Congenital neoplasia--a stem cell pathology.

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

authors： Nathan P

更新日期：2000-06-01 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

authors： Zhu S

更新日期：2009-11-01 00:00:00

abstract：:Damaged DNA can lead to aneuploidy and/or chromosomal instability, which is believed to be major contributor to tumor progression. Genotoxic and oncogenic stresses-induced DNA damage activate the tumor suppressor pathways initiate DNA damage response (DDR). One of the cellular fates in response to DDR is permanent gro...

journal_title：Medical hypotheses

authors： Erol A

更新日期：2010-06-01 00:00:00

abstract：:Maintaining a body temperature within a narrow range is vital for the survival of all mammals, including humans. With the help of optogenetics, a better understanding of the thermoregulatory organs and pathways is achieved. Optogenetic activation of the GABAergic neurons in the ventral part of the lateral preoptic nuc...

journal_title：Medical hypotheses

authors： Koleva K,Pavlov O,Nikolov R,Behr R

更新日期：2020-06-01 00:00:00

abstract：:Rett syndrome (RTT) is an X-linked dominant postnatal severe and disabling neurodevelopmental disorder which is the second most common cause for genetic mental retardation in girls and the first pervasive disorder with a known genetic basis. The syndrome is primarily caused by mutations in the Methyl CpG binding prote...

journal_title：Medical hypotheses

authors： Ben-Zeev B,Aharoni R,Nissenkorn A,Arnon R

更新日期：2011-02-01 00:00:00

abstract：:The terminology relating to 'psychological stress' is so confused and ambiguous that research in this field - and application of its results - must surely be hampered. Relevant words with conflicting usages and scientific definitions include 'stress' itself, 'stressor', 'strain', 'challenge', 'demand', 'threat', 'reso...

journal_title：Medical hypotheses

authors： Burton RF,Hinton JW

更新日期：2010-04-01 00:00:00

abstract：:Is sleep especially beneficial in times of illness? Despite the widespread use of hypnotics, the medical position on this question is equivocal, for hospital practices seem rarely designed to encourage maximum sleeping. Sleep promotion is defined as the arrangement of conditions so that patients can achieve as much sl...

journal_title：Medical hypotheses

authors： Cumming G

更新日期：1984-09-01 00:00:00

abstract：:Recently, a theory has been postulated that suggests that vital enzymes in ingested food interact synergistically with enzymes within the human body and more specifically with enzymes in the digestive tract. Alterations in food enzymes induced by bulk processing including heating and irradiation and also the addition ...

journal_title：Medical hypotheses

authors： Prochaska LJ,Piekutowski WV

更新日期：1994-06-01 00:00:00

abstract：:Cannabis use has often been associated with various forms of psychosis. Today it is well established that everyone produces marijuana-like compounds known as endocannabinoids. The endocannabinoid system is a homeostatic regulator of all body systems including the nervous system. As a result, imbalances in the endocann...

journal_title：Medical hypotheses

authors： Melamede R

更新日期：2009-02-01 00:00:00

abstract：:Preliminary but increasing evidence suggests that attention-deficit/hyperactivity disorder (ADHD), Tourette's syndrome (TS), and restless legs syndrome (RLS) may be comorbid. In the present article, we hypothesize that ADHD, TS, and RLS may be part of a spectrum, and that iron deficiency contributes to the pathophysio...

journal_title：Medical hypotheses

authors： Cortese S,Lecendreux M,Bernardina BD,Mouren MC,Sbarbati A,Konofal E

更新日期：2008-01-01 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

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：:We would like to put forward the hypothesis that cancer patients may produce autoantibodies that promote uncontrolled cell growth and thereby function as oncogenes. Dying cells release proteins that stimulate the production of autoantibodies, an event also known to occur during the earliest stages of tumor growth. If ...

journal_title：Medical hypotheses

authors： Admon A,Shoshan SH

更新日期：2006-01-01 00:00:00

abstract：:The prevailing view of lung cancer is multi-step progression of normal cells into cancer cells through gain of function oncogenes coupled with loss of tumor suppressor genes. This progression of genetic damage ultimately results in the hallmarks of cancer. This theory has strong support from studies finding genetic da...

journal_title：Medical hypotheses

authors： Haura EB

更新日期：2006-01-01 00:00:00

abstract：:Bone grafting uses a wide range of materials derived mainly from exogenous sources. Autogenous teeth are often used fresh or fixed with alcohol for later use. Proposed here is a method of using cryogenically preserved autogenous extracted teeth, which could be macerated after thawing. This method avoids the possibilit...

journal_title：Medical hypotheses

authors： Touyz LZ,Afrashtehfar KI

更新日期：2016-07-01 00:00:00

abstract：:The etiology of sudden-death ischemic heart disease (SDIHD) remains an enigma. Data will be presented which suggest that SDIHD may be due to hypomagnesemia in and around the coronary arterial and arteriolar vessels. We have found that blood vessels (especially arteries and arterioles) deficient with respect to Mg can ...

journal_title：Medical hypotheses

authors： Altura BM

更新日期：1979-08-01 00:00:00

abstract：:Many embryonic genes may be sets of repeated genes. Processes of differentiation where the quantity of gene activity changes during embryogenesis may not reflect the transcription rate per se but instead be a result of the state of expression of constitutive repeated genes. Such repeated genes (in fact or theory) is d...

