{"id":1917,"date":"2020-08-19T13:30:16","date_gmt":"2020-08-19T13:30:16","guid":{"rendered":"https:\/\/meddists.com\/learn\/pre-clinical\/biochemistry\/biochemistry-of-the-metabolism\/amino-acid-metabolism\/exogenous-protein-sources-nitrogen-balance\/"},"modified":"2021-12-07T20:46:09","modified_gmt":"2021-12-07T18:46:09","slug":"exogenous-protein-sources-nitrogen-balance","status":"publish","type":"page","link":"https:\/\/meddists.com\/learn\/pre-clinical\/biochemistry\/biochemistry-of-the-metabolism\/amino-acid-metabolism\/exogenous-protein-sources-nitrogen-balance\/","title":{"rendered":"Exogenous Protein Sources: Nitrogen Balance"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><div class=\"intro\">Nitrogen balance is the balance between nitrogen uptake (mostly proteins) and excretion (urea, ammonia).<\/div><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It is described by the calculation:<\/p>\n\n\n\n<p class=\"has-text-align-center has-light-green-cyan-background-color has-background wp-block-paragraph\">Nitrogen Balance = Nitrogen intake (<strong>in)<\/strong> \u2013 Nitrogen loss (<strong>out<\/strong>)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A normal adult is in a&nbsp;<strong>neutral<\/strong>&nbsp;nitrogen balance (typically zero).<\/p>\n\n\n<span class=\"block-heading\" id=\"header_1\">\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" class=\"title_collection title1\">Positive nitrogen balance<\/h2>\n<\/span><span class=\"block-content\" id=\"contents_1\">\n\n\n<p class=\"wp-block-paragraph\">The nitrogen balance is&nbsp;<strong>positive<\/strong>&nbsp;whenever proteins are uptaken from an external source and increase the pool of nitrogen:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Growth<\/strong><\/li><li><strong>Pregnancy<\/strong><\/li><li><strong>Lactation<\/strong><\/li><li><strong>Recovery from metabolic stress<\/strong>\/diseases (you have to reproduce all the lost proteins and enzymes)<\/li><\/ul>\n\n\n<\/span><span class=\"block-heading\" id=\"header_2\">\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" class=\"title_collection title1\">Negative nitrogen balance<\/h2>\n<\/span><span class=\"block-content\" id=\"contents_2\">\n\n\n<p class=\"wp-block-paragraph\">The nitrogen balance is&nbsp;<strong>negative<\/strong>&nbsp;whenever nitrogen is being lost due to inadequate protein intake and an increase in demand:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Metabolic stress<\/strong><\/li><li><strong>Long-term starvation<\/strong><\/li><li><strong>Long-term lack of essential amino acids<\/strong><\/li><\/ul>\n\n\n<\/span><span class=\"block-heading\" id=\"header_3\">\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" class=\"title_collection title1\">References<\/h2>\n<\/span><span class=\"block-content\" id=\"contents_3\">\n\n\n<p class=\"wp-block-paragraph\">S<span style=\"font-size: revert; color: initial;\">nider MDS. Devlin\u2019s <strong>Textbook of Biochemistry with Clinical Correlations<\/strong>, the 8th Edition. John Wiley &amp; Sons, Incorporated, 2020; 2019.<\/span>  <\/p>\n<\/span><div id=\"the_titles\" style=\"display:none;\"><h2 class=\"wp-block-heading\" class=\"wp-block-heading\">Positive nitrogen balance<\/h2><h2 class=\"wp-block-heading\" class=\"wp-block-heading\">Negative nitrogen balance<\/h2><h2 class=\"wp-block-heading\" class=\"wp-block-heading\">References<\/h2><\/div>","protected":false},"excerpt":{"rendered":"<p>It is described by the calculation: Nitrogen Balance = Nitrogen intake (in) \u2013 Nitrogen loss (out) A normal adult is in a&nbsp;neutral&nbsp;nitrogen balance (typically zero). Positive nitrogen balance The nitrogen balance is&nbsp;positive&nbsp;whenever proteins are uptaken from an external source and increase the pool of nitrogen: Growth Pregnancy Lactation Recovery from metabolic stress\/diseases (you have to [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1714,"menu_order":4,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1917","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Exogenous Protein Sources: Nitrogen Balance &#8211; Meddists<\/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:\/\/meddists.com\/learn\/pre-clinical\/biochemistry\/biochemistry-of-the-metabolism\/amino-acid-metabolism\/exogenous-protein-sources-nitrogen-balance\/\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/meddists.com\\\/learn\\\/pre-clinical\\\/biochemistry\\\/biochemistry-of-the-metabolism\\\/amino-acid-metabolism\\\/exogenous-protein-sources-nitrogen-balance\\\/\",\"url\":\"https:\\\/\\\/meddists.com\\\/learn\\\/pre-clinical\\\/biochemistry\\\/biochemistry-of-the-metabolism\\\/amino-acid-metabolism\\\/exogenous-protein-sources-nitrogen-balance\\\/\",\"name\":\"Exogenous Protein Sources: Nitrogen Balance &#8211; 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