The Old and the New: Discovery Proteomics Identifies Putative Novel Seminal Fluid Proteins in Drosophila.

Seminal fluid proteins (SFPs), the nonsperm component of male ejaculates produced by male accessory glands, are viewed as central mediators of reproductive fitness. SFPs effect both male and female post-mating functions and show molecular signatures of rapid adaptive evolution. Although , is the dominant insect model for understanding SFP evolution, understanding of SFP evolutionary causes and consequences require additional comparative analyses of close and distantly related taxa.

Sperm morphology and the evolution of intracellular sperm-egg interactions.

Sperm morphology is incredibly diverse, even among closely related species, yet the coevolution between males and females of fertilization recognition systems is necessary for successful karyogamy (male and female pronuclear fusion). In most species, the entire sperm enters the egg during fertilization so sperm morphological diversity may impact the intracellular sperm-egg interactions necessary for karyogamy. We quantified morphological variation of sperm inside eggs prior to and following karyogamy in several species of to understand whether evolution of sperm morphology could influence intracellular sperm-egg interactions (ISEIs).

An observational study to assess the association between osteoporosis and periodontal disease.

Background: There is evidence to suggest osteoporosis may result in premature tooth loss. The pathology behind this relationship is poorly understood. A correlation with osteoporosis and greater susceptibility to periodontal disease has been suggested.

Tooth loss and osteoporosis: to assess the association between osteoporosis status and tooth number.

Background: Osteopenia and osteoporosis are conditions characterised by a reduction in bone mineral density. There is contradictory evidence whether osteoporotic patients have greater tooth loss than non-osteoporotic patients.

Objective: To investigate the association between tooth number and osteoporotic status, taking into account the effect of other confounding variables such as age, smoking status, alcohol consumption and the use of hormone replacement therapy.

Do patients with osteoporosis have an increased prevalence of periodontal disease? A cross-sectional study.

Unlabelled: The study examined if women with osteoporosis were at increased risk of periodontal disease. Three hundred eighty females aged 45-65 years with recent dual-energy X-ray absorptiometry (DXA) scans of the spine and proximal femur agreed to a dental examination. No association was established between the presence of severe periodontal disease and osteoporosis.