Abstract：
:A mechanism is proposed for the formation of Ebg-evolved beta galactosidase-of E. coli based on the following assumptions: 1. In the presence of lactose, certain proteins being translated bind to their m-RNA-ribosome complexes; 2. This binding interferes with the release of m-RNA from the bacterial chromosome, marking the gene; 3. Thereupon a cytosine specific methylase and methyl cytosine deaminase pair, modify - mutate - the marked gene; 4. The result, after five or so mutations, is a new gene capable of coding for a different protein which can split lactose; 5. I propose that this enzyme pair has evolved to produce mutations internally, when need arises, as is the case here; 6. This may be a general mechanism through which drug resistance and detoxification of a novel chemical, could be achieved in bacteria; 7. All of these ideas are experimentally testable.
journal_name
Med Hypothesesjournal_title
Medical hypothesesauthors
Erhan Sdoi
10.1016/0306-9877(79)90009-4keywords:
subject
Has Abstractpub_date
1979-11-01 00:00:00pages
1263-71issue
11eissn
0306-9877issn
1532-2777pii
0306-9877(79)90009-4journal_volume
5pub_type
杂志文章abstract：:Dietary chromium supplementation for the treatment of diabetes remains controversial. The prevailing view that chromium supplementation for glucose regulation is unjustified has been based upon prior studies showing mixed, modest-sized effects in patients with type 2 diabetes (T2DM). Based on chromium's potential to i...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2015.03.020
更新日期：2015-07-01 00:00:00
abstract：:Periodontitis significantly decreases survival in hemodialysed patients with end stage renal disease (ESRD). Periodontitis-related microorganisms spreading into the bloodstream are thought to impair blood rheological parameters - for example, increasing whole blood viscosity, aggregating blood elements, and decreasing...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2009.04.053
更新日期：2010-02-01 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 right timing of surgical intervention in patients with aortic insufficiency is the crucial precondition for optimal postoperative course. To meet this demand, it is essential to have precise knowledge of the pathogenesis of this disease. Within the rabbit model of aortic insufficiency, four periods of adaptational...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(95)90239-2
更新日期：1995-12-01 00:00:00
abstract：:The objective of this work is to propose a biomechanical model of sacro-iliac joint dysfunction as a cause of low back pain. Sacro-iliac joint is known to be a source of low back pain. We also know that it is a very stable joint with little mobility. Surrounding lower limb and back muscles contribute a major part of t...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2005.02.035
更新日期：2005-01-01 00:00:00
abstract：:Pelvis is a functional shell-like unit consisting of the pelvic floor and perineum. The patients, who underwent a radical operation of the pelvis due to an oncological disease, often develop pelvic disorders. These disorders do not depend on the type of surgery or any presence of postoperative treatment (radio- and ch...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2008.10.019
更新日期：2009-03-01 00:00:00
abstract：:In this communication I propose a technique for manipulating the idiotype anti-idiotype network with the aim of enhancing the immune response to tumors. The theoretical basis for this technique follows from Jerne's network theory of the immune system. By tolerizing the host to immunoglobulin bearing idiotypes directed...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(85)90029-5
更新日期：1985-11-01 00:00:00
abstract：:Irritable Bowel Syndrome (IBS) is a condition that may be marked by abdominal pain, bloating, fullness, indigestion, belching, constipation and/or diarrhea. IBS symptoms can result from malabsorption of fructose. Fructose is a monosaccharide found naturally in small quantities in fruits and some vegetables, and in muc...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2015.05.019
更新日期：2015-09-01 00:00:00
abstract：:In humans, the nasal retina projects to the contralateral hemisphere, whereas the temporal retina projects ipsilaterally. The nasotemporal line that divides the retina into crossed and uncrossed parts coincides with the vertical meridian through the fovea. This normal projection of the retina is severely altered in al...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2015.06.028
更新日期：2015-10-01 00:00:00
abstract：:We have formalized extracellular and intracellular volume interaction with each other and the influence of these processes on the type of cell growth. The linearized model was verified by stereo metric solution and the results were compared with experimental data. Two theoretical solutions were found: Solution 1, extr...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2004.06.026
更新日期：2005-01-01 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：:Submagnetic domain magnetic fluid particles of approximately 10 nm average diameter complexed with CD4 or monoclonal antibody and then injected into the patient, will localize to the cell membrane of the target cell. These ferrofluid particles will interact with an externally applied rotating magnetic field of rapidly...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/s0306-9877(96)90226-1
更新日期：1996-01-01 00:00:00
abstract：:Chronic fatigue syndrome (CFS) has gained prominence since 1988 and a substantial amount of research has been done in this domain. However, it is still regarded as a controversial condition. Moreover, most of the symptoms of CFS itself are non-specific, occurring in many illnesses; some of the symptoms are also common...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/s0306-9877(03)00103-8
更新日期：2003-07-01 00:00:00
abstract：:Trigeminal neuralgia is a painful condition that causes great discomfort. Although this disease has been known for more than 1000years, there is still no consensus on its underlying mechanism or treatment. Many hypotheses have been reported to explain the cause and nature of trigeminal neuralgia. These include theorie...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2017.01.008
更新日期：2017-03-01 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
pub_type： 杂志文章
doi：10.1016/j.mehy.2005.12.050
更新日期：2006-01-01 00:00:00
abstract：:Trypanosoma cruzi is thought to selectively destroy the postganglionic cardiac vagal neurons of chagasic cardiac patients. This theory is based on morphologic and functional evidences obtained from chagasic individuals who were in very advanced stages of the disease. We have studied chagasic patients who were in both ...
