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🐁 Mouse · 2021 · China (Shanghai)

Microglia modulation with 1070-nm light attenuates Aβ burden and cognitive impairment in Alzheimer's disease mouse model

Tao · Light Sci Appl · 2021

The protocol this study used

Wavelength
1070 nm
Dose
4.5 J/cm²
Sessions
60
Per session
6 min

What the authors concluded

Our results show that 1070-nm light pulsed at 10 Hz triggers microglia rather than astrocyte responses in AD mice. The 1070-nm light-induced microglia responses with alteration in morphology and increased colocalization with Aβ are sufficient to reduce Aβ load in AD mice. Moreover, 1070-nm light pulsed at 10 Hz can reduce perivascular microglia and promote angiogenesis to further enhance Aβ clear

Devices that emit this wavelength

Matched on wavelength within 15nm, since LED bins vary by roughly that much and a tighter match would be false precision. Where we have an irradiance figure, the session length is the time needed to reach this study's dose of 4.5 J/cm² at that intensity.

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PlatinumLED BIOMAX 900
480 · 630 · 660 · 810 · 830 · 850 · 1060 nm
Measured
$1,299
≈ 50 sec / session
at 90.3 mW/cm²
PlatinumLED BIOMAX 300
480 · 630 · 660 · 810 · 830 · 850 · 1060 nm
Measured
$659
≈ 64 sec / session
at 70 mW/cm²
Rouge Pro G4
630 · 650 · 660 · 670 · 810 · 830 · 850 · 1060 nm
Measured
$1,121
≈ 76 sec / session
at 59.2 mW/cm²
PlatinumLED BIOMAX PRO ULTRA
480 · 630 · 660 · 810 · 830 · 850 · 1060 nm
Measured
$1,599
≈ 45 sec / session
at 101 mW/cm²
Block Blue Light ULTIMATE XXL
590 · 630 · 650 · 810 · 830 · 850 · 1060 nm
Measured
$4499.95
≈ 60 sec / session
at 75 mW/cm²
Block Blue Light PowerPanel MAX
590 · 630 · 650 · 810 · 830 · 850 · 1060 nm
Brand claim
$1099.95
≈ 55 sec / session
at 82 mW/cm²

Matching a wavelength is not the same as reproducing a trial. Session times assume the device's published irradiance is accurate at the distance it was measured, which on brand-claim figures is often optimistic. Where a device publishes both a peak and an average we use the average, and where it publishes a falloff curve we use the lowest figure, so these times run long rather than short. Clinical protocols also control for spot size, contact and skin type in ways a home device cannot.

Source

PubMed 34493703 →

Dosimetry extracted by Vladimir Heiskanen in Photobiomodulation (PBM) research - a comprehensive database. Citation resolved against PubMed.