{"id":15317,"date":"2026-03-13T14:38:35","date_gmt":"2026-03-13T13:38:35","guid":{"rendered":"https:\/\/www.future-live.com\/bacterial-biofilm-how-bacteria-defend-themselves-against-antibiotics\/"},"modified":"2026-03-13T21:42:22","modified_gmt":"2026-03-13T20:42:22","slug":"bacterial-biofilm-how-bacteria-defend-themselves-against-antibiotics","status":"publish","type":"post","link":"https:\/\/www.future-live.com\/en\/bacterial-biofilm-how-bacteria-defend-themselves-against-antibiotics\/","title":{"rendered":"Bacterial biofilm: how bacteria defend themselves against antibiotics"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row][vc_column width=&#8221;1\/6&#8243;][\/vc_column][vc_column width=&#8221;2\/3&#8243;][vc_column_text]When an infection seems to resolve only temporarily and tends to recur over time, the cause is often not an incorrect therapy, but a little-known biological mechanism: biofilm.<\/p>\n<p>Biofilm represents one of the primary survival strategies of bacteria and explains why many <strong>infections<\/strong> become <strong>persistent or recurrent<\/strong>, despite correct treatments.<\/p>\n<p>Understanding what biofilm is is a fundamental step in comprehending why some infections are so difficult to eliminate definitively.[\/vc_column_text][tm_spacer size=&#8221;lg:30&#8243;][\/vc_column][vc_column width=&#8221;1\/6&#8243;][\/vc_column][\/vc_row][vc_row][vc_column width=&#8221;1\/6&#8243;][\/vc_column][vc_column width=&#8221;2\/3&#8243;][vc_column_text]<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_65 ez-toc-wrap-center counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title \" >Indice<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.future-live.com\/en\/bacterial-biofilm-how-bacteria-defend-themselves-against-antibiotics\/#What_is_bacterial_biofilm\" title=\"What is bacterial biofilm\">What is bacterial biofilm<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.future-live.com\/en\/bacterial-biofilm-how-bacteria-defend-themselves-against-antibiotics\/#Why_bacteria_produce_biofilm\" title=\"Why bacteria produce biofilm\">Why bacteria produce biofilm<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.future-live.com\/en\/bacterial-biofilm-how-bacteria-defend-themselves-against-antibiotics\/#Biofilm_and_resistance_to_treatments\" title=\"Biofilm and resistance to treatments\">Biofilm and resistance to treatments<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.future-live.com\/en\/bacterial-biofilm-how-bacteria-defend-themselves-against-antibiotics\/#Why_biofilm_favors_recurrence\" title=\"Why biofilm favors recurrence\">Why biofilm favors recurrence<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.future-live.com\/en\/bacterial-biofilm-how-bacteria-defend-themselves-against-antibiotics\/#Escherichia_coli_biofilm_why_urinary_tract_infections_return\" title=\"Escherichia coli biofilm: why urinary tract infections return\">Escherichia coli biofilm: why urinary tract infections return<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.future-live.com\/en\/bacterial-biofilm-how-bacteria-defend-themselves-against-antibiotics\/#Candida_biofilm_why_candidiasis_tends_to_recur\" title=\"Candida biofilm: why candidiasis tends to recur\">Candida biofilm: why candidiasis tends to recur<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.future-live.com\/en\/bacterial-biofilm-how-bacteria-defend-themselves-against-antibiotics\/#Biofilm_as_a_new_target\" title=\"Biofilm as a new target\">Biofilm as a new target<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"What_is_bacterial_biofilm\"><\/span>What is bacterial biofilm<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>[\/vc_column_text][tm_spacer size=&#8221;lg:10&#8243;][vc_column_text]<strong>Biofilm<\/strong> is a<strong> protective structure<\/strong> produced by bacteria. It does not consist of isolated bacteria, but of microorganisms embedded within an extracellular matrix that they themselves secrete. <\/p>\n<p>This matrix is mainly composed of:<\/p>\n<ul>\n<li>polysaccharides<\/li>\n<li>proteins<\/li>\n<li>DNA fragments<\/li>\n<li>a large amount of water<\/li>\n<\/ul>\n<p>The result is a sort of viscous film that envelops the bacteria and protects them from the external environment.