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Bourdin A, Virchow J, Papi A, Lugogo N, Halpin D, Daizadeh N, Ortiz B, Djandji M. P066 DUPILUMAB EFFICACY IN PATIENTS WITH TYPE 2 ASTHMA WITH/WITHOUT ALLERGIC PHENOTYPE RECEIVING HIGH-DOSE INHALED CORTICOSTEROIDS. Ann Allergy Asthma Immunol 2021. [DOI: 10.1016/j.anai.2021.08.095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Sullivan P, Ghushchyan V, Kavati A, Ortiz B, Lecocq J, Skoner D, Zeiger R. P231 ADVERSE EVENTS ASSOCIATED WITH SYSTEMIC CORTICOSTEROID USE AMONG CHILDREN AND ADOLESCENTS WITH ASTHMA. Ann Allergy Asthma Immunol 2019. [DOI: 10.1016/j.anai.2019.08.297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Sullivan PW, Ghushchyan V, Navaratnam P, Friedman HS, Kavati A, Ortiz B, Lanier B. Exploring factors associated with health disparities in asthma and poorly controlled asthma among school-aged children in the U.S. J Asthma 2019; 57:271-285. [PMID: 30732486 DOI: 10.1080/02770903.2019.1571080] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Objective: Certain populations suffer disproportionately from asthma and asthma morbidity. The objective was to provide a national descriptive profile of asthma control and treatment patterns among school-aged children (SAC: aged 6-17) in the U.S. Methods: This was a cross-sectional analysis using the nationally representative 2007-2014 Medical Expenditure Panel Survey. Among SAC with asthma, indicators of poor control included: exacerbation/asthma attack; >3 canisters short-acting beta agonist (SABA)/3 months; and asthma-specific Emergency Department or inpatient visits (ED/IP). Results: Non-Hispanic black, non-Hispanic multiple races, Puerto Rican, obese, Medicaid, poor, ≥2 non-asthma chronic comorbidities (CC), and family average CC ≥ 2 were associated with higher odds of having asthma. The following had significantly higher odds ratios (OR) of excessive SABA use compared to non-Hispanic whites [OR; CI; p < 0.05]: Puerto Rican (3.8; 2.1-6.9), Mexican (3.6; 2.0-6.4), Central/South American (3.0; 1.2-7.7), Hispanic-other (3.1; 1.1-9.0), non-Hispanic black (2.5; 1.6-3.9), and non-Hispanic Asian (4.0; 1.7-9.2). SABA OR were also significant for Spanish spoken at home (2.5; 1.6-3.8), obese (2.1; 1.3-3.3), Medicaid (2.9; 2.0-4.1), no medical insurance (2.1; 1.1-4.1), no prescription insurance (2.5; 1.8-3.5), poor (2.8; 1.7-4.7), CC ≥ 2 (2.1; 1.6-2.8), parent-without high-school degree (2.5; 1.8-3.6), parent-SF-12 Physical Component Scale <50 (1.6; 1.2-2.1) and Mental Component Scale <50 (1.5; 1.1-2.0). Significant differences also existed across subgroups for ED/IP visits. Conclusions: There are disparities in asthma control and prevalence among certain populations in the U.S. These results provide national data on disparities in several indicators of poor asthma control beyond the standard race/ethnicity groupings.
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Affiliation(s)
- P W Sullivan
- Regis University School of Pharmacy, Denver, Colorado, USA
| | - V Ghushchyan
- University of Colorado, Denver, Colorado, USA.,American University of Armenia, Yerevan, Armenia
| | | | | | - A Kavati
- Novartis Pharmaceuticals Corporation, East Hanover, New Jersey, USA
| | - B Ortiz
- Novartis Pharmaceuticals Corporation, East Hanover, New Jersey, USA
| | - B Lanier
- University of North Texas, Fort Worth, Texas, USA
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Corren J, Casale T, Haselkorn T, Yang M, Iqbal A, Ortiz B, Busse W. EFFECT OF OMALIZUMAB ON SEASONAL EXACERBATIONS IN ADOLESCENTS AND ADULTS WITH MODERATE-TO-SEVERE ALLERGIC ASTHMA. Ann Allergy Asthma Immunol 2018. [DOI: 10.1016/j.anai.2018.09.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Haselkorn T, Szefler S, Chipps B, Bleecker E, Mink D, Kianifard F, Ortiz B, Zeiger R. PREDICTORS OF A FUTURE SEVERE ASTHMA EXACERBATION AFTER A DECADE FOLLOW-UP: RESULTS FROM TENOR II. Ann Allergy Asthma Immunol 2018. [DOI: 10.1016/j.anai.2018.09.141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Cabrera J, Infante J, Cruz C, Moreno M, Gonzalez M, Rayo J, Simon P, Ortiz B, Muñoz J. EP-1381: Role of Metabolic Tumor Volume and Total Lesion Glycolysis on FDG-PET/CT in NSCLC treated with SBRT. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)31690-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Ke X, Kavati A, Wertz D, Huang Q, Wang L, Willey V, Stephenson J, Ortiz B, Panettieri R, Corren J. P211 A real-world assessment of asthma exacerbations in asthma patients newly treated with omalizumab. Ann Allergy Asthma Immunol 2017. [DOI: 10.1016/j.anai.2017.08.249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Huang Q, Kavati A, Ke X, Wertz D, Wang L, Willey V, Stephenson J, Ortiz B, Panettieri R, Corren J. P210 Real-world comparisons of clinical characteristics and medication utilization pre- and post-omalizumab initiation in asthma patients. Ann Allergy Asthma Immunol 2017. [DOI: 10.1016/j.anai.2017.08.248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ke X, Kavati A, Wertz D, Huang Q, Wang L, Willey V, Stephenson J, Ortiz B, Panettieri R, Corren J. P212 A real-world assessment of omalizumab treatment patterns in asthma patients newly treated with omalizumab. Ann Allergy Asthma Immunol 2017. [DOI: 10.1016/j.anai.2017.08.250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Pilon D, Kavati A, Ortiz B, Paknis B, Vegesna A, Schiffman B, Zhdanava M, Lefebvre P, Stone B. P215 Description of baseline characteristics of pediatric allergic asthma patients including those initiated on omalizumab. Ann Allergy Asthma Immunol 2017. [DOI: 10.1016/j.anai.2017.08.253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Pilon