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Metformin angl Metformin lat Metforminum tabletovanij cukroznizhuvalnij likarskij zasib klasu biguanidiv dlya prijomu vseredinu 2 Cej preparat zastosovuyetsya dlya likuvannya cukrovogo diabetu II tipu osoblivo u osib iz nadlishkovoyu masoyu tila ta ozhirinnyam ale viklyuchno u osib iz zberezhenoyu funkciyeyu nirok 3 4 5 Provodyatsya doslidzhennya po zastosuvannyu metforminu pri gestacijnomu diabeti i sindromi polikistoznih yayechnikiv Efektivnist metforminu doslidzhuvalas i pri inshih zahvoryuvannyah u rozvitku yakih vazhlivim faktorom ye rezistentnist do insulinu MetforminSistematizovana nazva za IUPACN N Dimethylimidodicarbonimidic diamideKlasifikaciyaATC kod A10BA02PubChem 4091CAS 657 24 9DrugBankHimichna strukturaFormula C4H11N5 Mol masa 129 164 g molFarmakokinetikaBiodostupnist 50 60 Metabolizm ne metabolizuyetsyaPeriod napivvivedennya 6 2 god Ekskreciya NirkiReyestraciya likarskogo zasobu v UkrayiniNazva firma virobnik krayina nomer reyestraciyi data GLYuKOFAZh Merk Sante Ispaniya FranciyaUA 3994 01 0220 08 2015 20 08 2020METAFORA AT Kiyivskij vitaminnij zavod Ukrayina UA 18164 01 0126 06 2020 26 06 2025SIOFOR 500 BERLIN HEMI AG MENARINI GRUP Menarini Fon Hejden GmbH NimechchinaUA 3734 01 0203 12 2010 03 10 2015DIAFORMINPAT Farmak UkrayinaUA 11857 03 0230 01 2014 30 01 2019 1 Pri pravilnomu zastosuvanni metforminu kilkist pobichnih efektiv ye neznachnoyu najchastishe vinikayut shlunkovo kishkovi rozladi i takozh neznachnim ye rizik viniknennya gipoglikemiyi Pri peredozuvanni preparatu i priznachenni jogo hvorim iz protipokazami do zastosuvannya najserjoznishoyu problemoyu ye laktatacidoz nakopichennya molochnoyi kisloti u krovi ale inshih nebezpek pov yazanih iz trivalim zastosuvannyam metforminu nemaye Metformin takozh spriyaye znizhennyu rivnya holesterinu LPNSh i trigliceridiv i jogo zastosuvannya ne spriyaye zbilshennyu masi tila Okrim cogo ce yedinij antidiabetichnij preparat yakij spriyaye znizhennyu smertnosti vid sercevo sudinnih uskladnen pri cukrovomu diabeti Metformin vhodit do spisku zhittyevo neobhidnih likarskih zasobiv VOZ razom iz inshim peroralnim protidiabetichnim zasobom glibenklamidom 6 Zmist 1 Istoriya stvorennya 2 Sintez i vlastivosti rechovini 3 Farmakodinamika 3 1 Farmakokinetika 4 Pokazannya do zastosuvannya 4 1 Likuvannya cukrovogo diabetu 4 2 Eksperimentalni pokazi 4 2 1 Prediabet 4 2 2 Sindrom polikistoznih yayechnikiv 4 2 3 Gestacijnij diabet 4 2 4 Dodatkovi efekti viyavleni pid chas doslidzhen 5 Protipokazannya 5 1 Zasterezhennya do zastosuvannya 6 Pobichna diya 6 1 Travna sistema 6 2 Laktatacidoz 6 3 Inshi pobichni efekti 6 4 Vzayemodiya z inshimi likarskimi preparatami 7 Formi vipusku 8 Dozuvannya 8 1 Peredozuvannya 9 Zasterezhennya 10 Primitki 11 PosilannyaIstoriya stvorennya RedaguvatiMetformin upershe opisanij u naukovij literaturi v 1922 roci Emilem Vernerom i Dzhejmsom Bellom yak promizhnij produkt u sintezi N N dimetilguanidinu 7 U 1929 roci Slotta i Cheshe viyavili cukroznizhuyuchu diyu metforminu v kroliv ta vidznachili sho vin mav najsilnishu cukroznizhuyuchu diyu z usih biguanidiv kotri vivchali ci doslidniki 8 Ale rezultati cih doslidzhen buli zabuti yak i doslidzhennya inshih pohidnih biguanidinu takih yak sintalin na foni populyarnosti insulinu 9 Interes do metforminu povernuvsya u kinci 40 h rokiv HH stolittya U 1950 roci vstanovleno sho metformin na vidminu vid inshih podibnih himichnih spoluk ne znizhuye arterialnij tisk i chastotu sercevih skorochen u tvarin 10 u comu zh roci filippinskij likar Eusebio Garsia 11 zastosovuvav metformin yakij vin nazivav flyuaminom u likuvanni gripu Vin vidznachiv sho preparat znizhuye riven cukru v krovi do minimalnogo fiziologichnogo rivnya pid chas likuvannya paciyentiv i ye netoksichnim Garsia takozh vvazhav sho metformin maye bakteriostatichnu protivirusnu protimalyarijnu zharoznizhuyuchu ta znebolyuvalnu diyu 12 U 1954 roci polskij farmakolog Yanush Supnevskij u seriyi statej 13 ne zumiv pidtverditi bilshist iz vishepererahovanih efektiv u lyudini v tomu chisli cukroznizhuyuchij efekt ale sposterigav deyaku protivirusnu aktivnist preparatu 14 15 nbsp G officinalis prirodne dzherelo galeginuU likarni Salpetriyer francuzkij diabetolog Zhan Stern vivchav cukroznizhuyuchi vlastivosti galeginu alkaloyidu vidilenogo iz kozlyatnika likarskogo yakij strukturno