24 results on '"Lea Albert"'
Search Results
2. Ush regulates hemocyte-specific gene expression, fatty acid metabolism and cell cycle progression and cooperates with dNuRD to orchestrate hematopoiesis.
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Jonathan Lenz, Robert Liefke, Julianne Funk, Samuel Shoup, Andrea Nist, Thorsten Stiewe, Robert Schulz, Yumiko Tokusumi, Lea Albert, Hartmann Raifer, Klaus Förstemann, Olalla Vázquez, Tsuyoshi Tokusumi, Nancy Fossett, and Alexander Brehm
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Genetics ,QH426-470 - Abstract
The generation of lineage-specific gene expression programmes that alter proliferation capacity, metabolic profile and cell type-specific functions during differentiation from multipotent stem cells to specialised cell types is crucial for development. During differentiation gene expression programmes are dynamically modulated by a complex interplay between sequence-specific transcription factors, associated cofactors and epigenetic regulators. Here, we study U-shaped (Ush), a multi-zinc finger protein that maintains the multipotency of stem cell-like hemocyte progenitors during Drosophila hematopoiesis. Using genomewide approaches we reveal that Ush binds to promoters and enhancers and that it controls the expression of three gene classes that encode proteins relevant to stem cell-like functions and differentiation: cell cycle regulators, key metabolic enzymes and proteins conferring specific functions of differentiated hemocytes. We employ complementary biochemical approaches to characterise the molecular mechanisms of Ush-mediated gene regulation. We uncover distinct Ush isoforms one of which binds the Nucleosome Remodeling and Deacetylation (NuRD) complex using an evolutionary conserved peptide motif. Remarkably, the Ush/NuRD complex specifically contributes to the repression of lineage-specific genes but does not impact the expression of cell cycle regulators or metabolic genes. This reveals a mechanism that enables specific and concerted modulation of functionally related portions of a wider gene expression programme. Finally, we use genetic assays to demonstrate that Ush and NuRD regulate enhancer activity during hemocyte differentiation in vivo and that both cooperate to suppress the differentiation of lamellocytes, a highly specialised blood cell type. Our findings reveal that Ush coordinates proliferation, metabolism and cell type-specific activities by isoform-specific cooperation with an epigenetic regulator.
- Published
- 2021
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3. RNA inhibits dMi-2/CHD4 Chromatin Binding and Nucleosome Remodelling
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Lea Albert, Thorsten Stiewe, Joel P. Mackay, Jonathan Lenz, Mara John, Roland K. Hartmann, Ho-Ryung Chung, Yichen Zhong, Clemens Thölken, Olalla Vázquez, Oliver Roßbach, Markus Gößringer, Andrea Nist, Alexander Brehm, and Ikram Ullah
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History ,Polymers and Plastics ,RNase P ,Chemistry ,Chromatin binding ,RNA ,Industrial and Manufacturing Engineering ,Cell biology ,Chromatin ,Nucleosome mobilization ,Transcription (biology) ,Nucleosome ,Business and International Management ,human activities ,ICLIP - Abstract
The ATP-dependent nucleosome remodeller Mi-2/CHD4 broadly modulates epigenetic landscapes to repress transcription and to maintain genome integrity. Here we use individual nucleotide resolution crosslinking and immunoprecipitation (iCLIP) to show that Drosophila Mi-2 associates with thousands of mRNA molecules in vivo. Biochemical data reveal that recombinant dMi-2 preferentially binds to G-rich RNA molecules using two intrinsically disordered regions of previously undefined function. Pharmacological inhibition of transcription and RNase digestion approaches establish that RNA inhibits the association of dMi-2 with chromatin. We also show that RNA inhibits dMi-2-mediated nucleosome mobilization by competing with the nucleosome substrate. Importantly, this activity is shared by CHD4, the human homolog of dMi-2, strongly suggesting that RNA-mediated regulation of remodeller activity is an evolutionary conserved mechanism. Our data support a model in which RNA serves to protect actively transcribed regions of the genome from dMi-2/CHD4mediated establishment of repressive chromatin structures.
