Treatment of Acquired Bilateral Nevus of Ota-Like Macules (Hori''s Nevus) with a Combination of the 532 nm Q-Switched Nd:YAG Laser Followed by the 1,064 nm Q-Switched Nd:YAG Is More Effective: Prospective Study

BACKGROUND: Acquired bilateral nevus of Ota-like macules (Hori's nevus) is a common dyschromatosis among Asian women. Q-switched lasers have been used successfully as a treatment modality. OBJECTIVE: The purpose of this study was to compare the efficacy of using the Q-switched 532 nm neodymium:yttrium-aluminum-garnet (Nd:YAG) laser followed by the 1,064 nm laser versus the Q-switched 1,064 nm Nd:YAG laser alone in the treatment of Hori's nevus. METHODS: This is a prospective left-right comparative study. Ten women with bilateral Hori's nevus were recruited and treated with a combination of the Q-switched 532 and 1,064 nm Nd:YAG lasers on the right cheek and the Q-switched 1,064 nm Nd:YAG laser alone on the left cheek. Only one laser treatment session was performed. The degree of pigmentation was objectively recorded with a mexameter. Subjective assessment was made by both patients and two blinded, nontreating dermatologists. RESULTS: At 6 months, there was a statistically significant difference (p = .009) of 35.10 points using objective mexameter measurements between the two sides, favoring the side treated with a combination of 532 and 1,064 nm laser treatment. Subjective grading by the patients and blinded dermatologists also confirmed that combination therapy was more successful after one treatment. Although combination treatment had a higher incidence of mild postinflammatory changes, this disappeared within 2 months. CONCLUSIONS: Concurrent use of the Q-switched 532 nm Nd:YAG laser in combination with the 1,064 nm laser is more effective in pigment clearance than the Q-switched 1,064 nm Nd:YAG laser alone for Hori's nevi.     

氟伐他汀对缺血性脑卒中患者的疗效观察及护理措施

Objective To explore the effect and nursing main points of fluvastatin on the patients with cerebral arterial thrombosis. Methods Eighty-five patients with cerebral arterial thrombosis were randomly divided into three groups. Group Ⅰ was the negative control group. Group Ⅱ was the conventional-dose therapy group and group Ⅲ was the high-dose therapy group. Each group was treated with related therapy and care. The blood lipids in all groups were tested before the treatment, 4 weeks, 12 weeks and 24 weeks after the treatment; the carotid intima-media thickness (IMT) were measured by the Germany SEQUOIAS-512-B ultra machine before the treatment and 24 weeks after the treatment; At the same time, the side effects of fluvastatin were recorded. Results The results of blood lipid tests showed that the LDL, TC and TG in two treated groups were significantly decreased compared to negative control group (P<0.05). After treated for 24 weeks, the carotid intima-media thickness (IMT) in two treated groups were significantly reduced (P<0.05); the side effects of fluvastatin were infrequent and there was no significant different among the three groups (P>0.05). Conclusion The effects of different doses of fluvastatin on cerebral arterial thrombosis were significantly different. With the dose of fluvastatin increased, the serum LDL-L and TC reduced more obvious and the inhibition on carotid atherosclerosis shows more obvious, and the side effects did not increased.     

Carbon dioxide recruitment threshold as a predictor of successful weaning in chronic obstructive pulmonary disease patients: A pilot study

Abstract Several methods have been used to predict successful weaning and extubation among chronic obstructive pulmonary disease (COPD) patients. The objective of this study is to determine whether carbon dioxide recruitment threshold (PCO₂RT) can be used as adjunct to conventional weaning parameters to predict early weaning and successful extubation. Twelve COPD patients who were ready to be extubated based on conventional weaning parameters were divided into group A ( n = 7) and group B ( n = 5). Group A were those patients with better weaning parameters and hence a higher probability of successful extubation as compared to group B. Carbon dioxide apnoeic threshold (PCO₂AT) was obtained by hyperventilating the patient using an increment of two breaths per min until apnoea occurs. At this point, the PCO₂AT or the PaCO₂ during said apnoeic period was recorded. A dead space of 150 cc is then added to the circuit until the patient starts to breathe as evidenced by the sensitivity trigger indicator. The PCO₂ obtained at this period is termed PCO₂RT. After weaning for 30 min on a T-tube, another arterial blood gas is determined and this is called the PCO₂SB or the CO₂ level after 30 min on spontaneous breathing. If the PCO₂SB-PCO₂RT difference is high with a sensitivity of 85.71% and specificity of 100% vs sensitivity of 57.14% and specificity of 60% using the conventional weaning parameters. Thus an increase in PCO₂SB at 30 min T-tube is indicative of impending respiratory pump failure and that other causes of failure to wean must be investigated.     