pov yazanij iz metforminom ta vivchav jogo korotkoterminove zastosuvannya yak protidiabetichnogo zasobu do rozrobki sintaliniv 16 Piznishe koli Stern pracyuvav u laboratoriyah Aron u Parizhi vin povtorno doslidzhuvav cukroznizhuyuchu aktivnist metforminu ta inshih biguanidiv Stern pershim sprobuvav zastosuvati metformin dlya likuvannya cukrovogo diabetu vin pridumav nazvu Glyukofazh fr Glucophage pozhirach glyukozi dlya cogo preparatu ta opublikuvav rezultati svoyih doslidzhen u 1957 roci 9 16 Iz 1958 roku metfomin stav dostupnim u Britanskomu nacionalnomu formulyari ta rozpochavsya jogo prodazh u Velikij Britaniyi 17 Ale shirokij interes do metforminu vidrodivsya lishe pislya vivedennya iz aptechnogo obigu inshih biguanidiv u 70 h rokah HH stolittya Metformin buv dopushenij do medichnogo zastosuvannya v Kanadi u 1972 roci 18 a u SShA vin buv shvalenij FDA dlya likuvannya cukrovogo diabetu II tipu lishe v 1994 roci 19 Pershoyu torgovoyu nazvoyu metforminu v SShA buv Glyukofazh viroblenij po licenziyi kompaniyeyu Bristol Myers Squibb prodazh yakogo rozpochavsya u SShA 3 bereznya 1995 roku 20 Generiki preparatu dostupni narazi u bagatoh krayinah i na dumku bagatoh doslidnikiv metformin stav najchastishe vikoristovuvanim antidiabetichnim preparatom 16 21 Sintez i vlastivosti rechovini RedaguvatiStandartnij sintez metforminu vpershe opisanij u 1922 roci Vin utvoryuyetsya pid chas reakciyi gidrohloridu dimetilaminu z 2 cianoguanidinom diciandiamid pri nagrivanni 7 22 nbsp U vidpovidnosti z proceduroyu opisanoyu u 1975 roci u patenti Aron 23 ta Enciklopediyi farmakologichnogo virobnictva angl Pharmaceutical Manufacturing Encyclopedia 24 ekvimolyarnu kilkist dimetilaminu i 2 cianoguanidinu rozchinyayut u toluoli oholodzhuyuchi sumish dlya otrimannya koncentrovanogo rozchinu a potim povilno dodayut ekvimolyarnu kilkist hloristogo vodnyu Otrimana sumish pochinaye kipiti samostijno i pislya oholodzhennya utvoryuyetsya osad gidrohloridu metforminu iz vihodom 96 Do 2005 roku vcheni pomilkovo 25 vvazhali sho metformin znahoditsya u protonovanij tautomernij formi Riznicya energij mizh pravilnim tautomerom i uyavnim skladala blizko 9 kkal mol Preparat zastosovuyetsya u viglyadi gidrohloridu metforminu struktura yakogo takozh utochnena 26 U 2008 roci opublikovanij opis pokrashenogo ekologichno chistogo iz vikoristannyam lishe kilkoh miligramiv reagentiv ta kilkoh krapel rozchinnika metodu sintezu metforminu yakij polyagaye u viglyadi p yatihvilinnoyi reakciyi z vikoristannyam ultravisokochastotnogo viprominyuvannya 27 Farmakodinamika RedaguvatiMetformin znizhuye koncentraciyu glyukozi v krovi shlyahom ingibuvannya utvorennya glyukozi glyukoneogenezu v pechinci 28 U hvorih cukrovim diabetom shvidkist glyukoneogenezu vtrichi visha za normu Metformin znizhuye cej pokaznik bilsh nizh na tretinu 29 Metformin aktivuye AMF aktivovanu proteyinkinazu AMFK ferment pechinki yakij graye rol u recepciyi insulinu a takozh u vsomu energetichnomu balansi organizmu ta metabolizmi glyukozi i zhiriv 30 Aktivaciya AMFK neobhidna dlya zapusku ingibuyuchogo efektu metforminu na glyukoneogenez u pechinci 31 U doslidzhenni opublikovanomu v 2008 roci mehanizm diyi metforminu buv opisanij bilsh detalno Dane doslidzhennya pokazalo sho aktivaciya AMFK neobhidna dlya zbilshennya ekspresiyi bilka SHP angl Small heterodimer partner yakij u svoyu chergu prignichuye ekspresiyu fosfoenolpiruvatkarboksikinazi i glyukozo 6 fosfatazi yaki berut uchast u glyukoneogenezi 32 Metformin chasto zastosovuyut u doslidzhennyah AICA angl aminoimidazole carboxamide ribonukleotidu yak agonista AMFK Mehanizm aktivaciyi biguanidami AMFK poki sho zalishayetsya nevidomim prote doslidzhennya pokazuyut sho metformin pidvishuye kilkist citozolnogo AMF 33 U doslidzhennyah pokazano sho metformin maye pomirnu zdatnist do ingibuvannya dihalnogo kompleksu I4 i jmovirno sho dana vlastivist preparatu lezhit u osnovi jogo mehanizmu diyi 34 Okrim prignichennya glyukoneogenezu v pechinci metformin pidvishuye chutlivist tkanin do insulinu zbilshuye periferichne zahoplennya glyukozi shlyahom fosforilyuvannya faktoru GLUT 4 pidvishuye okislennya zhirnih kislot 35 ta zmenshuye vsmoktuvannya glyukozi zi shlunkovo kishkovogo traktu Pidvishennya periferichnoyi utilizaciyi glyukozi jmovirno pov yazano iz pokrashennyam zv yazuvannya insulinu z insulinovimi receptorami 36 AMFK imovirno