Influence of preparation design and spacing parameters on the risk of chipping of crowns made with Cerec Bluecam before cementation

Purpose

To evaluate the influence of the preparation design and spacing parameters on the risk of chipping of crowns made by CEREC Bluecam before cementation.

7例肝脏淋巴上皮瘤样癌临床病理特征及MRI表现

目的：探讨7例肝脏淋巴上皮瘤样癌的临床病理特征及MRI表现。方法：回顾性分析2009年12月至2021年12月在温州医科大学附属第五医院经手术病理证实的7例肝脏淋巴上皮瘤样癌的临床病理及MRI资料。结果：7例患者中男2例,女5例,中位年龄54岁;4例乙型肝炎病毒阳性,丙型肝炎病毒均为阴性,其中1例合并肝硬化,并伴血清甲胎蛋白（AFP）水平升高（389.7 ng/mL）。病理诊断淋巴上皮瘤样肝细胞癌1例,淋巴上皮瘤样胆管细胞癌6例;镜下肿瘤组织内有大量淋巴细胞浸润;EBER原位杂交检测阳性6例。MRI表现为结节样5例,形态规则6例,边界清6例;T1WI呈低信号,T2WI呈高信号,DWI呈稍高信号2例,呈明显高信号5例;强化方式多样：I型（快进快出强化）3例;II型（持续环状强化）2例;III型（边缘性填充式强化）2例;I、II型病灶可见类包膜样强化;所有病灶均未出现瘤周异常强化、胆管扩张和或肝包膜凹陷。结论：肝脏淋巴上皮瘤样癌临床少见,预后相对较好,病理具有一定特征,MRI上多表现为类圆形的结节,强化方式多样,多见类包膜样强化。     

原发性胆囊鳞癌和腺鳞癌临床病理学分析

目的 探讨原发性胆囊鳞癌（SCC）、腺鳞癌（ASC）的临床病理特征、诊断、治疗及预后。方法 对13例原发性胆囊SCC、ASC行HE和免疫组化SP法染色,分析其临床病理学特征并复习文献。结果 原发性胆囊SCC 7例,原发性胆囊ASC 6例,其中男3例,女10例,主要发生于老年患者,中位年龄为67岁。病理学分期T4期8例,T3期4例,T1b期1例。肿瘤部位：弥漫分布4例,胆囊底部5例,胆囊底部及体部3例,胆囊体部1例。其中9例非弥漫肿物最大径2.0~6.0 cm。合并胆囊结石12例。手术方式：行开腹手术7例,腹腔镜手术6例。截至2022年4月1日,11例患者获得随访,中位随访时间14个月（6~110个月）,死亡7例,生存4例。6例行术后化疗或放化疗（化疗用药包括吉西他滨、吉西他滨+顺铂、替加氟）,其中3例死亡,3例生存;5例未行放化疗患者中4例死亡,1例生存。结论 原发性胆囊癌以腺癌多见,而SCC、ASC少见。胆囊SCC、ASC肿物体积较大,预后较腺癌差,治疗以手术切除为主,术后放化疗疗效尚不明确。     

丹参多酚酸对全髓关节置换术后血流动力学参数的影响

目的:观察丹参多酚酸对全髓关节置换术前后无创血流动力学参数的影响。方法:选取2016年3月1日至2017年2月1日福州总医院九五临床部骨科住院部就诊的符合全髋关节置换术患者60例,根据随机数字表法分为观察组和对照组,每组30例,对照组常规全髋关节置换术操作,观察组基于对照组基础上施予丹参多酚酸注射液。在颈内静脉穿刺放置动脉漂浮导管,连接多功能监护仪和无创血流动力学监测仪对患者血气参数、血压和血流动力学进行记录和监测,同时监测患者治疗前后血液流变学参数。结果:1)2组术中血气血压参数具有可比性(P0.05)。2)术后2组全血高切黏度、全血低切黏度、血细胞比容、血浆黏度均降低(P0.05),且观察组各指标均低于对照组(P0.05)。3)2组术后无创血流动力学最大峰值流速、舒张末流速、血管搏动指数、血管阻力指数均升高(P0.05),且观察组各指标均优于对照组(P0.05)。结论:丹参多酚酸可以降低全髋关节置换术患者的血液黏滞度,改善其血流动力学参数,提高患者术后恢复情况。     

