Abraham Kornzweig
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Abraham Leon Kornzweig, (September 18, 1900 – June 20, 1982), born in New York, a physician and
ophthalmologist Ophthalmology ( ) is a surgery, surgical subspecialty within medicine that deals with the diagnosis and treatment of eye disorders. An ophthalmologist is a physician who undergoes subspecialty training in medical and surgical eye care. Followin ...
specializing in geriatric ophthalmology. He opened a new field in investigative medicine, and founded the Society of Geriatric Ophthalmology. He was also widely known as the co-discoverer and namer of Bassen-Kornzweig Syndrome, also called Abetalipoproteinemia. It was first noted by the United States
physician A physician (American English), medical practitioner (Commonwealth English), medical doctor, or simply doctor, is a health professional who practices medicine, which is concerned with promoting, maintaining or restoring health through th ...
Frank Bassen, who partnered with Kornzweig to identify and describe causes and symptoms of the disease.


Biography

Born in New York City, Kornzweig graduated from
Columbia University Columbia University (also known as Columbia, and officially as Columbia University in the City of New York) is a private research university in New York City. Established in 1754 as King's College on the grounds of Trinity Church in Manhatt ...
in 1922, and from the
New York University School of Medicine NYU Grossman School of Medicine is a medical school of New York University, a private research university in New York City. It was founded in 1841 and is one of two medical schools of the university, with the other being the Long Island School of ...
in 1925. From 1925 to 1928, He trained as an intern at
Mount Sinai Hospital, New York Mount Sinai Hospital, founded in 1852, is one of the oldest and largest teaching hospitals in the United States. It is located in East Harlem in the New York City borough of Manhattan, on the eastern border of Central Park stretching along Madis ...
, including study in pathology under the well-known Bernard Samuels, after which he entered private practice until 1934. He returned to Mount Sinai for a residency in ophthalmology and in 1936, received a diplomate. For 17 years, he taught at NYU-Bellevue Medical School, where he was an Associate Clinical Professor; he subsequently taught at Mount Sinai School of Medicine, where he was Clinical Professor, and eventually Emeritus Professor, of Ophthalmology. He was also Director of Research and Chief of Ophthalmology at the Jewish Home and Hospital for the Aged.Steven M. Podos, M.D. "Abraham Kornzweig." ''International Ophthalmology.'' Volume 6, Number 1 / January, 1983. He retired in poor health in 1972, although he continued to work on his research projects until his death in 1982. He married Chifra Goldberg, a naturalized citizen, born in Yass, Rumania and they had one daughter.


