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Effects of empagliflozin on progression of chronic kidney disease: a prespecified secondary analysis from the empa-kidney trial. Lancet Diabetes Endocrinol 2024; 12:39-50. [PMID: 38061371 PMCID: PMC7615591 DOI: 10.1016/s2213-8587(23)00321-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND Sodium-glucose co-transporter-2 (SGLT2) inhibitors reduce progression of chronic kidney disease and the risk of cardiovascular morbidity and mortality in a wide range of patients. However, their effects on kidney disease progression in some patients with chronic kidney disease are unclear because few clinical kidney outcomes occurred among such patients in the completed trials. In particular, some guidelines stratify their level of recommendation about who should be treated with SGLT2 inhibitors based on diabetes status and albuminuria. We aimed to assess the effects of empagliflozin on progression of chronic kidney disease both overall and among specific types of participants in the EMPA-KIDNEY trial. METHODS EMPA-KIDNEY, a randomised, controlled, phase 3 trial, was conducted at 241 centres in eight countries (Canada, China, Germany, Italy, Japan, Malaysia, the UK, and the USA), and included individuals aged 18 years or older with an estimated glomerular filtration rate (eGFR) of 20 to less than 45 mL/min per 1·73 m2, or with an eGFR of 45 to less than 90 mL/min per 1·73 m2 with a urinary albumin-to-creatinine ratio (uACR) of 200 mg/g or higher. We explored the effects of 10 mg oral empagliflozin once daily versus placebo on the annualised rate of change in estimated glomerular filtration rate (eGFR slope), a tertiary outcome. We studied the acute slope (from randomisation to 2 months) and chronic slope (from 2 months onwards) separately, using shared parameter models to estimate the latter. Analyses were done in all randomly assigned participants by intention to treat. EMPA-KIDNEY is registered at ClinicalTrials.gov, NCT03594110. FINDINGS Between May 15, 2019, and April 16, 2021, 6609 participants were randomly assigned and then followed up for a median of 2·0 years (IQR 1·5-2·4). Prespecified subgroups of eGFR included 2282 (34·5%) participants with an eGFR of less than 30 mL/min per 1·73 m2, 2928 (44·3%) with an eGFR of 30 to less than 45 mL/min per 1·73 m2, and 1399 (21·2%) with an eGFR 45 mL/min per 1·73 m2 or higher. Prespecified subgroups of uACR included 1328 (20·1%) with a uACR of less than 30 mg/g, 1864 (28·2%) with a uACR of 30 to 300 mg/g, and 3417 (51·7%) with a uACR of more than 300 mg/g. Overall, allocation to empagliflozin caused an acute 2·12 mL/min per 1·73 m2 (95% CI 1·83-2·41) reduction in eGFR, equivalent to a 6% (5-6) dip in the first 2 months. After this, it halved the chronic slope from -2·75 to -1·37 mL/min per 1·73 m2 per year (relative difference 50%, 95% CI 42-58). The absolute and relative benefits of empagliflozin on the magnitude of the chronic slope varied significantly depending on diabetes status and baseline levels of eGFR and uACR. In particular, the absolute difference in chronic slopes was lower in patients with lower baseline uACR, but because this group progressed more slowly than those with higher uACR, this translated to a larger relative difference in chronic slopes in this group (86% [36-136] reduction in the chronic slope among those with baseline uACR <30 mg/g compared with a 29% [19-38] reduction for those with baseline uACR ≥2000 mg/g; ptrend<0·0001). INTERPRETATION Empagliflozin slowed the rate of progression of chronic kidney disease among all types of participant in the EMPA-KIDNEY trial, including those with little albuminuria. Albuminuria alone should not be used to determine whether to treat with an SGLT2 inhibitor. FUNDING Boehringer Ingelheim and Eli Lilly.
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Yamada N, Yamagata K, Yamaguchi M, Yamaji Y, Yamamoto A, Yamamoto S, Yamamoto S, Yamamoto T, Yamanaka A, Yamano T, Yamanouchi Y, Yamasaki N, Yamasaki Y, Yamasaki Y, Yamashita C, Yamauchi T, Yan Q, Yanagisawa E, Yang F, Yang L, Yano S, Yao S, Yao Y, Yarlagadda S, Yasuda Y, Yiu V, Yokoyama T, Yoshida S, Yoshidome E, Yoshikawa H, Young A, Young T, Yousif V, Yu H, Yu Y, Yuasa K, Yusof N, Zalunardo N, Zander B, Zani R, Zappulo F, Zayed M, Zemann B, Zettergren P, Zhang H, Zhang L, Zhang L, Zhang N, Zhang X, Zhao J, Zhao L, Zhao S, Zhao Z, Zhong H, Zhou N, Zhou S, Zhu D, Zhu L, Zhu S, Zietz M, Zippo M, Zirino F, Zulkipli FH. Impact of primary kidney disease on the effects of empagliflozin in patients with chronic kidney disease: secondary analyses of the EMPA-KIDNEY trial. Lancet Diabetes Endocrinol 2024; 12:51-60. [PMID: 38061372 DOI: 10.1016/s2213-8587(23)00322-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND The EMPA-KIDNEY trial showed that empagliflozin reduced the risk of the primary composite outcome of kidney disease progression or cardiovascular death in patients with chronic kidney disease mainly through slowing progression. We aimed to assess how effects of empagliflozin might differ by primary kidney disease across its broad population. METHODS EMPA-KIDNEY, a randomised, controlled, phase 3 trial, was conducted at 241 centres in eight countries (Canada, China, Germany, Italy, Japan, Malaysia, the UK, and the USA). Patients were eligible if their estimated glomerular filtration rate (eGFR) was 20 to less than 45 mL/min per 1·73 m2, or 45 to less than 90 mL/min per 1·73 m2 with a urinary albumin-to-creatinine ratio (uACR) of 200 mg/g or higher at screening. They were randomly assigned (1:1) to 10 mg oral empagliflozin once daily or matching placebo. Effects on kidney disease progression (defined as a sustained ≥40% eGFR decline from randomisation, end-stage kidney disease, a sustained eGFR below 10 mL/min per 1·73 m2, or death from kidney failure) were assessed using prespecified Cox models, and eGFR slope analyses used shared parameter models. Subgroup comparisons were performed by including relevant interaction terms in models. EMPA-KIDNEY is registered with ClinicalTrials.gov, NCT03594110. FINDINGS Between May 15, 2019, and April 16, 2021, 6609 participants were randomly assigned and followed up for a median of 2·0 years (IQR 1·5-2·4). Prespecified subgroupings by primary kidney disease included 2057 (31·1%) participants with diabetic kidney disease, 1669 (25·3%) with glomerular disease, 1445 (21·9%) with hypertensive or renovascular disease, and 1438 (21·8%) with other or unknown causes. Kidney disease progression occurred in 384 (11·6%) of 3304 patients in the empagliflozin group and 504 (15·2%) of 3305 patients in the placebo group (hazard ratio 0·71 [95% CI 0·62-0·81]), with no evidence that the relative effect size varied significantly by primary kidney disease (pheterogeneity=0·62). The between-group difference in chronic eGFR slopes (ie, from 2 months to final follow-up) was 1·37 mL/min per 1·73 m2 per year (95% CI 1·16-1·59), representing a 50% (42-58) reduction in the rate of chronic eGFR decline. This relative effect of empagliflozin on chronic eGFR slope was similar in analyses by different primary kidney diseases, including in explorations by type of glomerular disease and diabetes (p values for heterogeneity all >0·1). INTERPRETATION In a broad range of patients with chronic kidney disease at risk of progression, including a wide range of non-diabetic causes of chronic kidney disease, empagliflozin reduced risk of kidney disease progression. Relative effect sizes were broadly similar irrespective of the cause of primary kidney disease, suggesting that SGLT2 inhibitors should be part of a standard of care to minimise risk of kidney failure in chronic kidney disease. FUNDING Boehringer Ingelheim, Eli Lilly, and UK Medical Research Council.
