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杨 杨, 刘 刚, 欧 毅, 鹿 文. [Lung-protective effect of esketamine combined with distal limb ischemic preconditioning in elderly patients undergoing thoracoscopic radical surgery for lung cancer: a randomized controlled trial in 160 cases]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2024; 44:484-490. [PMID: 38597439 PMCID: PMC11006705 DOI: 10.12122/j.issn.1673-4254.2024.03.09] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Indexed: 04/11/2024]
Abstract
OBJECTIVE To evaluate the effect of esketamine combined with distal limb ischemic preconditioning (LIP) for lung protection in elderly patients undergoing thoracoscopic radical surgery for lung cancer. METHODS This randomized trial was conducted in 160 patients undergoing elective thoracoscopic surgery for lung cancer, who were randomized into control group (with saline injection and sham LIP), esketamine group, LIP group, and esketamine + LIP group (n=40). Before anesthesia induction, according to the grouping, the patients received an intravenous injection with 0.5 mg/kg esketamine or 10 ml saline (in control group). LIP was induced by applying a tourniquet 1-2 cm above the popliteal fossa in the left lower limb to block the blood flow for 5 min for 3 times at the interval of 5 min, and sham LIP was performed by applying the tourniquet without pressurization for 30 min. Oxygenation index (OI) and alveolar-arterial PO2 difference (A-aDO2) were calculated before induction (T0), at 30 min (T0.5) and 1 h (T1) of one-lung ventilation (OLV), and at 1 h after two-lung ventilation (T3). Serum levels of SP-D, CC-16 and TNF-α were measured by ELISA at T0, T1, T2 (2 h of OLV), T3, and 24 h after the operation (T4). The length of hospital stay and postoperative pulmonary complications of the patients were recorded. RESULTS Compared with those in the control group, the patients in the other 3 groups had significantly lower CC-16, SP-D and TNF-α levels, shorter hospital stay, and lower incidences of lung infection and lung atelectasis (all P < 0.05). Serum CC-16, SP-D and TNF-α levels, hospital stay, incidences of complications were significantly lower or shorter in the combined treatment group than in esketamine group and LIP group (all P < 0.05). CONCLUSION In elderly patients undergoing thoracoscopic radical surgery for lung cancer, treatment with esketamine combined with LIP can alleviate acute lung injury by enhancing anti-inflammatory response to shorten postoperative hospital stay, reduce lung complications and promote the patients' recovery.
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Affiliation(s)
- 杨 杨
- />蚌埠医科大学第一附属医院麻醉科,安徽 蚌埠 233000Department of Anesthesiology, First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
| | - 刚 刘
- />蚌埠医科大学第一附属医院麻醉科,安徽 蚌埠 233000Department of Anesthesiology, First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
| | - 毅 欧
- />蚌埠医科大学第一附属医院麻醉科,安徽 蚌埠 233000Department of Anesthesiology, First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
| | - 文琪 鹿
- />蚌埠医科大学第一附属医院麻醉科,安徽 蚌埠 233000Department of Anesthesiology, First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
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Ghanty S, Mandi M, Ganguly A, Das K, Dutta A, Nanda S, Biswas G, Rajak P. Lung surfactant proteins as potential targets of prallethrin: An in silico approach. TOXICOLOGY AND ENVIRONMENTAL HEALTH SCIENCES 2022; 14:89-100. [PMCID: PMC8788395 DOI: 10.1007/s13530-021-00119-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 12/13/2021] [Indexed: 11/19/2023]
Abstract
Object Prallethrin is a pyrethroid-based insecticide, commonly used as a liquid vaporizer in household, schools, and offices to repel mosquitoes. Due to worldwide application, human beings are exposed to this compound via inhalation. Inhalation of prallethrin can expose lung surfactant proteins (SPs) to this compound. SPs such as SP-A and SP-D have anti-microbial activities, whereas SP-B and SP-C prevent alveolar collapse during exhalation by reducing surface pressure in alveolar walls. The present study aimed to investigate the binding affinities of prallethrin for the pulmonary SPs and the possible interactions involved in it. Methods In this study, molecular docking was performed using prallethrin as ligand and