201
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Zhang W, Vallböhmer D, Yang D, Yun J, Press OA, Gordon M, Rhodes K, Sherrod A, Iqbal S, Lenz HJ. Genomic profile associated with clinical outcome of EGFR-expressing metastatic colorectal cancer patients treated with epidermal growth factor receptor (EGFR) inhibitor cetuximab. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.3557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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202
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Press OA, Zhang W, Yang DY, Yun J, Gordon M, Vallböhmer D, Rhodes KE, Iqbal S, Lenz HJ. Gender related survival differences associated with polymorphic variants of estrogen receptor beta (ERβ) and epidermal growth fact receptor (EGFR) in patients with metastatic colon cancer. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.3590] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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203
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Hendifar AE, Zhang W, Yang DY, Khoueiry AE, Iqbal S, Lenz HJ. Polymorphisms of transforming growth factor-β1 (TGF-β1) and recurrence in stage II and III colon cancer. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.3634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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204
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Gordon MA, Zhang W, Karaman M, Yun J, Press O, Rhodes K, Vallböhmer D, Iqbal S, Hacia J, Lenz HJ. Gene expression profiling associated with risk of recurrence in patients with colorectal cancer. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.3602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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205
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Yang DY, Vallböhmer D, Rhodes KE, Zhang W, Yun J, Press OA, Gordon M, Iqbal S, Danenberg KD, Lenz HJ. Molecular prognostic factors of irinotecan efficacy. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.3621] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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206
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Vallböhmer D, Zhang W, Gordon M, Yang DY, Yun J, Press OA, Rhodes KE, Iqbal S, Danenberg KD, Lenz HJ. Molecular determinants of cetuximab efficacy. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.3551] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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207
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Newman E, Chang RY, Potmesil M, Donahue B, Marcus SG, Hiotis SP, Iqbal S, Ryan T, Hochster HS, Muggia FM. Postoperative intraperitoneal (IP) 5’-fluoro-2’-deoxyuridine (FUDR) added to chemoradiation in patients curatively resected (R0) for locally advanced gastric and gastroesophageal junction (GEJ) adenocarcinoma. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.4163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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208
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Rhodes KE, Vallböhmer D, Zhang W, Yang DY, Yun J, Press O, Gordon M, Iqbal S, Lenz HJ. Molecular predictor of irinotecan (CPT-11) efficacy. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.3560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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209
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Davies AJ, Lee AM, Taylor C, Clear AJ, Goff LK, Iqbal S, Cuthbert-Heavens D, Calaminici M, Norton AJ, Lister TA, Fitzgibbon J. A limited role for TP53 mutation in the transformation of follicular lymphoma to diffuse large B-cell lymphoma. Leukemia 2005; 19:1459-65. [PMID: 15902285 DOI: 10.1038/sj.leu.2403802] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The role of TP53 mutation in transformation of follicular lymphoma (FL) to diffuse large B-cell lymphoma (t-FL) was examined in a panel of 91 lymph node biopsies derived from 29 patients pre- and post-transformation. The entire TP53 coding sequence was screened and immunocytochemistry performed to determine expression of p53 and its key regulator MDM2. A total of 10 mutations were detected in eight patients (28%), although none were present at FL diagnosis. Mutations were not detected solely at the time of transformation; in three patients, mutated TP53 arose in at least one antecedent FL sample (6 months, 2.5 years and 4 years prior to transformation). Loss of heterozygosity at the TP53 locus occurred in 2/20 informative patients (only in t-FL samples). p53 staining was positive in 82% (9/11) of available biopsies with a missense mutation, and negative in 71% (45/63) with wtTP53. MDM2 expression was significantly higher in t-FL samples (mean 72% positive; 95% confidence interval (95% CI) 68-76%) than FL (mean 58% positive; 95% CI 54-62%) (P<0.001) but did not correlate with TP53 status. TP53 mutation has only a limited role in the transformation of FL, exerting a heterogeneous influence upon phenotypic change. In contrast, dysregulation of MDM2 is frequent and may provide a more rational therapeutic target..
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210
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Odero MD, Grand FH, Iqbal S, Ross F, Roman JP, Vizmanos JL, Andrieux J, Laï JL, Calasanz MJ, Cross NCP. Disruption and aberrant expression of HMGA2 as a consequence of diverse chromosomal translocations in myeloid malignancies. Leukemia 2005; 19:245-52. [PMID: 15618963 DOI: 10.1038/sj.leu.2403605] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Chromosomal translocations that target HMGA2 at chromosome band 12q14 are seen in a variety of malignancies, notably lipoma, pleomorphic salivary adenoma and uterine leiomyoma. Although some HMGA2 fusion genes have been reported, several lines of evidence suggest that the critical pathogenic event is the expression of truncated HMGA2 isoforms. We report here the involvement of HMGA2 in six patients with myeloid neoplasia, dysplastic features and translocations or an inversion involving chromosome bands 12q13-15 and either 7p12, 8q22, 11q23, 12p11, 14q31 or 20q11. Breaks within or very close to HMGA2 were found in all six cases by molecular cytogenetic analysis, leading to overexpression of this gene as assessed by RT-PCR. Truncated transcripts consisting of HMGA2 exons 1-2 or exons 1-3 spliced to intron-derived sequences were identified in two patients, but were not seen in controls. These findings suggest that abnormalities of HMGA2 play an important and previously unsuspected role in myelodysplasia.
