丘脑底核电刺激治疗苍白球毁损术后的帕金森病(12例报告)

目的探讨帕金森病(Parkinson's disease,PD)苍白球腹后部毁损术(posteroventral pallidotomy,PVP)后再行丘脑底核(subthalamic nucleus,STN)脑深部电刺激术(deep brain stimulation,DBS)的可行性、术中电生理学特点和治疗结果。方法应用MR和微电极记录技术进行靶点定位,对12例单侧PVP术后症状再次加重的PD患者实施STN-DBS手术,其中4例行毁损灶对侧的STN-DBS,8例行双侧STN-DBS。结果STN-DBS对本组12例PD患者症状有不同程度的改善,双侧STN-DBS的效果尤为明显,术后3个月的UPDRS运动及ADL评分较术前明显减少(P<0．05或0．01),美多巴的用量明显减少(P<0．01),无明显术后并发症。术中电生理记录显示毁损灶同侧的细胞放电明显低于正常情况。结论曾行单侧PVP的PD患者如面临二次手术,可以选择DBS手术,以双侧STN的DBS效果最好,可减少药物用量。     

Thalamic, pallidal, or subthalamic surgery for Parkinson's disease?

Levodopa is a highly effective treatment of all motor symptoms of Parkinson's disease. However, long-term treatment with levodopa can lead to motor fluctuations and levodopa-induced dyskinesias. Motor side effects can become so disabling as to warrant surgical treatment. Both ablative surgery and deep brain stimulation (DBS) for Parkinson's disease (PD) can be performed in different target areas. Thalamic surgery mainly improves tremor, and to a lesser extent also rigidity and dyskinesias, whereas pallidal and subthalamic nucleus surgery improves all motor symptoms and levodopa-induced dyskinesias. The efficacy and safety of unilateral pallidotomy is well established. DBS has a lower morbidity and is safe enough to be performed bilaterally. The subthalamic nucleus (STN) presently seems to be the most promising target for DBS in advanced stage PD.     

Bilateral pallidotomy for treatment of Parkinson's disease induced corticobulbar syndrome and psychic akinesia avoidable by globus pallidus lesion combined with contralateral stimulation

OBJECTIVE: Posteroventral pallidotomy (PVP) has proved to be an effective method for the treatment of Parkinson's disease. However, data on bilateral procedures are still limited. To assess the effects of bilateral globus pallidus (GPi) lesion and to compare it with a combination of unilateral GPi lesion plus contralateral GPi stimulation (PVP+PVS), an open blind randomised trial was designed. METHODS: A prospective series of patients with severe Parkinson's disease refractory to medical treatment, and severe drug induced dyskinesias, were randomised either to simultaneous bilateral PVP or simultaneous PVP+PVS. All patients were assessed with the core assessment programme for intracerebral transplantation (CAPIT), and a comprehensive neuropsychological and neuropsychiatric battery both before surgery and 3 months later. RESULTS: The severe adverse effects found in the first three patients subjected to bilateral PVP led to discontinuation of the protocol. All three patients developed depression and apathy. Speech, salivation, and swallowing, as well as freezing, walking, and falling, dramatically worsened. By contrast, all three patients undergoing PVP+PVS had a significant motor improvement. CONCLUSION: Bilateral simultaneous lesions within the GPi may produce severe motor and psychiatric complications. On the other hand, a combination of PVP+ PVS significantly improves parkinsonian symptoms not associated with the side effects elicited by bilateral lesions.     

Unilateral and bilateral pallidotomy for idiopathic Parkinson's disease: a case series of 115 patients.

