Abstract：
:Gender differences in stem cell population have recently been identified. Blood and tissue samples from women showed consistent elevation of hematopoietic stem cell populations, mesenchymal stem cell populations and endothelial progenitor cells compared to men of similar ages. We and others have shown an increase in hematopoietic stem cell population in pregnant and multiparous women compared to nulliparous women. We propose that pregnancy exposes women to increased levels of stem cells from many sources not available for nulliparous women or for men. During pregnancy, maternal fetal microchimerism results from trafficking of fetal and maternal blood across the placenta. Physiological changes in the maternal blood cellular milieu are also recognized during pregnancy and in the early post partum due to the presence of unique pregnancy associated tissues and hormones. These include the placenta, the amniotic fluid and cord blood. These tissues are highly enriched for different populations of stem cells including hematopoietic stem cells, mesenchymal stem cells and endothelial progenitor cells. Recent studies showed accelerated healing in women affected by cardiovascular insults and stroke, in part due to faster tissue regeneration and stem cell activity. We propose that gender differences in stem cell population are caused in part due to maternal exposure to fetal and unique pregnancy associated tissues, which are significantly enriched in different stem cell populations.
journal_name
Med Hypothesesjournal_title
Medical hypothesesauthors
El-Badri NS,Groer Mdoi
10.1016/j.mehy.2012.06.029subject
Has Abstractpub_date
2012-10-01 00:00:00pages
481-3issue
4eissn
0306-9877issn
1532-2777pii
S0306-9877(12)00306-4journal_volume
79pub_type
杂志文章abstract：:Hyperemesis gravidarum (HG) is the most severe form of illness within the spectrum of nausea and vomiting of pregnancy. Liver disease, usually consisting of mild serum transaminase elevation, occurs in almost 50% of patients with HG. While multiple risk factors have been proposed, the etiology and underlying mechanism...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2005.05.035
更新日期：2005-01-01 00:00:00
abstract：:This study investigated whether or not the anesthetic effect of ketamine in rats is dependent on adrenal gland hormones. The study was performed on two main rat groups, intact and adrenalectomized. Rat were divided into subgroups and given appropriate doses of ketamine, metyrapone or metyrosine. Durations of anesthesi...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2014.03.033
更新日期：2014-07-01 00:00:00
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journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2018.02.032
更新日期：2018-05-01 00:00:00
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journal_title：Medical hypotheses
pub_type： 杂志文章
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更新日期：2013-10-01 00:00:00
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journal_title：Medical hypotheses
pub_type： 杂志文章
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更新日期：2020-11-01 00:00:00
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journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1054/mehy.2001.1527
更新日期：2002-04-01 00:00:00
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journal_title：Medical hypotheses
pub_type： 杂志文章
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journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(88)90100-4
更新日期：1988-07-01 00:00:00
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journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2018.05.002
更新日期：2018-07-01 00:00:00
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journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2006.06.042
更新日期：2007-01-01 00:00:00
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journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1054/mehy.1995.0677
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journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2009.01.040
更新日期：2009-07-01 00:00:00
abstract：:Endemic cancer of the oesophagus in Africa is associated with the use of maize as the staple. In one African community endemic cancer of the oesophagus has been shown to have a strong statistical association with the consumption of foods based on maize in the meal form. A strong association with consumption of maize m...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2006.05.037
更新日期：2006-01-01 00:00:00
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journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2010.08.029
更新日期：2011-01-01 00:00:00
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journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2016.02.020
更新日期：2016-05-01 00:00:00
abstract：:The prevalence of atopic diseases (atopic dermatitis, bronchial asthma, allergic rhinitis) has considerably increased for the last 40 years. This tendency has coincided with the beginning of the epoch of the use of the topical corticosteroids, which have a potent immunomodulation action. This fact itself as well as a ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2003.12.059
更新日期：2005-01-01 00:00:00
abstract：:Dream periods during sleep have been observed in most mammals as early in history as antiquity. Sleep researchers at the University of Chicago, discovered the phase of rapid eye movement (REM) during sleep and connected it to the dream period. During this period, called the REM phase (after the American terminology), ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2019.03.027
更新日期：2019-06-01 00:00:00
abstract：:A nutraceutical that has exploded onto the prescription pad in recent years is the fat soluble vitamin, vitamin D. This is due to an increasing medical interest in the utility of the vitamin in the treatment and prevention of an array of diseases and ailments. Despite the continued debate over the correct dose, form a...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2013.07.022
更新日期：2013-10-01 00:00:00
abstract：:Lysosomes, lysosomal enzymes and oxidant processes are known to be involved in cancer processes. The prostasomes contain proteins and enzymes that would constitute pathways for the hydrolysis of proteins and peptides. However, integrated biochemical and cell biology studies are necessary to understand how lysosomal en...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2004.11.039
更新日期：2005-01-01 00:00:00
abstract：:Seroepidemiological, clinical and molecular findings suggest that the acquired immune deficiency syndrome virus human immunodeficiency virus-1 was introduced into the human species at the time (late 1950s) and in the geographic area (Zaire) in which millions of Africans were vaccinated with attenuated poliomyelitis vi...
