76
|
Harrold L, Reed G, Magner R, Shewade A, John A, Reiss W, Greenberg J, Kremer J. FRI0254 Comparative effectiveness of rituximab versus anti-tumor necrosis factor switching for rheumatoid arthritis patients. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2013-eular.1381] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
77
|
Kleinerman ES, Mary V, John A. Osteosarcoma: the state of affairs dictates a change. What do we know? ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2014; 804:vii-viii. [PMID: 25207354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
|
78
|
Stavrou A, Jolly L, Habgood A, John A, Hussel T, Blanchard A, Jenkins G. P144 Influenza infection affects the degree of fibrosis and apoptosis in the bleomycin mouse model. Thorax 2013. [DOI: 10.1136/thoraxjnl-2013-204457.294] [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]
|
79
|
Rummel K, John A, Sulek Z. Design principles for handmade electrical insulation of superconducting joints in W7-X. FUSION ENGINEERING AND DESIGN 2013. [DOI: 10.1016/j.fusengdes.2013.01.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
80
|
Pappas DA, John A, Kremer J, Reed G, Greenberg J, Shewade A, Solomon DH, Curtis JR. OP0005 Effect of Biologic Agents on Lipids and Cardiovascular Risk in Rheumatoid Arthritis Patients. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
81
|
Pappas DA, John A, Curtis JR, Kremer J, Reiss W, Shewade A, Silverman GJ, Greenberg J. FRI0222 Prevalence of low immunoglobulin levels and associations with rheumatoid arthritis factors. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.1349] [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]
|
82
|
Pappas D, John A, Greenberg J, Devenport J, Kremer J, Ogale S, Reed G, Saunders K, Curtis J. AB0524 Design characteristics of the corrona certain study: A US comparative effectiveness and biomarker study of rheumatoid arthritis biologic agents. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.524] [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]
|
83
|
Harrold L, John A, Reed G, Reiss W, Magner R, Chung C, Saunders K, Kremer J, Greenberg J. AB0551 The use and effectiveness of rituximab in patients with rheumatoid arthritis observational study: Corrona registry:. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
84
|
Despang F, Bernhardt A, Lode A, Dittrich R, Hanke T, Shenoy SJ, Mani S, John A, Gelinsky M. Synthesis and physicochemical,in vitroandin vivoevaluation of an anisotropic, nanocrystalline hydroxyapatite bisque scaffold with parallel-aligned pores mimicking the microstructure of cortical bone. J Tissue Eng Regen Med 2013; 9:E152-66. [DOI: 10.1002/term.1729] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2012] [Revised: 12/12/2012] [Accepted: 01/28/2013] [Indexed: 02/06/2023]
|
85
|
Van Eijk L, Swinkels DW, John A, Schwoebel F, Fliegert F, Summo L, Vauleon S, Laarakkers JM, Riecke K, Pickkers P. Randomized double-blind placebo-controlled PK/PD study on the effects of a single intravenous dose of the anti-hepcidin Spiegelmer NOX-H94 on serum iron during experimental human endotoxemia. Crit Care 2013. [PMCID: PMC3642571 DOI: 10.1186/cc12290] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
|
86
|
Firestone Baum C, John A, Srinivasan K, Harrison P, Kolomensky A, Monagas J, Cocjin J, Hyman PE. Colon manometry proves that perception of the urge to defecate is present in children with functional constipation who deny sensation. J Pediatr Gastroenterol Nutr 2013; 56:19-22. [PMID: 22922371 DOI: 10.1097/mpg.0b013e31826f2740] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
BACKGROUND AND OBJECTIVE Children with functional constipation often state an inability to sense an urge to defecate and/or inability to feel incontinence. We used colon manometry to assess whether there was a sensory abnormality in patients who denied sensation. METHODS A physician observed all of the colon manometries in the preceding 20 years, and included behavioral observations in the procedure reports. We reviewed the charts of these patients. RESULTS Of 150 subjects with normal manometry and a diagnosis of functional constipation, 56 volunteered that they had no urge to defecate or complained of abdominal pain. For all who denied sensation, the first high-amplitude propagating colonic contraction (HAPC) was associated with retentive posturing and facial grimaces. When queried, all reported they felt nothing. The examiner explained the HAPC was causing pain, and informed the child that the pain would resolve if they defecated. With subsequent HAPCs, every patient acknowledged an urge to defecate and successfully defecated. Most agreed that a similar pain sensation was present daily, but was misinterpreted to be abdominal pain. CONCLUSIONS Colon manometry may be useful not only for objective findings to discriminate neuromuscular disease from functional symptoms but also to understand psychological issues and aid in helping the child and family understand the maladaptive behaviors in functional constipation.
