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Yu X, Xiong W, Zhang J, Lin J, Wang B, Huang H, Du L, Xiong J. Comparison of "Huaxi-1" or "histidine-tryptophan-ketoglutarate" cardioplegia in an animal model. Front Cardiovasc Med 2024; 11:1385253. [PMID: 38903973 PMCID: PMC11188422 DOI: 10.3389/fcvm.2024.1385253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Accepted: 05/22/2024] [Indexed: 06/22/2024] Open
Abstract
Background Using a pig model of cardiopulmonary bypass, we compared outcomes after cardioplegia either with our in-house "Huaxi-1" solution containing natural blood and crystalloid or with the entirely crystalloid, commercially available "histidine-tryptophan-ketoglutarate" solution. Methods Cardiopulmonary bypass was established in 12 healthy male pigs, who were randomized to receive a single dose of either Huaxi-1 or entirely crystalloid. All animals were then subjected to whole-heart ischemia for 90 min, followed by 2 h of reperfusion, after which myocardial injury was assessed in terms of cardiac function, myocardial pathology and levels of biomarkers in plasma, while levels of high-energy phosphate in myocardium were assayed using liquid chromatography. Results Animals given Huaxi-1 cardioplegia required significantly less time to be weaned off bypass, they received significantly lower doses of norepinephrine, and they showed significantly higher levels (mean ± SD) of adenosine triphosphate (14 ± 4 vs. 8 ± 2 µg/mg, P = 0.005), adenosine diphosphate (16 ± 2 vs. 13 ± 2 µg/mg, P = 0.046), and total adenine nucleotide (37 ± 4 vs. 30 ± 3 µg/mg, P = 0.006) in myocardium after 2 h of reperfusion. They also showed less severe bleeding, edema and injury to mitochondria and myofibers in myocardium. The two groups did not differ significantly in doses of inotropic drugs received, cardiac output or levels of biomarkers in plasma. Conclusions In this animal model of healthy hearts subjected to 90 min of ischemia, Huaxi-1 cardioplegia may be superior to entirely crystalloid cardioplegia for promoting energy generation and attenuating ischemia/reperfusion injury in myocardium.
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Affiliation(s)
- Xiang Yu
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
| | - Wen Xiong
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
- Department of Anesthesiology, The First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Jie Zhang
- Key Laboratory of Transplant Engineering and Immunology, West China Hospital, Sichuan University, Chengdu, China
| | - Jing Lin
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
| | - Bo Wang
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
| | - Hong Huang
- Chengdu Qingshan Likang Pharmaceutical Co. Ltd., Research and Development Department, Chengdu, Sichuan, China
| | - Lei Du
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
| | - Jiyue Xiong
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
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2
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Neves LS, Saraiva F, Ferreira R, Leite-Moreira A, Barros AS, Diaz SO. Metabolomics and Cardiovascular Risk in Patients with Heart Failure: A Systematic Review and Meta-Analysis. Int J Mol Sci 2024; 25:5693. [PMID: 38891881 PMCID: PMC11172189 DOI: 10.3390/ijms25115693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 05/17/2024] [Accepted: 05/21/2024] [Indexed: 06/21/2024] Open
Abstract
The associations of plasma metabolites with adverse cardiovascular (CV) outcomes are still underexplored and may be useful in CV risk stratification. We performed a systematic review and meta-analysis to establish correlations between blood metabolites and adverse CV outcomes in patients with heart failure (HF). Four cohorts were included, involving 83 metabolites and 37 metabolite ratios, measured in 1158 HF patients. Hazard ratios (HR) of 42 metabolites and 3 metabolite ratios, present in at least two studies, were combined through meta-analysis. Higher levels of histidine (HR 0.74, 95% CI [0.64; 0.86]) and tryptophan (HR 0.82 [0.71; 0.96]) seemed protective, whereas higher levels of symmetric dimethylarginine (SDMA) (HR 1.58 [1.30; 1.93]), N-methyl-1-histidine (HR 1.56 [1.27; 1.90]), SDMA/arginine (HR 1.38 [1.14; 1.68]), putrescine (HR 1.31 [1.06; 1.61]), methionine sulfoxide (HR 1.26 [1.03; 1.52]), and 5-hydroxylysine (HR 1.25 [1.05; 1.48]) were associated with a higher risk of CV events. Our findings corroborate important associations between metabolic imbalances and a higher risk of CV events in HF patients. However, the lack of standardization and data reporting hampered the comparison of a higher number of studies. In a future clinical scenario, metabolomics will greatly benefit from harmonizing sample handling, data analysis, reporting, and sharing.
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Affiliation(s)
- Leonel Sousa Neves
- Cardiovascular R&D Centre, UnIC@RISE, Department of Surgery and Physiology, Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal; (L.S.N.); (F.S.); (A.L.-M.)
| | - Francisca Saraiva
- Cardiovascular R&D Centre, UnIC@RISE, Department of Surgery and Physiology, Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal; (L.S.N.); (F.S.); (A.L.-M.)
| | - Rita Ferreira
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal;
| | - Adelino Leite-Moreira
- Cardiovascular R&D Centre, UnIC@RISE, Department of Surgery and Physiology, Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal; (L.S.N.); (F.S.); (A.L.-M.)
| | - António S. Barros
- Cardiovascular R&D Centre, UnIC@RISE, Department of Surgery and Physiology, Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal; (L.S.N.); (F.S.); (A.L.-M.)
| | - Sílvia O. Diaz
- Cardiovascular R&D Centre, UnIC@RISE, Department of Surgery and Physiology, Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal; (L.S.N.); (F.S.); (A.L.-M.)
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Odlozilova S, Paral J, Slaninka I, Zajak J, Lesko M, Geryk T, Gerykova L, Sirovy M. Use of autologous platelet-rich plasma for skin graft preservation: an experimental comparative study. INTERNATIONAL JOURNAL OF BURNS AND TRAUMA 2024; 14:38-47. [PMID: 38764893 PMCID: PMC11101996 DOI: 10.62347/mliw4300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Accepted: 04/12/2024] [Indexed: 05/21/2024]
Abstract
OBJECTIVE In this experimental study, we aimed to determine whether platelet-rich plasma (PRP) is a suitable preservative for dermo-epidermal grafts. An additional objective was to investigate how long grafts can be stored without biological degradation. METHODS We compared pig skin graft preservation using PRP versus saline solution and crystalloid Custodiol®, which is used for hypothermic preservation of organs for transplantation. Grafts (10 × 10 mm) were placed on gauze impregnated with one of the tested solutions, and stored for 3, 7, 11, and 15 days at a constant temperature of 4°C. We evaluated a total of 240 pig skin samples: 120 by histopathology and 120 by fluorescence optical microscopy. RESULTS Overall, Custodiol® solution appeared to be the best medium for preservation of dermo-epidermal grafts, with beneficial properties manifested on days 7 and 11. Although we expected PRP to be a better preservative than saline, this was not confirmed by our results, as we found no significant difference between these two media. In fact, by day 3, the histopathological results were better with standard saline solution than with PRP. On day 15, with each tested solution, some samples showed histological changes that are incompatible with graft viability. CONCLUSION Overall, Custodiol® appears to be the best medium for dermo-epidermal graft preservation. Moreover, the present findings suggest a maximum graft storage time of 11 days in all of the tested solutions. We do not recommend using grafts stored for 15 days, due to isolated signs of graft biodegradation with all solutions.
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Affiliation(s)
- Sarka Odlozilova
- Department of Military Surgery, Faculty of Military Health Sciences, University of DefenceHradec Kralove, Czech Republic
- Department of Surgery, University Hospital Hradec KraloveHradec Kralove, Czech Republic
| | - Jiri Paral
- Department of Military Surgery, Faculty of Military Health Sciences, University of DefenceHradec Kralove, Czech Republic
- Department of Surgery, University Hospital Hradec KraloveHradec Kralove, Czech Republic
| | - Igor Slaninka
- Department of Surgery, University Hospital Hradec KraloveHradec Kralove, Czech Republic
| | - Jan Zajak
- Department of Military Surgery, Faculty of Military Health Sciences, University of DefenceHradec Kralove, Czech Republic
- Department of Surgery, University Hospital Hradec KraloveHradec Kralove, Czech Republic
| | - Michal Lesko
- Department of Military Surgery, Faculty of Military Health Sciences, University of DefenceHradec Kralove, Czech Republic
- Department of Surgery, University Hospital Hradec KraloveHradec Kralove, Czech Republic
| | - Tomas Geryk
- The Fingerland Department of Pathology, University Hospital Hradec KraloveHradec Kralove, Czech Republic
| | - Lucie Gerykova
- The Fingerland Department of Pathology, University Hospital Hradec KraloveHradec Kralove, Czech Republic
| | - Miroslav Sirovy
- Department of Military Surgery, Faculty of Military Health Sciences, University of DefenceHradec Kralove, Czech Republic
- Department of Surgery, University Hospital Hradec KraloveHradec Kralove, Czech Republic
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Lira KB, Delvaux RS, Spadini FA, Hauschild LH, Ceron RO, Anschau F, Kopittke L, Rode J, Rey RAW, Wittke EI, Rombaldi AR, Cambruzzi E, Lopes ERC, Almeida AS. Myocardial protection: comparing histological effects of single-dose cardioplegic solutions-study protocol for a secondary analysis of the CARDIOPLEGIA trial. J Thorac Dis 2024; 16:1480-1487. [PMID: 38505015 PMCID: PMC10944752 DOI: 10.21037/jtd-23-1442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 12/15/2023] [Indexed: 03/21/2024]
Abstract
Background Myocardial protection is crucial for successful cardiac surgery, as it prevents heart muscle damage that can occur during the procedure. Prolonged hypoxia without proper protection can lead to adenosine triphosphate consumption, microvilli loss, blister formation, and edema. Custodiol, del Nido, and modified del Nido are single-dose cardioplegic solutions with proven safety and significance in modern surgery. While each has been independently assessed for patient outcomes, limited research directly compares them. This study aims to compare their myocardial protection using histological analysis. Methods In a double-blind clinical trial, at least 90 patients will be randomly assigned to receive one of the three cardioplegic solutions. Myocardial biopsies will be collected before cardiopulmonary bypass and 15 minutes after reperfusion. The surgical, anesthetic and perfusion techniques will be the same for all patients, following the Institution's standard protocols. Discussion The ideal cardioplegic solution does not exist, and its selection remains challenging for surgeons. In modern surgical practice, understanding the behavior of these solutions and the ischemic tissue damage caused during induced cardiac arrest allows for safer surgical procedures. The results of this clinical trial can help in understanding the behavior of cardioplegic solutions and their tissue effects. Thus, by selecting the best cardioplegic solution, ischemic damage can be minimized, enhancing the effectiveness of this essential technique in cardiac procedures. The study may aid in implementing clinical protocols in several institutions, aiming to choose the solution with a superior myocardial protection profile, increasing safety, and reducing expenses. Trial Registration Brazilian Clinical Trials Registry (ReBEC, http://ensaiosclinicos.gov.br/): RBR-997tqhh. Registered: January 26th, 2022.
