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Waldemarson S, Krogh M, Alaiya A, Kirik U, Schedvins K, Auer G, Hansson KM, Ossola R, Aebersold R, Lee H, Malmström J, James P. Protein expression changes in ovarian cancer during the transition from benign to malignant. J Proteome Res 2012; 11:2876-89. [PMID: 22471520 DOI: 10.1021/pr201258q] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Epithelial ovarian carcinoma has in general a poor prognosis since the vast majority of tumors are genomically unstable and clinically highly aggressive. This results in rapid progression of malignancy potential while still asymptomatic and thus in late diagnosis. It is therefore of critical importance to develop methods to diagnose epithelial ovarian carcinoma at its earliest developmental stage, that is, to differentiate between benign tissue and its early malignant transformed counterparts. Here we present a shotgun quantitative proteomic screen of benign and malignant epithelial ovarian tumors using iTRAQ technology with LC-MALDI-TOF/TOF and LC-ESI-QTOF MS/MS. Pathway analysis of the shotgun data pointed to the PI3K/Akt signaling pathway as a significant discriminatory pathway. Selected candidate proteins from the shotgun screen were further confirmed in 51 individual tissue samples of normal, benign, borderline or malignant origin using LC-MRM analysis. The MRM profile demonstrated significant differences between the four groups separating the normal tissue samples from all tumor groups as well as perfectly separating the benign and malignant tumors with a ROC-area of 1. This work demonstrates the utility of using a shotgun approach to filter out a signature of a few proteins only that discriminates between the different sample groups.
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Antberg L, Cifani P, Sandin M, Levander F, James P. Critical Comparison of Multidimensional Separation Methods for Increasing Protein Expression Coverage. J Proteome Res 2012; 11:2644-52. [DOI: 10.1021/pr201257y] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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328
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Thomas R, Christopher DJ, Balamugesh T, James P, Thomas M. Endobronchial pulmonary cryptococcosis and tuberculosis in an immunocompetent host. Singapore Med J 2012; 53:e32-e34. [PMID: 22337198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Pulmonary cryptococcosis presenting as an endobronchial tumour-like growth has rarely been described. We report the case of a male patient with normal immune function who presented with a right upper lobe mass lesion. Bronchoscopy revealed a tumour-like growth that completely occluded the anterior segment of the right upper lobe bronchus. Bronchial biopsy and computed tomography-guided lung biopsy revealed Cryptococcus, and culture of lung biopsy specimen grew Cryptococcus neoformans and Mycobacterium tuberculosis. The patient responded clinically to amphotericin B, fluconazole and anti-tuberculous therapy. However, chest radiographic response was unremarkable. A presentation of pulmonary cryptococcosis and tuberculosis, along with endobronchial tumour-like growth in the same patient, is unusual and has not been previously described.
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Larsson S, Resjö S, Gomez MF, James P, Holm C. Characterization of the lipid droplet proteome of a clonal insulin-producing β-cell line (INS-1 832/13). J Proteome Res 2012; 11:1264-73. [PMID: 22268682 DOI: 10.1021/pr200957p] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Lipids are known to play a crucial role both in the normal control of insulin release and in the deterioration of β-cell function, as observed in type 2 diabetes. Despite this established dual role of lipids, little is known about lipid storage and handling in β-cells. Here, we isolated lipid droplets from oleate-incubated INS-1 832/13 cells and characterized the lipid droplet proteome. In a total of four rounds of droplet isolation and proteomic analysis by HPLC-MS/MS, we identified 96 proteins that were specific to droplets. The proteins fall into six categories based on function or previously observed localization: metabolism, endoplasmic reticulum/ribosomes, mitochondria, vesicle formation and transport, signaling, and miscellaneous. The protein profile reinforces the emerging picture of the lipid droplet as an active and dynamic organelle involved in lipid homeostasis and intracellular trafficking. Proteins belonging to the category mitochondria were highly represented, suggesting that the β-cell mitochondria and lipid droplets form a metabolic unit of potential relevance for insulin secretion.
