Abstract：
:Recent studies confirm that dietary methionine restriction increases both mean and maximal lifespan in rats and mice, achieving "aging retardant" effects very similar to those of caloric restriction, including a suppression of mitochondrial superoxide generation. Although voluntary caloric restriction is never likely to gain much popularity as a pro-longevity strategy for humans, it may be more feasible to achieve moderate methionine restriction, in light of the fact that vegan diets tend to be relatively low in this amino acid. Plant proteins - especially those derived from legumes or nuts - tend to be lower in methionine than animal proteins. Furthermore, the total protein content of vegan diets, as a function of calorie content, tends to be lower than that of omnivore diets, and plant protein has somewhat lower bioavailability than animal protein. Whole-food vegan diets that moderate bean and soy intake, while including ample amounts of fruit and wine or beer, can be quite low in methionine, while supplying abundant nutrition for health (assuming concurrent B12 supplementation). Furthermore, low-fat vegan diets, coupled with exercise training, can be expected to promote longevity by decreasing systemic levels of insulin and free IGF-I; the latter effect would be amplified by methionine restriction - though it is not clear whether IGF-I down-regulation is the sole basis for the impact of low-methionine diets on longevity in rodents.
journal_name
Med Hypothesesjournal_title
Medical hypothesesauthors
McCarty MF,Barroso-Aranda J,Contreras Fdoi
10.1016/j.mehy.2008.07.044subject
Has Abstractpub_date
2009-02-01 00:00:00pages
125-8issue
2eissn
0306-9877issn
1532-2777pii
S0306-9877(08)00383-6journal_volume
72pub_type
杂志文章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：:It is hypothesized that a topical application of a sulfonylurea drug, which can inhibit the ATP-sensitive potassium-gated channels (Kir6.X/SUR) present in human hair bulb tissues, will inhibit hair growth in a targeted manner. Diazoxide is used to treat severe hypoglycemia due to hyperinsulinism of infancy. However, t...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2015.08.025
更新日期：2015-12-01 00:00:00
abstract：:Inflammation and the genes, molecules, and biological pathways that lead to inflammatory processes influence many important and disparate biological processes and disease states that are quite often not generally considered classical inflammatory or autoimmune disorders. These include development, reproduction, aging,...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2007.02.019
更新日期：2007-01-01 00:00:00
abstract：:Bony abnormalities are common findings in cases of neurofibromatosis 1. We might hypothesize that neurofibromin, the protein encoded by the neurofibromatosis 1 gene, plays important roles in bone development. Loss of function of oligodendrocyte-myelin glycoprotein gene and increased activity of ras p21 might increase ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/s0306-9877(02)00225-6
更新日期：2003-04-01 00:00:00
abstract：:The available epidemiological data for amyotrophic lateral sclerosis (ALS) support an infectious etiology and lead us to propose a new hypothesis. We examined older epidemiological data concerning categories of the population with increased incidence (aged people, people living in rural areas, farmers, breeders), more...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2006.04.070
更新日期：2006-01-01 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
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：:It is increasingly admitted that Crohn's disease and ulcerative colitis, the two entities of inflammatory bowel disease, are initiated and reactivated by environmental factors in genetically susceptible hosts, and result from aberrant immune response to specific intestinal microbes, in the context of altered compositi...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2018.03.009
更新日期：2018-06-01 00:00:00
abstract：:Parkinson's disease (PD) is a neurodegenerative disorder, characterized by loss of dopaminergic neuromelanin containing neurons in the substantia nigra. Peripheral melanin, found in skin and hair, and neuromelanin appear to have some characteristics in common and share the same precursor for their synthesis; therefore...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2019.04.013
更新日期：2019-06-01 00:00:00
abstract：:We were interested whether fluorine, at the concentrations regarded as normal, can play a role in PCOS pathogenesis. The effect was not described in PCOS. Women with PCOS were diagnosed according to Rotterdam's criteria. The average age of 40 examined women with PCOS was 26.3 ± 5.5 years, BMI-29.16 ± 0.8, WHR-0.91 ± 0...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2019.05.007
更新日期：2019-07-01 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：: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：:Hepatocellular carcinoma (HCC) is the most common primary tumor of liver and its incidence continues to increase worldwide. HCC is a disease with multifactorial causes and genetic variability has been discussed as a risk factor for its development. Liver is a hormone-sensitive organ and therefore is influenced by gona...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2015.11.030
更新日期：2016-01-01 00:00:00
abstract：:Inflammatory eye diseases such as uveitis are common and may eventually result in vision loss. Iron can play a critical role in ocular inflammation via promoting the generation of oxygen free radicals and it is also nutritionally essential for microbial growth. Considering this involvement of iron in inflammation and ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2017.03.029
更新日期：2017-06-01 00:00:00
abstract：:In addition to classical metastatic pathways, recently gastric cancer was described having an alternative route called "endoluminal exfoliation". Provisional analyses demonstrated, in fact, this kind of shedding is associated with several clinico-pathological features indicative of aggressive behavior and resulted to ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2018.02.023
更新日期：2018-05-01 00:00:00
abstract：:Growing evidence has indicated the existence of deleterious networks in the brains of neurodegenerative disorders, including Alzheimer's disease. Parkinson's disease, amyotrophic lateral sclerosis and Huntington's disease. The deleterious networks are formed on the basis of the intimate interactions among the key path...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/s0306-9877(96)90071-7
更新日期：1996-10-01 00:00:00
abstract：:In a recent issue of Medical Hypotheses, Dr H L Newbold repeats the assertion that the cause of James B Duke's death in 1925 was pernicious anemia. Dr Newbold postulates that Mr Duke was neurologically impaired as a result of vitamin B-12 deficiency and that he suffered from depression. In an attempt to relieve this d...
