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Bakhtiyari-Ramezani M, Nohekhan M, Akbari ME, Abbasvandi F, Bayat M, Akbari A, Nasiri M. Comparative assessment of direct and indirect cold atmospheric plasma effects, based on helium and argon, on human glioblastoma: an in vitro and in vivo study. Sci Rep 2024; 14:3578. [PMID: 38347045 PMCID: PMC10861458 DOI: 10.1038/s41598-024-54070-4] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Accepted: 02/08/2024] [Indexed: 02/15/2024] Open
Abstract
Recent research has highlighted the promising potential of cold atmospheric plasma (CAP) in cancer therapy. However, variations in study outcomes are attributed to differences in CAP devices and plasma parameters, which lead to diverse compositions of plasma products, including electrons, charged particles, reactive species, UV light, and heat. This study aimed to evaluate and compare the optimal exposure time, duration, and direction-dependent cellular effects of two CAPs, based on argon and helium gases, on glioblastoma U-87 MG cancer cells and an animal model of GBM. Two plasma jets were used as low-temperature plasma sources in which helium or argon gas was ionized by high voltage (4.5 kV) and frequency (20 kHz). In vitro assessments on human GBM and normal astrocyte cell lines, using MTT assays, flow cytometry analysis, wound healing assays, and immunocytochemistry for Caspase3 and P53 proteins, demonstrated that all studied plasma jets, especially indirect argon CAP, selectively induced apoptosis, hindered tumor cell growth, and inhibited migration. These effects occurred concurrently with increased intracellular levels of reactive oxygen species and decreased total antioxidant capacity in the cells. In vivo results further supported these findings, indicating that single indirect argon and direct helium CAP therapy, equal to high dose Temozolomide treatment, induced tumor cell death in a rat model of GBM. This was concurrent with a reduction in tumor size observed through PET-CT scan imaging and a significant increase in the survival rate. Additionally, there was a decrease in GFAP protein levels, a significant GBM tumor marker, and an increase in P53 protein expression based on immunohistochemical analyses. Furthermore, Ledge beam test analysis revealed general motor function improvement after indirect argon CAP therapy, similar to Temozolomide treatment. Taken together, these results suggest that CAP therapy, using indirect argon and direct helium jets, holds great promise for clinical applications in GBM treatment.
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Affiliation(s)
- Mahdiyeh Bakhtiyari-Ramezani
- Plasma Physics and Nuclear Fusion Research School, Nuclear Science and Technology Research Institute (NSTRI), P.O. Box: 14399-53991, Tehran, Iran.
| | - Mojtaba Nohekhan
- Plasma Physics and Nuclear Fusion Research School, Nuclear Science and Technology Research Institute (NSTRI), P.O. Box: 14399-53991, Tehran, Iran
| | | | - Fereshteh Abbasvandi
- Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- ATMP Department, Breast Cancer Research Center, Motamed Cancer Research Institute, ACECR, Tehran, Iran
| | - Mahdis Bayat
- Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- ATMP Department, Breast Cancer Research Center, Motamed Cancer Research Institute, ACECR, Tehran, Iran
| | - Atieh Akbari
- Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Meysam Nasiri
- Department of Cellular and Molecular Biology, School of Biology, Damghan University, Damghan, Iran
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Ruff PG, Sterodimas A. Enhanced Fat Graft Viability and Remodeling Using a Helium-based Radiofrequency Device to Prepare the Recipient Site. Aesthetic Plast Surg 2024; 48:612-620. [PMID: 38097690 PMCID: PMC10954941 DOI: 10.1007/s00266-023-03749-6] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 10/25/2023] [Indexed: 01/18/2024]
Abstract
BACKGROUND Improvements to autologous fat grafting for soft tissue augmentation are needed to overcome the unpredictable volume retention. Approaches such as fat harvesting and processing, injection technique, preparation of the recipient site, and supplemental biologics are topics of ongoing research. Here, an energy-based device was investigated as a stimulatory tool for recipient site preparation for improving fat graft retention. OBJECTIVE The objective was to measure the stimulatory responses in fat grafts after 4 weeks when using a helium-based radiofrequency device to pretreat the recipient tissue. METHODS Using an autologous fat grafting mouse model, the inguinal fat pad was grafted in a small cranial pocket after either a saline injection alone (control) or a saline injection followed by pretreatment (treated). The fat pad was resected after 4 weeks, sectioned and stained with immunofluorescence markers to investigate tissue remodeling. RESULTS Pretreatment resulted in higher viability of adipocytes, a higher concentration of viable ASCs in areas of adipose tissue regeneration, and localized macrophages in the areas of regeneration when compared to the control. There was no observable difference in vascularity or angiogenesis. The staining for ASCs was higher in the pretreated group in comparison with the control group (5.0% vs. 3.3%, p=0.36) when using a pixel classifier in QuPath in the viable adipose tissue regions. CONCLUSIONS The use of a helium-based radiofrequency device as a pretreatment tool appears to increase the viability of the adipose tissue likely due to higher concentration of ASCs. The apparent increase in viable ASCs may be due to enhanced proliferation or paracrine recruitment of these cells in response to the helium-based radiofrequency treatment. NO LEVEL ASSIGNED This journal requires that authors assign a level of evidence to each submission to which Evidence-Based Medicine rankings are applicable. This excludes Review Articles, Book Reviews, and manuscripts that concern Basic Science, Animal Studies, Cadaver Studies, and Experimental Studies. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 . Bullet List of Important Points: Pretreatment of the fat graft recipient site increases the viability of the adipose tissue after 4 weeks in comparison with the control grafts. The increased viability is likely due to the observed increase in adipose-derived stem cells in the pretreated group. Pretreatment enhanced the adipose tissue remodeling as colocalization of adipose-derived stem cells and macrophages showed an active remodeling, whereas the control group exhibited more necrotic and fibrotic tissue.
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Affiliation(s)
- Paul G Ruff
- West End Plastic Surgery, MedStar Georgetown University, Washington, DC, USA
| | - Aris Sterodimas
- Department of Plastic and Reconstructive Surgery, Metropolitan General Hospital, Athens, Greece.
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Martusevich AK, Surovegina AV, Nazarov VV, Popovicheva AN, Didenko NV. Chemiluminescent Analysis of Oxidative Metabolism in Rat Blood under the Influence of Argon and Helium. Bull Exp Biol Med 2023; 176:50-53. [PMID: 38091138 DOI: 10.1007/s10517-023-05965-1] [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: 10/07/2022] [Indexed: 12/19/2023]
Abstract
We studied the nature of the action of course treatment with argon and helium (1 min, 3 procedures) on the oxidative metabolism in rat blood plasma. The study was performed on 30 Wistar rats divided into 3 groups (n=10 in each group): intact and 2 experimental (treatment of the skin of the back with a stream of argon and helium, respectively). After completion of the treatment course, the intensity of free radical processes, the total antioxidant activity, and malondialdehyde concentration were evaluated in the blood plasma. It was found that argon and helium gas flows provide stimulation of antioxidant systems, but the mechanisms of their effect were different. Treatment with helium did not affect the intensity of free radical processes, but significantly increased the overall antioxidant activity of blood plasma and reduced malondialdehyde concentration in comparison with the effect of argon flow.
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Affiliation(s)
- A K Martusevich
- Privolzhsky Research Medical University, Ministry of Health of the Russian Federation, Nizhny Novgorod, Russia.
| | - A V Surovegina
- Privolzhsky Research Medical University, Ministry of Health of the Russian Federation, Nizhny Novgorod, Russia
| | - V V Nazarov
- Privolzhsky Research Medical University, Ministry of Health of the Russian Federation, Nizhny Novgorod, Russia
| | - A N Popovicheva
- Privolzhsky Research Medical University, Ministry of Health of the Russian Federation, Nizhny Novgorod, Russia
| | - N V Didenko
- Privolzhsky Research Medical University, Ministry of Health of the Russian Federation, Nizhny Novgorod, Russia
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Xu H, Zhu Y, Yu B, Du M, Feng J, Zhuang J, Ma R, Jiao Z. Comparative analysis of helium and air surface micro-discharge plasma treatment on the microbial reduction and quality attributes of beef slices. Meat Sci 2023; 204:109259. [PMID: 37352783 DOI: 10.1016/j.meatsci.2023.109259] [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: 04/03/2023] [Revised: 06/13/2023] [Accepted: 06/16/2023] [Indexed: 06/25/2023]
Abstract
This work aimed to compare the effects of helium and air surface micro-discharge (SMD) plasma on the microbial safety and quality of beef tissues. For the beef tissue model, the concentration and diffusion depth of hydroxyl radical and ozone have different change patterns over plasma treatment time and distance in helium and air SMD plasma. The inactivation efficiency of helium plasma depended on the plasma treatment time and distance, while the inactivation efficiency of air plasma only depended on the treatment time. For the fresh beef slices, air SMD plasma treatment exhibited a higher antimicrobial activity against S. aureus and E. coli than helium SMD plasma treatment (1.5 versus 0.9; 0.9 versus 0.28 log CFU/g at 10 min). However, air SMD plasma treatment caused more adverse effects on beef quality, leading to a smooth surface, extensive lipid oxidation, protein structure damage, low pH and discoloration compared to helium SMD plasma treatment. This work provides valuable guidelines for the working gas choice in the practical application of plasma to meat decontamination.
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Affiliation(s)
- Hangbo Xu
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, College of Agricultural Science, Zhengzhou University, Zhengzhou 450052, People's Republic of China; CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - Yupan Zhu
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, College of Agricultural Science, Zhengzhou University, Zhengzhou 450052, People's Republic of China
| | - Bo Yu
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, College of Agricultural Science, Zhengzhou University, Zhengzhou 450052, People's Republic of China
| | - Mengru Du
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, College of Agricultural Science, Zhengzhou University, Zhengzhou 450052, People's Republic of China; Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, People's Republic of China
| | - Junxia Feng
- Affiliated Huadu Hospital, Southern Medical University (People's Hospital of Huadu District), Guangzhou 510800, People's Republic of China
| | - Jie Zhuang
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, People's Republic of China
| | - Ruonan Ma
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, College of Agricultural Science, Zhengzhou University, Zhengzhou 450052, People's Republic of China; Sanya Institute, Zhengzhou University, Zhengzhou 450001, People's Republic of China.
| | - Zhen Jiao
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, College of Agricultural Science, Zhengzhou University, Zhengzhou 450052, People's Republic of China; Sanya Institute, Zhengzhou University, Zhengzhou 450001, People's Republic of China.
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Štefančík M, Válková L, Veverková J, Weiser A, Dlouhý A, Ryba L, Pávková Goldbergová M. NiTi Alloys Exposure Alters miR-124 Expression in Physiological and Osteoarthritic Osteoblasts. Acta Chir Orthop Traumatol Cech 2022; 89:370-375. [PMID: 36322038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
PURPOSE OF THE STUDY Nitinol (NiTi) is a biomaterial widely used in medicine based on super-elastic and shape memory properties. miR-124 has a key role in inflammatory process, osteoblasts differentiation, and mineralization. The aim of study was evaluating the differences in gene expression of miR-124 of human physiological osteoblasts (HOB) and human osteoarthritic osteoblasts (OSBA) as a response to NiTi alloy in different heat treatments. MATERIAL AND METHODS The cells were cultivated with NiTi discs with/without addition of bacterial lipopolysaccharide (LPS) for 72 hours. MicroRNAs were isolated, underwent reverse transcription and were analyzed by RT-PCR. RESULTS As a response to LPS, HOB overexpressed miR-124, while in OSBA expression change did not occur. Overexpression was also observed in both cell lines as a response to hydrogen and helium treated NiTi discs. HOB expressed significantly higher amount of miR-124 than OSBA as a response to hydrogen treatment of NiTi discs. In addition, hydrogen treatment caused significantly higher expression in HOB than LPS. The combination of NiTi disc and LPS treatment in HOB didn't cause any expression changes. Comparing to LPS-only treatment, the expression in HOB with combination of LPS and alloy was significantly lower. In OSBA, the expression was increased by the combination of LPS and hydrogen disc, in case of helium disc, the expression was decreased. CONCLUSIONS In conclusion, human physiological and osteoarthritic osteoblasts respond to NiTi alloy with both surface (hydrogen and helium atmosphere) treatment by overexpression of miR-124. The effect of LPS as inflammatory modulator suggests the presence of an "anti-inflammatory preconditioning" in osteoarthritic osteoblasts, as physiological osteoblasts overexpression was significantly higher. Key words: nitinol, osteoblast, miR-124, lipopolysaccharide.