journal_title：Medical hypotheses
pub_type： 杂志文章,评审
doi：10.1016/0306-9877(91)90027-v
更新日期：1991-06-01 00:00:00
abstract：:Exercise is a key component for prevention and treatment of type 2 diabetes. However, diabetes complications affect exercise habits. Computerized clinical decision support systems (CCDSSs) may help specialists improve their decision-making abilities in the management of diseases. We hypothesized that patients' diabeti...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2020.110070
更新日期：2020-10-01 00:00:00
abstract：:Gas formed in tissues and the circulating blood due to decompression is thought to be a significant factor in the progression of decompression illness (DCI). DCI is a potential problem for a growing population of professional and recreational divers. We hypothesise that these gas bubbles are not the causative agent in...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2008.11.022
更新日期：2009-04-01 00:00:00
abstract：:Purpura fulminans is a life threatening complication of many septic states, most notably meningococcaemia. It can also occur due to congenital deficiency of anticoagulant proteins. The pathophysiology of purpura fulminans is complex and not fully understood, but involves abnormalities of coagulation pathways, damage t...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2007.11.011
更新日期：2008-01-01 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：:It is proposed that, in addition to genetic factors involved in immune attack on myelin, higher concentrations of nerve growth factor in certain tissues during development determine susceptibility to multiple sclerosis. High early nerve growth factor in some vasculature of spontaneously hypertensive rats increases sym...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/s0306-9877(98)90071-8
更新日期：1998-12-01 00:00:00
abstract：:Several studies have demonstrated the existence of morphological, biological, genetic and antigenic correlations between human and animal retroviruses. Furthermore, some agents of bovine and feline origin can also be considered useful comparative models for the pathogenetic study of human diseases such as leukaemia, a...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(89)90194-1
更新日期：1989-07-01 00:00:00
abstract：:Inflammatory bowel disease (IBD) is a chronic inflammatory disorder, with increasing incidence and prevalence in the last one-half century. IBD patients suffer from autonomic vagal neuropathy and nerve dysfunction, with deficiency of acetylcholine in inflamed mucosa. Recent studies showed that death of enteric neuron ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2012.07.038
更新日期：2012-11-01 00:00:00
abstract：:The pancreatic leakage is a lethal postoperative complication to the patients after duodenopancreatectomy for carcinoma of head of pancreas. However, we found that the patients who survived this lethal postoperative complication could potentially acquire a longer survival time comparing with those without postoperativ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2009.02.024
更新日期：2009-08-01 00:00:00
abstract：:Increased chemotactic activity of peripheral polymorphonuclear (PMN) cells has been described in disease states of different etiology and may represent a common pathway in the generation of an inflammatory reaction. The suppressive effect of colchicine on PMN chemotaxis may explain its effect in apparently unrelated d...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(81)90017-7
更新日期：1981-01-01 00:00:00
abstract：:Vitamin A is a fat-soluble vitamin required for many physiological functions. The intracellular transport of vitamin A is assisted by proteins called cellular retinol-binding proteins (CRBP I/II). The absorption, storage and usage of vitamin A are regulated by a protein called lecithin:retinol acyltransferase (LRAT), ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2016.01.013
更新日期：2016-03-01 00:00:00
abstract：:Exercise induced bronchospasm (EIB) affects approximately 10% of normal individuals with higher prevalence rates among children, obese adults, and competitive athletes. Although hyperpnea with dry air is the best known cause, the problem is multifactorial with atopy, asthma and chlorine all playing established roles. ...
journal_title：Medical hypotheses
pub_type： 杂志文章,评审
doi：10.1016/j.mehy.2015.08.014
更新日期：2015-11-01 00:00:00
abstract：:Over-degradation of extracellular components by matrix metalloproteinases (MMPs) has been implicated as an important characteristic during the pathological evolution of the abdominal aortic aneurysm (AAA) and cerebral aneurysm (CA), which contribute to progressive dilation of vascular wall. However, mRNA and protein e...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2006.06.062
更新日期：2007-01-01 00:00:00
abstract：:Increased longevity is compromised for the quality of life due to prevalence of metabolic derangements and systemic degenerative disorders, as a result of lifestyle changes in modern days. In a craze to improve upon quality of life, use of pharmacological formulations aimed towards symptomatic treatment regimen is man...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2006.09.069
更新日期：2007-01-01 00:00:00
abstract：:Triggering receptor expressed on myeloid cells-1 (TREM-1) is a recently identified cell surface receptor that is expressed mainly on monocytes and neutrophils, and plays an important role as an amplifier of inflammatory response in acute and chronic inflammatory conditions. Recent studies suggested that TREM-1 contrib...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2011.10.042
更新日期：2012-02-01 00:00:00