[\/vc_column_text][tm_spacer size=&#8221;lg:30&#8243;][vc_column_text]<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Why_bacteria_produce_biofilm\"><\/span>Why bacteria produce biofilm<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>[\/vc_column_text][tm_spacer size=&#8221;lg:10&#8243;][vc_column_text]In unfavorable conditions, such as the presence of antibiotics, the immune system response, or environmental stress, some bacteria activate biofilm production to protect themselves.<\/p>\n<p>Within the biofilm, bacteria:<\/p>\n<ul>\n<li>are less exposed to external agents<\/li>\n<li>slow down their metabolism<\/li>\n<li>increase their probability of survival<\/li>\n<\/ul>\n<p>This behavior does not make the infection more aggressive, but it makes it more difficult to eliminate.[\/vc_column_text][tm_spacer size=&#8221;lg:30&#8243;][\/vc_column][vc_column width=&#8221;1\/6&#8243;][\/vc_column][\/vc_row][vc_row][vc_column width=&#8221;1\/6&#8243;][\/vc_column][vc_column width=&#8221;2\/3&#8243;][vc_column_text]<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Biofilm_and_resistance_to_treatments\"><\/span>Biofilm and resistance to treatments<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>[\/vc_column_text][tm_spacer size=&#8221;lg:10&#8243;][vc_column_text]One of the most critical aspects of biofilm is its ability to hinder the action of traditional treatments.<br \/>\nBiofilm functions as a physical barrier that reduces the effectiveness of the immune response and slows down the penetration of antibiotics, protecting bacteria even when therapy is correct.<br \/>\nFurthermore, within the biofilm, bacterial cells can be present in a state of quiescence, showing low sensitivity to drugs that act on active microorganisms.[\/vc_column_text][tm_spacer size=&#8221;lg:20&#8243;][vc_column_text]<em>To learn more, read the article<\/em> <strong><a href=\"https:\/\/www.future-live.com\/en\/antibiotic-resistance-why-some-infections-dont-truly-heal\/\">Antibiotic resistance: why some infections don&#8217;t truly heal.<\/a><\/strong>[\/vc_column_text][tm_spacer size=&#8221;lg:40&#8243;][vc_column_text]<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Why_biofilm_favors_recurrence\"><\/span>Why biofilm favors recurrence<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>[\/vc_column_text][tm_spacer size=&#8221;lg:10&#8243;][vc_column_text]When a therapy reduces free bacteria, symptoms may improve. However, if the biofilm remains intact, a portion of the microorganisms can survive. <\/p>\n<p>Over time, these bacteria can reactivate and cause a new manifestation of the infection.<\/p>\n<p>This mechanism is at the base of many chronic and recurrent infections and is one of the reasons why some people experience repeated episodes of the same disorder.[\/vc_column_text][tm_spacer size=&#8221;lg:30&#8243;][vc_column_text]<\/p>\n<h4 class=\"pt-cv-title\"><span class=\"ez-toc-section\" id=\"Escherichia_coli_biofilm_why_urinary_tract_infections_return\"><\/span><a class=\"_self\" href=\"https:\/\/www.future-live.com\/en\/escherichia-coli-biofilm-why-urinary-tract-infections-return\/\" target=\"_self\" rel=\"noopener\">Escherichia coli biofilm: why urinary tract infections return<\/a><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<h4 class=\"pt-cv-title\"><span class=\"ez-toc-section\" id=\"Candida_biofilm_why_candidiasis_tends_to_recur\"><\/span><a class=\"_self\" href=\"https:\/\/www.future-live.com\/en\/candida-biofilm-why-candidiasis-tends-to-recur\/\" target=\"_self\" rel=\"noopener\">Candida biofilm: why candidiasis tends to recur<\/a><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>[\/vc_column_text][tm_spacer size=&#8221;lg:30&#8243;][\/vc_column][vc_column