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Affiliation(s)
- Kathize Betti Lira
- Department of Cardiovascular Surgery-Postgraduate Program in Cardiovascular Surgery, Nossa Senhora da Conceição Hospital, Porto Alegre, RS, Brazil
- Department of Education and Research-Postgraduate Program in Technology Assessment for the Brazilian National Health System, Conceição Hospital Group, Porto Alegre, RS, Brazil
| | - Renan Senandes Delvaux
- Department of Cardiovascular Surgery-Postgraduate Program in Cardiovascular Surgery, Nossa Senhora da Conceição Hospital, Porto Alegre, RS, Brazil
| | - Felipe Abatti Spadini
- Department of Cardiovascular Surgery-Postgraduate Program in Cardiovascular Surgery, Nossa Senhora da Conceição Hospital, Porto Alegre, RS, Brazil
- Department of Education and Research-Postgraduate Program in Technology Assessment for the Brazilian National Health System, Conceição Hospital Group, Porto Alegre, RS, Brazil
| | - Luis Henrique Hauschild
- Department of Cardiovascular Surgery-Postgraduate Program in Cardiovascular Surgery, Nossa Senhora da Conceição Hospital, Porto Alegre, RS, Brazil
- Department of Education and Research-Postgraduate Program in Technology Assessment for the Brazilian National Health System, Conceição Hospital Group, Porto Alegre, RS, Brazil
| | - Rafael Oliveira Ceron
- Department of Cardiovascular Surgery-Postgraduate Program in Cardiovascular Surgery, Nossa Senhora da Conceição Hospital, Porto Alegre, RS, Brazil
- Department of Cardiovascular Surgery, Nossa Senhora da Conceição Hospital, Porto Alegre, RS, Brazil
| | - Fernando Anschau
- Department of Education and Research-Postgraduate Program in Technology Assessment for the Brazilian National Health System, Conceição Hospital Group, Porto Alegre, RS, Brazil
- Health Technology Assessment Center, Conceição Hospital Group, Porto Alegre, RS, Brazil
| | - Luciane Kopittke
- Department of Education and Research-Postgraduate Program in Technology Assessment for the Brazilian National Health System, Conceição Hospital Group, Porto Alegre, RS, Brazil
- Health Technology Assessment Center, Conceição Hospital Group, Porto Alegre, RS, Brazil
| | - Juarez Rode
- Department of Cardiovascular Surgery-Postgraduate Program in Cardiovascular Surgery, Nossa Senhora da Conceição Hospital, Porto Alegre, RS, Brazil
- Department of Cardiovascular Surgery, Nossa Senhora da Conceição Hospital, Porto Alegre, RS, Brazil
| | - Rafael Antônio Widholzer Rey
- Department of Cardiovascular Surgery-Postgraduate Program in Cardiovascular Surgery, Nossa Senhora da Conceição Hospital, Porto Alegre, RS, Brazil
- Department of Cardiovascular Surgery, Nossa Senhora da Conceição Hospital, Porto Alegre, RS, Brazil
| | - Estefania Inez Wittke
- Department of Cardiovascular Surgery-Postgraduate Program in Cardiovascular Surgery, Nossa Senhora da Conceição Hospital, Porto Alegre, RS, Brazil
- Department of Education and Research-Postgraduate Program in Technology Assessment for the Brazilian National Health System, Conceição Hospital Group, Porto Alegre, RS, Brazil
- Department of Cardiovascular Surgery, Nossa Senhora da Conceição Hospital, Porto Alegre, RS, Brazil
| | - Alfeu Roberto Rombaldi
- Department of Cardiovascular Surgery-Postgraduate Program in Cardiovascular Surgery, Nossa Senhora da Conceição Hospital, Porto Alegre, RS, Brazil
- Department of Cardiovascular Surgery, Nossa Senhora da Conceição Hospital, Porto Alegre, RS, Brazil
| | - Eduardo Cambruzzi
- Department of Pathology, Nossa Senhora da Conceição Hospital, Porto Alegre, RS, Brazil
| | | | - Adriana Silveira Almeida
- Department of Cardiovascular Surgery-Postgraduate Program in Cardiovascular Surgery, Nossa Senhora da Conceição Hospital, Porto Alegre, RS, Brazil
- Department of Education and Research-Postgraduate Program in Technology Assessment for the Brazilian National Health System, Conceição Hospital Group, Porto Alegre, RS, Brazil
- Department of Cardiovascular Surgery, Nossa Senhora da Conceição Hospital, Porto Alegre, RS, Brazil
- Health Technology Assessment Center, Conceição Hospital Group, Porto Alegre, RS, Brazil
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5
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James TM, Stamou SC, Faber C, Nores MA. Whole Blood del Nido versus Cold Blood Microplegia in Adult Cardiac Surgery: A Propensity-Matched Analysis. Int J Angiol 2024; 33:29-35. [PMID: 38352642 PMCID: PMC10861296 DOI: 10.1055/s-0039-3400747] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
Objectives Few studies have evaluated the outcomes of whole blood microplegia in adult cardiac surgery. Our novel protocol includes removing the crystalloid portion and using the Quest Myocardial Protection System (MPS) for the delivery of del Nido additives in whole blood. This study sought to compare early and late clinical outcomes of whole blood del Nido microplegia (BDN) versus cold blood cardioplegia (CBC) following adult cardiac surgery. Materials and Methods A total of 361 patients who underwent cardiac surgery using BDN were compared with a contemporaneous control group of 934 patients receiving CBC. Propensity matching yielded 289 BDN and 289 CBC patients. Chi-square analysis and Fisher's exact test were performed to compare preoperative, operative, and postoperative characteristics on the matched data. Primary outcome was operative mortality, and secondary outcomes included clinical outcomes such as stroke, cardiac arrest, and intra-aortic balloon pump use. The Kaplan-Meier method was used to compare actuarial survival between the two groups using a log-rank test. Results After matching, preoperative characteristics and surgery type were similar between groups. Cardioplegia type did not affect the primary end point of operative mortality. The rate of postoperative intra-aortic balloon pump was lower in BDN patients compared with CBC patients (0 vs. 2%; p = 0.01). There was no difference in late survival. Conclusion Our novel protocol BDN was comparable with CBC, with similar clinical outcomes and no difference in operative mortality or actuarial survival. Further studies should evaluate the long-term outcomes of this technique.
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Affiliation(s)
- Taylor M. James
- Graduate Medical Education MD/MPH Program, University of Miami Miller School of Medicine, Miami, Florida
| | - Sotiris C. Stamou
- Department of Cardiothoracic Surgery, JFK Medical Center, Atlantis, Florida
| | - Cristiano Faber
- Department of Cardiothoracic Surgery, JFK Medical Center, Atlantis, Florida
| | - Marcos A. Nores
- Department of Cardiothoracic Surgery, JFK Medical Center, Atlantis, Florida
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6
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Osorio-Llanes E, Castellar-López J, Rosales W, Montoya Y, Bustamante J, Zalaquett R, Bravo-Sagua R, Riquelme JA, Sánchez G, Chiong M, Lavandero S, Mendoza-Torres E. Novel Strategies to Improve the Cardioprotective Effects of Cardioplegia. Curr Cardiol Rev 2024; 20:CCR-EPUB-137763. [PMID: 38275069 PMCID: PMC11071679 DOI: 10.2174/011573403x263956231129064455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 09/17/2023] [Accepted: 10/20/2023] [Indexed: 01/27/2024] Open
Abstract
The use of cardioprotective strategies as adjuvants of cardioplegic solutions has become an ideal alternative for the improvement of post-surgery heart recovery. The choice of the optimal cardioplegia, as well as its distribution mechanism, remains controversial in the field of cardiovascular surgery. There is still a need to search for new and better cardioprotective methods during cardioplegic procedures. New techniques for the management of cardiovascular complications during cardioplegia have evolved with new alternatives and additives, and each new strategy provides a tool to neutralize the damage after ischemia/reperfusion events. Researchers and clinicians have committed themselves to studying the effect of new strategies and adjuvant components with the potential to improve the cardioprotective effect of cardioplegic solutions in preventing myocardial ischemia/reperfusion-induced injury during cardiac surgery. The aim of this review is to explore the different types of cardioplegia, their protection mechanisms, and which strategies have been proposed to enhance the function of these solutions in hearts exposed to cardiovascular pathologies that require surgical alternatives for their corrective progression.
