不同部位静脉注射对无痛人工流产术的影响

目的 :观察不同部位静脉注射对无痛人工流产术的影响。方法 :随机将 2 0 0例要求行无痛人工流产术的患者分成二组 ,一组静脉注射部位为手背静脉组 ,另一组静脉注射部位为肘部浅静脉 (贵要静脉或肘正中静脉 )组 ,观察静脉推注异丙酚时患者的注射部位有无疼痛症状。结果 :肘部浅静脉注射部位疼痛感明显轻于手背静脉 ,肘部浅静脉注射部位的麻醉起效时间快于手背静脉 ,两组差异有显著性 (P <0 0 5 )。结论 :选择肘部浅静脉注射异丙酚可减轻患者注射部位的疼痛 ,可在短时间内取得理想的麻醉效果。     

广西巴马长寿乡壮族长寿老人永生细胞库的建立

目的：建立广西巴马长寿乡壮族长寿老人永生细胞库。方法：使用EB病毒转化外周血B淋巴细胞方法。结果：建立了长寿者外周血细胞转化永生细胞株的方法，转化成功率77．4％。建立了65株长寿老人、直系亲属永生细胞株及长寿老人资料库和完整的细胞株档案。结论：广西巴马长寿乡壮族长寿老人永生细胞库的建立为永久保存细胞系及后续研究提供了必要的基础。     

不同剂量环孢素A对肾移植病人精液质量的影响

目的 :探讨不同治疗剂量环孢素A(CsA)对肾移植病人精液主要参数和精子形态学的影响。　方法 :对 18例应用不同治疗剂量CsA的肾移植病人的精液进行主要参数和精子形态学分析 ,并与 12例正常男性精液进行比较。　结果 :CsA剂量在 1.5～ 3.0mg·Kg-1·d-1及 3.1～ 5 .5mg·Kg-1·d-1时 ,病人精液的主要参数与正常男性精液比较差异无显著性 (P >0 .0 5 ) ,但病人正常形态精子百分率与正常男性相比差异有显著性 (P <0 .0 5 )。结论 :不同治疗剂量的CsA对肾移植病人的精液主要参数无明显影响 ,但对精子形态可能有一定的影响。     

Dislocation of an upper third molar into the maxillary sinus after a severe trauma: a case report

Abstract – Dental injuries are common following facial trauma. This article presents a rare injury: the dislocation of a third molar into the maxillary sinus after complex mandibular and maxillary tuberosity fractures. The possible mechanism and clinical treatment are discussed.     

Immature Megakaryocytes in the Mouse: Morphology and quantitation by acetylcholinesterase staining

Three types of immature megakaryocytes, detected by their morphological properties, have been characterized in bone marrow of normal C57BL/6 mice. Morphological classification of these cells was carried out by determining (1) presence and relative amount of acetylcholinesterase, (2) cell size, (3) nuclear/cytoplasm ratio, and (4) nuclear shape. The immature megakaryocytes were classified as: (A) cells distinguished by a round nucleus (10.6 +/- 1.1 mu diameter; mean +/- SEM), which had the highest nucleus / cytoplasm ratio and lowest content of acetylcholinesterase; (B) cells with an indented nucleus (13.0 +/- 1.9 mu diameter), which had increased acetylcholinesterase content and reduced nucleus/cytoplasm ratio compared to the round-nucleus cell type; and (C) lobed-nucleus cells (14.5 +/- 2.9 mu diameter), which showed further increase in acetylcholinesterase content and reduction in nucleus/cytoplasm ratio. Increased numbers of immature megakaryocytes were detected, indicating that a proportion of these cells are undetected using conventional staining techniques. Based on the observed alterations in size, acetylcholinesterase content, and nuclear complexity, it was concluded that these cells constitute part of a progressive maturation sequence intermediate between the progenitor cell (CFU-Mk) and mature easily recognizable megakaryocytes.     

‘The broken halo sign’: a fractured calcified ring as an unusual sign of traumatic rupture of the thoracic aorta

Two elderly patients, involved in separate motor vehicle accidents, sustained blunt chest injury resulting in rupture of their thoracic aortas. The initial chest radiographs showed the presence of a calcified ring fractured in two places with lateral displacement of a calcified fragment by haematoma. This ‘broken halo sign’ is a radiographic sign not previously well described in the literature. The presence of a disrupted aortic ring in the elderly patient, associated with the appropriate mechanism of injury, should alert the clinician to the potential diagnosis of traumatic rupture of the thoracic aorta (TRTA).     

Nitric oxide synthase inhibitor,nitro-iminoethyl-L-ornithine,reduces ischemia-reperfusion injury in rabbit skeletal muscle

Nitric oxide (NO), originally identified as the mediator of endothelial-dependent relaxation of vascular smooth muscle, is now known to also have cytotoxic effects under certain conditions. Thus, we have investigated the effects of inhibition of NO synthesis on ischemia/reperfusion injury in the rabbit rectus femoris muscle. Three and a half hours of ischemia and 24 hours of reperfusion resulted in a 56% loss of viability. In muscles receiving an infusion of the nitric oxide synthase inhibitor, L-NIO (30 μM), the loss of viability was reduced to 15%. Post-ischemic blood flow was increased in muscles receiving a saline infusion, whereas there was a marked decrease in blood flow for at least the first 60 minutes of reperfusion in muscles treated with L-NIO (30 μM). The increase in myeloperoxidase levels (indicative of neutrophil accumulation) following 24 hours of reperfusion was attenuated with L-NIO infusion by approximately 50% and the reperfusion-induced edema was also attenuated in L-NIO treated muscle. These findings suggest that endogenous NO production during ischemia/reperfusion injury may be deleterious to muscle survival. © 1994 Wiley-Liss, Inc.