Abstract:
BACKGROUND:Limited evidence supports a hypothesis suggesting that schizophrenic symptoms may be the result of altered neuronal membrane structure and metabolism. This structure and metabolism is dependent on blood plasma levels of certain essential fatty acids and their metabolites. OBJECTIVES:To review the effects polyunsaturated fatty acids for people with schizophrenia. SEARCH STRATEGY:The initial search of 1998 was updated. We searched the Cochrane Schizophrenia Group's Register (July 2002), and authors of included studies and relevant pharmaceutical companies were contacted. SELECTION CRITERIA:All randomised clinical trials of polyunsaturated fatty acid treatment for schizophrenia. DATA COLLECTION AND ANALYSIS:Reviewers, working independently, selected, quality assessed, and extracted relevant data. Analysis was on an intention-to-treat basis. Where possible and appropriate Relative Risk (RR) and their 95% confidence intervals (CI) were calculated and the number needed to treat (NNT) estimated. For continuous data, weighted mean differences (WMD) and their 95% confidence intervals were calculated. Data were inspected for heterogeneity. MAIN RESULTS:Five short small studies (n=313) were included. One small study (n=30) suggested that an omega-3 EFA (ecisapentenoic acid (EPA) enriched oil) may have some antipsychotic properties when compared with placebo, even if not given as a supplement to standard drugs (RR not needing antipsychotic drugs 0.73 CI 0.54 to 1.00; RR less than 25% improvement in PANSS 0.54 CI 0.3 to 0.96, NNT 3 CI 2 to 29). Other studies comparing omega-3 EFA's with placebo as a supplement to antipsychotics were too small to be conclusive. There was a suggestion that people already on antipsychotics when given omega-3 EFA supplementation had greater improvement of mental state compared to those receiving a placebo supplementation but the result were not significant (n=29, 1 RCT, RR <25% improvement in PANSS 0.62 CI 0.37 to 1.05). However, the mental state of both medicated and un-medicated patients was significantly better for those receiving omega-3 EFA supplementation (n=59, 2 RCTs, RR <25% improved on PANSS 0.58 CI 0.39 to 0.85, NNT 3 CI 2-8). Medium term data, however, did not favour either group (n=87, 1 RCT, MD PANSS endpoint -1.0 CI -8.15 to 6.15). All studies had low attrition (<10% total, n=271, 4 RCTs, RR leaving the study early 0.91 CI 0.36 to 2.33). Another study (n=31) comparing two types of omega-3 EFA's, ecisapentenoic acid enriched oil and docosahexanoic acid oil, also found no differences between these two EFA's in measures of mental state. One small (n=16) study investigated the effects of an omega-6 EFA compared with placebo for tardive dyskinesia and found no clear effects. There is not a clear dose response to omega-3 supplementation. Adverse effects seem rare but diarrhoea may be a problem in the medium term. REVIEWER'S CONCLUSIONS:The use of omega-3 polyunsaturated fatty acids for schizophrenia remains experimental and large well designed, conducted and reported studies are indicated and needed.
