Yearly Archives: 2013

/2013

The Role of the Toxicologic Pathologist in the Post-Genomic Era

An era can be defined as a period in time identified by distinctive character, events, or practices. We are now in the genomic era. The pre-genomic era: There was a pre-genomic era. It started many years ago with novel and seminal animal experiments, primarily directed at studying cancer. It is marked by the development of [...]

In Vivo Noninvasive Detection of Brown Adipose Tissue through Intermolecular Zero-Quantum MRI

Rosa T. Branca , Le Zhang, Warren S. Warren, Edward Auerbach, Arjun Khanna, Simone Degan, Kamil Ugurbil, Robert Maronpot The recent discovery of active Brown Adipose Tissue (BAT) in adult humans has opened new avenues for obesity research and treatment, as reduced BAT activity seem to be implicated in human energy imbalance, diabetes, and hypertension. [...]

Carcinogenesis: Mechanisms and Manifestations

We foresee cancer research as an increasingly logical science, in which complexities are manifestations of a small set of underlying organizing principles. (Hanahan and Weinberg, 2011) 1. INTRODUCTION 1.1. Overview Cancer is a major cause of debilitation and death in humans and animals. Cancer develops as a function of age, environment, diet, and genetic makeup, [...]

Proceedings of the 2013 Joint JSTP/NTP Satellite Symposium

The first joint Japanese Society of Toxicologic Pathology (JSTP) and National Toxicology Program (NTP) Satellite Symposium, entitled “Pathology Potpourri,” was held on January 29th at Okura Frontier Hotel in Tsukuba, Ibaraki, Japan, in advance of the JSTP’s 29th Annual Meeting. The goal of this Symposium was to present current diagnostic pathology or nomenclature issues to [...]

Immunohistochemistry on decalcified rat nasal cavity: trials and successes

Immunohistochemical (IHC) staining for Casein Kinase 2 alpha (CK2a), cyclin-dependent kinase inhibitor 1B (p27Kip1), and heat shock protein 90 (HSP90) was performed on four levels of decalcified rat nasal cavity from four male and three female controls following nose-only exposure to ambient air for 5 days. Successful staining with negligible background artifact was obtained on [...]

Evaluation Of 90-day Oral Rat Toxicity Studies On The Food Additive, Gum Ghatti

Gum ghatti, a polysaccharide of natural origin, is used in foods as a thickening, gelling, emulsifying and stabilizing agent. In a 90-day toxicity study following Organization for Economic Co-operation and Development (OECD) Guideline #408, male and female Sprague–Dawley rats were exposed to 0 (control), 0.5, 1.5 and 5% gum ghatti in AIN-93M basal diet. Expected [...]