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Deshpande I, Kanwar A, Swyers K, Garza A, Litten K. Improving Access to Home Blood Pressure Monitors at a Federally Qualified Health Center. J Pharm Technol 2023; 39:75-81. [PMID: 37051283 PMCID: PMC10084406 DOI: 10.1177/87551225231156741] [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] [Indexed: 03/13/2023] Open
Abstract
Background: Self-monitoring of blood pressure (BP) clinically decreases BP. However, cost can limit access, especially in underserved populations. Objective: This mixed-methods pilot study aims to determine the impact of providing home BP monitors free of charge to patients at a federally qualified health center (FQHC) by quantifying the effect on BP and surveying patients to measure satisfaction and engagement. Methods: One hundred eighty patients with clinically diagnosed hypertension received BP monitors. Patient charts were reviewed to collect demographics and office BP readings 3 months before and after receiving a monitor. A 13-question phone survey was conducted to a sample of patients addressing satisfaction and engagement. Answers were based on a Likert scale and dichotomous yes/no. Results were analyzed with descriptive statistics and paired t tests. Results: The chart review demonstrated a significant mean decrease in systolic BP by 5.44 mm Hg ( P < 0.001, −8.03 to −2.84) and a mean decrease in diastolic BP by 2.70 mm Hg ( P < 0.001, −4.08 to −1.32) after the intervention. For those included who responded to the survey (13%), there was a significant mean increase in the frequency of checking BP per week by 1.5 Likert points ( P < 0.00001, −1.0 to −1.9), and a majority (57.8%) felt slightly or much more active in their health care in addition to other benefits. Conclusion: Providing BP monitors to FQHC patients free of charge may have contributed to a significantly decreased office BP, improved engagement, and satisfaction. This program removed cost barriers and allowed patients to be more active in their health care.
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Affiliation(s)
- Isha Deshpande
- The University of Texas at Austin College of Pharmacy, Austin, TX, USA
| | - Amrita Kanwar
- The University of Texas at Austin College of Pharmacy, Austin, TX, USA
| | - Kendra Swyers
- The University of Texas at Austin College of Pharmacy, Austin, TX, USA
| | - Aida Garza
- CommUnityCare Health Centers, Austin, TX, USA
| | - Kathryn Litten
- The University of Texas at Austin College of Pharmacy, Austin, TX, USA
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Roscoe C, Moczygemba LR, Garza A, Linedecker-Smith S, Simien L, Siañez M. Perceptions of collaborative care team members on facilitators and barriers to care and glycosylated hemoglobin level as a diabetes quality metric at a federally qualified health center in Texas. J Am Pharm Assoc (2003) 2021; 61:S57-S67. [PMID: 33485814 DOI: 10.1016/j.japh.2020.12.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 11/26/2020] [Accepted: 12/20/2020] [Indexed: 11/16/2022]
Abstract
OBJECTIVES Facilitators and barriers to collaborative patient care have been explored in previous studies. Few studies provide information about collaborative care team (CCT) members' roles in treating patients with diabetes and how CCT members should be evaluated for their contributions to diabetes care. To describe the roles and responsibilities of CCT members at CommUnityCare (CUC), a federally qualified health center in Central Texas; identify the facilitators and barriers affecting referrals to other CCT members within CUC; explore the facilitators and barriers to collaborative patient care at CUC; and assess CCT members' perceptions of quality metrics for diabetes care. METHODS A cross-sectional design was used. Data was collected by a survey and semistructured interviews of CCT members. The survey (32 questions) assessed roles and responsibilities, including the percentage of time spent on clinic activities, referral criteria, perceptions of quality diabetes care, and facilitators and barriers to care. The interview (32 questions) gathered a description of the CCT member's role, referral process, and ideas for diabetes quality metrics. Descriptive statistics and content analysis were used for data analysis. RESULTS Twenty-two CCT members (4 diagnosticians, 4 clinical pharmacists, 4 behavioral health professionals, 4 registered dietitians, 2 community health workers, and 4 care managers) participated in this study. Co-location (54%) and professional relationships with coworkers (32%) facilitated referrals to other CCT members. Appointment availability (32%) and lack of referral criteria knowledge (27%) were barriers to other CCT member referrals. Seventy-five percent of the dietitians and care managers thought that the glycosylated hemoglobin (A1C) level was a good quality metric for diabetes care, followed by 50% of the clinical pharmacists, 25% of the behavioral health counselors, and 0% of the community health workers and diagnosticians. CONCLUSION Co-location and professional relationships facilitated referrals to CCT members, whereas lack of CCT member availability and lack of referral criteria knowledge were barriers to CCT referrals. Metrics other than the lowering of the A1C level should be further explored to assess the quality of diabetes care.
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Abstract
Background: In the United States, opioid overdoses account for 130 deaths daily. Barriers to obtaining naloxone, the drug-of-choice for opioid overdose reversal, include limited education, access, and perceptions of provider judgement. Objectives: This study aimed to assess the efficacy of mailed education about naloxone, with or without a live teaching seminar, to patients at risk for opioid overdose. Methods: This observational study was conducted in a federally qualified health system. A phone presurvey was administered to patients on long-term opioid therapy or with a diagnosis of opioid use disorder to assess opioid overdose-related knowledge. Subjects were mailed a handout about naloxone and an invitation to receive naloxone at no cost at a seminar. Three-month phone postsurveys were conducted. The primary outcome was change in mean knowledge score from presurvey to postsurvey. Secondary outcomes included scores on individual survey items, naloxone prescriptions provided, and overdose reversals reported. Results: Ninety-four patients received mailed education. Sixty-two subjects took presurveys and 23 took 3-month follow-up surveys. Five subjects attended the live seminar. The mean cumulative knowledge score improved by 8.7% from the presurvey to the postsurvey. During the study period, one new naloxone prescription was written and one overdose reversal was reported. Conclusion: Direct-to-patient mailed education slightly improved knowledge regarding naloxone and opioid overdose response, and it may have led to one successful overdose reversal. Mailing education to a larger population of patients at risk for opioid overdose may be necessary to observe a substantial clinical impact.
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Affiliation(s)
| | | | - Aida Garza
- CommUnityCare Health Centers, Austin, TX, USA
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Shin J, Moczygemba LR, Barner JC, Garza A, Linedecker-Smith S, Srinivasa M. Patient experience with clinical pharmacist services in Travis County Federally Qualified Health Centers. Pharm Pract (Granada) 2020; 18:1751. [PMID: 32377276 PMCID: PMC7194041 DOI: 10.18549/pharmpract.2020.2.1751] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Accepted: 04/13/2020] [Indexed: 11/14/2022] Open
Abstract
Background Positive patient experiences with care have been linked to improved health outcomes. Patient experience surveys can provide feedback about the level of patient-centered care provided by clinical pharmacists and information about how to improve services. Objectives Study objectives are: 1) To describe patient experience with clinical pharmacist services in a federally qualified health center (FQHC). 2) To determine if demographic or health-related factors were associated with patient experience. Methods This cross-sectional survey included adult patients who were English or Spanish speaking, and completed a clinical pharmacist visit in March or April 2018. Patient experience was evaluated, on a 5-point Likert scale (1 = strongly disagree to 5 = strongly agree), with 10 items using four domains: pharmacist-patient interaction information provision, support for self-care, and involvement in decision making. In addition, one item was used to rate the overall experience. Demographic and health-related variables were also collected. Eligible patients completed the survey after their clinical pharmacist visit. Descriptive and inferential statistics, as well as Cronbach's alpha for scale reliability, were employed. Results Respondents (N=99) were 55.4 (SD=12.1) years and 53.1% were women. Overall, patients rated their experiences very high with the 10-item scale score of 4.8 (SD=0.4) out of 5 points and the overall experience rating of 4.9 (SD=0.4) out of 5 points. With the exception of race, there were no differences between patient experience and demographic and health-related variables. African Americans had significantly (p=0.0466) higher patient experience scores compared to Hispanics. Conclusions Patients receiving care in a FQHC highly rated their experience with clinical pharmacists. This indicates that clinical pharmacists provided a high level of patient-centered care to a diverse group.