D, Kavati A, Ortiz B, Paknis B, Vegesna A, Schiffman B, Zhdanava M, Lefebvre P, Stone B. P207 Symptoms, asthma control, lung function, and corticosteroid sparing following omalizumab initiation in allergic asthma patients. Ann Allergy Asthma Immunol 2017. [DOI: 10.1016/j.anai.2017.08.245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Sullivan P, Ghushchyan V, Navaratnam P, Friedman H, Kavati A, Ortiz B, Lanier B. P201 Comorbidity burden of children with asthma in the U.S. Ann Allergy Asthma Immunol 2017. [DOI: 10.1016/j.anai.2017.08.239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Zeiger R, Chipps B, Ortiz B, Kianifard F, Paknis B, Haselkorn T, Foreman A, Szefler S. P230 Long-term assessment of the burden of atopic sensitization in patients with severe/difficult-to-treat asthma. Ann Allergy Asthma Immunol 2017. [DOI: 10.1016/j.anai.2017.08.268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Sullivan P, Ghushchyan V, Navaratnam P, Friedman H, Kavati A, Ortiz B, Lanier B. P202 The association between asthma, obesity and outcomes among school-aged children in the U.S. Ann Allergy Asthma Immunol 2017. [DOI: 10.1016/j.anai.2017.08.240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Sullivan PW, Ghushchyan V, Navaratnam P, Friedman HS, Kavati A, Ortiz B, Lanier B. The national burden of poorly controlled asthma, school absence and parental work loss among school-aged children in the United States. J Asthma 2017; 55:659-667. [PMID: 28981368 DOI: 10.1080/02770903.2017.1350972] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
OBJECTIVE The degree of poorly controlled asthma and its association with missed school days and parental missed work days is not well understood. METHODS This was a retrospective analysis of missed school days and missed work days for school-aged children (SAC; aged 6-17) and their caregivers in the nationally representative 2007-2013 Medical Expenditure Panel Survey (MEPS). Indicators of poor asthma control included: exacerbation in previous 12 months; use of >3 canisters of short-acting beta agonist (SABA) in 3 months; and annual asthma-specific (AS) Emergency Department (ED) or inpatient (IP) visits. Negative binomial regression was used for missed school days, and a Heckman two-step selection model was used for missed work days. All analyses controlled for sociodemographics and other covariates. RESULTS There were 44,320 SAC in MEPS, of whom 5,890 had asthma. SAC with asthma and an indicator of poor control missed more school days than SAC without asthma: exacerbation (1.8 times more; p < 0.001); >3 canisters SABA (2.7 times more; p < 0.001) and ED/IP visit (3.8 times more; p < 0.001). The parents/caregivers of SAC with asthma and an exacerbation missed 1.2 times more work days (p < 0.05), while those with SAC with asthma and an ED/IP visit missed 1.8 times more work days (p < 0.01) than the parents of SAC without asthma. CONCLUSIONS This study provides evidence of the significant national burden of poorly controlled asthma due to missed school and work days in the United States. More effective and creative asthma management strategies, with collaboration across clinical, community and school-based outreach, may help address this burden.
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Affiliation(s)
- P W Sullivan
- a Rueckert-Hartman College for Health Professions , Regis University School of Pharmacy , Denver , CO , USA
| | - V Ghushchyan
- b Pharmaceutical Outcomes Research , University of Colorado , Denver CO , USA.,c American University of Armenia , Yerevan , Armenia
| | | | | | - A Kavati
- e Novartis Pharmaceuticals Corporation , East Hanover , NJ , USA
| | - B Ortiz
- e Novartis Pharmaceuticals Corporation , East Hanover , NJ , USA
| | - B Lanier
- f Department Pediatrics/Immunology , University of North Texas , Fort Worth , TX , USA
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Maurer M, Sofen H, Ortiz B, Kianifard F, Gabriel S, Bernstein JA. Positive impact of omalizumab on angioedema and quality of life in patients with refractory chronic idiopathic/spontaneous urticaria: analyses according to the presence or absence of angioedema. J Eur Acad Dermatol Venereol 2017; 31:1056-1063. [PMID: 27911016 PMCID: PMC6084322 DOI: 10.1111/jdv.14075] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 11/22/2016] [Indexed: 11/30/2022]
Abstract
Background Approximately 50% of patients with chronic idiopathic/spontaneous urticaria (CIU/CSU) report hives and angioedema; some experience hives/angioedema only. Objective Assess omalizumab's effect on angioedema and quality of life (QoL) in subgroups with refractory CIU/CSU: those with and without angioedema. Methods Patients received omalizumab (75, 150 or 300 mg) or placebo every 4 weeks for 12/24 weeks. Angioedema and QoL were assessed [Urticaria Patient Daily Diary and Dermatology Quality of Life Index (DLQI)]. Subgroups were based on the presence/absence of baseline angioedema 7 days prior to randomization. Results Patients with baseline angioedema randomized to omalizumab 300 mg had a greater reduction in mean weekly incidence of angioedema and mean number of days/week with angioedema vs. placebo at 12 and 24 weeks. A 3.3‐ to 4.5‐point greater mean reduction in DLQI score was achieved with omalizumab 300 mg treatment vs. placebo, above the minimal clinically important difference threshold. Results with lower doses vs. placebo were variable. Conclusion Compared with placebo, omalizumab 300 mg treatment over 12–24 weeks resulted in marked reduction in incidence and number of days/week with angioedema accompanied by clinically relevant improvement in QoL.
