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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

Cyclic AMP metabolism in fragile X syndrome.

Cyclic AMP (cAMP) metabolism was studied in platelets from a series of 14 patients with fragile X syndrome (fra X) and 21 control individuals. 1-Isobutyl-3-methylxanthine was used to inhibit phosphodiesterase and thus measure cAMP production, prostaglandin E1 was used to assess receptor-mediated cAMP accumulation, and forskolin was used to directly stimulate the catalytic subunit. In patients with fra X, basal production was 63% of that of control subjects (p = 0.019). Prostaglandin E1- and forskolin-stimulated production were 61% (p = 0.039) and 56% (p = 0.012) of that of control subjects, respectively. cAMP production in 8 patients with fra X overlapped the control range, whereas measures of production in 6 patients formed a cluster with values lower than any of the 21 control subjects assayed, suggesting possible biochemical heterogeneity within patients with fra X. Results obtained from the group of patients with fra X suggest possible abnormal function or regulation of the catalytic subunit of adenylate cyclase in at least a subgroup of patients with fra X. Variability of biochemical findings in patients with fra X may reflect the known high variability of the clinical syndrome.[1]

References

  1. Cyclic AMP metabolism in fragile X syndrome. Berry-Kravis, E., Huttenlocher, P.R. Ann. Neurol. (1992) [Pubmed]
 
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