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JaLCDOI 10.18926/AMO/31863
FullText URL fulltext.pdf
Author Yamaguti, Satyu|
Abstract

Lecithodendriidae Odhner, 1910 1. Phaneropsolus simiae n. sp. Heterophyidae Odhner, 1914 2. Galactosomum canis n. sp. Paramphistomidae Fischoeder, 1901 3. Explanatum explanatum (Creplin, 1857) 4. Paramphistomum cervi (Schrank, 1790) 5. Calicophoron cauliorchis (Stiles et Goldberger, 1900) 6. Ceylonocotyle εcoliocoelium (Fischoeder, 1901) 7. Fischoederius elongatus (Poirier, 1883) Fasciolidae Railliet, 1895 8. Fasciola hepatica Linne, 1758

Amo Type Article
Publication Title Acta Medicinae Okayama
Published Date 1954-03
Volume volume8
Issue issue4
Publisher Okayama University Medical School
Start Page 341
End Page 353
NCID AA00041342
Content Type Journal Article
language English
File Version publisher
Refereed True
NAID 120002313182
JaLCDOI 10.18926/AMO/31862
FullText URL fulltext.pdf
Author Yamaguti, Satyu|
Abstract

Echinorhynchidae Cobbold, 1879 1. Acanthocephalus bufonis (Shipley, 1903) Rhadinorhynchidae Travassos, 1923 2. Rhadinorhynchus celebesensis n. sp. 3. Filisoma indicum van Cleave, 1928 Quadrigyridae van Cleave, 1920 4. Pallisentis gaboes (MacCallum, 1918) van Cleave. 1928 Gigantorhynchidae Hamann, 1892 5. Empodius sp. Neoechinorhynchidae Hamann, 1892 6. Neoechinorhynchus longilemniscus n. sp.

Amo Type Article
Publication Title Acta Medicinae Okayama
Published Date 1954-03
Volume volume8
Issue issue4
Publisher Okayama University Medical School
Start Page 406
End Page 414
NCID AA00041342
Content Type Journal Article
language English
File Version publisher
Refereed True
NAID 120002312811
JaLCDOI 10.18926/AMO/31861
FullText URL fulltext.pdf
Author Yamaguti, Satyu|
Abstract

I. Trematodes of mammals 1. Brachylaemus tokudai n. sp. 2. Acanthatrium ovatum Yamaguti, 1939 II. Cestodes of frogs 3. Baerietta montana n. sp. 4. Baerietta claviformis n. sp. III. Cestodes of· birds 5. Choanotaenia barbara Meggitt, 1926 IV. Cestodes of mammals 6. Hymenolepis apodemi n. sp.

Amo Type Article
Publication Title Acta Medicinae Okayama
Published Date 1954-03
Volume volume8
Issue issue4
Publisher Okayama University Medical School
Start Page 393
End Page 408
NCID AA00041342
Content Type Journal Article
language English
File Version publisher
Refereed True
NAID 120002312967
JaLCDOI 10.18926/AMO/31860
FullText URL fulltext.pdf
Author Kaihara, Masanobu| Nakamura, Yoshio| Sugimoto, Taro| Uchida, Haruhito A.| Norii, Hisanao| Hanayama, Yoshihisa| Makino, Hirofumi|
Abstract

We investigated the impact of olmesartan and temocapril on pancreatic islet beta-cells during the development of diabetes mellitus using Otsuka-Long-Evans-Tokushima Fatty (OLETF) rats. Four-week-old male OLETF rats were fed standard chow (untreated:n5), or chow containing either 0.005% olmesartan(n5) or 0.01% temocapril (n5) until being sacrificed at 35 weeks of age. Pancreas sections were double-stained with anti-insulin and anti-glucagon antibodies. The percent areas of beta-cells, alpha-cells and non-alpha-non-beta-cells were compared among groups. In untreated OLETF rats, the fasting plasma glucose (FPG) level was elevated at the 18th week and remained elevated until the 35th week. On the other hand, no significant elevation in FPG levels was observed in olmesartan- or temocapril-treated rats. Pancreatic islets from olmesartan-treated rats were significantly smaller in size as compared with those from untreated OLETF rats. Furthermore, the average area occupied by beta-cells as a fraction of the total area of an individual islet was significantly higher in olmesartan- or temocapril-treated rats than that in untreated OLETF rats. Olmesartan and temocapril both prevented the development of hyperglycemia, possibly through the prevention of islet beta-cell loss in spontaneously diabetic OLETF rats.

