Abstract:
:Aspirin, today, is an established drug in the regime for the prevention of myocardial infarction, especially in high-risk groups. This use of aspirin has given it a new lease of life in its tenth decade of clinical use. Aspirin is probably the oldest synthetic drug in the Pharmacopoeias today; thus one would have imagined that understanding about the drug would have reached a zenith and if not, that at least there should be certainty about its mechanism of action. Most workers agree that aspirin inhibits the cyclo-oxygenase enzyme in the platelets leading to reduced formation of prostaglandin G2, the precursor of thromboxanes. This explanation does not appear to be complete, since the role of the platelet activating factor (PAF) seems to have been ignored. The precursor for PAF is the lysophospholipid that is almost always formed when membrane phospholipid breakdown takes place. Any effective antiplatelet drug would have to inhibit the formation and/or the action of PAF, if it were to prevent platelet aggregation. Alternatively, the pathophysiological role attributed to PAF is highly exaggerated and needs to be reassessed.
journal_name
Med Hypothesesjournal_title
Medical hypothesesauthors
Ghooi RB,Thatte SM,Joshi PSdoi
10.1016/0306-9877(95)90073-xsubject
Has Abstractpub_date
1995-02-01 00:00:00pages
77-80issue
2eissn
0306-9877issn
1532-2777pii
0306-9877(95)90073-Xjournal_volume
44pub_type
杂志文章abstract::Chronic viral liver disease may evolve to cirrhosis. The medical treatment to slow down this passage is based on anti-viral and anti-fibrotic properties of interferon. Recently, we evidenced significant increase of portal vein flow velocity and volume after a prostacyclin analog (iloprost) infusion in subjects without...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2004.05.017
更新日期:2005-01-01 00:00:00
abstract::Recent evidence suggests that covalent modifications to the genomic platform in the brain, that is DNA and its surrounding histones, provide a stable potentially lifelong mechanism for remembrance. Consequently, the making and unmaking of memories is accessible through pharmacological manipulations of these modificati...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2011.03.042
更新日期:2011-07-01 00:00:00
abstract::Patients with chronic kidney disease (CKD) experience co-morbid illnesses, including cardiovascular disease and retinopathy. Sevelamer hydrochloride (Renagel®); a non-calcium phosphate binder reduces coronary artery and aortic calcification as compared to calcium containing phosphate binders and additionally effects i...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2012.12.035
更新日期:2013-04-01 00:00:00
abstract::Fibromyalgia (FM) is a debilitating, widespread pain disorder that is assumed to originate from inappropriate pain processing in the central nervous system. Psychological and behavioral factors are both believed to underlie the pathogenesis and complicate the treatment. This hypothesis, however, has not yet been suffi...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2017.12.006
更新日期:2018-01-01 00:00:00
abstract::Evidence exists for the presence of a neuro-anatomy that can produce cardiac vasospasm. Recent experimental and clinical data suggest that this neuro-anatomic mechanism can be activated by behavioral events in the psycho-social surround of the patient with coronary artery disease. I hypothesize that this mechanism can...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(87)90214-3
更新日期:1987-12-01 00:00:00
abstract::Condylar cartilage is absolutely necessary for the normal function of temporomandibular joint (TMJ). Unfortunately, condylar cartilage defect or missing is also one of the common clinical problems. Repair or reconstruction of cartilage is always a hot topic. Cell based cartilage regeneration is suggested as novel ther...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2011.03.045
更新日期:2011-07-01 00:00:00
abstract::Increased chemotactic activity of peripheral polymorphonuclear (PMN) cells has been described in disease states of different etiology and may represent a common pathway in the generation of an inflammatory reaction. The suppressive effect of colchicine on PMN chemotaxis may explain its effect in apparently unrelated d...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(81)90017-7
更新日期:1981-01-01 00:00:00
abstract::Acute carbon monoxide (CO) poisoning causes the neurologic symptoms and brain lesions during both acute and delayed phase. We propose that catecholamine crises in globus pallidus and deep white matter are the key pathophysiological factors causing acute and delayed brain injuries respectively. Increased sympathetic ac...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2014.04.032
更新日期:2014-08-01 00:00:00
abstract::From biographical data sources on ranking scientists, I was able to identify 35 centenarians. Among these, only one (Michel Chevereul from France) lived before the 20th century. Since the remaining 34 individuals became centenarians only from 1965, I propose that centenarian scientists are an unusual cluster, first fo...