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Affiliation(s)
- M Štefančík
- Institute of Pathological Physiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - L Válková
- Institute of Pathological Physiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - J Veverková
- Institute of Pathological Physiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - A Weiser
- Academy of Sciences CR, Institute of Physics of Materials, Brno, Czech Republic
| | - A Dlouhý
- Academy of Sciences CR, Institute of Physics of Materials, Brno, Czech Republic
| | - L Ryba
- Department of Orthopaedics, Faculty of Medicine, Masaryk University, University Hospital, Brno, Czech Republic
| | - M Pávková Goldbergová
- Institute of Pathological Physiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
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Jelemenský M, Kovácsházi C, Ferenczyová K, Hofbauerová M, Kiss B, Pállinger É, Kittel Á, Sayour VN, Görbe A, Pelyhe C, Hambalkó S, Kindernay L, Barančík M, Ferdinandy P, Barteková M, Giricz Z. Helium Conditioning Increases Cardiac Fibroblast Migration Which Effect Is Not Propagated via Soluble Factors or Extracellular Vesicles. Int J Mol Sci 2021; 22:10504. [PMID: 34638845 PMCID: PMC8508629 DOI: 10.3390/ijms221910504] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 09/21/2021] [Accepted: 09/24/2021] [Indexed: 12/18/2022] Open
Abstract
Helium inhalation induces cardioprotection against ischemia/reperfusion injury, the cellular mechanism of which remains not fully elucidated. Extracellular vesicles (EVs) are cell-derived, nano-sized membrane vesicles which play a role in cardioprotective mechanisms, but their function in helium conditioning (HeC) has not been studied so far. We hypothesized that HeC induces fibroblast-mediated cardioprotection via EVs. We isolated neonatal rat cardiac fibroblasts (NRCFs) and exposed them to glucose deprivation and HeC rendered by four cycles of 95% helium + 5% CO2 for 1 h, followed by 1 h under normoxic condition. After 40 h of HeC, NRCF activation was analyzed with a Western blot (WB) and migration assay. From the cell supernatant, medium extracellular vesicles (mEVs) were isolated with differential centrifugation and analyzed with WB and nanoparticle tracking analysis. The supernatant from HeC-treated NRCFs was transferred to naïve NRCFs or immortalized human umbilical vein endothelial cells (HUVEC-TERT2), and a migration and angiogenesis assay was performed. We found that HeC accelerated the migration of NRCFs and did not increase the expression of fibroblast activation markers. HeC tended to decrease mEV secretion of NRCFs, but the supernatant of HeC or the control NRCFs did not accelerate the migration of naïve NRCFs or affect the angiogenic potential of HUVEC-TERT2. In conclusion, HeC may contribute to cardioprotection by increasing fibroblast migration but not by releasing protective mEVs or soluble factors from cardiac fibroblasts.
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Affiliation(s)
- Marek Jelemenský
- Institute for Heart Research, Centre of Experimental Medicine, Slovak Academy of Sciences, 84104 Bratislava, Slovakia; (M.J.); (K.F.); (L.K.); (M.B.)
| | - Csenger Kovácsházi
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, 1089 Budapest, Hungary; (C.K.); (B.K.); (V.N.S.); (A.G.); (C.P.); (S.H.); (P.F.)
| | - Kristína Ferenczyová
- Institute for Heart Research, Centre of Experimental Medicine, Slovak Academy of Sciences, 84104 Bratislava, Slovakia; (M.J.); (K.F.); (L.K.); (M.B.)
| | - Monika Hofbauerová
- Institute of Physics, Slovak Academy of Sciences, Dúbravská Cesta 9, 84511 Bratislava, Slovakia;
- Centre for Advanced Materials Application, Slovak Academy of Sciences, Dúbravská Cesta 9, 84511 Bratislava, Slovakia
| | - Bernadett Kiss
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, 1089 Budapest, Hungary; (C.K.); (B.K.); (V.N.S.); (A.G.); (C.P.); (S.H.); (P.F.)
- MTA-SE System Pharmacology Research Group, Department of Pharmacology and Pharmacotherapy, Semmelweis University, 1089 Budapest, Hungary
| | - Éva Pállinger
- Department of Genetics, Cell and Immunobiology, Semmelweis University, 1089 Budapest, Hungary;
| | - Ágnes Kittel
- Institute of Experimental Medicine, Eötvös Loránd Research Network, 1083 Budapest, Hungary;
| | - Viktor Nabil Sayour
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, 1089 Budapest, Hungary; (C.K.); (B.K.); (V.N.S.); (A.G.); (C.P.); (S.H.); (P.F.)
| | - Anikó Görbe
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, 1089 Budapest, Hungary; (C.K.); (B.K.); (V.N.S.); (A.G.); (C.P.); (S.H.); (P.F.)
- MTA-SE System Pharmacology Research Group, Department of Pharmacology and Pharmacotherapy, Semmelweis University, 1089 Budapest, Hungary
- Pharmahungary Group, 6722 Szeged, Hungary
| | - Csilla Pelyhe
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, 1089 Budapest, Hungary; (C.K.); (B.K.); (V.N.S.); (A.G.); (C.P.); (S.H.); (P.F.)
| | - Szabolcs Hambalkó
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, 1089 Budapest, Hungary; (C.K.); (B.K.); (V.N.S.); (A.G.); (C.P.); (S.H.); (P.F.)
| | - Lucia Kindernay
- Institute for Heart Research, Centre of Experimental Medicine, Slovak Academy of Sciences, 84104 Bratislava, Slovakia; (M.J.); (K.F.); (L.K.); (M.B.)
| | - Miroslav Barančík
- Institute for Heart Research, Centre of Experimental Medicine, Slovak Academy of Sciences, 84104 Bratislava, Slovakia; (M.J.); (K.F.); (L.K.); (M.B.)
| | - Péter Ferdinandy
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, 1089 Budapest, Hungary; (C.K.); (B.K.); (V.N.S.); (A.G.); (C.P.); (S.H.); (P.F.)
- MTA-SE System Pharmacology Research Group, Department of Pharmacology and Pharmacotherapy, Semmelweis University, 1089 Budapest, Hungary
- Pharmahungary Group, 6722 Szeged, Hungary
| | - Monika Barteková
- Institute for Heart Research, Centre of Experimental Medicine, Slovak Academy of Sciences, 84104 Bratislava, Slovakia; (M.J.); (K.F.); (L.K.); (M.B.)
- Institute of Physiology, Faculty of Medicine, Comenius University in Bratislava, 81372 Bratislava, Slovakia
| | - Zoltán Giricz
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, 1089 Budapest, Hungary; (C.K.); (B.K.); (V.N.S.); (A.G.); (C.P.); (S.H.); (P.F.)
- Pharmahungary Group, 6722 Szeged, Hungary
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Baugh JJ, White BA, Biddinger PD, Raja AS, Wittbold KA, Sonis JD, Yun BJ. To solve our new emergency care crisis, let's start with the old one. Am J Emerg Med 2020; 38:2000-2001. [PMID: 33142164 PMCID: PMC7315955 DOI: 10.1016/j.ajem.2020.06.036] [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] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Accepted: 06/14/2020] [Indexed: 11/15/2022] Open
Affiliation(s)
- Joshua J Baugh
- Department of Emergency Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States of America.
| | - Benjamin A White
- Department of Emergency Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States of America.
| | - Paul D Biddinger
- Department of Emergency Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States of America.
| | - Ali S Raja
- Department of Emergency Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States of America.
| | - Kelley A Wittbold
- Department of Emergency Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States of America.
| | - Jonathan D Sonis
- Department of Emergency Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States of America.
| | - Brian J Yun
- Department of Emergency Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States of America.
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Le Nogue D, Lavaur J, Milet A, Ramirez-Gil JF, Katz I, Lemaire M, Farjot G, Hirsch EC, Michel PP. Neuroprotection of dopamine neurons by xenon against low-level excitotoxic insults is not reproduced by other noble gases. J Neural Transm (Vienna) 2020; 127:27-34. [PMID: 31807953 PMCID: PMC6942589 DOI: 10.1007/s00702-019-02112-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Accepted: 11/27/2019] [Indexed: 12/19/2022]
Abstract
Using midbrain cultures, we previously demonstrated that the noble gas xenon is robustly protective for dopamine (DA) neurons exposed to L-trans-pyrrolidine-2,4-dicarboxylate (PDC), an inhibitor of glutamate uptake used to generate sustained, low-level excitotoxic insults. DA cell rescue was observed in conditions where the control atmosphere for cell culture was substituted with a gas mix, comprising the same amount of oxygen (20%) and carbon dioxide (5%) but 75% of xenon instead of nitrogen. In the present study, we first aimed to determine whether DA cell rescue against PDC remains detectable when concentrations of xenon are progressively reduced in the cell culture atmosphere. Besides, we also sought to compare the effect of xenon to that of other noble gases, including helium, neon and krypton. Our results show that the protective effect of xenon for DA neurons was concentration-dependent with an IC50 estimated at about 44%. We also established that none of the other noble gases tested in this study protected DA neurons from PDC-mediated insults. Xenon's effectiveness was most probably due to its unique capacity to block NMDA glutamate receptors. Besides, mathematical modeling of gas diffusion in the culture medium revealed that the concentration reached by xenon at the cell layer level is the highest of all noble gases when neurodegeneration is underway. Altogether, our data suggest that xenon may be of potential therapeutic value in Parkinson disease, a chronic neurodegenerative condition where DA neurons appear vulnerable to slow excitotoxicity.
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Affiliation(s)
- Déborah Le Nogue
- Sorbonne Université, Institut du Cerveau et de la Moelle Epinière (ICM), Inserm U 1127, CNRS, UMR 7225, Paris, France
| | - Jérémie Lavaur
- Sorbonne Université, Institut du Cerveau et de la Moelle Epinière (ICM), Inserm U 1127, CNRS, UMR 7225, Paris, France
| | - Aude Milet
- Air Liquide Santé International, Campus Innovation Paris, Jouy-en-Josas, France
| | | | - Ira Katz
- Air Liquide Santé International, Campus Innovation Paris, Jouy-en-Josas, France
| | - Marc Lemaire
- Air Liquide Santé International, Campus Innovation Paris, Jouy-en-Josas, France
| | - Géraldine Farjot
- Air Liquide Santé International, Campus Innovation Paris, Jouy-en-Josas, France
| | - Etienne C Hirsch
- Sorbonne Université, Institut du Cerveau et de la Moelle Epinière (ICM), Inserm U 1127, CNRS, UMR 7225, Paris, France
| | - Patrick Pierre Michel
- Sorbonne Université, Institut du Cerveau et de la Moelle Epinière (ICM), Inserm U 1127, CNRS, UMR 7225, Paris, France.
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Abstract
The purpose of this study was to investigate the effects of a single bout of heliox non-saturation diving on the cardiovascular system and cognitive function. Ten recreational scuba divers (10 males, ∼35 years old) participated in this study. These subjects made two pool dives within a one-week interval, alternating gases with compressed air (21% O2, 79% N2) and with heliox (21% O2 and 79% He). The depth was to 26 meters over a 20-minute duration. The results showed that heliox diving significantly increased blood O2 saturation by 1.15% and significantly decreased blood lactate levels by ∼57% when compared with air diving (P ≺ 0.05). However, there were no significant differences in resting heart rate, systolic or diastolic pressure, core body blood pressure, and pulse wave velocity between the heliox and air dives. The Stroop test showed that the heliox dive significantly increased cognitive function compared with the air dive in both the simple test (Offtime) and interference test (Ontime) (P ≺ 0.05). It was concluded that the heliox dive increases blood O2 saturation and decreases blood lactate concentration when compared with air dives. These conditions are likely to help divers reduce hypoxia in the water, reduce the risk of loss of consciousness, reduce fatigue and allow them to dive for longer. Heliox diving may also help judgment and risk coping skills in the water due to the improvement of cognitive ability as compared to air breathing dives.
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Affiliation(s)
- Dal-Woo Lee
- Department of Exercise Science, College of Health Science, the University of Suwon, Hwaseong-si, Gyeonggi-do, South Korea
| | - Su-Jeen Jung
- Department of Recreation, Seoil University, Seoul, South Korea
| | - Jeong-Sun Ju
- Department of Exercise Science, College of Health Science, the University of Suwon, Hwaseong-si, Gyeonggi-do, South Korea
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Weber NC, Schilling JM, Warmbrunn MV, Dhanani M, Kerindongo R, Siamwala J, Song Y, Zemljic-Harpf AE, Fannon MJ, Hollmann MW, Preckel B, Roth DM, Patel HH. Helium-Induced Changes in Circulating Caveolin in Mice Suggest a Novel Mechanism of Cardiac Protection. Int J Mol Sci 2019; 20:E2640. [PMID: 31146391 PMCID: PMC6600664 DOI: 10.3390/ijms20112640] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 05/16/2019] [Accepted: 05/20/2019] [Indexed: 12/26/2022] Open
Abstract
The noble gas helium (He) induces cardioprotection in vivo through unknown molecular mechanisms. He can interact with and modify cellular membranes. Caveolae are cholesterol and sphingolipid-enriched invaginations of the plasma-membrane-containing caveolin (Cav) proteins that are critical in protection of the heart. Mice (C57BL/6J) inhaled either He gas or adjusted room air. Functional measurements were performed in the isolated Langendorff perfused heart at 24 h post He inhalation. Electron paramagnetic resonance spectrometry (EPR) of samples was carried out at 24 h post He inhalation. Immunoblotting was used to detect Cav-1/3 expression in whole-heart tissue, exosomes isolated from platelet free plasma (PFP) and membrane fractions. Additionally, transmission electron microscopy analysis of cardiac tissue and serum function and metabolomic analysis were performed. In contrast to cardioprotection observed in in vivo models, the isolated Langendorff perfused heart revealed no protection after He inhalation. However, levels of Cav-1/3 were reduced 24 h after He inhalation in whole-heart tissue, and Cav-3 was increased in exosomes from PFP. Addition of serum to muscle cells in culture or naïve ventricular tissue increased mitochondrial metabolism without increasing reactive oxygen species generation. Primary and lipid metabolites determined potential changes in ceramide by He exposure. In addition to direct effects on myocardium, He likely induces the release of secreted membrane factors enriched in caveolae. Our results suggest a critical role for such circulating factors in He-induced organ protection.
