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37 result(s) for "Rieger, Mary A."
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Pollen-Mediated Movement of Herbicide Resistance between Commercial Canola Fields
There is considerable public and scientific debate for and against genetically modified (GM) crops. One of the first GM crops, Brassica napus (oilseed rape or canola) is now widely grown in North America, with proposed commercial release into Australia and Europe. Among concerns of opponents to these crops are claims that pollen movement will cause unacceptable levels of gene flow from GM to non-GM crops or to related weedy species, resulting in genetic pollution of the environment. Therefore, quantifying pollen-mediated gene flow is vital for assessing the environmental impact of GM crops. This study quantifies at a landscape level the gene flow that occurs from herbicide-resistant canola crops to nearby crops not containing herbicide resistance genes.
Quantitative systems toxicology modeling in pharmaceutical research and development: An industry‐wide survey and selected case study examples
Quantitative systems toxicology (QST) models are increasingly being applied for predicting and understanding toxicity liabilities in pharmaceutical research and development. A European Federation of Pharmaceutical Industries and Associations (EFPIA)‐wide survey was completed by 15 companies. The results provide insights into the current use of QST models across the industry. 73% of responding companies with more than 10,000 employees utilize QST models. The most applied QST models are for liver, cardiac electrophysiology, and bone marrow/hematology. Responders indicated particular interest in QST models for the central nervous system (CNS), kidney, lung, and skin. QST models are used to support decisions in both preclinical and clinical stages of pharmaceutical development. The survey suggests high demand for QST models and resource limitations were indicated as a common obstacle to broader use and impact. Increased investment in QST resources and training may accelerate application and impact. Case studies of QST model use in decision‐making within EFPIA companies are also discussed. This article aims to (i) share industry experience and learnings from applying QST models to inform decision‐making in drug discovery and development programs, and (ii) share approaches taken during QST model development and validation and compare these with recommendations for modeling best practices and frameworks proposed in the literature. Discussion of QST‐specific applications in relation to these modeling frameworks is relevant in the context of the recently proposed International Council for Harmonization (ICH) M15 guideline on general principles for Model‐Informed Drug Development (MIDD).
Research on rare diseases: ten years of progress and challenges at IRDiRC
The International Rare Diseases Research Consortium (IRDiRC) is a global collaborative initiative launched in 2011, aimed at tackling rare diseases through research. Here, we summarize IRDiRC’s vision and goals and highlight achievements and prospects after its first decade.The International Rare Diseases Research Consortium (IRDiRC) is a global collaborative initiative launched in 2011, aimed at tackling rare diseases through research. Here, we summarize IRDiRC’s vision and goals and highlight achievements and prospects after its first decade.
Trust and respect in the patient-clinician relationship: preliminary development of a new scale
Background Trust and respect may be an important component of client-provider relationships. This study aimed to develop and report preliminary psychometric analyses of a new brief measure to evaluate a patient’s level of trust and respect for their clinician. The scale was designed to be applicable in multiple healthcare contexts, with a particular focus on mental healthcare. Methods Adult patients completed the study survey in an academic outpatient psychiatric clinic waiting room. Classical and Item Response Theory (IRT) analyses were utilized to examine the adequacy of scale items. Validity was examined in relation to the patient-therapist alliance and to willingness to share private information (social media content) with one’s clinician. Results Beginning with 10 items, a final 8-item version of the measure was created with an internal consistency reliability of .91. Principal components analysis indicated that the scale was best viewed as capturing one overall dimension. A Graded Response Model IRT model indicated that all items contributed information on the latent dimension, and all item curves were not flat at any region. The correlation of the trust/respect total score with the alliance was .53 when respect-related items were deleted from the alliance score. The trust/respect scale was significantly associated with patient willingness to share social media posts with their clinician but the alliance was not. Conclusions The brief measure of patient trust and respect towards their clinician was unidimensional, showed good internal consistency, and was not redundant with existing measures of the alliance. The scale has the potential to be used in a wide variety of healthcare settings.
