Abstract:
:This paper discusses a mechanism for converting heterochromatin into the more relaxed state of euchromatin. Actuation of such state conversion stems from disassembly of internal vesicles that are incapable of surviving when trapped within the inner chamber of mammalian nuclei.
journal_name
Med Hypothesesjournal_title
Medical hypothesesauthors
Matioli GTdoi
10.1016/s0306-9877(02)00233-5keywords:
subject
Has Abstractpub_date
2002-11-01 00:00:00pages
566-7issue
5eissn
0306-9877issn
1532-2777pii
S0306987702002335journal_volume
59pub_type
杂志文章abstract::Insufficient attention has been given to reports in the literature describing patients with symptomatic migraine who, in addition to, or instead of, the well-recognized zones of hypofusion, have zones of hyperperfusion, which can be interpreted as hypermetabolism due to neuronal activation. A new neural theory of migr...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1054/mehy.2000.1214
更新日期:2001-03-01 00:00:00
abstract::Humans vary in the gene that encodes for Vitamin K epoxide reductase complex (VKORC1). Recent research has documented the protective effect of Vitamin K on neural cells and its role in maintaining normal neural development. Of interest, specific neural effects of Vitamin K overlap with key brain development aberration...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2016.09.013
更新日期:2016-11-01 00:00:00
abstract::In the last decades, relevant efforts have been made to reduce the cancer incidence in the European Union. The prevention programmes against cancer have obtained satisfactory results except for colorectal cancer (CRC). Identification of risk factors is primordial to plan preventive strategies for CRC. We hypothesize t...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2007.03.041
更新日期:2008-01-01 00:00:00
abstract::A new hypothesis concerning the association of low levels of steroid hormones and hypercholesterolemia is proposed. This study presents data that concurrent restoration to youthful levels of multiple normally found steroid hormones is able to normalize or improve serum total cholesterol (TC). We evaluated 20 patients ...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/s0306-9877(02)00324-9
更新日期:2002-12-01 00:00:00
abstract::Radiotherapy (RT) has been established to improve both local control as well as overall survival rates in breast cancer. However, RT especially in left-sided breast cancer also irradiates a portion of the heart. Radiation associated toxicity to the heart assumes significance because of improval in survival of breast c...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2011.12.009
更新日期:2012-03-01 00:00:00
abstract::A review of the literature shows that x-ray induced lung adenomas in mice, breast adenomas in rats and thyroid adenomas in rats show the same approximate dependence for number of tumors vs dose. It is hypothesized that these benign tumors are due to cell proliferation. The controls of the G1 stage of the cell cycle ha...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(83)90049-x
更新日期:1983-01-01 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::There have been increasing numbers of reports that anti-osteoporosis drugs cause osteonecrosis. A typical example is medication-related osteonecrosis of the jaws (MRONJ) which can cause massive necrosis and defects of the jaws. Thus, the dosage and effects of anti-osteoporosis drugs should be re-examined. Our hypothes...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2019.109427
更新日期:2020-01-01 00:00:00
abstract::Too small size at birth (due to poor fetal growth and/or preterm delivery) has been associated with substantially elevated risks of the metabolic syndrome (dislipidemia, insulin resistance, hypertension), type 2 diabetes and cardiovascular disease in adulthood. The mechanisms of such "fetal origins" or "programming" o...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2005.08.020
更新日期:2006-01-01 00:00:00
abstract::Multiple reports show the efficacious usage of ECT for catatonia in individuals with autism. There are also a few reports showing that ECT improves self-injury in people with and without autism. In this hypothesis, self-injury in autism and other developmental disorders may be an alternate sign of catatonia, and as su...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2010.02.001
更新日期:2010-07-01 00:00:00
abstract::Lithium is a naturally occurring alkali metal, which living organisms ingest from dietary sources and which is also present in trace amounts in the human body. In much higher concentrations, lithium is effective as a medication for mania and mood swings including manic depressive disorders. Many studies have shown tha...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1054/mehy.2001.1375
更新日期:2001-10-01 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::Cancer cells have a greater need for energy and a ready supply of the building blocks necessary for the synthesis of macromolecules (nucleotides, protein, lipids) in order to duplicate genome and biomass. The hypothesis can be postulated that those precursors for synthetic processes, which can only be furnished by gly...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2012.06.002
更新日期:2012-09-01 00:00:00
abstract::Logic, a fundamental component of research in the exact sciences is often not applied in prominent fields of medical research. Investigation into the aetiopathogenesis of headache, vertigo, and fatigue--acknowledged as the commonest and amongst the most prominent and debilitating of symptoms known to mankind--may be s...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(90)90025-a
更新日期:1990-04-01 00:00:00
abstract::Recompression and oxygen breathing constitute the primary treatments for decompression sickness (DCS). Increasing the volume of distribution of dissolved gas with high-volume liquid therapy represents an alternative strategy to prevent or treat DCS. Furthermore, degassing of ingested and infused liquids would increase...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/s0306-9877(03)00045-8
更新日期:2003-05-01 00:00:00
