検索結果 3875 件
| JaLCDOI | 10.18926/AMO/45267 |
|---|---|
| フルテキストURL | 65_2_91.pdf |
| 著者 | Nagamatsu, Tomohiro| Sakoda, Akihiro| Kataoka, Takahiro| Ono, Toshiro| Yamaoka, Kiyonori| |
| 抄録 | No research has been conducted on the radiation influence of tobacco on the alimentary system, although there have been some previous works on the respiratory system. In this study, the radioactive concentrations of 210Pb and 40K in a cigarette sample were first measured. The transfer factors of the nuclides from tobacco into smoke and solution (saliva and/or alcohol) were then examined. Moreover, the radiation doses from smoke inhalation were also evaluated. The radioactive concentrations of 210Pb and 40K in the cigarette tobacco were 0.01 and 0.3 Bq/cigarette. Since this 210Pb activity and the 210Po activity previously reported for the same sample were comparable, it can be concluded that there was a radioactive equilibrium between the 2 nuclides. The observed transfer factor of 210Pb (12%) into smoke was almost the same as that of 40K (15%), whereas the reported value for 210Po (60%) was significantly higher. The radiation doses due to inhalation of cigarette smoke varied from organ to organ, depending on the organotropic properties of the nuclide. For example, the kidneys, respiratory tract, and spleen showed relatively high doses from 210Pb and 210Po. The leaching rates indicated an inconsistent tendency related to solution types. This result could suggest that alcohol drinking, which is common in smokers, does not especially enhance the leaching characteristics. |
| キーワード | tobacco radionuclides smoking intake radiation exposure |
| Amo Type | Original Article |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2011-04 |
| 巻 | 65巻 |
| 号 | 2号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 91 |
| 終了ページ | 95 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | CopyrightⒸ 2011 by Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 21519366 |
| Web of Science KeyUT | 000289818800004 |
| JaLCDOI | 10.18926/AMO/45266 |
|---|---|
| フルテキストURL | 65_2_81.pdf |
| 著者 | Sasaki, Motofumi| Shikata, Kenichi| Okada, Shinichi| Miyamoto, Satoshi| Nishishita, Shingo| Usui Kataoka, Hitomi| Sato, Chikage| Wada, Jun| Ogawa, Daisuke| Makino, Hirofumi| |
| 抄録 | Glomerular hyperfiltration is a common pathway leading to glomerulosclerosis in various kinds of kidney diseases. The 5/6 renal ablation is an established experimental animal model for glomerular hyperfiltration. On the other hand, low-grade inflammation is also a common mechanism for the progression of kidney diseases including diabetic nephropathy and atherosclerosis. Here we analyzed the gene expression profile in the remnant kidney tissues of 5/6 nephrectomized mice using a DNA microarray system and compared it with that of sham-operated control mice. The 5/6 nephrectomized mice showed glomerular hypertrophy and an increase in the extracellular matrix in the glomeruli. DNA microarray analysis indicated the up-regulated expression of various kinds of genes related to the inflammatory process in remnant kidneys. We confirmed the up-regulated expression of platelet factor-4, and monocyte chemoattractant protein-1, 2, and 5 in remnant kidneys by RT-PCR. The current results suggest that the inflammatory process is involved in the progression of glomerulosclerosis and is a common pathway of the pathogenesis of kidney disease. |
| キーワード | kidney inflammation chemokine |
| Amo Type | Original Article |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2011-04 |
| 巻 | 65巻 |
| 号 | 2号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 81 |
| 終了ページ | 89 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | CopyrightⒸ 2011 by Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 21519365 |
| Web of Science KeyUT | 000289818800003 |
| JaLCDOI | 10.18926/AMO/45265 |
|---|---|
| フルテキストURL | 65_2_71.pdf |
| 著者 | Sato, Kimiko| Oda, Megumi| |
