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Goudot G, Jimenez A, Mohamedi N, Sitruk J, Wang LZ, Khider L, Bruneval P, Messas E, Pernot M, Mirault T. Vasa vasorum interna in the carotid wall of active forms of Takayasu arteritis evidenced by ultrasound localization microscopy. Vasc Med 2024; 29:296-301. [PMID: 38488572 DOI: 10.1177/1358863x241228262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
Introduction: Takayasu arteritis (TA) is associated with microvascularization of the wall of large arteries and is related to inflammation. Ultrasound localization microscopy (ULM), combining ultrafast ultrasound imaging with microbubble (MB) injection, can track the path of MBs within the arterial wall and thus provide imaging of the vasa vasorum. From the analysis of MB tracks in the common carotid arteries of patients with active TA, we report the presence of microvessels in connection with the carotid lumen (i.e., vasa vasorum interna [VVI]). Methods: ULM maps were obtained on five patients with active disease in the observational single-center series of the TAK-UF study. MB tracks connected to the carotid lumen were automatically identified, allowing the reconstruction of VVI. Results: MB tracking allows us to observe a microvascular network on the inner part of the wall, with some vessels in communication with the carotid lumen. This type of vessel was identified in all patients with active TA (n = 5) with a median of 2.2 [1.1-3.0] vessels per acquisition (2D longitudinal view of 3 cm of the common carotid artery). The blood flow within these vessels is mainly centrifugal; that is, toward the adventitia (88% [54-100] of MB tracks with flow directed to the outer part of the wall). Conclusion: VVI are present in humans in the case of active TA and emphasize the involvement of the intima in the pathological process. ClinicalTrials.gov Identifier: NCT03956394.
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Affiliation(s)
- Guillaume Goudot
- Université Paris Cité, INSERM U970 PARCC, Paris, France
- Vascular Medicine Department, Georges Pompidou European Hospital, APHP, Paris, France
| | - Anatole Jimenez
- Physics for Medicine Paris, INSERM U1273, ESPCI Paris, CNRS FRE 2031, PSL Research University, Paris, France
| | - Nassim Mohamedi
- Université Paris Cité, INSERM U970 PARCC, Paris, France
- Vascular Medicine Department, Georges Pompidou European Hospital, APHP, Paris, France
| | - Jonas Sitruk
- Université Paris Cité, INSERM U970 PARCC, Paris, France
- Vascular Medicine Department, Georges Pompidou European Hospital, APHP, Paris, France
| | - Louise Z Wang
- Université Paris Cité, INSERM U970 PARCC, Paris, France
- Vascular Medicine Department, Georges Pompidou European Hospital, APHP, Paris, France
| | - Lina Khider
- Université Paris Cité, INSERM U970 PARCC, Paris, France
- Vascular Medicine Department, Georges Pompidou European Hospital, APHP, Paris, France
| | - Patrick Bruneval
- Cardiology Department, Georges Pompidou European Hospital, APHP, Université Paris Cité, Paris, France
| | - Emmanuel Messas
- Université Paris Cité, INSERM U970 PARCC, Paris, France
- Vascular Medicine Department, Georges Pompidou European Hospital, APHP, Paris, France
| | - Mathieu Pernot
- Physics for Medicine Paris, INSERM U1273, ESPCI Paris, CNRS FRE 2031, PSL Research University, Paris, France
| | - Tristan Mirault
- Université Paris Cité, INSERM U970 PARCC, Paris, France
- Vascular Medicine Department, Georges Pompidou European Hospital, APHP, Paris, France
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Storlund RL, Rosen DAS, Haulena M, Sanatani S, Vander Zaag J, Trites AW. Ultrasound images of the ascending aorta of anesthetized northern fur seals and Steller sea lions confirm that the aortic bulb maintains continuous blood flow. JOURNAL OF EXPERIMENTAL ZOOLOGY. PART A, ECOLOGICAL AND INTEGRATIVE PHYSIOLOGY 2024; 341:458-469. [PMID: 38409932 DOI: 10.1002/jez.2799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 02/02/2024] [Accepted: 02/09/2024] [Indexed: 02/28/2024]
Abstract
