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V state ne hvataet ssylok na istochniki sm rekomendacii po poisku Informaciya dolzhna byt proveryaema inache ona mozhet byt udalena Vy mozhete otredaktirovat statyu dobaviv ssylki na avtoritetnye istochniki v vide snosok 25 sentyabrya 2014 Sincitij ili simplazm ot dr grech syn vmeste kytos kletka bukv sokletie tip tkani u zhivotnyh rastenij i gribov s nepolnym razgranicheniem kletok pri kotorom obosoblennye uchastki citoplazmy s yadrami svyazany mezhdu soboj citoplazmaticheskimi mostikami Myshechnaya kletka iz kotoroj sostoyat skeletnye myshcy zhivotnyh yavlyaetsya klassicheskim primerom kletki sincitiya Termin mozhet takzhe otnositsya k kletkam soedinyonnym specializirovannymi membranami s shelevymi soedineniyami Primerom sincitiya yavlyaetsya zarodyshevaya soedinitelnaya tkan mezenhima U cheloveka v vide sincitiya razvivayutsya predshestvenniki polovyh kletok oogonii u zhenskih embrionov i spermatogennye kletki u polovozrelyh muzhchin V oblasti embriogeneza slovo sincitij ispolzuetsya dlya oboznacheniya cenocitarnyh embrionov blastodermy bespozvonochnyh takih kak Drosophila melanogaster Fiziologicheskie primeryProtisty U protistov sincitii mozhno obnaruzhit u nekotoryh rizariev naprimer hlorarahniofitov plazmodioforid gaplosporidij i beskletochnyh slizevikov diktiostelid amebozoidov akrazid ekskavatoobraznyh i gaplozunov Rasteniya Nekotorye primery sincitiev kotorye voznikayut v processe razvitiya rastenij vklyuchayut Razvivayushijsya endosperm Neartikulirovannye laticifery Plazmodialnyj tapetum Nucellyarnyj plazmodij semejstva PodostemaceaeGriby Sincitij eto normalnaya kletochnaya struktura dlya mnogih gribov Bolshinstvo gribov semejstva Basidiomycota sushestvuyut v vide dikariona v kotorom nitevidnye kletki miceliya chastichno razdeleny na segmenty kazhdyj iz kotoryh soderzhit dva raznyh yadra nazyvaemyh geterokarionami Zhivotnye Skeletnye myshcy Klassicheskim primerom sincitiya yavlyaetsya obrazovanie skeletnyh myshc Krupnye skeletnye myshechnye volokna obrazuyutsya v rezultate sliyaniya tysyach otdelnyh myshechnyh kletok Mnogoyadernoe raspolozhenie kletok vazhno pri patologicheskih sostoyaniyah takih kak miopatiya kogda ochagovyj nekroz otmiranie chasti skeletnogo myshechnogo volokna ne privodit k nekrozu sosednih uchastkov togo zhe samogo skeletnogo myshechnogo volokna poskolku eti smezhnye uchastki imeyut svoj sobstvennyj yadernyj material Takim obrazom miopatiya obychno associiruetsya s takim segmentarnym nekrozom pri kotorom nekotorye iz vyzhivshih segmentov funkcionalno otrezany ot ih nervnogo snabzheniya iz za poteri nepreryvnosti nervno myshechnogo soedineniya Serdechnaya myshca Sincitij serdechnoj myshcy vazhen potomu chto on obespechivaet bystroe skoordinirovannoe sokrashenie myshc po vsej ih dline Potencialy serdechnogo dejstviya rasprostranyayutsya vdol poverhnosti myshechnogo volokna ot tochki sinapticheskogo kontakta cherez vstavlennye diski Nesmotrya na sincitij serdechnaya myshca otlichaetsya tem chto kletki ne dlinnye i mnogoyadernye Takim obrazom tkan serdca opisyvaetsya kak funkcionalnyj sincitij v otlichie ot istinnogo sincitiya skeletnyh myshc Gladkaya muskulatura Gladkie myshcy zheludochno kishechnogo trakta aktiviruyutsya kombinaciej kletok treh tipov gladkomyshechnyh kletok SMC intersticialnyh kletok Kahalya ICCs i receptora alfa faktora rosta trombocitov PDGFRa kotorye elektricheski svyazany i rabotayut vmeste kak funkcionalnyj sincitij SIP Osteoklasty Nekotorye immunnye kletki zhivotnogo proishozhdeniya mogut obrazovyvat agregirovannye kletki takie kak kletki osteoklastov otvetstvennye za rezorbciyu kosti Placenta Drugoj vazhnyj sincitij pozvonochnyh nahoditsya v placente placentarnyh mlekopitayushih Kletki embrionalnogo proishozhdeniya kotorye obrazuyut interfejs s materinskim krovotokom slivayutsya vmeste obrazuya mnogoyadernyj barer sincitiotrofoblast Veroyatno eto vazhno dlya ogranicheniya obmena migriruyushimi kletkami mezhdu razvivayushimsya embrionom i organizmom materi poskolku nekotorye kletki krovi specializirovany dlya togo chtoby imet vozmozhnost vstavlyatsya mezhdu sosednimi epitelialnymi kletkami Sincitialnyj epitelij placenty ne obespechivaet takogo puti dostupa ot materinskogo krovoobrasheniya k embrionu Steklyannye gubki Bolshaya chast tela geksaktinievyh gubok sostoit iz sincitialnoj tkani Eto pozvolyaet im formirovat svoi bolshie kremnistye spikuly isklyuchitelno vnutri svoih kletok Tegument Tonkaya struktura kozhnogo pokrova u gelmintov po sushestvu