Dense breast tissue in postmenopausal women is associated with a pro-inflammatory microenvironment in vivo

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Abrahamsson, AnnelieLinköpings universitet,Avdelningen för kliniska vetenskaper,Medicinska fakulteten,Region Östergötland, Onkologiska kliniken US (author)

Dense breast tissue in postmenopausal women is associated with a pro-inflammatory microenvironment in vivo

Article/chapterEnglish2016

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TAYLOR & FRANCIS INC,2016
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LIBRIS-ID:oai:DiVA.org:liu-133020
https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-133020URI
https://doi.org/10.1080/2162402X.2016.1229723DOI

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Language:English
Summary in:English

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Subject category:ref swepub-contenttype
Subject category:art swepub-publicationtype

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Funding Agencies|Swedish Cancer Society [2015/309]; Swedish Research Council [2013-2457]; LiU-Cancer; Research Funds of Linkoping University Hospital
Inflammation is one of the hallmarks of carcinogenesis. High mammographic density has been associated with increased risk of breast cancer but the mechanisms behind are poorly understood. We evaluated whether breasts with different mammographic densities exhibited differences in the inflammatory microenvironment.Postmenopausal women attending the mammography-screening program were assessed having extreme dense, n = 20, or entirely fatty breasts (nondense), n = 19, on their regular mammograms. Thereafter, the women were invited for magnetic resonance imaging (MRI), microdialysis for the collection of extracellular molecules in situ and a core tissue biopsy for research purposes. On the MRI, lean tissue fraction (LTF) was calculated for a continuous measurement of breast density. LTF confirmed the selection from the mammograms and gave a continuous measurement of breast density. Microdialysis revealed significantly increased extracellular in vivo levels of IL-6, IL-8, vascular endothelial growth factor, and CCL5 in dense breast tissue as compared with nondense breasts. Moreover, the ratio IL-1Ra/IL-1 was decreased in dense breasts. No differences were found in levels of IL-1, IL-1Ra, CCL2, leptin, adiponectin, or leptin:adiponectin ratio between the two breast tissue types. Significant positive correlations between LTF and the pro-inflammatory cytokines as well as between the cytokines were detected. Stainings of the core biopsies exhibited increased levels of immune cells in dense breast tissue.Our data show that dense breast tissue in postmenopausal women is associated with a pro-inflammatory microenvironment and, if confirmed in a larger cohort, suggests novel targets for prevention therapies for women with dense breast tissue.

Subject headings and genre

MEDICIN OCH HÄLSOVETENSKAP Klinisk medicin Cancer och onkologi hsv//swe
MEDICAL AND HEALTH SCIENCES Clinical Medicine Cancer and Oncology hsv//eng
Cytokines; mammary gland; mammography; microdialysis; MRI

Added entries (persons, corporate bodies, meetings, titles ...)

Rzepecka, AnnaRegion Östergötland, Röntgenkliniken i Linköping (author)
Romu, ThobiasLinköpings universitet,Medicinsk informatik,Tekniska fakulteten,Centrum för medicinsk bildvetenskap och visualisering, CMIV(Swepub:liu)thoro52 (author)
Borga, MagnusLinköpings universitet,Medicinsk informatik,Tekniska fakulteten,Centrum för medicinsk bildvetenskap och visualisering, CMIV(Swepub:liu)magbo72 (author)
Dahlqvist Leinhard, Olof,1978-Linköpings universitet,Avdelningen för radiologiska vetenskaper,Medicinska fakulteten,Centrum för medicinsk bildvetenskap och visualisering, CMIV,Region Östergötland, Radiofysikavdelningen US(Swepub:liu)oloda24 (author)
Lundberg, PeterLinköpings universitet,Centrum för medicinsk bildvetenskap och visualisering, CMIV,Avdelningen för radiologiska vetenskaper,Medicinska fakulteten,Region Östergötland, Radiofysikavdelningen US(Swepub:liu)petlu11 (author)
Kihlberg, JohanLinköpings universitet,Centrum för medicinsk bildvetenskap och visualisering, CMIV,Avdelningen för radiologiska vetenskaper,Medicinska fakulteten,Region Östergötland, Röntgenkliniken i Linköping(Swepub:liu)johki53 (author)
Dabrosin, CharlottaLinköpings universitet,Avdelningen för kliniska vetenskaper,Medicinska fakulteten,Region Östergötland, Onkologiska kliniken US(Swepub:liu)chada67 (author)
Linköpings universitetAvdelningen för kliniska vetenskaper (creator_code:org_t)

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In:Oncoimmunology: TAYLOR & FRANCIS INC5:102162-40112162-402X

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