About My Health Careers Internship MedBlogs Contact us
Medindia LOGIN REGISTER
Advertisement

Soil Contaminated With Arsenic Being Tested on Simulated Gut System

by Rajashri on October 9, 2008 at 3:41 PM
Font : A-A+

 Soil Contaminated With Arsenic Being Tested on Simulated Gut System

A new test has been launched by scientists to determine the effect of soil contaminated with arsenic on human gastrointestinal system. This method may save time and money for people hoping to purchase land with an industrial past.

Chronic exposure to arsenic can cause cancer, impaired nerve function, kidney and liver damage, and skin lesions.

Advertisement

Most testing for potential arsenic exposure is conducted in recognition of the fact that humans unknowingly eat a little bit of soil each day. For children who might play on contaminated soil and ingest dirt, the testing is considered particularly important.

An in-vitro method that simulates digestion of arsenic-laden dirt in a glass flask has been shown in comparison studies at Ohio State University to be as effective as arsenic testing in young pigs, the most common animal model used for this purpose.
Advertisement

This phase of testing is meant to determine how much of the ingested soil arsenic dissolves during digestion and eventually enters the bloodstream.

Some soils can bind up arsenic, preventing the compound from dissolving, which reduces the exposure risk.

"We can't tell you how much arsenic gets absorbed into the blood with the in-vitro method, but we can tell you how much dissolves from the soil in the gastrointestinal tract. Arsenic can't get into the blood unless it dissolves," said Nicholas Basta, professor of soil and environmental chemistry and lead developer of the testing method.

"And right now, we tell people that under worst-case assumptions, any arsenic that gets dissolved also gets absorbed," he added.

Basta and colleagues combine enzymes and other chemicals in a simple glass flask to simulate stomach contents.

After introducing arsenic-contaminated soil to the solution, the scientists stir the contents to mimic a churning stomach and adjust the pH level to maintain proper acidity.

The researchers later simulate the introduction of the solution to the small intestine, where absorption would occur in the body.

The method can't mimic the animal absorption of arsenic into the blood, so the scientists instead determine how much arsenic has dissolved during the process.

The more that dissolves, the more likely the contaminated soil is dangerous to humans and requires treatment or remediation.

Basta and colleagues are continuing to refine the method, but have already put it to use testing between 20 and 50 soil samples each year.

Source: ANI
RAS/L
Advertisement

Advertisement
News A-Z
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Advertisement
News Category
What's New on Medindia
Western Diet may Augment the Risk of Autoimmune Diseases
Black Tea Protects against Blood Pressure and Heart Diseases
Green Mediterranean Diet may Help Repair Age-Related Brain Damages
View all

Medindia Newsletters Subscribe to our Free Newsletters!
Terms & Conditions and Privacy Policy.

More News on:
Probiotics - Support System for the Gut Arsenic Poisoning Leaky Gut Syndrome 

Recommended Reading
Ammonia Emissions by Seabirds Contributing to Atmospheric Acidity
A new study has shown ammonia emissions from seabirds to be a significant source of nitrogen in ......
Research Throws Light on Adaptation of E.coli to Changing Conditions
Leading experimental research in evolution and artificial selection, providing insight into how ......
Glue Developed That can Switch on and Off
British scientists have created a special type of glue that can be switched on and off. The ......
Arsenic Poisoning
Arsenic poisoning also known as arsenicosis occurs when a person’s body contains greater than normal...
Leaky Gut Syndrome
Leaky gut syndrome is a condition caused by increased intestinal permeability of the gut. It resembl...
Probiotics - Support System for the Gut
Probiotics are live microorganisms that resemble the “good bacteria” in our gut. Science is yet to f...

Disclaimer - All information and content on this site are for information and educational purposes only. The information should not be used for either diagnosis or treatment or both for any health related problem or disease. Always seek the advice of a qualified physician for medical diagnosis and treatment. Full Disclaimer

© All Rights Reserved 1997 - 2022

This site uses cookies to deliver our services. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Use
open close
ASK A DOCTOR ONLINE
I have read and I do accept terms of use - Telemedicine

Advantage Medindia: FREE subscription for 'Personalised Health & Wellness website with consultation' (Value Rs.300/-)