Clinical study of effects of intramuscular diazepam in chronic postherpetic neuralgia
| ISRCTN | ISRCTN12682696 |
|---|---|
| DOI | https://doi.org/10.1186/ISRCTN12682696 |
| Protocol serial number | XINHUA2018-02 |
| Sponsor | Xinhua Hospital (affiliated with Shanghai Jiaotong University School of Medicine) |
| Funder | Xinhua Hospital (affiliated with Shanghai Jiaotong University School of Medicine) |
- Submission date
- 11/01/2018
- Registration date
- 24/01/2018
- Last edited
- 30/05/2024
- Recruitment status
- No longer recruiting
- Overall study status
- Completed
- Condition category
- Nervous System Diseases
Plain English summary of protocol
Background and study aims
Postherpetic neuralgia is lasting nerve pain in an area previously affected by shingles. It seriously affects the patient's sleep, mood and quality of life. After treatment there are still some patients who suffer from neuropathic pain and it is still a difficult clinical problem. Diazepam is a long-acting drug used in insomnia and sedation. Animal studies have shown that an injection of diazepam can treat neuropathic pain. The aim of this study is to assess the effects of diazepam on postherpetic neuralgia, anxiety, depression and quality of life, and its safety and side effects.
Who can participate?
Patients aged 18 to 80 with postherpetic neuralgia
What does the study involve?
Participants are randomly allocated to two groups. Those in group 1 are given diazepam injections for 3 days. Those in group 2 are given saline (salt water) injections instead. The pain experienced after treatment is assessed for each patient every day for the next 3 months.
What are the possible benefits and risks of participating?
The participants could have better pain relief. The main possible risks are the side effects of diazepam.
Where is the study run from?
Xinhua Hospital (affiliated with Shanghai Jiaotong University School of Medicine) (China)
When is the study starting and how long is it expected to run for?
February 2018 to July 2019
Who is funding the study?
Xinhua Hospital (affiliated with Shanghai Jiaotong University School of Medicine) (China)
Who is the main contact?
Prof. Ke Ma
Contact information
Scientific
No 1665
Kongjiang Road
Yangpu District
Shanghai
200092
China
Study information
| Primary study design | Interventional |
|---|---|
| Study design | Single-center double-blinded randomized controlled clinical study |
| Secondary study design | Randomised controlled trial |
| Study type | Participant information sheet |
| Scientific title | Clinical trial of effects of intramuscular diazepam in chronic postherpetic neuralgia |
| Study objectives | 1. Intramuscular diazepam is effective and safe when administered for chronic postherpetic neuralgia patients. 2. Treatment of Intramuscular diazepam can improve the quality of life of chronic postherpetic neuralgia patients. |
| Ethics approval(s) | Xinhua Hospital Ethics Committee Affiliated to Shanghai Jiaotong University School of Medicine, 26/12/2017, ref: XHEC-C-2017-105 |
| Health condition(s) or problem(s) studied | Neuralgia |
| Intervention | 78 participants are randomly allocated to two groups. Those in group 1 (n=39) are given diazepam 10mg intramuscularly for 3 days. Those in group 2 (n=39) are given saline instead. The basic treatment is oral administration of Gabapentin 0.3g t.i.d. The pain experienced after treatment is assessed for each patient every day for the next 3 months. |
| Intervention type | Drug |
| Phase | Not Applicable |
| Drug / device / biological / vaccine name(s) | Diazepam |
| Primary outcome measure(s) |
1. Pain, measured using the visual analogue score (VAS) during the treatment and at 7 days, 14 days, 21 days, 28 days, 2 months and 3 months post-treatment. |
| Key secondary outcome measure(s) |
1. Intensity of anxiety, measured using the PHQ-9 evaluation scale during the treatment and at 7 days, 14 days, 21 days, 28 days, 2 months and 3 months after treatment |
| Completion date | 31/07/2019 |
Eligibility
| Participant type(s) | Patient |
|---|---|
| Age group | Adult |
| Lower age limit | 18 Years |
| Upper age limit | 80 Years |
| Sex | All |
| Target sample size at registration | 78 |
| Total final enrolment | 78 |
| Key inclusion criteria | 1. Subjects voluntarily signed the informed consent 2. Patients suffering from chronic postherpetic neuralgia aged from 18 to 80 regardless of gender 3. Moderate to severe pain, VAS> 4 points or more, or burst pain> 3 times/day 4. Patients can follow the drug dose and follow-up plan 5. Patients can describe the symptoms, no serious infection, respiratory insufficiency and has the ability to cooperate 6. Non-allergic persons 7. No drug abuse or drug addiction 8. Non-lactating, non-pregnant women, subjects who did not have a pregnancy plan within 1 month after the test 9. Patients did not participate in a drug test within 3 months before this test (including the test drug) |
| Key exclusion criteria | 1. Researchers think that there is any reason participant should be excluded 2. In poor situation, severe systemic infection or respiratory dysfunction and uncooperative 3. Suffering from severe respiratory system, cardiovascular system diseases, liver and kidney dysfunction, cancer 4. Patients who are allergic to diazepam or other benzodiazepines 5. Patient who has or a history of drug abuse 6. Breastfeeding, gestational women or subjects who do not have a pregnancy plan within 1 month after the test 7. Patients who participated in a drug trial within 3 months before this trial 8. Patients does not meet the inclusion criteria |
| Date of first enrolment | 01/02/2018 |
| Date of final enrolment | 31/01/2019 |
Locations
Countries of recruitment
- China
Study participating centres
200092
China
Shanghai
200092
China
Results and Publications
| Individual participant data (IPD) Intention to share | No |
|---|---|
| IPD sharing plan summary | Data sharing statement to be made available at a later date |
| IPD sharing plan | The data sharing plans for the current study are unknown and will be made available at a later date. |
Study outputs
| Output type | Details | Date created | Date added | Peer reviewed? | Patient-facing? |
|---|---|---|---|---|---|
| Results article | 29/05/2024 | 30/05/2024 | Yes | No | |
| Participant information sheet | Participant information sheet | 11/11/2025 | 11/11/2025 | No | Yes |
Editorial Notes
30/05/2024: Publication reference and total final enrolment added.
