CAJ | 학술논문

研究通过大量临床糖尿病病人胰岛细胞抗体(IsletCellAntibody,ICA)检测，发现ICA阳性反应有两种完全不同的形态学表现：弥漫型ICA和边缘型ICA。经免疫组织化学双标技术鉴别，弥漫型ICA可同时有着染α细胞和β细胞，边缘型ICA则仅着染α细胞。这种只着染α细胞的ICA国内外尚未见有报道。为探讨其在糖尿病发病中所起的作用，选择1型糖尿病(1-DM)的弥漫型ICA和边缘型ICA各3例，另选正常人3例作对照。用患者血清分别以2、4、8小时三个时相与分离并贴壁生长的正常人胰岛细胞孵育后，进行原位细胞凋亡检测。结果发现，弥漫型ICA、边缘型ICA均可导致胰岛细胞产生凋亡，其中弥漫型ICA使β细胞及α细胞出现凋亡；边缘型ICA使α细胞产生凋亡。这一结果提示：糖尿病发病机制除与分泌胰岛素的β细胞有密切关系的经典途径之外，可能还与分泌胰高血糖素的α细胞存在某种关系。
연구통과대량림상당뇨병병인이도세포항체(IsletCellAntibody,ICA)검측，발현ICA양성반응유량충완전불동적형태학표현：미만형ICA화변연형ICA。경면역조직화학쌍표기술감별，미만형ICA가동시유착염α세포화β세포，변연형ICA칙부착염α세포。저충지착염α세포적ICA국내외상미견유보도。위탐토기재당뇨병발병중소기적작용，선택1형당뇨병(1-DM)적미만형ICA화변연형ICA각3례，령선정상인3례작대조。용환자혈청분별이2、4、8소시삼개시상여분리병첩벽생장적정상인이도세포부육후，진행원위세포조망검측。결과발현，미만형ICA、변연형ICA균가도치이도세포산생조망，기중미만형ICA사β세포급α세포출현조망；변연형ICA사α세포산생조망。저일결과제시：당뇨병발병궤제제여분비이도소적β세포유밀절관계적경전도경지외，가능환여분비이고혈당소적α세포존재모충관계。
This study found that there were two conspicuous and differentpatterns in morphological distribution of the ICA (Islet Cell Antibody) positive reactive cells: the diffuse pattern and the peripheral pattern, this is on the basis of detecting a great deal of ICA from diabetes mellitus patients. Identification by double-labeling immunohistochemical techniques showed that both α-and β-cells in pancreatic islet were stained in the diffuse pattern, but only α-cells were stained in the peripheral pattern. These α-cells stained by only ICA were neither reported nor in China and abroad. In order to study the role of ICA on the onset of diabetes mellitus, we particularly Chose the sera from each 3 cases in the I-DM (type I-diabetes mellitus) patients with the diffuse and peripheral patterns ICA, and that of another 3 cases of normal persons as controls, and detected in situ cell apoptosis of isolated islet cells of normal persons after incubation with the patient's serum of three phases of 2、4、8 hours respectively. Our results showed that both diffuse pattern and the peripheral pattern could induce islet cells to occur apoptosis, among which the diffuse pattern induced more β cells and a small amount of α cells gaving rise to apoptosis; while the peripheral pattern mainly α cells. In conclussion, These results indicate that the pathogenic mechanism of diabetes mellitus may have some correlation with glucagon secution of α cells in addition to the classical mechanism of insulin secretion by β cells.