Biomaterial Database

Subacute myelo-optico-neuropathy (SMON) in Japan. With special reference to the autopsy cases. 1982

Y Egashira, and H Matsuyama

Subacute myelo-optico-neuropathy (SMON) is a predominantly sensory neuropathy with peculiar clinical and histopathological features which began to appear in Japan around 1960, continued to increase and reached the highest annual incidence of 2,814 in 1959. Clioquinol or chinoform was strongly suspected as the cause of the disease because the iron chelate of chinoform was identified in the green urine of the patients. It is now believed that chinoform is the cause of SMON for the following reasons: 1) The retrospective investigation indicated that the majority of SMON patients had been given chinoform. 2) Dogs and monkeys orally given chinoform for many days in plural institutions showed exactly the same degenerative changes in the posterior and lateral funiculi of the spinal cords as the human patients. One institution obtained the same lesions also in cats. 3) The number of new patients has greatly decreased after the production and sale of chinoform were banned in September 1970. The pathology of the SMON patients and experimental chronic chinoform intoxication in animals were reviewed with some etiological comments.

UI	MeSH Term	Description	Entries
D007464	Clioquinol	A potentially neurotoxic 8-hydroxyquinoline derivative long used as a topical anti-infective, intestinal antiamebic, and vaginal trichomonacide. The oral preparation has been shown to cause subacute myelo-optic neuropathy and has been banned worldwide.	Chloroiodoquine,Iodochlorhydroxyquin,Iodochloroxyquinoline,5-Chloro-7-iodo-8-quinolinol,Chinoform,Entero-Septol,Entero-Vioform,Enteroquinol,Vioform,5 Chloro 7 iodo 8 quinolinol,Entero Septol,Entero Vioform,EnteroSeptol,EnteroVioform
D008297	Male		Males
D008875	Middle Aged	An adult aged 45 - 64 years.	Middle Age
D009187	Myelitis	Inflammation of the spinal cord. Relatively common etiologies include infections; AUTOIMMUNE DISEASES; SPINAL CORD; and ischemia (see also SPINAL CORD VASCULAR DISEASES). Clinical features generally include weakness, sensory loss, localized pain, incontinence, and other signs of autonomic dysfunction.	Myelopathy, Inflammatory,Spinal Cord Inflammation,Subacute Necrotizing Myelitis,Infectious Myelitis,Inflammation, Spinal Cord,Inflammations, Spinal Cord,Inflammatory Myelopathies,Inflammatory Myelopathy,Myelitides,Myelitides, Subacute Necrotizing,Myelitis, Infectious,Myelitis, Subacute Necrotizing,Myelopathies, Inflammatory,Necrotizing Myelitides, Subacute,Necrotizing Myelitis, Subacute,Spinal Cord Inflammations,Subacute Necrotizing Myelitides
D009902	Optic Neuritis	Inflammation of the optic nerve. Commonly associated conditions include autoimmune disorders such as MULTIPLE SCLEROSIS, infections, and granulomatous diseases. Clinical features include retro-orbital pain that is aggravated by eye movement, loss of color vision, and contrast sensitivity that may progress to severe visual loss, an afferent pupillary defect (Marcus-Gunn pupil), and in some instances optic disc hyperemia and swelling. Inflammation may occur in the portion of the nerve within the globe (neuropapillitis or anterior optic neuritis) or the portion behind the globe (retrobulbar neuritis or posterior optic neuritis).	Neuropapillitis,Retrobulbar Neuritis,Anterior Optic Neuritis,Posterior Optic Neuritis,Anterior Optic Neuritides,Neuritides, Anterior Optic,Neuritides, Optic,Neuritides, Posterior Optic,Neuritides, Retrobulbar,Neuritis, Anterior Optic,Neuritis, Optic,Neuritis, Posterior Optic,Neuritis, Retrobulbar,Neuropapillitides,Optic Neuritides,Optic Neuritides, Anterior,Optic Neuritides, Posterior,Optic Neuritis, Anterior,Optic Neuritis, Posterior,Posterior Optic Neuritides,Retrobulbar Neuritides
D010523	Peripheral Nervous System Diseases	Diseases of the peripheral nerves external to the brain and spinal cord, which includes diseases of the nerve roots, ganglia, plexi, autonomic nerves, sensory nerves, and motor nerves.	Peripheral Nerve Diseases,Peripheral Neuropathies,PNS (Peripheral Nervous System) Diseases,PNS Diseases,Peripheral Nervous System Disease,Peripheral Nervous System Disorders,Nerve Disease, Peripheral,Nerve Diseases, Peripheral,Neuropathy, Peripheral,PNS Disease,Peripheral Nerve Disease,Peripheral Neuropathy
D010525	Peripheral Nerves	The nerves outside of the brain and spinal cord, including the autonomic, cranial, and spinal nerves. Peripheral nerves contain non-neuronal cells and connective tissue as well as axons. The connective tissue layers include, from the outside to the inside, the epineurium, the perineurium, and the endoneurium.	Endoneurium,Epineurium,Perineurium,Endoneuriums,Epineuriums,Nerve, Peripheral,Nerves, Peripheral,Perineuriums,Peripheral Nerve
D004064	Digestive System	A group of organs stretching from the MOUTH to the ANUS, serving to breakdown foods, assimilate nutrients, and eliminate waste. In humans, the digestive system includes the GASTROINTESTINAL TRACT and the accessory glands (LIVER; BILIARY TRACT; PANCREAS).	Ailmentary System,Alimentary System
D004285	Dogs	The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065)	Canis familiaris,Dog
D005260	Female		Females