{"id":7714,"date":"2024-08-08T09:37:19","date_gmt":"2024-08-08T09:37:19","guid":{"rendered":"https:\/\/longchangextracts.com\/?p=7714"},"modified":"2024-08-08T09:37:19","modified_gmt":"2024-08-08T09:37:19","slug":"triglyceride","status":"publish","type":"post","link":"https:\/\/longchangextracts.com\/tr\/trigliserit\/","title":{"rendered":"Orta ve uzun zincirli trigliseritlerin sindirimi, emilimi ve metabolizmas\u0131n\u0131n kar\u015f\u0131la\u015ft\u0131r\u0131lmas\u0131 nedir?"},"content":{"rendered":"<p>Ya\u011f asitleri, karbon zincirinin uzunlu\u011funa g\u00f6re k\u0131sa zincirli ya\u011f asitleri (4 karbon ve alt\u0131), orta zincirli ya\u011f asitleri (6-12 karbon) ve uzun zincirli ya\u011f asitleri (14 karbon ve \u00fcst\u00fc) olarak ayr\u0131l\u0131r. 6 karbonun alt\u0131ndaki ya\u011f asitleri do\u011fada zay\u0131f bir \u015fekilde da\u011f\u0131lm\u0131\u015ft\u0131r ve 12 karbonlu laurik asitlerin ve uzun zincirli ya\u011f asitlerinin metabolik yollar\u0131 benzerdir, bu nedenle tipik orta zincirli ya\u011f asitleri yaln\u0131zca 8-10 karbonlu ya\u011f asitlerini i\u00e7erir.<\/p>\n<p>Orta zincirli ya\u011f asitleri, uzun zincirli ya\u011f asitleri ve gliserol trigliseritleri, yani orta zincirli trigliseritleri (MCT) ve uzun zincirli trigliseritleri (LCT) olu\u015fturur ve bu iki ya\u011f asidinin sindirimi, emilimi ve metabolizmas\u0131 \u00e7ok farkl\u0131d\u0131r.<br \/>\n<strong>\u015eekil 1 LCT ve MCT'nin sindirimi, emilimi ve metabolizmas\u0131.<\/strong><\/p>\n<p><strong>LCT<\/strong><\/p>\n<p><strong>1. A\u011f\u0131z bo\u015flu\u011fu<\/strong><br \/>\nLCT a\u011fza girdikten sonra, t\u00fck\u00fcr\u00fck lipaz\u0131 trigliseritlerin hidrolizine neden olacak ve trigliseritlerin 3. pozisyonundaki ya\u011f asitleri hidrolize u\u011frayarak 1,2-gliserol diesterleri ve serbest ya\u011f asitleri \u00fcretecektir. Bununla birlikte, insanlarda, \u00f6zellikle yeti\u015fkinlerde, bu t\u00fcr bir hidroliz son derece k\u00fc\u00e7\u00fckt\u00fcr ve trigliseritlerin neredeyse tamam\u0131 yemek borusundan ge\u00e7erek do\u011frudan mideye ula\u015f\u0131r.<\/p>\n<p><strong>2. Gastrik<\/strong><br \/>\nT\u00fck\u00fcr\u00fck lipaz\u0131 gibi gastrik lipaz da trigliseritlerin sadece k\u00fc\u00e7\u00fck bir k\u0131sm\u0131n\u0131 hidrolize eder, b\u00f6ylece midede LCT hala esas olarak trigliserit formundad\u0131r. Midenin peristaltik hareketi sayesinde kat\u0131 ve s\u0131v\u0131 ya\u011flar di\u011fer g\u0131da maddeleriyle birlikte em\u00fclsifiye edilir ve k\u00fc\u00e7\u00fck par\u00e7alar halinde pilordan yava\u015f\u00e7a duodenuma ge\u00e7er.