Aortic Arch Baroreceptor Stimulation in an Experimental Goat Model: A Novel Method to Lower Blood Pressure
The effect of aortic baroreceptor stimulation on blood pressure manipulation was assessed using the goat species Capra aegagrus hircus. The aim of this study was to manipulate blood pressure with future intention to treat high blood pressure in humans. The ages of the animals ranged from 6 months to...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2019-01-01
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| Series: | Frontiers in Cardiovascular Medicine |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fcvm.2018.00193/full |
| _version_ | 1818584664245272576 |
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| author | Jacobus F. Benson Johan P. Schoeman Frans J. Venter Frans J. Venter James A. Ker Gareth E. Zeiler Lynette Bester Janet van Niekerk Gregory R. Tintinger |
| author_facet | Jacobus F. Benson Johan P. Schoeman Frans J. Venter Frans J. Venter James A. Ker Gareth E. Zeiler Lynette Bester Janet van Niekerk Gregory R. Tintinger |
| author_sort | Jacobus F. Benson |
| collection | DOAJ |
| description | The effect of aortic baroreceptor stimulation on blood pressure manipulation was assessed using the goat species Capra aegagrus hircus. The aim of this study was to manipulate blood pressure with future intention to treat high blood pressure in humans. The ages of the animals ranged from 6 months to 2 years. A standard anesthesia protocol was used. A lateral thoracotomy was performed to gain access to the aortic arch. Data was collected with the Vigileo system. Pre stimulation blood pressure was compared with maximum post stimulation blood pressure values. Results were analyzed with the Wilcoxon signed rank test. In the study 38 animals were enrolled. Baroreceptor stimulation was performed for each animal using 3 different electrodes each of which emits an electrical impulse. In the pilot phase of the study, the median baseline blood pressure prior to stimulation of the baroreceptors was 110.8 mmHg. After stimulation the median blood pressure decreased to 88 mmHg. The average decrease in blood pressure was 22.8 mmHg. This decrease of blood pressure after stimulation of the baroreceptors is statistically significant (p < 0.0001) and the proof of concept was shown. During the extended phase all three probes had a significant effect on blood pressure lowering (p < 0.0001). The study confirmed that aortic baroreceptor stimulation has an effect on blood pressure lowering. This is a novel field of blood pressure manipulation. The hemodynamic effects of long-term aortic baroreceptor stimulation are unknown. Further investigations need to be done to determine whether a similar effect can be induced in different species such as primates and humans. |
| first_indexed | 2024-12-16T08:24:46Z |
| format | Article |
| id | doaj.art-60cde90b48d34f71b71fdd3cbab190e8 |
| institution | Directory Open Access Journal |
| issn | 2297-055X |
| language | English |
| last_indexed | 2024-12-16T08:24:46Z |
| publishDate | 2019-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Cardiovascular Medicine |
| spelling | doaj.art-60cde90b48d34f71b71fdd3cbab190e82022-12-21T22:38:01ZengFrontiers Media S.A.Frontiers in Cardiovascular Medicine2297-055X2019-01-01510.3389/fcvm.2018.00193408537Aortic Arch Baroreceptor Stimulation in an Experimental Goat Model: A Novel Method to Lower Blood PressureJacobus F. Benson0Johan P. Schoeman1Frans J. Venter2Frans J. Venter3James A. Ker4Gareth E. Zeiler5Lynette Bester6Janet van Niekerk7Gregory R. Tintinger8Faculty of Health Sciences, University of Pretoria, Pretoria, South AfricaFaculty of Veterinary Science, University of Pretoria, Pretoria, South AfricaFaculty of Veterinary Science, University of Pretoria, Pretoria, South AfricaCollege of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, QLD, AustraliaFaculty of Health Sciences, University of Pretoria, Pretoria, South AfricaFaculty of Veterinary Science, University of Pretoria, Pretoria, South AfricaFaculty of Veterinary Science, University of Pretoria, Pretoria, South AfricaDepartment of Statistics, University of Pretoria, Pretoria, South AfricaFaculty of Health Sciences, University of Pretoria, Pretoria, South AfricaThe effect of aortic baroreceptor stimulation on blood pressure manipulation was assessed using the goat species Capra aegagrus hircus. The aim of this study was to manipulate blood pressure with future intention to treat high blood pressure in humans. The ages of the animals ranged from 6 months to 2 years. A standard anesthesia protocol was used. A lateral thoracotomy was performed to gain access to the aortic arch. Data was collected with the Vigileo system. Pre stimulation blood pressure was compared with maximum post stimulation blood pressure values. Results were analyzed with the Wilcoxon signed rank test. In the study 38 animals were enrolled. Baroreceptor stimulation was performed for each animal using 3 different electrodes each of which emits an electrical impulse. In the pilot phase of the study, the median baseline blood pressure prior to stimulation of the baroreceptors was 110.8 mmHg. After stimulation the median blood pressure decreased to 88 mmHg. The average decrease in blood pressure was 22.8 mmHg. This decrease of blood pressure after stimulation of the baroreceptors is statistically significant (p < 0.0001) and the proof of concept was shown. During the extended phase all three probes had a significant effect on blood pressure lowering (p < 0.0001). The study confirmed that aortic baroreceptor stimulation has an effect on blood pressure lowering. This is a novel field of blood pressure manipulation. The hemodynamic effects of long-term aortic baroreceptor stimulation are unknown. Further investigations need to be done to determine whether a similar effect can be induced in different species such as primates and humans.https://www.frontiersin.org/article/10.3389/fcvm.2018.00193/fullaortic baroreceptor stimulationautonomic nervous systemcarotid baroreceptorshypertensionsystolic blood pressure |
| spellingShingle | Jacobus F. Benson Johan P. Schoeman Frans J. Venter Frans J. Venter James A. Ker Gareth E. Zeiler Lynette Bester Janet van Niekerk Gregory R. Tintinger Aortic Arch Baroreceptor Stimulation in an Experimental Goat Model: A Novel Method to Lower Blood Pressure Frontiers in Cardiovascular Medicine aortic baroreceptor stimulation autonomic nervous system carotid baroreceptors hypertension systolic blood pressure |
| title | Aortic Arch Baroreceptor Stimulation in an Experimental Goat Model: A Novel Method to Lower Blood Pressure |
| title_full | Aortic Arch Baroreceptor Stimulation in an Experimental Goat Model: A Novel Method to Lower Blood Pressure |
| title_fullStr | Aortic Arch Baroreceptor Stimulation in an Experimental Goat Model: A Novel Method to Lower Blood Pressure |
| title_full_unstemmed | Aortic Arch Baroreceptor Stimulation in an Experimental Goat Model: A Novel Method to Lower Blood Pressure |
| title_short | Aortic Arch Baroreceptor Stimulation in an Experimental Goat Model: A Novel Method to Lower Blood Pressure |
| title_sort | aortic arch baroreceptor stimulation in an experimental goat model a novel method to lower blood pressure |
| topic | aortic baroreceptor stimulation autonomic nervous system carotid baroreceptors hypertension systolic blood pressure |
| url | https://www.frontiersin.org/article/10.3389/fcvm.2018.00193/full |
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