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- 2021
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4. Ush regulates hemocyte-specific gene expression, fatty acid metabolism and cell cycle progression and cooperates with dNuRD to orchestrate hematopoiesis
- Author
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Jonathan Lenz, Julianne Funk, Robert Liefke, Samuel Shoup, Nancy Fossett, Thorsten Stiewe, Alexander Brehm, Lea Albert, Olalla Vázquez, Robert A. Schulz, Klaus Förstemann, Tsuyoshi Tokusumi, Andrea Nist, Hartmann Raifer, and Yumiko Tokusumi
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Cancer Research ,Hemocytes ,Cellular differentiation ,Amino Acid Motifs ,Hemocyte differentiation ,Gene Expression ,QH426-470 ,White Blood Cells ,0302 clinical medicine ,Animal Cells ,RNA interference ,Invertebrate Genomics ,Gene expression ,Medicine and Health Sciences ,Transcriptional regulation ,Drosophila Proteins ,Protein Isoforms ,RNA-Seq ,Cell Cycle and Cell Division ,Promoter Regions, Genetic ,Genetics (clinical) ,Regulation of gene expression ,0303 health sciences ,Drosophila Melanogaster ,Transcriptional Control ,Cell Cycle ,Fatty Acids ,Gene Expression Regulation, Developmental ,Eukaryota ,Cell Differentiation ,Animal Models ,Genomics ,Cell cycle ,Cell biology ,Insects ,Enhancer Elements, Genetic ,Experimental Organism Systems ,Cell Processes ,Chromatin Immunoprecipitation Sequencing ,RNA Interference ,Drosophila ,Cellular Types ,Mi-2 Nucleosome Remodeling and Deacetylase Complex ,Research Article ,Gene isoform ,Arthropoda ,Cell Survival ,Immune Cells ,Immunology ,Biology ,Research and Analysis Methods ,Cell Line ,03 medical and health sciences ,Model Organisms ,Genetics ,Animals ,Gene Regulation ,Epigenetics ,Enhancer ,Molecular Biology ,Transcription factor ,Ecology, Evolution, Behavior and Systematics ,Cell Proliferation ,030304 developmental biology ,Blood Cells ,Organisms ,Biology and Life Sciences ,Cell Biology ,Invertebrates ,Mi-2/NuRD complex ,Hematopoiesis ,Gene Ontology ,Animal Genomics ,Animal Studies ,Zoology ,Entomology ,030217 neurology & neurosurgery ,Transcription Factors ,Developmental Biology - Abstract
The generation of lineage-specific gene expression programmes that alter proliferation capacity, metabolic profile and cell type-specific functions during differentiation from multipotent stem cells to specialised cell types is crucial for development. During differentiation gene expression programmes are dynamically modulated by a complex interplay between sequence-specific transcription factors, associated cofactors and epigenetic regulators. Here, we study U-shaped (Ush), a multi-zinc finger protein that maintains the multipotency of stem cell-like hemocyte progenitors during Drosophila hematopoiesis. Using genomewide approaches we reveal that Ush binds to promoters and enhancers and that it controls the expression of three gene classes that encode proteins relevant to stem cell-like functions and differentiation: cell cycle regulators, key metabolic enzymes and proteins conferring specific functions of differentiated hemocytes. We employ complementary biochemical approaches to characterise the molecular mechanisms of Ush-mediated gene regulation. We uncover distinct Ush isoforms one of which binds the Nucleosome Remodeling and Deacetylation (NuRD) complex using an evolutionary conserved peptide motif. Remarkably, the Ush/NuRD complex specifically contributes to the repression of lineage-specific genes but does not impact the expression of cell cycle regulators or metabolic genes. This reveals a mechanism that enables specific and concerted modulation of functionally related portions of a wider gene expression programme. Finally, we use genetic assays to demonstrate that Ush and NuRD regulate enhancer activity during hemocyte differentiation in vivo and that both cooperate to suppress the differentiation of lamellocytes, a highly specialised blood cell type. Our findings reveal that Ush coordinates proliferation, metabolism and cell type-specific activities by isoform-specific cooperation with an epigenetic regulator., Author summary In multicellular organisms common progenitors differentiate into various kinds of specialised cells. During differentiation metabolic profiles and proliferation potentials are progressively adjusted and cell type-specific traits are established by the coordinated activation and inactivation of genes. Here we study U-shaped (Ush), a conserved gene regulator that acts during macrophage differentiation in Drosophila melanogaster. We uncover that Ush coordinates the activation and inactivation of three differentiation-related gene groups, thereby modulating lipid metabolism, promoting cell division and maintaining a progenitor state. These functions are conferred by different Ush protein isoforms and their associated co-factors. One such co-factor, the nucleosome remodeling and deacetylation complex dNuRD, contributes to progenitor state maintenance but is not required for other Ush-regulated processes. This exemplifies how a single gene regulator can simultaneously influence different aspects of cellular differentiation by employing protein isoforms and isoform-specific co-regulator interactions.
