家兔急性实验性面神经损伤的组织病理观察

目的　观察家兔面神经急性损伤后髓鞘和轴索的组织病理变化。方法　用丝线结扎茎乳孔以外的面神经总干 ,观察结扎后 1天、3天及 5天面神经的组织病理改变。结果　家兔面神经受损后 ,先后在髓鞘和轴索出现轻重不等、程度不同的形态学改变。结论　结扎家兔面神经后 ,其髓鞘及轴索会出现相应的病理改变 ,且随着结扎天数的增加 ,面神经损伤亦呈加重的趋势     

老年冠心病心功能不全患者血浆白细胞介素-6浓度的变化

目的 :观察老年冠心病心功能不全患者血浆白细胞介素 6 (interleukin - 6 ,IL - 6 )浓度的变化。方法 :选择老年冠心病心功能不全患者 48例、心功能正常者 15例及健康老年人 30例 ,采用酶联免疫吸附法测定其血浆IL - 6浓度。结果 :冠心病心功能不全组血浆IL - 6浓度较冠心病心功能正常组及健康对照组明显增高 (均P <0 .0 5 ) ,而冠心病心功能正常组与健康对照组之间无明显差异 (P >0 .0 5 ) ;血浆IL - 6浓度与左室射血分数呈负相关 (r =- 0 .6 0 ,P <0 .0 1) ;因心功能不全恶化再入院患者血浆IL - 6浓度高于未再入院患者 (P <0 .0 1)。结论 :IL - 6具有判断病情、评价预后的价值     

Effects of diuretics on intradialytic hypotension in maintenance dialysis patients: a systematic review and meta-analysis

Purpose

Intradialytic hypotension (IDH) is a serious complication in dialysis patients. Diuretics might reduce the incidence of IDH by decreasing ultrafiltration. However, the effect of diuretics on IDH in maintenance dialysis patients is still unclear.

Methods

We searched Medline, Embase, the Cochrane Library, China National Knowledge Infrastructure and clinical trials registries from 1945 to May 2019. Randomized controlled trials (RCTs) or observational studies about IDH in maintenance dialysis with diuretics were included.

Results

Seven studies including 28,226 patients were included, of which 4 were RCTs involving mineralocorticoid receptor antagonists (MRAs) and 3 were observational studies involving loop diuretics. There was a trend that a lower incidence rate of IDH in maintenance dialysis patients who used loop diuretics than control, although the result was not statistically significant (OR 0.65, 95% CI 0.34–1.22, P?=?0.18). Similarly, lower incidence rate of all-cause mortality (OR 0.92, 95% CI 0.87–0.99; P?=?0.02) and cardiovascular (CV) mortality (OR 0.86, 95% CI 0.75–0.99, P?=?0.03) in dialysis patients who used loop diuretics than control. On the contrary, there were no significant difference in the incidence of IDH (OR 1.35, 95% CI 0.78–2.34, P?=?0.29) and all-cause mortality (OR 0.73, 95% CI 0.26–2.01; P?=?0.54) and CV mortality (OR 0.57, 95% CI 0.14–2.25; P?=?0.42) in maintenance dialysis patients who used MRAs compared with control.

Conclusion

Loop diuretics, but not MRAs, might have a potential benefit to reduce the incidence rate of IDH, all-cause mortality and CV mortality. More high-quality studies are needed to strengthen the arguments.

     

Effect of using diode laser on Enterococcus faecalis and its lipoteichoic acid (LTA) in chronic apical periodontitis

Lasers in Medical Science - The purpose of this study was to evaluate the effect of diode laser irradiation on Enterococcus faecalis (E. faecalis) and its lipoteichoic acid (LTA). Ninety-six...     

A retrospective study of neck rejuvenation using a noninsulated microneedle radiofrequency in Chinese subjects

Lasers in Medical Science - Large-scale long-term retrospective study of noninsulated microneedle radiofrequency treatment on neck rejuvenation is lacking. We conducted a 3-year retrospective...     

The association between plant-based diet and erectile function in Chinese young healthy men: A population-based study

The study was designed and conducted to evaluate the plant-based diet status and its association with erectile function (EF) in Chinese young healthy men. From July 2018 to May 2020, 116 objectively proved physically and psychologically healthy men were selected. Clinical questionnaires, detailed physical examinations and blood tests were all assessed. An overall plant-based diet index (PDI) and a healthful plant-based diet index (hPDI) were developed from each participant to measure plant-based diet quantitatively. The EF was measured by both the International Index of Erectile Function-5 (IIEF-5) and the surrogated measures of endothelial function, peripheral levels of nitric oxide (NO) and E-selectin. In subjects, the mean PDI and hPDI were 53.8 ± 8.2 and 54.7 ± 8.9 respectively. Results of multivariate analysis showed that both PDI and hPDI were negatively associated with BMI (all p < .05), but had no relationships with NO, E-selectin, TT levels and IIEF-5 scores (all p > .05). In a subgroup of male population, Chinese young healthy men, the plant-based diet, measured by PDI and hPDI, was not related to erectile function. The population can adhere to plant-based diet to keep healthy without concerns of negative influence on erectile function.     

股骨颈骨折不同角度固定的生物力学比较研究

本文通过测量２０个股骨上段标本，Ｘ线片的压力骨小梁系统，按照其骨小梁系统采用低角度固定其股骨颈骨折标本，以临床常用角度固定的股骨颈骨折标本作为对照组，进行静力学测定。股骨上段骨小梁系统与股骨纵轴线所成角度均数为１５４．７±１．９度，骨小梁系统与股骨外侧骨皮质交点到大转子距离均数为７．３±１．０ｃｍ。低角度固定组承载力及最大承载力明显大于对照组（Ｐ＜０．０５），且有更小的旋转移位（Ｐ＜０．０５）。本研究将低角度固定概念量化，对股骨颈骨折内固定的使用有显著的临床指导意义。