{"id":9677,"date":"2025-03-26T07:00:00","date_gmt":"2025-03-26T10:00:00","guid":{"rendered":"https:\/\/gastropedia.pub\/pt\/?p=9677"},"modified":"2025-03-26T13:43:24","modified_gmt":"2025-03-26T16:43:24","slug":"terapia-dupla-com-altas-doses-de-amoxicilina-faz-sentido-utilizar-para-erradicacao-de-helicobacter-pylori","status":"publish","type":"post","link":"https:\/\/gastropedia.pub\/pt\/gastroenterologia\/terapia-dupla-com-altas-doses-de-amoxicilina-faz-sentido-utilizar-para-erradicacao-de-helicobacter-pylori\/","title":{"rendered":"Terapia dupla com altas doses de amoxicilina: faz sentido utilizar para erradica\u00e7\u00e3o de Helicobacter pylori?"},"content":{"rendered":"<div class=\"pdfprnt-buttons pdfprnt-buttons-post pdfprnt-top-right\"><a href=\"https:\/\/gastropedia.pub\/pt\/wp-json\/wp\/v2\/posts\/9677?print=pdf\" class=\"pdfprnt-button pdfprnt-button-pdf\" target=\"_blank\" ><img decoding=\"async\" src=\"https:\/\/gastropedia.pub\/pt\/wp-content\/plugins\/pdf-print\/images\/pdf.png\" alt=\"image_pdf\" title=\"Ver PDF\" \/><\/a><a href=\"https:\/\/gastropedia.pub\/pt\/wp-json\/wp\/v2\/posts\/9677?print=print\" class=\"pdfprnt-button pdfprnt-button-print\" target=\"_blank\" ><img decoding=\"async\" src=\"https:\/\/gastropedia.pub\/pt\/wp-content\/plugins\/pdf-print\/images\/print.png\" alt=\"image_print\" title=\"Conte\u00fado de impress\u00e3o\" \/><\/a><\/div>\n<p>Diante da crescente resist\u00eancia \u00e0 claritromicina, s\u00e3o necess\u00e1rias novas estrat\u00e9gias para tentar aumentar as taxas de erradica\u00e7\u00e3o do tratamento para <em>Helicobacter pylori<\/em>. <strong>Uma das abordagens poss\u00edveis \u00e9 o uso de terapia dupla com altas doses de amoxicilina<\/strong>, que inclusive j\u00e1 \u00e9 citada por diversas vezes em um dos principais consensos recentes sobre <em>Helicobacter pylori<\/em> (Maastricht VI).<sup>1<\/sup><\/p>\n\n\n\n<p><strong>Segundo o Maastricht VI<\/strong>, mais estudos s\u00e3o necess\u00e1rios antes de uma recomenda\u00e7\u00e3o forte, mas <strong>em \u00e1reas com alta resist\u00eancia a claritromicina (&gt; 15%), a terapia com altas doses de amoxicilina j\u00e1 pode inclusive ser considerada um esquema de primeira linha<\/strong> em alternativa \u00e0 terapia qu\u00e1drupla com bismuto, principalmente onde o bismuto e a tetraciclina s\u00e3o pouco dispon\u00edveis.<sup>1<\/sup><\/p>\n\n\n\n<p>Em uma metan\u00e1lise que incluiu 4 ensaios randomizados com terapia com altas doses de amoxicilina + inibidor de bomba de pr\u00f3tons em pacientes com pelo menos uma falha terap\u00eautica pr\u00e9via, a taxa de erradica\u00e7\u00e3o foi de 81%.<sup>2<\/sup> Com isso, observa-se que essa tamb\u00e9m seria uma abordagem poss\u00edvel para tratamento ap\u00f3s a primeira linha, com resultados compar\u00e1veis a outras terapias.