Abstract：
:Posterior capsule opacification (PCO) is a debilitating and relatively common complication of cataract surgery despite modern medical and surgical advances. The pathophysiology of this condition has largely been attributed to peptide mediators, such as transforming growth factor-beta (TGFβ), epidermal growth factor (EGF) and matrix metalloproteinases (MMPs), with the inhibition of these and other related molecules showing promising results. Studies have also shown that the levels of interleukin-6 are elevated in the eyes following cataract surgery and in various ocular inflammatory disorders that predispose to PCO development. This review proposes, utilizing ocular and extra-ocular disease models, several potential pathways through which IL-6 may modulate the activity of TGFβ, EGF, MMP-2/-9 and immune cells to promote PCO. Among the IL-6-mediated pathways discussed are the transactivation of EGF receptor, the up-regulation of TGFβ and MMP-2/-9, and the loss of ocular immune privilege through trans-signaling, down-regulation of T-regulatory cells (Tregs) and up-regulation of Th17 cells. After establishing both the potential role of ocular IL-6 in the development of PCO and the apparent upstream activity of IL-6 in relation to the known mediators of PCO, the author hypothesizes that intraoperative anti-IL-6 therapy may be of great benefit in reducing all parameters of PCO pathogenesis. This review also provides a strong basis for carrying out multiple experimental studies with IL-6 inhibitors to further elucidate the specific pathways by which IL-6 may promote PCO as well as to better determine what role inflammation may play in this disease process.
journal_name
Med Hypothesesjournal_title
Medical hypothesesauthors
Lewis ACdoi
10.1016/j.mehy.2012.12.042subject
Has Abstractpub_date
2013-04-01 00:00:00pages
466-74issue
4eissn
0306-9877issn
1532-2777pii
S0306-9877(13)00031-5journal_volume
80pub_type
杂志文章abstract：:Recent evidence suggests that covalent modifications to the genomic platform in the brain, that is DNA and its surrounding histones, provide a stable potentially lifelong mechanism for remembrance. Consequently, the making and unmaking of memories is accessible through pharmacological manipulations of these modificati...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2011.03.042
更新日期：2011-07-01 00:00:00
abstract：:Currently, drug repurposing is an alternative to novel drug development for the treatment of COVID-19 patients. The antimalarial drug chloroquine (CQ) and its metabolite hydroxychloroquine (HCQ) are currently being tested in several clinical studies as potential candidates to limit SARS-CoV-2-mediated morbidity and mo...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2020.109815
更新日期：2020-09-01 00:00:00
abstract：:Optic neuropathy is an invaliding pathology with diverse clinical manifestation and varying causes. Current understanding of etiopathological aspects of optical neuropathy does not provide an effective treatment protocol. In this article we discuss existing treatment methods, and their effectiveness, evaluated dependi...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2020.110104
更新日期：2020-10-01 00:00:00
abstract：:In view of the limited success of available treatment modalities for metastatic tumor, alternative and complementary strategies need to be developed. Oncolytic viruses are capable of selective replication in malignant cells and therefore offer levels of potency and specificity that are potentially far higher than conv...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2007.07.032
更新日期：2008-01-01 00:00:00
abstract：:Some recent studies have reported a strong link between obesity and attention-deficit/hyperactivity disorder (ADHD). However, to date, the factors underlying this newly described comorbidity are still unclear and unexplored. In the present article, we proposed that the dopamine system and implicate dopamine genes cont...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2007.10.012
更新日期：2008-01-01 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
pub_type： 杂志文章
doi：10.1054/mehy.2000.1201
更新日期：2001-04-01 00:00:00
abstract：:The adaptive value of sleep remains unknown in spite of the intense research performed throughout the last decades. However, few sleep researchers are aware of the difficulties posed by the blind acceptance of an extreme adaptationist viewpoint. Under this philosophy, every anatomical and functional detail present in ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2004.05.007
更新日期：2005-01-01 00:00:00
abstract：:Cancer stem cells are presently viewed as carriers of the growth initiating potential, repopulation capability and drug resistance in tumors. However, many of these fundamental properties of cancer are host-related, modified by cell-cell interactions and/or dependent on angiogenesis. Indeed, it is well established tha...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2005.09.004
更新日期：2006-01-01 00:00:00
abstract：:The structural rearrangement of human sheathed capillaries in congestive splenomegaly has been considered. In abnormal spleens the external diameter and wall thickness were decreased, while the internal diameter was increased. Moreover, the total length and the absolute number of sheathed capillaries were increased, t...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(95)90266-x
更新日期：1995-05-01 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
pub_type： 杂志文章
doi：10.1016/j.mehy.2009.10.043
更新日期：2010-04-01 00:00:00
abstract：:Initiation and development of atherosclerosis has largely been attributed to irregular shear stress patterns and values, in the current literature. Abnormalities such as low shear stress, reversing and oscillatory shear force patterns, as well as temporal variations of shear stress are the most cited factors. However,...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2013.04.041
更新日期：2013-08-01 00:00:00
abstract：:Timely recanalization of infarct related artery along with effective myocardial cell reperfusion represents a major challenge in the management of STEMI. The reperfusion of coronary arteries can induce further cardiomyocyte death by generating oxidative stress, which itself can mediate myocardial damage through a numb...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2017.03.010
