1.Hybrid Endovascular Stent Graft Repair with Reconstruction of Superior Mesenteric and Celiac Arteries for a Ruptured Thoracoabdominal Aortic Aneurysm
Daisuke Yotsumoto ; Yoshifumi Iguro ; Hiroyuki Yamamoto ; Kazuhisa Matsumoto ; Ryuzo Sakata
Japanese Journal of Cardiovascular Surgery 2008;37(3):185-188
A 77-year-old woman was referred to our hospital for treatment of a ruptured thoracoabdominal aortic aneurysm (TAAA) with a maximum diameter of 7cm. Considering her age and level of daily activity, the placement of an endovascular stent graft was performed as an emergency rescue procedure. For termination of the endoleak from the distal portion of the stent graft detected by CT the next day, another stent graft placement was added after establishment of blood supply to the superior mesenteric and celiac arteries by placing a Y-shaped graft from the abdominal aorta to each artery with success. The patient was discharged from our hospital 25days after surgery with disappearance of endoleak and good graft patency. A hybrid technique with grafting to abdominal branches, followed by placement of stent graft, can be an alternative treatment for such high-risk patients with ruptured TAAA.
2.Comparison of Early and Midterm Result of Endovascular Aneurysm Repair and Open Repair in the Treatment of Abdominal Aortic Aneurysms
Yoshifumi Iguro ; Hiroyuki Yamamoto ; Kenichi Arata ; Akira Kobayashi ; Masahiro Ueno ; Kouji Tao ; Syouichi Suehiro ; Ryuzo Sakata
Japanese Journal of Cardiovascular Surgery 2005;34(6):395-400
To evaluate a comparison for endovascular repair (EVAR) versus open repair (OR) for the treatment of abdominal aortic aneurysm (AAA). Data of all patients with infrarenal AAA treated electively, both with OR (107 cases) and EVAR (24 cases), at our institute between January 1999 and March 2004 were retrospectively reviewed. No difference was found between the 2 groups for sex, age, and AAA size. Cases of chronic obstructive pulmonary disease (20.8% vs 6.5%, p<0.04) and frequencies of laparotomy (25% vs 2.8%, p<0.001) were significantly more in the EVAR group than the OR group. In the initial results, deployment of the stent grafts was successful in all cases and complete thrombosis of the aneurysm was achieved in 21 cases (87.5%). One graft occlusion and a wound infection occurred in the EVAR group. OR was successfully performed in all cases. These were 6 cases of paralytic ileus, 1 of re-operation for hemorrhage, 1 of respiratory failure, and 1 of ischemic colitis in the OR group. One hospital death occurred in each group. Mean blood transfusion (0ml vs 238±345ml) and operation time (131±53min vs 250±76min) were significantly less in the EVAR group than the OR group. In the long term results, the cumulative survival rate was 88.0±6.5% at 1 and 2 years, 80.6±9.2% at 3 years in the EVAR group; 99.0±0.9% at 1 year, 94.1±2.6% at 2 years, 87.7±3.9% at 3 years in the OR group, with no difference between the 2 groups regarding survival rate. Four new endoleak and 3 graft infections were encountered in the EVAR group. Freedom from stent graft-related complications was 81.3±8.5% at 1 year, 61.4±11.9% at 2 years, 47.8±12.6% at 3 years in the EVAR group, but 100% at 1, 2 and 3 years in the OR group. Freedom from procedure-related complications in the EVAR group was significantly lower than that in OR group. In the long term results, EVAR was associated with more procedure-related complications. This finding may justify reappraisal of currently accepted EVAR for AAA management strategies.
