Abstract：
:Innumerable studies have been carried out by people to trace out those elements, find out the mechanisms that are vital to the maintenance of stemness. Amongst them, the one which is gaining importance in the recent past is the metabolism of stem cells, especially One carbon metabolism. Being associated directly or indirectly, with DNA and Histone methylation, One carbon metabolism has an important role to play as far as epigenetic regulation of stemness is concerned. Folic acid being a methyl donor, forms an important component of One Carbon metabolism, and thus its availability has a significant effect on the methylation reactions. The present hypothesis says, using embryonic stem cells grown in vitro as a model system, one can study how deficiency of Folate during pre implantation embryonic development influence the self renewal as well as pluripotency of stem cells, from the perspective of One carbon metabolism and epigenetic mechanisms. Findings from such a study can possibly provide an explanation for the observed intra uterine growth retardation seen under maternal micronutrient deficiency.
journal_name
Med Hypothesesjournal_title
Medical hypothesesauthors
Kasulanati S,Venkatesan Vdoi
10.1016/j.mehy.2017.12.019subject
Has Abstractpub_date
2018-02-01 00:00:00pages
24-26eissn
0306-9877issn
1532-2777pii
S0306-9877(17)30590-Xjournal_volume
111pub_type
杂志文章abstract：:Based on a consideration of biochemical mechanisms, rational methods for the prevention of cancer and for its positive regression are presented. It is demonstrated that the means employed are fundamentally opposed so that if the preventive method were to be used after the onset of cancer, it would only accelerate its ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(81)90030-x
更新日期：1981-04-01 00:00:00
abstract：:This hypothesis clearly proposes the true and previously undiscovered cause of male homosexuality or bisexuality and in most cases the predictability in infancy of the development of this sexuality in adulthood. It is based on compelling new evidence which has accumulated over many years. The fetal and neonatal period...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2016.06.006
更新日期：2016-09-01 00:00:00
abstract：:The authors support the hypothesis that a causative agent in Parkinson's disease (PD) might be either fungus or bacteria with fungus-like properties - Actinobacteria, and that their spores may serve as 'infectious agents'. Updated research and the epidemiology of PD suggest that the disease might be induced by environ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2017.05.022
更新日期：2017-07-01 00:00:00
abstract：:Although all multicellular organisms undergo structural and functional deterioration with age, senescence is not a uniform process. Rather, each organism experiences a constellation of changes that reflect the heterogeneous effects of age on molecules, cells, organs and systems, an idiosyncratic pattern that we refer ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2009.12.031
更新日期：2010-06-01 00:00:00
abstract：:The number of patients with diabetes has been expected around 300 million by 2025 and 366 million by 2030 by WHO. On the other hand, diabetic wounds as one of the common complications of diabetes represent major health challenges. Recently, wound care biological products have been proposed for treatment of chronic wou...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2015.03.004
更新日期：2015-06-01 00:00:00
abstract：:Sepsis is a life-threatening disease requiring rapid diagnosis and treatment. Steroid hormones (e.g., estradiol, dehydroepiandosterone) have been suggested to reduce the hyper-inflammatory response of the immune system and to improve outcome in sepsis. We hypothesize that the impact of steroid hormones on the metaboli...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2012.05.025
更新日期：2012-09-01 00:00:00
abstract：:Many parasites induce characteristic changes in their host. The effect of Toxoplasma gondii infection on the cerebrum and neuropsychiatric patients has been increasingly emphasized in recent years. T. gondii has a high affinity for brain tissue where tachyzoites may form tissue cysts and persist for a life long time. ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2009.04.013
更新日期：2009-11-01 00:00:00
abstract：:Homeostasis, or the maintenance of constant internal environment in the organism, is disrupted by injury. In this case, pathological defence reactions such as inflammation and healing take place in order to restore it. They succeed if etiological harmful factors are eliminated. In the opposite case, constant injury le...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(91)90247-v
更新日期：1991-10-01 00:00:00
abstract：:The present paper hypothesizes that the top positions in academic medicine are generally occupied by less talented and skilled physicians who find more time to spare for administrative activities as compared to physicians who are successful in their research projects or enjoy their skills as practicing clinicians. A p...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2007.01.045
更新日期：2007-01-01 00:00:00