journal_name
Cochrane Database Syst Revjournal_title
The Cochrane database of systematic reviewsauthors
Joy CB,Mumby-Croft R,Joy LAdoi
10.1002/14651858.CD001257keywords:
subject
Has Abstractpub_date
2003-01-01 00:00:00pages
CD001257issue
2issn
1469-493Xpub_type
杂志文章,评审abstract:BACKGROUND:Foot ulceration is thought to affect 15% of all people with diabetes at some time during their life. OBJECTIVES:To assess the effectiveness of pressure relieving interventions in the prevention and treatment of diabetic foot ulcers. SEARCH STRATEGY:Searches of 19 databases, hand searching of journals, bibl...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,评审
doi:10.1002/14651858.CD002302
更新日期:2000-01-01 00:00:00
abstract:BACKGROUND:Laetrile is the name for a semi-synthetic compound which is chemically related to amygdalin, a cyanogenic glycoside from the kernels of apricots and various other species of the genus Prunus. Laetrile and amygdalin are promoted under various names for the treatment of cancer although there is no evidence for...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,评审
doi:10.1002/14651858.CD005476.pub4
更新日期:2015-04-28 00:00:00
abstract:BACKGROUND:Spinal anaesthesia has been in use since the turn of the late 19th century. The most serious complication of this technique is damage to the spinal cord or nerve roots resulting in lasting neurologic sequelae. Such serious adverse effects seldom happen. There has been an increase in the number of reports dur...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,评审
doi:10.1002/14651858.CD003006
更新日期:2003-01-01 00:00:00
abstract:BACKGROUND:High intracranial pressure (ICP) is the most frequent cause of death and disability after severe traumatic brain injury (TBI). It is usually treated with general maneuvers (normothermia, sedation, etc.) and a set of first-line therapeutic measures (moderate hypocapnia, mannitol, etc.). When these measures fa...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,meta分析
doi:10.1002/14651858.CD003983.pub3
更新日期:2019-12-31 00:00:00
abstract:BACKGROUND:Trabeculectomy is performed as a treatment for glaucoma to lower intraocular pressure (IOP). The surgical procedure involves creating a channel through the wall of the eye. However scarring during wound healing can block this channel which will lead to the operation failing. Anti-vascular endothelial growth ...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,评审
doi:10.1002/14651858.CD009782.pub2
更新日期:2016-01-15 00:00:00
abstract:BACKGROUND:Impairment of vision is associated with a loss of function in activities of daily living. Avoidance of physical activity and consequent reduced functional capacity is common in older people with visual impairment and an important risk factor for falls. Indeed, the rate of falls and fractures is higher in old...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,评审
doi:10.1002/14651858.CD009233.pub2
更新日期:2013-06-05 00:00:00
abstract:BACKGROUND:Palatal canines are upper permanent canine (eye) teeth that have become displaced in the roof of the mouth. They are a frequently occurring anomaly, present in 2% to 3% of the population. Management of this problem is both time consuming and expensive and involves surgical exposure (uncovering) followed by f...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,评审
doi:10.1002/14651858.CD006966.pub2
更新日期:2008-10-08 00:00:00
abstract:BACKGROUND:Previous systematic reviews have not shown clear benefit of glucocorticoids for acute viral bronchiolitis, but their use remains considerable. Recent large trials add substantially to current evidence and suggest novel glucocorticoid-including treatment approaches. OBJECTIVES:To review the efficacy and safe...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,meta分析,评审
doi:10.1002/14651858.CD004878.pub3
更新日期:2010-10-06 00:00:00
abstract:BACKGROUND:In children and adults the consequences of influenza are mainly absences from school and work, however the risk of complications is greatest in children and people over 65 years old. OBJECTIVES:To appraise all comparative studies evaluating the effects of influenza vaccines in healthy children; assess vacci...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,meta分析,评审
doi:10.1002/14651858.CD004879.pub2
更新日期:2006-01-25 00:00:00
abstract:BACKGROUND:Surgery on the abdominal aorta to treat aneurysms or occlusive disease is a major undertaking which requires intensive physiological support and fluid management. Blood products are often used but the main fluid replacement is with crystalloids or colloids. For years there has been controversy over which flu...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,meta分析,评审
