I've been living in France for a while yet have been unable to find something similar to Italian panna for pasta use. Does anyone know if such thing exists in here? 
If you mean something like "Chef Panna Classica", the ingredient list says it's cream (21.5% fat) with added stabilizer (carrageen). If I remember correctly, cream in France labelled "légère" which means "light" is often around 15 to 20% fat. Check the label. If the cream looks a bit thinner that what you are used to, probably because it doesn't contain carrageen which is a kind of thickener, then perhaps you could add a little cornflour (aka cornstarch) to a recipe. Here in the UK, the closest would be what we call "single cream", which is approx 18% fat, but doesn't contain stabilizers/thickeners either. 