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McKenzie SR, Chiavaccini L, Moura RA, Santoro D. Comparison between dexmedetomidine and a combination of medetomidine-vatinoxan on muscle tissue saturation in privately-owned adult dogs undergoing intradermal testing. Res Vet Sci 2024; 171:105207. [PMID: 38460204 DOI: 10.1016/j.rvsc.2024.105207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 03/02/2024] [Accepted: 03/02/2024] [Indexed: 03/11/2024]
Abstract
This double-blinded randomized cross-over study compared the muscle tissue oxygen saturation (StO2) measured at the sartorius muscle after intramuscular (IM) injection of dexmedetomidine hydrochloride (HCl) and co-administration of vatinoxan HCl, a peripheral α2-adrenoceptor antagonist, and medetomidine HCl in healthy privately-owned dogs undergoing intradermal testing (IDAT). After written owner consent, dogs received IM injections of either dexmedetomidine (0.5 mg/m2, DEX) or medetomidine (1 mg/m2) and vatinoxan (20 mg/m2) (MVX). Once sedated, intradermal injections were given on the lateral thorax of each dog, and the study was repeated with the alternative sedation on the opposite side one week later. At the end of the study, sedation was reversed with atipamezole (5 mg/m2). Depth of sedation, cardiopulmonary parameters, StO2, and rectal temperature were recorded and compared using mixed effect linear models (α ≤ 0.05). MVX achieved adequate sedation faster [median (interquartile range), 10 (8, 10) minutes] compared to DEX [18 (15, 22) minutes; hazard ratio = 7.44, p = 0.013), with higher scores at 10- and 15-min post-injection. StO2 was significantly reduced for 30 min after injection (p < 0.001), independently of the treatment (p = 0.68). Cardiopulmonary variables favored MVX. However, higher heart rate did not correlate with improved StO2. There was no difference in either subjective or objective assessment of the wheal size between sedations (p > 0.05). Both sedation protocols, MVX and DEX, were deemed suitable for IDAT in dogs, with mild reductions in StO2 measured at the sartorius muscle that were not significantly different between treatments.
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Affiliation(s)
- Stuart R McKenzie
- Department of Comparative, Diagnostic and Population Medicine, College of Veterinary Medicine, University of Florida, 2015 SW 16th Ave., Gainesville, FL 32610, USA
| | - Ludovica Chiavaccini
- Department of Comparative, Diagnostic and Population Medicine, College of Veterinary Medicine, University of Florida, 2015 SW 16th Ave., Gainesville, FL 32610, USA.
| | - Raiane A Moura
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, 2015 SW 16th Ave., Gainesville, FL 32610, USA
| | - Domenico Santoro
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, 2015 SW 16th Ave., Gainesville, FL 32610, USA
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Massirio P, Cardiello V, Andreato C, Caruggi S, Battaglini M, Calandrino A, Polleri G, Mongelli F, Malova M, Minghetti D, Parodi A, Calevo MG, Tortora D, Rossi A, Ramenghi LA. Ventilatory Support, Extubation, and Cerebral Perfusion Changes in Pre-Term Neonates: A Near Infrared Spectroscopy Study. Neurotrauma Rep 2024; 5:409-416. [PMID: 38655113 PMCID: PMC11035839 DOI: 10.1089/neur.2023.0092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024] Open
Abstract
Early extubation is considered to be beneficial for pre-term neonates. On the other hand, premature extubation can cause lung derecruitment, compromised gas exchange, and need for reintubation, which may be associated with severe brain injury caused by sudden cerebral blood flow changes. We used near infrared spectroscopy (NIRS) to investigate changes in cerebral oxygenation (rScO2) and fractional tissue oxygen extraction (+) after extubation in pre-term infants. This is a single-center retrospective study of NIRS data at extubation time of all consecutive pre-term neonates born at our institution over a 1-year period. Comparison between subgroups was performed. Nineteen patients were included; average gestational age (GA) was 29.4 weeks. No significant change was noted in rScO2 and cFTOE after extubation in the whole population. GA and germinal matrix hemorrhage (GMH)-intraventricular hemorrhage (IVH) showed a significant change in rScO2 and cFTOE after extubation. A significant increase in cFTOE was noted in patients with previous GMH-IVH (+0.040; p = 0.05). To conclude, extubation per se was not associated with significant change in cerebral oxygenation and perfusion. Patients with a diagnosed GMH-IVH showed an increase in cFTOE, suggesting perturbation in cerebral perfusion suggesting further understanding during this challenging phenomenon. Larger studies are required to corroborate our findings.
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Affiliation(s)
- Paolo Massirio
- Neonatal Intensive Care Unit, Maternal and Neonatal Department, IRCCS Istituto Giannina Gaslini, Genoa, Italy
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), and University of Genoa, Genoa, Italy
| | - Valentina Cardiello
- Neonatal Intensive Care Unit, Maternal and Neonatal Department, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Chiara Andreato
- Neonatal Intensive Care Unit, Maternal and Neonatal Department, IRCCS Istituto Giannina Gaslini, Genoa, Italy
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), and University of Genoa, Genoa, Italy
| | - Samuele Caruggi
- Neonatal Intensive Care Unit, Maternal and Neonatal Department, IRCCS Istituto Giannina Gaslini, Genoa, Italy
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), and University of Genoa, Genoa, Italy
| | - Marcella Battaglini
- Neonatal Intensive Care Unit, Maternal and Neonatal Department, IRCCS Istituto Giannina Gaslini, Genoa, Italy
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), and University of Genoa, Genoa, Italy
| | - Andrea Calandrino
- Neonatal Intensive Care Unit, Maternal and Neonatal Department, IRCCS Istituto Giannina Gaslini, Genoa, Italy
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), and University of Genoa, Genoa, Italy
| | - Giulia Polleri
- Neonatal Intensive Care Unit, Maternal and Neonatal Department, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Federica Mongelli
- Neonatal Intensive Care Unit, Maternal and Neonatal Department, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Mariya Malova
- Neonatal Intensive Care Unit, Maternal and Neonatal Department, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Diego Minghetti
- Neonatal Intensive Care Unit, Maternal and Neonatal Department, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Alessandro Parodi
- Neonatal Intensive Care Unit, Maternal and Neonatal Department, IRCCS Istituto Giannina Gaslini, Genoa, Italy
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), and University of Genoa, Genoa, Italy
| | - Maria Grazia Calevo
- Epidemiology and Biostatistic Unit, Scientific Direction, and IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Domenico Tortora
- Neuroradiology Unit, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Andrea Rossi
- Neuroradiology Unit, IRCCS Istituto Giannina Gaslini, Genoa, Italy
- Department of Health Sciences (DISSAL), University of Genoa, Genoa, Italy
| | - Luca Antonio Ramenghi
- Neonatal Intensive Care Unit, Maternal and Neonatal Department, IRCCS Istituto Giannina Gaslini, Genoa, Italy
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), and University of Genoa, Genoa, Italy
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Venckunas T, Satas A, Brazaitis M, Eimantas N, Sipaviciene S, Kamandulis S. Near-InfraRed Spectroscopy Provides a Reproducible Estimate of Muscle Aerobic Capacity, but Not Whole-Body Aerobic Power. Sensors (Basel) 2024; 24:2277. [PMID: 38610488 PMCID: PMC11014184 DOI: 10.3390/s24072277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 03/21/2024] [Accepted: 03/30/2024] [Indexed: 04/14/2024]
Abstract
Near-infrared spectroscopy (NIRS) during repeated limb occlusions is a noninvasive tool for assessing muscle oxidative capacity. However, the method's reliability and validity remain under investigation. This study aimed to determine the reliability of the NIRS-derived mitochondrial power of the musculus vastus lateralis and its correlation with whole-body (cycling) aerobic power (V̇O2 peak). Eleven healthy active men (28 ± 10 y) twice (2 days apart) underwent repeated arterial occlusions to induce changes in muscle oxygen delivery after 15 s of electrical muscle stimulation. The muscle oxygen consumption (mV̇O2) recovery time and rate (k) constants were calculated from the NIRS O2Hb signal. We assessed the reliability (coefficient of variation and intraclass coefficient of correlation [ICC]) and equivalency (t-test) between visits. The results showed high reproducibility for the mV̇O2 recovery time constant (ICC = 0.859) and moderate reproducibility for the k value (ICC = 0.674), with no significant differences between visits (p > 0.05). NIRS-derived k did not correlate with the V̇O2 peak relative to body mass (r = 0.441, p = 0.17) or the absolute V̇O2 peak (r = 0.366, p = 0.26). In conclusion, NIRS provides a reproducible estimate of muscle mitochondrial power, which, however, was not correlated with whole-body aerobic capacity in the current study, suggesting that even if somewhat overlapping, not the same set of factors underpin these distinct indices of aerobic capacity at the different (peripheral and whole-body systemic) levels.
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Affiliation(s)
- Tomas Venckunas
- Institute of Sport Science and Innovations, Lithuanian Sports University, 44221 Kaunas, Lithuania
| | - Andrius Satas
- Institute of Sport Science and Innovations, Lithuanian Sports University, 44221 Kaunas, Lithuania
| | - Marius Brazaitis
- Institute of Sport Science and Innovations, Lithuanian Sports University, 44221 Kaunas, Lithuania
| | - Nerijus Eimantas
- Institute of Sport Science and Innovations, Lithuanian Sports University, 44221 Kaunas, Lithuania
| | - Saule Sipaviciene
- Department of Health Promotion and Rehabilitation, Lithuanian Sports University, 44221 Kaunas, Lithuania
| | - Sigitas Kamandulis
- Institute of Sport Science and Innovations, Lithuanian Sports University, 44221 Kaunas, Lithuania
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Strozzi C, Di Battista C, Graziosi A, D'Adamo E, Librandi M, Patacchiola R, Maconi A, Ghiglione V, Pelazzo C, Pasino M, Paterlini G, Bozzetti V, Salvo V, Gazzolo F, Concolino D, Abella L, Spinelli M, Betti M, Bertolotti M, Gazzolo D. Cerebral and systemic near infrared spectroscopy patterns in preterm infants treated by caffeine. Acta Paediatr 2024; 113:700-708. [PMID: 38156367 DOI: 10.1111/apa.17077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 11/22/2023] [Accepted: 12/14/2023] [Indexed: 12/30/2023]
Abstract
AIM To investigate the effects of caffeine loading/maintenance administration on near-infrared spectroscopy cerebral, kidney and splanchnic patterns in preterm infants. METHODS We conducted a multicentre case-control prospective study in 40 preterm infants (gestational age 29 ± 2 weeks) where each case acted as its own control. A caffeine loading dose of 20 mg/kg and a maintenance dose of 5 mg/kg after 24 h were administered intravenously. Near infrared spectroscopy monitoring parameters were monitored 30 min before, 30 min during and 180 min after caffeine therapy administration. RESULTS A significant increase (p < 0.05) in splanchnic regional oxygenation and tissue function and a decrease (p < 0.05) in cerebral tissue function after loading dose was shown. A preferential hemodynamic redistribution from cerebral to splanchnic bloodstream was also observed. After caffeine maintenance dose regional oxygenation did not change in the monitored districts, while tissue function increased in kidney and splanchnic bloodstream. CONCLUSION Different caffeine administration modalities affect cerebral/systemic oxygenation status, tissue function and hemodynamic pattern in preterm infants. Future studies correlating near infrared spectroscopy parameters and caffeine therapy are needed to determine the short/long-term effect of caffeine in preterm infants.
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Affiliation(s)
- Chiara Strozzi
- Neonatal Intensive Care Unit, ASO SS Antonio, Biagio, C. Arrigo, Alessandria, Italy
| | | | | | - Ebe D'Adamo
- Neonatal Intensive Care Unit, G. d'Annunzio University, Chieti, Italy
| | - Michela Librandi
- Department of Pediatrics, G. d'Annunzio University, Chieti, Italy
| | | | - Antonio Maconi
- Neonatal Intensive Care Unit, ASO SS Antonio, Biagio, C. Arrigo, Alessandria, Italy
| | - Valeria Ghiglione
- Neonatal Intensive Care Unit, ASO SS Antonio, Biagio, C. Arrigo, Alessandria, Italy
| | - Claudia Pelazzo
- Neonatal Intensive Care Unit, ASO SS Antonio, Biagio, C. Arrigo, Alessandria, Italy
| | - Marta Pasino
- Neonatal Intensive Care Unit, ASO SS Antonio, Biagio, C. Arrigo, Alessandria, Italy
| | - Giuseppe Paterlini
- Neonatal Intensive Care Unit, Fondazione IRCCS San Gerardo dei Tintori, Monza, Monza-Brianza, Italy
| | - Valentina Bozzetti
- Neonatal Intensive Care Unit, Fondazione IRCCS San Gerardo dei Tintori, Monza, Monza-Brianza, Italy
| | - Vincenzo Salvo
- Neonatal Intensive Care Unit, Department of Human Pathology in Adult and Developmental Age "Gaetano Barresi", University of Messina, Messina, Italy
| | - Francesca Gazzolo
- Pediatric Unit, Department of Medical and Surgical Sciences, Magna Graecia University, Catanzaro, Italy
| | - Daniela Concolino
- Pediatric Unit, Department of Medical and Surgical Sciences, Magna Graecia University, Catanzaro, Italy
| | | | - Martina Spinelli
- Department of Science and Technological Innovation, Piemonte Orientale University, Alessandria, Italy
| | - Marta Betti
- Integrated Activities Research Innovation Department, ASO SS Antonio, Biagio, C. Arrigo, Alessandria, Italy
| | - Marinella Bertolotti
- Integrated Activities Research Innovation Department, ASO SS Antonio, Biagio, C. Arrigo, Alessandria, Italy
| | - Diego Gazzolo
- Neonatal Intensive Care Unit, G. d'Annunzio University, Chieti, Italy
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Awhangbo L, Severac M, Charnier C, Latrille E, Steyer JP. Rapid characterization of sulfur and phosphorus in organic waste by near infrared spectroscopy. Waste Manag 2024; 176:11-19. [PMID: 38246073 DOI: 10.1016/j.wasman.2023.12.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Revised: 12/14/2023] [Accepted: 12/30/2023] [Indexed: 01/23/2024]
Abstract
Near-infrared spectroscopy (NIRS) has recently emerged as a valuable tool for monitoring organic waste utilized in anaerobic digestion processes. Over the past decade, NIRS has significantly improved the characterization of organic waste by enabling the prediction of several crucial parameters such as biochemical methane potential, carbohydrate, lipid and nitrogen contents, Chemical Oxygen Demand, and kinetic parameters. This study investigates the application of NIRS for predicting the levels of Sulfur (S) and Phosphorus (P) within organic waste materials. The results for sulfur prediction exhibited a high level of accuracy, yielding an error of 1.21 g/Kg[TS] in an independently validated dataset, coupled with an R-squared value of 0.84. Conversely, the prediction of phosphorus proved to be slightly less successful, showing an error of 1.49 g/Kg[TS] with an R-squared value of 0.70. Furthermore, the disparities in performance seem to stem from the inherent correlation between the spectral data and the sulfur or phosphorus contents. Significantly, a variable selection technique known as CovSel was employed, shedding light on the differing approaches used for sulfur and phosphorus predictions. In the case of sulfur, the prediction was achieved through a direct correlation with wavelengths associated with sulfur-related functional groups (such as R - S(=O)2 - OH, -SH, and R-S-S-R) present in the NIR spectra. In contrast, phosphorus prediction relied on an indirect correlation with absorption bands related to organic matter (including CH, CH2, CH3, -CHO, R-OH, C = O, -CO2H, and CONH).
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Affiliation(s)
- L Awhangbo
- INRAE, Univ Montpellier, LBE, F-11100, Narbonne, France; ChemHouse Research Group, F-34000, Montpellier, France.
| | - M Severac
- SUEZ, Centre International de Recherche Sur l'Eau et l'Environnement (CIRSEE), 78230, Le Pecq, France
| | - C Charnier
- Bioentech, 13 Avenue Albert Einstein F-69000, France
| | - E Latrille
- INRAE, Univ Montpellier, LBE, F-11100, Narbonne, France; ChemHouse Research Group, F-34000, Montpellier, France
| | - J P Steyer
- INRAE, Univ Montpellier, LBE, F-11100, Narbonne, France
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Mutoh N, Moriya M, Xu C, Kato K, Arai S, Iwabuchi N, Tanaka M, Jinghua Y, Itamura R, Sakatani K, Warisawa S. Bifidobacterium breve M-16V regulates the autonomic nervous system via the intestinal environment: A double-blind, placebo-controlled study. Behav Brain Res 2024; 460:114820. [PMID: 38128887 DOI: 10.1016/j.bbr.2023.114820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 12/11/2023] [Accepted: 12/17/2023] [Indexed: 12/23/2023]
Abstract
We conducted a randomized controlled trial to investigate the potential of Bifidobacterium breve M-16 V to improve mood in humans. In this evaluation, we incorporated the use of near-infrared spectroscopy (NIRS), which has been used to evaluate mood states in studies with small sample sizes. Participants were given B. breve M-16 V (20 billion cells/day) for 6 weeks, and their mood state was assessed before and after ingestion. NIRS data were collected at rest and during a mental arithmetic task (under stress). Intake of B. breve M-16 V decreased the heart rate under stress and increased levels of the GABA-like substance pipecolic acid in stool samples. In addition, B. breve M-16 V improved mood and sleep scores in participants with high anxiety levels. These results suggest that B. breve M-16 V affects the metabolites of the gut microbiota and has the potential to modulate the autonomic nervous system and to improve mood and sleep.
