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Hypersensitivity to Lanolin: An Old-New Problem.
Life (Basel)
November 2024
Department of Allergology, Clinical Immunology and Internal Medicine, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, Ul. Ujejskiego 75, 85-168 Bydgoszcz, Poland.
Lanolin is a fatty substance derived from sheep's fleece. The ancient Greeks used the moisturizing and skin-protective properties of this substance. The technique of industrial production of lanolin was developed in Germany in the 19th century.
View Article and Find Full Text PDFReconciling Archean organic-rich mudrocks with low primary productivity before the Great Oxygenation Event.
Proc Natl Acad Sci U S A
January 2025
Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125.
The organic carbon content of ancient rocks provides a fundamental record of the biosphere on early Earth. For over 50 y, the high organic content of Archean (>2.5 Ga) mudrocks has puzzled geologists and evolutionary biologists, because high biological primary productivity was unexpected for the nascent biosphere before the rise of O.
View Article and Find Full Text PDFAlternative sources of molybdenum for Methanococcus maripaludis and their implication for the evolution of molybdoenzymes.
Commun Biol
October 2024
Department of Microbiology and Cell Biology, Montana State University, Bozeman, MT, USA.
Molybdoenzymes are essential in global nitrogen, carbon, and sulfur cycling. To date, the only known bioavailable source of molybdenum (Mo) is molybdate. However, in the sulfidic and anoxic (euxinic) habitats that predominate in modern subsurface environments and that were pervasive prior to Earth's widespread oxygenation, Mo occurs as soluble tetrathiomolybdate ion and molybdenite mineral that is not known to be bioavailable.
View Article and Find Full Text PDFExtensive Population Structure Highlights an Apparent Paradox of Stasis in the Impala (Aepyceros melampus).
Mol Ecol
November 2024
Department of Biology, University of Copenhagen, Copenhagen, Denmark.
Impalas are unusual among bovids because they have remained morphologically similar over millions of years-a phenomenon referred to as evolutionary stasis. Here, we sequenced 119 whole genomes from the two extant subspecies of impala, the common (Aepyceros melampus melampus) and black-faced (A. m.
View Article and Find Full Text PDFHigh prevalence of adult and nonadult scurvy in an early agricultural transition site from Mainland Southeast Asia was associated with decreased survivorship.
Am J Biol Anthropol
October 2024
Department of Anatomy, University of Otago, Dunedin, New Zealand.
Article Synopsis
- The article examines the relationship between scurvy and survival rates in a Neolithic population from Man Bac, Vietnam, highlighting that the presence of lesions doesn’t always correlate with higher mortality.
- Using statistical methods like survivorship analysis, the research reveals that scurvy was more prevalent in nonadult populations (80%) compared to adults (35%).
- Kaplan-Meier survival curves indicate that while infants and children showed no survival difference related to scurvy, a significant difference was noted in adults and adolescents 15 years and older, suggesting scurvy substantially impacted their survival.
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