{"id":103,"date":"2010-12-21T16:13:00","date_gmt":"2010-12-21T16:13:00","guid":{"rendered":"http:\/\/lucasgferreira.wordpress.com\/2010\/12\/21\/a-desaminacao-do-amp-atrasa-a-acidificacao-no-musculo-esqueletico-durante-o-exercicio-de-alta-intensidade"},"modified":"2010-12-21T16:13:00","modified_gmt":"2010-12-21T16:13:00","slug":"a-desaminacao-do-amp-atrasa-a-acidificacao-no-musculo-esqueletico-durante-o-exercicio-de-alta-intensidade","status":"publish","type":"post","link":"https:\/\/blog.ufes.br\/lucasgf\/?p=103","title":{"rendered":"A desamina\u00e7\u00e3o do AMP atrasa a acidifica\u00e7\u00e3o no m\u00fasculo esquel\u00e9tico durante o exerc\u00edcio de alta intensidade."},"content":{"rendered":"<div class=\"citation\" style=\"font-family:arial, helvetica, sans-serif;line-height:1.45em;text-align:justify;margin:.5em 0\"><span class=\"Apple-style-span\" style=\"font-weight:bold;line-height:24px\">AMP deamination delays muscle acidification during heavy exercise and hypoxia.<\/span><\/div>\n<div class=\"auth_list\" style=\"font-family:arial, helvetica, sans-serif;font-size:12px;line-height:18px;text-align:justify;margin:.5em 0\"><span class=\"Apple-style-span\" style=\"font-size:15px;line-height:21px\"><a href=\"http:\/\/www.ncbi.nlm.nih.gov\/sites\/entrez\" title=\"The Journal of biological chemistry.\">J Biol Chem.<\/a>&nbsp;2006 Feb 10;281(6):3057-66.<\/span><\/div>\n<div class=\"auth_list\" style=\"font-family:arial, helvetica, sans-serif;font-size:12px;line-height:18px;text-align:justify;margin:.5em 0\"><a href=\"http:\/\/www.ncbi.nlm.nih.gov\/pubmed?term=%22Korzeniewski%20B%22%5BAuthor%5D\">Korzeniewski B<\/a>.<\/div>\n<div class=\"aff\" style=\"font-family:arial, helvetica, sans-serif;line-height:1.0915em;text-align:justify;margin:.5em 0\"><span class=\"Apple-style-span\" style=\"font-size:x-small\">Faculty of Biotechnology, Jagiellonian University, 30-387 Krak\u00f3w, Poland. benio@mol.uj.edu.pl<\/span><\/div>\n<div class=\"aff\" style=\"font-family:arial, helvetica, sans-serif;font-size:.91666em;line-height:1.0915em;text-align:justify;margin:.5em 0\"><\/div>\n<div class=\"aff\" style=\"font-family:arial, helvetica, sans-serif;font-size:.91666em;line-height:1.0915em;text-align:justify;margin:.5em 0\">Korzeniewski, em 2006, publicou este trabalho que demonstrou, atrav\u00e9s de uma abordagem <i>in silico<\/i>&nbsp;(atrav\u00e9s de simula\u00e7\u00e3o computacional), que a atividade da AMP desaminase \u00e9 importante durante atividade intensa. Esta enzima promove outra fonte de regenera\u00e7\u00e3o do ATP, apesar de causar a diminui\u00e7\u00e3o da reserva de adenina nucleot\u00eddeos da c\u00e9lula muscular, uma vez que o AMP \u00e9 desaminado a IMP que deixa a c\u00e9lula.