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- 2020
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5. RNA inhibits dMi-2/CHD4 chromatin binding and nucleosome remodeling
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Ikram Ullah, Clemens Thölken, Yichen Zhong, Mara John, Oliver Rossbach, Jonathan Lenz, Markus Gößringer, Andrea Nist, Lea Albert, Thorsten Stiewe, Roland Hartmann, Olalla Vázquez, Ho-Ryung Chung, Joel P. Mackay, and Alexander Brehm
- Subjects
Adenosine Triphosphatases ,Animals ,Drosophila Proteins ,RNA ,Drosophila ,Autoantigens ,Chromatin ,General Biochemistry, Genetics and Molecular Biology ,Nucleosomes - Abstract
The ATP-dependent nucleosome remodeler Mi-2/CHD4 broadly modulates chromatin landscapes to repress transcription and to maintain genome integrity. Here we use individual nucleotide resolution crosslinking and immunoprecipitation (iCLIP) to show that Drosophila Mi-2 associates with thousands of mRNA molecules in vivo. Biochemical data reveal that recombinant dMi-2 preferentially binds to G-rich RNA molecules using two intrinsically disordered regions of unclear function. Pharmacological inhibition of transcription and RNase digestion approaches establish that RNA inhibits the association of dMi-2 with chromatin. We also show that RNA inhibits dMi-2-mediated nucleosome mobilization by competing with the nucleosome substrate. Importantly, this activity is shared by CHD4, the human homolog of dMi-2, strongly suggesting that RNA-mediated regulation of remodeler activity is an evolutionary conserved mechanism. Our data support a model in which RNA serves to protect actively transcribed regions of the genome from dMi-2/CHD4-mediated establishment of repressive chromatin structures.
- Published
- 2022
- Full Text
- View/download PDF
6. Photoswitchable peptides for spatiotemporal control of biological functions
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Lea Albert and Olalla Vázquez
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Models, Molecular ,Light ,Chemical biology ,Nanotechnology ,010402 general chemistry ,01 natural sciences ,Catalysis ,Isomerism ,Nucleic Acids ,Drug Discovery ,Materials Chemistry ,Animals ,Humans ,Amino Acid Sequence ,Protein Interaction Maps ,Biomedicine ,Cell Death ,010405 organic chemistry ,Chemistry ,business.industry ,Metals and Alloys ,General Chemistry ,Biological modulation ,Photochemical Processes ,0104 chemical sciences ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,Anti-Bacterial Agents ,Ceramics and Composites ,business ,Peptides - Abstract
Light is unsurpassed in its ability to modulate biological interactions. Since their discovery, chemists have been fascinated by photosensitive molecules capable of switching between isomeric forms, known as photoswitches. Photoswitchable peptides have been recognized for many years; however, their functional implementation in biological systems has only recently been achieved. Peptides are now acknowledged as excellent protein–protein interaction modulators and have been important in the emergence of photopharmacology. In this review, we briefly explain the different classes of photoswitches and summarize structural studies when they are incorporated into peptides. Importantly, we provide a detailed overview of the rapidly increasing number of examples, where biological modulation is driven by the structural changes. Furthermore, we discuss some of the remaining challenges faced in this field. These exciting proof-of-principle studies highlight the tremendous potential of photocontrollable peptides as optochemical tools for chemical biology and biomedicine.
- Published
- 2019
7. Controlled inhibition of methyltransferases using photoswitchable peptidomimetics: towards an epigenetic regulation of leukemia
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Yali Dou, Ruiwei Wan, Lea Albert, Jing Xu, Vasundara Srinivasan, and Olalla Vázquez
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0301 basic medicine ,Methyltransferase ,Peptidomimetic ,General Chemistry ,Biology ,DEPTOR ,Cell biology ,03 medical and health sciences ,030104 developmental biology ,Biochemistry ,Transcription (biology) ,Transferase ,WDR5 ,Epigenetics ,Gene - Abstract
We describe a cell-permeable photoswitchable probe capable of modulating epigenetic cellular states by disruption of an essential protein–protein interaction within the MLL1 methyltransferase core complex. Our azobenzene-containing peptides selectively block the WDR5-MLL1 interaction by binding to WDR5 with high affinity (Ki = 1.25 nM). We determined the co-crystal structure of this photoswitchable peptiomimetic with WDR5 to understand the interaction at the atomic level. Importantly, the photoswitchable trans and cis conformers of the probe display a clear difference in their inhibition of MLL1. We further demonstrate that the designed photo-controllable azo-peptidomimetics affect the transcription of the MLL1-target gene Deptor, which regulates hematopoiesis and leukemogenesis, and inhibit the growth of leukemia cells. This strategy demonstrates the potential of photopharmacological inhibition of methyltransferase protein–protein interactions as a novel method for external epigenetic control, providing a new toolbox for controlling epigenetic states.
