13 results on '"MJ Mathis"'
Search Results
2. Non-Invasive Imaging of Oncolytic Virotherapy by Genetic Capsid Labeling – Dynamic Monitoring of Virotherapy
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MJ Mathis, P. Mallmann, Mariam A. Stoff-Khalili, JS Jung, R. K. Schmutzler, and H. Creutz
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Noninvasive imaging ,Capsid ,Dynamic monitoring ,business.industry ,Maternity and Midwifery ,Obstetrics and Gynecology ,Medicine ,Virotherapy ,business ,Virology ,Oncolytic virus - Published
- 2008
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3. Zielsteuerung der Adenovirotherapie des Mammakarzinoms auf der Ebene der Translation
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David T. Curiel, Mariam A. Stoff-Khalili, Dieter Niederacher, Alexander Stoff, Alexandra P. Hess, MJ Mathis, Peter Dall, and H. G. Bender
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Maternity and Midwifery ,Obstetrics and Gynecology - Published
- 2007
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4. Neue Strategie in der Virotherapie des metastasierten Mammakarzinoms
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MA Stoff-Khalili, H. G. Bender, Peter Dall, C Nestle-Krämling, Alexander Stoff, Alexandra P. Hess, D Niederacher, MJ Mathis, and C David
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- 2007
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5. Neue Strategie in der Virotherapie des Mammakarzinoms
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David T. Curiel, MJ Mathis, Dieter Niederacher, Alexander Stoff, H. G. Bender, Mariam A. Stoff-Khalili, Alexandra P. Hess, and Peter Dall
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Maternity and Midwifery ,Obstetrics and Gynecology - Published
- 2007
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6. Combination of oncolytic adenoviral therapy with chemotherapy for enhanced breast cancer cell killing
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Mariam A. Stoff-Khalili, MJ Mathis, Rita K. Schmutzler, A. Nedeljkovic-Kurepa, BV Glover, David T. Curiel, Peter Mallmann, JS Jung, K. Bosse, Barbara Wappenschmidt, and K Rhiem
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Oncolytic adenovirus ,Cancer Research ,Chemotherapy ,Taxane ,business.industry ,viruses ,medicine.medical_treatment ,medicine.disease ,Small-cell carcinoma ,Virology ,Oncolytic virus ,Breast cancer ,Oncology ,Docetaxel ,Cancer cell ,medicine ,Cancer research ,business ,medicine.drug - Abstract
Abstract #2129 Oncolytic adenoviruses are emerging agents for treatment of cancer by tumor-restricted virus replication, cell lysis and virus spread. A promising oncolytic adenovirus agent, known as Ad5-24-RGD, harbors a 24-bp deletion in the E1A gene that abrogates the binding of E1A to the retinoblastoma tumor suppressor (Rb) and presents enhanced infectivity of primary cancer cells due to insertion of an Arg-Gly-Asp (RGD) motif into the fiber knob. Thus, Ad5-24-RGD has improved cancer cell infection efficiency due to expanded tropism toward alpha-v integrins. It also replicates selectively in cancer cells with Rb/p16 mutations. As with conventional therapy regimes, oncolytic virotherapy, by itself, has limited success in complete tumor eradication in both preclinical animal models and clinical studies. Combination of anticancer agents with different modes of action remains a mainstay in cancer treatment. We undertook one approach towards this end by combining oncolytic adenoviral therapy with chemotherapy. In this study, we investigated a combination treatment of breast cancer cells with Ad5-4-RGD and Docetaxel, a microtubule-stabilizing taxane that is being used in the clinic for the treatment of breast and prostate cancers and small cell carcinoma of the lung. Our results indicate a synergistic effect between Docetaxel and Ad5-24-RGD in breast cancer cell killing at a lower dose than either agent alone. These results suggest that viral replication was not inhibited by this chemotherapy treatment and that chemotherapy could reduce the amount of viral particles needed to help eradicate the tumor. Administration of lower viral loads would simultaneously improve safety and decrease immunogenicity of the vector. Likewise lower doses of chemotherapy agents would decrease toxicity and side effects. The inclusion of oncolytic adenoviruses into multimodal cancer treatment together with chemotherapy has a potential to become powerful therapeutic regimen. Citation Information: Cancer Res 2009;69(2 Suppl):Abstract nr 2129.