<\/div>\n<div class=\"aff\" style=\"font-family:arial, helvetica, sans-serif;font-size:.91666em;line-height:1.0915em;text-align:justify;margin:.5em 0\"><\/div>\n<div class=\"aff\" style=\"font-family:arial, helvetica, sans-serif;font-size:.91666em;line-height:1.0915em;text-align:justify;margin:.5em 0\">Apesar deste efeito aparentemente delet\u00e9rio, o aumento da atividade da AMP desaminase promove uma menor depend\u00eancia da glic\u00f3lise anaer\u00f3bica, enquanto que a fosforila\u00e7\u00e3o oxidativa n\u00e3o \u00e9 afetada. Na depend\u00eancia de fontes anaer\u00f3bicas h\u00e1 o ac\u00famulo de pr\u00f3tons H+ devido \u00e0 n\u00e3o utiliza\u00e7\u00e3o destes na gera\u00e7\u00e3o de ATP por via mitocondrial. Assim, a AMP desaminase mostra-se importante para o retardamento da fadiga durante esfor\u00e7os intensos, apesar da diminui\u00e7\u00e3o do <i>pool<\/i>&nbsp;de adenina nucleot\u00eddeos.<\/div>\n<div class=\"aff\" style=\"font-family:arial, helvetica, sans-serif;font-size:.91666em;line-height:1.0915em;text-align:justify;margin:.5em 0\"><\/div>\n<div class=\"aff\" style=\"font-family:arial, helvetica, sans-serif;font-size:.91666em;line-height:1.0915em;text-align:justify;margin:.5em 0\">A figura seguir demonstra a gera\u00e7\u00e3o de ATP por diferentes vias (creatina quinase, glic\u00f3lise anaer\u00f3bica, fosforila\u00e7\u00e3o oxidativa e adenilato quinase). Quando o AMP \u00e9 gera\u00e7\u00e3o a partir da a\u00e7\u00e3o da adenilato quinase, \u00e9 posteriormente desanimado pela AMP desaminase, gerando IMP que deixa a c\u00e9lula.<\/div>\n<div class=\"aff\" style=\"font-family:arial, helvetica, sans-serif;font-size:.91666em;line-height:1.0915em;text-align:justify;margin:.5em 0\"><\/div>\n<div class=\"aff\" style=\"font-family:arial, helvetica, sans-serif;font-size:.91666em;line-height:1.0915em;text-align:center;margin:.5em 0\"><img decoding=\"async\" alt=\"FIGURE 1.\" src=\"http:\/\/www.jbc.org\/content\/281\/6\/3057\/F1.medium.gif\" \/><\/div>\n<div class=\"aff\" style=\"line-height:1.0915em;text-align:justify;margin:.5em 0\"><span class=\"Apple-style-span\" style=\"font-family:Arial, Helvetica, sans-serif;font-size:x-small\">Vias de regenera\u00e7\u00e3o do ATP a partir do ADP. AG: Glic\u00f3lise Anaer\u00f3bica, OP: Fosforila\u00e7\u00e3o Oxidativa,&nbsp;CK: Creatina Quinase.<\/span><\/div>\n<div class=\"aff\" style=\"font-family:arial, helvetica, sans-serif;font-size:.91666em;line-height:1.0915em;text-align:justify;margin:.5em 0\"><\/div>\n<div class=\"aff\" style=\"font-family:arial, helvetica, sans-serif;font-size:.91666em;line-height:1.0915em;text-align:justify;margin:.5em 0\">As tabela a seguir mostram o resultado da simula\u00e7\u00e3o computacional, baseado na cin\u00e9tica das vias envolvidas, demonstrando o efeito de diferentes intensidade de a\u00e7\u00e3o da AMP desaminase durante exerc\u00edcio intenso. \u00c9 poss\u00edvel perceber que quando esta enzima est\u00e1 mais ativa, h\u00e1 uma diminui\u00e7\u00e3o do fluxo atrav\u00e9s da glic\u00f3lise anaer\u00f3bica e, consequentemente, uma menor queda do pH em resposta ao exerc\u00edcio intenso.