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The bulletin of the Yamaguchi Medical School Volume 52 Issue 3-4 pp. 55 - 60
published_at 2005-12
The purpose of this study was to compare demographic trends in the aging of the Japanese and Brazilian populations on the basis of health indicator data collected by the statistics bureaus of the Japanese and Brazilian governments. The demographic and health indicator data from surveys by the Statistics Bureaus of the Japanese and Brazilian governments and other sources were obtained from websites. The data showed that Japan has an aging population, that the number of elderly persons in Japan is increasing and that the Government of Japan has a plan to address future demands for health resources by this aging population, whereas Brazil has a rapidly population aging but no plan for its future health services. Brazil may need to increase the number of hospitals and hospital beds and develop a medical care plan for the elderly within its Unified Health System.
Creators : Sendo Eliane Satie | Inoue Masaiwa | Laskar MS | Harada Noriaki Publishers : Yamaguchi University School of Medicine Updated At : 2022-07-29 12:27:13
The bulletin of the Yamaguchi Medical School Volume 52 Issue 3-4 pp. 43 - 53
published_at 2005-12
Histopathological and immunohistochemical studies were conducted to investigate the local existence and distribution of mast cells, fibroblasts or dendritic cells, and myofibroblasts in scleroderma, while paying particular attention to the interstices around the adnexa. The skin tissues in 15 cases of systemic scleroderma were classified histopathologically into three stages: early, fully developed, and late stage. Mesenchymal cells were distinguished immunohistochemically by 6 markers: tryptase, CD34, factor XIIIa, alpha smooth muscle actin (αSMA), vimentin, and desmin. In scleroderma, there was an increase in the number of tryptase-positive mast cells in the interstices around the adnexa. With no relation to the interstitial sites, there was a significant decrease in the number of CD34-positive cells in the late stage, and a significant increase in αSMA-positive cells in the fully developed stage, but a decrease in the late stage. Results of the present study brought about the following new findings: it was only in the mast cells that there was a significant difference in the cell distribution between the interstices around the adnexa and the interstices in non-adnexal sites. Secondly, it was suggested that mast cells, CD34-positive dendritic cells, and αSMA-positive myofibroblasts were involved in the fibrosis and shrinkage or disappearance of the adnexa when scleroderma developed.
Creators : Yokoyama Emi Publishers : Yamaguchi University School of Medicine Updated At : 2022-07-28 10:55:18
The bulletin of the Yamaguchi Medical School Volume 52 Issue 3-4 pp. 37 - 41
published_at 2005-12
Hepatocellular carcinoma (HCC) has a poor prognosis even after curative surgery, due to the high frequency of early intrahepatic recurrence (IHR). Conventional staging systems are almost completely inadequate, and need to be complemented by novel tools. To this end, many investigators have performed DNA microarray analysis on the basis of genome-wide information. However, so far, few studies have been able to truly account for the clinical efficacy of DNA microarray analysis in HCC. To address this dilemma, we used a supervised learning method with information of 7070 genes from 33 HCC samples, to construct a 12-gene predictor for early IHR, and then evaluated its predictive performance in 27 independent HCC samples. Our 12-gene predictor correctly predicted early IHR or non-recurrence in 25 (93%) of the 27 independent samples. This predictive value is higher than that of any other system currently available, suggesting that our system can serve as a robust tool for accurate prediction of early IHR of HCC. I emphasize in this mini-review that, although there are some technical issues to resolve prior to clinical use, DNA microarray technology can provide molecular basis to initiate “bench to bedside” translation, which cannot be easily reached with other methods.
Creators : Iizuka Norio Publishers : Yamaguchi University School of Medicine Updated At : 2022-07-28 10:40:21
The bulletin of the Yamaguchi Medical School Volume 52 Issue 3-4 pp. 33 - 35
published_at 2005-12
Creators : Shinohara Kenji Publishers : Yamaguchi University School of Medicine Updated At : 2022-07-28 10:27:02
The bulletin of the Yamaguchi Medical School Volume 52 Issue 3-4 pp. 25 - 31
published_at 2005-12
Application of cell therapy using stem cell into intractable diseases has been noted as the medicine in the next generation taking the place of organ transplantation. Bone marrow cells have been focused as a candidate of the source of this therapy. Liver failure is a terminal state of all advanced liver diseases and thousands of patients are dying of decompensated liver cirrhosis in every year in Japan. Liver transplantation must be the strongest weapon to relieve those patients. However, particularly in Japan, liver transplantation has not been popularized. In this sense, we thought of autologous bone marrow cells transplantation for decompensated liver cirrhosis. Basic studies using animal model revealed that transplanted bone marrow cells into syngenic mouse suffering from liver cirrhosis migrated into the damaged liver and transdifferentiated to the hepatocytes. Based upon the animal studies, clinical trial of this new cell therapy supported by the Ministry of Health, Labor and Welfare is ongoing. It is early to estimate this therapy. However, free from liver failure has been observed in some cases.
