scholarly journals Studies on the Role of Metabolic Activation in Tyrosine Kinase Inhibitor–Dependent Hepatotoxicity: Induction of CYP3A4 Enhances the Cytotoxicity of Lapatinib in HepaRG Cells

2013 ◽  
Vol 42 (1) ◽  
pp. 162-171 ◽  
Author(s):  
Klarissa D. Hardy ◽  
Michelle D. Wahlin ◽  
Ioannis Papageorgiou ◽  
Jashvant D. Unadkat ◽  
Allan E. Rettie ◽  
...  
2009 ◽  
Vol 108 (2) ◽  
pp. 492-500 ◽  
Author(s):  
Bo Feng ◽  
Jinghai J. Xu ◽  
Yi-An Bi ◽  
Rouchelle Mireles ◽  
Ralph Davidson ◽  
...  

Biomedicines ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 1759
Author(s):  
Liliana Montella ◽  
Margaret Ottaviano ◽  
Vittorio Riccio ◽  
Fernanda Picozzi ◽  
Gaetano Facchini ◽  
...  

Langerhans cell histiocytosis (LCH) is a rare disease that has a variable clinical presentation and unpredictable behavior. Until recently, therapeutic options were limited. Insights into the role of mitogen-activated protein kinase (MAPK) signaling have allowed the increased use of targeted treatments. Before the advent of drugs that interfere with this pathway, investigations concerning the tyrosine kinase inhibitor imatinib opened the way to a rationale-based therapeutic approach to the disease. Imatinib block the binding site of ATP in the BCR/ABL protein and is also a platelet-derived growth factor receptor (PDGFR) and a KIT (CD117) kinase inhibitor. A case of refractory LCH with brain involvement was reported to be successfully treated with imatinib. Thereafter, we further explored the role of this tyrosine kinase inhibitor. The present study is composed of an immunohistochemical evaluation of PDGFRβ expression and a clinical evaluation of imatinib in a series of LCH patients. In the first part, a series of 10 samples obtained from LCH patients was examined and a strong immunohistochemistry expression of PDGFRβ was found in 40% of the cases. In the clinical part of the study, five patients were enrolled. Long-lasting disease control was obtained. These results may suggest a potential role for this drug in the current age.


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