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Kitahara S, Kataoka Y, Fujino Y. Natural history of coronary inflammatory activity in spontaneous coronary artery dissection: insights from serial pericoronary adipose tissue analysis. Eur Heart J Case Rep 2024; 8:ytae115. [PMID: 38476288 PMCID: PMC10928482 DOI: 10.1093/ehjcr/ytae115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/05/2024] [Accepted: 02/22/2024] [Indexed: 03/14/2024]
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Niida T, Isoda K, Tada M, Kitahara S, Fujino Y. Successful healing of aneurysmal false lumen using a second-generation drug-eluting stent in spontaneous coronary artery dissection: a case report. Egypt Heart J 2024; 76:13. [PMID: 38300378 PMCID: PMC10834900 DOI: 10.1186/s43044-024-00447-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 01/25/2024] [Indexed: 02/02/2024] Open
Abstract
BACKGROUND According to 2023 ESC Guideline, conservative medical management is generally recommended for the treatment of spontaneous coronary artery dissection (SCAD) except for patients with signs of ongoing myocardial ischemia. However, in some cases, invasive treatment (coronary artery bypass graft surgery or percutaneous coronary intervention (PCI)) is performed because of the progression of aneurysm in SCAD. Although there is no established strategy for the management of coronary aneurysm in SCAD, we report a case of successful healing of aneurysmal false lumen (AFL) using a second-generation drug-eluting stent (DES) in SCAD. CASE PRESENTATION A 44-year-old woman without any cardiovascular risk factors was transferred to our hospital due to inferior myocardial infarction. Coronary angiography (CAG) showed multiple SCADs in the coronary artery. We performed PCI to the distal right coronary artery (RCA) because the RCA showed severe stenosis (99%) with bradycardia. Six days after the first PCI, SCAD relapsed in the mid left anterior descending artery (LAD). Furthermore, AFL was observed by intravascular ultrasound imaging. To avoid enlargement of the AFL and progression of the dissection toward the proximal site of the LAD, we performed PCI to the mid LAD to seal the entry tear of the dissection using a second-generation DES. CAG revealed that the AFL in the mid LAD completely diminished at 1 year after PCI. CONCLUSIONS The implantation of a second-generation DES might be one of therapeutic options for sealing AFL in SCAD patients.
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Ishimaru T, Okawara M, Tateishi S, Yasui T, Horie S, Fujino Y. Impact of menopausal symptoms on presenteeism in Japanese women. Occup Med (Lond) 2023; 73:404-409. [PMID: 37494697 DOI: 10.1093/occmed/kqad087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/28/2023] Open
Abstract
BACKGROUND Menopausal symptoms are common among middle-aged women. Working women with severe menopausal symptoms are more likely to experience presenteeism-a condition where employees continue to work despite feeling unwell. However, it remains unclear as to which specific symptoms women experience during the menopausal transition and postmenopausal periods that primarily contribute to presenteeism. AIMS To evaluate the associations between types of menopausal symptoms and presenteeism among Japanese women. METHODS A cross-sectional study of 4000 women aged 40-59 years who were currently working was conducted in Japan in September 2022. We used an online self-administered questionnaire that included items on demographic characteristics, the Menopause Rating Scale for measuring menopausal symptoms and the Work Functioning Impairment Scale for measuring presenteeism. Logistic regression analysis was performed. RESULTS Women with severe overall menopausal symptoms had 12.18-fold (95% confidence interval [CI] 9.09-16.33, P < 0.001) increased odds of presenteeism compared with those without symptoms. Participants with psychological symptoms also had significantly higher presenteeism (severe: odds ratio: 9.18, 95% CI 6.60-12.78, P < 0.001). However, after controlling for psychological symptoms, there were no significant associations between somatic and urogenital symptoms and presenteeism. CONCLUSIONS The results indicate that menopausal symptoms, especially psychological symptoms, have a significant impact on presenteeism among Japanese women. Organizations need to address menopausal symptoms in the workplace, with an emphasis on reducing work-related stress for women with menopausal symptoms.
