651
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Ahmad S, Perkins T, Vlachaki M. SU-GG-T-411: Impact of Respiratory Gating Using 4DCT On TCP, NTCP, TI, and UTCP in Patients with Thoracic Malignancies. Med Phys 2008. [DOI: 10.1118/1.2962159] [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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652
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Ali J, Akhtar N, Sultana Y, Baboota S, Ahmad S. Thin-layer chromatographic analysis of psoralen in babchi (Psoralea corylifolia) oil. ACTA CHROMATOGR 2008. [DOI: 10.1556/achrom.20.2008.2.12] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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653
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Gabrish H, Perkins T, Herman T, Vlachaki M, Ahmad S. SU-GG-T-521: Tissue Heterogeneity Corrections for Thoracic Malignancies: A Dosimetric Evaluation. Med Phys 2008. [DOI: 10.1118/1.2962270] [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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654
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Guo B, Liu Y, Cheng C, Ahmad S, Papanikolaou N. SU-GG-T-346: Accurate Simulation for Therapeutic Protons Range-Energy and Range-Density Tables. Med Phys 2008. [DOI: 10.1118/1.2962098] [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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655
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Chen Y, Ahmad S. SU-GG-T-333: Neutron Yield and Angular Distribution From the 250 MeV Proton Interactions in Water: A Geant4 Monte Carlo Study. Med Phys 2008. [DOI: 10.1118/1.2962085] [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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656
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Hughes S, McClelland J, Chandler A, Adams M, Boutland J, Withers D, Ahmad S, Blackall J, Tarte S, Hawkes D, Landau D. A Comparison of Internal Target Volume Definition by Limited Four-dimensional Computed Tomography, the Addition of Patient-specific Margins, or the Addition of Generic Margins when Planning Radical Radiotherapy for Lymph Node-positive Non-small Cell Lung Cancer. Clin Oncol (R Coll Radiol) 2008; 20:293-300. [DOI: 10.1016/j.clon.2007.12.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2007] [Revised: 11/20/2007] [Accepted: 12/03/2007] [Indexed: 10/22/2022]
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657
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Potluri R, Fujisawa T, Hewett P, Ahmad S, Chudasama K, Cudmore M, Ahmed A. ANGIOPOIETINS MEDIATE MONOCYTE ADHESION TO ENDOTHELIAL CELLS AND HAVE PRO-INFLAMMATORY ACTIONS INDEPENDENT OF VEGF. ATHEROSCLEROSIS SUPP 2008. [DOI: 10.1016/s1567-5688(08)70194-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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658
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Khan ZU, Ahmad S, Theyyathel A. Detection of Aspergillus fumigatus-specific DNA, (1–3)-β-d-glucan and galactomannan in serum and bronchoalveolar lavage specimens of experimentally infected rats. Mycoses 2008; 51:129-35. [DOI: 10.1111/j.1439-0507.2007.01461.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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659
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Mokaddas E, Ahmad S, Samir I. Secular trends in susceptibility patterns of Mycobacterium tuberculosis isolates in Kuwait, 1996-2005. Int J Tuberc Lung Dis 2008; 12:319-325. [PMID: 18284839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023] Open
Abstract
OBJECTIVE To determine the incidence and trends of drug resistance among all Mycobacterium tuberculosis strains isolated during a 10-year period in Kuwait. DESIGN Drug susceptibility data for M. tuberculosis isolates recovered from all pulmonary and extra-pulmonary tuberculosis (TB) patients in Kuwait from January 1996 to December 2005 were collected and analysed. Patients were divided into Kuwaiti nationals and expatriates. Prior treatment status was not recorded. RESULTS From 1996 to 2005, 5399 non-repetitive culture-positive TB cases (56% from pulmonary sites and 44% from extra-pulmonary sites) among 917 (17%) Kuwaiti nationals and 4482 (83%) expatriates were identified throughout Kuwait. Overall resistance rates were as follows: any drug 12.5%, isoniazid (INH) 9.1%; rifampicin (RMP) 1.1%, ethambutol (EMB) 2.0%, streptomycin 4.3% and multidrug resistance (MDR) 0.9%. The resistance rates over the 10-year period remained nearly same. However, significant differences were noted in resistance rates for RMP and MDR among pulmonary vs. extra-pulmonary cases and for any drug, INH and EMB among isolates from Kuwaiti vs. expatriate patients. CONCLUSIONS Moderate and stable single drug resistance (<10%) and low MDR rates (<1%) were found among TB cases in Kuwait. These findings highlight the importance of ongoing control measures to limit the development and spread of drug-resistant M. tuberculosis in Kuwait.