takozh vidigraye u comu pevnu rol tomu sho priznachennya metforminu prizvodit do pidvishennya aktivnosti AMFK u skeletnih m yazah 37 Vidomo sho AMFK viklikaye sintez GLUT4 na plazmatichnij membrani vnaslidok chogo vidbuvayetsya nezalezhnij vid insulinu proces poglinannya glyukozi Deyaki metabolichni efekti metforminu najimovirnishe vidbuvayutsya za AMFK nezalezhnimi mehanizmami doslidzhennya u 2008 roci pokazalo sho metabolichni efekti metforminu v miokardi mozhut vinikati nezalezhno vid zmin u aktivnosti AMFK i mozhut buti sprichinenimi p38 MARK angl p38 mitogen activated protein kinases i RKS zalezhnimi mehanizmami 38 Metformin znizhuye koncentraciyu u krovi trigliceridiv holesterinu ta lipoproteyiniv nizkoyi shilnosti pri viznachenni koncentraciyi natshe ta ne zminyuye koncentraciyu lipoproteyiniv inshoyi shilnosti Okrim cogo preparat stabilizuye abo znizhuye masu tila Pri vidsutnosti u krovi insulinu terapevtichni vlastivosti metforminu ne sposterigayutsya Preparat ne viklikaye gipoglikemichnih reakcij Metformin pokrashuye fibrinolitichni vlastivosti krovi vnaslidok prignichennya ingibitora aktivatora profibrinolizinu plazminogenu tkaninnogo tipu Pri zastosuvanni metforminu riven glyukozi u krovi mozhe znizitis na 20 a vmist glikozilovanogo gemoglobinu na 1 5 Monoterapiya metforminom u porivnyanni iz zastosuvannyam inshih peroralnih cukroznizhuyuchih zasobiv pioglitazonom akarbozoyu pohidnimi sulfonilsechovini a takozh u porivnyanni z diyetoyu insulinom i placebo znizhuye rizik rozvitku infarktu miokardu a takozh znizhuye zagalnu smertnist u populyaciyi osib iz insulinonezalezhnim cukrovim diabetom pro sho povidomleno v sistematichnomu oglyadi 29 klinichnih doslidzhen opublikovanih u Kokranivskij biblioteci 39 40 41 Farmakokinetika Redaguvati Absolyutna biodostupnist metforminu natshe skladaye 50 60 prijom preparatu z yizheyu znizhuye jogo maksimalnu koncentraciyu v krovi na 40 i zbilshuye na 35 hvilin chas dosyagnennya jogo maksimalnoyi koncentraciyi u krovi 42 43 Absorbciya metforminu ocinyuyetsya u mezhah 48 52 Metformin shvidko vsmoktuyetsya u shlunkovo kishkovomu trakti maksimalna koncentraciya preparatu v krovi dosyagayetsya protyagom 1 3 godin 1 81 2 69 g pri zastosuvanni likarskoyi formi iz negajnim vivilnennyam i 4 8 godin pri zastosuvanni likarskoyi formi iz spovilnenim vivilnennyam 42 43 Koncentraciya preparatu v krovi ne perevishuye 1 mkg ml protyagom 24 48 godin pislya zastosuvannya Metformin lishe v neznachnij kilkosti zv yazuyetsya z bilkami plazmi krovi pro sho svidchit duzhe visokij ob yem jogo rozpodilu 654 358 l pislya prijomu odnokratnoyi dozi 850 mg Postijnij efekt sposterigayetsya zazvichaj za 1 2 dobi pislya pochatku zastosuvannya preparatu 42 Metformin ne metabolizuyetsya Preparat vivoditsya z organizmu iz secheyu shlyahom kanalcevoyi sekreciyi ta ne viznachayetsya u plazmi krovi cherez 24 godini pislya odnokratnogo peroralnogo zastosuvannya 42 44 Serednij period napivvivedennya iz plazmi krovi stanovit 6 2 godini pochatkovij vid 1 7 do 3 god kincevij vid 9 do 17 godin 42 Metformin rozpodilyayetsya ta jmovirno nakopichuyetsya v eritrocitah zi znachno bilshim periodom napivvivedennya 17 6 godin 42 ye povidomlennya pro trivalist periodu napivvivedennya 18 5 31 5 godin pri odnorazovomu zastosuvanni u osib sho ne hvoriyut na cukrovij diabet 44 Pokazannya do zastosuvannya RedaguvatiZauvazhte Vikipediya ne daye medichnih porad Yaksho u vas vinikli problemi zi zdorov yam zvernitsya do likarya Likuvannya cukrovogo diabetu Redaguvati Osnovnim pokazannyam do priznachennya metforminu ye likuvannya cukrovogo diabetu II tipu osoblivo v osib z nadlishkovoyu vagoyu U cij grupi paciyentiv yaki likuvalis preparatom 10 rokiv i bilshe metformin znizhuvav rizik uskladnen cukrovogo diabetu i zagalnu smertnist u grupi v cilomu na 30 v porivnyanni z insulinom ta preparatami sulfonilsechovini glibenklamidom i hlorpropamidom ta na 40 u porivnyanni iz grupoyu rekomendaciyi dlya yakoyi obmezhilis priznachennyam diyetichnogo harchuvannya 45 46 Cya riznicya zberigayetsya u hvorih sposterezhennya za yakimi prodovzhuvalis 5 10 rokiv pislya zakinchennya danogo doslidzhennya 47 Oskilki bilsh retelnij kontrol rivnya glyukozi u krovi pri zastosuvanni metforminu znizhuye rizik pov yazanih iz diabetom kincevih tochok u hvorih cukrovim diabetom iz nadlishkovoyu vagoyu i ce pov yazano iz menshoyu