Valor de la citrulina plasmática como biomarcador de función intestinal en el síndrome de intestino corto y en el trasplante intestinal / Plasma citrulline concentration as a biomarker of intestinal function in short bowel syndrome and in intestinal transplant

Introducción: La citrulina es un aminoácido producido exclusivamente por los enterocitos. Se estudió su valor como biomarcador de masa enterocitaria funcionante en pacientes con fracaso intestinal por síndrome de intestino corto (SIC) y su relación con la tolerancia digestiva. Material y métodos: Se determinó la concentración plasmática de citrulina por cromatografía líquida de alta resolución (normal > 15 μmol/L) en 57 pacientes (edad 0, 5-18 años) con fracaso intestinal en distintas situaciones evolutivas. Fueron excluidos pacientes deshidratados, con insuficiencia renal u otras situaciones que pudieran alterar los resultados. Se clasificaron en grupos: I : SIC extremo dependientes de nutrición parenteral (NP); II : SIC en alimentación mixta enteral-parenteral; III : SIC adaptados y autónomos sin NP; IV : trasplantados y autónomos sin NP. Resultados: Los valores medios ± DE de citrulina plasmática fueron: grupo I (n = 15): 7,1 ± 4,1; grupo II (n = 11): 15,8 ± 8,9; grupo III (n = 13): 20,6 ± 7,5; grupo IV (n = 25): 28,8 ± 10,1. Los valores resultaron inferiores en el grupo I comparados con los grupos II - III - IV (p < 0,001) y en el grupo II comparados con los grupos III - IV (p < 0,001). Se observó una fuerte correlación entre la citrulinemia y la longitud del intestino delgado remanente (r = 0,85; p < 0,001). En el grupo IV la citrulina descendió > 50% coincidiendo con rechazo moderado-severo en 3 pacientes y con enteritis viral en un paciente. Conclusiones: 1. La citrulina plasmática puede ser un biomarcador sensible y específico del intestino funcional residual. 2. Se relaciona con la tolerancia a la alimentación enteral. 3. Debe confirmarse su valor pronóstico en el proceso de adaptación intestinal y como marcador de rechazo en pacientes trasplantados (AU)

Introduction: Citrulline is a non-essential amino acid produced solely in the enterocyte. The aim of this study was to analyse the role of serum citrulline as a biomarker of enterocyte load in children with intestinal failure due to short bowel syndrome (SBS) and its relationship to enteral adaptation. Material and methods: Plasma citrulline concentration was determined by chromatography (normal value > 15 mol/L) in 57 patients (age 0.5-18 years) admitted to our Intestinal Rehabilitation Unit with intestinal failure. Those who were dehydrated, with renal insufficiency, or other conditions able to modify the results were excluded. Patients were divided into 4 groups: group I: SBS totally dependent on parenteral nutrition (PN); group II: SBS under mixed enteral parenteral nutrition; group III: IF weaned from PN after a rehabilitation period; group IV: small bowel transplanted patients weaned from PN and taking a normal diet. Results: The mean ± SD plasma citrulline values were: group I (n = 15): 7.1±4.1; group II (n = 11): 15.8±8.9; group III (n = 13): 20.6±7.5; group IV (n = 25): 28.8±10.1. Values were significantly lower in group I in comparison with groups II-III-IV (P <0 .001), and in group II in comparison with groups III-IV (P < 0.001). A low citrulline was associated with remnant small bowel length (P < 0.001, r = 0.85). In group IV citrulline levels decreased > 50% in 3 patients who developed moderates ever e rejection, and in one patient who developed viral enteritis. Conclusions: 1. Plasma citrulline could be a sensitive and specific biomarker of the residual functional enterocyte load. 2. It is related to enteral feeding tolerance. 3. Its prognostic value in the process of intestinal adaptation and as a rejection marker in small bowel transplanted patients needs to be confirmed (AU)

[Plasma citrulline concentration as a biomarker of intestinal function in short bowel syndrome and in intestinal transplant]. / Valor de la citrulina plasmática como biomarcador de función intestinal en el síndrome de intestino corto y en el trasplante intestinal.