Keywords angiotensin II type-1 receptor blocker angiotensin converting enzyme inhibitor pancreas insulin secretion Type 2 diabetes mellitus
Amo Type Original Article
Publication Title Acta Medica Okayama
Published Date 2009-02
Volume volume63
Issue issue1
Publisher Okayama University Medical School
Start Page 35
End Page 42
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
File Version publisher
Refereed True
PubMed ID 19247421
Web of Science KeyUT 000263730300005
JaLCDOI 10.18926/AMO/31859
FullText URL fulltext.pdf
Author Takaki-Doi, Shima| Hashimoto, Ken| Yamamura, Michio| Kamei, Chiaki|
Abstract

Angiotensin I-converting enzyme (ACE) inhibitory and hypotensive effects of 7 peptide fractions (Frs) of royal jelly protein hydrolysate (RJPH) were studied in comparison with those of RJPH alone. Fr 4 and Fr 5 were the highest in ACE inhibitory activity and yield, respectively. Molecular weights (MWs) of RJPH and Fr 1-Fr 7 were distributed from 100 to 5,000 and those of Fr 1-Fr 7 increased in order from Fr 1 to Fr 7. RJPH, Fr 3 and Fr 4 at doses of 10, 30 and 100mg/kg i.v. and Fr 5 and Fr 6 at doses of 30 and 100mg/kg i.v. caused transiently significant hypotensive effects in spontaneously hypertensive rats (SHR). Fr 3, Fr 4, Fr 5 and Fr 6 at a dose of 1,000mg/kg also caused significant hypotensive effects 3h, 4-5h, 7-8h and 8h after oral administration in SHR, respectively. RJPH caused a long-lasting hypotensive effect in proportion to the magnitude of the MWs of RJPH fractions. The hypotensive pattern of RJPH was similar to the combined pattern of Fr 3-Fr 6. From these results, it can be concluded that the long-lasting hypotensive effect of oral administration of RJPH is dependent on the MWs of its ACE inhibitory peptides and the time required to digest them.

Keywords royal jelly peptide ACE inhibitory activity hypotensive effect spontaneously hypertensive rat
Amo Type Original Article
Publication Title Acta Medica Okayama
Published Date 2009-02
Volume volume63
Issue issue1
Publisher Okayama University Medical School
Start Page 57
End Page 64
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
File Version publisher
Refereed True
PubMed ID 19247423
Web of Science KeyUT 000263730300008
JaLCDOI 10.18926/AMO/31858
FullText URL fulltext.pdf
Author Ogawa, Tomoyuki| Ono, Shigeki| Ichikawa, Tomotsugu| Arimitsu, Seiji| Onoda, Keisuke| Tokunaga, Koji| Sugiu, Kenji| Tomizawa, Kazuhito| Matsui, Hideki| Date, Isao|
Abstract

Many studies have shown that a motif of 11 consecutive arginines (11R) is one of the most effective protein transduction domains (PTD) for introducing proteins into the cell membrane. By conjugating this "11R", all sorts of proteins can effectively and harmlessly be transferred into any kind of cell. We therefore examined the transduction efficiency of 11R in cerebral arteries and obtained results showing that 11R fused enhanced green fluorescent protein (11R-EGFP) immediately and effectively penetrated all layers of the rat basilar artery (BA), especially the tunica media. This method provides a revolutionary approach to cerebral arteries and ours is the first study to demonstrate the successful transductionof a PTD fused protein into the cerebral arteries. In this review, we present an outline of our studies and other key studies related to cerebral vasospasm and 11R, problems to be overcome, and predictions regarding future use of the 11R protein transduction method for cerebral vasospasm (CV).

Keywords cerebral vasospasm 11 consecutive arginines (11R) enhanced green fluorescent protein (EGFP)
Amo Type Review
Publication Title Acta Medica Okayama
Published Date 2009-02
Volume volume63
Issue issue1
Publisher Okayama University Medical School
Start Page 1
End Page 7
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
File Version publisher
Refereed True
PubMed ID 19247417
Web of Science KeyUT 000263730300001
JaLCDOI 10.18926/AMO/31857
FullText URL fulltext.pdf
Author Iwasaki, Jun| Kono, Kunihisa| Katayama, Yusuke| Takahashi, Natsuki| Takeuchi, Kazufumi| Tanakaya, Machiko| Osawa, Kazuhiro| Shiraki, Teruo| Saito, Daiji|
Abstract

There is little information available concerning the influence of right bundle branch block (RBBB) on the prognosis of patients with inferior myocardial infarction (MI). In this study we evaluated the influence of RBBB on the short-term prognosis of patients with inferior MI. Our study subjects were 1,265 hospitalized patients with Q wave MI. Patients were divided into 4 groups based on the presence or absence of RBBB and on the location of the infarction. RBBB was classified into 4 categories according to the timing of its appearance and its duration as new permanent, transient, old and age indeterminate. In-hospital death and pulmonary congestion were observed more frequently in patients with RBBB than in those without RBBB. Moreover, in inferior MI as in anterior MI, in-hospital death and pulmonary congestion occurred more frequently in new permanent RBBB patients than in patients with other types of RBBB. Multivariate regression analysis reveals that new permanent RBBB was a strong independent predictor for an adverse short-term prognosis in patients with inferior MI, as well as in patients with anterior MI. New permanent RBBB during inferior MI is a strong independent predictor for increased in-hospital mortality, regardless of the infarction location.