lung SPs as target molecules. The three-dimensional structure of prallethrin (PubChem CID: 9839306) was retrieved from PubChem (https://pubchem.ncbi.nlm.nih.gov/ ), whereas the same for SPs were retrieved from RCSB Protein Data Bank (https://www.rcsb.org/ ). AutoDock 4.2 employing Lamarckian genetic algorithm was used to calculate binding affinities between the target protein and the ligand. Polar and nonpolar interactions between the amino acids of SPs and Prallethrin were studied utilizing Chimera X and Discovery Studio Visualizer. Results Results demonstrated that, prallethrin can bind with the four SPs using several interactions such as hydrogen bonds, alkyl bonds, Pi–Pi interaction, Van der Waals interaction and other. Prallethrin interacted with two binding pockets of SP-A and SP-C, whereas the prallethrin interacted with three binding pockets of SP-B and SP-D, respectively. Conclusion Findings of the study indicated that prallethrin can bind with the pulmonary SPs employing hydrogen and hydrophobic interactions. Such interactions could impair critical functions of SPs in lungs. This might increase susceptibility of lungs towards a range of respiratory illness, pathogenic infections, as well as malignancy. Graphical abstract
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Affiliation(s)
- Siddhartha Ghanty
- Department of Animal Science, Kazi Nazrul University, Asansol, West Bengal India
| | - Moutushi Mandi
- Department of Zoology, The University of Burdwan, Purba Bardhaman, West Bengal India
| | - Abhratanu Ganguly
- Department of Animal Science, Kazi Nazrul University, Asansol, West Bengal India
- Post Graduate Department of Zoology, A.B.N. Seal College, Cooch Behar, West Bengal India
| | - Kanchana Das
- Department of Zoology, The University of Burdwan, Purba Bardhaman, West Bengal India
| | - Anik Dutta
- Post Graduate Department of Zoology, Darjeeling Government College, Darjeeling, West Bengal India
| | - Sayantani Nanda
- Department of Animal Science, Kazi Nazrul University, Asansol, West Bengal India
| | - Gopal Biswas
- Department of Zoology, The University of Burdwan, Purba Bardhaman, West Bengal India
| | - Prem Rajak
- Department of Animal Science, Kazi Nazrul University, Asansol, West Bengal India
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In silico study reveals binding potential of rotenone at multiple sites of pulmonary surfactant proteins: A matter of concern. Curr Res Toxicol 2021; 2:411-423. [PMID: 34917955 PMCID: PMC8666459 DOI: 10.1016/j.crtox.2021.11.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 11/20/2021] [Accepted: 11/30/2021] [Indexed: 12/21/2022] Open
Abstract
Inhalation of rotenone exposes lung surfactant proteins (SP) to this pesticide. SP-A and SP-D provides protection from microbial infection. SP-B and SP-C maintain structure and respiratory function of lungs. Rotenone has potential to bind SPs at multiple sites. Such binding can subvert functions of SPs & may invite respiratory ailments.
Rotenone is a broad-spectrum pesticide employed in various agricultural practices all over the world. Human beings are exposed to this chemical through oral, nasal, and dermal routes. Inhalation of rotenone exposes bio-molecular components of lungs to this chemical. Biophysical activity of lungs is precisely regulated by pulmonary surfactant to facilitate gaseous exchange. Surfactant proteins (SPs) are the fundamental components of pulmonary surfactant. SPs like SP-A and SP-D have antimicrobial activities providing a crucial first line of defense against infections in lungs whereas SP-B and SP-C are mainly involved in respiratory cycle and reduction of surface tension at air–water interface. In this study, molecular docking analysis using AutoDock Vina has been conducted to investigate binding potential of rotenone with the four SPs. Results indicate that, rotenone can bind with carbohydrate recognition domain (CRD) of SP-A, N-, and C- terminal peptide of SP-B, SP-C, and CRD of SP-D at multiples sites via several interaction mediators such as H bonds, C–H bonds, alkyl bonds, pi-pi stacked, Van der Waals interaction, and other. Such interactions of rotenone with SPs can disrupt biophysical and anti-microbial functions of SPs in lungs that may invite respiratory ailments and pathogenic infections.
