大鼠原代肝细胞的培养及鉴定

目的:探讨体外大鼠肝细胞的分离培养及纯化的方法。方法:采用胶原酶Ⅳ消化组织块法分离新生大鼠肝细胞,对大鼠肝细胞进行纯化、培养,并采用免疫组织化学方法对其进行鉴定。结果:培养24 h,有部分细胞贴壁,48 h有大量细胞贴壁,但含有较多杂细胞。经过4~5次传代后,细胞形态一致,可见许多双核细胞和多核细胞。采用抗大鼠细胞角蛋白(ck-18)的特异抗体进行免疫细胞化学鉴定,经SP染色DAB显色后,阳性着色部位在胞浆呈棕黄色颗粒,阴性对照未见着色。结论:成功地体外培养了大鼠肝细胞并对其进行了鉴定,为进一步的实验研究奠定了基础。     

宫内外复合妊娠的诊断与治疗

宫内外复合妊娠(heterotopic pregnancy,HP)是一种病理性妊娠疾病,在自然妊娠中较为罕见,但随着辅助生殖技术的发展,其发病率逐渐增加.输卵管因素和辅助生殖技术的应用是HP发病的主要因素.经阴道超声和血人绒毛膜促性腺激素(human chorionic gonadotropin,hCG)值的联合应用可...     

单绒毛膜双羊膜囊双胎减胎的研究进展

与辅助生殖技术(ART)相关的单卵双胎(MZT)的发生率不断升高。双胎妊娠绒毛膜性的判定可对其风险进行分层。单绒毛膜双羊膜囊(MCDA)双胎围生期具有高发病率和死亡率,其各种减胎方法各有利弊。传统的阴道超声引导下的胚胎组织穿刺抽吸术具有局限性,现主要采用血管闭塞技术用于对MCDA双胎进行选择性减胎,比如脐带双极电凝术和射频消融术等。减胎术的并发症主要有未足月胎膜早破(PPROM)和早产,但有关MCDA的各种减胎方法的时机、适应证及预后等尚未形成统一的标准,故对于减胎术后的新生儿必须进行长期的随访。     

卵巢子宫内膜异位囊肿患者穿刺取卵和IVF-ET后妊娠合并盆腔脓肿一例并文献复习

报告1例在穿刺取卵和体外受精-胚胎移植(IVF-ET)术后发生盆腔脓肿的卵巢子宫内膜异位囊肿患者.该患者24岁,不孕4年,发现多囊卵巢综合征1年,曾采取阴道卵巢囊肿穿刺术.给予达英-35调经治疗1个周期,完善术前检查后行助孕治疗,穿刺取卵、IVF-ET后10 d,腹痛伴发热,抗炎治疗无效后急诊行腹腔镜探查术,术中诊断盆...     

Electrical Potentiometry with Intraoral Applications

Dental implants currently in use are mainly made of titanium or titanium alloys. As these metallic elements are immersed in an electrolytic medium, galvanic currents are produced between them or with other metals present in the mouth. These bimetallic currents have three potentially harmful effects on the patient: micro-discharges, corrosion, and finally, the dispersion of metal ions or their oxides, all of which have been extensively demonstrated in vitro. In this original work, a system for measuring the potentials generated in vivo is developed. Specifically, it is an electrogalvanic measurements system coupled with a periodontal probe that allows measurement of the potentials in the peri-implant sulcus. This device was tested and verified in vitro to guarantee its applicability in vivo. As a conclusion, this system is able to detect galvanic currents in vitro and it can be considered capable of being employed in vivo, so to assess the effects they may cause on dental implants.     

Changes in Facial Morphology Using Poly-L-lactic Acid Application According to Vector Technique: A Case Series

BackgroundThe search for nonsurgical cosmetic procedures has increased considerably in recent years. A new injection technique, using vector direction, has shown good results in improving facial aesthetics but to date has only been performed with hyaluronic acid which can be associated with a risk of vascular complications. Therefore, in clinical practice, it would be interesting to assess this technique with a liquid product already widely used in the facial region, and at the same time bring the same aesthetic benefits, but with greater durability than hyaluronic acid.ObjectiveTo investigate the improvement of facial morphology in patients with facial flaccidity submitted to the vector technique using poly-L-lactic acid (PLLA) (Sculptra^®; Galderma, Lausanne, Switzerland).Case SeriesHere we report the outcomes of three cases of female patients, aged between 41 and 55 years, seeking improvement of facial flaccidity. In each patient, PLLA was applied in the posterior temporal region as a bolus, in three points, with a 2-mL injection in the upper region, 1.5mL in the midpoint, and 1.5mL at the bottom point. Each of the three patients showed an improvement in face morphology, with concomitant improvement in the support and stretching of the face and improvement in skin sagging in the upper, middle, and bottom regions.ConclusionThe vector technique with PLLA is a viable alternative for the treatment of patients with facial skin flaccidity, providing harmonious and progressive improvement in the face morphology.     

前列腺癌组织中的端粒酶活性表达

目的 探讨前列腺癌组织中端粒酶活性表达与前列腺癌某些生物学行为的着急。方法 采用端粒扩增文件－酶（ＴＲＡＰ＿ＥＬＩＳＡ）测定前列腺癌组织中端粒酶活性。结果 １０例正常前腺组织无端粒酶活性。１５例前腺腺癌组织中１３你检出端粒酶活性,阳性率８６％。端粒酶活性与肿瘤分化程度相关。１５例良性前列腺增生组织中４例检出端粒酶活性,阳性率为２６％,其水平显著低于肿瘤组织。结论 端粒酶活性与前列腺癌的生物学行为有     

实时组织弹性成像与二维灰阶超声诊断结节性甲状腺疾病的对照研究

目的 探讨实时组织弹性成像与二维灰阶超声在诊断结节性甲状腺疾病中的价值.方法 以病理诊断为金标准,对比分析实时组织弹性成像与二维灰阶超声诊断结节性甲状腺疾病的准确性.结果 实时组织弹性成像诊断结节性甲状腺疾病的敏感性、特异性和准确性分别为88.03％、88.23％、88.09％.二维灰阶超声诊断结节性甲状腺疾病的敏感性、特异性和准确性分别为52.94％、71.64％、73.81％.结论 实时组织弹性成像诊断结节性甲状腺疾病的准确性高于二维灰阶超声,但两者结合可望提高良恶性病变诊断的准确性.     

Meek植皮技术的临床应用

目的 研究Meek植皮技术在临床中的应用。方法 用Meek植皮技术治疗16例烧伤面积〉30％患者,临床观察皮片扩张率,植皮成活率,手术时间,住院费用,愈合后疤痕,同传统邮票皮移植方法为对照组进行比较。结果 16例患者应用Meek微型皮片移植,植皮成活率为〉95％,各项观察指标同对照组相比有显著差异性（P〈0．01）。结论 Meek植皮技可节省皮源、缩短手术时间、缩短住院时间和节省住院费用。该技术操作简单,是大面积深度烧伤治疗中较理想的植皮方法之一。