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91.
92.
CT引导下颈侧入路舌咽神经毁损术 总被引:4,自引:1,他引:3
目的探讨CT引导下颈侧入路舌咽神经毁损术对舌咽神经痛及舌咽神经支配区顽固性疼痛的疗效. 方法 A组16例舌咽神经痛及B组12例舌咽神经支配区顽固性疼痛,采用CT引导经皮穿刺定位于茎突前缘第2颈椎水平,注入局麻药仅阻滞舌咽神经,注入7%苯酚甘油溶液0.8 ml. 结果 A组完全缓解率87.5%(14/16),总有效率100%(16/16),随访6个月无复发;B组完全缓解率50%(6/12),总有效率83.3%(10/12),随访6个月,复发6例(50.0%).2组均无严重并发症. 结论 CT介导下颈侧入路舌咽神经毁损术具有疗效可靠,定位准确,操作安全的特点,并有效减少严重并发症的发生. 相似文献
93.
蒋丽君 《中国中医药信息杂志》2005,12(9):17-18
目的观察按压骨穴对围绝经期妇女心脏植物神经功能的影响。方法设按压骨穴组30例、空白对照组30例。用美国BraemarDL700型动态心电检测仪,检测试验前后的心率变异性(HRV):TF代表总频,LF代表交感神经活性,HF代表迷走神经活性,LF/HF代表交感神经与迷走神经均衡性。结果按压骨穴后4项指标均有显著下降(P<0.01,P<0.05)。空白对照组变化不显著(P>0.05)。骨穴组4项指标的变化率与对照组比较均有显著性差异(P<0.01)。结论按压骨穴有抑制心脏交感神经活性的良性调整作用,此效应具有相对的特异性。 相似文献
94.
95.
Elemental composition and water content of myelinated axons and glial cells in rat central nervous system 总被引:1,自引:0,他引:1
The distribution of elements (e.g. Na, Cl, K) and water in CNS cells is unknown. Therefore, electron probe X-ray microanalysis (EPMA) was used to measure water content and concentrations (mmol/kg dry or wet weight) of Na, Mg, P, S, Cl, K and Ca in morphological compartments of myelinated axons and glial cells from rat optic nerve and cervical spinal cord white matter. Axons in both CNS regions exhibited similar water content ( 90%), and relatively high concentrations (wet and dry weight) of K with low Na and Ca levels. The K content of axons was related to diameter, i.e. small axons in spinal cord and optic nerve had significantly less (25–50%) K than larger diameter axons from the same CNS region. The elemental composition of spinal cord mitochondria was similar to corresponding axoplasm, whereas the water content (75%) of these organelles was substantially lower than that of axoplasm. In glial cell cytoplasm of both CNS areas, P and K (wet and dry weight) were the most abundant elements and water content was approximately 75%. CNS myelin had predominantly high P levels and the lowest water content (33–55%) of any compartment measured. The results of this study demonstrate that each morphological compartment of CNS axons and glia exhibits a characteristic elemental composition and water content which might be related to the structure and function of that neuronal region. 相似文献
96.
Analysis of reflex activity in cardiac sympathetic nerve induced by myelinated phrenic nerve afferents 总被引:2,自引:0,他引:2
Electrical stimulation of the phrenic nerve afferents evoked excitatory responses in the right inferior cardiac sympathetic nerve in chloralose-anaesthetized cats. The reflex was recorded in intact and spinal cats. The latency and threshold of the volley recorded from the phrenic nerve as well as of the cord dorsum potentials evoked by electrical stimulation of the phrenic nerve indicated that group III afferents were responsible for this reflex. The phrenicocardiac sympathetic reflex recorded in intact cats was followed by a silent period. The maximum amplitude of the reflex discharges was 800 microV, the latency was 83 ms and the central transmission time 53 ms. Duration of the silent period lasted up to 0.83 s. In spinal cats the reflex was recorded 5.5-8 h after spinalization. The maximum amplitude of the spinal reflex discharges ranged from 22 to 91 microV and the latency from 36 to 66 ms. 相似文献
97.