Lesioning of the internal pallidum is known to improve the symptoms of idiopathic Parkinson's disease (PD) and alleviate dyskinesia and motor fluctuations related to levodopa therapy. The benefit obtained contralateral to a single lesion is insufficient in some cases when symptoms are bilaterally disabling. However, reports of unacceptably high rates of adverse effects after bilateral pallidotomy have limited its use in such cases. We report on the outcome of unilateral (UPVP) and bilateral (BPVP) posteroventral pallidotomy in a consecutive case series of 115 patients with PD in the United Kingdom and Australia. After 3 months, UPVP resulted in a 27% reduction in the off medication Part III (motor) Unified Parkinson's Disease Rating Scale score and abolition of dyskinesia in 40% of cases. For BPVP, these figures were increased to 31% and 63%, respectively. Follow-up of a smaller group to 12 months found the motor scores to be worsening but benefit to dyskinesia and activities of daily living was maintained. Speech was adversely affected after BPVP, although the change was small in most cases. Unilateral and bilateral pallidotomy can be performed safely without microelectrode localisation. Bilateral pallidotomy appears to be more effective, particularly in reducing dyskinesia; in our experience, the side effects have not been as high as reported by other groups.     

Deep brain stimulation of the subthalamic nucleus in Parkinson's disease: comparison of pre- and postoperative neuropsychological evaluation.

Deep brain stimulation (DBS) of the subthalamic nucleus (STN) is an effective treatment for the motor symptoms of advanced Parkinson's disease (PD). The aim of this study was to assess the effect of the bilateral surgical procedure and STN DBS on the neuropsychological functions. Twenty Parkinson's disease patients underwent a neuropsychological assessment before and 6 months after surgery in four different conditions: medication on (with levodopa) and medication off (without levodopa) during the preoperative period, medication on/stimulation on (levodopa plus stimulators switched on) and medication off/stimulation on (stimulators switched on without levodopa) during the postoperative period. We did not find any significant difference in the four conditions for all the neuropsychological tests, confirming the lack of an overall cognitive decline after surgery. From a neuropsychological point of view, these results seem to indicate that bilateral STN DBS is a safe treatment for advanced PD.     

Long-term efficacy of posteroventral pallidotomy in the treatment of Parkinson's disease

The authors describe results of unilateral posteroventral pallidotomy (PVP) in 89 patients with PD. At 3 months after surgery, 81.9% of the patients reported marked or moderate improvement in their parkinsonian symptoms. Postoperative Unified PD Rating Scale "off" state mean total motor score improved by 35.5% and the mean activities of daily living score by 33.7% (p <0.001). Improvements in parkinsonian symptoms were maintained in both"off" and "on" states in 62 patients at 12 months after PVP and in 41 patients who were followed for 18 months or longer (mean 26.6 months).     

Bilateral subthalamic nucleus stimulation after bilateral pallidotomies in a patient with advanced Parkinson's disease

A 54-year-old man with advanced Parkinson's disease (PD) presented to our institution in early 2000. He had undergone a right pallidotomy in 1994, a left pallidotomy in 1996, and bilateral subthalamic nucleus (STN) electrode implants in 1999. The patient had cervical myelopathy for which he had undergone neck surgery in 1998. We used the Unified Parkinson's Disease Rating Scale (UPDRS) to evaluate motor performance in four states: combinations of stimulation OFF or ON and medication OFF or ON. There was no significant change in motor UPDRS scores with STN stimulation or with medications. Multiple attempts to optimize stimulation parameters and medication dosages did not result in significant and sustained improvement in activities of daily living or motor performance. To our knowledge, this is the first reported case of bilateral STN stimulation after bilateral pallidotomies. The presence of cervical myelopathy and the limited response to anti-Parkinson medications in this patient underscores the importance of patient selection for functional neurosurgery in PD.     

Effects of bilateral stimulation of the subthalamic nucleus in patients with severe Parkinson's disease and motor fluctuations.

We present the efficacy and side effects of bilateral deep brain stimulation (DBS) of the subthalamic nuclei (STN) performed with a more simplified surgical procedure than described by the Grenoble group. A consecutive series of 26 patients with advanced and levodopa-responsive Parkinson's disease and motor complications was evaluated using the Unified Parkinson's Disease Rating Scale (UPDRS) part I-VI, timed tests, and a patient diary for 2 days concerning on-off phenomenon and dyskinesias. At 3 months, evaluation of stimulation by the UPDRS motor score was performed in a double-blind manner and a significant improvement of 57% was found. The results 12 months after surgery off medication showed significant improvement in both UPDRS motor score and activities of daily living of 64% and, on medication, a significant reduction of 86% in duration of dyskinesias and 83% in duration of off-periods. Reduction in medication was less than for other groups, probably because we used smaller doses of levodopa before the operation. No serious side effects were encountered. When the patients are carefully selected and followed up, bilateral DBS of STN is a significant progress in treatment of advanced idiopathic Parkinson's disease with levodopa-induced motor complications.     

