Anne C. Bay-Jensen

Anne C. Bay-Jensen

København, Region Hovedstaden, Danmark
2 t følgere 500+ forbindelser

Om

Biomedical research scientist, Director, Rheumatology.

Background: MSc in…

Artikler af Anne C.

Aktivitet

Tilmeld dig for at se al aktivitet

Erfaring

  • Nordic Bioscience A/S Grafik

    Nordic Bioscience A/S

    Herlev, Capital Region, Denmark

  • -

    Herlev, Capital Region, Denmark

  • -

    Herlev, Capital Region, Denmark

  • -

  • -

    Herlev, Denmark

  • -

  • -

  • -

  • -

Uddannelse

  • AVT Business School

  • Aktiviteter og foreninger:Rushold 1996 "Badedyr" [danish] Erasmus student Mentor

  • Aktiviteter og foreninger:ERASMUS program

Udgivelser

  • OA phenotypes, rather than disease stage, drive structural progression - identification of structural progressors from 2 phase III randomized clinical studies with symptomatic Knee OA

    Osteoarthritis and Cartilage

    The aim of this study was to identify key characteristics of disease progression through investigation of the association of radiographic progression over two years with baseline Joint Space Width (JSW), Kellgren Lawrence (KL) grade, WOMAC pain, Joint Space Narrowing (JSN), and BMI.
    Data from 2,206 subjects (4,390 knees) were combined for this post-hoc analysis of two randomized, double-blind, multi-center, placebo-controlled phase III trials (NCT00486434 and NCT00704847) that evaluated the…

    The aim of this study was to identify key characteristics of disease progression through investigation of the association of radiographic progression over two years with baseline Joint Space Width (JSW), Kellgren Lawrence (KL) grade, WOMAC pain, Joint Space Narrowing (JSN), and BMI.
    Data from 2,206 subjects (4,390 knees) were combined for this post-hoc analysis of two randomized, double-blind, multi-center, placebo-controlled phase III trials (NCT00486434 and NCT00704847) that evaluated the efficacy and safety of 2-years treatment with oral salmon calcitonin of subjects with painful knee OA. Analysis of structural progression was made based on data from the placebo group, stratifying patients into quartiles for WOMAC pain, BMI and KL grades.
    There was a clear positive and significant correlation between KL grade and WOMAC pain and total WOMAC, albeit the variance in pain measures was from min-to-max for all KL categories, emphasizing the heterogeneity of this patient population and pain perception. 32% of target knees did not progress, and only 51% had changes over minimum significant change (MSC).The mean JSN at 2-years for the non-target knee was 0.25±0.02mm and 0.32±0.02 for the target knee. BMI, KL-Score and WOMAC pain was diagnostic, but only KL-score and pain had prognostic value, albeit pain in a non-linear manner.

    These data from the largest clinical trial dataset in OA to date clearly describe significant associations between KL grade, JSW, pain and BMI in patients with symptomatic knee OA. KL grade, BMI and WOMAC pain were diagnostically associated with OA based on JSW but only KL-score and pain in a non-linear fashion was prognostic. These results suggest that disease phenotypes, rather than disease status, are responsible for disease progression. This dataset may be used for identification of different phenotypes of OA, and biomarkers associated with those.

    Andre forfattere
    Se udgivelse
  • Cartilage turnover reflected by metabolic processing of type II collagen: a novel marker of anabolic function in chondrocytes.

    International Journal of Molecular Science

    The aim of this study was to enable measurement of cartilage formation by a novel biomarker of type II collagen formation. The competitive enzyme-linked immunosorbent assay (ELISA) Pro-C2 was developed and characterized for assessment of the beta splice variant of type II procollagen (PIIBNP). This is expected to originate primarily from remodeling of hyaline cartilage. A mouse monoclonal antibody (Mab) was raised in mouse, targeting specifically PIIBNP (QDVRQPG) and used in development of the…

