Summary
An increase in total urinary neopterin was observed in 12 of 13 patients with acquired immunodeficiency syndrome (AIDS), seven of 13 patients with lymphadenopathy, one of six healthy homosexual males, seven of ten adult patients with staphylococcal pneumonia, 11 of 12 children with viral infections, four of seven children with bacterial infections, and 12 of 13 children with various immune defects. Extremely high values of total urinary neopterin and monapterin were observed in severely ill patients with AIDS and those with familial hemophagocytic lymphohistiocytosis. Neopterin excretion was normal in two AIDS patients with Kaposi's sarcoma, but without opportunistic infections at that time. On reexamination of one of these patients later on, elevated neopterin values were noted. Parallel increases in neopterin and monapterin were found, whereas biopterin was usually normal. The increase in total neopterin was mainly due to 7,8-dihydroneopterin and was accompanied by an increase in 3′-hydroxysepiapterin. Increased neopterin in urine is assumed to reflect the increase in GTP pool and GTP cyclohydrolase I activity as observed in stimulated monocytes. Thus, neopterin, as a measure of the activation of the nonspecific cellular immune system, may be used diagnostically to detect allograft rejection after transplantations and to follow-up HTLV-III positive patients.
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Abbreviations
- AIDS:
-
acquired immunodeficiency syndrome
- ARC:
-
AIDS related complex
- BH4 :
-
tetrahydrobiopterin
- GTP:
-
guanosine triphosphate
References
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Supported by the Swiss National Science Foundation, project 3.266-0.82 and 3.601-0.84
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Niederwieser, A., Joller, P., Seger, R. et al. Neopterin in AIDS, other immunodeficiencies, and bacterial and viral infections. Klin Wochenschr 64, 333–337 (1986). https://doi.org/10.1007/BF01711954
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DOI: https://doi.org/10.1007/BF01711954