Université de Fribourg

Myocardial infarction stabilization by cell-based expression of controlled Vascular Endothelial Growth Factor levels

Melly, Ludovic ; Cerino, Giulia ; Frobert, Aurélien ; Cook, Stéphane ; Giraud, Marie-Noëlle ; Carrel, Thierry ; Tevaearai Stahel, Hendrik T. ; Eckstein, Friedrich ; Rondelet, Benoît ; Marsano, Anna ; Banfi, Andrea

In: Journal of Cellular and Molecular Medicine, 2018, p. -

Vascular Endothelial Growth Factor (VEGF) can induce normal or aberrant angiogenesis depending on the amount secreted in the microenvironment around each cell. Towards a possible clinical translation, we developed a Fluorescence Activated Cell Sorting (FACS)‐based technique to rapidly purify transduced progenitors that homogeneously express a desired specific VEGF level from heterogeneous...

Université de Fribourg

Myocardial infarction does not affect circulating haematopoietic stem and progenitor cell self‐renewal ability in a rat model

Kröpfl, J. M. ; Spengler, C. M. ; Frobert, Aurelien ; Ajalbert, Guillaume ; Giraud, Marie-Noëlle

In: Experimental Physiology, 2018, vol. 103, no. 1, p. 1–8

Given the importance of peripheral blood haematopoietic stem and progenitor cells (HPCs) in post-acute regeneration after acute myocardial infarction (MI), the aim of the present study was to investigate the number and secondary replating capacity/self-renewal ability of HPCs in peripheral blood before and 2 weeks after MI. In female Lewis inbred rats (n = 9), MI was induced by ligation of...

Université de Fribourg

Photodynamic therapy for the treatment of atherosclerotic plaque: Lost in translation?

Jain, Manish ; Zellweger, Matthieu ; Wagnières, Georges ; Bergh, Hubert van den ; Cook, Stéphane ; Giraud, Marie-Noëlle

In: Cardiovascular Therapeutics, 2017, vol. 35, no. 2, p. -

Acute coronary syndrome is a life-threatening condition of utmost clinical importance, which, despite recent progress in the field, is still associated with high morbidity and mortality. Acute coronary syndrome results from a rupture or erosion of vulnerable atherosclerotic plaque with secondary platelet activation and thrombus formation, which leads to partial or complete luminal obstruction...

Université de Fribourg

Prognostic value of troponin I for infarct size to improve preclinical myocardial infarction small animal models

Frobert, Aurélien ; Valentin, Jérémy ; Magnin, Jean-Luc ; Riedo, Erwin ; Cook, Stéphane ; Giraud, Marie-Noëlle

In: Frontiers in Physiology - Clinical and Translational Physiology, 2015, vol. 6, p. 353

Coronary artery ligations to induce myocardial infarction (MI) in mice and rats are widely used in preclinical investigation. However, myocardial ischemic damage and subsequent infarct size are highly variable. The lack of standardization of the model impairs the probability of effective translation to the clinic. Cardiac Troponin I (cTnI) is a major clinically relevant biomarker.Aim: In the...

Université de Fribourg

Considering the degradation effects of amino-functional plasma polymer coatings for biomedical application

Hegemann, Dirk ; Hanselmann, Barbara ; Guimond, Sébastien ; Fortunato, Giuseppino ; Giraud, Marie-Noëlle ; Guex, Anne Géraldine

In: Surface and Coatings Technology, 2014, vol. 255, p. 90–95

Materials for biomedical applications typically involve surface engineering. Scaffolds used for tissue engineering, for example, require a surface functionalization in order to support cell growth. The deposition of functional plasma polymer coatings seems to be an attractive approach to modify substrates for biomedical applications.Possible degradation of highly functional plasma polymers and...

Université de Fribourg

Anisotropically oriented electrospun matrices with an imprinted periodic micropattern: a new scaffold for engineered muscle constructs

Guex, Anne Géraldine ; Birrer, Dominique Lisa ; Fortunato, Giuseppino ; Tevaearai, Hendrik Tinorua ; Giraud, Marie-Noëlle

In: Biomedical Materials, 2013, vol. 8, no. 2, p. 021001

Engineered muscle constructs provide a promising perspective on the regeneration or substitution of irreversibly damaged skeletal muscle. However, the highly ordered structure of native muscle tissue necessitates special consideration during scaffold development. Multiple approaches to the design of anisotropically structured substrates with grooved micropatterns or parallel-aligned fibres have...