abstract::The function of the gallbladder is questioned in a hypothesis postulating that all bile which enters this reservoir is totally absorbed to the liver and none of it flows back to the cystic duct and duodenum. Cholecystokinesis is believed to increase and maintain a gradient of intravesical pressure which increases the ...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(86)90006-x
更新日期:1986-10-01 00:00:00
abstract::Approximately 15 million Americans including over 5 million children suffer from asthma, the most common chronic disease in childhood. The prevalence of pediatric asthma has risen sharply over the past four decades, with the sharpest increases occurring in children younger than 6 years and in urban, predominantly mino...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2003.10.001
更新日期:2004-01-01 00:00:00
abstract::Mucous membrane pemphigoid (MMP) is a subtype of autoimmune subepidermal blistering diseases characterized by autoantibodies to structural components of the hemidesmosome primarily affecting mucous membranes. Inflammation-related progressive scarring can lead to serious complications, including blindness, and the dise...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2015.06.021
更新日期:2015-10-01 00:00:00
abstract::A case-control study was conducted in order to test the hypothesis that a reduced exposure to human seminal factors in the early reproductive life of women is a risk factor in breast cancer. The relative risk of exposure to the hypothetical semen-factor deficiency is 4.7 times greater for breast-cancer patients than f...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(78)90051-8
更新日期:1978-03-01 00:00:00
abstract::The incidence and prevalence of Crohn's disease (CD) among children in developed countries is extremely high. Although, dietary factors have long been implicated, to date no single causative element has been identified. Risks or benefits for CD from dietary elements would depend on their appropriate metabolism within ...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/s0306-9877(02)00401-2
更新日期:2003-03-01 00:00:00
abstract::Myocardial ischemia/reperfusion injury (I/RI) is the principal cause of mortality and morbidity in diabetic patients undergoing cardiac surgery. However, there is no specific measure available to protect diabetic hearts in this clinical setting. Our clinical studies showed that adenosine pre-treatment or post-treatmen...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2012.06.022
更新日期:2012-10-01 00:00:00
abstract::A hypothetical pathogenesis for a typical case of amyotrophic lateral sclerosis (ALS) follows from opinions of Rowland and results of neuroscientists at Baylor. ALS might typically result from an autoimmune disorder that causes IgG to enhance release of acetylcholine (ACh) from axon terminals. Motor neuron overactivit...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(94)90160-0
更新日期:1994-06-01 00:00:00
abstract::Recent findings demonstrate the vital role of endothelial progenitor cells in the homeostasis of the vessel wall and the development of atherosclerosis. Endothelial progenitor cells (EPCs) play important roles in repair-to-injury of arteries. Many evidences have shown Cardiovascular risk factors closely correlated wit...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2007.06.041
更新日期:2008-01-01 00:00:00
abstract::The incidence of insulin-dependent diabetes mellitus (IDDM), a chronic disease with a well-known genetic basis, is highest in Scandinavian and Sardinian populations. The high incidence of IDDM in Scandinavia and Sardinia, which were genetically isolated from the spread of agriculturists in Europe about 8000 years ago,...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1054/mehy.1997.0663
更新日期:1999-05-01 00:00:00
abstract::Acute stroke, including acute ischemic stroke (AIS) and acute hemorrhagic stroke, (AHS) is a common medical problem with particular relevance to the demographic changes in industrialized societies. In recent years, treatments for AIS have emerged, including thrombolysis with tissue plasminogen activator (t-PA). Althou...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2010.07.038
更新日期:2010-12-01 00:00:00
abstract::Hyperuricemia has been labeled both a risk factor and marker for cardiovascular pathology in addition to being associated with gout and kidney disease. Uric acid in vitro acts as a potent antioxidant capable of scavenging hydroxy radicals and peroxynitrite and reacting with nitric oxide. Some clinical studies have pro...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1054/mehy.2000.1221
更新日期:2001-06-01 00:00:00
abstract::The paper discusses a mechanism for reciprocal translocation of midsegments between two chromatids so that one of the segments is restacked in inverted configuration. Regarding malignant cells, such process could derive from anachronistic assembly of the nuclear envelope. ...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/s0306-9877(98)90277-8
更新日期:1998-06-01 00:00:00
abstract::The etiology of most kinds of dementia is still obscure and is probably multifactorial. We query whether excessive watching of television may contribute to the development of dementive processes for the following reasons: TV spectators are exposed to a mass of successive and rapid stimuli with little or no possibility...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(93)90128-d
更新日期:1993-11-01 00:00:00
abstract::Epoxides as reactive intermediates of estrogen metabolism have been considered to be potential precursors of the 2- and 4-hydroxy, catechol estrogens and even to be mutagenic/carcinogenic agents themselves. The labile nature of the intermediates has made proof of their existence difficult in natural biological conditi...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2016.04.012
更新日期:2016-06-01 00:00:00
abstract::Damaged DNA can lead to aneuploidy and/or chromosomal instability, which is believed to be major contributor to tumor progression. Genotoxic and oncogenic stresses-induced DNA damage activate the tumor suppressor pathways initiate DNA damage response (DDR). One of the cellular fates in response to DDR is permanent gro...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2010.01.001
更新日期:2010-06-01 00:00:00