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- 2009
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7. Ligand-mediated selective targeting of adenovirus in metastatic breast cancer
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P. Mallmann, Yoshinobu Odaka, David T. Curiel, MJ Mathis, R. K. Schmutzler, Shilpa Bhatia, L Smart, Mariam A. Stoff-Khalili, J Podduturi, and XL Li
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Cancer Research ,Liver infection ,medicine.diagnostic_test ,Genetic enhancement ,Biology ,medicine.disease ,Molecular biology ,Metastatic breast cancer ,CXCR4 ,Flow cytometry ,Chemokine receptor ,Immune system ,Oncology ,medicine ,Receptor - Abstract
Abstract #2126 The success of gene therapy relies on efficient and targeted delivery systems. Adenovirus vectors have a number of advantages for gene therapy. However, because of their lack of tumor tropism and their tendency to induce liver infection following systemic administration, they cannot be used for systemic attack on metastatic disease. Many solid tumors (e.g., colon, lung, and breast) and hematopoietic tumors over express the chemokine receptor CXCR4. CXCR4 belongs to the large superfamily of G protein-coupled receptors, and is known to participate in a number of biological processes including organogenesis, hematopoiesis, and immune response. Recent evidence has highlighted the role of CXCR4 in cancer, particularly in cancer metastasis due to dysregulation of the receptor leading to enhanced signaling. The present study addresses this issue by retargeting adenovirus to the breast cancer cells overexpressing CXCR4 receptor. We used sCAR-T4-CXCL12, a bispecific adaptor molecule with the ectodomain of CAR linked by the T4 fibritin trimerization motif to the human CXCR4 ligand CXCL12 (also known as SDF-1). The sCAR-T4-CXCL12 should therefore be useful in retargeting adenovirus vectors to CXCR4-positive metastases. Infectivity assays in the absence as well as presence of ligand were performed in human breast cancer MDA-MB-435 cells. Cells were infected with different titres of Ad-CMV-GFP-Luc with and without ligand. Forty-eight hours post-infection, cells were harvested and analysed for the GFP expression by fluorescent microscopy and flow cytometry. It was further interesting to observe the time-dependence of infectivity curve. For this purpose, MDA-MB-435 cells were incubated with optimum titre of Ad-CMV-GFP-Luc vector in the presence of CXCR4 targeting ligand at different time intervals. This was followed by expression analysis of GFP protein by fluorescent microscopy and flow cytometry. Quantification by flow cytometry demonstrated a dramatic 20- to 40-fold increase in the infectivity of MDA-MB-435 cells both in a dose-dependent and time-dependent manner using the sCAR-T4-CXCL12 targeted adenovirus compared to the untargeted vector. In this report, we show that sCAR-T4-CXCL12 can significantly redirect an adenoviral gene therapy vector to CXCR4-positive breast cancer cells in culture. This bispecific ligand should, therefore, be a powerful agent to retarget adenovirus vectors to tumor metastases. The future goal is to investigate the capacity of this agent to re-direct adenoviral vectors in vivo using breast cancer metastasis models. Citation Information: Cancer Res 2009;69(2 Suppl):Abstract nr 2126.
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- 2009
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8. African-American inflammatory bowel disease in a Southern U.S. health center.
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Veluswamy H, Suryawala K, Sheth A, Wells S, Salvatierra E, Cromer W, Chaitanya GV, Painter A, Patel M, Manas K, Zwank E, Boktor M, Baig K, Datti B, Mathis MJ, Minagar A, Jordan PA, and Alexander JS
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- Adult, Female, Humans, Incidence, Male, Prevalence, Retrospective Studies, United States epidemiology, Black or African American, Community Health Centers, Inflammatory Bowel Diseases ethnology, Office Visits trends
- Abstract
Background: Inflammatory Bowel Diseases (IBD) remain significant health problems in the US and worldwide. IBD is most often associated with eastern European ancestry, and is less frequently reported in other populations of African origin e.g. African Americans ('AAs'). Whether AAs represent an important population with IBD in the US remains unclear since few studies have investigated IBD in communities with a majority representation of AA patients. The Louisiana State University Health Sciences Center in Shreveport (LSUHSC-S) is a tertiary care medical center, with a patient base composed of 58% AA and 39% Caucasian (W), ideal for evaluating racial (AA vs. W) as well and gender (M vs. F) influences on IBD., Methods: In this retrospective study, we evaluated 951 visits to LSUHSC-S for IBD (between 2000 to 2008) using non-identified patient information based on ICD-9 medical record coding (Crohn's disease 'CD'-555.0- 555.9 and ulcerative colitis 'UC'-556.0-556.9)., Results: Overall, there were more cases of CD seen than UC. UC and CD affected similar ratios of AA and Caucasian males (M) and females (F) with a rank order of WF > WM > AAF > AAM. Interestingly, in CD, we found that annual visits per person was the highest in AA M (10.7 ± 1.7); significantly higher (* -p < 0.05) than in WM (6.3 ± 1.0). Further, in CD, the female to male (F: M) ratio in AA was significantly higher (*- p < 0.05) (1.9 ± 0.2) than in Caucasians (F:M = 1.3 ± 0.1) suggesting a female dominance in AACD; no differences were seen in UC F: M ratios., Conclusion: Although Caucasians still represent the greatest fraction of IBD (~64%), AAs with IBD made up >1/3 (36.4%) of annual IBD cases from 2000-2008 at LSUHSC-S. Further studies on genetic and environments risks for IBD risk in AAs are needed to understand differences in presentation and progression in AAs and other 'non-traditional' populations.