Creators : Okita Kiwamu | Sakaida Isao | Terai Shuji | Yamamoto Naoki | Omori Kaoru | Ishikawa Tsuyoshi | Aoyama Kouji | Shinoda Koh | Hamamoto Yoshihiko Publishers : Yamaguchi University School of Medicine Updated At : 2022-07-27 15:07:50
The bulletin of the Yamaguchi Medical School Volume 61 Issue 1-2 pp. 7 - 13
published_at 2014
Background and Aim: Image definition and complete small bowel examination rate are possible factors contributing to missed lesions during capsule endoscopy.This study aimed to determine the effect of coadministration of polyethylene glycol (PEG) and dai-kenchu-to (DKT) on these factors using PEG and DKT as pretreatment before capsule endoscopy. Methods: Patients who underwent capsule endoscopy at our hospital between November 2007 and August 2012 were included in the study. Patients were divided into the following three groups: those receiving no pretreatment (control, n=133), those orally administered PEG (PEG, n=20), and those orally administered PEG and DKT (15g) (PEG + DKT, n=25). Image definition and complete small bowel examination rate were examined retrospectively between the three groups. Results: Image definition in the PEG + DKT group was significantly higher than that in the control group (p<0.05), but there was no significant differences between the PEG and control groups. The complete small bowel examination rate was significantly lower in the PEG group than in the control and PEG + DKT groups (p<0.05). Conclusions: Coadministration of PEG and DKT improved image definition and prevented a reduction of the complete small bowel examination rate due to PEG in capsule endoscopy.
Creators : Suzuki Keiko | Hashimoto Shinichi | Shirasawa Tomohiro | Yokota Tadayuki | Kaneyama Satoko | Shibata Hiroaki | Tanabe Ryo | Sakaida Isao Publishers : Yamaguchi University School of Medicine Updated At : 2015-07-24 20:38:05
Journal of Statistical Mechanics: Theory and Experiment Volume 2016 pp. 023206 -
published_at 2016-02-25
We study the diffusion of Brownian particles in a Gaussian random velocity field with short memory. By extending the derivation of an effective Fokker–Planck equation for the Lanvegin equation with weakly colored noise to a random velocity-field problem, we find that the effect of thermal noise on particles is suppressed by the existence of memory. We also find that the renormalization effect for the relative diffusion of two particles is stronger than that for single-particle diffusion. The results are compared with those of molecular dynamics simulations.
Creators : Ueda Masahiko Publishers : IOP Publishing Updated At : 2022-06-02 15:05:55
Algorithms Volume 15 Issue 6 pp. 192 -
published_at 2022-06-02
The quadratic unconstrained binary optimization (QUBO) problem is categorized as an NP-hard combinatorial optimization problem. The variable neighborhood search (VNS) algorithm is one of the leading algorithms used to solve QUBO problems. As neighborhood structure change is the central concept in the VNS algorithm, the design of the neighborhood structure is crucial. This paper presents a modified VNS algorithm called "B-VNS", which can be used to solve QUBO problems. A binomial trial was used to construct the neighborhood structure, and this was used with the aim of reducing computation time. The B-VNS and VNS algorithms were tested on standard QUBO problems from Glover and Beasley, on standard max-cut problems from Helmberg-Rendl, and on those proposed by Burer, Monteiro, and Zhang. Finally, Mann-Whitney tests were conducted using α = 0.05, to statistically compare the performance of the two algorithms. It was shown that the B-VNS and VNS algorithms are able to provide good solutions, but the B-VNS algorithm runs substantially faster. Furthermore, the B-VNS algorithm performed the best in all of the max-cut problems, regardless of problem size, and it performed the best in QUBO problems, with sizes less than 500. The results suggest that the use of binomial distribution, to construct the neighborhood structure, has the potential for further development.
Creators : Pambudi Dhidhi | Kawamura Masaki Publishers : Multidisciplinary Digital Publishing Institute Updated At : 2022-06-13 10:46:59
Journal of the Physical Society of Japan Volume 91 Issue 8 pp. 084801 -
published_at 2022-07-11
Zero-determinant strategies are a class of memory-one strategies in repeated games which unilaterally enforce linear relationships between payoffs. It has long been unclear for what stage games zero-determinant strategies exist. We provide a necessary and sufficient condition for the existence of zero-determinant strategies. This condition can be interpreted as the existence of two different actions which unilaterally adjust the total value of a linear combination of payoffs. A relation between the class of stage games where zero-determinant strategies exist and other class of stage games is also provided.