| 抄録 | A questionnaire survey was administered to 317 parents who attended infant health check-ups in City B, Okayama Prefecture between October, 2008 and March, 2009. The questionnaire survey studied 7 factors based on the PRECEDE-PROCEED Model. We analysed factors that affected oral health behaviour and attendance at scheduled dental health check-ups. The survey containing 22 items concerning matters such as 'QOL' and 'health problems' was posted to parents and guardians in advance, and then collected on the day of the medical check-up. The collected data was analysed using the t-test and Pearson's correlation coefficient, following which we conducted a covariance structure analysis. The results showed that dental health behaviour was directly affected by reinforcing factors, and indirectly associated with enabling and predisposing factors influenced by reinforcing factors. It was also shown that predisposing factors and oral health behaviour were associated with attendance at scheduled oral health check-ups. The results indicated that strengthening oral health education by sharing knowledge that acts as predisposing factors and introducing adaptations of oral health behaviour that that fit individual lives will lead to improved attendance at scheduled dental health check-ups. |
| キーワード | PRECEDE-PROCEED model dental check-ups dental health behaviour |
| Amo Type | Original Article |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2011-04 |
| 巻 | 65巻 |
| 号 | 2号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 71 |
| 終了ページ | 80 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | CopyrightⒸ 2011 by Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 21519364 |
| Web of Science KeyUT | 000289818800002 |
| JaLCDOI | 10.18926/AMO/45264 |
|---|---|
| フルテキストURL | 65_2_63.pdf |
| 著者 | Mizoguchi, Yoshinori| Suzuki, Etsuji| Tsuchida, Hiroaki| Tsuda, Toshihide| Yamamoto, Eiji| Nakase, Katsumi| Doi, Hiroyuki| |
| 抄録 | There have been only 2 reports of a large-scale foodborne outbreak arising from Salmonella enterica serotype Braenderup infection worldwide. On August 9, 2008, an outbreak originating in boxed lunches occurred in Okayama, Japan. We conducted a cohort study of 786 people who received boxed lunches from a particular catering company and collected 644 questionnaires (response rate:82%). Cases were defined as those presenting with diarrhea (≧4 times in 24h) or fever (≧38℃) between 12 am on August 8 and 12 am on August 14. We identified 176 cases (women/men:39/137);younger children (aged＜10 years) appeared to more frequently suffer severe symptoms. Three food items were significantly associated with higher risk of illness;tamagotoji (soft egg with mixed vegetables and meat) (relative risk (RR):11.74, 95% confidence interval (CI):2.98-46.24), pork cooked in soy sauce (RR:3.17, 95% CI:1.24-8.10), and vinegared food (RR:4.13, 95% CI:1.60-10.63). Among them, only the RR of tamagotoji was higher when we employed a stricter case definition. Salmonella Braenderup was isolated from 5 of 9 sampled cases and 6 food handlers. It is likely that unpasteurized liquid eggs contaminated by Salmonella Braenderup and used in tamagotoji caused this outbreak. |
| キーワード | boxed lunch cohort study foodborne diseases Salmonella Braenderup unpasteurized liquid eggs |
| Amo Type | Original Article |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2011-04 |
| 巻 | 65巻 |
| 号 | 2号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 63 |
| 終了ページ | 69 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | CopyrightⒸ 2011 by Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 21519363 |
| Web of Science KeyUT | 000289818800001 |
| JaLCDOI | 10.18926/AMO/43832 |
|---|---|
| フルテキストURL | 65_1_59.pdf |
| 著者 | Yasuhara, Takao| Miyoshi, Yasuyuki| Date, Isao| |
| 抄録 | A case of a Chiari malformation with an extraordinarily thick occipital bone is described. The thick occipital bone might make the posterior fossa narrow with consequent herniation of the cerebellar tonsils to the foramen magnum and formation of a syrinx. At dural plasty, well-developed marginal and occipital sinuses should be deliberately handled with the preservation of normal venous drainage. This case gives us the essence of the occurrence mechanisms of Chiari malformation and foramen magnum decompression. |
| キーワード | Chiari malformation dural plasty foramen magnum decompression syrinx venous drainage |
| Amo Type | Case Report |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2011-02 |
| 巻 | 65巻 |
| 号 | 1号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 59 |
| 終了ページ | 61 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | CopyrightⒸ 2011 by Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 21339798 |
| Web of Science KeyUT | 000287620500009 |
| JaLCDOI | 10.18926/AMO/43831 |
|---|---|
| フルテキストURL | 65_1_55.pdf |
| 著者 | Miki, Kentaroh| Orita, Yorihisa| Kumase, Fumiaki| Sugaya, Akiko| Hirai, Misato| Noyama, Yasuyuki| Nakai, Kiyoko| Narita, Akiko| Seguchi, Jiroh| |