SLE小鼠高IgG血症Fcgr2b基因序列分析

目的: 测定系统性红斑狼疮(SLE)小鼠模型-NZB/WF1双亲NZB,NZW小鼠 Fcgr2b基因启动子区核酸序列,明确Fcgr2b基因启动子区的突变性质.方法:扩增NZB,NZW小鼠Fcgr2b基因启动子DNA进行核酸序列分析.采用ELISA法测定、比较(NZB×NZW )F1×NZW回交小鼠Fcgr2b基因B/W型与W/W型组间血清总IgG 水平.结果:NZB小鼠Fcgr2b基因启动子区与正常鼠Balb/C相比存在2个部位碱基缺失,分别为13 bp及3 bp.NZW小鼠除有3个碱基置换外,与Balb/C鼠该基因启动子区序列相同.回交小鼠Fcgr2b基因B/W型组血清总 IgG水平明显高于W/W型组(P<0.0001).结论:NZB小鼠Fcgr2b基因启动子区存在碱基缺失,且该缺失突变可能与血清总IgG水平升高有关.     

C－myc反义寡聚脱氧核苷酸抑制人脑胶质瘤细胞系BT_（325）Myc蛋白合成和细胞增殖并诱导其分化的研究

目的：探讨在体外ｃ－ｍｙｃ反义核酸是否可通过阻断人脑胶质瘤细胞中ｃ－ｍｙｃ基因的表达而抑制细胞增殖并诱导分化．方法：人工合成与ｃ－ｍｙｃｍＲＮＡ起始码及其后四个密码子互补的寡聚脱氧核苷酸（简称反义核酸）片段，用它处理培养的ＢＴ３２５细胞，观察它对细胞增殖的影响．同时用免疫细胞化学方法检测细胞中Ｍｙｃ蛋白的水平以及能反映胶质瘤细胞分化的Ｓ－１００和ＧＦＡＰ两种蛋白的水平，分析这些指标的变化．结果：发现４ｕｍｏｌ／Ｌ的ｃ－ｍｙｃ反义核酸明显抑制ＢＴ３２５细胞的增殖和Ｍｙｃ蛋白的合成，且后者发生在加入反义核酸后１ｈ，并持续２４ｈ以上，而细胞增殖受抑制要到第５日才明显．从第２日到第５日细胞中Ｓ－１００和ＧＦＡＰ染色明显加深，反映细胞有分化趋势．用同样长度的无关序列寡聚脱氧核苷酸作对照，则未见上述变化，表明ｃ－ｍｙｃ反义核酸的作用是序列特异性的．结论：ｃ－ｍｙｃ反义核酸可特异地抑制ＢＴ３２５细胞中Ｍｙｃ蛋白的合成和细胞增殖，并能诱导其分化．     

Madigan前列腺切除术26例报告

我院自 1998年 12月～ 2 0 0 0年 1月施行 Madigan前列腺切除术治疗前列腺增生症 (BPH) 2 6例 ,取得满意效果 ,报告如下。1　临床资料1.1　一般资料　本组病人 2 6例 ,年龄 6 4.8± 5 .5岁 (5 0～80岁 ) ,均有典型 BPH临床表现。 12例急性尿潴留 ,14例残余尿 >6 0 m l。术前经 B超及肛门指检诊断前列腺增生 °19例 , °并向膀胱腔内突出 7例。前列腺最大径 4.6～ 8.5 cm,中叶最大 5 .2 cm× 2 .3cm。合并尿路感染 17例 ;伴有不同程度肾积水肾功能不全 5例 ;合并膀胱结石 3例 ,高血压 14例 ,糖尿病 6例。全部病例均排除膀胱肿瘤等膀胱内…     