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Kitahara S, Kataoka Y, Miura H, Nishii T, Nishimura K, Murai K, Iwai T, Matama H, Honda S, Fujino M, Yoneda S, Takagi K, Otsuka F, Asaumi Y, Fujino Y, Tsujita K, Puri R, Nicholls SJ, Noguchi T. Characterization of plaque phenotypes exhibiting an elevated pericoronary adipose tissue attenuation: insights from the REASSURE-NIRS registry. Int J Cardiovasc Imaging 2023; 39:1943-1952. [PMID: 37380905 PMCID: PMC10589176 DOI: 10.1007/s10554-023-02907-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Accepted: 06/19/2023] [Indexed: 06/30/2023]
Abstract
Inflammation has been considered to promote atheroma instability. Coronary computed tomography angiography (CCTA) visualizes pericoronary adipose tissue (PCAT) attenuation, which reflects coronary artery inflammation. While PCAT attenuation has been reported to predict future coronary events, plaque phenotypes exhibiting high PCAT attenuation remains to be fully elucidated. The current study aims to characterize coronary atheroma with a greater vascular inflammation. We retrospectively analyzed culprit lesions in 69 CAD patients receiving PCI from the REASSURE-NIRS registry (NCT04864171). Culprit lesions were evaluated by both CCTA and near-infrared spectroscopy/intravascular ultrasound (NIRS/IVUS) imaging prior to PCI. PCAT attenuation at proximal RCA (PCATRCA) and NIRS/IVUS-derived plaque measures were compared in patients with PCATRCA attenuation ≥ and < -78.3 HU (median). Lesions with PCATRCA attenuation ≥ -78.3 HU exhibited a greater frequency of maxLCBI4mm ≥ 400 (66% vs. 26%, p < 0.01), plaque burden ≥ 70% (94% vs. 74%, p = 0.02) and spotty calcification (49% vs. 6%, p < 0.01). Whereas positive remodeling (63% vs. 41%, p = 0.07) did not differ between two groups. On multivariable analysis, maxLCBI4mm ≥ 400 (OR = 4.07; 95%CI 1.12-14.74, p = 0.03), plaque burden ≥ 70% (OR = 7.87; 95%CI 1.01-61.26, p = 0.04), and spotty calcification (OR = 14.33; 95%CI 2.37-86.73, p < 0.01) independently predicted high PCATRCA attenuation. Of note, while the presence of only one plaque feature did not necessarily elevate PCATRCA attenuation (p = 0.22), lesions harboring two or more features were significantly associated with higher PCATRCA attenuation. More vulnerable plaque phenotypes were observed in patients with high PCATRCA attenuation. Our findings suggest PCATRCA attenuation as the presence of profound disease substrate, which potentially benefits from anti-inflammatory agents.
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Maeda N, Tanoue S, Fujino Y, Hinokuchi M, Arima S, Sasaki F, Hashimoto S, Kanmura S, Higashi M, Ido A. Focal Type 2 Autoimmune Pancreatitis Mimicking Pancreatic Cancer: Treatment with Neoadjuvant Chemotherapy and Surgery. Intern Med 2023; 62:2499-2505. [PMID: 36543207 PMCID: PMC10518552 DOI: 10.2169/internalmedicine.0224-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 11/06/2022] [Indexed: 12/24/2022] Open
Abstract
A 51-year-old man was referred to our hospital for the further examination of main pancreatic duct interruption. Imaging findings showed a 25-mm-diameter mass lesion located in the pancreatic head. Endoscopic ultrasonography (EUS)-guided fine-needle aspiration (FNA) was performed on the mass. Cytology suggested adenocarcinoma, but the histological diagnosis was not confirmed. We made a comprehensive diagnosis of resectable pancreatic cancer. The mass shrank after preoperative adjuvant chemotherapy, and the patient underwent surgery. The final pathological diagnosis was type 2 autoimmune pancreatitis (AIP). Two years after surgery, AIP had not recurred in the remaining pancreas.
