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Jin S, Huang J, Dong Y, Hu D, Sun J, Li Z, Zhong BY, Liu Z, Zhu R, Wang G. Ultrastable PLGA-Coated 177Lu-Microspheres for Radioembolization Therapy of Hepatocellular Carcinoma. Mol Pharm 2024. [PMID: 38822792 DOI: 10.1021/acs.molpharmaceut.4c00138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2024]
Abstract
Transarterial radioembolization (TARE) is a highly effective localized radionuclide therapy that has been successfully used to treat hepatocellular carcinoma (HCC). Extensive research has been conducted on the use of radioactive microspheres (MSs) in TARE, and the development of ideal radioactive MSs is crucial for clinical trials and patient treatment. This study presents the development of a radioactive MS for TARE of HCC. These MSs, referred to as 177Lu-MS@PLGA, consist of poly(lactic-co-glycolic acid) (PLGA) copolymer and radioactive silica MSs, labeled with 177Lu and then coated with PLGA. It has an extremely high level of radiostability. Cellular experiments have shown that it can cause DNA double-strand breaks, leading to cell death. In vivo radiostability of 177Lu-MS@PLGA is demonstrated by microSPECT/CT imaging. In addition, the antitumor study has shown that TARE of 177Lu-MS@PLGA can effectively restrain tumor growth without harmful side effects. Thus, 177Lu-MS@PLGA exhibits significant potential as a radioactive MS for the treatment of HCC.
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Affiliation(s)
- Shuo Jin
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, China
| | - Jintao Huang
- Department of Interventional Radiology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Yi Dong
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, China
| | - Di Hu
- Department of Interventional Radiology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Jing Sun
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, China
| | - Zhihao Li
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, China
| | - Bin-Yan Zhong
- Department of Interventional Radiology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Zhiyong Liu
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, China
| | - Ran Zhu
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, China
| | - Guanglin Wang
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, China
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Boivin-Proulx LA, Marquis-Gravel G, Rousseau-Saine N, Harel F, Jolicoeur EM, Pelletier-Galarneau M. Hyperventilation testing in the diagnosis of vasospastic angina: A clinical review and meta-analysis. Eur J Clin Invest 2024; 54:e14178. [PMID: 38348627 DOI: 10.1111/eci.14178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 01/30/2024] [Accepted: 01/31/2024] [Indexed: 05/15/2024]
Abstract
BACKGROUND Given the limited access to invasive vasospastic reactivity testing in Western Countries, there is a need to further develop alternative non-invasive diagnostic methods for vasospastic angina (VSA). Hyperventilation testing (HVT) is defined as a class IIa recommendation to diagnose VSA by the Japanese Society of Cardiology. METHODS In this systematic review and meta-analysis reported according to the PRISMA statement, we review the mechanisms, methods, modalities and diagnostic accuracy of non-invasive HVT for the diagnostic of VSA. RESULTS A total of 106 articles published between 1980 and 2022 about VSA and HVT were included in the systematic review, among which 16 were included in the meta-analysis for diagnostic accuracy. Twelve electrocardiogram-HVT studies including 804 patients showed a pooled sensitivity of 54% (95% confidence intervals [CI]; 30%-76%) and a pooled specificity of 99% (95% CI; 88%-100%). Four transthoracic echocardiography-HVT studies including 197 patients revealed a pooled sensitivity of 90% (95% CI; 82%-94%) and a pooled specificity of 98% (95% CI; 86%-100%). Six myocardial perfusion imaging-HVT studies including 112 patients yielded a pooled sensitivity of 95% (95% CI; 63%-100%) and a pooled specificity of 78% (95% CI; 19%-98%). Non-invasive HVT resulted in a low rate of adverse events, ventricular arrhythmias being the most frequently reported, and were resolved with the administration of nitroglycerin. CONCLUSIONS Non-invasive HVT offers a safe alternative with high diagnostic accuracy to diagnose VSA in patients with otherwise undiagnosed causes of chest pain.
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Affiliation(s)
| | | | | | - François Harel
- Montreal Heart Institute, University of Montreal, Montreal, Quebec, Canada
| | - E Marc Jolicoeur
- CHUM Research Center and Cardiovascular Center, Montreal, Quebec, Canada
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Vitzthum H, Koch M, Eckermann L, Svendsen SL, Berg P, Hübner CA, Wagner CA, Leipziger J, Meyer-Schwesinger C, Ehmke H. The AE4 transporter mediates kidney acid-base sensing. Nat Commun 2023; 14:3051. [PMID: 37236964 DOI: 10.1038/s41467-023-38562-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 05/05/2023] [Indexed: 05/28/2023] Open
Abstract
The kidney plays a key role in the correction of systemic acid-base imbalances. Central for this regulation are the intercalated cells in the distal nephron, which secrete acid or base into the urine. How these cells sense acid-base disturbances is a long-standing question. Intercalated cells exclusively express the Na+-dependent Cl-/HCO3- exchanger AE4 (Slc4a9). Here we show that AE4-deficient mice exhibit a major dysregulation of acid-base balance. By combining molecular, imaging, biochemical and integrative approaches, we demonstrate that AE4-deficient mice are unable to sense and appropriately correct metabolic alkalosis and acidosis. Mechanistically, a lack of adaptive base secretion via the Cl-/HCO3- exchanger pendrin (Slc26a4) is the key cellular cause of this derailment. Our findings identify AE4 as an essential part of the renal sensing mechanism for changes in acid-base status.