| 抄録 | Orbital emphysema is an abnormal condition in which air is present within the orbit. We report a rare case of a 19-year-old man who suffered syncopic attacks caused by sniffles following orbital emphysema as a result of trauma. Treating rhinitis is important in patients with orbital emphysema, and patients with cardiac disorders in addition to those with this condition must be warned about the risks of sniffles, sneezing, or nose blowing. |
| キーワード | emphysema syncopic attack sniffle trauma vagovagal reflex |
| Amo Type | Case Report |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2011-02 |
| 巻 | 65巻 |
| 号 | 1号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 55 |
| 終了ページ | 57 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | CopyrightⒸ 2011 by Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 21339797 |
| Web of Science KeyUT | 000287620500008 |
| JaLCDOI | 10.18926/AMO/43830 |
|---|---|
| フルテキストURL | 65_1_49.pdf |
| 著者 | Iguchi, Toshihiro| Idani, Hitoshi| Asami, Shinya| Endo, Hisashi| Inaba, Yoshitaka| Arai, Yasuaki| Kanazawa, Susumu| |
| 抄録 | We administered hepatic arterial infusion chemotherapy (HAIC) prior to FOLFOX to three patients with unresectable liver metastases from colorectal cancer. The patients' disease state was found to be highly advanced based on both computed tomography findings and liver function tests. The treatment strategy included an initial administration of HAIC to control liver metastases and improve liver function in order to facilitate the subsequent safe administration of FOLFOX without drug loss. As the HAIC regimen, 1,000mg/m2 of 5-FU was administered weekly by continuous 5-h infusion after performing laboratory investigations through an implanted port-catheter system. After 3 HAIC cycles administered over 3 consecutive weeks, the mean alkaline phosphatase levels decreased from 969.3IU/l to 422IU/l due to shrinkage of the liver metastases. Thereafter, FOLFOX without drug loss could be safely initiated for all patients. Two patients succumbed 488 and 333 days after HAIC was initiated;the third patient is still alive and has been followed-up for 1215 days. The combined use of HAIC and standard systemic chemotherapy could be a feasible and efficacious treatment in highly advanced cases of liver dysfunction. |
| キーワード | colorectal cancer hepatic arterial infusion chemotherapy liver metastasis port-catheter system |
| Amo Type | Case Report |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2011-02 |
| 巻 | 65巻 |
| 号 | 1号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 49 |
| 終了ページ | 53 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | CopyrightⒸ 2011 by Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 21339796 |
| Web of Science KeyUT | 000287620500007 |
| JaLCDOI | 10.18926/AMO/43829 |
|---|---|
| フルテキストURL | 65_1_41.pdf |
| 著者 | Tokumori, Kimihiko| Wang, Da-Hong| Takigawa, Tomoko| Takaki, Jiro| Ogino, Keiki| |
| 抄録 | This study aimed to determine whether there was any association between the regional climate and the proportion of people with joint pain. Regional climate data between 1971 and 2000 were obtained from the Japan Meteorological Agency. The variables used in the cluster analysis included sunlight hours, amount of precipitation, number of days with precipitation, and temperature. The regional proportion of people with joint pain was obtained from the National Survey for Health in 2001. After performing a cluster analysis, one-way ANOVA and Welch's test were used to determine whether the climate characteristics of the clusters were significantly different. Within each cluster, stepwise multiple linear regression analyses were performed. We found that sunlight hours showed a direct, negative association with the proportion of people with joint pain (adjusted R2＝0.532, p＝0.016) in cluster 1, which was characterized as the region with the fewest total hours of sunlight, less precipitation, a modest number of rainy days, and low temperature. In the other clusters, the regional female population rate (cluster 2) and the senior population rate (cluster 3, 4) were the primary predictors. We concluded that the degree of exposure to sunlight may play a crucial role in prevention of joint pain. This finding should encourage people to set aside some time for staying outdoors in their daily lives. |
| キーワード | climate joint pain sunlight hours cluster analysis |