周围神经65KD蛋白单克隆抗体的制备 总被引:1,自引:0,他引:1
神经化学诱向生长的研究是神经科学中的一个重要方向。本文以自然系统聚丙酰胺凝胶电泳,分离提取坐骨神经损伤后的远侧端中具有诱神经生长作用的65KD蛋白。以该蛋白作为抗原免疫BALB/C小鼠,通过杂交瘤技术获得一株(VI5E)稳定分泌单克隆抗体的杂交瘤细胞株。免疫印迹法表明,该单克隆抗体特异性地与65KD区带结合。免疫组化法显示,在损伤后的坐骨神经远侧端组织中的雪旺氏细胞呈阳性反应。单克隆抗体的制备为进一步阐明该蛋白的生物学特性奠定了基础。 相似文献
98.
Kim C. Donaghue M.M. Pena A.T.W. Fung M. Bonney N.J. Howard M. Silink J. Schwingshandl 《Diabetic medicine》1995,12(10):868-873
The study aimed to compare the longitudinal assessment of autonomic nerve function by computerized infrared pupillometry and standard cardiovascular tests in adolescents with diabetes. Adolescents (n = 150) were assessed at two time points (T1 and T2). The median time interval between assessments was 1.5 (range 0.9–3) years. At T1 the median age was 14.5 (range 8.3–19.5) years and the median duration was 6.5 (range 1.1–16) years. The pupillary variables assessed included the resting pupil diameter, the maximum constriction velocity, and the reflex amplitude of constriction. Heart rate reflexes were assessed in response to deep breathing, the Valsalva manoeuvre, and on standing from a lying position (30/15 ratio). Between visits there was a significant decrease in maximum constriction velocity (6.0 mm s?1 vs 6.3 mm s?1, p = 0.0001) and resting pupil diameter (6.2 mm vs 6.3 mm, p = 0.001). At reassessment pupillary abnormalities increased from 32 (21 %) to 45 (30%), with 17 (54 %) of the initial abnormalities persisting. Adolescents with abnormally slow maximum constriction velocity compared to those with normal maximum constriction velocity had a higher glycated haemoglobin (HbA1c%) at T2 (p = 0.02) and between assessments (p = 0.01). Cardiovascular test abnormalities did not increase between visits and the persistence of initial abnormalities was low (21 %). In summary, pupillometry appears a more sensitive test of autonomic nerve dysfunction in adolescents with diabetes than assessment of cardiovascular reflexes. 相似文献
99.
Lyme disease is a cause of illness involving multiple organ systems, including, in 10–15 % of cases, the nervous system.
Peripheral radiculoneuritis, cranial neuritis, encephalitis and myelitis are among the neurological manifestations found in
the second and third stages. We present the MRI findings in isolated oculomotor nerve involvement by Lyme disease and discuss
the differential diagnosis.
Received: 14 June 1995 Accepted: 16 January 1996 相似文献
100.
The cell body size (cross-sectional area) of S100-immunoreactive (-ir) primary neurons was measured in the trigeminal (TG) and lumbar dorsal root ganglia (DRG). About a half of neurons exhibited S100-immunoreactivity (-ir) in the DRG (44.0%) and TG (59.0%). DRG neurons with cell bodies >1200 μm2 mostly exhibited S100-ir (96.5%), whereas S100-ir DRG neurons <600 μm2 were rare (8.0%). 36.6% of DRG neurons in the cell size range 600–1200 μm2 showed the ir. TG neurons >800 μm2 mostly exhibited S100-ir (93.1%), whereas those <400 μm2 were devoid of it (positive cells 10.5%). 58.3% of TG cells in the range 400–800 μm2 contained S100-ir. Double-immunofluorescence method revealed the co-expression of S100 and other calcium-binding proteins. Parvalbumin-ir neurons mostly exhibited S100-ir in the DRG (97.4%) and TG (97.0%). The co-expression of S100 and calbindin D-28k was very rare in the DRG, because the DRG contained few calbindin D-28k-ir neurons. Unlike in the DRG, numerous neurons co-expressed S100- and calbindin D-28k-ir in the TG. Most calbindin D-28k-ir TG neurons were also immunoreactive for S100 (90.7%). Sub-populations of calretinin (CR)-ir neurons co-expressed S100-ir in both the DRG (68%) and TG (50.0%). Virtually all CR-ir neurons >1400 μm2 co-expressed S100-ir in the DRG (100%) and TG (95.9%). CR-ir neurons <800 μm2 were rarely exhibited S100-ir (DRG 18.0%, TG 21.9%). 71.3 and 60.5% of CR-ir neurons in the range 800–1400 μm2 co-expressed S100-ir in the DRG and TG, respectively. The present study indicates that S100 is closely correlated to the primary neuronal cell size in the DRG and TG. 相似文献