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Affiliation(s)
- Natsumi Mutoh
- Innovative Research Institute, Morinaga Milk Industry Co., Ltd., 1-83, 5-Chome, Higashihara, Zama-city, Kanagawa 252-8583, Japan
| | - Masamichi Moriya
- Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-city, Chiba 277-8563, Japan
| | - Chendong Xu
- Innovative Research Institute, Morinaga Milk Industry Co., Ltd., 1-83, 5-Chome, Higashihara, Zama-city, Kanagawa 252-8583, Japan
| | - Kumiko Kato
- Innovative Research Institute, Morinaga Milk Industry Co., Ltd., 1-83, 5-Chome, Higashihara, Zama-city, Kanagawa 252-8583, Japan
| | - Satoshi Arai
- Innovative Research Institute, Morinaga Milk Industry Co., Ltd., 1-83, 5-Chome, Higashihara, Zama-city, Kanagawa 252-8583, Japan
| | - Noriyuki Iwabuchi
- Innovative Research Institute, Morinaga Milk Industry Co., Ltd., 1-83, 5-Chome, Higashihara, Zama-city, Kanagawa 252-8583, Japan.
| | - Miyuki Tanaka
- Innovative Research Institute, Morinaga Milk Industry Co., Ltd., 1-83, 5-Chome, Higashihara, Zama-city, Kanagawa 252-8583, Japan
| | - Yin Jinghua
- Mishuku Hospital, 5-33-12 Kamimeguro, Meguro-ku, Tokyo 153-0051, Japan
| | - Ronko Itamura
- Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-city, Chiba 277-8563, Japan
| | - Kaoru Sakatani
- Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-city, Chiba 277-8563, Japan
| | - Shinichi Warisawa
- Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-city, Chiba 277-8563, Japan
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Marin T, Moore J. Understanding Near-Infrared Spectroscopy: An Update. Crit Care Nurs Clin North Am 2024; 36:41-50. [PMID: 38296375 DOI: 10.1016/j.cnc.2023.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
Near-infrared spectroscopy (NIRS) is a novel technology that uses infrared light to noninvasively and continuously measure regional oxygen extraction in real time at the bedside. Neonatal research using this device supports its use as an adjunct to routine cardiovascular monitoring because NIRS serves as a surrogate marker for end-organ perfusion and can detect minute changes in cerebral, intestinal, and kidney tissue beds. Multiple conditions affecting premature infants are frequently associated with hypoperfusion; therefore, methods to detect early tissue-specific perfusion alterations may substantially improve the clinician's ability to intervene and prevent further deterioration.
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Affiliation(s)
- Terri Marin
- Department of Nursing Science, Augusta University, College of Nursing, 1120 15th Street, EC-4350, Augusta, GA 30912, USA.
| | - James Moore
- Department of Pediatrics, Division of Neonatology, University of Connecticut School of Medicine, 10 Columbus Boulevard, Hartford, CT 06106, USA
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Ataş İ, Ersunan G, Bỉlỉr Ö, Yavaşỉ Ö, Altuntaş M, Karakullukçu S. The utility of NIRS in follow-up of patients with acute ischaemic stroke treated with IV thrombolysis and mechanical thrombectomy in the emergency department. J Thromb Thrombolysis 2024; 57:466-472. [PMID: 38085469 DOI: 10.1007/s11239-023-02920-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/30/2023] [Indexed: 03/26/2024]
Abstract
Revascularization treatments (IV thrombolysis, mechanical thrombectomy) related to ischemic stroke have developed in recent years. With devices such as NIRS, non-invasive monitoring of treatment efficacy is provided. In this study, we aimed to use near-infrared spectroscopy (NIRS) as an objective monitoring method to see the effect of intravenous (IV) thrombolysis or mechanical thrombectomy treatments applied for cerebral oxygenation in patients with acute ischemic stroke. This study was carried out as a prospective study involving patients admitted to the emergency department in the years 2021-2022. NIRS measured regional oxygen saturation (rSO2) of both hemispheres of the brain before IV thrombolysis treatment, during the treatment at 0. min, 15. min, 30. min, 45. min, 60. min, after the treatment, and before and after the mechanical thrombectomy procedure. The significance level of the change in rSO2 values measured by NIRS was examined. 80 patients were included in the study. IV thrombolysis was applied to 58 patients, mechanical thrombectomy was applied to 5 of them, and both treatments were applied to 17 of them. In patients receiving IV thrombolysis, a significant difference was found in the affected hemisphere between the NIRS values measured at 0.min-15.min, 0.min-30.min, 0.min-45.min, 0.min-60.min, 0.min-post-treatment, 15.min-60.min (p < 0.001). In the patients included in the study, there was a strong and significant negative correlation between the deltaNIHSS value and the deltaNIRS values in the affected hemisphere (r=- 0.307, p = 0.013). There was a significant increase in the NIRS measurement values during and after the IV thrombolysis treatment in the affected hemisphere in the group with clinical improvement (p < 0.001). It is thought that IV thrombolysis or mechanical thrombectomy treatment applied to patients admitted to the emergency department with acute ischemic stroke can be followed objectively by NIRS.
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Affiliation(s)
- İsmail Ataş
- Department of Emergency Medicine, Rize State Hospital, 53100, Rize, Turkey.
| | - Gökhan Ersunan
- Department of Emergency Medicine, Recep Tayyip Erdoğan University Training and Research Hospital, 53020, Rize, Turkey
| | - Özlem Bỉlỉr
- Department of Emergency Medicine, Recep Tayyip Erdoğan University Training and Research Hospital, 53020, Rize, Turkey
| | - Özcan Yavaşỉ
- Department of Emergency Medicine, Recep Tayyip Erdoğan University Training and Research Hospital, 53020, Rize, Turkey
| | - Mehmet Altuntaş
- Department of Emergency Medicine, Recep Tayyip Erdoğan University Training and Research Hospital, 53020, Rize, Turkey
| | - Serdar Karakullukçu
- Department of Public Health, Karadeniz Technical University, 61080, Trabzon, Turkey
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Rasica L, Inglis EC, Mazzolari R, Iannetta D, Murias JM. Methodological considerations on near-infrared spectroscopy derived muscle oxidative capacity. Eur J Appl Physiol 2024:10.1007/s00421-024-05421-6. [PMID: 38400931 DOI: 10.1007/s00421-024-05421-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 01/15/2024] [Indexed: 02/26/2024]
Abstract
PURPOSE Different strategies for near-infrared spectroscopy (NIRS)-derived muscle oxidative capacity assessment have been reported. This study compared and evaluated (I) approaches for averaging trials; (II) NIRS signals and blood volume correction equations; (III) the assessment of vastus lateralis (VL) and tibialis anterior (TA) muscles in two fitness levels groups. METHODS Thirty-six participants [18 chronically trained (CT: 14 males, 4 females) and 18 untrained (UT: 10 males, 8 females)] participated in this study. Two trials of twenty transient arterial occlusions were performed for NIRS-derived muscle oxidative capacity assessment. Muscle oxygen consumption ([Formula: see text]O2m) was estimated from deoxygenated hemoglobin (HHb), corrected for blood volume changes following Ryan (HHbR) and Beever (HHbB) equations, and from oxygen saturation (StO2) in VL and TA. RESULTS Superimposing or averaging [Formula: see text]O2m or averaging the rate constants (k) from the two trials resulted in equivalent k values [two one-sided tests (TOST) procedure with 5% equivalence margin-P < 0.001]. Whereas HHbR (2.35 ± 0.61 min-1) and HHbB (2.34 ± 0.58 min-1) derived k were equivalent (P < 0.001), StO2 derived k (2.81 ± 0.92 min-1) was greater (P < 0.001) than both. k values were greater in CT vs UT in both muscles (VL: + 0.68 min-1, P = 0.002; TA: + 0.43 min-1, P = 0.01). CONCLUSION Different approaches for averaging trials lead to similar k. HHb and StO2 signals provided different k, although different blood volume corrections did not impact k. Group differences in k were detected in both muscles.
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Affiliation(s)
- Letizia Rasica
- Faculty of Kinesiology, University of Calgary, Calgary, Canada
| | | | - Raffaele Mazzolari
- Department of Sport Science, University of Innsbruck, Innsbruck, Austria
| | - Danilo Iannetta
- Faculty of Kinesiology, University of Calgary, Calgary, Canada
| | - Juan M Murias
- Faculty of Kinesiology, University of Calgary, Calgary, Canada.
- College of Health and Life Sciences, Hamad Bin Khalifa University, Doha, Qatar.
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Lang SS, Kumar NK, Rahman R, Tucker A, Flanders TM, Heuer GG, Storm PB, Zhao C, Huh JW. Near-infrared spectroscopy monitoring in severe pediatric abusive head trauma. J Neurosurg Pediatr 2024:1-7. [PMID: 38394651 DOI: 10.3171/2023.11.peds23439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Accepted: 11/28/2023] [Indexed: 02/25/2024]
Abstract
OBJECTIVE Abusive head trauma (AHT) is one of the most devastating forms of pediatric traumatic brain injury (TBI). It commonly presents with seizures, which may contribute to poor neurological outcome following trauma. Noninvasive near-infrared spectroscopy (NIRS) neuromonitoring may provide information on cerebral oxygenation and perfusion. In this study, the authors evaluated whether NIRS regional cerebral oxygen saturation (rSO2) values were associated with seizure activity confirmed by electroencephalography (EEG) and whether NIRS neuromonitoring could aid in seizure detection in patients with severe AHT. METHODS The authors retrospectively analyzed pediatric patients aged ≤ 18 years who were admitted to a quaternary urban pediatric hospital from 2016 to 2022 with severe AHT, who received NIRS and EEG monitoring during their hospital course. They evaluated clinical presentation and hospital course, including imaging findings, EEG findings, and NIRS rSO2 values. RESULTS Nineteen patients with severe AHT were monitored with both EEG and NIRS. The median age was 3.4 months, and 14 patients experienced seizures confirmed by EEG. On average, rSO2 values before, during, and after seizure did not differ significantly. However, within individual patients, bilateral regional NIRS rSO2 (bilateral forehead region) was seen to rise in the hour preceding seizure activity and during periods of frequent seizure activity, confirmed by EEG in the bilateral frontal-midline brain regions. CONCLUSIONS To the best of the authors' knowledge, this is the largest study to analyze NIRS and seizures confirmed by EEG in the severe AHT population. The relationship between NIRS values and seizures in this series of pediatric patients with severe AHT suggests that, overall, regional NIRS cannot predict early seizures. However, increased cerebral oxygenation preceding seizure activity and during seizure activity may be detected by regional NIRS in certain patients with local seizure activity. Future studies with larger sample sizes may help elucidate the relationship between seizures and cerebral oxygenation in different regions in severe pediatric AHT.
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Affiliation(s)
- Shih-Shan Lang
- 1Division of Neurosurgery, Children's Hospital of Philadelphia, Pennsylvania
- 2Department of Neurosurgery, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Nankee K Kumar
- 1Division of Neurosurgery, Children's Hospital of Philadelphia, Pennsylvania
| | - Raphia Rahman
- 1Division of Neurosurgery, Children's Hospital of Philadelphia, Pennsylvania
- 3Rowan University School of Osteopathic Medicine, Stratford, New Jersey; and
| | - Alexander Tucker
- 1Division of Neurosurgery, Children's Hospital of Philadelphia, Pennsylvania
- 2Department of Neurosurgery, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Tracy M Flanders
- 1Division of Neurosurgery, Children's Hospital of Philadelphia, Pennsylvania
- 2Department of Neurosurgery, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Gregory G Heuer
- 1Division of Neurosurgery, Children's Hospital of Philadelphia, Pennsylvania
- 2Department of Neurosurgery, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Phillip B Storm
- 1Division of Neurosurgery, Children's Hospital of Philadelphia, Pennsylvania
- 2Department of Neurosurgery, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Chao Zhao
- 1Division of Neurosurgery, Children's Hospital of Philadelphia, Pennsylvania
| | - Jimmy W Huh
- 4Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
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11
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Gidado IM, Nwokoye II, Triantis IF, Qassem M, Kyriacou PA. Multi-Modal Spectroscopic Assessment of Skin Hydration. Sensors (Basel) 2024; 24:1419. [PMID: 38474955 DOI: 10.3390/s24051419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 02/14/2024] [Accepted: 02/16/2024] [Indexed: 03/14/2024]
Abstract
Human skin acts as a protective barrier, preserving bodily functions and regulating water loss. Disruption to the skin barrier can lead to skin conditions and diseases, emphasizing the need for skin hydration monitoring. The gold-standard sensing method for assessing skin hydration is the Corneometer, monitoring the skin's electrical properties. It relies on measuring capacitance and has the advantage of precisely detecting a wide range of hydration levels within the skin's superficial layer. However, measurement errors due to its front end requiring contact with the skin, combined with the bipolar configuration of the electrodes used and discrepancies due to variations in various interfering analytes, often result in significant inaccuracy and a need to perform measurements under controlled conditions. To overcome these issues, we explore the merits of a different approach to sensing electrical properties, namely, a tetrapolar bioimpedance sensing approach, with the merits of a novel optical sensing modality. Tetrapolar bioimpedance allows for the elimination of bipolar measurement errors, and optical spectroscopy allows for the identification of skin water absorption peaks at wavelengths of 970 nm and 1450 nm. Employing both electrical and optical sensing modalities through a multimodal approach enhances skin hydration measurement sensitivity and validity. This layered approach may be particularly beneficial for minimising errors, providing a more robust and comprehensive tool for skin hydration assessment. An ex vivo desorption experiment was carried out on fresh porcine skin, and an in vivo indicative case study was conducted utilising the developed optical and bioimpedance sensing devices. Expected outcomes were expressed from both techniques, with an increase in the output of the optical sensor voltage and a decrease in bioimpedance as skin hydration decreased. MLR models were employed, and the results presented strong correlations (R-squared = 0.996 and p-value = 6.45 × 10-21), with an enhanced outcome for hydration parameters when both modalities were combined as opposed to independently, highlighting the advantage of the multimodal sensing approach for skin hydration assessment.
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Affiliation(s)
- Iman M Gidado
- Research Centre for Biomedical Engineering, University of London, London EC1V 0HB, UK
| | - Ifeabunike I Nwokoye
- Research Centre for Biomedical Engineering, University of London, London EC1V 0HB, UK
| | - Iasonas F Triantis
- Research Centre for Biomedical Engineering, University of London, London EC1V 0HB, UK
| | - Meha Qassem
- Research Centre for Biomedical Engineering, University of London, London EC1V 0HB, UK
| | - Panicos A Kyriacou
- Research Centre for Biomedical Engineering, University of London, London EC1V 0HB, UK
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12
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Zufry H, Munawar AA. Near-Infrared Spectroscopy for Distinguishing Malignancy in Thyroid Nodules. Appl Spectrosc 2024:37028241232440. [PMID: 38373401 DOI: 10.1177/00037028241232440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/21/2024]
Abstract
Thyroid nodules are common clinical entities, with a significant proportion being malignant. Early, accurate, and non-invasive tools to differentiate benign and malignant nodules can optimize patient management and reduce unnecessary surgery. This study aimed to evaluate the efficacy and accuracy of near-infrared spectroscopy (NIRS) in distinguishing benign from malignant thyroid nodules. A diffuse reflectance spectrum for a total of 20 thyroid nodule samples (10 samples as colloid goiter and 10 samples as thyroid cancer), were acquired in the wavelength range from 1000 to 2500 nm. Spectral data from NIRS were analyzed by means of principal component analysis (PCA), quadratic discriminant analysis (QDA), and linear discriminant analysis (LDA) to classify and differentiate thyroid nodule samples. The present study found that NIRS effectively distinguished colloid goiter and thyroid cancer using the first two principal components (PCs), explaining 90% and 10% of the variance, respectively. QDA discrimination plot displayed a clear separation between colloid goiter and thyroid cancer with minimal overlap, aligning with reported 95% accuracy. Additionally, applying LDA to seven PCs from PCA achieved a 100% accuracy rate in classifying colloid goiter and thyroid cancer from near-infrared spectral data. In conclusion, NIRS offers a promising, non-invasive complementing diagnostic tool for differentiating benign from malignant thyroid nodules with high accuracy. Future work should integrate these results into predictive model development, emphasizing external validation, alternative performance metrics, and protecting against potential overfitting translation of a machine learning model to a clinical setting.
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Affiliation(s)
- Hendra Zufry
- Division of Endocrinology, Metabolism, and Diabetes-Thyroid Center, Department of Internal Medicine, School of Medicine, Universitas Syiah Kuala/Dr Zainoel Abidin Hospita, Banda Aceh, Indonesia
- Innovation and Research Center of Endocrinology, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Agus Arip Munawar
- Department of Agricultural Engineering, Universitas Syiah Kuala, Banda Aceh, Indonesia
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13
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Usher A, Babraj J. Use of NIRS to explore skeletal muscle oxygenation during different training sessions in professional boxing. Eur J Appl Physiol 2024; 124:595-606. [PMID: 37656280 PMCID: PMC10858063 DOI: 10.1007/s00421-023-05305-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 08/25/2023] [Indexed: 09/02/2023]
Abstract
PURPOSE The physiological examination of boxing has been limited to systemic response in amateur athletes. The demands of professional boxing have been overlooked, despite the different competition format. We sought to determine the physiological demands placed on skeletal muscle in professional boxing. METHODS Ten male professional boxers (age 26 ± 5 years, height 177 ± 4 cm, weight 71 ± 6 kg) were recruited for this observational study. On different days, the athletes completed 6 × 3 min rounds of pad, bag or spar-based training with 1 min recovery between each round. Prior to each session, participants put on a heart rate monitor and near-infrared spectroscopy attached to the belly of the rectus femoris muscle to record heart rate and muscle oxygenation. RESULTS There were significantly less punches thrown in sparring compared to other training modalities (p < 0.001). Skeletal muscle oxygenation across training modalities consisted of a delay, fast desaturation and steady state. Across rounds there was a significant increase in time delay for desaturation (p = 0.016), rate of fast desaturation (p < 0.001) and duration of fast desaturation (p = 0.019). There was a significant difference in sparring for the heart rate where skeletal muscle oxygenation changes occurred compared to pads or bag sessions (p < 0.001). CONCLUSION The findings highlight differences in the skeletal muscle response to the different training modalities. Practitioners need to be aware of the muscular demands of each session to allow optimal adaptation across a training camp. Training needs to allow the skeletal muscle to achieve a new oxygenation steady state rapidly to promote efficient performance across rounds.