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Fujino Y, Kanmura S, Morinaga Y, Kojima I, Maeda N, Tanaka A, Maeda H, Kumagai K, Sasaki F, Tanoue S, Ido A. Hepatocyte growth factor ameliorates dextran sodium sulfate‑induced colitis in a mouse model by altering the phenotype of intestinal macrophages. Mol Med Rep 2023; 27:70. [PMID: 36799161 PMCID: PMC9942250 DOI: 10.3892/mmr.2023.12957] [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: 10/10/2022] [Accepted: 01/12/2023] [Indexed: 02/12/2023] Open
Abstract
Hepatocyte growth factor (HGF) serves key roles in cell motility, proliferation and immunoregulatory functions. However, the effect of HGF on macrophages is unclear. The present study aimed to elucidate the effect of HGF on the phenotypic alterations of intestinal lamina propria mononuclear cells (LPMCs). Colitis was induced in a mouse model using dextran sodium sulfate (DSS). Subsequently, LPMCs were isolated from the mice with chronic colitis and the expression levels of cytokine‑encoding genes in the LPMCs were determined. CD11b‑positive macrophages isolated from LPMCs were cultured with HGF, and alterations in the levels of M1 or M2 markers were evaluated by reverse transcription‑quantitative polymerase chain reaction (RT‑qPCR) and flow cytometry. In addition, the cytokine levels were assessed using RT‑qPCR and ELISA. HGF shifted the phenotype of macrophages from M1 to M2‑like, as determined by increased mRNA expression levels of arginase‑1, CD206 and IL‑10, and reduced mRNA expression levels of CD86 and IL‑6 in mice with DSS‑induced colitis. Moreover, HGF could ameliorate DSS‑induced colitis owing to its immunosuppressive effect on immune cells. These findings indicated that HGF treatment may not only promote the regeneration of epithelial cells but also lead to tissue repair by phenotypic alteration of M1 macrophages to M2‑like macrophages.
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Kabayama M, Sasaki F, Hidehito M, Fujino Y, Yano H, Tanaka A, Arima S, Tanoue S, Hashimoto S, Kanmura S, Hirade H, Nishiguchi A, Taguchi T, Ido A. Effects of Sprayable, Highly Adhesive Hydrophobized Gelatin Microparticles on Endoscopic Submucosal Dissection: A Swine Model. Digestion 2022; 104:137-147. [PMID: 36470222 DOI: 10.1159/000526650] [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: 03/10/2022] [Accepted: 08/10/2022] [Indexed: 02/04/2023]
Abstract
INTRODUCTION Sprayable wound dressings containing hydrophobized microparticles (hMPs) are characterized by strong adhesiveness. We examined the effect of hMPs derived from Alaska pollock gelatin on endoscopic submucosal dissection (ESD) ulcers. METHODS (1) In an in vivo model of miniature swine gastric ESD, gastric ulcers were created by ESD and then sprayed with hMPs or untreated followed by microscopic examination. (2) In an ex vivo ESD model of resected stomach, a pinhole-shaped perforation was created on the ESD ulcer of resected stomach; hMPs were then sprayed on the perforation; and air leakage and intragastric pressure were measured. (3) In an in vivo duodenal ESD model of miniature swine, duodenal artificial ESD ulcers with pinhole-shaped perforation were examined; ulcers were classified into hMPs-sprayed and nonsprayed groups, and inflammation in the intrinsic muscle layer and serosa were compared between the groups. RESULTS (1) Histological observation of submucosal tissues showed a decreased number of invading inflammatory cells in hMP-sprayed tissues compared with the control in miniature swine gastric ESD (p < 0.05). In addition, the rates of anti-alpha smooth muscle actin and type I collagen positivity were significantly lower in the hMPs group than in the control group (p < 0.05). (2) Intragastric pressure could not be measured in the nonsprayed group, whereas no air leakage was observed in the sprayed group when pressurized up to 26 mm Hg in the resected stomach model. (3) The sprayed group showed suppressed inflammation of the intrinsic muscular layer and serosa in both cases compared with the nonsprayed group in miniature swine duodenal ESD (p < 0.05). CONCLUSIONS Sprayable, tissue-adhesive hMPs are a promising medical material for intraoperative and postoperative treatment of ESD-induced wound via anti-inflammation and strong adhesiveness.