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Affiliation(s)
- Jennifer Shin
- PharmD. Clinical Pharmacist Specialist. Memorial Hermann-Texas Medical Center. Houston, TX (United States).
| | - Leticia R Moczygemba
- PharmD, PhD. Associate Professor. Health Outcomes Division, College of Pharmacy, University of Texas. Austin, TX (United States).
| | - Jamie C Barner
- PhD. Professor and Division Head. Health Outcomes Division, College of Pharmacy, University of Texas. Austin, TX (United States).
| | - Aida Garza
- PharmD, CDE, BCACP. Associate Pharmacy Director, Pharmacy Residency Program Director. CommUnityCare Health Centers. Austin, TX (United States).
| | - Sara Linedecker-Smith
- PharmD, BCACP. Clinical Pharmacist. CommUnityCare Health Centers. Austin, TX (United States).
| | - Maaya Srinivasa
- PharmD, BCACP, CDE. Clinical Pharmacist. CommUnityCare Health Centers. Austin, TX (United States).
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Tomasino SF, Hamilton MA, Garza HCA, Buen M, Chan Myers H, Garza A, Gonzales E, Kallander K, Rodriguez A, Stahnke P, To T. Modification to the AOAC Sporicidal Activity of Disinfectants Test (Method 966.04): Collaborative Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/89.5.1373] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
In an effort to improve AOAC Method 966.04, the Sporicidal Activity of Disinfectants Test, selected modifications to the procedure were evaluated in a collaborative study. Method 966.04 is used to generate efficacy data to support the product registration of sporicides and sterilants. The method is a carrier-based test that provides a qualitative measure of product efficacy against spores of Bacillus subtilis and Clostridium sporogenes. The use of garden soil extract and the lack of standard procedures for the enumeration of spores and neutralization of the test chemicals have been considered problematic for many years. The proposed modifications were limited to the B. subtilis and hard surface carrier (porcelain penicylinder) components of the method. The study included the evaluation of a replacement for soil extract nutrient broth and an establishment of a minimum spore titer per carrier, both considered crucial for the improvement and utilization of the method. Additionally, an alternative hard surface material and a neutralization confirmation procedure were evaluated. To determine the equivalence of the proposed alternatives to the standard method, 3 medium/carrier combinations, (1) soil extract nutrient broth/porcelain carrier (current method), (2) nutrient agar amended with 5 g/mL manganese sulfate/porcelain carrier, and (3) nutrient agar amended with 5 g/mL manganese sulfate/stainless steel carrier were analyzed for carrier counts, HCl resistance, efficacy, quantitative efficacy, and spore wash-off. The test chemicals used in the study represent 3 chemical classes and are commercially available antimicrobial liquid products: sodium hypochlorite (bleach), glutaraldehyde, and a combination of peracetic acid and hydrogen peroxide. Four laboratories participated in the study. The results of the spore titer per carrier, HCl resistance, efficacy, and wash-off studies demonstrate that amended nutrient agar in conjunction with the porcelain is comparable to the current method, soil extract nutrient broth/porcelain. The nutrient agar method is simple, inexpensive, reproducible, and provides an ample supply of high quality spores. Due to the current use of porcelain carriers for testing C. sporogenes, it is advisable to retain the use of porcelain carriers until stainless steel can be evaluated as a replacement carrier material for Clostridium. The evaluation of stainless steel for Clostridium has been initiated by the Study Director. Study Director recommendations for First Action revisions are provided in a modified method.
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Affiliation(s)
- Stephen F Tomasino
- U.S. Environmental Protection Agency, Office of Pesticide Programs, Microbiology Laboratory, Environmental Science Center, Ft. Meade, MD 20755-5350
| | - Martin A Hamilton
- U.S. Environmental Protection Agency, Office of Pesticide Programs, Microbiology Laboratory, Environmental Science Center, Ft. Meade, MD 20755-5350
| | - H Chan A Garza
- Montana State University, Center for Biofilm Engineering, Bozeman, MT 59717-3980
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Peterson J, Hinds A, Garza A, Barner J, Hill L, Nguyen M, Lai P, Gums T. Impact of Physician-Pharmacist Covisits at a Primary Care Clinic in Patients With Uncontrolled Diabetes. J Pharm Pract 2018; 33:321-325. [PMID: 30428760 DOI: 10.1177/0897190018807374] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE A popular method for enhancing medication management within a patient-centered medical home (PCMH) is the physician-pharmacist collaborative management (PPCM) model. To improve efficiency of health-care delivery within 4 federally qualified health centers (FQHCs), the PPCM model was implemented through coordinated physician-pharmacist covisits. OBJECTIVE To evaluate the impact of physician-pharmacist covisits on clinical outcomes among patients with uncontrolled diabetes. METHODOLOGY This was a retrospective multicenter cohort study including adults (≥18 years old) with uncontrolled type 1 or type 2 diabetes (hemoglobin A1c [HbA1c] ≥ 8 %) who had at least one covisit between January 1, 2013, and October 1, 2016. The primary clinical metric was mean change in HbA1c from baseline to follow-up. Secondary outcomes included adherence to select American Diabetes Association (ADA) Standards of Medical Care. RESULTS A total of 106 patients were included in this analysis. Patients who were managed in the PPCM model experienced a significant decrease in mean change in HbA1c from baseline to follow-up (-1.75 [2.63], P < .001). There was no significant difference in the proportion of patients receiving recommended vaccinations or cardiovascular (CV) risk reduction medications. CONCLUSION The results suggest that physician-pharmacist covisits may improve glucose control in patients with uncontrolled diabetes.
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Affiliation(s)
- Jasmine Peterson
- Department of Pharmacy, CommUnityCare Federally Qualified Health Centers-North Central, Austin, TX, USA
| | - April Hinds
- Department of Pharmacy, CommUnityCare Federally Qualified Health Centers-North Central, Austin, TX, USA.,Department of Pharmacy, The University of Texas at Austin, Austin, TX, USA
| | - Aida Garza
- Department of Pharmacy, CommUnityCare Federally Qualified Health Centers-North Central, Austin, TX, USA
| | - Jamie Barner
- Department of Pharmacy, The University of Texas at Austin, Austin, TX, USA
| | - Lucas Hill
- Department of Pharmacy, CommUnityCare Federally Qualified Health Centers-North Central, Austin, TX, USA.,Department of Pharmacy, The University of Texas at Austin, Austin, TX, USA
| | - Michelle Nguyen
- Department of Pharmacy, CommUnityCare Federally Qualified Health Centers-North Central, Austin, TX, USA
| | - Phillip Lai
- Department of Pharmacy, CommUnityCare Federally Qualified Health Centers-North Central, Austin, TX, USA
| | - Tyler Gums
- Department of Pharmacy, The University of Texas at Austin, Austin, TX, USA
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Affiliation(s)
- K. Yadav
- Falstaff Brewing Corporation, St. Louis, Missouri
| | - H. Weissler
- Falstaff Brewing Corporation, St. Louis, Missouri
| | - A. Garza
- Falstaff Brewing Corporation, St. Louis, Missouri
| | - J. Gurley
- Falstaff Brewing Corporation, St. Louis, Missouri
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Linedecker SJ, Barner J, Ridings-Myhra J, Garza A, Lopez D, McIntyre W. Development of a direct observation of procedural skills rubric for fourth-year pharmacy students in ambulatory care rotations. Am J Health Syst Pharm 2017; 74:S17-S23. [PMID: 28213383 DOI: 10.2146/ajhp150940] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
PURPOSE The development and implementation of a pilot program requiring direct observation of procedural skills (DOPS) assessments of fourth-year pharmacy students during ambulatory care rotations are described. METHODS All fourth-year pharmacy students at the University of Texas at Austin College of Pharmacy who engaged in a required advanced pharmacy practice experience (APPE) in ambulatory care during the period January-May 2015 participated in a DOPS pilot program. The DOPS process required students to select a patient for a medication-focused "workup," evaluate the selected patient case, present the results to a preceptor, and conduct a preceptor-supervised patient interview. Preceptors used a DOPS rubric to rate students' performance in 12 domains. At the time of submission of DOPS evaluation forms, program participants were invited to complete online surveys soliciting feedback on the effectiveness of the DOPS evaluation process and other aspects of the program. RESULTS A total of 81 students and preceptors participated in the DOPS pilot program, with 47 DOPS evaluation forms submitted; the median ± S.D. score was 90.4% ± 29.7%. Results of the online surveys indicated that the overall perception of the DOPS program was positive, with majorities of both students and preceptors supporting DOPS incorporation into the curriculum for fourth-year pharmacy students. CONCLUSION The DOPS rubric was a useful tool for evaluating clinical skills of APPE students on ambulatory care rotations.