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211
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Quinn D, Levine A, Gorospe G, Lenz H, Mohrbacher A, Weber J, Iqbal S, Gill P, Tupule A. 157 Phase I trial of an antisense to vascular endothelial growth factor (VEGF-AS, Veglin) in relapsed and refractory malignancies. EJC Suppl 2004. [DOI: 10.1016/s1359-6349(04)80165-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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212
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Pegram M, Yeon CH, Ku N, Gottlieb C, Shepard M, Cossum P, John E, Iqbal S, Garcia A, Lenz HJ. Enzyme catalyzed therapeutic activation of NB1011 (N) selectively targets thymidylate synthase (TS)-overexpressing tumor cells: Phase I results. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.3144] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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213
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Mallik N, Zhang W, Yang DY, Iqbal S, Yun J, Press O, Gordon M, Lenz HJ. Polymorphisms in IL-8 and the GSTP1 are associated with survival of metastatic colorectal cancer patients treated with CPT-11. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.3606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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214
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Agafitei RD, Schneider S, Iqbal S, Yang D, Groshen S, Lenz HJ. Effect of celecoxib on neurotoxicity in patients with metastatic colorectal cancer treated with 5-FU/oxaliplatin (CIFOX). J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.3600] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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215
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Aparicio A, Iqbal S, Yang D, Groshen S, Park D, Garcia A, Lenz HJ. Pilot trial of 5-FU/oxaliplatin (CIFOX) for patients with metastatic colorectal cancer who progressed on 5-FU/LV/CPT-11 (IFL). J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.3773] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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216
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Iqbal S, Cole S, Yang D, Lara PN, Gumerlock PH, Shibata S, Synold T, Doroshow JH, Gandara D, Lenz HJ. Phase I study of PS-341 (bortezomib) with 5-fluorouracil/leucovorin (5-FU/LV) in advanced solid tumors: A California Cancer Consortium study. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.2057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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217
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Zhang W, Yun J, Press OA, Gordon M, Yang DY, Mallik N, Sherrod A, Iqbal S, Lenz HJ. Association of Cyclin D1 (CCND1) gene A870G polymorphism and clinical outcome of EGFR-positive metastatic colorectal cancer patients treated with epidermal growth factor receptor (EGFR) inhibitor cetuximab (C225). J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.3518] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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218
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Park DJ, Yun J, Yang DY, Iqbal S, Press O, Groshen S, Gordon M, Zhang W, Lenz HJ. Genomic profiling as predictor of toxicity in patients with advanced colorectal cancer treated with platinum-based chemotherapy. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.3627] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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219
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Atiq M, Iqbal S, Ibrahim S. Sengers disease: a rare association of hypertrophic cardiomyopathy and congenital cataracts. Indian J Pediatr 2004; 71:437-40. [PMID: 15163876 DOI: 10.1007/bf02725636] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Hypertrophic cardiomyopathy is an uncommon childhood cardiac disease and can be primary or secondary. Several systemic diseases are known to be associated with this entity. Senger's disease is a mitochondrial disorder causing congenital cataracts lactic acidosis and skeletal and cardiac myopathy. Diagnosis should be kept in mind when routine neonatal eye screening reveals absent red reflex. The authors report a case of Sengers disease and discuss the underlying pathogenetic mechanisms.
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220
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Mason HJ, Morton J, Garfitt SJ, Iqbal S, Jones K. Cytotoxic drug contamination on the outside of vials delivered to a hospital pharmacy. ACTA ACUST UNITED AC 2004; 47:681-5. [PMID: 14602675 DOI: 10.1093/annhyg/meg078] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
We recently carried out a study of two UK hospital pharmacy units preparing cytotoxic drugs using isolators that showed low level contamination on floor surfaces and disposable gloves worn by staff. It has been suggested that this level of contamination may be related to some level of contamination on the drug vials as delivered from manufacturers rather than leakage from the isolators. We have investigated the level of cytotoxic drug contamination on the external surfaces of the drug vials as delivered to a hospital pharmacy stores. We monitored 30, randomly chosen vials for the drugs cisplatin, carboplatin, cyclophosphamide, ifosfamide and methotrexate using well-established methods. A 0.5 m2 floor area directly in front of the shelves used for storing the cytotoxic drugs was also wipe sampled and the disposable gloves worn while wiping the vials for each drug were also analysed. A significant number of vials had a quantifiable level of external contamination. Levels of contamination up to 344 ng/vial were found. Levels of glove and floor contamination for some drugs were found to be comparable with values found in our study of the clean rooms where the isolators were situated and the pharmacy staff prepared the cytotoxic drugs.
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221
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Abstract
Effects of malignancy on haemostasis have long been recognized. The role of coagulation factors, anticoagulants and fibrinolytic agents in cancer biology have emerged more recently. Thrombomodulin is a naturally occurring anticoagulant, expressed by numerous epithelial and lymphovascular tumour cells. It may have a role in tumour metastasis.