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Hashimoto S, Tanoue S, Fujino Y, Hinokuchi M, Iwaya H, Arima S, Ido A. Endoscopic ultrasonography-guided hybrid rendezvous technique for pancreatic stenting in a patient with pancreatoduodenectomy. Endoscopy 2021; 53:E213-E214. [PMID: 32916721 DOI: 10.1055/a-1244-9482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
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Hashimoto S, Iwaya H, Tanoue S, Fujino Y, Hinokuchi M, Arima S, Ido A. Salvage endoscopic ultrasound-guided rendezvous technique for disconnected pancreatic duct syndrome in a patient with severe acute pancreatitis. Endoscopy 2021; 53:450-451. [PMID: 32707583 DOI: 10.1055/a-1216-0809] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Ishimaru T, Mine Y, Fujino Y. Two definitions of presenteeism: sickness presenteeism and impaired work function. Occup Med (Lond) 2021; 70:95-100. [PMID: 32009152 DOI: 10.1093/occmed/kqaa009] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Two major definitions exist for presenteeism: sickness presenteeism and impaired work function. The evidence for comparing previous studies on presenteeism is insufficient because of the different definitions of presenteeism used. AIMS To assess the relationship between the two major definitions of presenteeism. METHODS This cross-sectional study analysed secondary data on 5334 respondents to an employee survey administered in a construction company in Japan. Impaired work function was measured using the Work Functioning Impairment Scale (WFun). Multiple logistic regression was performed. RESULTS A strong linear association was observed between the number of days of sickness presenteeism and impaired work function (all P < 0.001). In contrast, the number of days of sickness absence was only partially positively associated with impaired work function. All choices for most frequent health problem were positively associated with impaired work function, beginning with mental problems (adjusted odds ratio [OR] = 20.45, 95% confidence interval [CI]: 14.94-28.01), followed by malaise (adjusted OR = 11.91, 95% CI: 9.08-15.62) and sleeping problems (adjusted OR = 8.62, 95% CI: 6.57-11.33). CONCLUSIONS A strong relationship was observed between the two major definitions of presenteeism, even after adjusting for a variety of chronic health conditions. Although a consensus on the definition of presenteeism is yet to be reached, this study provides insight on comparing existing studies on presenteeism.
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Goto E, Ishikawa H, Okuhara T, Ueno H, Okada H, Fujino Y, Kiuchi T. Presenteeism among workers: health-related factors, work-related factors and health literacy. Occup Med (Lond) 2020; 70:564-569. [PMID: 33180107 DOI: 10.1093/occmed/kqaa168] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Presenteeism is an important factor in workers' health. However, few studies have examined how variables such as socio-economic status, health status, workplace status and health literacy correlate with and affect presenteeism. AIMS To assess the correlates of presenteeism with a focus on health-related factors, work-related factors and health literacy. METHODS We conducted a cross-sectional study of 2914 Japanese workers from one company. We used a self-administered questionnaire to assess socio-demographic characteristics, health status, work environment, presenteeism and health literacy. RESULTS Forty-one per cent of participants were under 40 years of age and 70% were male. We found that 59% of the participants were at high risk of presenteeism. Presenteeism was associated with sex, age, household income, marital status, health-related factors (i.e. self-rated health status, dietary choices, exercise habits), work-related factors (i.e. workplace support, job demands, job control) and health literacy. Logistic regression analyses indicated that presenteeism was associated with self-rated health status, overtime hours, workplace support, job demands, job control and health literacy after adjusting for sex, age and income. CONCLUSIONS Health-related factors, work-related factors and health literacy are all associated with presenteeism. Improving the workplace environment, especially factors such as overtime working hours, workplace support, job demands and job control, and increasing health literacy may reduce presenteeism among general office workers.
