Find out more about ExxonMobil Fuels & Lubricants â our vision, who and where we are, and how we operate. Our products and brands The most respected lubricants brands worldwide, recognized for performance and innovation.
Researchers have determined that Werner Syndrome is caused by abnormal changes (mutations) of a gene (known as the WRN gene) located on the short arm of chromosome 8 (8p12-11.2).* More than 80 different mutations of the WRN gene have been identified in individuals with the disorder.ymptoms of the following disorders can be similar to those of Werner Syndrome. Comparisons may be useful for a differential diagnosis: Hutchinson-Gilford Progeria Syndrome is a very rare disorder of childhood characterized by premature aging, short stature, and characteristic facial features.
Parinaud's Syndrome, also known as dorsal midbrain syndrome is a group of abnormalities of eye movement and pupil dysfunction. It is caused by lesions of the upper brain stem and is named for Henri Parinaud (1844â1905), considered to be the father of French ophthalmology. Parinaud's Syndrome is a cluster of abnormalities of eye movement and pupil dysfunction, characterized by: 1. Paralysis of upgaze: Downward gaze is usually preserved. This vertical palsy is supranuclear, so doll's head maneuver should elevate the eyes, but eventually all upward gaze mechanisms fail. 2. Pseudo-Argyll Robertson pupils: Accommodative paresis ensues, and pupils become mid-dilated and show light-near dissociation.