50例肺癌患者中西医结合治疗后舌脉象参数的变化

目的:观察肺癌患者中西医结合治疗后其舌脉象参数变化情况,探讨舌脉象参数变化在肺癌患者中西医结合治疗过程中的临床意义。方法:于2015年1月至2016年4月,选取该阶段内我院采取中西医结合疗法治疗的50例肺癌患者作为此次研究的对象,分别于治疗前、治疗后1个月、治疗后2个月,采用舌脉象数字化分析仪对肺癌患者的舌象图片和关部脉图进行检测,比较治疗前、治疗后1个月、治疗后2个月患者的舌象参数、脉象参数。结果:与治疗前相比,治疗后1个月、治疗后2个月肺癌患者脉象参数中的PSR1明显增高(P0.05),PSR2明显降低(P0.05);与治疗后1个月相比,治疗后2个月肺癌患者脉象参数中的PSR1明显降低(P0.05),PSR2、PSR3均明显增高(P0.05);治疗前与治疗后相比,肺癌患者的脉象参数CSR1、CSR2、CSR3均未出现明显改变(P0.05)。与治疗前相比,治疗后1个月肺癌患者的舌象润燥指数、腐腻指数、裂纹指数均明显增高(P0.05),厚薄指数明显降低(P0.05);与治疗后1个月相比,治疗后2个月肺癌患者的裂纹指数明显降低(P0.05),厚薄指数明显增高(P0.05),润燥指数和腐腻指数未发生明显改变(P0.05)。结论:在肺癌患者采用中西医结合疗法治疗的过程中,舌脉象参数的变化可有效反映肺癌患者的中西医结合治疗效果,可作为中西医结合治疗肺癌的疗效评估指标。     

Male age is more critical to sperm DNA integrity than routine semen parameters in Chinese infertile males

This retrospective study evaluated the correlation between the sperm DNA integrity results and infertile male age or sperm motility in 654 infertile men undergoing infertility evaluations from 2013 to 2016. The correlation between the results of sperm DNA integrity and male age was positive, while a negative correlation was detected between sperm DNA integrity and sperm motility in all subjects. According to age (≤30, 30–35 and ≥35), men with normozoospermia or abnormal semen parameters were, respectively, divided into groups 1, 2 and 3, or groups A, B and C. The sperm DNA fragmentation index (DFI) and DFI abnormality rates in groups 3 and C were highest among their respective cohorts. But they were not significantly different between groups within the same age range. Statistically significant differences were found in male age, progressive motility, as well as total motility between patients with normal DFIs and those with abnormal DFIs in group C, but not in group 3. Older (≥35 years) infertile men have increased sperm DNA fragmentation, independent of conventional semen parameters. Male age is more critical to sperm DNA integrity than routine semen parameters.     

In vitro effects of clomiphene citrate on sperm parameters and fertilisation rate in male NMRI mice

Clomiphene citrate (CC), as a medication in male infertility, improves the sperm parameters in oral consumption but various detrimental side effects have been reported including testicular tumours, gynaecomastia, skin allergic reactions and ocular symptoms. Therefore, this study was designed to evaluate the in vitro effects of CC on sperm parameters and fertilisation rate in IVF protocol. Sperm samples of NMRI adult mice were divided into six groups: group 1 received no treatment (control group), while groups of 2, 3, 4, 5 and 6 (experimental groups) were incubated with the doses of 0.001, 0.01, 0.1, 1 and 10 µg/ml of CC in culture medium respectively. Sperm parameters (viability, morphology and motility), DNA fragmentation levels and fertilisation rate in IVF were evaluated. The results demonstrated that the doses of 0.1 µg/ml (p = .000007 for viability and p = .00006 for fertilisation rate) and 1 µg/ml (p = .032 for viability and p = .005 for fertilisation rate) CC cause a significant improvements; also, the dose of 0.1 µg/ml CC found effective on sperm motility (p = .0003). In the field of IVF, the application of 0.1 and 1 µg/ml of CC in the culture medium may improve the sperm parameters in IVF protocol with no side effects.     

The effects of verapamil and heparin co-administration on sperm parameters and oxidative stress in prevention of testicular torsion/detorsion damage in rats

In this research, the impacts of combined administration of verapamil and heparin on testicular torsion damage were examined. In this experimental study, 30 sexually mature male Wistar albino rats were divided into five equal groups haphazardly (n = 6): Group 1 was the sham group. In group 2, a 2-hr testicular torsion was induced, and thereafter, detorsion was done. Rats in group 3 and group 4 experienced an identical surgical procedure like group 2, but verapamil and heparin were administered in 0.3 mg/kg and 800 IU/kg doses respectively, and in group 5, a combination of verapamil and heparin were administered. Intraperitoneal drug injection in all treatment groups was done 30 min before testicular detorsion. Testicular torsion significantly changed sperm parameters, oxidative stress biomarkers and Cosentino's histological score compared to the sham group (p < .05). All treatment groups reduced testicular damage by decreasing oxidative stress and improving sperm parameters, but heparin and co-administration of verapamil and heparin were significantly better than verapamil injection alone. However, heparin injected group was more effective than other treatment groups (p < .05). Overall, an anticoagulant like heparin is more effective than a calcium channel blocker such as verapamil, and it is more likely to reduce testicular torsion injuries.     

