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| 1 | Dementia and osteoporosis in a geriatric population: Is there a common link?显示文摘AIM To determine the existence of a common pathological link between dementia and osteoporosis through reviewing the current evidence base. METHODS This paper reviews the current literature on osteoporosis and dementia in order to ascertain evidence of a common predisposing aetiology. A literature search of Ovid MEDLINE(1950 to June 2016) was conducted. The keywords 'osteoporosis', 'osteoporotic fracture', 'dementia' and 'Alzheimer's disease'(AD) were used to determine the theoretical links with the most significant evidence base behind them. The key links were found to be vitamins D and K, calcium, thyroid disease, statins, alcohol and sex steroids. These subjects were then searched in combination with the previous terms and the resulting papers manually examined. Theoretical, in vitro and in vivo research were all used to inform this review which focuses on the most well developed theoretical common causes for dementia(predominantly Alzheimer's type) and osteoporosis.RESULTS Dementia and osteoporosis are multifaceted disease processes with similar epidemiology and a marked increase in prevalence in elderly populations. The existence of a common link between the two has been suggested despite a lack of clear pathological overlap in our current understanding. Research to date has tended to be fragmented and relatively weak in nature with multiple confounding factors reflecting the difficulties of in vivo experimentation in the population of interest. Despite exploration of various possible mechanisms in search for a link between the two pathologies, this paper found that it is possible that these associations are coincidental due to the nature of the evidence available. One finding in this review is that prior investigation into common aetiologies has found raised amyloid beta peptide levels in osteoporotic bone tissue, with a hypothesis that amyloid beta disorders are systemic disorders resulting in differing tissue manifestations. However, our findings were that the most compelling evidence of a common yet independent aetiology lies in the APOE4 allele, which is a well-established risk for AD but also carries an independent association with fracture risk. The mechanism behind this is thought to be the reduced plasma vitamin K levels in individuals exhibiting the APOE4 allele which may be amplified by the nutritional deficiencies associated with dementia, which are known to include vitamins K and D. The vitamin theory postulates that malnutrition and reduced exposure to sunlight in patients with AD leads to vitamin deficiencies. CONCLUSION Robust evidence remains to be produced regarding potential links and regarding the exact aetiology of these diseases and remains relevant given the burden of dementia and osteoporosis in our ageing population. Future research into amyloid beta, APOE4 and vitamins K and D as the most promising aetiological links should be welcomed. | Candice L Downey Adam Young Emily F Burton Simon M Graham Robert J Macfarlane Eva-Maria Tsapakis Eleftherios Tsiridis | 2017 | World Journal of Orthopedics2017，8，5： | 6 |
| 2 | Randomized trial in malignant biliary obstruction:Plastic vs partially covered metal stents显示文摘AIM:To compare efficacy and complications of par-tially covered self-expandable metal stent(pcSEMS)to plastic stent(PS)in patients treated for malignant,infrahilar biliary obstruction.METHODS:Multicenter prospective randomized clinical trial with treatment allocation to a pcWallstent(SEMS)or a 10 French PS.Palliative patients aged≥18,for infrahilar malignant biliary obstruction and a Karnofsky performance scale index>60%from 6 participating North American university centers.Primary endpoint was time to stent failure,with secondary outcomes of death,adverse events,Karnofsky performance score and short-form-36 scale administered on a three-monthly basis for up to 2 years.Survival analyses were performed for stent failure and death,with Cox proportional hazards regression models to determine significant predictive characteristics.RESULTS:Eighty-five patients were accrued over 37mo,42 were randomized to the SEMS group and 83patients were available for analyses.Time to stent failure was 385.3±52.5 d in the SEMS and 153.3±19.8 d in the PS group,P=0.006.Time to death did not differ between groups(192.3±23.4 d for SEMS vs211.5±28.0 d for PS,P=0.70).The only significant predictor was treatment allocation,relating to the time to stent failure(P=0.01).Amongst other measured outcomes,only cholangitis differed,being more common in the PS group(4.9%vs 24.5%,P=0.029).The small number of patients in follow-up limits longitudinal assessments of performance and quality of life.From an initially planned 120 patients,only 85 patients were recruited.CONCLUSION:Partially covered SEMS result in a longer duration till stent failure without increased complication rates,yet without accompanying measurable benefits in survival,performance,or quality of life. | Peter L Moses Khalid M AlNaamani Alan N Barkun Stuart R Gordon Roger D Mitty M Stanley Branch Thomas E Kowalski Myriam Martel Viviane Adam | 2013 | World Journal of Gastroenterology2013，19，46： | 6 |
