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Cuenca-Bermejo L, Fernández-Del Palacio MJ, de Cassia Gonçalves V, Bautista-Hernández V, Sánchez-Rodrigo C, Fernández-Villalba E, Kublickiene K, Raparelli V, Kautzky-Willer A, Norris CM, Pilote L, Herrero MT. Age and Sex Determine Electrocardiogram Parameters in the Octodon degus. BIOLOGY 2023; 12:747. [PMID: 37237559 PMCID: PMC10215068 DOI: 10.3390/biology12050747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 05/02/2023] [Accepted: 05/12/2023] [Indexed: 05/28/2023]
Abstract
Cardiovascular diseases represent the leading cause of mortality and morbidity worldwide, and age is an important risk factor. Preclinical models provide supportive evidence toward age-related cardiac changes, as well as allow for the study of pathological aspects of the disease. In the present work, we evaluated the electrocardiogram (ECG) recording in the O. degus during the aging process in both females and males. Taking into account the age and sex, our study provides the normal ranges for the heart rate, duration and voltage of the ECG waves and intervals, as well as electrical axis deviation. We found that the QRS complex duration and QTc significantly increased with age, whereas the heart rate significantly decreased. On the other hand, the P wave, PR and QTc segments durations, S wave voltage and electrical axis were found to be significantly different between males and females. The heart rhythm was also altered in aged animals, resulting in an increased incidence of arrhythmias, especially in males. Based on these results, we suggest that this rodent model could be useful for cardiovascular research, including impacts of aging and biological sex.
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Affiliation(s)
- Lorena Cuenca-Bermejo
- Clinical & Experimental Neuroscience (NiCE), Biomedical Research Institute of Murcia (IMIB-Pascual Parrilla), University of Murcia, 30120 Murcia, Spain; (L.C.-B.); (V.d.C.G.); (C.S.-R.); (E.F.-V.)
- Institute for Aging Research (IUIE), Campus Mare Nostrum, European University for Wellbeing (EUniWell), 30100 Murcia, Spain
| | | | - Valeria de Cassia Gonçalves
- Clinical & Experimental Neuroscience (NiCE), Biomedical Research Institute of Murcia (IMIB-Pascual Parrilla), University of Murcia, 30120 Murcia, Spain; (L.C.-B.); (V.d.C.G.); (C.S.-R.); (E.F.-V.)
- Disciplina de Neurociência, Departamento de Neurologia e Neurocirurgia, Universidade Federal de São Paulo (UNIFESP), São Paulo 04039-032, Brazil
| | | | - Consuelo Sánchez-Rodrigo
- Clinical & Experimental Neuroscience (NiCE), Biomedical Research Institute of Murcia (IMIB-Pascual Parrilla), University of Murcia, 30120 Murcia, Spain; (L.C.-B.); (V.d.C.G.); (C.S.-R.); (E.F.-V.)
- Institute for Aging Research (IUIE), Campus Mare Nostrum, European University for Wellbeing (EUniWell), 30100 Murcia, Spain
| | - Emiliano Fernández-Villalba
- Clinical & Experimental Neuroscience (NiCE), Biomedical Research Institute of Murcia (IMIB-Pascual Parrilla), University of Murcia, 30120 Murcia, Spain; (L.C.-B.); (V.d.C.G.); (C.S.-R.); (E.F.-V.)
- Institute for Aging Research (IUIE), Campus Mare Nostrum, European University for Wellbeing (EUniWell), 30100 Murcia, Spain
| | - Karolina Kublickiene
- Division of Renal Medicine, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, 17177 Stockholm, Sweden;
| | - Valeria Raparelli
- Department of Translational Medicine, University of Ferrara, 44124 Ferrara, Italy;
- University Center for Studies on Gender Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Alexandra Kautzky-Willer
- Division of Endocrinology and Metabolism, Department of Medicine III, Medical University of Vienna, 1090 Vienna, Austria;
| | - Colleen M. Norris
- Faculty of Nursing, University of Alberta, Edmonton, AB T6G 2R3, Canada;
- Cardiovascular and Stroke Strategic Clinical Network, Alberta Health Services, Edmonton, AB T5J 3E4, Canada
| | - Louise Pilote
- Division of Clinical Epidemiology, Research Institute of McGill University Health Centre, McGill University, Montreal, QC H4A 3J1, Canada;
| | - María Trinidad Herrero
- Clinical & Experimental Neuroscience (NiCE), Biomedical Research Institute of Murcia (IMIB-Pascual Parrilla), University of Murcia, 30120 Murcia, Spain; (L.C.-B.); (V.d.C.G.); (C.S.-R.); (E.F.-V.)