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Affiliation(s)
- Andrew Usher
- Department of Sport and Exercise Science, Abertay University, Bell St, Dundee, DD1 1HG, Scotland.
| | - John Babraj
- Department of Sport and Exercise Science, Abertay University, Bell St, Dundee, DD1 1HG, Scotland
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14
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Reinpõld K, Rannama I, Port K. Agreement between Ventilatory Thresholds and Bilaterally Measured Vastus Lateralis Muscle Oxygen Saturation Breakpoints in Trained Cyclists: Effects of Age and Performance. Sports (Basel) 2024; 12:40. [PMID: 38393260 PMCID: PMC10892087 DOI: 10.3390/sports12020040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 01/21/2024] [Accepted: 01/25/2024] [Indexed: 02/25/2024] Open
Abstract
This study focused on comparing metabolic thresholds derived from local muscle oxygen saturation (SmO2) signals, obtained using near-infrared spectroscopy (NIRS), with global pulmonary ventilation rates measured at the mouth. It was conducted among various Age Groups within a well-trained cyclist population. Additionally, the study examined how cycling performance characteristics impact the discrepancies between ventilatory thresholds (VTs) and SmO2 breakpoints (BPs). METHODS Junior (n = 18) and Senior (n = 15) cyclists underwent incremental cycling tests to assess their aerobic performance and to determine aerobic (AeT) and anaerobic (AnT) threshold characteristics through pulmonary gas exchange and changes in linearity of the vastus lateralis (VL) muscle SmO2 signals. We compared the relative power (Pkg) at ventilatory thresholds (VTs) and breakpoints (BPs) for the nondominant (ND), dominant (DO), and bilaterally averaged (Avr) SmO2 during the agreement analysis. Additionally, a 30 s sprint test was performed to estimate anaerobic performance capabilities and to assess the cyclists' phenotype, defined as the ratio of P@VT2 to the highest 5 s sprint power. RESULTS The Pkg@BP for Avr SmO2 had higher agreement with VT values than ND and DO. Avr SmO2 Pkg@BP1 was lower (p < 0.05) than Pkg@VT1 (mean bias: 0.12 ± 0.29 W/kg; Limits of Agreement (LOA): -0.45 to 0.68 W/kg; R2 = 0.72) and mainly among Seniors (0.21 ± 0.22 W/kg; LOA: -0.22 to 0.63 W/kg); there was no difference (p > 0.05) between Avr Pkg@BP2 and Pkg@VT2 (0.03 ± 0.22 W/kg; LOA: -0.40 to 0.45 W/kg; R2 = 0.86). The bias between two methods correlated significantly with the phenotype (r = -0.385 and r = -0.515 for AeT and AnT, respectively). CONCLUSIONS Two breakpoints can be defined in the NIRS-captured SmO2 signal of VL, but the agreement between the two methods at the individual level was too low for interchangeable usage of those methods in the practical training process. Older cyclists generally exhibited earlier thresholds in muscle oxygenation signals compared to systemic responses, unlike younger cyclists who showed greater variability and no significant differences in this regard in bias values between the two threshold evaluation methods with no significant difference between methods. More sprinter-type cyclists tended to have systemic VT thresholds earlier than local NIRS-derived thresholds than athletes with relatively higher aerobic abilities.
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Affiliation(s)
- Karmen Reinpõld
- School of Natural Sciences and Health, University of Tallinn, 10120 Tallinn, Estonia; (I.R.); (K.P.)
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15
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Maliszewski K, Feldmann A, McCully KK, Julian R. A systematic review of the relationship between muscle oxygen dynamics and energy rich phosphates. Can NIRS help? BMC Sports Sci Med Rehabil 2024; 16:25. [PMID: 38245757 PMCID: PMC10799478 DOI: 10.1186/s13102-024-00809-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 01/05/2024] [Indexed: 01/22/2024]
Abstract
BACKGROUND Phosphocreatine dynamics provide the gold standard evaluation of in-vivo mitochondrial function and is tightly coupled with oxygen availability. Low mitochondrial oxidative capacity has been associated with health issues and low exercise performance. METHODS To evaluate the relationship between near-infrared spectroscopy-based muscle oxygen dynamics and magnetic resonance spectroscopy-based energy-rich phosphates, a systematic review of the literature related to muscle oxygen dynamics and energy-rich phosphates was conducted. PRISMA guidelines were followed to perform a comprehensive and systematic search of four databases on 02-11-2021 (PubMed, MEDLINE, Scopus and Web of Science). Beforehand pre-registration with the Open Science Framework was performed. Studies had to include healthy humans aged 18-55, measures related to NIRS-based muscle oxygen measures in combination with energy-rich phosphates. Exclusion criteria were clinical populations, laboratory animals, acutely injured subjects, data that only assessed oxygen dynamics or energy-rich phosphates, or grey literature. The Effective Public Health Practice Project Quality Assessment Tool was used to assess methodological quality, and data extraction was presented in a table. RESULTS Out of 1483 records, 28 were eligible. All included studies were rated moderate. The studies suggest muscle oxygen dynamics could indicate energy-rich phosphates under appropriate protocol settings. CONCLUSION Arterial occlusion and exercise intensity might be important factors to control if NIRS application should be used to examine energetics. However, more research needs to be conducted without arterial occlusion and with high-intensity exercises to support the applicability of NIRS and provide an agreement level in the concurrent course of muscle oxygen kinetics and muscle energetics. TRIAL REGISTRATION https://osf.io/py32n/ . KEY POINTS 1. NIRS derived measures of muscle oxygenation agree with gold-standard measures of high energy phosphates when assessed in an appropriate protocol setting. 2. At rest when applying the AO protocol, in the absence of muscle activity, an initial disjunction between the NIRS signal and high energy phosphates can been seen, suggesting a cascading relationship. 3. During exercise and recovery a disruption of oxygen delivery is required to provide the appropriate setting for evaluation through either an AO protocol or high intensity contractions.
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Affiliation(s)
- Kevin Maliszewski
- Department of Neuromotor Behavior and Exercise, Institute of Sport and Exercise Sciences, University of Münster, Münster, 48149, Germany
| | - Andri Feldmann
- Institute of Sport Science, University of Bern, Bern, Switzerland
| | - Kevin K McCully
- Department of Kinesiology, University of Georgia, Athens, USA
| | - Ross Julian
- Department of Neuromotor Behavior and Exercise, Institute of Sport and Exercise Sciences, University of Münster, Münster, 48149, Germany.
- School of Sport and Exercise, University of Gloucestershire, Cheltenham, England.
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16
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Roger K, Vannasing P, Tremblay J, Bringas Vega ML, Bryce CP, Rabinowitz A, Valdes-Sosa PA, Galler JR, Gallagher A. Early childhood malnutrition impairs adult resting brain function using near-infrared spectroscopy. Front Hum Neurosci 2024; 17:1287488. [PMID: 38298205 PMCID: PMC10827877 DOI: 10.3389/fnhum.2023.1287488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 12/15/2023] [Indexed: 02/02/2024] Open
Abstract
Introduction Early childhood malnutrition affects 200+ million children under 5 years of age worldwide and is associated with persistent cognitive, behavioral and psychiatric impairments in adulthood. However, very few studies have investigated the long-term effects of childhood protein-energy malnutrition (PEM) on brain function using a functional hemodynamic brain imaging technique. Objective and methods This study aims to investigate functional brain network alterations using near infrared spectroscopy (NIRS) in adults, aged 45-51 years, from the Barbados Nutrition Study (BNS) who suffered from a single episode of malnutrition restricted to their first year of life (n = 26) and controls (n = 29). A total of 55 individuals from the BNS cohort underwent NIRS recording at rest. Results and discussion Using functional connectivity and permutation analysis, we found patterns of increased Pearson's correlation with a specific vulnerability of the frontal cortex in the PEM group (ps < 0.05). Using a graph theoretical approach, mixed ANCOVAs showed increased segregation (ps = 0.0303 and 0.0441) and decreased integration (p = 0.0498) in previously malnourished participants compared to healthy controls. These results can be interpreted as a compensatory mechanism to preserve cognitive functions, that could also be related to premature or pathological brain aging. To our knowledge, this study is the first NIRS neuroimaging study revealing brain function alterations in middle adulthood following early childhood malnutrition limited to the first year of life.
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Affiliation(s)
- Kassandra Roger
- LION Lab, Sainte-Justine University Hospital Research Center, University of Montreal, Montreal, QC, Canada
| | - Phetsamone Vannasing
- LION Lab, Sainte-Justine University Hospital Research Center, University of Montreal, Montreal, QC, Canada
| | - Julie Tremblay
- LION Lab, Sainte-Justine University Hospital Research Center, University of Montreal, Montreal, QC, Canada
| | - Maria L. Bringas Vega
- MOE Key Lab for Neuroinformation, The Clinical Hospital of Chengdu Brain Science Institute, University of Electronic Science and Technology of China, Chengdu, China
| | | | - Arielle Rabinowitz
- Montreal Neurological Institute, McGill University, Montreal, QC, Canada
| | - Pedro Antonio Valdes-Sosa
- MOE Key Lab for Neuroinformation, The Clinical Hospital of Chengdu Brain Science Institute, University of Electronic Science and Technology of China, Chengdu, China
| | - Janina R. Galler
- Division of Pediatric Gastroenterology and Nutrition, MassGeneral Hospital for Children, Boston, MA, United States
| | - Anne Gallagher
- LION Lab, Sainte-Justine University Hospital Research Center, University of Montreal, Montreal, QC, Canada
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Saliba I, Hardy A, Wang W, Vialle R, Feruglio S. A Review of Chronic Lateral Ankle Instability and Emerging Alternative Outcome Monitoring Tools in Patients following Ankle Ligament Reconstruction Surgery. J Clin Med 2024; 13:442. [PMID: 38256576 PMCID: PMC10816882 DOI: 10.3390/jcm13020442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 12/31/2023] [Accepted: 01/11/2024] [Indexed: 01/24/2024] Open
Abstract
Ankle sprains are exceedingly common injuries in both athletes and the general population. They account for 10 to 30% of all sports injuries. Although the vast majority of lateral ankle ligament injuries respond successfully to conservative management, the absolute number of those that progress to chronic lateral ankle instability (CLAI) remains considerably important. This condition is characterized by persistent symptoms and may be associated with short-term and long-term complications and functional deficits. There is still a lack of ideal postoperative management of CLAI patients. Furthermore, an evidence-based rehabilitation phasing does not exist and most of the published studies regarding this subject suggest some protocols based on a wide variety of functional assessment scores and other modalities that are not accurate enough. Moreover, the literature that assesses the ability to return to work (RTW) and return to sport (RTS) in the general population and athletes operated for CLAI most commonly shows aggregated results with global rates of RTW or RTS without describing a detailed timeline based on the readiness of patients to return to each level of activity. Although stress radiographs and MRI have been assessed as potential tools to improve postoperative management of CLAI patients, the first modality is limited by its low sensitivity to detect laxity and the second one by its static character and its inability to predict neither the healing process phase nor the mechanical properties of the repaired/reconstructed ligaments. Bioelectrical impedance, mechanical impedance and near-infrared spectroscopy are non-invasive methods of measurement that could be potential assessment tools to help surgeons improve the postoperative management of patients after CLAI surgery.
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Affiliation(s)
- Ibrahim Saliba
- LIP6 Department, Sorbonne Université, 75005 Paris, France
| | | | - Wenzheng Wang
- LIP6 Department, Sorbonne Université, 75005 Paris, France
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Ferreira TN, Santos LMB, Valladares V, Flanley CM, McDowell MA, Garcia GA, Mello-Silva CC, Maciel-de-Freitas R, Genta FA. Age, sex, and mating status discrimination in the sand fly Lutzomyia longipalpis using near infra-red spectroscopy ( NIRS). Parasit Vectors 2024; 17:19. [PMID: 38217054 PMCID: PMC10787389 DOI: 10.1186/s13071-023-06097-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 12/13/2023] [Indexed: 01/14/2024] Open
Abstract
BACKGROUND Understanding aspects related to the physiology and capacity of vectors is essential for effectively controlling vector-borne diseases. The sand fly Lutzomyia longipalpis has great importance in medical entomology for disseminating Leishmania parasites, the causative agent of Leishmaniasis, one of the main neglected diseases listed by the World Health Organization (WHO). In this respect, it is necessary to evaluate the transmission potential of this species and the success of vector control interventions. Near-infrared spectroscopy (NIRS) has been used to estimate the age of mosquitoes in different conditions (laboratory, semi-field, and conservation), taxonomic analysis, and infection detection. However, no studies are using NIRS for sand flies. METHODS In this study, we developed analytic models to estimate the age of L. longipalpis adults under laboratory conditions, identify their copulation state, and evaluate their gonotrophic cycle and diet. RESULTS Sand flies were classified with an accuracy of 58-82% in 3 age groups and 82-92% when separating them into young (<8 days) or old (>8 days) insects. The classification between mated and non-mated sandflies was 98-100% accurate, while the percentage of hits of females that had already passed the first gonotrophic cycle was only 59%. CONCLUSIONS We consider the age and copula estimation results very promising, as they provide essential aspects of vector capacity assessment, which can be obtained quickly and at a lower cost with NIRS.
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Affiliation(s)
- Tainá Neves Ferreira
- Laboratório de Bioquímica e Fisiologia de Insetos, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil
| | - Lilha M B Santos
- Laboratório de Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil
| | - Vanessa Valladares
- Malacology Laboratory, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil
| | - Catherine M Flanley
- Department of Biological Sciences, Eck Institute for Global Health, University of Notre Dame, Notre Dame, IN, USA
| | - Mary Ann McDowell
- Department of Biological Sciences, Eck Institute for Global Health, University of Notre Dame, Notre Dame, IN, USA
| | - Gabriela A Garcia
- Laboratório de Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil
| | | | - Rafael Maciel-de-Freitas
- Laboratório de Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil
- Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular, Rio de Janeiro, Brazil
| | - Fernando Ariel Genta
- Laboratório de Bioquímica e Fisiologia de Insetos, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil.
- Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular, Rio de Janeiro, Brazil.
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Machfer A, Tagougui S, Fekih N, Ben Haj Hassen H, Amor HIH, Bouzid MA, Chtourou H. Muscle oxygen supply impairment during maximal exercise in patients undergoing dialysis therapy. Respir Physiol Neurobiol 2024; 319:104169. [PMID: 37813323 DOI: 10.1016/j.resp.2023.104169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 10/01/2023] [Accepted: 10/06/2023] [Indexed: 10/11/2023]
Abstract
This study aimed to investigate whether Chronic Kidney Disease (CKD) influences O2 supply including O2 delivery and release to the active muscles during maximal physical exercise. Twelve CKD patients undergoing dialysis therapy (HD group) and twelve healthy adults (CTR group) performed an incremental exercise test to determine maximal oxygen uptake (VO2peak). Throughout the exercise, near-infrared spectroscopy allowed the investigation of changes in oxyhemoglobin (∆O2Hb), deoxyhemoglobin (∆HHb), and total hemoglobin (∆THb) in the vastus lateralis muscle. VO2peak was significantly lower in HD group. In addition, HD patients had impaired changes in muscular oxygenation (∆HHb and ∆O2Hb) and blood volume (∆THb) during the exercise (p < 0.05). Moreover, a positive correlation was observed between VO2peak and muscle blood volume (∆THb) in both groups (p < 0.05). This study provides the first evidence that HD patients displayed lower VO2peak and blunted muscular deoxyhemoglobin increase during exercise. This result supports the hypothesis of an increase in oxygen affinity and/or mitochondrial dysfunction in this population.
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Affiliation(s)
- Amal Machfer
- Research Laboratory: Education, Motricité, Sport et Santé, EM2S, LR19JS01, High Institute of Sport and Physical Education, University of Sfax, Tunisia
| | - Sémah Tagougui
- Université de Lille, Université d'Artois, Université du Littoral Côte d'Opale, ULR 7369 - URePSSS - Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS), Lille, France; Montreal Clinical Research Institute (IRCM), Montreal, Canada
| | - Nadia Fekih
- Research Laboratory: Education, Motricité, Sport et Santé, EM2S, LR19JS01, High Institute of Sport and Physical Education, University of Sfax, Tunisia
| | - Hayfa Ben Haj Hassen
- Research Laboratory: Education, Motricité, Sport et Santé, EM2S, LR19JS01, High Institute of Sport and Physical Education, University of Sfax, Tunisia
| | | | - Mohamed Amine Bouzid
- Research Laboratory: Education, Motricité, Sport et Santé, EM2S, LR19JS01, High Institute of Sport and Physical Education, University of Sfax, Tunisia.
| | - Hamdi Chtourou
- Activité Physique, Sport et Santé, UR18JS01, Observatoire National du Sport, 1003 Tunis, Tunisia
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Bass RD, Phillips J, Sánchez JS, Shah P, Sum S, Waksman R, Garcia-Garcia HM. The Ability of Near-Infrared Spectroscopy to Identify Vulnerable Patients and Plaques: A Systematic Review and Meta-Analysis. Heart Fail Clin 2024; 20:101-112. [PMID: 37953017 DOI: 10.1016/j.hfc.2023.06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2023]
Abstract
Previous studies have analyzed the efficacy of near-infrared spectroscopy-derived lipid core burden index (LCBI) in quantifying and identifying high-risk plaques and patients at increased risk of future major adverse cardiac outcomes/major adverse cardiovascular and cerebrovascular events. A maxLCBI4mm of 400 or greater seems to be an effective threshold for classifying at-risk plaques. This meta-analysis provides a more precise odds ratio with a narrow standard deviation that can be used to guide future studies.
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Affiliation(s)
- Ronald D Bass
- School of Medicine, Georgetown University, 3800 Reservoir Road, NorthWest, Washington, DC 20007, USA
| | - Joseph Phillips
- University of Iowa Hospitals and Clinics, 200 Hawkins Drive Iowa City, IA 52242, USA
| | - Jorge Sanz Sánchez
- Hospital Universitari I Politecnic La Fe, Avinguda de Fernando Abril Martorell, no 106, 46026 València, Spain; Centro de Investigación Biomedica en Red (CIBERCV), Avenue, Monforte de Lemos, 3-5. Pabellón 11. Planta 0. 28029 Madrid, Spain
| | - Priti Shah
- InfraRedx, A Nipro Company, 28 Crosby Drive, Suite 100, Bedford, MA 01730, USA
| | - Stephen Sum
- InfraRedx, A Nipro Company, 28 Crosby Drive, Suite 100, Bedford, MA 01730, USA
| | - Ron Waksman
- Interventional Cardiology, MedStar Washington Hospital Center, 110 Irving Street, Suite 4B-1, Washington, DC, 20010, USA
| | - Hector M Garcia-Garcia
- Interventional Cardiology, MedStar Washington Hospital Center, 110 Irving Street, Suite 4B-1, Washington, DC, 20010, USA.