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Affiliation(s)
- Nina C Weber
- Department of Anesthesiology, Laboratory of Experimental Intensive Care and Anesthesiology (L.E.I.C.A.), Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands.
- VA San Diego Healthcare System and Department of Anesthesiology, University of California, San Diego, #125, 3350 La Jolla Village Dr., San Diego, CA 92161, USA.
| | - Jan M Schilling
- VA San Diego Healthcare System and Department of Anesthesiology, University of California, San Diego, #125, 3350 La Jolla Village Dr., San Diego, CA 92161, USA.
| | - Moritz V Warmbrunn
- Department of Anesthesiology, Laboratory of Experimental Intensive Care and Anesthesiology (L.E.I.C.A.), Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands.
- VA San Diego Healthcare System and Department of Anesthesiology, University of California, San Diego, #125, 3350 La Jolla Village Dr., San Diego, CA 92161, USA.
| | - Mehul Dhanani
- VA San Diego Healthcare System and Department of Anesthesiology, University of California, San Diego, #125, 3350 La Jolla Village Dr., San Diego, CA 92161, USA.
| | - Raphaela Kerindongo
- Department of Anesthesiology, Laboratory of Experimental Intensive Care and Anesthesiology (L.E.I.C.A.), Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands.
| | - Jamila Siamwala
- VA San Diego Healthcare System and Department of Anesthesiology, University of California, San Diego, #125, 3350 La Jolla Village Dr., San Diego, CA 92161, USA.
- Brown University and VA Providence, 830 Chalkstone Avenue, Providence, RI 02908, USA.
| | - Young Song
- VA San Diego Healthcare System and Department of Anesthesiology, University of California, San Diego, #125, 3350 La Jolla Village Dr., San Diego, CA 92161, USA.
| | - Alice E Zemljic-Harpf
- VA San Diego Healthcare System and Department of Anesthesiology, University of California, San Diego, #125, 3350 La Jolla Village Dr., San Diego, CA 92161, USA.
| | - McKenzie J Fannon
- VA San Diego Healthcare System and Department of Anesthesiology, University of California, San Diego, #125, 3350 La Jolla Village Dr., San Diego, CA 92161, USA.
| | - Markus W Hollmann
- Department of Anesthesiology, Laboratory of Experimental Intensive Care and Anesthesiology (L.E.I.C.A.), Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands.
| | - Benedikt Preckel
- Department of Anesthesiology, Laboratory of Experimental Intensive Care and Anesthesiology (L.E.I.C.A.), Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands.
| | - David M Roth
- VA San Diego Healthcare System and Department of Anesthesiology, University of California, San Diego, #125, 3350 La Jolla Village Dr., San Diego, CA 92161, USA.
| | - Hemal H Patel
- VA San Diego Healthcare System and Department of Anesthesiology, University of California, San Diego, #125, 3350 La Jolla Village Dr., San Diego, CA 92161, USA.
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11
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Chew MT, Bradley DA, Suzuki M, Matsufuji N, Murakami T, Jones B, Nisbet A. The radiobiological effects of He, C and Ne ions as a function of LET on various glioblastoma cell lines. J Radiat Res 2019; 60:178-188. [PMID: 30624699 PMCID: PMC6430257 DOI: 10.1093/jrr/rry099] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 08/07/2018] [Indexed: 06/09/2023]
Abstract
The effects of the charged ion species 4He, 12C and 20Ne on glioblastoma multiforme (GBM) T98G, U87 and LN18 cell lines were compared with the effects of 200 kVp X-rays (1.7 keV/μm). These cell lines have different genetic profiles. Individual GBM relative biological effectiveness (RBE) was estimated in two ways: the RBE10 at 10% survival fraction and the RBE2Gy after 2 Gy doses. The linear quadratic model radiosensitivity parameters α and β and the α/β ratio of each ion type were determined as a function of LET. Mono-energetic 4He, 12C and 20Ne ions were generated by the Heavy Ion Medical Accelerator at the National Institute of Radiological Sciences in Chiba, Japan. Colony-formation assays were used to evaluate the survival fractions. The LET of the various ions used ranged from 2.3 to 100 keV/μm (covering the depth-dose plateau region to clinically relevant LET at the Bragg peak). For U87 and LN18, the RBE10 increased with LET and peaked at 85 keV/μm, whereas T98G peaked at 100 keV/μm. All three GBM α parameters peaked at 100 keV/μm. There is a statistically significant difference between the three GBM RBE10 values, except at 100 keV/μm (P < 0.01), and a statistically significant difference between the α values of the GBM cell lines, except at 85 and 100 keV/μm. The biological response varied depending on the GBM cell lines and on the ions used.
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Affiliation(s)
- Ming Tsuey Chew
- Sunway University, School of Healthcare and Health Sciences, Centre for Biomedical Physics, No. 5, Jalan Universiti, Bandar Sunway, Petaling Jaya, Selangor, Malaysia
| | - David A Bradley
- Sunway University, School of Healthcare and Health Sciences, Centre for Biomedical Physics, No. 5, Jalan Universiti, Bandar Sunway, Petaling Jaya, Selangor, Malaysia
- Department of Physics, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, UK
| | - Masao Suzuki
- Department of Basic Medical Sciences for Radiation Damages; National Institute of Radiological Sciences (NIRS), National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba-shi, Chiba, Japan
| | - Naruhiro Matsufuji
- Radiation Effect Research Team, Department of Accelerator and Medical Physics, NIRS, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba-shi, Chiba, Japan
| | - Takeshi Murakami
- Heavy-Ion Radiotherapy Promotion Unit & Department of Accelerator and Medical Physics, NIRS, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba-shi, Chiba, Japan
| | - Bleddyn Jones
- Gray Laboratory, CRUK/MRC Oxford, Oncology Institute, University of Oxford, ORCRB-Roosevelt Drive, Oxford, UK
| | - Andrew Nisbet
- Department of Physics, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, UK
- The Department of Medical Physics, Royal Surrey County Hospital, Egerton Road, Guildford, UK
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12
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Borges AC, Lima GDMG, Nishime TMC, Gontijo AVL, Kostov KG, Koga-Ito CY. Amplitude-modulated cold atmospheric pressure plasma jet for treatment of oral candidiasis: In vivo study. PLoS One 2018; 13:e0199832. [PMID: 29949638 PMCID: PMC6021106 DOI: 10.1371/journal.pone.0199832] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 06/14/2018] [Indexed: 01/14/2023] Open
Abstract
The aim of this study was to establish an effective and safe protocol for in vivo oral candidiasis treatment with atmospheric plasma jets. A novel amplitude-modulated cold atmospheric pressure plasma jet (AM-CAPPJ) device, operating with Helium, was tested. In vitro assays with Candida albicans biofilms and Vero cells were performed in order to determine the effective parameters with low cytotoxicity. After the determination of such parameters, the protocol was evaluated in experimentally induced oral candidiasis in mice. AM-CAPPJ could significantly reduce the viability of C. albicans biofilms after 5 minutes of plasma exposure when compared to the non-exposed group (p = 0.0033). After this period of exposure, high viability of Vero cells was maintained (86.33 ± 10.45%). Also, no late effects on these cells were observed after 24 and 48 hours (83.24±15.23% and 88.96±18.65%, respectively). Histological analyses revealed significantly lower occurrence of inflammatory alterations in the AM-CAPPJ group when compared to non-treated and nystatin-treated groups (p < 0.0001). Although no significant differences among the values of CFU/tongue were observed among the non-treated group and the groups treated with AM-CAPPJ or nystatin (p = 0.3201), histological analyses revealed marked reduction in candidal tissue invasion. In conclusion, these results point out to a clinical applicability of this protocol, due to the simultaneous anti-inflammatory and inhibitory effects of AM-CAPPJ with low cytotoxicity.
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Affiliation(s)
- Aline Chiodi Borges
- Department of Environmental Engineering and Oral Biopathology Graduate Program, Institute of Science and Technology, São Paulo State University (UNESP), São José dos Campos, Brazil
| | - Gabriela de Morais Gouvêa Lima
- Department of Environmental Engineering and Oral Biopathology Graduate Program, Institute of Science and Technology, São Paulo State University (UNESP), São José dos Campos, Brazil
| | | | - Aline Vidal Lacerda Gontijo
- Department of Environmental Engineering and Oral Biopathology Graduate Program, Institute of Science and Technology, São Paulo State University (UNESP), São José dos Campos, Brazil
| | - Konstantin Georgiev Kostov
- Department of Chemistry and Physics, Guaratinguetá Faculty of Engineering, São Paulo State University (UNESP), Guaratinguetá, Brazil
| | - Cristiane Yumi Koga-Ito
- Department of Environmental Engineering and Oral Biopathology Graduate Program, Institute of Science and Technology, São Paulo State University (UNESP), São José dos Campos, Brazil
- * E-mail:
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13
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Smit KF, Konkel M, Kerindongo R, Landau MA, Zuurbier CJ, Hollmann MW, Preckel B, Nieuwland R, Albrecht M, Weber NC. Helium alters the cytoskeleton and decreases permeability in endothelial cells cultured in vitro through a pathway involving Caveolin-1. Sci Rep 2018; 8:4768. [PMID: 29555979 PMCID: PMC5859123 DOI: 10.1038/s41598-018-23030-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 03/05/2018] [Indexed: 01/31/2023] Open
Abstract
Caveolins are involved in anaesthetic-induced cardioprotection. Actin filaments are located in close connection to Caveolins in the plasma membrane. We hypothesised that helium might affect the cytoskeleton and induce secretion of Caveolin. HCAEC, HUVEC and Cav-1 siRNA transfected HUVEC were exposed for 20 minutes to either helium (5% CO2, 25% O2, 70% He) or control gas (5% CO2, 25% O2, 70% N2). Cells and supernatants were collected for infrared Western blot analysis, immunofluorescence staining, nanoparticle tracking analysis and permeability measurements. Helium treatment increased the cortical localisation of F-actin fibers in HUVEC. After 6 hours, helium decreased cellular Caveolin-1 (Cav-1) levels and increased Cav-1 levels in the supernatant. Cell permeability was decreased 6 and 12 hours after helium treatment, and increased levels of Vascular Endothelial - Cadherin (VE-Cadherin) and Connexin 43 (Cx43) were observed. Transfection with Cav-1 siRNA abolished the effects of helium treatment on VE-Cadherin, Cx43 levels and permeability. Supernatant obtained after helium treatment reduced cellular permeability in remote HUVEC, indicating that increased levels of Cav-1 are responsible for the observed alterations. These findings suggest that Cav-1 is secreted after helium exposure in vitro, altering the cytoskeleton and increasing VE-Cadherin and Cx43 expression resulting in decreased permeability in HUVEC.
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Affiliation(s)
- Kirsten F Smit
- Department of Anaesthesiology, Laboratory of Experimental Intensive Care and Anaesthesiology (L.E.I.C.A), Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
| | - Moritz Konkel
- Department of Anaesthesiology, Laboratory of Experimental Intensive Care and Anaesthesiology (L.E.I.C.A), Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
- Department of Anaesthesiology, UKSH, Campus Kiel, Kiel, Germany
| | - Raphaela Kerindongo
- Department of Anaesthesiology, Laboratory of Experimental Intensive Care and Anaesthesiology (L.E.I.C.A), Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
| | - Maximilian A Landau
- Department of Anaesthesiology, Laboratory of Experimental Intensive Care and Anaesthesiology (L.E.I.C.A), Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
- Department of Anaesthesiology, UKSH, Campus Kiel, Kiel, Germany
| | - Coert J Zuurbier
- Department of Anaesthesiology, Laboratory of Experimental Intensive Care and Anaesthesiology (L.E.I.C.A), Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
| | - Markus W Hollmann
- Department of Anaesthesiology, Laboratory of Experimental Intensive Care and Anaesthesiology (L.E.I.C.A), Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
| | - Benedikt Preckel
- Department of Anaesthesiology, Laboratory of Experimental Intensive Care and Anaesthesiology (L.E.I.C.A), Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
| | - Rienk Nieuwland
- Laboratory of Experimental Clinical Chemistry, and Vesicle Observation Centre, Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
| | - Martin Albrecht
- Department of Anaesthesiology, UKSH, Campus Kiel, Kiel, Germany
| | - Nina C Weber
- Department of Anaesthesiology, Laboratory of Experimental Intensive Care and Anaesthesiology (L.E.I.C.A), Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands.