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Affiliation(s)
- H Vitzthum
- Center for Experimental Medicine, Institute of Cellular and Integrative Physiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - M Koch
- Center for Experimental Medicine, Institute of Cellular and Integrative Physiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - L Eckermann
- Center for Experimental Medicine, Institute of Cellular and Integrative Physiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - S L Svendsen
- Department of Biomedicine, Physiology, Health, Aarhus University, Aarhus, Denmark
| | - P Berg
- Department of Biomedicine, Physiology, Health, Aarhus University, Aarhus, Denmark
| | - C A Hübner
- Institute of Human Genetics, University Hospital Jena, Friedrich Schiller University, Jena, Germany
| | - C A Wagner
- Institute of Physiology, University of Zurich, Zurich, Switzerland
- National Center of Competence in Research NCCR Kidney.CH, Zurich, Switzerland
| | - J Leipziger
- Department of Biomedicine, Physiology, Health, Aarhus University, Aarhus, Denmark
| | - C Meyer-Schwesinger
- Center for Experimental Medicine, Institute of Cellular and Integrative Physiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - H Ehmke
- Center for Experimental Medicine, Institute of Cellular and Integrative Physiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
- German Center for Cardiovascular Research, Partner Site Hamburg/Kiel/Lübeck, Hamburg, Germany.
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4
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Kiełbik A, Sowa PW, Pakhomov AG, Gudvangen E, Mangalanathan U, Kulbacka J, Pakhomova ON. Urine protects urothelial cells against killing with nanosecond pulsed electric fields. Bioelectrochemistry 2023; 149:108289. [DOI: 10.1016/j.bioelechem.2022.108289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 10/01/2022] [Accepted: 10/05/2022] [Indexed: 11/07/2022]
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Zieliński K, Lisowska B, Siewruk K, Sady M, Ferenc K, Barwijuk M, Olszewski J, Anusz K, Jabłoński A, Gajewska M, Okrzeja P, Michnikowski M, Pijanowska DG, Pluta K, Remiszewska E, Darowski M, Zabielski R, Liebert A, Kramek-Romanowska K, Stecka A, Kozarski M, Pasledni R, Gajewski Z, Ładyżyński P. Automatic air volume control system for ventilation of two patients using a single ventilator: a large animal model study. Sci Rep 2022; 12:22591. [PMID: 36585425 PMCID: PMC9801355 DOI: 10.1038/s41598-022-26922-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 12/21/2022] [Indexed: 12/31/2022] Open
Abstract
The COVID-19 pandemic outbreak led to a global ventilator shortage. Hence, various strategies for using a single ventilator to support multiple patients have been considered. A device called Ventil previously validated for independent lung ventilation was used in this study to evaluate its usability for shared ventilation. We performed experiments with a total number of 16 animals. Eight pairs of pigs were ventilated by a ventilator or anesthetic machine and by Ventil for up to 27 h. In one experiment, 200 ml of saline was introduced to one subject's lungs to reduce their compliance. The experiments were analyzed in terms of arterial blood gases and respiratory parameters. In addition to the animal study, we performed a series of laboratory experiments with artificial lungs (ALs). The resistance and compliance of one AL (affected) were altered, while the tidal volume (TV) and peak pressure (Ppeak) in the second (unaffected) AL were analyzed. In addition, to assess the risk of transmission of pathogens between AL respiratory tracts, laboratory tests were performed using phantoms of virus particles. The physiological level of analyzed parameters in ventilated animals was maintained, except for CO2 tension, for which a permissive hypercapnia was indicated. Experiments did not lead to injuries in the animal's lungs except for one subject, as indicated by CT scan analysis. In laboratory experiments, changes in TV and Ppeak in the unaffected AL were less than 11%, except for 2 cases where the TV change was 20%. No cross-contamination was found in simulations of pathogen transmission. We conclude that ventilation using Ventil can be considered safe in patients undergoing deep sedation without spontaneous breathing efforts.