| Amo Type | Original Article |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2011-02 |
| 巻 | 65巻 |
| 号 | 1号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 41 |
| 終了ページ | 48 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | CopyrightⒸ 2011 by Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 21339795 |
| Web of Science KeyUT | 000287620500006 |
| JaLCDOI | 10.18926/AMO/43828 |
|---|---|
| フルテキストURL | 65_1_33.pdf |
| 著者 | Yanagawa, Youichi| Nishi, Kouichirou| Imamura, Tomonori| Sakamoto, Toshihisa| |
| 抄録 | Computed tomography (CT) is superior for the detection of substances with low radiolucency in comparison with abdominal roentgenograms. In the present study, medical chart review was retrospectively performed for patients who were admitted and underwent plain CT including the stomach on arrival to investigate whether CT is useful for diagnosing overdose (OD). The subjects were divided into patients with OD who did not undergo gastric lavage (OD group) and those without OD (Control group). The presence of a radiopaque area (Hounsfield number over 100 on a range of interest of 3mm2) in the stomach on CT was defined as a positive finding. The average Glasgow Coma Scale in the OD group (n＝11) was significantly lower than that in the Control group (n＝137). Positive findings on CT were found more frequently in the OD group than in the Control group (100 vs. 19.7%, p＜0.0001). Based on the finding of a high-density deposition in the bottom of the stomach, the CT predicted OD with 98.5% specificity. Accordingly, CT findings of a high-density deposition in the stomach of a patient with a diminished consciousness may suggest the presence of a recent overdose. |
| キーワード | overdose diagnosis CT |
| Amo Type | Original Article |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2011-02 |
| 巻 | 65巻 |
| 号 | 1号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 33 |
| 終了ページ | 39 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | CopyrightⒸ 2011 by Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 21339794 |
| Web of Science KeyUT | 000287620500005 |
| JaLCDOI | 10.18926/AMO/43827 |
|---|---|
| フルテキストURL | 65_1_27.pdf |
| 著者 | Togami, Taro| Yamamoto, Yuka| Satoh, Katashi| Kameyama, Reiko| Murota, Makiko| Kimura, Naruhide| Nishiyama, Yoshihiro| |
| 抄録 | We performed a retrospective study examining the prevalence and subtypes of pulmonary emphysema (PE) identified by computed tomography (CT) in females. We reviewed the records of 1,687 female subjects who had undergone CT. They were divided into the following 2 age groups:group A (＜50 years) and group B (>_50 years). PE was diagnosed by the presence of low-attenuation areas using visual assessment (grades 0-3) on CT images. Two subtypes of PE were observed:centrilobular emphysema (CLE) and paraseptal emphysema (PSE). PE was divided into the following 3 categories:I (CLE or CLE-predominant);II (CLE and PSE of equal extent);and III (PSE or PSE-predominant). PE was found in 64 of 274 smokers (23.3%) and 54 of 1,413 non-smokers (3.8%). In smoking subjects, when grades 1 and 2 were grouped together as mild PE, the mean age for CT grade 3 (severe PE) was significantly higher than that for mild PE. In group A, category III predominated, whereas category I was more prevalent in group B, in both smoking and non-smoking subjects. A high incidence of PE was found in smoking subjects as compared with non-smoking subjects. PSE predominated in younger subjects, whereas CLE predominated in older subjects. |
| キーワード | cigarette smoking CT pulmonary emphysema females |
| Amo Type | Original Article |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2011-02 |
| 巻 | 65巻 |
| 号 | 1号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 27 |
| 終了ページ | 32 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | CopyrightⒸ 2011 by Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 21339793 |
| Web of Science KeyUT | 000287620500004 |
| JaLCDOI | 10.18926/AMO/43826 |
|---|---|
| フルテキストURL | 65_1_21.pdf |
| 著者 | Tamura, Hiroko| Suzue, Takeshi| Jitsunari, Fumihiko| Hirao, Tomohiro| |