Collapse
|
87
|
Stavrou A, Jolly L, Habgood A, John A, Hussell T, Blanchard A, Jenkins G. S102 The Effect of Influenza Infection on Bleomycin Induced Pulmonary Fibrosis. Thorax 2012. [DOI: 10.1136/thoraxjnl-2012-202678.107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
88
|
Malek IA, King A, Sharma H, Malek S, Lyons K, Jones S, John A. The sensitivity, specificity and predictive values of raised plasma metal ion levels in the diagnosis of adverse reaction to metal debris in symptomatic patients with a metal-on-metal arthroplasty of the hip. ACTA ACUST UNITED AC 2012; 94:1045-50. [DOI: 10.1302/0301-620x.94b8.27626] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Plasma levels of cobalt and chromium ions and Metal Artefact Reduction Sequence (MARS)-MRI scans were performed on patients with 209 consecutive, unilateral, symptomatic metal-on-metal (MoM) hip arthroplasties. There was wide variation in plasma cobalt and chromium levels, and MARS-MRI scans were positive for adverse reaction to metal debris (ARMD) in 84 hips (40%). There was a significant difference in the median plasma cobalt and chromium levels between those with positive and negative MARS-MRI scans (p < 0.001). Compared with MARS-MRI as the potential reference standard for the diagnosis of ARMD, the sensitivity of metal ion analysis for cobalt or chromium with a cut-off of > 7 µg/l was 57%. The specificity was 65%, positive predictive value was 52% and the negative predictive value was 69% in symptomatic patients. A lowered threshold of > 3.5 µg/l for cobalt and chromium ion levels improved the sensitivity and negative predictive value to 86% and 74% but at the expense of specificity (27%) and positive predictive value (44%). Metal ion analysis is not recommended as a sole indirect screening test in the surveillance of symptomatic patients with a MoM arthroplasty. The investigating clinicians should have a low threshold for obtaining cross-sectional imaging in these patients, even in the presence of low plasma metal ion levels.
Collapse
|
89
|
Elhardello OA, John A, Khamis K. Overlooked particle of a peripheral venous cannula presenting as a foreign body in the subcutaneous tissue. JOURNAL OF EMERGENCY MEDICINE, TRAUMA AND ACUTE CARE 2012. [DOI: 10.5339/jemtac.2012.23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
|
90
|
Mitchell RJ, Fordham RA, John A. The annual diet of feral goats (Capra hircusL.) in lowland rimu-rata-kamahi forest on eastern Mount Taranaki (Mt Egmont). NEW ZEALAND JOURNAL OF ZOOLOGY 2012. [DOI: 10.1080/03014223.1987.10422988] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
|
91
|
Howarth FC, Qureshi MA, Hassan Z, Isaev D, Parekh K, John A, Oz M, Raza H, Adeghate E, Adrian TE. Contractility of ventricular myocytes is well preserved despite altered mechanisms of Ca2+ transport and a changing pattern of mRNA in aged type 2 Zucker diabetic fatty rat heart. Mol Cell Biochem 2011; 361:267-80. [PMID: 22009485 DOI: 10.1007/s11010-011-1112-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2011] [Accepted: 10/07/2011] [Indexed: 02/07/2023]
Abstract
There has been a spectacular rise in the global prevalence of type 2 diabetes mellitus and cardiovascular complications are the major cause of morbidity and mortality in diabetic patients. The objective of the study was to investigate ventricular myocyte shortening, intracellular Ca(2+) signalling and expression of genes encoding cardiac muscle proteins in the aged Zucker diabetic fatty (ZDF) rat. There was a fourfold elevation in non-fasting blood glucose in ZDF rats (478.43 ± 29.22 mg/dl) compared to controls (108.22 ± 2.52 mg/dl). Amplitude of shortening, time to peak (TPK) and time to half (THALF) relaxation of shortening were unaltered in ZDF myocytes compared to age-matched controls. Amplitude and THALF decay of the Ca(2+) transient were unaltered; however, TPK Ca(2+) transient was prolonged in ZDF myocytes (70.0 ± 3.2 ms) compared to controls (58.4 ± 2.3 ms). Amplitude of the L-type Ca(2+) current was reduced across a wide range of test potentials (-30 to +40 mV) in ZDF myocytes compared to controls. Sarcoplasmic reticulum Ca(2+) content was unaltered in ZDF myocytes compared to controls. Expression of genes encoding cardiac muscle proteins, membrane Ca(2+) channels, and cell membrane ion transport and intracellular Ca(2+) transport proteins were variously altered. Myh6, Tnnt2, Cacna2d3, Slc9a1, and Atp2a2 were downregulated while Myl2, Cacna1g, Cacna1h, and Atp2a1 were upregulated in ZDF ventricle compared to controls. The results of this study have demonstrated that preserved ventricular myocyte shortening is associated with altered mechanisms of Ca(2+) transport and a changing pattern of genes encoding a variety of Ca(2+) signalling and cardiac muscle proteins in aged ZDF rat.
