{"id":28880,"date":"2024-12-21T08:05:11","date_gmt":"2024-12-21T02:35:11","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=28880"},"modified":"2025-04-08T22:49:45","modified_gmt":"2025-04-08T17:19:45","slug":"nanoplastics-and-antibiotic-resistance","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/nanoplastics-and-antibiotic-resistance\/","title":{"rendered":"Nanoplastics and Antibiotic Resistance"},"content":{"rendered":"<h2><strong>Understanding Antibiotic Resistance (AR)<\/strong><\/h2>\n<ul>\n<li><strong>Definition<\/strong>: AR is a type of <strong>antimicrobial resistance<\/strong> where bacteria evolve to withstand the effects of antibiotics, making infections harder to treat.<\/li>\n<li><strong>Mechanism<\/strong>: It occurs primarily due to genetic changes that allow bacteria to neutralize or evade drugs designed to kill them.<\/li>\n<\/ul>\n<p><strong>Key Findings of the Study<\/strong><\/p>\n<ul>\n<li><strong>Impact on Gut Microbiome<\/strong>: <strong>Nanoplastics<\/strong> can transform <strong>Lactobacillus acidophilus<\/strong>, a beneficial gut microbiota, into a <strong>carrier of AR genes<\/strong>.\n<ul>\n<li>These AR genes can be transferred to <strong>pathogenic bacteria<\/strong>, exacerbating the AR crisis.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Horizontal Gene Transfer (HGT)<\/strong>:\n<ul>\n<li><strong>Polyethylene terephthalate bottle-derived nanoplastics (PBNPs)<\/strong> facilitate the transfer of AR genes from <strong>E. coli<\/strong> to <strong>Lactobacillus acidophilus<\/strong> via HGT.<\/li>\n<li><strong>HGT<\/strong> involves gene transfer across different bacterial species, unlike <strong>vertical gene transfer<\/strong>, which occurs from parent to offspring.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Mechanisms of AR Gene Transfer<\/strong>:\n<ul>\n<li><strong>Direct Transformation Pathway<\/strong>: PBNPs act as <strong>physical carriers<\/strong>, transporting AR plasmids across bacterial membranes. This facilitates <strong>direct gene transfer<\/strong> between bacteria.<\/li>\n<li><strong>OMV-Induced Transfer Pathway<\/strong>: PBNPs induce <strong>oxidative stress<\/strong>, triggering an increased secretion of <strong>outer membrane vesicles (OMVs)<\/strong>. These OMVs, loaded with AR genes, serve as potent vectors for gene transfer between bacterial species, including beneficial and pathogenic bacteria.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><strong>What Are Nanoplastics?<\/strong><\/p>\n<ul>\n<li><strong>Definition<\/strong>: Nanoplastics are solid particles of synthetic or heavily modified natural polymers, ranging in size from <strong>1 nm to 1000 nm<\/strong>.<\/li>\n<li><strong>Types<\/strong>:\n<ul>\n<li><strong>Primary Nanoplastics<\/strong>: Intentionally produced for specific applications.<\/li>\n<li><strong>Secondary Nanoplastics<\/strong>: Generated from the fragmentation of larger plastics, often released unintentionally into the environment.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h3>Q1: What are nanoparticles, and why are they important?<\/h3>\n<p>Nanoparticles are ultra-small particles with dimensions typically between 1 and 100 nanometers. Due to their tiny size and high surface area-to-volume ratio, they exhibit unique physical, chemical, and biological properties, making them valuable in diverse fields like medicine, electronics, environmental science, and materials engineering.<\/p>\n<p><strong>News: <\/strong><a href=\"https:\/\/pib.gov.in\/PressReleasePage.aspx?PRID=2086071#:~:text=Nanoplastics%20derived%20from%20single%2Duse,antibiotic%20resistance%20are%20growing%20concerns\" target=\"_blank\" rel=\"nofollow noopener\">Nano-plastics identified as emerging agents in spread of antibiotic resistance<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nanoplastics are solid particles of synthetic or heavily modified natural polymers, ranging in size from 1 nm to 1000 nm.<\/p>\n","protected":false},"author":5,"featured_media":28881,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-28880","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-prelims-current-affairs","8":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/28880","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=28880"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/28880\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/28881"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=28880"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=28880"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=28880"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}