The use of iodine-125 （L251） in cancer treatment has been shown to relieve patients＇ pain. Consid- ering dorsal root ganglia are critical for neural transmission between the peripheral and central nervous systems, ...The use of iodine-125 （L251） in cancer treatment has been shown to relieve patients＇ pain. Consid- ering dorsal root ganglia are critical for neural transmission between the peripheral and central nervous systems, we assumed that 125I could be implanted into rat dorsal root ganglia to provide relief for neuropathic pain. 125I seeds with different radioactivity （0, 14.8, 29.6 MBq） were im- planted separately through L4-5 and L5-6 intervertebral foramen into the vicinity of the L5 dorsal root ganglion, von Frey hair results demonstrated the mechanical pain threshold was elevated after implanting 125I seeds from the high radioactivity group. Transmission electron microscopy revealed that nuclear membrane shrinkage, nucleolar margination, widespread mitochondrial swelling, partial vacuolization, lysosome increase, and partial endoplasmic reticulum dilation were visible at 1,440 hours in the low radioactivity group and at 336 hours in the high radio- activity group. Abundant nuclear membrane shrinkage, partial fuzzy nuclear membrane and endoplasmic reticulum necrosis were observed at 1,440 hours in the high radioactivity group. No significant difference in combined behavioral scores was detected between preoperation and postoperation in the low and high radioactivity groups. These results suggested that the mechan- ical pain threshold was elevated after implanting 125I seeds without influencing motor functions of the hind limb, although cell injury was present.展开更多
An experimental model of brachial plexus root avulsion injury of cervical dorsal C5-6 was established in adult and neonatal rats.Real-time PCR showed that the levels of brain-derived neurotrophic factor,nerve growth f...An experimental model of brachial plexus root avulsion injury of cervical dorsal C5-6 was established in adult and neonatal rats.Real-time PCR showed that the levels of brain-derived neurotrophic factor,nerve growth factor and neurotrophin-3 in adult rats increased rapidly 1 day after brachial plexus root avulsion injury,and then gradually decreased to normal levels by 21 days.In neonatal rats,levels of the three neurotrophic factors were decreased on the first day after injury,and then gradually increased from the seventh day and remained at high levels for an extended period of time.We observed that greater neural plasticity contributed to better functional recovery in neonatal rats after brachial plexus root avulsion injury compared with adult rats.Moreover, immunohistochemical staining showed that the number of bromodeoxyuridine/nestin-positive cells increased significantly in the spinal cords of the adult rats compared with neonatal rats after brachial plexus root avulsion injury.In addition,the number of bromodeoxyuridine/glial fibrillary acidic protein-positive cells in adult rats was significantly higher than in neonatal rats 14 and 35 days after brachial plexus injury.Bromodeoxyuridine/β-tubulin-positive cells were not found in either adult or neonatal rats.These results indicate that neural stem cells differentiate mainly into astrocytes after brachial plexus root avulsion injury.Furthermore,the degree of neural stem cell differentiation in neonatal rats was lower than in adult rats.展开更多
目的探讨经Wiltse入路结合改良经椎间孔腰椎体间融合术(TLIF)治疗中重度腰椎滑脱症的临床疗效。方法回顾性分析2014年1月至2017年1月我科收治并获得随访的51例中重度腰椎滑脱症患者的病历资料,均采用Wiltse入路结合改良TLIF治疗。统计...目的探讨经Wiltse入路结合改良经椎间孔腰椎体间融合术(TLIF)治疗中重度腰椎滑脱症的临床疗效。方法回顾性分析2014年1月至2017年1月我科收治并获得随访的51例中重度腰椎滑脱症患者的病历资料,均采用Wiltse入路结合改良TLIF治疗。统计患者手术时间、术中出血量及术后并发症情况,影像学观察椎间隙高度、滑脱角、滑脱率及融合率,采用腰痛和下肢痛视觉疼痛模拟量表(VAS)及Oswestry功能障碍指数(ODI)评定临床疗效。结果患者手术时间99~202 min,平均(115.0±16.7) min;术中出血量101~320 m L,平均(170.8±63.6) m L。随访13~36个月,平均(21.6±5.7)个月。共3例患者出现并发症,其中1例硬脊膜撕裂,2例术后出现L5神经根麻痹症状。患者腰痛VAS评分、下肢痛VAS评分及ODI分别由术前的(6.7±1.8)分、(6.8±2.0)分、(61.7±11.6)%下降至末次随访时的(2.2±1.0)分、(1.3±1.2)分、(18.5±5.6)%,椎间隙高度由术前的(5.17±1.72) mm提高至末次随访时的(10.23±1.01) mm,滑脱角和滑脱率分别从术前的(7.03±1.82)°和(49.8±6.7)%下降至末次随访时的(1.23±0.68)°和(10.1±3.8)%,差异均有极显著性统计学意义(P <0.01)。术后6个月49例患者获得坚强融合,2例可能融合,融合率为96.1%。结论经Wiltse入路结合改良TLIF对腰椎后部肌肉及后方韧带复合体破坏小,是一种治疗中重度腰椎滑脱症的理想微创手术方法。展开更多