An evidence-based microscopic hematuria care pathway optimizes decision-making among providers
Introduction and hypothesis Microscopic hematuria (MH) has many etiologies in women and requires specific gynecologic evaluation. We created a standardized MH pathway to serve as an evidence-based decision aid for providers in our practice. Methods Using a modified Delphi process, a multidisciplinary team reviewed existing guidelines for MH diagnosis and treatment to reach consensus on care pathway components. Results Entry into the care pathway by an advanced practice provider is determined by the finding of ≥3 red blood cells per high-power field (RBC/HPF) on microscopic urinalysis. Initial evaluation includes history and physical exam. If there are signs of a gynecologic cause of MH, the conditions are treated and repeat urinalysis is performed in 6 months. If repeat urinalysis shows persistent MH or there are no other apparent causes for MH, we proceed with risk stratification. Through shared decision-making, low-risk patients may undergo repeat urinalysis in 6 months or cystoscopy with urinary tract ultrasound. For intermediate-risk patients, cystoscopy and urinary tract ultrasound are recommended. For high-risk patients, cystoscopy and axial upper urinary tract imaging are recommended. If evaluation is positive, urology referral is provided. If evaluation is negative, low-risk patients are released from care, but intermediate-risk or high-risk patients undergo repeat urinalysis in 12 months. If repeat urinalysis is positive, shared decision-making is used to determine a plan. Conclusions We developed an MH care pathway to standardize care of women with MH across a multidisciplinary group. This pathway serves as a component of value-based care and supports evidence-based care by providers.
Psychiatry Outpatients’ Willingness to Share Social Media Posts and Smartphone Data for Research and Clinical Purposes: Survey Study
Psychiatry research has begun to leverage data collected from patients' social media and smartphone use. However, information regarding the feasibility of utilizing such data in an outpatient setting and the acceptability of such data in research and practice is limited. This study aimed at understanding the outpatients' willingness to have information from their social media posts and their smartphones used for clinical or research purposes. In this survey study, we surveyed patients (N=238) in an outpatient clinic waiting room. Willingness to share social media and passive smartphone data was summarized for the sample as a whole and broken down by sex, age, and race. Most patients who had a social media account and who were receiving talk therapy treatment (74.4%, 99/133) indicated that they would be willing to share their social media posts with their therapists. The percentage of patients willing to share passive smartphone data with researchers varied from 40.8% (82/201) to 60.7% (122/201) depending on the parameter, with sleep duration being the parameter with the highest percentage of patients willing to share. A total of 30.4% of patients indicated that media stories of social media privacy breaches made them more hesitant about sharing passive smartphone data with researchers. Sex and race were associated with willingness to share smartphone data, with men and whites being the most willing to share. Our results indicate that most patients in a psychiatric outpatient setting would share social media and passive smartphone data and that further research elucidating patterns of willingness to share passive data is needed.
Prevalence of Impaired Glucose Tolerance among Children and Adolescents with Marked Obesity
Childhood obesity, now epidemic in the United States, has been accompanied by an increased prevalence of type 2 diabetes among children and adolescents. This study used the two-hour oral glucose-tolerance test, along with measurements of insulin and C peptide, to identify impaired glucose tolerance. Impaired glucose tolerance was present in 25 percent of obese children and 21 percent of obese adolescents; silent type 2 diabetes was identified in 4 percent of obese adolescents. Impaired glucose tolerance was present in 25 percent of obese children. The epidemic of childhood obesity in the United States has been accompanied by a marked increase in the frequency of type 2 diabetes. 1 , 2 In adults, type 2 diabetes develops over a long period, and most, if not all, patients initially have impaired glucose tolerance, which is an intermediate stage in the natural history of type 2 diabetes 3 and predicts the risk of the development of diabetes 4 and cardiovascular disease. 5 With appropriate changes in lifestyle, progression from impaired glucose tolerance to frank diabetes can be delayed or prevented. 6 , 7 Thus, great emphasis has recently been placed on the early detection . . .
Quantifying the Effects of Aging on Morphological and Cellular Properties of Human Female Pelvic Floor Muscles
Age-related pelvic floor muscle (PFM) dysfunction is a critical defect in the progression to pelvic floor disorders (PFDs). Despite dramatic prevalence of PFDs in older women, the underlying pathophysiology of age-related PFM dysfunction remains poorly understood. Using cadaveric specimens, we quantified aging effects on functionally relevant PFM properties and compared PFMs with the appendicular muscles from the same donors. PFMs, obturator internus, and vastus lateralis were procured from younger (N = 4) and older (N = 11) donors with known obstetrical and medical history. Our findings demonstrate that PFMs undergo degenerative, rather than atrophic, alterations. Importantly, age-related fibrotic degeneration disproportionally impacts PFMs compared to the appendicular muscles. We identified intramuscular lipid accumulation as another contributing factor to the pathological alterations of PFMs with aging. We observed a fourfold decrease in muscle stem cell (MuSC) pool of aged relative to younger PFMs, but the MuSC pool of appendicular muscles from the same older donors was only twofold lower than in younger group, although these differences were not statistically significant. Age-related degeneration appears to disproportionally impact PFMs relative to the appendicular muscles from the same donors. Knowledge of tissue- and cell-level changes in aged PFMs is essential to promote our understanding of the mechanisms governing PFM dysfunction in older women.