C形臂引导下射频温控热凝术治疗三叉神经痛2700例体会

目的探讨C形臂定位下选择性射频热凝治疗原发性三叉神经痛的方法及临床效果。,方法同顾性分析用C形臂引导下经皮穿刺卵网孔半月神经节,射频温控热凝术（温度设定65～80℃,时间设定为30～60S）治疗三叉神经痛患者2700例。对临床资料进行疗效评定。结果疼痛完全消失2661例,总有效率为98．56％,无效9例（0．33％）,复发30例（1．11％）。结论C彤臂引导下选择性卯圆孔半月神经节射频热凝术治疗三叉神经痛是一种微创、安全、适应证广、效果显著的治疗方法,对伴有心血管疾病及其他治疗方法复发的三叉神经痛患者,该方法是安全可靠的。     

云南白药对血小板的释放与代谢反应的影响

目的:研究云南白药对血小板颗粒内容物释放和代谢反应的影响,探讨其止血和抗炎机理.方法:87例正颌外科手术患者随机分为试验组(43例)和对照组(44例),分别在术前3日口服云南白药胶囊和安慰剂胶囊;采集术前和术中静脉血,用酶联免疫吸附法测定手术开始前和术中血浆11-去氢-血栓烷B2 (11-Dehydro-Thromboxane B2, 11-DH-TXB2)水平;分离和固定血小板,观察血小板超微结构和颗粒内容物的改变.结果:术前实验组血浆11-DH-TXB2(58.83±15.89)ng/L,对照组(69.54±14.43)ng/L,两组比较差异无统计学意义;术中实验组11-DH-TXB2(90.41±38.97)ng/L,对照组(131.78±78.92)ng/L,两组差异有统计学意义;实验组术中血小板内α-颗粒数目减少,两组比较具有统计学差异.结论:云南白药抑制血小板11-DH-TXB2的生成,反映了血栓烷A2生成减少,不会增加手术区域微血管的收缩,可能有利于改善术后局部血液循环;在手术刺激诱导下云南白药可促进血小板颗粒内容物的释放,有利于提高术中凝血功能,减少手术中出血量.     

产前行妊娠相关血浆蛋白A筛查联合FISH诊断Down综合征

目的 :应用单项妊娠相关血浆蛋白A(PAPP A)筛查与羊水间期荧光原位杂交 (FISH)产前诊断相结合预防妊娠Down综合征胎儿。方法 :采用酶联免疫方法 (ELISA)对孕周分别为 6～ 2 7周的 1839例孕妇进行母血PAPP A单项筛查 ,以低于同一孕周的中位数时视为可能妊娠Down综合征胎儿的高风险孕妇。取高风险孕妇羊水细胞直接进行间期FISH产前诊断并同时用部分羊水细胞遗传学检查作对照。结果 :检出 1例孕 7周孕妇其PAPP A值为 0 0 5 1U/L ,低于同一孕周中位数 2 0多倍。羊水细胞间期FISH结果显示 ,含 5个杂交信号的核占所有杂交核的 38 5 % ,与细胞遗传学分析的 2 1三体核型完全一致。结论 :单项PAPP A筛查与羊水间期细胞FISH相结合是早期防治妊娠Down综合征有效可行的方法。     

The Nitrone Spin Trap 5,5-Dimethyl-1-pyrroline N-oxide Affects Stress Response and Fate of Lipopolysaccharide-Primed RAW 264.7 Macrophage Cells

The nitrone spin trap 5,5-dimethyl-1-pyrroline N-oxide (DMPO) is commonly used to study free radicals. Due to its free radical trapping properties, DMPO is thought to reduce free radial-mediated oxidative damage and other related cellular responses. The purpose of this study was to assess the effect of DMPO on lipopolysaccharide (LPS)-induced inflammation, endoplasmic reticulum (ER) stress, and apoptosis in RAW 264.7 cells. The results showed that DMPO at 50 mM inhibited inducible nitric oxide synthase expression when added shortly after LPS treatment (≤3 h). Interestingly, DMPO increased anti-inflammatory heme oxygenase-1 (HO-1) expression and reversed LPS-induced decrease in HO-1 expression. LPS could increase cellular ER stress as indicated by C/EBP homologous protein (CHOP) induction; DMPO reduced LPS effect on CHOP expression. Unexpectedly, DMPO had a synergistic effect with LPS on increased caspase-3 activity. Overall, DMPO harbors multiple modulating effects but may induce apoptosis in LPS-stressed cells when given at 50 mM, an effective dose for its anti-inflammatory activity in vitro. Our data provide clues for further understanding of the nitrone spin trap with therapeutic potential.     