    The aim of this study was to enable measurement of cartilage formation by a novel biomarker of type II collagen formation. The competitive enzyme-linked immunosorbent assay (ELISA) Pro-C2 was developed and characterized for assessment of the beta splice variant of type II procollagen (PIIBNP). This is expected to originate primarily from remodeling of hyaline cartilage. A mouse monoclonal antibody (Mab) was raised in mouse, targeting specifically PIIBNP (QDVRQPG) and used in development of the assay. The specificity, sensitivity, 4-parameter fit and stability of the assay were tested. Levels of PIIBNP were quantified in human serum (0.6-2.2 nM), human amniotic fluid (163-188 nM) and sera from different animal species, e.g., fetal bovine serum (851-901 nM) with general good linearity (100% (SD 7.6) recovery) and good intra- and inter-assay variation (CV% < 10). Dose (0.1 to 100 ng/mL) and time (7, 14 and 21 days) dependent release of PIIBNP were evaluated in the conditioned medium from bovine cartilage explants (BEX) and human cartilage explants (HEX) upon stimulation with insulin-like growth factor (IGF-1), transforming growth factor (TGF)-β1 and fibroblastic growth factor-2 (FGF-2). TGF-β1 and IGF-1 in concentrations of 10-100 ng/mL significantly (p < 0.05) induced release of PIIBNP in BEX compared to conditions without treatment (WO). In HEX, IGF-1 100 ng/mL was able to induce a significant increase of PIIBNP after one week compared to WO. FGF-2 did not induce a PIIBNP release in our models. To our knowledge this is the first assay, which is able to specifically evaluate PIIBNP excretion. The Pro-C2 assay seems to provide a promising and novel marker of type II collagen formation.

    Andre forfattere
    Se udgivelse
  • Mice over-expressing salmon calcitonin have strongly attenuated osteoarthritic histophathological changes after destabilization of the medial meniscus

    Osteoarthritis Cartilage

    OBJECTIVE: Calcitonin is well-known for its inhibitory actions on bone-resorbing osteoclasts and recently potential beneficial effects on cartilage were shown. We investigated effects of salmon calcitonin (sCT) on the articular cartilage and bone, after destabilization of the medial meniscus (DMM) in normal and sCT over-expressing mice.

    DESIGN: Bone phenotype of transgenic (TG) C57Bl/6 mice over-expressing sCT at 6months and 12months was investigated by (1) serum osteocalcin and urinary…

    OBJECTIVE: Calcitonin is well-known for its inhibitory actions on bone-resorbing osteoclasts and recently potential beneficial effects on cartilage were shown. We investigated effects of salmon calcitonin (sCT) on the articular cartilage and bone, after destabilization of the medial meniscus (DMM) in normal and sCT over-expressing mice.

    DESIGN: Bone phenotype of transgenic (TG) C57Bl/6 mice over-expressing sCT at 6months and 12months was investigated by (1) serum osteocalcin and urinary deoxypyridinoline and (2) dynamic and normal histomorphometry of vertebrae bodies. In subsequent evaluation of cartilage and subchondral bone changes, 44 10-week old TG or wild-type (WT) mice were randomized into four groups and subjected to DMM or sham-operations. After 7weeks animals were sacrificed, and knee joints were isolated for histological analysis.

    RESULTS: Trabecular bone volume (BV/TV) increased 150% after 6months and 300% after 12months in sCT-expressing mice when compared to WT controls (P<0.05). Osteoblast number, bone formation rate and osteocalcin measurements were not affected in TG mice over-expressing sCT. In WT animals, a 5-fold increase in the quantitative erosion index was observed after DMM, and the semi-quantitative OARSI score showed over 400% (P<0.001) increase, compared to sham-operated WT mice. DMM-operated TG mice were protected against cartilage erosion and showed a 65% and 64% (P<0.001) reduction, respectively, for the two histopathological evaluation methods.

    CONCLUSIONS: sCT over-expressing mice had higher bone volume, and were protected against cartilage erosion. These data suggest that increased levels of sCT may hamper the pathogenesis of osteoarthritis (OA). However more studies are necessary to confirm these preliminary results.

    Andre forfattere
    Se udgivelse
  • Investigation of the direct effects of salmon calcitonin on human osteoarthritic chondrocytes

    BMC Musculoskelet Disord

    BACKGROUND: Calcitonin has been demonstrated to have chondroprotective effects under pre-clinical settings. It is debated whether this effect is mediated through subchondral-bone, directly on cartilage or both in combination. We investigated possible direct effects of salmon calcitonin on proteoglycans and collagen-type-II synthesis in osteoarthritic (OA) cartilage.

    METHODS: Human OA cartilage explants were cultured with salmon calcitonin [100 pM-100 nM]. Direct effects of calcitonin on…

    BACKGROUND: Calcitonin has been demonstrated to have chondroprotective effects under pre-clinical settings. It is debated whether this effect is mediated through subchondral-bone, directly on cartilage or both in combination. We investigated possible direct effects of salmon calcitonin on proteoglycans and collagen-type-II synthesis in osteoarthritic (OA) cartilage.

