Menene platelets? Mene ne rawar da suka taka a cikin jiki? Wanne cututtuka platelets ya karu

Platelets ne kananan maras makaman nukiliya kafa abubuwa na jini. Suna da hannu a hemostasis (a hadaddun na halayen da nufin tsayawa zub da jini da kuma gargadi). Platelets ne zagaye ko m, a siffar. A diamita na cell ne tsakanin biyu da hudu microns.

A jini, platelets aka shirya a ganuwar ko a cikin jini. A karo na biyu idan, da Kwayoyin ne a wani Allaha jihar da kuma yana da wani faifai siffar. platelet kunnawa taimaka wa canza musu siffofin: Kwayoyin zama sphericity da kuma takamaiman tsari protuberances (pseudopodia). Ta hanyar wadannan matakai ne iya jini abubuwa manne ga juna ko da bango na jirgin ruwa da ciwon lalacewa. Wannan sabon abu ne da ake kira tari (mai danko tare). Platelets, haka ma, mallaka kaddarorin da mannewa (cohesion), degranulation (saki na abinda ke ciki), gudan jini karyata (ko cikakken rabuwa na rage jini gudan jini daga magani). A kan bãyan tẽkun, da Kwayoyin suna iya jure fibrinogen, wani abu ilimin aiki (serotonin), anticoagulants, da kuma rigakafi da gidaje (circulating).

By mannewa da kuma platelet tari samar da hemostasis a kananan-zamo tasoshin (Kwayoyin tara a shafin na lalacewa). Kamar yadda stimulants coalescence tsari ne adrenaline, thrombin, collagen, serotonin. Tare da sa hannu na thrombin ne da samuwar matakai (pseudopodia). Platelet katsin dauke da clotting dalilai (serotonin, peroxidase enzyme platelet fibrinogen, adenosine diphosphate (ADP), serotonin, platelet-samu ci gaban factor, von Willebrand factor).

A lokacin ya daina raina na jini gudan jini ya auku mannewa zuwa fibrin filaments da kuma sakin trombostenina wanda settles a kan su. A sakamakon haka ne wani hatimi da kuma dõmin karkatarwa da zaren, fiili a primary thrombus.

Analysis na jini platelets domin sanin coagulation sigogi. Dauke da wani al'ada maida hankali 180-320 dubu per milliliter.

Idan platelets ake kara, to, akwai thrombocytosis. Irin wannan yanayin iya nuna wani kullum cutar da wani dauke da kwayar cutar yanayi, marurai, jini cututtuka. Thrombocytosis iya haifar da samuwar jini clots a cikin tasoshin. Idan platelets ake kara, yana yiwuwa jiki ne dehydrated. Irin wannan yanayin da za a iya jawo da amai, rashin ruwa ci, stool cuta.

A taro na platelets a cikin jini iya bambanta dangane da lokaci na shekara, ko rana. Ragewan da cell abun ciki za a iya lura a cikin hailar lokaci ko ciki. Sau da yawa platelets ya karu bayan jiki exertion.

Thrombocytosis iya faruwa a duka biyu manya da yara. Kara platelet taro na iya zama na farko ko na biyu.

Yara thrombocytosis kafa bayan wariya na nakasar munanan.

Da farko ya karu platelets, yawanci a eritremii, kullum myeloid cutar sankarar bargo da sauran jini cututtuka. Kara taro na jini Kwayoyin da ake dangantawa da wani hanzari da rabo daga cikin precursor (megakaryocytes). Wannan tsari shi ne halayyar m canji.

Secondary thrombocytosis gano a cikin cututtuka tasowa ta hanyar kara samar da thrombopoietin (polypeptide hormone).

Platelets za a iya ƙara a ulcerative colitis, na huhu da tarin fuka, rheumatoid articular raunuka hali extrapulmonary da tarin fuka, amyloidosis, osteomyelitis, hanta cirrhosis da sauran kullum kumburi pathologies. Thrombocytosis ya auku a kan bango na ci gaban m marurai, hemorrhages, bayan wasu haihuwa lahani.