journal_title：Medical hypotheses
pub_type： 传,历史文章,杂志文章
doi：10.1016/0306-9877(91)90130-q
更新日期：1991-11-01 00:00:00
abstract：:A holistic-organismic approach is suggested as foundation for intensified, systematic inquiry into relationships among adult attachment styles and various dimensions of physical and mental health. Exploratory findings of differences in stamina associated with adult attachment style are noted. The extent to which attac...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/s0306-9877(03)00125-7
更新日期：2003-07-01 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 world is rapidly ageing. It is against this backdrop that there are increasing incidences of dementia reported worldwide, with Alzheimer's disease (AD) being the most common form of dementia in the elderly. It is estimated that AD affects almost 4 million people in the US, and costs the US economy more than 65 mil...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/s0306-9877(03)00072-0
更新日期：2003-06-01 00:00:00
abstract：:Accurate detection and prevention of overuse musculoskeletal injuries is limited by the nature of somatic tissue injury. In the pathogenesis of overuse injuries, it is well recognized that an abnormal inflammatory response occurs within somatic tissue before pain is perceived which can disrupt the normal remodeling pr...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2015.12.003
更新日期：2016-02-01 00:00:00
abstract：:A hypothesis is presented concerning the origin of the action of muscles in the human and animal bodies It is advanced that muscle action originates with very rapid chemical reactions known as percussion reactions. These give rise to the temporary precipitation of solids in muscle cells. The accompanying volume change...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/s0306-9877(02)00149-4
更新日期：2002-08-01 00:00:00
abstract：:Celiac disease is an immune mediated disorder, the only one with a well-established origin, resulting from a permanent gluten intolerance. Although a gluten-free diet is currently the "safe" and appropriate therapy for celiac disease, this is not always an easy and simple option as "harmful" gluten may contaminate foo...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2007.04.003
更新日期：2007-01-01 00:00:00
abstract：:Parkinson's disease is one of the mostly seen neurological disease. It affects to nervous system and hinders people's vital activities. The majority of Parkinson's patients lose their ability to speak, write and balance. Many machine learning methods have been proposed to automatically diagnose Parkinson's disease usi...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2019.109483
更新日期：2020-02-01 00:00:00
abstract：:A novel virus named 2019 novel coronavirus (2019-nCoV/SARS-CoV-2) causes symptoms that are classified as coronavirus disease (COVID-19). Respiratory conditions are extensively described among more serious cases of COVID-19, and the onset of acute respiratory distress syndrome (ARDS) is one of the hallmark features of ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2020.109760
更新日期：2020-07-01 00:00:00
abstract：:The angiotensin-converting enzyme 2(ACE-2) receptors with approx. 0.8% congestion in conjunctival surface, leads to increase susceptibility of Covid-19 transmission through ocular surface. It has been observed that prophylactic measures such as goggle or face shield are unable to offer complete protection against ocul...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2020.110288
更新日期：2020-11-01 00:00:00
abstract：:Autism, an incurable neurodevelopmental brain disorder, is a complex psychopathology in which the affected individual cannot effectively self-regulate their sensory inputs toward coherent and focused motor outputs. There have been many hypotheses as to the etiology of autism - genetics, neurotransmitter imbalances, ea...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2011.02.038
更新日期：2011-06-01 00:00:00
abstract：:The prevalence of autism has increased dramatically over the last 60 years, and the cause of this increase is unclear. In this paradigm-shift paper, I propose an explanatory paradigm for the cause of autism and its increased prevalence in the general population. I also discuss how social and historical contexts may ha...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2020.110456
更新日期：2021-01-01 00:00:00
abstract：:The science of osteoimmunology, a relatively new field of research, reveals the important interactions between the immune system and skeletal system. Interactions occur between prostaglandin metabolism, inflammatory proteins and bone metabolism. Systemic as well as local sources of inflammation appear to be actively i...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2013.03.042
更新日期：2013-08-01 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
pub_type： 杂志文章
doi：10.1016/0306-9877(77)90043-3
更新日期：1977-01-01 00:00:00
abstract：:The levator ani muscles in women are overloaded by constant supporting abdominal contents, and counteracting rises of abdominal pressure at the level of the urethra. The excessive load leads to a decrease in their type II fibers. This results in stress urinary incontinence due to loss of the fibers responsible for add...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(93)90225-f
更新日期：1993-06-01 00:00:00
