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Increased Formation of ThromboxaneIn Vivo in Humans with Mastocytosis
Jason D. Morrow, John A. Oates, L. Jackson Roberts, William E. Zackert, Tanya A. Mitchell Journal of Investigative Dermatology Volume 113, Issue 1, Pages (July 1999) DOI: /j x Copyright © 1999 The Society for Investigative Dermatology, Inc Terms and Conditions
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Figure 1 Urinary levels of 11-dehydro-TxB2 are increased in the majority of 17 patients with mastocytosis. Each patient is denoted by a letter which corresponds to the clinical and histologic data noted in Table 1. Each triangle represents a different 24 h urine collection for a particular patient. The horizontal dashed line represents the upper limit of normal (2 SD above the mean) for the urinary excretion of 11-dehydro-TxB2. Journal of Investigative Dermatology , 93-97DOI: ( /j x) Copyright © 1999 The Society for Investigative Dermatology, Inc Terms and Conditions
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Figure 2 Comparison of the urinary excretion of 11-dehydro-TxB2 to PGD-M in patients with mastocytosis. Each triangle represents a different 24 h urine collection for a particular patient with mastocytosis. The vertical and horizontal dashed lines represent the upper limits of normal for 11-dehydro-TxB2 and PGD-M, respectively. Urinary levels of both compounds were quantitated by GC/NICI MS assays. The correlation coefficient for the relationship, r = 0.98, r2 = 0.95, p < Journal of Investigative Dermatology , 93-97DOI: ( /j x) Copyright © 1999 The Society for Investigative Dermatology, Inc Terms and Conditions
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Figure 3 Comparison of the urinary excretion of 11-dehydro-TxB2 to Nτ-methylhistamine in patients with mastocytosis. Each triangle represents a different 24 h urine collection for a particular patient with mastocytosis. The vertical and horizontal dashed lines represent the upper limits of normal for 11-dehydro-TxB2 and Nτ-methylhistamine, respectively. Urinary levels of both compounds were quantitated by GC/NICI MS assays. The correlation coefficient for the relationship, r = 0.91, r2 = 0.84, p < Journal of Investigative Dermatology , 93-97DOI: ( /j x) Copyright © 1999 The Society for Investigative Dermatology, Inc Terms and Conditions
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Figure 4 Effect of aspirin treatment on recovery of urinary 11-dehydroTxB2 (▵), urinary PGD-M (○), and serum TxB2 (□) in two patients with mastocytosis. Each patient was treated with aspirin 160 mg orally twice a day for 4 d. Therapy was stopped on day 0 and blood and urine collected for the subsequent 8 d. Data for each eicosanoid are expressed percentage pre-aspirin treatment levels. In each patient, pretreatment urinary excretion of both 11-dehydro-TxB2 and PGD-M were markedly increased above the upper limits of normal. Journal of Investigative Dermatology , 93-97DOI: ( /j x) Copyright © 1999 The Society for Investigative Dermatology, Inc Terms and Conditions
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