也谈“热入血室”

读了《光明中医》2 0 0 4年第 4期李桂英所作《谈谈对“热入血室”的认识》(以下简称李文 )一文后 ,对文中一些观点有所看法 ,下面谈谈几点见解 ,以之商榷。1　“血室”拟应包括子宫 ,以及冲脉和肝脏关于何谓“血室” ,历来虽有冲脉、肝、子宫不同 ,但多数医家根据热入血室与月经有关 ,故从胞宫之说[1] 。而李文则认为“血室”与“女子胞”(即子宫 )有所区别的原因在于“热入血室”的一些临床表现与“热在子宫”缺乏特异性联系 ,但事实并非如此 ,因为冲脉、肝、子宫三者关系确为密切。按照传统中医的观点 ,子宫之中有胞脉 ,连系子宫的还有胞…     

抑郁症及抗抑郁药物对疼痛阈值的影响

抑郁症是一种复杂的临床疾病,患者除了自身情绪的改变外,对于疼痛的感知也会发生 变化。临床中,抑郁症患者的疼痛阈值增高常有报道,抗抑郁药物在治疗抑郁症的同时,也会影响疼痛 阈值。由于病理生理的复杂性,目前关于抑郁症及抗抑郁药物对疼痛阈值的影响及机制的结论阐述较 为单一,但疼痛阈值背后的大脑皮层、脑干的神经机制研究的创新层出不穷。本文就抑郁症及抗抑郁 药物对疼痛阈值的不同影响及潜在的作用机制进行综述,从大脑、脑干、脊髓中的受体与递质方面探讨 疼痛传递及调节的潜在神经机制,旨在为抑郁症患者疼痛阈值改变的机制研究及临床治疗提供思路     

改良腭黏膜瓣整复软腭裂的临床观察

目的:探讨整复软腭裂的新术式,重建腭咽闭合的效果。方法:采用腭黏膜瓣后推术对25例软腭裂患者进行整复治疗,并对其进行随访,以了解术后腭咽闭合的情况。结果:所有患者术后腭部创口愈合良好,瘢痕不明显,软腭的活动度良好,且均有良好的腭咽闭合功能。结论:对先天性软腭裂的患者实施该术式整复,能较好地恢复腭咽闭合功能,是较为理想的手术整复方法之一。     

涂布方式对柔性硅胶血管制作质量的影响

目的 探究比较不同涂布方法对复杂柔性硅胶血管仿体制作质量的影响。方法 基于个性化前交通动脉瘤模型,采用喷涂和旋涂两种方法,制作多例硅胶血管仿体,定量比较两种方法在制作同一血管结构时的厚度增长、周向均匀以及透光性等指标。结果 旋涂法在血管大曲率、变径位置和直管位置处的厚度控制以及厚度均匀性占优,且具有较好的透光性和表面光滑性。旋涂法厚度相对偏差较喷涂法分别降低8.9%、10.8%和16.9%。结论 现阶段旋涂法在制作硅胶仿体模型时较喷涂法具有厚度均匀性优势和透光性优势,在大血管流体力学体外实验领域具有十分可期的应用前景。     

Immunosuppressive Tumor Microenvironment and Immunotherapy of Epstein–Barr Virus-Associated Malignancies

The Epstein–Barr virus (EBV) can cause different types of cancer in human beings when the virus infects different cell types with various latent patterns. EBV shapes a distinct and immunosuppressive tumor microenvironment (TME) to its benefit by influencing and interacting with different components in the TME. Different EBV-associated malignancies adopt similar but slightly specific immunosuppressive mechanisms by encoding different EBV products to escape both innate and adaptive immune responses. Strategies reversing the immunosuppressive TME of EBV-associated malignancies have been under evaluation in clinical practice. As the interactions among EBV, tumor cells, and TME are intricate, in this review, we mainly discuss the epidemiology of EBV, the life cycle of EBV, the cellular and molecular composition of TME, and a landscape of different EBV-associated malignancies and immunotherapy by targeting the TME.     

Contribution Ratio Assessment of Process Parameters on Robotic Milling Performance

Robotic milling has broad application prospects in many processing fields. However, the milling performance of a robot in a certain posture, such as in face milling or grooving tasks, is extremely sensitive to process parameters due to the influence of the serial structure of the robot system. Improper process parameters are prone to produce machining defects such as low surface quality. These deficiencies substantially decrease the further application development of robotic milling. Therefore, this paper selected a certain posture and carried out the robotic flat-end milling experiments on a 7075-T651 high-strength aeronautical aluminum alloy under dry conditions. Milling load, surface quality and vibration were selected to assess the influence of process parameters like milling depth, spindle speed and feed rate on the milling performance. Most notably, the contribution ratio based on the analysis of variance (ANOVA) was introduced to statistically investigate the relation between parameters and milling performance. The obtained results show that milling depth is highly significant in milling load, which had a contribution ratio of 69.25%. Milling depth is also highly significant in vibration, which had a contribution ratio of 51.41% in the X direction, 41.42% in the Y direction and 75.97% in the Z direction. Moreover, the spindle speed is highly significant in surface roughness, which had a contribution ratio of 48.02%. This present study aims to quantitatively evaluate the influence of key process parameters on robotic milling performance, which helps to select reasonable milling parameters and improve the milling performance of the robot system. It is beneficial to give full play to the advantages of robots and present more possibilities of robot applications in machining and manufacturing.     