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222
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Luo M, Ramdahin S, Iqbal S, Pan Y, Jacobson K, Narayansingh MJ, Schroeder M, Brunham RC, Embree J, Plummer FA. High resolution sequence-based DPB1 typing identified two novel DPB1 alleles, DPB1*9401 and DPB1*9501, from a Kenyan population. TISSUE ANTIGENS 2003; 62:182-4. [PMID: 12890000 DOI: 10.1034/j.1399-0039.2003.00066.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Two novel DPB1 alleles, DPB1*9401 and DPB1*9501, were identified from a Kenyan population during sequence-based HLA-DPB1 typing. Molecular cloning and sequencing of multiple clones confirmed that one of the new DPB1 alleles is identical to DPB1*0402 at exon 2 except for a single nucleotide substitution (CGG -->TGG), changing codon 70 from Arg to Trp. The new allele has been named DPB1*9401. This is the first report of polymorphism at codon 70 of HLA-DPB1 alleles. New codon combinations have been identified in another novel DPB1 allele named DPB1*9501. The extensive diversity at DPB1 locus of this East African population is being revealed by high resolution sequence-based DPB1 typing.
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223
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Akhter P, Iqbal S, Orfi SD, Kawamura H, Ahmad N. Thorium concentration in Pakistani diet. HEALTH PHYSICS 2003; 84:784-787. [PMID: 12822589 DOI: 10.1097/00004032-200306000-00012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
To evaluate radiation doses due to ingestion of thorium activity by members of the public, baseline analytical data on thorium concentration in a typical Pakistani diet was generated. Food samples were collected from major districts/ cities of the country using the market basket method, and typical daily diets were prepared. Thorium concentration was determined by instrumental neutron activation analysis. It was found to vary from 1.6 ng g(-1) to 12 ng g(-1). The median value was 4.6 ng g(-1). This leads to median daily thorium intake of 2.7 microg d(-1). The geometric mean was 2.6 microg d(-1), which was 13% less than the ICRP value. Based on these measurements the average intake of 232Th activity was 10 mBq d(-1), and the average annual and committed effective doses for adults were estimated to be 8.8 x 10(-7) Sv y(-1) and 4.4 x 10(-5) Sv, respectively.
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224
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Anwari JS, Iqbal S. Antihistamines and potentiation of opioid induced sedation and respiratory depression. Anaesthesia 2003; 58:494-5. [PMID: 12694022 DOI: 10.1046/j.1365-2044.2003.03154_18.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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225
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Smith M, Iqbal S, Elliott TM, Everard M, Rowe BH. Corticosteroids for hospitalised children with acute asthma. Cochrane Database Syst Rev 2003; 2003:CD002886. [PMID: 12804441 PMCID: PMC6999806 DOI: 10.1002/14651858.cd002886] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND Systemic corticosteroids are used routinely in the management of children with severe acute asthma. There is a lack of consensus regarding the agent, dose and route of corticosteroid administration. OBJECTIVES To determine the benefit of systemic corticosteroids (oral, intravenous, or intramuscular) compared to placebo and inhaled steroids in acute paediatric asthma. SEARCH STRATEGY All controlled trials were identified from the Cochrane Airways Review Group Register, hand searching of respiratory journals, reference lists and contacts with experts and pharmaceutical companies. SELECTION CRITERIA Studies were included if they described a randomised controlled trial (RCT) involving children aged 1-18 years with severe acute asthma who received oral, inhaled, intravenous or intramuscular corticosteroids. Only studies in which patients required hospital admission were included. DATA COLLECTION AND ANALYSIS Two reviewers using a standard form extracted all data. All data, numeric calculations and graphic extrapolations were independently confirmed. MAIN RESULTS Seven trials were included with a total of 426 children studied (274 with oral prednisone vs. placebo, 106 with intravenous steroids vs placebo and 46 with nebulised budesonide vs prednisolone). A significant number of steroid treated children were discharged early after admission (>4 hours) with an OR of 7.00 (95% CI: 2.98 to 16.45) and NNT of 3 (95%CI: 2 to 8). The length of stay was shorter in the steroid groups with a WMD of -8.75 hours (95% CI: -19.23 to 1.74). There were no significant differences between groups in pulmonary function or oxygen saturation measurements. Children treated with steroids in hospital were less likely to relapse within one to three months with OR 0.19 (95%CI: 0.07 to 0.55) and NNT of 3 (95%CI: 2 to 7). The single small study that compared nebulised budesonide to oral prednisone failed to demonstrate equivalence or a difference between each therapy. REVIEWER'S CONCLUSIONS Systemic corticosteroids produce some improvements for children admitted to hospital with acute asthma. The benefits may include earlier discharge and fewer relapses. Inhaled or nebulised corticosteroids cannot be recommended as equivalent to systemic steroids at this time. Further studies examining differing doses and routes of administration for corticosteroids will clarify the optimal therapy.
