Table of Contents

January 2016; 6 (1)

PERSPECTIVES

  • Centenarian phenotypes are associated with functional variants in certain genes (e.g., the cholesterol ester transfer protein gene, or CETP). Drugs that mimic the action of these genes are under development.

  • Postprimary tuberculosis (TB) of the lungs is the prevailing TB manifestation in adults. It may spread from the lungs via the lymphatics or bloodstream to other body sites, causing various extrapulmonary TB manifestations.

  • Maternal immunological incompatibility with fetal blood groups can have serious consequences for the fetus. Rapid progress is being made to develop next-generation sequencing strategies for evaluating fetal DNA in maternal blood.

  • Ten major genotypes of hepatitis B virus (HBV) and eight genotypes of hepatitis D virus (HDV) are currently known. But the origins and long-term evolutionary histories of both HBV and HDV remain elusive and controversial.

  • Compared to other stages of life, the incidence of epileptic seizures in infants is particularly high. Animal models that recapitulate early-life epilepsies have improved our understanding and ability to treat them.

  • HOX genes encode transcription factors that help determine the body plan—including the positional identity of the female reproductive tract—during development. They also control the development and receptivity of the endometrium.

  • p53 has been shown to promote or block therapeutic responses in different tumors. Therefore, the status of p53 (active vs. inactive) may play a key role in therapeutic decisions for individual tumors in the future.

  • The longevity dividend (LD) refers to the benefits that result from medical interventions to delay aging. Dogs may be useful models to study the potential of LD, given our shared environment and similar medical infrastructure.

  • Voltage-gated calcium channels are ubiquitously expressed in the nervous system and play diverse roles. Although some are implicated in epilepsy (e.g., T-type channels in absence seizures), the roles of others remain unclear.

  • Fusidic acid inhibits protein synthesis in staphylococci in a unique manner. Reports of resistance have led to the development of new dosing regimens, which show promise in effectively treating skin, bone, and joint infections.

 

From Perspectives in Biology

Richard Sever interviews Joan Brugge