Abstract:
:An immune modulation complex is proposed which recognizes and is driven by an MHC presented epitope of the CD4 molecule present on the surface of up regulated CD4+ lymphocytes. Immune modulation is affected by both CD4 lymphocyte destruction and impairment of their potential for immune recognition. These two processes are carefully controlled by an idiotypic, anti-idiotypic feedback mechanism. The CD4 tropic area of HIV impersonates some components of that feedback loop resulting in increased CD4 lymphocyte destruction.
journal_name
Med Hypothesesjournal_title
Medical hypothesesauthors
Kennedy JRdoi
10.1016/0306-9877(93)90123-8subject
Has Abstractpub_date
1993-11-01 00:00:00pages
445-9issue
5eissn
0306-9877issn
1532-2777pii
0306-9877(93)90123-8journal_volume
41pub_type
杂志文章abstract::Focal epilepsy secondary esp to scar or injured cortical tissue forms a source of constant depolarisation site with or without emitting negative charges (current of injury) into the surrounding area. This focal site is localised by EEG, MRI and if required, by PET and/or SPECT studies. The author postulates to implant...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/s0306-9877(02)00266-9
更新日期:2002-11-01 00:00:00
abstract::Invasive carcinoma originates from the epithelial cells lining the lumen of an organ. It is often preceded by metaplasia, dysplasia or carcinoma in situ. The purpose of this review is to suggest that this disease of the epithelium may be, in part, the result of underlying tissue-based disorganization. Human cancer is ...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1054/mehy.2001.1539
更新日期:2002-04-01 00:00:00
abstract::The paper based on the hypothesis that mechanical impulses cause the transmission of excitement in the peripheral and central nervous system. Possible connections between changes in the tubular neuronal network and the morphological findings of Alzheimer's disease are presented. Additionally, changes in the viscosity ...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2014.02.012
更新日期:2014-05-01 00:00:00
abstract::Autism may be a disorder linked to the disruption of the G-alpha protein, affecting retinoid receptors in the brain. A study of 60 autistic children suggests that autism may be caused by inserting a G-alpha protein defect, the pertussis toxin found in the DPT vaccine, into genetically at-risk children. This toxin sepa...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1054/mehy.1999.0999
更新日期:2000-06-01 00:00:00
abstract::The etiology of focal distribution of atherosclerotic lesions has received much attention for many years. Current theories focus on mechanical factors such as low endothelial shear stress as an initiating factor for atherosclerosis formation. However, some evidences revealed that it could not be initiator of endotheli...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2008.11.049
更新日期:2009-12-01 00:00:00
abstract::Plasticity of adult cells has been identified in several post-natal tissues in the past few years and has attracted special attention in regenerative medicine. Skin is the biggest organ in the body. Adult skin consists of epidermis, dermis and appendages such as hairs and glands which are linked to the epidermis but p...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2003.12.022
更新日期:2004-01-01 00:00:00
abstract::The amino acid threonine contains two chiral carbons and thus can exist in four possible conformations. However, only a single conformation (2S, 3R) of threonine is incorporated in proteins by the cellular translation material. The conformation at the alpha carbon (carbon 2) is the same as that of the other amino acid...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1054/mehy.2000.1231
更新日期:2001-04-01 00:00:00
abstract::There are large amounts of zinc in muscle and zinc ions can enhance the degree of muscle contraction in response to direct stimulation while at the same time inhibiting neuromuscular transmission. The opposites of these effects would lead to myotonia and muscle weakness. There are many parallels between the non-muscul...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(80)90052-3
更新日期:1980-04-01 00:00:00
abstract::A meniscal graft extrusion is still an unresolved problem that affects most patients after a meniscal transplantation. Despite the advances in surgical techniques, together with the improved methods for a meniscal allograft sizing, success is only observed in up to 75% of patients after they experience a meniscal allo...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2017.02.003
更新日期:2017-04-01 00:00:00
abstract::Genetic and environmental influences are both known to be causal factors in the development and maintenance of obesity. Stress related chronic stimulation of the hypothalamic-pituitary-adrenal (HPA) axis and resulting increased glucocorticoid exposure are known to be important pathophysiological mechanisms in the deve...