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226
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227
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Iqbal S, Anderson TJ, Marson LP, Prescott RJ, Dixon JM, Miller WR. MIB-1 Assessments in breast cancers. Breast 2002; 11:252-6. [PMID: 14965676 DOI: 10.1054/brst.2002.0408] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The variability of MIB-1 measurements in breast cancer was assessed in histological sections from core and excision biopsies taken simultaneously in 13 cases and sequentially (with an intervening period of 2-3 weeks) in 17 cases. Results showed no significant differences in values between cores and sections, whether taken simultaneously or sequentially. Individual pairs of cores and sections occasionally demonstrated substantial differences. The mean ratio of MIB-1 scores between cores and sections was 0.97 [95% confidence interval (CI)=0.68-1.38]. However 95% confidence intervals for ratios within individuals were 0.14-6.68. Although the two samples can be equivalent on an average over numerous patients, they cannot be taken as equivalent within individuals. Severe heterogeneity complicates the assessment of MIB-1 in individual breast cancers and limits utility in monitoring changes in proliferation with treatment.
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228
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Khan LA, Khan SA, Iqbal S. Care of women in the Middle East. Saudi Med J 2001; 22:1034-5. [PMID: 11744982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023] Open
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229
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Sohal J, Chase A, Mould S, Corcoran M, Oscier D, Iqbal S, Parker S, Welborn J, Harris RI, Martinelli G, Montefusco V, Sinclair P, Wilkins BS, van den Berg H, Vanstraelen D, Goldman JM, Cross NC. Identification of four new translocations involving FGFR1 in myeloid disorders. Genes Chromosomes Cancer 2001; 32:155-63. [PMID: 11550283 DOI: 10.1002/gcc.1177] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The 8p11 myeloproliferative syndrome (EMS) is associated with three translocations, t(8;13)(p11;q12), t(8;9)(p11;q33), and t(6;8)(q27;p11), that fuse unrelated genes (ZNF198, CEP110, and FOP, respectively) to the entire tyrosine kinase domain of FGFR1. In all cases thus far examined (n = 10), the t(8;13) results in an identical mRNA fusion between ZNF198 exon 17 and FGFR1 exon 9. To determine if consistent fusions are also seen in the variant translocations, we performed RT-PCR on four cases and sequenced the products. For two patients with a t(8;9), we found that CEP110 exon 15 was fused to FGFR1 exon 9. For two patients with a t(6;8), we found that FOP exon 5 (n = 1) or exon 7 (n = 1) was fused to FGFR1 exon 9. To determine if FGFR1 might be involved in other myeloid disorders with translocations of 8p, we developed a two-color FISH assay using two differentially labeled PAC clones that flank FGFR1. Disruption of this gene was indicated in a patient with a t(8;17)(p11;q25) and Ph-negative chronic myeloid leukemia in association with systemic malignant mast cell disease, a patient with acute myeloid leukemia with a t(8;11)(p11;p15), and two cases with T-cell lymphoma, myeloproliferative disorder, and marrow eosinophilia with a t(8;12)(p11;q15) and ins(12;8)(p11;p11p21), respectively. For the patient with the t(8;11), the chromosome 11 breakpoint was determined to be in the vicinity of NUP98. We conclude that 1) all mRNA fusions in EMS result in splicing to FGFR1 exon 9 but breakpoints in FOP are variable, 2) two-color FISH can identify patients with EMS, and 3) the t(8;17)(p11;q25), t(8;11)(p11;p15), t(8;12)(p11;q15), and ins(12;8)(p11;p11p21) are novel karyotypic changes that most likely involve FGFR1.
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MESH Headings
- Chromosomes, Human, Pair 11/genetics
- Chromosomes, Human, Pair 12/genetics
- Chromosomes, Human, Pair 17/genetics
- Chromosomes, Human, Pair 6/genetics
- Chromosomes, Human, Pair 8/genetics
- Chromosomes, Human, Pair 9/genetics
- Female
- Humans
- In Situ Hybridization, Fluorescence/methods
- Karyotyping
- Male
- Myeloproliferative Disorders/genetics
- Receptor Protein-Tyrosine Kinases/genetics
- Receptor, Fibroblast Growth Factor, Type 1
- Receptors, Fibroblast Growth Factor/genetics
- Reverse Transcriptase Polymerase Chain Reaction
- Translocation, Genetic/genetics
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230
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Dixon J, Renshaw L, Iqbal S, Sahni S, Miller W. Evaluation of long term recurrence rate following breast conserving surgery after neoadjuvant endocrine therapy. Eur J Cancer 2001. [DOI: 10.1016/s0959-8049(01)80051-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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231
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Abstract
The 1990s have seen the emergence of several classes of new efficacious drugs which have become established as treatment for breast cancer. Thus, aromatase inhibitors, taxanes and herceptin have all emerged as potentially valuable therapeutic agents for treatment of advanced breast cancer. Bisphosphonates have found a place in preventing skeletal complications in breast cancer patients with bone metastasis. Tamoxifen has a new role in chemoprevention in patients at high risk of breast cancer. This paper summarises these results.
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232
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Abstract
Identification of the molecular determinants of 5-fluorouracil (5-FU) and irinotecan (CPT-11) efficacy and toxicity is critically important for the development of more efficient and less toxic treatment strategies for patients with colon cancer. We have identified molecular predictors of response to chemotherapy with 5-FU and survival in patients with advanced colorectal cancer. Low gene expression levels of thymidylate synthase (TS), dihydropyrimidine dehydrogenase (DPD), and thymidine phosphorylase (TP) are associated with response and survival. Preliminary data suggest that gene expression levels of topoisomerase I, p21, bcl-2, and ICE may be predictive of response to therapy with CPT-11. Increased toxicity seen in patients treated with CPT-11 may be explained by polymorphism in the UGT1A1 gene, which is responsible for glucuronidation of the active metabolite of CPT-11.