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14
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Wu X, Shao C, Zhang L, Tu J, Xu H, Lin Z, Xu S, Yu B, Tang Y, Li S. The effect of helium-oxygen-assisted mechanical ventilation on chronic obstructive pulmonary disease exacerbation: A systemic review and meta-analysis. Clin Respir J 2018; 12:1219-1227. [PMID: 28544519 DOI: 10.1111/crj.12654] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 04/22/2016] [Revised: 09/29/2016] [Accepted: 05/09/2017] [Indexed: 11/28/2022]
Abstract
BACKGROUND Chronic obstructive pulmonary disease (COPD) is often accompanied by acute exacerbations. Patients of COPD exacerbation suffering from respiratory failure often need the support of mechanical ventilation. Helium-oxygen can be used to reduce airway resistance during mechanical ventilation. The aim of this study is to evaluate the effect of helium-oxygen-assisted mechanical ventilation on COPD exacerbation through a meta-analysis. METHODS A comprehensive literature search through databases of Pub Med (1966∼2016), Ovid MEDLINE (1965∼2016), Cochrane EBM (1991∼2016), EMBASE (1974∼2016) and Ovid MEDLINE was performed to identify associated studies. Randomized clinical trials met our inclusion criteria that focus on helium-oxygen-assisted mechanical ventilation on COPD exacerbation were included. The quality of the papers was evaluated after inclusion and information was extracted for meta-analysis. RESULTS Six articles and 392 patients were included in total. Meta-analysis revealed that helium-oxygen-assisted mechanical ventilation reduced Borg dyspnea scale and increased arterial PH compared with air-oxygen. No statistically significant difference was observed between helium-oxygen and air-oxygen as regards to WOB, PaCO2 , OI, tracheal intubation rates and mortality within hospital. CONCLUSIONS Our study suggests helium-oxygen-assisted mechanical ventilation can help to reduce Borg dyspnea scale. In terms of the tiny change of PH, its clinical benefit is negligible. There is no conclusive evidence indicating the beneficial effect of helium-oxygen-assisted mechanical ventilation on clinical outcomes or prognosis of COPD exacerbation.
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Affiliation(s)
- Xu Wu
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
- Clinical Center for Sleep Breathing Disorder and Snoring, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Chuan Shao
- Department of Respiratory Medicine, Ningbo Medical Center Lihuili Eastern Hospital, Taipei Medical University Ningbo Medical Center, Ningbo, 315040, China
| | - Liang Zhang
- Department of Respiratory Medicine, Ningbo Medical Center Lihuili Eastern Hospital, Taipei Medical University Ningbo Medical Center, Ningbo, 315040, China
| | - Jinjing Tu
- Department of Respiratory Medicine, Ningbo Medical Center Lihuili Eastern Hospital, Taipei Medical University Ningbo Medical Center, Ningbo, 315040, China
| | - Hui Xu
- Department of Respiratory Medicine, Ningbo Medical Center Lihuili Eastern Hospital, Taipei Medical University Ningbo Medical Center, Ningbo, 315040, China
| | - Zhihui Lin
- Department of Respiratory Medicine, Ningbo Medical Center Lihuili Eastern Hospital, Taipei Medical University Ningbo Medical Center, Ningbo, 315040, China
| | - Shuguang Xu
- Department of Respiratory Medicine, Ningbo Medical Center Lihuili Eastern Hospital, Taipei Medical University Ningbo Medical Center, Ningbo, 315040, China
| | - Biyun Yu
- Department of Respiratory Medicine, Ningbo Medical Center Lihuili Eastern Hospital, Taipei Medical University Ningbo Medical Center, Ningbo, 315040, China
| | - Yaodong Tang
- Department of Respiratory Medicine, Ningbo Medical Center Lihuili Eastern Hospital, Taipei Medical University Ningbo Medical Center, Ningbo, 315040, China
| | - Shanqun Li
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
- Clinical Center for Sleep Breathing Disorder and Snoring, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
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15
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Dezest M, Bulteau AL, Quinton D, Chavatte L, Le Bechec M, Cambus JP, Arbault S, Nègre-Salvayre A, Clément F, Cousty S. Oxidative modification and electrochemical inactivation of Escherichia coli upon cold atmospheric pressure plasma exposure. PLoS One 2017; 12:e0173618. [PMID: 28358809 PMCID: PMC5373509 DOI: 10.1371/journal.pone.0173618] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2016] [Accepted: 02/23/2017] [Indexed: 11/19/2022] Open
Abstract
Cold atmospheric pressure plasmas (CAPPs) are known to have bactericidal effects but the mechanism of their interaction with microorganisms remains poorly understood. In this study the bacteria Escherichia coli were used as a model and were exposed to CAPPs. Different gas compositions, helium with or without adjunctions of nitrogen or oxygen, were used. Our results indicated that CAPP induced bacterial death at decontamination levels depend on the duration, post-treatment storage and the gas mixture composition used for the treatment. The plasma containing O2 in the feeding gas was the most aggressive and showed faster bactericidal effects. Structural modifications of treated bacteria were observed, especially significant was membrane leakage and morphological changes. Oxidative stress caused by plasma treatment led to significant damage of E. coli. Biochemical analyses of bacterial macromolecules indicated massive intracellular protein oxidation. However, reactive oxygen and nitrogen species (RONS) are not the only actors involved in E. coli's death, electrical field and charged particles could play a significant role especially for He-O2 CAPP.
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Affiliation(s)
- Marlène Dezest
- UMR 5254, IPREM, Université de Pau et des pays de l’Adour, Pau, France
| | - Anne-Laure Bulteau
- UMR 5254, IPREM, Université de Pau et des pays de l’Adour, Pau, France
- * E-mail:
| | - Damien Quinton
- NSysA group, ENSCBP, CNRS UMR 5255, ISM, Université de Bordeaux, Pessac, France
| | - Laurent Chavatte
- UMR 5254, IPREM, Université de Pau et des pays de l’Adour, Pau, France
| | - Mickael Le Bechec
- UMR 5254, IPREM, Université de Pau et des pays de l’Adour, Pau, France
| | | | - Stéphane Arbault
- NSysA group, ENSCBP, CNRS UMR 5255, ISM, Université de Bordeaux, Pessac, France
| | | | - Franck Clément
- UMR 5254, IPREM, Université de Pau et des pays de l’Adour, Pau, France
| | - Sarah Cousty
- Faculté de Chirurgie Dentaire de Toulouse, centre Hospitalier Universitaire de Toulouse, Université Paul Sabatier, Toulouse, France
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16
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Bhullar J, Bhopale VM, Yang M, Sethuraman K, Thom SR. Microparticle formation by platelets exposed to high gas pressures - An oxidative stress response. Free Radic Biol Med 2016; 101:154-162. [PMID: 27751909 DOI: 10.1016/j.freeradbiomed.2016.10.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [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: 06/30/2016] [Revised: 10/10/2016] [Accepted: 10/13/2016] [Indexed: 02/05/2023]
Abstract
This investigation explored the mechanism for microparticles (MPs) production by human and murine platelets exposed to high pressures of inert gases. Results demonstrate that MPs production occurs via an oxidative stress response in a dose-dependent manner and follows the potency series N2>Ar>He. Gases with higher van der Waals volumes or polarizability such as SF6 and N2O, or hydrostatic pressure, do not cause MPs production. Singlet O2 is generated by N2, Ar and He, which is linked to NADPH oxidase (NOX) activity. Progression of oxidative stress involves activation of nitric oxide synthase (NOS) leading to S-nitrosylation of cytosolic actin. Exposure to gases enhances actin filament turnover and associations between short actin filaments, NOS, vasodilator-stimulated phosphoprotein (VASP), focal adhesion kinase (FAK) and Rac1. Inhibition of NOS or NOX by chemical inhibitors or using platelets from mice lacking NOS2 or the gp91phox component of NOX diminish generation of reactive species, enhanced actin polymerization and MP generation by high pressure gases. We conclude that by initiating a sequence of progressive oxidative stress responses high pressure gases cause platelets to generate MPs.
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Affiliation(s)
- Jasjeet Bhullar
- Department of Emergency Medicine, University of Maryland, Baltimore, MD 21201, United States
| | - Veena M Bhopale
- Department of Emergency Medicine, University of Maryland, Baltimore, MD 21201, United States
| | - Ming Yang
- Department of Emergency Medicine, University of Maryland, Baltimore, MD 21201, United States
| | - Kinjal Sethuraman
- Department of Emergency Medicine, University of Maryland, Baltimore, MD 21201, United States
| | - Stephen R Thom
- Department of Emergency Medicine, University of Maryland, Baltimore, MD 21201, United States.
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17
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Volotskova O, Dubrovsky L, Keidar M, Bukrinsky M. Cold Atmospheric Plasma Inhibits HIV-1 Replication in Macrophages by Targeting Both the Virus and the Cells. PLoS One 2016; 11:e0165322. [PMID: 27783659 PMCID: PMC5081187 DOI: 10.1371/journal.pone.0165322] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 10/10/2016] [Indexed: 01/12/2023] Open
Abstract
Cold atmospheric plasma (CAP) is a specific type of partially ionized gas that is less than 104°F at the point of application. It was recently shown that CAP can be used for decontamination and sterilization, as well as anti-cancer treatment. Here, we investigated the effects of CAP on HIV-1 replication in monocyte-derived macrophages (MDM). We demonstrate that pre-treatment of MDM with CAP reduced levels of CD4 and CCR5, inhibiting virus-cell fusion, viral reverse transcription and integration. In addition, CAP pre-treatment affected cellular factors required for post-entry events, as replication of VSV-G-pseudotyped HIV-1, which by-passes HIV receptor-mediated fusion at the plasma membrane during entry, was also inhibited. Interestingly, virus particles produced by CAP-treated cells had reduced infectivity, suggesting that the inhibitory effect of CAP extended to the second cycle of infection. These results demonstrate that anti-HIV activity of CAP involves the effects on target cells and the virus, and suggest that CAP may be considered for potential application as an anti-HIV treatment.
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Affiliation(s)
- Olga Volotskova
- Department of Mechanical and Aerospace Engineering, The George Washington University, SEAS, Washington, DC, United States of America
| | - Larisa Dubrovsky
- Department of Microbiology, Immunology & Tropical Medicine, The George Washington University, SMHS, Washington, DC, United States of America
| | - Michael Keidar
- Department of Mechanical and Aerospace Engineering, The George Washington University, SEAS, Washington, DC, United States of America
| | - Michael Bukrinsky
- Department of Microbiology, Immunology & Tropical Medicine, The George Washington University, SMHS, Washington, DC, United States of America
- * E-mail:
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18
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Ling L, Jiafeng J, Jiangang L, Minchong S, Xin H, Hanliang S, Yuanhua D. Effects of cold plasma treatment on seed germination and seedling growth of soybean. Sci Rep 2014; 4:5859. [PMID: 25080862 PMCID: PMC4118186 DOI: 10.1038/srep05859] [Citation(s) in RCA: 109] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Accepted: 06/18/2014] [Indexed: 11/08/2022] Open
Abstract
Effects of cold plasma treatment on soybean (Glycine max L. Merr cv. Zhongdou 40) seed germination and seedling growth were studied. Seeds were pre-treated with 0, 60, 80, 100 and 120 W of cold plasma for 15 s. Results showed that plasma treatments had positive effects on seed germination and seedling growth, and treatment of 80 W had the highest stimulatory effect. Germination and vigor indices significantly increased by 14.66% and 63.33%, respectively. Seed's water uptake improved by 14.03%, and apparent contact angle decreased by 26.19%. Characteristics of seedling growth, including shoot length, shoot dry weight, root length and root dry weight, significantly increased by 13.77%, 21.95%, 21.42% and 27.51%, respectively, compared with control. The seed reserve utilization, including weight of the mobilized seed reserve, seed reserve depletion percentage and seed reserve utilization efficiency significantly improved by cold plasma treatment. In addition, soluble sugar and protein contents were 16.51% and 25.08% higher than those of the control. Compared to a 21.95% increase in shoot weight, the root weight increased by 27.51% after treatment, indicating that plasma treatment had a greater stimulatory effect on plant roots. These results indicated that cold plasma treatment might promote the growth even yield of soybean.