微电极引导的苍白球腹后部毁损术与中医药治疗帕金森病的对比研究

目的 :通过微电极引导的苍白球腹后部毁损术和中医药疗法治疗帕金森病的对比研究 ,探讨手术疗法和中医药疗法各自的疗效特点和治疗适应证。方法 :应用微电极引导的苍白球腹后部毁损术治疗帕金森病 34例 ,手术包括同期双侧、分期双侧和单侧手术。针刺配合中药治疗帕金森病 5 6例。Webster帕金森病功能障碍记分法评分 ,将治疗前后和两组之间治疗结果进行对比。结果 :手术治疗组 34例帕金森病病人中 ,有 33例患者在手术过程中震颤、僵直、运动迟缓等主要症状均有不同程度的缓解 ,手术后这些症状也持续好转 ,但其症状缓解程度在不同的病人中有所不同。Webster帕金森病功能障碍记分法评分 ,术后 1周进步率为 5 0 %～ 99%者 2 6例 ,1%～ 49%者 7例 ,<1%者 1例 ,总有效率 97%。中医药治疗组 80 %以上的患者治疗一个月后主观症状改善 ,主要体征好转 ,基本生活能力得到提高。治疗 3个月后Webster帕金森病功能障碍记分法评分 ,进步率为 5 0 %～ 99%者 6例 ,1%～ 49%者 39例 ,<1%者 11例 ,总有效率为 80 4%。两组患者治疗前、后评分结果进行t检验 ,P <0 0 1,两组之间治疗结果的总有效率进行 χ2 检验校正 ,P <0 0 5。结论 :微电极引导的苍白球腹后部毁损术和中医药治疗帕金森病均可取得较为满意的疗效。手术组对     

Effects of pallidotomy and levodopa on walking and reaching movements in Parkinson's disease.

We examined the effects of levodopa and unilateral pallidotomy on quantitative measures of walking and reaching in Parkinson's disease (PD). We also compared quantitative measures of movement with standard clinical rating scales. We used kinematic measures and the Unified Parkinson's Disease Rating Scale (UPDRS) motor subscale (subscale III) to evaluate the movement of 10 people with PD. Subjects were tested after withholding PD medications for at least 8 hours and again 30 to 45 minutes after taking the first morning dose of levodopa. They were studied in this manner before unilateral pallidotomy and then 3.5 to 10 months after surgery. The UPDRS motor subscale was performed in each state. Kinematic data were collected as subjects reached to a target and walked. The UPDRS motor subscale ratings were similar to those reported in the literature: pallidotomy improved the overall motor score and the contralateral bradykinesia + rigidity score, but not the gait + posture score. In contrast, kinematic measures demonstrated that levodopa and pallidotomy had different effects on walking and reaching speed. Both treatments improved walking speed, and the effect was additive. Levodopa improved reaching speed before pallidotomy but did not improve it as much after pallidotomy. Additionally, pallidotomy had inconsistent effects on reaching; some subjects were faster and others were slower. The subjects who initially reached more slowly improved after pallidotomy; the subjects who initially reached more normally (faster) worsened after pallidotomy. On the basis of our results, we speculate that basal ganglia output pathways that control walking and reaching may be distinct, such that bilateral projections to the pedunculopontine area influence walking, whereas ipsilateral thalamocortical projections influence reaching.     