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Affiliation(s)
| | - Jamie Barner
- College of Pharmacy, University of Texas at Austin, Austin, TX
| | | | - Aida Garza
- College of Pharmacy, University of Texas at Austin, Austin, TX
| | - Debra Lopez
- College of Pharmacy, University of Texas at Austin, Austin, TX
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Barnes DM, Garza EC, Garza A, Castellanos M, Hibner M. A Temporal Evaluation of Pain Improvement in Women with Chronic Pelvic Pain After Adhesiolysis Procedure. J Minim Invasive Gynecol 2016. [DOI: 10.1016/j.jmig.2016.08.768] [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: 11/17/2022]
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Chung N, Rascati K, Lopez D, Jokerst J, Garza A. Impact of a clinical pharmacy program on changes in hemoglobin A1c, diabetes-related hospitalizations, and diabetes-related emergency department visits for patients with diabetes in an underserved population. J Manag Care Spec Pharm 2014; 20:914-9. [PMID: 25166290 PMCID: PMC10437343 DOI: 10.18553/jmcp.2014.20.9.914] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [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: 11/05/2022]
Abstract
BACKGROUND Diabetes mellitus is associated with substantial morbidity and mortality. With the rise in prevalence of diabetes, there has been an increased need for clinical pharmacy services focused on diabetes management in ambulatory clinics. However, more data IS needed to determine the overall impact that clinical pharmacists have on preventing diabetes-related inpatient admissions and emergency department (ED) visits for patients with diabetes, especially in an underserved population. OBJECTIVES To assess the impact of clinical pharmacy services on the change in hemoglobin A1c measurements, the number of diabetes-related hospitalizations, and the number of diabetes-related ED visits for patients with uncontrolled diabetes. METHODS This was a retrospective study that evaluated outcomes for patients referred to a clinical pharmacist for management of diabetes, compared with patients who were not seen by a clinical pharmacist. Adult patients aged between 18 and 89 years with a diagnosis of type 1 or type 2 diabetes mellitus were identified, using the electronic medical records from CommUnityCare outpatient clinics in central Texas during the period July 1, 2007, through July 1, 2011. Patients enrolled had poor glycemic control, defined as an A1c ≥9% at baseline (index), with at least 3 visits with a clinical pharmacist or 3 visits to usual care. Patients with at least 1 year of pre-index data, 1 year of post-index follow-up, and a post-index A1c measure were included in the study. Propensity score (PS) matching was used to create a 1:1 cohort. T-tests were used to calculate results for the main outcome variables (change in A1c, change in number of diabetes-related hospitalizations, and change in number of diabetes-related ED visits). In addition, general linear models (GLM) were used to control for baseline demographic and clinical characteristics. RESULTS A total of 782 patients met inclusion criteria, 557 in the usual care (control) group and 225 in the clinical pharmacy (intervention) group. PS matching provided a 1:1 matched sample of 220 patients per cohort. When assessing the change in the number of diabetes-related hospitalizations from the pre-index year to the post-index year, patients in the control group had an increase of 8 hospitalizations (8 visits per 220 patients, mean = 0.036, SD = 0.284), while the intervention group had a decrease of 1 hospitalization (-1 visit per 220 patients, mean = -0.005, SD=0.278). Both the t-test (P = 0.06) and GLM model (P = 0.06) indicated that the difference was statistically significant. When assessing the change in the number of diabetes-related ED visits from the pre-index year to the post-index year, we found patients in the control group had an increase of 16 ED visits (16 visits per 220 patients, mean = 0.073, SD = 0.584), while the intervention group had an increase of 4 ED visits (4 visits per 220 patients, mean = -0.018, SD=0.641). Both the t-test (P = 0.18) and GLM model (P = 0.28) indicated that the difference was not statistically significant. A1c levels were reduced in the post-index period for both groups. For the control group, A1c reduction was 1.50 (from 11.17 to 9.67, SD = 2.49). For the intervention group, A1c reduction was 1.90 (from 11.09 to 9.19, SD = 2.44). Both the t-test (P = 0.04) and GLM model (P = 0.05) indicated that the A1c difference was statistically significant. CONCLUSIONS Underserved patients with baseline uncontrolled diabetes who were managed by a clinical pharmacist in the outpatient setting had a higher decrease in A1c compared with usual care. The changes in diabetes-related hospitalizations and diabetes-related ED visits were in the hypothesized direction, but the comparison for ED visits was not statistically significant.
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Affiliation(s)
- Nancy Chung
- University of Houston College of Pharmacy, 1441 Moursund St., Houston, TX 77030.
| | - Karen Rascati
- University of Houston College of Pharmacy, 1441 Moursund St., Houston, TX 77030.
| | - Debra Lopez
- University of Houston College of Pharmacy, 1441 Moursund St., Houston, TX 77030.
| | - Jason Jokerst
- University of Houston College of Pharmacy, 1441 Moursund St., Houston, TX 77030.
| | - Aida Garza
- University of Houston College of Pharmacy, 1441 Moursund St., Houston, TX 77030.
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Danielson JR, Daykin EP, Diaz AB, Doty DL, Frogget BC, Furlanetto MR, Gallegos CH, Gibo M, Garza A, Holtkamp DB, Hutchins MS, Perez C, Peña M, Romero VT, Shinas MA, Teel MG, Tabaka LJ. Measurement of an explosively driven hemispherical shell using 96 points of optical velocimetry. ACTA ACUST UNITED AC 2014. [DOI: 10.1088/1742-6596/500/14/142008] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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14
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Nelsen A, Gupta S, Trautner BW, Petersen NJ, Garza A, Giordano TP, Naik AD, Rodriguez-Barradas MC. Intention to adhere to HIV treatment: a patient-centred predictor of antiretroviral adherence. HIV Med 2013; 14:472-80. [PMID: 23551395 DOI: 10.1111/hiv.12032] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/07/2013] [Indexed: 11/30/2022]
Abstract
OBJECTIVES Despite the effectiveness of highly active antiretroviral therapy (HAART), HIV remains a major cause of mortality in the USA, largely as a result of poor HIV treatment adherence. In this study we assessed the association between five patient-centred factors and adherence to HIV treatment. METHODS We surveyed 244 adults at two HIV clinics in Houston, Texas between October 2009 and April 2010. Participants were given a questionnaire and their charts were reviewed for clinical data. Survey items assessed the following factors: self-assessed HIV knowledge, awareness of disease biomarkers, intention to adhere to HIV treatment, health literacy and decision-making style. The primary outcome measure was HAART adherence during the previous month. Logistic regressions were performed to calculate the effect of each factor on adherence. RESULTS All participants had HIV/AIDS and were on HAART at enrolment. Eight per cent of participants were female, 57% were African-American and 16% were Hispanic. Mean age was 58.1 years. Sixty-eight per cent were adherent to HAART during the last month. On univariate analysis, a preference for wanting choices, correct knowledge of recent HIV viral load level, and intention to adhere to HIV treatment were significantly associated with adherence. On multivariate analysis, only intention to adhere to HIV treatment remained statistically significant after adjusting for other factors (odds ratio 2.2; 95% confidence interval 1.1 to 4.3). CONCLUSIONS Intention to adhere to HIV treatment was significantly associated with self-reported adherence to HAART. Interventions that bolster patients' intentions to adhere to HIV treatment during clinical encounters may improve adherence to HAART and HIV control.