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21
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Bagnato G, Imbalzano E, Ioppolo C, La Rosa D, Chiappalone M, De Gaetano A, Viapiana V, Irrera N, Nassisi V, Tringali MC, Singh EB, Falcomatà N, Russo V, Neal Roberts W, Di Micco P, Versace AG. Stratification of COVID-19 Patients with Moderate-to-Severe Hypoxemic Respiratory Failure for Response to High-Flow Nasal Cannula: A Retrospective Observational Study. Medicina (Kaunas) 2023; 60:71. [PMID: 38256332 PMCID: PMC10819134 DOI: 10.3390/medicina60010071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 12/12/2023] [Accepted: 12/27/2023] [Indexed: 01/24/2024]
Abstract
Background and Objectives: In patients with COVID-19, high-flow nasal cannula (HFNC) and continuous positive airway pressure (CPAP) are widely applied as initial treatments for moderate-to-severe acute hypoxemic respiratory failure. The aim of the study was to assess which respiratory supports improve 28-day mortality and to identify a predictive index of treatment response. Materials and Methods: This is a single-center retrospective observational study including 159 consecutive adult patients with COVID-19 and moderate-to-severe hypoxemic acute respiratory failure. Results: A total of 159 patients (82 in the CPAP group and 77 in the HFNC group) were included in the study. Mortality within 28 days was significantly lower with HFNC compared to CPAP (16.8% vs. 50%), while ICU admission and tracheal intubation within 28 days were significantly higher with CPAP compared to HFNC treatment (32% vs. 13%). We identified an index for survival in HFNC by including three variables easily available at admission (LDH, age, and respiratory rate) and the PaO2/FiO2 ratio at 48 h. The index showed high discrimination for survival with an AUC of 0.88, a negative predictive value of 86%, and a positive predictive value of 95%. Conclusions: Treatment with HFNC appears to be associated with greater survival and fewer ICU admission than CPAP. LDH, respiratory rate, age, and PaO2/FiO2 at 48 h were independently associated with survival and an index based on these variables allows for the prediction of treatment success and the assessment of patient allocation to the appropriate intensity of care after 48 h. Further research is warranted to determine effects on other outcomes and to assess the performance of the index in larger cohorts.
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Affiliation(s)
- Gianluca Bagnato
- Department of Clinical and Experimental Medicine, University of Messina, 98100 Messina, Italy; (G.B.); (E.I.); (C.I.); (D.L.R.); (M.C.); (A.D.G.); (N.I.); (V.N.); (M.C.T.); (E.B.S.); (N.F.); (A.G.V.)
| | - Egidio Imbalzano
- Department of Clinical and Experimental Medicine, University of Messina, 98100 Messina, Italy; (G.B.); (E.I.); (C.I.); (D.L.R.); (M.C.); (A.D.G.); (N.I.); (V.N.); (M.C.T.); (E.B.S.); (N.F.); (A.G.V.)
| | - Carmelo Ioppolo
- Department of Clinical and Experimental Medicine, University of Messina, 98100 Messina, Italy; (G.B.); (E.I.); (C.I.); (D.L.R.); (M.C.); (A.D.G.); (N.I.); (V.N.); (M.C.T.); (E.B.S.); (N.F.); (A.G.V.)
| | - Daniela La Rosa
- Department of Clinical and Experimental Medicine, University of Messina, 98100 Messina, Italy; (G.B.); (E.I.); (C.I.); (D.L.R.); (M.C.); (A.D.G.); (N.I.); (V.N.); (M.C.T.); (E.B.S.); (N.F.); (A.G.V.)
| | - Marianna Chiappalone
- Department of Clinical and Experimental Medicine, University of Messina, 98100 Messina, Italy; (G.B.); (E.I.); (C.I.); (D.L.R.); (M.C.); (A.D.G.); (N.I.); (V.N.); (M.C.T.); (E.B.S.); (N.F.); (A.G.V.)
| | - Alberta De Gaetano
- Department of Clinical and Experimental Medicine, University of Messina, 98100 Messina, Italy; (G.B.); (E.I.); (C.I.); (D.L.R.); (M.C.); (A.D.G.); (N.I.); (V.N.); (M.C.T.); (E.B.S.); (N.F.); (A.G.V.)
| | - Valeria Viapiana
- Department of Clinical and Experimental Medicine, University of Messina, 98100 Messina, Italy; (G.B.); (E.I.); (C.I.); (D.L.R.); (M.C.); (A.D.G.); (N.I.); (V.N.); (M.C.T.); (E.B.S.); (N.F.); (A.G.V.)
| | - Natasha Irrera
- Department of Clinical and Experimental Medicine, University of Messina, 98100 Messina, Italy; (G.B.); (E.I.); (C.I.); (D.L.R.); (M.C.); (A.D.G.); (N.I.); (V.N.); (M.C.T.); (E.B.S.); (N.F.); (A.G.V.)
| | - Veronica Nassisi
- Department of Clinical and Experimental Medicine, University of Messina, 98100 Messina, Italy; (G.B.); (E.I.); (C.I.); (D.L.R.); (M.C.); (A.D.G.); (N.I.); (V.N.); (M.C.T.); (E.B.S.); (N.F.); (A.G.V.)
| | - Maria Concetta Tringali
- Department of Clinical and Experimental Medicine, University of Messina, 98100 Messina, Italy; (G.B.); (E.I.); (C.I.); (D.L.R.); (M.C.); (A.D.G.); (N.I.); (V.N.); (M.C.T.); (E.B.S.); (N.F.); (A.G.V.)
| | - Emanuele Balwinder Singh
- Department of Clinical and Experimental Medicine, University of Messina, 98100 Messina, Italy; (G.B.); (E.I.); (C.I.); (D.L.R.); (M.C.); (A.D.G.); (N.I.); (V.N.); (M.C.T.); (E.B.S.); (N.F.); (A.G.V.)
| | - Nicola Falcomatà
- Department of Clinical and Experimental Medicine, University of Messina, 98100 Messina, Italy; (G.B.); (E.I.); (C.I.); (D.L.R.); (M.C.); (A.D.G.); (N.I.); (V.N.); (M.C.T.); (E.B.S.); (N.F.); (A.G.V.)
| | - Vincenzo Russo
- Department of Medical Translational Sciences, Division of Cardiology, Monaldi Hospital, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy;
| | | | - Pierpaolo Di Micco
- Emergency Department, Rizzoli Hospital, Health Authority NA2, 80122 Napoli, Italy
| | - Antonio Giovanni Versace
- Department of Clinical and Experimental Medicine, University of Messina, 98100 Messina, Italy; (G.B.); (E.I.); (C.I.); (D.L.R.); (M.C.); (A.D.G.); (N.I.); (V.N.); (M.C.T.); (E.B.S.); (N.F.); (A.G.V.)
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22
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Funk A, Kilger E, Vlachea P, Höchter DJ. [Use of an intra-aortic balloon pump to improve cerebral oxygen saturation after resuscitation in a cardiac surgical intervention]. Anaesthesiologie 2023; 72:878-882. [PMID: 37855946 PMCID: PMC10692251 DOI: 10.1007/s00101-023-01351-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 09/06/2023] [Accepted: 09/18/2023] [Indexed: 10/20/2023]
Affiliation(s)
- Anja Funk
- Klinik für Anaesthesiologie, Klinikum der Ludwig-Maximilians-Universität München, Marchioninistr. 15, 81377, München, Deutschland.
| | - Erich Kilger
- Klinik für Anaesthesiologie, Klinikum der Ludwig-Maximilians-Universität München, Marchioninistr. 15, 81377, München, Deutschland
| | - Polyxeni Vlachea
- Klinik für Herzchirurgie, LMU Klinikum, Klinikum der Ludwig-Maximilians-Universität, Marchioninistr. 15, 81377, München, Deutschland
| | - Dominik J Höchter
- Klinik für Anaesthesiologie, Klinikum der Ludwig-Maximilians-Universität München, Marchioninistr. 15, 81377, München, Deutschland
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23
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Ramos Gonzalez M, Axler MR, Kaseman KE, Lobene AJ, Farquhar WB, Witman MA, Kirkman DL, Lennon SL. Melatonin supplementation does not alter vascular function or oxidative stress in healthy normotensive adults on a high sodium diet. Physiol Rep 2023; 11:e15896. [PMID: 38110301 PMCID: PMC10727961 DOI: 10.14814/phy2.15896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 11/03/2023] [Accepted: 11/24/2023] [Indexed: 12/20/2023] Open
Abstract
High sodium diets (HSD) can cause vascular dysfunction, in part due to increases in reactive oxygen species (ROS). Melatonin reduces ROS in healthy and clinical populations and may improve vascular function. The purpose was to determine the effect of melatonin supplementation on vascular function and ROS during 10 days of a HSD. We hypothesized that melatonin supplementation during a HSD would improve vascular function and decrease ROS levels compared to HSD alone. Twenty-seven participants (13 M/14 W, 26.7 ± 2.9 years, BMI: 23.6 ± 2.0 kg/m2 , BP: 110 ± 9/67 ± 7 mmHg) were randomized to a 10-day HSD (6900 mg sodium/d) supplemented with either 10 mg of melatonin (HSD + MEL) or a placebo (HSD + PL) daily. Brachial artery flow-mediated dilation, a measure of macrovascular function, (HSD + PL: 7.1 ± 3.8%; HSD + MEL: 6.7 ± 3.4%; p = 0.59) and tissue oxygenation index (TSI) reperfusion rate, a measure of microvascular reactivity, (HSD + PL: 0.21 ± 0.06%/s; HSD + MEL: 0.21 ± 0.08%/s; p = 0.97) and TSI area under the curve (HSD + PL: 199899 ± 10,863 a.u.; HSD + MEL: 20315 ± 11,348 a.u.; p = 0.17) were similar at the end of each condition. Neither nitroxide molarity (HSD + PL: 7.8 × 10-5 ± 4.1 × 10-5 mol/L; HSD + MEL: 8.7 × 10-5 ± 5.1 × 10-5 mol/L; p = 0.55) nor free radical number (HSD + PL: 8.0 × 1015 ± 4.4 × 1015 ; HSD + MEL: 9.0 × 1015 ± 4.9 × 1015 ; p = 0.51) were different between conditions. Melatonin supplementation did not alter vascular function or ROS levels while on a HSD in this sample of young healthy normotensive adults.
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Affiliation(s)
| | - Michael R. Axler
- Department of Kinesiology and Applied PhysiologyUniversity of DelawareNewarkDelawareUSA
| | - Kathryn E. Kaseman
- Department of Kinesiology and Applied PhysiologyUniversity of DelawareNewarkDelawareUSA
| | - Andrea J. Lobene
- Department of Kinesiology and Applied PhysiologyUniversity of DelawareNewarkDelawareUSA
| | - William B. Farquhar
- Department of Kinesiology and Applied PhysiologyUniversity of DelawareNewarkDelawareUSA
| | - Melissa A. Witman
- Department of Kinesiology and Applied PhysiologyUniversity of DelawareNewarkDelawareUSA
| | - Danielle L. Kirkman
- Department of Kinesiology and Health SciencesVirginia Commonwealth UniversityRichmondVirginiaUSA
| | - Shannon L. Lennon
- Department of Kinesiology and Applied PhysiologyUniversity of DelawareNewarkDelawareUSA
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24
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Laguna A, Pusil S, Bazán À, Zegarra-Valdivia JA, Paltrinieri AL, Piras P, Palomares I Perera C, Pardos Véglia A, Garcia-Algar O, Orlandi S. Multi-modal analysis of infant cry types characterization: Acoustics, body language and brain signals. Comput Biol Med 2023; 167:107626. [PMID: 37918262 DOI: 10.1016/j.compbiomed.2023.107626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 09/14/2023] [Accepted: 10/23/2023] [Indexed: 11/04/2023]
Abstract
BACKGROUND Infant crying is the first attempt babies use to communicate during their initial months of life. A misunderstanding of the cry message can compromise infant care and future neurodevelopmental process. METHODS An exploratory study collecting multimodal data (i.e., crying, electroencephalography (EEG), near-infrared spectroscopy (NIRS), facial expressions, and body movements) from 38 healthy full-term newborns was conducted. Cry types were defined based on different conditions (i.e., hunger, sleepiness, fussiness, need to burp, and distress). Statistical analysis, Machine Learning (ML), and Deep Learning (DL) techniques were used to identify relevant features for cry type classification and to evaluate a robust DL algorithm named Acoustic MultiStage Interpreter (AMSI). RESULTS Significant differences were found across cry types based on acoustics, EEG, NIRS, facial expressions, and body movements. Acoustics and body language were identified as the most relevant ML features to support the cause of crying. The DL AMSI algorithm achieved an accuracy rate of 92%. CONCLUSIONS This study set a precedent for cry analysis research by highlighting the complexity of newborn cry expression and strengthening the potential use of infant cry analysis as an objective, reliable, accessible, and non-invasive tool for cry interpretation, improving the infant-parent relationship and ensuring family well-being.
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Affiliation(s)
| | | | | | - Jonathan Adrián Zegarra-Valdivia
- Global Brain Health Institute, University of California, San Francisco, CA, USA; Achucarro Basque Center for Neuroscience, Leioa, Spain; Universidad Señor de Sipán, Chiclayo, Peru
| | | | | | | | | | - Oscar Garcia-Algar
- Neonatology Unit, Hospital Clínic-Maternitat, ICGON, BCNatal, 08028, Barcelona, Spain; Department de Cirurgia I Especialitats Mèdico-quirúrgiques, Universitat de Barcelona, 08036, Barcelona, Spain
| | - Silvia Orlandi
- Department of Electrical, Electronic and Information Engineering "Guglielmo Marconi"(DEI), University of Bologna, Bologna, Italy; Health Sciences and Technologies Interdepartmental Center for Industrial Research (CIRI-SDV), University of Bologna, Bologna, Italy
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25
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Parenteau F, Puglia VF, Roberts M, Comtois AS, Bergdahl A. Cranberry supplementation improves physiological markers of performance in trained runners. Phys Act Nutr 2023; 27:8-14. [PMID: 38297471 PMCID: PMC10844722 DOI: 10.20463/pan.2023.0032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 11/27/2023] [Accepted: 11/30/2023] [Indexed: 02/02/2024] Open
Abstract
PURPOSE Cranberries have the highest polyphenol and antioxidant capacity among fruits and vegetables and may protect against exercise-induced free radical production, consequently improving performance. This study aimed to investigate the effect of polyphenol-rich cranberry extract (CE) on time-trial performance and lactate response following exercise. METHODS A total of 14 trained runners were tested at i) baseline, ii) 2 h following an acute CE dose (0.7 g/kg of body mass), and iii) 4 weeks after daily supplement consumption (0.3 g/kg of body mass). At each time point, runners performed a 1500-m race followed by a 400-m race where the live vastus lateralis oxygenation changes were determined by near-infrared spectroscopy and blood lactate was measured at rest and 1 and 3 min after each trial. The Shapiro-Wilk test and repeated-measures analysis of variance were used to establish significance (P <0.05). RESULTS Cranberry supplementation over 28 d improved aerobic performance during the 1500-m time trial, whereas the acute dose had no effect. More specifically, muscle reoxygenation rates were significantly faster after 28 d compared to baseline (P = 0.04; η² = 0.29), and a trend towards slower deoxygenation rate was observed (P = 0.13; η² = 0.20). Chronic CE consumption also buffered the post-exercise lactate response for the 400-m race (P = 0.01; η² = 0.27), while no effects were seen for the longer race. CONCLUSION Our results suggest that cranberry supplementation may have ergogenic effects, as it improves physiological markers of performance during short- and long-distance running.
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Affiliation(s)
- Francis Parenteau
- Department of Health, Kinesiology and Applied Physiology, Concordia University, Montréal, QC, Canada
| | - Veronica Furno Puglia
- Department of Health, Kinesiology and Applied Physiology, Concordia University, Montréal, QC, Canada
| | - Mary Roberts
- Department of Health, Kinesiology and Applied Physiology, Concordia University, Montréal, QC, Canada
| | - Alain Steve Comtois
- Département des Sciences de l’activité physique. Université du Québec à Montréal (UQAM), Montréal, QC, Canada
| | - Andreas Bergdahl
- Department of Health, Kinesiology and Applied Physiology, Concordia University, Montréal, QC, Canada
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26
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Possamai LT, de Aguiar RA, Borszcz FK, do Nascimento Salvador PC, de Lucas RD, Turnes T. Muscle Oxidative Capacity in Vivo Is Associated With Physiological Parameters in Trained Rowers. Res Q Exerc Sport 2023; 94:1020-1027. [PMID: 36048498 DOI: 10.1080/02701367.2022.2100862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 07/03/2022] [Indexed: 06/15/2023]
Abstract
Purpose: The muscle oxygen uptake (m V ˙ O 2 ) kinetics following exercise, measured by near-infrared spectroscopy, has been used as a functional evaluation of muscle oxidative metabolism. This study aimed to determine the m V ˙ O 2 off-kinetics and verify the relationship of the recovery rate of m V ˙ O 2 (k) with time-trial performance and different aerobic parameters in trained rowers. Methods: Eleven male rowers (age: 20 ± 3 years; V ˙ O 2 m a x : 4.28 ± 0.35 L·min-1) used a rowing ergometer to perform (I) an incremental test to determine the maximal oxygen uptake (V ˙ O 2 m a x ) and peak power output (Ppeak); (II) several visits to determine maximal lactate steady state (MLSS); and (III) a 2000-m rowing ergometer performance test. Also, one test to determine m V ˙ O 2 off-kinetics of the vastus lateralis muscle using a repeated arterial occlusions protocol. Results: The m V ˙ O 2 generated a good monoexponential fit (R2 = 0.960 ± 0.030; SEE = 0.041 ± 0.018%.s-1). The k of m V ˙ O 2 (2.06 ± 0.58 min-1) was associated with relative V ˙ O 2 m a x (r = 0.79), power output at MLSS (r = 0.76), and Ppeak (r = 0.83); however, it was not related with 2000-m rowing performance (r = -0.38 to 0.52; p > .152). Conclusion: These findings suggest that although not associated with rowing performance, the m V ˙ O 2 off-kinetics determined after a submaximal isometric knee extension may be a practical and less-exhaustive approach than invasive responses and incremental tests to assess the muscle oxidative metabolism during a training program.