Creators : Ueda Masahiko Publishers : Physical Society of Japan Updated At : 2022-07-19 16:50:23
published_at 2012-02-20
Creators : Kobayashi Hiroshi Publishers : 風響社 Updated At : 2022-05-12 15:10:30
published_at 2019-03-20
Creators : Kobayashi Hiroshi Publishers : 風響社 Updated At : 2022-03-30 09:42:46
published_at 2020
Creators : 伊藤 悦子 Updated At : 2020-04-21 23:20:55
Bulletin of Clinical Psychology Service Center, Graduate School of Education, Yamaguchi University Volume 12 pp. 27 - 36
published_at 2021
本研究の目的は,文献をもとに「育児困難感」と「育児不安」の用語の整理を行い,今後の支援に繋げる視点を得ることである。検討の結果,「育児困難感」は,実際の母親を取り巻く要因の中で,母親が子どもと対峙することで「母親自身が困っている」状態を示すものと考えられた。また「育児不安」は「育児における漠然とした不安」であり,疲労感や抑うつ状態が生じる可能性や,具体的な対象や問題がない場合でも生じることが考えられた。また「育児困難感」は「相手(子ども)への感情」であり,「育児不安」は「母親自身の不安」であり,2つは質的に異なると考えられ,「育児困難感」と「育児不安」の高低をもとに,5つのタイプに分類を試みた。
Creators : Kasuga Yumi Publishers : 山口大学大学院教育学研究科附属臨床心理センター Updated At : 2022-07-15 14:44:25
Bulletin of Clinical Psychology Service Center, Graduate School of Education, Yamaguchi University Volume 12
published_at 2021
Creators : 浅田 千馬 Publishers : 山口大学大学院教育学研究科附属臨床心理センター Updated At : 2022-07-15 14:47:36
Bulletin of Clinical Psychology Service Center, Graduate School of Education, Yamaguchi University Volume 12 pp. 3 - 14
published_at 2021
本研究は質問紙調査により挫折体験の意味づけとフォーカシング的経験および外傷後成長(Post-Traumatic Growth,以下“PTG”と表記)との関連を検討するものである。パス解析の結果,(1)フォーカシング的経験のうち「体験過程の受容と行動」はPTGを促進すること,(2)挫折体験の意味づけのうち「同化」はフォーカシング的経験の「間が取れている」と「体験過程の確認時間・空間の確保」,「体験過程の受容と行動」を促進し「体験の感受」を抑制すること,また(3)挫折体験の意味づけのうち「調節」は「体験の感受」と「体験過程の受容と行動」を促進すること,(4)人は挫折体験を経験した際,「同化」と「調節」の両方を体験しがちであることが示された。以上より「同化と調節の振り子モデル」が提示され,調節のみならず同化も有機体の実現傾向のあらわれとして位置づけうること,また一見進んでいないようにみえるクライエントのプロセスを受容することが,結果としてプロセスを進めることにつながるうることが示唆された。
Creators : Oshie Takashi Publishers : 山口大学大学院教育学研究科附属臨床心理センター Updated At : 2022-07-15 10:57:45
Bulletin of Clinical Psychology Service Center, Graduate School of Education, Yamaguchi University Volume 8.9.10.11
published_at 2020
Creators : Tsuneyoshi Tetsuzo Publishers : 山口大学大学院教育学研究科附属臨床心理センター Updated At : 2022-07-14 15:21:31
Bulletin of Clinical Psychology Service Center, Graduate School of Education, Yamaguchi University Volume 8.9.10.11 pp. 41 - 51
published_at 2020
本研究の目的は,教員の教育相談研修への参加意欲を高める要因について検討することである。筆者が行った教育相談の継続研修の参加者14名を対象に,研修に継続参加した理由について自由記述による質問紙調査を行った。検討の結果,研修参加の要因として「ニーズや実践とつながる研究内容」「自分を見つめる・他者と共有し受け止められる時間」は「ニーズや実践とつながる研究内容」や「研究方法・環境の工夫」の両方の側面を持つと考えた。
Creators : Kasuga Yumi Publishers : 山口大学大学院教育学研究科附属臨床心理センター Updated At : 2022-07-14 15:12:52
Bulletin of Clinical Psychology Service Center, Graduate School of Education, Yamaguchi University Volume 8.9.10.11 pp. 33 - 40
published_at 2020