The increased size and enhanced compliance of the aortic bulb-the enlargement of the ascending aorta-are believed to maintain blood flow in pinnipeds during extended periods of diastole induced by diving bradycardia. The aortic bulb has been described ex vivo in several species of pinnipeds, but in vivo measurements are needed to investigate the relationship between structure and function. We obtained ultrasound images using electrocardiogram-gated transesophageal echocardiography during anesthesia and after atropine administration to assess the relationship between aortic bulb anatomy and cardiac function (heart rate, stroke volume, cardiac output) in northern fur seals (Callorhinus ursinus) and Steller sea lions (Eumetopias jubatus). We observed that the aortic bulb in northern fur seals and Steller sea lions expands during systole and recoils over the entire diastolic period indicating that blood flow is maintained throughout the entire cardiac cycle as expected. The stroke volumes we measured in the fur seals and sea lions fit the values predicted based on body size in mammals and did not change with increased heart rates, suggesting that greater stroke volumes are not needed for aortic bulb function. Overall, our results suggest that peripheral vasoconstriction during diving is sufficient to modulate the volume of blood in the aortic bulb to ensure that flow lasts over the entire diastolic period. These results indicate that the shift of blood into the aortic bulb of pinnipeds is a fundamental mechanism caused by vasoconstriction while diving, highlighting the importance of this unique anatomical adaptation.
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Affiliation(s)
- Rhea L Storlund
- Marine Mammal Research Unit, Institute for the Oceans and Fisheries, University of British Columbia, Vancouver, British Columbia, Canada
- Department of Zoology, University of British Columbia, Vancouver, British Columbia, Canada
| | - David A S Rosen
- Marine Mammal Research Unit, Institute for the Oceans and Fisheries, University of British Columbia, Vancouver, British Columbia, Canada
- Vancouver Aquarium, Vancouver, British Columbia, Canada
| | | | - Shubhayan Sanatani
- Division of Cardiology, British Columbia Children's Hospital, Vancouver, British Columbia, Canada
- Department of Pediatrics, University of British Columbia, Vancouver, British Columbia, Canada
| | - Jessica Vander Zaag
- Division of Cardiology, British Columbia Children's Hospital, Vancouver, British Columbia, Canada
| | - Andrew W Trites
- Marine Mammal Research Unit, Institute for the Oceans and Fisheries, University of British Columbia, Vancouver, British Columbia, Canada
- Department of Zoology, University of British Columbia, Vancouver, British Columbia, Canada
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Mompeó B, Pérez L, Fernández A, Saavedra P, Rivero M, Arbelo M, Arregui M, Suárez-Santana C, Bernaldo-de-Quiros Y. Morphological structure of the aortic wall in three Delphinid species with shallow or intermediate diving habits: Evidence for diving adaptation. J Morphol 2020; 281:377-387. [PMID: 32039518 DOI: 10.1002/jmor.21105] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 01/01/2020] [Accepted: 01/15/2020] [Indexed: 11/09/2022]
Abstract
Some modifications in the vascular system of marine mammals provide adaptive advantages for diving. This study analyses the organisation of the aortic wall in dolphins, observing artery changes in volume and blood pressure for diving behaviour. Samples of three aortic segments (ascending, thoracic and abdominal) of three dolphin species were processed for histological and morphometric studies. The three dolphin species used, striped dolphin (Stenella coeruleoalba), Atlantic spotted dolphin (Stenella frontalis) and common dolphin (Delphinus delphis), have shallow or intermediate diving habits. Our results indicated that the components of the aortic wall of the dolphins had different dispositions in the three selected segments. The aortic wall decreased in thickness along its length due to a loss of the lamellar units in the tunica media and a thinning of the main elements of the lamellar units along the artery. The life stage had little influence on the thickness of the aortic wall except for the ascending aorta. The weight, body length, species or sex of the specimen did not significantly influence the thickness of the wall or the lamellar units. In summary, the histological and morphometric aortic structure in dolphins, in relation to the studied parameters, seems to be similar to that previously described of terrestrial mammals such as pigs, except for a larger difference in the proportion of lamellar units between the ascending and thoracic segments.
