The Effectiveness of Early Botulinum Toxin A Injection for Lower Limbs Spasticity in Subacute Stroke Adults

NCT ID: NCT02505802

Last Updated: 2015-07-22

Basic Information

• Recruitment Status: UNKNOWN
• Clinical Phase: PHASE4
• Total Enrollment: 30 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2014-01-31
• Study Completion Date: 2017-01-31

Brief Summary

Botulinum toxin A (BoNT-A) injections are widely used to treat spasticity after stroke. Although this treatment is effective on muscle tone improvement, its effect on gait and ability of daily living on early stage of stroke adults remains uncertain.The purpose of this study is to determine whether an early calf muscle injection of low dose BoNT-A in severely affected patients within 6 weeks after stroke could help to hold back disabling muscle spasticity and improve walking dysfunction.

Detailed Description

The high prevalence of stroke is a global problem causing well-known long-term disabilities. Post-stroke lower-extremity spasticity may cause severe functional limitations and pain. Spasticity is a phenomenon defined as disordered sensory-motor control, resulting from upper motor neuron (UMN) lesion, presenting as intermittent or sustained involuntary activation of muscles . Spasticity may interfere with motor function, and is a common reason for clinical interventions such as by physiotherapy, use of orthoses or other technical devices or drugs. Botulinum toxin A (BoNT-A) is a potent neurotoxin that is produced by the bacterium clostridium botulinum. BoNT-A, by blocking acetylcholine release at neuromuscular junctions, accounts for its therapeutic action to relieve dystonia, spasticity, and related disorders.

Unfortunately, intramuscular injections of botulinum often carried out when the patients have obvious spasticity . It is normally given until the clinical signs of an elevated muscle tone have become established; therefore it is usually given at least three months after stroke , . It will impede the rehabilitation of the patients. Accordingly, the present study asked whether an early calf muscle injection of low dose BoNT-A in severely affected patients within 6 weeks after stroke could help to hold back disabling muscle spasticity and improve walking dysfunction along 24 weeks fellow up trail.

This is a randomized, open-label, controlled trial along 24-weeks trails. Referred sample of adult subacute stroke patients (within 6 weeks since stroke, n=30) with mild spasticity of calf muscle will be included. Patients were randomly allocated to BoNT-A treatment group (15 patients) and control group (15 patients). In BoNT-A treatment group patients received 200 units BoNT-A injection in the triceps surae (150iu) and tibial muscle posterior (50iu). No special treatment was performed in the control group. Both groups received comprehensive rehabilitation for 8 weeks. Lower limbs Fugl-Meyer (FM) score, calf muscle modified Ashworth scale assess (MAS), gastrocnemius surface electromyography (sEMG) evaluation and modified Barthel index (MBI) were assessed before and 8, 12, 24 weeks after treatment. Gait analysis (step length，cadence，speed), 6-min walking distance were assessed 8, 12, 24 weeks after injection.

Conditions

Stroke; Muscle Spasticity

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: SINGLE

Study Groups

BoNT-A treatment group

In BoNT-A treatment group patients received 200 units BoNT-A injection in the triceps surae (150iu) and tibial muscle posterior (50iu). Both groups received comprehensive rehabilitation for 8 weeks.

Group Type: EXPERIMENTAL

BoNT-A injection

Intervention Type: DRUG

In BoNT-A treatment group patients received 200 units BoNT-A injection in the triceps surae (150iu) and tibial muscle posterior (50iu).

Control group

No special treatment was performed in the control group. Both groups received comprehensive rehabilitation for 8 weeks.

Group Type: NO_INTERVENTION

No interventions assigned to this group

Interventions

BoNT-A injection

In BoNT-A treatment group patients received 200 units BoNT-A injection in the triceps surae (150iu) and tibial muscle posterior (50iu).

Intervention Type: DRUG

Other Intervention Names

Botulinum toxin A

Eligibility Criteria

Inclusion Criteria

1. Were over the age of 18 and less than 80 years and had a stroke within 6 weeks.

2. Had slight spasticity of the triceps surae as defined by a score of 1-1+ on the Modified Ashworth Scale (MAS) or ankle clonus (+).

