Maurice M. Rapport
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Maurice Rapport (1919 – 2011) was a biochemist who is best known for his work with the neurotransmitter
serotonin Serotonin () or 5-hydroxytryptamine (5-HT) is a monoamine neurotransmitter. Its biological function is complex and multifaceted, modulating mood, cognition, reward, learning, memory, and numerous physiological processes such as vomiting and vas ...
. Rapport,
Irvine H. Page Irvine Heinly Page (January 7, 1901 – June 10, 1991) was an American physiologist who played an important part in the field of hypertension for almost 60 years while working at the Cleveland Clinic as the first Chair of Research.Frohlich ED, Dus ...
, and Arda A. Green worked together to isolate and name the chemical. Alone, Rapport identified its structure and published his findings in 1948. Research since its discovery has implicated serotonin with mood regulation, appetite, sexual drive, and sleep as well as gastrointestinal roles. After his work with serotonin, Rapport did important research with cancer, cardiovascular disease, connective-tissue disease and demyelinating diseases.


Personal life

Maurice Rapoport was born on September 23, 1919, in Atlantic City, New Jersey. His mother changed the spelling of the family name to Rapport. His father was a furrier from Russia who left the family when Rapport was a small child. Rapport graduated from DeWitt Clinton High School in the Bronx, New York and went on to earn a bachelor's degree in chemistry from the
City College of New York The City College of the City University of New York (also known as the City College of New York, or simply City College or CCNY) is a public university within the City University of New York (CUNY) system in New York City. Founded in 1847, Cit ...
in 1940. He obtained his doctorate in organic chemistry in 1946 from California Institute of Technology.


Career


Serotonin research

In 1946, Maurice Rapport began working in the
Cleveland Clinic Foundation Cleveland Clinic is a nonprofit American academic medical center based in Cleveland, Ohio. Owned and operated by the Cleveland Clinic Foundation, an Ohio nonprofit corporation established in 1921, it runs a 170-acre (69 ha) campus in Cleveland ...
which was directed by Irvine H. Page. Since the 1860s, we had known of a substance in the serum of blood vessels that promotes clotting. Rapport was assigned the project of isolating this serum. They enlisted the help of Arda A. Green, a physical biochemist. The substance was acquired by leaving a test tube of the reagents in a cold room while Rapport went on vacation. When he returned he isolated the crystals of the desired substance. In a paper published in 1948, they gave it a name: serotonin, derived from “serum” and “tonic”. In 1948, Rapport left the Cleveland Clinic for a position at Columbia University and continued searching for serotonin's structure. In May 1949, the structure of serotonin was discovered to be 5-hydroxytryptamine (5-HT). Serotonin was found to be the same substance that Dr. Vittorio Erspamer had been studying since the 1930s called “enteramine”. Enteramine had a substantial place in scientific literature due to Erspamer's research into its role in smooth muscle constriction and intestinal tracts. Despite Erspamer's research, Rapport's discovery of serotonin's structure allowed other researchers to synthesize the substance and further study its role in the body. The structure of serotonin was given to
Upjohn The Upjohn Company was a pharmaceutical manufacturing firm founded in 1886 in Hastings, Michigan, by Dr. William E. Upjohn who was an 1875 graduate of the University of Michigan medical school. The company was originally formed to make ''friabl ...
Drug Company where researchers focused on the role of serotonin in the bodily processes such as blood vessel constriction. In 1954,
Betty Twarog Betty Mack Twarog (August 28, 1927 – February 6, 2013) was an American biochemist who was the first to find serotonin in mammalian brain. Life and career Betty M Twarog was born on August 28, 1927, in New York City. She attended Swarthmore ...
discovered the distribution of serotonin in the brain. Further research illustrated how serotonin plays a major role in the central nervous system and digestive tract. The understanding of serotonin has led to a progression in our view of mental illness and allowed the development of antidepressants and other drugs for hypertension and migraines.


Later research

After his work with serotonin, Rapport worked at the
Sloan-Kettering Institute for Cancer Research Memorial Sloan Kettering Cancer Center (MSK or MSKCC) is a cancer treatment and research institution in the borough of Manhattan in New York City, founded in 1884 as the New York Cancer Hospital. MSKCC is one of 52 National Cancer Institute– ...
. His contributions involved the activity and structures of lipids in relation to immunological activity. Specifically, he isolated cytolipin H from human cancer tissue in 1958. This led to a better understanding of our immune system. He also was a professor at the Albert Einstein College of Medicine. There he isolated two glysosphingolipids and studied antibodies to gangliosides. These findings were useful to further pharmacological studies relating these substances to demyelinating diseases such as
amyotrophic lateral sclerosis Amyotrophic lateral sclerosis (ALS), also known as motor neuron disease (MND) or Lou Gehrig's disease, is a neurodegenerative disease that results in the progressive loss of motor neurons that control voluntary muscles. ALS is the most comm ...
(ALS). In 1968, Rapport returned to Columbia University as chief of pharmacology and professor of biochemistry. The next year, he became the chief of the new neuroscience division which combined the chemistry, pharmacology, and bacteriology divisions. He retired in 1986 and remained in the neurology department of the Albert Einstein College of Medicine as a visiting professor.


Awards and honors

Because of this work with serotonin, Rapport was awarded the
Fulbright Scholarship The Fulbright Program, including the Fulbright–Hays Program, is one of several United States Cultural Exchange Programs with the goal of improving intercultural relations, cultural diplomacy, and intercultural competence between the people of ...
in 1952 to study with Dr. Daniel Bovet, who later won a Nobel Prize for his work in pharmacology.


References

{{DEFAULTSORT:Rapport, Maurice M. Jewish American scientists 1919 births 2011 deaths 21st-century American Jews City College of New York alumni California Institute of Technology alumni