doi:10.1002/14651858.CD000991.pub2
更新日期:2010-01-20 00:00:00
abstract:BACKGROUND:Acute respiratory infections (ARIs) comprise a large and heterogeneous group of infections including bacterial, viral and other aetiologies. In recent years, procalcitonin - the prohormone of calcitonin - has emerged as a promising marker for the diagnosis of bacterial infections and for improving decisions ...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,meta分析,评审
doi:10.1002/14651858.CD007498.pub2
更新日期:2012-09-12 00:00:00
abstract:BACKGROUND:Nonsteroidal anti-inflammatory drugs (NSAIDs) are used for pain relief following tonsillectomy in children. However, as they inhibit platelet aggregation and prolong bleeding time, they could cause increased perioperative bleeding. The overall risk remains unclear. OBJECTIVES:The primary objective of this r...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,meta分析,评审
doi:10.1002/14651858.CD003591.pub2
更新日期:2005-04-18 00:00:00
abstract:BACKGROUND:Adhesions are fibrin bands that are a common consequence of gynaecological surgery. They are caused by various conditions including pelvic inflammatory disease and endometriosis. Adhesions are associated with considerable co-morbidity, including pelvic pain, subfertility and small bowel obstruction. Patients...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,meta分析,评审
doi:10.1002/14651858.CD001298.pub4
更新日期:2014-07-09 00:00:00
abstract:BACKGROUND:The beneficial effects of regular exercise for people living with or beyond cancer are becoming apparent. However, how to promote exercise behaviour in sedentary cancer cohorts is not as well understood. A large majority of people living with or recovering from cancer do not meet exercise recommendations. He...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,meta分析,评审
doi:10.1002/14651858.CD010192.pub2
更新日期:2013-09-24 00:00:00
abstract:BACKGROUND:Misoprostol (Cytotec, Searle) is a prostaglandin E1 analogue marketed for use in the prevention and treatment of peptic ulcer disease. It is inexpensive, easily stored at room temperature and has few systemic side effects. It is rapidly absorbed orally and vaginally. Although not registered for such use, mis...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,评审
doi:10.1002/14651858.CD000941
更新日期:2001-01-01 00:00:00
abstract:BACKGROUND:Angiostrongylus cantonensis (A. cantonensis) is the major cause of infectious eosinophilic meningitis. Dead larvae of this parasite cause inflammation and exacerbate symptoms of meningitis. Corticosteroids are drugs used to reduce the inflammation caused by this parasite. OBJECTIVES:To assess the efficacy a...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,评审
doi:10.1002/14651858.CD009088.pub3
更新日期:2015-02-17 00:00:00
abstract:BACKGROUND:Endometriosis is a chronic, recurring condition that occurs during the reproductive years. It is characterized by endometrial tissue developing outside the uterine cavity. This endometrial tissue development is dependent on oestrogen produced primarily by the ovaries and, therefore, traditional management ha...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,meta分析,评审
doi:10.1002/14651858.CD007677.pub3
更新日期:2012-01-18 00:00:00
abstract:BACKGROUND:Intravenous thrombolytic therapy is the standard care for patients with acute myocardial infarction, based upon its widespread availability and ability to reduce patient mortality well demonstrated in randomised trials. Despite its proven efficacy, thrombolytic therapy has limitations. Many patients are inel...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,评审
doi:10.1002/14651858.CD001560.pub2
更新日期:2007-07-18 00:00:00
abstract:BACKGROUND:Diabetes is a chronic illness characterised by insulin resistance or deficiency, resulting in elevated glycosylated haemoglobin A1c (HbA1c) levels. Diet and adherence to dietary advice is associated with lower HbA1c levels and control of disease. Dietary history may be an effective clinical tool for diabetes...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,评审
doi:10.1002/14651858.CD008488.pub2
更新日期:2011-12-07 00:00:00
abstract:BACKGROUND:There is a wide geographical variation in asthma prevalence and one explanation may be in dietary salt consumption. OBJECTIVES:To assess the effect of dietary sodium reduction in patients with asthma. SEARCH STRATEGY:A search was conducted using the Cochrane Airways Group asthma register. Bibliographies of...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,meta分析,评审
