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Borlak et al. Genome Medicine 2013, 5:86 Serum acute phase reactants hallmark healthyindividuals at risk for acetaminophen-inducedliver injury Jürgen Borlak1*, Bijon Chatterji1, Kishor B Londhe1 and Paul B Watkins2 Background: Acetaminophen (APAP) is a commonly used analgesic. However, its use is associated with drug-inducedliver injury (DILI). It is a prominent cause of acute liver failure, with APAP hepatotoxicity far exceeding other causes ofacute liver failure in the United States. In order to improve its safe use this study aimed to identify individuals at riskfor DILI prior to drug treatment by searching for non-genetic serum markers in healthy subjects susceptible toAPAP-induced liver injury (AILI).
Methods: Healthy volunteers (n = 36) received either placebo or acetaminophen at the maximum daily dose of 4 gfor 7 days. Blood samples were taken prior to and after APAP treatment. Serum proteomic profiling was done by2D SDS-PAGE and matrix-assisted laser desorption/ionization-time of flight-mass spectrometry. Additionally, theproteins C-reactive protein, haptoglobin and hemopexin were studied by quantitative immunoassays.
Results: One-third of study subjects presented more than four-fold increased alanine transaminase activity toevidence liver injury, while serum proteomics informed on 20 proteins as significantly regulated. These functionprimarily in acute phase and immune response. Pre-treatment associations included C-reactive protein,haptoglobin isoforms and retinol binding protein being up to six-fold higher in AILI susceptible individuals,whereas alpha1-antitrypsin, serum amyloid A, kininogen and transtyretin were regulated by nearly five-fold in AILIresponders. When compared with published findings for steatohepatitis and cases of hepatocellular, cholestaticand mixed DILI, 10 proteins were identified as uniquely associated with risk for AILI, including plasminogen.
Notably, this zymogen facilitates macrophage chemotactic migration and inflammatory response as reported forplasminogen-deficient mice shown to be resistant to APAP hepatotoxicity. Finally, analysis of a publicly availabledatabase of gene expression profiles of cultures of human hepatocytes treated with drugs labeled as no- (n = 8),low- (n = 45) or most-DILI-concern (n = 39) confirmed regulation of the identified biomarkers to demonstrate utilityin predicting risk for liver injury.
Conclusions: The significant regulation of acute phase reactants points to an important link between AILI and theimmune system. Monitoring of serum acute phase reactants prior to drug treatment may contribute to preventionand management of AILI, and may also be of utility for other drugs with known liver liabilities.
* Correspondence: 1Centre for Pharmacology and Toxicology, Hannover Medical School,Carl-Neuberg-Straße 1, 30625, Hannover, GermanyFull list of author information is available at the end of the article 2013 Borlak et al.; licensee BioMed Central Ltd. This is an open access article distributed under the terms of the CreativeCommons Attribution License which permits unrestricted use, distribution, andreproduction in any medium, provided the original work is properly cited.


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Clinical Outcome Measures in Spinal Muscular Atrophy Jacqueline Montes, Andrew M. Gordon, Shree Pandya, Darryl C. De Vivo and Petra Kaufmann 2009; 24; 968 originally published online Jun 9, 2009; The online version of this article can be found at: can be found at: Journal of Child Neurology Additional services and information f

Title: The pharmacokinetics of Lopinavir/Ritonavir in combination with Atazanavir in HIV-infected Subjects PI: R. Chris Rathbun, Pharm.D. Agency: Abott Labs Funding Period: 04/01/2007 through 10/02/2008 Abstract Since its introduction in 2000, lopinavir/ritonavir has become the preferred protease inhibitor for patients initiating antiretroviral therapy due to its high rate of success, tolerability

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