<\/p>\n\n\n\n<p>Neste texto, iremos trazer os resultados de uma interessante publica\u00e7\u00e3o japonesa de 2023, onde Furuta e colaboradores revisaram os principais estudos com terapia dupla com amoxicilina para erradica\u00e7\u00e3o do <em>Helicobacter pylori<\/em>.<sup>3 <\/sup>Este estudo pode ser acessado na \u00edntegra no seguinte link: <a href=\"https:\/\/www.mdpi.com\/2077-0383\/12\/9\/3110\">https:\/\/www.mdpi.com\/2077-0383\/12\/9\/3110<\/a> .<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-terapia-dupla-com-inibidor-de-bomba-de-protons\"><br><strong>Terapia dupla com inibidor de bomba de pr\u00f3tons<\/strong><\/h2>\n\n\n\n<p><br>A terapia dupla com amoxicilina est\u00e1 longe de ser algo novo. Ela j\u00e1 foi bastante utilizada no passado, mas foi substitu\u00edda ap\u00f3s resultados inicialmente satisfat\u00f3rios da cl\u00e1ssica terapia tripla (IBP, amoxicilina e claritromicina). Contudo, com o aumento da resist\u00eancia \u00e0 claritromicina, voltamos a olhar estes resultados. Na Tabela 1, temos uma lista de trabalhos que usaram terapia dupla IBP + amoxicilina.<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><div class=\"pcrstb-wrap\"><table class=\"has-very-light-gray-to-cyan-bluish-gray-gradient-background has-background\"><thead><tr><th><br><strong>Autor<\/strong><\/th><th><br><strong>Ano<\/strong><\/th><th><br><strong>Amoxicilina<\/strong><\/th><th><br><strong>IBP<\/strong><\/th><th><br><strong>Dura\u00e7\u00e3o<\/strong><\/th><th><br><strong>n<\/strong><\/th><th><br><strong>Erradica\u00e7\u00e3o<\/strong><\/th><\/tr><\/thead><tbody><tr><td><strong>Furuta<\/strong><\/td><td>2001<\/td><td>500 mg 6\/6h<\/td><td>Rabeprazol 10 mg 6\/6h<\/td><td>14 dias<\/td><td>17<\/td><td>100.0%<\/td><\/tr><tr><td><strong>Tai<\/strong><\/td><td>2019<\/td><td>750 mg 6\/6h<\/td><td>Esomeprazol 40 mg 8\/8h<\/td><td>14 dias<\/td><td>120<\/td><td>91.7%<\/td><\/tr><tr><td><strong>Shirai<\/strong><\/td><td>2007<\/td><td>500 mg 6\/6h<\/td><td>Rabeprazol 10 mg 6\/6h<\/td><td>14 dias<\/td><td>66<\/td><td>90.9%<\/td><\/tr><tr><td><strong>Bayerdorffer<\/strong><\/td><td>1995<\/td><td>750 mg 8\/8h<\/td><td>Omeprazol 40 mg 8\/8h<\/td><td>14 dias<\/td><td>139<\/td><td>90.6%<\/td><\/tr><tr><td><strong>Furuta<\/strong><\/td><td>2010<\/td><td>500 mg 6\/6h<\/td><td>Rabeprazol 10 mg 6\/6h<\/td><td>14 dias<\/td><td>49<\/td><td>87.8%<\/td><\/tr><tr><td><strong>Miehlke<\/strong><\/td><td>2003<\/td><td>750 mg 6\/6h<\/td><td>Omeprazol 40 mg 6\/6h<\/td><td>14 dias<\/td><td>38<\/td><td>83.8%<\/td><\/tr><tr><td><strong>Furuta<\/strong><\/td><td>2001<\/td><td>500 mg 8\/8h<\/td><td>Rabeprazol 10 mg 12\/12h<\/td><td>14 dias<\/td><td>97<\/td><td>81.4%<\/td><\/tr><tr><td><strong>Schwartz<\/strong><\/td><td>1998<\/td><td>1000 mg 8\/8h<\/td><td>Lansoprazol 30 mg 8\/8h<\/td><td>14 