Abstract：
:The assumption is introduced that there are two types of adaptive responses in central neurons in response to significantly changed circuit activity. Morphological synaptic modifications and synapse turnover are thought to be involved in both of these responses, in such a way that in the first case they are to restore the circuit activity level as it was in the past, and in the second case they are to switch it to a new pattern. The events eliciting synaptogenesis are proposed to be different in these instances. The role of compensatory extrasynaptic receptors insertion and preferential insertion of synaptic receptors induced by enhanced presynaptic activity are discussed. The hypothesis as to how these two adaptive responses come into action during depression and antidepressant treatment is then proposed.
journal_name
Med Hypothesesjournal_title
Medical hypothesesauthors
Benusková Ldoi
10.1016/0306-9877(91)90077-ckeywords:
subject
Has Abstractpub_date
1991-05-01 00:00:00pages
17-22issue
1eissn
0306-9877issn
1532-2777pii
0306-9877(91)90077-Cjournal_volume
35pub_type
杂志文章abstract：:Historically, cluster reports have been considered to be only marginally productive and generally discouraged as statistical artifacts. This report presents the results of a three year study involving in excess of 100 cancer cluster reports. The majority of these investigations represented statistical events; there we...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(83)90031-2
更新日期：1983-09-01 00:00:00
abstract：:N-acetylaspartate (NAA) is an intermediary metabolite that is found in relatively high concentrations in the human brain. More specifically, NAA is so concentrated in the neurons that it generates one of the most visible peaks in nuclear magnetic resonance (NMR) spectra, thus allowing NAA to serve as "a neuronal marke...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2006.02.047
更新日期：2006-01-01 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：:The universal 24-hour circadian clock has a profound impact on many daily biological processes. Disturbance of circadian rhythms has been implicated in the etiologies of many chronic illnesses, including cancer; with correlations most profoundly found among hormone-related breast and prostate cancers. Given the fact t...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2007.07.040
更新日期：2008-01-01 00:00:00
abstract：:Oxidative stress-mediated neurodegeneration is responsible for 12% mortality around the globe. Alzheimer's Disease (AD) and Parkinson's Disease (PD) are the most prevalent neurodegenerative diseases, associated with modulation of acetylcholine levels and amyloid beta accumulation & dopamine level and alpha-synuclein o...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2020.109872
更新日期：2020-10-01 00:00:00
abstract：:The possibility of a pathway, common to progression, in entities in which activated macrophages or microglia are present, amenable to particular therapies, is discussed. Immunoglobulin synthesis and activation of the complement pathway may be critical elements in progression. It is possible progression in a proportion...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2006.06.001
更新日期：2006-01-01 00:00:00
abstract：:The assessment of nature and the extent of extraocular muscle injuries during initial visit in ocular emergencies is of paramount importance to avoid/minimize the subsequent need for strabismus surgery. Based on our experience in managing acute globe and orbital injuries and cases of strabismus, we propose the probabl...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2019.01.011
更新日期：2019-02-01 00:00:00
abstract：:Recent findings indicate a principal role for Hepcidin in iron homeostasis. Hepcidin is also thought to play a vital role in the pathogenic mechanism of anaemia in patients with inflammation or chronic disease. Under normal conditions influx and efflux of iron from duodenal enterocytes is regulated by Ferroportin. Fer...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2007.10.007
更新日期：2008-01-01 00:00:00
abstract：:Being born in the winter and spring significantly increases one's risk for developing schizophrenia. This birth seasonality may account for as many as 10% of all cases of schizophrenia. Maternal third trimester infections or vitamin D deficiencies are hypothesized to be the most likely cause and can account for many o...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2011.02.019
更新日期：2011-06-01 00:00:00
abstract：:Insulin resistance has been associated with people diagnosed with depression. Conversely, it has also been documented that diabetics have an increased risk of depression. Evidence suggests that insulin activity plays a role in serotonergic activity by increasing the influx of tryptophan into the brain. This increased ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1054/mehy.2000.1103
更新日期：2000-12-01 00:00:00
abstract：:Chronic adult periodontitis (CAP) is a common disease of the supporting tissues of teeth, and is a major cause of tooth loss. This disease is distinguished from more rare rapidly progressing forms of periodontitis, in which a variety of neutrophilic polymorphonuclear leukocyte (PMN) defects have been identified. PMN d...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(91)90008-m
更新日期：1991-12-01 00:00:00