基金supported by Technology Foundation for Selected Overseas Chinese Scholar,Ministry of Personnel of China,2011,Ren 1144
文摘The use of iodine-125 （L251） in cancer treatment has been shown to relieve patients＇ pain. Consid- ering dorsal root ganglia are critical for neural transmission between the peripheral and central nervous systems, we assumed that 125I could be implanted into rat dorsal root ganglia to provide relief for neuropathic pain. 125I seeds with different radioactivity （0, 14.8, 29.6 MBq） were im- planted separately through L4-5 and L5-6 intervertebral foramen into the vicinity of the L5 dorsal root ganglion, von Frey hair results demonstrated the mechanical pain threshold was elevated after implanting 125I seeds from the high radioactivity group. Transmission electron microscopy revealed that nuclear membrane shrinkage, nucleolar margination, widespread mitochondrial swelling, partial vacuolization, lysosome increase, and partial endoplasmic reticulum dilation were visible at 1,440 hours in the low radioactivity group and at 336 hours in the high radio- activity group. Abundant nuclear membrane shrinkage, partial fuzzy nuclear membrane and endoplasmic reticulum necrosis were observed at 1,440 hours in the high radioactivity group. No significant difference in combined behavioral scores was detected between preoperation and postoperation in the low and high radioactivity groups. These results suggested that the mechan- ical pain threshold was elevated after implanting 125I seeds without influencing motor functions of the hind limb, although cell injury was present.
基金supported by the Young Scientist Fund of Jilin Provincial Science and Technology Department,No.20090183
文摘An experimental model of brachial plexus root avulsion injury of cervical dorsal C5-6 was established in adult and neonatal rats.Real-time PCR showed that the levels of brain-derived neurotrophic factor,nerve growth factor and neurotrophin-3 in adult rats increased rapidly 1 day after brachial plexus root avulsion injury,and then gradually decreased to normal levels by 21 days.In neonatal rats,levels of the three neurotrophic factors were decreased on the first day after injury,and then gradually increased from the seventh day and remained at high levels for an extended period of time.We observed that greater neural plasticity contributed to better functional recovery in neonatal rats after brachial plexus root avulsion injury compared with adult rats.Moreover, immunohistochemical staining showed that the number of bromodeoxyuridine/nestin-positive cells increased significantly in the spinal cords of the adult rats compared with neonatal rats after brachial plexus root avulsion injury.In addition,the number of bromodeoxyuridine/glial fibrillary acidic protein-positive cells in adult rats was significantly higher than in neonatal rats 14 and 35 days after brachial plexus injury.Bromodeoxyuridine/β-tubulin-positive cells were not found in either adult or neonatal rats.These results indicate that neural stem cells differentiate mainly into astrocytes after brachial plexus root avulsion injury.Furthermore,the degree of neural stem cell differentiation in neonatal rats was lower than in adult rats.
文摘目的探讨经Wiltse入路结合改良经椎间孔腰椎体间融合术(TLIF)治疗中重度腰椎滑脱症的临床疗效。方法回顾性分析2014年1月至2017年1月我科收治并获得随访的51例中重度腰椎滑脱症患者的病历资料,均采用Wiltse入路结合改良TLIF治疗。统计患者手术时间、术中出血量及术后并发症情况,影像学观察椎间隙高度、滑脱角、滑脱率及融合率,采用腰痛和下肢痛视觉疼痛模拟量表(VAS)及Oswestry功能障碍指数(ODI)评定临床疗效。结果患者手术时间99~202 min,平均(115.0±16.7) min;术中出血量101~320 m L,平均(170.8±63.6) m L。随访13~36个月,平均(21.6±5.7)个月。共3例患者出现并发症,其中1例硬脊膜撕裂,2例术后出现L5神经根麻痹症状。患者腰痛VAS评分、下肢痛VAS评分及ODI分别由术前的(6.7±1.8)分、(6.8±2.0)分、(61.7±11.6)%下降至末次随访时的(2.2±1.0)分、(1.3±1.2)分、(18.5±5.6)%,椎间隙高度由术前的(5.17±1.72) mm提高至末次随访时的(10.23±1.01) mm,滑脱角和滑脱率分别从术前的(7.03±1.82)°和(49.8±6.7)%下降至末次随访时的(1.23±0.68)°和(10.1±3.8)%,差异均有极显著性统计学意义(P <0.01)。术后6个月49例患者获得坚强融合,2例可能融合,融合率为96.1%。结论经Wiltse入路结合改良TLIF对腰椎后部肌肉及后方韧带复合体破坏小,是一种治疗中重度腰椎滑脱症的理想微创手术方法。