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Affiliation(s)
- Krzysztof Zieliński
- grid.413454.30000 0001 1958 0162Nalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, 4 Ks. Trojdena Str. 02109, Warsaw, Poland
| | - Barbara Lisowska
- Department of Anesthesiology and Intensive Medical Care, National Geriatrics, Rheumatology and Rehabilitation Institute, Warsaw, Poland
| | - Katarzyna Siewruk
- grid.13276.310000 0001 1955 7966Veterinary Research Center, Center for Biomedical Research and Research Center for Regenerative Medicine, Warsaw University of Life Sciences – SGGW, Warsaw, Poland
| | - Maria Sady
- grid.13276.310000 0001 1955 7966Veterinary Research Center, Center for Biomedical Research and Research Center for Regenerative Medicine, Warsaw University of Life Sciences – SGGW, Warsaw, Poland ,grid.13276.310000 0001 1955 7966Center of Translational Medicine, Warsaw University of Life Sciences – SGGW, Warsaw, Poland
| | - Karolina Ferenc
- grid.13276.310000 0001 1955 7966Veterinary Research Center, Center for Biomedical Research and Research Center for Regenerative Medicine, Warsaw University of Life Sciences – SGGW, Warsaw, Poland ,grid.13276.310000 0001 1955 7966Center of Translational Medicine, Warsaw University of Life Sciences – SGGW, Warsaw, Poland
| | - Maciej Barwijuk
- grid.13339.3b0000000113287408I Department of Anesthesiology and Intensive Care, Medical University of Warsaw, Warsaw, Poland
| | - Jarosław Olszewski
- grid.13276.310000 0001 1955 7966Veterinary Research Center, Center for Biomedical Research and Research Center for Regenerative Medicine, Warsaw University of Life Sciences – SGGW, Warsaw, Poland ,grid.13276.310000 0001 1955 7966Center of Translational Medicine, Warsaw University of Life Sciences – SGGW, Warsaw, Poland
| | - Krzysztof Anusz
- grid.13276.310000 0001 1955 7966Veterinary Research Center, Center for Biomedical Research and Research Center for Regenerative Medicine, Warsaw University of Life Sciences – SGGW, Warsaw, Poland
| | - Artur Jabłoński
- grid.13276.310000 0001 1955 7966Veterinary Research Center, Center for Biomedical Research and Research Center for Regenerative Medicine, Warsaw University of Life Sciences – SGGW, Warsaw, Poland ,grid.13276.310000 0001 1955 7966Center of Translational Medicine, Warsaw University of Life Sciences – SGGW, Warsaw, Poland
| | - Magdalena Gajewska
- grid.13276.310000 0001 1955 7966Veterinary Research Center, Center for Biomedical Research and Research Center for Regenerative Medicine, Warsaw University of Life Sciences – SGGW, Warsaw, Poland ,grid.13339.3b0000000113287408Medical University of Warsaw, Warsaw, Poland
| | - Piotr Okrzeja
- grid.413454.30000 0001 1958 0162Nalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, 4 Ks. Trojdena Str. 02109, Warsaw, Poland
| | - Marcin Michnikowski
- grid.413454.30000 0001 1958 0162Nalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, 4 Ks. Trojdena Str. 02109, Warsaw, Poland
| | - Dorota G. Pijanowska
- grid.413454.30000 0001 1958 0162Nalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, 4 Ks. Trojdena Str. 02109, Warsaw, Poland
| | - Krzysztof Pluta
- grid.413454.30000 0001 1958 0162Nalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, 4 Ks. Trojdena Str. 02109, Warsaw, Poland
| | - Elżbieta Remiszewska
- grid.413454.30000 0001 1958 0162Nalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, 4 Ks. Trojdena Str. 02109, Warsaw, Poland
| | - Marek Darowski
- grid.413454.30000 0001 1958 0162Nalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, 4 Ks. Trojdena Str. 02109, Warsaw, Poland
| | - Romuald Zabielski
- grid.13276.310000 0001 1955 7966Veterinary Research Center, Center for Biomedical Research and Research Center for Regenerative Medicine, Warsaw University of Life Sciences – SGGW, Warsaw, Poland ,grid.13276.310000 0001 1955 7966Center of Translational Medicine, Warsaw University of Life Sciences – SGGW, Warsaw, Poland
| | - Adam Liebert
- grid.413454.30000 0001 1958 0162Nalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, 4 Ks. Trojdena Str. 02109, Warsaw, Poland
| | - Katarzyna Kramek-Romanowska
- grid.1035.70000000099214842Faculty of Chemical and Process Engineering, Warsaw University of Technology, Warsaw, Poland
| | - Anna Stecka
- grid.413454.30000 0001 1958 0162Nalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, 4 Ks. Trojdena Str. 02109, Warsaw, Poland
| | - Maciej Kozarski
- grid.413454.30000 0001 1958 0162Nalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, 4 Ks. Trojdena Str. 02109, Warsaw, Poland
| | - Raman Pasledni
- grid.413454.30000 0001 1958 0162Nalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, 4 Ks. Trojdena Str. 02109, Warsaw, Poland
| | - Zdzisław Gajewski
- grid.13276.310000 0001 1955 7966Veterinary Research Center, Center for Biomedical Research and Research Center for Regenerative Medicine, Warsaw University of Life Sciences – SGGW, Warsaw, Poland ,grid.13276.310000 0001 1955 7966Center of Translational Medicine, Warsaw University of Life Sciences – SGGW, Warsaw, Poland
| | - Piotr Ładyżyński
