1.Working on Patient-Participation-Type Safety Measures in Medical Services
Yukari TOTANI ; Naoto YAMAMOTO
Journal of the Japanese Association of Rural Medicine 2007;56(5):730-732
In April, 2006, we made and distributed the pamphlet entitled “Declaration for safety measures in medical services.” Because we thought that sharing with patients in the safty target could lead to create a safe environment in the hospital.To make certain whether inpatients and nurses understood and practiced the declaration, we took a questionnaire survey. The results showed that about 90% of the medical staff and inpatients understood the declaration and thought it worked out well. However some of the medical staff answered that they thought it did not work out. We felt the necessity to educate the medical staff thoroughly. Moreover, we found out differences in the recognition between medical staff and patients. For example, medical staff wonders if they mistake the contents of injections. But most of patients worry about pain.The medical staff is always working nervously and anxiously. However, there arequite a few cases in which complaints or disputes result from insufficient understanding by patients although medical staff thought that it was checked and explained.We are now working on safety measures reflecting patient's opinions.
Safety
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seconds
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Work
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Patients
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participation
2.Use of Diffusion-Weighted Imaging for Cerebral Infarctions in Kainan General Hospital.
Koji MIZUTANI ; Tomotaka SUMIDA ; Shinichi UMEDA ; Naoto YAMAMOTO ; Toshihiko TANASAWA ; Koji HATTORI ; Tadao SUGATA ; Isao TANIMOTO
Journal of the Japanese Association of Rural Medicine 1996;45(1):28-32
Many reports say that DWI (diffusion-weighted-image) is very useful for the diagnosis of cerebral infarction, especially in the acute phase, but it is difficult to have a fine image because DWI is very sensitive to artifacts caused by the “body-move” of the patient.
About the degree of MPG (motion probing gradient), criteria are yet to be established. Many persons try in their own way. With MPG5, the intensity of CSF and that of the focal lesion are almost equal, so that it is difficult to distinguish infarcts from adjacent ventricles.
The stronger the degree of MPG is, the more artifacts or noises we get, We recommend MPG6 or 7 in the right-left direction.
3.Prevalence of left ventricular dyssynchrony in patients with heart failure assessed by a novel programmer-cardioGRAF
Canzhan ZHU ; Naoto TAKAHASHI ; Akira YAMAMOTO ; Masahira ISHIKAWA ; Naomi KAWAGUCHI ; Takahiro UCHIDA ; Kazuo MUNAKATA
Journal of Geriatric Cardiology 2009;6(3):151-156
Objectives Left ventricular systolic dyssynchrony is the most important determinant of response to cardiac resynchronization therapy (CRT), playing a vital role to predict improvement of systolic function or LV reverse remodeling. CardioGRAF is a novel programmer based on the ECG gated single photon emission computed tomography (G-SPECT) imaging to detect LV systolic and diastolic dyssynchrony simultaneously. This study was to investigate the prevalence of systolic and diastolic left ventricular (LV) dyssynchrony in patients with heart failure. Methods We retrospectively studied 69 patients with heart disease, including 31 patients who had symptoms of heart failure (NYHA class Ⅱ-Ⅲ), and 38 patients who had no symptoms of heart failure (NYHA class Ⅰ). G-SPECT data were analyzed by cardiaGRAF, and measurements included the time to end systole (TES), the time to peak ejection (TPE), the time to peak filling (TPF), TES+TPF and maximal difference (MD) of each parameters were obtained, using the 95th percentile of the control group as a cutoffof 150 ms for MD-TES, 139 ms for MD-TPE, 345 ms for MD-TPF and 315 ms for MD-TES+TPF. Results The prevalence of LV systolic dyssynchrony was significantly higher in heart failure patients with reduced LV ejection fraction (LVEF)<45% (72% for MD-TES; 64% for MD-TPE) compared with heart failure patients with preserved LVEF=45% (14% for both MD-TES and MD-TPE; P=0.002, P=0.005, respectively); The prevalence of MD-TES<150 ms was higher in NYHA class Ⅲ patients (64%) compared with NYHA class Ⅱ patients (27%, P=0.049). However, the prevalence of the LV diastolic dyssynchrony were high but not difference between NYHA class Ⅲ(47% for both MD-TPF and MD-TES+TPF) and class Ⅲ(63% for MD-TPF; 69% for MD-TES+TPF; P=NS) patients as well as between patients with preserved LVEF (43% for both MD-TPF and MD-TES+TPF) and patients with reduced LVEF(64% for MD-TPF; 72% for MD-TES+TPF; P=NS). Conclusions The prevalence of LV systolic dyssynchrony was high in heart failure patients with reduced LVEF. Diastolic dyssynchrony was common in patients with heart failure. CardioGRAF maybe a useful method to detect LV dyssynchrony.
