Functional recreation of age-related CD8 T cells in young mice identifies drivers of aging- and human-specific tissue pathology.

Mitigating effects of aging on human health remains elusive because aging impacts multiple systems simultaneously, and because experimental animals exhibit critical aging differences relative to humans. Separation of aging into discrete processes may identify targetable drivers of pathology, particularly when applied to human-specific features. Gradual homeostatic expansion of CD8 T cells dominantly alters their function in aging humans but not in mice.

Novelty-Sensitive Dopaminergic Neurons in the Human Substantia Nigra Predict Success of Declarative Memory Formation.

The encoding of information into long-term declarative memory is facilitated by dopamine. This process depends on hippocampal novelty signals, but it remains unknown how midbrain dopaminergic neurons are modulated by declarative-memory-based information. We recorded individual substantia nigra (SN) neurons and cortical field potentials in human patients performing a recognition memory task.

Limit Crystalloid Resuscitation after Traumatic Brain Injury.

Patients with traumatic brain injury (TBI) are often resuscitated with crystalloids in the emergency department (ED) to maintain cerebral perfusion. The purpose of this study was to evaluate whether crystalloid resuscitation volume impacts mortality in TBI patients. This was a retrospective study of trauma patients with head abbreviated injury scale score ≥2, who received crystalloids during ED resuscitation between 2004 and 2013.

Automatic detection of periods of slow wave sleep based on intracranial depth electrode recordings.

Background: An automated process for sleep staging based on intracranial EEG data alone is needed to facilitate research into the neural processes occurring during slow wave sleep (SWS). Current manual methods for sleep scoring require a full polysomnography (PSG) set-up, including electrooculography (EOG), electromyography (EMG), and scalp electroencephalography (EEG). This set-up can be technically difficult to place in the presence of intracranial EEG electrodes.

Clinical experience with a high definition exoscope system for surgery of pineal region lesions.

VITOM-90 (Karl Storz Endoscopy, Tuttlingen, Germany) is a new technology that can be used as an alternative to the operating microscope. We have found that this device substantially improves surgeon comfort during infra-tentorial supracerebellar approaches to pineal region masses, and now report our experiences. The VITOM-90 is a specially designed scope that is attached to a high definition (HD) digital camera and displayed on a HD video monitor.

Survival and prognostic factors of anaplastic gliomas.

Background: The prognosis of patients with anaplastic glioma tumors is relatively favorable compared with patients with glioblastoma multiforme.

Objective: To estimate survival differences between anaplastic astrocytoma (AA) and anaplastic oligodendroglioma (AO) patients and factors associated with survival prognosis.

Methods: A nationwide cohort of grade III glioma patients diagnosed between 1990 and 2008 was studied using the Surveillance, Epidemiology, and End Results registry.

Direct lateral interbody fusion (DLIF) at the lumbosacral junction L5-S1.

The direct lateral interbody fusion (DLIF), a minimally invasive lateral approach for placement of an interbody fusion device, does not require nerve root retraction or any contact with the great vessels and can lead to short operative times with little blood loss. Due to anatomical restrictions, this procedure has not been used at the lumbosacral (L5-S1) junction. Lumbosacral transitional vertebrae (LSTV), a structural anomaly of the lumbosacral spine associated with low back pain, can result in a level being wrongly identified pre-operatively due to misnumbering of the vertebral levels.

An effective nonchemical treatment for head lice: a lot of hot air.

Objectives: Head lice (Pediculus humanus capitis) are a major irritant to children and their parents around the world. Each year millions of children are infested with head lice, a condition known as pediculosis, which is responsible for tens of millions of lost school days. Head lice have evolved resistance to many of the currently used pediculicides; therefore, an effective new treatment for head lice is needed.