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- 2010
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9. Moderate chronic pain, weight and dietary intake in African-American adult patients with sickle cell disease.
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Pells JJ, Presnell KE, Edwards CL, Wood M, Harrison MO, DeCastro L, Johnson S, Feliu M, Canada S, Jonassaint JC, Barker C, Leach-Beale B, Mathis MJ, Applegate K, Holmes A, Byrd G, and Robinson E
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- Adult, Chronic Disease, Cross-Sectional Studies, Female, Humans, Louisiana, Male, North Carolina, Pain etiology, Surveys and Questionnaires, Black or African American psychology, Anemia, Sickle Cell ethnology, Anemia, Sickle Cell physiopathology, Body Mass Index, Diet, Feeding Behavior, Nutritional Status, Pain classification, Pain Measurement
- Abstract
In this exploratory study, we evaluated weight status and dietary intake patterns during painful episodes in adult patients with SCD. Specifically, we explored the relation between pain severity and body mass index (BMI), and we tested the hypothesis that dietary intake would be reduced and dietary content altered during periods of increased pain. We conducted an analysis of survey data from 62 patients involved in a longitudinal evaluation of the relationship of medical and psychosocial factors to pain. Nearly half of patients with SCD were overweight, and 20% were obese. BMI was positively related to interference associated with pain. Although BMI was not statistically associated with reported pain severity, >40% of patients reported that they perceived their pain to be affected by their weight. Less than 20% of patients reported that they perceived that their weight affected their pain. Regarding dietary patterns, the majority of patients reported eating less during episodes of pain and significantly decreasing their intake of fats and proteins. We conclude that there is a need to better understand the relation among weight, dietary patterns and pain in patients with SCD in order to provide patients with accurate education and effective treatment recommendations for managing their disease and reducing current and future risks of lifestyle and disease-related morbidities.
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- 2005
10. Cerebral histoplasmosis in the azole era: report of four cases and review.
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Saccente M, McDonnell RW, Baddour LM, Mathis MJ, and Bradsher RW
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- Adult, Aged, Fatal Outcome, Female, Histoplasmosis diagnosis, Histoplasmosis physiopathology, Humans, Male, Middle Aged, Amphotericin B therapeutic use, Antifungal Agents therapeutic use, Histoplasmosis drug therapy
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We report four cases of cerebral histoplasmosis and discuss features of six additional cases reported in the medical literature in the past 10 years, when azoles have been available for therapy. Most patients with this disease are immunocompromised or have a history that suggests heavy exposure to Histoplasma capsulatum. Fever and other clinical findings of systemic toxicity caused by disseminated histoplasmosis may be absent; 5 of 10 patients did not manifest these findings. Although the mainstay of treatment for central nervous system histoplasmosis remains amphotericin B, 9 of the 10 patients received itraconazole or fluconazole either as initial therapy or after a course of treatment with amphotericin B.
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- 2003
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11. Digestibility and utilization of pearl millet diets fed to finishing beef cattle.
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Hill GM, Newton GL, Streeter MN, Hanna WW, Utley PR, and Mathis MJ
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- Animals, Edible Grain chemistry, Edible Grain metabolism, Fatty Acids, Volatile metabolism, Male, Nitrogen metabolism, Panicum chemistry, Glycine max chemistry, Glycine max metabolism, Zea mays chemistry, Zea mays metabolism, Cattle metabolism, Diet veterinary, Digestion physiology, Panicum metabolism
- Abstract
Pearl millet grain was blended with corn in 1:1 or 2:1 ratios in beef finishing diets fed in two metabolism and two feedlot trials. In Exp. 1, diets contained 1) 79.5% corn and 4.5% soybean meal (C-SBM), 2) 28% corn, 54.5% sorghum, and 1.5% soybean meal [GSC(2:1)], and 3) 28% corn and 56% pearl millet [PMC(2:1)]. In Exp. 2, diets contained 1) 81.5% corn and 3.5% soybean meal (C-SBM) or 2) 42.5% corn and 42.5% pearl millet [PMC(1:1)]. Diets fed to steers in metabolism trials in Exp. 1 and 2 had similar (P > .10) apparent digestion coefficients for OM, crude fiber, NDF, and ADF. However, ether extract digestibility was higher (P < .05) for C-SBM than for GSC(2:1) and PMC(2:1) in Exp. 1, and it was higher (P < .10) for C-SBM than for PMC(1:1) in Exp. 2. In both experiments CP digestibility was higher (P < .10) for C-SBM diets, and N retention was similar (P > .10) for diets within each experiment. In each experiment, TDN calculated from apparent digestion coefficients was converted to NEm and NEg. The TDN, NEm, and NEg were lower (P < .10) for GSC(2:1) and PMC(2:1) than for C-SBM in Exp. 1. Experimental diets were fed to steers (n = 45; 396 +/- 19 kg initial BW; 70-d ad libitum feeding) in Exp. 1 and to heifers (n = 30; 318 +/- 15 kg initial BW; 92-d ad libitum feeding) in Exp. 2. The ADG, empty body weight gain (EBG), and predicted EBG were not different (P > .10) for diets composed of the different grain sources. Feed DMI and DM per gain were higher (P < .05) for PMC(1:1) than for C-SBM in Exp. 2. Pearl millet supplied approximately 88% as much NEm and 85% as much NEg as the corn-SBM portion of diets having similar CP concentrations.