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- 2017
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8. Modulating Protein-Protein Interactions with Visible-Light-Responsive Peptide Backbone Photoswitches
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Yali Dou, Jing Xu, Olalla Vázquez, Katarina Nikolic, Nemanja Djokovic, Dusan Ruzic, Lars-Oliver Essen, Alberto Peñalver, Laura Werel, Malte Hoffarth, and Lea Albert
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Light ,Peptidomimetic ,protein-protein interactions ,Molecular Dynamics Simulation ,010402 general chemistry ,01 natural sciences ,Biochemistry ,isomerization ,Protein–protein interaction ,Molecular dynamics ,chemistry.chemical_compound ,Transferase ,Molecular Biology ,photochemistry ,010405 organic chemistry ,Chemistry ,Organic Chemistry ,Photochemical Processes ,0104 chemical sciences ,Crosstalk (biology) ,Azobenzene ,Docking (molecular) ,peptidomimetics ,Biophysics ,Molecular Medicine ,Peptidomimetics ,Peptides ,Azo Compounds ,Isomerization ,azobenzenes - Abstract
Life relies on a myriad of carefully orchestrated processes, in which proteins and their direct interplay ultimately determine cellular function and disease. Modulation of this complex crosstalk has recently attracted attention, even as a novel therapeutic strategy. Herein, we describe the synthesis and characterization of two visible-light-responsive peptide backbone photoswitches based on azobenzene derivatives, to exert optical control over protein-protein interactions (PPI). The novel peptidomimetics undergo fast and reversible isomerization with low photochemical fatigue under alternatively blue-/green-light irradiation cycles. Both bind in the nanomolar range to the protein of interest. Importantly, the best peptidomimetic displays a clear difference between isomers in its protein-binding capacity and, in turn, in its potential to inhibit enzymatic activity through PPI disruption. In addition, crystal structure determination, docking and molecular dynamics calculations allow a molecular interpretation and open up new avenues in the design and synthesis of future photoswitchable PPI modulators.
- Published
- 2019
9. Light-controlled inhibition of MLL1 methyltransferase by azo-containing peptides: towards optoepigenetic leukemia regulation
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Olalla Vázquez, Lea Albert, Jing Xu, Yali Dou, and Vasundara Srinivasan
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Leukemia ,Methyltransferase ,Biochemistry ,Chemistry ,medicine ,medicine.disease - Published
- 2018
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10. Front Cover: Modulating Protein–Protein Interactions with Visible‐Light‐Responsive Peptide Backbone Photoswitches (ChemBioChem 11/2019)
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Lars-Oliver Essen, Malte Hoffarth, Olalla Vázquez, Katarina Nikolic, Yali Dou, Lea Albert, Dusan Ruzic, Jing Xu, Nemanja Djokovic, Alberto Peñalver, and Laura Werel
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010405 organic chemistry ,Peptidomimetic ,Chemistry ,Organic Chemistry ,010402 general chemistry ,01 natural sciences ,Biochemistry ,0104 chemical sciences ,Protein–protein interaction ,Front cover ,Peptide backbone ,Biophysics ,Molecular Medicine ,Molecular Biology ,Isomerization ,Visible spectrum - Published
- 2019
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11. Judge Mason's Notification
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Lea, Albert Miller, primary
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- 1948
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12. A Memoir
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Lea, Albert M, primary
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- 1935
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13. Notes on Wisconsin Territory, With a Map
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Lea, Albert M., primary
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- 1913
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14. Retinal Detachment.