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Affiliation(s)
- Estefanie Osorio-Llanes
- Faculty of Exact and Natural Sciences, Grupo de Investigación Avanzada en Biomedicina, Universidad Libre Barranquilla, Atlantico, Colombia
| | - Jairo Castellar-López
- Faculty of Exact and Natural Sciences, Grupo de Investigación Avanzada en Biomedicina, Universidad Libre Barranquilla, Atlantico, Colombia
| | - Wendy Rosales
- Faculty of Exact and Natural Sciences, Grupo de Investigación Avanzada en Biomedicina, Universidad Libre Barranquilla, Atlantico, Colombia
| | - Yuliet Montoya
- Grupo de Dinámica Cardiovascular (GDC), Escuela de Ciencias de la Salud, Universidad Pontificia Bolivariana, Medellin, Colombia
| | - John Bustamante
- Grupo de Dinámica Cardiovascular (GDC), Escuela de Ciencias de la Salud, Universidad Pontificia Bolivariana, Medellin, Colombia
| | - Ricardo Zalaquett
- Department of Cardiovascular Diseases, Faculty of Medicine, Universidad Finis Terrae - Clínica Las Condes, Santiago, Chile
| | - Roberto Bravo-Sagua
- Advanced Center for Chronic Diseases (ACCDiS), Faculty of Chemical and Pharmaceutical Sciences & Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Laboratorio OMEGA, INTA, University of Chile, Santiago, Chile
| | - Jaime A. Riquelme
- Advanced Center for Chronic Diseases (ACCDiS), Faculty of Chemical and Pharmaceutical Sciences & Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Gina Sánchez
- Physiopathology Program, Institute of Biomedical Sciences (ICBM), Faculty of Medicine, University of Chile, Santiago, Chile
| | - Mario Chiong
- Advanced Center for Chronic Diseases (ACCDiS), Faculty of Chemical and Pharmaceutical Sciences & Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Sergio Lavandero
- Advanced Center for Chronic Diseases (ACCDiS), Faculty of Chemical and Pharmaceutical Sciences & Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Department of Internal Medicine (Cardiology Division), University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Evelyn Mendoza-Torres
- Advanced Center for Chronic Diseases (ACCDiS), Faculty of Chemical and Pharmaceutical Sciences & Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Faculty of Health Sciences, Grupo de Investigación Avanzada en Biomedicina, Universidad Libre Seccional Barranquilla, Barranquilla, Colombia
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In Vitro Antiproliferative Activity and Phytochemicals Screening of Extracts of the Freshwater Microalgae, Chlorochromonas danica. Appl Biochem Biotechnol 2023; 195:534-555. [PMID: 36103038 DOI: 10.1007/s12010-022-04137-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/28/2022] [Indexed: 01/13/2023]
Abstract
The present study was focused on the screening of phytochemicals, their quantitative estimation and analysis by LC-MS profile, and antiproliferative efficacy of the aqueous-ethanolic extracts of the microalgae, Chlorochromonas danica isolated from the freshwater body Tavanampalli. The aqueous-ethanol extract of Chlorochromonas danica showed the presence of flavonoids, phenols, and proteins. The total flavonoid content, total phenol content, and total protein content were determined to be 158.65 mg of quercetin equivalent, 15.75 mg of gallic acid equivalent, and 134.65 mg/g dry weight of the extract, respectively. The LC-MS analysis confirmed the presence of several major bioactive molecules including L-Histidine, D-glutamine, L-aspartic acid, adenine, adenosine, cotinine, guanine hypoxanthine, L-glutamic acid, nicotinamide, 4-Hydroxycoumarin, and Stearamide. The aqueous-ethanol extract of Chlorochromonas danica exhibited an IC50 values of 63.34 µg, 279.29 µg, 125.42 µg, 90.56 µg, and 95.58 µg against A375, A549, HeLa, HepG2, and HT29 cell lines respectively, compared to the positive control cisplatin with IC50 values of 3.56 µg, 4.65 µg, 3.88 µg, 4.87 µg, and 7.23 µg respectively. These data suggest that Chlorochromonas danica remains a promising drug candidate for the treatment of cancers, particularly melanoma (A375 cell line) that can be considered for purification of antiproliferative compound and further clinical trials for the discovery of novel antiproliferative drugs from cost-effective sources.
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Barbero C, Pocar M, Marchetto G, Cura Stura E, Calia C, Dalbesio B, Filippini C, Salizzoni S, Boffini M, Rinaldi M, Ricci D. Single-Dose St. Thomas Versus Custodiol® Cardioplegia for Right Mini-thoracotomy Mitral Valve Surgery. J Cardiovasc Transl Res 2023; 16:192-198. [PMID: 35939196 PMCID: PMC9944000 DOI: 10.1007/s12265-022-10296-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 07/23/2022] [Indexed: 11/24/2022]
Abstract
OBJECTIVE Custodiol® and St. Thomas cardioplegia are widely employed in mini-thoracotomy mitral valve (MV) operations. One-dose of the former provides 3 h of myocardial protection. Conversely, St. Thomas solution is usually reinfused every 30 min and safety of single delivery is unknown. We aimed to compare single-shot St. Thomas versus Custodiol® cardioplegia. METHODS Primary endpoint of the prospective observational study was cardiac troponin T level at different post-operative time-points. Propensity-weighted treatment served to adjust for confounding factors. RESULTS Thirty-nine patients receiving St. Thomas were compared with 25 patients receiving Custodiol® cardioplegia; cross-clamping always exceeded 45 min. No differences were found in postoperative markers of myocardial injury. Ventricular fibrillation at the resumption of electric activity was more frequent following Custodiol® cardioplegia (P = .01). CONCLUSION Effective myocardial protection exceeding 1 h of ischemic arrest can be achieved with a single-dose St. Thomas cardioplegia in selected patients undergoing right mini-thoracotomy MV surgery.
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Affiliation(s)
- Cristina Barbero
- Cardiovascular and Thoracic Department, Division of Cardiac Surgery, , Città Della Salute E Della Scienza", University of Turin, Corso Dogliotti, 14, Turin, Italy.
| | - Marco Pocar
- Cardiovascular and Thoracic Department, Division of Cardiac Surgery, , Città Della Salute E Della Scienza”, University of Turin, Corso Dogliotti, 14 Turin, Italy ,Department of Surgical Sciences, University of Turin, Turin, Italy ,Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Giovanni Marchetto
- Cardiovascular and Thoracic Department, Division of Cardiac Surgery, , Città Della Salute E Della Scienza”, University of Turin, Corso Dogliotti, 14 Turin, Italy
| | - Erik Cura Stura
- Cardiovascular and Thoracic Department, Division of Cardiac Surgery, , Città Della Salute E Della Scienza”, University of Turin, Corso Dogliotti, 14 Turin, Italy
| | - Claudia Calia
- Cardiovascular and Thoracic Department, Division of Cardiac Surgery, , Città Della Salute E Della Scienza”, University of Turin, Corso Dogliotti, 14 Turin, Italy ,Department of Surgical Sciences, University of Turin, Turin, Italy
| | - Bianca Dalbesio
- Cardiovascular and Thoracic Department, Division of Cardiac Surgery, , Città Della Salute E Della Scienza”, University of Turin, Corso Dogliotti, 14 Turin, Italy
| | | | - Stefano Salizzoni
- Cardiovascular and Thoracic Department, Division of Cardiac Surgery, , Città Della Salute E Della Scienza”, University of Turin, Corso Dogliotti, 14 Turin, Italy ,Department of Surgical Sciences, University of Turin, Turin, Italy
| | - Massimo Boffini
- Cardiovascular and Thoracic Department, Division of Cardiac Surgery, , Città Della Salute E Della Scienza”, University of Turin, Corso Dogliotti, 14 Turin, Italy ,Department of Surgical Sciences, University of Turin, Turin, Italy
| | - Mauro Rinaldi
- Cardiovascular and Thoracic Department, Division of Cardiac Surgery, , Città Della Salute E Della Scienza”, University of Turin, Corso Dogliotti, 14 Turin, Italy ,Department of Surgical Sciences, University of Turin, Turin, Italy
| | - Davide Ricci
- Department of Integrated Surgical and Diagnostic Sciences, University of Genova, Genoa, Italy
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9
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Beneficial Effects of RNS60 in Cardiac Ischemic Injury. Curr Issues Mol Biol 2022; 44:4877-4887. [PMID: 36286046 PMCID: PMC9600597 DOI: 10.3390/cimb44100331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/06/2022] [Accepted: 10/12/2022] [Indexed: 11/17/2022] Open
Abstract
RNS60 is a physically modified saline solution hypothesized to contain oxygen nanobubbles. It has been reported to reduce ischemia/reperfusion injury in a pig model of acute myocardial infarction. We investigated the effects of RNS60 during cardiac hypoxia in mice and as an additive to cardioplegic solution in rat hearts. ApoE−/−LDLr−/− mice were treated by intravenous injection of RNS60 or saline as a control while monitoring the ECG and post-hypoxic serum release of troponin T and creatine kinase activity. Hearts infused with Custodiol containing 10% RNS60 or saline as the control were subjected to 4 h of 4 °C preservation, followed by an assessment of myocardial metabolites, purine release, and mechanical function. RNS60 attenuated changes in the ECG STU area during hypoxia, while the troponin T concentration and creatine kinase activity were significantly higher in the serum of the controls. During reperfusion after 4 h of cold ischemia, the Custodiol/RNS60-treated hearts had about 30% lower LVEDP and better dp/dtmax and dp/dtmin together with a decreased release of purine catabolites vs. the controls. The myocardial ATP, total adenine nucleotides, and phosphocreatine concentrations were higher in the RNS60-treated hearts. This study indicates that RNS60 enhances cardioprotection in experimental myocardial hypoxia and under conditions of cardioplegic arrest. Improved cardiac energetics are involved in the protective effect, but complete elucidation of the mechanism requires further study.