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Tomizawa N, Chou S, Fujino Y, Matsuoka S, Yamamoto K, Inoh S, Nojo T, Kumamaru KK, Fujimoto S, Nakamura S. Impact of Abnormal Remote Stress Myocardial Blood Flow by Dynamic CT Perfusion on Clinical Outcomes. Sci Rep 2020; 10:10244. [PMID: 32581277 PMCID: PMC7314791 DOI: 10.1038/s41598-020-66992-w] [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: 12/13/2019] [Accepted: 06/01/2020] [Indexed: 12/05/2022] Open
Abstract
The objective of this study was to investigate the incremental prognostic value for adverse events of myocardial blood flow (MBF) derived from stress computed tomography perfusion (CTP) at remote myocardium over cardiac risk factors and ischemia. We prospectively analyzed 242 patients who underwent dynamic CTP and CT angiography. Adverse events were defined as a composite of all-cause mortality, non-fatal myocardial infarction, unstable angina, heart failure requiring hospitalization, peripheral artery disease, and stroke. MBF value was calculated in each myocardial segment and ischemia was defined as mild decrease in MBF in two consecutive segments or moderate decrease in a single segment accompanied with a coronary stenosis ≥50%. The mean MBF of the non-ischemic segments was defined as remote MBF. We divided the patients into two groups by median MBF value of 1.15 ml/min/g. During a median follow-up of 18 months, 18 patients had adverse events. Annual event rate showed a significant difference between patients with low (≤1.15 ml/min/g) and high (>1.15 ml/min/g) MBF (6.1% vs 1.8%, p = 0.02). Univariate analysis showed that low MBF was a significant predictor of events (hazard ratio (HR): 3.4; 95% confidence interval (CI): 1.2 to 12.0; p = 0.02). This relationship maintained significant after adjusted for the presence of ischemia and cardiac risk factors (HR: 3.0; 95%CI: 1.1 to 11.1; p = 0.04). In conclusion, MBF value ≤1.15 ml/min/g derived from dynamic CTP in remote myocardium is significantly related with poor outcome and this relationship was independent of myocardial ischemia and cardiac risk factors.
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Fujino Y, Nakamura R, Han HW, Yamashita I, Shimizu T, Shingubara S, Ito T. Electrochemical impedance spectroscopy study of liposome adsorption and rupture on self-assembled monolayer: Effect of surface charge. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114572] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Fujino Y, Miyagawa T, Torii M, Inoue M, Fujii Y, Okanishi H, Kanai Y, Masui R. Structural changes induced by ligand binding drastically increase the thermostability of the Ser/Thr protein kinase TpkD from Thermus thermophilus HB8. FEBS Lett 2020; 595:264-274. [PMID: 33159808 DOI: 10.1002/1873-3468.13996] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 10/26/2020] [Accepted: 11/02/2020] [Indexed: 11/06/2022]
Abstract
Thermophilic proteins maintain their structure at high temperatures through a combination of various factors. Here, we report the ligand-induced stabilization of a thermophilic Ser/Thr protein kinase. Thermus thermophilus TpkD unfolds completely at 55 °C despite the optimum growth temperature of 75 °C. Unexpectedly, we found that the TpkD structure is drastically stabilized by its natural ligands ATP and ADP, as evidenced by the increase in the melting temperature to 80 °C. Such a striking effect of a substrate on thermostability has not been reported for other protein kinases. Conformational changes upon ATP binding were observed in fluorescence quenching and limited proteolysis experiments. Urea denaturation of Trp mutants suggested that ATP binding affects not only the ATP-binding site, but also the remote regions. Our findings shed light on thermoadaptation of thermophilic proteins.