abstract：:Preliminary but increasing evidence suggests that attention-deficit/hyperactivity disorder (ADHD), Tourette's syndrome (TS), and restless legs syndrome (RLS) may be comorbid. In the present article, we hypothesize that ADHD, TS, and RLS may be part of a spectrum, and that iron deficiency contributes to the pathophysio...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2007.10.013
更新日期：2008-01-01 00:00:00
abstract：:Meditation is used worldwide by millions of people for relaxation and stress relief. Given sufficient practice, meditators may also experience a variety of altered states of consciousness. These states can lead to a variety of unusual experiences, including physical, emotional and psychic disturbances. This paper high...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2014.07.015
更新日期：2014-10-01 00:00:00
abstract：:Numerous studies have shown that opioids and cannabinoids share some pharmacological properties. Accordingly, similarly to opioids, tolerance and dependence develops after chronic use of cannabinoids. Nitric oxide (NO) has been shown to play important roles both in opioid- and cannabinoid-induced tolerance and depende...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2009.02.013
更新日期：2009-08-01 00:00:00
abstract：:Skin cells produce endogenous opioids in response to light. This results in increased skin and plasma levels of endogenous opioids. Increased plasma levels of endogenous opioids may improve mood and affect behavior. The author suggests that improvement in mood after exposure to light may be related to the light-induce...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1054/mehy.2001.1423
更新日期：2001-11-01 00:00:00
abstract：:It is suggested that apart from aflatoxins, plant medicinal preparations containing active compounds imperatorin, dictamine, marmesin and heraclenin may be responsible for some human cancers in Nigeria and perhaps other parts of Africa. Therefore, in this paper, a hypothesis is put forward that these compounds or thei...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(83)90096-8
更新日期：1983-07-01 00:00:00
abstract：:The presence of the tumour induces important metabolic changes in the cancer patient which are not merely due to the fact that the tumour acts as a parasite, thus depleting the host of nutrients, but that are mainly the result of both tumoral and humoral mediators. The new metabolic status of the cancer patient may le...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/s0306-9877(98)90037-8
更新日期：1998-11-01 00:00:00
abstract：:The per review system for the assessment of research proposals is widely respected by working scientists. Nevertheless two problems associated with the operation of this system by the US National Institutes of Health are identified. First the scientist has no control over which committee will review an application and...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/s0306-9877(76)80019-9
更新日期：1976-01-01 00:00:00
abstract：:The staggering number of publications featuring the use of stem cells has revolutionized regenerative medicine research. Preclinical studies indicate that allogeneic human mesenchymal stem cells (MSCs) may be useful for the treatment of several clinical disorders, including sepsis, acute renal failure, acute myocardia...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2011.01.010
更新日期：2011-04-01 00:00:00
abstract：:Alpha-fetoprotein (AFP) is overexpressed in the majority of hepatocellular carcinomas (HCCs), and thus may offer attractive target for immunotherapy against this neoplasm. CD40 ligand (CD40L) is the major signal that induces B cells to efficiently present antigen to T cells, and CD40-activated B (CD40-B) lymphocyte ce...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2008.12.050
更新日期：2009-11-01 00:00:00
abstract：:Depression is often associated with insulin resistance, owing to cortisol overproduction; conversely, many studies suggest that diabetics are at increased risk for depression. Recent evidence indicates that insulin is transported through the blood-brain barrier and influences brain function via widely distributed insu...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(94)90075-2
更新日期：1994-10-01 00:00:00
abstract：:A mechanism of action for Panax ginseng (PG) and Eleutherococcus senticosus (ES) is proposed which explains how they could produce the paradoxical effect of sometimes increasing and sometimes decreasing the stress response. The mechanism suggests that this biphasic effect results from increased occupancy of positive a...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1054/mehy.2000.1163
更新日期：2001-05-01 00:00:00
abstract：:The "small-for-size" syndrome and "post-hepatectomy liver failure" refers to the development of liver failure (hyperbilirubinemia, coagulopathy, encephalopathy and refractory ascites) resulting from the reduction of liver mass beyond a certain threshold. This complication is associated with a high mortality and is a m...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2013.01.028
更新日期：2013-05-01 00:00:00
abstract：:Placebo controlled trials in disease states as currently constituted are designed to show a drug "works" when in fact it may not. Efficacy of this type may be constructed in trials that demonstrate some marginal superiority of a drug over placebo in disease states that do not take into account any potentialities of th...