    METHODS: Human OA cartilage explants were cultured with salmon calcitonin [100 pM-100 nM]. Direct effects of calcitonin on articular cartilage were evaluated by 1) measurement of proteoglycan synthesis by incorporation of radioactive labeled 35SO4 [5 microCi] 2) quantification of collagen-type-II formation by pro-peptides of collagen type II (PIINP) ELISA, 3) QPCR expression of the calcitonin receptor in OA chondrocytes using four individual primer pairs, 4) activation of the cAMP signaling pathway by EIA and, 5) investigations of metabolic activity by AlamarBlue.

    RESULTS: QPCR analysis and subsequent sequencing confirmed expression of the calcitonin receptor in human chondrocytes. All doses of salmon calcitonin significantly elevated cAMP levels (P < 0.01 and P < 0.001). Calcitonin significantly and concentration-dependently [100 pM-100 nM] induced proteoglycan synthesis measured by radioactive 35SO4 incorporation, with a 96% maximal induction at 10 nM (P < 0.001) corresponding to an 80% induction of 100 ng/ml IGF, (P < 0.05). In alignment with calcitonin treatments [100 pM-100 nM] resulted in 35% (P < 0.01) increased PIINP levels.

    CONCLUSION: Calcitonin treatment increased proteoglycan and collagen synthesis in human OA cartilage. In addition to its well-established effect on subchondral bone, calcitonin may prove beneficial to the management of joint diseases through direct effects on chondrocytes.

    Andre forfattere
    Se udgivelse
  • Application of biochemical markers in development of drugs for treatment of osteoarthritis

    Biomarkers

    Osteoarthritis is a chronic disease for which no efficacious medical intervention is yet available. Recent disappointments in late-stage clinical development of disease-modifying osteoarthritic drugs (DMOADs) have precipitated efforts in biomarker discovery aimed at developing an analytical tool box with the potential to improve the clinical development process. In this review, we seek to provide an overview of the biochemical marker repertoire currently available with a special focus on data…

    Osteoarthritis is a chronic disease for which no efficacious medical intervention is yet available. Recent disappointments in late-stage clinical development of disease-modifying osteoarthritic drugs (DMOADs) have precipitated efforts in biomarker discovery aimed at developing an analytical tool box with the potential to improve the clinical development process. In this review, we seek to provide an overview of the biochemical marker repertoire currently available with a special focus on data originating from their application in clinical development programmes. Finally, we discuss possible directions in future biomarker research

    Andre forfattere
    Se udgivelse
  • Circulating citrullinated vimentin fragments reflect disease burden in Ankylosing Spondylitis and has prognostic capacity for radiographic progression.

    Arthritis & Rheumatism

    OBJECTIVE: Ankylosing spondylitis (AS) has been considered a seronegative rheumatic disease based on absent or low levels of antibodies against citrullinated proteins. The present study was undertaken to evaluate whether a citrullinated and matrix metalloproteinase-degraded fragment of vimentin (VICM) could be a prognostic biomarker in AS.

    METHODS: VICM was measured in serum samples from healthy controls (n=35), control patients with rheumatoid arthritis (RA) (n=47), and patients with AS…

    OBJECTIVE: Ankylosing spondylitis (AS) has been considered a seronegative rheumatic disease based on absent or low levels of antibodies against citrullinated proteins. The present study was undertaken to evaluate whether a citrullinated and matrix metalloproteinase-degraded fragment of vimentin (VICM) could be a prognostic biomarker in AS.

    METHODS: VICM was measured in serum samples from healthy controls (n=35), control patients with rheumatoid arthritis (RA) (n=47), and patients with AS (n=201). The optimal cutoff for diagnostic sensitivity and specificity was determined by receiver operating characteristic curve analysis. Baseline and 2-year spine radiographs were available from 118 AS patients, and were scored using the modified Stoke AS Spine Score (mSASSS). We assessed correlations with patient demographic characteristics (age, disease duration), disease activity (Bath AS Disease Activity Index [BASDAI], C-reactive protein level), and disease severity (mSASSS) using Spearman's rho. The independent association of VICM with 2-year radiographic progression, defined as a change of >0 in the mSASSS or the development of a new syndesmophyte, was analyzed by multivariate regression.

    CONCLUSION: The present findings show that serum VICM may be of prognostic value in AS. The data also suggest that citrullination may be relevant in AS pathogenesis.

