Cecilia Lutwak-Mann (1900(?)-1987) was a Polish-British

endocrinologist Endocrinology (from ''endocrine'' + '' -ology'') is a branch of biology and medicine dealing with the endocrine system, its diseases, and its specific secretions known as hormones. It is also concerned with the integration of developmental events ...

and

physiologist Physiology (; ) is the scientific study of functions and mechanisms in a living system. As a subdiscipline of biology, physiology focuses on how organisms, organ systems, individual organs, cells, and biomolecules carry out chemical and ...

Career

She was educated at the

University of Lviv The Ivan Franko National University of Lviv (named after Ivan Franko, ) is a state-sponsored university in Lviv, Ukraine. Since 1940 the university is named after Ukrainian poet Ivan Franko. The university is the oldest institution of highe ...

(now in Ukraine), where she obtained a doctorate of medicine. She studied the

menstrual cycle The menstrual cycle is a series of natural changes in hormone production and the structures of the uterus and ovaries of the female reproductive system that makes pregnancy possible. The ovarian cycle controls the production and release of eg ...

cellular respiration Cellular respiration is the process of oxidizing biological fuels using an inorganic electron acceptor, such as oxygen, to drive production of adenosine triphosphate (ATP), which stores chemical energy in a biologically accessible form. Cell ...

, and

embryology Embryology (from Ancient Greek, Greek ἔμβρυον, ''embryon'', "the unborn, embryo"; and -λογία, ''-logy, -logia'') is the branch of animal biology that studies the Prenatal development (biology), prenatal development of gametes (sex ...

, and served as chief scientific officer of the

Agricultural Research Council The Agricultural and Food Research Council (AFRC) was a British Research Council responsible for funding and managing scientific and technological developments in farming and horticulture. History The AFRC was formed in 1983 from its predecessor ...

of Great Britain. Lutwak-Mann was known for discovering that the hormone

progesterone Progesterone (; P4) is an endogenous steroid and progestogen sex hormone involved in the menstrual cycle, pregnancy, and embryogenesis of humans and other species. It belongs to a group of steroid hormones called the progestogens and is the ma ...

acts on the

placenta The placenta (: placentas or placentae) is a temporary embryonic and later fetal organ that begins developing from the blastocyst shortly after implantation. It plays critical roles in facilitating nutrient, gas, and waste exchange between ...

to control

carbonic anhydrase The carbonic anhydrases (or carbonate dehydratases) () form a family of enzymes that catalyst, catalyze the interconversion between carbon dioxide and water and the Dissociation (chemistry), dissociated ions of carbonic acid (i.e. bicarbonate a ...

synthesis. She also co-authored the then-reference text on male reproductive function and

semen Semen, also known as seminal fluid, is a bodily fluid that contains spermatozoon, spermatozoa which is secreted by the male gonads (sexual glands) and other sexual organs of male or hermaphrodite, hermaphroditic animals. In humans and placen ...

("Male Reproductive Function and Semen: Themes and Trends in Physiology, Biochemistry and Investigative Andrology", 1981) with Thaddeus Mann.

Personal life

Lutwak-Mann married Thaddeus Mann in 1934, after they met in medical school. She was

Jewish Jews (, , ), or the Jewish people, are an ethnoreligious group and nation, originating from the Israelites of History of ancient Israel and Judah, ancient Israel and Judah. They also traditionally adhere to Judaism. Jewish ethnicity, rel ...

, and moved to Britain in 1935 to continue her research at

Cambridge Cambridge ( ) is a List of cities in the United Kingdom, city and non-metropolitan district in the county of Cambridgeshire, England. It is the county town of Cambridgeshire and is located on the River Cam, north of London. As of the 2021 Unit ...

. She died in 1987.

References

{{DEFAULTSORT:Lutwak-Mann, Cecilia Year of birth uncertain 1987 deaths Polish women scientists Women physiologists Women endocrinologists British endocrinologists Polish emigrants to the United Kingdom British physiologists 20th-century Polish scientists 20th-century British scientists 20th-century British women scientists University of Lviv alumni 20th-century Polish women