目的 研究术前颈椎MRI信号改变对全椎板切除减压术治疗颈椎后纵韧带骨化症疗效的影响.方法 纳入2015年2月~2017年2月行全椎板切除减压术治疗的94例颈椎后纵韧带骨化症(Ossification of the Posterior Longitudinal Ligament of the Cerv...目的 研究术前颈椎MRI信号改变对全椎板切除减压术治疗颈椎后纵韧带骨化症疗效的影响.方法 纳入2015年2月~2017年2月行全椎板切除减压术治疗的94例颈椎后纵韧带骨化症(Ossification of the Posterior Longitudinal Ligament of the Cervical Spine,C-OPLL)患者,术前进行MRI检查,根据颈椎MRI矢状位髓内T2高信号累及范围分为多节段组(24例)、单节段组(36例)、正常组(34例),对三组手术效果以及并发症情况进行比较.结果 三组的手术时间、手术引流量、出血量、住院时间差异无统计学意义(P>0.05);三组术后JOA评分均显著升高,且术后1、3、12个月时,多节段组JOA评分及JOA改善率均显著低于单节段组与正常组,差异有统计学意义(P<0.05).末次随访时,多节段组的手术优良率显著低于单节段组与正常组(P<0.05);三组并发症发生情况差异无统计学意义(P>0.05).结论 全椎板切除减压术能显著改善C-OPLL患者颈椎功能,术前脊髓信号呈多节段改变时会影响手术效果,可能与髓内水肿、炎症等有关.展开更多
Background &Aims: Evidence suggests that postprandial platelet-depleted plasma 5-hydroxytryptamine (5-HT) concentrations may be abnormal in irritable bowel syndrome (IBS). However, interpretation of the data has b...Background &Aims: Evidence suggests that postprandial platelet-depleted plasma 5-hydroxytryptamine (5-HT) concentrations may be abnormal in irritable bowel syndrome (IBS). However, interpretation of the data has been hampered by the variable methodology and rather small numbers used in previous studies. Therefore, the aim of this study was to measure concentrations of platelet-depleted plasma 5-HT and its metabolite 5-HIAA under fasting and fed conditions in a large group of patients with diarrhea-predominant (d-) and constipation-predominant (c-) IBS, compared with controls. The ratio of plasma 5-HIAA:5-HT and platelet stores was also assessed. Methods: Twenty-nine c-IBS patients (aged, 19-53 years), 55 d-IBS patients (aged, 19-52 years), and 35 healthy volunteers (aged, 18-46 years) had platelet-depleted plasma 5-HT/5-HIAA concentrations measured using reverse-phase, high-performance liquid chromatography with fluorimetric detection before and after a standard meal. Results: d-IBS patients had raised platelet-depleted plasma 5-HT concentrations under fasting and fed conditions (P < .05). However, the postprandial relative to fasting concentration was similar to controls. In contrast, c-IBS patients failed to show an increase in platelet-depleted plasma 5-HT concentration with meal ingestion compared with controls (P < .01). c-IBS was associated with decreased 5-HIAA (P < .01) but normal 5-HIAA:5-HT ratio and d-IBS with normal 5-HIAA concentrations but reduced 5-HIAA:5-HT ratio (P < .005). c-IBS but not d-IBS patients had increased platelet 5-HT. Conclusions: These results support the concept that d-IBS is characterized by reduced 5-HT reuptake, whereas impaired release may be a feature of c-IBS. These results also provide a rational basis for current pharmacologic approaches involving modulation of different 5-HT receptors in c-and d-IBS.展开更多
文摘目的 研究术前颈椎MRI信号改变对全椎板切除减压术治疗颈椎后纵韧带骨化症疗效的影响.方法 纳入2015年2月~2017年2月行全椎板切除减压术治疗的94例颈椎后纵韧带骨化症(Ossification of the Posterior Longitudinal Ligament of the Cervical Spine,C-OPLL)患者,术前进行MRI检查,根据颈椎MRI矢状位髓内T2高信号累及范围分为多节段组(24例)、单节段组(36例)、正常组(34例),对三组手术效果以及并发症情况进行比较.结果 三组的手术时间、手术引流量、出血量、住院时间差异无统计学意义(P>0.05);三组术后JOA评分均显著升高,且术后1、3、12个月时,多节段组JOA评分及JOA改善率均显著低于单节段组与正常组,差异有统计学意义(P<0.05).末次随访时,多节段组的手术优良率显著低于单节段组与正常组(P<0.05);三组并发症发生情况差异无统计学意义(P>0.05).结论 全椎板切除减压术能显著改善C-OPLL患者颈椎功能,术前脊髓信号呈多节段改变时会影响手术效果,可能与髓内水肿、炎症等有关.
文摘Background &Aims: Evidence suggests that postprandial platelet-depleted plasma 5-hydroxytryptamine (5-HT) concentrations may be abnormal in irritable bowel syndrome (IBS). However, interpretation of the data has been hampered by the variable methodology and rather small numbers used in previous studies. Therefore, the aim of this study was to measure concentrations of platelet-depleted plasma 5-HT and its metabolite 5-HIAA under fasting and fed conditions in a large group of patients with diarrhea-predominant (d-) and constipation-predominant (c-) IBS, compared with controls. The ratio of plasma 5-HIAA:5-HT and platelet stores was also assessed. Methods: Twenty-nine c-IBS patients (aged, 19-53 years), 55 d-IBS patients (aged, 19-52 years), and 35 healthy volunteers (aged, 18-46 years) had platelet-depleted plasma 5-HT/5-HIAA concentrations measured using reverse-phase, high-performance liquid chromatography with fluorimetric detection before and after a standard meal. Results: d-IBS patients had raised platelet-depleted plasma 5-HT concentrations under fasting and fed conditions (P < .05). However, the postprandial relative to fasting concentration was similar to controls. In contrast, c-IBS patients failed to show an increase in platelet-depleted plasma 5-HT concentration with meal ingestion compared with controls (P < .01). c-IBS was associated with decreased 5-HIAA (P < .01) but normal 5-HIAA:5-HT ratio and d-IBS with normal 5-HIAA concentrations but reduced 5-HIAA:5-HT ratio (P < .005). c-IBS but not d-IBS patients had increased platelet 5-HT. Conclusions: These results support the concept that d-IBS is characterized by reduced 5-HT reuptake, whereas impaired release may be a feature of c-IBS. These results also provide a rational basis for current pharmacologic approaches involving modulation of different 5-HT receptors in c-and d-IBS.
