105Changes in Nitric Oxide Levels After Deep Dermal injury in the Female,Red Duroc Pig (FRDP)

Introduction : Hypertrophic scar is a devastating sequel to burns and other tangential skin injuries. It follows deep dermal injuries and does not occur after superficial injuries. Nitric oxide (NO) plays many important roles in wound healing from inflammation to scar remodeling. Studies have shown that expression of nitric oxide synthase and nitric oxide production are decreased in human hypertrophic scar. However little is known about NO involvement in the early stages of hypertrophic scarring, because of the lack of an animal model. It was recently reported that the female red Duroc pig (FRDP) makes thick scar, which is similar to human hypertrophic scar. We hypothesized that NO production in wounds on the female, red Duroc pig is similar to that of human hypertrophic scar and that NO involvement in deep wounds is different from that in superficial wounds. Methods : Superficial (0.015” to 0.030”) and deep (0.045” to 0.060”) wounds were created on the backs of four FRDPs. Biopsies were collected at weeks 1.5, 4, 8 and 21 post wounding including samples of uninjured skin. Nitric oxide levels were measured with the Griess reaction assay and normalized with tissue protein level. Results : Superficial wounds healed with an invisible scar whereas the deep wounds healed with scar resembling mild hypertrophic scar. The thickness of the scars from the deep wounds was significantly greater than uninjured skin and healed superficial wounds (p < 0.01). NO levels were increased at 1.5 weeks in deep wounds compared to superficial wounds and uninjured skin (p < 0.05). At 8 weeks, NO levels in deep wounds had returned to the level of uninjured tissue and superficial wounds. By 21 weeks, NO levels had decreased significantly when compared to superficial wounds (p < 0.01). There were no differences in NO levels between uninjured skin and superficial wounds at any time point (p > 0.05). Conclusions : NO production is similar in late, deep wounds on the female, red Duroc pig to that reported in the literature for human hypertrophic scar further validating this animal model. NO production is quite different after deep wounds as compared to superficial wounds in the FRDP. Early elevation in nitric oxide production might account for excessive inflammation in deep wounds that become thick scars in the FRDP. Nitric oxide regulators and effects at early stages of scar formation should be elucidated further and the FRDP appears to be a useful model.     

1例乙型慢性重型病毒性肝炎合并真菌性肺炎的治疗护理

两性霉素B毒性大，不良反应多见，但它又是治疗危重深部真菌感染的有效药物。该药对严重肝病病人禁用，2004年我病区收治了1例病毒性肝炎乙型慢性重型（早期）合并真菌性肺炎的病人。医生在权衡利弊慎重考虑后作出对该病人使用两性霉素B的决定。现报告该病人使用两性霉素B的治疗与护理情况。     

门诊老年冠心病患者用药知识需求的调查

冠心病是老年人的常见病、多发病,致残或死亡率已居常见病之首[1]。目前,药物治疗仍是冠心病二级预防的主要措施。近年来研究发现,83·3%的冠心病患者无法正确使用药物,用药依从性差[2]。分析原因,87%的门诊老年慢性病患者包括冠心病患者在内,主观不遵医用药是由于在用药过程中出现诸多用药问题时得不到相关知识信息支持所导致[3]。另外,通过调查证实冠心病患者对用药知识的需求亦居前列,尤其是出院后用药知识是首要需求[2,4-6]。由此表明,对门诊老年冠心病患者进行用药知识教育十分必要。依据健康教育学方法,分析患者的教育需求是制定教育…     

纵隔软组织肿瘤23例临床病理分析

本科手术治疗纵隔软组织肿瘤２３例，占同期手术治疗纵隔肿瘤３９０例的５．９％，年龄３５岁以下者１７例，占７３．９％。男女之比为４．８：１（１９／４），本病的临床及Ｘ线表现缺乏特异性，确诊有赖于术后病理学检查。本组中良性肿瘤１５例（６５．２％），恶性肿瘤８例（３４．８％），手术治疗２４例次，肿瘤切除率为９１．７％（２２／２４），手术为首选的治疗方法。     