dias<\/td><td>51<\/td><td>77%<\/td><\/tr><tr><td><strong>Miehkle<\/strong><\/td><td>2006<\/td><td>1000 mg 8\/8h<\/td><td>Omeprazol 40 mg 8\/8h<\/td><td>14 dias<\/td><td>72<\/td><td>70%<\/td><\/tr><tr><td><strong>Miyoshi<\/strong><\/td><td>2001<\/td><td>500 mg 8\/8h<\/td><td>Omeprazol 20 mg 12\/12h<\/td><td>14 dias<\/td><td>98<\/td><td>66.3%<\/td><\/tr><tr><td><strong>Nishizawa<\/strong><\/td><td>2012<\/td><td>500 mg 6\/6h<\/td><td>Rabeprazol 10 mg 6\/6h<\/td><td>14 dias<\/td><td>46<\/td><td>63.0%<\/td><\/tr><tr><td><strong>Moiyoshi<\/strong><\/td><td>2001<\/td><td>500 mg 8\/8h<\/td><td>Rabeprazol 10 mg 8\/8h<\/td><td>14 dias<\/td><td>101<\/td><td>62.4%<\/td><\/tr><tr><td><strong>Isomoto<\/strong><\/td><td>2003<\/td><td>1000 mg 12\/12h<\/td><td>Rabeprazol 20 mg 12\/12h<\/td><td>14 dias<\/td><td>63<\/td><td>59%<\/td><\/tr><tr><td><strong>Wong<\/strong><\/td><td>2000<\/td><td>1000 mg 12\/12h<\/td><td>Lansoprazol 30 mg 12\/12h<\/td><td>14 dias<\/td><td>75<\/td><td>57%<\/td><\/tr><tr><td><strong>Attumi<\/strong><\/td><td>2014<\/td><td>1000 mg 12\/12h<\/td><td>Dexlansoprazol 120 mg 12\/12h<\/td><td>14 dias<\/td><td>13<\/td><td>53.8%<\/td><\/tr><tr><td><strong>Schwartz<\/strong><\/td><td>1998<\/td><td>1000 mg 8\/8h<\/td><td>Lansoprazol 30 mg 12\/12h<\/td><td>14 dias<\/td><td>49<\/td><td>53%<\/td><\/tr><tr><td><strong>Koizumi<\/strong><\/td><td>1998<\/td><td>500 mg 8\/8h<\/td><td>Omeprazol 20 mg 1x\/d<\/td><td>14 dias<\/td><td>25<\/td><td>52%<\/td><\/tr><tr><td><strong>Furuta<\/strong><\/td><td>1998<\/td><td>500 mg 6\/6h<\/td><td>Omeprazol 20 mg 1x\/d<\/td><td>14 dias<\/td><td>62<\/td><td>50%<\/td><\/tr><tr><td><strong>Bell<\/strong><\/td><td>1995<\/td><td>500 mg 8\/8h<\/td><td>Omeprazol 40 mg 1x\/d<\/td><td>14 dias<\/td><td>60<\/td><td>46%<\/td><\/tr><tr><td><strong>Cottrill<\/strong><\/td><td>1997<\/td><td>1000 mg 12\/12h<\/td><td>Omeprazol 40 mg 1x\/d<\/td><td>14 dias<\/td><td>85<\/td><td>44%<\/td><\/tr><tr><td><strong>Kagaya<\/strong><\/td><td>2000<\/td><td>750 mg 12\/12h<\/td><td>Lansoprazol 30 mg 1x\/d<\/td><td>14 dias<\/td><td>24<\/td><td>43%<\/td><\/tr><\/tbody><\/table><\/div><figcaption class=\"wp-element-caption\"><br>Tabela 1: Trabalhos que utilizaram terapia dupla IBP + amoxicilina. Retirado de Furuta T et al (2023).<br><sup>3<\/sup><\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-terapia-dupla-com-bloqueadores-acidos-competitivos-de-potassio\"><br><strong>Terapia dupla com bloqueadores \u00e1cidos competitivos de pot\u00e1ssio<\/strong><\/h2>\n\n\n\n<p>Os bloqueadores \u00e1cidos competitivos de pot\u00e1ssio (\ufeff<em>potassium-competitive acid blocker<\/em> &#8211; <strong>PCABs<\/strong>) s\u00e3o caracterizados por <strong>r\u00e1pido in\u00edcio de a\u00e7\u00e3o e um perfil antissecretor que independe da CYP2C19 ou da ativa\u00e7\u00e3o de c\u00e9lulas parietais<\/strong>. Essas caracter\u00edsticas trazem a <strong>oportunidade de melhorar a erradica\u00e7\u00e3o do tratamento de <\/strong><em><strong>H. pylori<\/strong><\/em>, particularmente simplificando os regimes e desenvolvendo terapia dupla efetiva.