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- 1996
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12. Effect of supplemental fish meal protein on site and extent of digestion in beef steers.
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Streeter MN and Mathis MJ
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- Animals, Cattle metabolism, Colon metabolism, Colon physiology, Dietary Proteins analysis, Digestion drug effects, Fish Products analysis, Intestine, Small metabolism, Intestine, Small physiology, Male, Nitrogen metabolism, Rumen metabolism, Rumen physiology, Starch metabolism, Cattle physiology, Dietary Proteins standards, Digestion physiology, Fish Products standards
- Abstract
The effects of supplemental fish meal on site and extent of digestion were determined using four steers equipped with ruminal, duodenal, and ileal cannulas. Fish meal was included in diets to supply 0 (0FM), 25 (25FM), 50 (50FM), or 75 (75FM) g of N daily above the CP requirement of a 400-kg steer gaining 1.2 kg/d. Total tract starch digestibility tended to be greatest for 25FM (95%), lowest for 0FM (90%), and intermediate for 50FM (94%) and 75FM (92%). Total tract N digestibility was greatest for 25FM, lowest for 0FM, and intermediate for 50FM and 75FM (cubic, P < .05). Total tract starch digestibility increased .46 percentage units for each unit increase in N digestibility (n = 16, P = .03). Ruminal starch digestibility was greatest for 25FM, intermediate for 50FM and 75FM, and lowest for 0FM (quadratic; P < .10). Starch flow to the duodenum was decreased for 25FM and 50FM vs 0FM and 75FM (quadratic, P < .10) and N flow to the duodenum was increased (linear, P < .01) by fish meal. Fish meal supplementation increased N digestibility (quadratic, P < .05) but had no effect (P > .10) on starch digestibility in the small intestine. Starch digestibility in the small intestine was not related to N flow to the duodenum; however, starch digestibility increased .9 percentage units for each percentage unit increase in N digestibility (n = 16, P = .02). Fish meal supplementation tended to increase total tract starch digestibility by increasing ruminal, but not small intestinal, digestibility.
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- 1995
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13. Vitamin E supplementation and the retinopathy of prematurity.
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Johnson L, Schaffer D, Quinn G, Goldstein D, Mathis MJ, Otis C, and Boggs TR Jr
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- Animals, Cattle, Clinical Trials as Topic, Colostrum analysis, Female, Follow-Up Studies, Humans, Infant Food, Infant, Newborn, Milk analysis, Milk, Human analysis, Pregnancy, Vitamin E analysis, Infant, Premature, Retinopathy of Prematurity prevention & control, Vitamin E therapeutic use
- Abstract
The effect of high-dosage E treatment (Rx) initiated at the stage of 3-plus active disease (target serum E levels, 5-6 mg/dl) was evaluated by a standardized scoring system of visual morbidity at the one to two year eye exam among infants cared for in the University of Pennsylvania Neonatal Complex (1976-1978). The incidence of legal blindness in both eyes or worse was decreased from 71 to 40% in E Rx (n = 10) as compared to non-E Rx (n = 14) infants, and the number of infants with minimal visual morbidity was increased. Pilot studies (1972-76; target serum E level, 1.5 and 3.0 mg/dl) of the prophylactic effect of E Rx from birth on showed a decrease in mean severity of acute stage disease and a decrease in sequelae at one to two years. A strikingly difference in visual morbidity following resolved low-grade ROP was seen when prestudy infants (1968-72) who were fed early iron supplements and given formulas with low E:PUFA ratios were compared to non-E Rx as well as to E Rx 1972-76 infants. Vitamin E seems to exert a beneficial effect at all stages of ROP, perhaps because of its broadly based regulatory role.
- Published
- 1982
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