Abstract：
:It is well known that chronic hepatitis C is associated with insulin resistance and metabolic syndrome which are risk factors for atherosclerosis and coronary heart disease. As a result, chronic hepatitis C might be thought, through its association with metabolic syndrome, to increase the risk of myocardial infarction. However, unexpectedly it was found that HCV infection is not associated with an increased risk of myocardial infarction. We are providing here an hypothesis of the mechanism through which HCV infection does not increase the risk for myocardial infarction and also may be protecting against some cardiovascular risks that typically develop in many patients with metabolic syndrome who do not have chronic hepatitis C. The suggested mechanism includes factors that are normal consequences of chronic hepatitis, such as: significant decrease in cholesterol and LDL levels; defected blood clotting system; impaired myocardial function; decreased venous return and central venous pressure; increased nitric oxide and TNF alpha levels; and diminished cardiac beta receptors signal transduction. All these factors contribute to a protective effect against cardiac ischemia and coronary heart disease. We suggest further studies to investigate this hypothesis.
journal_name
Med Hypothesesjournal_title
Medical hypothesesauthors
Metwally AH,Elgamal MAdoi
10.1016/j.mehy.2014.01.030subject
Has Abstractpub_date
2014-04-01 00:00:00pages
505issue
4eissn
0306-9877issn
1532-2777pii
S0306-9877(14)00041-3journal_volume
82pub_type
杂志文章abstract：:The results of numerous investigations on the impact of obesity on renal insufficiency conducted in recent years introduce certain dilemmas about their mutual agreement. Some studies suggest that obesity is negatively correlated with the terminal phase of renal failure. On the other hand, other research has shown that...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2010.07.004
更新日期：2010-12-01 00:00:00
abstract：:Essential hypertension is a heterogeneous multifactorial syndrome associated with a high cardiovascular risk. A multiple choice of antihypertensive drugs is available; however, a high individual variability to the antihypertensive therapy is still responsible for a modest reduction of the CV risk and not satisfactory ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2006.07.058
更新日期：2007-01-01 00:00:00
abstract：:Oral glucosamine has anti-inflammatory activity in rodents, and anecdotal evidence suggests that it may be clinically useful in inflammatory bowel disorders. A possible explanation is that supplemental glucosamine increases production of heparan sulfate (HS) proteoglycans by the vascular endothelium, thereby improving...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/s0306-9877(98)90247-x
更新日期：1998-07-01 00:00:00
abstract：:Nitrosamines have been identified in vaginal secretions of women with trichomoniasis. Both nitrites and amines the elements for nitrosamine synthesis are produced by the abnormal-predominantly anaerobic-vaginal flora of patients with bacterial vaginosis/trichomoniasis. The final formation of nitrosamines could also de...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(84)90159-2
更新日期：1984-12-01 00:00:00
abstract：:Herbs and minerals are the integral parts of traditional systems of medicine in many countries. Kushta is a form of herbo-mineral preparations used in traditional systems of medicine (Unani and Ayurvedic) of Indo-Pak subcontinent. These preparations have long been used and claimed to be the most effective and potent d...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/s0306-9877(02)00260-8
更新日期：2002-10-01 00:00:00
abstract：:In observing the phenomenon of alterations of tumor cell phenotypes, one may envision a mechanism that induces the change in tumor cell characteristics and the appearance of metastasis. Schirrmacher (1) has suggested that the effect of the microenvironment on tumor cells influences the control of gene expression and t...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(81)90010-4
更新日期：1981-05-01 00:00:00
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
pub_type： 杂志文章
doi：10.1016/0306-9877(91)90016-r
更新日期：1991-12-01 00:00:00
abstract：:The etiology of most kinds of dementia is still obscure and is probably multifactorial. We query whether excessive watching of television may contribute to the development of dementive processes for the following reasons: TV spectators are exposed to a mass of successive and rapid stimuli with little or no possibility...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(93)90128-d
更新日期：1993-11-01 00:00:00
abstract：:Although membrane sphingomyelin (SPH) serves as the precursor for many signaling molecules, its presence in large amounts, and its specific localization in the outer monolayer of the plasma membrane suggest that it may have a cytoprotective function. We propose that SPH helps maintain the integrity of the plasma membr...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1054/mehy.2001.1336
更新日期：2001-08-01 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：:In a previous paper, I have proposed that the deficiency of an endogenous caffeine-like substance is the underlying pathogenic mechanism in schizophrenia (1). In the present paper, my new concept is used to explain many of the clinical, biochemical, radiologic and pharmacologic facts about schizophrenia. ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(91)90261-v
更新日期：1991-10-01 00:00:00
abstract：:A high incidence of sudden unexplained nocturnal deaths has been reported among young Asian males. These deaths are known as Pokkuri in Japan, Bangungut in the Philippines and Sudden Unexplained Nocturnal Death in the United States. Post mortem analysis has demonstrated cardiac conduction defects in many of the victim...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(88)90071-0
更新日期：1988-06-01 00:00:00
abstract：:Incretin hormones have trophic effects on beta cell function that can aid prevention and treatment of diabetes. cAMP is the primary mediator of these effects, and has been shown to potentiate glucose-stimulated insulin secretion, promote proper beta cells differentiation by increasing expression of the crucial transcr...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2004.04.031
