Correlation between antiplatelet resistance and recurrent cardiac ischemic events of patients with acute myocardial infarction

<正>Objective To evaluate the predictive value of anti-platelet resistance assessed by whole blood electronic impedance aggregometry(EIA) for the risk of recurrent cardiac ischemic events in patients with acute myocardial infarction(AMI) who underwent coronary stenting. Methods We enrolled     

建立小型猪Ⅱ度根分叉缺损模型的可行性

背景:牙槽骨缺损再生的前提是建立可有效评价牙周骨组织再生的实验性牙槽骨缺损动物模型,以往研究用于观察牙周组织病变的模型动物多选用狗,但操作难度大。目的:观察利用小型猪建立Ⅱ度根分叉缺损动物模型的可行性。方法:制备小型猪Ⅱ度根分叉缺损模型。将小型猪实验牙随机分为2组,模型组造模后不注射任何药物干预,对照组于造模后注射具有成骨作用的辛伐他汀凝胶。结果与结论:建模8周后大体、病理切片观察结果均显示模型组根分叉区空虚,对照组见新生牙槽骨长入。对照组可见较成熟的纤维组织以及增生的血管、大量成骨细胞、骨细胞,而模型组可见增生血管及少量成骨细胞。结果证实,以小型猪构建Ⅱ度根分叉缺损模型是可行的。     

颈部推拿对兔颈动脉粥样硬化重度狭窄病变的#br# 血管拉伸力学特性的影响 颈部推拿对兔颈动脉粥样硬化重度狭窄病变的血管拉伸力学特性的影响

目的　探讨颈部推拿手法对兔颈动脉粥样硬化（CAS）重度狭窄的血管拉伸力学特性的影响。 方法　45只新西兰兔随机分为颈椎旋转组（n=12）、推桥弓组（n=12）、模型对照组（n=12）和空白对照组（n=9），在颈椎旋转组、推桥弓组和模型对照组建立左侧CAS模型，并分别接受颈椎旋转手法、推桥弓手法干预3周，模型对照组和空白对照组不作手法干预。取左侧颈动脉进行单轴拉伸试验和病理观察，比较四组兔颈动脉的拉伸力学特性。 结果　（1）26只兔造模成功，其中颈椎旋转组、推桥弓组、模型对照组兔颈动脉的最大载荷显著高于空白对照组，同时最大应变显著低于空白对照组(P<0.05)；（2）颈椎旋转组兔颈动脉的弹性模量显著高于模型对照组、推桥弓组和空白对照组（P<0.05），而推桥弓组兔颈动脉的弹性模量与模型对照组相比差异无统计学意义(P>0.05)。 结论　动脉粥样硬化病变可致兔颈动脉血管拉伸力学特性下降，而颈部旋转推拿治疗可导致严重粥样硬化病变并重度狭窄的兔颈动脉弹性下降，为临床安全应用颈部推拿手法提供了参考。     

四种超硬石膏模型精度及抗弯强度的比较

背景:在临床上,超硬石膏广泛应用于制作固定义齿、大支架可摘义齿等需精细复制口腔情况的工作模型,其抗弯强度足够抵抗脱模时的力量不会发生模型牙体的折断.但当印模为硬质材料如聚醚橡胶印模等,存在牙体折断现象.目的:比较4种超硬石膏YCG,丹特纳,贺利氏,穗诚模型的尺寸精度及抗弯强度.方法:制作三单位固定桥和长方体(50 mm× 10 mm×5 mm)的金属模具,灌注4种超硬石膏模型,分别采用万能工具显微镜和万能试验机测量其尺寸精度及抗弯强度.结果与结论:YCG、丹特纳、贺利氏、穗诚4种超硬石膏近远中方向尺寸精度均值分别为:15.043,15.034,15.037,15.040 mm,颊舌方向为:7.020,7.015,7.019,7.019 mm,牙体长轴方向为:8.022,8.018,8.019,8.02 mm.4种超硬石膏模型抗弯强度均值分别为:15.687,13.000,22.521,18.675 MPa.4种石膏模型尺寸精度差异无显著性意义 (P > 0.05),但抗弯强度差异有高度显著性意义(P < 0.01).贺利氏石膏抗弯强度显著高于其他3种石膏 (P < 0.01),穗诚石膏抗弯强度显著高于丹特纳(P < 0.01).说明贺利氏石膏的抗弯强度是4种超硬石膏中最高者,穗诚的抗弯强度高于丹特纳,提示临床上应根据实际情况尽量选择抗弯强度大的石膏材料.     

Long‐term analysis of phase II studies of single‐agent lenalidomide in relapsed/refractory mantle cell lymphoma

Mantle cell lymphoma (MCL) is a type of non‐Hodgkin lymphoma (NHL) with aggressive disease characteristics resulting in multiple relapses after initial treatment. Lenalidomide is an immunomodulatory agent approved in the US for patients with relapsed/refractory MCL following bortezomib based on results from 3 multicenter phase II studies (2 including relapsed/refractory aggressive NHL and 1 focusing on MCL post‐bortezomib). The purpose of this report is to provide longer follow‐up on the MCL‐001 study (follow‐ups were 6.8 [NHL‐002], 7.6 [NHL‐003], and 52.2 [MCL‐001] months). The 206 relapsed MCL patients treated with single‐agent lenalidomide (25 mg/day PO, days 1 to 21 every 28‐days) had a median age of 67 years (63% ≥65 years), 91% with stage III/IV disease, and 50% with ≥4 previous treatment regimens. With a median follow‐up of X, the combined best overall response rate (ORR) was 33% (including 11% with complete remission [CR]/CR unconfirmed CRu). Lenalidomide produced rapid and durable responses with a median time to response of 2.2 months and median duration of response (DOR) of 16.6 months (95% CI: 11.1%‐29.8%). The safety profile was consistent and manageable; myelosuppression was the most common adverse event (AE). Overall, single‐agent lenalidomide showed consistent efficacy and safety in multiple phase II studies of heavily pretreated patients with relapsed/refractory MCL, including those previously treated with bortezomib.     

Abnormal Connection of the Ductus Venosus to a Dilated Coronary Sinus Imaged by Prenatal Echocardiography: Case Report

We describe a case of a fetus with an ectopic connection of the ductus venosus to a dilated coronary sinus that was diagnosed at ShengJing Hospital of China Medical University. A dilated coronary sinus was initially detected with prenatal echocardiography. Neither a persistent left superior vena cava nor an anomalous pulmonary venous connection was present. After comprehensive examination, we discovered that the ductus venosus had an abnormal course draining into the coronary sinus. The postnatal outcome of this fetus was good. Once a dilated coronary sinus is confirmed, further ultrasound evaluation should be performed to search for a potential cause.     

Serum Metabonomics of Articular Cartilage Destruction Induced by T-2 Toxin in Wistar Rats

正The molecular pathogenesis of T-2toxin-induced cartilage destruction has not been fully unraveled yet.The aim of this study was to detect changes in serum metabolites in a rat anomaly model with articular cartilage destruction.Thirty healthy male Wistar rats were fed a diet containing T-2 toxin(300 ng/kg chow)for 3 months.