<\/p>\n<p><strong>3. \u0130nce ba\u011f\u0131rsak<\/strong><br \/>\nTrigliseritlerin hidrolizi esas olarak duodenumda ger\u00e7ekle\u015fir. Pankreatik lipaz\u0131n etkisi alt\u0131nda, bir trigliserit molek\u00fcl\u00fc iki serbest ya\u011f asidi molek\u00fcl\u00fcne ve bir 2-gliserol monoester molek\u00fcl\u00fcne hidrolize olur. Daha sonra, serbest ya\u011f asitleri ve monogliseritler (ve fosfolipitler, kolesterol, vb.) sindirim sular\u0131ndaki safra asitleriyle kar\u0131\u015f\u0131k bir mikro k\u00fcme olu\u015fturur ve kar\u0131\u015f\u0131k mikro k\u00fcme ince ba\u011f\u0131rsa\u011f\u0131n villuslar\u0131n\u0131n yard\u0131m\u0131yla ince ba\u011f\u0131rsa\u011f\u0131n \u00fcst k\u0131sm\u0131ndaki jejunum taraf\u0131ndan emilir; kar\u0131\u015f\u0131k mikro k\u00fcmedeki safra asitleri hemen emilmez, sadece lipit fraksiyonu emilir. \u0130nce ba\u011f\u0131rsakta emildikten sonra, ince ba\u011f\u0131rsa\u011f\u0131n epitel h\u00fccrelerinde, serbest ya\u011f asitleri ve monogliseritler trigliseritlere yeniden esterle\u015ftirilir ve bunlar daha sonra lenfatiklere fosfolipitler ve kolesterol esterleri ile birlikte \u00e7\u00f6lyak partik\u00fclleri olu\u015fturur.<\/p>\n<p><strong>4. Lenf ve kan<\/strong><br \/>\n\u00c7\u00f6lyak partik\u00fclleri lenfatik damarlardan ge\u00e7erek subklavian vende kanla birle\u015fir ve b\u00f6ylece kan dola\u015f\u0131m\u0131na kat\u0131l\u0131r. Kandaki trigliseritlerin bir k\u0131sm\u0131 lipoprotein lipaz (LPL) etkisi alt\u0131nda 2-gliserol monoesterlerine ve serbest ya\u011f asitlerine hidrolize olur ve v\u00fccuttaki doku ve kaslarda depolan\u0131rken, hidrolize olmam\u0131\u015f trigliseritler karaci\u011fere girer.<\/p>\n<p><strong>5. Karaci\u011fer<\/strong><br \/>\nKaraci\u011fer, v\u00fccut enerjiye ihtiya\u00e7 duydu\u011funda ya\u011f mobilizasyonunu ger\u00e7ekle\u015ftirir. Trigliseritler hidrolize ve \u03b2-okside edilir ve tamamen karbondioksit, su ve enerjiye ayr\u0131l\u0131r.<\/p>\n<p><strong>Tablo 1 LCT ve MCT metabolizmas\u0131n\u0131n kar\u015f\u0131la\u015ft\u0131r\u0131lmas\u0131<\/strong><\/p>\n<p><strong>MCT<\/strong><\/p>\n<p><strong>1. S\u00f6zl\u00fc<\/strong><br \/>\nA\u011f\u0131z bo\u015flu\u011fundaki t\u00fck\u00fcr\u00fck lipaz\u0131, MCT'nin 3 ya\u011f asidini LCT'den \u00e7ok daha h\u0131zl\u0131 hidrolize eder, bu nedenle MCT a\u011f\u0131z bo\u015flu\u011funda k\u0131smen hidrolize olur.<\/p>\n<p><strong>2. Mide<\/strong><br \/>\nMCT'nin \u00e7o\u011fu midede gliserol ve serbest ya\u011f asitlerine hidrolize olur, MCT hidrofilik oldu\u011fu i\u00e7in hidrolize olmas\u0131 daha kolayd\u0131r.<\/p>\n<p><strong>3. \u0130nce ba\u011f\u0131rsak<\/strong><br \/>\nMCT'nin \u00e7o\u011fu duodenuma serbest ya\u011f asitleri olarak girer, bu nedenle pankreatik lipaz gerekli de\u011fildir. Ayr\u0131ca MCT olduk\u00e7a hidrofiliktir ve kar\u0131\u015f\u0131k mikro k\u00fcmeler olu\u015fturmak i\u00e7in safra asitlerinin kat\u0131l\u0131m\u0131n\u0131 gerektirmez. \u015eeker ve proteinlerin par\u00e7alanma \u00fcr\u00fcnleri olan glikoz ve amino asitler gibi MCT de portal ven yoluyla do\u011frudan karaci\u011fere ta\u015f\u0131nabilir. Son zamanlarda, midede hidrolize u\u011framayan MCT'nin trigliserit formunda do\u011frudan ince ba\u011f\u0131rsa\u011fa emilebildi\u011fi g\u00f6sterilmi\u015ftir. Pankreatik lipaz ve safra asitleri gerekmedi\u011finden, MCT sindirim bozuklu\u011fu olan hastalar i\u00e7in uygundur.