Evaluation of Internal Exposure to Plutonium from the Late Urinary Excretion Data

24-HOUR URINARY CALCIUM EVALUATION IN A HEALTHY POPULATION SAMPLE AND IN PATIENTS WITH UROLITHIASIS

A study was designed to evaluate the normal value of 24 hr urinary calcium levels in the city of Yazd. The average urinary excretion of calcium in a sample of 329 persons randomly selected was 232 mg/day, while patients with a history of recurrent urolithiasis excreted 20X mg/day. There is evidence which shows that more important factors than the amount of urinary calcium exist which influe...

Plutonium fecal and urinary excretion functions: derivation from a systemic whole-body retention function.

Liver-bile secretion directly influences the content of plutonium in feces. To assess the reliability of plutonium metabolic models and to improve the accuracy of interpreting plutonium fecal data, we developed a compartmental model that simulates the metabolism of plutonium in humans. With this model, we can describe the transport of plutonium contaminants in the systemic organs and tissues of...

DEVELOPMENT OF A PHYSIOLOGICALLY BASED TOXICOKINETIC MODEL FOR HUMAN EXPOSURE RISK ASSESSMENT OF METHYLENE DIPHENYL DIISOCYANATE(MDI)

Introduction: Given the lack of a developed physiologically based toxicokinetic (PBTK) model for human systemic exposure assessment of methylene diisocyanate (MDI) and prediction of its urinary metabolites, this study aims to develop a PBTK model for exposure risk assessment of MDI. Methods and Materials: In this study, to assess the potential exposure to the MDI, a PBTK model was constructed ...

A Statistical Basis for Interpreting Urinary Excretion of Plutonium Based on Accelerator Mass Spectrometry (AMS) Data from the Marshall Islands

A Survey on Relationship between Diet and Urinary Excretion of Aflatoxin M1: A Screening Pilot Study on Iranian Population

Background: Aflatoxins are found in the most types of foods such as corn, peanuts, pistachio, rice, milk, and etc. These toxins may cause several adverse health effects, notably cancer. The main aim of this study was to evaluate excretion level of aflatoxin M1 (AFM1), as a biomarker of aflatoxin B1 exposure, in urine samples of Iranian population. Also, relationship between diet and urinary exc...