imovirnistyu zbilshennya masi tila i menshoyu kilkistyu pristupiv gipoglikemiyi nizh u grupah paciyentiv yaki zastosovuyut insulin i preparati sulfonilsechovini metformin mozhe buti preparatom viboru v grupi takih paciyentiv 45 48 Pri zastosuvanni metforminu rizik viniknennya gipoglikemiyi znachno nizhchij nizh pri zastosuvanni preparativ sulfonilsechovini 49 50 hocha viniknennya takih pristupiv imovirne pri intensivnih fizichnih navantazhennyah energetichnomu goloduvanni abo pri zastosuvanni metforminu razom iz inshimi cukroznizhuyuchimi preparatami 51 52 Pri zastosuvanni metforminu vidsutnij rizik zbilshennya masi tila ta sposterigayetsya pomirne znizhennya rivnya lipoproteyiniv nizkoyi shilnosti i trigliceridiv u plazmi krovi 49 50 Okrim cogo metformin mozhe zastosovuvatisya u kompleksnomu likuvanni ozhirinnya razom iz inshimi preparatami Eksperimentalni pokazi Redaguvati Metformin use chastishe zastosovuyetsya u likuvanni sindromu polikistoznih yayechnikiv 53 nealkogolnih zhirovih zahvoryuvan pechinki 54 ta peredchasnomu statevomu dozrivanni 55 inshih zahvoryuvannyah yaki suprovodzhuyutsya rezistentnistyu do insulinu Ci pokazi do zastosuvannya nateper vvazhayutsya eksperimentalnimi Perevagi zastosuvannya metforminu pri nealkogolnih zhirovih zahvoryuvannyah pechinki vivcheni she nedostatno 56 hocha zgidno z rezultatami kilkoh randomizovanih klinichnih doslidzhen viyavleno znachne pokrashennya pri jogo zastosuvanni u paciyentiv iz danimi zahvoryuvannyami ale dokaziv pozitivnogo vplivu metforminu pri danij patologiyi she nedostatno 57 58 Prediabet Redaguvati Likuvannya metforminom osib yaki mayut rizik rozvitku cukrovogo diabetu II tipu mozhe zmenshiti virogidnist rozvitku cogo zahvoryuvannya hocha znachno krashe dlya ciyeyi meti pidhodyat intensivni fizichni navantazhennya ta korekciya harchuvannya U velikomu doslidzhenni v SShA sho vidome pid nazvoyu Programa profilaktiki cukrovogo diabetu uchasniki buli rozdileni na tri grupi Odna z grup otrimuvala placebo insha metformin a tretya grupa otrimala rekomendaciyi po zminah u sposobi zhittya usi grupi sposterigalis u serednomu protyagom 3 rokiv Intensivna programa zmini sposobu zhittya vklyuchala 16 urokiv vivchennya diyeti ta fizichnih vprav uchasnikam doslidzhennya bulo postavlene zavdannya zniziti masu tila na 7 ta dotrimuvatis fizichnoyi aktivnosti ne menshe nizh 150 hvilin na tizhden Zahvoryuvanist na cukrovij diabet bula na 58 nizhchoyu u grupi z modifikaciyeyu sposobu zhittya ta na 31 u grupi sho otrimuvala metformin Sered molodih lyudej iz bilsh visokim indeksom masi tila zmina sposobu zhittya ne bula bilsh efektivnoyu za metformin a dlya lyudej pohilogo viku iz nizkim indeksom masi tila metformin ne buv efektivnishim za placebo u profilaktici cukrovogo diabetu 59 Pislya 10 rokiv sposterezhen zahvoryuvanist cukrovim diabetom bula na 34 nizhchoyu u grupi z modifikaciyeyu sposobu zhittya i na 18 nizhchoyu v grupi yaka otrimuvala metformin 60 Iz rezultativ prvedenih doslidzhen nezrozumilim zalishayetsya pitannya chi spovilnyuye metformin progresuvannya prediabetu u cukrovij diabet spravzhnij profilaktichnij efekt chi znizhennya riziku rozvitku cukrovogo diabetu viniklo vnaslidok cukroznizhuyuchogo efektu metforminu likuvalnij efekt 61 Sindrom polikistoznih yayechnikiv Redaguvati Dlya likuvannya sindromu polikistoznih yajnikiv u kinci 80 h rokiv HH stolittya bulo zaproponovano protidiabetichni preparati oskilki pri danomu zahvoryuvanni chasto vinikaye rezistentnist do insulinu 62 Upershe pro zastosuvannya metforminu pri sindromi polikistoznih yajnikiv povidomlyalos u nevelikomu doslidzhenni yake provodilos u Andskomu universiteti u Venesueli 63 64 Nacionalnij institut zdorov ya Velikoyi Britaniyi u 2004 roci rekomenduvav zhinkam iz sindromom polikistoznih yajnikiv ta indeksom masi tila bilshe 25 zastosovuvati metformin dlya likuvannya anovulyatornogo sindromu i bezpliddya koli zastosuvannya inshih metodiv likuvannya ne prineslo pozitivnih rezultativ 65 Prote u dvoh velikih klinichnih doslidzhennyah yaki provodilis u 2006 2007 rokah otrimano perevazhno negativni rezultati zastosuvannya metforminu pri sindromi polikistoznih yajnikiv ne ye efektivnishim za placebo a kombinaciya metforminu z klomifenom ne ye efektivnishoyu nizh monoterapiya klomifenom 66 67 Iz urahuvannyam rezultativ danih doslidzhen u nastupnih oglyadah vidznachayetsya sho veliki