width=&#8221;1\/6&#8243;][\/vc_column][\/vc_row][vc_row][vc_column width=&#8221;1\/6&#8243;][\/vc_column][vc_column width=&#8221;2\/3&#8243;][vc_column_text]<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Biofilm_as_a_new_target\"><\/span>Biofilm as a new target<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>[\/vc_column_text][tm_spacer size=&#8221;lg:10&#8243;][vc_column_text]In recent years, scientific research has begun to consider <a href=\"https:\/\/www.future-live.com\/en\/biofilm-and-proteolytic-enzymes-a-targeted-approach-to-persistent-infections\/\">biofilm as an actual therapeutic target<\/a>.<\/p>\n<p>Addressing the biofilm means intervening in the structure that protects the bacteria, making them more vulnerable and reducing the risk of recurrence.<\/p>\n<p>This change in perspective has paved the way for new approaches, designed to complement traditional therapies in cases where biofilm plays a key role.[\/vc_column_text][tm_spacer size=&#8221;lg:30&#8243;][tm_spacer size=&#8221;lg:30&#8243;][\/vc_column][vc_column width=&#8221;1\/6&#8243;][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"[vc_row][vc_column width=&#8221;1\/6&#8243;][\/vc_column][vc_column width=&#8221;2\/3&#8243;][vc_column_text]When an infection seems to resolve only temporarily and tends to recur over time, the cause is often not an incorrect therapy, but a little-known biological mechanism: biofilm. Biofilm represents one of the primary survival strategies of bacteria and explains why many infections become persistent or recurrent, despite correct treatments. Understanding what biofilm is is a fundamental step in comprehending why some infections are so difficult to eliminate definitively.[\/vc_column_text][tm_spacer size=&#8221;lg:30&#8243;][\/vc_column][vc_column width=&#8221;1\/6&#8243;][\/vc_column][\/vc_row][vc_row][vc_column width=&#8221;1\/6&#8243;][\/vc_column][vc_column width=&#8221;2\/3&#8243;][vc_column_text] What is bacterial biofilm [\/vc_column_text][tm_spacer size=&#8221;lg:10&#8243;][vc_column_text]Biofilm is a protective structure produced by bacteria. It does not consist of isolated bacteria, but of microorganisms embedded within an extracellular matrix that they themselves secrete. This matrix is mainly composed of: polysaccharides proteins DNA fragments a large amount of water The result is a sort of viscous film that envelops the bacteria and protects them from the external environment.[\/vc_column_text][tm_spacer size=&#8221;lg:30&#8243;][vc_column_text] Why bacteria produce biofilm [\/vc_column_text][tm_spacer size=&#8221;lg:10&#8243;][vc_column_text]In unfavorable conditions, such as the presence of antibiotics, the immune system response, or environmental stress, some bacteria activate biofilm production to protect themselves. Within the biofilm, bacteria: are less exposed to external agents slow down their metabolism increase their probability of survival This behavior does not make the infection more aggressive, but it makes it more difficult to eliminate.[\/vc_column_text][tm_spacer size=&#8221;lg:30&#8243;][\/vc_column][vc_column width=&#8221;1\/6&#8243;][\/vc_column][\/vc_row][vc_row][vc_column width=&#8221;1\/6&#8243;][\/vc_column][vc_column width=&#8221;2\/3&#8243;][vc_column_text] Biofilm and resistance to treatments [\/vc_column_text][tm_spacer size=&#8221;lg:10&#8243;][vc_column_text]One of the most critical aspects of biofilm is its ability to hinder the action of traditional treatments. Biofilm functions as a physical barrier that reduces the effectiveness of the immune response and slows down the penetration of antibiotics, protecting bacteria even when therapy is correct. Furthermore, within the biofilm, bacterial cells can be present in a state of quiescence, showing low sensitivity to drugs that act on active microorganisms.[\/vc_column_text][tm_spacer size=&#8221;lg:20&#8243;][vc_column_text]To learn more, read the article Antibiotic resistance: why some infections don&#8217;t truly heal.