Cobalt Toxicity Induces Retinopathy and Optic Neuropathy in Mice.

Purpose: To explore the effect of cobalt toxicity on vision.

Methods: A total of 103 wild-type (WT) mice were injected with cobalt chloride by two routes in different concentrations: single intravenous (IV) high or low doses (total, n = 43); or daily repeated intraperitoneal (IP) high (three days) or low (28 days, 56 days) dose, and low-dose cobalt with added minocycline (56 days) (total, n = 60); 10 WT mice served as a control group. An additional group of 17 immunodeficient NOD scid gamma (NSG) mice were injected IV or IP with cobalt, and 10 NSG mice served as control.

Biallelic mutations in EXOC3L2 cause a novel syndrome that affects the brain, kidney and blood.

Background: Dandy-Walker malformation features agenesis/hypoplasia of the cerebellar vermis, cystic dilatation of the fourth ventricle and enlargement of posterior fossa. Although Dandy-Walker malformation is relatively common and several genes were linked to the syndrome, the genetic cause in the majority of cases is unknown.

Objective: To identify the mutated gene responsible for Dandy-Walker malformation, kidney disease and bone marrow failure in four patients from two unrelated families.

Inferior turbinate schwannoma: report of a case.

Schwannomas of the nasal cavity are extremely rare. We evaluated a 42-year-old woman who presented with a 4-year history of slowly progressive nasal obstruction. The cause of the obstruction was identified as a schwannoma in the left inferior turbinate.