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Affiliation(s)
- A Nelsen
- Houston Health Services Research and Development Center of Excellence, Michael E. DeBakey VA Medical Center, Houston, TX, USA
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15
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Perez-Pena E, Chian J, Gutierrez A, Garza A, Pascual A, Robles A, Rojas F, Perez-Luna E. 35 MILD OVARIAN STIMULATION IN ART AND ELECTIVE DOUBLE EMBRYO TRANSFER (E-DET). A PROSPECTIVE NON RANDOMIZED CONTROLLED TRIAL. Reprod Biomed Online 2010. [DOI: 10.1016/s1472-6483(10)62453-4] [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: 11/29/2022]
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16
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Garza A, Huang LZ, Son JH, Winzer-Serhan UH. Expression of nicotinic acetylcholine receptors and subunit messenger RNAs in the enteric nervous system of the neonatal rat. Neuroscience 2008; 158:1521-9. [PMID: 19095047 DOI: 10.1016/j.neuroscience.2008.11.027] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2008] [Revised: 11/13/2008] [Accepted: 11/18/2008] [Indexed: 10/21/2022]
Abstract
In the enteric nervous system (ENS) excitatory nicotinic cholinergic transmission is mediated by neuronal nicotinic acetylcholine receptors (nAChR) and is critical for the regulation of gastric motility. nAChRs are ligand-gated pentameric ion channels found in the CNS and peripheral nervous system. The expression of heteromeric nAChR and receptor subunit mRNAs was investigated in the neonatal rat ENS using receptor autoradiography with the radiolabeled ligand (125)I-epibatidine, and in situ hybridization with subtype specific probes for ligand binding alpha (alpha2, alpha3, alpha4, alpha5, alpha6) and structural beta (beta2, beta3, beta4) subunits. The results showed strong nicotine sensitive binding of (125)I-epibatidine around the stomach, and small and large intestines. The binding was partially displaced by A85380, a nicotinic ligand which differentiates between different heteromeric nAChR subtypes, suggesting a mixed receptor population. Radioactive in situ hybridization detected expression of alpha3, alpha5, alpha7, beta2 and beta4 mRNA in the myenteric plexus of the stomach, and small and large intestines. In the submucosal plexus of the small and large intestines expression of alpha3, alpha5 and beta4 was found in some ganglia. There was no signal for alpha4, alpha6 and beta3 in the ENS but positive hybridization signal for alpha2 transcripts was seen in some areas of the small intestines. However, the signal was not associated with any ganglion cells. The results confirm the presence of heteromeric nAChRs in the ENS similar to those found in the peripheral nervous system, with the majority being composed of alpha3(alpha5)beta4, and a few alpha3beta2 nAChRs. In addition, homomeric alpha7 nAChRs could be present.
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Affiliation(s)
- A Garza
- Department of Neuroscience and Experimental Therapeutics, Texas A&M University System, College Station, TX 77843-1114, USA
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17
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Rick O, Welter D, Landa S, Kirschneck M, Garza A, Cieza A. The WHO-ICF Core Set for breast cancer: Evaluation of the first results. Geburtshilfe Frauenheilkd 2008. [DOI: 10.1055/s-0028-1088799] [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] Open
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18
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Garza A, Lackner A, Aye P, D’Souza M, Martin P, Borda J, Tweardy D, Weinstock J, Griffiths J, Robinson P. Substance P receptor antagonist reverses intestinal pathophysiological alterations occurring in a novel ex-vivo model of Cryptosporidium parvum infection of intestinal tissues derived from SIV-infected macaques. J Med Primatol 2008; 37:109-15. [DOI: 10.1111/j.1600-0684.2007.00251.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [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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19
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Garza A. Lost Smiles Recovered. Acad Emerg Med 2004. [DOI: 10.1197/j.aem.2004.02.524] [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]
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20
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Abstract
Ambulance crashes are a significant safety issue both to the EMTs and to patients transported in the vehicle. Safety issues are dependent on the environment and may be different in rural and urban settings. Ambulance crashes reported to the State EMS bureau during the years of 1993 to 1997 were evaluated. Counties with >250,000 population were considered urban. State population was 2 million urban and 2.8 million rural. Two investigators determined first if the crash was urban or rural. Outcome information was extracted on the degree of injury, citations given, and information on the ambulance and other vehicle condition. In addition, independent variables of weekend versus weekday, day versus night, posted speed, weather, road condition (wet versus dry), intersections, and use of seat belts were extracted. Results were compared using a 2-tailed Chi-square or Fisher's exact with significance at P <.05. Relative risks and 95% confidence intervals were calculated for each variable. There were a total of 183 Ambulance crashes, 115 urban (19/million pop/yr), and 68 rural (8/million pop/yr). Significantly lower percentage of injury crashes occurred in the urban setting (OR = 0. 49, 95% CI = 0.24 to 0.98) with fewer of these considered "severe" (OR = 0.0, 95% CI = 0.0 to 0.73). Citations were more likely to be issued to the urban ambulance driver (OR = 4.95, 95% CI = 1.09 to 45. 70) and the other urban vehicle driver (OR = 3.65, 95% CI = 1.37 to 11.31). However, the urban ambulance was less likely to be damaged (OR = 0.24, 95% CI = 0.10 to 0.55), disabled (OR = 0.41, 95% CI = 0. 20 to 0.84), or towed (OR = 0.40, 95% CI = 0.20 to 0.83). In the urban setting fewer vehicles were traveling in areas with posted speeds >54 mph (OR = 0.24, 95% CI = 0.06 to 0.78) and nonrestrained people were less likely to be injured (OR = 0.28, 95% CI = 0.06 to 1. 25). For injured persons there was no difference in independent variables in the urban versus rural settings. Although the rate of ambulance injuries was greater in the urban environment, the severity of the injuries was worse in the rural environments where crashes occurred at higher posted speeds. In the rural setting nonrestrained passengers were more likely to be injured.
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Affiliation(s)
- S J Weiss
- University of California, Davis Medical Center, Sacramento, CA, USA
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21
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Abstract
Myxococcus xanthus develops species-specific multicellular fruiting bodies. Starting from a uniform mat of cells, some cells enter into nascent fruiting body aggregates, whereas other cells remain outside. The cells within the fruiting body differentiate from rods into spherical, heat-resistant spores, whereas the cells outside the aggregates, called peripheral cells, remain rod-shaped. Early developmentally regulated genes are expressed in peripheral cells as well as by cells in the fruiting bodies. By contrast, late developmental genes are only expressed by cells within the nascent fruiting bodies. The data show that peripheral cells begin to develop, but are unable to express genes that are switched on later than about 6 h after the start of development. All of the genes whose expression is limited to the fruiting body are dependent on C-signaling either directly or indirectly, whereas the genes that are equally expressed in peripheral rods and in fruiting body cells are not. One of the C-signal-dependent and spatially patterned operons is called dev, and the dev operon has been implicated in the process of sporulation. It is proposed that expression of certain genes, including those of the dev operon, is limited to the nascent fruiting body because fruiting body cells engage in a high level of C-signaling. Peripheral cells do less C-signaling than fruiting body cells, because they have a different spatial arrangement and are at lower density. As a consequence, peripheral cells fail to express the late genes necessary for spore differentiation.
