1.Infected Abdominal Aortic Aneurysm Rupture due to Listeria monocytogenes
Kazuhisa Sakamoto ; Yoshitaka Hayashi ; Tomofumi Taki ; Junichiro Nishizawa ; Shogo Nakayama
Japanese Journal of Cardiovascular Surgery 2008;37(4):226-229
A76-year-old man was transferred to our hospital for evaluation of continuous abdominal pain with systemic inflammation. Clinical examinations suggested the pressure of an adynamic ileus due to diverculitis and an infrarenal abdominal aortic aneurysm. Thirty-eight millimeter in diameter despite the commencement of antibiotic therapy, the symptoms progressively worsened and repeated CT scan demonstrated a rupture of the aneurysm without any enlargement in diameter. An emergency operation was done, and the patient was discharged on the 77th postoperative day. Blood culture and histological findings disclosed an infected aortic aneurysm due to Listeria monocytogenes. The possibility of aortic infection should be considered in patients showing a sudden rupture of an aortic aneurysm.
2.Retroperitoneal Approach in the Emergency Treatment of Ruptured Abdominal Aortic Aneurysms.
Tetsuro Morota ; Motomi Ando ; Yutaka Okita ; Hidenori Yoshitaka ; Yoshio Nakayama ; Shinichi Takamoto
Japanese Journal of Cardiovascular Surgery 1996;25(1):64-66
Two cases of ruptured abdominal aortic aneurysm (AAA) treated with retroperitoneal approach are presented. Case 1 was a 73-year-old man with an infrarenal AAA of 44mm in diameter, and case 2 was a 73-year-old man with a 54mm pseudoaneurysm after graft replacement for AAA. Both patients had a history of previous laparotomy and their aneurysms had ruptured into only the right retroperitoneal space. A left retroperitoneal approach permitted wide and rapid exposure of the aorta with minimal damage to the intestines and respiratory function. Their postoperative courses were uneventful.
3.Steerable Microcatheter Facilitates Navigation through Tortuous Internal Carotid Artery Lesions in Carotid Artery Stenting
Shuto FUSHIMI ; Nagatsuki TOMURA ; Takashi SHUTO ; Fukutaro OHGAKI ; Yoshitaka NAKAYAMA
Neurointervention 2025;20(1):42-46
The treatment of carotid stenosis complicated by severe vessel tortuosity can present challenges in distal vessel selection and device delivery. This article reports the use of a steerable microcatheter (SM) for carotid artery stenting (CAS) in such cases. A 67-year-old male with transient lower extremity weakness and bilateral cerebral infarctions was found to have bilateral carotid stenosis. CAS was planned for both carotid arteries due to coronary artery disease. The left carotid artery exhibited severe stenosis with a 90-degree angle between the common and internal carotid artery (ICA). Anticipating difficulty in navigating the device, we used a 2.4 Fr SM. By adjusting the catheter tip to align with the ICA, we successfully guided the wire distally. Following the catheter exchange, a distal protection device was deployed, and CAS was completed successfully. SMs provide exceptional vascular selectivity and support, improving success in complex cases.
4.Steerable Microcatheter Facilitates Navigation through Tortuous Internal Carotid Artery Lesions in Carotid Artery Stenting
Shuto FUSHIMI ; Nagatsuki TOMURA ; Takashi SHUTO ; Fukutaro OHGAKI ; Yoshitaka NAKAYAMA
Neurointervention 2025;20(1):42-46
The treatment of carotid stenosis complicated by severe vessel tortuosity can present challenges in distal vessel selection and device delivery. This article reports the use of a steerable microcatheter (SM) for carotid artery stenting (CAS) in such cases. A 67-year-old male with transient lower extremity weakness and bilateral cerebral infarctions was found to have bilateral carotid stenosis. CAS was planned for both carotid arteries due to coronary artery disease. The left carotid artery exhibited severe stenosis with a 90-degree angle between the common and internal carotid artery (ICA). Anticipating difficulty in navigating the device, we used a 2.4 Fr SM. By adjusting the catheter tip to align with the ICA, we successfully guided the wire distally. Following the catheter exchange, a distal protection device was deployed, and CAS was completed successfully. SMs provide exceptional vascular selectivity and support, improving success in complex cases.
5.Steerable Microcatheter Facilitates Navigation through Tortuous Internal Carotid Artery Lesions in Carotid Artery Stenting
Shuto FUSHIMI ; Nagatsuki TOMURA ; Takashi SHUTO ; Fukutaro OHGAKI ; Yoshitaka NAKAYAMA
Neurointervention 2025;20(1):42-46
The treatment of carotid stenosis complicated by severe vessel tortuosity can present challenges in distal vessel selection and device delivery. This article reports the use of a steerable microcatheter (SM) for carotid artery stenting (CAS) in such cases. A 67-year-old male with transient lower extremity weakness and bilateral cerebral infarctions was found to have bilateral carotid stenosis. CAS was planned for both carotid arteries due to coronary artery disease. The left carotid artery exhibited severe stenosis with a 90-degree angle between the common and internal carotid artery (ICA). Anticipating difficulty in navigating the device, we used a 2.4 Fr SM. By adjusting the catheter tip to align with the ICA, we successfully guided the wire distally. Following the catheter exchange, a distal protection device was deployed, and CAS was completed successfully. SMs provide exceptional vascular selectivity and support, improving success in complex cases.