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27
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Fourdain S, Provost S, Tremblay J, Vannasing P, Doussau A, Caron-Desrochers L, Gaudet I, Roger K, Hüsser A, Dehaes M, Martinez-Montes E, Poirier N, Gallagher A. Functional brain connectivity after corrective cardiac surgery for critical congenital heart disease: a preliminary near-infrared spectroscopy ( NIRS) report. Child Neuropsychol 2023; 29:1088-1108. [PMID: 36718095 DOI: 10.1080/09297049.2023.2170340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Accepted: 01/13/2023] [Indexed: 02/01/2023]
Abstract
Patients with congenital heart disease (CHD) requiring cardiac surgery in infancy are at high risk for neurodevelopmental impairments. Neonatal imaging studies have reported disruptions of brain functional organization before surgery. Yet, the extent to which functional network alterations are present after cardiac repair remains unexplored. This preliminary study aimed at investigating cortical functional connectivity in 4-month-old infants with repaired CHD, using resting-state functional near-infrared spectroscopy (fNIRS). After fNIRS signal frequency decomposition, we compared values of magnitude-squared coherence as a measure of connectivity strength, between 21 infants with corrected CHD and 31 healthy controls. We identified a subset of connections with differences between groups at an uncorrected statistical level of p < .05 while controlling for sex and maternal socioeconomic status, with most of these connections showing reduced connectivity in infants with CHD. Although none of these differences reach statistical significance after FDR correction, likely due to the small sample size, moderate to large effect sizes were found for group-differences. If replicated, these results would therefore suggest preliminary evidence that alterations of brain functional connectivity are present in the months after cardiac surgery. Additional studies involving larger sample size are needed to replicate our data, and comparisons between pre- and postoperative findings would allow to further delineate alterations of functional brain connectivity in this population.
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Affiliation(s)
- Solène Fourdain
- Department of Psychology, Université de Montréal, Montreal, QC, Canada
- Sainte-Justine University Hospital Research Center, Montreal, QC, Canada
| | - Sarah Provost
- Department of Psychology, Université de Montréal, Montreal, QC, Canada
- Sainte-Justine University Hospital Research Center, Montreal, QC, Canada
| | - Julie Tremblay
- Sainte-Justine University Hospital Research Center, Montreal, QC, Canada
| | | | - Amélie Doussau
- Clinique d'investigation neurocardiaque (CINC), Sainte-Justine, Montreal University Hospital Center, Montreal, QC, Canada
| | - Laura Caron-Desrochers
- Department of Psychology, Université de Montréal, Montreal, QC, Canada
- Sainte-Justine University Hospital Research Center, Montreal, QC, Canada
| | - Isabelle Gaudet
- Department of Psychology, Université de Montréal, Montreal, QC, Canada
- Sainte-Justine University Hospital Research Center, Montreal, QC, Canada
| | - Kassandra Roger
- Department of Psychology, Université de Montréal, Montreal, QC, Canada
- Sainte-Justine University Hospital Research Center, Montreal, QC, Canada
| | - Alejandra Hüsser
- Department of Psychology, Université de Montréal, Montreal, QC, Canada
- Sainte-Justine University Hospital Research Center, Montreal, QC, Canada
| | - Mathieu Dehaes
- Sainte-Justine University Hospital Research Center, Montreal, QC, Canada
- Department of Radiology, Radio-oncology and Nuclear Medicine, Université de Montréal, Montreal, QC, Canada
| | | | - Nancy Poirier
- Clinique d'investigation neurocardiaque (CINC), Sainte-Justine, Montreal University Hospital Center, Montreal, QC, Canada
- Department of Surgery, Faculty of Medicine, Université de Montreal, Montreal, QC, Canada
| | - Anne Gallagher
- Department of Psychology, Université de Montréal, Montreal, QC, Canada
- Sainte-Justine University Hospital Research Center, Montreal, QC, Canada
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28
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Singh S, Singh J, Shrivastava NP, Verma R. Can Quantitative Electroencephalography and Functional Near-Infrared Spectroscopy be a Good Guide in Kleine-Levin Syndrome? Neurol India 2023; 71:1250-1253. [PMID: 38174469 DOI: 10.4103/0028-3886.391382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
There is scarce literature on functional neuroimaging data in Kleine-Levin syndrome. The current case report presents the electrical and metabolic status of cortical activity utilizing functional near-infrared spectroscopy (fNIRS) and quantitative electroencephalography (qEEG) before and after treatment of symptomatic phase of illness with modafinil.
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Affiliation(s)
- Swarndeep Singh
- Department of Psychiatry, Brain Mapping Lab, All India Institute of Medical Sciences (AIIMS), New Delhi, India
| | - Jawahar Singh
- Department of Psychiatry, All India Institute of Medical Sciences (AIIMS), Bathinda, Punjab, India
| | - Neha P Shrivastava
- Department of Psychiatry, Brain Mapping Lab, All India Institute of Medical Sciences (AIIMS), New Delhi, India
| | - Rohit Verma
- Department of Psychiatry, Brain Mapping Lab, All India Institute of Medical Sciences (AIIMS), New Delhi, India
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29
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Sendra-Pérez C, Priego-Quesada JI, Salvador-Palmer R, Murias JM, Encarnacion-Martinez A. Sex-related differences in profiles of muscle oxygen saturation of different muscles in trained cyclists during graded cycling exercise. J Appl Physiol (1985) 2023; 135:1092-1101. [PMID: 37732376 DOI: 10.1152/japplphysiol.00420.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 09/05/2023] [Accepted: 09/19/2023] [Indexed: 09/22/2023] Open
Abstract
Although in recent years near-infrared spectroscopy has been used in many sports to monitor muscle oxygen saturation (SmO2), there is a lack of knowledge about the sex differences in SmO2 during exercise in different muscles. Our study aimed to examine SmO2 differences in muscles between female and male cyclists, during a graded cycling test and at the first and second lactate thresholds. Twenty-five trained cyclists and triathletes (15 males: 23 ± 7 yr, 1.78 ± 0.05 m, 70.2 ± 5.3 kg, and 10 females: 22 ± 5 yr, 1.64 ± 0.06 m, 58 ± 8 kg) performed a graded cycling test on the cycle ergometer. Power output and SmO2 in five muscles (dominant vastus lateralis, tibialis anterior, gastrocnemius medial, biceps femoris, and triceps brachii) were measured. Our mixed regression models showed that the interaction between power output and sex was significant for all the muscles analyzed (P < 0.001), indicating a greater decrease in SmO2 for males as power output increased. Moreover, the statistical parametric mapping analyses showed for females higher SmO2 in the middle of the test in biceps femoris (P = 0.03), gastrocnemius medial (P = 0.02), and tibialis anterior (P = 0.04). Finally, the males presented a lower SmO2 in all muscles where the second lactate threshold occurred, with greater evidence than in the first lactate threshold. In conclusion, females have higher SmO2 in all muscles, and these differences are more noticeable during the graded cycling test, such that males seem to have a greater reliance on oxygen extraction than females for a given relative intensity of exercise.NEW & NOTEWORTHY This study investigated the profiles of muscle oxygen saturation (SmO2) during incremental exercise in females and males. Females presented higher overall SmO2 than males during moderate and heavy intensity domain exercise in all muscles including muscles that are not mainly involved in pedaling (triceps brachii), from those that are stabilizers (medial gastrocnemius, tibialis anterior, and biceps femoris), to those that are related to power output production (vastus lateralis).
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Affiliation(s)
- Carlos Sendra-Pérez
- Research Group in Sports Biomechanics (GIBD), Department of Physical Education and Sports, Universitat de València, Valencia, Spain
| | - Jose I Priego-Quesada
- Research Group in Sports Biomechanics (GIBD), Department of Physical Education and Sports, Universitat de València, Valencia, Spain
- Red Española de Investigación del Rendimiento Deportivo en Ciclismo y Mujer (REDICYM), Consejo Superior de Deportes (CSD), Madrid, Spain
- Biophysics and Medical Physics Group, Department of Physiology, Universitat de València, Valencia, Spain
| | - Rosario Salvador-Palmer
- Red Española de Investigación del Rendimiento Deportivo en Ciclismo y Mujer (REDICYM), Consejo Superior de Deportes (CSD), Madrid, Spain
- Biophysics and Medical Physics Group, Department of Physiology, Universitat de València, Valencia, Spain
| | - Juan M Murias
- College of Health and Life Sciences, Hamad Bin Khalifa University, Doha, Qatar
| | - Alberto Encarnacion-Martinez
- Research Group in Sports Biomechanics (GIBD), Department of Physical Education and Sports, Universitat de València, Valencia, Spain
- Red Española de Investigación del Rendimiento Deportivo en Ciclismo y Mujer (REDICYM), Consejo Superior de Deportes (CSD), Madrid, Spain
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Noroozi-Clever MB, Liao SM, Whitehead HV, Vesoulis ZA. Preterm Infants off Positive Pressure Respiratory Support Have a Higher Incidence of Occult Cerebral Hypoxia. J Pediatr 2023; 262:113648. [PMID: 37517651 PMCID: PMC10822026 DOI: 10.1016/j.jpeds.2023.113648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 07/21/2023] [Accepted: 07/25/2023] [Indexed: 08/01/2023]
Abstract
OBJECTIVE To use cerebral near-infrared spectroscopy (NIRS) to quantify occult cerebral hypoxia across respiratory support modes in preterm infants. STUDY DESIGN In this prospective, longitudinal, observational study, infants ≤32 weeks gestation underwent serial pulse oximetry (oxygen saturation [SpO2]) and cerebral NIRS monitoring (4-6 hours per session) following a standardized recording schedule (daily for 2 weeks, every other day for 2 weeks, then weekly until 35 weeks corrected gestational age). Four calculations were made: median cerebral saturation, median cerebral hypoxia burden (proportion of NIRS samples below the hypoxia threshold [<67%]), median systemic saturation, and median systemic hypoxia burden (proportion of SpO2 samples below the desaturation threshold [<85%]). During each recording session, respiratory support mode was noted (room air, low-flow nasal cannula, high-flow nasal cannula, noninvasive positive pressure ventilation, continuous positive airway pressure, and invasive ventilation). RESULTS There were 1013 recording sessions made from 174 infants with a median length of 6.9 hours. Although the systemic (SpO2) hypoxia burden was significantly greater for infants on the highest respiratory support (invasive and noninvasive positive pressure ventilation), the cerebral hypoxia burden was significantly greater during recording sessions made on the lowest respiratory support (8% for room air; 29% for low-flow nasal cannula). CONCLUSIONS Premature infants on the highest levels of respiratory support have less cerebral hypoxia than those on lower respiratory support. These results raise concern about unrecognized cerebral hypoxia during lower acuity periods of neonatal intensive care unit hospitalization and adverse outcomes.
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Affiliation(s)
- Mona B Noroozi-Clever
- Division of Newborn Medicine, Edward Mallinckrodt Department of Pediatrics, Washington University in St. Louis School of Medicine, St. Louis, MO
| | - Steve M Liao
- Division of Newborn Medicine, Edward Mallinckrodt Department of Pediatrics, Washington University in St. Louis School of Medicine, St. Louis, MO
| | - Halana V Whitehead
- Division of Newborn Medicine, Edward Mallinckrodt Department of Pediatrics, Washington University in St. Louis School of Medicine, St. Louis, MO
| | - Zachary A Vesoulis
- Division of Newborn Medicine, Edward Mallinckrodt Department of Pediatrics, Washington University in St. Louis School of Medicine, St. Louis, MO.
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Kara N, Arman D, Seymen Z, Eratlı G, Gül A, Cömert S. The effects of mydriatic eye drops on cerebral blood flow and oxygenation in retinopathy of prematurity examinations. Eur J Pediatr 2023; 182:4939-4947. [PMID: 37606703 DOI: 10.1007/s00431-023-05161-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 08/09/2023] [Accepted: 08/11/2023] [Indexed: 08/23/2023]
Abstract
Mydriatic eye drops used during retinopathy examination have been associated with cardiovascular, respiratory, and gastrointestinal side effects. The aim of our study was to investigate the effects of the drops used for pupil dilatation on cerebral blood flow and cerebral oxygenation. The study included 62 infants who underwent retinopathy screening exams. Vital signs, heart rate (HR), arterial oxygen saturation (SpO2), and mean arterial pressure (MAP) were recorded. Cerebral oxygenation and middle cerebral artery blood flow velocity were evaluated using near-infrared spectroscopy (NIRS) and Doppler ultrasonography, respectively, and the cerebral metabolic rate of oxygen (CMRO2) was also calculated. The mean gestational age of the infants included was 31.29 ± 1.42 weeks, and the mean birth weight was 1620 ± 265 g. Heart rate was found to be significantly decreased after mydriatic eye drop instillation; however, there were no significant differences regarding blood pressure and oxygen saturation levels (HR: p < 0.001; MAP: p = 0.851; SpO2: p = 0.986, respectively). After instillation while cerebral regional oxygen saturation (rScO2) measurements were significantly decreased at the 60th minute (p = 0.01), no significant difference was found in Vmax and Vmean of MCA before and after mydriatic eye drop instillation (p = 0.755, p = 0.515, respectively). Regarding CMRO2 measurements, we also did not find any statistical difference (p = 0.442). Conclusion: Our study has shown that although eye drops may affect heart rate and regional cerebral oxygen saturation, they do not alter cerebral blood flow velocities and metabolic rate of oxygen consumption. Current recommendations for mydriatic eye drop use in retinopathy exam appear to be safe. What is Known: • Mydriatic eye drop installation is recommended for pupil dilatation during ROP screening exams. • It's known that mydriatics used in ROP examination have affects on the vital signs, cerebral oxygenation and blood flow. What is New: • This is the first study evaluating the changes in cerebral oxygenation and blood flow velocity after mydriatic drop instillation using NIRS and Doppler US concomitantly. • While the eye drops may affect heart rate and regional cerebral oxygen saturation, they do not alter cerebral blood flow velocities and metabolic rate of oxygen consumption.
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Affiliation(s)
- Nursu Kara
- Division of Neonatology, Department of Pediatrics, Istanbul Research and Training Hospital, University of Health Sciences, Istanbul, Turkey.
| | - Didem Arman
- Division of Neonatology, Department of Pediatrics, Istanbul Research and Training Hospital, University of Health Sciences, Istanbul, Turkey
| | - Zeynep Seymen
- Department of Ophthalmology, Istanbul Research and Training Hospital, University of Health Sciences, Istanbul, Turkey
| | - Gökçen Eratlı
- Department of Ophthalmology, Istanbul Research and Training Hospital, University of Health Sciences, Istanbul, Turkey
| | - Adem Gül
- Division of Neonatology, Department of Pediatrics, Istanbul Research and Training Hospital, University of Health Sciences, Istanbul, Turkey
| | - Serdar Cömert
- Division of Neonatology, Department of Pediatrics, Istanbul Research and Training Hospital, University of Health Sciences, Istanbul, Turkey
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Pomp L, Jeneson JAL, van der Pol WL, Bartels B. Electrophysiological and Imaging Biomarkers to Evaluate Exercise Training in Patients with Neuromuscular Disease: A Systematic Review. J Clin Med 2023; 12:6834. [PMID: 37959299 PMCID: PMC10647337 DOI: 10.3390/jcm12216834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 10/13/2023] [Accepted: 10/18/2023] [Indexed: 11/15/2023] Open
Abstract
Exercise therapy as part of the clinical management of patients with neuromuscular diseases (NMDs) is complicated by the limited insights into its efficacy. There is an urgent need for sensitive and non-invasive quantitative muscle biomarkers to monitor the effects of exercise training. Therefore, the objective of this systematic review was to critically appraise and summarize the current evidence for the sensitivity of quantitative, non-invasive biomarkers, based on imaging and electrophysiological techniques, for measuring the effects of physical exercise training. We identified a wide variety of biomarkers, including imaging techniques, i.e., magnetic resonance imaging (MRI) and ultrasound, surface electromyography (sEMG), magnetic resonance spectroscopy (MRS), and near-infrared spectroscopy (NIRS). Imaging biomarkers, such as muscle maximum area and muscle thickness, and EMG biomarkers, such as compound muscle action potential (CMAP) amplitude, detected significant changes in muscle morphology and neural adaptations following resistance training. MRS and NIRS biomarkers, such as initial phosphocreatine recovery rate (V), mitochondrial capacity (Qmax), adenosine phosphate recovery half-time (ADP t1/2), and micromolar changes in deoxygenated hemoglobin and myoglobin concentrations (Δ[deoxy(Hb + Mb)]), detected significant adaptations in oxidative metabolism after endurance training. We also identified biomarkers whose clinical relevance has not yet been assessed due to lack of sufficient study.
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Affiliation(s)
- Lisa Pomp
- Child Development and Exercise Center, Wilhelmina Children’s Hospital, University Medical Center Utrecht, 3584 CX Utrecht, The Netherlands
| | - Jeroen Antonius Lodewijk Jeneson
- Child Development and Exercise Center, Wilhelmina Children’s Hospital, University Medical Center Utrecht, 3584 CX Utrecht, The Netherlands
| | - W. Ludo van der Pol
- Department of Neurology, Brain Center Rudolf Magnus, University Medical Center Utrecht, 3584 CX Utrecht, The Netherlands
| | - Bart Bartels
- Child Development and Exercise Center, Wilhelmina Children’s Hospital, University Medical Center Utrecht, 3584 CX Utrecht, The Netherlands
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Bielitzki R, Behrendt T, Nguyen T, Behrens M, Malczewski V, Franz A, Schega L. Influence of cuff stiffness on hemodynamics and perceived cuff pressure in the upper extremities in males and females: implications for practical blood flow restriction training. BMC Sports Sci Med Rehabil 2023; 15:134. [PMID: 37858237 PMCID: PMC10585869 DOI: 10.1186/s13102-023-00745-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 10/03/2023] [Indexed: 10/21/2023]
Abstract
BACKGROUND Practical blood flow restriction (pBFR) during exercise is a cost-saving alternative to traditional blood flow restriction using pneumatic cuffs, particularly when exercising in a group setting. Depending on the pBFR technique, several factors (e.g., cuff width, limb circumference) have already been shown to be of importance when applying the pBFR pressure. Given that elastic cuffs are often used for pBFR, the cuff stiffness might be an additional influencing factor. Therefore, the present study compared the acute effects of three elastic cuffs with identical width but different stiffness (high stiffness (HS), medium stiffness (MS), and low stiffness (LS)) on hemodynamic measures and perceived cuff pressure at rest. METHODS In a randomized, counter-balanced cross-over study, 36 young and normotensive participants completed three experimental trials. After a 10-min rest period in supine position, the cuff was loosely and proximally applied to the right upper arm. Following baseline data recording, the cuff was successively tightened in 10%-increments with respect to the limb circumference (%overlap) until arterial blood flow was occluded. At baseline and during each %overlap, systolic peak blood flow velocity of the brachial artery, rating of perceived cuff pressure, as well as muscle oxygen saturation and total hemoglobin concentration of the biceps brachii muscle were recorded. RESULTS The %overlap required to occlude arterial blood flow was different between the three cuffs (HS: 30.9 ± 3.8%, MS: 43.9 ± 6.1%, LS: 54.5 ± 8.3%). Furthermore, at 30% overlap, systolic peak blood flow velocity was lower when applying the HS (9.0 ± 10.9 cm∙s- 1) compared to MS (48.9 ± 21.9 cm∙s- 1) and LS cuff (62.9 ± 19.1 cm∙s- 1). Rating of perceived cuff pressure at 30% overlap was higher when using the HS (6.5 ± 1.5 arbitrary unit (a.u.)) compared to MS (5.1 ± 1.4 a.u.) and LS cuff (4.9 ± 1.5 a.u.) with no difference between the MS and LS cuff. However, muscle oxygen saturation and total hemoglobin concentration were not different between the three cuffs. CONCLUSIONS The present study revealed that the cuff stiffness influenced blood flow velocity and arterial occlusion pressure. Therefore, cuff stiffness seems an important factor for the application of pBFR.