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660
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Ahmad S, Cathy D, Sheikh M, Sweeney P. Retroperitoneal extra-adrenal paraganglioma: a rare but important diagnosis. Ir J Med Sci 2008; 178:211-4. [DOI: 10.1007/s11845-007-0113-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2007] [Accepted: 12/18/2007] [Indexed: 10/22/2022]
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661
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Khan ZU, Ahmad S, Theyyathel AM. Diagnostic value of DNA and (1→3)-β-d-glucan detection in serum and bronchoalveolar lavage of mice experimentally infected with Fusarium oxysporum. J Med Microbiol 2008; 57:36-42. [DOI: 10.1099/jmm.0.47301-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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662
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Zargar AH, Ahmad S, Masoodi SR, Wani AI, Bashir MI, Laway BA, Shah ZA. Vitamin D status in apparently healthy adults in Kashmir Valley of Indian subcontinent. Postgrad Med J 2007; 83:713-6. [PMID: 17989271 DOI: 10.1136/pgmj.2007.059113] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
BACKGROUND The worldwide prevalence of vitamin D deficiency is reported to be high. OBJECTIVES To assess the vitamin D status in apparently healthy adults in Kashmir valley by measuring serum 25-hydroxyvitamin D (25 (OH) D). METHODS 92 healthy natives (64 men and 28 non-pregnant/non-lactating women, aged 18-40 years), residing in Kashmir for at least last 5 years and not having any suggestion of systemic disease, were selected for this study. The samples were collected throughout the year in both summer and winter months. Vitamin D deficiency was defined as a serum 25 (OH) D concentration of <50 nmol/l and graded as mild (25-50 nmol/l), moderate (12.5-25 nmol/l) and severe (<12.5 nmol/l). RESULTS Body mass index, total energy intake, and other nutritional parameters were comparable among subjects in different groups. Overall 76 (83%) of the subjects studied had vitamin D deficiency--25%, 33%, and 25% had mild, moderate, and severe deficiency, respectively. 49 of the 64 males and all but 1 of the 28 females were vitamin D deficient. The prevalence of vitamin D deficiency ranged from 69.6% in the employed group to 100% in the household group. Vitamin D deficiency was equally prevalent in subjects from rural and urban areas. Serum calcium and phosphorus values were comparable in subjects with and without vitamin D deficiency, while daily intake and urinary excretion of calcium were significantly lower in the former. Vitamin D deficient subjects had a significantly lower mean weekly exposure to sunlight. CONCLUSIONS In spite of abundant sunlight, healthy individuals in Kashmir valley are vitamin D deficient, particularly women. Serum 25 (OH) D concentrations are significantly related to sun exposure.