3. Had sufficient cognitive and communication ability as defined by MMSE (mini-mental state examination)>25.

4. Couldn't dorsiflex ankle and their LEMI (Lower Extremity Motor Index) < 10.

5. Were not receiving concurrent aminoglycoside antibiotics and oral anti-spasticity medication

Exclusion Criteria

1. Known allergy or sensitivity to study medication or its components.

2. Infection or dermatological condition at the injection sites.

3. Any medical condition that may put the subject at increased risk with exposure , including diagnosed myasthenia gravis, Eaton-Lambert syndrome, amyotrophic lateral sclerosis, or any other disorder that might have interfered with neuromuscular function.

4. QTc criteria: QTc ≥ 450 millisecond (msec) or≥480msec for subjects with Bundle Branch Block-values based on either single electrocardiogram (ECG) values or triplicate ECG averaged QTc values obtained over a brief recording period

5. Liver function tests: aspartate aminotransferase (AST) and alanine aminotransferase (ALT) ≥2xULN; alkaline phosphatase and bilirubin >1.5xULN (isolated bilirubin >1.5ULN is acceptable if bilirubin is fractionated and direct bilirubin <35%).

6. Concurrent use of aminoglycoside antibiotics or other agents that might interfere with neuromuscular function.

7. Patients with severe cognitive impairment or neurological diseases affecting the implementation or evaluation of the test, and drug-dependent patients.

8. Presence of clinically unstable severe cardiovascular, renal or respiratory disease

9. Researchers believe there are other factors unfit to participate in this study of patients.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 80 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Sir Run Run Shaw Hospital

OTHER

Sponsor Role: lead

Responsible Party

TAO WU

MD

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

TAO WU, MD

Role: STUDY_DIRECTOR

Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University

Locations

Sir Run Run Shaw Hospital, Medical College of Zhejiang University

Hangzhou, Zhejiang, China

Site Status: RECRUITING

Countries

China

Central Contacts

TAO WU, MD

Role: CONTACT

wutao1880@163.com

86 571 86006054

JIANHUA LI, MD

Role: CONTACT

zjdxsyfkfk@126.com

86 571 86006054

Facility Contacts

TAO WU, MD

Role: primary

wutao1880@163.com

JIANHUA LI, MD

Role: backup

zjdxsyfkfk@126.com

References

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Reference Type: RESULT

PMID: 18355307 (View on PubMed)

Sommerfeld DK, Eek EU, Svensson AK, Holmqvist LW, von Arbin MH. Spasticity after stroke: its occurrence and association with motor impairments and activity limitations. Stroke. 2004 Jan;35(1):134-9. doi: 10.1161/01.STR.0000105386.05173.5E. Epub 2003 Dec 18.

Reference Type: RESULT

PMID: 14684785 (View on PubMed)

McIntyre A, Lee T, Janzen S, Mays R, Mehta S, Teasell R. Systematic review of the effectiveness of pharmacological interventions in the treatment of spasticity of the hemiparetic lower extremity more than six months post stroke. Top Stroke Rehabil. 2012 Nov-Dec;19(6):479-90. doi: 10.1310/tsr1906-479.

Reference Type: RESULT

PMID: 23192713 (View on PubMed)

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Reference Type: RESULT

PMID: 20358216 (View on PubMed)

Cosgrove AP, Graham HK. Botulinum toxin A prevents the development of contractures in the hereditary spastic mouse. Dev Med Child Neurol. 1994 May;36(5):379-85. doi: 10.1111/j.1469-8749.1994.tb11863.x.

Reference Type: RESULT

PMID: 8168656 (View on PubMed)

Santamato A, Micello MF, Panza F, Fortunato F, Pilotto A, Giustini A, Testa A, Fiore P, Ranieri M, Spidalieri R. Safety and efficacy of incobotulinum toxin type A (NT 201-Xeomin) for the treatment of post-stroke lower limb spasticity: a prospective open-label study. Eur J Phys Rehabil Med. 2013 Aug;49(4):483-9. Epub 2013 Mar 13.

Reference Type: RESULT

PMID: 23480980 (View on PubMed)

Other Identifiers

2013KYB163

Identifier Type: -

Identifier Source: org_study_id