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Affiliation(s)
- Robert Bielitzki
- Department of Sport Science, Institute III, Otto-von-Guericke University Magdeburg, 39104 Magdeburg, Germany
| | - Tom Behrendt
- Department of Sport Science, Institute III, Otto-von-Guericke University Magdeburg, 39104 Magdeburg, Germany
| | - Toan Nguyen
- Department of Sport Science, Institute III, Otto-von-Guericke University Magdeburg, 39104 Magdeburg, Germany
| | - Martin Behrens
- University of Applied Sciences for Sport and Management Potsdam, Olympischer Weg 7, 14471 Potsdam, Germany
| | - Victoria Malczewski
- Department of Sport Science, Institute III, Otto-von-Guericke University Magdeburg, 39104 Magdeburg, Germany
| | - Alexander Franz
- Department of Orthopedics and Trauma Surgery, University Hospital Bonn, 53127 Bonn, Germany
| | - Lutz Schega
- Department of Sport Science, Institute III, Otto-von-Guericke University Magdeburg, 39104 Magdeburg, Germany
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Landolfo F, Giliberti P, De Rose DU, Pugnaloni F, Santisi A, Columbo C, Martini L, Ronchetti MP, Di Chiara L, Toscano A, Gandolfo C, Dotta A, Capolupo I. Use of levosimendan in hemodynamic management of heart failure in two neonates with intracranial arteriovenous shunts: a case series. Ital J Pediatr 2023; 49:141. [PMID: 37840126 PMCID: PMC10577993 DOI: 10.1186/s13052-023-01537-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 09/21/2023] [Indexed: 10/17/2023] Open
Abstract
BACKGROUND The hemodynamic status of newborns with intracranial arteriovenous shunts (AVSs) may be extremely complex. Mini-invasive hemodynamic monitoring through innovative techniques such as Near-Infrared Spectroscopy (NIRS) and Pressure Recording Analytical Method (PRAM) may help in understanding hemodynamics in newborns with AVSs. Levosimendan is a calcium sensitizer and inodilator, and it is known to improve ventricular function, but its use in newborns is limited. In our cases, we evaluated the effect of levosimendan on hemodynamics through NIRS and PRAM. CASE PRESENTATION Herein, we report the cases of two neonates with intracranial arteriovenous shunts, in whom we used levosimendan to manage cardiac failure refractory to conventional treatment. Levosimendan was used at a dosage of 0.1 mcg/kg/min for 72 h. Combined use of NIRS and PRAM helped in real-time monitoring of hemodynamic effects; in particular, levosimendan determined significant improvement in myocardium contractility as well as a reduction of heart rate. CONCLUSION In two neonatal cases of AVSs, levosimendan led to an overall hemodynamic stabilization, documented by the combination of NIRS and PRAM. Our results suggest introducing levosimendan as a second-line treatment in cases of severe cardiac dysfunction due to AVSs without improvement using standard treatment strategies. Future prospective and larger studies are highly warranted.
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Affiliation(s)
- Francesca Landolfo
- Neonatal Intensive Care Unit, "Bambino Gesù" Children's Hospital IRCCS, Rome, 00165, Italy
| | - Paola Giliberti
- Neonatal Intensive Care Unit, "Bambino Gesù" Children's Hospital IRCCS, Rome, 00165, Italy
| | | | - Flaminia Pugnaloni
- Neonatal Intensive Care Unit, "Bambino Gesù" Children's Hospital IRCCS, Rome, 00165, Italy
| | - Alessandra Santisi
- Neonatal Intensive Care Unit, "Bambino Gesù" Children's Hospital IRCCS, Rome, 00165, Italy
| | - Claudia Columbo
- Neonatal Intensive Care Unit, "Bambino Gesù" Children's Hospital IRCCS, Rome, 00165, Italy
| | - Ludovica Martini
- Neonatal Intensive Care Unit, "Bambino Gesù" Children's Hospital IRCCS, Rome, 00165, Italy
| | - Maria Paola Ronchetti
- Neonatal Intensive Care Unit, "Bambino Gesù" Children's Hospital IRCCS, Rome, 00165, Italy
| | - Luca Di Chiara
- Pediatric Cardiac Intensive Care Unit, "Bambino Gesù" Children's Hospital IRCCS, Rome, 00165, Italy
| | - Alessandra Toscano
- Perinatal Cardiology Unit, "Bambino Gesù" Children's Hospital IRCCS, Rome, 00165, Italy
| | - Carlo Gandolfo
- Neuroradiology Unit, "Bambino Gesù" Children's Hospital IRCCS, Rome, 00165, Italy
| | - Andrea Dotta
- Neonatal Intensive Care Unit, "Bambino Gesù" Children's Hospital IRCCS, Rome, 00165, Italy
| | - Irma Capolupo
- Neonatal Intensive Care Unit, "Bambino Gesù" Children's Hospital IRCCS, Rome, 00165, Italy
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Hays SR, Rich BT, Longnecker MT, Angerer JP, Tolleson DR, Teel PD. Detection of winter tick, Dermacentor albipictus, infestations using near infrared reflectance spectroscopy of bovine feces. Vet Parasitol 2023; 323:110045. [PMID: 37813063 DOI: 10.1016/j.vetpar.2023.110045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 09/22/2023] [Accepted: 10/02/2023] [Indexed: 10/11/2023]
Abstract
The objective of this study was to determine whether artificial infestations of D. albipictus could be detected in cattle using near infrared reflectance spectroscopy of bovine feces (fNIRS) and if detection capability was sensitive to size of tick infestation and phase of on-host stage-specific tick development. Fecal samples were collected daily from six non-infested then later tick-infested Bos taurus yearling heifers who each served as their own control. Cattle with D. albipictus infestations arising from as few as 1000 larvae were identified by fecal chemistry changes using fNIRS technology. In two separate trials, three animal pairs were infested with one of three treatment levels (low: ∼ 1000, medium: ∼ 4000, and high: ∼ 8000) of D. albipictus larvae in a repeated measures experimental design. Trial 1 consisted of tick naïve cattle while Trial 2 consisted of prior tick exposed cattle. Date of drop and daily sum of engorged female ticks were tabulated to characterize each infestation. Cluster, common factor, principal component and MANOVA analyses were used to define and assess fecal spectra changes associated with experimental stages of infestation. Cluster analyses found significant differences in fecal samples for heifer pairs in each treatment level group (low, medium, and high) in Trial 1 and then in Trial 2 from two pre-infestation control periods (outside and inside), three stages of tick development (larval feeding, nymphal feeding, adult feeding), and post-tick recovery periods. Five shifts in fecal chemistry of non-infested and tick-infested periods were identified by six clusters of NIRS fecal spectra measured between 576 and 1126 nm. The PCA's resulted in 97.56% and 97.77% for Trials 1 and 2 respectively of the total variation in the 1050 frequencies being explained by the first three principal components (P1, P2, P3). Results from the MANOVA and the Wilk's Lambda test for both trials showed highly significant evidence (p-values < 0.0001) of a difference in the means of the three principal components across the six Stages. There was significant evidence in Trial 1 (p-values = 0.0067) and Trial 2 (p-values < 0.0001) of a difference between the means of the three principal components across the three levels of tick infestation. These significant pair-wise comparisons reflect developmental phases of tick attachment and blood-feeding that define periods of increasing, peak and declining stress identified in five fecal chemistry shifts defined by six fecal spectral clusters.
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Affiliation(s)
- Samantha R Hays
- Department of Entomology, Texas A&M AgriLife Research, College Station, TX 77843, USA.
| | - Brian T Rich
- Department of Entomology, Texas A&M AgriLife Research, College Station, TX 77843, USA
| | | | - Jay P Angerer
- Texas A&M AgriLife Research, Temple, TX 76502, USA; USDA Agricultural Research Service-Fort Keogh Livestock and Range Research Laboratory, Miles City, MT 59301, USA
| | - Douglas R Tolleson
- Sonora AgriLife Research Station, Texas A&M AgriLife Research, Sonora, TX, USA
| | - Pete D Teel
- Department of Entomology, Texas A&M AgriLife Research, College Station, TX 77843, USA
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Franzini S, Querciagrossa S, Brebion M, Consonni D, Blanc T, Orliaguet G. Effect of retropneumoperitoneum on cerebral and renal oxygen saturation during retroperitoneal robotic-assisted laparoscopic pyeloplasty (R-RALP) in a pediatric population: Preliminary results of a prospective observational study using a dedicated anesthetic protocol and Near-InfraRed Spectroscopy. Anaesth Crit Care Pain Med 2023; 42:101234. [PMID: 37121359 DOI: 10.1016/j.accpm.2023.101234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 04/14/2023] [Accepted: 04/15/2023] [Indexed: 05/02/2023]
Abstract
BACKGROUND Retroperitoneal robotic-assisted laparoscopic pyeloplasty (R-RALP) for ureteropelvic junction obstruction (UPJO) has gained growing acceptance among pediatric urologists, and is increasingly performed as day-case surgery, involving smaller children and infants. However, retroperitoneal CO2 insufflation may cause hemodynamic derangements, respiratory changes, and hypercapnia, whose consequences are poorly investigated. We, therefore, decided to prospectively study its effect on regional tissue perfusion and oxygenation in a cohort of pediatric patients undergoing R-RALP, using a dedicated anesthetic protocol and cerebral and renal Near InfraRed Spectroscopy (NIRS). MATERIAL AND METHODS Between January 2021 and September 2022, a cohort of 21 consecutive children [12 males (9 females), mean age of 7.1 ± 3.8 years and mean body weight of 25.7 ± 12.3 kg] underwent their first elective pyeloplasty for UPJO by R-RALP. The surgical procedure followed a previously described standardized technique and a dedicated anesthetic protocol. In conjunction with the minimal expected standard monitoring, cerebral and renal NIRS were added. Standard monitoring parameters and NIRS values were recorded at preset points throughout the procedures. RESULTS Standard monitoring and NIRS measurements during R-RALP were not adversely affected by CO2 insufflation, pending a significant increase in respiratory rate, aimed to avoid hypercapnia, while keeping the ventilation pressure within the safety range, preventing lung injury. CONCLUSIONS R-RALP, using a constant retroperitoneal CO2 insufflation pressure of 12 mmHg with a 5 L.min-1 flow, does not adversely affect respiratory and hemodynamics parameters, pending the implementation of a specifically designed anesthetic protocol aimed to prevent hypercapnia, the most threatening effect of retroperitoneal CO2 insufflation. CLINICAL TRIAL REGISTRATION NUMBER NCT03274050.
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Affiliation(s)
- Stefania Franzini
- Department of Pediatric Anesthesia and Intensive Care, Necker-Enfants Malades University Hospital, AP-HP Centre-Université Paris Cité, Paris, France.
| | - Stefania Querciagrossa
- Department of Pediatric Anesthesia and Intensive Care, Necker-Enfants Malades University Hospital, AP-HP Centre-Université Paris Cité, Paris, France
| | - Myriam Brebion
- Department of Pediatric Anesthesia and Intensive Care, Necker-Enfants Malades University Hospital, AP-HP Centre-Université Paris Cité, Paris, France
| | - Dario Consonni
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| | - Thomas Blanc
- Department of Pediatric Surgery, Necker-Enfants Malades University Hospital, AP-HP Centre-Université Paris Cité, Paris, France
| | - Gilles Orliaguet
- Department of Pediatric Anesthesia and Intensive Care, Necker-Enfants Malades University Hospital, AP-HP Centre-Université Paris Cité, Paris, France; Pharmacologie et évaluation des thérapeutiques chez l'enfant et la femme enceinte, Unité de recherche EA 7323, Hôpitaux Universitaires Paris Centre - Site Tarnier, Université Paris Cité, Paris 75006, France
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Batterson PM, Kirby BS, Hasselmann G, Feldmann A. Muscle oxygen saturation rates coincide with lactate-based exercise thresholds. Eur J Appl Physiol 2023; 123:2249-2258. [PMID: 37261552 DOI: 10.1007/s00421-023-05238-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 05/19/2023] [Indexed: 06/02/2023]
Abstract
INTRODUCTION Monitoring muscle metabolic activity via blood lactate is a useful tool for understanding the physiological response to a given exercise intensity. Recent indications suggest that skeletal muscle oxygen saturation (SmO2), an index of the balance between local O2 supply and demand, may describe and predict endurance performance outcomes. PURPOSE We tested the hypothesis that SmO2 rate is tightly related to blood lactate concentration across exercise intensities, and that deflections in SmO2 rate would coincide with established blood lactate thresholds (i.e., lactate thresholds 1 and 2). METHODS Ten elite male soccer players completed an incremental running protocol to exhaustion using 3-min work to 30 s rest intervals. Blood lactate samples were collected during rest and SmO2 was collected continuously via near-infrared spectroscopy from the right and left vastus lateralis, left biceps femoris and the left gastrocnemius. RESULTS Muscle O2 saturation rate (%/min) was quantified after the initial 60 s of each 3-min segment. The SmO2 rate was significantly correlated with blood lactate concentrations for all muscle sites; RVL, r = - 0.974; LVL, r = - 0.969; LG, r = - 0.942; LHAM, r = - 0.907. Breakpoints in SmO2 rate were not significantly different from LT1 or LT2 at any muscle sites (P > 0.05). Bland-Altman analysis showed speed threshold estimates via SmO2 rate and lactate are similar at LT2, but slightly greater for SmO2 rate at LT1. CONCLUSIONS Muscle O2 saturation rate appears to provide actionable information about maximal metabolic steady state and is consistent with bioenergetic reliance on oxygen and its involvement in the attainment of metabolic steady state.
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Affiliation(s)
- Philip M Batterson
- Biological and Population Health Sciences, Oregon State University, 17 Milam Hall, Corvallis, OR, 97331, USA.
| | - Brett S Kirby
- Nike Sport Research Lab, Nike Inc, Beaverton, OR, USA
| | | | - Andri Feldmann
- Institute of Sport Science, University of Bern, Bern, Switzerland
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Hazenberg L, Aries M, Beqiri E, Mess WH, van Mook W, Delnoij T, Zeiler FA, van Kuijk S, Tas J. Are NIRS-derived cerebral autoregulation and ABPopt values different between hemispheres in hypoxic-ischemic brain injury patients following cardiac arrest? J Clin Monit Comput 2023; 37:1427-1430. [PMID: 37195622 DOI: 10.1007/s10877-023-01008-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 04/01/2023] [Indexed: 05/18/2023]
Abstract
PURPOSE Near-infrared spectroscopy (NIRS) has been suggested as a non-invasive monitoring technique to set cerebral autoregulation (CA) guided ABP targets (ABPopt) in comatose patients with hypoxic-ischemic brain injury (HIBI) following cardiac arrest. We aimed to determine whether NIRS-derived CA and ABPopt values differ between left and right-sided recordings in these patients. METHODS Bifrontal regional oxygen saturation (rSO2) was measured using INVOS or Fore-Sight devices. The Cerebral Oximetry index (COx) was determined as a CA measure. ABPopt was calculated using a published algorithm with multi-window weighted approach. A paired Wilcoxon signed rank test and intraclass correlation coefficients (ICC) were used to compare (1) systematic differences and (2) degree of agreement between left and right-sided measurements. RESULTS Eleven patients were monitored. In one patient there was malfunctioning of the right-sided optode and in one patient not any ABPopt value was calculated. Comparison of rSO2 and COx was possible in ten patients and ABPopt in nine patients. The average recording time was 26 (IQR, 22-42) hours. The ABPopt values were not significantly different between the bifrontal recordings (80 (95%-CI 76-84) and 82 (95%-CI 75-84) mmHg) for the left and right recordings, p = 1.0). The ICC for ABPopt was high (0.95, 0.78-0.98, p < 0.001). Similar results were obtained for rSO2 and COx. CONCLUSION We found no differences between left and right-sided NIRS recordings or CA estimation in comatose and ventilated HIBI patients. This suggests that in these patients without signs of localized pathology unilateral recordings might be sufficient to estimate CA status or provide ABPopt targets.