- Institute for Aging Research (IUIE), Campus Mare Nostrum, European University for Wellbeing (EUniWell), 30100 Murcia, Spain
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Farag A, Mandour AS, Hamabe L, Yoshida T, Shimada K, Tanaka R. Novel protocol to establish the myocardial infarction model in rats using a combination of medetomidine-midazolam-butorphanol (MMB) and atipamezole. Front Vet Sci 2022; 9:1064836. [PMID: 36544554 PMCID: PMC9760920 DOI: 10.3389/fvets.2022.1064836] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Accepted: 11/14/2022] [Indexed: 12/12/2022] Open
Abstract
Background Myocardial infarction (MI) is one of the most common cardiac problems causing deaths in humans. Previously validated anesthetic agents used in MI model establishment are currently controversial with severe restrictions because of ethical concerns. The combination between medetomidine, midazolam, and butorphanol (MMB) is commonly used in different animal models. The possibility of MMB combination to establish the MI model in rats did not study yet which is difficult because of severe respiratory depression and delayed recovery post-surgery, resulting in significant deaths. Atipamezole is used to counter the cardiopulmonary suppressive effect of MMB. Objectives The aim of the present study is to establish MI model in rats using a novel anesthetic combination between MMB and Atipamezole. Materials and methods Twenty-five Sprague Dawley (SD) rats were included. Rats were prepared for induction of the Myocardial infarction (MI) model through thoracotomy. Anesthesia was initially induced with a mixture of MMB (0.3/5.0/5.0 mg/kg/SC), respectively. After endotracheal intubation, rats were maintained with isoflurane 1% which gradually reduced after chest closing. MI was induced through the left anterior descending (LAD) artery ligation technique. Atipamezole was administered after finishing all surgical procedures at a dose rate of 1.0 mg/kg/SC. Cardiac function parameters were evaluated using ECG (before and after atipamezole administration) and transthoracic echocardiography (before and 1 month after MI induction) to confirm the successful model. The induction time, operation time, and recovery time were calculated. The success rate of the MI model was also calculated. Results MI was successfully established with the mentioned anesthetic protocol through the LAD ligation technique and confirmed through changes in ECG and echocardiographic parameters after MI. ECG data was improved after atipamezole administration through a significant increase in heart rate (HR), PR Interval, QRS Interval, and QT correction (QTc) and a significant reduction in RR Interval. Atipamezole enables rats to recover voluntary respiratory movement (VRM), wakefulness, movement, and posture within a very short time after administration. Echocardiographic ally, MI rats showed a significant decrease in the left ventricular wall thickness, EF, FS, and increased left ventricular diastolic and systolic internal diameter. In addition, induction time (3.440 ± 1.044), operation time (29.40 ± 3.663), partial recovery time (10.84 ± 3.313), and complete recovery time (12.36 ± 4.847) were relatively short. Moreover, the success rate of the anesthetic protocol was 100%, and all rats were maintained for 1 month after surgery with a survival rate of 88%. Conclusion Our protocol produced a more easy anesthetic effect and time-saving procedures with a highly successful rate in MI rats. Subcutaneous injection of Atipamezole efficiently counters the cardiopulmonary side effect of MMB which is necessary for rapid recovery and subsequently enhancing the survival rate during the creation of the MI model in rats.
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Affiliation(s)
- Ahmed Farag
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Fuchu, Japan,Department of Surgery, Anesthesiology, and Radiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt,*Correspondence: Ahmed Farag
| | - Ahmed S. Mandour
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Fuchu, Japan,Department of Animal Medicine (Internal Medicine), Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt,Ahmed S. Mandour
| | - Lina Hamabe
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Fuchu, Japan
| | - Tomohiko Yoshida
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Fuchu, Japan
| | - Kazumi Shimada
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Fuchu, Japan
| | - Ryou Tanaka
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Fuchu, Japan,Ryou Tanaka
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Xylazine-/diazepam-ketamine and isoflurane differentially affect hemodynamics and organ injury under hemorrhagic/traumatic shock and resuscitation in rats. Shock 2011; 35:573-8. [PMID: 21330949 DOI: 10.1097/shk.0b013e318212266b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Most experimental studies on hemorrhage and trauma are performed under anesthesia. We determined the effects of three commonly used anesthetic regimens on hemodynamics and organ damage under normal and hemorrhagic/traumatic shock (HTS) conditions in rats. Animals were anesthetized with ketamine/diazepam (K/D), ketamine/xylazine (K/X), or isoflurane (ISO). Hemorrhagic/traumatic shock was induced by a midline laparotomy, bleeding to a mean arterial pressure of 30 to 35 mmHg until decompensation, followed by restrictive and adequate phases of resuscitation. The experiment was terminated 120 min after the completion of resuscitation. Under normal conditions, K/D anesthesia resulted in higher mean arterial pressure and heart rate than K/X and higher systemic vascular resistance index (SVRI) than ISO. Stroke volume was significantly lower in K/D group than in K/X and ISO groups. Under normal conditions, ISO anesthesia was accompanied by the highest cardiac index. During shock and resuscitation, heart rate remained higher in the K/D than K/X. During shock, SVRI decreased in the K/D group but increased in K/X and ISO groups. After resuscitation, SVRI was lower, and cardiac index was higher in the ISO group than in the K/D group. Despite higher shed blood volume, the rats anesthetized with ISO did not decompensate within the time frame compared with other groups. Cellular damage (plasma creatine kinase, lactate dehydrogenase, uric acid) was more pronounced with K/D compared with ISO. Histological examinations revealed frequent HTS-induced damage to adrenals, kidney, and liver of animals anesthetized with K/D and K/X but not with ISO. Anesthetics differentially affect HTS-induced hemodynamic alterations and organ injury. Thus, when interpreting data from HTS models, the individual effect of anesthetics should be considered.
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