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330
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Sanders S, Purcell S, Silva M, Palerme S, James P. Relationship between diagnosis and intervention in women with inherited bleeding disorders and menorrhagia. Haemophilia 2012; 18:e273-6. [PMID: 22221914 DOI: 10.1111/j.1365-2516.2011.02740.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Menorrhagia is the most common bleeding manifestation in women with inherited bleeding disorders. There is little known about whether the management of menorrhagia is altered in specific bleeding disorders. Optimizing treatment strategies for each specific diagnosis may improve quality of life in these women. This work aimed to look for a potential relationship between the specific diagnosis of an inherited bleeding disorder and the intervention required to control the menorrhagia. A retrospective chart review was performed for all women seen in the Kingston Women and Bleeding Disorders Clinic. Patients were categorized by diagnosis into two groups: Haemophilia carriers and all others. Treatment options were grouped into two categories: Medical or gynecological/surgical. Overall, 85.7% of haemophilia carriers required gynaecological surgical management, whereas only 31.4% of patients with all other diagnoses required gynaecological/surgical management (P = 0.012, Fisher's exact test). Therefore, carriers of Haemophilia were more likely to have a better outcome in treating their menorrhagia with gynaecological or surgical management compared with medical management. This information may 1 day help to guide treatment choice for menorrhagia in women with bleeding disorders.
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331
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James P, Marko-Varga GA. The International Proteomics Tutorial Programme--reaching out to the next generation proteome scientists. J Proteome Res 2012; 10:3311-2. [PMID: 21815689 DOI: 10.1021/pr200632u] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
One of the most critical functions of the various Proteomics organizations is the training of young scientists and the dissemination of information to the general scientific community. The education committees of the Human Proteome Organisation (HUPO) and the European Proteomics Association (EuPA) together with the other local proteomics associations are therefore launching a joint Tutorial Program to meet these needs. The level is aimed at Masters/PhD level students with good basic training in biology, biochemistry, mathematics and statistics. The Tutorials will consist of a review/teaching article with an accompanying talk slide presentation for classroom teaching. The Tutorial Program will cover core techniques and basics as an introduction to scientists new to the field. The entire series of articles and slides will be made freely available for teaching use at the Journals and Organizations homepages.
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Sawyer S, Boyle S, Young MA, Kovalenko S, Doherty R, McKinley J, Alsop K, Rehfisch M, Macaskill S, Ha A, Beshay V, Lindeman G, Harris M, Fox S, Mitchell G, James P. The contribution of LARGE genomic rearrangements of BRCA1 and BRCA2 gene mutations in breast and ovarian cancer families in a clinical cohort. Hered Cancer Clin Pract 2012. [PMCID: PMC3327262 DOI: 10.1186/1897-4287-10-s2-a89] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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333
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Lewis A, James P. An incidental finding of a large genomic deletion of BRCA1 on a molecular karyotype for a 5 year old child. Hered Cancer Clin Pract 2012. [PMCID: PMC3326939 DOI: 10.1186/1897-4287-10-s2-a73] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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334
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James P. Shells cracked. New Sci 2011. [DOI: 10.1016/s0262-4079(11)63091-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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335
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Cox J, M.A.Heeren R, James P, Jorrin-Novo JV, Kolker E, Levander F, Morrice N, Picotti P, Righetti PG, Sánchez JC, Turck CW, Zubarev R, Alexandre BM, Corrales FJ, Marko-Varga G, O'Donovan S, O'Neil S, Prechl J, Simões T, Weckwerth W, Penque D. Facing challenges in Proteomics today and in the coming decade: Report of Roundtable Discussions at the 4th EuPA Scientific Meeting, Portugal, Estoril 2010. J Proteomics 2011; 75:4-17. [DOI: 10.1016/j.jprot.2011.04.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2011] [Accepted: 04/22/2011] [Indexed: 12/17/2022]
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336
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Corthals GL, Dunn M, James P, Gil C, Penque D, Albar JP, Andrén P, Rabilloud T, Marko-Varga G. The transition of the European Proteomics Association into the future. J Proteomics 2011; 75:18-22. [DOI: 10.1016/j.jprot.2011.06.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2011] [Accepted: 06/20/2011] [Indexed: 10/18/2022]
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337
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Stella R, Cifani P, Peggion C, Hansson K, Lazzari C, Bendz M, Levander F, Sorgato MC, Bertoli A, James P. Relative Quantification of Membrane Proteins in Wild-Type and Prion Protein (PrP)-Knockout Cerebellar Granule Neurons. J Proteome Res 2011; 11:523-36. [DOI: 10.1021/pr200759m] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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338
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Swisher-McClure S, Wang K, Hahn S, James P, Tochner Z, Both S. Adjuvant Radiotherapy (RT) for Thymoma: A Dosimetric Comparison of Photon and Proton Based Treatment Techniques. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.1576] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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339