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Skorin Jr.,, Leonid and Lea, Albert
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- 2013
15. Silicone Oil in the Anterior Chamber.
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Skorin, Jr., Leonid and Lea, Albert
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- 2013
16. Interventions to increase utilisation of advanced care planning documentation for hospitalised older adults.
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Walker LE, Liwonjo A, and Goyal DG
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- Humans, Aged, Female, Male, Aged, 80 and over, Patient Preference statistics & numerical data, Quality Improvement, Advance Directives statistics & numerical data, Advance Care Planning statistics & numerical data, Advance Care Planning standards, Documentation methods, Documentation statistics & numerical data, Documentation standards, Hospitalization statistics & numerical data
- Abstract
Objective: Understanding patients' wishes and preferences during hospitalisation is a crucial component of care. We identified a gap related to documentation of advance directives and patient preferences for care and focused on ensuring appropriate goals of care discussions were occurring and documented. Our aim was to improve the documentation of advance care planning notes to include 80% of targeted hospitalised patients., Patients and Methods: Hospitalised patients in two community hospitals were included. We performed serial Plan-Do-Measure-Act cycles. The first intervention introduced the 'surprise question' during an afternoon huddle. Intervention 2 emphasised documentation of the advance care planning note. The third intervention used a structured approach led by administrators at daily multidisciplinary huddles and identified patients with an Elderly Risk Assessment score of 16 or greater as targets for advance care planning documentation., Results: From a baseline performance under 10%, we increased to greater than 80% of patients with Elderly Risk Assessment scores of 16 or higher having documented advance care planning. We were able to sustain this performance over subsequent years., Conclusion: A structured approach that identifies a targeted population at higher risk of mortality, and implementation of a checklist at a daily multidisciplinary huddle provided sustained improvement in advance care planning documentation. This provides the opportunity for improved patient care that is aligned with their values and preferences., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2025. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ Group.)
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- 2025
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17. A five arm natural history study of nasal vestibulitis.
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Cathcart-Rake EJ, Zahrieh D, Smith D, Young S, McCue S, O'Connor A, Thomé S, Lacouture M, Register T, Piens J, Friday BB, and Loprinzi CL
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- Humans, Female, Docetaxel, Prospective Studies, Bevacizumab adverse effects, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Paclitaxel, Breast Neoplasms drug therapy
- Abstract
Introduction: Nasal symptoms are frequently reported by patients undergoing chemotherapy., Methods: Eligible patients planning to receive paclitaxel, docetaxel, nab-paclitaxel, bevacizumab without a concomitant taxane, or "other" (non-taxane, non-bevacizumab) chemotherapy regimens were invited to participate in this prospective study. Patients reported nasal symptoms prior to each dose of chemotherapy., Results: The percentage of patients (95% CI) who reported nasal symptoms was the same for patients who received bevacizumab or nab-paclitaxel, 82.6% (61.2%, 95.1%). There were no significant differences among the proportions of patients experiencing nasal symptoms within the paclitaxel, nab-paclitaxel, and bevacizumab cohorts. Patients in the nab-paclitaxel cohort were more likely to experience symptoms than those in the non-taxane non-bevacizumab cohort or docetaxel cohort (p = 0.001, p = 0.001). Patients in the bevacizumab cohort were more likely to experience nasal symptoms than those in the non-taxane non-bevacizumab cohort (p = 0.03)., Conclusion: Nasal vestibulitis symptoms are common in patients receiving chemotherapy, especially those receiving paclitaxel, docetaxel, and bevacizumab. Further investigations into treatments of this symptom complex are warranted., (© 2023 The Authors. Cancer Medicine published by John Wiley & Sons Ltd.)
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- 2023
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18. Surveillance mammography in older breast cancer survivors: Current practice patterns and patient perceptions.
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Karam D, Vierkant RA, Ehlers S, Freedman RA, Austin J, Khanani S, Larson NL, Loprinzi CL, Couch F, Olson JE, and Ruddy KJ
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- Aged, Female, Humans, Mammography, Mastectomy, Survivors, Breast Neoplasms epidemiology, Cancer Survivors
- Abstract
Introduction: Although the benefits of surveillance mammography for older breast cancer survivors have not been quantified prospectively, it is unlikely that mammography provides substantial benefit (and possible that mammography is harmful) to women with limited life expectancy and a low risk for in-breast cancer events., Materials and Methods: We identified 1268 women aged 77 and older with a history of Stage I-III breast cancer, who did not undergo bilateral mastectomy, were diagnosed with cancer at least three years prior to study entry, and who had consented to be surveyed as part of the Mayo Clinic Breast Disease Registry. We mailed them a one-time survey asking about their experiences with surveillance mammography. Women with metastatic disease were excluded. The primary endpoint was whether or not women reported at least one mammogram since breast cancer surgery., Results: Eight hundred forty-six of 1268 (67%) returned the survey, 734 of whom were eligible for analysis. The median age at the time of survey was 82, and the median time since cancer diagnosis was 12 years. Ninety-three percent reported having had at least one mammogram since their initial breast cancer surgery. Seventy-nine percent reported that they had surveillance mammography annually over the prior three years, including 76% of the 491 aged 80+ and 64% of the 189 aged 85 + ., Discussion: Most older breast cancer survivors who have residual breast tissue are undergoing annual mammograms. Additional educational materials may be beneficial for patients and clinicians to better individualize plans for surveillance mammography in older breast cancer survivors., Competing Interests: Declaration of Competing Interest The authors declare no potential conflicts of interest., (Copyright © 2022. Published by Elsevier Ltd.)