珊瑚人工骨的实验研究

研究珊瑚人工骨在成骨过程中所起作用、其生物降解与新骨形成的关系。方法选用６只杂交狗,将珊瑚人工骨植入下颌下缘,以对侧作为对照,采用Ｘ线片、扫描电镜及能谱分析进行观察。结果术后第四、第五个月,实验侧下缘有纤维钙结构和新骨形成,很少有珊瑚人工骨残留,能谱分析钙盐含量很高。     

Overview of the university-based addiction studies programs in the United States

Background: The field of addiction studies (AS) has grown in the last several decades. However, little is known about the structure and conditions of current academic programs. Only two studies have examined AS programs in the U.S., and both were conducted almost 15 years ago. The current study was designed to identify AS programs existing in the U.S. universities.

Methods: We conducted an Internet search to identify university-based programs according to defined key words. The university program websites were then subjected to content analysis.

Results: A total of 333 U.S. universities were identified that offered 392 different academic programs in AS of which 302 were degree programs. Out of these, 161 (53%) programs were offered at the associate degree level, 48 (15,9%) at the bachelor’s level, 55 (18.2%) at the master’s level, and 5 (1.6%) at the doctorate level. The largest number of programs was in California. Two states in the U.S. had no identifiable programs. Only one university located in the state of New York offered comprehensive academic programs across the educational spectrum. Many of the academic programs offered certificates. The most common phrases used in program titles were “substance abuse”, “addiction studies/counseling”, and “chemical dependency”.

Conclusions: There is a wide range of academic AS programs in the U.S., although their focus is mostly on clinical training rather than on research or drug policy. Future surveys such as this one would benefit from greater attention to issues related to certification, licensing, and academic curricula.     

正颌手术前后患者心理韧性与生活质量相关性研究

目的:调查牙颌面畸形患者正颌手术前后韧性水平变化及与生活质量相关性.方法:选取2019年9月～2020年9月于北京大学口腔医院入院接受正颌手术治疗的牙颌面畸形患者,于术前(T1)、术后第2周(T2)、术后第3个月(T3)、术后第6个月(T4)填写心理韧性量表(Connor-Davidson Resilience sca...     

经食管心房起搏对功能性左束支阻滞的研究

目的研究V1导联左束支阻滞QRS波形的早期表现,以及左束支阻滞从不完全性到完全性在V1导联QRS波形的演变规律及影响功能性左束支阻滞显现的因素。方法100例经食管心房程序刺激显现的具有直接显示性左束支文氏阻滞特征的功能性左束支阻滞病人与100例无功能性束支阻滞的正常者作对比研究。结果①功能性左束支阻滞的检出率为6.73%;②V1导联左束支阻滞的早期QRS波形的表现为SV1增深;③左束支阻滞从不完全性到完全性在V1导联QRS波形的演变规律为正常rS→深S波的rS→窄QS→宽QS;④功能性左束支阻滞的房室交界区功能不应期略短于左束支有效不应期,而房室交界区相对不应期、功能不应期则显著短于对照组(P<0.01)。结论V1导联左束支阻滞的早期QRS波形的表现为SV1增深,左束支阻滞从不完全性到完全性在V1导联QRS波形的演变规律为正常rS—深S波的rS—窄QS—宽QS。     

Effect of Obesity on P‐Wave Parameters in a Chinese Population

Objective: To study the association between obesity and P‐wave duration and dispersion (P_d) in order to evaluate the potential risk for atrial fibrillation development in Chinese subjects using the definitions applied for Asian populations. Methods: The study population consisted of 40 obese (body mass index (BMI) ≥ 25 Kg/m², according to the World Health Organization classification for the Asian population) subjects and 20 age‐ and sex‐matched normal weight controls. Maximum P‐wave duration (P_max), minimum P‐wave duration (P_min), and P_d were carefully measured using a 12‐lead electrocardiogram, while the presence of interatrial block (IAB; P ≥ 110 ms) was assessed. Results: There were no significant differences between the two groups regarding age, sex, history of hypertension or diabetes, and hyperlipidemia. Compared to controls, BMI, left atrial diameter (LAD), and interventricular septal thickness were increased, while P_max (111.9 ± 9.3 vs 101.1 ± 6.0 ms, P < 0.01) and P_d (47.9 ± 9.3 vs 31.8 ± 6.9 ms, P < 0.01) were significantly prolonged in the obese group. P_min was similar between the two groups. The prevalence of IAB was significantly greater in the obese subjects. Pearson's correlation analysis showed that there were positive correlations between P_d and BMI (r = 0.6, P < 0.001), as well as between P_d and LAD (r = 0.366, P < 0.05). Conclusion: Our data suggest that obesity is associated with increased P_max and P_d, and increased prevalence of IAB, parameters that have been associated with atrial fibrillation. The correlation of these electrocardiogram parameters with LAD indicates an association between increased BMI and atrial remodeling in Asian subjects. Ann Noninvasive Electrocardiol 2010;15(3):259–263     

The rate of decrease in oxygen desaturation during severe obstructive sleep apnea syndrome is correlated with subjective excessive daytime sleepiness

Sleep and Breathing - To explore factors that influence subjective excessive daytime sleepiness (EDS) in patients with severe obstructive sleep apnea syndrome (OSAS). Patients with snoring seen at...