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Affiliation(s)
- Li Ling
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- These authors contributed equally to this work
| | - Jiang Jiafeng
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- These authors contributed equally to this work
| | - Li Jiangang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Shen Minchong
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - He Xin
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shao Hanliang
- Changzhou Zhongke Changtai Plasma Technology Corporation, Changzhou 213022, China
| | - Dong Yuanhua
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
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Fang M, Jin L, Zhang C, Tan Y, Jiang P, Ge N, Xing X. Rapid mutation of Spirulina platensis by a new mutagenesis system of atmospheric and room temperature plasmas (ARTP) and generation of a mutant library with diverse phenotypes. PLoS One 2013; 8:e77046. [PMID: 24319517 PMCID: PMC3851916 DOI: 10.1371/journal.pone.0077046] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2013] [Accepted: 08/24/2013] [Indexed: 11/19/2022] Open
Abstract
In this paper, we aimed to improve the carbohydrate productivity of Spirulina platensis by generating mutants with increased carbohydrate content and growth rate. ARTP was used as a new mutagenesis tool to generate a mutant library of S. platensis with diverse phenotypes. Protocol for rapid mutation of S. platensis by 60 s treatment with helium driven ARTP and high throughput screening method of the mutants using the 96-well microplate and microplate reader was established. A mutant library of 62 mutants was then constructed and ideal mutants were selected out. The characteristics of the mutants after the mutagenesis inclined to be stable after around 9(th) subculture, where the total mutation frequency and positive mutation frequency in terms of specific growth rate reached 45% and 25%, respectively. The mutants in mutant library showed diverse phenotypes in terms of cell growth rate, carbohydrate content and flocculation intensity. The positive mutation frequency in terms of cellular carbohydrate content with the increase by more than 20% percent than the wild strain was 32.3%. Compared with the wild strain, the representative mutants 3-A10 and 3-B2 showed 40.3% and 78.0% increase in carbohydrate content, respectively, while the mutant 4-B3 showed 10.5% increase in specific growth rate. The carbohydrate contents of the representative mutants were stable during different subcultures, indicating high genetic stability. ARTP was demonstrated to be an effective and non-GMO mutagenesis tool to generate the mutant library for multicellular microalgae.
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Affiliation(s)
- Mingyue Fang
- Key Laboratory for Industrial Biocatalysis, Ministry of Education, Department of Chemical Engineering, Tsinghua University, Beijing, China
| | - Lihua Jin
- Key Laboratory for Industrial Biocatalysis, Ministry of Education, Department of Chemical Engineering, Tsinghua University, Beijing, China
- Colloge of bioengineering, Beijing Polytechnic, Beijing, China
| | - Chong Zhang
- Key Laboratory for Industrial Biocatalysis, Ministry of Education, Department of Chemical Engineering, Tsinghua University, Beijing, China
| | - Yinyee Tan
- Key Laboratory for Industrial Biocatalysis, Ministry of Education, Department of Chemical Engineering, Tsinghua University, Beijing, China
| | - Peixia Jiang
- Key Laboratory for Industrial Biocatalysis, Ministry of Education, Department of Chemical Engineering, Tsinghua University, Beijing, China
| | - Nan Ge
- Department of Engineering Physics, Tsinghua University, Beijing, China
| | - Xinhui Xing
- Key Laboratory for Industrial Biocatalysis, Ministry of Education, Department of Chemical Engineering, Tsinghua University, Beijing, China
- * E-mail: (HL); (XH)
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García-Alcantara E, López-Callejas R, Morales-Ramírez PR, Peña-Eguiluz R, Fajardo-Muñoz R, Mercado-Cabrera A, Barocio SR, Valencia-Alvarado R, Rodríguez-Méndez BG, Muñoz-Castro AE, de la Piedad-Beneitez A, Rojas-Olmedo IA. Accelerated mice skin acute wound healing in vivo by combined treatment of argon and helium plasma needle. Arch Med Res 2013; 44:169-77. [PMID: 23506720 DOI: 10.1016/j.arcmed.2013.02.001] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Accepted: 01/29/2013] [Indexed: 11/18/2022]
Abstract
BACKGROUND AND AIMS The efficacy of a direct application of plasma needle to in vivo wound healing was experimentally studied in mice. This kind of plasma has achieved considerable success in blood coagulation and tissue restoration in mice. In the development of the present study, an argon plasma needle was chosen for coagulation purposes, whereas for healing purposes, a helium plasma needle was used. METHODS Treatment was applied with a plasma needle produced by argon and helium to a wound induced in laboratory mice. Tissue regeneration was carried out by three argon plasma treatments with 0.5 SLPM flow for 1 min and three treatments of helium with 1.5 SLPM flow. Intervals between each treatment were 5 min and 60 min for argon and helium plasmas, respectively, thus completing a total treatment time of 180 min. Histological sections were performed to corroborate the internal bleeding and tissue regeneration. RESULTS After three treatments with argon plasma, the blood produced in the wound was coagulated and protein material appeared. By means of treatment with helium plasma, an approach of the wound edges was produced until the conclusion thereof. These results were corroborated histologically. CONCLUSIONS This type of acceleration during the skin wound healing process can be attributed to the formation of reactive species such as NO, which were increased in the helium plasma needle with respect to the argon plasma needle.
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Affiliation(s)
- Elizabeth García-Alcantara
- Plasma Physics Laboratory and Cell Radiobiology Laboratory, Instituto Nacional de Investigaciones Nucleares, México D.F., Mexico
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Krasnovskiĭ AL, Grigor'ev SP, Alekhin AI, Potapov VN. [Application of heated oxygen-helium mixture for combined treatment of community-acquired pneumonia]. Klin Med (Mosk) 2013; 91:38-41. [PMID: 24159785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Community-acquired pneumonia (CAP) is the commonest infectious disease characterized by the high lethality rate. The aim of this work was to estimate the efficacy of introducing inhalation of heated oxygen-helium mixture (thermoheliox) into standard therapy of CAP. The study included 50 patients with moderately severe CAP 25 patients of group 1 were given standard therapy plus thermoheliox, those of group 2 were treated by standard method. Group 1 showed faster disappearance of symptoms and physical signs including inflammatory changes (chemiluminescence of whole blood) and cardiac rhythm variability as well as more complete recovery of pneumonia upon X-ray examination. It is concluded that thermoheliox is an effective agent for pathogenetic therapy of community-acquired pneumonia.
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Maslova MN, Klimova VK. [Hyperbaria and stress]. Zh Evol Biokhim Fiziol 2012; 48:461-466. [PMID: 23136754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Causes of the appearance of stress-reaction at action of hyperbaira on the organism were studied on rats. It has been established that at the 5-h action of gas mixtures (oxygen-nitrogen and oxygen-argon) under pressure 0.35 and 0.5 MPa and partial pressure of oxygen 0.02-0.03 MPa in the chamber of the volume of 300 1 there is obviously manifested stress confirmed by the corresponding markers. The appearance of stress was connected with the gas mixture density that amounts to 6 g/l, which interferes with respiration mechanically. Use of helium at the same pressure of the gas mixture did not cause stress, as its pressure did not exceed the normal air density. On the other hand, use for respiratory mixtures of elegas (SF6) with density of 6 g/l at the normal pressure produced obvious stress. No difference was revealed in action of nitrogen, argon or elegas at equal density. Thus, use of high pressures needs light gases (helium, hydrogen, neon) that have low density.
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Huhn R, Weber NC, Preckel B, Schlack W, Bauer I, Hollmann MW, Heinen A. Age-related loss of cardiac preconditioning: impact of protein kinase A. Exp Gerontol 2011; 47:116-21. [PMID: 22100641 DOI: 10.1016/j.exger.2011.11.003] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2011] [Revised: 10/10/2011] [Accepted: 11/07/2011] [Indexed: 11/17/2022]
Abstract
Helium induces preconditioning (He-PC) by mitochondrial calcium-sensitive potassium (mK(Ca)) channel-activation, but this effect is lost in the aged myocardium. Both, the upstream signalling pathway of He-PC and the underlying mechanisms for an age-related loss of preconditioning are unknown. A possible candidate as upstream regulator of mK(Ca) channels is protein kinase A (PKA). We investigated whether 1) regulation of PKA is involved in He-PC and 2) regulation of PKA is age-dependent. Young (2-3 months) and aged (22-24 months) Wistar rats were randomised to eight groups (each n=8). All animals underwent 25 min regional myocardial ischemia and 120 min reperfusion. Control (Con, Age Con) animals were not further treated. Young rats inhaled 70% helium for 3×5 min (He-PC). The PKA-blocker H-89 (10 μg/kg) was administered with and without helium (He-PC+H-89, H-89). Furthermore, we tested the effect of direct activation of mK(Ca) channels with NS1619. The adenylyl cyclase activator forskolin (For) was administered in young (300 μg/kg) and aged animals (300 and 1000 μg/kg). He-PC reduced infarct size from 60±4% (Con) to 37±10% (p<0.05). Infarct size reduction was completely abolished by H-89 (58±5%; p<0.05), but H-89 alone had no effect (57±2%). NS1619 reduced infarct size in the same concentration in both, young and aged rats (35±6%; p<0.05 vs. Con and 34±8%; p<0.05 vs. Age Con). Forskolin in a concentration of 300 μg/kg reduced infarct size in young (37±6%; p<0.05) but not in aged rats (48±13%; n.s.). In contrast, 1000 μg/kg Forskolin reduced infarct size also in aged rats (28±3%; p<0.05). He-PC is mediated by activation of PKA. Alterations in PKA regulation might be an underlying mechanism for the age-dependent loss of preconditioning.
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Affiliation(s)
- Ragnar Huhn
- Department of Anaesthesiology, University Hospital Duesseldorf, Moorenstrasse 5, 40225 Duesseldorf, Germany.
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Rostain JC, Lavoute C, Risso JJ, Vallée N, Weiss M. A review of recent neurochemical data on inert gas narcosis. Undersea Hyperb Med 2011; 38:49-59. [PMID: 21384763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Nitrogen narcosis occurs in humans at around 0.4 MPa (4 ATA). Hydrogen narcosis occurs between 2.6 and 3.0 MPa. In rats, nitrogen disturbances occur from 1 MPa and a loss of righting reflex around 4 MPa. Neurochemical studies in striatum of rats with nitrogen at 3 MPa (75% of anesthesia threshold) with differential pulse voltammetry have demonstrated a decrease in dopamine (DA) release by neurons originated from the substantia nigra pars compacta (SNc). Such a decrease is found also with compressed argon, which is more narcotic than nitrogen and with the anesthetic gas nitrous oxide. Inversely, compressed helium with its very low narcotic potency induces DA increase. Microdialysis studies in the striatum have indicated that nitrogen also induces a decrease of glutamate concentration. Nitrogen pressure did not modify NMDA glutamate receptor activities in SNc or striatum but enhanced GABAA receptors activities in SNc. Repetitive exposures to nitrogen narcosis suppressed the DA decrease and induced an increase. This fact and the lack of improvement of motor disturbances did not support the hypothesis of a physiological adaptation. The desensitization of the GABAA receptors on DA cells during recurrent exposures and the parallel long-lasting decrease of glutamate coupled to the increase in NMDA receptor sensitivity suggest a nitrogen neurotoxicity or addiction induced by recurrent exposures. The differential changes produced by inert gases indifferent neurotransmitter receptors would support the binding protein theory.
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Affiliation(s)
- J C Rostain
- Université de la Méditerranée et IMNSSA UMR-MD2, Physiologie et Physiopathologie en Condition d'Oxygénation Extrême, Faculté de Médecine Nord, Institut de Neuroscience Jean Roche, 13015 Marseille, France.
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Chen S, Guo SX, Hong Y, Zhang JM. [Advances in research on neuroprotective effects of inert gas]. Zhejiang Da Xue Xue Bao Yi Xue Ban 2011; 40:101-106. [PMID: 21319382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Inert gas is a group of rare gases with very low activity, their application in medical field has increasingly drawn attentions. It is known that inert gases helium, xenon and argon have protective effects on nervous system and the mechanisms are related to eradicating free radicals, anti-inflammation, suppressing apoptosis, influencing ion channels and so on. Further study on the neuroprotective effect of inert gas will shed light on a new approach to treat neurological diseases.
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Affiliation(s)
- Sheng Chen
- Department of Neurosurgery, The Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310009, China
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Laveneziana P, Valli G, Onorati P, Paoletti P, Ferrazza AM, Palange P. Effect of heliox on heart rate kinetics and dynamic hyperinflation during high-intensity exercise in COPD. Eur J Appl Physiol 2010; 111:225-34. [PMID: 20852881 DOI: 10.1007/s00421-010-1643-z] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/26/2010] [Indexed: 11/28/2022]
Abstract
Respiratory mechanical abnormalities in patients with chronic obstructive pulmonary disease (COPD) may impair cardiodynamic responses and slow down heart rate (HR) kinetics compared with normal resulting in reduced convective oxygen delivery during exercise. We reasoned that heliox breathing (79% helium-21% oxygen) and the attendant reduction of operating lung volumes should accelerate HR kinetics in the transition from rest to high-intensity exercise. Eleven male ambulatory patients with clinically stable COPD undertook constant work-rate cycle testing at 80% of each individuals' maximum work capacity while breathing room air (RA) or heliox (HX), randomly. Mean response time (MRT) for HR and dynamic end-expiratory lung volume (EELV) were measured. Resting EELV was not affected by HX breathing, while exercise EELV decreased significantly by 0.23 L at isotime during HX breathing compared with RA. During HX breathing, MRT for HR significantly accelerated (p = 0.002) by an average of 20 s (i.e., 17%). Speeded MRT for HR correlated with indices of reduced lung hyperinflation, such as EELV at isotime (r = 0.88, p = 0.03), and with improved exercise endurance time (r = -0.64, p = 0.03). The results confirm that HX-induced reduction of dynamic lung hyperinflation is associated with consistent improvement in indices of cardio-circulatory function such as HR kinetics in the rest-to-exercise transition in COPD patients.