本研究は挫折体験により知覚されたストレスとフォーカシング的態度および自己成長感との関連を検討するものである。パス解析の結果,(1)挫折体験により知覚されたストレスは問題意識性を高め,フォーカシング的態度による吟味のプロセスを経て自己成長感を高めること,(2)挫折体験により知覚されたストレスはフォーカシング的態度を抑制することが示された。あわせて本研究の結果が臨床に示唆する意義について議論した。
Creators : Oshie Takashi Publishers : 山口大学大学院教育学研究科附属臨床心理センター Updated At : 2022-07-14 15:10:06
Bulletin of Clinical Psychology Service Center, Graduate School of Education, Yamaguchi University Volume 8.9.10.11
published_at 2020
Creators : 貞弘 洋子 | Tanabe Toshiaki | 山下 健一 Publishers : 山口大学大学院教育学研究科附属臨床心理センター Updated At : 2022-07-14 13:29:43
Bulletin of Clinical Psychology Service Center, Graduate School of Education, Yamaguchi University Volume 8.9.10.11
published_at 2020
Creators : 井上 拓也 | Tanabe Toshiaki Publishers : 山口大学大学院教育学研究科附属臨床心理センター Updated At : 2022-07-14 13:22:45
Bulletin of Clinical Psychology Service Center, Graduate School of Education, Yamaguchi University Volume 8.9.10.11
published_at 2020
Creators : Tsuneyoshi Tetsuzo Publishers : 山口大学大学院教育学研究科附属臨床心理センター Updated At : 2022-07-14 13:13:32
published_at 2022-04
背景:経食道心エコー図検査(TEE)は、心房細動(AF)に対する肺静脈隔離術(PVI)前の左心房(LA)および左心耳(LAA)における血栓の有無の評価を行うゴールドスタンダードな検査である。TEEは比較的安全とされているが、近年PVIに先行するTEEが食道粘膜損傷(EMI)を引き起こす可能性があることが報告された。 目的:PVIを施行したAF患者におけるTEE関連EMIの発生率とその危険因子を検討すること。 方法と結果:3D TEEプローブを用いた術前TEEと術後上部消化管内視鏡検査を受けたPVI患者262人を対象とした。TEE関連EMIは16人(6.1%)の患者(18病変)、PVI関連EMIは5人(1.9%)の患者(8病変)で認められた。TEE関連EMIは上部食道の右側と中部食道の左前側で多く認められた。1人の患者で軽度の胸部違和感を認めた。多変量解析では、高齢はTEE関連EMIの独立した危険因子であった(オッズ比1.08、95%信頼区間1.01-1.16;P=0.0274)。 結語:3D TEEプローブによるTEE関連EMIは、PVI施行患者の6.1%で認められ、高齢であることはTEE関連EMIの危険因子であった。これらの所見から、特に高齢患者においては、LA・LAAにおける血栓評価として他の画像診断を考慮する必要があるかもしれない。
Creators : 小室 あゆみ Updated At : 2022-07-07 15:32:56
published_at 2022-01
近年、遺伝子改変T細胞を用いた養子免疫療法の臨床応用が進められているが、未だ治療成績は満足のいくものではなく、更なる治療の進歩が求められている。我々はこれまで、自律性にIL7とCCL19を発現するCAR-T細胞(7×19 CAT-R細胞)が優れた抗腫瘍活性を発揮することを示した。本研究ではIL7及びCCL19がTCR-T細胞の抗腫瘍活性を増強させる可能性を検証するため、腫瘍抗原であるP1Aを特異的に認識するTCR-T細胞(P1A-T細胞)にIL7及びCCL19を分泌させる遺伝子改変を加えた7×19 P1A-T細胞を作製した。P1Aを有する細胞株であるP815を皮下接種したマウスに対する養子免疫療法において、7×19 P1A細胞はIL7及びCCL19を分泌しないP1A-T細胞(Conv. P1A-T細胞)と比較し優れた抗腫瘍効果を示した。腫瘍拒絶マウスにおいては、Conv. P1A-T細胞を使用したマウスと比較し優れた免疫記憶が形成されていた。また抗PD-1抗体を用いた複合免疫療法を行うことで、7×19 P1A-T細胞の有する抗腫瘍効果は更に増強された。CRISPR/ Cas9システムを用いPdcd1をknockdownした7×19 P1A-T細胞は対照7×19 P1A-T細胞と比較し強い抗腫瘍効果を示したが、抗PD-1抗体を併用することで更なる抗腫瘍効果の増強を認めたことから、7×19 P1A-T細胞の発揮する抗腫瘍効果には7×19 P1A-T細胞そのものばかりでなくマウス内在性のT細胞が関与していることが分かった。また、7×19 P1A-T細胞においても抗PD-1抗体との併用により抗腫瘍効果が増強することを確認した。本研究における検証により、7×19 TCR-T細胞及び7×19 CAR-T細胞を用いた免疫療法が抗悪性腫瘍療法の発展に寄与できる可能性が示された。
Creators : 德永 良洋 Updated At : 2022-07-07 09:13:25
The bulletin of the Yamaguchi Medical School Volume 45 Issue 1-4 pp. 19 - 27
published_at 1998-12
Creators : Shirasawa Bungo Updated At : 2006-03-07 09:00:00