| 抄録 | The aim of this study was to evaluate the carotid arterial intima-media thickness (IMT) and its relation to clinical parameters in Japanese children. Fifty-two healthy children (39 boys and 13 girls), aged 6-14 years, were enrolled in this cross-sectional investigation study. IMT of the common carotid artery was determined using ultrasonography. We also investigated anthropometric parameters, blood pressure (BP), lifestyles and blood examinations. The mean value of IMT was 0.4±0.1mm, which was lower than the normal value (1.0mm) in adults. IMT was positively correlated with age (r＝0.340) and height (r＝0.346) in boys, while it was positively correlated with body mass index (BMI) (r＝0.584) and diastolic BP (DBP) (r＝0.563) in girls. In addition, IMT was associated with sleeping hours and hours of watching television (TV) by using stepwise regression analysis. In conclusion, IMT increased with aging, and it was linked to some clinical parameters of atherosclerosis and lifestyles in children. Therefore, this reference data will be helpful for future assessment of age-related change in Japanese children in clinical practice, and IMT might be a good predictor of atherosclerosis in Japanese children. |
| キーワード | intima-media thickness (IMT) lifestyle Japanese children proportional hazards models atherosclerosis |
| Amo Type | Original Article |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2011-02 |
| 巻 | 65巻 |
| 号 | 1号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 21 |
| 終了ページ | 25 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | CopyrightⒸ 2011 by Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 21339792 |
| Web of Science KeyUT | 000287620500003 |
| JaLCDOI | 10.18926/AMO/43825 |
|---|---|
| フルテキストURL | 65_1_11.pdf |
| 著者 | Kuwaki, Kenji| Nouso, Kazuhiro| Kobayashi, Yoshiyuki| Nakamura, Shinichiro| Ito, Yoichi M.| Iwadou, Shouta| Hagihara, Hiroaki| Yasunaka, Tetsuya| Toshimori, Junichi| Miyatake, Hirokazu| Miyoshi, Kenji| Onishi, Hideki| Miyake, Yasuhiro| Shoji, Bon| Takaki, Akinobu| Shiraha, Hidenori| Iwasaki, Yoshiaki| Kobashi, Haruhiko| Yamamoto, Kazuhide| |
| 抄録 | The purpose of this study was to build a prognostic model of hepatocellular carcinoma (HCC) using time-dependent covariates to re-evaluate the prognosis at any stage of the disease. The subjects were consecutive HCC patients who were treated at our institute between 1995 and 2007. We constructed time-fixed and time-dependent prognostic models with a training group (n＝336) and compared the prognostic abilities between conventional Cancer of the Liver Italian Program (CLIP) scores, Japan Integrated Staging (JIS) scores, an Okuda classification, and our prognostic models in the testing group (n＝227) with the c-index. The time-dependent prognostic model consisted of main tumor size, tumor number, portal vein invasion, distant metastasis, alpha-fetoprotein, des-gamma-carboxy prothrombin (DCP), bilirubin, and albumin and the weighted scores were set for each factor depending on the hazard ratio for the prognosis. The prognostic index was determined by summing the scores. The c-index values for the CLIP scores, JIS scores, Okuda classification, and our time-dependent model were 0.741, 0.727, 0.609, and 0.870, respectively. These results indicate that our time-dependent model can estimate the prognosis of HCC more precisely than traditional time-fixed models and can be used to re-predict the prognosis of HCC. |
| キーワード | hepatocellular carcinoma humans prognosis proportional hazards models time factors |
| Amo Type | Original Article |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2011-02 |
| 巻 | 65巻 |
| 号 | 1号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 11 |
| 終了ページ | 19 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | CopyrightⒸ 2011 by Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 21339791 |
| Web of Science KeyUT | 000287620500002 |
| JaLCDOI | 10.18926/AMO/43824 |
|---|---|
| フルテキストURL | 65_1_1.pdf |
| 著者 | Han, Xiao-Jian| Tomizawa, Kazuhito| Fujimura, Atsushi| Ohmori, Iori| Nishiki, Tei-ichi| Matsushita, Masayuki| Matsui, Hideki| |
| 抄録 | Mitochondria are important cellular organelles in most metabolic processes and have a highly dynamic nature, undergoing frequent fission and fusion. The dynamic balance between fission and fusion plays critical roles in mitochondrial functions. In recent studies, several large GTPases have been identified as key molecular factors in mitochondrial fission and fusion. Moreover, the posttranslational modifications of these large GTPases, including phosphorylation, ubiquitination and SUMOylation, have been shown to be involved in the regulation of mitochondrial dynamics. Neurons are particularly sensitive and vulnerable to any abnormalities in mitochondrial dynamics, due to their large energy demand and long extended processes. Emerging evidences have thus indicated a strong linkage between mitochondria and neurodegenerative diseases, including Alzheimer's disease, Parkinson's disease and Huntington's disease. In this review, we will describe the regulation of mitochondrial dynamics and its role in neurodegenerative diseases. |
