTRODUCTION: The reliability and validity of Turkish version of Childhood Asthma Control Test (C-ACT). PURPOSE: The management of asthma is an important as well as difficult issue of physician's daily practice particularly in busy clinical settings. C-ACT was created to identify asthma control levels in children aged 4-11 years. Our aim was to evaluate the reliability, validity and responsiveness of C-ACT in a Turkish sample of children with asthma. METHOD: In this multicenter study, 368 children were enrolled. C-ACT was completed every month by parents and patients who were evaluated in 3 visits within 2 month intervals. At each visit, physicians interpret the control level and decided for the treatment step as established in GINA guidelines. RESULTS: The internal consistency reliability of the Turkish version of C-ACT (C-ACT1 to C-ACT5) was found to be 0.82, 0.83, 0.82, 0.82 and 0.80, respectively (reliability statistics, Cronbach's alpha). Test-retest reliability was 0.71. There was significant correlation between C-ACT and physician's assessment of asthma control at visit 1 (r = 0.65, P < 0.001). CONCLUSIONS: Turkish version of C-ACT is an accurate and reliable tool to evaluate asthma control in children aged 4-11 years. Its widespread use may facilitate appropriate assessment of asthma control and may lead to decrease the number of uncontrolled patients.


Asunto(s)
Asma/psicología , Calidad de Vida/psicología , Encuestas y Cuestionarios/normas , Niño , Femenino , Humanos , Masculino , Turquía
15.
Clin Exp Allergy ; 41(12): 1767-76, 2011 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-22092675

RESUMEN

BACKGROUND: Anaphylaxis is a serious and potentially lethal systemic reaction affecting more than one organ or system. OBJECTIVE: We aimed to describe the demographic characteristics, clinical features, causes, settings, and administered therapy in Turkish children. METHODS: This retrospective, case note study included all children referred to the outpatient clinics of the Pediatric Allergy Departments of the participating study centres from 1 July 1999 to 30 June 2009 for investigation of anaphylaxis or who were seen by us at the moment of the reaction during the same period and who met the clinical criteria of anaphylaxis. RESULTS: Two hundred and twenty-four cases of anaphylaxis were reported in 137 children (88 boys, P = 0.0001). The mean ± SD age at the referral was 7.7 ± 4.2 years (range: 4 months-17 years). Ninety-eight episodes (43.8%) occurred at home. The symptoms were cutaneous in 222 (99.1%) episodes, respiratory in 217 (96.9%), neuro-psychiatric in 118 (52.7%), cardiovascular in 92 (41.1%), and gastrointestinal in 88 (39.3%). Biphasic reaction was reported in seven episodes (3.1%, 95% CI: 1.5-6.3). Death occurred in one case (0.4%, 95% CI: 0.08-2.4). Treatment was available in 158 episodes (70.5%). Of them, 148 (93.7%) received antihistamines, 132 (83.5%) corticosteroids, 51 (32.3%) epinephrine, and 17 (10.8%) beta-2-mimetics. The causative agents were foods in 86 (38.4%) episodes, hymenoptera venom in 84 (37.5%), drugs and medications in 47 (21.0%), and latex in 5 (2.2%). In two episodes (0.9%), the causative agent was unidentified. Allergy to the trigger was known prior to anaphylaxis in 116 (51.8%) episodes. An epinephrine auto-injector had been prescribed for 70 children (51.1%). CONCLUSIONS AND CLINICAL RELEVANCE: Anaphylaxis was seen significantly more in boys. Most of the reactions occurred at home. Foods were the most frequent cause. Epinephrine, the first-line treatment of anaphylaxis, was administered in only a third of the children.