journal_title：Medical hypotheses

authors： Hancock RL

更新日期：1991-03-01 00:00:00

abstract：:Infantile neuroaxonal dystrophy (INAD) and Duchenne muscular dystrophy (DMD) are two deadly neuromuscular degenerative diseases of childhood. Knowledge on their pathophysiological mechanisms may direct us towards treatment or a cure. Although these diseases are caused by two totally different gene-mutations and cause ...

journal_title：Medical hypotheses

authors： Offringa-Hup A

更新日期：2020-04-01 00:00:00

abstract：:Antidepressants, including tricyclic antidepressants, monoamine oxidase inhibitors, selective serotonin reuptake inhibitors and serotonin-noradrenalin reuptake inhibitors, are the main biological treatment for major depression. However, not all depressed patients improve clinically despite appropriate treatment. Thus,...

journal_title：Medical hypotheses

authors： Tsai SJ

更新日期：2006-01-01 00:00:00

abstract：:Several hypotheses have been developed to interpret the progression of tubulointerstitial fibrosis (TF), including senescence, epithelial-mesenchymal transition, inflammation, chronic hypoxia, and reactive oxygen species. All of these hypotheses are based on persistent cell injury and localized cell death. Proliferati...

journal_title：Medical hypotheses

authors： Chen BC,Bai YH,Tang LL,Wang BQ,Liu B,Cai Y,Peng X,Yang YR,Zheng SL

更新日期：2014-06-01 00:00:00

abstract：:In 1937, Drs. Moritz and Oldt described arteriolar injuries in the kidneys (and other viscera) in hypertension, across the age range, in both sexes, and, in different races. This hypothesis proposes that injuries to vasomotor nerves cause the arteriolar injury in the kidney in hypertension, (as well as that in the ute...

journal_title：Medical hypotheses

authors： Gu QR,Li YY,Chen GR,Quinn MJ

更新日期：2018-02-01 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

authors： Becker KG

更新日期：2007-01-01 00:00:00

abstract：:In idiopathic scoliosis the convexity of the thoracic curve of the vertebral column is most commonly directed toward the right side. The right lung is normally larger than the left lung. This asymmetry acting through chest wall movement is hypothesized to exert rotatory forces on the vertebral column. The result, in p...

journal_title：Medical hypotheses

authors： Del Bigio MR

更新日期：1989-04-01 00:00:00

abstract：:In this paper it is proposed to extend the classical models of sleepiness in two ways. Firstly, the role of a wake drive, besides a sleep drive, in determining sleepiness is emphasised. Although this has already been suggested in literature and convincing arguments can be found, it is not generally accepted. Secondly,...

journal_title：Medical hypotheses

authors： De Valck E,Cluydts R

更新日期：2003-04-01 00:00:00

abstract：:To compensate for the high metabolic costs of lactation, the likelihood of re-impregnation shortly after childbirth is normally reduced due to hormonal changes triggered by breast feeding during the postpartum period. Nowadays, however, bottle feeding as a substitute for breast feeding precludes such changes and leads...

journal_title：Medical hypotheses

authors： Gallup GG Jr,Hobbs DR

更新日期：2011-09-01 00:00:00

abstract：:Guinea-pigs sensitised to ovalbumen excrete the antigen in their urine in a therapeutic concentration which prevents anaphylactic death after injection of a challenge dose of the ovalbumen. Sublingual administration of the correct dose of urine from allergic patients also provides therapeutic control of their allergic...

journal_title：Medical hypotheses

authors： Wilson CW,Lewis A

更新日期：1983-10-01 00:00:00

abstract：:Physical inactivity and a low maximal aerobic capacity (VO2max) strongly predict morbidity and mortality in patients with type 2 diabetes (T2D). Patients with T2D have a reduced VO2max when compared with healthy individuals of similar age, weight, and physical activity levels, and this lower aerobic capacity is usuall...

journal_title：Medical hypotheses

authors： Leone RJ,Lalande S

更新日期：2017-03-01 00:00:00

abstract：:For many years there was a general belief that the enzyme renin, having been secreted into the circulation by the kidney in response to appropriate stimuli, initially generates the inactive decapeptide angiotensin I in the bloodstream. This is then converted to the biologically active octapeptide angiotensin II by ang...

journal_title：Medical hypotheses

authors： Duckworth AJ,Goodship AE,Kendall HJ,Osborn EC

更新日期：2001-04-01 00:00:00

abstract：:Neuroleptic-induced tardive dyskinesia represents a major serious side-effect of chronic therapy with neuroleptic drugs. The pathomechanisms underlying this disorder are not well understood. Although the dopaminergic supersensitivity theory has gained most attention, there is evidence to suggest involvement of other t...

journal_title：Medical hypotheses

authors： Sandyk R

更新日期：1986-01-01 00:00:00

abstract：:Neurodegenerative diseases are associated with neuronal inclusions, comprised of protein aggregates. In Alzheimer's Disease (AD) and Lewy Body Disease (LBD) such lesions are distributed in a hierarchical retrograde transynaptic spatial pattern. This implies a retrograde transynaptic temporal propagation as well. There...

journal_title：Medical hypotheses

authors： Royall DR

更新日期：2013-02-01 00:00:00

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

authors： Franchi F,Seminara P,Montella F

更新日期：1981-09-01 00:00:00