Pourquoi la vente des substituts à la nicotine est désormais limitée — Coronavirus

25 Avril, 2020, 09:08 | Auteur: Yves Courtet
  • Et si la nicotine protégeait contre le coronavirus

Pour les scientifiques, il n'est pas question que l'hypothèse de vertus préventives de la nicotine contre le coronavirus conduise à une augmentation de la consommation de cigarettes ou des patchs anti-tabac.

Une théorie s'intéresse pour le moment à l'effet protecteur que pourrait avoir la nicotine. Par l'entremise d'une connaissance commune (le Prix Nobel de physique Serge Haroche), le professeur Zahir Amoura rencontre il y a un mois le neurobiologiste de renommée mondiale Jean-Pierre Changeux.

Pour plus de données, une étude a été lancée avec 350 patients hospitalisés et 130 autres avec des symptômes plus légers de Covid-19 qui avaient été vus en ambulatoire. Il était surprenant qu'il y ait eu relativement peu de cas graves de Covid-19 parmi la population carcérale et parmi les patients des hôpitaux psychiatriques, des groupes avec un taux élevé de tabagisme. D'après une étude publiée par l'Académie des Sciences, les accros à la cigarette seraient moins atteints que les autres personnes par le virus. Les chercheurs ont pris en compte 500 malades, tous testés positifs, et ont regardé s'ils fumaient plus ou moins que la population générale de même sexe ou de même âge.

Tout en soutenant les essais cliniques menés par les chercheurs, le ministre de la Santé, Olivier Véran, qui a mis en garde sur les risques des patchs de nicotine, enjoint les Français, notamment les non-fumeurs, à ne pas se jeter sur le tabac. D'après le Pr Amoura, des patients fumeurs hospitalisés pourraient voir leur état s'aggraver en raison d'un sevrage brutal du tabac, mais cela mérite d'être vérifié.

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En effet, avoir mille et une tâches à accomplir à la fois, ça peut avoir des effets négatifs. En effet, les travailleurs effectuent les tâches beaucoup plus rapidement tout en conservant leur qualité de vie.

" Il faut rester très prudent parce que pour l'instant (...) Il n'y a que quelques études chinoises et quelques études américaines", déclare également sur FranceInfo Marion Adler médecin tabacologue à l'hôpital Antoine Béclère de Clamart (Hauts-de-Seine).

Dès le feu vert final obtenu, des patchs nicotiniques vont être administrés à des dosages différents dans trois essais, à l'hôpital de La Pitié-Salpêtrière à Paris: en préventif à des soignants, pour voir si cela les protège; en thérapeutique à des patients hospitalisés en médecine, pour tenter de diminuer leurs symptômes; et enfin à des patients graves en réanimation, détaille le Pr Amoura.

"Ceux qui ne fument pas ne doivent pas se ruer sur les substituts nicotiniques, qui ont des effets secondaires", a indiqué le numéro deux du ministère de la Santé, qui a tenu à rappeler que le tabac est le premier tueur de France, avec 75.000 morts chaque année. Il ne s'agit pas d'inciter les gens à fumer, mais ils ne peuvent pas non plus cacher la découverte.

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