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Key Words
- ALA, Alanine
- ARG, Arginine
- ASN, Asparagine
- ASP, Aspartic acid
- CYS, Cysteine
- Carbohydrate recognition domain
- GLN, Glutamine
- GLU, Glutamic acid
- GLY, Glycine
- HIS, Histidine
- ILE, Isoleucine
- LEU, Leucine
- LYS, Lysine
- Lungs
- MET, Methionine
- Molecular docking
- PHE, Phenylalanine
- PRO, Proline
- Rotenone
- SER, Serine
- Surfactant protein
- THR, Threonine
- TRP, Tryptophan
- TYR, Tyrosine
- VAL, Valine
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Rauwolf KK, Hoertnagl C, Lass-Floerl C, Groll AH. Interaction in vitro of pulmonary surfactant with antifungal agents used for treatment and prevention of invasive aspergillosis. J Antimicrob Chemother 2021; 77:695-698. [PMID: 34788449 DOI: 10.1093/jac/dkab422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 10/19/2021] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Optimizing antifungal therapy is important to improve outcomes in severely immunocompromised patients. OBJECTIVES We analysed the in vitro interaction between pulmonary surfactant and antifungal agents used for management of invasive pulmonary aspergillosis. METHODS Amphotericin B formulations, mould-active triazoles and echinocandins were tested in vitro against 24 clinical isolates of different Aspergillus spp. with and without the addition of a commercial porcine surfactant (Curosurf®; Poractant alfa, Nycomed, Austria). The data are presented as MIC or minimum effective concentration (MEC) ranges, as MIC or MEC values that inhibited 90% of the isolates (MIC90 or MEC90) and as geometric mean (GM) MIC or MEC values. RESULTS For amphotericin B products, addition of surfactant to a final concentration of 10% led to a statistically significant reduction of the GM MIC for all Aspergillus isolates tested after 24 h (0.765 versus 0.552 mg/L; P < 0.05). For the mould-active triazoles, addition of 10% surfactant resulted in a significantly higher GM MIC at 48 h (0.625 versus 0.898 mg/L; P < 0.05). For the echinocandins, the addition of 10% surfactant led to a significantly higher GM MEC after both 24 h (0.409 versus 0.6532 mg/L; P < 0.01) and 48 h (0.527 versus 0.9378 mg/L; P < 0.01). There were no meaningful differences between individual members of the three existing classes of antifungal agents or between the different Aspergillus spp. tested. CONCLUSIONS Using EUCAST methodology, addition of porcine surfactant up to a concentration of 10% had a minor, and presumably non-relevant, impact on the in vitro activity of antifungal agents used in prophylaxis and treatment of invasive pulmonary aspergillosis.
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Affiliation(s)
- Kerstin K Rauwolf
- Infectious Disease Research Program, Center for Bone Marrow Transplantation and Department of Paediatric Haematology/Oncology, University Children's Hospital Münster, Münster, Germany.,Division of Pediatric Oncology, University Children's Hospital, Zürich, Switzerland
| | - Caroline Hoertnagl
- Institute of Hygiene and Medical Microbiology, Christian Doppler Laboratory for Invasive Fungal Infections, Medical University of Innsbruck, Innsbruck, Austria
| | - Cornelia Lass-Floerl
- Institute of Hygiene and Medical Microbiology, Christian Doppler Laboratory for Invasive Fungal Infections, Medical University of Innsbruck, Innsbruck, Austria
| | - Andreas H Groll
- Infectious Disease Research Program, Center for Bone Marrow Transplantation and Department of Paediatric Haematology/Oncology, University Children's Hospital Münster, Münster, Germany
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Ichikawa H, Miyazawa K, Komeiji K, Susukida S, Zhang S, Muto K, Orita R, Takeuchi A, Kamachi Y, Hitosugi M, Yoshimi A, Shintani T, Kato Y, Abe K. Improved recombinant protein production in Aspergillus oryzae lacking both α-1,3-glucan and galactosaminogalactan in batch culture with a lab-scale bioreactor. J Biosci Bioeng 2021; 133:39-45. [PMID: 34627690 DOI: 10.1016/j.jbiosc.2021.09.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 09/08/2021] [Accepted: 09/11/2021] [Indexed: 12/22/2022]
Abstract
Filamentous fungi are used as production hosts for various commercially valuable enzymes and chemicals including organic acids and secondary metabolites. We previously revealed that α-1,3-glucan and galactosaminogalactan (GAG) contribute to hyphal aggregation in the industrial fungus Aspergillus oryzae, and that production of recombinant protein in shake-flask culture is higher in a mutant lacking both α-1,3-glucan and GAG (AGΔ-GAGΔ) than in the parental strain. Here, we compared the productivity of the wild type, AGΔ-GAGΔ, and mutants lacking α-1,3-glucan (AGΔ) or GAG (GAGΔ) in batch culture with intermittent addition of glucose in a 5-L lab-scale bioreactor. The hyphae of the wild type and all mutants were dispersed by agitation, although the wild type and AGΔ formed small amounts of aggregates. Although mycelial weight was similar among the strains, the concentration of a secreted recombinant protein (CutL1) was the highest in AGΔ-GAGΔ. Evaluation of fluid properties revealed that the apparent viscosities of mycelial cultures of the wild type and AGΔ-GAGΔ decreased as the agitation speed was increased. The apparent viscosity of the AGΔ-GAGΔ culture tended to be lower than that of the wild-type strain at each agitation speed, and was significantly lower at 600 rpm. Overall, the lack of α-1,3-glucan and GAG in the hyphae improved culture rheology, resulting in an increase in recombinant protein production in AGΔ-GAGΔ. This is the first report of flow behavior improvement by a cell-surface component defect in a filamentous fungus.