更新日期：2017-05-01 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：:High fat and low carbohydrate diet, designated ketogenic diet, has been successfully used for the treatment of intractable epilepsy in a portion of patients, particularly in children. Several hypotheses have been worked out for the explanation of its beneficial effects, among others acetone has been raised as a causat...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2006.10.041
更新日期：2007-01-01 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
pub_type： 杂志文章
doi：10.1016/j.mehy.2005.10.011
更新日期：2006-01-01 00:00:00
abstract：:Herein it is hypothesized that M2-like macrophages or pre-macrophages of fetal origin might play a central role in development and closure of the neural tube. Early in embryonic development, pre-macrophages arise from the fetal yolk sac and track through the bloodstream to reach diverse embryonic tissues, where they m...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2019.109264
更新日期：2019-08-01 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
abstract：:Reversing chronic conditions remains an elusive goal of medicine. The modern medical paradigm based on blocking overactive pathways or augmenting deficient pathways offers symptomatic benefit, but tolerance to therapy can develop and treatment cessation can produce rebound symptoms due to compensatory mechanisms. We p...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2004.09.007
更新日期：2005-01-01 00:00:00
abstract：:Except for a few diseases of molecular mimicry such as rheumatic fever, post-streptococcal glomerulonephritis in children, and gluten-sensitive enteropathy, the cause of autoimmune diseases is unknown. Most autoimmune diseases are remitting-relapsing and the pathophysiology of either the initial attack or subsequent r...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2013.01.015
更新日期：2013-05-01 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
pub_type： 杂志文章
doi：10.1016/0306-9877(79)90074-4
更新日期：1979-08-01 00:00:00
abstract：:We recently demonstrated that amyloid beta peptide (Abeta) is catabolized primarily by a neutral endopeptidase, neprilysin, in the brain and that a neuropeptide, somatostatin (SST), regulates brain Abeta level via modulation of neprilysin activity. Because SST expression in the brain declines upon aging in various mam...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2005.02.045
更新日期：2005-01-01 00:00:00
abstract：:Myocardial ischemia/reperfusion injury (I/RI) is the principal cause of mortality and morbidity in diabetic patients undergoing cardiac surgery. However, there is no specific measure available to protect diabetic hearts in this clinical setting. Our clinical studies showed that adenosine pre-treatment or post-treatmen...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2012.06.022
更新日期：2012-10-01 00:00:00
abstract：:Cancer is the second cause of death worldwide, but current therapies are often insufficient or linked with toxicity. Initial evidence in scientific literature seems to support the role of non-pharmacological strategies, including hypoglycemia, in cancer treatment. The biological rationale for hypoglycemia-based treatm...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2019.109276
更新日期：2019-09-01 00:00:00
abstract：:The per review system for the assessment of research proposals is widely respected by working scientists. Nevertheless two problems associated with the operation of this system by the US National Institutes of Health are identified. First the scientist has no control over which committee will review an application and...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/s0306-9877(76)80019-9
更新日期：1976-01-01 00:00:00
abstract：:The rise of anatomical realism in sculpture with the Classical Greeks puzzles art historians. Recently, it has been discovered that the motor cortex perceives motor actions. I argue that Classical artists discovered a new aesthetic based on using art to stimulate not just, as previously, the visual cortex, but also th...
journal_title：Medical hypotheses
pub_type： 历史文章,杂志文章
doi：10.1016/s0306-9877(98)90257-2
更新日期：1998-07-01 00:00:00
abstract：:A case-control study was conducted in order to test the hypothesis that a reduced exposure to human seminal factors in the early reproductive life of women is a risk factor in breast cancer. The relative risk of exposure to the hypothetical semen-factor deficiency is 4.7 times greater for breast-cancer patients than f...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(78)90051-8
更新日期：1978-03-01 00:00:00
abstract：:Regulation of ion transport across the airway mucosa may be involved in the mechanisms producing hyperreactivity and asthma. Atrial Natriuretic Peptide (ANP) has been proposed to participate in the pathogenesis of asthma, and it has been found to have a bronchodilatory effect on asthmatic patients. Experimental eviden...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(91)90167-w
更新日期：1991-09-01 00:00:00
abstract：:Vasopressin is now commonly used to control bleeding during surgery of the cervix. In larger intravenous doses, vasopressin can cause coronary artery vasoconstriction and increase systemic vascular resistance. Nicotine has a similar effect on the coronary circulation. The effects of combining both these drugs has not ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/s0306-9877(96)90036-5
更新日期：1996-07-01 00:00:00
abstract：:Hyperbaric oxygen exposure is a recent hazzard for higher animals that originated as humans began underwater construction, exploration, and sports. Exposure can lead to abnormal brain EEG, convulsions, and death, the time to onset of each stage of pathology decreasing with increase in oxygen pressure. We provide evide...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2019.109375
更新日期：2019-11-01 00:00:00
abstract：:The prevalence of atopic diseases (atopic dermatitis, bronchial asthma, allergic rhinitis) has considerably increased for the last 40 years. This tendency has coincided with the beginning of the epoch of the use of the topical corticosteroids, which have a potent immunomodulation action. This fact itself as well as a ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2003.12.059
更新日期：2005-01-01 00:00:00
