OVERVIEW

Food Toxicology is a science that helps us understand the harmful effects of food contaminants and additives can have on human. Toxicology tries to know and identify the dose and through what mechanism the substances are hazard

AIMS AND CONTENT

LEARNING OUTCOMES

The main objective of Food Toxicology is to provide knowledge regarding the toxicological aspects related to food. Students will critically learn topics related to food toxicology. The interactions between xenobiotics and humans and the consequent onset of toxic effects will be discussed. Some toxicity tests and methods for toxicological risk assessment will be illustrated. The main toxicity factors and molecule targets of toxic agents, as well as the most recurrent toxicity mechanisms and organ toxicity, will be explored. The toxicological implications of the food adulteration or the presence of pesticide od durg residues, environmental pollutants or natural contaminants will be discussed too.

AIMS AND LEARNING OUTCOMES

The module in Food Toxicology aims to provide the basic knowledge of toxicology to explain the mechanisms of toxic agents underlying toxicological evets according to the modern toxicology. At the end of the course the students must know the toxicokinetic properties (time-action) of the xenobiotics, including the kinetic of absorption, distribution, metabolism and excretion, demonstrating that they have understood the dynamic principles of the action of chemicals, including dose - response curves, biochemical and physiological effects of xenobiotics and their molecular mechanisms. The students will also have to demonstrate knowledge of the toxicological tests and their interpretations.

TEACHING METHODS

The used teaching method involves frontal lectures with in-depth information on the program, and therefore it is advisable to attend the lessons.  The flipped classroom will use too, which aims to increase student engagement and learning of specific topics.
These activities would be carried out in pairs, in groups or alone and will require the creation of a final presentation to the class and feedback from the lecturer.

SYLLABUS/CONTENT

An introduction to the general principles of toxicology. Definition and aims of toxicology; toxicological responses: allergic reaction, idiosyncrasy, tolerance; local / systemic effects; acute / chronic effects.

Exposure route, frequency and duration of the exposure; dose-response relationships; threshold dose; hormesis; IT, log-probit transform and curve comparison; power and effectiveness

Toxicological risk and prevention: management of the toxicological data. Toxicological risk assessment for xenobiotics: hazard identification and risk characterization. Toxicity test: acute, subchronic and chronic tests.

Quantitative parameters (DL50, NOAEL, LOAEL, ADI, DNEL). Classification of chemicals. Toxicological test. Factors that influence the response to toxicological agents: individual variability, gender, age, intra-specie and inter-specie variability.

Toxicokinetics: absorption, biotransformation (phase I and II reactions: enzymes, cofactors), distribution and elimination of xenobiotics. Quantitative parameters: Vd, half-life, clearence. Induction and inhibition of CYP450.

Toxicodynamics: release from the exposure site and interaction with functional targets. Main molecular and cellular mechanisms of toxicity. Repair systems.

Carcinogenesis and chemical carcinogens: genotoxic and epigenetic substances

Developmental toxicology: teratogenic substances, mechanisms and kinetics; endocrine disruptors. Organ toxicity.

Special toxicology: contaminants in food, pesticides and environmental pollutants. Food contaminants of natural origin: phytotoxins, mycotoxins, bacterial toxins. Alcoholic beverages. Voluntary and food additives including dyes, flavors.

The food chain as a vehicle and concentration system for toxic substances.

RECOMMENDED READING/BIBLIOGRAPHY

Casarett & Doull Elementi di Tossicologia (a cura di Patrizia Hrelia, Giorgio Cantelli Forti). Casa Editrice Ambrosiana.  2013

Casarett and Doull’s Tossicologia: I fondamenti dell’azione delle sostanze tossiche - Ed. EMSI, 2010

Capuano A. – Dugo G. – Restani P.: Tossicologia degli Alimenti", Torino, UTET, 1998

TEACHERS AND EXAM BOARD

Exam Board

CHIARA CERVETTO (President)

GUIDO MAURA

MANUELA MARCOLI (President Substitute)

MARCO MILANESE (Substitute)

ANNA MARIA PITTALUGA (Substitute)

LESSONS

LESSONS START

For lessons start and timetable go to the link: https://easyacademy.unige.it/portalestudenti/

Please check the module Aulaweb page for timetable updates dependent on the sanitary and epidemic situation.

Class schedule

FOOD TOXICOLOGY

EXAMS

EXAM DESCRIPTION

To assess student’s achievement of learning, the examination will be an oral exam (30 minutes), always in presence of the Commission consisting of at least of two professors (or sometimes in presence of a professor and an expert subject designated by the CCS). 

ASSESSMENT METHODS

The Commission will verify the achievement of educational objectives with high accuracy by collecting information about the nature and extent of learning outcomes, capacity, as well as, connection and reasoning within the topics of the module. 
About the toxicokinetics: the student will have to know the kinetic properties (time-action) of toxic substances, also considering absorption, distribution, metabolism and excretion. 
As regards the mechanistic aspects: the student will have to know the molecular targets and the effects deriving from their interactions with the xenobiotic, as well as the main ways in which some xenobiotics induce cytotoxicity and cell death, genotoxicity and embryonic toxicity. 
As regards the achievement of the educational objectives on the dose-response curves: the student will have to be confident with the topic and able to describe gradual and quantal curves, the hormesis and probit transformation, identifying significant points of the curves. 
The Commission will also evaluate the student on the toxicity tests explained during the lessons, on toxicological effects due to metals and contaminants, like mycotoxins or other toxins considerated during lessons.
If the students don't achieve minimal educational objectives, the commission will invite them to improve their knowledge, using supplemental explanations by contacting the lecturer.

Exam schedule