Asunto(s)
Anafilaxia/epidemiología , Adolescente , Anafilaxia/diagnóstico , Anafilaxia/etiología , Anafilaxia/terapia , Niño , Preescolar , Femenino , Humanos , Lactante , Masculino , Recurrencia , Estudios Retrospectivos , Turquía/epidemiología
16.
Allergol. immunopatol ; 39(2): 73-78, mar.-abr. 2011. tab, graf
Artículo en Inglés | IBECS | ID: ibc-90061

RESUMEN

Background: There are many educational events for physicians in different countries covering one or some of the allergic diseases. Most of these educational events have been reported to improve care by the physicians. The aim of this study was to determine the baseline knowledge of general practitioners (GP) regarding the systemic nature of childhood allergy and atopic march, and to assess the influence of an educational event on this baseline knowledge. Methods: Two hundred and two GPs from five different cities in Turkey who attended education seminars were enrolled. All GPs were received the questionnaire both before and after the seminar. The questionnaire had statements about the systemic nature of childhood allergies and the atopic march, and GPs were asked to mark their degree of agreement as (completely true, partially true, wrong). Results: Mean age of GPs was 38.6 ± 6.0 years. Mean duration after graduation from medical faculty was 13.9 ± 6.5 years. There was significant improvement in answers after education.The statement ‘‘Frequency of allergic rhinitis and asthma is not as high as expected in children with atopic dermatitis’’ was regarded ‘‘wrong’’ by 60.9% but increased to 94.3% after the education (p < 0.001). Systemic nature of allergy was approved by 72.8%, which increased to 99% after the education (p < 0.001). Adrenalin as first line treatment in anaphylaxis treatment was appreciated by a higher number of GPs with the education (p < 0.001). Conclusion: Many GPs lack updated information about the systemic nature of paediatric allergic diseases and a single educational event may improve their knowledge significantly (AU)


Asunto(s)
Humanos , Masculino , Femenino , Adulto , Educación/métodos , Atención Primaria de Salud/métodos , Hipersensibilidad Inmediata/epidemiología , Hipersensibilidad Inmediata/prevención & control , Encuestas y Cuestionarios , Conocimiento
17.
Allergol Immunopathol (Madr) ; 39(2): 73-8, 2011.
Artículo en Inglés | MEDLINE | ID: mdl-21208716

RESUMEN

BACKGROUND: There are many educational events for physicians in different countries covering one or some of the allergic diseases. Most of these educational events have been reported to improve care by the physicians. The aim of this study was to determine the baseline knowledge of general practitioners (GP) regarding the systemic nature of childhood allergy and atopic march, and to assess the influence of an educational event on this baseline knowledge. METHODS: Two hundred and two GPs from five different cities in Turkey who attended education seminars were enrolled. All GPs were received the questionnaire both before and after the seminar. The questionnaire had statements about the systemic nature of childhood allergies and the atopic march, and GPs were asked to mark their degree of agreement as (completely true, partially true, wrong). RESULTS: Mean age of GPs was 38.6±6.0 years. Mean duration after graduation from medical faculty was 13.9±6.5 years. There was significant improvement in answers after education. The statement "Frequency of allergic rhinitis and asthma is not as high as expected in children with atopic dermatitis" was regarded "wrong" by 60.9% but increased to 94.3% after the education (p<0.001). Systemic nature of allergy was approved by 72.8%, which increased to 99% after the education (p<0.001). Adrenalin as first line treatment in anaphylaxis treatment was appreciated by a higher number of GPs with the education (p<0.001). CONCLUSION: Many GPs lack updated information about the systemic nature of paediatric allergic diseases and a single educational event may improve their knowledge significantly.


Asunto(s)
Educación Médica Continua , Hipersensibilidad/epidemiología , Médicos de Atención Primaria , Encuestas y Cuestionarios , Adulto , Conocimientos, Actitudes y Práctica en Salud , Humanos , Hipersensibilidad/inmunología , Persona de Mediana Edad , Pediatría/educación , Médicos de Atención Primaria/educación , Competencia Profesional/normas , Turquía
18.
Clin Exp Allergy ; 38(5): 805-11, 2008 May.
Artículo en Inglés | MEDLINE | ID: mdl-18325031

