Abstract:
:Remote photoplethysmography (PPG) is an optical measurement technique with established applications in vital signs monitoring. Recently, the consensual understanding of blood volume variations (BVVs) as the origin of PPG signals was challenged, raising validity concerns about the remote SpO2 methodology. Recognizing the imperative for new opto-physiological evidence, this investigation supports the volumetric hypothesis with living skin experiments and Monte Carlo simulations of remote PPG-amplitude in visible light (VIS) and infrared (IR). Multilayered models of the skin were developed to simulate the separate contributions from skin layers containing pulsatile arterioles to the PPG signal in the 450-1000 nm range. The simulated spectra were qualitatively compared with observations of the resting and compressed finger pad, and complemented with videocapillaroscopy. Our results indicate that remote PPG systems indeed probe arterial blood. Green wavelengths probe dermal arterioles while red-IR wavelengths also reach subcutaneous BVVs. Owing to stable penetration depths, the red-IR diagnostic window promotes the invariance of SpO2 measurements to skin non-homogeneities.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Moço AV,Stuijk S,de Haan Gdoi
10.1038/s41598-018-26068-2subject
Has Abstractpub_date
2018-05-31 00:00:00pages
8501issue
1issn
2045-2322pii
10.1038/s41598-018-26068-2journal_volume
8pub_type
杂志文章abstract::Pulsed electromagnetic fields (PEMFs) have been considered a potential treatment modality for fracture healing, however, the mechanism of their action remains unclear. Mammalian target of rapamycin (mTOR) signaling may affect osteoblast proliferation and differentiation. This study aimed to assess the osteogenic diffe...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-23499-9
更新日期:2018-03-23 00:00:00
abstract::Enterobacter aerogenes LU2 was isolated from cow rumen and recognized as a potential succinic acid producer in our previous study. Here, we present the first complete genome sequence of this new, wild strain and report its basic genetic features from a biotechnological perspective. The MinION single-molecule nanopore ...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-58929-0
更新日期:2020-02-06 00:00:00
abstract::Human metapneumovirus (HMPV) is an important viral respiratory pathogen worldwide. Current knowledge regarding the genetic diversity, seasonality and transmission dynamics of HMPV among adults and children living in tropical climate remains limited. HMPV prevailed at 2.2% (n = 86/3,935) among individuals presented wit...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep27730
更新日期:2016-06-09 00:00:00
abstract::Gastric cancer (GC) is a common aggressive malignant tumor with high incidence and mortality worldwide. GC is classified into intestinal and diffuse types according to the histo-morphological features. Because of distinctly different clinico-pathological features, new cancer therapy strategies and in vitro preclinical...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep41541
更新日期:2017-01-27 00:00:00
abstract::Immune cell infiltrates in melanoma have important prognostic value. Gene expression analysis may simultaneously quantify numbers and function of multiple immune cell subtypes in formalin-fixed paraffin-embedded (FFPE) tissues. Prior studies report single gene expression can represent individual immune cell subtypes, ...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-74996-9
更新日期:2020-10-27 00:00:00
abstract::Naturally occurring metals and metalloids [metal(loid)s] are essential for the physiological functioning of wildlife; however, environmental contamination by metal(loid) and plastic pollutants is a health hazard. Metal(loid)s may interact with plastic in the environment and there is mixed evidence about whether plasti...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-75024-6
更新日期:2020-10-22 00:00:00
abstract::1-aminoperylene diimide/TiO2/MoS2 composite (NH2-PDI/TiO2/MoS2) with ordered structure was prepared by hydrothermal synthesis method. The composite was characterized by XRD, SEM, FTIR, XPS, BET, DRS, PL, EIS, Raman, photocurrent, and Mott-Schottky plots spectroscopy. The potential positions of the conduction and valen...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-78894-y
更新日期:2020-12-15 00:00:00
abstract::The transition energies and formation energies of N, C, F, Cl, and S as substitutional dopants in Ag3PO4 are studied using first-principles calculations based on the hybrid Hartree-Fock density functional, which correctly reproduces the band gap and thus provides the accurate defect states. Our results show that NO an...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep12750
更新日期:2015-08-03 00:00:00
abstract::Pseudoalteromonas haloplanktis TAC125 is among the most commonly studied bacteria adapted to cold environments. Aside from its ecological relevance, P. haloplanktis has a potential use for biotechnological applications. Due to its importance, we decided to take advantage of next generation sequencing (Illumina) and th...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-52832-z
更新日期:2019-11-11 00:00:00
abstract::Proper regulation of endothelial cell-cell contacts is essential for physiological functioning of the endothelium. Interendothelial junctions are actively involved in the control of vascular leakage, leukocyte diapedesis, and the initiation and progression of angiogenesis. We found that the RNA-binding protein quaking...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep21643
更新日期:2016-02-24 00:00:00
abstract::An amendment to this paper has been published and can be accessed via a link at the top of the paper. ...
journal_title:Scientific reports
pub_type: 已发布勘误
doi:10.1038/s41598-020-58755-4
更新日期:2020-01-30 00:00:00
abstract::Neutron energy is directly correlated with the energy of the incident ions in experiments involving laser-driven nuclear reactions. Using high-energy incident ions reduces the energy concentration of the generated neutrons. A novel "laser-collider" method was used at the Shenguang II laser facility to produce monoener...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep27363
更新日期:2016-06-02 00:00:00
abstract::High stable C/S composites are fabricated by a novel high-temperature sulfur infusion into micro-mesoporous carbon method following with solvent cleaning treatment. The C/S composite cathodes show high Coulombic efficiency, long cycling stability and good rate capability in the electrolyte of 1.0 M LiPF6 + EC/DEC (1:1...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep04842
更新日期:2014-04-29 00:00:00
abstract::Worldwide, prostate cancer (PCa) is the second most common malignancy in males. We undertook a meta-analysis to compare the efficacy and safety of conventional laparoscopic radical prostatectomy with a transperitoneal (TLRP) approach, versus that of an extraperitoneal (ELRP) approach, for treatment of localized PCa. A...