- grid.413454.30000 0001 1958 0162Nalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, 4 Ks. Trojdena Str. 02109, Warsaw, Poland
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AGUS A, WELLIS W, SEPRIADI S, WULANDARI I, SARI MP. The effect of consuming iron supplements and continuous running exercises on the increasing level of hemoglobin. GAZZETTA MEDICA ITALIANA ARCHIVIO PER LE SCIENZE MEDICHE 2022. [DOI: 10.23736/s0393-3660.21.04678-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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El Khatib M, Russo V, Prencipe G, Mauro A, Wyrwa R, Grimm G, Di Mattia M, Berardinelli P, Schnabelrauch M, Barboni B. Amniotic Epithelial Stem Cells Counteract Acidic Degradation By-Products of Electrospun PLGA Scaffold by Improving Their Immunomodulatory Profile In Vitro. Cells 2021; 10:cells10113221. [PMID: 34831443 PMCID: PMC8623927 DOI: 10.3390/cells10113221] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 11/12/2021] [Accepted: 11/16/2021] [Indexed: 12/25/2022] Open
Abstract
Electrospun poly(lactic-co-glycolic acid) (PLGA) scaffolds with highly aligned fibers (ha-PLGA) represent promising materials in the field of tendon tissue engineering (TE) due to their characteristics in mimicking fibrous extracellular matrix (ECM) of tendon native tissue. Among these properties, scaffold biodegradability must be controlled allowing its replacement by a neo-formed native tendon tissue in a controlled manner. In this study, ha-PLGA were subjected to hydrolytic degradation up to 20 weeks, under di-H2O and PBS conditions according to ISO 10993-13:2010. These were then characterized for their physical, morphological, and mechanical features. In vitro cytotoxicity tests were conducted on ovine amniotic epithelial stem cells (oAECs), up to 7 days, to assess the effect of non-buffered and buffered PLGA by-products at different concentrations on cell viability and their stimuli on oAECs’ immunomodulatory properties. The ha-PLGA scaffolds degraded slowly as evidenced by a slight decrease in mass loss (14%) and average molecular weight (35%), with estimated degradation half-time of about 40 weeks under di-H2O. The ultrastructure morphology of the scaffolds showed no significant fiber degradation even after 20 weeks, but alteration of fiber alignment was already evident at week 1. Moreover, mechanical properties decreased throughout the degradation times under wet as well as dry PBS conditions. The influence of acid degradation media on oAECs was dose-dependent, with a considerable effect at 7 days’ culture point. This effect was notably reduced by using buffered media. To a certain level, cells were able to compensate the generated inflammation-like microenvironment by upregulating IL-10 gene expression and favoring an anti-inflammatory rather than pro-inflammatory response. These in vitro results are essential to better understand the degradation behavior of ha-PLGA in vivo and the effect of their degradation by-products on affecting cell performance. Indeed, buffering the degradation milieu could represent a promising strategy to balance scaffold degradation. These findings give good hope with reference to the in vivo condition characterized by physiological buffering systems.
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Affiliation(s)
- Mohammad El Khatib
- Unit of Basic and Applied Biosciences, Faculty of Bioscience and Agro-Food and Environmental Technology, University of Teramo, 64100 Teramo, Italy; (M.E.K.); (V.R.); (A.M.); (M.D.M.); (P.B.); (B.B.)
| | - Valentina Russo
- Unit of Basic and Applied Biosciences, Faculty of Bioscience and Agro-Food and Environmental Technology, University of Teramo, 64100 Teramo, Italy; (M.E.K.); (V.R.); (A.M.); (M.D.M.); (P.B.); (B.B.)
| | - Giuseppe Prencipe
- Unit of Basic and Applied Biosciences, Faculty of Bioscience and Agro-Food and Environmental Technology, University of Teramo, 64100 Teramo, Italy; (M.E.K.); (V.R.); (A.M.); (M.D.M.); (P.B.); (B.B.)
- Correspondence:
| | - Annunziata Mauro
- Unit of Basic and Applied Biosciences, Faculty of Bioscience and Agro-Food and Environmental Technology, University of Teramo, 64100 Teramo, Italy; (M.E.K.); (V.R.); (A.M.); (M.D.M.); (P.B.); (B.B.)
| | - Ralf Wyrwa
- Department of Biomaterials, INNOVENT e.V., 07745 Jena, Germany; (R.W.); (G.G.); (M.S.)
| | - Gabriele Grimm
- Department of Biomaterials, INNOVENT e.V., 07745 Jena, Germany; (R.W.); (G.G.); (M.S.)
| | - Miriam Di Mattia
- Unit of Basic and Applied Biosciences, Faculty of Bioscience and Agro-Food and Environmental Technology, University of Teramo, 64100 Teramo, Italy; (M.E.K.); (V.R.); (A.M.); (M.D.M.); (P.B.); (B.B.)
| | - Paolo Berardinelli
- Unit of Basic and Applied Biosciences, Faculty of Bioscience and Agro-Food and Environmental Technology, University of Teramo, 64100 Teramo, Italy; (M.E.K.); (V.R.); (A.M.); (M.D.M.); (P.B.); (B.B.)
| | | | - Barbara Barboni
- Unit of Basic and Applied Biosciences, Faculty of Bioscience and Agro-Food and Environmental Technology, University of Teramo, 64100 Teramo, Italy; (M.E.K.); (V.R.); (A.M.); (M.D.M.); (P.B.); (B.B.)
