| The effect of venous and arterial occlusion of the arm on changes in tissue hemodynamics, oxygenation, and ultra-weak photon emission. | |
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MedLine Citation:
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PMID: 22879042 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Ultra-weak photon emission (UPE) is a general feature of living -biological systems. To gain further insights into the origin of UPE and its physiological significance, the aim of the present study was to investigate the connection between hemodynamics (HD), oxygenation (OX), and UPE. Therefore, during venous and arterial occlusion (VO, AO), changes of UPE and surrogates of HD as well as OX were measured simultaneously using two photomultipliers and near-infrared spectroscopy, respectively. We showed that (1) changes in UPE correlate significantly nonlinearly with changes in oxyhemoglobin (Δ[O(2)Hb]), deoxyhemoglobin (Δ[HHb]), and hemoglobin difference (Δ[HbD] = Δ[O(2)Hb]-Δ[HHb]), indicating a complex association between UPE and tissue HD/OX; (2) UPE decreases significantly during AO but not during VO; (3) UPE increases significantly after AO; and (4) the view that ROS are the source of UPE is generally supported by the present study, although some findings remain unexplained in the context of the theory of ROS-mediated UPE generation. In conclusion, the present study revealed new insights into the interplay between HD, OX, and UPE and opens up new questions that have to be addressed by future studies. |
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Authors:
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Felix Scholkmann; Olaf Schraa; Roeland van Wijk; Martin Wolf |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Advances in experimental medicine and biology Volume: 765 ISSN: 0065-2598 ISO Abbreviation: Adv. Exp. Med. Biol. Publication Date: 2013 |
Date Detail:
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Created Date: 2012-08-10 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0121103 Medline TA: Adv Exp Med Biol Country: United States |
Other Details:
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Languages: eng Pagination: 257-64 Citation Subset: IM |
Affiliation:
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Division of Neonatology, Biomedical Optics Research Laboratory, University Hospital Zurich, Frauenklinikstr. 10, 8091, Zurich, Switzerland, Felix.Scholkmann@usz.ch. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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