“鸡皮疙瘩”，非典型肌肤恐怖片

有一套系列恐怖畅销书叫做《鸡皮疙瘩丛书》，意思是故事恐怖到让看书人身上起满鸡皮疙瘩。可是，当你并不觉得寒冷或害怕时身上依然出现鸡皮疙瘩，那就代表着一种并不算恐怖却令许多女生苦恼不已的皮肤问题——毛周角化症。[编者按]     

严重肺挫伤早期肺泡灌洗液表面活性蛋白变化与肺功能及形态学改变的关系

目的探讨严重肺挫伤及缺血再灌注后早期肺泡灌洗液（BALF）中表面活性蛋白（SP）-A、B、C、D动态变化与肺功能及肺形态学改变的关系。方法75只兔随机分为对照组（A）、肺挫伤组（B）及缺血再灌注组（C）。每组均为25只。检测各组0，1，2，3，4h肺功能变化及BAIF中SP—A、B、C、D含量百分比，进行组织病理学及电镜检查。结果与A组比较，B、C组sSP—A、B、C、D含量百分比明显减少（P〈0．01）；肺功能出现明显的损害且呈持续下降（P〈0．05）；肺泡Ⅱ型细胞电镜及病理学检查呈不同程度的炎症及变性改变。结论严重肺挫伤BALF中SP—A、B、C、D动态变化与肺功能及肺组织病理学改变一致。     

端粒酶在鳞状细胞癌和Bowen病组织中的表达

目的探讨端粒酶在皮肤鳞状细胞癌(SCC)及Bowen病(BD)病变组织中的表达及其临床意义。方法应用原位杂交方法检测30例皮肤SCC和30例BD病变组织中端粒酶基因hTR和hTERTmRNA的表达。结果在BD组织中hTR和hTERTmRNA呈弱表达,阳性率为23.33%和16.67%。在SCC中,hTR和hTERTmRNA的阳性率分别为86.67%和93.33%。其中Ⅰ、Ⅱ级SCC阳性率分别为82.35%和88.24%,无强阳性;Ⅲ、Ⅳ级SCC阳性率分别为92.31%和100%、强阳性表达率分别为69.23%和76.92%。SCC和BD两者比较差异有显著性(P<0.05)。SCCⅠ、Ⅱ级与Ⅲ、Ⅳ级比较差异有显著性(P<0.05)。结论端粒酶hTR和hTERTmRNA的表达增多是预测皮肤SCC的重要因素。     

勃起功能障碍可能是心血管疾病的信号

近期一项调查研究显示，出现勃起功能障碍的老年健康男子可能存在隐性心血管疾病。共有8063名55岁以上无心血管疾病的美国男子参加了该项队列研究，试验初始时4247人具有正常勃起功能。     

重组骨形态发生蛋白-2结合软骨下钻孔治疗犬关节软骨全层缺损的实验研究

目的 研究重组骨形态发生蛋白-2(rhBMP-2)结合软骨下骨钻孔治疗犬关节软骨全层缺损的可行性，为临床应用提供实验依据。方法 依照软骨缺损处理方法的不同将64侧股骨髁随机均分为4组：①结合组：软骨下骨钻孔 胶原海绵吸附rhBMP-2充填软骨缺损；②BMP组：胶原海绵吸附rhBMP-2充填软骨缺损；③钻孔组：单纯软骨下骨钻孔；④对照组：不作处理或单纯用胶原海绵填塞。术后2、4、8、12周取材观察其大体、光镜、透射电镜、免疫组织化学情况。结果 除对照组仅有纤维组织修复外，其余3组均有不同程度的软骨修复，但结合组的修复在组织细胞形态、超微结构、Ⅱ型胶原含量等方面均明显优于其他两组。结论rhBMP-2结合软骨下骨钻孔能有效修复犬膝关节软骨的全层缺损，该技术可行，有望在临床应用。     