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10
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Tan J, Bi S, Li J, Gu J, Wang Y, Xiong J, Yu X, Du L. Comparative effects of different types of cardioplegia in cardiac surgery: A network meta-analysis. Front Cardiovasc Med 2022; 9:996744. [PMID: 36176979 PMCID: PMC9513158 DOI: 10.3389/fcvm.2022.996744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 08/25/2022] [Indexed: 11/13/2022] Open
Abstract
ObjectiveTo compare the outcomes of four types of cardioplegia during cardiac surgery: del Nido (DN), blood cardioplegia (BC), histidine-tryptophan-ketoglutarate (HTK) and St. Thomas.MethodsRandomized controlled trials (RCTs) and observational cohort studies from 2005 to 2021 were identified in PubMed, Embase, and Cochrane databases. Data were extracted for the primary endpoint of perioperative mortality as well as the following secondary endpoints: atrial fibrillation, renal failure, stroke, use of an intra-aortic balloon pump, re-exploration, intensive care unit stay and hospital stay. A network meta-analysis comparing all four types of cardioplegia was performed, as well as direct meta-analysis comparing pairs of cardioplegia types.ResultsData were extracted from 18 RCTs and 49 observational cohort studies involving 18,191 adult patients (55 studies) and 1,634 children (12 studies). Among adult patients, risk of mortality was significantly higher for HTK (1.89, 95% CI 1.10, 3.52) and BC (RR 1.73, 95% CI 1.22, 2.79) than for DN. Risk of atrial fibrillation was significantly higher for BC (RR 1.41, 95% CI 1.09, 1.86) and DN (RR 1.51, 95% CI 1.15, 2.03) than for HTK. Among pediatric patients, no significant differences in endpoints were observed among the four types of cardioplegia.ConclusionsThis network meta-analysis suggests that among adult patients undergoing cardiac surgery, DN may be associated with lower perioperative mortality than HTK or BC, while risk of atrial fibrillation may be lower with HTK than with BC or DN.
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Affiliation(s)
- Jia Tan
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
| | - Siwei Bi
- Department of Burn and Plastic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Jingyi Li
- West China School of Medicine, Sichuan University, Chengdu, China
| | - Jun Gu
- Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Yishun Wang
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
| | - Jiyue Xiong
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
| | - Xiang Yu
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
| | - Lei Du
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
- *Correspondence: Lei Du
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Does prophylactic low-dose amiodarone decrease the incidence of postoperative atrial fibrillation after coronary artery bypass graft surgery? A randomized controlled trial. THE CARDIOTHORACIC SURGEON 2022. [DOI: 10.1186/s43057-022-00085-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Postoperative atrial fibrillation (POAF) occurs within 1 to 5 days after coronary artery bypass grafting (CABG), with a peak occurrence on the second day. This research aimed to assess the role of dose-low amiodarone in the prevention of POAF after CABG.
Methods
This randomized controlled blind-single study was carried out on 150 patients undergoing elective CABG with sinus rhythm. Cases were randomized into two equal groups. The placebo group received matching placebo tablets. The amiodarone group received a prophylactic oral amiodarone 5 mg/kg/day for 6 days before and 6 days after surgery.
Results
The incidence of POAF was significantly lower in the amiodarone group compared to the placebo group (16% vs 33.3%, P = 0.013) with a relative risk of 0.48 times (95% confidence interval: 0.26–0.88). The onset of POAF, percent of patients responded to medication, and time elapsed to respond to medication were insignificantly different between both groups. The mean (± SD) of ICU stay was 2.51 ± 1.11 days in the amiodarone group versus 3.31 ± 1.83 days in the placebo group, and the mean (± SD) of hospital stay duration was 10 ± 1.99 days in the amiodarone group versus 12.72 ± 2.23 days in the placebo group. The length of ICU admission and hospital stay was significantly lower in the amiodarone group than in the placebo group (P = 0.002 and < 0.001, respectively).
Conclusions
Low-dose oral amiodarone was effective in POAF prevention after CABG with a lower length of ICU admission and hospital stay.
Trial registration
Pan African Clinical Trials Register PACTR202101651961317. Registered on 21 January 2021
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Improvement of Left Ventricular Graft Function Using an Iron-Chelator-Supplemented Bretschneider Solution in a Canine Model of Orthotopic Heart Transplantation. Int J Mol Sci 2022; 23:ijms23137453. [PMID: 35806458 PMCID: PMC9267501 DOI: 10.3390/ijms23137453] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 06/23/2022] [Accepted: 06/30/2022] [Indexed: 12/04/2022] Open
Abstract
Demand for organs is increasing while the number of donors remains constant. Nevertheless, not all organs are utilized due to the limited time window for heart transplantation (HTX). Therefore, we aimed to evaluate whether an iron-chelator-supplemented Bretschneider solution could protect the graft in a clinically relevant canine model of HTX with prolonged ischemic storage. HTX was performed in foxhounds. The ischemic time was standardized to 4 h, 8 h, 12 h or 16 h, depending on the experimental group. Left ventricular (LV) and vascular function were measured. Additionally, the myocardial high energy phosphate and iron content and the in-vitro myocyte force were evaluated. Iron chelator supplementation proved superior at a routine preservation time of 4 h, as well as for prolonged times of 8 h and longer. The supplementation groups recovered quickly compared to their controls. The LV function was preserved and coronary blood flow increased. This was also confirmed by in vitro myocyte force and vasorelaxation experiments. Additionally, the biochemical results showed significantly higher adenosine triphosphate content in the supplementation groups. The iron chelator LK614 played an important role in this mechanism by reducing the chelatable iron content. This study shows that an iron-chelator-supplemented Bretschneider solution effectively prevents myocardial/endothelial damage during short- as well as long-term conservation.
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13
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Theoretical and Practical Aspects in the Use of Bretschneider Cardioplegia. J Cardiovasc Dev Dis 2022; 9:jcdd9060178. [PMID: 35735807 PMCID: PMC9225441 DOI: 10.3390/jcdd9060178] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 05/01/2022] [Accepted: 05/26/2022] [Indexed: 02/01/2023] Open
Abstract
The race for an ideal cardioplegic solution has remained enthusiastic since the beginning of the modern cardiac surgery era. The Bretschneider solution, belonging to the “intracellular cardioplegic” group, is safe and practical in myocardial protection during ischemic time. Over time, some particular concerns have arisen regarding the effects on cardiac metabolism and postoperative myocardial functioning. This paper reviews the most important standpoints in terms of theoretical and practical analyses.
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Almeida AS, Ceron RO, Anschau F, Kopittke L, Lira KB, Delvaux RS, Rode J, Rey RAW, Wittke EI, Rombaldi AR. Comparison between Custodiol, del Nido and modified del Nido in the myocardial protection - Cardioplegia Trial: a study protocol for a randomised, double-blind clinical trial. BMJ Open 2021; 11:e047942. [PMID: 34489276 PMCID: PMC8422325 DOI: 10.1136/bmjopen-2020-047942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
INTRODUCTION Myocardial protection is essential for successful cardiac surgery, and the search for an ideal cardioplegic solution has continued since its beginning. In this context, Custodiol, del Nido and modified del Nido are single-dose cardioplegic solutions with good safety profiles and great relevance in modern surgical practice. While these solutions have all been evaluated for their impact on patient outcomes independently, limited research exists comparing them directly. Thus, the present study aims to examine the effects of these cardioplegic solutions on myocardial protection and clinical outcomes in adult patients undergoing elective cardiac surgery. The assessment of the increase in myocardial injury biomarkers in patients submitted to all treatment methods may be considered a major strength of our study. METHODS AND ANALYSIS This is a clinical trial study protocol that will compare myocardial protection and clinical outcomes among three patient groups based on which cardioplegic solution was used. Patients will be randomised to receive del Nido (n=30), modified del Nido (n=30) or Custodiol (n=30). Myocardial injury biomarkers will be measured at the baseline and 2 hours, 12 hours and 24 hours after the cardiopulmonary bypass. Clinical outcomes will be assessed during the trans operative period and the intensive care unit stay, in addition to other haematological parameters. ETHICS AND DISSEMINATION This protocol and its related documents were approved by the Research Ethics Committee of the Hospital Nossa Senhora da Conceição, Brazil, registered under no. 4.029.545. The findings of this study will be published in a peer-reviewed journal in the related field. TRIAL REGISTRATION NUMBER RBR-7g5s66.
