Abstract:
:Knowledge about how information is stored in neurons of animals and in the human brain is still incomplete. A hypothesis related to long-term changes in synaptic efficiency has strong experimental support, but does not seem to be able to explain all observations. It has recently been proposed that magnetite together with a prion-like protein could be involved in a tandem mechanism for storage of memory in neurons in which electric impulses are received and reshaped by the magnetite to a form which can be accepted by the protein. The magnetite crystals can be magnetized by an electrical impulse, but they cannot hold the magnetism, which drops to zero after each impulse. Therefore, magnetite cannot be the substance in which information is stored. In the present paper we explain how a tandem mechanism could function in a neuron in which magnetite is situated together with a prion-like protein close to the cell surface membrane of the axon. We assume in addition that the information is stored in special storage neurons. With this, we propose a new hypothesis for information storage in neurons which could operate in addition to synaptic plasticity, but perhaps in different neurons.
journal_name
Med Hypothesesjournal_title
Medical hypothesesauthors
Alfsen EM,Størmer FC,Njå A,Walløe Ldoi
10.1016/j.mehy.2018.07.003subject
Has Abstractpub_date
2018-10-01 00:00:00pages
98-101eissn
0306-9877issn
1532-2777pii
S0306-9877(18)30169-5journal_volume
119pub_type
杂志文章abstract::The right timing of surgical intervention in patients with aortic insufficiency is the crucial precondition for optimal postoperative course. To meet this demand, it is essential to have precise knowledge of the pathogenesis of this disease. Within the rabbit model of aortic insufficiency, four periods of adaptational...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(95)90239-2
更新日期:1995-12-01 00:00:00
abstract::In this communication I propose a technique for manipulating the idiotype anti-idiotype network with the aim of enhancing the immune response to tumors. The theoretical basis for this technique follows from Jerne's network theory of the immune system. By tolerizing the host to immunoglobulin bearing idiotypes directed...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(85)90029-5
更新日期:1985-11-01 00:00:00
abstract::Neuronal degeneration in the post-menopausal term leads to cognitive symptoms such as anxiety, difficulty in concentrating, overreacting to minor upsets, quickly becoming irritated and forgetfulness in approximately 70-80% of all women around the world. These symptoms, which result from microtubule damage in the axon ...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2013.06.013
更新日期:2013-09-01 00:00:00
abstract:BACKGROUND:Ovarian cancer has a different prognosis between early (I and II) and advanced stage (III and IV). The mechanism of disease progression is unknown, but patients with advanced disease may have a higher propensity for seeding of the abdominal cavity early in the disease process than those with early stage. The...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2013.01.027
更新日期:2013-05-01 00:00:00
abstract::The article introduces the hypothesis that aquaporin 1 of intramuscular capillary endothelial cells may enhance the capability of the skeletal myofiber regeneration. Evidence for the hypothesis is based on the indication obtained from our previous muscle xenograft study into athymic nude mice, and the indications prop...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2006.07.056
更新日期:2007-01-01 00:00:00
abstract::Scrub typhus is a mite borne infectious disease which has re-emerged in India in the 3rd millennium after years of quiescence. In this review, the authors hypothesize the various factors responsible for resurgence of this disease. The main drivers that could have contributed to the upsurge in scrub typhus cases in pas...
journal_title:Medical hypotheses
pub_type: 杂志文章,评审
doi:10.1016/j.mehy.2018.03.019
更新日期:2018-06-01 00:00:00
abstract::Randomized clinical trials comparing neoadjuvant chemotherapy (NAC) followed by surgery with initial surgery in cervical cancer reported conflicting results. We provided a hypothesis explaining the different outcomes between trials. NAC was reported to make a lymph node metastasis smaller. Smaller tumors are hard to d...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2009.05.026
更新日期:2009-12-01 00:00:00
abstract::On the basis of the physical properties of magnetic fluids a new technique of whole-body hyperthermia is proposed. Subdomain dextran stabilized magnetite particles injected into the blood-stream can be efficiently heated using an external high-frequency magnetic field, which allows rapid and controllable delivery of h...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1054/mehy.2000.1089
更新日期:2000-12-01 00:00:00
abstract::A birth involving shoulder dystocia can rapidly deteriorate-from a fetus with a reassuring tracing in the minutes before birth, to a neonate needing aggressive resuscitation. Infants experiencing a traumatic birth involving shoulder dystocia may be severely compromised, even when the preceding labor was uncomplicated....
