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  1. Article ; Online: The bone marrow microenvironment - Home of the leukemic blasts.

    Shafat, Manar S / Gnaneswaran, Bruno / Bowles, Kristian M / Rushworth, Stuart A

    Blood reviews

    2017  Volume 31, Issue 5, Page(s) 277–286

    Abstract: Acute Myeloid Leukaemia (AML) is a genetically, biologically and clinically heterogeneous set of diseases, which are characterised by an increased growth of abnormal myeloid progenitor cells within the bone marrow (BM). Ex-vivo AML exhibits a high level ... ...

    Abstract Acute Myeloid Leukaemia (AML) is a genetically, biologically and clinically heterogeneous set of diseases, which are characterised by an increased growth of abnormal myeloid progenitor cells within the bone marrow (BM). Ex-vivo AML exhibits a high level of spontaneous apoptosis. Furthermore, relapse for patients achieving remission occurs from minimal residual disease harboured within the BM microenvironment. Taken together, these observations illustrate the importance of the BM microenvironment in sustaining AML. While significant progress has been made elaborating the small-scale genetic mutations and larger-scale chromosomal translocations that contribute to the development of AML and its prognosis in response to treatment, less is understood about the complex microenvironment of the BM, which is known to be a key player in the pathogenesis of the disease. As we look towards future therapies, the consideration that the BM microenvironment is uniquely important as a niche for AML - coupled with the idea that leukaemic blasts are more likely to be genetically unstable and therefore evolve resistance to conventional chemotherapies - make the functions of the non-malignant cells of the BM attractive targets for therapy. In this review, we discuss the microanatomy of the BM and provide an overview of the evidence supporting the role of the BM microenvironment in creating conditions conducive to the survival and proliferation of AML blasts. Ultimately, we examine the therapeutic potential of uncoupling AML from the BM microenvironment.
    MeSH term(s) Adipocytes/metabolism ; Animals ; Bone Marrow/drug effects ; Bone Marrow/metabolism ; Bone Marrow/pathology ; Bone Marrow Cells/metabolism ; Bone Marrow Cells/pathology ; Endothelial Cells/metabolism ; Fibroblasts/metabolism ; Hematopoiesis ; Humans ; Leukemia, Myeloid, Acute/drug therapy ; Leukemia, Myeloid, Acute/etiology ; Leukemia, Myeloid, Acute/metabolism ; Leukemia, Myeloid, Acute/pathology ; Mesenchymal Stromal Cells/metabolism ; Molecular Targeted Therapy ; Osteoblasts/metabolism ; Osteoclasts/metabolism ; Tumor Microenvironment/drug effects
    Language English
    Publishing date 2017-03-12
    Publishing country England
    Document type Journal Article ; Review ; Research Support, Non-U.S. Gov't
    ZDB-ID 639015-8
    ISSN 1532-1681 ; 0268-960X
    ISSN (online) 1532-1681
    ISSN 0268-960X
    DOI 10.1016/j.blre.2017.03.004
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Neurocognitive outcomes in Malawian children exposed to malaria during pregnancy: An observational birth cohort study.

    Weckman, Andrea M / Conroy, Andrea L / Madanitsa, Mwayiwawo / Gnaneswaran, Bruno / McDonald, Chloe R / Kalilani-Phiri, Linda / Chandna, Jaya / Ali, Doreen / Mwapasa, Victor / Khairallah, Carole / Thwai, Kyaw Lay / Meshnick, Steven R / Taylor, Steve M / Ter Kuile, Feiko O / Kain, Kevin C / Gladstone, Melissa

    PLoS medicine

    2021  Volume 18, Issue 9, Page(s) e1003701

    Abstract: Background: Annually 125 million pregnancies are at risk of malaria infection. However, the impact of exposure to malaria in pregnancy on neurodevelopment in children is not well understood. We hypothesized that malaria in pregnancy and associated ... ...

