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Ultraviolet radiation, melanocytic naevi and their dose-response relationship (1997)

NGUYEN, T.D. ; SISKIND, V. ; GREEN, L. ; [et al.]

Oxford, UK : Blackwell Publishing Ltd

British journal of dermatology 137 (1997), S. 0

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ISSN: 1365-2133

Source: Blackwell Publishing Journal Backfiles 1879-2005

Topics: Medicine

Notes: Melanocytic naevi on the face and neck of 110 Brisbane secondary school students aged 16–17 years were mapped according to specified regions to investigate the dose-response relationship between ultraviolet (UV) radiation and melanocytic naevi. Highest naevus density occurred in regions receiving a mean UV dose of 0.2–0.4 relative to the vertex while densities were low in minimally and maximally exposed regions. This pattern of naevus distribution was unaffected by sex or phenotypic features such as skin colour or degree of freckling. These findings suggest that there is a narrow dose range over which UV radiation can effectively promote the proliferation of melanocytes. A comparison of the regional distribution of naevi on the face and neck with that of solar keratoses appearing over 1 year on the heads of residents of a neighbouring town has shown them to differ significantly. This study may shed some light on the unknown, yet expectedly complex, relation of UV radiation to melanocytic naevi.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1046/j.1365-2133.1997.17731849.x

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The time factor in mortality: weather associations in a subtropical environment (1997)

Auliciems, A. ; Frost, D. ; Siskind, V.

Springer

International journal of biometeorology 40 (1997), S. 183-191

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ISSN: 1432-1254

Source: Springer Online Journal Archives 1860-2000

Topics: Geography , Physics

Notes: Abstract Mortality rates for a decade in Brisbane are analysed for dependence upon atmospheric factors. Time filters are applied to both the dependent and independent variables, and several models are developed to enable prediction, especially for weekly intervals. Statistically, deaths are observed to increase with colder and less humid weather with winds from a westerly, direction. Overall, taking account of both synoptic and seasonal influences, 〉90% of cumulative deviations from mean death rates are explained. Some differences are also noted in the association of death with the weather between sexes, age groups and causes of death.