journal_title：Medical hypotheses
pub_type： 社论,历史文章,评审
doi：10.1016/j.mehy.2010.01.038
更新日期：2010-05-01 00:00:00
abstract：:Parkinson's disease is a neurodegenerative condition characterized by tremor, rigidity, bradykinesia, and postural instability. Smoking is an inverse risk factor for Parkinson's disease, although the mechanism for this apparent neuroprotection is not definitively established. Smoking consistently upregulates nicotinic...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2009.03.053
更新日期：2009-12-01 00:00:00
abstract：:Human endometrium is a highly regenerative tissue and contains a low number of cells which have high replicative ability and differentiation efficiency. This has been identified by many scientists. When the fresh growth of tissue and blood vessels is shed during each menstrual cycle, some cells with regenerative capab...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2008.10.021
更新日期：2009-03-01 00:00:00
abstract：:Abdominal aortic aneurysms (AAAs) have traditionally been attributed to atherosclerosis, although there is increasing epidemiological, biochemical and genetic evidence that aneurysmal arterial disease is different from occlusive atherosclerosis. One of the most consistent biochemical findings in the aneurysmal aorta i...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(95)90193-0
更新日期：1995-07-01 00:00:00
abstract：:A general theory of neural circuitry is proposed wherein neural impulses travel in a continuous circuit from the brain to the extremities and back to the brain. At the extremities the impulse may be modified by the environment there. At the spinal column the return signal is compared with the outgoing signal and the a...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(94)90002-7
更新日期：1994-05-01 00:00:00
abstract：:Growing evidences suggest a link between normal tension glaucoma (NTG) and Alzheimer's disease (AD). Both of them are progressive neurodegenerative disorders. Recently researches provide a clue that optineurin may be a new common underlying risk factor involved in NTG and AD. OPTINEURIN (OPTN) gene coding for "optineu...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2011.06.040
更新日期：2011-10-01 00:00:00
abstract：:Unstable (CAG)n trinucleotide repeat microsatellites are hypothesized to cause schizophrenia. The (CAG)n microsatellite of dominant spinal cerebellar ataxia type 1 (SCA1) is a candidate schizophrenia gene. Autism results from expansions of (CGG)n and (GAA)n trinucleotide repeat stretches at fragile X syndrome (FRAXA),...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/s0306-9877(98)90080-9
更新日期：1998-09-01 00:00:00
abstract：:The time of re-evaluation of the role of human immunodeficiency viruses in the pathogenesis of acquired immune deficiency syndrome has now come, now that methods are available for the direct detection of human immunodeficiency viruses and for the detection of cellular anti-human immunodeficiency virus immune reactions...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/s0306-9877(96)90192-9
更新日期：1996-04-01 00:00:00
abstract：:The disturbances of the 11p15.5 chromosomal region are associated with Beckwith-Wiedemann syndrome, Russell-Silver syndrome, Wilms tumor, IMAGe syndrome, and idiopathic hemihyperplasia. The aim of this research was to examine the hypothesis that 11p15.5 initially became unstable in the European population about 200 ye...
journal_title：Medical hypotheses
pub_type： 历史文章,杂志文章
doi：10.1016/j.mehy.2018.09.008
更新日期：2018-12-01 00:00:00