正畸托槽去除时粘接剂残留模式的体外研究

目的：本研究只对金属托槽、树脂托槽分别应用3种不同粘接剂粘接,正畸托槽去除时粘接剂残留的模式进行体外研究。方法：收集因正畸需要而拔除的新鲜双尖牙120颗,随机等分为6组,用国产双尖牙方丝弓树脂托槽和国产方丝弓金属托槽分别应用3种不同粘接剂模拟临床应用的实验条件下粘接,并做组别标记,1KN电液疲劳实验机进行托槽去除。在实体显微镜下观察ARI记分情况,对正畸托槽去除时粘接剂残留模式进行体外研究。结果：树脂托槽组中和金属托槽组中3组粘接剂去粘接后,ARI记分均无显著性差异（P〉0.05）,但同种粘接剂金属托槽与树脂托槽ARI记分有显著性差异（P〈0.05）。结论：去粘接时金属托槽留在牙面的粘接剂少,树脂托槽留在牙面的粘接剂多。说明树脂托槽与粘接剂之间的粘接强度有待进一步加强。     

钬激光对复杂输尿管结石的诊疗价值 (附56例报告)

目的:探讨钬激光治疗复杂性输尿管结石有效性及安全性。方法:回顾性分析2003年12月～2005年12月收治的经输尿管镜钬激光治疗复杂性输尿管结石56例患者的临床资料。56例患者均有不同程度肾积水。12例并发结石远端输尿管狭窄,27例并发单纯息肉,9例并发息肉形成并包裹结石,8例并发结石嵌顿、与输尿管壁紧密粘连,24例有接受ESWL治疗史,5例曾行输尿管切开取石术。双侧输尿管结石伴肾功能减退6例。结果:56例中,53例单次手术碎石成功,单次手术结石粉碎率达94.6%(53/56),1例在钬激光碎石过程中结石移位于肾盏,术后再行ESWL治疗,1例进镜时输尿管穿孔,1例巨大结石行钬激光碎石失败改为开放手术。结论:输尿管镜钬激光碎石术治疗复杂性输尿管结石安全、有效、微创,可作为治疗复杂性输尿管的首选方法。     

Surgical and Oncologic Outcomes of Radical Abdominal Trachelectomy Versus Hysterectomy for Stage IA2-IB1 Cervical Cancer

Study Objective: To compare the surgical and oncologic outcomes between abdominal radical trachelectomy (ART) and radical hysterectomy (RH) for stage IA2-IB1 cervical cancer.Design: A retrospective cohort study (Canadian Task Force classification II-2).Setting: Shandong Cancer Hospital, Shandong, China.Patients: Three hundred twenty-nine patients with IA2-IB1 cervical cancer.Interventions: All patients underwent ART or RH.Measurements and Main Results: All patients were divided into ART (n?=?143) and RH (n?=?186) groups according to the surgical approach. Additionally, oncologic and fertility outcomes were compared for different tumor pathologies and sizes in ART patients. The ART group had similar case characteristics as the RH group, except that the ART group had a longer surgical time. During a similar follow-up period, there were 4 (2.9%) recurrences and 3 (2.2%) patients who died from recurrence in the ART group compared with 8 (4.6%) recurrences and 4 (2.3%) patients who died from recurrence in the RH group (p?=?.444 and p?=?.999, respectively). In the ART group, squamous cell carcinoma (SCC) patients had a 5-year overall survival and pregnancy rate similar to those of non-SCC patients (98.1% vs 96.8%, p?=?.999; 33.3% vs 26.7%, p?=?.873), and patients with tumors ≤2 cm and 2 to 4 cm experienced a similar 5-year overall survival rate (97.0% vs 98.6%, p?=?.999), except patients with tumors ≤2 cm had a higher pregnancy rate (45.2% vs 17.2%, p?=?.020).Conclusion: ART seems to have similar surgical and oncologic outcomes to RH, except ART has a longer surgical time. Both non-SCC patients and stage IA2-IB1 patients with 2- to 4-cm tumors can undergo ART safely. Patients with tumors ≤2 cm have a higher pregnancy rate than patients with 2- to 4-cm tumors.     

生骨散治疗尺骨下段骨折迟缓愈合疗效观察

骨折迟缓愈合是指骨折愈合已经超过同类骨折正常临床愈合时间的1倍以上,骨折端尚未连接,骨折处仍有疼痛、压痛、纵轴叩击痛、异常活动现象,X线片显示骨折端所产生的骨痂较少,骨折线不消失,骨折端无硬化现象,并有轻度脱钙。尺骨下段由于血运较差,骨折后容易造成骨折迟缓愈合。我们临床采用小夹板充分固定结合生骨散外敷治疗,取得了良好的效果。