Langerhans' cell histiocytosis of the temporal bone: A case report.

Langerhansmporal histiocytosis (LCH) refers to a group of diseases that are characterized by the primary pathogenesis of an abnormal polyclonal proliferation of Langerhans cells that affect different structures of the human body, including the temporal bone. Thus far, the etiology of LCH remains unclear. Diagnosis of LCH is based on a synthetic analysis of the clinical presentations, as well as on features of imaging and histopathology.

[Bilateral versus unilateral sudden sensorineural hearing loss].

Objective: To analyze the clinical characteristics and treatment effect between bilateral (bi-) and unilateral (uni-) sudden sensorineural hearing loss (SSNHL).

Method: Four hundred and eighty cases of SSNHL were retrospective study, which were divided into two groups of bi-SSNHL (n = 40) and uni-SSNHL (n = 440). Clinical characteristics and treatment effects were compared of the two groups.

FMRFamide modulates outward potassium currents in mouse olfactory sensory neurons.

1. The olfactory system can detect the presence of low concentrations of odourant molecules and discriminate even slight differences among molecules with a very similar chemical structure. The detection and discrimination of odourants are correlated with the electrophysiology of the olfactory sensory neurons.