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Affiliation(s)
- Adriana Silveira Almeida
- Cardiothoracic Surgery Division, Hospital Nossa Senhora da Conceição, Porto Alegre, Rio Grande do Sul, Brazil
- Health Technology Assessment Center (NATS) and Education and Research Center (GEP), Hospital Nossa Senhora da Conceição, Porto Alegre, Rio Grande do Sul, Brazil
| | - Rafael Oliveira Ceron
- Cardiothoracic Surgery Division, Hospital Nossa Senhora da Conceição, Porto Alegre, Rio Grande do Sul, Brazil
| | - Fernando Anschau
- Health Technology Assessment Center (NATS) and Education and Research Center (GEP), Hospital Nossa Senhora da Conceição, Porto Alegre, Rio Grande do Sul, Brazil
| | - Luciane Kopittke
- Health Technology Assessment Center (NATS) and Education and Research Center (GEP), Hospital Nossa Senhora da Conceição, Porto Alegre, Rio Grande do Sul, Brazil
| | - Kathize Betti Lira
- Cardiothoracic Surgery Division, Hospital Nossa Senhora da Conceição, Porto Alegre, Rio Grande do Sul, Brazil
| | - Renan Senandes Delvaux
- Cardiothoracic Surgery Division, Hospital Nossa Senhora da Conceição, Porto Alegre, Rio Grande do Sul, Brazil
| | - Juarez Rode
- Cardiothoracic Surgery Division, Hospital Nossa Senhora da Conceição, Porto Alegre, Rio Grande do Sul, Brazil
| | | | - Estefânia Inês Wittke
- Cardiothoracic Surgery Division, Hospital Nossa Senhora da Conceição, Porto Alegre, Rio Grande do Sul, Brazil
| | - Alfeu Roberto Rombaldi
- Cardiothoracic Surgery Division, Hospital Nossa Senhora da Conceição, Porto Alegre, Rio Grande do Sul, Brazil
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Abstract
There is considerable interest and demand in the application of minimally invasive techniques in cardiac surgery driven by multiple factors including patient cosmesis and satisfaction, reduction of surgical trauma and the development of specialized instrumentation that allows these procedures to be performed safely. Minimally invasive mitral valve surgery (MIMVS) has been conducted for more than 25 years and has been shown to offer multiple benefits including better cosmetic results, enhanced post-operative recovery, improved patient satisfaction and most importantly, equivalent clinical outcomes with regards to quality and safety when compared to the standard sternotomy approach. MIMVS may be particularly beneficial in certain subgroups of patients, for example patients undergoing redo mitral valve surgery. In this article, we discuss patient selection criteria for MIMVS, the merits and drawbacks of MIMVS relative to conventional sternotomy approaches, and detail procedural aspects including anaesthetic management, intraoperative technique, and important considerations in myocardial protection and cardiopulmonary bypass (CPB). When considering developing a MIMVS programme, as for any new technique, a team approach to the introduction of the programme is essential. Although it is clear that patient selection is important, particularly early in a surgical programme, with experience complex repairs can be performed through a minimally invasive approach with excellent outcomes.
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Affiliation(s)
- Yasir Abu-Omar
- University Hospitals Cleveland Medical Center, Cleveland, OH, USA
| | - Ibrahim T Fazmin
- Department of Cardiothoracic Surgery, Royal Papworth Hospital, Cambridge, UK
| | - Jason M Ali
- Department of Cardiothoracic Surgery, Royal Papworth Hospital, Cambridge, UK
| | - Marc P Pelletier
- University Hospitals Cleveland Medical Center, Cleveland, OH, USA
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16
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Holeček M. Histidine in Health and Disease: Metabolism, Physiological Importance, and Use as a Supplement. Nutrients 2020; 12:nu12030848. [PMID: 32235743 PMCID: PMC7146355 DOI: 10.3390/nu12030848] [Citation(s) in RCA: 181] [Impact Index Per Article: 45.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 03/19/2020] [Accepted: 03/20/2020] [Indexed: 12/19/2022] Open
Abstract
L-histidine (HIS) is an essential amino acid with unique roles in proton buffering, metal ion chelation, scavenging of reactive oxygen and nitrogen species, erythropoiesis, and the histaminergic system. Several HIS-rich proteins (e.g., haemoproteins, HIS-rich glycoproteins, histatins, HIS-rich calcium-binding protein, and filaggrin), HIS-containing dipeptides (particularly carnosine), and methyl- and sulphur-containing derivatives of HIS (3-methylhistidine, 1-methylhistidine, and ergothioneine) have specific functions. The unique chemical properties and physiological functions are the basis of the theoretical rationale to suggest HIS supplementation in a wide range of conditions. Several decades of experience have confirmed the effectiveness of HIS as a component of solutions used for organ preservation and myocardial protection in cardiac surgery. Further studies are needed to elucidate the effects of HIS supplementation on neurological disorders, atopic dermatitis, metabolic syndrome, diabetes, uraemic anaemia, ulcers, inflammatory bowel diseases, malignancies, and muscle performance during strenuous exercise. Signs of toxicity, mutagenic activity, and allergic reactions or peptic ulcers have not been reported, although HIS is a histamine precursor. Of concern should be findings of hepatic enlargement and increases in ammonia and glutamine and of decrease in branched-chain amino acids (valine, leucine, and isoleucine) in blood plasma indicating that HIS supplementation is inappropriate in patients with liver disease.
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Affiliation(s)
- Milan Holeček
- Department of Physiology, Faculty of Medicine in Hradec Králové, Charles University, Šimkova 870, 500 38 Hradec Kralove, Czech Republic
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17
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Kappler B, Ledezma CA, van Tuijl S, Meijborg V, Boukens BJ, Ergin B, Tan PJ, Stijnen M, Ince C, Díaz-Zuccarini V, de Mol BAJM. Investigating the physiology of normothermic ex vivo heart perfusion in an isolated slaughterhouse porcine model used for device testing and training. BMC Cardiovasc Disord 2019; 19:254. [PMID: 31711426 PMCID: PMC6849278 DOI: 10.1186/s12872-019-1242-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 10/31/2019] [Indexed: 11/10/2022] Open
Abstract
Background The PhysioHeart™ is a mature acute platform, based isolated slaughterhouse hearts and able to validate cardiac devices and techniques in working mode. Despite perfusion, myocardial edema and time-dependent function degradation are reported. Therefore, monitoring several variables is necessary to identify which of these should be controlled to preserve the heart function. This study presents biochemical, electrophysiological and hemodynamic changes in the PhysioHeart™ to understand the pitfalls of ex vivo slaughterhouse heart hemoperfusion. Methods Seven porcine hearts were harvested, arrested and revived using the PhysioHeart™. Cardiac output, SaO2, glucose and pH were maintained at physiological levels. Blood analyses were performed hourly and unipolar epicardial electrograms (UEG), pressures and flows were recorded to assess the physiological performance. Results Normal cardiac performance was attained in terms of mean cardiac output (5.1 ± 1.7 l/min) and pressures but deteriorated over time. Across the experiments, homeostasis was maintained for 171.4 ± 54 min, osmolarity and blood electrolytes increased significantly between 10 and 80%, heart weight increased by 144 ± 41 g, free fatty acids (− 60%), glucose and lactate diminished, ammonia increased by 273 ± 76% and myocardial necrosis and UEG alterations appeared and aggravated. Progressively deteriorating electrophysiological and hemodynamic functions can be explained by reperfusion injury, waste product intoxication (i.e. hyperammonemia), lack of essential nutrients, ion imbalances and cardiac necrosis as a consequence of hepatological and nephrological plasma clearance absence. Conclusions The PhysioHeart™ is an acute model, suitable for cardiac device and therapy assessment, which can precede conventional animal studies. However, observations indicate that ex vivo slaughterhouse hearts resemble cardiac physiology of deteriorating hearts in a multi-organ failure situation and signalize the need for plasma clearance during perfusion to attenuate time-dependent function degradation. The presented study therefore provides an in-dept understanding of the sources and reasons causing the cardiac function loss, as a first step for future effort to prolong cardiac perfusion in the PhysioHeart™. These findings could be also of potential interest for other cardiac platforms.