journal_title:Scientific reports
pub_type: 杂志文章,meta分析
doi:10.1038/srep14442
更新日期:2015-10-13 00:00:00
abstract::Spectroscopic techniques combined with chemometrics methods have proven to be effective tools for the discrimination of objects with similar properties. In this work, terahertz time-domain spectroscopy (THz-TDS) combined with discriminate analysis (DA) and principal component analysis (PCA) with derivative pretreatmen...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep11115
更新日期:2015-07-08 00:00:00
abstract::Stromal capillary sheath cells in human spleens strongly express CD271, the low affinity nerve growth factor receptor p75. Serial sections of a representative adult human spleen were double-stained for CD271 versus smooth muscle alpha actin (SMA) plus CD34 to visualise capillary sheaths, the arterial tree and endothel...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-34105-3
更新日期:2018-10-24 00:00:00
abstract::We provide a unified and exact framework for the variance-based uncertainty relations. This unified framework not only recovers some well-known previous uncertainty relations, but also fixes the deficiencies of them. Utilizing the unified framework, we can construct the new uncertainty relations in both product and su...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-56803-2
更新日期:2020-01-10 00:00:00
abstract::Volumetric and morphometric studies have demonstrated structural abnormalities related to chronic epilepsies on a cohort- and population-based level. On a single-patient level, specific patterns of atrophy or cortical reorganization may be widespread and heterogeneous but represent potential targets for further person...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-10707-1
更新日期:2017-09-07 00:00:00
abstract::Alterations of carbohydrate structures in cancer cells are the most promising targets for developing clinical diagnostic reagents. Pancreatic cancer is one of the most difficult cancers to diagnose because it lacks definitive symptoms. Two antibodies were raised against human pancreatic ribonuclease 1 that bind to the...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep06715
更新日期:2014-10-22 00:00:00
abstract::Genotyping-by-sequencing (GBS) or restriction-site associated DNA marker sequencing (RAD-seq) is a practical and cost-effective method for analysing large genomes from high diversity species. This method of sequencing, coupled with methylation-sensitive enzymes (often referred to as methylation-sensitive restriction e...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-19655-w
更新日期:2018-02-01 00:00:00
abstract::A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has been fixed in the paper. ...
journal_title:Scientific reports
pub_type: 已发布勘误
doi:10.1038/s41598-019-44071-z
更新日期:2019-06-05 00:00:00
abstract::Although the use of metabarcoding to identify taxa in DNA mixtures is widely approved, its reliability in quantifying taxon abundance is still the subject of debate. In this study we investigated the relationships between the amount of pollen grains in mock solutions and the abundance of high-throughput sequence reads...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-61198-6
更新日期:2020-03-06 00:00:00
abstract::Marsupials have a functional placenta for a shorter period of time compared to that of eutherian species, and their altricial young reach the teats without any help from the mother. We have monitored the short intrauterine development of one marsupial, the tammar wallaby, with high-resolution ultrasound from reactivat...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep01458
更新日期:2013-01-01 00:00:00
abstract::The pathways of protein post-translational modifications (PTMs) have been shown to play particularly important roles for almost any biological process. Identification of PTM substrates along with information on the exact sites is fundamental for fully understanding or controlling biological processes. Alternative comp...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep25801
更新日期:2016-05-13 00:00:00
abstract::A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has not been fixed in the paper. ...
journal_title:Scientific reports
pub_type: 已发布勘误
doi:10.1038/s41598-018-36257-8
更新日期:2018-11-27 00:00:00
abstract::In chronic neurodegenerative syndromes, neurons progressively die through a generalized retraction pattern triggering retrograde axonal degeneration toward the cell bodies, which molecular mechanisms remain elusive. Recent observations suggest that direct activation of pro-apoptotic signaling in axons triggers local d...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep32777
更新日期:2016-09-08 00:00:00
abstract::The Fenton-like activity of nanoceria has attracted intensive attention for wastewater treatment in recent years. During the Fenton-like reaction, the adsorption of organic pollutants on catalyst surface plays a key role in their degradation. In this work, the adsorption-degradation of methylene blue (MB) and Congo re...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-36794-2
更新日期:2019-03-21 00:00:00
abstract::Ischemia-reperfusion (I/R) injury model has been widely applied to the study of microcirculation disturbance. In this work, we used laser oblique scanning optical microscopy (LOSOM) to observe the microcirculation system in the mesentery of rat model. Utilizing a localized point-scanning detection scheme, high-contras...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep01762
更新日期:2013-01-01 00:00:00
abstract::As an AAA-ATPase, Vps4 is important for function of multivesicular bodies (MVB) sorting pathway, which involves in cellular phenomena ranging from receptor down-regulation to viral budding to cytokinesis. The activity of Vps4 is stimulated by the interactions between Vta1 N-terminus (named as Vta1NTD) and Did2 fragmen...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep38710
更新日期:2016-12-07 00:00:00
abstract::Traumatic brain injury (TBI) has been associated with atherosclerosis and cardiovascular mortality in humans. However the causal relationship between TBI and vascular disease is unclear. This study investigated the direct role of TBI on vascular disease using a murine model of atherosclerosis. Apolipoprotein E deficie...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-23959-2
更新日期:2018-04-04 00:00:00