Collapse
|
92
|
Hessel S, Gavrilova O, John A, Seidel A, Geyer J, Lampen A. The important role of BCRP for in vivo disposition of benzo[a]pyrene conjugates in the liver and intestine. Toxicol Lett 2011. [DOI: 10.1016/j.toxlet.2011.05.656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
93
|
Derbala MF, Amer AM, Almohanadi M, John A, Amin A, John A, Sharma M, Alkaabi SR, Al Dweik NZ, Pasic F, Yaqoob R, Butt MT, Shebl FM. Hepatitis C virus genotype 4 with normal transaminases: histological changes, schistosomiasis and response to treatment. J Viral Hepat 2011; 18:e258-62. [PMID: 21108700 PMCID: PMC3101275 DOI: 10.1111/j.1365-2893.2010.01403.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Among individuals with chronic hepatitis C virus (HCV) infection, approximately 30% of patients show persistently normal alanine aminotransferase (PNALT). Individuals with PNALT have been historically excluded from antiviral treatment. However, some studies have reported sudden worsening of disease in patients with PNALT, suggesting the need to treat such individuals. To evaluate this further, we compared fibrosis severity and response to treatment in patients with PNALT to patients with abnormal ALT. In addition, we investigated whether liver histology and schistosomiasis affect response to treatment differently in those with PNALT and abnormal ALT. A retrospective cohort study of 176 HCV-Genotype 4 (HCV-G4) patients treated with pegylated interferon (PEG-IFN) and ribavirin. Of 176 cases studied, 53 (30.1%) had normal ALT. Prevalence of pretreatment severe fibrosis, sustained virological response (SVR) and relapse were not significantly different in patients with PNALT (26%, 66% and 5.7% respectively) compared to those with abnormal ALT (32.5%, 60.7%, and 6.6% respectively). Multivariable logistic regression revealed that pretreatment ALT, pretreatment viral load, inflammation and schistosomiasis were not significantly associated with SVR [OR (95% CI), 0.75 (0.34-1.65); 0.92 (0.61-1.37); 1.64 (0.64-4.18); 0.90 (0.44-1.84) respectively]. Severe fibrosis was the only significant predictor of SVR [OR (95% CI), 0.38 (0.14-0.99)]. PNALT does not reflect the degree of fibrotic changes or predict SVR. Furthermore, schistosomiasis is a predictor of neither fibrosis nor poor response in patients with PNALT. Severe fibrosis is a strong and independent predictor of response to treatment. Therefore, it is important to treat individuals with PNALT levels regardless of schistosomiasis.
Collapse
|
94
|
Heyes G, Manolopoulos S, Massey P, John A, Southgate E, Zarkar A. 1222 poster A 3-D FIDUCIAL PHANTOM TO ASSESS END-TO-END TOLERANCE FOR IMAGE GUIDED RADIOTHERAPY TREATMENT VERIFICATION. Radiother Oncol 2011. [DOI: 10.1016/s0167-8140(11)71344-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
95
|
John AK, Al KS, John A, Singh R, Derbala M. Audit of state-funded antiviral treatment for chronic hepatitis C in Qatar. EASTERN MEDITERRANEAN HEALTH JOURNAL = LA REVUE DE SANTE DE LA MEDITERRANEE ORIENTALE = AL-MAJALLAH AL-SIHHIYAH LI-SHARQ AL-MUTAWASSIT 2010; 16:1121-1127. [PMID: 21218734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Hepatitis C virus (HCV) infection is a major public health problem in the Middle East. A database of 400 patients with chronic HCV in Qatar was retrospectively analysed: 242 patients underwent antiviral treatment, of whom 212 (87.6%) were naïve to treatment. The response to treatment and the predictors of response were studied. The largest group of patients were of Egyptian origin. The rate of sustained virological response (SVR) varied significantly between patients with HCV genotypes 2 or 3 (79.6%) and genotype 1 (45.6%) and 4 (the predominant genotype) (51.0%). Multivariate analysis showed that the independent predictors of SVR were age < 45 years, infection with genotypes 2 or 3, low fibrosis score on liver biopsy and naïve treatment status.