    Abstract Background: Annually 125 million pregnancies are at risk of malaria infection. However, the impact of exposure to malaria in pregnancy on neurodevelopment in children is not well understood. We hypothesized that malaria in pregnancy and associated maternal immune activation result in neurodevelopmental delay in exposed offspring.
    Methods and findings: Between April 2014 and April 2015, we followed 421 Malawian mother-baby dyads (median [IQR] maternal age: 21 [19, 28] years) who were previously enrolled (median [IQR] gestational age at enrollment: 19.7 [17.9, 22.1] weeks) in a randomized controlled malaria prevention trial with 5 or 6 scheduled assessments of antenatal malaria infection by PCR. Children were evaluated at 12, 18, and/or 24 months of age with cognitive tests previously validated in Malawi: the Malawi Developmental Assessment Tool (MDAT) and the MacArthur-Bates Communicative Development Inventories (MCAB-CDI). We assessed the impact of antenatal malaria (n [%] positive: 240 [57.3]), placental malaria (n [%] positive: 112 [29.6]), and maternal immune activation on neurocognitive development in children. Linear mixed-effects analysis showed that children exposed to antenatal malaria between 33 and 37 weeks gestation had delayed language development across the 2-year follow-up, as measured by MCAB-CDI (adjusted beta estimate [95% CI], -7.53 [-13.04, -2.02], p = 0.008). Maternal immune activation, characterized by increased maternal sTNFRII concentration, between 33 and 37 weeks was associated with lower MCAB-CDI language score (adjusted beta estimate [95% CI], -8.57 [-13.09, -4.06], p < 0.001). Main limitations of this study include a relatively short length of follow-up and a potential for residual confounding that is characteristic of observational studies.
    Conclusions: This mother-baby cohort presents evidence of a relationship between malaria in pregnancy and neurodevelopmental delay in offspring. Malaria in pregnancy may be a modifiable risk factor for neurodevelopmental injury independent of birth weight or prematurity. Successful interventions to prevent malaria during pregnancy may reduce the risk of neurocognitive delay in children.
    MeSH term(s) Cohort Studies ; Female ; Humans ; Infant ; Infectious Disease Transmission, Vertical ; Language Development Disorders/etiology ; Malaria/embryology ; Malaria/immunology ; Malaria/physiopathology ; Malawi ; Male ; Neurocognitive Disorders/etiology ; Neurocognitive Disorders/prevention & control ; Neuropsychological Tests ; Pregnancy ; Pregnancy Complications, Infectious/immunology
    Language English
    Publishing date 2021-09-28
    Publishing country United States
    Document type Journal Article ; Observational Study ; Research Support, Non-U.S. Gov't
    ZDB-ID 2185925-5
    ISSN 1549-1676 ; 1549-1277
    ISSN (online) 1549-1676
    ISSN 1549-1277
    DOI 10.1371/journal.pmed.1003701
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: From Paris to Montreal: disease regression is common during long term follow-up of paediatric Crohn's disease.

    Davies, Mike / Dodd, Susanna / Coultate, Morwenna / Ross, Andrew / Pears, George / Gnaneswaran, Bruno / Tzivinikos, Christos / Konidari, Anastasia / Cheng, Jeng / Auth, Marcus Kh / Cameron, Fiona / Tamhne, Sarang / Renji, Elizabeth / Nair, Manjula / Baillie, Colin / Collins, Paul / Smith, Philip J / Subramanian, Sreedhar

    Scandinavian journal of gastroenterology

    2020  Volume 55, Issue 2, Page(s) 148–153

    Abstract: Introduction: ...

    Abstract Introduction:
    MeSH term(s) Adolescent ; Adult ; Biological Products/therapeutic use ; Child ; Colectomy ; Crohn Disease/classification ; Crohn Disease/diagnosis ; Crohn Disease/therapy ; Disease Progression ; Female ; Follow-Up Studies ; Humans ; Male ; Retrospective Studies ; Risk Factors ; Severity of Illness Index ; Young Adult
    Chemical Substances Biological Products
    Language English
    Publishing date 2020-01-12
    Publishing country England
    Document type Journal Article ; Observational Study
    ZDB-ID 82042-8
    ISSN 1502-7708 ; 0036-5521
    ISSN (online) 1502-7708
    ISSN 0036-5521
    DOI 10.1080/00365521.2019.1710765
    Database MEDical Literature Analysis and Retrieval System OnLINE

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