4.The isolation and identification of apolipoprotein C-I in hormone-refractory prostate cancer using surface-enhanced laser desorption/ionization time-of-flight mass spectrometry.
Kaori YAMAMOTO-ISHIKAWA ; Hiroyoshi SUZUKI ; Masahiko NEZU ; Naoto KAMIYA ; Takashi IMAMOTO ; Akira KOMIYA ; Kazuyuki SOGAWA ; Takeshi TOMONAGA ; Fumio NOMURA ; Tomohiko ICHIKAWA
Asian Journal of Andrology 2009;11(3):299-307
Androgens play a central role in prostate cancer pathogenesis, and hence most of the patients respond to androgen deprivation therapies. However, patients tend to relapse with aggressive prostate cancer, which has been termed as hormone refractory. To identify the proteins that mediate progression to the hormone-refractory state, we used protein-chip technology for mass profiling of patients' sera. This study included 16 patients with metastatic hormone-refractory prostate cancer who were initially treated with androgen deprivation therapy. Serum samples were collected from each patient at five time points: point A, pre-treatment; point B, at the nadir of the prostate-specific antigen (PSA) level; point C, PSA failure; point D, the early hormone-refractory phase; and point E, the late hormone-refractory phase. Using surface-enhanced laser desorption/ionization time-of-flight mass spectrometry, we performed protein mass profiling of the patients' sera and identified a 6 640-Da peak that increased with disease progression. Target proteins were partially purified, and by amino acid sequencing the peak was identified as a fragment of apolipoprotein C-I (ApoC-I). Serum ApoC-I protein levels increased with disease progression. On immunohistochemical analysis, the ApoC-I protein was found localized to the cytoplasm of the hormone-refractory cancer cells. In this study, we showed an increase in serum ApoC-I protein levels in prostate cancer patients during their progression to the hormone-refractory state, which suggests that ApoC-I protein is related to progression of prostate cancer. However, as the exact role of ApoC-I in prostate cancer pathogenesis is unclear, further research is required.
