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  1. Article ; Online: Anaemia in CKD-treatment standard.

    Macdougall, Iain C

    Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association

    2024  Volume 39, Issue 5, Page(s) 770–777

    Abstract: Anaemia is one of the most common complications of chronic kidney disease (CKD), having a significant impact on quality of life, and is also associated with a number of adverse clinical outcomes. Its pathogenesis is multifactorial, caused largely by an ... ...

    Abstract Anaemia is one of the most common complications of chronic kidney disease (CKD), having a significant impact on quality of life, and is also associated with a number of adverse clinical outcomes. Its pathogenesis is multifactorial, caused largely by an inadequate production of erythropoietin from the diseased kidneys, with iron deficiency, inflammation, shortened red cell lifespan and enhanced blood loss also being contributory factors. The management of this condition was transformed in the late 1980s by the advent of recombinant human erythropoietin (epoetin), and treatment paradigms have developed over the last three decades, largely focusing on a combination of epoetin or its analogues (erythropoiesis-stimulating agents; ESAs) along with iron supplementation, often administered intravenously due to increased hepcidin levels limiting iron absorption from the gut. Indeed, in patients with early CKD and iron deficiency, iron per se may be sufficient to improve the anaemia, delaying the need for ESA therapy. Other causes of anaemia should be excluded and corrected (if possible) before resorting to treatment with ESAs and iron. More recently, the hypoxia-inducible factor-prolyl hydroxylase inhibitors have entered the therapeutic arena; these are orally active agents that upregulate endogenous erythropoietin production as well as a number of iron-regulatory genes which may also enhance erythropoiesis. The latter drugs are highly efficacious, and may have advantages in inflammatory conditions causing resistance to conventional ESA therapy, but concerns exist regarding their safety, particularly in the longer term. This article reviews the current standards of treatment, as well as recent novel developments in the management of anaemia in CKD.
    MeSH term(s) Humans ; Anemia/etiology ; Anemia/drug therapy ; Renal Insufficiency, Chronic/complications ; Hematinics/therapeutic use ; Erythropoietin/therapeutic use
    Chemical Substances Hematinics ; Erythropoietin (11096-26-7)
    Language English
    Publishing date 2024-04-23
    Publishing country England
    Document type Journal Article ; Review ; Research Support, Non-U.S. Gov't
    ZDB-ID 90594-x
    ISSN 1460-2385 ; 0931-0509
    ISSN (online) 1460-2385
    ISSN 0931-0509
    DOI 10.1093/ndt/gfad250
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Flat Panel Detector c-Arms Are Associated with Dramatically Reduced Radiation Exposure During Ureteroscopy and Produce Superior Images.

    Lee, Jason J / Venna, Alyssia M / McCarthy, Ian / Cilento, Bartley G / Demers, Michael G / MacDougall, Robert D / Beaulieu, Danielle / Nosrati, Reyhaneh / Nelson, Caleb P / Kurtz, Michael P

    Journal of endourology

    2021  Volume 35, Issue 6, Page(s) 789–794

    Abstract: Background: ...

    Abstract Background:
    MeSH term(s) Child ; Fluoroscopy ; Humans ; Phantoms, Imaging ; Radiation Dosage ; Radiation Exposure ; Radiographic Image Enhancement ; Retrospective Studies ; Ureteroscopy
    Language English
    Publishing date 2021-03-24
    Publishing country United States
    Document type Journal Article
    ZDB-ID 356931-7
    ISSN 1557-900X ; 0892-7790
    ISSN (online) 1557-900X
    ISSN 0892-7790
    DOI 10.1089/end.2020.0974
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Book: Pocket reference to renal anemia

    Macdougall, Iain C.

    2013  

    Author's details Iain C. MacDougall
    Language English
    Size IX, 62 S. : Ill., graph. Darst.
    Edition 2. ed.
    Publisher Springer Healthcare
    Publishing place London
    Publishing country Great Britain
    Document type Book
    HBZ-ID HT018106462
    ISBN 978-1-908517-74-6 ; 1-908517-74-3
    Database Catalogue ZB MED Medicine, Health

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  4. Article ; Online: Hypoxia-inducible factor prolyl hydroxylase enzyme inhibitors: ready for primetime?

    Macdougall, Iain C

    Current opinion in nephrology and hypertension

    2022  Volume 31, Issue 5, Page(s) 399–405

    Abstract: Purpose of review: Hypoxia-inducible factor (HIF) prolyl hydroxylase inhibitors have recently been developed as a new treatment for anemia associated with chronic kidney disease (CKD). Several of these have been approved in Europe (roxadustat), China, ... ...