RESUMEN

BACKGROUND: Montelukast is a potent cysteinyl leukotriene-1 receptor antagonist possessing some anti-inflammatory effects although the molecular mechanism of these anti-inflammatory effects is unknown. In this study, we aimed to investigate the effect of montelukast on nuclear factor (NF)-kappaB-associated histone acetylation activity in phorbol myristate acetate (PMA)-differentiated U937 cells. METHODS: We examined the inhibitory effects of montelukast on TNF-alpha-induced IL-8 production in PMA-differentiated U-937 cells. U-937 cells were exposed to PMA (50 ng/mL) for 48 h to allow differentiation to macrophages. Macrophages were then exposed to TNF-alpha (10 ng/mL) in the presence or absence of montelukast (0.01-10 microm) for 24 h. After this time, the concentration of IL-8 in the culture supernatant was measured by sandwich-type ELISA kit. The effect of signalling pathways on TNF-alpha-induced IL-8 release was examined pharmacologically using selective NF-kappaB/IKK2 (AS602868, 3 microm), (PD98059, 10 microm) and p38 mitogen activated protein kinase (MAPK) (SB203580, 1 microm) inhibitors. NF-kappaB DNA binding activity was measured by a DNA-binding ELISA-based assay. NF-kappaB-p65-associated histone acetyltransferase (HAT) activity was measured by immunoprecipitation linked to commercial fluorescent HAT. RESULTS: TNF-alpha-induced IL-8 release was suppressed by an NF-kappaB inhibitor but not by MEK or p38 MAPK inhibitors. Montelukast induced a concentration-dependent inhibition of TNF-alpha-induced IL-8 release and mRNA expression that reached a plateau at 0.1 microm without affecting cell viability. Montelukast did not affect NF-kappaB p65 activation as measured by DNA binding but suppressed NF-kappaB p65-associated HAT activity. CONCLUSION: Montelukast inhibits TNF-alpha-stimulated IL-8 expression through changes in NF-kappaB p65-associated HAT activity. Drugs targeting these enzymes may enhance the anti-inflammatory actions of montelukast.


Asunto(s)
Acetatos/farmacología , Histona Acetiltransferasas/antagonistas & inhibidores , Interleucina-8/efectos de los fármacos , Antagonistas de Leucotrieno/farmacología , Macrófagos/efectos de los fármacos , Quinolinas/farmacología , Factor de Necrosis Tumoral alfa/farmacología , Ciclopropanos , Humanos , Interleucina-8/metabolismo , Macrófagos/inmunología , Macrófagos/metabolismo , FN-kappa B/metabolismo , Transducción de Señal , Sulfuros , Células U937
20.
Eur Respir J ; 29(1): 91-7, 2007 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-17050564

RESUMEN

Respiratory syncytial virus (RSV) bronchiolitis is the most common lower respiratory tract infection in infancy. To date, there is no effective therapy for RSV bronchiolitis. In order to investigate the efficacy of clarithromycin in the treatment of RSV bronchiolitis, the present authors conducted a randomised, double-blind, placebo-controlled trial comparing clarithromycin with placebo in 21 infants with a diagnosis of RSV bronchiolitis. The infants were randomised to receive clarithromycin or placebo daily for 3 weeks. Levels of interleukin (IL)-4, IL-8, eotaxin, and interferon-gamma were determined in plasma, before and after treatment, using ELISA. Six months after treatment, parents were surveyed as to whether their child had experienced wheezing within the previous 6 months. Treatment with clarithromycin was associated with a statistically significant reduction in the length of hospital stay, the duration of need for supplemental oxygen and the need for beta(2)-agonist treatment. There were significant decreases in plasma IL-4, IL-8 and eotaxin levels after 3 weeks of treatment with clarithromycin. Readmission to the hospital within 6 months after discharge was significantly lower in the clarithromycin group. In conclusion, clarithromycin has statistically significant effects on the clinical and laboratory findings in respiratory syncytial virus bronchiolitis. Therefore, clarithromycin treatment may be helpful in reducing the short-term effects of respiratory syncytial virus bronchiolitis.


Asunto(s)
Antibacterianos/uso terapéutico , Bronquiolitis Viral/tratamiento farmacológico , Claritromicina/uso terapéutico , Infecciones por Virus Sincitial Respiratorio/tratamiento farmacológico , Antibacterianos/administración & dosificación , Bronquiolitis Viral/sangre , Bronquiolitis Viral/virología , Quimiocina CCL11 , Quimiocinas CC/sangre , Claritromicina/administración & dosificación , Método Doble Ciego , Esquema de Medicación , Femenino , Humanos , Lactante , Interferón gamma/sangre , Interleucina-4/sangre , Interleucina-8/sangre , Tiempo de Internación , Masculino , Infecciones por Virus Sincitial Respiratorio/sangre , Infecciones por Virus Sincitial Respiratorio/complicaciones
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