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Affiliation(s)
- Pierantonio Laveneziana
- Laboratoire de Physio-Pathologie Respiratoire, Equipe de Recherche ER 10, Faculté de Médecine Pierre et Marie Curie (site Pitié-Salpêtrière), Université Paris VI, Paris, France.
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San Luis Calo E, Ares Rodríguez X, Blanco Casais N, Masid Gómez A, Cortiñas Díaz J, Alvarez Escudero J. [Utility of heliox during treatment of upper airway obstruction secondary to bilateral vocal cord paralysis after thyroidectomy]. ACTA ACUST UNITED AC 2009; 56:319-21. [PMID: 19580136 DOI: 10.1016/s0034-9356(09)70402-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Helium is a noble gas whose low density decreases airway resistance. This property is utilized when a mixture of helium and oxygen (heliox) is employed in certain clinical situations, particularly in the context of airway obstruction. We report the case of a woman with severe upper airway obstruction due to bilateral vocal cord paralysis after thyroidectomy. Heliox was used temporarily to reduce respiratory effort and avoid the need for tracheal intubation while the obstruction was being treated with antiinflammatory drugs.
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Affiliation(s)
- E San Luis Calo
- Servicio de Anestesiología y Reanimación, Hospital Clínico Universitario de Santiago de Compostela.
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Jawad N, Rizvi M, Gu J, Adeyi O, Tao G, Maze M, Ma D. Neuroprotection (and lack of neuroprotection) afforded by a series of noble gases in an in vitro model of neuronal injury. Neurosci Lett 2009; 460:232-6. [PMID: 19500647 DOI: 10.1016/j.neulet.2009.05.069] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2009] [Revised: 05/17/2009] [Accepted: 05/27/2009] [Indexed: 11/30/2022]
Abstract
Xenon-induced neuroprotection has been well studied both in vivo and in vitro. In this study, the neuroprotective properties of the other noble gases, namely, krypton, argon, neon and helium, were explored in an in vitro model of neuronal injury. Pure neuronal cultures, derived from foetal BALB/c mice cortices, were provoked into injury by oxygen and glucose deprivation (OGD). Cultures were exposed to either nitrogen hypoxia or noble gas hypoxia in balanced salt solution devoid of glucose for 90min. The cultures were allowed to recover in normal culture medium for a further 24h in nitrogen or noble gas. The effect of noble gases on cell reducing ability in the absence of OGD was also investigated. Cell reducing ability was quantified via an MTT assay and expressed as a ratio of the control. The OGD caused a reduction in cell reducing ability to 0.56+/-0.04 of the control in the absence of noble gas (p<0.001). Like xenon (0.92+/-0.10; p<0.001), neuroprotection was afforded by argon (0.71+/-0.05; p<0.01). Neon and krypton did not have a protective effect under our experimental conditions. Helium had a detrimental effect on the cells. In the absence of OGD, krypton reduced the reducing ability of uninjured cells to 0.84+/-0.09 (p<0.01), but argon showed an improvement in reducing ability to 1.15+/-0.11 (p<0.05). Our data suggest that the cheap and widely available noble gas argon may have potential as a neuroprotectant for the future.
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Affiliation(s)
- Noorulhuda Jawad
- Department of Anaesthetics, Pain Medicine and Intensive Care, Imperial College London, Chelsea and Westminster Hospital, 369 Fulham Road, London SW10 9NH, United Kingdom
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Antonelli C, Franchi F, Della Marta ME, Carinci A, Sbrana G, Tanasi P, De Fina L, Brauzzi M. Guiding principles in choosing a therapeutic table for DCI hyperbaric therapy. Minerva Anestesiol 2009; 75:151-161. [PMID: 19221544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Hyperbaric therapy is the basis of treatment for pervasive development disorders. For this reason, the choice of the right therapeutic table for each case is critical. Above all, the delay in recompression time with respect to the first symptoms and to the severity of the case must be considered. In our experience, the use of low-pressure oxygen tables resolves almost all cases if recompression takes place within a short time. When recompression is possible almost immediately, the mechanical effect of reduction on bubble volume due to pressure is of remarkable importance. In these cases, high-pressure tables can be considered. These tables can also be used in severe spinal-cord decompression sickness. The preferred breathing mixture is still disputed. Heliox seems to be favored because it causes fewer problems during the recompression of divers, and above all, because nitrox can cause narcosis and contributes nitrogen. Saturation treatment should be avoided or at least used only in special cases. In cases of arterial gas embolism cerebral injury, it is recommended to start with an initial 6 ATA recompression only if the time between symptom onset and the beginning of recompression is less than a few hours.
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Affiliation(s)
- C Antonelli
- Unit of Diving and Hyperbaric Medicine, Misericordia Hospital, Via Senese, Grosseto, Italy.
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Hao YX, Zhong H, Zhang C, Zeng DZ, Shi Y, Tang B, Yu PW. Effects of simulated carbon dioxide and helium peumoperitoneum on proliferation and apoptosis of gastric cancer cells. World J Gastroenterol 2008; 14:2241-5. [PMID: 18407602 PMCID: PMC2703853 DOI: 10.3748/wjg.14.2241] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2007] [Revised: 02/05/2008] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate the effects of carbon dioxide (CO(2)) and helium insufflation administered at different pressures on the growth and apoptosis of cultured human gastric cancer cells. METHODS The gastric cancer cells MKN-45 were exposed to a CO(2) and helium environment maintained at different pressures (0, 5, 10 and 15 mmHg). The cells were exposed to simulated pneumoperitoneum environment for 4 h, and pH of the culture media was measured after it was moved to normal conditions for 0, 2, 4, 6 and 8 h. Proliferation viability of MKN-45 was examined by 3-[4,5Dimethylthiazol-2-yl],5-diphenyltetrazolium bromide or triazolyl blue (MTT) assay after it was moved to normal conditions. Apoptotic ratio was measured by Annexin V-FITC/PI double labelled staining. RESULTS The pH of media was acid and recovered to normal after 4 h in the CO(2) group while it was basic in the helium group. There was no difference between CO(2) groups (under 10 mmHg ) and control group (P > 0.05) in the proliferative viability of the cells. The cultured cells exposed to 15 mmHg CO(2) environment grew more slowly than control group from 4 to 7 d (P < 0.01 ) while there was no difference from 1 to 3 d (P > 0.05). The proliferative viability in helium group was not obviously different from the control group (P > 0.05). The apoptotic ratio of the cultured cells was markedly higher than that of the control group (P < 0.01) at 10 and 15 mmHg CO(2) insufflation pressure. In helium group, the apoptotic ratio was not obviously different from the control group (P > 0.05). CONCLUSION There is no obvious effect in the proliferation and apoptosis of MKN-45 cells under 10 mmHg CO(2) insufflation pressure and helium in any pressure. Fifteen mmHg CO(2) insufflation pressure can inhibit the proliferation of the cells and improve apoptosis.
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Pagel PS, Krolikowski JG, Shim YH, Venkatapuram S, Kersten JR, Weihrauch D, Warltier DC, Pratt PF. Noble gases without anesthetic properties protect myocardium against infarction by activating prosurvival signaling kinases and inhibiting mitochondrial permeability transition in vivo. Anesth Analg 2007; 105:562-9. [PMID: 17717207 DOI: 10.1213/01.ane.0000278083.31991.36] [Citation(s) in RCA: 97] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND The anesthetic noble gas, xenon, produces cardioprotection. We hypothesized that other noble gases without anesthetic properties [helium (He), neon (Ne), argon (Ar)] also produce cardioprotection, and further hypothesized that this beneficial effect is mediated by activation of prosurvival signaling kinases [including phosphatidylinositol-3-kinase, extracellular signal-regulated kinase, and 70-kDa ribosomal protein s6 kinase] and inhibition of mitochondrial permeability transition pore (mPTP) opening in vivo. METHODS Rabbits (n = 98) instrumented for hemodynamic measurement and subjected to a 30-min left anterior descending coronary artery (LAD) occlusion and 3 h reperfusion received 0.9% saline (control), three cycles of 70% He-, Ne-, or Ar-30% O2 administered for 5 min interspersed with 5 min of 70% N2-30% O2 before LAD occlusion, or three cycles of brief (5 min) ischemia interspersed with 5 min reperfusion before prolonged LAD occlusion and reperfusion (ischemic preconditioning). Additional groups of rabbits received selective inhibitors of phosphatidylinositol-3-kinase (wortmannin; 0.6 mg/kg), extracellular signal-regulated kinase (PD 098059; 2 mg/kg), or 70-kDa ribosomal protein s6 kinase (rapamycin; 0.25 mg/kg) or mPTP opener atractyloside (5 mg/kg) in the absence or presence of He pretreatment. RESULTS He, Ne, Ar, and ischemic preconditioning significantly (P < 0.05) reduced myocardial infarct size [23% +/- 4%, 20% +/- 3%, 22% +/- 2%, 17% +/- 3% of the left ventricular area at risk (mean +/- sd); triphenyltetrazolium chloride staining] versus control (45% +/- 5%). Wortmannin, PD 098059, rapamycin, and atractyloside alone did not affect infarct size, but these drugs abolished He-induced cardioprotection. CONCLUSIONS The results indicate that noble gases without anesthetic properties produce cardioprotection by activating prosurvival signaling kinases and inhibiting mPTP opening in rabbits.
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Affiliation(s)
- Paul S Pagel
- Department of Anesthesiology, The Medical College of Wisconsin and the Clement J. Zablocki Veterans Affairs Medical Center, Milwaukee, Wisconsin 53295, USA.
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Butcher SJ, Jones RL, Mayne JR, Hartley TC, Petersen SR. Impaired exercise ventilatory mechanics with the self-contained breathing apparatus are improved with heliox. Eur J Appl Physiol 2007; 101:659-69. [PMID: 17701048 DOI: 10.1007/s00421-007-0541-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/23/2007] [Indexed: 10/23/2022]
Abstract
The effect of the self-contained breathing apparatus (SCBA) with compressed air (BA-A) on ventilatory mechanics, work of breathing (WOB), pulmonary function, and respiratory muscle fatigue, was compared with that of a low resistance breathing valve (LRV). Further, the effect of unloading the respiratory muscles with heliox with the SCBA (BA-H) was compared with BA-A and LRV. Twelve men completed three randomized exercise trials on separate days, each consisting of three 10 min bouts of stepping exercise (Bouts 1, 2, and 3) separated by a 5 min recovery. Subjects wore firefighter protective equipment including the SCBA. At rest, FEV(1) and peak expiratory flow rates were lower with BA-A than with LRV, but were higher with BA-H than either with BA-A or LRV. After Bout 3, expiratory reserve volume, expiratory resistive WOB, and inspiratory elastic WOB were increased in BA-A compared to LRV but these were lower with BA-H compared to BA-A. After Bout 3, maximal inspiratory and expiratory pressures were reduced with BA-A, but not with LRV or BA-H. In summary, we found that the SCBA reduced resting pulmonary function, and increased expiratory reserve volume, work of breathing, and respiratory muscle fatigue during stepping exercise, and these changes can be reduced with the use of heliox.
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Affiliation(s)
- Scott J Butcher
- Department of Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada, T6G 2B7
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Linck SL. Use of heliox for intraoperative bronchospasm: a case report. AANA J 2007; 75:189-92. [PMID: 17591299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Bronchospasm is an anesthetic emergency that can lead to disastrous outcomes if treatment is irresolvable. An anesthesia provider must immediately initiate treatment if bronchospasm is suspected in order to avoid negative sequelae. The following is a case report of a 32-year-old man who experienced refractory bronchospasm upon emergence from general anesthesia. This article discusses the initial treatment attempted at resolving the bronchospasm, as well as the use of heliox in the ultimate resolution of the bronchospasm. Although heliox has been used foryears to treat patients with various respiratory complications, it is not currently a common treatment instituted by anesthesia practitioners for the treatment of bronchospasm. Consideration of the use of heliox may provide another option for the treatment of a patient suffering from refractory bronchospasm.
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Hu WP, Wang JJ, Yu CL, Lan CCE, Chen GS, Yu HS. Helium-neon laser irradiation stimulates cell proliferation through photostimulatory effects in mitochondria. J Invest Dermatol 2007; 127:2048-57. [PMID: 17446900 DOI: 10.1038/sj.jid.5700826] [Citation(s) in RCA: 152] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Previous reports have shown that cellular functions could be influenced by visual light (400-700 nm). Recent evidence indicates that cellular proliferation could be triggered by the interaction of a helium-neon laser (He-Ne laser, 632.8 nm) with the mitochondrial photoacceptor-cytochrome c oxidase. Our previous studies demonstrated that He-Ne irradiation induced an increase in cell proliferation, but not migration, in the melanoma cell line A2058 cell. The aim of this study was to investigate the underlying mechanisms involved in photostimulatory effects induced by an He-Ne laser. Using the A2058 cell as a model for cell proliferation, the photobiologic effects induced by an He-Ne laser were studied. He-Ne irradiation immediately induced an increase in mitochondrial membrane potential (delta psi(mt)), ATP, and cAMP via enhanced cytochrome c oxidase activity and promoted phosphorylation of Jun N-terminal kinase (JNK)/activator protein-1 (AP-1) expressions. He-Ne irradiation-induced A2058 cell proliferation was significantly abrogated by the addition of delta psi(mt) and JNK inhibitors. Moreover, treatment with an He-Ne laser resulted in delayed effects on IL-8 and transforming growth factor-beta1 release from A2058 cells. These results suggest that He-Ne irradiation elicits photostimulatory effects in mitochondria processes, which involve JNK/AP-1 activation and enhanced growth factor release, and ultimately lead to A2058 cell proliferation.
