RESUMEN
Allergic reactions to lupin have increased in parallel with the growing use of lupin flour by food manufacturers. We studied a patient with recurrent anaphylaxis to manufactured foods and a history of rhinitis-asthma related to lupin inhalation and legume tolerance. Skin prick tests with airborne and food allergens, specific immunoglobulin (Ig) E determinations, and an inhalation exposure test to ground lupin were carried out. Lupin allergens and cross-reactivity with other legumes were also studied using sodium dodecyl sulfate polyacrylamide gel electrophoresis and immunoblotting/immunoblotting inhibition. The skin tests and specific IgE were positive for lupin and vetchling and negative for other legumes. The presence of lupin flour in the implicated foods was confirmed. Immunoblotting showed multiple IgE-binding bands (10-40 kDa) for lupin and vetchling but not for peanut, pea, or soy extracts. Immunoblotting inhibition demonstrated intense lupin-vetchling cross-reactivity. We present a case of recurrent anaphylaxis due to lupin flour as a hidden food allergen with primary sensitization due to exposure to ground lupin via inhalation. We found cross-reactivity between lupin and vetchling but not other legumes.
Asunto(s)
Anafilaxia/etiología , Hipersensibilidad a los Alimentos/etiología , Lupinus/inmunología , Femenino , Harina/efectos adversos , Volumen Espiratorio Forzado , Humanos , Inmunoglobulina E/sangre , Exposición por Inhalación , Lupinus/efectos adversos , Persona de Mediana Edad , RecurrenciaRESUMEN
OBJECTIVE: Preterm neonates undergoing intensive care have high morbidity from sepsis. These infants also frequently develop neutropenia, and when this is associated with sepsis, mortality is high. This study investigates the potential for granulocyte-macrophage colony-stimulating factor (GM-CSF) to effect a clinically relevant increase in neutrophil number when used prophylactically in high-risk preterm neonates, and assesses its safety in this population. DESIGN: In an open, randomized, controlled study, 75 neonates (25 small for gestational age) <32 weeks gestation were randomized to receive GM-CSF (10 microg/kg/d) by subcutaneous injection for 5 days from <72 hours after birth, or to a control group. The primary outcome measure was the neutrophil count during 14 days from study entry. The infants were monitored for potential toxicity. Clinical outcomes, sepsis, and mortality, were recorded, but this initial study was not designed to address clinical benefit. RESULTS: Prophylactic GM-CSF therapy completely abolished neutropenia in treated infants, when both well and septic, throughout the period of study. Neutropenia (=1.7 x 10(9)/L) developed in 16 of 39 control infants. Five control infants experienced an acute decrease in neutrophil count coincident with the onset of sepsis. There was no evidence of hematologic, respiratory, or gastrointestinal toxicity in treated infants. Treated infants had a trend to fewer symptomatic, blood culture positive septic episodes than controls during 2 weeks from study entry (11/36 vs 18/39). CONCLUSION: Five-day prophylactic GM-CSF completely abolishes postnatal neutropenia and sepsis-induced neutropenia in preterm neonates at high risk of sepsis, and so removes an important risk factor for sepsis and sepsis-related mortality.GM-CSF, preterm neonates, neutropenia, sepsis.
Asunto(s)
Factor Estimulante de Colonias de Granulocitos y Macrófagos/uso terapéutico , Recien Nacido Prematuro/inmunología , Neutropenia/prevención & control , Neutrófilos/efectos de los fármacos , Recuento de Células Sanguíneas , Femenino , Factor Estimulante de Colonias de Granulocitos y Macrófagos/efectos adversos , Factor Estimulante de Colonias de Granulocitos y Macrófagos/inmunología , Humanos , Recién Nacido , Recien Nacido Prematuro/sangre , Recién Nacido Pequeño para la Edad Gestacional/sangre , Recién Nacido Pequeño para la Edad Gestacional/inmunología , Recuento de Leucocitos/efectos de los fármacos , Masculino , Oportunidad Relativa , Sepsis/mortalidad , Sepsis/prevención & controlRESUMEN
What happens when the wheel of academic theory meets the road of business practice reality? Author David Lindo, Ph.D., describes how one group successfully combined the two in its mission to be the premier radiology group in an expanding service area.