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Affiliation(s)
- Benjamin Kappler
- Department Cardiothoracic Surgery, Amsterdam University Medical Center, Meibergdreef 9, Amsterdam, The Netherlands. .,LifeTec Group B.V, Eindhoven, The Netherlands.
| | - Carlos A Ledezma
- Department of Mechanical Engineering, University College London, Torrington Place, London, UK
| | | | - Veronique Meijborg
- Department of Medical Biology, Amsterdam University Medical Center, Meibergdreef 9, Amsterdam, The Netherlands
| | - Bastiaan J Boukens
- Department of Medical Biology, Amsterdam University Medical Center, Meibergdreef 9, Amsterdam, The Netherlands
| | - Bülent Ergin
- Department of Translational Physiology, Amsterdam University Medical Center, Meibergdreef 9, Amsterdam, The Netherlands
| | - P J Tan
- Department of Mechanical Engineering, University College London, Torrington Place, London, UK
| | | | - Can Ince
- Department of Translational Physiology, Amsterdam University Medical Center, Meibergdreef 9, Amsterdam, The Netherlands
| | - Vanessa Díaz-Zuccarini
- Department of Mechanical Engineering, University College London, Torrington Place, London, UK. .,WEISS Centre for Surgical and Interventional Sciences, UCL, Gower Street 10, London, UK.
| | - Bas A J M de Mol
- Department Cardiothoracic Surgery, Amsterdam University Medical Center, Meibergdreef 9, Amsterdam, The Netherlands.,LifeTec Group B.V, Eindhoven, The Netherlands
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High-resolution respirometry in human endomyocardial biopsies shows reduced ventricular oxidative capacity related to heart failure. Exp Mol Med 2019; 51:1-10. [PMID: 30765687 PMCID: PMC6376010 DOI: 10.1038/s12276-019-0214-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 08/17/2018] [Accepted: 10/01/2018] [Indexed: 02/07/2023] Open
Abstract
The lifetime risk of developing heart failure is approximately 20%, and survival rates remain poor. Myocardial mitochondrial function has been suggested to play a pivotal role in heart failure pathophysiology. Human studies on ex vivo mitochondrial function have mostly been limited to atrial tissue obtained during open heart surgery and have provided contradictory results. This study aimed at measuring myocardial mitochondrial function in transcatheter ventricular endomyocardial biopsies and assessing the relationship between oxidative capacity and heart function. We enrolled 40 heart failure patients undergoing ventricular assist device surgery or heart transplantation (34 males, age 57 ± 11 years, body mass index 26.6 ± 4.8 kg/m2) and 29 heart transplant recipients of comparable age and body mass index with normal left ventricular function undergoing surveillance biopsies (23 males, 57 ± 12 years, body mass index 26.2 ± 4.1 kg/m2). High-resolution respirometry was established in the myocardium to measure oxidative capacity ex vivo. The mitochondrial oxidative capacity was 90% higher in ventricular compared to atrial tissues (n = 11, p < 0.01) of explanted hearts. Respiration rates were comparable in ventricular samples of heart failure patients obtained during open heart surgery by standard tissue preparation or ex vivo endomyocardial biopsy (r = 0.9988, p < 0.0001, n = 8), and the mitochondrial oxidative capacity in samples from these patients remained stable for 8 h when stored in either of two common preservation buffers. The oxidative capacity was 44% lower in heart failure than in transplant recipients (67 ± 3 vs. 97 ± 5 pmol/[s mg], p < 0.0001) and correlated positively with heart function (r = 0.49, p < 0.01). High-resolution respirometry of ventricular tissue is feasible in transcatheter biopsies, facilitating clinical studies on myocardial mitochondrial function in patients not undergoing heart surgery. The capacity of mitochondria in heart muscle cells to use oxygen to produce energy correlates with cardiac function. Julia Szendroedi at Heinrich-Heine University, Düsseldorf, Germany, and colleagues have established a technique to reliably evaluate mitochondrial energy metabolism in patients with or recovering from heart failure. They showed that the mitochondrial oxidative capacity of cells in the lower heart chambers (ventricles) was significantly higher than in the upper heart chambers (atria). Moreover, they found that mitochondrial oxidative capacity was reduced by 44% in heart muscle biopsies from patients with heart failure compared with biopsies from heart transplant recipients with normal ventricular function. Stimulating the respiration rate of mitochondria in ventricular heart cells could be a promising strategy for improving cardiac function.
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Carmo HPD, Reichert K, Carvalho DDD, Silveira-Filho LDM, Vilarinho K, Oliveira P, Petrucci O. Lidocaine and Pinacidil Added to Blood versus Crystalloid Cardioplegic Solutions: Study in Isolated Hearts. Braz J Cardiovasc Surg 2019; 33:211-216. [PMID: 30043912 PMCID: PMC6089128 DOI: 10.21470/1678-9741-2017-0244] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 12/29/2017] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVE The present study aimed the functional recovery evaluation after long term of cardiac arrest induced by Custodiol (crystalloid-based) versus del Nido (blood-based) solutions, both added lidocaine and pinacidil as cardioplegic agents. Experiments were performed in isolated rat heart perfusion models. METHODS Male rat heart perfusions, according to Langendorff technique, were induced to cause 3 hours of cardiac arrest with a single dose. The hearts were assigned to one of the following three groups: (I) control; (II) Custodiol-LP; and (III) del Nido-LP. They were evaluated after ischemia throughout 90 minutes of reperfusion. Left ventricular contractility function was reported as percentage of recovery, expressed by developed pressure, maximum dP/dt, minimum dP/dt, and rate pressure product variables. In addition, coronary resistance and myocardial injury marker by alpha-fodrin degradation were also evaluated. RESULTS At 90 minutes of reperfusion, both solutions had superior left ventricular contractile recovery function than the control group. Del Nido-LP was superior to Custodiol-LP in maximum dP/dt (46%±8 vs. 67%±7, P<0.05) and minimum dP/dt (31%±4 vs. 51%±9, P<0.05) variables. Coronary resistance was lower in del Nido-LP group than in Custodiol-LP (395%±50 vs. 307%±13, P<0.05), as well as alpha-fodrin degradation, with lower levels in del Nido-LP group (P<0.05). CONCLUSION Del Nido-LP cardioplegia showed higher functional recovery after 3 hours of ischemia. The analysis of alpha-fodrin degradation showed del Nido-LP solution provided greater protection against myocardial ischemia and reperfusion (IR) in this experimental model.
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Affiliation(s)
| | - Karla Reichert
- Universidade Estadual de Campinas (Unicamp), Campinas, SP, Brazil
| | | | | | - Karlos Vilarinho
- Universidade Estadual de Campinas (Unicamp), Campinas, SP, Brazil
| | - Pedro Oliveira
- Universidade Estadual de Campinas (Unicamp), Campinas, SP, Brazil
| | - Orlando Petrucci
- Universidade Estadual de Campinas (Unicamp), Campinas, SP, Brazil
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20
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Maltesen RG, Buggeskov KB, Andersen CB, Plovsing R, Wimmer R, Ravn HB, Rasmussen BS. Lung Protection Strategies during Cardiopulmonary Bypass Affect the Composition of Bronchoalveolar Fluid and Lung Tissue in Cardiac Surgery Patients. Metabolites 2018; 8:metabo8040054. [PMID: 30241409 PMCID: PMC6316472 DOI: 10.3390/metabo8040054] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 08/31/2018] [Accepted: 09/19/2018] [Indexed: 11/18/2022] Open
Abstract
Pulmonary dysfunction is among the most frequent complications to cardiac surgeries. Exposure of blood to the cardiopulmonary bypass (CPB) circuit with subsequent lung ischemia-reperfusion leads to the production of inflammatory mediators and increases in microvascular permeability. The study aimed to elucidate histological, cellular, and metabolite changes following two lung protective regimens during CPB with Histidine-Tryptophan-Ketoglutarate (HTK) enriched or warm oxygenated blood pulmonary perfusion compared to standard regimen with no pulmonary perfusion. A total of 90 patients undergoing CPB were randomized to receiving HTK, oxygenated blood or standard regimen. Of these, bronchoalveolar lavage fluid (BALF) and lung tissue biopsies were obtained before and after CPB from 47 and 25 patients, respectively. Histopathological scores, BALF cell counts and metabolite screening were assessed. Multivariate and univariate analyses were performed. Profound histological, cellular, and metabolic changes were identified in all patients after CPB. Histological and cellular changes were similar in the three groups; however, some metabolite profiles were different in the HTK patients. While all patients presented an increase in inflammatory cells, metabolic acidosis, protease activity and oxidative stress, HTK patients seemed to be protected against severe acidosis, excessive fatty acid oxidation, and inflammation during ischemia-reperfusion. Additional studies are needed to confirm these findings.
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Affiliation(s)
- Raluca G Maltesen
- Department of Anesthesia and Intensive Care Medicine, Aalborg University Hospital, 9000 Aalborg, Denmark.
| | - Katrine B Buggeskov
- Department of Cardiothoracic Anesthesia, Heart Centre, Rigshospitalet, 2100 Copenhagen, Denmark.
| | - Claus B Andersen
- Department of Forensic Medicine, University of Copenhagen, 2100 Copenhagen, Denmark.
| | - Ronni Plovsing
- Department of Intensive Care, Rigshospitalet, University of Copenhagen, 2100 Copenhagen, Denmark.
