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 inhibitor of osteoclastic bone resorption. Because of this dual effect on physiological regulators of bone remodeling, L-arginine could potentially increase bone formation over bone resorption, and, consequently, increase bone mass. It is, therefore, hypothesized that oral supplementation of L-arginine may be a novel strategy in the prevention and treatment of osteoporosis. Studies of this simple, safe, and inexpensive therapy seem warranted.
journal_name
Med Hypothesesjournal_title
Medical hypothesesauthors
Visser JJ,Hoekman Kdoi
10.1016/0306-9877(94)90113-9subject
Has Abstractpub_date
1994-11-01 00:00:00pages
339-42issue
5eissn
0306-9877issn
1532-2777pii
0306-9877(94)90113-9journal_volume
43pub_type
杂志文章abstract::Data on lymphocyte biology indicate that the humoral system of B-cells is specifically active with precise analogies at all mucosal levels. Might there be a corresponding function for T-lymphocytes at the cutaneous structure level? Certain physiological findings appear to suggest that the two main lymphocyte populatio...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(81)90060-8
更新日期:1981-09-01 00:00:00
abstract::We develop here the hypothesis that polycystic kidneys (PCK) may maintain, to a certain extent, the ability to perform endocrine functions. We know that patients with adult polycystic kidney disease (APCKD) produce more erythropoietin and maintain a higher hematocrit than patients with other primary diseases of the ki...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(89)90127-8
更新日期:1989-09-01 00:00:00
abstract::It has been proposed that combination of indole-3-acetic acid (IAA) and horseradish peroxidase (HRP) could be useful as the basis for targeted cancer therapy involving antibody-, polymer-, or gene-directed approaches. By circulating IAA in human body, the cells labeled with HRP could be selectively killed since cytoto...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/s0306-9877(03)00012-4
更新日期:2003-05-01 00:00:00
abstract::It is a known fact that individuals who engaged in delinquent behavior in childhood are more probable to carry on similar behavior in adulthood. If the factors that lead children to involve in delinquency are defined, the risk of dragging children into crime can be detected before they are involved in crime and delinq...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2020.110118
更新日期:2020-10-01 00:00:00
abstract::Consideration of nine major factors predisposing to cerebral thrombosis, coronary thrombosis or thrombosis in the deep veins of the calf, reveals that these factors all have one thing in common. Estrogen administration, pregnancy, ageing, smoking, infection, trauma, surgery, soft water and winter season are all associ...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(79)90072-0
更新日期:1979-08-01 00:00:00
abstract::Rheumatic heart disease (RHD) remains a major cause of cardiac related mortality and morbidity in the developing countries due to poor diagnosis and lack of proper therapeutics. The definite reason of heart valve injury during RHD is poorly understood. Valvular endothelial cells play an important role in pathogenesis ...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2016.09.001
更新日期:2016-10-01 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::Epidemiological findings on the relation between foods and colon cancer are inconsistent. Many, but far from all, found positive associations for meat and fat and negative ones for vegetables and fruits. Explanations so far have focused on direct biochemical conversions in the colon or transit time, but they remain un...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1054/mehy.1999.0878
更新日期:2000-03-01 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::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::Several studies have described unusually high incidence of vascular thrombosis in coronavirus disease-2019 (COVID-19) patients. Pathogenesis of the vascular thrombosis in COVID-19 is least understood for now and presents a challenge to the treating physicians. Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2020.110320
更新日期:2020-12-01 00:00:00
abstract::Foster found areas with the highest incidence of SIDS in USA in 1983-1984 coincided with the highest areas recorded with the highest incidence of goitre in First World War troops (1). Reid compared the two populations described as having the highest incidence of SIDS worldwide. Both were selenium deficient areas (King...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(94)90124-4
更新日期:1994-04-01 00:00:00
abstract::The incidence of breast cancer in women has increased dramatically over the last decade. Epidemiological markers of this increased incidence include: endocrine related phenomena (early menarche, age of first parity and age of menopause); exposure of the breast to X-radiation; and a group of seemingly disparate factors...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(92)90090-y
更新日期:1992-07-01 00:00:00
abstract::In the last decades, relevant efforts have been made to reduce the cancer incidence in the European Union. The prevention programmes against cancer have obtained satisfactory results except for colorectal cancer (CRC). Identification of risk factors is primordial to plan preventive strategies for CRC. We hypothesize t...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2007.03.041
更新日期:2008-01-01 00:00:00
abstract::Vulvodynia (vulvar pain syndrome) is a chronic multifactorial disease affecting almost 13 million women in the USA and can lead to morbidity and a reduced quality of life. We hypothesize that an initial microbiological insult in the vagina causes modifications in the biological vaginal milieu and/or an alteration on t...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2013.04.043
更新日期:2013-08-01 00:00:00
abstract::The affected individual of hair loss demands help, because hair is viewed as a sign of youth and good health. Nowadays treatment of alopecia includes drug therapy and hair transplantation. Some drugs may promote hair growth, at least temporarily, but the treatment is effective only in milder alopecia, instead of exten...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2007.09.001
更新日期:2008-01-01 00:00:00
abstract::Idiopathic intracranial hypertension (IHH or pseudotumor cerebri) is an uncommon but important cause of headache, characterized by raised intracranial pressure (ICP) in the absence of infection and intracranial pathology on neuroimaging. Lumbar puncture (LP) is usually contra-indicated in situations where the ICP is s...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1054/mehy.1998.0756
更新日期:1999-10-01 00:00:00
abstract::No survival profit has been achieved for patients with disseminated prostate cancer since hormonal therapy was introduced. It is proposed that dissemination of rare prostatic cancer stem cells may lead to metastatic disease and that resistance of these cells to androgen ablation makes them responsible for failure of c...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2008.06.021
更新日期:2008-11-01 00:00:00
abstract::The German doctor Hermann Kümmell described Kümmell's disease as the clinical scenario in which patients suffer a trivial spinal trauma, but develop a symptomatic, progressive, angular kyphosis after a symptom-free period of months to years. Since an intravertebral vacuum phenomenon, which is considered indicative of ...