[\/vc_column_text][tm_spacer size=&#8221;lg:40&#8243;][vc_column_text] Why biofilm favors recurrence [\/vc_column_text][tm_spacer size=&#8221;lg:10&#8243;][vc_column_text]When a therapy reduces free bacteria, symptoms may improve. However, if the biofilm remains intact, a portion of the microorganisms can survive. Over time, these bacteria can reactivate and cause a new manifestation of the infection. This mechanism is at the base of many chronic and recurrent infections and is one of the reasons why some people experience repeated episodes of the same disorder.[\/vc_column_text][tm_spacer size=&#8221;lg:30&#8243;][vc_column_text] Escherichia coli biofilm: why urinary tract infections return Candida biofilm: why candidiasis tends to recur [\/vc_column_text][tm_spacer size=&#8221;lg:30&#8243;][\/vc_column][vc_column width=&#8221;1\/6&#8243;][\/vc_column][\/vc_row][vc_row][vc_column width=&#8221;1\/6&#8243;][\/vc_column][vc_column width=&#8221;2\/3&#8243;][vc_column_text] Biofilm as a new target [\/vc_column_text][tm_spacer size=&#8221;lg:10&#8243;][vc_column_text]In recent years, scientific research has begun to consider biofilm as an actual therapeutic target. Addressing the biofilm means intervening in the structure that protects the bacteria, making them more vulnerable and reducing the risk of recurrence. This change in perspective has paved the way for new approaches, designed to complement traditional therapies in cases where biofilm plays a key role.[\/vc_column_text][tm_spacer size=&#8221;lg:30&#8243;][tm_spacer size=&#8221;lg:30&#8243;][\/vc_column][vc_column width=&#8221;1\/6&#8243;][\/vc_column][\/vc_row]","protected":false},"author":178,"featured_media":14951,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[156,165,162,151],"tags":[173],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Bacterial biofilm: how bacteria defend themselves against antibiotics - Future Live Srl<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.future-live.com\/en\/bacterial-biofilm-how-bacteria-defend-themselves-against-antibiotics\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bacterial biofilm: how bacteria defend themselves against antibiotics - Future Live Srl\" \/>\n<meta property=\"og:description\" content=\"[vc_row][vc_column width=&#8221;1\/6&#8243;][\/vc_column][vc_column width=&#8221;2\/3&#8243;][vc_column_text]When an infection seems to resolve only temporarily and tends to recur over time, the cause is often not an incorrect therapy, but a little-known biological mechanism: biofilm. Biofilm represents one of the primary survival strategies of bacteria and explains why many infections become persistent or recurrent, despite correct treatments. Understanding what biofilm is is a fundamental step in comprehending why some infections are so difficult to eliminate definitively.[\/vc_column_text][tm_spacer size=&#8221;lg:30&#8243;][\/vc_column][vc_column width=&#8221;1\/6&#8243;][\/vc_column][\/vc_row][vc_row][vc_column width=&#8221;1\/6&#8243;][\/vc_column][vc_column width=&#8221;2\/3&#8243;][vc_column_text] What is bacterial biofilm [\/vc_column_text][tm_spacer size=&#8221;lg:10&#8243;][vc_column_text]Biofilm is a protective structure produced by bacteria. It does not consist of isolated bacteria, but of microorganisms embedded within an extracellular matrix that they themselves secrete. This matrix is mainly composed of: polysaccharides proteins DNA fragments a large amount of water The result is a sort of viscous film that envelops the bacteria and protects them from the external environment.[\/vc_column_text][tm_spacer size=&#8221;lg:30&#8243;][vc_column_text] Why bacteria produce biofilm [\/vc_column_text][tm_spacer size=&#8221;lg:10&#8243;][vc_column_text]In unfavorable conditions, such as the presence of antibiotics, the immune system response, or environmental stress, some bacteria activate biofilm production to protect themselves. Within the biofilm, bacteria: are less exposed to external agents slow down their metabolism increase their probability of survival This behavior does not make the infection more aggressive, but it makes it more difficult to eliminate.