Photomed Laser Surg. 2006 Feb;24(1):17-21.
Effect of linear polarized light irradiation near the stellate ganglion in skin blood flow of fingers in patients with progressive systemic sclerosis.
Lee CH, Chen GS, Yu HS.
Department of Dermatology, Kaohsiung Medical University, Kaohsiung, Taiwan.
OBJECTIVE: The purpose of this study is to evaluate the effect of linear polarized light irradiation near the stellate ganglion area on cutaneous blood flow in fingers of patients with progressive systemic sclerosis.
BACKGROUND DATA: Sympathetic overactivity is known to be present in patients with progressive systemic sclerosis. Recently introduced linear polarized light irradiation is designed to simulate noninvasive stellate ganglion block to decrease sympathetic output.
METHODS: Five patients with progressive systemic sclerosis and three normal healthy controls were studied. Linear polarized light (Super Lizer) was irradiated near the stellate ganglion on the right side of the neck at 358 J/cm(2) for 10 min. Then, laser Doppler flowmetry, laser Doppler imager, and capillary microscopy were used to measure the cutaneous blood flow of the right fourth finger for 30 min.
RESULTS: No significant alternations of the skin blood flow between normal controls and patients with progressive systemic sclerosis after linear polarized light irradiation were detected. The effect of linear polarized light on the microcirculation of patients with progressive systemic sclerosis was minimal and transient.
CONCLUSION: The effect of linear polarized light in treating patients with progressive systemic sclerosis may not result from the improvement of skin blood flow. Therefore, the use of linear polarized light in those patients to increase cutaneous blood flow should not be overemphasized.
Dermatol Surg. 2002 Jul;28(7):615-6.
Use of a 585 nm pulsed dye laser for the treatment of morphea.
Eisen D, Alster TS.
Washington Institute of Dermatologic Laser Surgery, Washington, DC 20037, USA.
INTRODUCTION: The clinical presentation of morphea varies from localized plaques to generalized eruptions. Its cause remains unknown and medical treatments have often proved unsatisfactory. Studies have previously shown that improvement of hypertrophic scars and fibrotic skin can be achieved with the use of a 585 nm pulsed dye laser (PDL).
METHODS: A case of plaque-type morphea was treated with 585 nm pulsed dye laser irradiation at an average fluence of 5.0 J/cm2 at bimonthly time intervals.
RESULTS: Marked clinical improvement as evidenced by improved pliability and skin coloration was seen after 4 successive PDL treatments. No side effects or complications were encountered. CONCLUSION: Pulsed dye laser therapy is a viable treatment option for morphea. The mechanism of its effect in this condition remains unknown.
Vestn Oftalmol. 1995 Apr-Jun;111(2):10-2.
[Effects of low-intensity laser irradiation on several parameters of microcirculation in the bulbar conjunctiva of patients with scleroderma]
[Article in Russian]
Podelinskaia LV, Polunin GS, Ermakova TM, Rabieva GM.
Computer-aided analytical system of TV images (CASTI) of the anterior segment of the eye revealed an appreciable increase of the level of aggregation gradient in arterioles and venules of the bulbar conjunctiva of 37 children suffering from various forms of scleroderma, as against 18 healthy children. Exposure to low-energy laser of a close infrared band (approximately 890 nm) had a favorable impact on blood aggregation in patients with scleroderma. CASTI of the anterior segment of the eye proved to be an objective and highly informative method for the diagnosis and monitoring of the efficacy of various treatment modalities.