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Arpornmaeklong P, Sareethammanuwat M, Apinyauppatham K, Boonyuen S. Characteristics and biologic effects of thermosensitive quercetin-chitosan/collagen hydrogel on human periodontal ligament stem cells. J Biomed Mater Res B Appl Biomater 2021; 109:1656-1670. [PMID: 33644957 DOI: 10.1002/jbm.b.34823] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 01/05/2021] [Accepted: 02/14/2021] [Indexed: 12/11/2022]
Abstract
Thermosensitive hydrogels could function as scaffolds and delivery vehicle of natural flavonoids. The current study aimed to investigate effects of chitosan/collagen ratios on properties of thermosensitive beta-glycerophosphate (bGP) chitosan/collagen hydrogels as delivery vehicle of quercetin and then examined effects of quercetin-hydrogels on growth and cell viability of human periodontal ligament stem cells (hPDLSCs). Microstructure and physical, mechanical and antioxidant properties and quercetin release profiles of the hydrogels were investigated. Fourier transform infrared spectroscopy and X-ray powder diffraction analyses were performed to examine gelation process of the hydrogels. Antioxidant assays were conducted to measure antioxidant capacity of quercetin-hydrogels. It was found that bGP-chitosan/collagen hydrogels exhibited porous structures with interconnected pore architecture and could sustain quercetin release. Chitosan content improved well defined porous structure, increased porosity of the hydrogels and decreased releasing rate of quercetin from the hydrogels. The quercetin-bGP-2:1 (wt/wt) chitosan/collagen hydrogels exhibited antioxidant capacity and were able to promote growth of hPDLSCs in a dose dependent manner. In conclusion, the thermosensitive quercetin-bGP-2:1 (wt/wt) chitosan/collagen hydrogel demonstrated optimal properties of scaffolds for bone tissue engineering and sustained release of natural flavonoids. Incorporating quercetin in the chitosan/collagen hydrogel enhanced bioactive microenvironment that supported stem cell encapsulation.
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Affiliation(s)
- Premjit Arpornmaeklong
- Oral and Maxillofacial Surgery Division, Faculty of Dentistry, Thammasat University-Rangsit campus, Khlong Luang, Pathum Thani, Thailand
| | - Maytha Sareethammanuwat
- Master of Science Program in Dental Implantology, Faculty of Dentistry, Thammasat University-Rangsit campus, Khlong Luang, Pathum Thani, Thailand
| | - Komsan Apinyauppatham
- Oral and Maxillofacial Surgery Division, Faculty of Dentistry, Thammasat University-Rangsit campus, Khlong Luang, Pathum Thani, Thailand
| | - Supakorn Boonyuen
- Department of Chemistry, Faculty of Science and Technology, Thammasat University-Rangsit campus, Khlong Luang, Pathum Thani, Thailand
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Mendez Y, Ochoa-Martinez FE, Ambrosii T. Chronic Obstructive Pulmonary Disease and Respiratory Acidosis in the Intensive Care Unit. CURRENT RESPIRATORY MEDICINE REVIEWS 2019. [DOI: 10.2174/1573398x15666181127141410] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Chronic obstructive lung disease is a common and preventable disease. One of its
pathophysiological consequences is the presence of carbon dioxide retention due to hypoventilation
and ventilation/perfusion mismatch, which in consequence will cause a decrease in the acid/base
status of the patient. Whenever a patient develops an acute exacerbation, acute respiratory
hypercapnic failure will appear and the necessity of a hospital ward is a must. However, current
guidelines exist to better identify these patients and make an accurate diagnosis by using clinical
skills and laboratory data such as arterial blood gases. Once the patient is identified, rapid treatment
will help to diminish the hospital length and the avoidance of intensive care unit. On the other hand,
if there is the existence of comorbidities such as cardiac failure, gastroesophageal reflux disease,
pulmonary embolism or depression, it is likely that the patient will be admitted to the intensive care
unit with the requirement of intubation and mechanical ventilation.