    Abstract Purpose of review: Hypoxia-inducible factor (HIF) prolyl hydroxylase inhibitors have recently been developed as a new treatment for anemia associated with chronic kidney disease (CKD). Several of these have been approved in Europe (roxadustat), China, and Japan, but none approved in the United States to date, although daprodustat has been submitted as a new drug application to the Food and Drug Administration. The aim of this review is to critically appraise the available data, particularly the most recent publications, and offer a personal viewpoint on whether or not these drugs are ready for primetime.
    Recent findings: The efficacy of HIF prolyl hydroxylase inhibitors in improving CKD anemia and maintaining a higher hemoglobin is undisputed, but there remain some concerns about safety, particularly in the long term. Some of the safety concerns may result from an exaggerated pharmacological response, while other potential adverse effects could be due to transcriptional effects of these agents beyond genes involved in erythropoiesis.
    Summary: HIF prolyl hydroxylase inhibitors are already being used in clinical practice in several countries of the world, and ongoing research is being conducted to define the role of these drugs not only in the management of anemia but also beyond into other clinical settings.
    MeSH term(s) Anemia/drug therapy ; Anemia/etiology ; Humans ; Hypoxia ; Hypoxia-Inducible Factor-Proline Dioxygenases ; Prolyl-Hydroxylase Inhibitors/adverse effects ; Renal Insufficiency, Chronic/complications
    Chemical Substances Prolyl-Hydroxylase Inhibitors ; Hypoxia-Inducible Factor-Proline Dioxygenases (EC 1.14.11.29)
    Language English
    Publishing date 2022-07-15
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 1151092-4
    ISSN 1473-6543 ; 1535-3842 ; 1062-4813 ; 1062-4821
    ISSN (online) 1473-6543 ; 1535-3842
    ISSN 1062-4813 ; 1062-4821
    DOI 10.1097/MNH.0000000000000813
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Book ; Online: The Change Handbook c.68

    MacDougall, Sarah / Baldwin, Christina

    2009  

    Abstract: This material has been excerpted from The Change Handbook, Second Edition edited by Peggy Holman, Tom Devane, and Steven ... ...

    Abstract This material has been excerpted from The Change Handbook, Second Edition edited by Peggy Holman, Tom Devane, and Steven Cady
    Language English
    Size Online-Ressource (9 p.)
    Publisher Berrett-Koehler Publishers, Inc
    Publishing place San Francisco
    Document type Book ; Online
    Note Description based upon print version of record
    ISBN 9781605090450 ; 160509045X
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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  6. Article ; Online: Alkylstrontium diamidoboranes: β-hydride elimination and Sr-C insertion.

    Bellham, Peter / Hill, Michael S / Liptrot, David J / MacDougall, Dugald J / Mahon, Mary F

    Chemical communications (Cambridge, England)

    2011  Volume 47, Issue 32, Page(s) 9060–9062

    Abstract: Alkylstrontium secondary amidoboranes are shown to undergo β-hydride elimination and Sr-C insertion ...

    Abstract Alkylstrontium secondary amidoboranes are shown to undergo β-hydride elimination and Sr-C insertion reactions; observations which provide support for similar processes in d(0)-catalysed dialkylamine borane dehydrocoupling.
    Language English
    Publishing date 2011-08-28
    Publishing country England
    Document type Journal Article
    ZDB-ID 1472881-3
    ISSN 1364-548X ; 1359-7345 ; 0009-241X
    ISSN (online) 1364-548X
    ISSN 1359-7345 ; 0009-241X
    DOI 10.1039/c1cc12825f
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Comparison of adequate relief with symptom, global, and responder endpoints in linaclotide phase 3 trials in IBS-C.

    Camilleri, Michael / Lembo, Anthony J / Lavins, Bernard J / MacDougall, James E / Carson, Robyn T / Williams, Valerie Sl / Nelson, Lauren M / Shiff, Steven J / Currie, Mark G / Kurtz, Caroline B / Johnston, Jeffrey M

    United European gastroenterology journal

    2015  Volume 3, Issue 1, Page(s) 53–62

    Abstract: Background: Optimal clinical trial endpoints for irritable bowel syndrome with constipation (IBS-C ... to assess clinically meaningful change (CMC) in IBS-C symptoms.: Methods: Using pooled 12-week data ... for IBS-C responder endpoints recommended by the FDA and EMA. There was considerable agreement of weekly ...

    Abstract Background: Optimal clinical trial endpoints for irritable bowel syndrome with constipation (IBS-C) are uncertain.
    Objective: The objective of this article is to compare adequate relief (AR) to abdominal/bowel symptoms, global endpoints, and FDA and EMA responder criteria; and to use AR as an anchor to assess clinically meaningful change (CMC) in IBS-C symptoms.
    Methods: Using pooled 12-week data from two phase 3 linaclotide clinical trials, daily abdominal/bowel symptoms and weekly global assessments were correlated with AR. Symptom CMC thresholds were estimated using AR as an anchor. Agreement between AR and FDA/EMA responder criteria was assessed.
    Results: Correlations of AR with percentage change in abdominal symptoms, bowel symptoms, and global endpoints ranged from 0.48-0.54, 0.32-0.39, and 0.61-0.71, respectively. Using AR as an anchor, CMC thresholds were 29% improvement in abdominal pain, 29% improvement in abdominal discomfort, and 0.7/week increase in CSBMs, similar to thresholds for IBS-C responder endpoints recommended by the FDA and EMA. There was considerable agreement of weekly responder rates between AR and the FDA and EMA endpoints (on average, 70%-76% and 71%-82% of weeks with agreement, respectively).
    Conclusions: AR bridges IBS-C clinical trials, putting into perspective the disparate primary endpoints recommended by professional societies and regulatory authorities, and allowing researchers, practitioners, and regulators to compare trial results.
    Language English
    Publishing date 2015-02
    Publishing country England
    Document type Journal Article
    ISSN 2050-6406
    ISSN 2050-6406
    DOI 10.1177/2050640614555946
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Darbepoetin Alfa: A Viewpoint by Iain C. Macdougall.