更新日期：2006-01-01 00:00:00
abstract：:Acute disseminated encephalomyelitis (ADEM) is defined as a multifocal, monophasic, demyelinating, and inflammatory disease involving the central nervous system. It typically begins within 6 weeks of an antigenic challenge such as infection or immunization. Perivenous inflammation, edema and demyelination are the path...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2006.10.061
更新日期：2007-01-01 00:00:00
abstract：:The "small-for-size" syndrome and "post-hepatectomy liver failure" refers to the development of liver failure (hyperbilirubinemia, coagulopathy, encephalopathy and refractory ascites) resulting from the reduction of liver mass beyond a certain threshold. This complication is associated with a high mortality and is a m...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2013.01.028
更新日期：2013-05-01 00:00:00
abstract：:The presence of the tumour induces important metabolic changes in the cancer patient which are not merely due to the fact that the tumour acts as a parasite, thus depleting the host of nutrients, but that are mainly the result of both tumoral and humoral mediators. The new metabolic status of the cancer patient may le...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/s0306-9877(98)90037-8
更新日期：1998-11-01 00:00:00
abstract：:Restless legs syndrome (RLS) exhibits sensorimotor symptoms. In familial cases, a gene at chromosomal location 9p-24-22 is linked to RLS and the expressed mutation is Dopamine Receptor Specific Individual Sensitivity (DRSIS). The symptoms are triggered during changes in alertness, generally at sleep hours, resulting f...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2009.02.028
更新日期：2009-08-01 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：: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：:Dental caries, a bacterial process that results in the acidic destruction of tooth structure, has historically been managed by the mechanical excavation of diseased tooth structure and then restoration with a synthetic material. The mechanical excavation of the infected site is most commonly achieved by a dental handp...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2011.05.002
更新日期：2011-09-01 00:00:00
abstract：:At the end of 2019, an emerging outbreak caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) that first reported from Wuhan, China. The first manifestations of patients infected with SARS-CoV-2 was flu-like symptoms, while other type of manifestations, especially gastrointestinal manifestations were...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2020.110476
更新日期：2020-12-31 00:00:00
abstract：:Normally, the transport of allergens through the intestinal epithelia to the blood is limited. It is hypothesised that if these compounds arrive in the blood circulation, they must percolate through the epithelial cell layer. Thus, food allergy (and thus atopic eczema) implies an increased intercellular leakage of the...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2004.10.018
更新日期：2005-01-01 00:00:00
abstract：:Mouth to mouth sexual kissing is seen in more than 90% of human cultures. Various theories have been put forward to account for this but none offer a full explanation within an evolutionary framework. As mouth to mouth sexual kissing exposes each participant to the diseases of the other, it must confer significant ben...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2009.09.033
更新日期：2010-02-01 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：:I hypothesize that the intermediates of the kynurenine (Kyn) pathway (KP) of tryptophan (Trp) degradation kynurenic acid (KA) and quinolinic acid (QA) play opposite roles in inflammatory diseases, with KA being antiinflammatory and QA being immunosuppressant. Darlington et al. have demonstrated a decrease in the ratio...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2018.06.021
更新日期：2018-09-01 00:00:00
abstract：:In light of the progressive, pubertal increases in serum gonadotropin (FSH, LH) levels coinciding with the peak incidence of simple goiters; the common alpha subunits associated with the gonadotropins, TSH and hCG; the ability of LH and hCG to bind to thyroid TSH receptors and affect thyroid function; and, the probabl...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(83)90003-8
更新日期：1983-04-01 00:00:00
abstract：:Epidemiological studies reveal that chronic alcoholics exhibiting liver disease are generally malnourished. Experimental studies unequivocally demonstrate that incidence of malnutrition cannot be avoided in animals fed liquid diets containing high concentrations of alcohol. Furthermore, ingestion of additional amounts...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(94)90087-6
更新日期：1994-02-01 00:00:00
abstract：:Genetic diseases of the skeletal system are difficult to accurately diagnose. Changes in the chemical structure of collagen significantly modify the structure of collagen in bone. The ratio of collagen hydration to hydroxylation reflects specific features of the collagen structure. The hypothesis proposes to use this ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(88)90148-x
更新日期：1988-11-01 00:00:00
abstract：:The hypothesis proposed in this article is that a haemodynamic mechanism may cause amyotrophic lateral sclerosis (ALS). The hypothesis is synthesized from three separate streams of medical research: (1) multiple sclerosis (MS) research; (2) ALS research; (3) atherosclerosis research. Each research stream was reviewed ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2010.03.017
更新日期：2010-10-01 00:00:00
abstract：:The few existing hypotheses for the function of the human hymen are weak. These are briefly reviewed, and a new hypothesis is proposed. We suggest that the appearance of the juvenile human hymen is based on 'premature' birth, following which infant helplessness and a subsequent advantage for vaginal protection from ex...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/s0306-9877(97)90223-1
更新日期：1997-08-01 00:00:00