[\/vc_column_text][tm_spacer size=&#8221;lg:30&#8243;][\/vc_column][vc_column width=&#8221;1\/6&#8243;][\/vc_column][\/vc_row][vc_row][vc_column width=&#8221;1\/6&#8243;][\/vc_column][vc_column width=&#8221;2\/3&#8243;][vc_column_text] Biofilm and resistance to treatments [\/vc_column_text][tm_spacer size=&#8221;lg:10&#8243;][vc_column_text]One of the most critical aspects of biofilm is its ability to hinder the action of traditional treatments. Biofilm functions as a physical barrier that reduces the effectiveness of the immune response and slows down the penetration of antibiotics, protecting bacteria even when therapy is correct. Furthermore, within the biofilm, bacterial cells can be present in a state of quiescence, showing low sensitivity to drugs that act on active microorganisms.[\/vc_column_text][tm_spacer size=&#8221;lg:20&#8243;][vc_column_text]To learn more, read the article Antibiotic resistance: why some infections don&#8217;t truly heal.[\/vc_column_text][tm_spacer size=&#8221;lg:40&#8243;][vc_column_text] Why biofilm favors recurrence [\/vc_column_text][tm_spacer size=&#8221;lg:10&#8243;][vc_column_text]When a therapy reduces free bacteria, symptoms may improve. However, if the biofilm remains intact, a portion of the microorganisms can survive. Over time, these bacteria can reactivate and cause a new manifestation of the infection. This mechanism is at the base of many chronic and recurrent infections and is one of the reasons why some people experience repeated episodes of the same disorder.[\/vc_column_text][tm_spacer size=&#8221;lg:30&#8243;][vc_column_text] Escherichia coli biofilm: why urinary tract infections return Candida biofilm: why candidiasis tends to recur [\/vc_column_text][tm_spacer size=&#8221;lg:30&#8243;][\/vc_column][vc_column width=&#8221;1\/6&#8243;][\/vc_column][\/vc_row][vc_row][vc_column width=&#8221;1\/6&#8243;][\/vc_column][vc_column width=&#8221;2\/3&#8243;][vc_column_text] Biofilm as a new target [\/vc_column_text][tm_spacer size=&#8221;lg:10&#8243;][vc_column_text]In recent years, scientific research has begun to consider biofilm as an actual therapeutic target. Addressing the biofilm means intervening in the structure that protects the bacteria, making them more vulnerable and reducing the risk of recurrence. This change in perspective has paved the way for new approaches, designed to complement traditional therapies in cases where biofilm plays a key role.[\/vc_column_text][tm_spacer size=&#8221;lg:30&#8243;][tm_spacer size=&#8221;lg:30&#8243;][\/vc_column][vc_column width=&#8221;1\/6&#8243;][\/vc_column][\/vc_row]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.future-live.com\/en\/bacterial-biofilm-how-bacteria-defend-themselves-against-antibiotics\/\" \/>\n<meta property=\"og:site_name\" content=\"Future Live Srl\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/FutureLivesrl\/\" \/>\n<meta property=\"article:published_time\" content=\"2026-03-13T13:38:35+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-13T20:42:22+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.future-live.com\/wp-content\/uploads\/2018\/05\/biofilm-batterico-scaled.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"1435\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Marta Librino\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Marta Librino\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.future-live.com\/en\/bacterial-biofilm-how-bacteria-defend-themselves-against-antibiotics\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.future-live.com\/en\/bacterial-biofilm-how-bacteria-defend-themselves-against-antibiotics\/\"},\"author\":{\"name\":\"Marta Librino\",\"@id\":\"https:\/\/www.future-live.com\/#\/schema\/person\/d8d117efcfc6064747bddb020d03fc4b\"},\"headline\":\"Bacterial biofilm: how bacteria defend themselves against antibiotics\",\"datePublished\":\"2026-03-13T13:38:35+00:00\",\"dateModified\":\"2026-03-13T20:42:22+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.future-live.com\/en\/bacterial-biofilm-how-bacteria-defend-themselves-against-antibiotics\/\"},\"wordCount\":655,\"publisher\":{\"@id\":\"https:\/\/www.future-live.