<\/div>\n<div class=\"aff\" style=\"font-family:arial, helvetica, sans-serif;font-size:.91666em;line-height:1.0915em;text-align:justify;margin:.5em 0\"><\/div>\n<div class=\"aff\" style=\"text-align:justify;margin:.5em 0\"><span class=\"Apple-style-span\" style=\"color:#403838\"><\/span><\/div>\n<table class=\"table-expansion-content\" id=\"table-1\">\n<thead>\n<tr style=\"font-family:inherit;font-size:inherit;font-style:inherit;font-weight:inherit;line-height:inherit;text-align:inherit;vertical-align:baseline;border-color:initial;border-style:initial;border-width:0;margin:0;padding:0\">\n<th align=\"center\" colspan=\"1\" rowspan=\"1\" valign=\"top\">\n<hr \/>\n<p><strong>Conditions<\/strong><\/p>\n<hr \/>\n<\/th>\n<th align=\"center\" colspan=\"1\" rowspan=\"1\" valign=\"top\">\n<hr \/>\n<p><strong>pH<\/strong><\/p>\n<hr \/>\n<\/th>\n<th align=\"center\" colspan=\"1\" rowspan=\"1\" valign=\"top\">\n<hr \/>\n<p><strong>ATP\/ADP<\/strong><\/p>\n<hr \/>\n<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"font-family:inherit;font-size:inherit;font-style:inherit;font-weight:inherit;line-height:inherit;text-align:inherit;vertical-align:baseline;border-color:initial;border-style:initial;border-width:0;margin:0;padding:0\">\n<td align=\"left\" colspan=\"1\" rowspan=\"1\" valign=\"top\"><strong>Normoxia<\/strong><\/td>\n<td align=\"center\" colspan=\"1\" rowspan=\"1\" valign=\"top\"><\/td>\n<td align=\"right\" colspan=\"1\" rowspan=\"1\" valign=\"top\"><\/td>\n<\/tr>\n<tr style=\"font-family:inherit;font-size:inherit;font-style:inherit;font-weight:inherit;line-height:inherit;text-align:inherit;vertical-align:baseline;border-color:initial;border-style:initial;border-width:0;margin:0;padding:0\">\n<td align=\"left\" colspan=\"1\" rowspan=\"1\" valign=\"top\">&nbsp;&nbsp;&nbsp;&nbsp;No AMP deamination&nbsp;<span class=\"Apple-style-span\" style=\"line-height:17px\">(<a class=\"xref-\" href=\"http:\/\/www.jbc.org\/content\/281\/6\/3057\/T2.expansion.html#F2\" id=\"xref-fig-2-5\">Fig. 2<\/a>)<\/span>&nbsp;<\/td>\n<td align=\"center\" colspan=\"1\" rowspan=\"1\" valign=\"top\">6.46<\/td>\n<td align=\"right\" colspan=\"1\" rowspan=\"1\" valign=\"top\">131<\/td>\n<\/tr>\n<tr style=\"font-family:inherit;font-size:inherit;font-style:inherit;font-weight:inherit;line-height:inherit;text-align:inherit;vertical-align:baseline;border-color:initial;border-style:initial;border-width:0;margin:0;padding:0\">\n<td align=\"left\" colspan=\"1\" rowspan=\"1\" valign=\"top\">&nbsp;&nbsp;&nbsp;&nbsp;Low AMP deamination&nbsp;<span class=\"Apple-style-span\" style=\"line-height:17px\">(<a class=\"xref-\" href=\"http:\/\/www.jbc.org\/content\/281\/6\/3057\/T2.expansion.html#F3\" id=\"xref-fig-3-5\">Fig. 3<\/a>)<\/span><\/td>\n<td align=\"center\" colspan=\"1\" rowspan=\"1\" valign=\"top\">6.52<\/td>\n<td align=\"right\" colspan=\"1\" rowspan=\"1\" valign=\"top\">118<\/td>\n<\/tr>\n<tr style=\"font-family:inherit;font-size:inherit;font-style:inherit;font-weight:inherit;line-height:inherit;text-align:inherit;vertical-align:baseline;border-color:initial;border-style:initial;border-width:0;margin:0;padding:0\">\n<td align=\"left\" colspan=\"1\" rowspan=\"1\" valign=\"top\">&nbsp;&nbsp;&nbsp;&nbsp;High