Abstract：
:Keratoacanthomas have many characteristics of squamous cell carcinoma and in the past were interpreted as squamous cell carcinomas. It is now known that these lesions spontaneously resolve if left untreated. In man the lesions occur on sunlight damaged areas or areas exposed to tar. Many of the experimental cancers of animals produced by topical carcinogens are keratoacanthomas. Ultraviolet light and tar are known to damage fibroblast and ground substance viscosity. It has recently been proposed that anything that decreases ground substance viscosity would encourage the spread of tumors, by weakening tissue resistance. The rapidly growing keratoacanthoma produces invasive pressure and moves into deeper, less damaged dermis. An inflammatory reaction occurs in the depth of the lesion and a very characteristic granulocytic response occurs. Granulocytes release connective tissue active peptides which stimulate fibroblast and ground substance formation. The fibroblast proliferation is followed by fibrosis and the shrinking and disappearance of the tumor. The characteristic pustule that spurts granulocytes into the depth of the tumor has been experimentally blocked by hyaluronidase and other substances that damage ground substance viscosity. Edema is essential to produce this inflammatory reaction. However, this inflammatory phenomenon occurs vigorously in keratoacanthoma. It is proposed that a keratoacanthoma is a tumor that does not produce hyaluronidase or other substances that decrease ground substance viscosity. It is a deviant cell that can only move through areas of decreased ground substance viscosity. When it reaches tissues of normal viscosity edema and an inflammatory reaction occurs.(ABSTRACT TRUNCATED AT 250 WORDS)
journal_name
Med Hypothesesjournal_title
Medical hypothesesauthors
Stone OJdoi
10.1016/0306-9877(88)90063-1subject
Has Abstractpub_date
1988-06-01 00:00:00pages
113-7issue
2eissn
0306-9877issn
1532-2777pii
0306-9877(88)90063-1journal_volume
26pub_type
杂志文章abstract：:Erectile dysfunction after nerve injury is a common disease after radical prostatectomy. Brain-derived neurotrophic factor (BDNF) is a member of the neurotrophin family, which plays an important role in the survival of existing neurons, the differentiation of new neurons, and synaptic plasticity. It has been demonstra...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2018.10.014
更新日期：2019-01-01 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：:The three events, viz. schizophrenia, dissociative anaesthesia and Near-Death Experience, despite their seemingly unrelated manifestation to each other, have nevertheless similar functional basis. All three events are linked to the glutamate sensitive N-methyl-D-aspartate (NMDA) receptor complex, which serves as their...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/s0306-9877(03)00307-4
更新日期：2004-01-01 00:00:00
abstract：:Schizophrenia has a polygenic mode of inheritance and an estimated heritability of over 80%, but success in understanding its genetic underpinnings to date has been modest. Unlike in trinucleotide neurodegenerative disorders, the phenomenon of genetic anticipation observed in schizophrenia or bipolar disorder has not ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2011.03.051
更新日期：2011-08-01 00:00:00
abstract：:Given the reports made about dogs detecting cancer on the basis of odour, our hypothesis is that the volatile organic compounds produced by tumours, and detected by dogs, are products of MHC genes. Two lines of evidences support this hypothesis: (1) human body odour is genetically determined by MHC. These antigen mole...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2005.08.027
更新日期：2006-01-01 00:00:00
abstract：:Solutes concentration in the aqueous humor of the eye is highest near the ciliary processes in the posterior chamber (p.c.) and lowest near the trabecular meshwork in the anterior chamber (a.c.). The high osmotic gradient across the semipermeable iris causes it to easily move forward at this location and occasionally ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/s0306-9877(02)00338-9
更新日期：2003-03-01 00:00:00
abstract：:Stressful events occur in the lives of millions of individuals each year. Such events, or "stressors", are experiences that threaten personal well-being, and include traumatic events such as motor vehicle collision, infectious illness, and situations such as military deployment. While most individuals recover from suc...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2004.03.022
更新日期：2004-01-01 00:00:00
abstract：:Trypanosomiasis is common in Africa and South America. The surface of trypanosomes is covered by glycosyl phosphatidylinositol (GPI)-anchored variant surface glycoprotein (VSG) that contains the fatty acid myristate (14:0) as its lipid moiety that is essential for its survival. Myristic acid, being a saturated fatty a...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2009.11.002
更新日期：2010-04-01 00:00:00
abstract：:Human papillomavirus (HPV) type 16 is causally associated with a subset of oral cancers, predominantly those cancers arising in the oropharynx (OP). Increased HPV16 E6 and E7 oncogene expressions are responsible for the malignant transmission in these cancers. ErbB-2 is the family member most closely implicated in hum...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2004.03.013
更新日期：2004-01-01 00:00:00
abstract：:The cumulative incidence of uterine leiomyoma at age 50 is ≈ 70% in White women and >80% in Black women. Although risk factor research is limited, increasing age, and being premenopausal, nulliparous or Black are risk factors for leiomyomas. Black women tend to have larger leiomyomas and be younger at diagnosis. Surpr...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2012.04.046
更新日期：2012-08-01 00:00:00
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journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2019.109479
更新日期：2020-03-01 00:00:00
abstract：:This hypothesis named Salerian Addictive Potential (SAP) suggests that the addictive potency of any substance may be calculated with an algebraic equation of A=E/T(max)xt(1/2), where A is the addictive potency, E represents the euphoric potency, T(max) is the time to reach peak plasma concentration, and t(1/2) is the ...