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Affiliation(s)
- Yamely Mendez
- Faculty of Medicine “Dr. Alberto Romo Caballero”, Universidad Autonoma de Tamaulipas, Tampico, Mexico
| | - Francisco E. Ochoa-Martinez
- Faculty of Medicine, Universidad Autonoma de Nuevo Leon, University Hospital “Dr. Jose Eleuterio Gonzalez”, Monterrey, Mexico
| | - Tatiana Ambrosii
- Chair of Anesthesiology and Reanimatology “Valeriu Ghereg”, State University of Medicine and Pharmacy “Nicolae Testemitanu”, Chisinau, Moldova, Republic of
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Acute Opiate Overdose: An Update on Management Strategies in Emergency Department and Critical Care Unit. Am J Ther 2019; 26:e380-e387. [PMID: 28952972 DOI: 10.1097/mjt.0000000000000681] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Opioids are natural, semisynthetic, or synthetic substances that act on opioid receptors in the central nervous system. Clinically, they are prescribed for pain management. Opioid overdose (OOD) occurs when the central nervous system and respiratory drive are suppressed because of excessive consumption of the drug. Symptoms of OOD include drowsiness, slow breathing, pinpoint pupils, cyanosis, loss of consciousness, and death. Due to their addictive potential and easy accessibility opioid addiction is a growing problem worldwide. Emergency medical services and the emergency department often perform initial management of OOD. Thereafter, some patients require intensive care management because of respiratory failure, metabolic encephalopathy, acute kidney injury, and other organ failure. AREAS OF UNCERTAINTY We sought to review the literature and present the most up-to-date treatment strategies of patients with acute OOD requiring critical care management. DATA SOURCES A PubMed search was conducted to review all articles between 1950 and 2017 and the relevant articles were cited. RESULTS & CONCLUSIONS Worldwide, approximately 69,000 people die of OOD each year, and approximately 15 million people have opioid addiction. In the United States, death from OOD has increased almost 5-fold from 2001 to 2013. OOD leading to intensive care unit admission has increased by 50% from 2009 to 2015. At the same time, the mortality associated with these admissions has doubled. The management strategies include airway management, use of reversal agents, assessing and treating coingestions and associated complications, treatment of opioid withdrawal with alpha-agonists, and psychosocial support to help with opiate addiction and withdrawal. This warrants awareness among clinicians regarding the adverse effects associated with opioid use, management strategies, and calls for a multidisciplinary approach to treating these patients.
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Kong D, Chen Z. Evaluation of the interaction between hydroxyapatite and bisphosphonate by nonlinear capillary electrochromatography. J Sep Sci 2017; 40:2030-2036. [DOI: 10.1002/jssc.201700028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 02/14/2017] [Accepted: 02/20/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Deying Kong
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education; Wuhan University School of Pharmaceutical Sciences; Wuhan China
- State Key Laboratory of Transducer Technology; Chinese Academy of Sciences; Beijing China
| | - Zilin Chen
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education; Wuhan University School of Pharmaceutical Sciences; Wuhan China
- State Key Laboratory of Transducer Technology; Chinese Academy of Sciences; Beijing China
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Kreü S, Jazrawi A, Miller J, Baigi A, Chew M. Alkalosis in Critically Ill Patients with Severe Sepsis and Septic Shock. PLoS One 2017; 12:e0168563. [PMID: 28045915 PMCID: PMC5207677 DOI: 10.1371/journal.pone.0168563] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 12/03/2016] [Indexed: 11/18/2022] Open
Abstract
INTRODUCTION Although metabolic alkalosis is a common occurrence in intensive care units (ICUs), no study has evaluated its prevalence or outcomes in patients with severe sepsis or septic shock. METHODS This is a retrospective cohort study of critically ill patients suffering from severe sepsis and septic shock admitted to the ICUs of Halmstad and Varberg County hospitals. From 910 patient records, 627 patients met the inclusion criteria. We investigated the relationship between metabolic alkalosis and mortality. Further, we studied the relationship between metabolic alkalosis and ICU length of stay (LOS). RESULTS Metabolic alkalosis was associated with decreased 30-day and 12-month mortalities. This effect was however lost when a multivariate analysis was conducted, correcting for age, gender, pH on admission, base excess (BE) on admission, Simplified Acute Physiology Score III (SAPS III) and acute kidney injury (AKI). We then analyzed for any dose-response effect between the severity of metabolic alkalosis and mortality and found no relationship. Bivariate analysis showed that metabolic alkalosis had a significant effect on the length of ICU stay. When adjusting for age, sex, pH at admission, BE at admission, SAPS III and AKI in a multivariate analysis, metabolic alkalosis significantly contributed to prolonged ICU length of stay. In two separate sensitivity analyses pure metabolic alkalosis and late metabolic alkalosis (time of onset >48 hours) were the only significant predictor of increased ICU length of stay. CONCLUSION Metabolic alkalosis did not have any effect on 30-day and 12-month mortalities after adjusting for age, sex, SAPS III-score, pH and BE on admission and AKI in a multivariate analysis. The presence of metabolic alkalosis was independently associated with an increased ICU length of stay.