- Published
- 2022
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19. Natural history of nasal vestibulitis associated with paclitaxel, docetaxel, and other chemotherapy agents: a Minnesota Cancer Clinical Trials Network (MNCCTN) study.
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Cathcart-Rake EJ, Zahrieh D, Smith D, Young S, McCue S, O'Connor A, Thomé S, Lacouture M, Register T, Piens J, Friday BB, and Loprinzi CL
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- Antineoplastic Combined Chemotherapy Protocols adverse effects, Docetaxel adverse effects, Female, Humans, Minnesota, Paclitaxel adverse effects, Antineoplastic Agents therapeutic use, Breast Neoplasms drug therapy, Neoplasms drug therapy
- Abstract
Purpose: To describe the natural history of nasal vestibulitis in patients receiving taxane chemotherapy, including incidence, severity, and associated symptoms., Methods: Eligible patients with minimal or no baseline nasal symptoms were enrolled in this natural history study at initiation of a new chemotherapy regimen. Patients completed nasal symptom logs each time they received a chemotherapy dose. This manuscript reports upon the patients who received paclitaxel, docetaxel, or non-taxane non-bevacizumab chemotherapy. The proportions of patients within each cohort reporting any treatment-emergent nasal symptoms were estimated, with corresponding exact 95% confidence intervals. A cumulative incidence function was estimated within the chemotherapy cohorts to calculate the cumulative incidence rate of treatment-emergent nasal vestibulitis, treating death and disease progression as competing risks., Results: Of the 81 evaluable patients, nasal symptoms were reported by 76.5% (58.8%, 89.3%) receiving paclitaxel, 54.2% (32.8%, 74.5%) receiving docetaxel, and 47.8% (26.8%, 69.4%) receiving non-taxane and non-bevacizumab chemotherapy. Of the three pairwise chemotherapy group comparisons, both the tests comparing the cumulative incidence function between the paclitaxel and non-taxane non-bevacizumab chemotherapy cohorts and between the paclitaxel and docetaxel cohorts achieved statistical significance at the 5% level with a higher incidence of treatment-emergent nasal vestibulitis in the paclitaxel cohort in both comparisons (P = 0.026 and P = 0.035, respectively). These significant differences were retained in the cumulative incidence function regression analysis controlling for age, smoking history, allergies, and asthma. Most patients in the paclitaxel cohort reported nasal symptoms as moderate or severe (56%)., Conclusion: Patients receiving paclitaxel chemotherapy experience a high incidence of nasal symptoms., (© 2021. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
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- 2021
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20. Characteristics and treatment effectiveness of the nummular headache: a systematic review and analysis of 110 cases.
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Patel UK, Saleem S, Anwar A, Malik P, Chauhan B, Kapoor A, Arumaithurai K, and Kavi T
- Abstract
Background/objective: Nummular headache (NH) is a primary headache disorder characterised by intermittent or continuous scalp pain, affecting a small circumscribed area of the scalp. As there are limited data in the literature on NH, we conducted this review to evaluate demographic characteristics and factors associated with complete resolution of the headache, and effectiveness of treatment options., Methods: We performed a systematic review of cases reported through PubMed database, using Preferred Reporting Items for Systematic Reviews and Meta-Analyses protocol and 'nummular headache', 'coin-shaped headache' and 'coin-shaped cephalalgia' keywords. Analysis was performed by using χ
2 test and Wilcoxon rank-sum test. For individual interventions, the response rate (RR%) of the treatment was calculated., Results: We analysed a total of 110 NH cases, with median age 47 years and age of pain onset 42 years. Median duration to make correct diagnosis was 18 months after first attack. The median intensity of each attack was 5/10 on verbal rating scale over 4 cm diameter with duration of attack <30 min. Patients with NH had median three attacks per day with frequency of 9.5 days per month. 40 (57.97%) patients had complete resolution of the headache after treatment. Patients with complete resolution were younger, more likely to be female, and were more likely to have diagnosis within year. Patients with complete resolution more likely to have received treatment with onabotulinum toxin A (botulinum toxin type A (BoNT-A)), and gabapentin compared with patients without complete resolution. Most effective interventions were gabapentin (n=34; RR=67.7%), non-steroidal anti-inflammatory drugs (NSAIDs) (n=32; RR=65.6%), BoNT-A (n=12; RR=100%) and tricyclic antidepressant (n=9; RR=44.4%)., Conclusion: Younger patients, female sex and early diagnosis were associated with complete resolution. NSAIDs, gabapentin and BoNT-A were most commonly used medications, with significant RRs., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2020. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)- Published
- 2020
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21. Male breast cancer in the United States: Treatment patterns and prognostic factors in the 21st century.