Impact of aluminium toxicity on vital human sperm parameters—Protective effects of silymarin

Aluminium is an environmental pollutant which induces oxidative stress, while silymarin is a potent antioxidant. This study was conducted to investigate the possible protective effects of silymarin on adverse effects of aluminium chloride on vital sperm parameters as well as its effects on oxidative stress markers in human spermatozoa. Human spermatozoa were divided into 5 groups as follows: (a) spermatozoa at 0 hr; (b) spermatozoa at 180 min (control); (c) spermatozoa treated with aluminium chloride; (d) spermatozoa treated with silymarin + aluminium chloride; and (e) spermatozoa treated with silymarin. The sperm samples were used to assess sperm vital parameters such as acrosome and plasma membrane integrity, viability, mitochondrial membrane potential (MMP) and motility as well as sperm malondialdehyde (MDA) level and the total antioxidant capacity. The percentage of acrosome and plasma membrane integrity, viability, MMP, motility and the total antioxidant capacity of spermatozoa treated with aluminium chloride significantly decreased compared with control group, while the level of MDA significantly increased compared with the control group. In the silymarin + aluminium chloride group, silymarin could significantly compensate the adverse effects of aluminium chloride on these parameters. Administration of silymarin alone significantly increased the percentage of acrosome and plasma membrane integrity, viability, motility and total antioxidant capacity, while significantly reduced MDA levels compared with the control group. Aluminium chloride by inducing oxidative stress exerts disastrous effects on the vital parameters of human spermatozoa and silymarin, as a potent antioxidant, could reverse the effects of aluminium chloride on these parameters.     

91例丙氨酸氨基转移酶低于正常值上限二倍的慢性乙型肝炎患者肝组织病理特征与实验室指标的相关性

目的分析丙氨酸氨基转移酶（ALT）<正常值上限2倍（2× ULN）慢性乙型肝炎（CHB）患者肝组织病理特征与实验室指标的相关性。 方法收集兰州市第二人民医院2017年1月至2019年5月住院的ALT< 2× ULN、HBV DNA阳性、进行肝脏活体组织活检的CHB患者共91例,根据肝组织活检结果将G2以下者定为轻度炎症组（61例）,G2及以上者定为中度炎症组（30例）;S2以下者定为无明显纤维化组（69例）,S2及以上者定为明显纤维化组（22例）,分别将炎症两组、纤维化两组患者的血细胞、肝生化指标、凝血指标、乙型肝炎病毒标志物（HBV M）、HBV DNA进行对比分析（Wilcoxon W检验和χ²检验）与相关性研究（φ相关分析）。 结果91例患者肝组织轻度炎症组与中度炎症组ALT、天门冬氨酸氨基转移酶（AST）、球蛋白（GLO）和乙型肝炎病毒e抗原（HBeAg）阳性率差异均有统计学意义（Z = 2.095、P = 0.036,Z = 3.927、P < 0.001,Z = 2.900、P = 0.004,χ² = 10.972、P = 0.001）。无明显纤维化组与明显纤维化组患者AST、GLO、白细胞（WBC）、血小板（PLT）和HBeAg阳性率差异均有统计学意义（Z = 2.933、P = 0.003,Z = 3.064、P = 0.002,Z = 2.544、P = 0.011,Z = 2.231、P = 0.026,χ² = 10.116、P = 0.001）。HBV DNA水平在肝组织轻度炎症组和中度炎症组、无明显纤维化组和明显纤维化组间差异均无统计学意义（Z = 1.908、P = 0.056,Z = 1.729、P = 0.084）。ALT、AST与肝组织炎症活动度低度相关（r_φ = 0.211、P = 0.044;r_φ = 0.284、P = 0.007）;AST、WBC与肝组织纤维化程度低度相关（r_φ = 0.222、P = 0.035,r_φ = 0.289、P = 0.006）;GLO与肝组织纤维化程度中度相关（r_φ = 0.457、P < 0.001）。 结论对于ALT< 2× ULN、HBV DNA阳性的CHB患者,HBeAg阳性者较阴性者发生肝纤维化的机率高;WBC、PLT、AST、GLO水平与肝组织纤维化程度有关,其中GLO水平> 30 g/L的患者与肝组织肝纤维化的相关性更高。