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.future-live.com\/en\/bacterial-biofilm-how-bacteria-defend-themselves-against-antibiotics\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.future-live.com\/wp-content\/uploads\/2018\/05\/biofilm-batterico-scaled.jpeg\",\"keywords\":[\"enflog\"],\"articleSection\":[\"Gynecology\",\"nephrology\",\"Thematic areas\",\"Urology\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.future-live.com\/en\/bacterial-biofilm-how-bacteria-defend-themselves-against-antibiotics\/\",\"url\":\"https:\/\/www.future-live.com\/en\/bacterial-biofilm-how-bacteria-defend-themselves-against-antibiotics\/\",\"name\":\"Bacterial biofilm: how bacteria defend themselves against antibiotics - 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Future Live Srl","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.future-live.com\/en\/bacterial-biofilm-how-bacteria-defend-themselves-against-antibiotics\/","og_locale":"en_US","og_type":"article","og_title":"Bacterial biofilm: how bacteria defend themselves against antibiotics - Future Live Srl","og_description":"[vc_row][vc_column width=&#8221;1\/6&#8243;][\/vc_column][vc_column width=&#8221;2\/3&#8243;][vc_column_text]When an infection seems to resolve only temporarily and tends to recur over time, the cause is often not an incorrect therapy, but a little-known biological mechanism: biofilm. Biofilm represents one of the primary survival strategies of bacteria and explains why many infections become persistent or recurrent, despite correct treatments. Understanding what biofilm is is a fundamental step in comprehending why some infections are so difficult to eliminate definitively.[\/vc_column_text][tm_spacer size=&#8221;lg:30&#8243;][\/vc_column][vc_column width=&#8221;1\/6&#8243;][\/vc_column][\/vc_row][vc_row][vc_column width=&#8221;1\/6&#8243;][\/vc_column][vc_column width=&#8221;2\/3&#8243;][vc_column_text] What is bacterial biofilm [\/vc_column_text][tm_spacer size=&#8221;lg:10&#8243;][vc_column_text]Biofilm is a protective structure produced by bacteria. It does not consist of isolated bacteria, but of microorganisms embedded within an extracellular matrix that they themselves secrete. This matrix is mainly composed of: polysaccharides proteins DNA fragments a large amount of water The result is a sort of viscous film that envelops the bacteria and protects them from the external environment.[\/vc_column_text][tm_spacer size=&#8221;lg:30&#8243;][vc_column_text] Why bacteria produce biofilm [\/vc_column_text][tm_spacer size=&#8221;lg:10&#8243;][vc_column_text]In unfavorable conditions, such as the presence of antibiotics, the immune system response, or environmental stress, some bacteria activate biofilm production to protect themselves. Within the biofilm, bacteria: are less exposed to external agents slow down their metabolism increase their probability of survival This behavior does not make the infection more aggressive, but it makes it more difficult to eliminate.[\/vc_column_text][tm_spacer size=&#8221;lg:30&#8243;][\/vc_column][vc_column width=&#8221;1\/6&#8243;][\/vc_column][\/vc_row][vc_row][vc_column width=&#8221;1\/6&#8243;][\/vc_column][vc_column width=&#8221;2\/3&#8243;][vc_column_text] Biofilm and resistance to treatments [\/vc_column_text][tm_spacer size=&#8221;lg:10&#8243;][vc_column_text]One of the most critical aspects of biofilm is its ability to hinder the action of traditional treatments. Biofilm functions as a physical barrier that reduces the effectiveness of the immune response and slows down the penetration of antibiotics, protecting bacteria even when therapy is correct. Furthermore, within the biofilm, bacterial cells can be present in a state of quiescence, showing low sensitivity to drugs that act on active microorganisms.