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Yadav S, Karam D, Bin Riaz I, Xie H, Durani U, Duma N, Giridhar KV, Hieken TJ, Boughey JC, Mutter RW, Hawse JR, Jimenez RE, Couch FJ, Leon-Ferre RA, and Ruddy KJ
- Subjects
- Aged, Breast pathology, Breast Neoplasms, Male genetics, Breast Neoplasms, Male surgery, Breast Neoplasms, Male therapy, Estrogen Receptor alpha genetics, Gene Expression Regulation, Neoplastic genetics, Humans, Kaplan-Meier Estimate, Male, Mastectomy, Mastectomy, Segmental, Middle Aged, Neoplasm Staging, Receptor, ErbB-2 genetics, Triple Negative Breast Neoplasms genetics, Triple Negative Breast Neoplasms surgery, Triple Negative Breast Neoplasms therapy, United States epidemiology, Breast surgery, Breast Neoplasms, Male epidemiology, Prognosis, Triple Negative Breast Neoplasms epidemiology
- Abstract
Background: Male breast cancer (MBC) is a rare disease for which there is limited understanding of treatment patterns and prognostic factors., Methods: Men with TNM stage I to stage III breast cancer diagnosed between 2004 and 2014 in the National Cancer Data Base were included. Trends in treatment modalities were described using the average annual percentage change (AAPC) and estimated using Joinpoint software for the analysis of trends. Kaplan-Meier curves and the multivariate Cox proportional hazards regression model were used to compare survival between subgroups and to identify prognostic factors., Results: A total of 10,873 MBC cases were included, with a median age at diagnosis of 64 years. Breast-conserving surgery was performed in 24% of patients, and 70% of patients undergoing breast conservation received radiotherapy. Approximately 44% of patients received chemotherapy, and 62% of patients with estrogen receptor-positive disease received endocrine therapy. Oncotype DX was ordered in 35% of patients with lymph node-negative, estrogen receptor-positive/human epidermal growth factor receptor 2 (HER2)-negative tumors. During the study period, there was a significant increase in the rates of total mastectomy, contralateral prophylactic mastectomy, radiotherapy after breast conservation, ordering of Oncotype DX, and the use of endocrine therapy (P < .05). On multivariate analysis, factors found to be associated with worse overall survival were older age, black race, higher Charlson Comorbidity Index, high tumor grade and stage of disease, and undergoing total mastectomy. Residing in a higher income area; having progesterone receptor-positive tumors; and receipt of chemotherapy, radiotherapy, and endocrine therapy were associated with better overall survival., Conclusions: Despite the lack of prospective randomized trials in patients with MBC, the results of the current study demonstrated that the treatment of this disease has evolved over the years. These findings further the understanding of the modern treatment and prognosis of MBC, and identify several areas for further research., (© 2019 American Cancer Society.)
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- 2020
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22. Reply to On the proportion of male breast cancer among all breast cancers.
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Yadav S, Karam D, Bin Riaz I, Xie H, Durani U, Duma N, Giridhar KV, Hieken TJ, Boughey JC, Mutter RW, Hawse JR, Jimenez RE, Couch FJ, Leon Ferre RA, and Ruddy KJ
- Subjects
- Breast, Early Detection of Cancer, Humans, Male, Mammography, Prognosis, United States, Breast Neoplasms, Breast Neoplasms, Male
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- 2020
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23. Association between hyperlipidemia and mortality after incident acute myocardial infarction or acute decompensated heart failure: a propensity score matched cohort study and a meta-analysis.