<\/p>\n<p><strong>4. Karaci\u011fer<\/strong><br \/>\nMCT portal ven yoluyla karaci\u011fere ula\u015ft\u0131ktan sonra h\u0131zl\u0131 bir \u03b2-oksidasyona u\u011frar ve sonunda enerji, karbondioksit ve suya ayr\u0131l\u0131r.<\/p>\n<p>MCT ve LCT'nin \u03b2-oksidasyon s\u00fcreci de farkl\u0131d\u0131r. Ya\u011f asidi oksidasyonu mitokondride ger\u00e7ekle\u015fir ve LCT, mitokondriyal d\u0131\u015f ve i\u00e7 membranlara girmek i\u00e7in lipoil koenzim A sentetaz, karnitin ve karnitin lipoiltransferaz (CPT-1, CPT-2, CPT-1 \u03b2-oksidasyon i\u00e7in h\u0131z s\u0131n\u0131rlay\u0131c\u0131 enzimdir) yard\u0131m\u0131na ihtiya\u00e7 duyar, MCT ise lipoil koenzim A'n\u0131n etkisine yan\u0131t olarak \u03b2-oksidasyona u\u011framak \u00fczere do\u011frudan mitokondriyal membrandan ge\u00e7ebilen orta zincirli ya\u011f asidi lipoil koenzim A'y\u0131 olu\u015fturur. Bu nedenle MCT, LCT'den daha h\u0131zl\u0131 bir \u03b2-oksidasyon h\u0131z\u0131na sahiptir ve \u00e7ok daha h\u0131zl\u0131 enerji \u00fcretir.<\/p>\n<p>MCT orta zincirli ya\u011f asidi lipoil koenzim A'ya d\u00f6n\u00fc\u015ft\u00fckten sonra, bir k\u0131sm\u0131 karaci\u011fer taraf\u0131ndan trigliseritlere, fosfolipitlere ve kolesteril esterlere vb. sentezlenir, ancak bu oran LCT'den \u00e7ok daha azd\u0131r. \u00c7o\u011fu mitokondride asetil koenzim A'ya \u03b2-oksitlenir, bu da trikarboksilik asit d\u00f6ng\u00fcs\u00fcne, ketogeneze, ya\u011f asidi sentezine veya kolesterol sentezine girer. Dolay\u0131s\u0131yla, MCT'nin v\u00fccuttaki nihai \u00fcr\u00fcnleri karbondioksit, su, keton cisimleri (aseton, asetoasetat, \u03b2-hidroksibutirat), kolesterol veya ya\u011f\u0131n yeniden sentezi i\u00e7in sitrik asit \u00fcretmek \u00fczere trikarboksilik asit d\u00f6ng\u00fcs\u00fcne giri\u015ftir.<\/p>","protected":false},"excerpt":{"rendered":"<p>Fatty acids are divided into short-chain fatty acids (4 carbon and below), medium-chain fatty acids (6-12 carbon), and long-chain fatty acids (14 carbon and above) according to the length of the carbon chain.Fatty acids below 6 carbon are poorly distributed in nature, and the metabolic pathways of 12-carbon lauric acids and long-chain fatty acids are [&hellip;]<\/p>","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[46],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is the comparison of digestion, absorption and metabolism of medium and long chain triglycerides? 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