Archives of Clinical Toxicology

Liver masses account for 5 to 6% of pediatric cancer, which includes hepatoblastoma (HBL) along with rare cases of hepatocellular carcinoma (HCC). The most dangerous form of pediatric liver cancer is aggressive HBL, which can be characterized by chemo-resistance and multiple nodules or metastases at diagnosis, all correlating with worse clinical prognosis. Despite intensive studies and a significant improvement in overall outcomes, very little is known about the key molecular pathways which determine the aggressiveness of pediatric liver cancer.

Radiation therapy (RT) is one of the pillars of locally advanced head and neck cancer (HNSCC) treatment in combination with cisplatin or epidermal growth factor receptor inhibitors. Despite a very high local tumor control rate, approximately 50% of patients with locally advanced disease will develop a recurrence.

Brain metastases are a feared complication of breast cancer, occurring in 15-25% of patients and being associated with poor prognosis and reduced quality of life. Magnetic resonance imaging (MRI) is an advanced technique that uses powerful magnetic fields and radio waves to produce detailed three-dimensional (3D) images of the brain's neuroanatomy and any potential pathology, especially in the management of brain metastases. The review article by Mohammadi et al. provides a timely and comprehensive overview of the utility of MRI for detecting and characterizing brain metastases from breast cancer. 

A-to-I RNA modifications performed by the adenosine deaminase acting on RNA (ADAR) protein family are gaining traction as important mechanisms in cancer biology. A-to-I RNA editing changes adenosine to inosine on double stranded RNA, which co-transcriptionally alters transcript sequence and structure. A number of microRNA (miRNA) precursors are known to be edited by the ADARs, which alters the expression and/or function of the mature miRNA. 

Homocysteine (Hcy) metabolism is at the intersection of two metabolic pathways: remethylation and trans-sulfuration, which abnormality can result in hyperhomocysteinemia (HHcy). In the past few years our team has been working on the molecular mechanism of HHcy development.