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Jameson SS, Dowen D, James P, Serrano-Pedraza I, Reed MR, Deehan DJ. The burden of arthroscopy of the knee. ACTA ACUST UNITED AC 2011; 93:1327-33. [DOI: 10.1302/0301-620x.93b10.27078] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Arthroscopy of the knee is one of the most commonly performed orthopaedic procedures worldwide. Large-volume outcome data have not previously been available for English NHS patients. Prospectively collected admissions data, routinely collected on every English NHS patient, were analysed to determine the rates of complications within 30 days (including re-operation and re-admission), 90-day symptomatic venous thromboembolism and all-cause mortality. There were 301 701 operations performed between 2005 and 2010 – an annual incidence of 9.9 per 10 000 English population. Of these, 16 552 (6%) underwent ligament reconstruction and 106 793 (35%) underwent meniscal surgery. The 30-day re-admission rate was 0.64% (1662) and 30-day wound complication rate was 0.26% (677). The overall 30-day re-operation rate was 0.40% (1033) and the 90-day pulmonary embolism rate was 0.08% (230), of which six patients died. 90-day mortality was 0.02% (47). Age < 40 years, male gender and ligament reconstruction were significantly associated with an increased rate of 30-day re-admission and unplanned re-operation. In addition, a significant increase in 30-day admission rates were seen with Charlson comorbidity scores of 1 (p = 0.037) and ≥ 2 (p < 0.001) compared with scores of 0, and medium volume units compared with high volume units (p < 0.001). Complications following arthroscopy of the knee are rare. It is a safe procedure, which in the majority of cases is performed as day case surgery. These data can be used for quality benchmarking, in terms of consent, consultant re-validation and individual unit performance.
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340
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James P. The International Proteomics Tutorial Programme (IPTP): a teaching tool box for the proteomics community. Proteomics 2011; 11:3596-7. [PMID: 21898913 DOI: 10.1002/pmic.201100374] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2011] [Accepted: 07/11/2011] [Indexed: 11/05/2022]
Abstract
The most critical functions of the various proteomics organisations are the training of young scientists and the dissemination of information to the general scientific community. The education committees of the Human Proteome Organisation (HUPO) and the European Proteomics Association (EuPA) together with their national counterparts are therefore launching the International Proteomics Tutorial Programme to meet these needs. The programme is being led by Peter James (Sweden), Thierry Rabilloud (France) and Kazuyuki Nakamura (Japan). It involves collaboration between the leading proteomics journals: Journal of Proteome Research, Journal of Proteomics, Molecular and Cellular Proteomics, and Proteomics. The overall level is aimed at Masters/PhD level students who are starting out their research and who would benefit from a solid grounding in the techniques used in modern protein-based research. The tutorial program will cover core techniques and basics as an introduction to scientists new to the field. At a later stage the programme may be expanded with a series of more advanced topics focussing on the application of proteomics techniques to biological problem solving. The entire series of articles and slides will be made freely available for teaching use at the Journals and Organisations homepages and at a special website, www.proteomicstutorials.org.
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341
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Blakey K, Feltbower R, Parslow R, James P, Pozo BG, Stiller C, Vincent T, Norman P, McKinney P, Murphy M, Craft A, McNally R. P1-96 Primary bone cancer in 0-49 year olds in great britain, 1980-2005 and fluoride in drinking water: a case of inequalities? Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976c.89] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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342
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Blakey K, Feltobower R, Parslow R, James P, Pozo BG, Stiller C, Vincent T, Norman P, McKinney P, Murphy M, Craft A, McNally R. P1-97 Demographic analysis of osteosarcoma and ewing sarcoma family of tumours in 0-49 year olds in Great Britain, 1980-2005: a small-area approach. Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976c.90] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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343
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Prasad R, Ahuja RC, Singhal S, Srivastava AN, James P, Kesarwani V, Singh D. A case-control study of bidi smoking and bronchogenic carcinoma. Ann Thorac Med 2011; 5:238-41. [PMID: 20981185 PMCID: PMC2954379 DOI: 10.4103/1817-1737.69116] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2010] [Accepted: 07/07/2010] [Indexed: 01/09/2023] Open
Abstract
OBJECTIVE: To evaluate the risks imposed by tobacco smoking, in particular, bidi smoking, in the development of lung cancer. METHODS: Two hundred eighty-four histologically confirmed patients of bronchogenic carcinoma and 852 controls matched for age, sex, and socioeconomic status were interviewed according to a predesigned questionnaire. Effects of individual variables defining the various aspects of tobacco smoking, in particular, bidi smoking, were assessed using logistic regression models. RESULTS: 81.3% cases of bronchogenic carcinoma were ever smokers as compared with 42.2% among controls. The odd ratios for ever smoking, bidi smoking, and cigarette smoking were 5.9 (confidence interval [CI] 4.3, 8.4), 6.1 (CI 4.3, 8.7), and 5.3 (CI 2.7, 10.4), respectively. CONCLUSION: Bidi smoking poses a very high risk for lung cancer even more than that of cigarette smoking.