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663
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Yukihara EG, Mardirossian G, Mirzasadeghi M, Guduru S, Ahmad S. Evaluation of Al2O3:C optically stimulated luminescence (OSL) dosimeters for passive dosimetry of high-energy photon and electron beams in radiotherapy. Med Phys 2007; 35:260-9. [DOI: 10.1118/1.2816106] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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664
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Niimi Y, Kupersmith MJ, Ahmad S, Song J, Berenstein A. Cortical blindness, transient and otherwise, associated with detachable coil embolization of intracranial aneurysms. AJNR Am J Neuroradiol 2007; 29:603-7. [PMID: 18065506 DOI: 10.3174/ajnr.a0858] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Cortical visual loss is a rare complication of cerebral angiography without a definitive pathophysiology. Given the rapid increase in endovascular procedures used to treat cerebral aneurysms, we explored the prevalence of this complication and whether we could add to the understanding of this disorder. MATERIALS AND METHODS We performed a retrospective review of all procedures performed with the same contrast agent and detachable coils for treatment of posterior circulation aneurysms by 1 endovascular surgery service from 1996 to 2006. All patients were evaluated before and after each procedure by a team that included a neuro-ophthalmologist. RESULTS Of 137 intra-arterial treatment procedures performed for posterior circulation aneurysms, we identified 4 patients with cerebral vision loss complications. During the same time period, >500 aneurysms of the anterior cerebral circulation were treated without this complication. The visual field loss was unilateral in 2 and bilateral in 2 patients. Recovery was complete in 3 and almost normal in the fourth patient. The amount of contrast used and the duration of the procedure were similar among all patients. The 4 patients had no identified specific risk factors for developing procedure-associated occipital dysfunction, all 4 had undergone prior angiography, and 1 patient had undergone repeat coiling, without complication. CONCLUSION The 2.9% prevalence of cerebral visual loss with endovascular coil treatment of posterior circulation aneurysms is higher than that for angiography alone. Our patients recovered well with corticosteroid and intravenous hydration treatment. Recognizing the self-limiting nature of this problem might prevent an unneeded intervention.
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665
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Ahmad S, Prescott K, Vlachaki M. Surviving Fraction (SF2) and Clonogen Cell Density (CCD) are the Dominant Predictors of Tumor Control Probability (TCP) in High Grade Glioma. Int J Radiat Oncol Biol Phys 2007. [DOI: 10.1016/j.ijrobp.2007.07.2062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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666
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Naz S, Siddiqi R, Ahmad S, Rasool S, Sayeed S. Antibacterial Activity Directed Isolation of Compounds from Punica granatum. J Food Sci 2007; 72:M341-5. [DOI: 10.1111/j.1750-3841.2007.00533.x] [Citation(s) in RCA: 144] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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667
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Amoudy HA, Ahmad S, Thole JE, Mustafa AS. Demonstration of In vivo Expression of a Hypothetical Open Reading Frame (ORF-14) Encoded by the RD1 Region of Mycobacterium tuberculosis. Scand J Immunol 2007; 66:422-5. [PMID: 17850586 DOI: 10.1111/j.1365-3083.2007.01961.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Previously we identified a novel antigenic open reading frame (ORF), designated as ORF-14, on the RD1 region of Mycobacterium tuberculosis that was not originally predicted by Mahairas or by annotation of the M. tuberculosis H37 Rv genome. Here we show that anti-ORF-14 antibodies either from mice immunized with recombinant ORF-14 protein or isolated from serum samples from tuberculosis patients, react with a protein in culture filtrate but not in cytoplasmic or cell wall fractions from M. tuberculosis. Our data indicate that the ORF-14 protein is expressed as a secreted protein, representing one more secreted protein antigen not previously identified by genomics.
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668
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Maroof KA, Parashar P, Bansal R, Ahmad S. A study on hypertension among the bank employees of Meerut district of Uttar Pradesh. Indian J Public Health 2007; 51:225-227. [PMID: 18232162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023] Open
Abstract
Hypertension is becoming a public health emergency worldwide, especially in the developing countries. The job of bank employees is both sedentary in nature and accompanies high levels of mental stress, thereby at a higher risk of developing hypertension. The present cross-sectional study was conducted to find out the prevalence and the determinants of hypertension among bank employees of Meerut district. Prevalence of hypertension was found to be 69.5%. Hypertension was significantly associated with age 45 years, alcohol intake, waist circumference, body mass index and diabetes.
