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Determination of Serum Carbohydrate-Deficient Transferrin (CDT) by the Nephelometric N Latex CDT Assay in Japanese Habitual Drinkers and Patients with Non-Alcoholic Liver Diseases | Abstract
ISSN: 2329-6488

Journal of Alcoholism & Drug Dependence
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Research Article

Determination of Serum Carbohydrate-Deficient Transferrin (CDT) by the Nephelometric N Latex CDT Assay in Japanese Habitual Drinkers and Patients with Non-Alcoholic Liver Diseases

Mako Yamada1, Masanori Seimiya1, Mamoru Satoh2, Sakae Itoga1, Kazuyuki Sogawa2,4, Hirotaka Takizawa5, Osamu Yokosuka BD6 and Fumio Nomura1,2,3*

1Division of Laboratory Medicine, Chiba University Hospital, Japan

2Clinical Proteomics Research Center, Chiba University Hospital, Japan

3Department of Molecular Diagnosis, Graduate School of Medicine, Chiba University, Japan

4Department of Food Biochemistry, School of Life and Environmental Science, Azabu University, Japan

5Kashiwado Clinic in Port-Square, Kashiwado Memorial Foundation, Japan

6Department of Medicine and Clinical Oncology, Graduate School of Medicine, Chiba University, Japan

Corresponding Author:
Fumio Nomura
Department of Molecular Diagnosis and Division of Clinical Genetics and Proteomics, Graduate School of Medicine,
Chiba University and Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba City, Japan
Tel: +81-43-226-2324
Fax: +81-43-226-2324
E-mail: [email protected]

Received date: August 21, 2013; Accepted date: October 22, 2013; Published date: October 28, 2013

Citation: Yamada M, Seimiya M, Satoh M, Itoga S, Sogawa K, et al. (2013) Determination of Serum Carbohydrate-Deficient Transferrin (CDT) by the Nephelometric N Latex CDT Assay in Japanese Habitual Drinkers and Patients with Non-Alcoholic Liver Diseases. J Alcoholism Drug Depend 1:138. doi:10.4172/2329-6488.1000138

Copyright: © 2013 Yamada M et al., This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


Background: Excessive alcohol consumption is a health risk that can lead to a variety of medical and social problems. Carbohydrate Deficient Transferrin (CDT) is now widely used for detection of chronic alcohol abuse and monitoring sobriety in alcoholics. We assessed the diagnostic performance of the direct immunoassay for %CDT (N Latex CDT) in Japanese habitual drinkers at their annual medical check-up. We also tested whether this direct assay is influenced by the presence of non-alcoholic liver disease including non-alcoholic steatohepatitis and HCVrelated hepatocellular carcinoma.

Methods: We performed the N Latex CDT assay using a Siemens BN-II nephelometric analyzer to measure CDT concentration. The reference intervals of %CDT and gamma glutamyl transferase (GGT) activities were obtained based on their measurements in 160 apparently healthy nondrinkers. Habitual drinkers were divided into light drinkers (less than 40g ethanol/day) and heavy drinkers (more than 60g ethanol/day) Furthermore, %CDT levels in a total of 184 patients with non-alcoholic chronic liver diseases including Hepatitis C Virus (HCV) related liver cirrhosis, Non-Alcoholic Steatohepatitis (NASH) were determined.

Results: In the heavy drinkers, the positive rates of %CDT and GGT were 58.3% and 41.7%, respectively. The combination assay of %CDT and GGT resulted in 75% sensitivity and 95% specificity. It was notable that 57% of GGT non-responders were detected by CDT measurements. The mean serum level of %CDT was not influenced by the presence of NASH, but was increased in patients with moderate-severe HCV-related liver cirrhosis. The %CDT levels were also high in patients with hepatocellular carcinoma with liver cirrhosis, but were not related to their tumor stages.

Conclusions: The %CDT determined by automated N Latex CDT may be useful biomarker complementary to GGT to detect excessive habitual drinkers in Japan. However, caution should be taken to interpret the results in advanced non-alcoholic liver cirrhosis.


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