Resumo
Objetivo: Analisar a associação entre níveis de marcadores inflamatórios sistêmicos e a gravidade dos sintomas em pacientes adultos diagnosticados com Transtorno Depressivo Maior. Métodos: Trata-se de uma revisão integrativa da literatura realizada através das bases PubMED, Biblioteca Virtual em Saúde (BVS) e Periódico CAPES, usando os descritores: “Depressive Disorder, Major”, “Inflammation Mediators” e “Depression”, e obtendo o truncamento de pesquisa: (Depressive Disorder, Major) AND (Inflammation Mediators) AND (Depression). Foram encontrados 1.731 artigos, filtrados conforme critérios de inclusão (idiomas português, inglês e espanhol; período de 2021 a 2026; artigos completos) e exclusão (artigos duplicados, resumos, fora do escopo). Resultados: O transtorno depressivo maior está associado a um estado de inflamação sistêmica de baixo grau, com elevação de citocinas pró-inflamatórias e desequilíbrios imunológicos. Esses processos influenciam diretamente vias neurobiológicas, como o metabolismo do triptofano e a neurotransmissão serotoninérgica, contribuindo para a gravidade dos sintomas. Além disso, a inflamação se relaciona a alterações estruturais e funcionais cerebrais e ao aumento do risco cardiometabólico, reforçando seu papel central na fisiopatologia do TDM. Conclusão: A inflamação sistêmica desempenha papel central na fisiopatologia e na gravidade do transtorno depressivo maior. Sua compreensão amplia possibilidades de estratificação de risco e de abordagens terapêuticas mais direcionadas.
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