doi:10.1002/14651858.CD000436.pub2
更新日期:2004-01-01 00:00:00
abstract:BACKGROUND:Otitis media with effusion (OME) or 'glue ear' is an accumulation of fluid in the middle ear, in the absence of acute inflammation or infection. It is the commonest cause of acquired hearing loss in childhood and the usual reason for insertion of 'grommets'. Potential treatments include decongestants, mucoly...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,meta分析,评审
doi:10.1002/14651858.CD006285
更新日期:2006-10-18 00:00:00
abstract:BACKGROUND:In the years after the discovery of oral antipsychotic medications, it became clear that there was a link between stopping medication and relapse of psychotic symptoms. A series of long-acting preparations was developed. These depot preparations, are frequently used for those who find taking oral medication ...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,评审
doi:10.1002/14651858.CD000307
更新日期:2000-01-01 00:00:00
abstract:BACKGROUND:In children with urinary tract infection (UTI), only those with pyelonephritis (and not cystitis) are at risk for developing long-term renal sequelae. If non-invasive biomarkers could accurately differentiate children with cystitis from children with pyelonephritis, treatment and follow-up could potentially ...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,meta分析,评审
doi:10.1002/14651858.CD009185.pub2
更新日期:2015-01-20 00:00:00
abstract:BACKGROUND:Treatment with recombinant human erythropoietin (rHu EPO) in dialysis patients has been shown to be highly effective in terms of correcting anaemia and improving quality of life. There is debate concerning the benefits of rHu EPO use in pre-dialysis patients. There is a concern that rHu EPO may accelerate th...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,评审
doi:10.1002/14651858.CD003266
更新日期:2001-01-01 00:00:00
abstract:BACKGROUND:The pathogenesis of Crohn's disease involves migration of leukocytes into gut tissue and subsequent inflammation. Natalizumab (Tysabri(R), Elan Pharmaceuticals and Biogen Idec) a recombinant humanized IgG4 monoclonal antibody that blocks adhesion and subsequent migration of leukocytes into the gut by binding...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,meta分析,评审
doi:10.1002/14651858.CD006097.pub2
更新日期:2007-01-24 00:00:00
abstract:BACKGROUND:Staples can be placed during the making of an incision, with the aim of decreasing blood loss from the cut edges. OBJECTIVES:The objective of this review was to assess the effects of using a stapler with absorbable staples to extend the uterine incision at lower segment caesarean section. SEARCH STRATEGY:W...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,评审
doi:10.1002/14651858.CD000005
更新日期:2000-01-01 00:00:00
abstract:BACKGROUND:Multiple analgesic strategies for pain relief during labour are available. Recently remifentanil, a short-acting opioid, has recently been used as an alternative analgesic due to its unique pharmacological properties. OBJECTIVES:To systematically assess the effectiveness of remifentanil intravenous patient-...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,meta分析,评审
doi:10.1002/14651858.CD011989.pub2
更新日期:2017-04-13 00:00:00
abstract:BACKGROUND:Chronic wounds are common and present a health problem with significant effect on quality of life. Various pathologies may cause tissue breakdown, including poor blood supply resulting in inadequate oxygenation of the wound bed. Hyperbaric oxygen therapy (HBOT) has been suggested to improve oxygen supply to ...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,meta分析,评审
doi:10.1002/14651858.CD004123.pub3
更新日期:2012-04-18 00:00:00
abstract:BACKGROUND:The results from controlled clinical trials investigating the efficacy of azathioprine and 6-mercaptopurine for the treatment of active Crohn's disease were conflicting and controversial. A meta-analysis was performed to assess the effectiveness of these drugs for the induction of remission in active Crohn's...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,meta分析,评审
doi:10.1002/14651858.CD000545.pub2
更新日期:2009-10-07 00:00:00
abstract:BACKGROUND:Post-thrombotic syndrome (PTS) is a long-term complication of deep venous thrombosis (DVT) that is characterised by pain, swelling, and skin changes in the affected limb. One in three patients with DVT will develop post-thrombotic sequelae within five years. Rutosides are a group of compounds derived from ho...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,meta分析
doi:10.1002/14651858.CD005625.pub4
更新日期:2018-11-08 00:00:00