Cholinergic input to mouse visual cortex signals a movement state and acutely enhances layer 5 responsiveness.

Acetylcholine is released in visual cortex by axonal projections from the basal forebrain. The signals conveyed by these projections and their computational significance are still unclear. Using two-photon calcium imaging in behaving mice, we show that basal forebrain cholinergic axons in the mouse visual cortex provide a binary locomotion state signal.

Serotype and genotype diversity of dengue viruses circulating in India: a multi-centre retrospective study involving the Virus Research Diagnostic Laboratory Network in 2018.

Objectives: A retrospective study was undertaken to investigate the circulating dengue virus (DENV) serotypes and genotypes in India in 2018.

Methods: In total, 4963 samples referred to virus research diagnostic laboratories (n=21), the Indian Council of Medical Research-National Institute of Virology (ICMR-NIV) and ICMR-NIV field units (n=2) for diagnosis of dengue in 2018 were tested using a real-time reverse transcription polymerase chain reaction assay for the presence of DENV serotypes. Representative samples were sequenced for the envelope (E) gene.

Retinoic acid signaling regulates proliferation and lamina formation in the developing chick optic tectum.

The retinotectal system has been extensively studied for investigating the mechanism(s) for topographic map formation. The optic tectum, which is composed of multiple laminae, is the major retino recipient structure in the developing avian brain. Laminar development of the tectum results from cell proliferation, differentiation and migration, coordinated in strict temporal and spatial patterns.

The Prevalence and Impact of Preoperative Anemia in Patients Undergoing Cardiac Surgery for Rheumatic Heart Disease.

Objective: Many observational studies have demonstrated an association between preoperative anemia and adverse outcomes after cardiac surgery. However, there is a paucity of data on the impact of anemia in patients undergoing cardiac surgeries for rheumatic heart disease (RHD). This study was designed to examine the prevalence and impact of preoperative anemia in patients undergoing cardiac surgery for RHD.

An unusual cause of macular infarction: protein-losing enteropathy.

Protein-losing enteropathy is a multisystem disorder characterized by abnormally high loss of plasma proteins in the gastrointestinal tract. In addition to loss of plasma proteins there is also loss of anticoagulant globulins leading to a prothrombotic state in the body. Single case observation.