Simultaneous measurement of 3-chlorotyrosine and 3,5-dichlorotyrosine in whole blood, serum, and plasma by isotope dilution HPLC-MS/MS

Crow, Brian S.; Quiñones-González, Jennifer; Pantazides, Brooke G.; Perez, Jonas W.; Winkeljohn, W. Rucks; Garton, Joshua W.; Thomas, Jerry D.; Blake, Thomas A.; Johnson, Rudolph C.

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Simultaneous measurement of 3-chlorotyrosine and 3,5-dichlorotyrosine in whole blood, serum, and plasma by isotope dilution HPLC-MS/MS

Published Date:

Mar 13 2016

Source:

J Anal Toxicol. 40(4):264-271.

[PDF-593.56 KB]

Details:

Alternative Title:

J Anal Toxicol

Personal Author:

Crow, Brian S. ; Quiñones-González, Jennifer ; Pantazides, Brooke G. ; Perez, Jonas W. ; Winkeljohn, W. Rucks ; ... More ▼

Description:

Chlorine is a public health concern and potential threat due to its high reactivity, ease and scale of production, widespread industrial use, bulk transportation, massive stockpiles and history as a chemical weapon. This work describes a new, sensitive and rapid stable isotope dilution method for the retrospective detection and quantitation of two chlorine adducts. The biomarkers 3-chlorotyrosine (Cl-Tyr) and 3,5-dichlorotyrosine (Cl2-Tyr) were isolated from the pronase digest of chlorine exposed whole blood, serum or plasma by solid-phase extraction (SPE), separated by reversed-phase HPLC and detected by tandem mass spectrometry (MS-MS). The calibration range is 2.50-1,000 ng/mL (R2 ≥ 0.998) with a lowest reportable limit (LRL) of 2.50 ng/mL for both analytes, an accuracy of ≥93% and an LOD of 0.443 ng/mL for Cl-Tyr and 0.396 ng/mL for Cl2-Tyr. Inter- and intra-day precision of quality control samples had coefficients of variation of ≤10% and ≤7.0%, respectively. Blood and serum samples from 200 healthy individuals and 175 individuals with chronic inflammatory disease were analyzed using this method to assess background levels of chlorinated tyrosine adducts. Results from patients with no known inflammatory disease history (healthy) showed baseline levels of

Subject:

[+]

Pubmed ID:

26977104

Pubmed Central ID:

PMC5693347

Document Type:

Journal Article

Funding:

CC999999/Intramural CDC HHS/United States

Collection(s):

CDC Public Access

Main Document Checksum:

[+]

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