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Monga SP, Tang Y, Candotti F, Rashid A, Wildner O, Mishra B, Iqbal S, Mishra L. Expansion of hepatic and hematopoietic stem cells utilizing mouse embryonic liver explants. Cell Transplant 2001; 10:81-9. [PMID: 11294475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023] Open
Abstract
Ex vivo embryonic liver explant culture is a novel and attractive approach to obtain abundant hepatic and hematopoietic stem cells. Gene therapy of autologous hepatic and hematopoietic stem cells represents an alternative therapeutic approach to liver transplantation for genetic and metabolic disorders. In this study we characterize the growth and differentiation of hepatic stem cells utilizing embryonic liver cultures. Day 9.5 liver buds are microdissected and cultured under specific conditions. Modulation of growth conditions by addition of hepatocyte growth factor, Flt-3 ligand, and stem cell factor leads to enrichment of hepatic progenitor cells in embryonic liver explants. Under these conditions, we also demonstrate the role of a novel marker PRAJA-1 to identify hepatic stem cells and transitional hepatocytes. Utilization of dexamethasone enhanced pseudolobule formation with increased hepatocytic and biliary differentiation. Transforming growth factor-beta leads to enrichment of biliary cells in the culture. Gut formation is enhanced in the presence of interleukin-3 and blood formation by increasing the mesodermal tissue in these cultures. We also show increased retroviral-mediated expression of the green fluorescent protein expression in the expanded hepatic and hematopoietic stem cells under different culture conditions. Thus, the embryonic liver explant culture is an attractive source for hepatic progenitors and is a possible step towards generating nontumorigenic immortalized hepatocytes with possible transplantation applications.
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234
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Shelleh HH, Khan SA, Khan LA, Al-Hateeti H, Iqbal S, Saleh AF. Adult Kawasaki disease. Saudi Med J 2000; 21:1078-80. [PMID: 11360074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2023] Open
Abstract
Kawasaki disease was first described from Japan in 1967. Most of the patients reported have been under 3 years of age. We are reporting a typical case of Kawasaki disease in an adult Yemeni male, who had all criteria for diagnosis. Additionally our patient had tricuspid regurgitation as well as tricuspid valve endocarditis, which is only rarely reported in literature. We also noted a rise in monocyte and eosinophil count up to 10%, which may have pathophysiologic significance in this disease. At two year follow up our patient had persistent right bundle branch black which he had developed during the course of his illness. Mortality of the disease is related to cardiac complications especially coronary arteritis and aneurysms in children. In adults too once diagnosis is established patients should be followed for a long period of time to look for any possible cardiac complications.
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Kulkarni S, Heath C, Parker S, Chase A, Iqbal S, Pocock CF, Kaeda J, Cwynarski K, Goldman JM, Cross NC. Fusion of H4/D10S170 to the platelet-derived growth factor receptor beta in BCR-ABL-negative myeloproliferative disorders with a t(5;10)(q33;q21). Cancer Res 2000; 60:3592-8. [PMID: 10910073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
We have studied a patient who presented with clinical features suggestive of chronic myeloid leukemia in accelerated phase. BCR-ABL transcripts were undetectable by reverse transcription-PCR, but a novel reciprocal translocation, t(5;10)(q33;q21.2), was seen by standard cytogenetic analysis. Chromosome band 5q33 contains the gene encoding the platelet-derived growth factor beta receptor (PDGFbetaR), the receptor tyrosine kinase that is disrupted by the t(5;7), t(5;12), and t(5;14) in myeloid disorders, resulting in the fusion of PDGFbetaR to HIP1, TEL/ETV6, and CEV14, respectively. Southern analysis with PDGFbetaR cDNA revealed novel bands in patient but not control DNA after digestion with several restriction enzymes, indicating that this gene is also targeted by the t(5;10). Fluorescence in situ hybridization analysis of chromosome 5 indicated that a small inversion at 5q33 had taken place in addition to the interchromosomal translocation. The site of the chromosome 10 breakpoint fell within YAC 940e4. Because all PDGFbetaR fusions described thus far result in splicing to a common exon of this gene, we performed 5'-rapid amplification of cDNA ends PCR on patient RNA. Several clones were isolated in which PDGFbetaR fused in frame to H4/D10S170, a previously described ubiquitously expressed gene that is fused to the ret protein tyrosine kinase to form the PTC-1 oncogene in approximately 20% of papillary thyroid carcinomas. The presence of H4-PDGFbetaR chimeric mRNA in the patient was confirmed by reverse transcription-PCR; reciprocal PDGFbeta1R-H4 transcripts were not detected. We conclude that t(5;10)(q33;q21.2) is a novel translocation in BCR-ABL-negative chronic myeloid leukemia and that this abnormality results in an H4-PDGFbetaR fusion gene. This finding further strengthens the association between myeloproliferative disorders and deregulated tyrosine kinases.