randomizovani kontrolovani doslidzhennya v cilomu ne pidtverdili perspektivnist takoyi terapiyi yaku bulo zaproponovano v nevelikih rannih doslidzhennyah Mizhnarodni rekomendaciyi po likuvannyu ne rekomenduyut metformin yak zasib pershoyi liniyi dlya likuvannya sindromu polikistoznih yajnikiv 68 abo vzagali ne rekomenduyut jogo zastosuvannya za viklyuchennyam zhinok zi znizhennyam tolerantnosti do glyukozi 69 U mizhnarodnih rekomendaciyah vkazuyetsya sho klomifen ye preparatom pershoyi liniyi dlya likuvannya sindromu polikistoznih yajnikiv a takozh nagoloshuyetsya na vazhlivosti zmini sposobu zhittya nezalezhno vid medikamentoznogo likuvannya Na dumku chastini vchenih sistematichnij oglyad 4 porivnyalnih doslidzhen metforminu i klomifenu vkazuye na yih odnakovu efektivnist u likuvanni bezpliddya sprichinenogo sindromom polikistoznih yajnikiv 70 Redakcijna rada BMJ zaznachila sho 4 doslidzhennya dali pozitivni rezultati zastosuvannya metforminu v paciyentok u yakih zastosuvannya klomifenu bulo neefektivnim ta zaproponuvala zastosovuvati metformin yak preparat drugoyi liniyi u vipadkah neefektivnosti zastosuvannya klomifenu 71 U inshomu oglyadi metformin rekomenduyetsya yak preparat pershoyi liniyi dlya likuvannya sindromu polikistoznih yajnikiv u zv yazku iz tim sho vin ne tilki vplivaye na znizhennya yavisha anovulyaciyi ale j pozitivno vplivaye na rezistentnist do insulinu girsutizm ta ozhirinnya sho chasto pov yazani iz sindromom polikistoznih yajnikiv 72 Kokranivskij oglyad yakij vklyuchaye 27 randomizovanih klinichnih doslidzhen pokazav sho metformin pokrashuye ovulyaciyu ta spriyaye nastannyu vagitnosti osoblivo u poyednanni z klomifenom ale pri comu ne zbilshuyetsya chislo zhivonarodzhenih nemovlyat 73 Gestacijnij diabet Redaguvati Kilka oglyadovih ta randomizovanih doslidzhen vkazuyut na te sho metformin tak samo efektivnij i bezpechnij yak i insulin u likuvanni gestacijnogo diabetu 74 75 76 a zgidno rezultativ nevelikih doslidzhen po tipu vipadok kontrol otrimani dani sho diti cih materiv yaki otrimuvali pid chas vagitnosti metformin zamist insulinu mozhut buti zdorovishimi u neonatalnomu periodi 77 Ale nezvazhayuchi na otrimani dani pislya opublikuvannya vishezaznachenih doslidzhen buli viyavleni pevni problemi z interpretaciyeyu yih rezultativ i tomu dosi vidsutni tochni dokazi dovgotrivaloyi bezpeki materi ta ditini pri zastosuvanni metforminu 78 Dodatkovi efekti viyavleni pid chas doslidzhen Redaguvati Velike doslidzhennya provedene u viglyadi vipadok kontrol yake provodilos u MD Anderson Cancer Center pokazalo sho metformin mozhe spriyati znachnomu znizhennyu riziku rozvitku raku pidshlunkovoyi zalozi Rizik raku pidshlunkovoyi zalozi v uchasnikiv doslidzhennya yaki prijmali metformin buv na 62 nizhchij nizh u tih uchasnikiv doslidzhennya yaki ne prijmali likarskih preparativ a v uchasnikiv doslidzhennya yaki prijmali insulin abo preparati sulfonilsechovini viyavleno pidvishennya riziku rozvitku raku pidshlunkovoyi zalozi vidpovidno u 5 raziv i 2 5 razi u porivnyanni z timi uchasnikami doslidzhennya yaki ne prijmali likarskih preparativ U doslidzhenni buli pevni obmezhennya ale prichina cogo znizhennya riziku poki sho ye nezrozumiloyu 79 Sposterezhennya provedeni v Universiteti Dandi viyavili znizhennya kilkosti vipadkiv raku na 25 37 u hvorih diabetom yaki prijmali metformin 80 81 Kilka epidemiologichnih doslidzhen ta doslidzhen vipadok kontrol vkazuyut na te sho hvori na cukrovij diabet yaki prijmayut metformin mozhut mati menshu jmovirnist zahvoriti na rak u porivnyanni z timi paciyentami yaki prijmayut inshi cukroznizhuyuchi zasobi Prichini cogo poki sho zalishayutsya nevidomim a rezultati cogo doslidzhennya potrebuyut pidtverdzhennya v kontrolovanih doslidzhennyah 82 Odne randomizovane kontrolovane doslidzhennya vkazuye na te sho metformin galmuye zbilshennya masi tila u hvorih yaki prijmayut atipovi antipsihotichni preparati osoblivo u poyednanni zi zminoyu obrazu zhittya navchannya diyeta i fizichni vpravi 83 U eksperimenti provedenomu v Nacionalnomu instituti vivchennya probem starinnya trivalist zhittya mishej yaki otrimuvali metformin u vidnosno nizkih dozah zbilshilas priblizno na 5 u porivnyanni iz zvichajnoyu trivalistyu zhittya mishej i okrim cogo sposterigavsya bilsh piznij pochatok zahvoryuvan pov yazanih iz vikom Prote bilsh visoki dozi preparatu viyavilis toksichnimi