PROGESTERONE

prōjĕsˈtərōnˌ, female sex hormone that induces secretory changes in the lining of the uterus essential for successful implantation of a fertilized egg. A steroid, progesterone is secreted chiefly by the corpus luteum, a group of cells formed in the ovary after the follicle ruptures during the release of the egg cell. If fertilization does not take place, the secretion of progesterone decreases and menstruation occurs. If fertilization does occur, progesterone is secreted during pregnancy by the placenta and acts to prevent spontaneous abortion; the hormone also prepares the mammary glands for milk production. Progesterone is also synthesized from cholesterol in the cortex of the adrenal gland where it is a precursor for the synthesis of other steroids including testosterone. Synthetic compounds with progesteronelike activity have been developed that, along with estrogen, are used in oral contraceptives.

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The Columbia Encyclopedia, Sixth Edition Copyright© 2004, Columbia University Press. Licensed from Lernout & Hauspie Speech Products N.V. All rights reserved.

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Questia Books and Articles on: Progesterone
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books on: Progesterone  - 599 results

       More book Results: 1-10 11-20 21-30 31-40 41-50 >>  
 
1.
The Hormones: Physiology, Chemistry, and Applications - Vol. 1
Book by Gregory Pincus, Kenneth V. Thimann; Academic Press, 1948
Subjects: Hormones, Plant Hormones
...whether or not the transformation of progesterone to pregnanediol can occur in the adrenalectomized...evidence that the metabolic conversion of progesterone to pregnanediol or to some other biologically...liver. For example, Engel 54 injected progesterone into infantile rabbits in the Clauberg...
2.
Encyclopedia of Mental Health - Vol. 3
Book by Howard S. Friedman; Academic Press, 1998
Subjects: Mental Health--Dictionaries, Mental Illness--Dictionaries, Psychology--Dictionaries
...7. Relief from high-dose natural progesterone. 8. Symptoms occur in both ovular...amounts throughout the menstrual cycle. Progesterone is only present in the luteal phase...of amplitude of estrogen relative to progesterone are minimal. During pregnancy, when...
3.
Menopause the Natural Way
Book by Molly Siple, Deborah Gordon; John Wiley & Sons, 2001
Subjects: Menopause--Alternative Treatment, Menopause--Popular Works, Naturopathy
to take natural progesterone in a micronized form because unaltered natural progesterone is destroyed by stomach acids. Only micronized progesterone can be absorbed and used by the body. Micronized natural progesterone is widely used in Europe...
4.
Premenstrual Dysphorias: Myths and Realities
Book by Judith H. Gold, Sally K. Severino; American Psychiatric Press, 1994
Subjects: Premenstrual Syndrome, Premenstrual Syndrome--Classification, Premenstrual Syndrome--Social Aspects
Table 5-2. Progesterone and dydrogesterone Reference Treatment...Methods Results Andersch and Hahn 1985 Progesterone Modified CPRS scale 15 women; after 1-mo baseline, 100 mg vaginal progesterone or placebo twice daily, from 10 days...
5.
The Neurobehavioral Treatment of Epilepsy
Book by Yngve Løyning, David I. Mostofsky; Lawrence Erlbaum Associates, 1993
Subjects: Behavior Therapy, Epilepsy--Psychological Aspects
...effect of clobazam. Progesterone Therapy The strong experimental...clinical evidence of progesterones anticonvulsant action suggests that progesterone may be a useful form...reports of the use of progesterone for the treatment of...
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journal articles on: Progesterone  - 336 results