尼莫地平对急性缺血性脑损伤的干预机制

目的：探讨尼莫地平对急性缺血性脑损伤的保护作用。方法：将局灶性脑缺血模型大鼠分为假手术组，缺血组及尼莫地平干预组。测定脑组织PLA2活力，脑细胞内游离Ca^2 浓度，脑含水量及脑组织PLA2表达量的改变。结果：尼莫地平可使缺血后脑细胞内游离Ca^2 浓度，PLA2活性及脑组织含水量明显降低。但对脑缺血后脑组织PLA2mRNA表达降低不明显。结论：尼莫地平能抑制PLA2活性，降低细胞内游离Ca^2 浓度，减轻脑水肿病理改变，对缺血性脑细胞损害有一定保护作用。     

贝那普利联合氨氯地平治疗中重度原发性高血压的临床观察

目的　探讨贝那普利联合氨氯地平治疗中重度原发性高血压的疗效、安全性、耐受性。方法　62例中重度原发性高血压的病人 ,应用贝那普利联合氨氯地平进行治疗 ,观察其降血压的效果及不良反应。结果　服药 2周 ,显效 3 7例 (59 68% ) ,有效 2 3例 (3 7 10 % ) ,无效 2例 (3 2 2 % ) ,总有效率达 96 78%。不良反应少而轻 ,持续时间短暂。结论　贝那普利与氨氯地平两药联合应用在治疗中重度原发性高血压 ,效果好 ,平稳 ,依从性好 ,耐受性好 ,方便 ;两者可以常规联合应用 ,值得推广应用     

深圳市医疗市场结构与集中度分析

目的了解深圳市医院市场集中度情况，分析深圳市医疗市场结构，为下一步发展方向提供理论依据。方法对深圳97家医院的规模、市场份额等分析，计算深圳医疗市场的HHI指数，绘制洛伦兹曲线并计算相应基尼系数。结果深圳医疗市场HHI值均小于1000。分别以职工数和病床数表示医院规模，计算出门急诊量、出院病人数和手术量的基尼系数均小于0．40。结论深圳市医疗市场集中度较低，属垄断竞争市场。不同规模医院市场份额分配相对合理。深圳市应充分利用市场发育较好这一优势，发挥市场的作用，通过市场竞争，提高整体医疗市场效率。     

氟尿嘧啶和卡铂周围静脉给药与舌动脉灌注栓塞后药代动力学实验研究

目的研究对比经数字减影血管造影术(DSA)舌动脉介入灌注与经周围静脉给药两种途径抗癌药物在血和组织中浓度的不同变化。方法选4只杂种健康犬,分为两组,一组先静脉给予氟尿嘧啶(Fu)和卡铂(CBP)各75 mg,于给药后10 min、20 min、30 min、1 h、2 h、3 h、5 h、3 d、5 d、8 d静脉取血,于给药后10 min、20 min3、0 min3、d、5 d8、d行舌及颊组织活检,应用高效液相色谱法(HPLC)测定血、组织中药物浓度;3周后行DSA超选择性舌动脉介入灌注抗癌药物栓塞,同上检测血、组织中药物浓度。另一组先行动脉给药,再行静脉给药,余同前组。结果DSA超选择性舌动脉介入灌注抗癌药物栓塞后,血药浓度的衰减比静脉给药变慢,而舌组织中药物浓度显著增加,给药后10、203、0 min舌组织中Fu浓度是静脉用药组的25、20、4倍,颊组织中药物浓度是静脉用药组的25、44、25倍,差异有显著性(F=4.81~52.02,t=2.82~9.75,P<0.01、0.05)。结论术前DSA动脉介入灌注抗癌药物栓塞,能减缓血药浓度的衰减,增加组织中药物浓度。