Mibvunzo Yemuenzaniso Inotsanangura Nezve B Lymphocytes uye Mhinduro Yemuviri Yekudzivirira Kurwadziwa
Pengantar
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Masisitimu emuviri wemunhu inzira yakaoma uye yakarongeka yekudzivirira zvirwere, zvakaita semabhakitiriya, mavhairasi, tupukanana, uye fungus. Chimwe chinhu chakakosha chesisitimu yemuviri inochinjika imasero eB (B lymphocytes), ayo anobatanidzwa mukugadzirwa kwemaantibody kuburikidza nemhinduro chaiyo yemuviri inochinjika. Muchinyorwa chino, chakanangana nekupa vadzidzi kunzwisisa nehunyanzvi, tichakurukura mimwe mienzaniso yezvinetso zvine chekuita nemalymphocyte eB uye mhinduro chaiyo yemuviri inochinjika.
Mubvunzo 1: B Maitiro Ekuita Kuti Lymphocyte Ishande
Mubvunzo:
Tsanangura maitiro ekushanda kweB lymphocyte mumaitiro ekudzivirira muviri kana muviri wasangana neantigen itsva. Ndeapi matanho anobatanidzwa uye zvinhu zvipi zvinobatanidzwa?
Kukurukurirana:
Maitiro ekushandiswa kweB lymphocyte mumhinduro yehumoral immune anosanganisira matanho akati wandei, ayo anogona kupfupikiswa seizvi:
1. Kusunga Antigen: MaB lymphocyte ane mareceptor akakosha anogona kusunga maantigen. Kana B lymphocyte ikasangana neantigen yakakodzera, antigen inosungwa neB cell receptor.
2. Kugadziriswa kweEndocytosis neAntigen: Antigen yakasungwa inozoiswa mukati memasero eB lymphocytes kuburikidza ne endocytosis. Mukati mesero, antigen inogadziriswa kuita zvidimbu zvepeptide.
3. Kuratidzwa kweAntigen: Zvidimbu zveAntigen peptide zvinoonekwa pamusoro peB lymphocytes nerubatsiro rweMajor Histocompatibility Complex (MHC) class II molecules.
4. Kudyidzana neHelper T Cells (CD4+): Kuratidzwa kweantigen uku kunozivikanwa nehelper T cells, iyo inosunga kumamorekuru eMHC class II nerubatsiro rweT-cell receptor (TCR). Kudyidzana uku kwakakosha pakukurudzirwa kwehelper T cells.
5. Kukurudzirana: Masero eT anobatsira anogadzira zviratidzo zvekukurudzirana uye anoburitsa ma cytokine anokurudzira kupatsanurwa nekupatsanurwa kwemasero eB kuita masero eplasma nemasero eB ekurangarira. Ma cytokine akadai seIL-4, IL-5, uye IL-6 ane basa guru mukuita uku.
6. Kugadzirwa kweAntibody: Masero eplasma anoumbwa achaburitsa uye anoburitsa ma antibodies chaiwo anogona kusunga uye kudzima hutachiona.
7. Kuumbwa kweMadziviriro Emuviri: Masero eMemory B anoumbwa uye anogara kwenguva yakareba. Anoshanda nekukurumidza uye zvinobudirira kana asanganazve neantigen imwe chete.
Mubvunzo 2: Mhando dzeMasoja Emuviri
Mubvunzo:
Dudza uye tsanangura mapoka mashanu makuru ema immunoglobulins (antibodies) anogadzirwa nemasero eB mumhinduro yekudzivirira muviri inoyerera. Ndeipi basa chairo rekirasi yega yega?
Kukurukurirana:
1. IgM (Immunoglobulin M): Antibody yekutanga inogadzirwa mushure mehutachiona. IgM inoshanda zvikuru mukuderedza hutachiona uye kusimudzira nzira yekare yekuwedzera.
2. IgG (Immunoglobulin G): Iyi ndiyo antibody yakawanda muropa. IgG inogona kuyambuka placenta, ichipa simba rekudzivirira mwana ari mudumbu. IgG inoita basa rakakosha mukuita kuti mwana asapindwe muropa, kudzivirira chepfu, uye kudzivirira kwenguva refu.
3. IgA (Immunoglobulin A): Inowanikwa panzvimbo dzemucosal dzakadai senzira yekufema, nzira yekugaya chikafu, uye mate. IgA inodzivirira utachiona kuti husapinde mukati menyama yemuviri nekudzivirira kunamira panzvimbo dze epithelial.
4. IgE (Immunoglobulin E): Inobatsira zvikuru mukurwisa zvirwere zvemuviri (allergy reactions) uye kudzivirira zvipembenene zvakaita semakonye. IgE inosungana nemasero emuviri (basophils) nemasero emuviri (mast cells), zvichikonzera kuburitswa kwehistamine nezvimwe zvinokonzera kuzvimba mumuviri.
5. IgD (Immunoglobulin D): Inoshanda semugamuchiri weantigen pamasero eB asina kupatsanurwa. Basa rayo harina kunyatsonzwisiswa, asi inofungidzirwa kuti ine chekuita nekutanga kushanda kwemasero eB.
Mubvunzo 3: Maitiro Ekuyeuka Kwemuviri Wemuviri
Mubvunzo:
Nzira yekurangarira immune system inoshanda sei muhumoral immune system, uye nei immune memory ichikosha pakubaiwa nhomba?
Kukurukurirana:
Kuyeuka kwemuviri kunoitika apo masoja emuviri anoyeuka "" kusangana neantigen yekare uye anopindura nekukurumidza uye zvinobudirira kana asanganazve nemuviri. Maitiro ekurangarira kwemuviri anosanganisira:
1. Kuumbwa kweMasero eMemory B: Mushure mekutanga kushanda, mamwe masero eB anosiyana kuita masero ememory B. Masero aya ane hukama hwakakura nemaantigen uye anoramba ari mumuviri kwenguva refu.
2. Kuwedzerwa Kwemhinduro Yechipiri: Kana asangana neantigen imwe chete kechipiri, masero ekurangarira B anogona kukurumidza kupatsanurana kuita masero eplasma anogadzira maantibody. Mhinduro iyi inowanzo kurumidza uye ine simba kupfuura mhinduro yekutanga.
3. Kubaiwa: Majekiseni akagadzirwa kuti aite seanotapukirwa pasina kukonzera chirwere, nokudaro achikurudzira kuumbwa kwendangariro dzemuviri. Kubudirira kwekubaiwa kunoenderana nekuumbwa kwendangariro dzemuviri; izvi zvinobvumira immune system kuti iite zvinobudirira kana ikadzoserwa kuhutachiona chaihwo.
Mhedziso
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Kunzwisisa maB lymphocytes uye mhinduro yemuviri inoyerera ndiyo musimboti wekudzidza nezve immunology uye kwakakosha pakugadzira nzira dzekurapa dzakadai sekubaiwa majekiseni uye immunotherapy. Nekupedzisa mienzaniso iyi nehurukuro, vaverengi vanofanira kunzwisisa basa uye mashandiro eB lymphocytes mukudzivirira muviri kubva kuhutachiona. Mhinduro chaiyo yemuviri inoyerera haingotidziviriri kubva kuhutachiona hwakananga chete asi, kuburikidza nepfungwa yekurangarira immune, inopa dziviriro inogara kwenguva refu uye inoenderera mberi.