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MESH Headings
- Amino Acid Sequence
- Base Sequence
- Chromosome Mapping
- Chromosomes, Artificial, Yeast
- Chromosomes, Human, Pair 10
- Chromosomes, Human, Pair 5
- Drosophila Proteins
- Fusion Proteins, bcr-abl/analysis
- Humans
- In Situ Hybridization, Fluorescence
- Karyotyping
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics
- Male
- Middle Aged
- Molecular Sequence Data
- Myeloproliferative Disorders/genetics
- Proto-Oncogene Proteins/genetics
- Proto-Oncogene Proteins c-ret
- Receptor Protein-Tyrosine Kinases/genetics
- Receptor, Platelet-Derived Growth Factor beta/genetics
- Recombinant Fusion Proteins/genetics
- Reverse Transcriptase Polymerase Chain Reaction
- Translocation, Genetic
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Iqbal S, Grimwade D, Chase A, Goldstone A, Burnett A, Goldman JM, Swirsky D. Identification of PML/RARalpha rearrangements in suspected acute promyelocytic leukemia using fluorescence in situ hybridization of bone marrow smears: a comparison with cytogenetics and RT-PCR in MRC ATRA trial patients. MRC Adult Leukaemia Working Party. Leukemia 2000; 14:950-3. [PMID: 10803535 DOI: 10.1038/sj.leu.2401688] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
MESH Headings
- Adult
- Antineoplastic Agents/therapeutic use
- Bone Marrow/pathology
- Chromosomes, Human, Pair 15
- Chromosomes, Human, Pair 17
- Cytogenetics
- Gene Rearrangement
- Humans
- In Situ Hybridization, Fluorescence
- Leukemia, Promyelocytic, Acute/drug therapy
- Leukemia, Promyelocytic, Acute/genetics
- Leukemia, Promyelocytic, Acute/pathology
- Neoplasm Proteins/genetics
- Oncogene Proteins, Fusion/genetics
- Reverse Transcriptase Polymerase Chain Reaction/methods
- Translocation, Genetic
- Tretinoin/therapeutic use
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Iqbal S, Sher MR, Good RA, Cawkwell GD. Diversity in presenting manifestations of systemic lupus erythematosus in children. J Pediatr 1999; 135:500-5. [PMID: 10518085 DOI: 10.1016/s0022-3476(99)70174-5] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
OBJECTIVE To describe the diversity in presenting manifestations of systemic lupus erythematosus (SLE) in children. STUDY DESIGN Initial clinical and laboratory manifestations of 39 children, who fulfilled >/=4 American College of Rheumatology criteria for SLE, were retrospectively analyzed. RESULTS Median age at onset was 12 years. The male to female ratio was 1:18.5, and racial/ethnic backgrounds were white 41%, black 33%, and Hispanic 26%. Initial manifestations included musculoskeletal 74%, cutaneous 72%, constitutional 67%, neurologic 28%, renal 28%, lymphadenopathy 15%, and Raynaud's phenomenon 10%. Laboratory abnormalities at presentation to our clinic included elevated erythrocyte sedimentation rate 87%, anemia 72%, lymphopenia 59%, leukopenia 31%, proteinuria or cellular casts 44%, low C(3) or C(4) level 77%, antinuclear antibodies 97%, and anti-double-stranded DNA 95%. One third (33%) presented with features not initially suggestive of SLE. Six patients presented with unusual manifestations including parotitis, quadriplegia, chorea, severe abdominal pain, persistent cough, and dizziness. However, 85% of patients with atypical manifestations had abnormal complete blood count or urinalysis results at presentation. CONCLUSION Presenting manifestations of SLE in children are diverse. A detailed history, thorough review of systems, complete physical examination, complete blood count, urinalysis, and a high index of suspicion help to make the correct diagnosis of SLE in patients with atypical presentations.
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Kaplan JS, Iqbal S, England BG, Zawacki CM, Herman WH. Is pregnancy in diabetic women associated with folate deficiency? Diabetes Care 1999; 22:1017-21. [PMID: 10388960 DOI: 10.2337/diacare.22.7.1017] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE To determine whether folate metabolism in pregnant diabetic women is significantly different from that in pregnant nondiabetic women, thus predisposing them to having offspring with major congenital anomalies. RESEARCH DESIGN AND METHODS A total of 31 pregnant diabetic women and 54 pregnant nondiabetic control subjects were studied at their first prenatal visits. Dietary folate intake, serum folate, red blood cell folate, urinary folate, and homocysteine were measured and compared after controlling for folate supplementation. Among diabetic women the relationships among parameters of folate metabolism and glycemic control were also assessed. RESULTS There were no significant differences between the pregnant diabetic and non-diabetic women for any measures of folate metabolism after accounting for folate supplementation. In addition, among diabetic women, there were no associations among parameters of folate metabolism and glycemic control. CONCLUSIONS Abnormal folate metabolism does not appear to occur in pregnant diabetic women. It is unlikely that deranged folate metabolism explains the higher incidence of major anomalies in infants of diabetic mothers. These results do not diminish the importance of periconception folate supplementation or preclude other possible scenarios that could restrict folate use by the embryo, leading to congenital anomalies.