Collapse
|
96
|
John A, Al Kaabi S, John A, Singh R, Derbala M. Audit of state-funded antiviral treatment for chronic hepatitis C in Qatar. EASTERN MEDITERRANEAN HEALTH JOURNAL 2010. [DOI: 10.26719/2010.16.11.1121] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
97
|
Hessel S, John A, Seidel A, Lampen A. Multidrug resistance-associated proteins (MRPS) are involved in the detoxification of benzo[a]pyrene in the intestinal barrier. Toxicol Lett 2010. [DOI: 10.1016/j.toxlet.2010.03.383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
98
|
Parker SG, Oliver P, Pennington M, Bond J, Jagger C, Enderby PM, Curless R, Chater T, Vanoli A, Fryer K, Cooper C, Julious S, Donaldson C, Dyer C, Wynn T, John A, Ross D. Rehabilitation of older patients: day hospital compared with rehabilitation at home. A randomised controlled trial. Health Technol Assess 2009; 13:1-143, iii-iv. [PMID: 19712593 DOI: 10.3310/hta13390] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVES To test the hypotheses that older people and their informal carers are not disadvantaged by home-based rehabilitation (HBR) relative to day hospital rehabilitation (DHR) and that HBR is less costly. DESIGN Two-arm randomised controlled trial. SETTING Four trusts in England providing both HBR and DHR. PARTICIPANTS Clinical staff reviewed consecutive referrals to identify subjects who were potentially suitable for randomisation according to the defined inclusion criteria. INTERVENTIONS Patients were randomised to receive either HBR or DHR. MAIN OUTCOME MEASURES The primary outcome measure was the Nottingham Extended Activities of Daily Living (NEADL) scale. Secondary outcome measures included the EuroQol 5 dimensions (EQ-5D), Hospital Anxiety and Depression Scale (HADS), Therapy Outcome Measures (TOMs), hospital admissions and the General Health Questionnaire (GHQ-30) for carers. RESULTS Overall, 89 subjects were randomised and 42 received rehabilitation in each arm of the trial. At the primary end point of 6 months there were 32 and 33 patients in the HBR and DHR arms respectively. Estimated mean scores on the NEADL scale at 6 months, after adjustment for baseline, were not significantly in favour of either HBR or DHR [DHR 30.78 (SD 15.01), HBR 32.11 (SD 16.89), p = 0.37; mean difference -2.139 (95% CI -6.870 to 2.592)]. Analysis of the non-inferiority of HBR over DHR using a 'non-inferiority' limit (10%) applied to the confidence interval estimates for the different outcome measures at 6 months' follow-up demonstrated non-inferiority for the NEADL scale, EQ-5D and HADS anxiety scale and some advantage for HBR on the HADS depression scale, of borderline statistical significance. Similar results were seen at 3 and 12 months' follow-up, with a statistically significant difference in the mean EQ-5D(index) score in favour of DHR at 3 months (p = 0.047). At the end of rehabilitation, a greater proportion of the DHR group showed a positive direction of change from their initial assessment with respect to therapist-rated clinical outcomes; however, a lower proportion of HBR patients showed a negative direction of change and, overall, median scores on the TOMs scales did not differ between the two groups. Fewer patients in the HBR group were admitted to hospital on any occasion over the 12-month observation period [18 (43%) versus 22 (52%)]; however, this difference was not statistically significant. The psychological well-being of patients' carers, measured at 3, 6 and 12 months, was unaffected by whether rehabilitation took place at day hospital or at home. As the primary outcome measure and EQ-5D(index) scores at 6 months showed no significant differences between the two arms of the trial, a cost-minimisation analysis was undertaken. Neither the public costs nor the total costs at the 6-month follow-up point (an average of 213 days' total follow-up) or the 12-month follow-up point (an average of 395 days' total follow-up) were significantly different between the groups. CONCLUSIONS Compared with DHR, providing rehabilitation in patients' own homes confers no particular disadvantage for patients and carers. The cost of providing HBR does not appear to be significantly different from that of providing DHR. Rehabilitation providers and purchasers need to consider the place of care in the light of local needs, to provide the benefits of both kinds of services. Caution is required when interpreting the results of the RCT because a large proportion of potentially eligible subjects were not recruited to the trial, the required sample size was not achieved and there was a relatively large loss to follow-up. TRIAL REGISTRATION Current Controlled Trials ISRCTN71801032.
Collapse
|
99
|
John A, Fagondes S, Schwartz I, Azevedo A, Barrios P, Dalcin P, Barreto S, Giugliani R. 259 SLEEP EVALUATION IN PATIENTS WITH MUCOPOLYSACCHARIDOSIS TYPE VI. Sleep Med 2009. [DOI: 10.1016/s1389-9457(09)70261-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
100
|
John A, Wienemann G, Reese JP, Wellek A, Hagen BV, Dodel R, Tackenberg B, Balzer-Geldsetzer M. Longitudinale Studie zu Lebensqualität und Versorgung bei Patienten mit Multipler Sklerose. AKTUELLE NEUROLOGIE 2009. [DOI: 10.1055/s-0029-1238651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|