journal_title:Medical hypotheses
pub_type: 历史文章,杂志文章
doi:10.1054/mehy.2001.1480
更新日期:2001-12-01 00:00:00
abstract::Many clinical trials have clearly demonstrated the benefit of statins in the prevention of coronary heart disease. Although other effects have subsequently been described, the so-called pleiotropic effects of statins, there is a tendency to relate all those effects, more or less directly, to inhibition of 3-hydroxy-3-...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2006.02.046
更新日期:2006-01-01 00:00:00
abstract::Juvenile nasopharyngeal angiofibroma (JNA) is the most common benign tumor of the nasopharynx. For reasons unknown, this tumor is found almost always in male population. However, site of origin of JNA is still an enigma. Previously, JNA was considered to arise from the superior aspect of sphenopalatine foramen. Over l...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2020.110300
更新日期:2020-11-01 00:00:00
abstract::Sudden infant death syndrome (SIDS) is frequently associated with a mild infection, the incidence peaking during the third month of life. We hypothesize that the neonatal immaturity of both the acute febrile response and hypothalamus promote neonatal protection from SIDS. Vagal afferents modify the febrile response. V...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1054/mehy.1997.0695
更新日期:1999-06-01 00:00:00
abstract::The etiology of Autism Spectrum Disorders (ASDs) continues to be elusive. While ASDs have been shown to be heritable, several environmental co-factors, such as, e.g. pre- or perinatal adverse events, could play a role in the pathogenesis of the disorder as well. Prevalence of ASDs appears to have increased in the last...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2014.03.011
更新日期:2014-06-01 00:00:00
abstract::Reflux of biliary secretions into the pancreatic duct following gallstone obstruction of the common biliary pancreatic ampulla has been implicated as a cause of acute pancreatitis. However, the pancreatic duct pressure is higher than the biliary pressure and, therefore, the simple obstruction of the choledochoduodenal...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1054/mehy.1998.0896
更新日期:2000-04-01 00:00:00
abstract::As known, gamma-interferon-induced cell death in HeLa cells can be mediated via the recently identified protein kinase, death associated protein (DAP) kinase which is localized to the microfilament system of the cytoskeleton. However, the downstream or upstream effectors of DAP kinase remain uncertain. In the present ...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1054/mehy.1999.0967
更新日期:2000-05-01 00:00:00
abstract::Oral administration of L-arginine in pharmacological doses induces growth hormone and insulin-like growth factor-I responses and stimulates nitric oxide synthesis. Growth hormone and insulin-like growth factor-I are important mediators of bone turnover and osteoblastic bone formation, while nitric oxide is a potent in...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(94)90113-9
更新日期:1994-11-01 00:00:00
abstract::In this review, tumor necrosis factor-alpha (TNF-alpha) is identified as the uniting principle linking the pathogenesis of insulin-dependent diabetes mellitus (IDDM), non-insulin dependent diabetes mellitus (NIDDM) and carcinoma. Elevated TNF-alpha initially increases, and then inhibits, the activity of a number of ke...
journal_title:Medical hypotheses
pub_type: 杂志文章,评审
doi:10.1054/mehy.1997.0008
更新日期:1999-04-01 00:00:00
abstract::Carcinoma constitution originates in the hetero-duplication mitoses (4) which divide non-maturable stem cells into two different types of daughter cells: maturable and non-maturable cancerous stem cells. Throughout the progression of such mitoses, the organoid continuity of the cancer depends only on the non-maturable...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1054/mehy.1995.0677
更新日期:1999-06-01 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::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::Many embryonic genes may be sets of repeated genes. Processes of differentiation where the quantity of gene activity changes during embryogenesis may not reflect the transcription rate per se but instead be a result of the state of expression of constitutive repeated genes. Such repeated genes (in fact or theory) is d...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(91)90220-s
更新日期:1991-03-01 00:00:00
abstract::Educational expansion in western countries has been achieved mainly by adding years to full-time education; however, this process has probably reduced efficiency. Sooner or later, efficiency must improve, with a greater educational attainment per year. Future societies will probably wish more people to study science t...
journal_title:Medical hypotheses
pub_type: 社论
doi:10.1016/j.mehy.2006.02.011
更新日期:2006-01-01 00:00:00
abstract::The menstrual cycle appears to have evolved in humans and some other species to improve reproductive efficiency by enabling progesterone production without the presence of the fetus. This phenomenon is termed spontaneous decidualization. Repeated menstruation is produced in modern women because of better general healt...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2020.109955
更新日期:2020-11-01 00:00:00
abstract:BACKGROUND:Eelier studies demonstrated the up-regulation of some transcriptional factors such as Oct4, Nanog, Sox2 in undifferentiated cancer cells. These transcriptional regulators are up-regulated in pluripotent cells, as well and are responsible for cell reprogramming in normal cells. It might be said that normal ce...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2014.09.014
更新日期:2014-12-01 00:00:00
abstract::Fissured tongue (FT) is a condition frequently seen in the general population. Clinically, FT is characterized by grooves that vary in depth and are noted along the dorsal and/or dorsolateral aspects of the tongue. Furthermore, FT presents many enlarged, smooth filiform papillae and subepithelial inflammatory infiltra...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2014.03.010
更新日期:2014-06-01 00:00:00
abstract::Posterior capsule opacification (PCO) is a debilitating and relatively common complication of cataract surgery despite modern medical and surgical advances. The pathophysiology of this condition has largely been attributed to peptide mediators, such as transforming growth factor-beta (TGFβ), epidermal growth factor (E...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2012.12.042
更新日期:2013-04-01 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::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::Jet lag is a travel-induced circadian rhythm phenomenon that afflicts healthy individuals following long- distance flights through several time zones. The typical jet-lag manifestations - insomnia during local sleep time, day fatigue, reduced concentration, irritability, and exhaustion with mild depression - are attri...
journal_title:Medical hypotheses
pub_type: 杂志文章,评审
doi:10.1054/mehy.2000.1094
更新日期:2001-01-01 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