AMP deamination&nbsp;<span class=\"Apple-style-span\" style=\"line-height:17px\">(<a class=\"xref-\" href=\"http:\/\/www.jbc.org\/content\/281\/6\/3057\/T2.expansion.html#F4\" id=\"xref-fig-4-5\">Fig. 4<\/a>)<\/span><\/p>\n<hr \/>\n<\/td>\n<td align=\"center\" colspan=\"1\" rowspan=\"1\" valign=\"top\">6.60<\/p>\n<hr \/>\n<\/td>\n<td align=\"right\" colspan=\"1\" rowspan=\"1\" valign=\"top\">96<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span class=\"Apple-style-span\" style=\"line-height:1.0915em\"><span class=\"Apple-style-span\" style=\"font-family:Arial, Helvetica, sans-serif;font-size:x-small\">Tabela 1: pH e rela\u00e7\u00e3o ATP\/ADP ap\u00f3s 4 min de exerc\u00edcio intenso, em norm\u00f3xia, para diferentes intensidades de desanima\u00e7\u00e3o do AMP.<\/span><\/span><br \/><span class=\"Apple-style-span\" style=\"font-family:'Lucida Sans Unicode', Arial, 'Lucida Grande', Tahoma, Verdana, Helvetica, sans-serif;font-size:12px;line-height:19px\"><b><br \/><\/b><\/span><\/p>\n<div class=\"aff\" style=\"line-height:1.0915em;text-align:justify;margin:.5em 0\"><span class=\"Apple-style-span\" style=\"color:#403838\"><\/span><\/div>\n<table class=\"table-expansion-content\" id=\"table-2\">\n<thead>\n<tr style=\"font-family:inherit;font-size:inherit;font-style:inherit;font-weight:inherit;line-height:inherit;text-align:inherit;vertical-align:baseline;border-color:initial;border-style:initial;border-width:0;margin:0;padding:0\">\n<th align=\"center\" colspan=\"1\" rowspan=\"1\" valign=\"top\"><strong>Conditions<\/strong><\/p>\n<hr \/>\n<\/th>\n<th align=\"center\" colspan=\"1\" rowspan=\"1\" valign=\"top\">\n<hr \/>\n<p><strong>CK<\/strong><\/p>\n<hr \/>\n<\/th>\n<th align=\"center\" colspan=\"1\" rowspan=\"1\" valign=\"top\">\n<hr \/>\n<p><strong>OP<\/strong><\/p>\n<hr \/>\n<\/th>\n<th align=\"center\" colspan=\"1\" rowspan=\"1\" valign=\"top\">\n<hr \/>\n<p><strong>AG<\/strong><\/p>\n<hr \/>\n<\/th>\n<th align=\"center\" colspan=\"1\" rowspan=\"1\" valign=\"top\">\n<hr \/>\n<p><strong>AK + AMP-d<\/strong><\/p>\n<hr \/>\n<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"font-family:inherit;font-size:inherit;font-style:inherit;font-weight:inherit;line-height:inherit;text-align:inherit;vertical-align:baseline;border-color:initial;border-style:initial;border-width:0;margin:0;padding:0\">\n<td align=\"left\" colspan=\"1\" rowspan=\"1\" valign=\"top\"><strong>Normoxia<\/strong><\/td>\n<td align=\"center\" colspan=\"1\" rowspan=\"1\" valign=\"top\"><\/td>\n<td align=\"center\" colspan=\"1\" rowspan=\"1\" valign=\"top\"><\/td>\n<td align=\"center\" colspan=\"1\" rowspan=\"1\" valign=\"top\"><\/td>\n<td align=\"center\" colspan=\"1\" rowspan=\"1\" valign=\"top\"><\/td>\n<\/tr>\n<tr style=\"font-family:inherit;font-size:inherit;font-style:inherit;font-weight:inherit;line-height:inherit;text-align:inherit;vertical-align:baseline;border-color:initial;border-style:initial;border-width:0;margin:0;padding:0\">\n<td