Keywords right bundle branch block inferior infarction in-hospital death new permanent RBBB
Amo Type Original Article
Publication Title Acta Medica Okayama
Published Date 2009-02
Volume volume63
Issue issue1
Publisher Okayama University Medical School
Start Page 25
End Page 33
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
File Version publisher
Refereed True
PubMed ID 19247420
Web of Science KeyUT 000263730300004
JaLCDOI 10.18926/AMO/31856
FullText URL fulltext.pdf
Author Ohtsu, Tadahiro| Kaneita, Yoshitaka| Ohida, Takashi| Osaki, Yoneatsu| Kanda, Hideyuki| Tamaki, Tetsuo| Shirasawa, Takako| Haseba, Yahiro| Kokaze, Akatsuki| Hayashi, Kenji|
Abstract

In this study we investigated the attitudes of Japanese medical students toward being informed of a diagnosis of life-threatening illness. Fourth-year medical students from 20 randomly sampled universities were administered questionnaires that examined their opinion about whether they would welcome disclosure of medical information if they were diagnosed as having an ultimately fatal disease. Data from 1,619 students (male 1,074, female 545, effective collection rate 90.6%) were analyzed. With regard to attitudes about disclosure of a diagnosis of life-threatening illness, 87.7% of the students stated that they would wish to be informed even if there was little chance of recovery, and 11.6% expressed a wish to be informed of their condition only if there was a chance of recovery. Students who did not wish to be informed even if there was a chance of recovery accounted for 0.7% of those surveyed. Our study reveals that medical students are more positive than are members of the general population with regard to being informed of the truth. The proportion of those who wished to be informed even if there was little chance of recovery was higher among students from national and public universities than among those from private universities, and the inter-group difference was statistically significant. Among male students, answers to the survey were significantly correlated with 12-item General Health Questionnaire scores and mental health status, suggesting that mental health status may have affected how this study population viewed being informed of their diagnosis.

Keywords medical students life-threatening illness medical condition disclosure 12-item General Health Questionnaire (GHQ-12)
Amo Type Original Article
Publication Title Acta Medica Okayama
Published Date 2009-02
Volume volume63
Issue issue1
Publisher Okayama University Medical School
Start Page 19
End Page 24
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
File Version publisher
Refereed True
PubMed ID 19247419
Web of Science KeyUT 000263730300003
JaLCDOI 10.18926/AMO/31855
FullText URL fulltext.pdf
Author Nishibori, Masahiro| Takahashi, Hide K.| Katayama, Hiroshi| Mori, Shuji| Saito, Shinya| Iwagaki, Hiromi| Tanaka, Noriaki| Morita, Kiyoshi| Ohtsuka, Aiji|
Abstract Lipopolysaccharide (LPS) is one of the major causes of septic shock. The polymyxin B-immobilized filter column (PMX) was developed for the adsorption of endotoxin by direct hemoperfusion and has been used for the treatment of LPS-induced septic shock. In this study, we demonstrated that PMX also specifically bound monocytes from the peripheral blood leukocytes of septic patients by mean of an analysis of bound cells using immunocytochemical and electron microscopic techniques. The specific removal of monocytes from septic patients may produce beneficial effects by reducing the interaction between monocytes and functionally associated cells including vascular endothelial cells.
Keywords septic shock polymixin B-immobilized column monocyte adsorptive removal
Amo Type Short Communication
Publication Title Acta Medica Okayama
Published Date 2009-02
Volume volume63
Issue issue1
Publisher Okayama University Medical School
Start Page 65
End Page 69
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
File Version publisher
Refereed True
Web of Science KeyUT 000263730300009
JaLCDOI 10.18926/AMO/31854
FullText URL fulltext.pdf
Author Oishi, Junko| Doi, Hiroyuki| Kawakami, Norito|
Abstract

A cross-sectional study was conducted to evaluate the association between dietary intake and depressivesymptoms in community-dwelling elderly persons. Five-hundred elderly persons aged 65 to 75 years were randomly selected from the population of O city in Okayama Prefecture, Japan. Among 401 respondents (response rate, 80.0%), data from 279 (133 males, 146 females) who completed the questionnaire concerning dietary intake and depressive state were analyzed using logistic regression. Each of 17 dietary intakes was classified into tertiles:high intake, moderate intake, and low intake. The Center for Epidemiology Studies Depression scale (CES-D) was used. Among males, the observed odds ratios (the 95% confidence intervals) for the depressive state were 0.36 (95% CI:0.13-0.98) in the highest tertile of carotene intake, 0.33 (95% CI:0.12-0.93) in the highest tertile of vitamin C intake, 0.29 (95% CI:0.10-0.85) in the highest tertile of carbohydrate intake, and 0.33 (95% CI:0.12-0.92) in the medium tertile of vitamin E intake. Among females, similar results were observed, but these results were not statistically significant. The results suggested that carbohydrate, carotene, and vitaminC intakes are associated with lowering depressive symptoms among elderly persons dwelling in communities in Japan.