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Affiliation(s)
- M Maurer
- Department of Dermatology and Allergy, Allergie-Centrum-Charité at the Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - H Sofen
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - B Ortiz
- Novartis Pharmaceuticals Corporation, East Hanover, NJ, USA
| | - F Kianifard
- Novartis Pharmaceuticals Corporation, East Hanover, NJ, USA
| | - S Gabriel
- Novartis Pharmaceuticals Corporation, East Hanover, NJ, USA
| | - J A Bernstein
- Allergy Section, Division of Immunology, Department of Internal Medicine, College of Medicine, University of Cincinnati, Cincinnati, OH, USA
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Ortiz B, Szefler S, Trzaskoma B, Paknis B, Antonova E. P144 Exacerbation-free asthma in children treated with omalizumab. Ann Allergy Asthma Immunol 2016. [DOI: 10.1016/j.anai.2016.09.154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Hernández-Ostiz S, Pérez-Ramada M, Ortiz B, Requena C, Ribas G, Aznar E, Nagore E. 25-Hydroxyvitamin D in Patients With Melanoma and Factors Associated With Inadequate Levels. Actas Dermo-Sifiliográficas (English Edition) 2016. [DOI: 10.1016/j.adengl.2016.06.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Hernández-Ostiz S, Pérez-Ramada MD, Ortiz B, Requena C, Ribas G, Aznar E, Nagore E. 25-Hydroxyvitamin D in Patients With Melanoma and Factors Associated With Inadequate Levels. Actas Dermosifiliogr 2016; 107:758-764. [PMID: 27418183 DOI: 10.1016/j.ad.2016.06.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 05/11/2016] [Accepted: 06/07/2016] [Indexed: 10/21/2022] Open
Abstract
INTRODUCTION AND OBJECTIVES Patients with melanoma appear to take extreme sun-protection measures, which could influence 25-hydroxyvitamin D [25(OH)D] levels. The aim of this study was to measure 25(OH)D levels in patients with cutaneous melanoma and identify factors associated with inadequate levels. MATERIAL AND METHODS Over a period of 1 year, we prospectively measured serum 25(OH)D in patients with cutaneous melanoma and used logistic regression analysis to identify environmental, phenotypic, and genotypic factors that were associated with insufficient and deficient levels. RESULTS Of 215 patients analyzed, 8.8% had deficient 25(OH)D levels (<10ng/mL) and just 24.7% had normal levels. Insufficient levels (<30ng/mL) were associated with obesity (odds ratio [OR], 4.2; 95% confidence interval [CI], 1.3-13.3) and blood sampling in autumn/winter (OR, 2.1; 95% CI, 1.1-4). Deficient levels (<10ng/mL) were associated with obesity (OR, 7.1; 95% CI, 1.1-46.9), blood sampling in autumn/winter (OR, 9.0; 95% CI, 1.7-47.0), absence of freckles (OR, 5.4; 95% CI, 1.2-23.4), and, with marginal significance, the presence of fewer than 2 nonsynonymous melanocortin-1 receptor (MC1R) polymorphisms (OR, 5.0; 95% CI, 0.9-28.9). LIMITATIONS Some factors related to 25(OH)D levels, such as food, were not included in the analyses. CONCLUSIONS 25(OH)D levels should be monitored in patients with melanoma and the need for oral supplements should be contemplated where appropriate.
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Affiliation(s)
- S Hernández-Ostiz
- Servicio de Dermatología, Instituto Valenciano de Dermatología, Valencia, España
| | - M D Pérez-Ramada
- Servicio de Dermatología, Instituto Valenciano de Dermatología, Valencia, España
| | - B Ortiz
- Servicio de Análisis Clínicos y Microbiología, Instituto Valenciano de Dermatología, Valencia, España
| | - C Requena
- Servicio de Dermatología, Instituto Valenciano de Dermatología, Valencia, España
| | - G Ribas
- Servicio de Onco-Hematología, Hospital Clínic Universitari de Valencia, Valencia, España
| | - E Aznar
- Servicio de Análisis Clínicos y Microbiología, Instituto Valenciano de Dermatología, Valencia, España
| | - E Nagore
- Servicio de Dermatología, Instituto Valenciano de Dermatología, Valencia, España.
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Lanier B, Antonova E, Ortiz B, Trzaskoma B, Paknis B, Iqbal A, Bridges T. P147 Omalizumab reduces healthcare resource use in children. Ann Allergy Asthma Immunol 2016. [DOI: 10.1016/j.anai.2016.09.157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Sánchez D, Sus S, Ortiz B, Sánchez J, Cardona R. Cross-reactivity Between Cassava and Latex in a Colombian Patient With an Anaphylactic Reaction. J Investig Allergol Clin Immunol 2015; 25:453-455. [PMID: 26817149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023] Open
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Turner SJ, Nazareth T, Raimundo K, Zhou H, Ortiz B, Yu TC, Li L. Impact of Omalizumab On All-Cause and Asthma-Related Health Care Resource Utilisation in Patients With Moderate or Severe Persistent Asthma. Value Health 2014; 17:A599. [PMID: 27202067 DOI: 10.1016/j.jval.2014.08.2071] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- S J Turner
- Novartis Pharmaceuticals, East Hanover, NJ, USA
| | - T Nazareth
- Novartis Pharmaceuticals Corporation, East Hanover, NJ, USA
| | - K Raimundo
- Genentech Inc., South San Francisco, CA, USA
| | - H Zhou
- KMK Consulting Inc., Florham Park, NJ, USA
| | - B Ortiz
- Novartis Pharmaceuticals Corporation, East Hanover, NJ, USA
| | - T C Yu
- Novartis Pharmaceuticals Corporation, East Hanover, NJ, USA
| | - L Li
- Career International Inc., Shanghai, China
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Yu TC, Nazareth T, Turner SJ, Raimundo K, Zhou H, Ortiz B, Li L. Impact of Omalizumab on Poor Asthma Control Events and Medication Utilisation in Patients With Moderate or Severe Persistent Asthma. Value Health 2014; 17:A589. [PMID: 27202008 DOI: 10.1016/j.jval.2014.08.2015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- T C Yu
- Novartis Pharmaceuticals Corporation, East Hanover, NJ, USA
| | - T Nazareth
- Novartis Pharmaceuticals Corporation, East Hanover, NJ, USA
| | - S J Turner
- Novartis Pharmaceuticals, East Hanover, NJ, USA
| | - K Raimundo
- Genentech Inc., South San Francisco, CA, USA
| | - H Zhou
- KMK Consulting Inc., Florham Park, NJ, USA
| | - B Ortiz
- Novartis Pharmaceuticals Corporation, East Hanover, NJ, USA
| | - L Li
- Career International Inc., Shanghai, China
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Abstract
Isoline pairs of hybrid corn, similar except for presence or absence of a Bt trait, were planted at eight sites across Alabama over three years. This study evaluated insect damage, yield, and aflatoxin levels as affected by the Bt traits, YieldGard Corn Borer (expressing Cry1Ab), Herculex I (expressing Cry1F), Genuity VT Triple PRO (expressing Cry1A.105 and Cry2Ab2), Agrisure Viptera 3111 (expressing Vip3Aa20 and Cry1Ab), and Genuity SmartStax (expressing Cry1A.105, Cry2Ab2, and Cry1F). When examined over all sites and years, hybrids with any of the included Bt traits had lower insect damage and higher yields. However, insect damage was not consistently correlated to yield. Bt traits expressing multiple proteins provided greater protection from corn earworm feeding than did traits for single proteins. Yields and aflatoxin levels were highly variable among sites although irrigated sites had higher yields than nonirrigated sites. Aflatoxins commonly accumulate in corn in the southeastern United States because of prevailing high temperatures and frequent dry conditions. Aflatoxin levels were not consistently associated with any factors that were evaluated, including Bt traits.
