Tracking the kinetics of intrahepatic immune responses by repeated fine needle aspiration of the liver

Pembroke, Tom, Gallimore, Awen Myfanwy ORCID: https://orcid.org/0000-0001-6675-7004 and Godkin, Andrew James ORCID: https://orcid.org/0000-0002-1910-7567 2015. Tracking the kinetics of intrahepatic immune responses by repeated fine needle aspiration of the liver. Journal of Immunological Methods 424 , pp. 131-135. 10.1016/j.jim.2015.04.011

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Abstract

Liver disease is an increasing global health burden. The final sequalae of cirrhosis, liver failure and hepatocellular carcinoma are often the result of inflammation driven by intrahepatic lymphocytes. Accurate assessment of organ-specific diseases ideally employs tissue sampling though this is rarely performed. Here we report our experiences of utilising repeated fine needle aspirations (FNAs) to assess liver-derived leukocytes. In 88 patient samples, we obtained a mean of 36,959 lymphocytes from each FNA-derived biopsy (SD 22,319 cells, range 5034–91,242 cells) measured by flow cytometry. This quick technique required minimal analgesia compared to liver biopsy (p = 0.03); was well tolerated and safe, and hence repeated sampling up to 3 times within a week was feasible. We detail the technique to rapidly derive a single cell suspension suitable for multiparameter flow cytometry analysis. Finally we illustrate the importance of organ-derived sampling by showing that natural killer (NK) cells from FNA samples have a markedly altered phenotype compared to those assessed in peripheral blood. In combination these data validate FNA as a powerful and well-tolerated method of sampling intrahepatic lymphocytes to study the immunology of acute and chronic liver diseases.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Medicine Systems Immunity Research Institute (SIURI)
Subjects:	R Medicine > R Medicine (General)
Publisher:	Elsevier
ISSN:	0022-1759
Funders:	Wellcome
Date of First Compliant Deposit:	30 March 2016
Date of Acceptance:	15 April 2015
Last Modified:	03 May 2023 23:14
URI:	https://orca.cardiff.ac.uk/id/eprint/75919

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