align=\"left\" colspan=\"1\" rowspan=\"1\" valign=\"top\">&nbsp;&nbsp;&nbsp;&nbsp;No AMP deamination (<a class=\"xref-\" href=\"http:\/\/www.jbc.org\/content\/281\/6\/3057\/T2.expansion.html#F2\" id=\"xref-fig-2-5\">Fig. 2<\/a>)<\/td>\n<td align=\"center\" colspan=\"1\" rowspan=\"1\" valign=\"top\">0.4<\/td>\n<td align=\"center\" colspan=\"1\" rowspan=\"1\" valign=\"top\">87.7<\/td>\n<td align=\"center\" colspan=\"1\" rowspan=\"1\" valign=\"top\">11.9<\/td>\n<td align=\"center\" colspan=\"1\" rowspan=\"1\" valign=\"top\">0<\/td>\n<\/tr>\n<tr style=\"font-family:inherit;font-size:inherit;font-style:inherit;font-weight:inherit;line-height:inherit;text-align:inherit;vertical-align:baseline;border-color:initial;border-style:initial;border-width:0;margin:0;padding:0\">\n<td align=\"left\" colspan=\"1\" rowspan=\"1\" valign=\"top\">&nbsp;&nbsp;&nbsp;&nbsp;Low AMP deamination (<a class=\"xref-\" href=\"http:\/\/www.jbc.org\/content\/281\/6\/3057\/T2.expansion.html#F3\" id=\"xref-fig-3-5\">Fig. 3<\/a>)<\/td>\n<td align=\"center\" colspan=\"1\" rowspan=\"1\" valign=\"top\">0.4<\/td>\n<td align=\"center\" colspan=\"1\" rowspan=\"1\" valign=\"top\">88.4<\/td>\n<td align=\"center\" colspan=\"1\" rowspan=\"1\" valign=\"top\">9.8<\/td>\n<td align=\"center\" colspan=\"1\" rowspan=\"1\" valign=\"top\">1.3<\/td>\n<\/tr>\n<tr style=\"font-family:inherit;font-size:inherit;font-style:inherit;font-weight:inherit;line-height:inherit;text-align:inherit;vertical-align:baseline;border-color:initial;border-style:initial;border-width:0;margin:0;padding:0\">\n<td align=\"left\" colspan=\"1\" rowspan=\"1\" valign=\"top\">&nbsp;&nbsp;&nbsp;&nbsp;High AMP deamination (<a class=\"xref-\" href=\"http:\/\/www.jbc.org\/content\/281\/6\/3057\/T2.expansion.html#F4\" id=\"xref-fig-4-5\">Fig. 4<\/a>)<\/p>\n<hr \/>\n<\/td>\n<td align=\"center\" colspan=\"1\" rowspan=\"1\" valign=\"top\">0.8<\/p>\n<hr \/>\n<\/td>\n<td align=\"center\" colspan=\"1\" rowspan=\"1\" valign=\"top\">89.3<\/p>\n<hr \/>\n<\/td>\n<td align=\"center\" colspan=\"1\" rowspan=\"1\" valign=\"top\">7.3<\/p>\n<hr \/>\n<\/td>\n<td align=\"center\" colspan=\"1\" rowspan=\"1\" valign=\"top\">2.6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span class=\"Apple-style-span\" style=\"font-family:Arial, Helvetica, sans-serif;font-size:x-small\">Tabela 2: Contribui\u00e7\u00e3o dos diferentes processos de consumo de ADP ap\u00f3s 4 min de exerc\u00edcio intenso em norm\u00f3xia para diferentes intensidades de desanima\u00e7\u00e3o de AMP.<\/span><\/p>\n<div class=\"aff\" style=\"text-align:justify;margin:.5em 0\"><span class=\"Apple-style-span\" style=\"color:#403838;font-family:'Lucida Sans Unicode', Arial, 'Lucida Grande', Tahoma, Verdana, Helvetica, sans-serif\"><span class=\"Apple-style-span\" style=\"font-size:12px;line-height:19px\"><b><br \/><\/b><\/span><\/span><\/div>\n<div class=\"aff\" style=\"text-align:justify;margin:.5em 0\"><span class=\"Apple-style-span\" style=\"color:#403838;font-family:Arial, Helvetica, sans-serif\"><span class=\"Apple-style-span\" style=\"line-height:19px\">Assim, este trabalho sugere que a principal fun\u00e7\u00e3o da AMP desanimase durante exerc\u00edcio de alta intensidade \u00e9 retardar a fadiga, atenuando a queda do pH. Isso ajuda-nos a compreender a inter-rela\u00e7\u00e3o dos sistemas de fornecimento de ATP e sua rela\u00e7\u00e3o com a fadiga durante o exerc\u00edcio.