i trivalist zhittya mishej yaki otrimuvali vishi dozi metforminu bula nevisokoyu 84 Zgidno povidomlen presi vcheni u SShA mayut provesti velike klinichne doslidzhennya shodo jmovirnosti podovzhennya zhittya osib yaki prijmayut metformin ta mayut namir z pochatku 2016 roku zaluchiti do cogo doslidzhennya ponad 3000 osib u vici 70 80 rokiv u yakih diagnostovano rak sercevi zahvoryuvannya stareche nedoumstvo abo isnuye visokij rizik viniknennya danih zahvoryuvan Doslidniki spodivayutsya sho zastosuvannya metforminu dozvolit zbilshiti serednyu trivalist zhittya lyudini do 110 120 rokiv oskilki podibni rezultati otrimani v eksperimentah na laboratornih tvarinah 85 Protipokazannya RedaguvatiMetformin protipokazanij osobam sho mayut bud yaki stani sho pidvishuyut rizik viniknennya laktatacidozu v tomu chisli zahvoryuvannya nirok pri rivni kreatininu v krovi bilshe 150 mkm l 86 hocha cej riven ye radshe umovnoyu mezheyu legen ta pechinki alkogolizm Zgidno informaciyi virobnikiv preparatu serceva nedostatnist u tomu chisli nestabilna abo gostra zastijna serceva nedostatnist pidvishuye rizik rozvitku laktatacidozu pri zastosuvanni metforminu 87 Ale sistematichnij oglyad kontrolovanih klinichnih doslidzhen u 2007 roci pokazav sho metformin ye yedinim protidiabetichnim preparatom yakij ye neshkidlivim dlya hvorih iz sercevoyu nedostatnistyu ta mozhe zmenshiti smertnist u porivnyanni z inshimi cukroznizhuyuchimi zasobami 88 Rekomendovano takozh pripiniti zastosuvannya metforminu za dvi dobi pered bud yakim obstezhennyam iz vvedennyam jodovmisnih rentgenodiagnostichnih preparativ napriklad pri KT abo angiografiyi oskilki rentgenkontrastna rechovina mozhe timchasovo znizhuvati funkciyu nirok sho mozhe oposeredkovano prizvoditi do viniknennya laktatacidozu a takozh upovilnyuvati vivedennya metforminu z organizmu 89 90 Rekomendovano vidnovlyuvati prijom metforminu cherez dvi dobi pislya zastosuvannya retgenokontrastnih preparativ pislya togo yak vidnovlyuyetsya funkciya nirok 89 90 Protipokazami do zastosuvannya metforminu ye takozh pidvishena chutlivist do preparatu giperglikemichna koma ketoacidoz gostrij infarkt miokardu degidrataciya nizkokalorijna diyeta mensh nizh 1000 kkal dobu laktatacidoz u tomu chisli v anamnezi vagitnist ta perod goduvannya grudmi Zasterezhennya do zastosuvannya Redaguvati Metformin zastosovuyetsya z oberezhnistyu u paciyentiv starshih 60 rokiv ta osobam sho zajmayutsya vazhkoyu fizichnoyu praceyu pidvishenij rizik viniknennya laktatacidozu Pobichna diya RedaguvatiTravna sistema Redaguvati Najchastishimi pobichnimi efektami metforminu shlunkovo kishkovi rozladi v tomu chisli metalichnij prismak u roti znizhennya apetitu diareya nudota blyuvannya kishkovi kolki i meteorizm Pri zastosuvanni metforminu pobichni efekti z boku travnoyi sistemi vinikayut chastishe nizh pri zastosuvanni inshih protidiabetichnih preparativ 50 U klinichnomu doslidzhenni u yakomu vzyalo uchast 286 paciyentiv 53 2 iz 141 uchasnikiv yaki prijmali metformin iz negajnim vivilnennyam povidomili pro viniknennya diareyi u porivnyanni z 11 7 u grupi placebo i 25 5 povidomili pro viniknennya nudoti i blyuvannya u porivnyanni z 8 3 u grupi placebo 91 Shlunkovo kishkovi rozladi mozhut stvoryuvati veliki nezruchnosti paciyentu voni vinikayut chastishe pri pershomu zastosuvanni preparatu abo pri zbilshenni jogo dozi Poyavi cih uskladnen mozhna zapobigti yaksho rozpochinati prijom preparatu iz nizkih doz 1 1 7 g na dobu iz postupovim zbilshennyam dozi Shlunkovo kishkovi rozladi pri postijnomu i trivalomu zastosuvanni vinikayut ridshe Trivale zastosuvannya metforminu pov yazane iz pidvishennyam rivnya gomocisteyinu 92 ta porushennyam vsmoktuvannya vitaminu B12 93 94 Visoki dozi preparatu i jogo trivale zastosuvannya pov yazani iz pidvishennyam zahvoryuvanosti na nedostatnist vitaminu B12 95 i chastina vchenih rekomenduye provoditi rannye viyavlennya i profilaktiku takih staniv 96 Laktatacidoz Redaguvati Laktatacidoz ye najvazhchim pobichnim efektom yakij mozhe viniknuti pri zastosuvanni biguanidiv Inshij biguanid fenformin vidklikanij iz farmacevtichnogo rinku u zv yazku iz visokim rizikom rozvitku laktatacidozu 40 64 vipadki na miljon lyudino rokiv Ale metformin ye bezpechnishim za fenformin 97 Ce uskladnennya prizastosuvanni metforminu sposterigayetsya vkraj ridko i bilshist takih vipadkiv pov yazani iz suputnimi stanami