- Department of Anesthesiology, Hvidovre Hospital, University of Copenhagen, 2650 Hvidovre, Denmark.
| | - Reinhard Wimmer
- Department of Chemistry and Bioscience, Aalborg University, 9220 Aalborg, Denmark.
| | - Hanne B Ravn
- Department of Cardiothoracic Anesthesia, Heart Centre, Rigshospitalet, 2100 Copenhagen, Denmark.
| | - Bodil S Rasmussen
- Department of Anesthesia and Intensive Care Medicine, Aalborg University Hospital, 9000 Aalborg, Denmark.
- Department of Clinical Medicine, School of Medicine and Health, Aalborg University, 9220 Aalborg, Denmark.
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López-Menéndez J, Miguelena J, Morales C, Callejo F, Silva J. Myocardial protection in on-pump coronary artery bypass grafting surgery: analysis of the effectiveness of the use of retrograde Celsior ®. Ther Adv Cardiovasc Dis 2018; 12:263-273. [PMID: 30081729 DOI: 10.1177/1753944718792428] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND We analyzed the adequacy of the myocardial protection achieved with a single dose of retrograde crystalloid Celsior®, compared with an accepted standard (microplegia), in on-pump coronary artery bypass grafting surgery (CABG). METHODS This was a retrospective comparative clinical study conducted in a single institution that included all the patients operated on who had elective isolated on-pump CABG, from March 2006 to June 2014. We evaluated maximum postoperative troponin T (TnT) as a marker of myocardial damage, adjusted for possible confounders using propensity score matching. We also analyzed markers of recovery of myocardial function, and the safety of the intravenous use of Celsior®. RESULTS During the study period, 261 patients were included, divided in two groups: (a) continuous retrograde blood-based microplegia (114 patients); (b) retrograde single-dose crystalloid Celsior® (147 patients). The propensity score adjusted maximum TnT was significantly lower in the Celsior group [average treatment effect = -0.55 ng/dl; 95% confidence interval (CI) -1.10 to -0.1 ng/dl; p = 0.048]. There were no differences in the postoperative use of intra-aortic balloon of counterpulsation or in the requirements of high-dose inotropic medications. In-hospital mortality was equivalent in both study groups ( p = 0.73); surgical re-exploration because of bleeding was equivalent ( p = 0.37). There were no differences in prolonged mechanical ventilation ( p = 0.65) and intensive care unit length of stay ( p = 0.87). CONCLUSION An isolated single dose of retrograde Celsior® may be an effective and safe myocardial protection strategy in on-pump CABG.
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Affiliation(s)
- José López-Menéndez
- Cardiac Surgery, Hospital Universitario Ramón y Cajal, Carretera de Colmenar Viejo, Km 9.7, Madrid 28034, Spain
| | - Javier Miguelena
- Cardiac Surgery, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - Carlos Morales
- Cardiac Surgery, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - Francisco Callejo
- Cardiac Surgery, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - Jacobo Silva
- Cardiac Surgery, Hospital Universitario Central de Asturias, Oviedo, Spain
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Clinical Outcomes and Electrolyte Balance Factors in Complex Cardiac Operations in Adults; Del Nido® Versus Custodiol® Cardioplegia Solutions: A Randomized Controlled Clinical Trial. IRANIAN RED CRESCENT MEDICAL JOURNAL 2018. [DOI: 10.5812/ircmj.64648] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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Warm blood cardioplegia versus cold crystalloid cardioplegia for myocardial protection during coronary artery bypass grafting surgery. Cell Death Discov 2018. [PMID: 29531820 PMCID: PMC5841304 DOI: 10.1038/s41420-018-0031-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
We retrospectively analyzed early results of coronary artery bypass grafting (CABG) surgery using two different types of cardioplegia for myocardial protection: antegrade intermittent warm blood or cold crystalloid cardioplegia. From January 2015 to October 2016, 330 consecutive patients underwent isolated on-pump CABG. Cardiac arrest was obtained with use of warm blood cardioplegia (WBC group, n = 297) or cold crystalloid cardioplegia (CCC group, n = 33), according to the choice of the surgeon. Euroscore II and preoperative characteristics were similar in both groups, except for the creatinine clearance, slightly lower in WBC group (77.33 ± 27.86 mL/min versus 88.77 ± 51.02 mL/min) (P < 0.05). Complete revascularization was achieved in both groups. In-hospital mortality was 2.0% (n = 6) in WBC group, absent in CCC group. The required mean number of cardioplegia’s doses per patient was higher in WBC group (2.3 ± 0.8) versus CCC group (2.0 ± 0.7) (P = 0.045), despite a lower number of distal coronary artery anastomoses (2.7 ± 0.8 versus 3.2 ± 0.9) (P = 0.0001). Cardiopulmonary and aortic cross-clamp times were similar in both groups. The incidence of perioperative myocardial infarction (WBC group 3.4% versus CCC group 3.0%) and low cardiac output syndrome (4.4% versus 3.0%) were similar in both groups. As compared with WBC group, in CCC group CK-MB/CK ratio >10% was lower during each time points of evaluation, with a statistical significant difference at time 0 (4% ± 1.6% versus 5% ± 2.5%) (P = 0.021). In presence of complete revascularization, despite the value of CK-MB/CK ratio >10% was less in the CCC group, clinical results were not affected by both types of cardioplegia adopted to myocardial protection. As compared with cold crystalloid, warm blood cardioplegia requires a shorter interval of administration to achieve better myocardial protection.
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Comentale G, Giordano R, Palma G. Comparison of the different cardioplegic strategies in cardiac valves surgery: who wins the "arm-wrestling"? J Thorac Dis 2018; 10:714-717. [PMID: 29607140 DOI: 10.21037/jtd.2018.01.133] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Giuseppe Comentale
- Adult and Pediatric Cardiac Surgery, Department of Advanced Biomedical Sciences, University of Naples "Federico II", Naples, Italy
| | - Raffaele Giordano
- Adult and Pediatric Cardiac Surgery, Department of Advanced Biomedical Sciences, University of Naples "Federico II", Naples, Italy
| | - Gaetano Palma
- Adult and Pediatric Cardiac Surgery, Department of Advanced Biomedical Sciences, University of Naples "Federico II", Naples, Italy
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Protective effect of HTK solution on postoperative pulmonary function in infants with CHD and PAH. Biosci Rep 2017; 37:BSR20170984. [PMID: 29089468 PMCID: PMC5740778 DOI: 10.1042/bsr20170984] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 10/30/2017] [Accepted: 10/31/2017] [Indexed: 12/02/2022] Open
Abstract
Objective: In the present study, we aimed to investigate the effect of pulmonary arterial perfusion (PAP) with Histidine–tryptophan–ketoglutarate (HTK) on lung protection in infants with congenital heart disease (CHD) and pulmonary arterial hypertension (PAH) after cardiopulmonary bypass (CPB). Methods: Fifty infant patients with CHD and PAH at our hospital from January, 2016 to February, 2017 were randomly divided into control group and HTK group. The levels of interleukin-6 (IL-6), malondialdehyde (MDA), and endothelin-1 (ET-1) in serum were detected using ELISA Kit. Oxygen index (OI) and respiratory index (RI) were calculated at each time point. The time of postoperative mechanical ventilation and ICU stay was counted, and the right lower lung tissues in patients were taken for pathological examination. Results: Compared with preanesthesia, the levels of IL-6, MDA, and ET-1 in the two groups were significantly increased after CPB, and their levels in HTK group were significantly lower than that in control group. Moreover, OI in control group decreased markedly and RI in control group increased significantly after CPB. Compared with control group, the postoperative mechanical ventilation time, postoperative ICU stay, and total hospital stay in HTK group were markedly short. In addition, inflammatory cells infiltration decreased and pulmonary interstitial showed mild edema in HTK group. Conclusion: PAP with HTK could effectively reduce CPB-induced lung injury and improve lung function.
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Stammers AH, Tesdahl EA, Mongero LB, Stasko AJ, Weinstein S. Does the Type of Cardioplegic Technique Influence Hemodilution and Transfusion Requirements in Adult Patients Undergoing Cardiac Surgery? THE JOURNAL OF EXTRA-CORPOREAL TECHNOLOGY 2017; 49:231-240. [PMID: 29302113 PMCID: PMC5737423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Accepted: 07/10/2017] [Indexed: 06/07/2023]
Abstract
During cardiac surgery, myocardial protection is performed using diverse cardioplegic (CP) solutions with and without the presence of blood. New CP formulations extend ischemic intervals but use high-volume, crystalloid-based solutions. The present study evaluated four commonly used CP solutions and their effect on hemodilution during cardiopulmonary bypass (CPB). Records from 16,670 adult patients undergoing cardiac surgery with CPB between February 2016 and January 2017 were reviewed. Patients were classified into one of four groups according to CP type: 4-1 blood to crystalloid (4:1), microplegia (MP), del Nido (DN) and histidine-tryptophan-ketoglutarate (HTK). Covariate-adjusted estimates of group differences were calculated using multivariable logistic and linear mixed effects regression models. The primary end point was intraoperative transfusion of allogeneic red blood cells (RBCs), with a secondary end point of intraoperative hematocrit change. Among all patients, 8,350 (50.1%) received 4:1, 4,606 (27.6%) MP, 3,344 (20.1%) DN, and 370 (2.2%) HTK. Both 4:1 and MP were more likely to be used in patients undergoing coronary revascularization surgery, whereas DN and HTK were seen more often in patients undergoing valve surgery (p < .001). The highest volume of crystalloid CP solution was seen in the HTK group, 2,000 [1,754, 2200], whereas MP had the lowest, 50 [32, 67], p < .001. Ultrafiltration usage was as follows: HTK-84.9%. DN-83.7%, MP-40.1%, and 4:1-34.0%, p < .001. There were no statistically significant differences on the primary outcome risk of intraoperative RBC transfusion. However, statistically significant differences among all but one of the pair-wise comparisons of CP methods on hematocrit change (p < .05 or smaller), with MP having the lowest predicted drift (-7.8%) and HTK having the highest (-9.4%). During cardiac surgery, the administration of different CP formulations results in varying intraoperative hematocrit changes related to the volume of crystalloid solution administered.