Bilateral effects of unilateral subthalamic nucleus deep brain stimulation in advanced Parkinson's disease

To investigate the bilateral effects of unilateral subthalamic nucleus deep brain stimulation (STN-DBS), we prospectively studied 9 consecutive advanced Parkinson's disease (PD) patients (2 men and 7 women) who underwent unilateral STN-DBS. Patients were evaluated preoperatively and at 3 and 6 months postoperatively with and without dopaminergic medications ('on' and 'off' medication, respectively). Postoperatively, patients were assessed with and without stimulation. We found that, when compared with baseline, the 'off' medication scores of the Unified Parkinson's Disease Rating Scale motor part (UPDRS III) and activities of daily living (UPDRS II) were improved by 37% (p = 0.028) and 50% (p = 0.046) at 6 months after surgery, respectively. Stimulation while 'off' medication improved the total UPDRS score by 42% (p = 0.028) at 6 months. At 6 months after surgery, the subscore of UPDRS III of body parts contralateral to the DBS implantation had improved by 48% (p = 0.028), and the ipsilateral subscore of UPDRS III and the axial subscore of UPDRS III had improved by 20% (p = 0.027) and 39% (p = 0.028), respectively. Daily dosage of levodopa was reduced by 15% at 6 months. No patient exhibited permanent side effects. These findings indicate that unilateral STN-DBS may be a reasonable surgical procedure for selected PD patients who have markedly asymmetric parkinsonism.     

Pallidal vs subthalamic nucleus deep brain stimulation in Parkinson disease

BACKGROUND: Deep brain stimulation (DBS) of the globus pallidus interna (GPi) and subthalamic nucleus (STN) has been reported to relieve motor symptoms and levodopa-induced dyskinesia in patients with advanced Parkinson disease (PD). Although it has been suggested that stimulation of the STN may be superior to stimulation of the GPi, comparative trials are limited. OBJECTIVE: To extend our randomized, blinded pilot comparison of the safety and efficacy of STN and GPi stimulation in patients with advanced PD. DESIGN: This study represents the combined results from our previously published, randomized, blinded, parallel-group pilot study and additional patients enrolled in our single-center extension study. SETTING: Oregon Health and Science University in Portland.Patients Twenty-three patients with idiopathic PD, levodopa-induced dyskinesia, and response fluctuations were randomized to implantation of bilateral GPi or STN stimulators. Patients and evaluating clinicians were blinded to stimulation site. All patients were tested preoperatively while taking and not taking medications and after 3, 6, and 12 months of DBS. MAIN OUTCOME MEASURES: Postoperatively, response of symptoms to DBS, medication, and combined medication and DBS was evaluated. Twenty patients (10 in the GPi group and 10 in the STN group) completed 12-month follow-up. RESULTS: Off-medication Unified Parkinson's Disease Rating Scale motor scores were improved after 12 months of both GPi and STN stimulation (39% vs 48%). Bradykinesia tended to improve more with STN than GPi stimulation. No improvement in on-medication function was observed in either group. Levodopa dose was reduced by 38% in STN stimulation patients compared with 3% in GPi stimulation patients (P = .08). Dyskinesia was reduced by stimulation at both GPi and STN (89% vs 62%). Cognitive and behavioral complications were observed only in combination with STN stimulation. CONCLUSION: Stimulation of either the GPi or STN improves many features of advanced PD. It is premature to exclude GPi as an appropriate target for DBS in patients with advanced disease.     

Effects of subthalamic nucleus stimulation on striatal dopaminergic transmission in patients with Parkinson’s disease within one-year follow-up

The mechanisms by which deep brain stimulation (DBS) of the subthalamic nucleus (STN) leads to clinical benefit in Parkinson's disease (PD), especially with regard to dopaminergic transmission, remain unclear. Therefore, the objective of our study was to evaluate alterations of synaptic dopaminergic signaling following bilateral STN-DBS in advanced PD within a one-year follow-up. We used [(123)I]FP-CIT single-photon emission computed tomography (SPECT) to measure dopamine transporter (DAT) availability and [(123)I]IBZM SPECT to assess dopamine D(2) receptor (D2R) availability (stimulator ON condition).Patients (n=18) showed a tendency towards a better suppression of symptoms after STN-DBS (Unified Parkinson's Disease Rating Scale motor score with medication decreased from 24.1+/-16.1 to 15.4+/-7.45; p=0. 002) while medication was strongly reduced (61% reduction of levodopa equivalent units; p<0. 0001). No changes of striatal [(123)I]FP-CIT binding and an increase of [(123)I]IBZM binding up to 16% (p<0. 05) between pre-surgery and follow-up investigations were noticed. These data show that clinical improvement and reduction of dopaminergic drugs in patients with advanced PD undergoing bilateral STN-DBS are paralleled by stable DAT and recovery of striatal D2R availability 12 months after surgery.     