journal_title:Medical hypotheses
pub_type: 杂志文章,评审
doi:10.1016/j.mehy.2010.10.049
更新日期:2011-03-01 00:00:00
abstract::Delayed healing and nonunions of bone fracture are critical problems in orthopedic surgery. Electrical stimulation has been used as a therapeutic method for enhancing bone healing for a long time. Despite unanimous clinical success, the underlying mechanism concerning bone tissue in response to electrical stimulation ...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2007.05.044
更新日期:2008-01-01 00:00:00
abstract::Multiple sclerosis (MS) is a neurodegenerative disease of uncertain etiology. In MS, neurodegeneration is thought to be secondary to autoimmune-mediated damage. However, no cohesive explanation yet exists as to how environmental factors interact to induce a neurodegenerative autoimmune response. Insufficient sunlight ...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2008.01.031
更新日期:2008-01-01 00:00:00
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...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(91)90077-c
更新日期:1991-05-01 00:00:00
abstract::Geographic patterns with diminishing rates from north to south toward the equator have been described for a number of diseases, putatively related largely to "western" lifestyle. Among these the inflammatory bowel diseases; Crohn's (CD) and Ulcerative colitis (UC) have been prominent in sharing distributions with a nu...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2016.10.001
更新日期:2016-11-01 00:00:00
abstract::Obesity is a major public health problem, which occurs in epidemic proportions. Our understanding of the systems of the brain related to energy balance has increased over the last decade. As a result, drugs most commonly used today in the management of obesity have their primary effect in modulating the balance betwee...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2003.12.030
更新日期:2004-01-01 00:00:00
abstract::Studies have reported an increasing incidence of thyroid cancer worldwide. The reasons are likely related to improved imaging modalities, altered histopathologic criteria for diagnosis of thyroid cancer, and nuclear exposure. However, the classical assumption derived from epidemiological studies is that it should be q...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2009.08.021
更新日期:2010-01-01 00:00:00
abstract::To explain why subjects vary in body fat content despite similar nutrient intake and physical activity, a hypothesis is proposed invoking individual variability in the potentially vast quantities of energy utilizable for such biomechanical functions as cellular motility processes, and for protein mobility. The collect...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(87)90175-7
更新日期:1987-05-01 00:00:00
abstract::Treatment-resistant schizophrenia (TRS) is one of the subgroups of schizophrenia of which little is known with regard to its optimal mechanism. Treatment response, either as full remission of symptoms or prediction by biomarker, is important in psychiatry. We have proposed a model that integrates dopaminergic and glut...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2020.110159
更新日期:2020-10-01 00:00:00
abstract::Trigeminal neuralgia is a painful condition that causes great discomfort. Although this disease has been known for more than 1000years, there is still no consensus on its underlying mechanism or treatment. Many hypotheses have been reported to explain the cause and nature of trigeminal neuralgia. These include theorie...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2017.01.008
更新日期:2017-03-01 00:00:00
abstract::This paper outlines a method of demonstrating hepatitis B virus (HBV)-related transcriptional activity based on the random amplification of cDNA ends (RACE) protocol. Following RNA extraction from the appropriate tissue, cDNA is synthesized using a long oligo d(T) based primer containing unique 5' oligonucleotide sequ...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(95)90056-x
更新日期:1995-08-01 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::Positive cancer patient outcomes, including increased time to recurrent events, have been associated with increased counts and function of natural killer (NK) cells. NK cell counts and function are elevated following acute exercise, and the generally accepted mechanism of increased recruitment suggests that binding of...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2017.10.015
更新日期:2017-11-01 00:00:00
abstract::Stroke is a major cause of neurological disability across all countries in the world. Functional recovery after stroke is limited because of neuronal death and degeneration. Although early reperfusion therapy may improve outcome, thrombolysis does not reverse ischaemic neuronal death and carries the risk of cerebral h...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2007.01.091
更新日期:2007-01-01 00:00:00
abstract::Dyslipidemia is a common pathology throughout the industrialized world, and HMG-CoA reductase inhibitors (statins) are often administered to treat elevated lipid levels. Substantial concern has been raised regarding the aggressive clinical lowering of cholesterol, particularly in light of a growing body of research li...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2016.10.018
更新日期:2016-12-01 00:00:00
abstract::It is proposed that there is biological regulation of the low molecular weight antioxidant (LMWA) status of the body, and that these different antioxidants work in concert and in homeostasis as a system analogous to the regulation of acid-base status (pH). The theoretical design characteristics for such a system inclu...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1054/mehy.1998.0786
更新日期:1999-11-01 00:00:00
abstract::The etiology of intra-abdominal adhesions is explained by hydrolysis of the peritoneal phospholipid layer caused by phospholipase A2 activity. This view could unify the pre-existing hypotheses that intra-abdominal adhesions are due to ischemia or increased plasminogen activator activity. New therapeutic approaches are...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(93)90109-4
更新日期:1993-12-01 00:00:00
abstract::We propose that in any acid-base disturbance there is a predictable mathematical relationship between the changes in the individual serum anionic concentrations of chloride, bicarbonate and the unmeasured anion gap. Two indices were developed, from the ratios of the changes in these anionic concentrations, that are us...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(89)90063-7
更新日期:1989-11-01 00:00:00
abstract::Trigeminal neuralgia (TN) is a rare form of neuropathic pain that results in sudden, unilateral and recurrent pains in the distribution of one or more branches of the trigeminal nerve. The aetiology of TN remains unclear and several theories have been proposed. Many medical and surgical methods have been applied with ...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2013.10.010
更新日期:2013-12-01 00:00:00
abstract::Schmorl's nodes (SNs) are common abnormalities in the human spine, which represent herniation of the nucleus pulposus of the intervertebral disc into the adjacent cartilaginous endplate of the vertebra. However, the principle mechanism of SNs is still not fully understood. And the relationship of SNs in the spine and ...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2009.09.044
更新日期:2010-03-01 00:00:00
abstract::Stress, in its many forms, is long associated with the etiology and course of schizophrenia. The mechanisms mediating the impacts of stress are not fully elucidated. Here it is proposed that stress induced cortisol alters kynurenic acid (KA) and quinolinic acid (QA) in the cortex and amygdala/striatum, respectively. T...
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