odinakova kak u cestod tak i u trematod Tipichnyj kozhnyj pokrov imeet tolshinu 7 16 mkm s otchetlivymi sloyami Eto sincitij sostoyashij iz mnogoyadernyh tkanej bez chetkih granic kletok Vneshnyaya zona sincitiya nazyvaemaya distalnoj citoplazmoj vystlana plazmaticheskoj membranoj Eta plazmaticheskaya membrana v svoyu ochered svyazana so sloem uglevodsoderzhashih makromolekul izvestnyh kak glikokaliks tolshina kotorogo variruetsya ot odnogo vida k drugomu Distalnyjcitoplazma soedinena s vnutrennim sloem nazyvaemym proksimalnoj citoplazmoj kotoraya yavlyaetsya kletochnoj oblastyu ili citonom ili perikari cherez citoplazmaticheskie trubki sostoyashie iz mikrotrubochek Proksimalnaya citoplazma soderzhit yadra endoplazmaticheskij retikulum kompleks Goldzhi mitohondrii ribosomy otlozheniya glikogena i mnogochislennye vezikuly Samyj vnutrennij sloj ogranichen sloem soedinitelnoj tkani izvestnym kak bazalnaya plastinka Za bazalnoj plastinkoj sleduet tolstyj sloj myshc Patologicheskie primerySincitij vyzvannyj infekciej VPG 1 v kletkahVirusnaya infekciya Sincitij takzhe mozhet obrazovyvatsya kogda kletki inficirovany opredelyonnymi tipami virusov v chastnosti VPG 1 VICh MeV SARS CoV 2 i pnevmovirusami naprimer respiratorno sincitialnym virusom RSV Eti sincitialnye obrazovaniya sozdayut harakternye citopaticheskie effekty kogda nablyudayutsya v permissivnyh kletkah Poskolku mnogie kletki slivayutsya vmeste sincitii takzhe izvestny kak mnogoyadernye kletki gigantskie kletki ili polikariocity Vo vremya infekcii virusnye slitye belki ispolzuemye virusom dlya proniknoveniya v kletku transportiruyutsya na poverhnost kletki gde oni mogut vyzvat sliyanie membrany kletki hozyaina s sosednimi kletkami Reoviridae Kak pravilo virusnye semejstva kotorye mogut vyzyvat sincitij zaklyucheny v obolochku potomu chto belki virusnoj obolochki na poverhnosti kletki hozyaina neobhodimy dlya sliyaniya s drugimi kletkami Nekotorye predstaviteli semejstva Reoviridae yavlyayutsya zametnymi isklyucheniyami iz za unikalnogo nabora belkov izvestnyh kak svyazannye so sliyaniem malye transmembrannye FAST belki Obrazovanie sincitiya inducirovannoe reovirusom ne vstrechaetsya u lyudej no vstrechaetsya u ryada drugih vidov i vyzyvaetsya fuzogennymi ortoreovirusami K etim fuzogennym ortoreovirusam otnosyatsya ortoreovirus reptilij ptichij ortoreovirus ortoreovirus zaliva Nelsona i ortoreovirus babuina VICh VICh zarazhaet helpernye CD4 T kletki i zastavlyaet ih vyrabatyvat virusnye belki vklyuchaya slitye belki Zatem kletki nachinayut vyvodit poverhnostnye glikoproteiny VICh kotorye yavlyayutsya antigennymi Obychno citotoksicheskaya T kletka nemedlenno nachinaet vvodit limfotoksiny takie kak perforin ili granzim kotorye ubivayut inficirovannuyu T helpernuyu kletku Odnako esli T helpernye kletki nahodyatsya poblizosti receptory gp41 VICh otobrazhaemye na poverhnosti T helpernoj kletki budut svyazyvatsya s drugimi podobnymi limfocitami Eto privodit k tomu chto desyatki T helpernyh kletok slivayut kletochnye membrany v gigantskij nefunkcionalnyj sincitij chto pozvolyaet virionu VICh ubivat mnogo T helpernyh kletok zarazhaya tolko odnu Eto svyazano s bolee bystrym progressirovaniem zabolevaniya Svinka Virus epidemicheskogo parotita ispolzuet belok HN dlya prikrepleniya k potencialnoj kletke hozyainu zatem slityj belok pozvolyaet emu svyazyvatsya s kletkoj hozyainom Zatem HN i slitye belki ostayutsya na kletochnyh stenkah hozyaina zastavlyaya ego svyazyvatsya s sosednimi epitelialnymi kletkami COVID 19 Mutacii v variantah SARS CoV 2 soderzhat varianty spajkovyh belkov kotorye mogut usilivat obrazovanie sincitiya Proteaza TMPRSS2 neobhodima dlya obrazovaniya sincitiya Sincitij mozhet pozvolit virusu rasprostranyatsya neposredstvenno na drugie kletki zashishennye ot nejtralizuyushih antitel i drugih komponentov immunnoj sistemy Obrazovanie sincitiya v kletkah mozhet byt patologicheskim dlya tkanej Tyazhelye sluchai COVID 19 svyazany s obshirnym povrezhdeniem legkih i nalichiem inficirovannyh mnogoyadernyh sincitialnyh pnevmocitov Virusnye i kletochnye mehanizmy reguliruyushie obrazovanie etih sincitij nedostatochno izucheny no membrannyj holesterin predstavlyaetsya neobhodimym Sincitij po vidimomu sohranyaetsya dolgo polnoj regeneracii legkih posle tyazhelogo grippa ne proishodit pri COVID 19 Sm takzheV Vikislovare est statya sincitij Plazmodij SimplastWillmer P G 1990 Invertebrate Relationships Patterns in Animal Evolution Cambridge University Press 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