Know more

Our use of cookies

Cookies are a set of data stored on a user’s device when the user browses a web site. The data is in a file containing an ID number, the name of the server which deposited it and, in some cases, an expiry date. We use cookies to record information about your visit, language of preference, and other parameters on the site in order to optimise your next visit and make the site even more useful to you.

To improve your experience, we use cookies to store certain browsing information and provide secure navigation, and to collect statistics with a view to improve the site’s features. For a complete list of the cookies we use, download “Ghostery”, a free plug-in for browsers which can detect, and, in some cases, block cookies.

Ghostery is available here for free:

You can also visit the CNIL web site for instructions on how to configure your browser to manage cookie storage on your device.

In the case of third-party advertising cookies, you can also visit the following site:, offered by digital advertising professionals within the European Digital Advertising Alliance (EDAA). From the site, you can deny or accept the cookies used by advertising professionals who are members.

It is also possible to block certain third-party cookies directly via publishers:

Cookie type

Means of blocking

Analytical and performance cookies

Google Analytics

Targeted advertising cookies


The following types of cookies may be used on our websites:

Mandatory cookies

Functional cookies

Social media and advertising cookies

These cookies are needed to ensure the proper functioning of the site and cannot be disabled. They help ensure a secure connection and the basic availability of our website.

These cookies allow us to analyse site use in order to measure and optimise performance. They allow us to store your sign-in information and display the different components of our website in a more coherent way.

These cookies are used by advertising agencies such as Google and by social media sites such as LinkedIn and Facebook. Among other things, they allow pages to be shared on social media, the posting of comments, and the publication (on our site or elsewhere) of ads that reflect your centres of interest.

Our EZPublish content management system (CMS) uses CAS and PHP session cookies and the New Relic cookie for monitoring purposes (IP, response times).

These cookies are deleted at the end of the browsing session (when you log off or close your browser window)

Our EZPublish content management system (CMS) uses the XiTi cookie to measure traffic. Our service provider is AT Internet. This company stores data (IPs, date and time of access, length of the visit and pages viewed) for six months.

Our EZPublish content management system (CMS) does not use this type of cookie.

For more information about the cookies we use, contact INRA’s Data Protection Officer by email at or by post at:

24, chemin de Borde Rouge –Auzeville – CS52627
31326 Castanet Tolosan CEDEX - France

Dernière mise à jour : Mai 2018

Menu Logo Principal Oniris

Home page

Campylobacter infections

The study of the responses of bacteria to their environment is one of Secalim's main themes. Campylobacter is one of Secalim's model bacteria

Campylobacter infections
New publication of Secalim

Campylobacter jejuni is the most common pathogen among foodborne bacterial infections in Europe, with over 200,000 cases reported at an estimated cost of 2.4 billion euros per year. This bacterium is found mainly on poultry meat during evisceration. It has the ability to activate mechanisms that allow it to resist and therefore persist throughout the implementation of agri-food processes. To develop prevention strategies, it is useful to better understand this pathogen and its adaptation mechanisms. One of the key stages associated with the adaptation of bacteria is the passage from the exponential phase of growth to the stationary phase. Molecular mechanisms driving this transition in many bacteria are not present in C. jejuni.
By comparing the proteome (technique used 2D-SDS-PAGE) and the expression of genes (technique used qRT PCR) in exponential phase and in stationary phase of growth of C. jejuni, a regulatory factor called CosR, overexpressed in stationary phase, has been highlighted. The transient increase in the number of CosR transcripts during the transition from the exponential phase to the stationary phase could be at the origin of a negative autoregulation of the gene encoding this regulator. It was shown in this study that the CosR protein binds to its own promoter region, confirming this hypothesis. Bioinformatics analyzes carried out on the complete genome of several strains of C. jejuni have made it possible to refine the consensus DNA binding sequence of this protein in the promoter region of these genes. This work now consists of determining the regulon of CosR in order to understand the metabolic pathways controlled by this protein in the stationary phase.

Partners : this work was carried out in collaboration with the University of Chemistry and Technology of Prague in the framework of the European project Cost BacFoodNet and the project Hubert Curien SARPAC.