3.Aortic Valve Replacement for Severe Aortic Stenosis with Severe Left Ventricular Dysfunction
Akihiro Higashi ; Yoshifumi Iguro ; Tetsuya Ueno ; Hiromu Terai ; Hiroyuki Yamamoto ; Masahiro Ueno ; Takayuki Ueno ; Ryuzo Sakata
Japanese Journal of Cardiovascular Surgery 2006;35(6):315-318
There is disagreement regarding the indications of surgery for cases of severe aortic stenosis (AS) with a decrease in left ventricular ejection fraction (EF) and a low aortic pressure gradient (PG), since there is a high perioperative risk associated with this condition. Hence, we investigated the surgical outcome of AS cases with impaired left ventricular function. Our department performed 144 aortic valve replacements (AVRs) for cases of AS and AS-dominant mild regurgitation (ASr) between January 2000 and September 2005. Among these cases, 9 patients had an EF under 35%, and these patients were selected as subjects and compared with a control group with an EF of more than 35%. Patients with accompanying coronary artery diseases that required treatment were excluded to avoid confounding effects on cardiac function. The mean age of the 9 subjects (4 men and 5 women) was 67.8±10.8 years old, with a range from 53 to 80 years old, and the subjects had the following mean background data: EF, 34.4±0.5%; left ventricular end-diastolic dimension (LVDd), 57.3±5.8mm; left ventricular end-systolic dimension (LVDs), 49.3±5.7mm; interventricular septum thickness (IVSth), 11.9±1.9mm; and left ventricular posterior wall thickness (LVPWth), 11.1±2.6mm. Characteristics such as left ventricular dilatation and thinning of the left ventricle myocardium were noted in these data. The cases were classified as severe AS because the mean aortic valve area (AVA) was 0.58±0.2cm2, but the peak aortic pressure gradient (peak PG) (65.2±32.7mmHg) in the 9 subjects was lower than that of the control group (97.0±65.2mmHg). All 9 subjects underwent aortic valve replacements (AVRs), with simultaneous mitral annuloplasty (MAP) in 3 cases, mitral valve replacement (MVR) in 1 case and performance of a Maze procedure in 1 case. No deaths occurred while the patients were in hospital. Postoperative complications included 2 cases of transient atrial fibrillation and 1 case of postoperative bleeding requiring rethoracotomy for hemostasis. The EF in the late postoperative period showed improvement in 8 cases and was unchanged in the remaining case; the mean postoperative EF was 56.9% for the 9 subjects. All cases were rated as improved based on the NYHA classification of cardiac performance, and the significant improvement in EF in 8 of the 9 cases suggests that surgery is safe and can improve prognosis for patients with advanced AS with myocardium thinning and decreased EF.
4.Aortic and Mitral Valve Replacements in a Patient with Extensive Calcification of Intervalvular Fibrous Body
Masaki Funamoto ; Kenji Minakata ; Kazuhiro Yamazaki ; Senri Miwa ; Akira Marui ; Hiroyuki Muranaka ; Fumie Takai ; Motonori Kumagai ; Takahiro Nakahara ; Ryuzo Sakata
Japanese Journal of Cardiovascular Surgery 2012;41(6):308-311
Extensive calcification of the mitral annulus presents a formidable technical challenge to surgeons and increases the risk of serious complications such as intractable hemorrhage, atrioventricular disruption, and ventricular rupture during mitral valve surgery. We present a case of aortic and mitral valve replacements for a patient with extensive calcification of an intervalvular fibrous body. A 76-year-old woman was admitted with dyspnea on effort, leg edema and syncope. Transthoracic echocardiography showed severe aortic stenosis, and mitral stenosis with regurgitation, and extensive mitral annular calcification. Decalcification was performed with CUSA and we selected a trans-aortic-valve approach for decalcification of the intervalvular fibrous body. The calcification was left to a certain extent in order to preserve annular strength. Postoperative echocardiography showed no perivalvular leakage from either prostheses. The patient was transferred to a local hospital for further rehabilitation.
5.Upregulation of macrophage migration inhibitory factor and calgizzarin by androgen in TM4 mouse Sertoli cells.
Hiroyuki KASUMI ; Shinji KOMORI ; Kazuko SAKATA ; Naoko YAMAMOTO ; Tomohiko YAMASAKI ; Yonehiro KANEMURA ; Koji KOYAMA
Asian Journal of Andrology 2006;8(5):549-554
AIMTo identify proteins induced by androgen in Sertoli cells during spermatogenesis.
METHODSWe analyzed protein profiles in TM4 Sertoli cells treated with dihydrotestosterone (DHT) using surface enhanced laser desorption ionization time-of-flight mass spectrometry (SELDI-TOF-MS).
RESULTSWe found increases in the expression of a 5.0-kDa protein at 15 min, an 11.3-kDa protein at 24 h and 4.3 kDa, 5.7 kDa, 5.8 kDa, 9.95 kDa and 9.98 kDa proteins at 48 h after the treatment. In contrast, the expression of 6.3 kDa and 8.6 kDa proteins decreased at 30 min, and 4.9 kDa, 5.0 kDa, 12.4 kDa and 19.8 kDa proteins at 48 h after the treatment. The 11.3-kDa protein was identified as macrophage migration inhibitory factor (MIF) known to having various functions. The 9.98-kDa protein was identified as calgizzarin related to calcium channels. The timing of their expression suggests that MIF and calgizzarin are involved in late regulation of spermatogenesis in Sertoli cells by androgen.
CONCLUSIONMIF and calgizzarin are two important androgen-responsive proteins produced by Sertoli cells and they might play a role in regulating spermatogenesis.