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Affiliation(s)
- B Julien
- Departments of Biochemistry and Developmental Biology, Stanford University School of Medicine, Stanford, CA 94305-5329, USA
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22
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Ernst AA, Weiss SJ, Nick TG, Casalletto J, Garza A. Domestic violence in a university emergency department. South Med J 2000; 93:176-81. [PMID: 10701783] [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: 02/15/2023]
Abstract
BACKGROUND We attempted to determine the prevalence and demographics of domestic violence (DV) among male and female patients in a university emergency department (ED). METHODS The validated Index of Spouse Abuse (ISA) was used. Patients aged 18 years or older seen during 28 randomly selected 4-hour shifts were eligible. RESULTS Of the 97 participants in the study, 57 were female. One man and 3 women were victims of present physical DV, with 1 male and 2 female victims of present nonphysical abuse. Three of the 40 men and 22 of the 57 women had been victims of past physical violence. One man and 15 women had been victims of past nonphysical abuse. Alcohol use, suicidal ideation, family history, and psychiatric history were all strongly correlated with DV. CONCLUSIONS The prevalence of DV past was significantly higher in the females. Present violence was more rare and less than that reported in other ED studies.
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Affiliation(s)
- A A Ernst
- Department of Emergency Medicine, Vanderbilt University, Nashville, Tenn., USA
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Weiss S, Garza A, Casaletto J, Stratton M, Ernst A, Blanton D, Nick TG. The out-of-hospital use of a domestic violence screen for assessing patient risk. PREHOSP EMERG CARE 2000; 4:24-7. [PMID: 10634278 DOI: 10.1080/10903120090941588] [Citation(s) in RCA: 10] [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: 10/23/2022]
Abstract
OBJECTIVES To determine the following: 1) whether a Domestic Violence Scene Assessment Screen (DVSAS) is accurate at predicting domestic violence (DV) when compared with results on the validated Abuse Assessment Screen (AAS), and 2) whether EMTs can perform accurately on a DVSAS after they have finished a transport so as not to interfere with routine care. METHODS All patients transported by ambulance from domestic environments (i.e., home) by an urban EMS system were included in the study. A ten-question screen was developed to assess whether a domestic environment had a high risk of having DV (DVSAS). A positive answer to any of the questions was considered to be a positive result on the screen. A trained observer with no clinical duties rode on the ambulance for randomized shifts during a two-month period. The observer completed the DVSAS while at the scene, then the patient, if able, completed the AAS. After finishing the transport, the EMT completed the DVSAS based on his or her memory of the scene. Results of the observer DVSAS were compared with the results of the EMT DVSAS and with the AAS. RESULTS A total of 43 transports from domestic scenes were included in the study. The observer DVSAS alone was positive in five cases (12%), the EMT DVSAS alone was positive in five cases (12%), and both were positive in seven cases (17%). Agreement between the EMT and the observer yielded a kappa of 0.56 adjusted for chance. Of 15 (42%) patients able to complete the AAS, one (7%) was positive on the AAS alone, four (27%) were positive on the observer DVSAS alone, and three (29%) were positive on both. The observer DVSAS agreed with the AAS results in ten of 15 (66%) of cases. When compared with the AAS, the observer DVSAS had a sensitivity of 75%, specificity of 55%, positive predictive value of 38%, and negative predictive value of 86%. CONCLUSION Emergency medical technicians can complete the DVSAS at the end of a transport with good agreement with results obtained by an independent observer at the scene. The DVSAS is able to reflect the results of the AAS with moderate to good agreement.
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Affiliation(s)
- S Weiss
- University of California, Davis, Medical Center, USA.
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24
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Balasubramanyam A, McKay S, Nadkarni P, Rajan AS, Garza A, Pavlik V, Herd JA, Jahoor F, Reeds PJ. Ethnicity affects the postprandial regulation of glycogenolysis. Am J Physiol 1999; 277:E905-14. [PMID: 10567019 DOI: 10.1152/ajpendo.1999.277.5.e905] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We investigated the effect of nutrient intake on glucose metabolism in normal Mexican-Americans (n = 6) and European-Americans (n = 6). Subjects were studied after an 18-h fast and after 5-6 h of ingestion of hourly meals that supplied 6.35 or 12.75 micromol glucose. kg(-1). min(-1). Endogenous glucose production (EGP), gluconeogenesis (GNG), and glycogenolysis (GLY) were estimated by mass isotopomer analysis with [U-(13)C]glucose infusions. Fasting EGP, GNG, and GLY did not differ between the groups. Food ingestion lowered the molar rate of GNG by only 31%. However, while consuming the lower quantity of nutrients, Mexican-Americans had higher plasma glucose (P < 0.05), a 39% higher rate of EGP (P < 0.05), and a 68% (P < 0.025) higher rate of GLY than the European-Americans. At the higher intake, EGP and GLY were suppressed completely in both groups. There was a linear relationship between insulin concentrations, EGP, and GLY in both groups, but the slope of the line was significantly (P < 0.05) greater in the European-Americans. We conclude that the sensitivity of GLY to nutrient intake differs between ethnic groups and that this may play a role in the increased predisposition of Mexican-Americans to type II diabetes.
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Affiliation(s)
- A Balasubramanyam
- Division of Endocrinology, Baylor College of Medicine, Houston, Texas, USA.
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25
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Abstract
Infection of humans with HIV-1 has previously been independently shown to result in the generation of autoantibodies (AAbs) reactive with immunoglobulin Fab fragments (Heidelberg), and with autoantibodies to T-cell receptors (TCRs) (Tucson). Here, we carry out epitope mapping studies of affinity-purified AAbs to Fab fragments prepared from individual HIV-positive patients for their capacity to bind recombinant constructs and peptide-defined epitopes modeling TCR and Ig light chains. Some affinity-purified autoantibodies reacted strongly with TCRs expressed by intact T-cells, and recombinant Valpha/Vbeta constructs as well as with certain synthetic peptide epitopes. The binding reactions of affinity-purified AAbs of individual patients were distinct, and the AAb preparations consisted of populations of polyclonal lgs as reflected in specificity and isotype. AAb pools from individual patients all bound particular regions of TCR and Ig chains defined by comprehensive peptide synthesis including the CDR1 and Fr3 segments of the variable domains and the joining segment/switch peptide. In addition, other reactivities to restricted regions of alpha, beta and lambda light chains were documented. These results substantiate the cross-reactivity of TCR and Ig-Fab determinants, and are consistent with the hypothesis that autoantibodies arising as a consequence of HIV infection can have an immunomodulatory role.
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MESH Headings
- Amino Acid Sequence
- Antibodies, Anti-Idiotypic/chemistry
- Antibodies, Anti-Idiotypic/immunology
- Antibodies, Anti-Idiotypic/metabolism
- Antibody Affinity
- Antigen-Antibody Reactions
- Autoantibodies/chemistry
- Autoantibodies/immunology
- Autoantibodies/metabolism
- Autoantigens/chemistry
- Autoantigens/immunology
- Autoantigens/metabolism
- Cross Reactions
- Enzyme-Linked Immunosorbent Assay
- Epitopes/chemistry
- Epitopes/immunology
- Epitopes/metabolism
- HIV Infections/immunology
- HIV-1
- Humans
- Immunoglobulin Fab Fragments/chemistry
- Immunoglobulin Fab Fragments/immunology
- Immunoglobulin Fab Fragments/metabolism
- Molecular Sequence Data
- Peptide Fragments/chemistry
- Peptide Fragments/immunology
- Peptide Fragments/metabolism
- Receptors, Antigen, T-Cell, alpha-beta/chemistry
- Receptors, Antigen, T-Cell, alpha-beta/immunology
- Receptors, Antigen, T-Cell, alpha-beta/metabolism
- Recombinant Fusion Proteins/chemistry
- Recombinant Fusion Proteins/immunology
- Recombinant Fusion Proteins/metabolism
- Sequence Alignment
- Sequence Homology, Amino Acid
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Affiliation(s)
- J J Marchalonis
- Microbiology and Immunology, College of Medicine, Arizona Health Sciences Center, P.O. Box 24-5049, Tucson AZ 85724, USA.