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Lerman DA, Otero-Losada M, Ume K, Salgado PA, Prasad S, Lim K, Péault B, Alotti N. Is cold blood cardioplegia absolutely superior to cold crystalloid cardioplegia in aortic valve surgery? THE JOURNAL OF CARDIOVASCULAR SURGERY 2017; 59:115-120. [PMID: 28548476 DOI: 10.23736/s0021-9509.17.09979-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Experimental evidence suggests that blood cardioplegia (BCP) may be superior to cold crystalloid cardioplegia (CCP) for myocardial protection. However, robust clinical data are lacking. We compared postoperative outcome of patients undergoing aortic valve replacement (AVR) using cold anterograde-retrograde intermittent BCP versus anterograde (CCP). METHODS Adult consecutive isolated AVR performed between April 2006 and February 2011 at the Royal Infirmary Hospital of Edinburgh were retrospectively analyzed. The use of anterograde CCP was compared with that of intermittent anterograde-retrograde cold BCP. End points were intra-operative mortality, 30-day hospital re-admission, need for RBC or platelet transfusion, mechanical ventilation time and renal failure. RESULTS Of total 774 cases analyzed, 592 cases of BCP and 182 cases of CCP were identified. Demographics did not differ between groups (mean age: 67±12 years in CCP and 69±12 years in BCP). Groups (BCP vs. CCP) were indistinguishable (P>0.05, not significant) based on: average aortic cross clamp time 77.01±14.47 vs. 75.78±18.78 minutes, cardiopulmonary bypass time 104.07±43.70 vs. 100.34±25.90 minutes, surgery time 190.53±61.80 vs. 204.04±51.09 minutes and postoperative total blood consumption 1.38±2.11 vs. 1.61±2.4 units. The percentage of patients who required platelets' transfusion was similar: 12.8% BCP and 18.7% CCP (Fisher's exact test, P=0.053). Prevalence of respiratory failure was lower in BCP than in CCP: 2.6% vs. 6.3% (P=0.028). Admission time (days) at ICU was 3.63± 21.90 in BCP and 3.07±8.04 in CCP (not significant). Intra-hospital mortality, 30-day hospital re-admission, renal failure, sepsis, wound healing and stroke did not differ between groups. CONCLUSIONS BCP was strictly not superior to CCP in every aspect. In particular it was definitely not superior in terms of postoperative ventricular function. Our results question the absolute superiority of BCP over CCP in terms of hard outcomes. Likelihood of serious complications should be considered to improve risk profile of patients before choosing a cardioplegic solution.
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Affiliation(s)
- Daniel A Lerman
- Department of Cardiothoracic Surgery, Royal Infirmary Hospital of Edinburgh (NHS Lothian), University of Edinburgh, Edinburgh, UK - .,MRC Center for Regenerative Medicine, University of Edinburgh, Edinburgh, UK -
| | - Matilde Otero-Losada
- Institute of Cardiological Investigation, University of Buenos Aires, National Research Council, Buenos Aires, Argentina
| | - Kiddy Ume
- Southern Illinois University School of Medicine, Springfield, IL, USA
| | - Pablo A Salgado
- Faculty of Odontology, University of Buenos Aires, Buenos Aires, Argentina.,Center for Population Health Investigations, P. Durand Hospital, Buenos Aires, Argentina.,Ministry of Health of Argentina, Buenos Aires, Argentina
| | - Sai Prasad
- Department of Cardiothoracic Surgery, Royal Infirmary Hospital of Edinburgh (NHS Lothian), University of Edinburgh, Edinburgh, UK
| | - Kelvin Lim
- Department of Cardiothoracic Surgery, Royal Infirmary Hospital of Edinburgh (NHS Lothian), University of Edinburgh, Edinburgh, UK
| | - Bruno Péault
- MRC Center for Regenerative Medicine, University of Edinburgh, Edinburgh, UK.,University of California, Los Angeles, CA, USA
| | - Nasri Alotti
- Department of Cardiothoracic Surgery, Zala County St. Rafael Hospital, Pécs University, Pécs, Hungary
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Durandy YD. Is there a rationale for short cardioplegia re-dosing intervals? World J Cardiol 2015; 7:658-664. [PMID: 26516420 PMCID: PMC4620077 DOI: 10.4330/wjc.v7.i10.658] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Revised: 08/16/2015] [Accepted: 09/16/2015] [Indexed: 02/06/2023] Open
Abstract
While cardioplegia has been used on millions of patients during the last decades, the debate over the best technique is still going on. Cardioplegia is not only meant to provide a non-contracting heart and a field without blood, thus avoiding the risk of gas emboli, but also used for myocardial protection. Its electromechanical effect is easily confirmed through direct vision of the heart and continuous electrocardiogram monitoring, but there is no consensus on the best way to assess the quality of myocardial protection. The optimal approach is thus far from clear and the considerable amount of literature on the subject fails to provide a definite answer. Cardioplegia composition (crystalloid vs blood, with or without various substrate enhancement), temperature and site(s) of injection have been extensively researched. While less frequently studied, re-dosing interval is also an important factor. A common and intuitive idea is that shorter re-dosing intervals lead to improved myocardial protection. A vast majority of surgeons use re-dosing intervals of 20-30 min, or even less, during coronary artery bypass graft and multidose cardioplegia has been the “gold standard” for decades. However, one-shot cardioplegia is becoming more commonly used and is likely to be a valuable alternative. Some surgeons prefer the comfort of single-shot cardioplegia while others feel more confident with shorter re-dosing intervals. There is no guarantee that a single strategy can be safely applied to all patients, irrespective of their age, comorbidities or cardiopathy. The goal of this review is to discuss the rationale for short re-dosing intervals.
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Lee JH, Jeong DS, Sung K, Kim WS, Lee YT, Park PW. Clinical Results of Different Myocardial Protection Techniques in Aortic Stenosis. THE KOREAN JOURNAL OF THORACIC AND CARDIOVASCULAR SURGERY 2015; 48:164-73. [PMID: 26078922 PMCID: PMC4463236 DOI: 10.5090/kjtcs.2015.48.3.164] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Revised: 12/02/2014] [Accepted: 12/03/2014] [Indexed: 11/16/2022]
Abstract
Background Hypertrophied myocardium is especially vulnerable to ischemic injury. This study aimed to compare the early and late clinical outcomes of three different methods of myocardial protection in patients with aortic stenosis. Methods This retrospective study included 225 consecutive patients (mean age, 65±10 years; 123 males) with severe aortic stenosis who underwent aortic valve replacement. Patients were excluded if they had coronary artery disease, an ejection fraction <50%, more than mild aortic regurgitation, or endocarditis. The patients were divided into three groups: group A, which was treated with antegrade and retrograde cold blood cardioplegia; group B, which was treated with antegrade crystalloid cardioplegia using histidine-tryptophan-ketoglutarate (HTK) solution; and group C, treated with retrograde cold blood cardioplegia. Results Group A contained 70 patients (31.1%), group B contained 74 patients (32.9%), and group C contained 81 patients (36%). The three groups showed significant differences with regard to the proportion of patients with a New York Heart Association functional classification ≥III (p=0.035), N-terminal pro-brain natriuretic peptide levels (p=0.042), ejection fraction (p=0.035), left ventricular dimensions (p<0.001), left ventricular mass index (p<0.001), and right ventricular systolic pressure (p<0.001). Differences in cardiopulmonary bypass time (p=0.532) and aortic cross-clamp time (p=0.48) among the three groups were not statistically significant. During postoperative recovery, no significant differences were found regarding the use of inotropes (p=0.328), mechanical support (n=0), arrhythmias (atrial fibrillation, p=0.347; non-sustained ventricular tachycardia, p=0.1), and ventilator support time (p=0.162). No operative mortality occurred. Similarly, no significant differences were found in long-term outcomes. Conclusion Although the three groups showed some significant differences with regard to patient characteristics, both antegrade crystalloid cardioplegia with HTK solution and retrograde cold blood cardioplegia led to early and late clinical results similar to those achieved with combined antegrade and retrograde cold blood cardioplegia.
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Affiliation(s)
- Jung Hee Lee
- Department of Thoracic and Cardiovascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine
| | - Dong Seop Jeong
- Department of Thoracic and Cardiovascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine
| | - Kiick Sung
- Department of Thoracic and Cardiovascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine
| | - Wook Sung Kim
- Department of Thoracic and Cardiovascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine
| | - Young Tak Lee
- Department of Thoracic and Cardiovascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine
| | - Pyo Won Park
- Department of Thoracic and Cardiovascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine
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