Androgens ; pharmacology ; Animals ; Cell Line ; Dihydrotestosterone ; pharmacology ; Gene Expression Regulation ; drug effects ; Kinetics ; Macrophage Migration-Inhibitory Factors ; genetics ; Male ; Mice ; Protein Array Analysis ; S100 Proteins ; genetics ; Sertoli Cells ; drug effects ; physiology ; Spermatogenesis
6.Genetics and Biomarkers of Moyamoya Disease: Significance of RNF213 as a Susceptibility Gene.
Miki FUJIMURA ; Shinya SONOBE ; Yasuo NISHIJIMA ; Kuniyasu NIIZUMA ; Hiroyuki SAKATA ; Shigeo KURE ; Teiji TOMINAGA
Journal of Stroke 2014;16(2):65-72
Moyamoya disease is characterized by a progressive stenosis at the terminal portion of the internal carotid artery and an abnormal vascular network at the base of the brain. Although its etiology is still unknown, recent genome-wide and locus-specific association studies identified RNF213 as an important susceptibility gene of moyamoya disease among East Asian population. A polymorphism in c.14576G>A in RNF213 was identified in 95% of familial patients with moyamoya disease and 79% of sporadic cases, and patients having this polymorphism were found to have significantly earlier disease onset and a more severe form of moyamoya disease, such as the presentation of cerebral infarction and posterior cerebral artery stenosis. The exact mechanism by which the RNF213 abnormality relates to moyamoya disease remains unknown, while recent reports using genetically engineered mice lacking RNF213 by homologous recombination provide new insight for the pathogenesis of this rare entity. Regarding biomarkers of moyamoya disease, moyamoya disease is characterized by an increased expression of angiogenic factors and pro-inflammatory molecules such as vascular endothelial growth factors and matrix metalloproteinase-9, which may partly explain its clinical manifestations of the pathologic angiogenesis, spontaneous hemorrhage, and higher incidence of cerebral hyperperfusion after revascularization surgery. More recently, blockade of these pro-inflammatory molecules during perioperative period is attempted to reduce the potential risk of surgical complication including cerebral hyperperfusion syndrome. In this review article, we focus on the genetics and biomarkers of moyamoya disease, and sought to discuss their clinical implication.
Angiogenesis Inducing Agents
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Animals
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Asian Continental Ancestry Group
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Biomarkers*
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Brain
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Carotid Artery, Internal
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Cerebral Infarction
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Constriction, Pathologic
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Genetics*
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Hemorrhage
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Homologous Recombination
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Humans
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Incidence
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Matrix Metalloproteinase 9
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Mice
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Moyamoya Disease*
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Neovascularization, Pathologic
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Perioperative Period
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Posterior Cerebral Artery
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Vascular Endothelial Growth Factor A
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Vascular Endothelial Growth Factors
7.Clinical and MRI Characteristics of Uterine Cervical Adenocarcinoma: Its Variants and Mimics
Tsukasa SAIDA ; Akiko SAKATA ; Yumiko Oishi TANAKA ; Hiroyuki OCHI ; Toshitaka ISHIGURO ; Masafumi SAKAI ; Hiroaki TAKAHASHI ; Toyomi SATOH ; Manabu MINAMI
Korean Journal of Radiology 2019;20(3):364-377
Adenocarcinoma currently accounts for 10–25% of all uterine cervical carcinomas and has a variety of histopathological subtypes. Among them, mucinous carcinoma gastric type is not associated with high-risk human papillomavirus (HPV) infection and a poor prognosis, while villoglandular carcinoma has an association with high-risk HPV infection and a good prognosis. They show relatively characteristic imaging findings which can be suggested by magnetic resonance imaging (MRI), though the former is sometimes difficult to be distinguished from lobular endocervical glandular hyperplasia. Various kinds of other tumors including squamous cell carcinoma should be also differentiated on MRI, while it is currently difficult to distinguish them on MRI, and HPV screening and pathological confirmation are usually necessary for definite diagnosis and further patient management.
Adenocarcinoma
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Adenocarcinoma, Mucinous
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Carcinoma, Squamous Cell
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Diagnosis
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Humans
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Hyperplasia
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Magnetic Resonance Imaging
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Mass Screening
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Prognosis
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Uterine Cervical Neoplasms
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Uterus
8.Urinary N-terminal pro-B-type natriuretic peptide as a biomarker for cardiovascular events in a general Japanese population: the Hisayama Study.
Keisuke YAMASAKI ; Jun HATA ; Tomomi IDE ; Takuya NAGATA ; Satoko SAKATA ; Daigo YOSHIDA ; Takanori HONDA ; Yoichiro HIRAKAWA ; Toshiaki NAKANO ; Takanari KITAZONO ; Hiroyuki TSUTSUI ; Toshiharu NINOMIYA
Environmental Health and Preventive Medicine 2021;26(1):47-47
BACKGROUND:
Epidemiological evidence has shown that serum N-terminal pro-brain natriuretic peptide (NT-proBNP) concentrations, a diagnostic biomarker for heart failure, are positively associated with cardiovascular risk. Since NT-proBNP in serum is excreted in urine, it is hypothesized that urinary NT-proBNP concentrations are correlated with serum concentrations and linked with cardiovascular risk in the general population.