journal_title：Medical hypotheses
pub_type： 历史文章,杂志文章
doi：10.1016/s0306-9877(97)90030-x
更新日期：1997-05-01 00:00:00
abstract：:The visualization of bioprosthesis leaflet morphology might help to better understand the underlying mechanism of dysfunction in degenerated aortic bioprosthesis. Because today such visualization of bioprosthesis leaflet morphology is intricate to impossible with other imaging techniques, we hypothesized that the proc...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2013.03.032
更新日期：2013-07-01 00:00:00
abstract：:It is well documented that depressed patients, as a result of their illness, often experience some difficulties with their memory. This hypothesis suggests a vice-versa; that it is a gradual impairment and ultimate failure of specific memory systems that may underpin the onset and continuation of a depressive illness....
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2007.01.046
更新日期：2007-01-01 00:00:00
abstract：:The prevalence of adult and childhood obesity are increasing. Most of the human newborn's body fat accumulates in the last half of intrauterine life. Fat in the fetus was thought to be mostly synthesized from glucose, but now it is commonly accepted that the bulk of it is the product of placental transfer of maternal ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2018.10.022
更新日期：2019-01-01 00:00:00
abstract：:The mechanism of pathogenesis of idiopathic Parkinson's disease (PD) is unknown. In a study of 200 PD patients and 200 age- and sex-matched controls, Strang noted a marked and statistically significant higher incidence of ulcers (diagnosed by X-ray or surgery) in the PD patients compared to the controls (14% to 4%). T...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1054/mehy.1997.0701
更新日期：1999-07-01 00:00:00
abstract：:Apoptosis is defined as the process of ''programmed cell death'' (PCD), during which many cells simultaneously die from within along a very orderly pattern. PCD is as intrinsic for cells as mitosis and is involved in both degenerative and developmental processes of organs and organisms. The pattern of apoptotic cell d...
journal_title：Medical hypotheses
pub_type： 社论
doi：10.1016/j.mehy.2007.07.006
更新日期：2008-01-01 00:00:00
abstract：:Despite the widespread use of antidepressant medication, there are no signs that the burden of depression and suicide is decreasing in the industrialised world. This is generating mounting scepticism on the effectiveness of this class of drugs as an approach for the treatment of mood disorders. These doubts are also f...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2005.02.037
更新日期：2005-01-01 00:00:00
abstract：:For almost 70 years, essential fatty acid deficiency has been known to be associated with skin disorders, vessel abnormalities, and increased tumorigenesis. However, the underlying molecular and cellular mechanism is largely unknown. Recently, it has been reported that essential fatty acids regulate cell adhesion by m...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1054/mehy.1998.1191
更新日期：2000-09-01 00:00:00
abstract：:Severe affective and behavioral dysregulation, labeled as severe mood dysregulation (SMD), is a widely spread phenomenon among adolescent psychiatric patients. This phenotype constitutes severe impairment across multiple settings, including various symptoms, such as non-episodic anger, mood instability, and hyperarous...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2011.07.019
更新日期：2011-10-01 00:00:00
abstract：:There are many published studies about the epigenetic effects of the prenatal and infant periods on health outcomes. However, there is very little knowledge regarding the effects of the intrapartum period (labor and birth) on health and epigenetic remodeling. Although the intrapartum period is relatively short compare...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2013.01.017
更新日期：2013-05-01 00:00:00
abstract：:Both, hamstring and ACL injuries are among the most typical injuries, particularly in change of direction and high speed running sports. They're also difficult to treat. Therefore, in the past few years, sports medicine practitioners and exercise scientists have mainly been focusing on the development and implementati...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2017.10.002
更新日期：2017-11-01 00:00:00