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Affiliation(s)
- Blanca Mompeó
- Department of Morphology, University of Las Palmas de Gran Canaria (ULPGC), Las Palmas, Spain
| | - Lilian Pérez
- Department of Morphology, University of Las Palmas de Gran Canaria (ULPGC), Las Palmas, Spain
| | - Antonio Fernández
- Division of Histology and Animal Pathology, University Institute of Animal Health and Food Security (IUSA), (ULPGC), Las Palmas, Spain
| | - Pedro Saavedra
- Department of Maths, University of Las Palmas de Gran Canaria (ULPGC), Las Palmas, Spain
| | - Miguel Rivero
- Division of Histology and Animal Pathology, University Institute of Animal Health and Food Security (IUSA), (ULPGC), Las Palmas, Spain
| | - Manuel Arbelo
- Division of Histology and Animal Pathology, University Institute of Animal Health and Food Security (IUSA), (ULPGC), Las Palmas, Spain
| | - Marina Arregui
- Division of Histology and Animal Pathology, University Institute of Animal Health and Food Security (IUSA), (ULPGC), Las Palmas, Spain
| | - Cristian Suárez-Santana
- Division of Histology and Animal Pathology, University Institute of Animal Health and Food Security (IUSA), (ULPGC), Las Palmas, Spain
| | - Yara Bernaldo-de-Quiros
- Division of Histology and Animal Pathology, University Institute of Animal Health and Food Security (IUSA), (ULPGC), Las Palmas, Spain
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Akkuş O, Kaypaklı O, Koca H, Topuz M, Kaplan M, Baykan AO, Samsa MZ, Quisi A, Erel Ö, Neşelioglu S, Gür M. Thiol/disulphide homeostasis in thoracic aortic aneurysm and acute aortic syndrome. Biomark Med 2018; 12:349-358. [PMID: 29436236 DOI: 10.2217/bmm-2017-0372] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
AIM The aim of this study was to evaluate whether ranging values of thiol and disulphide herald a dilatation or impending acute aortic syndrome at thoracic aorta. Results/methodology: Study population consisted of patients with aortic aneurysm (n = 58), with acute aortic syndrome (n = 32) and without aortic aneurysm (control group; n = 61). A spectrophotometric method was used to determine thiol and disulphide. Native and total thiol levels were moderately correlated with maximal aortic diameter. At the end of 6 months, there was statistically significant increase in native, total thiol levels and decrease in disulfide and disulphide/native thiol ratio in operated group. DISCUSSION/CONCLUSION Lower thiol levels may be associated with the higher risk of aortic aneurysm development and may increase after surgical therapy.
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Affiliation(s)
- Oğuz Akkuş
- Department of Cardiology, Adana Numune Training & Research Hospital, Adana, Turkey
| | - Onur Kaypaklı
- Department of Cardiology, Adana Numune Training & Research Hospital, Adana, Turkey
| | - Hasan Koca
- Department of Cardiology, Adana Numune Training & Research Hospital, Adana, Turkey
| | - Mustafa Topuz
- Department of Cardiology, Adana Numune Training & Research Hospital, Adana, Turkey
| | - Mehmet Kaplan
- Department of Cardiology, Adana Numune Training & Research Hospital, Adana, Turkey
| | - Ahmet Oytun Baykan
- Department of Cardiology, Adana Numune Training & Research Hospital, Adana, Turkey
| | - Muhittin Zafer Samsa
- Department of Cardiology, Adana Numune Training & Research Hospital, Adana, Turkey
| | - Alaa Quisi
- Department of Cardiology, Adana Numune Training & Research Hospital, Adana, Turkey
| | - Özcan Erel
- Department of Biochemistry, Yildirim Beyazit University, Ankara, Turkey
| | - Salim Neşelioglu
- Department of Biochemistry, Yildirim Beyazit University, Ankara, Turkey
| | - Mustafa Gür
- Department of Cardiology, Adana Numune Training & Research Hospital, Adana, Turkey
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