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| 1 | Physical activity after total knee arthroplasty: A critical review显示文摘Total knee arthroplasty(TKA) is the most commonly performed elective surgery in the United States. TKA typically improves functional performance and reduces pain associated with knee osteoarthritis. Little is known about the influence of TKA on overall physical activity levels. Physical activity, defined as 'any bodily movement produced by skeletal muscles that results in energy expenditure', confers many health benefits but typically decreases with endstage osteoarthritis. The purpose of this review is to describe the potential benefits(metabolic, functional, and orthopedic) of physical activity to patients undergoing TKA, present results from recent studies aimed to determine the effect of TKA on physical activity, and discuss potential sources of variability and conflicting results for physical activity outcomes. Several studies utilizing self-reported outcomes indicate that patients perceive themselves to be more physically active after TKA than they were before surgery. Accelerometry-based outcomes indicate that physical activity for patients after TKA remains at or below pre-surgical levels. Several different factors likely contributed to these variable results, including the use of different instruments, duration of follow-up, and characteristics of the subjects studied. Comparison to norms, however, suggests that daily physical activity for patients following TKA may fall short of healthy agematched controls. We propose that further study of the relationship between TKA and physical activity needs to be performed using accelerometry-based outcome measures at multiple post-surgical time points. | Roger J Paxton Edward L Melanson Jennifer E Stevens-Lapsley Cory L Christiansen | 2015 | World Journal of Orthopedics2015，6，8： | 5 |
| 2 | Dietary zinc and metallothionein on small intestinal disaccharidases activity in mice显示文摘AIM: To examine the effect of increasing dietary zinc (Zn) intake and the lack of metallothionein (MT) expression on activity of small intestinal disaccharidases. METHODS: MT-Ⅰ and Ⅱ knockout (MT-/-) and wild-type (MT+/+) female mice at 3.5 wk of age were randomly fed with a diet containing 2 (2 Zn), 15 (15 Zn) or 50 (50 Zn) mg Zn/kg (n = 8/group/genotype) for 5 wk. Small intestinal segments (duodenum, jejunum and ileum) were collected and either fixed in 10% formalin for histological analysis or snap frozen in liquid nitrogen for sucrase, lactase and maltase activity analyses.RESULTS: Plasma Zn was significantly (P < 0.05) lower (33%) in MT-/- compared with MT+/+ mice fed the 2 Zn diet. Villus height and crypt depth were increased by approximately 15% in MT+/+ mice compared with MT-/- mice. Duodenal disaccharidase activities were significantly higher in MT+/+ compared with MT-/- mice particularly in those fed the 2 Zn diet. For the 50 Zn diet, jejunal sucrase and lactase activities were significantly higher in MT-/- (13 313 ± 2314; 4107 ± 364 μmol glucose/well/min/g tissue, respectively) compared with MT+/+ mice (7054 ± 608; 1818 ± 174). Similarly, ileal lactase activities were higher in MT-/- (1480 ± 192) compared with MT+/+ (629 ± 353) mice particularly those fed the 2 Zn diet. CONCLUSION: Increasing dietary Zn has little effect on disaccharidases activity in MT wild-type mice. The presence of MT may enhance morphological and functional development of the gut. | Cuong D Tran Johanna Cool Cory J Xian | 2011 | World Journal of Gastroenterology2011，17，3： | 2 |
| 3 | The Bcl-2 apoptotic switch in cancer development and therapy显示文摘 | ADAMS J M CORY S | 2007 | Oncogene2007，26，9： | 1 |
| 4 | The Bcl-2 protein family:arbiters of cell survival显示文摘 | Adams J M Cory S | | 0，，5381： | 1 |
| 5 | Genotypic and phenotypic diversity of a baculovirus population within an individual insect host 显示文摘 | Cory J S Green B M Paul R K | 2005 | Journal of Invertebrate Pathology2005，89，2： | 1 |
| 6 | Framework for the incorporation of demand-side in a competitive electricity market显示文摘 | Strbac G Farmer E D Cory B J | 1996 | IEE Proceedings-Generation Transmission and Distribution1996，143，3： | 1 |
| 7 | Revenue reconciled optimal pricing of transmission services 显示文摘 | Farmer E D Cory B J | 1996 | IEEE Transactions on Power Systems1996，11，14： | 1 |
| 8 | The bcl-2 family:regulators of the cellular life or death switch 显示文摘 | Cory S Adams J M | 2002 | Nat Rev Cancer2002，2，9： | 1 |
| 9 | The Bcl-2 family:regulators of the cellular life-or-death switch显示文摘 | Cory S Adams J M | 2002 | Nat Rev Cancer2002，2，5： | 1 |
| 10 | Life-or-death decisions by the Bcl-2 protein family 显示文摘 | ADAMS J M CORY S | 2001 | Trends Bio Chem Sci2001，26，： | 1 |
| 11 | The Bcl-2 apoptotic switch in cancer development and therapy显示文摘 | Adams J M Cory S | | 0，，09： | 1 |
| 12 | The Bcl-2 apoptotic switch in cancer development and therapy显示文摘 | Adams J Cory S | 2007 | Oncogene2007，26，9： | 1 |
| 13 | The genome sequence and evolution of baculoviruses显示文摘 | HERNIOU E A OLSZEWSKI J A CORY J S | 2003 | Annu Rev Entomol2003，48，： | 1 |
| 14 | Use of an aqueous soluble tetrazolium/formazan assay for cell growth assays in culture显示文摘 | Cory A H Owen T C Barltrop J A | 1991 | Cancer Commun1991，3，7： | 1 |
| 15 | 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 |
| 16 | Killing cancer cells by flipping the Bcl-2/ Bax switch显示文摘 | Cory S Adams J | 2005 | Cancer Cell2005，8，1： | 1 |
| 17 | The Bcl-2 protein family:arbiters of cell sur-vival显示文摘 | Adams J M Corys S | 1998 | Science1998，281，5381： | 1 |
| 18 | Bcl-2 geng promotes haemopoietic cell survival and cooperates with c-myc to immortalize pre-B cells 显示文摘 | Vaux D L Cory S Adams J M | 1988 | Nature1988，335，： | 1 |
| 19 | Life-or-death Decisions by the Bcl-2 Protein Family显示文摘 | ADAMS J M CORY S | 2001 | Trends Biochem Sci2001，26，1： | 1 |
| 20 | Characterizing Dis- solved Organic Matter Using PARAFAC Modeling of Fluores- cence Spectroscopy A Comparison of Two Models显示文摘 | Fellman J B Miller M P Cory R M | 2009 | Environ- mental Science Technology2009，43，16： | 1 |
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