A factor in the increased risk of colorectal cancer due to ingestion of animal fat is inhibition of colon epithelial cell glutathione S-transferase, an enzyme that detoxifies mutagens.

abstract：:This hypothesized reflex relates the vertical direction of gaze to the amount of tension exerted by the ciliary muscle. Based on simple observations the following is assumed. When looking downwards a tendency for closer focusing (near searching) exists even without a specific visual stimulus, whereas looking up favors...

journal_title：Medical hypotheses

authors： Blumenthal EZ

更新日期：1991-12-01 00:00:00

abstract：:In this work we propose a simple mathematical model for the analysis of the impact of control measures against an emerging infection, namely, the severe acute respiratory syndrome (SARS). The model provides a testable hypothesis by considering a dynamical equation for the contact parameter, which drops exponentially w...

journal_title：Medical hypotheses

authors： Massad E,Burattini MN,Lopez LF,Coutinho FA

更新日期：2005-01-01 00:00:00

abstract：:We tested the hypothesis that if SPECT/CT-detected volumes of active and inactive parts of brain tissue present correlation with the results of hyperbaric oxygen therapy (HBOT) of ischemic stroke, SPECT imaging may serve as a selective tool for post-stroke patients to indicate cases that may significantly benefit from...

journal_title：Medical hypotheses

authors： Golan H,Makogon B,Volkov O,Smolyakov Y,Hadanny A,Efrati S

更新日期：2020-03-01 00:00:00

abstract：:Cocaine is one of the principal drugs of abuse. Although impressive advances have been made, unanswered questions remain concerning mechanism of toxicity and addiction. Discussion of action mode usually centers on receptor binding and enzyme inhibition, with limited attention to events at the molecular level. This rev...

journal_title：Medical hypotheses

authors： Kovacic P

更新日期：2005-01-01 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

authors： Salerian AJ

更新日期：2010-06-01 00:00:00

abstract：:Dietary chromium supplementation for the treatment of diabetes remains controversial. The prevailing view that chromium supplementation for glucose regulation is unjustified has been based upon prior studies showing mixed, modest-sized effects in patients with type 2 diabetes (T2DM). Based on chromium's potential to i...

journal_title：Medical hypotheses

authors： Brownley KA,Boettiger CA,Young L,Cefalu WT

更新日期：2015-07-01 00:00:00

abstract：:On March 11, 2020, the World Health Organization declared the coronavirus outbreak a pandemic. Since December 2019, the world has experienced an outbreak of coronavirus disease 2019 (COVID-19). Epidemiology, risk factors, and clinical characteristics of patients with COVID-19 have been reported but the factors affecti...

journal_title：Medical hypotheses

authors： Taghizadeh-Hesary F,Akbari H

更新日期：2020-07-01 00:00:00

abstract：:Curvilinear distraction is currently under investigation to reconstruct curved maxillofacial bone defects. However, previous studies have revealed the discrepancy between the contour of the regenerated bone in the distraction gap and the curvilinear pathway of the transport disc. We hypothesize that the discrepancy is...

journal_title：Medical hypotheses

authors： Zhou L,Shang H,Feng Z,Liu C,Ye W,Ma Q,Wu W,Liu Y

更新日期：2012-10-01 00:00:00

abstract：:The mechanism of dermatomyositis/polymyositis (DM/PM) is unknown. There are multiple probable trigger mechanisms. Internal malignancy is a specific trigger for some cases of DM/PM. It is known that there are marked changes in the extracellular matrix around tumors and that various fractions of depolymerized glycosamin...

journal_title：Medical hypotheses

authors： Stone OJ

更新日期：1993-07-01 00:00:00

abstract：:Diabetes is a metabolic condition associated with hyperglycemia manifested by the elevation of blood glucose levels occurring when the pancreas decreases or stops the production of insulin, in case of insulin resistance or both. The current literature supports that insulin resistance may be responsible for the memory ...

journal_title：Medical hypotheses

authors： Leão LL,Tangen G,Barca ML,Engedal K,Santos SHS,Machado FSM,de Paula AMB,Monteiro-Junior RS

更新日期：2020-06-01 00:00:00

abstract：:Vasopressin is now commonly used to control bleeding during surgery of the cervix. In larger intravenous doses, vasopressin can cause coronary artery vasoconstriction and increase systemic vascular resistance. Nicotine has a similar effect on the coronary circulation. The effects of combining both these drugs has not ...

journal_title：Medical hypotheses

authors： Groudine SB,Morley JN

更新日期：1996-07-01 00:00:00

abstract：:Synthetic ligands of the retinoid X receptor (RXR) have shown antidiabetic activity in mice, apparently owing to the fact that they stimulate the transcriptional activity of PPAR-gamma/RXR heterodimers, much like thiazolidinedione drugs. The chlorophyll metabolite phytanic acid has been shown to be a natural ligand fo...

journal_title：Medical hypotheses

authors： McCarty MF

更新日期：2001-02-01 00:00:00

abstract：:The paradigm of an immune system presumes that a system arose specifically to combat infection -- hence its name. This paradigm gained credibility with the discovery of antibodies and anamnestic immunity, even though these are relatively late arrivals in evolution. Another presumption has been that thymus-dependent T ...

journal_title：Medical hypotheses

authors： Cunliffe J

更新日期：1999-03-01 00:00:00

abstract：:By influencing fetal brain development pregnancy may be prolonged beyond term for an unknown time period. In late gestation the mother animal (host) is nephrectomized. The urine of the fetus (transplant) is guided to the outside so that the fetal kidneys excrete the host's urinary secretory substances and eventually h...