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Affiliation(s)
- Wan-Ping Hu
- Faculty of Biotechnology and Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
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Singhaus CJ, Utidjian LH, Akins RE, Miller TL, Shaffer TH, Touch SM. Growth and development in a heliox incubator environment: a long-term safety study. Neonatology 2007; 91:28-35. [PMID: 17344649 DOI: 10.1159/000096968] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2005] [Accepted: 03/09/2006] [Indexed: 11/19/2022]
Abstract
BACKGROUND Neonates exposed to mechanical ventilation may develop bronchopulmonary dysplasia (BPD). BPD neonates exhibit a 25-30% increase in energy expenditure which may decrease the rate of growth and development. Heliox has been shown to improve pulmonary function and may decrease energy expenditure. We hypothesized that heliox would provide a safe environment for sustained growth and development. OBJECTIVE To assess the safety of the heliox environment we observed developmental milestones; recorded changes in weight, total length, limb length and head circumference; measured blood chemistries; compared primary organ and muscle weights, and analyzed muscle enzymatic activity. DESIGN/METHODS Four-day-old rabbit pups (n = 27) were randomized into control (21% O(2); 79% N(2)) or heliox (21% O(2); 79% He) groups, then raised for 14 days at 26.7 degrees C and 50% relative humidity. Pups were euthanized on day 14, blood drawn and primary organs, diaphragm and gastrocnemius weighed and snap-frozen. RESULTS All pups thrived in both environments, achieving expected developmental milestones. There were no physiologically significant group differences in weight, growth factors, tissue weight, blood chemistry or muscle enzyme activity. CONCLUSIONS No observed long-term differences in growth or development. RESULTS demonstrated that long-term heliox exposure is safe in this rabbit model. These data suggest that heliox administration may provide time for pulmonary improvement in the BPD population, warranting appropriate clinical trials.
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Affiliation(s)
- Clifford J Singhaus
- Nemours Research Lung Center, Alfred I. duPont Hospital for Children/Nemours Research Lung Center, Wilmington, DE 19803, USA
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Abstract
Electrical stimulation of intercostal muscles was employed to measure thoracic gas volume (TGV) during airway occlusion in the absence of respiratory effort at different levels of lung inflation. In 15 tracheostomized and mechanically ventilated CBA/Ca mice, the value of TGV obtained from the spontaneous breathing effort available in the early phase of the experiments (TGVsp) was compared with those resulting from muscle stimulation (TGVst) at transrespiratory pressures of 0, 10, and 20 cmH2O. A very strong correlation ( r2 = 0.97) was found, although with a systematically (∼16%) higher estimation of TGVst relative to TGVsp, attributable to the different durations of the stimulated (∼50 ms) and spontaneous (∼200 ms) contractions. Measurements of TGVst before and after injections of 0.2, 0.4, and 0.6 ml of nitrogen into the lungs in six mice resulted in good agreement between the change in TGVst and the injected volume ( r2 = 0.98). In four mice, TGVsp and TGVst were compared at end expiration with air or a helium-oxygen mixture to confirm the validity of isothermal compression in the alveolar gas. The TGVst values measured at zero transrespiratory pressure in all CBA/Ca mice [0.29 ± 0.05 (SD) ml] and in C57BL/6 ( N = 6; 0.34 ± 0.08 ml) and BALB/c ( N = 6; 0.28 ± 0.06 ml) mice were in agreement with functional residual capacity values from previous studies in which different techniques were used. This method is particularly useful when TGV is to be determined in the absence of breathing activity, when it must be known at any level of lung inflation or under non-steady-state conditions, such as during pharmaceutical interventions.
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Affiliation(s)
- Tibor Z Jánosi
- Dept. of Medical Informatics, Univ. of Szeged, Korányi fasor 9, H-6720 Szeged, Hungary
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Myers TR. Use of heliox in children. Respir Care 2006; 51:619-31. [PMID: 16723039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
For over 70 years, helium-oxygen mixture (heliox) has been promoted as adjunctive therapy to overcome airflow-obstructive disorders and lesions. In the past 2 decades heliox has gained widespread support in many pediatric emergency departments and intensive care units, in treatment of infants and children with both upper and lower airway obstruction. Because heliox is less dense than air or oxygen, it provides more laminar flow in obstructed airways, and it is purported to reduce work of breathing, respiratory distress, and postextubation stridor. Clinical evidence of the effectiveness of heliox in pediatric patients with airflow obstruction is relatively sparse and appears in the literature primarily as case presentations, case series, and small, uncontrolled studies. This article reviews the rationale and methods for heliox treatment of children with asthma, airway obstruction, bronchiolitis, and croup.
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Hess DR. Heliox and noninvasive positive-pressure ventilation: a role for heliox in exacerbations of chronic obstructive pulmonary disease? Respir Care 2006; 51:640-50. [PMID: 16723041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Evidence-based respiratory therapy for exacerbations of chronic obstructive pulmonary disease (COPD) includes oxygen, inhaled bronchodilators, and noninvasive positive-pressure ventilation. Examining the physics of gas flow, a case can be made either for or against the use of helium-oxygen mixture (heliox) in the care of patients with COPD. The evidence for the use of heliox in patients with COPD exacerbation is not strong at present. Most of the peer-reviewed literature consists of case reports, case series, and physiologic studies in small samples of carefully selected patients. Some patients with COPD exacerbation have a favorable physiologic response to heliox therapy, but predicting who will be a responder is difficult. Moreover, the use of heliox is hampered by the lack of widespread availability of an approved heliox delivery system. Appropriately designed randomized controlled trials with patient-important outcomes, such as avoidance of intubation, decreased intensive-care-unit and hospital days, and decreased cost of therapy, are sorely needed to establish the role of heliox in patients with COPD exacerbation, including those receiving noninvasive positive-pressure ventilation. Lacking such evidence, the use of heliox in patients with COPD exacerbation cannot be considered standard therapy.
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Affiliation(s)
- Dean R Hess
- Department of Respiratory Care, Massachusetts General Hospital, Boston, MA 02114, USA.
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Hess DR, Fink JB, Venkataraman ST, Kim IK, Myers TR, Tano BD. The history and physics of heliox. Respir Care 2006; 51:608-12. [PMID: 16723037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Since the discovery of helium in 1868, it has found numerous applications in industry and medicine. Its low density makes helium potentially valuable in respiratory care applications, to reduce work of breathing, improve distribution of ventilation, reduce minute volume requirement, and improve aerosol delivery. This review includes a brief history of the use of heliox (a mixture of helium and oxygen) and addresses issues related to the physics of gas flow when heliox is used. Specifically covered are the Hagen-Poiseuille equation, laminar versus turbulent flow, the Reynolds number, orifice flow, Bernoulli's principle, Graham's law, wave speed, and thermal conductivity.
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Affiliation(s)
- Dean R Hess
- Department of Respiratory Care, Massachusetts General Hospital, Boston, MA 02114, USA.
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Venkataraman ST. Heliox during mechanical ventilation. Respir Care 2006; 51:632-9. [PMID: 16723040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
The indications for heliox during mechanical ventilation are lower-airway obstruction, especially with hypercarbia; need to enhance aerosol delivery to lung periphery; and need to facilitate weaning from mechanical ventilation. Certain ventilators perform relatively well with heliox and are not substantially affected by it. It is preferable to connect the heliox to the air inlet of the ventilator, because this results in more consistent delivery of oxygen and tidal volume. When administering heliox, pay close attention and directly monitor the actual tidal volume and fraction of inspired oxygen.
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Affiliation(s)
- Shekhar T Venkataraman
- Pediatric Intensive Care Unit, Children's Hospital of Pittsburgh, 3705 Fifth Avenue, Pittsburgh, PA 15213-2583, USA.
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Lee K, Paek KH, Ju WT, Lee Y. Sterilization of bacteria, yeast, and bacterial endospores by atmospheric-pressure cold plasma using helium and oxygen. J Microbiol 2006; 44:269-75. [PMID: 16820756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Atmospheric-pressure cold plasma (APCP) using helium/oxygen was developed and tested as a suitable sterilization method in a clinical environment. The sterilizing effect of this method is not due to UV light, which is known to be the major sterilization factor of APCP, but instead results from the action of reactive oxygen radicals. Escherichia coli, Staphylococcus aureus, and Saccharomyces cerevisiae deposited on a nitrocellulose filter membrane or Bacillus subtilis spores deposited on polypropylene plates were exposed to helium/oxygen plasma generated with AC input power at 10 kHz, 6 kV. After plasma treatment, nitrocellulose filter membranes were overlaid on fresh solid media and CFUs were counted after incubation overnight. D-values were 18 sec for E. coli, 19 sec for S. aureus, 1 min 55 sec for S. cerevisiae, and 14 min for B. subtilis spores. D-values of bacteria and yeast were dependent on the initial inoculation concentration, while the D-value of B. subtilis spores showed no correlation. When treated cells were observed with a scanning electron microscope, E. coli was more heavily damaged than S. aureus, S. cerevisiae exhibited peeling, and B. subtilis spores exhibited shrunken morphology. Results showed that APCP using helium/oxygen has many advantages as a sterilization method, especially in a clinical environment with conditions such as stable temperature, unlimited sample size, and no harmful gas production.
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Affiliation(s)
- Kyenam Lee
- Department of Biology, College of Natural Sciences, Seoul Women's University, Seoul 139-774, Republic of Korea
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Cambonie G, Milési C, Fournier-Favre S, Counil F, Jaber S, Picaud JC, Matecki S. Clinical effects of heliox administration for acute bronchiolitis in young infants. Chest 2006; 129:676-82. [PMID: 16537867 DOI: 10.1378/chest.129.3.676] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
OBJECTIVE To assess the effect of heliox, a helium-oxygen mixture, on respiratory distress symptoms in young infants. DESIGN Prospective, randomized, double-blind study. SETTING Pediatric ICU (PICU) of a university hospital. PATIENTS Twenty infants, all < 3 months old, admitted to the PICU with moderate-to-severe acute respiratory syncytial virus bronchiolitis. INTERVENTIONS All infants were randomly and blindly assigned to inhale either heliox or an air-oxygen mixture (airox) for 1 h under an oxyhood. MEASUREMENTS AND RESULTS After 1 h, the respiratory distress score was significantly lower in the heliox group compared with the airox group (3.05 vs 5.5, p < 0.01), with a significant reduction in accessory muscles use (p < 0.05) and expiratory wheezing (p < 0.01). In contrast, inspiratory breath sounds and cyanosis did not significantly differ between groups. The ex-premature infants of the heliox group had a higher respiratory distress score at baseline compared with the term infants of this group (5.8 vs 5.2, p < 0.05) and a comparable decrease in the score at 60 min. CONCLUSIONS In young infants, even those born prematurely, heliox breathing induced a rapid reduction in accessory muscles use and expiratory wheezing. Further studies are needed to confirm the decreased respiratory muscle work of breathing during heliox inhalation in this population.
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Affiliation(s)
- Gilles Cambonie
- Unité de Réanimation-Pédiatrique, CHU de Montpellier, Hôpital Arnaud de Villeneuve, 371 Avenue du Doyen G. Giraud, 34295 Montpellier Cedex 5, France.
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Shanbhag DD, Altes TA, Miller GW, Mata JF, Knight-Scott J. q-space analysis of lung morphometry in vivo with hyperpolarized3He spectroscopy. J Magn Reson Imaging 2006; 24:84-94. [PMID: 16767705 DOI: 10.1002/jmri.20618] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
PURPOSE To examine the utility of a (3)He spectroscopic q-space technique for detecting changes in lung morphometry in vivo. MATERIALS AND METHODS A diffusion-weighted spectroscopy sequence was used to collect global diffusion data from healthy adults (N = 11), healthy children (N = 5), and chronic obstructive pulmonary disease (COPD) patients (N = 2) using 40 cc of hyperpolarized (3)He gas within a two second breathhold. Displacement probability profiles (DPP) were obtained by Fourier transformation of diffusion data with respect to q. A bi-Gaussian model was used to decompose the DPPs into narrow and broad components, characterized by root-mean-square displacements X(rms1) and X(rms2), respectively. RESULTS In healthy adults, the narrow component (X(rms,1)) of the DPP had a mean displacement of 188 +/- 10 microm, slightly less than the reported average size of the alveoli. The broad component (X(rms,2)) had a mean value of 474 +/- 44 microm, comparable to the diameter of the respiratory bronchioles in the acinus. In children, both X(rms1) (167 +/- 4 microm) and X(rms2) (382 +/- 22 microm) compared to healthy adults (P < 0.01). In COPD patients, the mean displacements were elevated (X(rms1): 265 +/- 71 microm; X(rms2): 530 +/- 109 microm) compared to healthy adults. Excellent correlation was found between rms displacements and age (age vs. X(rms,1): r = 0.78, P < 0.001; age vs. X(rms,2): r = 0.90, P < 0.001). CONCLUSION The q-space parameters agreed remarkably well with published alveolar morphometry data. The results suggest that the technique may be sensitive to disease, as evident from the elevated mean displacements in COPD patients compared to healthy volunteers. Detailed lung microstructural information can be obtained using a very low volume of inhaled (3)He.