| キーワード | mitochondria phosphorylation ubiquitination SUMOylation neurodegeneration |
| Amo Type | Review |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2011-02 |
| 巻 | 65巻 |
| 号 | 1号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 1 |
| 終了ページ | 10 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | CopyrightⒸ 2011 by Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 21339790 |
| Web of Science KeyUT | 000287620500001 |
| JaLCDOI | 10.18926/AMO/41327 |
|---|---|
| フルテキストURL | 64_6_407.pdf |
| 著者 | Ogata, Sho| Horio, Takuya| Sugiura, Yoshiaki| Shimazaki, Hideyuki| Saito, Hiroki| Aiko, Satoshi| Nakanishi, Kuniaki| Kawai, Toshiaki| |
| 抄録 | Sarcoidosis is a systemic granulomatous inflammation of unknown etiology, and seems to involve the liver parenchyma in most cases. However, sarcoidosis-associated hepatocellular carcinoma is rare. We report here a case in which a hepatocellular carcinoma occurred within the liver, which was probably involved as a result of systemic sarcoidosis. A 57-year-old Japanese man had been followed up for 2 years because of diabetic nephropathy and sarcoidosis. On admission for pneumonia, imaging studies revealed an unexpected hepatic tumor. Histology revealed a hepatocellular carcinoma accompanied by T-lymphocytic infiltration and marked granulomatous inflammation, which was surrounding some tumor nodules. The background liver parenchyma exhibited a moderate degree of fibrosis with granulomatous inflammation. The patient had no other apparent liver disease such as viral hepatitis, steatohepatitis, or primary biliary cirrhosis. Therefore, in the present case, sarcoidosis may be considered the probable background etiology for hepatocarcinogenesis. |
| キーワード | granuloma hepatocellular carcinoma lymphocytic infiltration sarcoidosis |
| Amo Type | Case Report |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2010-12 |
| 巻 | 64巻 |
| 号 | 6号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 407 |
| 終了ページ | 410 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 21173811 |
| Web of Science KeyUT | 000285664200008 |
| JaLCDOI | 10.18926/AMO/41326 |
|---|---|
| フルテキストURL | 64_6_399.pdf |
| 著者 | Chang, Chin-Hsien| Chen, Kuo-Ti| Lee, Tsong-Hai| Wang, Chao-Hung| Kuo, Yi-Wen| Chiu, Ya-Huang| Hsieh, Ching-Liang| Wu, Chang-Jer| Chang, Yen-Lin| |
| 抄録 | Vascular endothelial damage has been found to be associated with thrombus formation, which is considered to be a risk factor for cardiovascular disease. A diet of natto leads to a low prevalence of cardiovascular disease. The aim of the present study was to investigate the effects of natto extract on vascular endothelia damage with exposure to laser irradiation. Endothelial damage both in vitro and in vivo was induced by irradiation of rose bengal using a DPSS green laser. Cell viability was determined by MTS assay, and the intimal thickening was verified by a histological approach. The antioxidant content of natto extract was determined for the free radical scavenging activity. Endothelial cells were injured in the presence of rose bengal irradiated in a dose-dependent manner. Natto extract exhibits high levels of antioxidant activity compared with purified natto kinase. Apoptosis of laser-injured endothelial cells was significantly reduced in the presence of natto extract. Both the natto extract and natto kinase suppressed intimal thickening in rats with endothelial injury. The present findings suggest that natto extract suppresses vessel thickening as a synergic effect attributed to its antioxidant and anti-apoptosis properties. |
| キーワード | laser irradiation natto extract thrombolysis thrombosis |
| Amo Type | Original Article |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2010-12 |
| 巻 | 64巻 |
| 号 | 6号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 399 |
| 終了ページ | 406 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 21173810 |
| Web of Science KeyUT | 000285664200007 |
| JaLCDOI | 10.18926/AMO/41325 |
|---|---|
| フルテキストURL | 64_6_391.pdf |
| 著者 | Suezawa, Takanori| Ishino, Kozo| Honjo, Osami| Osaki, Satoru| Kotani, Yasuhiro| Sano, Shunji| |