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Affiliation(s)
- Simon Kreü
- Institute for Clinical Sciences Malmö, Lund University, Lund, Sweden
- Department of Cardiothoracic and Vascular Surgery, Örebro University Hospital, Örebro, Sweden
- * E-mail:
| | - Allan Jazrawi
- Institute for Clinical Sciences Malmö, Lund University, Lund, Sweden
- Department of General Surgery, Västmanland County Hospital, Västerås, Sweden
| | - Jan Miller
- Institute for Clinical Sciences Malmö, Lund University, Lund, Sweden
| | - Amir Baigi
- Institute of Medicine, General Medicine and Public Health, Gothenburg University, Gothenburg, Sweden
| | - Michelle Chew
- Institute for Clinical Sciences Malmö, Lund University, Lund, Sweden
- Department of Anaesthesia and Intensive Care, Linköping University Hospital, Linköping, Sweden
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13
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Martin ŞA, Tomescu V, Voidăzan S. Secondary elements of blood pH variation can influence the effort effectiveness based on adaptive changes within a group of elite athletes. ACTA ACUST UNITED AC 2016; 89:506-512. [PMID: 27857520 PMCID: PMC5111491 DOI: 10.15386/cjmed-643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Revised: 02/17/2016] [Accepted: 03/18/2016] [Indexed: 11/28/2022]
Abstract
Aim pH is the direct indicator of the body reaction following the activities performed. Establishing precise correlations between pH and blood biochemical parameters might support the balancing of values during periods of marked physical activity. Method We conducted a case study in a group of elite rowers. Twelve athletes were included in the study. Monitoring was carried out by collecting biological samples several times a day: in the morning, 80 minutes pre-workout, 12 hours after the last physical effort performed, at two different times, 10 days apart. Determinations were aimed at adapting the reported biochemical parameters depending on the effort performed. The following parameters were monitored: pH, HCO3, pCO2, pO2, BE, SBE, SBC, Ca++, Mg++, LDH, GPT, T-Pro, and Alb. Results The mean value of pH found in athletes was 7.41±0.024. The value obtained was significantly correlated to biochemical parameters such as BE (2.32±1.79), SBC (1.67±1.45), SBE (2.70±1.75). However, bicarbonate (HCO3) was statistically significantly related with SBE, SBC, SBE, and pO2, but did not present a strong association with the pH value (p=0.094). However, values such as Alb, Ca++, LDH, BE, SBC are related to pH value as a result of variations in the data submitted. Conclusions The processed data evidence the fact that blood pH, in this case, is significantly influenced by a number of indices that correlate energy system activity, individual adaptation to effort, and the recovery process. The parameters under investigation (SBE, SBC, SBE, CPK, LDH) are associated with pH changes that could confirm the recovery efficiency of the athlete, along with a possible metabolic acidosis/alkalosis.
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Affiliation(s)
- Ştefan Adrian Martin
- Community Nutrition and Food Hygiene Department, University of Medicine and Pharmacy Tîrgu Mureş, Romania; Romanian Rowing Federation, University of Medicine and Pharmacy Tîrgu Mureş, Romania
| | - Valeriu Tomescu
- Romanian Olympic Sports Committee, University of Medicine and Pharmacy Tîrgu Mureş, Romania
| | - Septimiu Voidăzan
- Epidemiology Department, University of Medicine and Pharmacy Tîrgu Mureş, Romania
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14
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Respiratory history taking and physical assessment. Respir Care 2016. [DOI: 10.1201/9781315382067-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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15
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Aristizábal-Salazar RE, Calvo-Torres LF, Valencia-Arango LA, Montoya-Cañon M, Barbosa-Gantiva O, Hincapié-Baena V. Equilibrio ácido-base: el mejor enfoque clínico. COLOMBIAN JOURNAL OF ANESTHESIOLOGY 2015. [DOI: 10.1016/j.rca.2015.04.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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16
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Aristizábal-Salazar RE, Calvo-Torres LF, Valencia-Arango LA, Montoya-Cañon M, Barbosa-Gantiva O, Hincapié-Baena V. Acid–base equilibrium: The best clinical approach. COLOMBIAN JOURNAL OF ANESTHESIOLOGY 2015. [DOI: 10.1016/j.rcae.2015.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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17
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Campion KL, McCormick WD, Warwicker J, Khayat MEB, Atkinson-Dell R, Steward MC, Delbridge LW, Mun HC, Conigrave AD, Ward DT. Pathophysiologic Changes in Extracellular pH Modulate Parathyroid Calcium-Sensing Receptor Activity and Secretion via a Histidine-Independent Mechanism. J Am Soc Nephrol 2015; 26:2163-71. [PMID: 25556167 DOI: 10.1681/asn.2014070653] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Accepted: 11/10/2014] [Indexed: 01/06/2023] Open
Abstract
The calcium-sensing receptor (CaR) modulates renal calcium reabsorption and parathyroid hormone (PTH) secretion and is involved in the etiology of secondary hyperparathyroidism in CKD. Supraphysiologic changes in extracellular pH (pHo) modulate CaR responsiveness in HEK-293 (CaR-HEK) cells. Therefore, because acidosis and alkalosis are associated with altered PTH secretion in vivo, we examined whether pathophysiologic changes in pHo can significantly alter CaR responsiveness in both heterologous and endogenous expression systems and whether this affects PTH secretion. In both CaR-HEK and isolated bovine parathyroid cells, decreasing pHo from 7.4 to 7.2 rapidly inhibited CaR-induced intracellular calcium (Ca(2+)i) mobilization, whereas raising pHo to 7.6 potentiated responsiveness to extracellular calcium (Ca(2+)o). Similar pHo effects were observed for Ca(2+)o-induced extracellular signal-regulated kinase phosphorylation and actin polymerization and for L-Phe-induced Ca(2+)i mobilization. Intracellular pH was unaffected by acute 0.4-unit pHo changes, and the presence of physiologic albumin concentrations failed to attenuate the pHo-mediated effects. None of the individual point mutations created at histidine or cysteine residues in the extracellular domain of CaR attenuated pHo sensitivity. Finally, pathophysiologic pHo elevation reversibly suppressed PTH secretion from perifused human parathyroid cells, and acidosis transiently increased PTH secretion. Therefore, pathophysiologic pHo changes can modulate CaR responsiveness in HEK-293 and parathyroid cells independently of extracellular histidine residues. Specifically, pathophysiologic acidification inhibits CaR activity, thus permitting PTH secretion, whereas alkalinization potentiates CaR activity to suppress PTH secretion. These findings suggest that acid-base disturbances may affect the CaR-mediated control of parathyroid function and calcium metabolism in vivo.