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344
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Jameson SS, Lees D, James P, Serrano-Pedraza I, Partington PF, Muller SD, Meek RMD, Reed MR. Lower rates of dislocation with increased femoral head size after primary total hip replacement. ACTA ACUST UNITED AC 2011; 93:876-80. [DOI: 10.1302/0301-620x.93b7.26657] [Citation(s) in RCA: 157] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Increased femoral head size may reduce dislocation rates following total hip replacement. The National Joint Registry for England and Wales has highlighted a statistically significant increase in the use of femoral heads ≥ 36 mm in diameter from 5% in 2005 to 26% in 2009, together with an increase in the use of the posterior approach. The aim of this study was to determine whether rates of dislocation have fallen over the same period. National data for England for 247 546 procedures were analysed in order to determine trends in the rate of dislocation at three, six, 12 and 18 months after operation during this time. The 18-month revision rates were also examined. Between 2005 and 2009 there were significant decreases in cumulative dislocations at three months (1.12% to 0.86%), six months (1.25% to 0.96%) and 12 months (1.42% to 1.11%) (all p < 0.001), and at 18 months (1.56% to 1.31%) for the period 2005 to 2008 (p < 0.001). The 18-month revision rates did not significantly change during the study period (1.26% to 1.39%, odds ratio 1.10 (95% confidence interval 0.98 to 1.24), p = 0.118). There was no evidence of changes in the coding of dislocations during this time. These data have revealed a significant reduction in dislocations associated with the use of large femoral head sizes, with no change in the 18-month revision rate.
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345
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Fernandez C, Schuhmann K, Herzog R, Fielding B, Frayn K, Shevchenko A, James P, Holm C, Ström K. Altered desaturation and elongation of fatty acids in hormone-sensitive lipase null mice. PLoS One 2011; 6:e21603. [PMID: 21738729 PMCID: PMC3126817 DOI: 10.1371/journal.pone.0021603] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2010] [Accepted: 06/03/2011] [Indexed: 01/10/2023] Open
Abstract
Background Hormone-sensitive lipase (HSL) is expressed predominantly in adipose tissue, where it plays an important role in catecholamine-stimulated hydrolysis of stored lipids, thus mobilizing fatty acids. HSL exhibits broad substrate specificity and besides acylglycerides it hydrolyzes cholesteryl esters, retinyl esters and lipoidal esters. Despite its role in fatty acid mobilization, HSL null mice have been shown to be resistant to diet-induced obesity. The aim of this study was to define lipid profiles in plasma, white adipose tissue (WAT) and liver of HSL null mice, in order to better understand the role of this multifunctional enzyme. Methodology/Principal Findings This study used global and targeted lipidomics and expression profiling to reveal changed lipid profiles in WAT, liver and plasma as well as altered expression of desaturases and elongases in WAT and liver of HSL null mice on high fat diet. Decreased mRNA levels of stearoyl-CoA desaturase 1 and 2 in WAT were consistent with a lowered ratio of 16∶1n7/16∶0 and 18∶1n9/18∶0 in WAT and plasma. In WAT, increased ratio of 18∶0/16∶0 could be linked to elevated mRNA levels of the Elovl1 elongase. Conclusions This study illustrates the importance of HSL for normal lipid metabolism in response to a high fat diet. HSL deficiency greatly influences the expression of elongases and desaturases, resulting in altered lipid profiles in WAT, liver and plasma. Finally, altered proportions of palmitoleate, a recently-suggested lipokine, in tissue and plasma of HSL null mice, could be an important factor mediating and contributing to the changed lipid profile, and possibly also to the decreased insulin sensitivity seen in HSL null mice.