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Affiliation(s)
- K L Bowen
- Department of Entomology and Plant Pathology, Auburn University, AL 36849.
| | - K L Flanders
- Department of Entomology and Plant Pathology, Auburn University, AL 36849
| | - A K Hagan
- Department of Entomology and Plant Pathology, Auburn University, AL 36849
| | - B Ortiz
- Department of Crop, Soil and Environmental Sciences, Auburn University, AL 36849
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Guerrero A, Gavilá J, Folkerd E, Ortiz B, Martínez F, García A, Climent MA, Guillem V, Ruíz A. Incidence and predictors of ovarian function recovery (OFR) in breast cancer (BC) patients with chemotherapy-induced amenorrhea (CIA) who switched from tamoxifen to exemestane. Ann Oncol 2012; 24:674-9. [PMID: 23108951 DOI: 10.1093/annonc/mds464] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Aromatase inhibitors (AIs) may promote ovarian function recovery (OFR). True incidence, predictors and impact on the outcome of OFR are unknown. PATIENTS AND METHODS We carried out a prospective study to assess ovarian function in estrogen receptor (ER)-positive BC patients on tamoxifen who had at least 2 years of chemotherapy-induced amenorrhea (CIA) and postmenopausal E2 levels. Patients switched to exemestane and underwent a series of investigations including vaginal ultrasound, antimullerian hormone, follicle stimulating hormone (FSH), and E2. E2 measurements were made using a clinical assay (direct) and a highly sensitive (indirect) immunoassay for comparison. RESULTS Both E2 assays (indirect versus direct) showed a similar incidence of OFR 32% (95% CI 19.5-44.5) versus 30% (95% CI 17.7-42.3) and median time to OFR 5.4 months (95% CI 1.2-9.6) versus 6.0 months (95% CI 4.8-7.1).On multivariate analysis, the mean age at the start of exemestane treatment was the only marker associated with probability of OFR (OR: 0.44, 0.24-0.78; P = 0.006). According to a receiver operating characteristic (ROC) analysis, age <48 years predicted for OFR (sensitivity: 59%; 1-specificity: 17%; AUC: 0.796; P = 0.001). Patients with OFR had higher mean E2 levels (43.6 versus 5.76 pmol/l; P = 0.001) and a reduced disease-free survival [DFS; HR 9.3 (95% CI 3.3-48.0; P = 0.04)] than those without it. CONCLUSION Even with a clinical and biochemical profile compatible with menopause, switching from tamoxifen to an AI should be avoided in patients <48 with CIA.
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Affiliation(s)
- A Guerrero
- Department of Medical Oncology, Royal Marsden Hospital, London, UK.
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Guerrero-Zotano A, Gavila J, Folkerd E, Ortiz B, Labrador T, Martinez F, Garcia A, Climent MA, Guillem V, Dowsett M, Ruiz A. Incidence and predictors of ovarian function recovery (OFR) in exemestane patients with breast cancer (BC) with chemotherapy-induced amenorrhea (CIA) using two estradiol assays. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Ortiz B, Walls F, Yuste F, Barrios H, Sánchez-Obregón R, Pinelo L. A Convenient Synthesis of Methyl- and Isopropyl-Benzyl Ethers Using Silver(II) Oxide as Reagent. SYNTHETIC COMMUN 2006. [DOI: 10.1080/00397919308009835] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- B. Ortiz
- a Instituto de Química, UNAM, Circuito Exterior, Ciudad Universitaria , Coyoacán , 04510 , México, D. F
| | - F. Walls
- a Instituto de Química, UNAM, Circuito Exterior, Ciudad Universitaria , Coyoacán , 04510 , México, D. F
| | - F. Yuste
- a Instituto de Química, UNAM, Circuito Exterior, Ciudad Universitaria , Coyoacán , 04510 , México, D. F
| | - H. Barrios
- a Instituto de Química, UNAM, Circuito Exterior, Ciudad Universitaria , Coyoacán , 04510 , México, D. F
| | - R. Sánchez-Obregón
- a Instituto de Química, UNAM, Circuito Exterior, Ciudad Universitaria , Coyoacán , 04510 , México, D. F
| | - L. Pinelo
- b C. C. H. Sur, UNAM, Blvd. de las Cataratas y Llanura , Pedregal de San Angel, 04500 , México, D. F
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Garfias Y, Ortiz B, Hernández J, Magaña D, Becerril-Angeles M, Zenteno E, Lascurain R. CD4+ CD30+ T cells perpetuate IL-5 production in Dermatophagoides pteronyssinus allergic patients. Allergy 2006; 61:27-34. [PMID: 16364153 DOI: 10.1111/j.1398-9995.2005.00951.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Airway allergic diseases are regulated by interleukin (IL)-5, which causes infiltration of eosinophils into the bronchial epithelium, and by IL-4 which increases serum immunoglobulin E (IgE) production and promotes CD30 expression on Th cells. CD30 generates a costimulatory signal involved in apoptosis or cell proliferation, depending on the microenvironment. Our aims were: (i) to analyze if CD4+ CD30+ T cells from allergic patients proliferate in response to Dermatophagoides pteronyssinus, and (ii) if upon stimulation this cell population produces IL-4 and IL-5. METHODS Peripheral blood mononuclear cell (PBMC) from 17 allergic rhinitis and mild allergic asthma patients and 12 healthy nonallergic individuals were stimulated with allergen in the presence or absence of anti-IL-4, anti-IL-5 or anti-IL-4Ralpha monoclonal antibodies (mAbs). TdT-mediated dUTP nick end-labeling (TUNEL) assay, 7-aminoactinomycin-D (7-AAD) intercalation, and flow cytometry were used to determine the CD4+ CD30+ blasts percentage, cell proliferation, apoptosis, and intracellular cytokines after 7 culture days. RESULTS Cell proliferation induced with allergen showed that 90% of the allergen-stimulated blasts were CD4+, 50% of which were CD30+. Allergen-stimulated PBMC showed a progressive increase (mean: from 7% to 23%) of CD4+ CD30+IFN-gamma+ and CD4+ CD30+IL-4+ blasts which diminished (mean: 6%) after 5 culture days. In contrast, CD4+ CD30+IL-5+ blasts showed a continuous progression (from 12% to 24%) that maintained after 7 culture days. The vast majority of CD4+ CD30+ blasts were negative to 7-AAD or TUNEL. Additionally, a significant decrease (34%) was observed in the number of CD4+ CD30+ blasts when IL-4 was neutralized. CONCLUSIONS These data suggest that specific allergen stimulation of PBMC isolated from allergic patients generates a nonapoptotic CD4+ CD30+ blast subset that produces IL-5.