<\/p>\n\n\n\n<p><strong>Qual o racional disso?<\/strong> Bom, a amoxicilina exerce sua atividade antibactericida ligando-se \u00e0 prote\u00edna ligadora de penicilina (PLP). Em um pH \u00e1cido, em torno de 3.0, o <em>H. pylori<\/em> prolifera menos e a express\u00e3o de PLP \u00e9 baixa, ao passo que no pH 7.4 o <em>H. pylori<\/em> prolifera bastante e a express\u00e3o de PLP tamb\u00e9m aumenta.<sup>4<\/sup> Portanto, quando o pH est\u00e1 mais elevado, o n\u00famero de alvos da amoxicilina aumenta e provavelmente ela se torna mais efetiva e est\u00e1vel. <strong>Um bloqueio \u00e1cido mais efetivo consequentemente contribui para o sucesso da erradica\u00e7\u00e3o<\/strong>.<\/p>\n\n\n\n<p>De fato, o primeiro estudo com terapia dupla e vonoprazana apresentou um taxa de erradica\u00e7\u00e3o de 92.9%, que foi semelhante \u00e0 terapia tripla com vonoprazana + amoxicilina + claritromicina.<sup>5<\/sup> Desde ent\u00e3o, foram publicados diversos estudos com esse regime (Tabela 2), utilizando diferentes posologias e tempos de tratamento e obtendo resultados em geral superiores \u00e0 terapia dupla com IBP (Tabela 1).<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><div class=\"pcrstb-wrap\"><table class=\"has-very-light-gray-to-cyan-bluish-gray-gradient-background has-background\"><thead><tr><th><strong>Autor<\/strong><\/th><th><strong>Ano<\/strong><\/th><th><strong>Amoxicilina<\/strong><\/th><th><br><strong>Vonoprazana<\/strong><br><\/th><th><strong>Dura\u00e7\u00e3o<\/strong><\/th><th><strong>n<\/strong><\/th><th><strong>Erradica\u00e7\u00e3o<\/strong><\/th><\/tr><\/thead><tbody><tr><td><strong>Gao<\/strong><\/td><td>2022<\/td><td>1000 mg 8\/8h ou 750 mg 6\/6h<\/td><td>10 mg 12\/12h<\/td><td>14 dias<\/td><td>43<\/td><td>95.3%<\/td><\/tr><tr><td><strong>Zuberi<\/strong><\/td><td>2022<\/td><td>1000 mg 12\/12h<\/td><td>20 mg 12\/12h<\/td><td>14 dias<\/td><td>92<\/td><td>93.5%<\/td><\/tr><tr><td><strong>Qian<\/strong><\/td><td>2022<\/td><td>750 mg 6\/6h<\/td><td>20 mg 12\/12h<\/td><td>10 dias<\/td><td>125<\/td><td>93.4%<\/td><\/tr><tr><td><strong>Furuta<\/strong><\/td><td>2019<\/td><td>500 mg 8\/8h<\/td><td>20 mg 12\/12h<\/td><td>7 dias<\/td><td>56<\/td><td>92.9%<\/td><\/tr><tr><td><strong>Gao<\/strong><\/td><td>2022<\/td><td>1000 mg 8\/8h ou 750 mg 6\/6h<\/td><td>20 mg 12\/12h<\/td><td>14 dias<\/td><td>143<\/td><td>91.6%<\/td><\/tr><tr><td><strong>Sue<\/strong><\/td><td>2022<\/td><td>500 mg 6\/6h<\/td><td>20 mg 12\/12h<\/td><td>7 dias<\/td><td>20<\/td><td>90.0%<\/td><\/tr><tr><td><strong>Hu<\/strong><\/td><td>2022<\/td><td>1000 mg 12\/12h<\/td><td>20 mg 