abstract：:Dependence on benzodiazepines (BZDs) or Z-drugs (zolpidem, zopicline and zaleplon) is a common clinical phenomenon. Traditional detoxification of BZDs dependence includes tapering used dose gradually and using equivalent doses of long-acting BZDs as substitutes. This kind of regimen tends to take a long time (up to 4w...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2014.03.032
更新日期：2014-07-01 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：: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：:Interferon-alpha (IFN) is widely used in the treatment of certain cancers and viral infections, including hepatitis C (HCV). Unfortunately, depression is a common side effect of IFN therapy, affecting approximately a third of HCV patients receiving IFN therapy. Studies have shown that selective serotonin reuptake inhi...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2005.01.026
更新日期：2005-01-01 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：:Coronavirus Disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) represents the largest current health challenge for the society. At the moment, the therapeutic strategies to deal with this disease are only supportive. It is well known that zinc (Zn) possesses a variety of dir...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2020.109848
更新日期：2020-11-01 00:00:00
abstract：:Pseudohypoaldosteronism Type I may occur due to several different causes. The authors recommend distinguishing between effector and receptor disorders with regard to the diverse mode of inheritance and prognosis. ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(93)90247-n
更新日期：1993-09-01 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：:High fat and low carbohydrate diet, designated ketogenic diet, has been successfully used for the treatment of intractable epilepsy in a portion of patients, particularly in children. Several hypotheses have been worked out for the explanation of its beneficial effects, among others acetone has been raised as a causat...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2006.10.041
更新日期：2007-01-01 00:00:00
abstract：:Both epidemiological and experimental studies have shown that impaired growth in utero due to maternal malnutrition, resulting in low birth weight, is associated with a high incidence of glucose intolerance, insulin resistance, and type 2 diabetes in adult life. Maternal malnutrition is a worldwide problem and unavoid...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2005.12.024
更新日期：2006-01-01 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：:Cancer is the second cause of death worldwide, but current therapies are often insufficient or linked with toxicity. Initial evidence in scientific literature seems to support the role of non-pharmacological strategies, including hypoglycemia, in cancer treatment. The biological rationale for hypoglycemia-based treatm...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2019.109276
更新日期：2019-09-01 00:00:00
abstract：:Supercritical carbon dioxide (CO(2)) possesses germicide (bactericide and sporicide) effect. Despite of the fact, that this effect is used in industrial sterilization processes, the sterilization mechanism at molecular level is unclear. Our hypotheses can provide a molecular-biological explanation for the phenomenon. ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2009.08.043
更新日期：2010-02-01 00:00:00
abstract：:The various neurotransmitter systems postulated to be involved in the pathogenesis of Gilles de la Tourette syndrome(GTS) are described with special reference to the endogenous opioid system(EOS). Malfunction of the opioid system is proposed as the underlying disturbance in this disease causing secondary dysfunction o...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(86)90112-x
更新日期：1986-04-01 00:00:00
abstract：:Non-union after bone fracture is rather common with an increasing frequency of incidence rate due to poorly treated early operations, among which the mechanism of atrophic non-union remains unclear. Previous opinions showed that impaired blood supply of affected limbs might mostly contribute to the atrophic non-union,...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2011.03.027
更新日期：2011-07-01 00:00:00
abstract：:Focal segmental glomerulosclerosis (FSGS) is a common cause of nephrotic disease in adults, and it is thought to be increasing in incidence. FSGS is often difficult to treat and even has a high propensity to relapse after transplant. Indeed, this suggests that there might be some circulating factor responsible for pro...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1054/mehy.2001.1438
更新日期：2001-12-01 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：:Ample intakes of fruit and vegetables have been linked epidemiologically with reduced risk for coronary disease, stroke, hypertension, obesity, many types of cancer, chronic pulmonary disease, osteoporosis, and various ocular disorders. The favorable impact of diets rich in fruit and vegetables on coronary risk has be...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2005.09.058
更新日期：2008-01-01 00:00:00
abstract：:Hypoplastic pineal glands and decreased melatonin levels are found in sudden infant death syndrome. Excess oxygen radical production and inadequate radical quenching is suggested to cause oxidative stress in the brain of sudden infant death syndrome victims. Loss of intraventricular cerebrospinal fluid melatonin could...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/s0306-9877(97)90091-8
更新日期：1997-11-01 00:00:00