journal_title：Medical hypotheses

authors： Metka W

更新日期：1982-10-01 00:00:00

abstract：:Preliminary reports have demonstrated that anterior nucleus thalamus high-frequency electrical stimulation (ANT-HFS) is an effective treatment for patients who suffer from medically refractory epilepsy. However, its extensive application has been hampered by the high cost and the unpredictable outcome before the opera...

journal_title：Medical hypotheses

authors： Yan N,Chen N,Lu J,Wang Y,Wang W

更新日期：2013-09-01 00:00:00

abstract：:Transient period represents the time window between the exposure and response to the given stimuli inflicting the stress on the host. However, this time window is unlikely to engage in variety of signaling to culminate drastic impact on the host cell rather it is evolutionary in its sense implying a slow process. But ...

journal_title：Medical hypotheses

authors： Kannan S

更新日期：2004-01-01 00:00:00

abstract：:Contrast-induced nephropathy (CIN) is regarded as acute tubular necrosis resulting from the cytotoxicity of contrast media and the medullary hypoxia linking to the interplay of vasoconstriction and vasodilatation. Saline infusion may prevent CIN by inhibiting renin release and thus production of angiotensin II (ANG II...

journal_title：Medical hypotheses

authors： Wong PC,Guo J,Zhang A

更新日期：2015-12-01 00:00:00

abstract：:The artificial pancreas requires fast and reliable glucose measurements. The peritoneal space has shown promising results, and in one of our studies we detected glucose changes in the peritoneal space already at the same time as in the femoral artery. The peritoneal lining is highly vascularised, covered by a single l...

journal_title：Medical hypotheses

authors： Åm MK,Fougner AL,Ellingsen R,Hjelme DR,Bösch PC,Stavdahl Ø,Carlsen SM,Christiansen SC

更新日期：2019-11-01 00:00:00

abstract：:Endothelial dysfunction due to reduced bioavailability of nitric oxide (NO) is an early step in the course of atherosclerotic cardiovascular disease (CVD). NO is synthesized from L-arginine via the action of NO synthase (NOS), which is known to be blocked by endogenous L-arginine analogues such as asymmetric dimethyla...

journal_title：Medical hypotheses

authors： Yamagishi S,Ueda S,Okuda S

更新日期：2007-01-01 00:00:00

abstract：:Transcendental mediation (TM) is a stylized form of physical and mental relaxation which is associated with changes in the secretion and release of several pituitary hormones. The hormonal changes induced by TM mimic the effects of the inhibitory neurotransmitter gamma aminobutyric acid (GABA). It is hypothesized that...

journal_title：Medical hypotheses

authors： Elias AN,Wilson AF

更新日期：1995-04-01 00:00:00

abstract：:Hypoxic-ischemic brain injury is an important cause of neonatal mortality and subsequent serious neurological sequel. In neonatal brain the severity of hypoxic injury varies most probably due to the effects of multiple protective or deleterious factors. But the mechanisms under this difference are still not full under...

journal_title：Medical hypotheses

authors： Kumral A,Tuzun F,Yesilirmak D,Duman N,Ozkan H

更新日期：2009-06-01 00:00:00

abstract：:A theoretical consideration of the relationship between plasma concentrations of calcium and parathyroid hormone suggests that the reported negative correlations between these variables in normal subjects and in patients with secondary hyperparathyroidism, and the positive correlation in patients with primary hyperpar...

journal_title：Medical hypotheses

authors： Walton RJ

更新日期：1977-01-01 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

authors： Altschuler EL

更新日期：2001-12-01 00:00:00

abstract：:The weight of available evidence suggests that leukaemogenesis is a multi-step, complex process. Since there are different types of leukaemia, it seems likely that a variety of distinct molecular mechanisms are involved, arising from different combinations of genetic defects. It is not therefore surprising that studie...

journal_title：Medical hypotheses

authors： Francis GE

更新日期：1987-03-01 00:00:00

abstract：:For a virus to survive and replicate in an organism, it must employ strategies to evade and misdirect the host's immune response. There is compelling evidence that the primary immunoevasive strategy utilized by the SARS virus, like influenza, is to inhibit its host's corticosteroid stress response. This is accomplishe...

journal_title：Medical hypotheses

authors： Wheatland R

更新日期：2004-01-01 00:00:00

abstract：:Virulence factors are microbial products that are known to be harmful to the host and may assist in the pathogenesis of the micro-organism. Superantigens, including those produced by bacteria and viruses, clearly act as virulence factors. The clinical effects of superantigens can be not only acute but also chronic and...

journal_title：Medical hypotheses

authors： Soos JM,Schiffenbauer J,Torres BA,Johnson HM

更新日期：1997-03-01 00:00:00

abstract：:For more than 35 years the author has treated multiple serious diseases in cats and dogs by correcting an unrecognized endocrine-immune imbalance originating with a deficiency or defect of cortisol. The cortisol abnormality creates a domino effect on feedback loops involving the hypothalamus-pituitary-adrenal axis. In...

journal_title：Medical hypotheses

authors： Plechner AJ

更新日期：2004-01-01 00:00:00

abstract：:The nasal mucosa is very vascular, receiving more blood flow per cubic centimeter of tissue than does muscle, brain or liver (Drettner and Aust, 1974; [1]). This vascularity can present a major problem during sinus surgery. Surgeons routinely use topical vasoconstrictors in endoscopic sinus surgery however, the optima...

journal_title：Medical hypotheses

authors： Campbell RG,Nair S,Sacks R,Douglas RG

更新日期：2014-06-01 00:00:00

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...

journal_title：Medical hypotheses

authors： Stone OJ

更新日期：1988-06-01 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

authors： Gursoy A

更新日期：2010-01-01 00:00:00