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  • 1
    Online Resource
    Online Resource
    Wiley ; 2008
    In:  Rapid Communications in Mass Spectrometry Vol. 22, No. 15 ( 2008-08-15), p. 2349-2354
    In: Rapid Communications in Mass Spectrometry, Wiley, Vol. 22, No. 15 ( 2008-08-15), p. 2349-2354
    Abstract: Micropipette tip (tip) pipetting accuracy and precision are functions of tip manufacture consistency, morphological variation, and retained inner tip wall particulate matter. Irregular tip inner wall surfaces and retained particulate matter cause pipetting inaccuracy. Washed and unwashed tips from seven manufacturers were compared using weight by difference (six), microscopic Luxol Fast Blue staining (seven), and matrix‐assisted laser desorption/onization time‐of‐flight (MALDI‐TOF) mass spectrometry (six). Photomicrographs revealed tip irregularity and inner wall retained particulate matter. Computer model analysis was used to identify tip irregularity and retained matter. These tests established the utility of a pipette solvent wash to increase the performance and the accuracy of tips and, thus, improve the MALDI mass spectra obtained. Copyright © 2008 John Wiley & Sons, Ltd.
    Type of Medium: Online Resource
    ISSN: 0951-4198 , 1097-0231
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2008
    detail.hit.zdb_id: 2002158-6
    detail.hit.zdb_id: 58731-X
    SSG: 11
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  • 2
    Online Resource
    Online Resource
    American Association for Cancer Research (AACR) ; 2020
    In:  Cancer Research Vol. 80, No. 4_Supplement ( 2020-02-15), p. P3-08-71-P3-08-71
    In: Cancer Research, American Association for Cancer Research (AACR), Vol. 80, No. 4_Supplement ( 2020-02-15), p. P3-08-71-P3-08-71
    Abstract: Background: Mammographic breast density (MBD) is a strong modifiable risk factor for breast cancer, especially in premenopausal women. It is estimated that up to 39% of breast cancer cases in premenopausal women could potentially be prevented by reducing dense breasts to non-dense breasts. Therefore, reducing breast density through targeted interventions is an excellent opportunity to substantially reduce breast cancer incidence in premenopausal women. We performed a critical evaluation of the literature to determine the associations of chemoprevention agents use with MBD. This will guide the management of premenopausal women at risk for breast cancer. Methods: Eleven databases were searched on July 2019. We included interventional, cross-sectional, longitudinal or observational studies in Englishreporting the associations of medication with mammographic breast density in premenopausal womenwith no history of breast cancer. Two researchers extracted the data and assessed the quality of the studies. Supplements not otherwise specified were excluded. Results: After de-duplication process, 1,464 citations were screened for eligibility. Seven studies met our inclusion criteria: two observational, four randomized controlled, and one non-randomized controlled trials (RCT). There were two categories of medications: dietary supplements (i.e. vitamin D, calcium, isoflavone) and drugs (non-steroidal anti-inflammatory drugs [NSAIDs], selective estrogen receptor modulators (SERMs) goserelin, and GnRHA deslorelin acetate). In observational studies, calcium use was associated with a significant reduction in MBD, while vitamin D and NSAIDs showed no reduction6. Likewise, Isoflavone and vitamin D in doses of 1000, 2000 or 3,000IU/day were not associated with a reduction in MBD in two different RCT. Groselin, GnRHA, deslorein acetate, statins were not associated with MBD reduction in an RCT’s. SERMs (tamoxifene and raloxifene) were the only drugs associated with reductions in MBD in RCTs. Conclusions: Only a very limited number of medications (SERMs) are associated with reductions in MBD. In view of their low uptake and adherence, identifying other medications that can reduce MBD is crucial, as these could have utility in breast cancer prevention. Citation Format: Ana S. Salazar, Malika Rakhmankulova, Laura E. Simmon, Adetunji Toriola. Medication use to reduce mammographic breast density in premenopausal women: A systematic review [abstract]. In: Proceedings of the 2019 San Antonio Breast Cancer Symposium; 2019 Dec 10-14; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2020;80(4 Suppl):Abstract nr P3-08-71.