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Ishimaru T, Kubo T, Honno K, Toyokuni Y, Fujino Y. Near misses and presenteeism among paramedics. Occup Med (Lond) 2019; 69:593-597. [PMID: 31206581 DOI: 10.1093/occmed/kqz076] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Paramedics need to be in good physical health to be able to respond to emergencies. We hypothesized that near misses by paramedics and unanticipated incidents that cause no harm may be associated with presenteeism during emergency rescues. AIMS To examine the association between presenteeism and near misses among paramedics. METHODS A cross-sectional study was conducted among 254 paramedics using a self-administered questionnaire. Presenteeism was measured using the work functioning impairment scale (WFun). RESULTS Twelve per cent of respondents experienced high work function impairment indicating presenteeism. The rate of near-miss experiences steadily increased with increasing work function impairment among paramedics (WFun score category: middle, odds ratio (OR) 3.62, 95% confidence interval (CI) 1.62-8.11; high, OR 4.36, 95% CI 1.37-13.84; very high, OR 8.62, 95% CI 2.09-35.48). CONCLUSIONS This study demonstrated a positive relationship between impaired work function indicating presenteeism and near misses among paramedics. This suggests that presenteeism may be associated with errors that have the potential to cause serious accidents. Improved access to treatment for frequent health problems may reduce the number of incidents among paramedics.
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Yabushita H, Kawamoto H, Fujino Y, Tahara S, Horikoshi T, Tada M, Amano T, Onishi H, Nakajima A, Warisawa T, Watanabe Y, Yoshizaki T, Mitomo S, Sato T, Naganuma T, Ishiguro H, Kurita N, Nakamura S, Hozawa K, Nakamura S. Clinical Outcomes of Drug-Eluting Balloon for In-Stent Restenosis Based on the Number of Metallic Layers. Circ Cardiovasc Interv 2018; 11:e005935. [DOI: 10.1161/circinterventions.117.005935] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Kuroda Y, Fujino Y, Morita A, Tanioka Y, Suzuki V, Kawamura T, Ku Y, Saitoh Y. Successful 96-hour preservation of the canine pancreas. Transpl Int 2018. [DOI: 10.1111/tri.1992.5.s1.388] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kuroda Y, Fujino Y, Morita A, Tanioka Y, Suzuki Y, Kawamura T, Ku Y, Saitoh Y. The mechanism of action of the two-layer (Euro-Collins' solution/perfluorochemical) cold storage method in canine pancreas preservation. Transpl Int 2018. [DOI: 10.1111/tri.1992.5.s1.391] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Fujimoto K, Tsukahara T, Yamada Y, Yamamoto K, Motosuke M, Tanaka K, Tahara S, Tani K, Nakamura S, Fujino Y. Valuation Of Implanted-Stent Impact On Coronary Artery Trifurcation Blood Flow By Using CFD. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2018; 2018:3181-3184. [PMID: 30441070 DOI: 10.1109/embc.2018.8513023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We investigated the influence of stent implanted in left main coronary artery trifurcation on blood flow by means of CFD. We simulated various stent positions and arrangement patterns considering KBT. The velocity and WSS (wall shear stress) distribution were found to depend on the stent arrangements. In addition, a strut position inhibiting the inflow velocity peaks into the branched (LCX) vessel exhibited a strong impact, which provided suppression of WSS on the high-lateralside surface of the LCX entrance. By KBT, such an impact of stent implantation can be avoided.