METHODS:
A total of 3060 community-dwelling residents aged ≥ 40 years without history of cardiovascular disease (CVD) were followed up for a median of 8.3 years (2007-2015). Serum and urinary concentrations of NT-proBNP at baseline were compared. The hazard ratios (HRs) and their 95% confidence intervals (CIs) for the association between NT-proBNP concentrations and the risk of developing CVD were computed using the Cox proportional hazards model.
RESULTS:
The median values (interquartile ranges) of serum and urinary NT-proBNP concentrations at baseline were 56 (32-104) pg/mL and 20 (18-25) pg/mL, respectively. There was a strong quadratic correlation between the serum and urinary concentrations of NT-proBNP (coefficient of determination [R
CONCLUSIONS
The present study demonstrated that urinary NT-proBNP concentrations were well-correlated with serum concentrations and were positively associated with cardiovascular risk. Given that urine sampling is noninvasive and does not require specially trained personnel, urinary NT-proBNP concentrations have the potential to be an easy and useful biomarker for detecting people at higher cardiovascular risk.
Adult
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Aged
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Aged, 80 and over
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Biomarkers/urine*
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Cardiovascular Diseases/urine*
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Female
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Heart Failure/diagnosis*
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Humans
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Incidence
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Japan/epidemiology*
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Male
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Middle Aged
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Natriuretic Peptide, Brain/urine*
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Peptide Fragments/urine*
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Prospective Studies
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Risk Assessment
9.For making a declaration of countermeasures against the falling birth rate from the Japanese Society for Hygiene: summary of discussion in the working group on academic research strategy against an aging society with low birth rate.
Kyoko NOMURA ; Kanae KARITA ; Atsuko ARAKI ; Emiko NISHIOKA ; Go MUTO ; Miyuki IWAI-SHIMADA ; Mariko NISHIKITANI ; Mariko INOUE ; Shinobu TSURUGANO ; Naomi KITANO ; Mayumi TSUJI ; Sachiko IIJIMA ; Kayo UEDA ; Michihiro KAMIJIMA ; Zentaro YAMAGATA ; Kiyomi SAKATA ; Masayuki IKI ; Hiroyuki YANAGISAWA ; Masashi KATO ; Hidekuni INADERA ; Yoshihiro KOKUBO ; Kazuhito YOKOYAMA ; Akio KOIZUMI ; Takemi OTSUKI
Environmental Health and Preventive Medicine 2019;24(1):14-14
In 1952, the Japanese Society for Hygiene had once passed a resolution at its 22nd symposium on population control, recommending the suppression of population growth based on the idea of cultivating a healthier population in the area of eugenics. Over half a century has now passed since this recommendation; Japan is witnessing an aging of the population (it is estimated that over 65-year-olds made up 27.7% of the population in 2017) and a decline in the birth rate (total fertility rate 1.43 births per woman in 2017) at a rate that is unparalleled in the world; Japan is faced with a "super-aging" society with low birth rate. In 2017, the Society passed a resolution to encourage all scientists to engage in academic researches to address the issue of the declining birth rate that Japan is currently facing. In this commentary, the Society hereby declares that the entire text of the 1952 proposal is revoked and the ideas relating to eugenics is rejected. Since the Society has set up a working group on the issue in 2016, there have been three symposiums, and working group committee members began publishing a series of articles in the Society's Japanese language journal. This commentary primarily provides an overview of the findings from the published articles, which will form the scientific basis for the Society's declaration. The areas we covered here included the following: (1) improving the social and work environment to balance between the personal and professional life; (2) proactive education on reproductive health; (3) children's health begins with nutritional management in women of reproductive age; (4) workplace environment and occupational health; (5) workplace measures to counter the declining birth rate; (6) research into the effect of environmental chemicals on sexual maturity, reproductive function, and the children of next generation; and (7) comprehensive research into the relationship among contemporary society, parental stress, and healthy child-rearing. Based on the seven topics, we will set out a declaration to address Japan's aging society with low birth rate.
Aging
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Birth Rate
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trends
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Child
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Child Health
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Environmental Exposure
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adverse effects
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prevention & control
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Female
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Health Planning Guidelines
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Humans
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Japan
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epidemiology
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Male
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Occupational Health
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Reproductive Health
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education
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Research Design
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standards
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Societies, Scientific
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organization & administration
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Stress, Psychological
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prevention & control
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Women's Health