    Type of Medium: Online Resource
    ISSN: 0008-5472 , 1538-7445
    RVK:
    RVK:
    Language: English
    Publisher: American Association for Cancer Research (AACR)
    Publication Date: 2020
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    detail.hit.zdb_id: 1432-1
    detail.hit.zdb_id: 410466-3
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  • 3
    In: BMJ Open, BMJ, Vol. 7, No. 12 ( 2017-12), p. e017565-
    Abstract: A potential psychological harm of screening is unexpected diagnosis — labelling. We need to know the frequency and severity of this harm to make informed decisions about screening. We asked whether current evidence allows an estimate of any psychological harm of labelling. As case studies, we used two conditions for which screening is common: prostate cancer (PCa) and abdominal aortic aneurysm (AAA). Design Systematic review with narrative synthesis. Data sources and eligibility criteria We searched the English language literature in PubMed, PsychINFO and Cumulative Index of Nursing and Allied Health Literature (CINAHL) for research of any design published between 1 January 2002 and 23 January 2017 that provided valid data about the psychological state of people recently diagnosed with early stage PCa or AAA. Two authors independently used explicit criteria to review and critically appraise all studies for bias, applicability and the extent to which it provided evidence about the frequency and severity of harm from labelling. Results 35 quantitative studies (30 of PCa and 5 of AAA) met our criteria, 17 (48.6%) of which showed possible or definite psychological harm from labelling. None of these studies, however, had either appropriate measures or relevant comparisons to estimate the frequency and severity of psychological harm. Four PCa and three AAA qualitative studies all showed clear evidence of at least moderate psychological harm from labelling. Seven population-based studies found increased suicide in patients recently diagnosed with PCa. Conclusions Although qualitative and population-based studies show that at least moderate psychological harm due to screening for PCa and AAA does occur, the current quantitative evidence is insufficient to allow a more precise estimation of frequency and severity. More sensitive measures and improved research designs are needed to fully characterise this harm. In the meantime, clinicians and recommendation panels should be aware of the occurrence of this harm.
    Type of Medium: Online Resource
    ISSN: 2044-6055 , 2044-6055
    Language: English
    Publisher: BMJ
    Publication Date: 2017
    detail.hit.zdb_id: 2599832-8
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  • 4
    Online Resource
    Online Resource
    Oxford University Press (OUP) ; 2021
    In:  JNCI Cancer Spectrum Vol. 5, No. 1 ( 2021-01-05)
    In: JNCI Cancer Spectrum, Oxford University Press (OUP), Vol. 5, No. 1 ( 2021-01-05)
    Abstract: Higher mammographic breast density (MBD) is associated with an increased risk of breast cancer when compared with lower MBD, especially in premenopausal women. However, little is known about the effectiveness of chemoprevention agents in reducing MBD in premenopausal women without a history of breast cancer. Findings from this review should provide insight on how to target MBD in breast cancer prevention in premenopausal women with dense breasts. Methods We searched 9 electronic databases for clinical trials in English, Spanish, French, or German published until January 2020. Articles evaluating the association of pharmacological agents and MBD were included. Data were extracted on methods, type and dose of intervention, outcomes, side effects, and follow up. Quality of the studies was assessed using the US Preventive Services Task Force criteria. Results We identified 7 clinical trials evaluating the associations of 6 chemoprevention agents with changes in MBD in premenopausal women without history of breast cancer. The studies evaluated selective estrogen-receptor modulators (n = 1); gonadotropin-releasing hormone agonists (n = 2); isoflavones (n = 1); vitamin D (n = 1); and Boswellia, betaine, and mayo-inositol compound (n = 1). Hormonal interventions were associated with net reductions in percent density (tamoxifen [13.4%], leuprolide acetate [8.9%] , and goserelin [2.7%]), whereas nonhormonal (vitamin D and isoflavone) interventions were not. However, MBD returned to preintervention baseline levels after cessation of gonadotropin-releasing hormone agonists. Conclusions A limited number of chemoprevention agents have been shown to reduce MBD in premenopausal women. Identification of new and well-tolerated chemoprevention agents targeting MBD and larger studies to confirm agents that have been studied in small trials are urgent priorities for primary breast cancer prevention in premenopausal women with dense breasts.
    Type of Medium: Online Resource
    ISSN: 2515-5091
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2021
    detail.hit.zdb_id: 2975772-1
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  • 5
    Online Resource
    Online Resource
    Springer Science and Business Media LLC ; 2021
    In:  Breast Cancer Research and Treatment Vol. 189, No. 2 ( 2021-09), p. 585-592
    In: Breast Cancer Research and Treatment, Springer Science and Business Media LLC, Vol. 189, No. 2 ( 2021-09), p. 585-592
    Type of Medium: Online Resource
    ISSN: 0167-6806 , 1573-7217
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2021
    detail.hit.zdb_id: 2004077-5
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  • 6
    In: BioMetals, Springer Science and Business Media LLC, Vol. 28, No. 4 ( 2015-8), p. 783-789
    Type of Medium: Online Resource
    ISSN: 0966-0844 , 1572-8773
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2015
    detail.hit.zdb_id: 1496519-7
    SSG: 12
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