Journal
EUROPEAN RESPIRATORY JOURNAL
Volume 20, Issue 1, Pages 59-65Publisher
EUROPEAN RESPIRATORY SOC JOURNALS LTD
DOI: 10.1183/09031936.02.00258702
Keywords
pulmonary hypertension; serotonin; type-I glycogen-storage disease
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A case of pulmonary arterial hypertension in a patient with type-la glycogen-storage disease, a rare autosomal recessive disorder caused by a deficiency of glucose-6-phosphatase is reported in this study. It has been suggested that the occurrence of pulmonary arterial hypertension in type-la glycogen-storage disease could be due to an abnormal production of vasoconstrictive amines such as serotonin. To test this hypothesis, plasma serotonin concentrations were prospectively measured in 13 patients with type-la glycogen-storage disease, one patient with severe pulmonary hypertension and type-Ia glycogen-storage disease, 16 patients displaying severe pulmonary arterial hypertension, and 26 normal healthy controls. Elevated plasma serotonin concentrations were found in patients with either severe pulmonary arterial hypertension (38.8+/-7.3 nmol(.)L(-1)) or type-la glyco en-storage disease (36.8+/-11.5 nmol(.)L(-1)), as compared with controls (8.8+/-0.6 nmol(.)L(-1), p<0.001). Plasma serotonin seas dramatically elevated in the patient with type-Ia glycogen-storage disease and pulmonary arterial hypertension (113.4 nmol(.)L(-1)). It is concluded that type-la glycogen-storage disease may be another condition in which abnormal handling of serotonin is one event in a multistep process leading to severe pulmonary arterial hypertension.
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