99Tcm-MIBI动力学变化与大鼠缺血-再灌注心肌存活的相关性研究

目的探讨用99Tcm-甲氧基异丁基异腈(MIBI)动力学变化评价心肌存活的价值.方法15只离体Krebs-Henseleit(KH)液灌注的鼠心脏,随机分成3组对照组(5只),有葡萄糖的缺血-再灌注组(IR+G组,5只),无葡萄糖的缺血-再灌注组(IR-G组,5只).用含99Tcm-MIBI(14.8MBq)的KH液灌注,观察40min的摄取和清除.用肌酸激酶(CK)分析、氯化三苯四唑(TTC)染色和透射电镜(TEM)分析研究心肌损伤程度,用放射自显影(ARG)观察99Tcm-MIBI在心肌内的分布.结果99Tcm-MIBI的摄取[每克组织百分注射剂量率(%ID/g)]在IR+G组为(7.09±0.97)%ID/g,IR-G组为(6.64±0.68)%ID/g,对照组为(11.44±1.79)%ID/g,IR-G组与IR+G组相比摄取量差异无显著性(P＞0.05),IR-G组和IR+G组与对照组相比均显著降低(P＜0.05).IR-G组99m-MIBI清除分数为(72.75±9.89)%,远高于对照组[(20.68±1.92)%]和IR+G组[(21.03±3.68)%,P均＜0.05],对照组与IR+G组的差异无显著性.99Tcm-MIBI的40min清除末滞留率在IR-G组[(1.82±0.73)%ID/g]和IR+G组[(5.61±0.89)%ID/g]远小于对照组[(9.09±1.57)%ID/g,P＜0.05],IR-G组也远小于IR+G组(P＜0.001).CK分析、TFC染色和TEM分析证明IR-G组比IR+G组有更多的心肌损伤.通过TTC染色(r=0.84,P＜0.05)和CK分析(r=-0.97,P＜0.05)确定最终99Tcm-MIBI的活度与存活心肌量高度相关,通过ARG证实99Tcm-MIBI分布于鼠心肌细胞及间质内(光镜下).结论99Tcm-MIBI的清除对代谢状态敏感,可用于评价进行性心肌损伤.     

静吸复合全麻用于经DSA治疗颅内动脉瘤患者的麻醉

现将本院2006年1月-2006年12月54例经DSA全脑造影及栓塞术的麻醉处理总结如下。 1资料与方法 1．1一般资料 本组54例患者中，男29例，女25例，年龄11-70岁，ASAⅡ-Ⅲ级，急诊11例。术前昏迷5例，术中动脉瘤破裂2例。     

Concentric sclerosis (Baló): Morphometric and in situ hybridization study of lesions in six patients

Brain tissues from 6 patients with concentric sclerosis (Baló) were examined by in situ hybridization, immunocytochemistry, morphometry, and histological methods. The patients were 24 to 48 years old and had progressive cerebral symptoms and signs that lasted 15 to 100 days. Large demyelinative lesions, most frequent in the frontal white matter, contained alternating bands of demyelinated and partly myelinated white matter that were arranged in concentric or mosaic patterns. In the areas of demyelination, axons were relatively well preserved and there were perivascular inflammatory infiltrates. In 2 specimens, lesions contained regions with the characteristic appearance of actively demyelinating multiple sclerosis plaques. Oligodendroglial densities were highest in normal-appearing white matter, lower in partially myelinated areas, and lowest in demyelinated areas, which also contained many hypertrophic astrocytes closely associated with oligodendroglia. Messenger RNA levels for myelin-related proteins followed the same pattern; they were lowest in demyelinated areas, higher in partially myelinated areas, and highest in normal-appearing white matter beyond lesion margins. Our findings suggest that concentric sclerosis is a variant of multiple sclerosis, that oligodendroglial loss is important in the pathogenesis of demyelination, and that partially myelinated areas probably represent stages of ongoing myelin breakdown rather than remyelination of previously demyelinated areas.     

Study of pyogenic granuloma of the oral cavity]

Pyogenic granuloma is one of the diseases sometimes seen in otorhinolaryngology clinics. The clinical features of this disease are understood to be that the lesion is located in the oral cavity in the majority of cases that its causative agent is usually discovered and that it most likely grows as a malignant tumor. However, the entity of pathological diagnosis has not been established. Thirty-one cases of oral pyogenic granuloma, including 16 males and 15 females, are reported in this paper. The granuloma was located most frequently at the tongue, followed, in order, by the gingiva, buccal mucosa, hard palate, lip and oral floor. The period between the patient's first visit to our clinic and the onset of his/her complaint was variable. It was relatively shorter in those cases with the lesion at the gingiva or tongue as compared to other locations. The size of the lesion was smaller than 10 x 10 mm. We classified the pathological features into three patterns; granuloma type, hemangioma type, and intermediate type. Many cases of lesions located at the back of the tongue, buccal mucosa, or hard palate were of the hemangioma type, while many cases of lesions located at the top of the tongue, gingiva, or oral floor were of the granuloma type. We have the impression that pyogenic granuloma could be one of the purulent changes associated with benign oral tumors.