[\/vc_column_text][tm_spacer size=&#8221;lg:20&#8243;][vc_column_text]To learn more, read the article Antibiotic resistance: why some infections don&#8217;t truly heal.[\/vc_column_text][tm_spacer size=&#8221;lg:40&#8243;][vc_column_text] Why biofilm favors recurrence [\/vc_column_text][tm_spacer size=&#8221;lg:10&#8243;][vc_column_text]When a therapy reduces free bacteria, symptoms may improve. However, if the biofilm remains intact, a portion of the microorganisms can survive. Over time, these bacteria can reactivate and cause a new manifestation of the infection. This mechanism is at the base of many chronic and recurrent infections and is one of the reasons why some people experience repeated episodes of the same disorder.[\/vc_column_text][tm_spacer size=&#8221;lg:30&#8243;][vc_column_text] Escherichia coli biofilm: why urinary tract infections return Candida biofilm: why candidiasis tends to recur [\/vc_column_text][tm_spacer size=&#8221;lg:30&#8243;][\/vc_column][vc_column width=&#8221;1\/6&#8243;][\/vc_column][\/vc_row][vc_row][vc_column width=&#8221;1\/6&#8243;][\/vc_column][vc_column width=&#8221;2\/3&#8243;][vc_column_text] Biofilm as a new target [\/vc_column_text][tm_spacer size=&#8221;lg:10&#8243;][vc_column_text]In recent years, scientific research has begun to consider biofilm as an actual therapeutic target. Addressing the biofilm means intervening in the structure that protects the bacteria, making them more vulnerable and reducing the risk of recurrence. This change in perspective has paved the way for new approaches, designed to complement traditional therapies in cases where biofilm plays a key role.[\/vc_column_text][tm_spacer size=&#8221;lg:30&#8243;][tm_spacer size=&#8221;lg:30&#8243;][\/vc_column][vc_column width=&#8221;1\/6&#8243;][\/vc_column][\/vc_row]","og_url":"https:\/\/www.future-live.com\/en\/bacterial-biofilm-how-bacteria-defend-themselves-against-antibiotics\/","og_site_name":"Future Live Srl","article_publisher":"https:\/\/www.facebook.com\/FutureLivesrl\/","article_published_time":"2026-03-13T13:38:35+00:00","article_modified_time":"2026-03-13T20:42:22+00:00","og_image":[{"width":2560,"height":1435,"url":"https:\/\/www.future-live.com\/wp-content\/uploads\/2018\/05\/biofilm-batterico-scaled.jpeg","type":"image\/jpeg"}],"author":"Marta Librino","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Marta Librino","Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.future-live.com\/en\/bacterial-biofilm-how-bacteria-defend-themselves-against-antibiotics\/#article","isPartOf":{"@id":"https:\/\/www.future-live.com\/en\/bacterial-biofilm-how-bacteria-defend-themselves-against-antibiotics\/"},"author":{"name":"Marta Librino","@id":"https:\/\/www.future-live.com\/#\/schema\/person\/d8d117efcfc6064747bddb020d03fc4b"},"headline":"Bacterial biofilm: how bacteria defend themselves against antibiotics","datePublished":"2026-03-13T13:38:35+00:00","dateModified":"2026-03-13T20:42:22+00:00","mainEntityOfPage":{"@id":"https:\/\/www.future-live.com\/en\/bacterial-biofilm-how-bacteria-defend-themselves-against-antibiotics\/"},"wordCount":655,"publisher":{"@id":"https:\/\/www.future-live.com\/#organization"},"image":{"@id":"https:\/\/www.future-live.com\/en\/bacterial-biofilm-how-bacteria-defend-themselves-against-antibiotics\/#primaryimage"},"thumbnailUrl":"https:\/\/www.future-live.com\/wp-content\/uploads\/2018\/05\/biofilm-batterico-scaled.jpeg","keywords":["enflog"],"articleSection":["Gynecology","nephrology","Thematic areas","Urology"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/www.future-live.com\/en\/bacterial-biofilm-how-bacteria-defend-themselves-against-antibiotics\/","url":"https:\/\/www.future-live.com\/en\/bacterial-biofilm-how-bacteria-defend-themselves-against-antibiotics\/","name":"Bacterial biofilm: how bacteria defend themselves against antibiotics - 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