INTRODUCTION: Citrulline is a non-essential amino acid produced solely in the enterocyte. The aim of this study was to analyse the role of serum citrulline as a biomarker of enterocyte load in children with intestinal failure due to short bowel syndrome (SBS) and its relationship to enteral adaptation. MATERIAL AND METHODS: Plasma citrulline concentration was determined by chromatography (normal value>15 µmol/L) in 57 patients (age 0.5-18 years) admitted to our Intestinal Rehabilitation Unit with intestinal failure. Those who were dehydrated, with renal insufficiency, or other conditions able to modify the results were excluded. Patients were divided into 4 groups: group i: SBS totally dependent on parenteral nutrition (PN); group ii: SBS under mixed enteral-parenteral nutrition; group iii: IF weaned from PN after a rehabilitation period; group iv: small bowel transplanted patients weaned from PN and taking a normal diet. RESULTS: The mean ± SD plasma citrulline values were: group i (n=15): 7.1 ± 4.1; group ii (n=11): 15.8 ± 8.9; group iii (n=13): 20.6 ± 7.5; group iv (n=25): 28.8 ± 10.1. Values were significantly lower in group i in comparison with groups ii-iii-iv (P<.001), and in group ii in comparison with groups iii-iv (P<.001). A low citrulline was associated with remnant small bowel length (P<.001, r=0.85). In group iv citrulline levels decreased >50% in 3 patients who developed moderate-severe rejection, and in one patient who developed viral enteritis. CONCLUSIONS: 1. Plasma citrulline could be a sensitive and specific biomarker of the residual functional enterocyte load. 2. It is related to enteral feeding tolerance. 3. Its prognostic value in the process of intestinal adaptation and as a rejection marker in small bowel transplanted patients needs to be confirmed.

Migraña oftalmopléjica. Valor de la resonancia magnética / Ophthalmoplegic migraine: Value of magnetic resonance

La migraña oftalmopléjica es una rara entidad que suele iniciarse en la infancia y que se caracteriza por episodios recurrentes de cefalea migrañosa asociados a parálisis de pares craneales oculomotores, afectando con más frecuencia al tercer par. Su fisiopatología no es conocida, pero la teoría más reciente, que la considera un tipo de neuropatía, ha supuesto que en la última Clasificación Internacional de Cefaleas se incluya dentro del grupo de las neuralgias. El diagnóstico se basa en datos clínicos y en la exclusión de otras entidades. El hallazgo característico de engrosamiento y de realce con contraste del segmento cisternal del nervio oculomotor que se observa en la resonancia magnética (RM) apoya el diagnóstico. Se describe un caso compatible clínicamente, que presentó esta típica imagen en la RM y que tuvo una evolución favorable tras el tratamiento con corticoides (AU)

Ophthalmoplegic migraine is a rare entity, usually starting in chilhood, and characterized by recurrent episodes of migrainous headaches associated with an oculomotor cranial nerve palsy, most commonly affecting the third nerve. Its physiopathology remains unknown, but the most recent theory, that considers it as a neuropathy, has led to its inclusion in the last International Headache Classification into the group of neuralgias. Diagnosis is reliant on clinical grounds and the exclusion of other disorders. The characteristic finding of enlargement and enhancement with contrast of the cisternal portion of the oculomotor nerve, observed in Magnetic Resonance Imaging (MRI) has supported its diagnosis. We describe a clinically compatible case, supported by typical MRI images that progressed favourably following corticoids treatment (AU)

[Ophthalmoplegic migraine: value of magnetic resonance]. / Migraña oftalmopléjica. Valor de la resonancia magnética.

Ophthalmoplegic migraine is a rare entity, usually starting in childhood, and characterized by recurrent episodes of migrainous headaches associated with an oculomotor cranial nerve palsy, most commonly affecting the third nerve. Its physiopathology remains unknown, but the most recent theory, that considers it as a neuropathy, has led to its inclusion in the last International Headache Classification into the group of neuralgias. Diagnosis is reliant on clinical grounds and the exclusion of other disorders. The characteristic finding of enlargement and enhancement with contrast of the cisternal portion of the oculomotor nerve, observed in Magnetic Resonance Imaging (MRI) has supported its diagnosis. We describe a clinically compatible case, supported by typical MRI images that progressed favourably following corticoids treatment.