Disease

Bassen-Kornzweig disease, also called Bassen-Kornzweig Syndrome, is a rare congenital disorder in which the body fails to produce
chylomicron Chylomicrons (from the Greek χυλός, chylos, meaning ''juice'' (of plants or animals), and micron, meaning ''small particle''), also known as ultra low-density lipoproteins (ULDL), are lipoprotein particles that consist of triglycerides (85 ...
s, a low density
lipoprotein A lipoprotein is a biochemical assembly whose primary function is to transport hydrophobic lipid (also known as fat) molecules in water, as in blood plasma or other extracellular fluids. They consist of a triglyceride and cholesterol center, sur ...
(LDL) and very low density lipoprotein (VLDL). Individuals with this condition are unable to properly digest fats. Symptoms include
ataxia Ataxia is a neurological sign consisting of lack of voluntary coordination of muscle movements that can include gait abnormality, speech changes, and abnormalities in eye movements. Ataxia is a clinical manifestation indicating dysfunction of ...
, peripheral neuropathy and other forms of nerve dysfunction. Treatment includes vitamin E. Characteristics of the syndrome include the presence of acanthocytes (burr-cell malformation of the erythrocytes), and the reduction or even absence of B- lipoproteins. Complications include retinitis pigmentosa,Bassen F A & Kornzwelg A L. "Malformation of the erythrocytes in a case of atypical retinitis pigmentosa." ''Blood.'' 5:381-7, 1950. degenerative changes in the central nervous system involving the cerebellum and long tracts, fatty
diarrhea Diarrhea, also spelled diarrhoea, is the condition of having at least three loose, liquid, or watery bowel movements each day. It often lasts for a few days and can result in dehydration due to fluid loss. Signs of dehydration often begin wi ...
,
ataxia Ataxia is a neurological sign consisting of lack of voluntary coordination of muscle movements that can include gait abnormality, speech changes, and abnormalities in eye movements. Ataxia is a clinical manifestation indicating dysfunction of ...
, areflexia, demyelination, defective intestinal lipid absorption with low serum cholesterol level, intestinal malabsorption, amaurosis, retarded growth, and steatorrhea. Intellectual development may be slightly retarded.Barry G. Firkin and Judith A. Whitworth. "Bassen-Kornzweig Syndrome." ''Dictionary of Medical Eponyms. '' The Parthenon Publishing Group. 1989. New edition in 2002. Many afflicted with the syndrome are unable to walk."Bassen Kornzweig's Disease." ''Twenty-first Taber's Cyclopedic Medical Dictionary,'' Unbound Medicine. 2009. The syndrome appears in infancy. Affected children appear normal at birth but usually fail to thrive during their first year. The syndrome may predominate in males (71%). Most cases occur in children of Jewish descent, especially among
Ashkenazi Ashkenazi Jews ( ; he, יְהוּדֵי אַשְׁכְּנַז, translit=Yehudei Ashkenaz, ; yi, אַשכּנזישע ייִדן, Ashkenazishe Yidn), also known as Ashkenazic Jews or ''Ashkenazim'',, Ashkenazi Hebrew pronunciation: , singu ...
Jews. The disease is transmitted as an
autosomal recessive In genetics, dominance is the phenomenon of one variant (allele) of a gene on a chromosome masking or overriding the effect of a different variant of the same gene on the other copy of the chromosome. The first variant is termed dominant and t ...
trait. It is also commonly recognized as a betalipoprotein deficiencyFrank A. Bassen, M.D. (Paid Obituary). ''New York Times''. 23 February 2003. or abetalipoproteinemia.


Publications

Kornzweig's publications include over 50 articles and books, beginning in 1948 with a series of articles on the "Eye in Old Age", and concluding with, in 1980, "New Ideas for the Old Eye."


Partial list

*Frank A. Bassen, M.D. and Abraham L. Kornzweig, M.D. "Malformation of the Erythrocytes in a Case of atypical Retinitis Pigmentosa." ''Blood'', 1950, Vol. 5, No. 4, pp. 381–387. *Abraham L. Kornzweig, M.D.; Frank A. Bassen M.D. "Retinitis Pigmentosa, Acanthocytosis, and Heredodegenerative Neuromuscular Disease." ''AMA Arch Ophthalmology.'' 1957;58(2):183–187. *Abraham L. Kornzweig, MD; Ira Eliasoph, MD; Morris Feldstein, MD. "Selective Atrophy of the Radial Peripapillary Capillaries in Chronic Glaucoma." ''Archives of Ophthalmology.'' 1968;80(6):696–702. *Abraham L. Kornzweig, MD; Ira Eliasoph, MD; Morris Feldstein, MD. "The Retinal Vasculature in Macular Degeneration." ''Archives of Ophthalmology.'' 1966;75(3):326–333. *Abraham L. Kornzweig, MD; Ira Eliasoph, MD; Morris Feldstein, MD. "Occlusive Disease of Retinal Vasculature." ''Archives of Ophthalmology.'' 1964;71(4):542–551. *Morris Feldstein, M.D.; Abraham L. Kornzweig, M.D.; Julius Schneider, M.D. "Ocular Surgery in the Aged" ''Journal of the American Medical Association.'' 1959;170(14):1621–1625.


See also

* Neuroacanthocytosis


Sources

{{DEFAULTSORT:Kornzweig, Abraham 1900 births 1982 deaths American ophthalmologists Columbia University alumni New York University Grossman School of Medicine alumni People from New York City