takimi yak porushennya funkciyi pechinki abo nirok 98 Metabolizm molochnoyi kisloti u pechinci pri zastosuvanni metforminu spovilnyuyetsya u zv yazku z tim sho laktat ye substratom dlya pechinkovogo glyukoneogenezu procesu yakij ingibuye metformin U zdorovih osib cej nadlishok prosto vidalyayetsya za dopomogoyu inshih mehanizmiv u tomu chisli vivedennya nirkami yaksho yih funkciya neporushena i vidbuvayetsya lishe neznachne pidvishennya rivnya laktatu v krovi 49 Ale pri porushennyah funkciyi nirok vivedennya metforminu i laktatu upovilnyuyetsya sho prizvodit do zbilshennya yih koncentraciyi u krovi ta vnaslidok cogo prizvodit do viniknennya laktatacidozu za rahunok nakopichennya molochnoyi kisloti Oskilki metformin znizhuye poglinannya pechinkoyu laktatu bud yakij stan sho mozhe sprichiniti laktatacidoz ye protipokazom do jogo zastosuvannya Najchastishimi prichinami viniknennya laktatacidozu ye alkogolizm unaslidok visnazhennya zapasiv NAD serceva nedostatnist ta zahvoryuvannya dihalnoyi sistemi vnaslidok nasichennya tkanin kisnem a zahvoryuvannya nirok ye najchastishoyu prichinoyu porushennya vivedennya molochnoyi kisloti z organizmu 99 Okrim cogo ye pripushennya sho metformin pidvishuye utvorennya laktatu v tonkomu kishechniku sho potencijno mozhe spriyani rozvitku laktatacidozu v hvrorih iz faktorami riziku 28 Prote klinichne znachennya cogo yavisha nevidome a rizik metformin indukovanogo laktatacidozu najchastishe pov yazanij iz porushennyam metabolizmu molochnoyi kisloti v pechinci a ne zbilshennyam jogo utvorennya v tonkomu kishechniku 49 99 100 Inshi pobichni efekti Redaguvati u doslidzhennyah viyavleno sho metformin znizhuye riven tireotropnogo gormonu v krovi hrorih na gipotireoz 101 a u cholovikiv znizhuye riven testosteronu 102 103 Klinichne znchennya cih yavish poki sho nevidome Pri alergiyi do preparatu mozhlivo viniknennya visipan na shkiri u poodinokih vipadkah sposterigayetsya rozvitok megaloblastnoyi anemiyi U vih vipadkah viniknennya pobichnih efektiv slid vidminiti preparat abo zmenshiti jogo dozu Vzayemodiya z inshimi likarskimi preparatami Redaguvati Blokator H2 gistaminovih receptoriv cimetidin prizvodit do zbilshennya koncentraciyi metforminu v plazmi krovi za rahunok znizhennya vivedennya preparatu nirkami 104 a oskilki metformin ta cimetidin vivodyatsya shlyahom kanalcevoyi sekreciyi to kationna forma cimetidinu mozhe konkuruvati iz metforminom za odin i toj zhe shlyah vivedennya iz organizmu 42 Nevelike podvijne slipe randomizovane doslidzhennya pokazalo sho cefaleksin takozh zbilshuye koncentraciyu metforminu v krovi za analogichnim mehanizmom Teoretichno bud yakij kationnij preparat amilorid digoksin morfin prokayinamid hinidin hinin ranitidin triamteren i vankomicin mozhe prizvesti do analogichnogo efektu 42 Metformin nesumisnij iz etanolom viniknennya laktatacidozu Z oberezhnistyu metformin priznachayut iz nepryamimi antikoagulyantami Pohidni sulfonilsechovini insulin akarboza ingibitori MAO oksitetraciklin ingibitori APF klofibrat ciklofosfamid i salicilati posilyuyut diyu metforminu Pri odnochasnomu zastosuvanni z peroralnimi glyukokortikoyidami ta gormonalnimi kontraceptivnimi preparatami adrenalinom glyukagonom gormonami shitopodibnoyi zalozi pohidnimi fenotiazinu tiazidnimi diuretikami pohidnimi nikotinovoyi kisloti isnuye jmovirnist znizhennya gipoglikemichnoyi diyi metforminu Nifedipin pidvishuye vsmoktuvannya metforminu zbilshuye jogo maksimalnu koncentraciyu ta upovilnyuye jogo vivedennya z krovi Formi vipusku RedaguvatiMetformin vipuskayetsya u viglyadi tabletok iz negajnim vivilnennyam diyuchogo preparatu po 0 25 ta 0 5 g i tabletok iz spovilnenim vivilnennyam diyuchoyi rechovini po 0 85 ta 1 0 g 2 105 Metformin vipuskayetsya takozh u formi tabletok u kombinaciyi z inshimi peroralnimi cukroznizhuyuchimi preparatami glibenklamidom 105 roziglitazonom pioglitazonom sitagliptinom vildagliptinom saksagliptinom linagliptinom alogliptinom repaglinidom dapagliflozinom kanagliflozinom akarbozoyu gemigliptinom empagliflozinom 106 ta gliklazidom 107 Dozuvannya Redaguvati nbsp Tabletki metforminu 500 mg yaki prodayutsya u Velikij Britaniyi Metformin zastosovuyetsya peroralno pid chas abo bezposeredno pislya yizhi Paciyenti yaki ne otrimuyut insulin prijmayut preparat po 1 gramu 2 razi na dobu abo po 500 mg 3 razi na dobu pershi tri dobi piznishe z 4 do 14 dnya po 1 