    Se udgivelse

Projekter

  • EU FP7 Project: Novel Diagnostics and Biomarkers for Early Identification of Chronic Inflammatory Joint Diseases (D-BOARD)

    – nu

    Chronic inflammatory diseases of joints are major causes of disability in the ageing population. Osteoarthritis (OA) is one of the most common types of arthritis and a major cause of pain and disability in older individuals. OA is expected to place a heavy burden on European healthcare systems, as European citizens grow older. Cartilage damage in OA is detected radiographically by decreases in joint space width (JSW). However, radiographic evidence is seen only after significant cartilage…

    Chronic inflammatory diseases of joints are major causes of disability in the ageing population. Osteoarthritis (OA) is one of the most common types of arthritis and a major cause of pain and disability in older individuals. OA is expected to place a heavy burden on European healthcare systems, as European citizens grow older. Cartilage damage in OA is detected radiographically by decreases in joint space width (JSW). However, radiographic evidence is seen only after significant cartilage degradation has already taken place. The early stages of the disease may remain latent and asymptomatic for many years. Therefore, there is an acute need for reliable biomarkers and diagnostic tests that can facilitate earlier diagnosis of OA, and inform the prognosis, monitoring and therapeutic strategies for chronic and disabling forms of this disease. However, there is currently a lack of reliable, quantifiable and easily measured biomarkers that provide an earlier diagnosis of OA, inform on the prognostic of the disease and monitor and predict responses to therapeutic modalities. Biomarkers of tissue turnover in joints can reflect disease relevant biological activity and provide valuable information that may be useful diagnostically and therapeutically, potentially enabling a more rational and personalized approach to healthcare management. The proliferation of omic technologies has facilitated rapid progress in biomarker research. Combinations of omic technologies are dominating the biomarker research arena and are playing increasingly important roles in the identification, validation and qualification of new biomarkers. The aim of the D-BOARD consortium is to bring together leading academic institutions and European Small and Medium Enterprises (SMEs) to focus on the identification, validation and qualification of new combination biomarkers and the development of diagnostic tests capable of subclinical disease diagnosis for degenerative and inflammatory diseases of joints.

    Andre skabere
    Se projekt
  • EU FP7 Project: Novel Diagnostics and Biomarkers for Early Identification of Chronic Inflammatory Joint Diseases (D-BOARD)

    – nu

    Chronic inflammatory diseases of joints are major causes of disability in the ageing population. Osteoarthritis (OA) is one of the most common types of arthritis and a major cause of pain and disability in older individuals. OA is expected to place a heavy burden on European healthcare systems, as European citizens grow older. Cartilage damage in OA is detected radiographically by decreases in joint space width (JSW). However, radiographic evidence is seen only after significant cartilage…

    Chronic inflammatory diseases of joints are major causes of disability in the ageing population. Osteoarthritis (OA) is one of the most common types of arthritis and a major cause of pain and disability in older individuals. OA is expected to place a heavy burden on European healthcare systems, as European citizens grow older. Cartilage damage in OA is detected radiographically by decreases in joint space width (JSW). However, radiographic evidence is seen only after significant cartilage degradation has already taken place. The early stages of the disease may remain latent and asymptomatic for many years. Therefore, there is an acute need for reliable biomarkers and diagnostic tests that can facilitate earlier diagnosis of OA, and inform the prognosis, monitoring and therapeutic strategies for chronic and disabling forms of this disease. However, there is currently a lack of reliable, quantifiable and easily measured biomarkers that provide an earlier diagnosis of OA, inform on the prognostic of the disease and monitor and predict responses to therapeutic modalities. Biomarkers of tissue turnover in joints can reflect disease relevant biological activity and provide valuable information that may be useful diagnostically and therapeutically, potentially enabling a more rational and personalized approach to healthcare management. The proliferation of omic technologies has facilitated rapid progress in biomarker research. Combinations of omic technologies are dominating the biomarker research arena and are playing increasingly important roles in the identification, validation and qualification of new biomarkers. The aim of the D-BOARD consortium is to bring together leading academic institutions and European Small and Medium Enterprises (SMEs) to focus on the identification, validation and qualification of new combination biomarkers and the development of diagnostic tests capable of subclinical disease diagnosis for degenerative and inflammatory diseases of joints.

    Andre skabere
    Se projekt

Sprog

  • English

    Komplet professionel færdighed

  • Danish

    Modersmåls- eller tosprogsfærdighed

  • German

    Elementær færdighed

Anbefalinger, som du har modtaget

Flere aktiviteter af Anne C.

Se hele Anne C.s profil

  • Se, hvem I begge kender
  • Bliv introduceret
  • Kontakt Anne C. direkte
Tilmeld dig for at se hele profilen

Andre lignende profiler

Få nye kompetencer med disse kurser