简介:为观察国产格列美脲的降血糖作用及对胰岛素分泌的影响,将大鼠、家兔灌服格列美脲2.5mg/kg、5mg/kg、10mg/kg后,通过测血糖、耐糖试验和测血浆胰岛素水平研究格列美脲的作用。结果显示,给药后血糖均明显降低(P<0.01),且药效强于格列本脲;大鼠灌服2.5mg/kg格列美脲已能明显对抗糖负荷引起的血糖升高,随给药剂量升高对抗作用增强;家兔灌服该药上述三种剂量后亦明显对抗糖负荷引起的血糖升高;大鼠和家兔灌服格列美脲后血清胰岛素水平上升,其升高程度与给药剂量正相关。以上结果表明格列美脲能刺激胰岛并增加胰岛素的分泌,对比实验表明格列美脲促胰岛素分泌作用强于格列本脲。
简介:糖尿病是一种以糖代谢紊乱为主要症状的内分泌系统疾病.1980年,世界卫生组织将糖尿病分为胰岛素依赖型糖尿病和非胰岛素依赖型糖尿病(Noninsulin-dependentdiabetesmitus,NIDDM,又称2型糖尿病).目前,全球糖尿病患者超过1.2亿,其中90%为NIDDM.除胰岛素外,口服降血糖药也可用于NIDDM的治疗.在传统的口服药物中主要有磺酰脲类(如:甲苯磺丁脲)、双胍类(如:苯乙双胍)、α-葡萄糖苷酶抑制剂(如:阿卡波糖).随着对糖尿病发病机制与治疗的深入研究,目前已有不少新型的抗糖尿病药物用于临床,其中餐时血糖调节剂是20世纪90年代研究进展较快、最引人关注的药物之一.
简介:ToinvestigatestheclinicalsingsandthepathologymorphologicchangesofthehearttissueofacasewiththecardiacWegener'sgranulomatosis.MethodsTheclinicalwithwasexaminedECGandlaboratory.ThepathologysamplesweresectionedroutineparaffinandstainedwithHE、PAS、AB-PASandcellulosestainingandobservedwithlightmicroscope.ResultsTheECGwasmanifestedacutemyocardialinfarctionintheleftlateralwallandthebloodexaminationwereoftheheart,andthebloodexaminationweremanifestedliftpedigreefermentofmyocardium.Thepathologysectionsweremanifestednecrosislargeareaperforationwallofthemyocardialandbecamegranulomadiffusible.Endocarditis,necroticvesselitisandthrombuscouldbefoundandthatthecoronaryisnotembolism.Similarlesionscouldbefoundandaliketotheheartintheleftlungparenchymaandtheperipheralzoneoftracheaandbloodvessel.HistochemicalexaminationwithPASandAB-PASshowedcryptococcusnegativeintheheartandlungs.Cellulosestainingwaspositivereactioninthevascularwall.Antineutrophilcytoplasmicantibody(ANCA)wasnegativeinthebloodfromtheheart.ConclusionCardiacWegener'sgranulomatosisisrare.Clinicalsingstheeversosimilartoacutemyocardialinfarctionandthatisnotallbutdifferentiationandprognosisandunfavorableoftheevercuch.