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Sekine D, Fukata K, Amimoto K, Fujino Y, Inoue M, Inoue M, Takahashi Y, Takahashi H, Makita S. Analysis of the subjective postural vertical on diagonal plane in elderly subjects and left hemiparetic patients after stroke. Ann Phys Rehabil Med 2018. [DOI: 10.1016/j.rehab.2018.05.493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Tomizawa N, Fujino Y, Kamitani M, Chou S, Yamamoto K, Inoh S, Nojo T, Nakamura S. Longer diabetes duration reduces myocardial blood flow in remote myocardium assessed by dynamic myocardial CT perfusion. J Diabetes Complications 2018; 32:609-615. [PMID: 29627375 DOI: 10.1016/j.jdiacomp.2018.03.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Revised: 03/04/2018] [Accepted: 03/11/2018] [Indexed: 01/30/2023]
Abstract
AIMS To investigate the relationship of type 2 diabetes duration and myocardial blood flow (MBF) assessed by myocardial CT perfusion. MATERIALS AND METHODS We prospectively included 140 patients with type 2 diabetes who underwent dynamic myocardial CT perfusion exam. MBF of the remote myocardium was calculated using the deconvolution technique and the Voronoi method. The relationships of MBF and diabetic duration, diabetic complications, conventional risk factors, coronary calcium, and coronary stenosis were assessed by logistic regression analysis. RESULTS A weak but significantly negative relationship was present between diabetes duration and MBF (R2 = 0.05, p < 0.01). The average MBF of patients with a duration of >8 years was 13% lower than that of the remaining patients (1.11 ± 0.35 vs 1.28 ± 0.27 ml min-1 g-1, p < 0.01). Duration of one year was associated with a 6% increased risk for low MBF (<1.18 ml min-1 g-1) (odds ratio 1.06, 95% confidence interval 1.01-1.12, p < 0.05). Calcium score was also a significant factor for low MBF (odds ratio 1.08 (per 100 Agatston units), 95% confidence interval 1.01-1.17, p < 0.05). CONCLUSION Longer diabetes duration is associated with lower MBF independent of conventional cardiac risk factors or the presence of coronary stenosis.
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Tada M, Fujino Y, Tahara S, Yabushita H, Tani K, Naganuma T, Ishiguro H, Kurita N. OPTICAL COHERENCE TOMOGRAPHY FINDINGS OF CHRONIC TOTAL OCCLUSION LESIONS. J Am Coll Cardiol 2018. [DOI: 10.1016/s0735-1097(18)31591-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Shida K, Amimoto K, Sawa K, Ikeda Y, Fujino Y, Takahashi H, Makita S. Changes of cortical activation during and after galvanic vestibular stimulation(GVS) – A functional near-infrared spectroscopy (fNIRS) study. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Oka Y, Tanno S, Kawasaki Y, Shimizu H, Fujino Y, Uetani T. Dual orexin receptor antagonist for the treatment of circadian rhythm sleep-wake disorders. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.844] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Hisanaga S, Kakeda S, Yamamoto J, Watanabe K, Moriya J, Nagata T, Fujino Y, Kondo H, Nishizawa S, Korogi Y. Pituitary Macroadenoma and Visual Impairment: Postoperative Outcome Prediction with Contrast-Enhanced FIESTA. AJNR Am J Neuroradiol 2017; 38:2067-2072. [PMID: 28912278 DOI: 10.3174/ajnr.a5394] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 06/06/2017] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Contrast-enhanced FIESTA can depict anterior optic pathways in patients with large suprasellar tumors. We assessed whether the degree of kink in the optic nerve at the optic canal orifice on contrast-enhanced FIESTA correlates with the postoperative improvement of visual impairment in patients with pituitary macroadenoma. MATERIALS AND METHODS Thirty-one patients with pituitary macroadenoma who underwent preoperative MR imaging and an operation were evaluated. We measured the optic nerve kinking angle on sagittal oblique contrast-enhanced FIESTA parallel to the optic nerve; the optic nerve kinking angle was defined as the angle between a line parallel to the planum sphenoidale and a line parallel to the intracranial optic nerve at the optic canal orifice. We used logistic regression analyses to determine whether the clinical (sex, age, and duration of symptoms) and imaging (tumor height, chiasmal compression severity, hyperintense optic nerve on T2WI, and optic nerve kinking angle) characteristics were associated with the postoperative improvement (good-versus-little improvement) of visual acuity disturbance and visual field defect. RESULTS There were 53 impaired sides before the operation: 2 sides with visual acuity disturbance alone, 25 with visual field defect alone, and 26 with both. After the operation, good improvement was found in 17 of the 28 sides with visual acuity disturbance and in 32 of the 51 sides with visual field defects. Only the optic nerve kinking angle was significantly associated with good improvement of the visual acuity disturbance (P = .011) and visual field defect (P = .002). CONCLUSIONS The degree of the optic nerve kinking angle was an independent predictor of postoperative improvement, indicating that irreversible damage to the optic nerve may be associated with its kinking at the optic canal orifice.
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