lymphocyte and leukocyte traffic

The Emerging Role of Innate Immune Cells’ Network and the Cardio-Splenic Axis in Heart Failure

The Emerging Role of Innate Immune Cells’ Network and the Cardio-Splenic Axis in Heart Failure

A new study published in the journal Circulation Research is perhaps the first to show changes of the innate cells network and traffic in ischemic heart failure. Heart failure (HF) remains a major health issue, and evidence accumulated over the last decade has established immune activation or inflammation as a major pathogenic factor in chronic […]

Sympathetic neural control of circadian oscillations in leukocyte migration

Sympathetic neural control of circadian oscillations in leukocyte migration

In the August 2012 issue of Immunity, Scheiermann et al. describe a series of experiments that elegantly illustrate the patterns of leukocyte homing to the bone marrow and recruitment to skeletal muscle, and how they are affected by photic and adrenergic input. Scheiermann et al. begin by establishing that circadian oscillations are present in peripheral […]

Epinephrine and Mobilization of Cytotoxic Leukocytes

Epinephrine and Mobilization of Cytotoxic Leukocytes

A new Journal of Immunology study suggests that during acute stress the hormone epinephrine (adrenaline) is rapidly causing demargination of cytotoxic effector leukocytes from the marginal pool of blood vessels, thus releasing these cells into the circulation, which, in turn, may provide immediate protection from invading pathogens. Acute stress in humans is known to cause […]

Autonomic Nervous System Control of Leukocyte Distribution: Physiology and Implications for Common Human Diseases

Autonomic Nervous System Control of Leukocyte Distribution: Physiology and Implications for Common Human Diseases

Overview article Leukocytes are key components of the body’s defense system and the major subsets of leukocytes are granulocytes and lymphocytes. We and others have found that the distribution of these subsets are under the regulation of the autonomic nervous system. Of note, granulocytes express adrenergic receptors and the number and proportion of granulocytes increase […]