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Affiliation(s)
- Hikaru Ichikawa
- Laboratory of Applied Microbiology, Department of Microbial Biotechnology, Graduate School of Agricultural Sciences, Tohoku University, 468-1 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8572, Japan
| | - Ken Miyazawa
- Laboratory of Applied Microbiology, Department of Microbial Biotechnology, Graduate School of Agricultural Sciences, Tohoku University, 468-1 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8572, Japan
| | - Keisuke Komeiji
- Laboratory of Applied Microbiology, Department of Microbial Biotechnology, Graduate School of Agricultural Sciences, Tohoku University, 468-1 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8572, Japan
| | - Shunya Susukida
- Laboratory of Applied Microbiology, Department of Microbial Biotechnology, Graduate School of Agricultural Sciences, Tohoku University, 468-1 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8572, Japan
| | - Silai Zhang
- Laboratory of Bioindustrial Genomics, Department of Bioindustrial Informatics and Genomics, Graduate School of Agricultural Sciences, Tohoku University, 468-1 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8572, Japan
| | - Kiyoaki Muto
- Laboratory of Applied Microbiology, Department of Microbial Biotechnology, Graduate School of Agricultural Sciences, Tohoku University, 468-1 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8572, Japan
| | - Ryutaro Orita
- Laboratory of Applied Microbiology, Department of Microbial Biotechnology, Graduate School of Agricultural Sciences, Tohoku University, 468-1 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8572, Japan
| | - Ayumu Takeuchi
- Laboratory of Applied Microbiology, Department of Microbial Biotechnology, Graduate School of Agricultural Sciences, Tohoku University, 468-1 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8572, Japan
| | - Yuka Kamachi
- Laboratory of Applied Microbiology, Department of Microbial Biotechnology, Graduate School of Agricultural Sciences, Tohoku University, 468-1 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8572, Japan
| | - Masahiro Hitosugi
- Laboratory of Applied Microbiology, Department of Microbial Biotechnology, Graduate School of Agricultural Sciences, Tohoku University, 468-1 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8572, Japan
| | - Akira Yoshimi
- Laboratory of Environmental Interface Technology of Filamentous Fungi, Graduate School of Agriculture, Kyoto University, Oiwake-cho, Kitashirakawa, Sakyo-ku, Kyoto 606-8502, Japan; ABE-Project, New Industry Creation Hatchery Center, Tohoku University, 6-6-10 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Takahiro Shintani
- Laboratory of Bioindustrial Genomics, Department of Bioindustrial Informatics and Genomics, Graduate School of Agricultural Sciences, Tohoku University, 468-1 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8572, Japan
| | - Yoshikazu Kato
- Mixing Technology Laboratory, Satake Chemical Equipment Mfg., Ltd., 60 Niizo, Toda, Saitama 335-0021, Japan
| | - Keietsu Abe
- Laboratory of Applied Microbiology, Department of Microbial Biotechnology, Graduate School of Agricultural Sciences, Tohoku University, 468-1 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8572, Japan; ABE-Project, New Industry Creation Hatchery Center, Tohoku University, 6-6-10 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan; Department of Microbial Resources, Graduate School of Agricultural Science, Tohoku University, 468-1 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8572, Japan.
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