    Macdougall, Iain C.

    Drugs

    2001  Volume 61, Issue 14, Page(s) 2105–2106

    Language English
    Publishing date 2001-11-27
    Publishing country New Zealand
    Document type Journal Article
    ZDB-ID 120316-2
    ISSN 1179-1950 ; 0012-6667
    ISSN (online) 1179-1950
    ISSN 0012-6667
    DOI 10.2165/00003495-200161140-00010
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Responders vs clinical response: a critical analysis of data from linaclotide phase 3 clinical trials in IBS-C.

    Lacy, B E / Lembo, A J / Macdougall, J E / Shiff, S J / Kurtz, C B / Currie, M G / Johnston, J M

    Neurogastroenterology and motility : the official journal of the European Gastrointestinal Motility Society

    2013  Volume 26, Issue 3, Page(s) 326–333

    Abstract: ... responders in irritable bowel syndrome-C (IBS-C; i.e., FDA's Responder Endpoint) for regulatory approval ... We analyzed pooled IBS-C linaclotide trial data to evaluate clinically significant responses in linaclotide ... determined using pooled data from two linaclotide Phase 3 IBS-C trials.: Key results: 1602 IBS-C patients ...

    Abstract Background: US Food and Drug Administration (FDA) set a rigorous standard for defining patient responders in irritable bowel syndrome-C (IBS-C; i.e., FDA's Responder Endpoint) for regulatory approval. However, this endpoint's utility for health-care practitioners to assess clinical response has not been determined. We analyzed pooled IBS-C linaclotide trial data to evaluate clinically significant responses in linaclotide-treated patients who did not meet the FDA responder definition.
    Methods: Percentages of FDA non-responders reporting improvement in abdominal pain, bowel function and/or global relief measures were determined using pooled data from two linaclotide Phase 3 IBS-C trials.
    Key results: 1602 IBS-C patients enrolled; 34% of linaclotide-treated and 17% of placebo-treated patients met the FDA Responder Endpoint (p < 0.0001). Among FDA non-responders at week 12, 63% of linaclotide-treated patients reported their abdominal pain was at least somewhat relieved, compared with 48% of placebo-treated patients. For stool frequency, 62% of linaclotide-treated patients reported that they were at least somewhat improved at week 12, compared with 46% of placebo-treated patients. For global IBS symptoms, 65% of linaclotide-treated patients reported at least some IBS-symptom relief, 43% reported adequate relief of IBS symptoms, and 57% reported being satisfied with linaclotide treatment, vs placebo rates of 48%, 34%, and 41% respectively.
    Conclusions & inferences: Most linaclotide-treated IBS-C patients who were FDA non-responders reported some improvement in abdominal pain and stool frequency, and global relief/satisfaction. In addition to the FDA Responder Endpoint, differing response thresholds and symptom-specific change from baseline should be considered by clinicians for a complete understanding of clinical response to linaclotide and other IBS-C therapies.
    MeSH term(s) Abdominal Pain/drug therapy ; Adult ; Aged ; Aged, 80 and over ; Clinical Trials, Phase III as Topic ; Female ; Humans ; Irritable Bowel Syndrome/drug therapy ; Male ; Middle Aged ; Peptides/therapeutic use ; Treatment Outcome ; Young Adult
    Chemical Substances Peptides ; linaclotide (N0TXR0XR5X)
    Language English
    Publishing date 2013-12-30
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1186328-6
    ISSN 1365-2982 ; 1350-1925
    ISSN (online) 1365-2982
    ISSN 1350-1925
    DOI 10.1111/nmo.12264
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Beryllium-induced C-N bond activation and ring opening of an N-heterocyclic carbene.

    Arrowsmith, Merle / Hill, Michael S / Kociok-Köhn, Gabriele / MacDougall, Dugald J / Mahon, Mary F

    Angewandte Chemie (International ed. in English)

    2012  Volume 51, Issue 9, Page(s) 2098–2100

    Language English
    Publishing date 2012-02-27
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2011836-3
    ISSN 1521-3773 ; 1433-7851
    ISSN (online) 1521-3773
    ISSN 1433-7851
    DOI 10.1002/anie.201107836
    Database MEDical Literature Analysis and Retrieval System OnLINE

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