A comparison of seasonal flexibility in pectoralis muscle fiber type and enzyme activity in migratory and resident sparrow species.

The pectoralis muscle in birds is important for flight and thermogenesis. In migratory songbirds this muscle exhibits seasonal flexibility in size, but whether this flexibility reflects changes in muscle fiber type has not been well documented. We investigated how seasonal changes in photoperiod affected pectoralis muscle fiber type and metabolic enzymes, comparing among three closely-related sparrow species: two seasonal migrants and one year-round, temperate climate resident.

Comorbid conditions and survival among Black women with ovarian cancer.

Background: Black women with epithelial ovarian cancer (EOC) have worse survival and a higher burden of comorbid conditions compared with other racial groups. This study examines the association of comorbid conditions and medication use for these conditions with survival among Black women with EOC.

Methods: In a prospective study of 592 Black women with EOC, the Charlson comorbidity index (CCI) based on self-reported data, three cardiometabolic comorbidities (type 2 diabetes, hypertension, and hyperlipidemia), and medication use for each cardiometabolic comorbidity were evaluated.

From leprosy to ground zero: Imagining futures in a world of elimination.

Achieving a target of zero-zero disease, zero disability, and zero discrimination-has become the dominant focus of campaigns to control or eliminate diseases, from HIV/AIDS to malaria to leprosy. Given the historical failure of most eradication programs over the last century, such teleological imaginings of disease-free futures might seem overly utopian. But even if it were possible to eradicate such diseases in their entirety, would this be universally welcomed, even by those most affected by them? In this article, I compare the narratives of national and international bodies concerned with eliminating leprosy, in particular, with the more ambivalent narratives of those affected by the disease in India, the country where the disease is most prevalent.