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Affiliation(s)
- Y Garfias
- Instituto de Oftalmología, Fundación Conde de Valenciana, Mexico
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Ortiz B, Vázquez C, Martínez C, Giménez J, Sanmartín O, de los Dolores V, Ortega F, Maíquez J, Fliquete MV. [S100 protein as tumoral marker in melanoma patients. Comparative study with sentinel node biopsy and whole body FDG-PET]. Rev Esp Med Nucl 2003; 22:87-96. [PMID: 12646097 DOI: 10.1016/s0212-6982(03)72151-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
PURPOSE Analyze the significance of serum S100 as tumor marker and study it in the sentinel node biopsy and in the whole body FDG-PET studies. MATERIAL AND METHODS 332 melanoma patients diagnosed of cutaneous melanoma were included (41 untreated and 291 previously treated). Serum levels were measured by an immunoradiometric assay. Cut-off value was 0.2 microg/l. RESULTS In the 41 untreated patients, the S100 mean values were: mean 0.36 microg/l, median 0.29 microg/l, with 56.1% of positivities. Serum mean values in stage III and IV were significantly higher than stage I and II (0.489 microg/l vs 0.209 microg/l) (p < 0.05). The mean serum value of S100 in treated patients and without evidence of disease was 0.14 microg/l and the median 0.13 microg/l. Sensitivity and specificity for detection of recurrence or metastases in the follow-up were 76.2% and 88.6%, respectively. There is a correlation of 91.3% between S100 and FDG-PET studies (23 patients). S100 does not provide information on the sentinel lymph node biopsy. CONCLUSIONS S100 is not useful to diagnose melanoma in its early stages but it is a good tumor marker for the follow-up and monitoring of melanoma patients.
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Affiliation(s)
- B Ortiz
- Sección de Marcadores Tumorales, Servicio de Laboratorio, Instituto Valenciano de Oncología, Valencia
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30
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Toscano RA, Hernández-Ortega S, Ortiz B, Sánchez-Obregón R, Walls F, Yuste F. Diethyl 2-[cyano(toluene-4-sulfinyl)methylene]propanedioate and its Diels-Alder adduct with cyclopentadiene. Acta Crystallogr C 2001; 57:1313-5. [PMID: 11706260 DOI: 10.1107/s0108270101012951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2001] [Accepted: 08/01/2001] [Indexed: 11/10/2022] Open
Abstract
The thermal Diels-Alder cycloadditon reaction of diethyl 2-[cyano(toluene-4-sulfinyl)methylene]propanedioate, C(16)H(17)NO(5)S, with cyclopentadiene gave the pure racemates of two of the four possible diastereomers, with a complete pi-facial selectivity and a high (80:20) endo/exo-sulfinyl selectivity. X-ray diffraction studies of diethyl 2-[cyano(toluene-4-sulfinyl)methylene]propanedioate and the major isomer of the cycloaddition product, namely diethyl 3-cyano-3-(toluene-4-sulfinyl)bicyclo[2.2.1]hepta-5-ene-2,2-dicarboxylate, C(21)H(23)NO(5)S, reveal that the conformation of the substituents on the acrylonitrile moiety produces both steric and electronic effects, which affect the stereoselectivity of the reaction.
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Affiliation(s)
- R A Toscano
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Apartado Postal 70-213, México DF 04510, Mexico.
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31
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Cabezas MT, Giménez MJ, Molina MA, Cruz G, Avivar C, Ortiz B. [Iron deficiency anemia and constitutional syndrome]. Enferm Infecc Microbiol Clin 2000; 18:239-40. [PMID: 10974769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Affiliation(s)
- M T Cabezas
- Servicio de Biotecnología, Hospital Poniente, Almería
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32
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Porras F, Lascurain R, Chávez R, Ortiz B, Hernández P, Debray H, Zenteno E. Isolation of the receptor for Amaranthus leucocarpus lectin from murine naive thymocytes. Glycobiology 2000; 10:459-65. [PMID: 10764834 DOI: 10.1093/glycob/10.5.459] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
From murine medullary thymocytes we purified the receptor for the Amaranthus leucocarpus lectin (ALL) using a complex with the biotin-labeled lectin and avidin-agarose as the affinity matrix. Most ALL(+)thymocytes (83%) are naive cells with the CD4(+)CD8(-)CD45RB(+)phenotype. The receptor for this lectin is a 70 kDa glycoprotein that contains 20% of sugar by mass. It is constituted mainly by aspartic and glutamic acids, serine, proline, and glycine; its glycosidic portion contains mainly O-glycosidically linked glycans with Gal, GalNAc and NeuAc residues as well as one N-glycosidically linked glycan per molecule. Ionic strength chromatography revealed that the ALL-thymocyte receptor (ALLTr) is made up by three isoforms, which possess similar amino acid composition but show slight differences in their sugar composition. The N-terminal amino acid residues are blocked both in the receptor and its purified isoforms. Analyses of the receptor's peptides, obtained by trypsin digestion with MALDI-TOF (matrix assisted laser desorption ionization-time of flight), were compared with the relative values obtained from the NCBInr (Swiss-Prot 10/01/99) database. Our results indicate that the peptides of ALLTr show low homology (<17%) with the human KIIA protein, the Fas-associated death domain protein, and the transforming growth factor-beta type II receptor. Our results suggest that the ALL thymocyte receptor could be considered a novel phenotypic marker specific for naive T cells.
