Abstract：
:An association between Alzheimer's Disease (AD) and low CSF and serum vitamin B12 (B12) has recently been described (1, 2, 3). This is apparently independent of nutritional intake (4). It has been suggested that such patients may exhibit an atypical form of cobalamin deficiency (3, 4). It is therefore proposed that these deficiencies may be aetiologically important, at least in sub-groups of AD, and a mechanism is described whereby B12 deficiency may result in the characteristic neurotransmitter changes of the disease. The hypothesis generates predictions regarding biochemical evaluation of such patients and suggests associations between the neurochemical disturbances and structural abnormalities of AD.
journal_name
Med Hypothesesjournal_title
Medical hypothesesauthors
McCaddon A,Kelly CLdoi
10.1016/0306-9877(92)90074-mkeywords:
subject
Has Abstractpub_date
1992-03-01 00:00:00pages
161-5issue
3eissn
0306-9877issn
1532-2777pii
0306-9877(92)90074-Mjournal_volume
37pub_type
杂志文章abstract：:Based on a consideration of biochemical mechanisms, rational methods for the prevention of cancer and for its positive regression are presented. It is demonstrated that the means employed are fundamentally opposed so that if the preventive method were to be used after the onset of cancer, it would only accelerate its ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(81)90030-x
更新日期：1981-04-01 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：:Mood disturbances and depression are supposed to have a negative impact on patients' outcome in malignant tumour disease. On the other hand, poor prognosis in cancer patients is associated with chronic immune challenge which is paralleled by enhanced degradation of the essential amino acid tryptophan and thus decrease...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1054/mehy.1999.1043
更新日期：2000-08-01 00:00:00
abstract：:It has been previously proposed that conscious process involves the collapse of quantum, dynamical brain states through conscious observation. It has been further proposed that the brain process has an active role in selecting the status of uncertain stimuli. On the basis of these proposals it was predicted that event...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2003.10.002
更新日期：2004-01-01 00:00:00
abstract：:The number of deaths per year from hepatocellular carcinoma (HCC) exceeds 250000, placing it sixth as the cause of death from cancer worldwide. The primary etiology of most cases of HCC in the US is hepatitis B and/or C. Extensive research has demonstrated that the relationship between hepatitis B infection and the pr...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/s0306-9877(03)00263-9
更新日期：2004-01-01 00:00:00
abstract：:Many of the movement disorders seen in psychiatric patients are determined, in large part, by the dynamic balance of dopamine and acetylcholine in the basal ganglia. Gamma aminobutyric acid has effects on various neurotransmitters in the brain including dopamine and acetylcholine and is therefore relevant to a discuss...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(88)90008-4
更新日期：1988-12-01 00:00:00
abstract：:For American medical historiography, to borrow from Dickens, these are the best of times and the worst of times. These are the times when rigorous scholarship has been brought to bear on the field (with great improvement in the quality of research) and when medicine is disappearing from its own history. These are the ...
journal_title：Medical hypotheses
pub_type： 历史文章,杂志文章
doi：10.1016/0306-9877(92)90079-r
更新日期：1992-06-01 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 biophysical processes during electroconvulsive therapy (ECT) are discussed. The multilayer head structure causes a shunting and spreading of the major portions of the current all over the extracranial tissues. The final effect is that only a small percentage of the injected current passes into the brain. The secon...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(94)90052-3
更新日期：1994-08-01 00:00:00
abstract：:Analysis of the age distribution of cancers of the uterus reveals three clearly distinctive types: early- and late-onset cancers of the cervix and one form of cancer of the corpus. England and Wales mortality data are available for the three types combined from 1911; cancers of the cervix and corpus have been listed s...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(86)90086-1
更新日期：1986-05-01 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：:The cause and therapy of neurodegenerative diseases remain unsolved puzzles. These diseases are correlated with presence of beta sheet-rich amyloid assemblies. Here, I derive and assemble puzzle pieces to obtain a loose end-tying hypothesis for cause with direct implications for therapy. I use the following extrapolat...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2017.11.001
更新日期：2018-01-01 00:00:00
abstract：:Arthritis is inflammation in a joint often with joint damage, usually accompanied by pain, swelling and stiffness, resulting from infection, trauma, degenerative changes, metabolic disturbances, autoimmune or other causes. It occurs in various forms, including rheumatoid arthritis, osteoarthritis, bacterial arthritis ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2005.06.021
更新日期：2005-01-01 00:00:00
abstract：:Retinopathy of prematurity (ROP) is a disease of the immature retina and is the leading global cause of blindness in children. Two postnatal phases of the disease are distinguished, the first phase is thought to be caused by hyperoxia. One of the most relevant ROP risk factor in routine clinical practice is blood tran...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2019.109541
更新日期：2020-04-01 00:00:00