       More journal Results: 1-10 11-20 21-30 31-40 41-50 >>  
 
1.
Identification of Single-nucleotide Polymorphism in the Progesterone Receptor Gene and Its Association with Reproductive Traits in Rabbits
Journal article by R. Peiró, M. Merchán, M. A. Santacreu, M. J. Argente, M. L. García, J. M. Folch, A. Blasco; Genetics, Vol. 180, 2008
Subjects: Embryos, Generations, Genetics, Genotype & phenotype, Hogs, Parity, Progesterone, Rabbits, Standard deviation
...Single-nucleotide Polymorphism in the Progesterone Receptor Gene and Its Association with...effect on number of implanted embryos. Progesterone participates in the release of mature...contractility (Graham and Clarke 1997). Most progesterone functions are exerted through its interaction...
2.
Production of Androgens by Microbial Transformation of Progesterone in Vitro: A Model for Androgen Production in Rivers Receiving Paper Mill Effluent
Journal article by Ronald L. Jenkins, Elizabeth M. Wilson, Robert A. Angus, W. Mike Howell, Marion Kirk, Ray Moore, Marione Nance, Amber Brown; Environmental Health Perspectives, Vol. 112, 2004
...Androgens by Microbial Transformation of Progesterone in Vitro: A Model for Androgen Production...previously documented the presence of progesterone and androstenedione in the water column...trees are transformed by bacteria into progesterone and subsequently into 17alpha-hydroxyprogesterone...
3.
Association of Intrauterine and Early-Life Exposures with Diagnosis of Uterine Leiomyomata by 35 Years of Age in the Sister Study
Journal article by Aimee A. D'Aloisio, Donna D. Baird, Lisa A. Deroo, Dale P. Sandler; Environmental Health Perspectives, Vol. 118, 2010
Subjects: Estrogen--Health aspects, Estrogen--Research, Estrogens--Health aspects, Estrogens--Research, Progesterone--Health aspects, Progesterone--Research, Uterine fibroids--Research, Uterine fibroids--Risk factors
...affect later response to estrogen or progesterone and hence may influence development...et al. 1997). Both estrogen and progesterone have been implicated in fibroid pathogenesis...and womens response to estrogen or progesterone later in life and thus may influence...
4.
Cohort Fertility Patterns and Breast Cancer Mortality among U.s. Women, 1948-2003
Journal article by Patrick M. Krueger, Samuel H. Preston; Demographic Research, Vol. 18, 2008
Subjects: Baby boomers, Births, Breast cancer, Fertility, Mammography, Mortality, Progesterone, Risk factors, Tumors, Womens health
...significant factors in estrogen and progesterone receptor positive breast cancers but...analysis of three studies of estrogen and progesterone receptor positive breast cancer among...numbers contracting estrogen- and progesterone-receptor negative breast cancers...
5.
From One Womb to Another: Early Estrogenic Exposures and Later Fibroid Risk
Journal article by M. Nathaniel Mead; Environmental Health Perspectives, Vol. 118, 2010
Subjects: Isoflavones--Health aspects, Isoflavones--Research, Progesterone--Health aspects, Progesterone--Research, Soyfoods--Health aspects, Soyfoods--Research, Uterine fibroids--Complications and side effects, Uterine fibroids--Diagnosis, Uterine fibroids--Research, Uterine fibroids--Risk factors
...the most common cause for hysterectomy. Both estrogen and progesterone influence fibroid development, whereas early-life hormonal...uterine development and a womans response to estrogen or progesterone later in life. In a new study, researchers investigate...
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magazine articles on: Progesterone  - 258 results

       More magazine Results: 1-10 11-20 21-30 31-40 41-50 >>  
 
1.
Cancer Link: Gene Regulates Progesterone Effect on Breast Cells
Magazine article by Nathan Seppa; Science News, Vol. 170, December 2, 2006
Subjects: BRCA mutations--Health aspects, BRCA mutations--Research, Breast cancer--Care and treatment, Breast cancer--Research, Progesterone--Research
...Cancer Link: Gene Regulates Progesterone Effect on Breast Cells...protein moderates the hormone progesterones effect in breast cells...to calm those cells when progesterone urges them to divide and...times as likely to have progesterone receptors--proteins on...
2.
Progesterone Gel Gets High Marks for Targeted Delivery
Magazine article by Elena Portyansky; Drug Topics, Vol. 141, October 6, 1997
Subjects: Advantages, Fertility, Hormones, Product introduction, United States, Wyeth-Ayerst Laboratories
Progesterone Gel Gets High Marks for Targeted Delivery...of becoming moms, described the new progesterone product as "one less pain." Istkov...the recently approved Crinone 8% (progesterone gel), used in conjunction with infertility...
3.
Rage over Hormones: How Progesterone Affects Your Health
Magazine article by Maya Khankhoje; Herizons, Vol. 24, Fall 2010
Subjects: Baxter, Susan, Books, Canada, Estrogen, Physicians, Prior, Jerilynn, Womens health, Writers
Rage over Hormones: How Progesterone Affects Your Health by Maya Khankhoje...authors of The Estrogen Errors: Why Progesterone is Better for Women s Health...readers about the positive role progesterone plays in preventing heart disease...
4.
PMS 'Cure' Sidetracked
Magazine article by Carolyn Hommel; FDA Consumer, Vol. 18, May 1984
Subjects: H and K Pharmaceuticals--Investigations, Hovey, James E.--Investigations, Menstruation disorders--Research, Premenstrual syndrome--Causes of, Progesterone--Physiological aspects, United States. Food and Drug Administration, Women--Physiological aspects
...that PMS is caused by a deficiency of progesterone. And, the theory goes, the symptoms...administering large doses of naturally occurring progesterone from plant sources. Because natural progesterone in an oral form is absorbed by the liver...
5.
Seasonal Changes in Ovarian Function
Magazine article; Nutrition Health Review, 2008
Subjects: Developing countries--LDCs, Progesterone, Women
...adequate throughout all seasons. Low progesterone levels were observed in summer, when...implying ovarian suppression. Mean progesterone levels increased in the fall. This...variable accounting for suppressed progesterone levels in the summer. The womens nutritional...
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newspaper articles on: Progesterone  - 558 results