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Affiliation(s)
- F Porras
- Departamento de Bioquímica, Instituto Nacional de Enfermedades Respiratorias, Calzada de Tlalpan 4502, 01040 México
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33
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Muñoz V, Sauvain M, Bourdy G, Callapa J, Bergeron S, Rojas I, Bravo JA, Balderrama L, Ortiz B, Gimenez A, Deharo E. A search for natural bioactive compounds in Bolivia through a multidisciplinary approach. Part I. Evaluation of the antimalarial activity of plants used by the Chacobo Indians. J Ethnopharmacol 2000; 69:127-137. [PMID: 10687869 DOI: 10.1016/s0378-8741(99)00148-8] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Thirty extracts of plants traditionally used by the Chacobos, a native community living in the Amazonian part of Bolivia, were screened in vitro and/or in vivo for antimalarial activity. Two of the four species designated as antimalarial, Geissospermum laeve and Maquira coriacea, displayed rather good activity, corroborating their traditional uses. However, they did show a rather high toxicity in vivo. Among twelve species used to cure symptoms relevant to malaria, five showed good activity: Apuleia leiocarpa, Bauhinia guianensis, Nectandra cuspidata, Sparattanthelium amazonum, Tanaecium jaroba. Two species, Qualea paraensis and Sclerolobium aff. guianense, used to treat scabies, showed interesting antimalarial activity in vivo; three other species (Iryanthera laevis, Prunus amplifolia, Pterocarpus aff. amazonum) used for various medicinal purposes, apparently not related with a Plasmodium infection, also showed antimalarial activity. Finally, one species (Derris amazonica) used as a piscicide displayed good in vitro activity, in the same way as one Annonaceae, Guatteria aff. schomburgkiana, used for construction purposes.
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Affiliation(s)
- V Muñoz
- Instituto Boliviano de Biologia de Altura, La Paz, Bolivia
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34
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Toscano RA, Carrasco A, Ortiz B, Sánchez-Obregón R, Walls F, Yuste F. (2 S,S R)- tert-Butyl 2-( p-tolylsulfinylacetyl)pyrrolidine-1-carboxylate. Acta Crystallogr C 1999. [DOI: 10.1107/s0108270199006253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Hernández P, Bacilio M, Porras F, Juarez S, Debray H, Zenteno E, Ortiz B. A comparative study on the purification of the Amaranthus leucocarpus syn. hypocondriacus lectin. Prep Biochem Biotechnol 1999; 29:219-34. [PMID: 10431927 DOI: 10.1080/10826069908544925] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Amaranthus leucocarpus lectin is a homodimeric glycoprotein of 35 kDa per sub-unit, which interacts specifically with N-acetyl-galactosamine. In this work, we compared different glycoproteins that contain Galbeta1-3 GalNAcalpha1-3 Ser/Thr or GalNAcalpha1-3 Ser/Thr in their structure as ligands to purify the A. leucocarpus lectin. From the glycoproteins tested, fetuin was the most potent inhibitor of the hemagglutinating activity and the better ligand for lectin purification; however, the use of desialylated stroma from erythrocytes represented the cheapest method to purify this lectin. O-linked glycans released from the glycoproteins used as affinity matrix and those from different erythrocytes were less inhibitory than parental glycoproteins. The NH2-terminal of the lectin is blocked; moreover, this is the only example of a lectin isolated from this genus to be a glycoprotein. Analysis of the glycoprotein sequences with inhibitory activity for the lectin, showed a different pattern in the O-glycosylation, which confirms that A. leucocarpus lectin recognizes conformation and, probably, distances among O-linked glycans moieties.
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Affiliation(s)
- P Hernández
- Departamento de Bioquímica, Instituto Nacional de Enfermedades Respiratorias, Tlalpan DF, Mexico
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36
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Fajardo EM, Ortiz B, Chávez A, Gaínza N, Izquierdo L, Hernández Y, Labrador I, Alvarez E. [Standardization of the lethal dose 50% of Leptospira interrogans strains used in the control of the leptospirosis cuban vaccine for human use]. Rev Cubana Med Trop 1998; 50:22-6. [PMID: 9842263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
The LD50 of strains of L. interrogans used in the potency assay of the Cuban trivalent leptospiral vaccine intended for human use was standardized. The control of the leptospires content of the cultures by means of the adjusting dilution (10 to 12 leptospires per field) was introduced. That was the key of the standardization of the assay, since it guaranteed the reproducibility of the estimate of the LD50 value for each serogroup: 10(5.98) for canicola, 10(5.60) for icterohaemorrhagiae and 10(6.60) for pomona, with the following limits for an interval of 1 log10: 10(4.98)-10(6.98), 10(4.60)-10(6.60) and 10(5.49)-10(7.49), respectively; whereas for a 95% (+/- 2 SD) confidence interval the values were: 10(5.54)-10(6.19); 10(5.33)-10(5.75) and 10(6.35)-10(6.60), respectively. These values were lower than the previous ones, which means ever more reproducibility. The methodology described proved to be satisfactory for the standardization of the LD50 of the challenge strains and it could also be used for evaluating the virulence of other strains of L. interrogans, including those used for the vaccine production.
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37
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Fontes R, Ortiz B, de Diego A, Sillero A, Günther Sillero MA. Dehydroluciferyl-AMP is the main intermediate in the luciferin dependent synthesis of Ap4A catalyzed by firefly luciferase. FEBS Lett 1998; 438:190-4. [PMID: 9827543 DOI: 10.1016/s0014-5793(98)01301-5] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
It was previously assumed that E x LH2-AMP was the intermediate complex in the synthesis of Ap4A catalyzed by firefly luciferase (EC 1.13.12.7), when luciferin (LH2) was used as cofactor. However, here we show that LH2 is partly transformed, shortly after the onset of the luciferase reaction, to dehydroluciferin (L) with formation of an E x L-AMP complex which is the main intermediate for the synthesis of Ap4A. Formation of three more derivatives of LH2 were also observed, related to the production of light by the enzyme. CoA, a known stimulator of light production, inhibits the synthesis of Ap4A by reacting with the E x L-AMP complex and yielding L-CoA.