journal_title:Medical hypotheses
pub_type: 杂志文章,评审
doi:10.1016/j.mehy.2011.08.005
更新日期:2011-11-01 00:00:00
abstract::Goldberger discovered human pellagra was a non-infectious disease, affecting mostly the small and the timid in overcrowded institutions. Symptoms were diarrhoea, dermatitis and dementia. The staff and older children escaped the disease. They ate the meat and left the small and timid with the gravy. The 'Goldberger syn...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(93)90009-f
更新日期:1993-05-01 00:00:00
abstract::A comparison is made of the x-ray induced thyroid adenocarcinoma in the rat by the in-vitro, in-vivo method of Clifton et al. with previous data of Doniach on in-vivo irradiation in whole animals. The Clifton data consists of only one point at 500 rad. I have assumed that the probability of transformation per viable c...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(84)90070-7
更新日期:1984-04-01 00:00:00
abstract::Individuals with Down syndrome have signs of possible brain damage prior to birth. In addition to slowed and reduced mental development, they are much more likely to have cognitive deterioration and develop dementia at an earlier age than individuals without Down syndrome. Some of the cognitive impairments are likely ...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2004.08.020
更新日期:2005-01-01 00:00:00
abstract::It has been suggested that dopamine may play an important role in human evolution and adaptive behaviors. Recent studies have revealed an association between the dopamine system and social support among healthy individuals. However, the underlying mechanism remains unclear. In the present study, we propose a dopamine ...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2011.07.030
更新日期:2011-11-01 00:00:00
abstract::Administration of certain drugs such as antidepressants have been shown to produce a phenomenon known as time-dependent sensitization, a process in which the acute effects of the drugs sensitize and grow over time. While both preclinical and clinical studies have demonstrated time-dependent sensitization, it is still ...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1054/mehy.1999.1001
更新日期:2000-06-01 00:00:00
abstract::The repair and reconstruction of tissue defects and organ loss are severe problems, and many patients are eager to find avenues to these matters. Up until now, the number of methods used to repair tissue defects has increased, but all of these have their own advantages and inconveniences, and do not seem to have been ...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2007.08.009
更新日期:2008-01-01 00:00:00
abstract::Malignant hyperthermia (MH) is a rare myopathy inducing severe accident when carriers are exposed to triggering agents. MH susceptibility (MHS) is assessed by pharmacological tests performed on muscle strips. Exertional heat stroke (EHS) is a severe accident occurring during long and strenuous exercise. It has been ob...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(95)90116-7
更新日期:1995-09-01 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::Alcoholism is a major and world-wide health problem. A characteristic pattern of congenital defects, known as the fetal alcohol syndrome, has been detected in the offspring of mothers who are chronic alcoholics. The mechanism underlying the teratogenic effects of ethanol is not known. An important hypothesis is that e...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(91)90185-2
更新日期:1991-02-01 00:00:00
abstract::Cameron and Pauling have reported large survival increases in terminal cancer patients treated with Vitamin C. Their trials, which have been criticised because not based on random, double-blind principles, are reviewed here using a broad inductive method that relies on diverse data of varying quality. Conclusions are ...
journal_title:Medical hypotheses
pub_type: 临床试验,杂志文章
doi:10.1016/0306-9877(82)90089-5
更新日期:1982-01-01 00:00:00
abstract::Narcolepsy is a disorder characterized by the sudden urge to sleep. The biochemical etiology of this disorder is believed to be due to dopamine abnormalities. Since the precursor of dopamine is L-tyrosine, the administration of this amino acid may prove beneficial in the treatment of narcolepsy. Preliminary research a...
journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/0306-9877(90)90141-z
更新日期:1990-12-01 00:00:00