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Affiliation(s)
- Dattesh D Shanbhag
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, USA
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Schmidt AI, Reismann M, Kübler JF, Vieten G, Bangen C, Shimotakahara A, Glüer S, Nustede R, Ure BM. Exposure to carbon dioxide and helium reduces in vitro proliferation of pediatric tumor cells. Pediatr Surg Int 2006; 22:72-7. [PMID: 16283335 DOI: 10.1007/s00383-005-1585-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
BACKGROUND Minimally invasive techniques are increasingly applied to children with malignant tumors. We showed previously that CO(2) used for pneumoperitoneum modulates the function of macrophages and polymorphonuclear cells via direct effects and via acidification. Numerous in vitro and small animal model studies also confirmed an alteration of the behavior of several types of adult tumor cells by CO(2). The impact of CO(2) and other gases used for pneumoperitoneum on the behavior of various pediatric tumors has not yet been determined. METHODS Cell lines of neuroblastoma (IMR 32, SK-N-SH, Sy5y), lymphoma (Daudi), hepatoblastoma (Huh 6), hepatocellular carcinoma (Hep G2), and rhabdomyosarcoma (Te 671) were incubated for 2 h. Incubation was performed with 100% CO(2), 100% helium, and 5% CO(2) as control. Cell proliferation was determined by the MTT-assay [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] by actively growing cells to produce a blue formazan product. The MTT-assay was performed before, directly after incubation, and daily for 4 days. Vitality of the cells was determined by trypan blue. The extracellular pH during incubation was measured during gas exposition every 10 min using Bayer Rapid Lab 855. RESULTS CO(2) for 2 h significantly decreased the proliferation of neuroblastoma, lymphoma, hepatoblastoma, and hepatocellular carcinoma cells. This decrease persisted over 4 days in neuroblastoma, lymphoma, and hepatocellular carcinoma cells. The CO(2) had no impact on hepatoblastoma and rhabdomyosarcoma cells. Helium had a similar effect on neuroblastoma cells. After 4 days, a significant decrease of cell activity was found in two neuroblastoma cell lines and in hepatoblastoma cells. Helium had no effect on lymphoma and hepatocellular carcinoma cells. The extracellular pH was 6.2 during incubation with CO(2), and 7.6 during incubation with helium. CONCLUSION CO(2) and helium may affect the proliferation of some pediatric tumor cell lines in vitro. However, some of these effects and the impact on the extracellular pH are differential. The role of pH modulation, hypoxia and direct effects of gases remain to be investigated before a general recommendation on the use of minimally invasive techniques in pediatric oncology can be given.
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Affiliation(s)
- Annika I Schmidt
- Department of Pediatric Surgery, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625 Hannover, Germany
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Nawab US, Touch SM, Irwin-Sherman T, Blackson TJ, Greenspan JS, Zhu G, Shaffer TH, Wolfson MR. Heliox attenuates lung inflammation and structural alterations in acute lung injury. Pediatr Pulmonol 2005; 40:524-32. [PMID: 16193495 DOI: 10.1002/ppul.20304] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Low-density gas mixtures, such as heliox, were shown to reduce the work of breathing and facilitate the distribution of inspired gas. Since supplemental ventilatory and oxygen requirements may lead to pulmonary inflammation and structural alterations, we hypothesized that by reducing these requirements, heliox breathing may attenuate the acute inflammatory and structural changes associated with acute lung injury. Spontaneously breathing neonatal pigs were anesthetized, instrumented, supported with continuous positive airway pressure (CPAP), injured with oleic acid, and randomized to nitrox (n = 6) or heliox (n = 5).F(I)O(2) was titrated for pulse oximetry (SpO(2)) 95 +/- 2% for 4 hr. Gas exchange and pulmonary mechanics were measured. Lungs were analyzed for myeloperoxidase (MPO), interleukin-8 (IL-8), and histomorphometery. Relationships between physiologic indices and cumulative lung structure and inflammatory indices were evaluated. With heliox, compliance was significantly greater, while tidal volume, frequency, minute ventilation, F(I)O(2), arterial carbon dioxide tension (PaCO(2)), MPO, and IL-8 were significantly lower compared to nitrox. The expansion index and number of exchange units were significantly greater with heliox, while the exchange unit area (EUA) was smaller. MPO was significantly and positively correlated with F(I)O(2) (r = 0.76) and EUA (r = 0.63), and negatively correlated with number of open exchange units/field (r = -0.73). Compared to breathing nitrox, these data indicate that heliox improved the distribution of inspired gas, thereby recruiting more gas exchange units, improving gas exchange efficiency, reducing ventilatory and oxygen requirements, and attenuating lung inflammation. These data suggest that heliox breathing may have the combined therapeutic benefits of attenuating lung inflammation by reducing mechanical and oxidative stress in the clinical management of acute lung injury.
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Affiliation(s)
- Ursula S Nawab
- Division of Neonatology, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, USA
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Weibing X, Jun L, Zheng M, Fengtao Y, Hexiang Z. Effect of 2.1 MPa and 4.1 MPa H2O2 exposure on auditory brain stem evoked potential in mice. Undersea Hyperb Med 2005; 32:391-6. [PMID: 16457087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Brain auditory evoked potential (BAEP) in mice exposed to hyperbaric H2O2 pressure was monitored to reveal the correlation between altered synaptic transmission and hydrogen narcosis or isobaric HPNS. Inter peak latencies and wave amplitudes were selected as indices of assessment. The animals were exposed either to He-O2 or H2-O2 at 2.1 MPa and 4.1 MPa. Results showed that synaptic transmission was inhibited to various extents. The inhibition was partly due to the narcotic effect of hydrogen, which was added to the effect caused by hydrostatic pressure. On the other hand, asymmetrical reaction of each segment in the neuro-network might be responsible for the occurrence of HPNS.
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Affiliation(s)
- X Weibing
- The Diving Medicine Laboratory, the NMRI of the PLA Shanghai, China
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Tonnellier M, Ferrari F, Goldstein I, Sartorius A, Marquette CH, Rouby JJ. Intravenous versus nebulized ceftazidime in ventilated piglets with and without experimental bronchopneumonia: comparative effects of helium and nitrogen. Anesthesiology 2005; 102:995-1000. [PMID: 15851887 DOI: 10.1097/00000542-200505000-00019] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Lung deposition of intravenous cephalosporins is low. The lung deposition of equivalent doses of ceftazidime administered either intravenously or by ultrasonic nebulization using either nitrogen-oxygen or helium-oxygen as the carrying gas of the aerosol was compared in ventilated piglets with and without experimental bronchopneumonia. METHODS Five piglets with noninfected lungs and 5 piglets with Pseudomonas aeruginosa experimental bronchopneumonia received 33 mg/kg ceftazidime intravenously. Ten piglets with noninfected lungs and 10 others with experimental P. aeruginosa bronchopneumonia received 50 mg/kg ceftazidime by ultrasonic nebulization. In each group, the ventilator was operated in half of the animals with a 65%/35% helium-oxygen or nitrogen-oxygen mixture. Animals were killed, and multiple lung specimens were sampled for measuring ceftazidime lung tissue concentrations by high-performance liquid chromatography. RESULTS As compared with intravenous administration, nebulization of ceftazidime significantly increased lung tissue concentrations (17 +/- 13 vs. 383 +/- 84 microg/g in noninfected piglets and 10 +/- 3 vs. 129 +/- 108 microg/g in piglets with experimental bronchopneumonia; P < 0.001). The use of a 65%/35% helium-oxygen mixture induced a 33% additional increase in lung tissue concentrations in noninfected piglets (576 +/- 141 microg/g; P < 0.001) and no significant change in infected piglets (111 +/- 104 microg/g). CONCLUSION Nebulization of ceftazidime induced a 5- to 30-fold increase in lung tissue concentrations as compared with intravenous administration. Using a helium-oxygen mixture as the carrying gas of the aerosol induced a substantial additional increase in lung deposition in noninfected piglets but not in piglets with experimental bronchopneumonia.
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Affiliation(s)
- Marc Tonnellier
- Réanimation Chirurgicale Pierre Viars, Département d'Anesthésie, Hôpital de la Pitié-Salpétrière (University of Paris 6), Paris, France
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Goitein D, Papasavas P, Yeaney W, Gagne D, Hayetian F, Caushaj P, Keenan R, Landreneau R. Microsphere intestinal blood flow analysis during pneumoperitoneum using carbon dioxide and helium. Surg Endosc 2005; 19:541-5. [PMID: 15742125 DOI: 10.1007/s00464-004-8911-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2004] [Accepted: 10/26/2004] [Indexed: 11/28/2022]
Abstract
BACKGROUND Pneumoperitoneum has been associated with a decreased flow in the superior mesenteric artery and portal venous system. Intestinal blood flow was studied during a 2-h pneumoperitoneum with carbon dioxide (CO2) or helium in a porcine model using colored microspheres. METHODS For this study, 12 pigs were divided into two groups (6 CO2 and 6 helium). Different colored microspheres were injected directly into the left ventricle before, 40, 80, and 120 min after insufflation with either gas at a pressure of 15 mmHg. Microsphere concentration was measured in the mucosa and muscularis/serosa layers of the jejunum, cecum, and sigmoid colon to calculate blood flow. RESULTS Intestinal perfusion initially increases with insufflation and returns to near baseline levels during pneumoperitoneum of 2 h. The effect of helium on tissue perfusion is similar to that of carbon dioxide. CONCLUSIONS Intestinal perfusion does not change significantly during prolonged pneumoperitoneum at a pressure of 15 mmHg with CO2 or helium.
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Affiliation(s)
- D Goitein
- Department of Surgery, The Western Pennsylvania Hospital, Temple University School of Medicine, Clinical Campus, 4800 Friendship Avenue, Pittsburgh, PA 15224, USA
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Abstract
OBJECTIVE To evaluate Co(2) clearance in oleic acid-induced lung injury in rabbits receiving high-frequency oscillatory ventilation with helium-oxygen mixtures through a low bias flow oscillation system designed to conserve expensive gases. DESIGN A prospective, controlled, interventional, in vivo animal laboratory study. SETTING Research laboratory of a health sciences university. SUBJECTS Eight New Zealand White Rabbits. INTERVENTIONS Lung injury (Pao(2)/Fio(2) of <250) was induced by intravenous infusion of oleic acid. Low bias flow oscillation was performed with a modified high-frequency oscillatory ventilation circuit that uses low bias flow (100 mL/kg/min) and a soda lime canister to clear CO(2). Low bias flow oscillation-heliox trials were performed with 40%, 50%, 60%, and 70% helium (balanced with oxygen) for 20 mins. Each heliox trial was preceded by a 20-min paired control trial with 40% oxygen/60% nitrogen. MEASUREMENTS AND MAIN RESULTS Helium concentrations of 40%, 50%, 60%, and 70% decreased Paco(2) by 13% (47 +/- 7 to 41 +/- 8 torr), 17% (50 +/- 7 to 41 +/- 6 torr), 22% (49 +/- 5 to 38 +/- 7 torr), and 26% (48 +/- 7 to 35 +/- 9 torr), respectively. The gradient between partial pressure of alveolar oxygen and Pao(2) was not affected by 60% helium; however, absolute Pao(2) increased by 15%. Fluid and inotropic requirements were similar in both control and heliox low bias flow oscillation trials. CONCLUSION Helium concentrations greater than 40% increase Co(2) clearance from oleic acid-injured lungs of rabbits during low bias flow oscillation. The low bias flow oscillation system makes this possible using 1% of the gas volume required during high-frequency oscillatory ventilation.
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Affiliation(s)
- Rajashekhar Siddappa
- Division of Pediatric Critical Care, The Women and Children's Hospital of Buffalo, State University of New York at Buffalo, USA
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Abstract
The kinetics of the recombination reaction, OH+NO+(M) --> Products have been investigated by the Pulsed Laser Photolysis-Laser Induced Fluorescence (PLP-LIF) technique in nitrogen and helium buffer gases at room temperature and as a function of pressure (30-900 Torr). Our values for the absolute rate coefficient in nitrogen at room temperature are in excellent agreement with the JPL 2003 and with the current IUPAC 2003 recommendations. With the exception of a very old study by Overend, our rate constants in helium are the only ones to cover the range of pressures between 30 and 900 Torr.
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Affiliation(s)
- Giovanni Di Loreto
- Università La Sapienza, Facoltà di Farmacia, P.le Aldo Moro 5, 00185, Rome, Italy
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