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Yousufuddin M, Takahashi PY, Major B, Ahmmad E, Al-Zubi H, Peters J, Doyle T, Jensen K, Al Ward RY, Sharma U, Seshadri A, Wang Z, Simha V, and Murad MH
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- Cause of Death, Cholesterol, LDL blood, Humans, Hyperlipidemias diagnosis, Kaplan-Meier Estimate, Propensity Score, Proportional Hazards Models, Retrospective Studies, Heart Failure complications, Heart Failure mortality, Hyperlipidemias complications, Myocardial Infarction complications, Myocardial Infarction mortality
- Abstract
Objective: To examine the effect of HLP, defined as having a pre-existing or a new in-hospital diagnosis based on low density lipoprotein cholesterol (LDL-C) level ≥100 mg/dL during index hospitalisation or within the preceding 6 months, on all-cause mortality after hospitalisation for acute myocardial infarction (AMI) or acute decompensated heart failure (ADHF) and to determine whether HLP modifies mortality associations of other competing comorbidities. A systematic review and meta-analysis to place the current findings in the context of published literature., Design: Retrospective study, 1:1 propensity-score matching cohorts; a meta-analysis., Setting: Large academic centre, 1996-2015., Participants: Hospitalised patients with AMI or ADHF., Main Outcomes and Measures: All-cause mortality and meta-analysis of relative risks (RR)., Results: Unmatched cohorts: 13 680 patients with AMI (age (mean) 68.5 ± (SD) 13.7 years; 7894 (58%) with HLP) and 9717 patients with ADHF (age, 73.1±13.7 years; 3668 (38%) with HLP). In matched cohorts, the mortality was lower in AMI patients (n=4348 pairs) with HLP versus no HLP, 5.9 versus 8.6/100 person-years of follow-up, respectively (HR 0.76, 95% CI 0.72 to 0.80). A similar mortality reduction occurred in matched ADHF patients (n=2879 pairs) with or without HLP (12.4 vs 16.3 deaths/100 person-years; HR 0.80, 95% CI 0.75 to 0.86). HRs showed modest reductions when HLP occurred concurrently with other comorbidities. Meta-analyses of nine observational studies showed that HLP was associated with a lower mortality at ≥2 years after incident AMI or ADHF (AMI: RR 0.72, 95% CI 0.69 to 0.76; heart failure (HF): RR 0.67, 95% CI 0.55 to 0.81)., Conclusions: Among matched AMI and ADHF cohorts, concurrent HLP, compared with no HLP, was associated with a lower mortality and attenuation of mortality associations with other competing comorbidities. These findings were supported by a systematic review and meta-analysis., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2019. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)
- Published
- 2019
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24. The effects of parental opioid use on the parent-child relationship and children's developmental and behavioral outcomes: a systematic review of published reports.
- Author
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Romanowicz M, Vande Voort JL, Shekunov J, Oesterle TS, Thusius NJ, Rummans TA, Croarkin PE, Karpyak VM, Lynch BA, and Schak KM
- Abstract
Background: Between 2009 and 2014, nearly 3% of US children (age ≤ 17 years) lived in households with at least 1 parent with substance use disorder. The present systematic review aimed to evaluate effects of parental opioid use disorder on the parent-child relationship and child developmental and behavioral outcomes., Methods: Several databases were comprehensively searched for studies published from January 1980 through February 2018 that reviewed effects of parental opioid addiction on parent-child relationships and outcomes of children (age, 0-16 years)., Results: Of 304 unique studies, 12 evaluated effects of parental opioid addiction on the parent-child relationship as the primary outcome and on children's outcomes, including behaviors and development. Observation of mother-child interaction showed that mothers with opioid use disorders are more irritable, ambivalent, and disinterested while showing greater difficulty interpreting children's cues compared with the control group. Children of parents with opioid use disorders showed greater disorganized attachment; they were less likely to seek contact and more avoidant than children in the control group. The children also had increased risk of emotional and behavioral issues, poor academic performance, and poor social skills. Younger children had increased risk of abuse or neglect, or both, that later in life may lead to such difficulties as unemployment, legal issues, and substance abuse., Conclusions: Current evidence shows association between parental opioid addiction and poorer mother-child attachment and suboptimal child developmental and behavioral outcomes. Further research and treatment targeting children and families with parental opioid use are needed to prevent difficulties later in life.
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- 2019
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