Estudo: dieta rica em gordura abre passagem de bactérias ao cérebro

Dieta rica em gordura abre passagem de bactérias ao cérebro, diz estudo

[{"selector":"#anim-275e437f-0823-4fd2-96f2-a1f08db18eeb","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-b19489ff-fe70-49ed-b2b6-a2503e2177b6","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-6ae3082c-c053-4fa6-ae98-5579a9de3bff","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-9afcfee3-e346-47b7-9479-2cf910b3f10c","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Pexels/Tim Samuel

[{"selector":"#anim-76551087-28ba-452c-874e-bd3246c3d56b","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-379ec598-0839-4fdd-baba-3d337b8a0d83","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-48bf8d39-4bfc-4c76-ad43-e1878834e8e4","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-7381845f-77f7-4e47-ac27-08e1b5e2fed1","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-89ff941b-25c5-4c84-ba64-19304ffd8635 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(12.514648210040342%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] A chamada conexão intestino-cérebro , assunto muito discutido por pesquisadores nas últimas décadas, é um sistema de comunicação bidirecional e bioquímico que interliga o trato gastrointestinal ao sistema nervoso central (SNC) Pexels/ Matthias Zomer

[{"selector":"#anim-9aa3c155-2d86-42f6-82d6-aa4c67455709","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-eecf2373-33cc-4f61-9e67-e4285743a047","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-aa5287d6-d62f-4969-8742-398d998ec038","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-7b18fb15-8a29-4ee8-8f96-0cc992a944d2","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-74f36f23-b967-49d8-a312-ff75a935a07b [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(-12.514648210040342%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] Essa conexão de mão dupla é atribuída principalmente a três fatores: sinais químicos como hormônios e serotonina (da qual cerca de 90% é produzida no intestino), metabólitos bacterianos e modulação do sistema imunológico Pexels/Edward Jenner

[{"selector":"#anim-6215db95-7a8b-49d7-9933-135bdd06b707","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-ef8b2281-9430-4b46-b918-e313c3fdea90","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-dee2a6f6-63b5-4b1e-86f6-dda6ad0cc171","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-de2cb704-6e20-4ae6-afc8-a1da5f46b0af","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-4f7f9e69-fb6b-40e1-abc4-d70b436d16af [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(12.514648210040342%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] Agora, uma equipe de pesquisadores demonstrou um mecanismo totalmente diferente e muito mais direto: as próprias bactérias , e não apenas seus subprodutos químicos, podem fisicamente migrar do intestino para o cérebro pelo nervo vago Pexels/Klaus Nielsen

[{"selector":"#anim-2d39bbf3-b226-44d3-9607-8b47040aa8cd","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-bd66ac1c-c8f7-4b23-83a0-92f528c15826","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-c9274cfb-9860-49bb-b1e6-b6c0ecce2808","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-c9c31144-3ba2-43ac-9b1f-8ec006088f84","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-3a105abf-ce79-44d3-8afb-c79fc6125a29 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(9.076721401361155%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] Publicado recentemente na revista científica PLOS Biology, o estudo descreve como os autores flagraram bactérias vivas translocando “diretamente” para o cérebro de camundongos sem passar pela corrente sanguínea Pexels/Pixabay

[{"selector":"#anim-4bd13439-c7ec-41e5-8ef9-46b7645e6d42","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-633adb6c-0f68-47f9-af46-d77b9545d9d5","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-72bc1930-a33c-41eb-b364-27e9155f2d97","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-8c726385-c989-4bfa-96b7-1fa9feb88bc0","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-4dd536e3-fd3f-4903-b472-f23062ddd556 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(12.514648210040342%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] Como o fenômeno ocorre em pequenas quantidades, isso significa que não se trata de uma infecção declarada, como ocorreria na meningite Pexels/Turgay Koca

[{"selector":"#anim-dea35437-9a5b-41a6-96ca-e8a6a52d80bc","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-3cfea10b-dab1-455f-8ebc-314809cefff5","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-1eeb10e4-8921-439c-a6c2-3ac4d13b9cce","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-18f46bae-941f-4738-a063-8c01d0fbce25","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-d97ae977-d9c0-4a55-8fc6-af1bc4d64aa4 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(-12.514648210040342%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] O que mais surpreendeu, no entanto, foi a causa da travessia: uma dieta altamente gordurosa e agressiva para o organismo Pexels/Jonathan Borba

[{"selector":"#anim-c88c2392-7cef-4686-bc5b-db75fe49f892","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-5ee2dae5-002f-42df-81c5-6197d4a96c10","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-cd2109ef-2d5f-4112-beee-659abe0fe6d5","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-fb752496-db96-4e7c-b897-4b5f4e68f2e3","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-f1e459b1-e6b8-4fac-a7ab-faee48a703f5 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(12.514648210040342%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] Essa combinação causou um desequilíbrio na microbiota — a disbiose — que enfraqueceu a barreira intestinal. Com isso, algumas bactérias simplesmente vazaram por essas brechas e usaram o nervo vago como atalho para chegar ao cérebro Pexels/Anna Shvets

CNNBRASIL.COM.BR

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