g 3 razi na dobu Za 15 dib dozuvannya metforminu mozhna zmenshiti z urahuvannyam koncenraciyi glyukozi u krovi ta sechi Pidtrimuyucha dobova doza stanovit 1 2 g Tabletki retard 850 mg prijmayut po odnij zranku i vvecheri maksimalna dobova doza preparatu stanovit 3 g Pri odnochasnomu zastosuvanni insulinu v dozi do 40 od dobu rezhim dozuvannya metforminu ne zminyuyetsya u takih vipadkah dozu insulinu mozhna postupovo znizhuvati na 4 8 odinic dobu cherez den Pri dozi insulinu bilshe 40 od dobu zastosuvannya metforminu ta znizhennya dozi insulinu potrebuyut oberezhnosti ta provodyatsya viklyuchno v stacionari 108 Peredozuvannya Redaguvati Oglyad povidomlen pro navmisni ta nenavmisni vipadki peredozuvannya metforminu sho provodivsya protyagom 5 rokiv pokazav sho vipadki serjoznih pobichnih yavish preparatu ye ridkimi hocha u litnih paciyentiv voni mozhut sposterigatisya chastishe 109 Analogichne doslidzhennya u yakomu zareyestrovani vipadki peredozuvannya analizuvalisya u centri kontrolu za otrutami Tehasu protyagom 2000 2006 rokiv pokazalo sho zastosuvannya preparatu v dozi bilshe 5 g na dobu chasto prizvodilo do serjoznih naslidkiv u doroslih 110 U medichnij literaturi opisani vipadki vizhivannya osib yaki svidomo prijmali 63 g metforminu 111 Vipadki smertelnogo peredozuvannya metforminu traplyayutsya ale ridko 112 113 114 U zdorovih ditej dozi mensh nizh 1 7 g dobu ne viklikayut znachnih toksichnih efektiv 115 Najrozpovsyudzhenishimi simptomami peredozuvannya ye nudota blyuvannya bil u zhivoti diareya tahikardiya sonlivist ridshe giperglikemiya abo gipoglikemiya 110 113 Golovnim i potencijno najbilsh nebezpechnim dlya zhittya uskladnennyam peredozuvannya metforminu ye laktatacidoz yakij prizvodit do nakopichennya molochnoyi kisloti v organizmi 116 117 Hvori u yakih viyavleno simptomi laktatacidozu potrebuyut negajnoyi gospitalizaciyi Specifichnij antidot pri laktatacidozi vidsutnij Na pochatkovih stadiyah mozhlive zastosuvannya gidrokarbonatu natriyu hocha veliki dozi cogo zasobu ne rekomenduyutsya u zv yazku iz mozhlivistyu zbilshennya vnutrishnoklitinnogo acidozu 114 Pri acidozi simptomi yakogo ne zmenshuyutsya pislya zastosuvannya gidrokarbonatu natriyu neobhidno provedennya standartnogo gemodializu abo bezperervnoyi veno venoznoyi gemofiltraciyi Okrim cogo ci metodi dosit efektivni dlya vidalennya metforminu z plazmi krovi u zv yazku iz tim sho metformin ne zv yazuyetsya z bilkami plazmi i ye nizkomolekulyarnoyu spolukoyu a takozh dlya poperedzhennya nakopichennya laktatu v krovi 118 119 120 Viznachennya rivnya metforminu v plazmi abo sirovatci krovi mozhlive dlya kontrolyu likuvannya dlya pidtverdzhennya diagnozu peredozuvannya u gospitalizovanih paciyentiv abo pri provedenni sudovo medichnoyi ekspertizi dlya vstanovlennya prichini smerti Koncentraciya metforminu v krovi zazvichaj stanovit 1 4 mg l u osib yaki zastosovuvali preparat dlya likuvannya 40 120 mg l u osib iz peredozuvannyam ta 80 200 mg l pri smertelnih vipadkah najchastishe zastosovuyutsya hromatografichni metodi viznachennya preparatu 121 122 Pri zastosuvanni dozi 85 g metforminu ne sposterigavsya rozvitok gipoglikemiyi navit yaksho pri zastosuvanni takoyi dozi preparatu sposterigavsya laktatacidoz yakij vinikaye yak pri peredozuvanni preparatu tak i nayavnistyu faktoriv riziku viniknennya danogo uskladnennya Rannimi simptomami laktatacidozu ye pidvishennya temperaturi tila bil u zhivoti mialgiya piznishe takozh sposterigayutsya tahipnoe zapamorochennya porushennya svidomosti azh do rozvitku komi 2 108 Zasterezhennya RedaguvatiPid chas likuvannya metforminom neobhidno kontrolyuvati funkciyu nirok viznachennya koncentraciyi laktatu neobhidno provoditi ne ridshe nizh 2 razi na rik a takozh pri poyavi mialgiyi Pri rozvitku laktatacidozu slid negajno vidminiti metformin Ne rekomenduyetsya priznachennya preparatu v razi nebezpeki rozvitku degidrataciyi Pri velikih hirurgichnih vtruchannyah i travmah a takozh opikah infekcijnih zahvoryuvannyah iz lihomankovim sindromom mozhe viniknuti potreba u vidmini peroralnih cukroznizhuyuchih zasobiv ta priznachennya insulinu Pri zastosuvanni metforminu z preparatami sulfonilsechovini neobhidnij retelnij kontrol koncentraciyi glyukozi v krovi Kombinovane zastosuvannya metforminu z insulinom rekomendovano provoditi u stacionari 2 108 Primitki 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