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Forshner L, Garza A. Childhood vaccines: an update. RN 1999; 62:32-6; quiz 37. [PMID: 10223057] [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: 02/12/2023]
Abstract
Immunizations are the best weapon against diseases that once devastated children, but far too few kids are getting them as needed. To help you protect your pediatric patients, we present the newest guidelines on which vaccines to give, when and how to give them, and to whom.
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Affiliation(s)
- L Forshner
- St. Joseph's Medical Center, Yonkers, N.Y., USA
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Liang B, Zhang Z, Inserra P, Jiang S, Lee J, Garza A, Marchalonis JJ, Watson RR. Injection of T-cell receptor peptide reduces immunosenescence in aged C57BL/6 mice. Immunology 1998; 93:462-8. [PMID: 9659216 PMCID: PMC1364122 DOI: 10.1046/j.1365-2567.1998.00470.x] [Citation(s) in RCA: 7] [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: 11/20/2022] Open
Abstract
Previous studies established that retrovirally infected young mice produced large amounts of autoantibodies to certain T-cell receptor (TCR) peptides whose administration diminished retrovirus-induced immune abnormalities. C57BL/6 young (4 weeks) and old (16 months) female mice were injected with these same synthetic human TCR V beta 8.1 or 5.2 peptides. Administration of these autoantigenic peptides to old mice prevent immunosenescence, such as age-related reduction in splenocyte proliferation and interleukin-2 (IL-2) secretion. TCR V beta peptide injection into young mice had no effect on T- or B-cell mitogenesis and IL-4 production while modifying tumour necrosis factor-alpha (TNF-alpha), IL-6, and interferon-gamma (IFN-gamma) secreted by mitogen-stimulated spleen cells. TCR V beta injection also retarded the excessive production of IL-4, IL-6 and TNF-alpha induced by ageing. These data suggest that immune dysfunction and abnormal cytokine production, induced by the ageing process, were largely prevented by injection of selected TCR V beta CDR1 peptides.
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Affiliation(s)
- B Liang
- Arizona Prevention Center, Tucson 85724, USA
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28
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Marchalonis JJ, Garza A, Landsperger WJ, Schluter SF, Wang AC. Binding of human IgG myeloma proteins to autologous T-cell receptor determinants. Crit Rev Immunol 1998; 17:497-506. [PMID: 9419436] [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
IgG myeloma proteins (MPs) produced by monoclonal plasma cells derived from B2 lymphocytes have been reported to bind to various autoantigens but the binding generally has been of low affinity. Moreover, T cells from some multiple myeloma patients can respond specifically to idiotypes of their own paraproteins. We analyzed the capacity of more than 20 human IgG MP to bind, a recombinant single-chain molecule containing complete V beta 8.1 and V alpha 1 structures, sets of synthetic peptide epitopes corresponding to a complete TCR beta chain, and a set of CDR1 epitopes corresponding to 24 human V beta gene products, and intact monoclonal T cells. Two of 20 MPs bound strongly to the recombinant TCR. Five of the same set, including these, bound to a synthetic epitope corresponding to the CDR1 segment. On a mass basis, the binding was approximately 1000-fold greater than that of pooled polyclonal IgG. The binding activity was confined to the Fab fragment and was specifically inhibitable by appropriate peptide determinants. Spectrotypic analysis using a set of CDR1 epitopes indicated that individual proteins showed characteristic binding patterns ranging from highly specific to relatively promiscuous. Highly reactive MPs also bound to TCR on intact cells in immunocytofluorescence by flow cytometry. These results are consistent with the relatively frequent occurrence of autoantibodies to TCR determinants and indicate that MPs can be derived from this autoantibody subset.
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Affiliation(s)
- J J Marchalonis
- Department of Microbiology and Immunology, College of Medicine, University of Arizona, Tucson 85724, USA
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Garza A, Forshner L. Hepatitis update. RN 1997; 60:39-43; quiz 44. [PMID: 9429541] [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] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- A Garza
- Department of Family Practice, St. Joseph's Medical Center, Yonkers, N.Y., USA
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Abstract
The ability of the E6 protein from high risk human papillomaviruses (HPVs) to degrade p53 via the ubiquitin pathway plays a major role in the development of cervical carcinomas. We have previously generated cell hybrids between a p53 null peripheral neuroepithelioma (PNET) cell line and a cervical carcinoma HeLa cell line which exhibits efficient E6-mediated degradation of p53. All of the resulting hybrids expressed HPV 18 E6 from the HeLa parent and some of the hybrids additionally expressed HPV 16 E6. Surprisingly, in spite of abundant E6 expression, the hybrids expressed relatively high steady-state levels of the wild-type p53 protein. We then examined the hybrids to determine whether other components of the E6-mediated degradation pathway were missing or nonfunctional. Specifically, we determined that the E6-associated protein (E6-AP), essential for E6-mediated degradation, was expressed. We further verified that these hybrids had a functional ubiquitination pathway, which suggests that this phenomenon is not due to a general defect in this pathway. We therefore conclude that other unidentified, possibly cell-specific factors can play a role in the E6-mediated degradative process and may act to inhibit this process.
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Affiliation(s)
- J S Isaacs
- Department of Biochemistry and Biophysics and the UNC-Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill 27599, USA
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Landsperger WJ, Schluter SF, Garza A, Yocum DE, Marchalonis JJ. Fine specificity analysis of autoantibodies to T cell receptor CDR1 segments in rheumatoid arthritis. Ann N Y Acad Sci 1997; 815:459-61. [PMID: 9186696 DOI: 10.1111/j.1749-6632.1997.tb52101.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- W J Landsperger
- Baxter Biotech Hyland Division, Duarte, California 91010, USA
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32
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Marchalonis JJ, Ampel NM, Schluter SF, Garza A, Lake DF, Galgiani JN, Landsperger WJ. Analysis of autoantibodies to T-cell receptors among HIV-infected individuals: epitope analysis and time course. Clin Immunol Immunopathol 1997; 82:174-89. [PMID: 9000486 DOI: 10.1006/clin.1996.4290] [Citation(s) in RCA: 12] [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] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Individuals seropositive for human immunodeficiency virus type 1 (HIV) express elevated levels of autoantibodies (AAbs) directed against recombinant T-cell receptors (TCRs) and synthetic peptide epitopes duplicating beta chain markers. We performed longitudinal studies of anti-TCR AAbs in HIV-1-infected individuals, making comparisons with uninfected sera and sera from other individuals infected with a nonviral agent. We determined levels of autoantibodies by titration using enzyme-linked immunosorbent assay (ELISA) and developed a means for characterizing "autoantibody CDR recognition spectrotypes" for individual sera. Antibody levels against certain defined synthetic epitopes were substantially elevated in HIV-infected subjects relative to reactivities by control groups. Individual sera showed relatively high AAb levels to a subset of CDR1 peptide epitopes. Two patients who subsequently developed AIDS showed particular reactivity to Vbeta2.1, 8.1, 10.1, and 22.1 epitopes. Our results show that production AAbs to TCR Vbeta epitopes is a general consequence of HIV infection. The response is individual but shows some restriction and shifts in AAb subpopulations often occur with time.
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Affiliation(s)
- J J Marchalonis
- College of Medicine, University of Arizona, Tucson, Arizona, 85724, USA
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Abstract
Neuron-specific enolase has been used by others as a marker for the identification of cells of presumed neural crest origin in the human eye. The contributions of neural crest to the ocular tissues have been studied most definitively in the chicken embryo. The developing chicken eye was therefore chosen to further investigate the usefulness of neuron-specific enolase as a neural crest marker. Chicken embryos of various development stages were processed for the immunohistochemical localization of neuron-specific enolase with two different specific antisera. The nerve fiber layer of the neural retina and the optic nerve reacted positively. The first weak staining was found at day 10; it became rapidly stronger during the next 2 days. A positive reaction was also observed in the ciliary ganglion. In contrast, no staining was found in tissues of known neural crest origin. Cornea, sclera, trabecular tissues and iris stroma remained negative throughout the developmental stages studied. Therefore, neuron-specific enolase can not be used as a reliable marker of neural crest derived cells, at least in the chicken embryo. Unexpectedly the lens epithelium showed moderate neuron-specific enolase activity beginning on day 5. alpha-Enolase is an important crystallin in the lens of some species, particularly the turtle. It has also been demonstrated to be present in the chicken lens in a fairly high concentration. It is possible, that neuron-specific or gamma-enolase has a similar role in the chicken lens.
