Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review
Ultrasensitive photonic microsystem enabling sub-micrometric monitoring of arterial oscillations for advanced cardiovascular studies. / Rodríguez-Rodríguez, Rosalía; Ackermann, Tobias Nils; Plaza, Jose Antonio et al.
In: Frontiers in Physiology, Vol. 10, 940, 07.2019.Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review
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TY - JOUR
T1 - Ultrasensitive photonic microsystem enabling sub-micrometric monitoring of arterial oscillations for advanced cardiovascular studies
AU - Rodríguez-Rodríguez, Rosalía
AU - Ackermann, Tobias Nils
AU - Plaza, Jose Antonio
AU - Simonsen, Ulf
AU - Matchkov, Vladimir
AU - Llobera, Andreu
AU - Munoz-Berbel, Xavier
PY - 2019/7
Y1 - 2019/7
N2 - Cardiovascular diseases are the first cause of death globally. Their early diagnosis requires ultrasensitive tools enabling the detection of minor structural and functional alterations in small arteries. Such analyses have been traditionally performed with video imaging-based myographs, which helped to investigate the pathophysiology of the microvessels. Since new vascular questions have emerged, substantial modifications are necessary to improve the performance of imaging and tracking software, reducing the cost and minimizing the microvessel cleaning and manipulation. To address these limitations, we present a photonic microsystem fabricated in polydimethylsiloxane and integrating micro-optical elements and a lightguide-cantilever for sub-micrometric analysis of small arteries (between 125 and 400 mu m of basal diameter). This technology enables simultaneous measurement of arterial distension, stiffness, vasomotion, and heartbeat and without the need for advanced imaging system. The microsystem has a limit of detection of 2 mu m, five times lower than video imaging-based myographs, is two times more sensitive than them (0.5 mu m/mmHg), reduces variability to half and doubles the linear range reported in these myographs. More importantly, it allows the analysis of intact arteries preserving the integrity and function of surrounding tissues. Assays can be conducted in three configurations according to the surrounding tissue: (i) isolated arteries (in vitro) where the surrounding tissue is partially removed, (ii) non-isolated arteries (in vivo) with surrounding tissue partially removed, and (iii) intact arteries in vivo preserving surrounding tissue as well as function and integrity. This technology represents a step forward in the prediction of cardiovascular risk.
AB - Cardiovascular diseases are the first cause of death globally. Their early diagnosis requires ultrasensitive tools enabling the detection of minor structural and functional alterations in small arteries. Such analyses have been traditionally performed with video imaging-based myographs, which helped to investigate the pathophysiology of the microvessels. Since new vascular questions have emerged, substantial modifications are necessary to improve the performance of imaging and tracking software, reducing the cost and minimizing the microvessel cleaning and manipulation. To address these limitations, we present a photonic microsystem fabricated in polydimethylsiloxane and integrating micro-optical elements and a lightguide-cantilever for sub-micrometric analysis of small arteries (between 125 and 400 mu m of basal diameter). This technology enables simultaneous measurement of arterial distension, stiffness, vasomotion, and heartbeat and without the need for advanced imaging system. The microsystem has a limit of detection of 2 mu m, five times lower than video imaging-based myographs, is two times more sensitive than them (0.5 mu m/mmHg), reduces variability to half and doubles the linear range reported in these myographs. More importantly, it allows the analysis of intact arteries preserving the integrity and function of surrounding tissues. Assays can be conducted in three configurations according to the surrounding tissue: (i) isolated arteries (in vitro) where the surrounding tissue is partially removed, (ii) non-isolated arteries (in vivo) with surrounding tissue partially removed, and (iii) intact arteries in vivo preserving surrounding tissue as well as function and integrity. This technology represents a step forward in the prediction of cardiovascular risk.
KW - Integrated micro-optics
KW - Microvasculature
KW - Myography
KW - Opto-mechanics
KW - Photonic microsystem
KW - Soft-lithography
KW - VASOMOTION
KW - photonic microsystem
KW - soft-lithography
KW - integrated micro-optics
KW - opto-mechanics
KW - myography
KW - SMOOTH-MUSCLE
KW - microvasculature
UR - http://www.scopus.com/inward/record.url?scp=85070089279&partnerID=8YFLogxK
U2 - 10.3389/fphys.2019.00940
DO - 10.3389/fphys.2019.00940
M3 - Journal article
C2 - 31396105
AN - SCOPUS:85070089279
VL - 10
JO - Frontiers in Physiology
JF - Frontiers in Physiology
SN - 1664-042X
M1 - 940
ER -