       More newspaper Results: 1-10 11-20 21-30 31-40 41-50 >>  
 
1.
The Power of Progesterone
Newspaper article; Tweed Daily News (Tweed Heads, Australia), October 22, 2011
Subjects: Progesterone
The Power of Progesterone. Byline: LIVING NATURALLY Olwen...well known is the importance of progesterone, which balances oestrogens effects...periods stop completely. I call progesterone the hormone of happiness, because...
2.
Heart Disease, Cancer and the Tantalising Evidence
Newspaper article; The Daily Mail (London, England), July 7, 2009
Subjects: Cancer, Cardiovascular diseases, Progesterone
...help protect women against dementia. The key is progesterone. With conventional HRT, theres little emphasis on boosting progesterone -- its oestrogen thats the real focus. In fact, progesterone (which is given in its chemical form, progestin...
3.
Saliva Test That Could Cut Premature Births; It Spots Women at Risk So Preventive Steps Can Be Taken
Newspaper article; The Daily Mail (London, England), July 22, 2009
Subjects: Infants (Premature), Medical tests, Premature infants, Progesterone, Women
...prematurely by detecting levels of progesterone, which help stop the womb contracting...before 34 weeks had far lower levels of progesterone than those who had their babies from...weeks and 64 delivered at term. Saliva progesterone levels were lower in the 12 women delivering...
4.
How a Saliva Test Could Cut Premature Births; It Spots Women at Risk So Preventive Steps Can Be Taken
Newspaper article; The Daily Mail (London, England), July 23, 2009
Subjects: Infants (Premature), Medical tests, Premature infants, Progesterone, Women
...prematurely by detecting levels of progesterone, which helps stop the womb contracting...before 34 weeks had far lower levels of progesterone than those who had their babies from...weeks and 64 delivered at term. Saliva progesterone levels were lower in the 12 women delivering...
5.
Test to Cut Early Births; Simple Saliva Check for Hormone Levels 'Could Reduce Pregnancy Complications'
Newspaper article; The Daily Mail (London, England), July 22, 2009
Subjects: Medical tests, Progesterone--Complications and side effects
...prematurely by detecting levels of progesterone, which help stop the womb contracting...before 34 weeks had far lower levels of progesterone than those who had their babies from...weeks and 64 delivered at term. Saliva progesterone levels were lower in the 12 women delivering...
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encyclopedia articles on: Progesterone  - 16 results

       More encyclopedia Results: 1-10 11-16 >>  
 
1.
Progesterone
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
PROGESTERONE projes t ron , female sex hormone that...implantation of a fertilized egg. A steroid , progesterone is secreted chiefly by the corpus luteum...does not take place, the secretion of progesterone decreases and menstruation occurs...
2.
Endocrine System
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...nearly all body cells; others, such as progesterone from the female ovary, which regulates...production of the hormones estrogen and progesterone by the ovaries and corpus luteum...characteristics. The most important function of progesterone is to prepare the uterine lining for...
3.
Hormone
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...and cortisone . The ovaries primarily secrete estrogen and progesterone and the testes testosterone . The adrenal cortex, ovaries...into the stomach. The placenta has been shown to secrete progesterone and chorionic gonadotropin. There is evidence that it even...
4.
Breast Cancer
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...of breast cancer or benign proliferative breast disease. A high cumulative exposure to female sex hormones (estrogen and progesterone) appears to increase the risk of some breast cancers. Hormonally related risk factors include early menarch (before age...
5.
Reproductive System
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...pelvic cavity below and to either side of the navel. The ovaries also secrete, in cyclic fashion, the hormones estrogen and progesterone (see menstruation ). After an ovum matures, it passes into the uterine tube, or fallopian tube . If sperm are present...
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