12\/12h<\/td><td>10 dias<\/td><td>37<\/td><td>89.2%<\/td><\/tr><tr><td><strong>Hu<\/strong><\/td><td>2022<\/td><td>1000 mg 12\/12h<\/td><td>20 mg 12\/12h<\/td><td>14 dias<\/td><td>55<\/td><td>89.1%<\/td><\/tr><tr><td><strong>Hu<\/strong><\/td><td>2022<\/td><td>1000 mg 8\/8h<\/td><td>20 mg 12\/12h<\/td><td>14 dias<\/td><td>55<\/td><td>87.3%<\/td><\/tr><tr><td><strong>Qian<\/strong><\/td><td>2022<\/td><td>1000 mg 12\/12h<\/td><td>20 mg 12\/12h<\/td><td>10 dias<\/td><td>125<\/td><td>85.1%<\/td><\/tr><tr><td><strong>Gotoda<\/strong><\/td><td>2020<\/td><td>750 mg 12\/12h<\/td><td>20 mg 12\/12h<\/td><td>7 dias<\/td><td>60<\/td><td>85.0%<\/td><\/tr><tr><td><strong>Suzuki<\/strong><\/td><td>2020<\/td><td>750 mg 12\/12h<\/td><td>20 mg 12\/12h<\/td><td>7 dias<\/td><td>168<\/td><td>84.5%<\/td><\/tr><tr><td><strong>Hu<\/strong><\/td><td>2022<\/td><td>1000 mg 8\/8h<\/td><td>20 mg 12\/12h<\/td><td>10 dias<\/td><td>37<\/td><td>81.1%<\/td><\/tr><tr><td><strong>Hu<\/strong><\/td><td>2022<\/td><td>1000 mg 8\/8h<\/td><td>20 mg 12\/12h<\/td><td>7 dias<\/td><td>21<\/td><td>81.0%<\/td><\/tr><tr><td><strong>Chey<\/strong><\/td><td>2022<\/td><td>1000 mg 8\/8h<\/td><td>20 mg 12\/12h<\/td><td>14 dias<\/td><td>324<\/td><td>78.5%<\/td><\/tr><tr><td><strong>Hu<\/strong><\/td><td>2022<\/td><td>1000 mg 12\/12h<\/td><td>20 mg 12\/12h<\/td><td>7 dias<\/td><td>24<\/td><td>66.7%<\/td><\/tr><tr><td><strong>Lin<\/strong><\/td><td>2022<\/td><td>500 mg 6\/6h<\/td><td>20 mg 12\/12h<\/td><td>7 dias<\/td><td>61<\/td><td>60.7%<\/td><\/tr><tr><td><strong>Lin<\/strong><\/td><td>2022<\/td><td>750 mg 6\/6h<\/td><td>20 mg 12\/12h<\/td><td>7 dias<\/td><td>84<\/td><td>58.3%<\/td><\/tr><\/tbody><\/table><\/div><figcaption class=\"wp-element-caption\"><br>Tabela 2: Trabalhos que utilizaram terapia dupla vonoprazana + amoxicilina. Retirado de Furuta T et al (2023).<br><sup>3<\/sup><\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-mensagens-finais\"><br><strong>Mensagens finais<\/strong><\/h2>\n\n\n\n<p class=\"has-very-light-gray-to-cyan-bluish-gray-gradient-background has-background\">O grande m\u00e9rito da terapia dupla com altas doses de amoxicilina \u00e9<strong> reduzir os riscos de efeitos adversos e intera\u00e7\u00f5es medicamentosas, sem reduzir as taxas de erradica\u00e7\u00e3o do<\/strong> <em><strong>H. pylori<\/strong><\/em>. O uso de <strong>vonoprazana parece potencializar estes benef\u00edcios<\/strong>. Os dados, contudo, devem idealmente ainda ser replicados na popula\u00e7\u00e3o brasileira.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-referencias\"><strong>Refer\u00eancias<\/strong><\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Malfertheiner P, Megraud F, Rokkas T, Gisbert JP, Liou JM, Schulz C, et al. Management of Helicobacter pylori infection: the Maastricht VI\/Florence consensus report. Gut 2022;71:1724\u201362. doi:10.1136\/gutjnl-2022-327745.