| 抄録 | We developed a new cardiopulmonary bypass (CPB) method to minimize myocardial damage during aortic arch reconstruction. In this method, coronary flow and heartbeat were stabilized by maintaining the aortic root pressure with an adjusted preload of the ventricle during aortic cross-clamping. This study was performed to determine the appropriate root pressure to maintain the heartbeat without causing deterioration of ventricular function. Study 1. Under partial CPB, the ascending aorta was cross-clamped in 6 pigs (group 1). Experimental data at various systolic aortic root pressures was analysed to determine the appropriate root pressure. Study 2. In group 2 (control, n＝6), the aorta was not clamped, while in group 3 (n＝6), the aorta was cross-clamped for 60 min and the systolic aortic root pressure was maintained at the pressure determined in study 1. Study 1. The diastolic coronary flow was stabilized at values comparable to that before initiation of CPB (6.6±1.4ml/beat) when the systolic aortic root pressure was above 80mmHg. Intracardiac pressure and the myocardial oxygen consumption (MvO2) seemed to be acceptable when the systolic aortic root pressure was below 100mmHg. Therefore, 90mmHg was selected for study 2. Study 2. Perioperative cardiac function did not differ between the groups. We concluded that 90mmHg was the systolic aortic root pressure appropriate for this method. |
| キーワード | aortic cross-clamp coronary flow root pressure cardiopulmonary bypass arch repair |
| Amo Type | Original Article |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2010-12 |
| 巻 | 64巻 |
| 号 | 6号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 391 |
| 終了ページ | 397 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 21173809 |
| Web of Science KeyUT | 000285664200006 |
| JaLCDOI | 10.18926/AMO/41324 |
|---|---|
| フルテキストURL | 64_6_385.pdf |
| 著者 | Miyatake, Nobuyuki| Moriyasu, Hideyuki| Sakano, Noriko| Tada, Shinya| Suzue, Takeshi| Hirao, Tomohiro| |
| 抄録 | The link between changes in estimated glomerular filtration rate (eGFR) and cigarette smoking was evaluated in Japanese male workers with a 5-year follow-up. We examined the data of 456 Japanese male workers, aged 22-70 years, who were taking no medications, and from this group, 286 men (43.5±8.2 years) were followed for 5-years. Habits of cigarette smoking were obtained during interviews by well-trained staff. The influence of cigarette smoking on eGFR was evaluated. In the first analysis, there was no significant difference in eGFR between subjects with and without cigarette smoking. In the second analysis, eGFR was significantly reduced after 5 years in all subjects. Changes in eGFR in subjects with cigarette smoking (－1.90±12.31ml/min/1.73m2) were significantly smaller than those in subjects without cigarette smoking (－4.97±12.05ml/min/1.73m2). At follow-up, we found that eGFR was weakly and negatively correlated with the number of cigarettes smoked (/day). The present study indicated that cigarette smoking may be an important modifiable factor for eGFR in Japanese male workers who are not taking any medications. |
| キーワード | cigarette smoking estimated glomerular filtration rate (eGFR) male worker |
| Amo Type | Original Article |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2010-12 |
| 巻 | 64巻 |
| 号 | 6号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 385 |
| 終了ページ | 390 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 21173808 |
| Web of Science KeyUT | 000285664200005 |
| JaLCDOI | 10.18926/AMO/41323 |
|---|---|
| フルテキストURL | 64_6_375.pdf |
| 著者 | Kariya, Shin| Cureoglu, Sebahattin| Fukushima, Hisaki| Morita, Norimasa| Baylan, Muzeyyen Y.| Maeda, Yukihide| Nishizaki, Kazunori| Paparella, Michael M.| |
