Salivary alpha-amylase activity correlates with pain relief scale after low level laser irradiation in patients with neuropathic pain?: A pilot study

Salivary alpha-amylase activity correlates with pain relief scale after low level laser irradiation in patients with neuropathic pain?: A pilot study - Salivary alpha-amylase activity correlates with pain relief scale after low level laser irradiation in patients with neuropathic pain?: A pilot study

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000032449

Enrollment

Registered

2018-05-01

Start date

2018-05-02

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

neuropathic pain

Interventions

The values of alpha-amylase are measured before and after low level laser irradiation in patients with neuropathic pain.

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Outpatients with neuropathic pain undergoing low level laser therapy with linearly polarized near-infrared equipment for pain relief.

Exclusion criteria

Exclusion criteria: 1. Patients who is not able to keep still and calm during the study 2. Patients with psychological diseases 3. Pregnant patients

Design outcomes

Primary

Measure	Time frame
The value of salivary alpha-amylase	—

Secondary

Measure	Time frame
Pain relief scale	—

Countries

Japan

Contacts

Public ContactRyoji Iida

Nihon University School of Medicine Department of Anesthesiology

ryoiida03@gmail.com81-3-3293-1711

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026