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2008.11.019
更新日期:2009-04-01 00:00:00
abstract::The role of ozone on earth is controversial, as in the stratosphere it is protective against excessive ultra violet irradiation, and in the troposphere it is toxic for animals and plants. The effectiveness of ozone against pathogens is well recognized and ozone appears to be the best agent for sterilization of water. ...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/s0306-9877(96)90016-x
更新日期:1996-02-01 00:00:00
abstract::Structures which morphologically resemble treponemes have been found in material from patients suffering from latent or late latent syphilis, many of whom have received treatment in the past. These structures were also found in the blood or spinal fluid (SF) of asymptomatic patients with both positive and negative ser...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(92)90137-2
更新日期:1992-09-01 00:00:00
abstract::The exact aetiology of mitral valve prolapse (MVP) is unknown, although this is the most common cardiac valvular abnormality currently detected. MVP has high incidence in young individuals, particularly during the second and third decades. These individuals are usually of a slender body habitus indicating higher rates...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1054/mehy.1999.0016
更新日期:2000-02-01 00:00:00
abstract::The hypothesis proposed is that restoration of functional capacity of denervated diaphragm may be achieved by reinervating it with vagus nerve. Following trauma, carcinomatose infiltration, and/or large thoracic surgery and neck surgery, phrenic nerve is frequently injured. Reinervation even in the most favourable con...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/s0306-9877(02)00414-0
更新日期:2003-03-01 00:00:00
abstract::It is known, that initial events in atherosclerosis arise in the intima with a parallel influx of inflammatory cells. I propose the opposite - that the disease onset begins from the media vascular smooth muscle cell (VSMC) involvement and through its utilization of modified low-density lipoproteins (LDL), and free or ...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2014.12.002
更新日期:2015-02-01 00:00:00
abstract::It is well known that chronic hepatitis C is associated with insulin resistance and metabolic syndrome which are risk factors for atherosclerosis and coronary heart disease. As a result, chronic hepatitis C might be thought, through its association with metabolic syndrome, to increase the risk of myocardial infarction...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2014.01.030
更新日期:2014-04-01 00:00:00
abstract::Although many risk factors influence atherogenesis, LDL appears to play a primary role in this process. In prospective epidemiology, coronary risk increases as LDL cholesterol increases, throughout the entire range of concentrations encountered in healthy humans. Coronary risk is minimal in individuals and populations...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2003.12.051
更新日期:2005-01-01 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::Prion protein, known as Prp(c), is a GPI-anchored membrane bound glycoprotein ubiquitously expressed in the body. To date, the precise nature of its physiological role remains a mystery. The prion protein's presence on neurons and immune effector cells suggests a dual neurological and immunological function. Some cons...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2005.02.038
更新日期:2005-01-01 00:00:00
abstract::Inadequately responsive glycaemic control is an important factor in the causation of diabetic end-organ damage. Artificial or hybrid bioartificial pancreases can provide responsive glycaemic control that can reduce the enormous personal suffering and socio-economic costs of diabetes. However, they share the shortcomin...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2006.08.047
更新日期:2007-01-01 00:00:00
abstract::The pars tuberalis is a distinct subdivision of the pituitary gland but its function remains poorly understood. Suprasellar tumors in this pars tuberalis region are frequently accompanied by hyperprolactinemia. As these tumors do not immunoreact for any of the established pituitary hormones, they are classified as non...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2008.08.030
更新日期:2009-03-01 00:00:00
abstract::Although it is well established that components of wheat gluten and structurally-related cereal proteins produce intestinal damage in Coeliac disease (CD), the primary defect which confers upon the host susceptibility to these dietary substances remains a mystery. To date, three main hypotheses have been framed to exp...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(88)90093-x
更新日期:1988-07-01 00:00:00
abstract::For many years there was a general belief that the enzyme renin, having been secreted into the circulation by the kidney in response to appropriate stimuli, initially generates the inactive decapeptide angiotensin I in the bloodstream. This is then converted to the biologically active octapeptide angiotensin II by ang...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1054/mehy.2000.1201
更新日期:2001-04-01 00:00:00
abstract::Gas formed in tissues and the circulating blood due to decompression is thought to be a significant factor in the progression of decompression illness (DCI). DCI is a potential problem for a growing population of professional and recreational divers. We hypothesise that these gas bubbles are not the causative agent in...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2008.11.022
更新日期:2009-04-01 00:00:00
abstract::Studies on receptor stability suggest that functional conversion of adrenoceptors between alpha and beta can occur in mammalian myocardium due to variations in the environment such as temperature changes, pH or hormonal changes. If adrenoceptors of the respiratory system behave similarly, heat and water loss of airway...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(88)90011-4
更新日期:1988-12-01 00:00:00
abstract::In endemic pemphigus foliaceus (EPF) or "fogo selvagem" the epidemiological evidence shows that all the described outbreaks occur on the banks of rivers where there is mercury contamination from alluvium gold mining and deforestation. Pathophysiological evidence shows a similarity to pemphigus induced by sulphydryl (S...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2011.09.041
更新日期:2012-01-01 00:00:00
abstract::Melasma is an acquired disorder of pigmentation that presents with asymptomatic symmetric darkening of the face. The pathogenesis of this condition is multifactorial and influenced by several factors including female sex hormones, genetic predisposition and ultraviolet light exposure. The management of melasma is usua...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2017.01.020
更新日期:2017-04-01 00:00:00
abstract::The author reviews the criticism aimed at medical education and suggests that its shortcomings could be corrected by modifying the curriculum so that irrelevant material is eliminated and replaced in part with the humanities. ...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(80)90104-8
更新日期:1980-05-01 00:00:00
abstract::Ultrasound (US) is gaining recognition as a useful tool for assessing lung physiology and pathology. Yet, currently the skill of performing lung US is taught by experienced operators to novice ones, mainly by recognizing expected patterns. Recognizing the latter may be difficult and subjective. In this hypothesis we p...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2016.04.019
更新日期:2016-06-01 00:00:00
abstract::The biophysical processes during electroconvulsive therapy (ECT) are discussed. The multilayer head structure causes a shunting and spreading of the major portions of the current all over the extracranial tissues. The final effect is that only a small percentage of the injected current passes into the brain. The secon...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(94)90052-3
更新日期:1994-08-01 00:00:00
abstract::Most of the evidence of formation of amblyopia is derived traditionally from electrophysiological studies. Recently, there have been many discoveries from genetics, histopathology, biochemistry, immunology and interventional studies. On the basis of evidence gathered in the last five years, the various types of amblyo...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/s0306-9877(97)90275-9
更新日期:1997-02-01 00:00:00