| 3 | Clinical application of concentrated bone marrow aspirate in orthopaedics:A systematic review显示文摘AIM To examine the evidence behind the use of concentrated bone marrow aspirate(c BMA) in cartilage, bone, and tendon repair; establish proof of concept for the use of cB MA in these biologic environments; and provide the level and quality of evidence substantiating the use of cB MA in the clinical setting.METHODS We conducted a systematic review according to PRISMA guidelines. EMBASE, MEDLINE, and Web of Knowledge databases were screened for the use of cB MA in the repair of cartilage, bone, and tendon repair. We extracted data on tissue type, cB MA preparation, cB MA concentration, study methods, outcomes, and level of evidence and reported the results in tables and text.RESULTS A total of 36 studies met inclusion/exclusion criteria and were included in this review. Thirty-one of 36(86%) studies reported the method of centrifugation and preparation of cB MA with 15(42%) studies reporting either a cell concentration or an increase from baseline. Variation of c BMA application was seen amongst the studies evaluated. Twenty-one of 36(58%) were level of evidence Ⅳ, 12/36(33%) were level of evidence Ⅲ, and 3/36(8%) were level of evidence Ⅱ. Studies evaluated full thickness chondral lesions(7 studies), osteochondral lesions(10 studies), osteoarthritis(5 studies), nonunion or fracture(9 studies), or tendon injuries(5 studies). Significant clinical improvement with the presence of hyaline-like values and lower incidence of fibrocartilage on T2 mapping was found in patients receiving cB MA in the treatment of cartilaginous lesions. Bone consolidation and time to bone union was improved in patients receiving cB MA. Enhanced healingrates, improved quality of the repair surface on ultrasound and magnetic resonance imaging, and a decreased risk of re-rupture was demonstrated in patients receiving cB MA as an adjunctive treatment in tendon repair. CONCLUSION The current literature demonstrates the potential benefits of utilizing c BMA for the repair of cartilaginous lesions, bony defects, and tendon injuries in the clinical setting. This study also demonstrates discrepancies between the literature with regards to various methods of centrifugation, variable cell count concentrations, and lack of standardized outcome measures. Future studies should attempt to examine the integral factors necessary for tissue regeneration and renewal including stem cells, growth factors and a biologic scaffold. | Arianna L Gianakos Li Sun Jay N Patel Donald M Adams Frank A Liporace | 2017 | World Journal of Orthopedics2017，8，6： | 5 |
| 4 | Analysis of a Successful Immune Response against Hepatitis C Virus显示文摘 | Stewart Cooper Ann L Erickson Erin J Adams Joe Kansopon Amy J Weiner David Y Chien Michael Houghton Peter Parham Christopher M Walker | 1999 | Immunity1999，，4： | 3 |
| 5 | The Stroke Outcomes and Neuroimaging of Intracranial Atherosclerosis (SONIA) Trial显示文摘 | E Feldmann J L. Wilterdink A Kosinski M Lynn M I. Chimowitz J Sarafin H H. Smith F Nichols J Rogg H J. Cloft L Wechsler J Saver S R. Levine C Tegeler R Adams M Sloan | 2007 | Neurology2007，，24： | 2 |
| 6 | Leptin receptor and neuropeptide Y gene expression in the sheep brain显示文摘 | Williams L M Adam C L Mercer J C | 1999 | Journal of Neuroendocrinology1999，11，： | 1 |
| 7 | The assessment of trust orientation显示文摘 | Couch L L Adams J M Jones W H | 1996 | Journal of Personality Assessment1996，67，2： | 1 |
| 8 | Central pontinemyelinolysis: a hitherto undescribed disease occurring in alcoholic and malnourished patients 显示文摘 | Adams R D Victor M Mancall E L | 1959 | AMA Arch Neurol Psychiatry1959，81，4： | 1 |
| 9 | miR-200expression regulates epithelial-to-mesenchymal transition in bladder cancer cells and reverses resistance to epidermal growth factor receptor therapy显示文摘 | Adam L Zhong M Choi W | 2009 | Clin Cancer Res2009，15，16： | 1 |
| 10 | Monoclonal antibody therapy of cancer显示文摘 | Adams G P Weiner L M | 2005 | Nat Biotechnol2005，23，9： | 1 |
| 11 | Tumor growth inhibition, apoptosis, and Bel-2 down-regulation of MCF-7ras tumors by sodium phenylacetate and tamoxifen combination 显示文摘 | Adam L Crepin M Israel L | 1997 | Cancer Res1997，57，6： | 1 |
| 12 | Rindopepimut: a promising im- munotherapeutie for the treatment of glioblastoma multiforme 显示文摘 | ADAM M S QI J L JOHN H S | 2014 | Immunotherapy2014，6，6： | 1 |
| 13 | Analytical models of adhesively bonded joints-Part I:literature survey显示文摘 | da Silva L F M das Neves P J C Adams R D | 2009 | International Journal of Adhesion and Adhesives2009，29，3： | 1 |
| 14 | Vasopressin: a new target for the treatment of heart failure显示文摘 | Craig R Lee Michael L Watkins J.Herbert Patterson Wendy Gattis Christopher M O'Connor Mihai Gheorghiade Kirkwood F Adams | 2003 | American Heart Journal2003，，1： | 1 |
| 15 | ACC/AHA2007 Guidelines for the Management of Patients With Unstable Angina/Non-ST-Elevation Myocardial Infarction显示文摘 | Anderson J L Adams C D Antman E M | 2007 | Journal of the American College of Cardiology2007，50，7： | 1 |
| 16 | Variability in root production, phenology, and turnover rate among 12 temperate tree species 显示文摘 | MCCORMACK M L ADAMS T S SMITHWICK E A | 2014 | Ecology2014，95，8： | 1 |
| 17 | Salad bars and fi'uit and vegetable consumption in elementary schools: A plate waste study 显示文摘 | ADAMS M A PELLETIER R L ZIVE M M | 2005 | Journal of the American Dietetic Association2005，105，11： | 1 |
| 18 | bcl-2 gene promotes haemopoietic cell survival and cooperates with c-myc to immortalize pre-B cells显示文摘 | Cory S Adams J M | 1998 | Nature1998，335，89： | 1 |
| 19 | Voluntary disclosure in anemerging eapital market显示文摘 | HOSSAIN M TAN L M ADAMS M | 1994 | International Journal of Accounting1994，29，： | 1 |
| 20 | Prospective randomized controlled trial of an inframedullarynail versus dynamic screw and plate for intertrochanterie frac-ture of femur显示文摘 | ADAMS C L ROBINSON C M COURT-BROWN C M etal | 2001 | Orthop Trauma2001，15，6： | 1 |
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