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Affiliation(s)
- L Hazenberg
- Department of Intensive Care Medicine, Maastricht University Medical Center+, Maastricht, The Netherlands.
| | - Mjh Aries
- Department of Intensive Care Medicine, Maastricht University Medical Center+, Maastricht, The Netherlands
- School of Mental Health and Neurosciences, Maastricht University, Maastricht, The Netherlands
| | - E Beqiri
- Brain Physics Laboratory, Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - W H Mess
- Department of Clinical Neurophysiology, Maastricht University Medical Center+, Maastricht, The Netherlands
| | - Wnka van Mook
- Department of Intensive Care Medicine, Maastricht University Medical Center+, Maastricht, The Netherlands
- Academy for Postgraduate Training, Maastricht University Medical Center+, Maastricht, The Netherlands
- School of Health Professions Education, Maastricht University, Maastricht, The Netherlands
| | - T Delnoij
- Department of Intensive Care Medicine, Maastricht University Medical Center+, Maastricht, The Netherlands
- Department of Cardiology, Maastricht University Medical Center+, Maastricht, The Netherlands
| | - F A Zeiler
- Section of Neurosurgery, Department of Surgery, Rady Faculty of Health Sciences, University of Manitoba, Manitoba, Canada
- Department of Anatomy and Cell Science, Rady Faculty of Health Sciences, University of Manitoba, Manitoba, Canada
- Department of Biomedical Engineering, Price Faculty of Engineering, University of Manitoba, Manitoba, Canada
- Division of Anesthesia, Department of Medicine, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Smj van Kuijk
- Department of Clinical Epidemiology and Medical Technology Assessment, Maastricht University Medical Center+, Maastricht, The Netherlands
| | - J Tas
- Department of Intensive Care Medicine, Maastricht University Medical Center+, Maastricht, The Netherlands
- School of Mental Health and Neurosciences, Maastricht University, Maastricht, The Netherlands
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Bourdillon N, Subudhi AW, Fan JL, Evero O, Elliott JE, Lovering AT, Roach RC, Kayser B. AltitudeOmics: effects of 16 days acclimatization to hypobaric hypoxia on muscle oxygen extraction during incremental exercise. J Appl Physiol (1985) 2023; 135:823-832. [PMID: 37589059 PMCID: PMC10642515 DOI: 10.1152/japplphysiol.00100.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 07/11/2023] [Accepted: 08/03/2023] [Indexed: 08/18/2023] Open
Abstract
Acute altitude exposure lowers arterial oxygen content ([Formula: see text]) and cardiac output ([Formula: see text]) at peak exercise, whereas O2 extraction from blood to working muscles remains similar. Acclimatization normalizes [Formula: see text] but not peak [Formula: see text] nor peak oxygen consumption (V̇o2peak). To what extent acclimatization impacts muscle O2 extraction remains unresolved. Twenty-one sea-level residents performed an incremental cycling exercise to exhaustion near sea level (SL), in acute (ALT1) and chronic (ALT16) hypoxia (5,260 m). Arterial blood gases, gas exchange at the mouth and oxy- (O2Hb) and deoxyhemoglobin (HHb) of the vastus lateralis were recorded to assess arterial O2 content ([Formula: see text]), [Formula: see text], and V̇o2. The HHb-V̇o2 slope was taken as a surrogate for muscle O2 extraction. During moderate-intensity exercise, HHb-V̇o2 slope increased to a comparable extent at ALT1 (2.13 ± 0.94) and ALT16 (2.03 ± 0.88) compared with SL (1.27 ± 0.12), indicating increased O2 extraction. However, the HHb/[Formula: see text] ratio increased from SL to ALT1 and then tended to go back to SL values at ALT16. During high-intensity exercise, HHb-V̇o2 slope reached a break point beyond which it decreased at SL and ALT1, but not at ALT16. Increased muscle O2 extraction during submaximal exercise was associated with decreased [Formula: see text] in acute hypoxia. The significantly greater muscle O2 extraction during maximal exercise in chronic hypoxia is suggestive of an O2 reserve.NEW & NOTEWORTHY During incremental exercise muscle deoxyhemoglobin (HHb) and oxygen consumption (V̇o2) both increase linearly, and the slope of their relationship is an indirect index of local muscle O2 extraction. The latter was assessed at sea level, in acute and during chronic exposure to 5,260 m. The demonstrated presence of a muscle O2 extraction reserve during chronic exposure is coherent with previous studies indicating both limited muscle oxidative capacity and decrease in motor drive.
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Affiliation(s)
- Nicolas Bourdillon
- Institute of Sports Sciences, University of Lausanne, Lausanne, Switzerland
| | - Andrew W Subudhi
- Hybl Sports Medicine and Performance Center, Department of Human Physiology and Nutrition, University of Colorado, Colorado Springs, Colorado, United States
| | - Jui-Lin Fan
- Department of Physiology, Faculty of Medical & Health Sciences, Manaaki Manawa-The Centre for Heart Research, University of Auckland, Auckland, New Zealand
| | - Oghenero Evero
- Altitude Research Center, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States
| | - Jonathan E Elliott
- Department of Human Physiology, University of Oregon, Eugene, Oregon, United States
| | - Andrew T Lovering
- Department of Human Physiology, University of Oregon, Eugene, Oregon, United States
| | - Robert C Roach
- Altitude Research Center, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States
| | - Bengt Kayser
- Institute of Sports Sciences, University of Lausanne, Lausanne, Switzerland
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Dunst AK, Manunzio C, Feldmann A, Hesse C. Applications of near-infrared spectroscopy in "anaerobic" diagnostics - SmO 2 kinetics reflect PCr dephosphorylation and correlate with maximal lactate accumulation and maximal pedalling rate. Biol Sport 2023; 40:1019-1031. [PMID: 37867743 PMCID: PMC10588566 DOI: 10.5114/biolsport.2023.122481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 07/14/2022] [Accepted: 11/19/2022] [Indexed: 10/24/2023] Open
Abstract
We investigated the relationship of the time-dependent behaviour of muscle oxygen saturation SmO2(t), phosphagen energy supply WPCr(t) and blood lactate accumulation ΔBLC(t) during a 60-s all-out cycling sprint and tested SmO2(t) for correlations with the end of the fatigue-free state tFf, maximal pedalling rate PRmax and maximal blood lactate accumulation rate v̇Lamax. Nine male elite track cyclists performed four maximal sprints (3, 8, 12, 60 s) on a cycle ergometer. Crank force and cadence were monitored continuously to determine PRmax and tFf based on force-velocity profiles. SmO2 of the vastus lateralis muscle and respiratory gases were measured until the 30th minute after exercise. WPCr was calculated based on the fast component of the post-exercise oxygen uptake for each sprint. Before and for 30 minutes after each sprint, capillary blood samples were taken to determine the associated ΔBLC. Temporal changes of SmO2, WPCr and ΔBLC were analysed via non-linear regression analysis. v̇Lamax was calculated based on ΔBLC(t) as the highest blood lactate accumulation rate. All models showed excellent quality (R2 > 0.95). The time constant of SmO2(t) τSmO2 = 2.93 ± 0.65 s was correlated with the time constant of WPCr(t) τPCr = 3.23 ± 0.67 s (r = 0.790, p < 0.012), v̇Lamax = 0.95 ± 0.18 mmol · l-1 · s-1 (r = 0.768, p < 0.017) and PRmax = 299.51 ± 14.70 rpm (r = -0.670, p < 0.049). tFf was correlated with τSmO2 (r = 0.885, p < 0.001). Our results show a time-dependent reflection of SmO2 kinetics and phosphagen energy contribution during a 60-s maximal cycling sprint. A high v̇Lamax results in a reduction, a high PRmax in an increase of the desaturation rate. The half-life of SmO2 desaturation indicates the end of the fatigue-free state.
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Affiliation(s)
| | - Christian Manunzio
- University Hospital Bonn, Children’s Hospital, Department of Paediatric Cardiology, Sports Clinic, Bonn, Germany
| | - Andri Feldmann
- University of Bern, Institute of Sport Science, Bern, Switzerland
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Chen D, Zhang H, Lin L, Zhang Z, Zeng J, Chen L, Chen X. Auto-encoder design based on the 1D-VD-CNN model for the detection of honeysuckle from unknown origin. J Pharm Biomed Anal 2023; 234:115572. [PMID: 37478551 DOI: 10.1016/j.jpba.2023.115572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 06/23/2023] [Accepted: 07/10/2023] [Indexed: 07/23/2023]
Abstract
The disadvantages of the traditional one-dimensional convolution neural network (1D-CNN) model based on honeysuckle near-infrared spectral data (NIRS) include high parameter quantity, low efficiency, and inability to identify unknown categories effectively. In this paper, we propose a one-dimensional very deep convolution neural network (1D-VD-CNN) and design an auto-encoder mechanism for detecting honeysuckle from unexplored habitats. First, the 1D-VD-CNN model uses the efficient very deep (VD) structure to replace the hidden layer structure in the traditional 1D-CNN model. The model can be directly applied to analyze one-dimensional near-infrared spectral data (NIRS). Second, combining the reconstruction error of the auto-encoder, a honeysuckle identification method considering an unknown origin is designed, which can solve the problem of high confidence in convolution neural networks by using an auto-encoder and reconstruction errors of the samples to be tested. Whether the sample is an unknown variety can be determined by comparing the corrected confidence level with the preset threshold value. The results show that the accuracy of the 1D-VD-CNN training set and test set is 100%, and the loss value converges to 0.001. Compared with the traditional 1D-CNN model, the parameters and FLOPs are reduced by nearly 71% and 8%, respectively. At the same time, compared with the NIRS analysis and the PLS-DA method, the 1D-VD-CNN model has higher efficiency and better recognition performance for honeysuckle near-infrared spectral classification. Meanwhile, the accuracy rate of the auto-encoder for the category detection mechanism of honeysuckle from an unknown origin is 98%. The model can quickly and efficiently classify honeysuckle from different habitats and detect honeysuckle from unexplored habitats.
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Affiliation(s)
- Dongying Chen
- College of Electronic Information Science, Fujian Jiangxia University, Fuzhou, Fujian 350108, China; Smart Home Information Collection and Processing on Internet of Things Laboratory of Digital Fujian, Fuzhou, Fujian 350108, China
| | - Hao Zhang
- College of Electronic Information Science, Fujian Jiangxia University, Fuzhou, Fujian 350108, China; Smart Home Information Collection and Processing on Internet of Things Laboratory of Digital Fujian, Fuzhou, Fujian 350108, China.
| | - Lingyan Lin
- College of Electronic Information Science, Fujian Jiangxia University, Fuzhou, Fujian 350108, China
| | - Zilong Zhang
- College of Electronic Information Science, Fujian Jiangxia University, Fuzhou, Fujian 350108, China
| | - Jian Zeng
- College of Electrical Engineering and Automation, Fuzhou University, Fuzhou, Fujian 350108, China
| | - Lu Chen
- Institute of Agricultural Quality Standards and Testing Technology, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Xiaogang Chen
- College of Electronic Information Science, Fujian Jiangxia University, Fuzhou, Fujian 350108, China; Smart Home Information Collection and Processing on Internet of Things Laboratory of Digital Fujian, Fuzhou, Fujian 350108, China
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Laguna A, Pusil S, Acero-Pousa I, Zegarra-Valdivia JA, Paltrinieri AL, Bazán À, Piras P, Palomares i Perera C, Garcia-Algar O, Orlandi S. How can cry acoustics associate newborns' distress levels with neurophysiological and behavioral signals? Front Neurosci 2023; 17:1266873. [PMID: 37799341 PMCID: PMC10547902 DOI: 10.3389/fnins.2023.1266873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 09/07/2023] [Indexed: 10/07/2023] Open
Abstract
Introduction Even though infant crying is a common phenomenon in humans' early life, it is still a challenge for researchers to properly understand it as a reflection of complex neurophysiological functions. Our study aims to determine the association between neonatal cry acoustics with neurophysiological signals and behavioral features according to different cry distress levels of newborns. Methods Multimodal data from 25 healthy term newborns were collected simultaneously recording infant cry vocalizations, electroencephalography (EEG), near-infrared spectroscopy (NIRS) and videos of facial expressions and body movements. Statistical analysis was conducted on this dataset to identify correlations among variables during three different infant conditions (i.e., resting, cry, and distress). A Deep Learning (DL) algorithm was used to objectively and automatically evaluate the level of cry distress in infants. Results We found correlations between most of the features extracted from the signals depending on the infant's arousal state, among them: fundamental frequency (F0), brain activity (delta, theta, and alpha frequency bands), cerebral and body oxygenation, heart rate, facial tension, and body rigidity. Additionally, these associations reinforce that what is occurring at an acoustic level can be characterized by behavioral and neurophysiological patterns. Finally, the DL audio model developed was able to classify the different levels of distress achieving 93% accuracy. Conclusion Our findings strengthen the potential of crying as a biomarker evidencing the physical, emotional and health status of the infant becoming a crucial tool for caregivers and clinicians.
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Affiliation(s)
| | | | | | - Jonathan Adrián Zegarra-Valdivia
- Facultad de Medicina, Universidad Señor de Sipán, Chiclayo, Peru
- Global Brain Health Institute, University of California, San Francisco, San Francisco, CA, United States
- Achucarro Basque Center for Neuroscience, Leioa, Spain
| | - Anna Lucia Paltrinieri
- Neonatology Department, Barcelona Center for Maternal-Fetal and Neonatal Medicine (BCNatal), Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
| | | | | | - Clàudia Palomares i Perera
- Neonatology Department, Barcelona Center for Maternal-Fetal and Neonatal Medicine (BCNatal), Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
| | - Oscar Garcia-Algar
- Neonatology Department, Barcelona Center for Maternal-Fetal and Neonatal Medicine (BCNatal), Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
- Department de Cirurgia I Especialitats Mèdico-Quirúrgiques, Universitat de Barcelona, Barcelona, Spain
| | - Silvia Orlandi
- Department of Electrical, Electronic and Information Engineering “Guglielmo Marconi” (DEI), University of Bologna, Bologna, Italy
- Health Sciences and Technologies Interdepartmental Center for Industrial Research (CIRI-SDV), University of Bologna, Bologna, Italy
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Zhang H, Zhang T, Hou L, Zhao J, Fan Q, Wang L, Lu Z, Dong H, Lei C. Association of intraoperative cerebral and somatic tissue oxygen saturation with postoperative acute kidney injury in adult patients undergoing multiple valve surgery. BMC Anesthesiol 2023; 23:319. [PMID: 37726660 PMCID: PMC10507988 DOI: 10.1186/s12871-023-02279-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 09/12/2023] [Indexed: 09/21/2023] Open
Abstract
BACKGROUND The association between tissue oxygenation with postoperative acute kidney injury (AKI) in adult patients undergoing multiple valve surgery has not been specifically studied. METHODS In this prospective exploratory cohort study, 99 patients were enrolled. The left forehead, the left forearm, the left upper thigh, and the left renal region tissue oxygen saturation using near-infrared spectroscopy were monitored. The association between each threshold and AKI was assessed. The relative and absolute thresholds were < 70%, < 75%, < 80%, < 85%, < 90%, < 95%, and < 100% baseline, and baseline-standard deviation (SD), -1.5 SD, -2 SD, -2.5 SD, and -3 SD. Multivariate logistic regression analysis was adopted to explore the association. RESULTS AKI occurred in 53 (54%) patients. The absolute value-based SrrO2 thresholds associated with AKI were baseline-3 SD (odds ratio [OR], 4.629; 95% confidence interval [CI], 1.238-17.314; P = 0.023) and baseline-2.5 SD (OR, 2.842; 95% CI, 1.025-7.881; P = 0.045) after adjusting for the potential confounders, those are renal region tissue oxygen saturation of 55% and 60%, but not statistically significant after correcting for multiple testing (corrected P = 0.114 and 0.179, respectively). CONCLUSION The SrrO2 desaturation, defined as < baseline - 2.5 SD or < baseline - 3 SD, may be associated with AKI. The thresholds need to be verified in future large-scale studies. TRIAL REGISTRATIONS The study was registered at ClinicalTrials.gov, first trial registration: 26/10/2017, identifier: NCT03323203.
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Affiliation(s)
- Hui Zhang
- Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, Xi'an, 710032, China
| | - Taoyuan Zhang
- Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, Xi'an, 710032, China
| | - Lihong Hou
- Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, Xi'an, 710032, China
| | - Jing Zhao
- Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, Xi'an, 710032, China
| | - Qianqian Fan
- Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, Xi'an, 710032, China
| | - Lini Wang
- Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, Xi'an, 710032, China
| | - Zhihong Lu
- Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, Xi'an, 710032, China
| | - Hailong Dong
- Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, Xi'an, 710032, China
| | - Chong Lei
- Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, Xi'an, 710032, China.
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Kranen SH, Oliveira RS, Bond B, Williams CA, Barker AR. The utility of the reperfusion rate of tissue oxygen saturation as a measure of vascular endothelial function in adolescents: reliability, validity and sensitivity. Front Physiol 2023; 14:1163474. [PMID: 37781222 PMCID: PMC10533909 DOI: 10.3389/fphys.2023.1163474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 08/17/2023] [Indexed: 10/03/2023] Open
Abstract
Introduction: The near-infrared spectroscopy (NIRS)-derived reperfusion rate of tissue oxygen saturation (slope 2 StO2) may provide a surrogate measure of vascular function, however, this has yet to be examined in a paediatric population. This study investigated in adolescents: 1) the between-day reliability of NIRS-derived measurements; 2) the relationship between slope 2 StO2 and macro- (flow-mediated dilation, FMD) and microvascular (peak reactive hyperaemia, PRH) function; and 3) the effect of high-intensity interval exercise (HIIE) on slope 2 StO2, FMD, and PRH. Methods: Nineteen boys (13.3 ± 0.5 y) visited the laboratory on two occasions, separated by ∼ 1 week. On visit 1, participants underwent simultaneous assessment of brachial artery FMD and slope 2 StO2 and PRH on the internal face of the forearm. On visit 2, participants completed a bout of HIIE with slope 2 StO2, FMD and PRH measured pre-, immediately post- and 1.5 h post-exercise. Results: Slope 2 StO2 showed no mean bias (p = 0.18) and an intraclass correlation coefficient of 0.67 (p = 0.003) between visits. No significant correlation between slope 2 StO2 and FMD or PRH was observed on visit 1 (r = -0.04, p = 0.89 and r = -0.30, p = 0.23, respectively) or visit 2 pre-exercise (r = -0.28, p = 0.25 and r = -0.31, p = 0.20, respectively). Compared to pre-exercise, FMD decreased immediately post-exercise (p < 0.001) and then increased 1.5 h post-exercise (p < 0.001). No significant change was detected for slope 2 StO2 (p = 0.30) or PRH (p = 0.55) following HIIE. Conclusion: In adolescents, slope 2 StO2 can be measured reliably, however, it is not correlated with FMD or PRH and does not follow the acute time course of changes in FMD post-exercise. Hence, the use of slope 2 StO2 as a surrogate measure of vascular function in youth must be refuted.
