Leg Weakness â Causes and Treatment. Leg weakness is a serious symptom which is commonly ignored by many people. Leg weakness is highly based on ones own perception, so many people may not even realize that they have leg weakness. However, for practical purposes it is the first sign of paralysis because of nerve compression in the lower back. Leg weakness is frequently accompanied by loss of touch sensation and shooting pain, which generally come before the leg weakness.
Description: Arsenic's name comes from the Greek term for an arsenic compound, orpiment (arsenic trisulfide). Arsenic is a metalloid element, which, like phosphorus, has two main forms. One is a brittle, gray metallic form and the other is a yellow, non-metallic solid.Yellow arsenic is the more reactive and unstable of the pair. Arsenic is stable, being unaffected by air, water, most acids and alkalis.Arsenic has no liquid phase; the solid sublimes directly into a vapor.rsenic has semiconductor properties and is used in making transistors. It is also used in alloys, glass production, pyrotechnics and wood preservatives. An arsenic-gallium compound is used in making lasers.
Mechanisms of action and resistance to all-trans retinoic acid (ATRA) and arsenic trioxide (As 2 O 3) in acute promyelocytic leukemia.1  Akihiro TomitaAffiliated withDepartment of Hematology and Oncology, Nagoya University Graduate School of Medicine Email author.o overcome ATRA resistance, utilization of As 2 O 3 provides a preferable outcome, and recently, a synthetic retinoid Am80, which has a higher binding affinity with PML-RARÎ± than ATRA, has been tested in the clinical setting. However, no strategy attempted to date has been successful in overcoming As 2 O 3 resistance.