ObjectiveTo explore the biological functions of Kip1 ubiquitylation-promoting complex 2 (KPC2) in the repair process of spinal cord injury (SCI) by studying the expression and cellular localization of KPC2 in rat SCI models. MethodsFifty-six adult Sprague-Dawley rats were randomly divided into 2 groups: in the control group (n=7), simple T9 laminectomy was performed;in the experimental group (n=49), the SCI model was established at T9, 7 rats were used to detect follow indexs at 6 hours, 12 hours, 1 day, 3 days, 5 days, 7 days, and 14 days after SCI. Western blot analysis was used to detect the protein expressions of P27kip1, KPC2, CyclinA and proliferating cell nuclear antigen (PCNA) after SCI. Immunohistochemistry was used to observed the cellular localization of KPC2 after SCI, double-labeling immunofluorescence staining to observe the co-localization of KPC2 with neuronal nuclei (NeuN), glial fibrillary acidic protein (GFAP) and PCNA. in vitro astrocytes proliferation model was used to further validate these results, Western blot to detect KPC2, P27kip1, and PCNA expressions. The interaction of P27kip1, KPC1, and KPC2 in cell proliferation was analyzed by co-immunoprecipitation. ResultsThe Western blot analysis showed a significant down-regulation of P27kip1 and a concomitant up-regulation of KPC2, CyclinA, and PCNA after SCI. Immunohistochemistry staining revealed a wide distribution of KPC2 positive signals in the gray matter and white matter of the spinal cord. The number of KPC2 positive cells in the experimental group was significantly higher than that in the control group (t=10.982, P=0.000). Double-labeling immunofluorescence staining revealed the number of KPC2/NeuN co-expression cells in the gray matter of spinal cord was (0.43±0.53)/visual field in the control group and (0.57±0.53)/visual field in the experimental group, showing no significant difference (t=0.548, P=0.604);in the white matter of spinal cord, the number of KPC2/PCNA co-expression cells was (3.86±0.90)/visual field in the control group and (0.71±0.49)/visual field in the experimental group, showing significant difference (t=7.778, P=0.000). And then, the number of KPC2/PCNA co-expression cells were (0.57±0.53)/visual field in the control group and (5.57±1.13)/visual field in the experimental group, showing significant difference (t=8.101, P=0.000). Concomitantly, there was a similar kinetic in proliferating astrocytes in vitro. The Western blot analysis showed a significant down-regulation of P27kip1 and a concomitant up-regulation of KPC2 and PCNA after serum stimulated. Co-immunoprecipitation demonstrated increased interactions between P27kip1, KPC1, and KPC2 after stimulation. ConclusionThe up-regulated expression of KPC2 after SCI is related to the down-regulation of P27kip1, this event may be involved in the proliferation of astrocytes after SCI.
Objective To investigate the impact of joint capsule repair and external rotators suture on the prognosis in primary total hip arthroplasty (THA) by posterolateral approach. Methods Between January 2006 and June 2009, 159 patients with femoral neck fracture underwent primary THA by posterolateral approach, and were divided into 4 groups according to different treatments: joint capsule repair and external rotators suture were given in group A (n=38), only joint capsule repair in group B (n=39), only external rotators suture in group C (n=41), and no joint capsule repair or external rotators suture in group D (n=41). There was no significant difference in gender, age, cause of injure, disease duration, type of fracture, combined medical disease, or prosthesis selection among 4 groups (P gt; 0.05). The bleeding volume, drainage, postoperative hip dislocation rate, hip Harris score, and the hip range of motion (ROM) in internal rotation and external rotation were compared. Results There was no significant difference in operative time, bleeding volume, or drainage among 4 groups (P gt; 0.05). Postoperative hip dislocation occurred in 0, 0, 4 (9.8%), and 4 (9.8%) cases of groups A, B, C, and D, respectively, showing significant difference in incidence of postoperative hip dislocation among 4 groups (χ2=7.910, P=0.048). The hip Harris scores were significantly improved after operation when compared with preoperative scores in 4 groups (P lt; 0.05). Significant differences were found in hip Harris score at 6 weeks and 6 months after operation among 4 groups (P lt; 0.05); group D was significantly lower than groups A, B, and C, and groups B and C were significantly lower than group A (P lt; 0.05). There was no significant difference in the hip ROM in internal rotation among 4 groups at 6 weeks and 6, 12 months after operation (P gt; 0.05); but the hip ROM in external rotation were significantly bigger in groups A and C than in groups B and D at 6 weeks and 6 months after operation (P lt; 0.05). Conclusion Joint capsule repair and external rotators suture in primary THA by posterolateral approach do not increase the bleeding volume and drainage, but can reduce the early postoperative hip dislocation risk, increase the Harris score, and recover the external rotation function of involved hip. So joint capsule and external rotators should be repaired in THA by posterolateral approach.
目的 探讨糖耐量异常患者的焦虑抑郁状况及其与生活质量的相关性，为糖尿病相关心理问题的早期识别与干预提供参考。 方法 以2010年1月－2012年6月糖耐量异常患者145例为试验组，健康人群147例作为对照组，两组分别填写焦虑自评量表（SAS）和抑郁自评量表（SDS），试验组还需填写世界卫生组织生活质量测定量表简表（WHOQOL-BREF）并对其焦虑、抑郁得分与WHOQOL-BREF的各因子的相关性进行分析。 结果 145例患者中有51例（35.2%）存在抑郁情绪，47例（32.4%）存在焦虑情绪，焦虑合并抑郁情绪者29例（20%）。糖耐量异常患者焦虑、抑郁评分明显高于对照组（P＜0.01），其生活质量多个领域评分低于对照组（P＜0.01），且生活质量与焦虑、抑郁情绪存在负相关（P＜0.05）。 结论 糖耐量异常患者焦虑、抑郁情绪明显高于正常人群，其生活质量偏低，提示了对在该人群进行早期心理干预的必要性。
ObjectiveTo explore the association between paroxetine (Seroxat) and level of blood sugar and endocrine hormones in pre-diabetes patients with anxiety and depression. MethodsFifty-four pre-diabetes patients with anxiety and depression diagnosed from January 2010 to December 2012 were recruited. The self-rating anxiety scale (SAS) and self-rating depression scale (SDS) were used to assess depression and anxiety. All the patients were treated by paroxetine. The glucose tolerance test (OGTT), ACTH and cortisol were tested in patients at baseline and within 24 weeks. ResultsAfter 24 weeks' treatment, the level of anxiety and depression as well as the OGTT 0.5 h (0.5 h PG), OGTT 1 h (1 h PG), OGTT 2 h (2 h PG), glycated hemoglobin (HbA1c), adrenocorticotropic hormone (ACTH) and cortisol were significantly decreased (P<0.05 or P<0.01). The glycated HbA1c had a positive correlation with adrenocorticotropic hormone (ACTH) and cortisol (F). Before and after treatment, the reduced rate of ACTH and reduced rate of cortisol respectively exhibited a positive correlation with the reduced rate of HbA1c, reduced rate of SAS and reduced rate of SDS. ConclusionAnti-anxiety depression treatment can lower blood sugar level in pre-diabetes patients with anxiety and depression significantly, which may be related to the activity of HPA axis.