<\/li>\n\n\n\n<li>Gao CP, Zhou Z, Wang JZ, et al. Efficacy and safety of high- dose dual therapy for Helicobacter pylori rescue therapy: a systematic review and meta- analysis. J Dig Dis 2016;17:811\u20139.<\/li>\n\n\n\n<li>Furuta T, Yamade M, Higuchi T, Takahashi S, Ishida N, Tani S, et al. Expectations for the Dual Therapy with Vonoprazan and Amoxicillin for the Eradication of H. pylori. J Clin Med 2023;12. doi:10.3390\/jcm12093110.<\/li>\n\n\n\n<li>Marcus, E.A.; Inatomi, N.; Nagami, G.T.; Sachs, G.; Scott, D.R. The effects of varying acidity on Helicobacter pylori growth and the bactericidal efficacy of ampicillin. Aliment. Pharmacol. Ther. 2012, 36, 972\u2013979.<\/li>\n\n\n\n<li>Furuta, T.; Yamade, M.; Kagami, T.; Uotani, T.; Suzuki, T.; Higuchi, T.; Tani, S.; Hamaya, Y.; Iwaizumi, M.; Miyajima, H.; et al. Dual Therapy with Vonoprazan and Amoxicillin Is as Effective as Triple Therapy with Vonoprazan, Amoxicillin and Clarithromycin for Eradication of Helicobacter pylori. Digestion 2019, 101, 743\u2013751.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-como-citar-este-artigo\"><strong>Como citar este artigo<\/strong><\/h2>\n\n\n\n<p class=\"has-very-light-gray-to-cyan-bluish-gray-gradient-background has-background\">Lages RB. Terapia dupla com altas doses de amoxicilina: faz sentido utilizar para erradica\u00e7\u00e3o de Helicobacter pylori? Gastropedia 2025, Vol. 1. Dispon\u00edvel em: <a href=\"https:\/\/gastropedia.pub\/pt\/?p=9677\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/gastropedia.pub\/pt\/gastroenterologia\/terapia-dupla-com-altas-doses-de-amoxicilina-faz-sentido-utilizar-para-erradicacao-de-helicobacter-pylori\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Diante da crescente resist\u00eancia \u00e0 claritromicina, s\u00e3o necess\u00e1rias novas estrat\u00e9gias para tentar aumentar as taxas de erradica\u00e7\u00e3o do tratamento para Helicobacter pylori. Uma das abordagens poss\u00edveis \u00e9 o uso de&hellip;<\/p>\n","protected":false},"author":4165,"featured_media":9679,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[20,18],"tags":[],"ano":[413],"tipo":[121],"volume":[57],"class_list":["post-9677","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-estomago","category-gastroenterologia","ano-413","tipo-assuntos-gerais","volume-volume-i"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.2 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Terapia dupla com altas doses de amoxicilina: faz sentido utilizar para erradica\u00e7\u00e3o de Helicobacter pylori? - Gastropedia<\/title>\n<meta name=\"description\" content=\"Descubra se a terapia dupla com altas doses de amoxicilina \u00e9 eficaz para erradicar o Helicobacter pylori. 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