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Affiliation(s)
- R Fontes
- Serviço de Química Fisiológica, Faculdade de Medicina, Universidade do Porto, Portugal
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38
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Gómez BL, Figueroa JI, Hamilton AJ, Ortiz B, Robledo MA, Hay RJ, Restrepo A. Use of monoclonal antibodies in diagnosis of paracoccidioidomycosis: new strategies for detection of circulating antigens. J Clin Microbiol 1997; 35:3278-83. [PMID: 9399534 PMCID: PMC230162 DOI: 10.1128/jcm.35.12.3278-3283.1997] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The precise diagnosis of paracoccidioidomycosis, in most cases, is established by direct methods and indirect immunological tests. The latter method is reliant on the identification of the host's humoral responses, which are usually impaired or absent in patients with severe juvenile forms of the disease and in immunocompromised patients. Determining disease activity or assessing treatment responses by measuring antibody levels is difficult, since antibody titer may remain elevated or persist at stationary levels, even in the presence of clinical improvement. Consequently, there is a need for alternative tests aimed at the identification of circulating antigens. A modification of the standard hybridoma production method was used to raise a panel of murine monoclonal antibodies (MAbs) against the yeast form of Paracoccidioides brasiliensis. Of these, MAb PIB, directed against an 87-kDa determinant, was used to develop an inhibition ELISA (inh-ELISA) capable of detecting as little as 5.8 ng of circulating antigen per ml of serum. Sera from 46 patients with paracoccidioidomycosis or other mycoses and sera from healthy individuals were evaluated by the inh-ELISA; overall sensitivity was 80.4% (37 of 46 paracoccidioidomycosis patients tested positive), and specificity compared with that of normal controls from areas of endemicity was 81.4%. The inh-ELISA detected circulating antigen in 100% of patients with the acute form of paracoccidioidomycosis and in 83.3 and 60% of patients with the chronic multifocal and unifocal forms of paracoccidioidomycosis according to the patients' clinical presentation. These results indicate that the inh-ELISA with MAb PIB is effective in the detection of circulating antigen and that this test may be useful for monitoring responses to treatment and establishing disease prognoses.
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Affiliation(s)
- B L Gómez
- Corporación para Investigaciones Biológicas, Medellín, Colombia
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39
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Marín N, Caba A, Ortiz B, Pérez-Tornero E, Martínez L, López M, Fornieles H, Delgado-Rodríguez M. [Socioeconomic determinants and utilization of emergency hospital services]. Med Clin (Barc) 1997; 108:726-9. [PMID: 9324595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Socioeconomic level is a key determinant for health status. It may also influence on the utilization of hospital emergency services, although the factor responsible for that is not known. The main objective of the present report is to assess whether patients using frequently hospital emergency services have one or more variables related to low socioeconomic level. PATIENTS AND METHODS A standardized questionnaire was applied to 800 patients randomly selected from those attending the emergency services of a provincial reference hospital. It was gathered information on: income, education level, employment, loneliness, domestic violence, occupational accidents, and life style. Odds ratios (OR) and their 95% confidence intervals (CI) were estimated. Stepwise logistic regression analysis was used to ascertain the independent predictors for attending for than once to the emergency services. RESULTS In crude analysis, low income and low educational level were significantly related to the use of emergency services (both chi 2 for a trend < 0.05). Alcoholism (OR = 2.3, 95% CI = 1.2-4.7) and domestic violence (OR = 2.6, 95% CI = 0.9-8.1) were also related. Stepwise logistic regression analysis selected income (OR for intermediate level = 1.6, 95% CI = 1.0-2.7, and OR for low level = 2.3, 95% CI = 1.4-3.7) and alcoholism (OR = 2.9, 95% CI = 1.3-6.4) as independent predictors. CONCLUSIONS Patients with low income and/or alcoholism use emergency hospital services more frequently.
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Affiliation(s)
- N Marín
- Servicio de Medicina Interna, Hospital Torrecárdenas, Universidad de Cantabria
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Enríquez RG, Miranda E, Ortiz B, León I, Magos G, Peña A, Reynolds WF, Gnecco D. The unambiguous detection of kaurenic derivatives in aqueous infusions of Montanoa tomentosa by GC-MS and 2D-NMR spectroscopy: an answer to contradictory reports. Planta Med 1996; 62:569-71. [PMID: 17252503 DOI: 10.1055/s-2006-957976] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The qualitative analytical detection of kaurenic compounds kauradienoic (kauradien-9(11),16-dienoic acid) (1), monoginoic (2), and kaurenoic acids (3) in the infusion of Montanoa tomentosa Cerv., was carried out using GC-MS and 2D-NMR methods to resolve contradictory HPLC results from previous reports.
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Affiliation(s)
- R G Enríquez
- Instituto de Química, UNAM, Cd. Universitaria, México, DF 04510
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42
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Wetmur JG, Wong DM, Ortiz B, Tong J, Reichert F, Gelfand DH. Cloning, sequencing, and expression of RecA proteins from three distantly related thermophilic eubacteria. J Biol Chem 1994; 269:25928-35. [PMID: 7929298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Sequences of the recA genes of the highly divergent thermopholic eubacteria Thermus aquaticus (and Thermus thermophilus), Thermotoga maritima, and Aquifex pyrophilus were determined from fragments derived by polymerase chain reaction (PCR) with degenerate primers and from inverse PCR products obtained using unique primers based on the fragment sequences. The source of the PCR products was verified by Southern hybridization. Complete PCR-derived recA genes were cloned into an expression vector regulated by a temperature-sensitive lambda-repressor, and independently derived clones expressing thermostable recA were selected. DNA sequences were verified to be authentic by direct cycle-sequencing of PCR products and/or sequencing of several clones. In contrast to Escherichia coli RecA protein, all the purified thermophilic RecA proteins exhibited single-stranded DNA-dependent ATPase activity optima above 70 degrees C. Phylogenetic analysis of RecA sequences suggested that the thermophilic RecA proteins were at least as different from one another as were Gram-positive organisms, mesophilic Gram-negative organisms, and cyanobacteria. In spite of substantial sequence divergence, interesting characteristics of the thermostable RecA proteins included increased valine content, common amino acid replacements at two highly conserved sites, and an increase in the calculated isoelectric point of approximately a full pH unit.