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Affiliation(s)
- J Zwaan
- Department of Ophthalmology, University of Texas Health Science Center at San Antonio 78284-6230
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Garza A. Screening strategies for lead poisoning. JAMA 1993; 270:2555; author reply 2556-7. [PMID: 8230634 DOI: 10.1001/jama.270.21.2555b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Schulte PA, Boeniger M, Walker JT, Schober SE, Pereira MA, Gulati DK, Wojciechowski JP, Garza A, Froelich R, Strauss G. Biologic markers in hospital workers exposed to low levels of ethylene oxide. Mutat Res 1992; 278:237-51. [PMID: 1373860 DOI: 10.1016/s0165-1218(10)80003-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.0] [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: 12/26/2022]
Abstract
Operators of hospital sterilizers that use ethylene oxide were studied to determine if there was a relationship between exposure and a battery of biological markers. A total of 73 workers from nine hospitals in the United States (U.S.) and one hospital in Mexico City was evaluated for ethylene oxide exposure during four months prior to collection of peripheral blood. The frequency of hemoglobin adducts (p = 0.0006) and sister-chromatid exchanges (SCEs) (p = 0.002) increased with cumulative exposure to ethylene oxide in U.S. subjects when controlling by regression analysis for various confounding factors, including cigarette smoking. Hemoglobin adducts, but not SCEs, were also increased in Mexican subjects (p = 0.0012). Chromosomal micronuclei showed no consistent relationship with exposure. The U.S. study participants were classified by four-month cumulative exposure levels of 10 ppm-h (n = 8), greater than 0 to 32 ppm-h (n = 32) and greater than 32 ppm-h (n = 11) of ethylene oxide exposure. The group with an exposure of greater than 32 ppm-h had an increased frequency of hemoglobin adducts (p = 0.002) and SCEs (p = 0.0001) compared to the nonexposed group. The estimated mean of the 8-h time-weighted average (8-h TWA) exposure levels for the highest U.S. exposure group (greater than 32 ppm-h) was 0.16 +/- 0.007 ppm (mean +/- SD). A similar exposure-related differential was observed in the Mexican subjects for hemoglobin adducts (p = 0.04) but not for SCEs. The latter finding may have been due to longer shipping times for the specimens in the cytogenetic assays. The estimated mean of the 8-h TWA exposure levels for the highest Mexican exposure group (greater than 32 ppm-h) was 0.48 +/- 0.08 ppm. This study is the third to suggest that exposures less than the U.S. OSHA standard of 1 ppm 8-h TWA result in biochemical and biologic changes. It is not known whether these changes may be indicative of increased risk of disease; however, they do appear to reflect exposure to relatively low levels of ethylene oxide. The exact meaning of these changes is unknown.
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Affiliation(s)
- P A Schulte
- Industrywide Studies Branch, National Institute for Occupational Safety and Health, Cincinnati, OH 45226
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Garza A, Mutchinick O, Cordero JF, Burse VW. International collaboration in a cluster investigation. Am J Public Health 1991; 81:1077-8. [PMID: 1906686 PMCID: PMC1405719 DOI: 10.2105/ajph.81.8.1077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Lam KW, Townsend D, Garza A, Li CY, Yam LT. Comparison of tartrate resistant acid phosphatase in a giant cell bone tumor and a spleen infiltrated with hairy cells. Clin Biochem 1990; 23:335-40. [PMID: 2225457 DOI: 10.1016/0009-9120(90)80065-q] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [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: 12/30/2022]
Abstract
Acid phosphatase (E.C.3.1.3.2) in a giant cell bone tumor and a spleen infiltrated with hairy cells was extracted by citrate buffer and then by 0.3 mol/L NaCl. The cationic acid phosphatase in the crude extract was isolated by CM-cellulose chromatography, and further separated by high pressure liquid chromatography. The majority of the tartrate resistant acid phosphatase in the hairy cell spleen was unabsorbed on CM-cellulose and was insensitive to iron. A much larger portion of the acid phosphatase in the bone tumor, than in the spleen, was cationic and was eluted from the column by 0.8 mol/L NaCl. The cationic acid phosphatase was further separated into consecutive peaks of acid phosphatases with different sensitivity to iron. A major portion of acid phosphatase in the giant cell bone tumor was enhanced by iron, while the amounts of iron-enhanced and iron-insensitive acid phosphatase were about the same in the spleen. The differences of the phosphatases in these two types of pathologic specimens indicate the occurrence of two types of enzymes with different biological significance.
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Affiliation(s)
- K W Lam
- Department of Ophthalmology, University of Texas Health Science Center, San Antonio 78284-7779
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Hecht RM, Garza A, Lee YH, Miller MD, Pisegna MA. Nucleotide sequence of the glyceraldehyde-3-phosphate dehydrogenase gene from Thermus aquaticus YT1. Nucleic Acids Res 1989; 17:10123. [PMID: 2602126 PMCID: PMC335259 DOI: 10.1093/nar/17.23.10123] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Affiliation(s)
- R M Hecht
- Department of Biochemical and Biophysical Sciences, University of Houston, TX 77204-5500
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Abstract
We used data from the population-based Metropolitan Atlanta Congenital Defects Program to study the epidemiology of the early amnion rupture spectrum of defects. For the period 1968 through 1982, we identified 45 patients among 388,325 live births, for a birth prevalence rate of 1.16 per 10,000. The prevalence for male infants was 0.91 and for female infants, 1.44. The defects occurred 1.76 times more often in blacks than in whites (95% confidence interval 0.98, 3.13). Infants of young, black multigravidas (less than 20 years, more than one pregnancy) showed the highest rate (6.2), and infants of older, black multigravidas showed the lowest rate (0.5) (rate ratio = 12.4, 95% confidence interval 4.2, 36.4). These findings suggest that young, black multigravidas are at much higher risk than are older, black multigravidas of having infants with this spectrum of defects. Ascertainment (diagnostic) differences between hospitals probably account for some of the racial discrepancy in birth prevalence, but they do not explain the maternal age effects in black multigravidas. Because the higher rates for blacks probably reflect more accurate diagnoses, the findings also suggest that a closer estimate of the true birth prevalence may be about 3 per 10,000 live births.
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Affiliation(s)
- A Garza
- Division of Birth Defects and Developmental Disabilities, Centers for Disease Control, Atlanta
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Mesta AM, Avalos C, Barbachano J, Carmona M, Garza A, Lares F, Salazar G, Vallejo O, Ortigoza J. [Klebsiella pneumoniae as a primary pathogenic agent]. Rev Latinoam Microbiol 1985; 27:1-6. [PMID: 3892617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Davins R, Henslee W, Garza A, Knöfel H, Prinzbach H. Röntgenstrukturanalysen von [12+2]- bzw. [4+2]-addukten des 7,9-di-t-butyl-sesquifulvalens. Tetrahedron Lett 1974. [DOI: 10.1016/s0040-4039(01)91753-8] [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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Kobal VM, Gibson DT, Davis RE, Garza A. X-ray determination of the absolute stereochemistry of the initial oxidation product formed from toluene by Pseudomonas puida 39-D. J Am Chem Soc 1973; 95:4420-1. [PMID: 4708391 DOI: 10.1021/ja00794a048] [Citation(s) in RCA: 79] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Blackmore T, Bruce MI, Stone FGA, Davis RE, Garza A. Insertion reactions of acetylenes with a cyclopentadienyl–ruthenium phosphine hydride: structure of a butadienyl–ruthenium complex. ACTA ACUST UNITED AC 1971. [DOI: 10.1039/c29710000852] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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