<\/span><\/span><\/div>\n<div class=\"blogger-post-footer\"><img width='1' height='1' src='https:\/\/blogger.googleusercontent.com\/tracker\/6438633595724989321-1475290010259150510?l=lucasgf-ufes.blogspot.com' alt='' \/><\/div>\n","protected":false},"excerpt":{"rendered":"<p>AMP deamination delays muscle acidification during heavy exercise and hypoxia. J Biol Chem.&nbsp;2006 Feb 10;281(6):3057-66. Korzeniewski B. Faculty of Biotechnology, Jagiellonian University, 30-387 Krak\u00f3w, Poland. benio@mol.uj.edu.pl Korzeniewski, em 2006, publicou este trabalho que demonstrou, atrav\u00e9s de uma abordagem in silico&nbsp;(atrav\u00e9s &hellip; <a href=\"https:\/\/blog.ufes.br\/lucasgf\/?p=103\">Continue lendo <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"_uag_custom_page_level_css":"","footnotes":""},"categories":[6,21],"tags":[],"class_list":["post-103","post","type-post","status-publish","format-standard","hentry","category-bioquimica","category-fisiologia"],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"post-thumbnail":false},"uagb_author_info":{"display_name":"Lucas Guimar\u00e3es Ferreira","author_link":"https:\/\/blog.ufes.br\/lucasgf\/?author=9"},"uagb_comment_info":25,"uagb_excerpt":"AMP deamination delays muscle acidification during heavy exercise and hypoxia. J Biol Chem.&nbsp;2006 Feb 10;281(6):3057-66. Korzeniewski B. Faculty of Biotechnology, Jagiellonian University, 30-387 Krak\u00f3w, Poland. benio@mol.uj.edu.pl Korzeniewski, em 2006, publicou este trabalho que demonstrou, atrav\u00e9s de uma abordagem in silico&nbsp;(atrav\u00e9s &hellip; Continue lendo &rarr;","_links":{"self":[{"href":"https:\/\/blog.ufes.br\/lucasgf\/index.php?rest_route=\/wp\/v2\/posts\/103","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.ufes.br\/lucasgf\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.ufes.br\/lucasgf\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.ufes.br\/lucasgf\/index.php?rest_route=\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.ufes.br\/lucasgf\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=103"}],"version-history":[{"count":0,"href":"https:\/\/blog.ufes.br\/lucasgf\/index.php?rest_route=\/wp\/v2\/posts\/103\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.ufes.br\/lucasgf\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=103"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.ufes.br\/lucasgf\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=103"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.ufes.br\/lucasgf\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=103"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}