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346
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Moniruzzaman S, Hägerhed Engman L, James P, Sigsgaard T, Thorne PS, Sundell J, Bornehag CG. Levels of endotoxin in 390 Swedish homes: determinants and the risk for respiratory symptoms in children. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2011; 22:22-36. [PMID: 21707246 DOI: 10.1080/09603123.2011.588322] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Endotoxins are microbiological agents which ubiquitously exist in an indoor environment, and are believed to be causal agents for a number of diseases. This study investigated the indoor levels and determinants of endotoxins and their impact on asthma and allergy diseases among Swedish pre-school children. House dust samples from 390 homes of 198 case children with asthma and allergy and 202 healthy control children were collected in the Dampness Building and Health (DBH) study. House dust endotoxin levels in the child's bedroom and living rooms ranged from 479-188,000 EU/g dust and from 138-942,000 EU/g dust, respectively. Pet-keeping and agricultural activities were significantly associated with the higher endotoxin concentration levels in indoor dust. Endotoxins in theindoor environment did not associate to asthma and allergy diseases in the children. However, we found an association between endotoxins and the presence of disease symptoms in the sub-group of families without indoor pets.
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347
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Olsson N, Wingren C, Mattsson M, James P, O'Connell D, Nilsson F, Cahill DJ, Borrebaeck CAK. Proteomic analysis and discovery using affinity proteomics and mass spectrometry. Mol Cell Proteomics 2011; 10:M110.003962. [PMID: 21673276 PMCID: PMC3205851 DOI: 10.1074/mcp.m110.003962] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Antibody-based microarrays are a rapidly evolving affinity-proteomic methodology that recently has shown great promise in clinical applications. The resolution of these proteomic analyses is, however, directly related to the number of data-points, i.e. antibodies, included on the array. Currently, this is a key bottleneck because of limited availability of numerous highly characterized antibodies. Here, we present a conceptually new method, denoted global proteome survey, opening up the possibility to probe any proteome in a species-independent manner while still using a limited set of antibodies. We use context-independent-motif-specific antibodies directed against short amino acid motifs, where each motif is present in up to a few hundred different proteins. First, the digested proteome is exposed to these antibodies, whereby motif-containing peptides are enriched, which then are detected and identified by mass spectrometry. In this study, we profiled extracts from human colon tissue, yeast cells lysate, and mouse liver tissue to demonstrate proof-of-concept.
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348
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Dimofte A, James P, Kassaee A, McDonough J, Tochner Z. SU-E-T-826: Dosimetric Comparison of Intensity-Modulated Proton Therapy and 3D Proton Radiotherapy with Passively Scattered Beams for Primary Prostate Cancer. Med Phys 2011. [DOI: 10.1118/1.3612790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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349
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Whitcomb HA, Tamura K, Ben-Joseph E, Cromley E, Puett R, Melly S, James P, Laden F, Troped PJ. Factorial Validity of a Neighborhood Walkability Scale for Older Adults. Med Sci Sports Exerc 2011. [DOI: 10.1249/01.mss.0000401570.81432.7b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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350
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Stella R, Biancotto G, Krogh M, Angeletti R, Pozza G, Sorgato MC, James P, Andrighetto I. Protein expression changes in skeletal muscle in response to growth promoter abuse in beef cattle. J Proteome Res 2011; 10:2744-57. [PMID: 21425879 DOI: 10.1021/pr101255c] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The fraudulent treatment of cattle with growth promoting agents (GPAs) is a matter of great concern for the European Union (EU) authorities and consumers. It has been estimated that 10% of animals are being illegally treated in the EU. In contrast, only a much lower percentage of animals (<0.5%) are actually found as being noncompliant by conventional analytical methods. Thus, it has been proposed that methods should be developed that can detect the use of the substances via the biological effects of these substances on target organs, such as the alteration of protein expression profiles. Here we present a study aimed at evaluating if a correlation exists between the treatment with GPAs and alterations in the two-dimensional electrophoresis (2DE) protein pattern obtained from the biceps brachii skeletal muscle from mixed-bred cattle. After image analysis and statistical evaluation, protein spots that differentiate between treated and control groups were selected for analysis by mass spectrometry. A set of proteins could be defined that accurately detect the use of glucocorticoids and β(2)-agonists as growth promoters through the changes caused in muscle differentiation. As a further validation, we repeated the analysis using an independent set of samples from a strain of pure-bred cattle and verified these proteins by Western blot analysis.
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