微电极记录技术在帕金森病手术治疗价值

目的　总结微电极导向立体定向手术治疗帕金森病的临床经验及治疗效果。方法　自 1 999年 4月至 2 0 0 1年 2月采用微电极导向立体定向手术治疗帕金森病 350例 ,其中苍白球腹后部毁损术 (PVP) 2 78例 ,丘脑腹中间核 (Vim)毁损术 35例 ,同期同侧PVP和Vim毁损术 1 5例 ,行同期双侧PVP 1 1例 ,分期双侧PVP 8例 ,分期一侧PVP或另一侧Vim毁损术 3例。对手术前后的“关”状态和“开”状态进行生活能力评分、UPDRS评分 ,并进行门诊随访。结果　术后日常生活能力评分“关”状态提高 2 9.8% ,“开”状态提高 2 5 .9%。UPDRS :在“关”状态下 ,总的改善率为 57.3 % ,其中精神行为情绪改善率为 50 .8% ,日常活动改善率 59.1 % ,运动功能改善率 58.2 %。结论　PVP对震颤效果不如Vim毁损术 ,对震颤明显 ,无明显僵直的患者可选择Vim毁损术 ,对震颤僵直型患者可分期双侧PVP毁损术。     

Internal globus pallidotomy in dystonia secondary to Huntington's disease.

INTRODUCTION AND METHOD: The prototypic motor feature of Huntington's disease (HD) is chorea, but parkinsonism and involuntary movements such as dystonia and myoclonus can also be present. Pallidotomy has been shown to be an effective treatment for medically refractory Parkinson's disease (PD). We performed bilateral microelectrode guided-stereotactic pallidotomies targeted at globus pallidum internus (GPi) to treat a 13-year-old patient diagnosed with Westphal variant of HD with intractable generalized dystonia and parkinsonism. RESULTS: Intraoperative microelectrode recordings of GPi cells showed a relatively low firing rate, 29 +/- 14 Hz, with most neurons showing pauses. Acutely, after surgery, limb dystonia mildly improved but trunk dystonia persisted. Postoperative follow up 3 months later showed minimal clinical improvement in dystonic features with marked worsening of spasticity. CONCLUSION: In our case, bilateral pallidotomy produced modest palliative functional improvement in dystonic features. Cellular firing patterns were markedly different than in PD and were similar to those found in dystonia.     

Outcomes following staged bilateral pallidotomy in advanced Parkinson's disease

The authors assessed clinical outcome for up to one year after staged bilateral pallidotomy in 14 patients with advanced PD. One year after surgery, dyskinesias were virtually abolished and there were significant reductions in "off" time (67%) and activities of daily living "off" scores (24%), as well as nonsignificant reduction in "off" motor score (39%); "on" scores were unchanged. One patient developed a visual field deficit; two had transient confusion. Staged bilateral pallidotomy improves motor function in selected patients with advanced PD.     