abstract：:Anemia of chronic disease (ACD) is a condition of decreased red cell mass secondary to some other chronic inflammatory condition. In ACD total body iron stores are normal, though serum iron is typically low secondary to iron sequestration by macrophages, and often iron supplementation is not an effective treatment for...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2005.01.036
更新日期：2005-01-01 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
pub_type： 杂志文章
doi：10.1016/j.mehy.2012.06.011
更新日期：2012-10-01 00:00:00
abstract：:Despite important advances in understanding its pathophysiology, therapy for septic shock remains largely symptomatic and supportive. Aiming to elevate the systemic arterial blood pressure by using vasoconstrictor manoeuvers are preferred without paying much attention to the ischaemia produced at the peripheral tissue...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2003.11.009
更新日期：2004-01-01 00:00:00
abstract：:Chronic, tertiary Lyme disease, a vector-borne infection most accurately designated neuroborreliosis, is often misdiagnosed. Infectors of the human brain, Lyme borrelial spirochetes are neurotropic, similar to the spirochetes of syphilis. Symptoms of either disease may be stable and persistent, transient and inconsist...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2005.04.009
更新日期：2005-01-01 00:00:00
abstract：:Some drugs blocking glutamate release produce reduced brain injury in some animal models of cerebral ischemia whereas others lack a clear effect. Meta-analysis is a widely used technique in clinical and epidemiological studies. However, it has never been used in the analysis of preclinical studies. In order to estimat...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1054/mehy.1998.0831
更新日期：2000-01-01 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：:Despite the fact that antidepressants represent the gold standard for the treatment of depression, not all patients treated with an antidepressant monotherapy achieve complete remission of depressive symptoms and functional recovery. Therefore, further examination of the components that may be involved in the action m...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2006.11.009
更新日期：2007-01-01 00:00:00
abstract：:We argue that our common diseases should not necessarily be taken as a sign of physiological error. Regulatory networks developed by evolutionary forces to support reproductive fitness happen to include disease as a side-effect. For example, inflammatory and autoimmune diseases are secondary to a strong defence agains...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2013.06.030
更新日期：2013-10-01 00:00:00
abstract：:Boron is increasingly added to food supplements due to multiple effects that have been reported in mammals after boric acid administration. Among these effects are inflammatory process control, bone and muscle strength enhancement, protein expression regulation, and a decreased risk of developing some pathologies in w...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2018.06.024
更新日期：2018-09-01 00:00:00
abstract：:Anorexia nervosa manifests a wide range of features which cannot fully be explained on the basis of socio-cultural pressures to be thin, nor by starvation, nor dehydration. Evidence is emerging of a significant neurobiological contribution to its aetiology. However there has to date been no explanation for its pathoge...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2012.01.033
更新日期：2012-05-01 00:00:00
abstract：:Many parasites induce characteristic changes in their host. The effect of Toxoplasma gondii infection on the cerebrum and neuropsychiatric patients has been increasingly emphasized in recent years. T. gondii has a high affinity for brain tissue where tachyzoites may form tissue cysts and persist for a life long time. ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2009.04.013
更新日期：2009-11-01 00:00:00
abstract：:The polyol pathway consists of two enzymes aldose reductase (AR) and sorbitol dehydrogenase (SDH); the former is the first enzyme in the polyol pathway, that catalyzes the reduction of glucose to sorbitol, the latter is the second one, that converts sorbitol to fructose using by NAD(+) as a cofactor. We along with oth...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/s0306-9877(03)00013-6
更新日期：2003-04-01 00:00:00
abstract：UNLABELLED:T helper (Th) lymphocytes have been classified into distinct subsets, Th1 and Th2 on the basis of the cytokines they produce. According to the cross-regulatory properties of Th1 and Th2 cells, one would assume that to be affected by a Th1 type disease increases susceptibility to a Th1 type disease and inhibi...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2006.03.039
更新日期：2006-01-01 00:00:00
abstract：:It is universally accepted that the use of antibiotics will lead to antimicrobial resistance. Traditionally, the explanation to this phenomenon was random mutation and horizontal gene transfer and amplification by selective pressure. Subsequently, a second mechanism of antibiotic-induced antimicrobial resistance acqui...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/s0306-9877(03)00205-6
更新日期：2003-10-01 00:00:00
abstract：:Osteoarthritis (OA) is a chronic, degenerative disorder of multifactorial aetiology, characterized by loss of articular cartilage and periarticular bone remodelling. Goals of managing OA include controlling pain, maintaining and improving function and health-related quality of life, and limiting functional impairment....
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2007.01.084
更新日期：2007-01-01 00:00:00
abstract：BACKGROUND:No method is currently available for preoperative approximation of the patient's situation to the one existing during pneumonectomy in general anesthesia with alternations of single and double-lung ventilation in the lateral position. We hypothesized that a patient breathing the room air in the sitting posit...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2011.07.003
更新日期：2011-10-01 00:00:00