妊娠糖尿病患者孕晚期血清LRG1、CCL2水平与产后血糖转归的相关性分析

目的 探究妊娠糖尿病（GDM）患者孕晚期血清富亮氨酸α2-糖蛋白1(LRG1）、趋化因子配体2(CCL2）水平与产后血糖转归的相关性。方法 选取2019年6月—2021年6月衡水市人民医院收治的98例GDM孕晚期患者为研究对象,根据患者产后6周的口服葡萄糖耐量试验（OGTT）结果分为异常组42例和恢复组56例。收集两组患者的基线资料,采用酶联免疫吸附试验（ELISA）检测血清LRG1、CCL2水平;采用Pearson法分析血清LRG1、CCL2水平与产后血糖及胰岛素指标的相关性;采用多因素一般Logistic回归分析影响产后血糖异常的因素。结果 异常组患者孕前体质量指数（BMI）高于恢复组（P<0.05）;异常组患者孕晚期及产后血清LRG1、CCL2水平均高于恢复组,且恢复组产后血清LRG1、CCL2水平低于孕晚期（P<0.05）;异常组患者孕晚期及产后甘油三酯（TG）、空腹血糖（FPG）、餐后1 h血糖（1 hPG）、餐后2 h血糖（2 hPG）、空腹胰岛素（FINS）及胰岛素抵抗指数（HOMA-IR）均高于恢复组（P<0.05）,异常组患者产后FPG、FINS、H...     

呼出气氢测定试验对飞行人员乳糖酶缺乏症的研究

对66名汉族飞行人员进行乳糖呼出气氢测定试验,乳糖吸收不良的发生率为83.3％,其中乳糖不耐受者占34.6％;与一般汉族人群无明显差别。对10名确定为中度以上乳糖吸收不良的飞行人员进行250ml鲜牛奶的试验结果,有50％呼出气氢含量在正常范围,并无一例出现胃肠道症状。提示较长期食用牛奶未能使乳糖酶缺乏状态发生改变,但每日食用适量牛奶属合理营养。     

Divergent expression and localization of aquaporin 5, an exocrine-type water channel,in the submandibular gland of Sprague-Dawley rats

By Western blot analysis, the expression level of aquaporin (AQP) 5 in the submandibular gland (SMG) was found to be different among individual rats of the Sprague-Dawley (SD) strain. Such differences were observed for AQP5 but not for AQP1 and consequently the SD strain was divided into two groups, one expressing a high level of AQP5 and the other a low one. The difference in average intensity of expression between the two groups was more than twofold. Immunohistochemical analysis of the SMG demonstrated that the AQP5 protein was localized in the basal and apical/lateral plasma membrane of acinar cells in rats expressing the high level of AQP5. In the rat expressing the low level, however, this channel protein was localized strongly in the apical/lateral plasma membrane, but only very weakly in the basal membrane of the acinar cells. Such a diverse localization of AQP5 was confirmed by Western blotting as well. Breeding between brother and sister was repeated for two times within high expressers and low expressers to obtain the third generation progenies (F2); the AQP5 level of the SMG in the third generation (F2 rats) from high expressers was significantly higher than the F2 from low expressers. Our present study suggests the existence of genetic variation in the expression of a water channel protein, AQP5, in rats.     

用足孕期畸形学指标评价毫米波辐射对小鼠植入后胚胎生长发育的影响

本实验用频率36.11GHz、功率密度为10.0mW/cm~2的毫米波,在小鼠怀孕6～15d时进行2h/d的照射,在孕期终了用足孕期畸形学指标进行分析。结果显示,毫米波照射可导致足孕期孕鼠体重、体重增加数和胎鼠体重的明显降低,胎盘重明显减轻,足孕时胎仔身长及尾长均减短,照射未导致孕鼠脑、肝、肾、卵巢等脏器重量(右肾除外)及脏器/体重比值、活胎数、死胎数、吸收数等指标发生明显变化,亦未导致胎鼠外表发生畸形、内脏发生畸形,或骨骼畸形增多。     

利用密度的指数原理优化X射线中骨骼的边缘

利用指数衰减原理来抑制 x射线图像中小密度组织对骨骼边缘的影响 ,利用该方法很容易使用直方图原理提取出骨骼的边缘和内部结构变化的二值图 ,并有效地抑制了背景对骨骼边缘的影响 ,结合 canny算子的结果 ,可以有效地提取人体复杂结构中骨骼的边缘。     

人白细胞介素12在哺乳动物细胞中的稳定表达及其生物活性的研究

目的采用遗传基因工程方法获得具有生物活性的人白细胞介素12,探索其治疗肿瘤和慢性肝炎的可行性。方法采用已克隆的国人IL-12基因序列,利用内部核糖体切入位点(IRES)完成IL-12P35、P40双亚基共表达载体的构建,通过转染CHODHFR缺陷细胞,双抗夹心ELISA法筛选阳性克隆,MTX加压扩增,PCR检测其基因整合,T淋巴细胞增殖和诱生γ干扰素实验检测其生物活性。结果获得了稳定高效表达人IL-12的工程细胞系,表达产物为70×103左右的糖蛋白。结论本研究得到的基因重组人IL-12具有良好的生物活性,有强的诱导产生γ干扰素的能力和诱导活化T淋巴细胞增殖能力。