6.Steerable Microcatheter Facilitates Navigation through Tortuous Internal Carotid Artery Lesions in Carotid Artery Stenting
Shuto FUSHIMI ; Nagatsuki TOMURA ; Takashi SHUTO ; Fukutaro OHGAKI ; Yoshitaka NAKAYAMA
Neurointervention 2025;20(1):42-46
The treatment of carotid stenosis complicated by severe vessel tortuosity can present challenges in distal vessel selection and device delivery. This article reports the use of a steerable microcatheter (SM) for carotid artery stenting (CAS) in such cases. A 67-year-old male with transient lower extremity weakness and bilateral cerebral infarctions was found to have bilateral carotid stenosis. CAS was planned for both carotid arteries due to coronary artery disease. The left carotid artery exhibited severe stenosis with a 90-degree angle between the common and internal carotid artery (ICA). Anticipating difficulty in navigating the device, we used a 2.4 Fr SM. By adjusting the catheter tip to align with the ICA, we successfully guided the wire distally. Following the catheter exchange, a distal protection device was deployed, and CAS was completed successfully. SMs provide exceptional vascular selectivity and support, improving success in complex cases.
7.Steerable Microcatheter Facilitates Navigation through Tortuous Internal Carotid Artery Lesions in Carotid Artery Stenting
Shuto FUSHIMI ; Nagatsuki TOMURA ; Takashi SHUTO ; Fukutaro OHGAKI ; Yoshitaka NAKAYAMA
Neurointervention 2025;20(1):42-46
The treatment of carotid stenosis complicated by severe vessel tortuosity can present challenges in distal vessel selection and device delivery. This article reports the use of a steerable microcatheter (SM) for carotid artery stenting (CAS) in such cases. A 67-year-old male with transient lower extremity weakness and bilateral cerebral infarctions was found to have bilateral carotid stenosis. CAS was planned for both carotid arteries due to coronary artery disease. The left carotid artery exhibited severe stenosis with a 90-degree angle between the common and internal carotid artery (ICA). Anticipating difficulty in navigating the device, we used a 2.4 Fr SM. By adjusting the catheter tip to align with the ICA, we successfully guided the wire distally. Following the catheter exchange, a distal protection device was deployed, and CAS was completed successfully. SMs provide exceptional vascular selectivity and support, improving success in complex cases.
8.Platelet-rich plasma inhibits the apoptosis of highly adipogenic homogeneous preadipocytes in an in vitro culture system.
Yoshitaka FUKAYA ; Masayuki KURODA ; Yasuyuki AOYAGI ; Sakiyo ASADA ; Yoshitaka KUBOTA ; Yoshitaka OKAMOTO ; Toshinori NAKAYAMA ; Yasushi SAITO ; Kaneshige SATOH ; Hideaki BUJO
Experimental & Molecular Medicine 2012;44(5):330-339
Auto-transplantation of adipose tissue is commonly used for the treatment of tissue defects in plastic surgery. The survival of the transplanted adipose tissue is not always constant, and one of reasons is the accelerated apoptosis of the implanted preadipocytes. We have recently established highly homogeneous preadipocytes, named ccdPAs. The aim of the current study was to evaluate the regulation of the potency of platelet-rich plasma (PRP) on the apoptosis of ccdPAs in vitro. PRP stimulated the proliferation of the preadipocytes in a dose-dependent manner, and the stimulatory activity of 2% PRP was significantly higher than that of 2% FBS or 2% platelet-poor plasma (PPP). The presence of 2% PRP significantly inhibited serum starvation- or TNF-alpha/cycloheximide-induced apoptosis in comparison to 2% FBS or 2% PPP. DAPK1 and Bcl-2-interacting mediator of cell death (BIM) mRNAs were reduced in the preadipocytes cultured with 2% PRP in comparison to those cultured in 2% FBS. The gene expression levels were significantly higher in cells cultured without serum in comparison to cells cultured with 2% FBS, and the levels in the cells with 2% PRP were reduced to 5-10% of those in the cells without serum. These results indicated that ccdPAs exhibit anti-apoptotic activities, in addition to increased proliferation, when cultured in 2% PRP in comparison to the same concentration of FBS, and that this was accompanied with reduced levels of DAPK1 and BIM mRNA expression in in vitro culture. PRP may improve the outcome of transplantation of adipose tissue by enhancing the anti-apoptotic activities of the implanted preadipocytes.
Adipocytes/*cytology
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Adipose Tissue/cytology/metabolism
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Apoptosis/*physiology
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Apoptosis Regulatory Proteins/antagonists & inhibitors/metabolism
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Calcium-Calmodulin-Dependent Protein Kinases/antagonists & inhibitors/metabolism
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Cell Culture Techniques/*methods
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*Cell Differentiation
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Cell Proliferation
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Cells, Cultured
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Gene Expression Regulation
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Humans
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Membrane Proteins/antagonists & inhibitors/metabolism
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*Platelet-Rich Plasma/metabolism/physiology
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Proto-Oncogene Proteins/antagonists & inhibitors/metabolism
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Tissue Transplantation