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Affiliation(s)
- Katherine L Campion
- Faculty of Life Sciences, The University of Manchester, Manchester, United Kingdom
| | - Wanda D McCormick
- Faculty of Life Sciences, The University of Manchester, Manchester, United Kingdom; Animal Welfare, Moulton College, Northamptonshire, United Kingdom
| | - Jim Warwicker
- Faculty of Life Sciences, The University of Manchester, Manchester, United Kingdom
| | - Mohd Ezuan Bin Khayat
- Faculty of Life Sciences, The University of Manchester, Manchester, United Kingdom; Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Selangor, Malaysia; and
| | | | - Martin C Steward
- Faculty of Life Sciences, The University of Manchester, Manchester, United Kingdom
| | - Leigh W Delbridge
- School of Molecular Bioscience, University of Sydney, New South Wales, Australia
| | - Hee-Chang Mun
- School of Molecular Bioscience, University of Sydney, New South Wales, Australia
| | - Arthur D Conigrave
- School of Molecular Bioscience, University of Sydney, New South Wales, Australia
| | - Donald T Ward
- Faculty of Life Sciences, The University of Manchester, Manchester, United Kingdom;
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Acid-base equilibrium: The best clinical approach☆. COLOMBIAN JOURNAL OF ANESTHESIOLOGY 2015. [DOI: 10.1097/01819236-201543030-00008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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19
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Kim MK, Pyo KH, Hwang YS, Chun HS, Park KH, Ko SH, Chai JY, Shin EH. Effect of citric acid on the acidification of artificial pepsin solution for metacercariae isolation from fish. Vet Parasitol 2013; 198:111-5. [PMID: 23993798 DOI: 10.1016/j.vetpar.2013.08.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Revised: 08/02/2013] [Accepted: 08/05/2013] [Indexed: 10/26/2022]
Abstract
Artificial digestive solution based on pepsin is essential for collecting metacercariae from fish. To promote the enzymatic reactivity of pepsin, the pH of the solution has to be adjusted to pH 1.0-2.0. Hydrochloride (HCl) is usually used for this purpose, but the use of HCl raises safety concerns. The aim of this work was to address the usefulness of citric acid as an alternative for HCl for the acidification of pepsin solution, and to examine its potential to damage metacercariae during in vitro digestion as compared with HCl. Changes in pH after adding 1-9% of citric acid (m/v) to pepsin solution were compared to a 1% HCl (v/v) addition. Digestion of fish muscle was evaluated by measuring released protein concentrations by spectrophotometry. In addition, survival rates of metacercariae in pepsin solution were determined at different citric acid concentrations and were compared that of with 1% HCl. The present study shows that addition of citric acid reduced the pH of pepsin solutions to the required level. Addition of more than 5% of citric acid resulted in the effective digestion of fish muscle over 3h in vitro, and 5% citric acid was less lethal to metacercariae than 1% HCl in pepsin solution. Pepsin solution containing 5% citric acid had digestive capacity superior to pepsin solution containing 1% HCl after 3h incubation with released protein concentrations of 12.0 ng/ml for 5% citric acid and 9.6 ng/ml for 1% HCl. Accordingly, the present study suggests that the addition of 5% citric acid to pepsin solution is a good alternative to 1% HCl in infection studies because citric acid is a stable at room temperature and has a good safety profile. In addition, we suggest that the use of citric acid enables the preparation of commercial digestive solutions for the detection of microorganisms in fish and other vertebrate muscle tissue.
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Affiliation(s)
- Min-Ki Kim
- Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine and Institute of Endemic Diseases, Seoul National University Medical Research Center, Seoul 110-799, South Korea
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Bromine, Chlorine, and Iodine Determination in Soybean and its Products by ICP-MS After Digestion Using Microwave-Induced Combustion. FOOD ANAL METHOD 2012. [DOI: 10.1007/s12161-012-9511-6] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Abstract
What are the basic concepts of acid-base balance, the 2 types of metabolic acidosis, and the common causes of each type of metabolic acidosis?
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Affiliation(s)
- Melissa Beaudet Jones
- Cardiac Intensive Care Unit, Children's National Medical Center, Washington, DC 20010, USA.
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