Aged
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Amino Acid Sequence
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Antineoplastic Agents, Hormonal
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therapeutic use
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Apolipoprotein C-I
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analysis
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blood
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isolation & purification
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Blotting, Western
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Cell Line
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Disease Progression
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Drug Resistance, Neoplasm
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Humans
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Immunohistochemistry
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Male
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Middle Aged
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Molecular Sequence Data
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Prognosis
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Prostatic Neoplasms
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drug therapy
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metabolism
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Protein Array Analysis
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Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
5.Antimicrobial resistance profiles of vancomycin-resistant Enterococcus species isolated from laboratory mice
Hitoki YAMANAKA ; Ryuki KADOMATSU ; Toshikazu TAKAGI ; Makiko OHSAWA ; Naoto YAMAMOTO ; Noriaki KUBO ; Takahira TAKEMOTO ; Kazutaka OHSAWA
Journal of Veterinary Science 2019;20(2):e13-
Isolates of 24 enterococci, 5 Enterococcus casseliflavus and 19 Enterococcus gallinarum, possessing vanC genes and showing low-level resistance to vancomycin were obtained from mice from commercial mouse breeding companies. Since some of these isolates showed resistance to other antibiotics, the purpose of this study was to clarify the resistant profiles of these isolates. One E. casseliflavus isolate showed resistance to erythromycin with a minimal inhibitory concentration (MIC) of 8 μg/mL and also showed apparent resistance to fluoroquinolones with an MIC of 32 μg/mL for ciprofloxacin. The MICs of 2 other fluoroquinolone-resistant E. casseliflavus and E. gallinarum isolates were 3 and 6 μg/mL, respectively. These 3 resistant isolates showed an absence of macrolide- and fluoroquinolone-resistant genes, including amino acid substitutions in the quinolone resistance determining regions of DNA gyrase and topoisomerase IV. Resistance to tetracycline was detected in 2 E. gallinarum isolates that were highly resistant, exhibiting MICs of 48 and 64 μg/mL and possessing tet(O) genes. The results indicate that antibiotic-resistant enterococci are being maintained in some laboratory mouse strains that have never been treated with an antibiotic.
Amino Acid Substitution
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Animals
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Anti-Bacterial Agents
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Breeding
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Ciprofloxacin
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DNA Gyrase
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DNA Topoisomerase IV
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Drug Resistance, Microbial
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Enterococcus
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Erythromycin
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Fluoroquinolones
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Mice
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Tetracycline
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Vancomycin
6.Selective Inhibition of β-Catenin/Co-Activator Cyclic AMP Response Element-Binding Protein-Dependent Signaling Prevents the Emergence of Hapten-Induced Atopic Dermatitis-Like Dermatitis
Haruna MATSUDA-HIROSE ; Tomoko YAMATE ; Mizuki GOTO ; Akira KATOH ; Hiroyuki KOUJI ; Yuya YAMAMOTO ; Takashi SAKAI ; Naoto UEMURA ; Takashi KOBAYASHI ; Yutaka HATANO
Annals of Dermatology 2019;31(6):631-639
BACKGROUND: The canonical Wnt/β-catenin signaling pathway is a fundamental regulatory system involved in various biological events. ICG-001 selectively blocks the interaction of β-catenin with its transcriptional co-activator cyclic AMP response element-binding protein (CBP). Recent studies have provided convincing evidence of the inhibitory effects of ICG-001 on Wnt-driven disease models, such as organ fibrosis, cancer, acute lymphoblastic leukemia, and asthma. However, the effects of ICG-001 in atopic dermatitis (AD) have not been investigated. OBJECTIVE: To investigate whether β-catenin/CBP-dependent signaling was contributed in the pathogenesis of AD and ICG-001 could be a therapeutic agent for AD. METHODS: We examined the effects of ICG-001 in an AD-like murine model generated by repeated topical application of the hapten, oxazolone (Ox). ICG-001 or vehicle alone was injected intraperitoneally every day during the development of AD-like dermatitis arising from once-daily Ox treatment. RESULTS: Ox-induced AD-like dermatitis characterized by increases in transepidermal water loss, epidermal thickness, dermal thickness accompanied by increased myofibroblast and mast cell counts, and serum levels of thymic stromal lymphopoietin and thymus and activation-regulated chemokine, and decreases in stratum corneum hydration, were virtually normalized by the treatment with ICG-001. Elevated serum levels of periostin tended to be downregulated, without statistical significance. CONCLUSION: These results suggest that β-catenin/CBP-dependent signaling might be involved in the pathogenesis of AD and could be a therapeutic target.
Animals
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Asthma
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Chemokine CCL17
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Cyclic AMP Response Element-Binding Protein
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Cyclic AMP
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Dermatitis
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Dermatitis, Atopic
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Fibrosis
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Mast Cells
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Mice
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Myofibroblasts
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Oxazolone
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Precursor Cell Lymphoblastic Leukemia-Lymphoma
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Water