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Affiliation(s)
- Sascha H. Kranen
- Children’s Health and Exercise Research Centre, Public Health and Sports Sciences, University of Exeter Medical School, Faculty of Health and Life Sciences, University of Exeter, Exeter, United Kingdom
| | - Ricardo S. Oliveira
- Children’s Health and Exercise Research Centre, Public Health and Sports Sciences, University of Exeter Medical School, Faculty of Health and Life Sciences, University of Exeter, Exeter, United Kingdom
- Department of Physical Education, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Bert Bond
- Children’s Health and Exercise Research Centre, Public Health and Sports Sciences, University of Exeter Medical School, Faculty of Health and Life Sciences, University of Exeter, Exeter, United Kingdom
| | - Craig A. Williams
- Children’s Health and Exercise Research Centre, Public Health and Sports Sciences, University of Exeter Medical School, Faculty of Health and Life Sciences, University of Exeter, Exeter, United Kingdom
| | - Alan R. Barker
- Children’s Health and Exercise Research Centre, Public Health and Sports Sciences, University of Exeter Medical School, Faculty of Health and Life Sciences, University of Exeter, Exeter, United Kingdom
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Nuwamanya E, Wembabazi E, Kanaabi M, Namakula FB, Katungisa A, Lyatumi I, Esuma W, Alamu EO, Dufour D, Kawuki R, Davrieux F. Development and validation of near-infrared spectroscopy procedures for prediction of cassava root dry matter and amylose contents in Ugandan cassava germplasm. J Sci Food Agric 2023. [PMID: 37665950 DOI: 10.1002/jsfa.12966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 07/06/2023] [Accepted: 09/05/2023] [Indexed: 09/06/2023]
Abstract
BACKGROUND Cassava utilization for food and/or industrial products depends on inherent properties of root dry matter content (DMC) and the starch fraction of amylose content (AC). Accordingly, in the present study, near-infrared reflectance spectroscopy (NIRS) models were developed to aid breeding and selection of DMC and AC as critical industrial traits taking care of root sample preparation and cassava germplasm diversity available in Uganda. RESULTS Upon undertaking calibrations and cross-validations, best models were adopted for validation. DMC in calibration samples ranged from 20 to 45 g 100g-1 , whereas, for amylose content, it ranged from 14 to 33 g 100g-1 . In the validation set, average DMC was 29.5 g 100g-1 , whereas, for amylose content, it was 24.64 g 100g-1 . For DMC, a modified partial least square regression model had regression coefficients (R2 ) of 0.98 and 0.96, respectively, in the calibration and validation set. These were also associated with low bias (-0.018) and ratio of performance deviation that ranged from 4.7 to 5.0. In addition, standard error of prediction values ranged from 0.9 g 100g-1 to 1.06 g 100g-1 . For AC, the regression coefficient was 0.91 for the calibration set and 0.94 for the validation set. A bias equivalent to -0.03 and a ratio of performance deviation of 4.23 were observed. CONCLUSION These findings confirm the robustness of NIRS in the estimation of dry matter content and amylose content in cassava roots and thus justify its use in routine cassava breeding operations. © 2023 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Ephraim Nuwamanya
- National Crops Resources Research Institute, Kampala, Uganda
- Makerere University Kampala, Kampala, Uganda
| | - Enoch Wembabazi
- National Crops Resources Research Institute, Kampala, Uganda
| | - Michael Kanaabi
- National Crops Resources Research Institute, Kampala, Uganda
- Makerere University Kampala, Kampala, Uganda
| | | | | | - Ivan Lyatumi
- National Crops Resources Research Institute, Kampala, Uganda
| | - Williams Esuma
- National Crops Resources Research Institute, Kampala, Uganda
| | | | - Dominique Dufour
- UMR Qualisud, University of Montpellier, CIRAD, Montpellier SupAgro, University of Avignon, University of La Reunion, Montpellier, France
| | - Robert Kawuki
- National Crops Resources Research Institute, Kampala, Uganda
| | - Fabrice Davrieux
- UMR Qualisud, University of Montpellier, CIRAD, Montpellier SupAgro, University of Avignon, University of La Reunion, Montpellier, France
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Pelka EZ, Davis BR, Tomko PM, McDaniel J. Analysis of electrical stimulation and voluntary muscle contraction on skeletal muscle oxygen uptake and mitochondrial recovery using near-infrared spectroscopy. Eur J Appl Physiol 2023; 123:2053-2061. [PMID: 37171642 DOI: 10.1007/s00421-023-05221-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 05/01/2023] [Indexed: 05/13/2023]
Abstract
PURPOSE This investigation was to compare differences in skeletal muscle oxygen consumption ([Formula: see text]) and mitochondrial recovery between voluntary (VOL) and electrically stimulated (ES) plantarflexion contractions. METHODS Twelve men and women (26 ± 4.0 years; 171.8 ± 5.1 cm; 74.0 ± 13.7 kg) were seated in a chair with their right knee fully extended and right foot secured to a force transducer. ES electrodes and a near-infrared spectroscopy device were placed on the gastrocnemius. Participants performed ES plantarflexion contractions across a range of stimulation intensities at frequencies of 1 and 2 Hz and similar VOL contractions. Cuff occlusion occurred immediately following each series of contractions to measure [Formula: see text]. A standardized mitochondrial function assessment protocol was also performed to calculate K-constants between work-matched ES and VOL contractions. RESULTS For mitochondrial assessments, there were no significant differences between ES and VOL rate constants (2.03 ± 0.98 vs. 1.25 ± 1.35 min-1, p = 0.266). ES resulted in a significantly greater workrate-[Formula: see text] slope at 1 Hz (0.007 ± 0.007 vs. 0.001 ± 0.002% [Formula: see text]/s/N, p = 0.014) and 2 Hz (0.010 ± 0.010 vs. 0.001 ± 0.001% [Formula: see text]/s/N, p = 0.012), as well as a significantly greater workrate-[Formula: see text] Y-intercept at 2 Hz (1.603 ± 1.513 vs. 0.556 ± 0.564% [Formula: see text]/s, p = 0.035) but not 1 Hz (0.579 ± 0.448 vs. 0.442 ± 0.357% mV̇O2/s, p = 0.535) when compared to VOL. CONCLUSION ES results in a significantly greater [Formula: see text] at similar work rates compared to VOL, however, the mitochondrial recovery rate constants were similar. The greater mVO2 with ES may partially contribute to the increased rate of fatigue during ES exercise in individuals with muscle paralysis.
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Affiliation(s)
- Edward Z Pelka
- Exercise Science and Exercise Physiology, Kent State University, OH, Kent, USA
| | - B Ryan Davis
- Exercise Science and Exercise Physiology, Kent State University, OH, Kent, USA
| | - Patrick M Tomko
- Exercise Science and Exercise Physiology, Kent State University, OH, Kent, USA
| | - John McDaniel
- Exercise Science and Exercise Physiology, Kent State University, OH, Kent, USA.
- Louis Stokes Cleveland Veterans Affairs Medical Center, Cleveland, OH, USA.
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Wirayannawat W, Amawat J, Yamsiri N, Paes B, Kitsommart R. Comparison of the SenSmart™ and the INVOS™ neonatal cerebral near-infrared spectrometry devices. Front Pediatr 2023; 11:1243977. [PMID: 37691777 PMCID: PMC10485771 DOI: 10.3389/fped.2023.1243977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 08/15/2023] [Indexed: 09/12/2023] Open
Abstract
Objectives To determine the correlation and agreement between the SenSmart™ and the INVOS™ devices of neonatal cerebral regional oxygen saturation (CrSO2) measurements using neonatal sensors. The secondary objective was to develop a regression model that predicts CrSO2-INVOS values using CrSO2-SenSmart indices and determine whether the values between the devices are interchangeable. Methods A prospective, cross-sectional study was conducted in infants during the first 4 weeks of life. Simultaneous, bilateral CrSO2 was measured using the SenSmart™X100 (CrSO2-SenSmart) or INVOS™ 5100C (CrSO2-INVOS) device in each frontoparietal area for 2 h. Five-minute CrSO2 values were extracted for analysis. Results Thirty infants were recruited with 720 pairwise measurements and 26 (84%) were evaluated in the first week of life. Mean gestational age of the preterm and term infants was [30.9 ± 2.8 (n = 14) and 38.8 ± 1.1 (n = 16)] weeks, respectively. Overall CrSO2- was 77.08 ± 9.70% and 71.45 ± 12.74% for the SenSmart and INVOS, respectively (p < 0.001). The correlation coefficient (r) between the CrSO2-SenSmart and INVOS was 0.20 (p < 0.001). The mean difference between the CrSO2-SenSmart and INVOS was 5.63 ± 13.87% with -21.6% to 32.8% limits of agreement. The r and mean difference was 0.39 (p < 0.001) and 8.87 ± 12.58% in preterm infants, and 0.06 (p = 0.27) and 2.79 ± 14.34 in term infants. Conclusion The CrSO2-SenSmart tended to read higher than the CrSO2-INVOS device. There was no correlation between the CrSO2-SenSmart and the CrSO2-INVOS in term infants and it was weak in preterms. Due to imprecise agreement, the CrSO2-SenSmart values are not interchangeable with those of the CrSO2-INVOS.
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Affiliation(s)
- Wariphan Wirayannawat
- Division of Neonatology, Department of Pediatrics, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Jutharat Amawat
- Division of Neonatology, Department of Pediatrics, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Nattaya Yamsiri
- Nursing Division, Department of Pediatrics, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Bosco Paes
- Division of Neonatology, Department of Pediatrics, McMaster University, Hamilton, ON, Canada
| | - Ratchada Kitsommart
- Division of Neonatology, Department of Pediatrics, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
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Chou PH, Liu WC, Wang SC, Lin WH, Chung YL, Chang CH, Su KP. Associations between frontal lobe activity and depressive symptoms in patients with major depressive disorder receiving rTMS treatment: a near-infrared spectroscopy study. Front Psychiatry 2023; 14:1235713. [PMID: 37654993 PMCID: PMC10466407 DOI: 10.3389/fpsyt.2023.1235713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 08/04/2023] [Indexed: 09/02/2023] Open
Abstract
Introduction The effects of repetitive transcranial magnetic stimulation (rTMS) on the left dorsolateral prefrontal cortex (DLPFC) in patients with major depressive disorder (MDD) have been proved to have antidepressant effects. However, the absence of biomarkers to assess treatment response remains a challenge. This research aims to explore the relationship between frontal lobe activity, measured using near infrared spectroscopy (NIRS), and changes in symptoms among MDD patients following rTMS treatment. Methods A total of 26 MDD patients underwent 20 sessions of 10 Hz rTMS targeting the left DLPFC. NIRS was used to measure frontal lobe activity during a verbal fluency test at baseline, after 10 rTMS sessions, and after 20 rTMS sessions. Responders were defined as individuals with more than a 50% reduction in symptoms based on the 21-item Hamilton Depression Rating Scale after 20 rTMS sessions. Results Among the 14 responders, an increase in frontal lobe activity was significantly correlated with improvements in depressive symptoms following 10 (p = 0.0001) and 20 rTMS sessions (p = 0.007). Additionally, frontal lobe activity after 10 rTMS sessions was significantly associated with symptom improvement after 20 sessions (p = 0.001). These associations were not observed among non-responders. Conclusion The findings from this study indicate distinct patterns of frontal lobe activity between responders and non-responders to rTMS treatment, suggesting that NIRS has the potential to serve as a biomarker for monitoring treatment response in MDD patients undergoing rTMS.
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Affiliation(s)
- Po-Han Chou
- Department of Psychiatry, Hsinchu Hospital, China Medical University, Hsinchu, Taiwan
| | - Wen-Chun Liu
- An-Nan Hospital, China Medical University, Tainan, Taiwan
| | - Shao-Cheng Wang
- Department of Psychiatry, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
- Department of Mental Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States
- Department of Medical Laboratory Science and Biotechnology, Chung Hwa University of Medical Technology, Tainan, Taiwan
| | - Wei-Hao Lin
- Department of Psychiatry, Puli Branch, Taichung Veterans General Hospital, Taichung, Taiwan
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Yi-Lun Chung
- An-Nan Hospital, China Medical University, Tainan, Taiwan
| | | | - Kuan-Pin Su
- An-Nan Hospital, China Medical University, Tainan, Taiwan
- Mind-Body Interface Research Center (MBI-Lab), China Medical University Hospital, Taichung, Taiwan
- College of Medicine, China Medical University, Taichung, Taiwan
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Scano A, Guanziroli E, Brambilla C, Amendola C, Pirovano I, Gasperini G, Molteni F, Spinelli L, Molinari Tosatti L, Rizzo G, Re R, Mastropietro A. A Narrative Review on Multi-Domain Instrumental Approaches to Evaluate Neuromotor Function in Rehabilitation. Healthcare (Basel) 2023; 11:2282. [PMID: 37628480 PMCID: PMC10454517 DOI: 10.3390/healthcare11162282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/02/2023] [Accepted: 08/10/2023] [Indexed: 08/27/2023] Open
Abstract
In clinical scenarios, the use of biomedical sensors, devices and multi-parameter assessments is fundamental to provide a comprehensive portrait of patients' state, in order to adapt and personalize rehabilitation interventions and support clinical decision-making. However, there is a huge gap between the potential of the multidomain techniques available and the limited practical use that is made in the clinical scenario. This paper reviews the current state-of-the-art and provides insights into future directions of multi-domain instrumental approaches in the clinical assessment of patients involved in neuromotor rehabilitation. We also summarize the main achievements and challenges of using multi-domain approaches in the assessment of rehabilitation for various neurological disorders affecting motor functions. Our results showed that multi-domain approaches combine information and measurements from different tools and biological signals, such as kinematics, electromyography (EMG), electroencephalography (EEG), near-infrared spectroscopy (NIRS), and clinical scales, to provide a comprehensive and objective evaluation of patients' state and recovery. This multi-domain approach permits the progress of research in clinical and rehabilitative practice and the understanding of the pathophysiological changes occurring during and after rehabilitation. We discuss the potential benefits and limitations of multi-domain approaches for clinical decision-making, personalized therapy, and prognosis. We conclude by highlighting the need for more standardized methods, validation studies, and the integration of multi-domain approaches in clinical practice and research.
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Affiliation(s)
- Alessandro Scano
- Institute of Intelligent Industrial Systems and Technologies for Advanced Manufacturing (STIIMA), Italian Council of National Research (CNR), Via A. Corti 12, 20133 Milan, Italy; (C.B.); (L.M.T.)
| | - Eleonora Guanziroli
- Villa Beretta Rehabilitation Center, Via N. Sauro 17, 23845 Costa Masnaga, Italy; (E.G.); (G.G.); (F.M.)
| | - Cristina Brambilla
- Institute of Intelligent Industrial Systems and Technologies for Advanced Manufacturing (STIIMA), Italian Council of National Research (CNR), Via A. Corti 12, 20133 Milan, Italy; (C.B.); (L.M.T.)
| | - Caterina Amendola
- Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milan, Italy; (C.A.); (R.R.)
| | - Ileana Pirovano
- Institute of Biomedical Technologies (ITB), Italian National Research Council (CNR), Via Fratelli Cervi 93, 20054 Segrate, Italy; (I.P.); (G.R.); (A.M.)
| | - Giulio Gasperini
- Villa Beretta Rehabilitation Center, Via N. Sauro 17, 23845 Costa Masnaga, Italy; (E.G.); (G.G.); (F.M.)
| | - Franco Molteni
- Villa Beretta Rehabilitation Center, Via N. Sauro 17, 23845 Costa Masnaga, Italy; (E.G.); (G.G.); (F.M.)
| | - Lorenzo Spinelli
- Institute for Photonics and Nanotechnology (IFN), Italian National Research Council (CNR), Piazza Leonardo da Vinci 32, 20133 Milan, Italy;
| | - Lorenzo Molinari Tosatti
- Institute of Intelligent Industrial Systems and Technologies for Advanced Manufacturing (STIIMA), Italian Council of National Research (CNR), Via A. Corti 12, 20133 Milan, Italy; (C.B.); (L.M.T.)
| | - Giovanna Rizzo
- Institute of Biomedical Technologies (ITB), Italian National Research Council (CNR), Via Fratelli Cervi 93, 20054 Segrate, Italy; (I.P.); (G.R.); (A.M.)
| | - Rebecca Re
- Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milan, Italy; (C.A.); (R.R.)
- Institute for Photonics and Nanotechnology (IFN), Italian National Research Council (CNR), Piazza Leonardo da Vinci 32, 20133 Milan, Italy;
| | - Alfonso Mastropietro
- Institute of Biomedical Technologies (ITB), Italian National Research Council (CNR), Via Fratelli Cervi 93, 20054 Segrate, Italy; (I.P.); (G.R.); (A.M.)
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Nantongo JS, Tinyiro SE, Nakitto M, Serunkuma E, Namugga P, Ayetigbo O, Mayanja S, Moyo M, Ssali R, Mendes T. End-user preferences to enhance prospects for varietal acceptance and adoption in potato breeding in Uganda. J Sci Food Agric 2023. [PMID: 37550770 DOI: 10.1002/jsfa.12882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 06/29/2023] [Accepted: 08/08/2023] [Indexed: 08/09/2023]
Abstract
BACKGROUND Potato varieties have diverse biophysical characteristics, so it is important for breeders to have the capacity to choose those that meet the preferences of end users, such as mealiness, firmness, and taste, among others. Combining user preferences with descriptive information regarding the sensory characteristics of boiled potatoes can contribute to the improvement of consumer-driven varieties. This study aimed to factor in the preferences of end users to improve the prospects for varietal acceptance, adoption, and discrimination among genotypes in potato breeding. RESULTS The priority quality traits (traits that play the most significant roles in acceptance and adoption) of the boiled potatoes were determined by evaluating gender and livelihood using the G+ tool. The G+ tool is designed to assess gender impact on roots, tubers and bananas (RTB) traits by serving as a validation check to reflect on important gender-based issues in agricultural food systems in order to reduce harm and promote positive impact. Potato genotypes were differentiated by penetration (textural parameters as measured by standard texture probe) and the procedure was repeatable, as there was no significant difference between the cooking replicates at 40 min of cooking. Instrument-based texture parameters, such as penetration peak force (hardness/firmness) and area (area under the curve, which represents energy needed to penetrate) of boiled potato tubers were significantly associated with sensory attributes such as fracturability and hardness in the mouth. An attempt to differentiate genotypes using near-infrared spectroscopy (NIRS) revealed that the average results observed for the calibration for yellow color (r2 = 0.70), homogeneity of color (r2 = 0.48), moisture in mass (r2 = 0.40), and uniformity of texture (r2 = 0.56) suggested that these parameters could be used for initial breeding screening purposes. CONCLUSIONS The preferred traits of the boiled potato can be integrated into the potato-breeding program/product profile. Near-infrared spectroscopy shows strong potential to predict potato color and the ability of NIRS models to predict some texture attributes is also promising. © 2023 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
| | | | | | | | - Prossy Namugga
- National Agriculture Research Laboratories, Kampala, Uganda
| | | | - Sarah Mayanja
- International Potato Center (CIP-SSA), Kampala, Uganda
| | - Mukani Moyo
- International Potato Center (CIP-SSA Regional Office), Nairobi, Kenya
| | - Reuben Ssali
- International Potato Center (CIP-SSA), Kampala, Uganda
| | - Thiago Mendes
- International Potato Center (CIP-SSA Regional Office), Nairobi, Kenya
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