journal_title：Medical hypotheses
pub_type： 杂志文章,评审
doi：10.1016/j.mehy.2010.01.008
更新日期：2010-06-01 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
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journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1054/mehy.1999.0029
更新日期：2000-02-01 00:00:00
abstract：:Fibromyalgia syndrome (FMS) is a chronic widespread pain syndrome that is estimated to affect 4-8 million US adults. The exact molecular mechanisms underlying this illness remain unclear, rendering most clinical treatment and management techniques relatively ineffective. It is now known that abnormalities in both noci...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2009.01.052
更新日期：2009-08-01 00:00:00
abstract：:In early synovitides the tissue inflammatory cell reaction is often weak and sometimes absent, many alterations being consistent with nonvasculitic exudation (I). Increased permeability to protein may require little, if any, endothelial damage. In rheumatoid arthritis (RA) increased transfer of fluid and protein from ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(82)90063-9
更新日期：1982-07-01 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：:The adaptive value of sleep remains unknown in spite of the intense research performed throughout the last decades. However, few sleep researchers are aware of the difficulties posed by the blind acceptance of an extreme adaptationist viewpoint. Under this philosophy, every anatomical and functional detail present in ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2004.05.007
更新日期：2005-01-01 00:00:00
abstract：:This article reviews the biochemical and physiological observations underpinning the synergism between ghrelin and ghrelin agonists with exercise, especially progressive resistance training that has been shown to increase muscle mass. The synergy of ghrelin agonists and physical exercise could be beneficial in conditi...
journal_title：Medical hypotheses
pub_type： 杂志文章,评审
doi：10.1016/j.mehy.2015.09.008
更新日期：2015-12-01 00:00:00
abstract：:Currently, drug repurposing is an alternative to novel drug development for the treatment of COVID-19 patients. The antimalarial drug chloroquine (CQ) and its metabolite hydroxychloroquine (HCQ) are currently being tested in several clinical studies as potential candidates to limit SARS-CoV-2-mediated morbidity and mo...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2020.109815
更新日期：2020-09-01 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：:In attempts to develop a rational anticancer strategy the same homologous tissue in 3 conditions were used side by side as targets: normal epidermis of the mouse back. Tween 60R-provoked benign epidermal hyperplasia, and carcinogen-provoked malignant condition. In contrast to the highest tolerated doses of the cytosta...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(82)90116-5
更新日期：1982-03-01 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：: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：:Neuroleptic-induced tardive dyskinesia represents a major serious side-effect of chronic therapy with neuroleptic drugs. The pathomechanisms underlying this disorder are not well understood. Although the dopaminergic supersensitivity theory has gained most attention, there is evidence to suggest involvement of other t...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(86)90138-6
更新日期：1986-01-01 00:00:00
abstract：:Prepulse inhibition (PPI) of acoustic startle reflex is a measure of sensorimotor gating that may reflect the biological processes underlying gaiting impairments in schizophrenia. Although PPI is clinically useful, why PPI is inhibited in schizophrenia is largely unknown. Prepulse inhibition is mediated by M2-like mus...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2020.109901
更新日期：2020-10-01 00:00:00
abstract：:The rise of anatomical realism in sculpture with the Classical Greeks puzzles art historians. Recently, it has been discovered that the motor cortex perceives motor actions. I argue that Classical artists discovered a new aesthetic based on using art to stimulate not just, as previously, the visual cortex, but also th...
journal_title：Medical hypotheses
pub_type： 历史文章,杂志文章
doi：10.1016/s0306-9877(98)90257-2
更新日期：1998-07-01 00:00:00
abstract：:The globally increasing incidences of Type 1 diabetes (T1DM) and Type 2 diabetes (T2DM) can have a common background. If challenged by the contemporary high level of nutritional glucose stimulation, the β-cells in genetically predisposed individuals are at risk for damage which can lead to the diseases. The fat to car...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2019.02.027
更新日期：2019-04-01 00:00:00
abstract：:For diagnosis of Human Immunodeficiency Virus (HIV) infection by the recently developed Polymerase Chain Reaction (PCR), the two commonly used clinical samples are either the peripheral blood monocytes (PBMC) or the plasma of the infected individuals. In the former instance, DNA is extracted from PBMC. The integrated ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(93)90188-v
更新日期：1993-01-01 00:00:00
abstract：:Avascular necrosis of the femoral head (ANFH) is a common ailment characterized by necrosis of bone trabecular and bone marrow. It's mainly caused by the destruction of the blood supply in the femoral head and high rate of morbidity and disability is involved. Many methods have been tried including conservative treatm...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2010.09.028
更新日期：2011-02-01 00:00:00