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669
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Chawla S, Ghosh AK, Avasthi DK, Kulriya P, Ahmad S. Functionalization of industrial polypropylene films via the swift-heavy-ion-induced grafting of glycidyl methacrylate. J Appl Polym Sci 2007. [DOI: 10.1002/app.26425] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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670
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671
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Abstract
A case of arthritis of the right knee caused by Candida lusitaniae in a 29-year-old intravenous drug abuser is described. The diagnosis was based on the isolation of C. lusitaniae from synovial fluid and was supported by the presence of C. lusitaniae-specific DNA and high levels of (1-3)-beta-d-glucan (122 pg ml-1) in the same specimen. While the isolate was susceptible to amphotericin B and fluconazole in vitro, treatment with amphotericin B was not very effective. The patient achieved complete cure with fluconazole therapy only after undergoing synovectomy. To the best of our knowledge, this is the first report of arthritis caused by C. lusitaniae in an intravenous drug user.
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672
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Hughes SR, Liong JL, Miah A, Ahmad S, Leslie M, Ross P, Harper P, Prendiville J, Rankin S, Landau D. Safety study of induction chemotherapy and synchronous radiotherapy (RT) and cetuximab in stage III non-small cell lung cancer (NSCLC): SCRATCH (Cohort I). J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.18032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
18032 Background: The addition of cetuximab can increase the efficacy of chemotherapy for advanced NSCLC. Concomitant cetuximab and RT is superior to RT alone for locally advanced squamous cell head & neck carcinoma. The SCRATCH study (cohort I) is a phase I study to assess the safety of synchronous cetuximab and radical RT in patients with Stage III NSCLC. Methods: Cohort I will contain 12 patients with inoperable stage III NSCLC. Inclusion criteria are performance status 0–1, adequate organ function, and disease encompassable within a radical RT volume. Exclusion criteria are previous malignancy, thoracic RT or treatment with EGFR targeted therapy. Patients receive platinum-based induction chemotherapy, followed by weekly intravenous cetuximab (initial dose 400mg/m2; maintenance dose 250mg/m2) and concomitant RT (64Gy/32fractions/45days). The primary end-point is toxicity. NCI Common Toxicity Criteria (CTC) V3.0 assessments are performed weekly during radiotherapy, and at regular follow-up visits. Results: Data from the first 9 patients is available. 2 patients stopped receiving cetuximab early due to toxicity. 1 experienced grade 3 fatigue following the initial dose, and the other declined further treatment after developing grade 2 skin toxicity. 2 patients have died, 1 from disease progression and 1 from thromboembolic disease. Both deaths occurred between months 2 and 4 post RT and were not attributed to the cetuximab therapy. Of the 7 living patients, 2 have survived 1 year (measured from the first day of induction chemotherapy). The maximum NCI CTC V3.0 scores are summarised in the table below. Conclusions: The results suggest that the early and late toxicities of synchronous cetuximab and radical RT are acceptable. Data on all 12 patients will be available by June 2007. SCRATCH Study cohorts II-IV follow on and will recruit sequentially. They will assess the safety of adding concomitant cisplatin (±vinorelbine) to cetuximab and radical RT. [Table: see text] No significant financial relationships to disclose.
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673
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Ahmad S, Vogds B, Vlachaki M. SU-FF-T-394: Surviving Fraction (SF2) Is the Dominant Predictor of Tumor Control Probability (TCP) in Prostate Cancer Patients Treated with IMRT and Dose Escalation. Med Phys 2007. [DOI: 10.1118/1.2761119] [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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674
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Johnson D, Ahmad S. SU-FF-T-143: Determination of Electron Output Factors Using An Empirical, Mathematical Model. Med Phys 2007. [DOI: 10.1118/1.2760802] [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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675
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Yukihara E, Mardirossian G, Mirzasadeghi M, Guduru S, Ahmad S. SU-FF-T-248: Improved Accuracy in Radiotherapy Dosimetry of High-Energy Photon and Electron Beam Using Optically Stimulated Luminescence. Med Phys 2007. [DOI: 10.1118/1.2760909] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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