Intraarticular and intravenous administration of 99MTc-HMPAO-labeled human mesenchymal stem cells (99MTC-AH-MSCS): In vivo imaging and biodistribution.

Abstract:

INTRODUCTION:Therapeutic application of intravenous administered (IV) human bone marrow-derived mesenchymal stem cells (ahMSCs) appears to have as main drawback the massive retention of cells in the lung parenchyma, questioning the suitability of this via of administration. Intraarticular administration (IAR) could be considered as an alternative route for therapy in degenerative and traumatic joint lesions. Our work is outlined as a comparative study of biodistribution of 99mTc-ahMSCs after IV and IAR administration, via scintigraphic study in an animal model. METHODS:Isolated primary culture of adult human mesenchymal stem cells was labeled with 99mTc-HMPAO for scintigraphic study of in vivo distribution after intravenous and intra-articular (knee) administration in rabbits. RESULTS:IV administration of radiolabeled ahMSCs showed the bulk of radioactivity in the lung parenchyma while IAR images showed activity mainly in the injected cavity and complete absence of uptake in pulmonary bed. CONCLUSIONS:Our study shows that IAR administration overcomes the limitations of IV injection, in particular, those related to cells destruction in the lung parenchyma. After IAR administration, cells remain within the joint cavity, as expected given its size and adhesion properties. ADVANCES IN KNOWLEDGE:Intra-articular administration of adult human mesenchymal stem cells could be a suitable route for therapeutic effect in joint lesions. IMPLICATIONS FOR PATIENT CARE:Local administration of adult human mesenchymal stem cells could improve their therapeutic effects, minimizing side effects in patients.

journal_name

Nucl Med Biol

authors

Meseguer-Olmo L,Montellano AJ,Martínez T,Martínez CM,Revilla-Nuin B,Roldán M,Mora CF,López-Lucas MD,Fuente T

doi

10.1016/j.nucmedbio.2016.12.003

subject

Has Abstract

pub_date

2017-03-01 00:00:00

pages

36-42

eissn

0969-8051

issn

1872-9614

pii

S0969-8051(16)30382-1

journal_volume

46

pub_type

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