GPi pallidotomy for Parkinson's disease with drug-induced psychosis

Levodopa-induced psychosis may seriously threaten the ability of patients with Parkinson's disease (PD) to continue leading an independent life. A retrospective assessment of the therapeutic effects of the globus pallidus internus (GPi) pallidotomy on the activities of daily living (ADL) of seven PD patients presenting with mild or moderate degrees of psychosis was carried out. Their scores according to the Unified Parkinson's Disease Rating Scale (UPDRS) Part I-2 (maximum=4) were 2 or 3 (mean +/- SD=2.4 +/- 0.5). Bilateral procedure was needed in 5 out of 7 patients to obtain sufficient improvement of motor symptoms. At 3 months after surgery, UPDRS part III motor scores in the 'off' state were significantly decreased and motor fluctuations were abolished. Nevertheless, their score of Schwab and England (S-E) ADL scale scores responded poorly to the surgery, while the scores in other 12 patients without psychosis was significantly improved after pallidotomy. The data indicate that GPi pallidotomy ameliorates the motor symptoms in patients with drug-induced psychosis (DIP), but has no significant impact on their consequent daily activities. A regression model for all 19 patients who underwent pallidotomy revealed that postoperative S-E scale was affected by the preoperative UPDRS Part I-2 rather than by Part III motor score. The present study suggested that DIP, even if its degree is not severe, may be a limiting factor of the therapeutic potential of pallidotomy in patients with PD.     

Deep-brain stimulation in the subthalamic nuclei improves balance performance in patients with Parkinson's disease, when tested without anti-parkinsonian medication

OBJECTIVE: To evaluate the effect of bilateral deep-brain stimulation (DBS) in the subthalamic nucleus (STN) on balance performance in patients with severe Parkinson's disease (PD), when tested without anti-parkinsonian medication. MATERIAL AND METHODS: Thirty-one patients (median age 65 years, range 50-77) were included. Assessments were made after 10-12 h withdrawal of medication, before and 6 and 12 months after surgery. Postoperative evaluations were performed with DBS on and off. Balance performance was evaluated with the Berg Balance Scale (BBS). Motor symptoms and postural stability (item 30) were assessed with the Unified Parkinson's Disease Rating Scale (UPDRS III). RESULTS: DBS in STN improved balance performance as well as postural stability and motor symptoms significantly (P 相似文献   

颅内核团射频毁损治疗帕金森病若干问题探讨

目的：探讨和研究颅内射频毁损治疗帕金森病的方法,效果,术后并发症与反应等有关问题。方法：回顾性分析我院近一年来收治的104例帕金森病,应用CT解剖定位和微电极电生理记录细胞定位方法,行丘脑腹外侧核或／和苍白球腹后内侧部射频毁损治疗,术前,术后3月,半年和一年采用Webster记分,改善在1％－19％为好转,20％－59％为有效,60％以上为显效。结果：104例患中,术后3月内改善98例,总有效率达94．2％,6例症状改善不明显。67例随访6－12月,症状改善54例,有效率80．6％,16例出现一过性嗜睡,呃逆;2例出现一过性偏瘫,5例出现颅内少量出血,其中2例术后立即发生毁损点少量出血,3例术后6d内出现针道周围出血,1例术后3月因肺部感染死亡。结论：微电极电生理定位颅内核团毁损是治疗帕金森病安全的和有效的方法,但应注意掌握适应症,精确定位,提高治愈率。     

Psychomotor and executive functioning after unilateral posteroventral pallidotomy in patients with Parkinson's disease

The goal of the study was to explore the immediate effects of unilateral posteroventral stereotactic pallidotomy (PVP) on psychomotor and executive functioning in patients with Parkinson's disease (PD). The original drawing task, conducted on a digitizing tablet, and neuropsychological tests were administered to 25 patients with PD, 2 or 3 days before and after the surgery. To assess executive functions, the following tests were used: Trail Making Test (TMT), Stroop Colour Interference Test and Wisconsin Card Sorting Test (WCST). To evaluate global mental functioning, Mini Mental State Examination (MMSE) was applied. Benton Visual Retention Test (BVRT) was introduced as a control non-executive task. The patients undergoing a surgery were compared with age and education matched healthy and PD controls. PVP resulted in an increased movability of the upper contralateral limbs reflected in larger average pressure put during the drawing task after the surgery. Assessment of the emotional state showed a significant postoperative improvement. An isolated significant decline of WCST performance, not related to the side of the lesion, was observed immediately after the surgery. The performance of the other executive and non-executive tasks remained unchanged. The results showed that unilateral PVP may lead to immediate selective executive impairment and is needed to be explored in further studies.