Background: Ocular melanoma is a rare but often deadly malignancy that arises in the uvea, conjunctiva, or orbit. Uveal melanoma is the most common type, with conjunctival melanoma being the second most frequently observed. Melanoma accounts for 5-10% of metastatic or secondary orbital malignancies, but only a minute proportion of primary orbital neoplasia.
View Article and Find Full Text PDFBiological clocks have evolved as an adaptation to life on a rhythmic planet, synchronising physiological processes to the environmental light-dark cycle. Here we examine circadian clock function in Mexican blind cavefish Astyanax mexicanus and its surface counterpart. In the lab, adult surface fish show robust circadian rhythms in per1, which are retained in cave populations, but with substantial alterations.
View Article and Find Full Text PDFPurpose: There is little published data on pregnancy outcomes in women who had conceived spontaneously after age 45 years. The aim of this review is to provide accurate information on the risks and probable outcomes of spontaneously conceived pregnancies in women over the age of 45 years, which will enable clinicians to counsel such women appropriately, carry out adequate risk assessment, and ensure better care for pregnancies in this population.
Design: A literature search was performed using EmBase and PubMed for English language articles published between 1970 and 2011, with extractable data on mothers aged ≥45 at the time of delivery and with ≥95% spontaneous conception in the study population.