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Biomedical subjects

S Lanigan

Publications and source records attributed to S Lanigan.

8 recordsLinked to original sources

New dimensions in Hirsutism.

The following is a review of a satellite symposium held at the British Medical Laser Association Meeting, in November 2005. Prof. V.A. Randall gave a comprehensive overview of hormones and hair growth, followed by an in-depth discussion of hirsutism, the therapeutic options, treatment and trends, by Dr. S. Lanigan. Dr. I. Hamzavi concluded the symposium with a presentation of the latest work on eflornithine in combination with laser hair removal. Data were reproduced with the speakers' permission.

Androgens↗

Study of patient-reported morbidity following V-beam pulsed-dye laser treatment of port wine stains.

The V-beam pulsed-dye laser (PDL) (595 nm) has gained popularity in the treatment of port wine stains (PWS). It uses longer pulse durations than the standard flashlamp-pumped pulsed-dye laser (FPDL) (585 nm) and has an in-built cooling system to protect the epidermis. This should, theoretically, reduce the treatment-associated side effects, including discomfort. The aim of this questionnaire-based study was to confirm the clinical impression that V-beam PDL is well tolerated. The results were compared with a historical group of 62 PWS patients treated with FPDL. Fifty-one patients took part in the current study. Only 35.7% (vs. 81% in the historical comparison group) required topical anaesthetic prior to laser treatment. A shortening in the duration of bruising (8 vs. 10 days) and of symptoms such as burning and tightness (3 vs. 10 days) was recorded. Lifestyle change after treatment was recorded by fewer patients (39 vs. 57%). We conclude that V-beam PDL is better tolerated than FPDL when used at therapeutic levels in patients with PWS.

Adolescent↗

Final report on the safety assessment of Methyl Alcohol.

Methyl Alcohol is an aliphatic alcohol with use in a few cosmetic formulations as a solvent and denaturant. Concentrations up to 5% are typically used to denature ethyl alcohol in cosmetic products. Methyl Alcohol is readily absorbed through the skin and from the gastrointestinal and respiratory tracts, is distributed throughout all organs and tissues (in direct relation to the body's water distribution), and is eliminated primarily via the lungs. Undiluted Methyl Alcohol is an ocular and skin irritant. Inhalation studies showed a no-effect level for maternal damage of 10,000 ppm and for teratogenic effects of 5,000 ppm. Overall, Methyl Alcohol is not considered mutagenic. Carcinogenicity data were unavailable. The toxicity of Methyl Alcohol in humans results from the metabolism of the alcohol to formate and formic acid through a formaldehyde intermediate. Formate accumulation causes metabolic acidosis and inhibits cellular respiration. Methyl Alcohol toxicity is time and concentration dependent, and its toxic effect is competitively inhibited with ethyl alcohol. Because of the moderating effect of ethyl alcohol, it was concluded that Methyl Alcohol is safe as used to denature ethyl alcohol used in cosmetic products. No conclusion was reached regarding any other use of Methyl Alcohol.

Animals↗

The stigma of port-wine stains.

Patients with port-wine stains are now able to receive treatment to improve significantly their birthmark. Questionnaire studies of these patients have revealed considerable psychological distress. This article reviews the nature of that distress and the stigmatization suffered by patients with disfiguring birthmarks.

Attitude to Health↗

The effects of topically applied hexyl nicotinate lotion on the cutaneous blood flow in patients with Raynaud's phenomenon.

The effect of the epicutaneous application of 0.1% and 1.0% hexyl nicotinate lotion on upper limb skin blood flow was investigated in 25 patients with Raynaud's phenomenon (RP) and five healthy volunteers. Assessments were made using laser Doppler velocimetry. The 0.1% lotion induced an increase in cutaneous blood flow in both controls and patients when applied at different sites on the upper limb. Increased cutaneous blood flow occurred more often when the lotion was applied to the forearm than to the fingers. A greater increase in blood flow and an increased percentage of positive responses was elicited with the 1.0% hexyl nicotinate lotion. Hexyl nicotinate lotion may be of value in the topical treatment of RP.

Administration, Cutaneous↗