Cov txheej txheem:
- Islet cell transplantation ua li cas?
- Islet cells tuaj qhov twg?
- Yuav ua li cas cov hlwb yog cov islets?
- Cov hlwb ua li cas los ntawm cov islets ntawm Langerhans?
Video: Islets ua li cas?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Cov kab mob pancreatic yog cov kob me me ntawm cov hlwb uas tsim cov tshuaj hormones uas tswj cov ntshav qabzib. Cov tshuaj hormones uas tsim nyob rau hauv pancreatic islets yog tso ncaj qha rau hauv cov hlab ntsha los ntawm tsib hom cell. Cov alpha hlwb tsim glucagon, thiab ua 15-20% ntawm tag nrho cov islet hlwb.
Islet cell transplantation ua li cas?
Txoj kev hloov pauv cov islet infusion yuav tsum ntxig ib lub raj nyias, hloov tau hu ua catheter los ntawm kev txiav me me hauv tus neeg txais lub plab sab sauv. Tus kws kho mob radiologist siv x-rays thiab ultrasound coj lub catheter mus rau hauv lub portal leeg ntawm daim siab.
Islet cells tuaj qhov twg?
Islets yog cov hlwb pom hauv pawg thoob plaws hauv lub txiav. Lawv yog tsim los ntawm ntau hom cell. Ib qho ntawm cov no yog beta hlwb, uas ua rau insulin. Insulin yog ib yam tshuaj uas pab lub cev siv cov piam thaj rau lub zog.
Yuav ua li cas cov hlwb yog cov islets?
Tib neeg islets muaj circa 30% glucagon-tsim α-cells, kwv yees li 60% insulin tsim β-hlwb, nrog rau qhov seem circa 10% ua los ntawm δ-cells. (somatostatin-producing), γ- los yog PP hlwb (pancreatic polypeptide-tsim), thiab ε-cells (ghrelin-producing) [9, 17, 18, 19, 20], nrog cov kab mob endocrine random faib …
Cov hlwb ua li cas los ntawm cov islets ntawm Langerhans?
Muaj tsib hom hlwb hauv islets ntawm Langerhans: beta cells secrete insulin; alpha hlwb secrete glucagon; PP hlwb secrete pancreatic polypeptide; delta hlwb secrete somatostatin; thiab epsilon hlwb secrete ghrelin.
Pom zoo:
James ua noj puas pom cov islets ntawm langerhans?
Cov islets ntawm Langerhans tsis tau pom los ntawm James Cook, vim lawv tsis yog thaj chaw thaj chaw - lawv yog ib feem ntawm peb lub cev. Cov islets ntawm pancreatic lossis islets ntawm Langerhans yog pancreatic hlwb uas tsim cov tshuaj insulin .
Cov qes twg hauv cov islets ntawm langerhans zais cov tshuaj insulin?
Muaj tsib hom hlwb hauv islets ntawm Langerhans: beta cells zais cov tshuaj insulin; alpha cells alpha cells alpha cells (α-cells) yog endocrine hlwb hauv pancreatic islets ntawm pancreas Lawv tsim txog li 20% ntawm tib neeg islet hlwb synthesizing thiab secreting peptide hormone glucagon, uas elevates cov piam thaj hauv cov ntshav.
Puas yog islets ntawm langerhans ib caj pas?
Islets ntawm Langerhans ua ua lub qog endocrine, thiab yog cov ntsiab lus ntawm tshooj no. Cov molecules sib txawv yog tsim los ntawm ntau hom cell ntawm cov islets ntawm Langerhans. Qhov tseem ceeb β-hlwb ntawm cov islets ntawm Langerhans tsim cov tshuaj insulin polypeptide .
Cov qog endocrine twg muaj cov islets ntawm langerhans?
Cov islets ntawm Langerhans, qhov endocrine ntawm pancreas, nyob ~ 4.5% ntawm qhov ntim ntawm tib neeg tus txiav, thiab lawv muaj peb qhov loj (α-, β. -, thiab δ-cells) thiab ob tug me (PP- thiab ε-cells) secretory cell hom . Cov qog twg hauv qab no muaj cov islets ntawm Langerhans?
Yuav sau li cas vim li cas thiab yog vim li cas?
Kev txhais ntawm yog vim li cas thiab (tus) yog li ntawd: yog vim li cas rau ib yam Nws piav qhia vim li cas thiab yog li ntawd ntawm tus nqi nce . Yuav ua li cas thiab yog vim li cas? Txhua qhov laj thawj thiab qhov laj thawj, ib yam li hauv Nws tau mus rau qhov laj thawj thiab yog li ntawm lub koom haum kev saws me nyuam txoj cai thiab cov txheej txheem.