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Affiliation(s)
- J G Wetmur
- Department of Microbiology, Mount Sinai School of Medicine, New York, New York 10029
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43
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Rodríguez-hernández A, Barrios H, Collera O, Enríquez RG, Ortiz B, Sánchez-obregón R, Walls F, Yuste F, Reynolds WF, Yu M. Isomerization of Perezone into Isoperezone and Preparation of Dihydroisoperezinone. ACTA ACUST UNITED AC 1994. [DOI: 10.1080/10575639408044925] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Ortiz B, Sillero A, Günther Sillero MA. Specific synthesis of adenosine(5')tetraphospho(5')nucleoside and adenosine(5')oligophospho(5')adenosine (n > 4) catalyzed by firefly luciferase. Eur J Biochem 1993; 212:263-70. [PMID: 8444160 DOI: 10.1111/j.1432-1033.1993.tb17658.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Luciferase catalyzes the preferential synthesis of adenosine(5')tetraphospho(5')nucleoside (Ap4N) in the presence of luciferin (LH2), adenosine 5'-[gamma-thio]triphosphate (ATP[gamma S]) and NTP (other than ATP), with very low, or undetectable synthesis of Ap4A or Np4N, because ATP[gamma S] is a good adenylyl donor for the formation of the E-LH2-AMP complex, but a poor adenylyl acceptor from the complex, and NTP, other than ATP, are bad nucleotidyl donors, but good acceptors of the AMP moiety of the E-LH2-AMP complex. Synthesis of the corresponding Ap4N (or Ap5G in the case of p4G were obtained in the presence of ATP[gamma S] and GTP, UTP, CTP, XTP, dTTP, ITP, dGTP, dCTP, dITP, epsilon ATP (epsilon A, N6-ethenoadenosine) or p4G. The yield of synthesis of Ap4N was at least 50% of that theoretically expected. The process can be easily scaled-up, which allows synthesis of at least 1-5 mumol Ap4N. Further evidence for the synthesis of Ap4G from ATP[gamma S] and GTP was obtained by 1H-NMR and 31P-NMR spectroscopy. Synthesis of Ap4N, in yields lower than those above, can also be obtained in the presence of ADP and NTP; synthesis is due to the presence in commercial luciferase of enzymes (adenylate kinase and NDP kinase) that catalyze the synthesis of ATP from ADP and NTP. In the presence of ATP and polyphosphates, luciferase catalyzes the synthesis of a variety of compounds of adenosine 5'-polyphosphates (pnA; n = 3-20 and ApnA; n = 4-16). In the presence of P3 or P4, preferential synthesis of p4A and Ap5A or p5A and Ap6A were obtained, respectively, showing that both polyphosphates accept the adenylyl moiety of the E-LH2-AMP complex. Polyphosphates of chain length 5, 15 and 35 elicited the synthesis of a variety of PnA and ApnA. Ap4A is also split by luciferase in the presence of P3 or P4 (but not in the presence of P5) yielding preferential synthesis of p4A and Ap5A, or p5A and Ap6A, respectively.
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Affiliation(s)
- B Ortiz
- Departamento de Bioquímica, Facultad de Medicina, Universidad Autónoma de Madrid, Spain
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45
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Jiménez Cardoso E, Cuevas Rosas E, Jiménez Cardoso JM, Ortiz B. [In vitro decrease of the cytolytic effect of E. histolytica by inhibition of its phosphofructokinase]. Rev Latinoam Microbiol 1992; 34:275-80. [PMID: 1345117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/25/2023]
Abstract
The C14 radioactive label of PPi analogues was incorporated to E. histolytica after 24 hours of incubation at 37 degrees C; more than 90% of trophozoites remained viable. The PPi dependent phosphofructokinase was isolated in order to determine its kinetic parameters. With PPi, the Km was 18.06 +/- 0.91 micromol/mL-1. Using three different PPi analogues (tetrasodium salts) of (I) 1,1 hydroxy-methyl diphosphonate; (II) 1,1 hydroxy ethylene diphosphonate; (III) 1,1 hydroxy-nonano diphosphonate, KiI was 35.19 +/- 1.74; KiII was 42.65 +/- 0.65, and KiIII 2as 62.81 +/- 0.27 micromol/mL-1. The graphic expression of these results shows that the enzyme was competitively inhibited by the three analogues. When trophozoites were incubated with each one of the three inhibitors, a correlation was observed between the concentration and the cytolytic inhibition with an r = 0.98. Nevertheless, the slope obtained was different for each one of them. The smallest concentration of inhibitor to achieve a 50% lysis inhibition of trophozoites was that of inhibitor III. In addition, it was demonstrated that the incubation of the trophozoites with this inhibitor increased the time needed to destroy CHO cells. We conclude that enzymatic inhibition of the PPi dependent phosphofructokinase caused by the PPi analogues was responsible for the modification of the lytic capacity of trophozoites, possibly by altering the metabolic pathway of carbohydrates.
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Affiliation(s)
- E Jiménez Cardoso
- Laboratorio de Investigación en Parasitología, Hospital Infantil de México Federico Gómez, México D.F
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46
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Lopez GA, Montion-Bewernick D, Martin M, Ortiz B, Russom J, Thomas M. Gender influences the in vitro renin release responses to dopamine and adrenergic receptor blockade in the summer-active ground squirrel Spermophilus lateralis. ACTA ACUST UNITED AC 1992; 102:329-33. [PMID: 1358549 DOI: 10.1016/0742-8413(92)90120-v] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
1. 10(-4) M Dopamine stimulated and 10(-7) M inhibited in vitro resting renin release (RR) only in the female animals. 2. Alpha- or beta-adrenergic blockade prevented the stimulation but not the inhibition of RR by dopamine in the female animals. 3. Membrane receptor mechanisms mediating these changes do not involve alterations in tissue cyclic AMP content. 4. The sensitivity of the juxtaglomerular cells to dopamine challenge is gender dependent during summer activity.
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Affiliation(s)
- G A Lopez
- Department of Biology, California State University, Los Angeles 90032
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Reynolds WF, Lough AJ, Sawyer JF, Enriquez RG, Ortiz B, Walls F. Structure of (4α)-kaura-9(11),16-dien-18-oic acid (grandiflorenic acid), an active ingredient of the Mexican medicinal plant zoapatle. Acta Crystallogr C 1991. [DOI: 10.1107/s0108270190008186] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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48
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Soriano-García M, Walls F, Barrios H, Sánchez-Obregón B, Ortiz B, Díaz E, Toscano RA, Yuste F. Structure and stereochemistry of cacalone acetate, a sesquiterpene. Acta Crystallogr C 1988. [DOI: 10.1107/s0108270188000381] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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49
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Soriano-García M, Walls F, Barrios H, Ortiz B, Sánchez-Obregón R, Toscano RA, Yuste F. Structure and stereochemistry of cacalol methyl ether, a sesquiterpene. Acta Crystallogr C 1987. [DOI: 10.1107/s0108270187090103] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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50
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Soriano-García M, Ortiz B, Toscano RA. Structure of 1-hydroxy-5,11,15-trimethylpentacyclo[9.5.1.02,9.04,8.012,16]heptadec-2(9)-en-3-one, C20H28O2. Acta Crystallogr C 1984. [DOI: 10.1107/s010827018400456x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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