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Williams CB, Iqbal S, Zawacki CM, Yu D, Brown MB, Herman WH. Effect of selective screening for gestational diabetes. Diabetes Care 1999; 22:418-21. [PMID: 10097921 DOI: 10.2337/diacare.22.3.418] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE To estimate the percentage of pregnant women who would not be screened and the percentage of women with gestational diabetes mellitus (GDM) who would possibly remain undiagnosed if the American Diabetes Association's (ADA's) new selective screening recommendations are used rather than universal screening for GDM. RESEARCH DESIGN AND METHODS Since 1987, the University of Michigan Health System has performed universal screening for GDM. In 1997, the ADA recommended that women having all four of the following characteristics need not be screened: age < 25 years, not members of an ethnic/racial group with a high prevalence of diabetes, normal body weight, and no family history of diabetes. We studied a random sample of the 25,118 deliveries at the University of Michigan between 1987 and 1997 to determine the prevalence of these four characteristics in our obstetric population. We also studied the prevalence of these four characteristics in 200 women who were diagnosed with GDM in the Endocrine Testing Unit and delivered at the University of Michigan between 1987 and 1997. RESULTS Approximately 10-11% of women who delivered possessed all four low-risk characteristics and would not have been screened for GDM according to the new ADA recommendations. Only 4% of women (5 of 141) with GDM who delivered and for whom data on all four characteristics were reported possessed all four low-risk characteristics and would not have been screened. CONCLUSIONS If the new ADA selective screening recommendations are used, few women with GDM will be missed (4%) but approximately 90% of pregnant women will still need to be screened for GDM.
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Abstract
The concepts of rational design and solid phase combinatorial chemistry were used to develop affinity adsorbents for glycoproteins. A detailed assessment of protein-carbohydrate interactions was used to identify key residues that determine monosaccharide specificity, which were subsequently exploited as the basis for the synthesis of a library of glycoprotein binding ligands. The ligands were synthesised using solid phase combinatorial chemistry and were assessed for their sugar-binding ability with the glycoenzymes, glucose oxidase and RNase B. Partial and completely deglycosylated enzymes were used as controls. The triazine-based ligand, histamine/tryptamine (8/10) was identified as a putative glycoprotein binding ligand, since it displayed particular affinity for glucose oxidase and other mannosylated glycoproteins. Experiments with deglycosylated control proteins, specific eluants and retardation in the presence of competing sugars strongly suggest that the ligand binds the carbohydrate moiety of glucose oxidase rather than the protein itself.
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Grand FH, Chase A, Iqbal S, Nguyen DX, Lewis JL, Marley SB, Davidson RJ, Goldman JM, Gordon MY. A two-color BCR-ABL probe that greatly reduces the false positive and false negative rates for fluorescence in situ hybridization in chronic myeloid leukemia. Genes Chromosomes Cancer 1998; 23:109-15. [PMID: 9739013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
The t(9;22) translocation resulting in the fusion of BCR and ABL genes is pathognomonic in chronic myeloid leukemia (CML) and may be investigated at the molecular level using fluorescence in situ hybridization (FISH). Two-color BCR-ABL probes visualizing one fusion signal (1F FISH) have high false positive rates (FPR) and false negative rates (FNR). The FPR is a result of the random spatial association of probe signals within normal interphase cells so that some cells appear to contain the BCR-ABL fusion gene. The FNR of 1F FISH probes depends on the distance between the BCR and ABL probes hybridized to the BCR-ABL fusion gene (< or =368 kb); the "gap" between the signals causing the cell to be interpreted as normal. To overcome these difficulties, a two-color probe was used, employing four yeast artificial chromosome (YAC) sequences that span the breakpoint regions of the BCR and ABL genes and that visualize the two fusion signals BCR-ABL and ABL-BCR in CML cells (2F FISH). The FNR for the 2F FISH probes was assessed on clonal Ph+ granulocyte-macrophage-colony-forming cell (CFU-GM) derived colonies and was reduced to 0.4% (2/450), compared with an FNR of 13.5% (111/823) with 1F FISH. The FPR in normal mononuclear cells for the 2F FISH was 0. 19 +/- 0.12% (3/1,700), whereas the FPR using 1F FISH was 4.5 +/- 2.3% (63/1,294). The 2F FISH can thus be used to evaluate very small frequencies of BCR-ABL-positive and -negative interphase cells and may be of use in the clinical monitoring of CML.
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Grand FH, Chase A, Iqbal S, Nguyen DX, Lewis JL, Marley SB, Davidson RJ, Goldman JM, Gordon MY. A two-colorBCR–ABL probe that greatly reduces the false positive and false negative rates for fluorescence in situ hybridization in chronic myeloid leukemia. Genes Chromosomes Cancer 1998. [DOI: 10.1002/(sici)1098-2264(199810)23:2<109::aid-gcc3>3.0.co;2-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Aziz AB, Hamid S, Iqbal S, Islam W, Karim SA. Prevalence and severity of viral hepatitis in Pakistani pregnant women: a five year hospital based study. J PAK MED ASSOC 1997; 47:198-201. [PMID: 9339616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A hospital based observational study was carried out on pregnant women presenting with either acute hepatitis or fulminant hepatic failure (FHF), during the past years. Of 53 patients, 20 (38%) developed FHF.Non-A, Non-B was the commonest cause (62%) followed by hepatitis B in 17% and hepatitis A in 4% cases. Eight women expired (case fatality rate 15%) with a high maternal mortality (62%) caused by NANB hepatitis. Perinatal mortality was 30%. Poor prognostic factors identified were lack of antenatal care, severity of jaundice, history of somnolence, gastrointestinal bleeding and a high grade of encephalopathy.