| 抄録 | This study examined whether pathological findings were present in cochlear vessels for patients with diabetes mellitus. Twenty-six temporal bones from 13 patients with type 1 diabetes mellitus and 40 temporal bones from 20 patients with type 2 diabetes mellitus were examined. Type 2 diabetic temporal bones were divided into 2 groups according to diabetic management (22 temporal bones with insulin therapy, and 18 with oral hypoglycemic drugs). Age-matched normal control temporal bones were also selected. The vessel wall thickness in the cochlear spiral modiolar artery was measured under a light microscope, and the vessel wall ratio (vessel wall thickness/outer diameter of the vessel×100) was calculated. The vessel wall thickness and vessel wall ratio in type 1 diabetes mellitus were significantly greater than in normal controls. Type 2 diabetic patients with insulin therapy showed significantly greater vessel wall thickness and vessel wall ratios than controls. In type 2 diabetes mellitus, the vessel wall thickness and vessel wall ratio were greater in patients treated with insulin therapy than in those treated with oral hypoglycemic agents. Type 2 diabetic patients with insulin therapy showed an increased vessel wall thickness and vessel wall ratio compared to patients with type 1 diabetes mellitus. In conclusion, the cochlea in patients with diabetes mellitus shows circulatory disturbance compared to age-matched normal controls. |
| キーワード | diabetes mellitus temporal bone cochlear spiral modiolar artery hearing loss |
| Amo Type | Original Article |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2010-12 |
| 巻 | 64巻 |
| 号 | 6号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 375 |
| 終了ページ | 383 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 21173807 |
| Web of Science KeyUT | 000285664200004 |
| JaLCDOI | 10.18926/AMO/41322 |
|---|---|
| フルテキストURL | 64_6_367.pdf |
| 著者 | Tantular, Indah S.| Matsuoka, Hiroyuki| Kasahara, Yuichi| Pusarawati, Suhintam| Kanbe, Toshio| Tuda, Josef S. B.| Kido, Yasutoshi| Dachlan, Yoes P.| Kawamoto, Fumihiko| |
| 抄録 | We conducted a field survey of glucose-6-phosphate dehydrogenese (G6PD) deficiency in the eastern Indonesian islands, and analyzed G6PD variants molecularly. The incidence of G6PD deficiency in 5 ethnic groups (Manggarai, Bajawa, Nage-Keo, Larantuka, and Palue) on the Flores and Palue Islands was lower than that of another native group, Sikka, or a nonnative group, Riung. Molecular analysis of G6PD variants indicated that 19 cases in Sikka had a frequency distribution of G6PD variants similar to those in our previous studies, while 8 cases in Riung had a different frequency distribution of G6PD variants. On the other hand, from field surveys in another 8 ethnic groups (Timorese, Sumbanese, Savunese, Kendari, Buton, Muna, Minahasa, and Sangirese) on the islands of West Timor, Sumba, Sulawesi, Muna and Bangka, a total of 49 deficient cases were detected. Thirty-nine of these 49 cases had G6PD Vanua Lava (383T＞C) of Melanesian origin. In our previous studies, many cases of G6PD Vanua Lava were found on other eastern Indonesian islands. Taken together, these findings may indicate that G6PD Vanua Lava is the most common variant in eastern Indonesian populations, except for Sikka. |
| キーワード | Glucose-6-phosphate dehydrogenase deficiency rapid G6PD test eastern Indonesian population molecular analysis G6PD Vanua Lava |
| Amo Type | Original Article |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2010-12 |
| 巻 | 64巻 |
| 号 | 6号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 367 |
| 終了ページ | 373 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 21173806 |
| Web of Science KeyUT | 000285664200003 |
| JaLCDOI | 10.18926/AMO/41321 |
|---|---|
| フルテキストURL | 64_6_359.pdf |
| 著者 | Yada, Yoshihiko| Sakate, Yoji| Kawamura, Yoshihiro| |
| 抄録 | The results of submucosal electrocoagulation (SEC), a new radical operation for prolapsed hemorrhoids, in 403 patients with third- or fourth-degree hemorrhoids are reported. After resecting the anal skin tags that coexisted with prolapsed hemorrhoids, the hemorrhoidal varices could be resected and electrically coagulated through the wound without cutting the anal canal epithelium by using a fine needle-type electric knife. The results of this series indicated that SEC could dramatically reduce the incidence of the postoperative complications that sometimes occur after conventional hemorrhoid-ectomy, such as severe anal pain, massive anal bleeding and anal stenosis. Moreover, SEC could ensure that operated patients make an early return to social activities and have a satisfactory quality of life. Relapse of prolapsed hemorrhoids after SEC was rare. |
| キーワード | submucosal electrocoagulation method (SEC) hemorrhoids hemorrhoidectomy |
| Amo Type | Original Article |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2010-12 |
| 巻 | 64巻 |
| 号 | 6号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 359 |
| 終了ページ | 365 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 21173805 |
| Web of Science KeyUT | 000285664200002 |