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Iqbal S, Robinson J, Deere D, Saunders JR, Edwards C, Porter J. Efficiency of the polymerase chain reaction amplification of the uid gene for detection of Escherichia coli in contaminated water. Lett Appl Microbiol 1997; 24:498-502. [PMID: 9203407 DOI: 10.1046/j.1472-765x.1997.00160.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Direct detection of Escherichia coli from polluted river water was achieved using polymerase chain reaction (PCR) amplification of the uid gene. Amplification using DNA from environmental samples resulted in non-specific DNA fragments. Specific amplification was achieved through use of the touch-down PCR procedure. Targeting the uidA structural region of the gene gave reproducibly better amplification than targeting the uidR regulatory region. The data demonstrate conditions for optimal specific detection.
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Gokcebay N, Iqbal S, Yang K, Zebrak A, Hirshkowitz M. Accuracy of CPAP predicted from anthropometric and polysomnographic indices. Sleep 1996; 19:600-1. [PMID: 8899941 DOI: 10.1093/sleep/19.7.600] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
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de Asis ML, Iqbal S, Sicklick M. Analysis of a family containing three members with common variable immunodeficiency. Ann Allergy Asthma Immunol 1996; 76:527-9. [PMID: 8673687 DOI: 10.1016/s1081-1206(10)63272-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Common variable immunodeficiency (CVID), a diverse immunodeficiency syndrome characterized by low immune globulin levels and recurrent infections, has been observed in families with the HLA A1 B8 DR3 haplotype. METHODS We report a two-generation family with three members affected by CVID. Immunoglobulin levels, antibody titers, lymphocyte marker analyses, T cell proliferation assays, and HLA typing were performed on the affected family members. RESULTS Studies of the affected patients revealed low levels of immunoglobulin G and A; normal tetanus, rubella and rubeola antibody titers; low B cell numbers; normal T cell numbers; normal CD4/CD8 ratios and normal lymphocyte proliferation studies. HLA typing did not reveal the HLA A1 B8 DR3 haplotype previously associated with familial CVID. CONCLUSION We report a family with a unique presentation of CVID involving possible genetic inheritance other than the HLA A1 B8 DR3 haplotype and possessing lymphocyte characteristics distinct from those usually seen in sporadic CVID.
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van den Berg AA, Iqbal S. Post suxamethonium myalgia--will we never learn? Anaesth Intensive Care 1996; 24:116-7. [PMID: 8669631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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Iqbal S, Khalid ZM, Malik KA. Enhanced biodegradation and emulsification of crude oil and hyperproduction of biosurfactants by a gamma ray-induced mutant of Pseudomonas aeruginosa. Lett Appl Microbiol 1995; 21:176-9. [PMID: 7576503 DOI: 10.1111/j.1472-765x.1995.tb01035.x] [Citation(s) in RCA: 77] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A gamma ray-induced mutant of Pseudomonas aeruginosa strain S8, capable of hyperproduction of biosurfactant from hydrocarbons, was isolated and named as EBN-8. The mutant showed 3-4 times more hydrocarbon emulsification/conversion as compared to the parent when grown on Khaskheli crude oil in minimal medium. Enhanced biosurfactant production and hydrocarbon utilization by the mutant was also observed during growth on heptadecane in minimal medium as indicated by emulsion index and surface tension of cell-free culture broth. Using heptadecane as carbon and energy source, time course for the growth (cfu ml-1) and biosurfactant production were compared for both parent and mutant. These studies were carried out for 24 d at 30 +/- 2 degrees C and for 20 d at 37 degrees C. Growth of EBN-8 was much faster compared to the parent as well as being 2-3 times more hyperproductive.
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Chowdri NA, Darzi MA, Fazili Z, Iqbal S. Intralesional corticosteroid therapy for childhood cutaneous hemangiomas. Ann Plast Surg 1994; 33:46-51. [PMID: 7944196 DOI: 10.1097/00000637-199407000-00009] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Response to intralesional steroid therapy (triamcinolone acetonide and betamethasone acetate) was studied in 70 children of all ages with 74 cutaneous hemangiomas located in a variety of locations. One to seven injections were given without anesthesia with a mean interval of 6 weeks between the injections. Results analyzed 2 months after the last injection showed more than 75% reduction in volume in 43 (58.11%), 50% to 75% reduction in 16 (21.62%), 25% to 50% reduction in 9 (12.16%), and less than 25% reduction in 6 (8.11%) lesions. Response was not related to age, sex, or site of the lesion, but only 2 lesions (22.22%) with an initial volume of more than 20 cm3 showed more than 50% reduction. None showed regrowth within a mean follow-up period of 14 months. Transient cushingoid faces and hypopigmentation were noted in 2 patients each. We feel that intralesional steroid therapy is safe and effective for all cutaneous hemangiomas irrespective of site, sex, or age of the patient.
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