Keywords dietary intake depressive symptoms elderly persons cross-sectional study gender
Amo Type Original Article
Publication Title Acta Medica Okayama
Published Date 2009-02
Volume volume63
Issue issue1
Publisher Okayama University Medical School
Start Page 9
End Page 17
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
File Version publisher
Refereed True
PubMed ID 19247418
Web of Science KeyUT 000263730300002
JaLCDOI 10.18926/AMO/31853
FullText URL fulltext.pdf
Author Komatsu, Hirokazu| Yorifuji, Takashi| Iwase, Toshihide| Sasaki, Ayako| Takao, Soshi| Doi, Hiroyuki|
Abstract

To investigate the effect of exclusive breastfeeding on the likelihood of Japanese preschool children being overweight, population-based cross-sectional survey data from M town in Japan were used. Using the population registry of this town, all 616 preschool children were identified, and a self-administered questionnaire was sent to their parents. The exposure variable of interest was exclusive breastfeeding from birth to 6 months, and the outcome variable of interest was the children being overweight at preschool age. Statistical analyses used included logistic regression and sensitivity analyses. In the final analyses, we included 448 preschool children. Although all point estimates indicated a protective effect, logistic regression analyses showed no significant reduction in being overweight due to exclusive breastfeeding in the unadjusted model (odds ratio (OR)0.70, 95% confidence intervals:0.30-1.64), the model adjusted for birth weight (OR0.70, 95% CI:0.30-1.63), the model adjusted for child lifestyle (OR0.71, 95% CI:0.30-1.67), or the model adjusted for parental factors (OR0.46, 95% CI:0.15-1.37). In sensitivity analyses, point estimates were not significant, but a protective effect was observed. In conclusion, our results suggest that breastfeeding might have a protective effect on Japanese preschool children against being overweight, although statistical significance was not observed due to the limitation of the statistical power of the findings.

Keywords breastfeeding overweight preschool children
Amo Type Original Article
Publication Title Acta Medica Okayama
Published Date 2009-02
Volume volume63
Issue issue1
Publisher Okayama University Medical School
Start Page 49
End Page 55
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
File Version publisher
Refereed True
PubMed ID 19247416
Web of Science KeyUT 000263730300007
JaLCDOI 10.18926/AMO/31852
FullText URL fulltext.pdf
Author Nohara, Takahiko| Terao, Hideo| Tobe, Kazuo| Musashi, Manabu| Nagao, Keiichi|
Abstract

Chest X-ray (CXR) examination is considered essential for health checkups of students;thus, it is important to objectively assess the CXR for a better understanding of the appropriate X-ray exposure dose, and the risks such an examination entails. Accordingly, we performed a multi-institutional study regarding students' CXR exposure, during a 6year-period from 2002 (partially including 2001) to 2007, with the collaboration of national, municipal, and private universities and colleges in Japan. A glass badge was worn by the students at the time of CXR screening examination. These glass badges were collected, and their X-ray exposure doses were measured. The results indicated a tendency of decreasing exposure dose over the 6 years, though the difference was not significant. In a comparison of the chest X-ray systems within institutions (own X-ray equipmentinside systems) with those outside the institution (mobile X-ray equipmentoutside systems), the average exposure dose with the outside systems exceeded that of the inside systems. Both inside and outside systems included a few X-ray machines with which the exposure was more than 1mSv. Based on these facts, individuals in charge of student health checkups should be aware of the exposure dose of each chest fluorographic system at their institution.

Keywords health checkup for student fluorography examination X-ray exposure dose risk and benefit institution?s equipment
Amo Type Original Article
Publication Title Acta Medica Okayama
Published Date 2009-02
Volume volume63
Issue issue1
Publisher Okayama University Medical School
Start Page 43
End Page 47
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
File Version publisher
Refereed True
PubMed ID 19247422
Web of Science KeyUT 000263730300006
JaLCDOI 10.18926/AMO/31851
FullText URL fulltext.pdf
Author Miyatake, Nobuyuki| Saito, Takeshi| Miyachi, Motohiko| Tabata, Izumi| Numata, Takeyuki|
Abstract

The aim of this study was to explore muscle strength and its relation to exercise habits in Japanese. We used data from 3,018 men and 6,881 women aged 20-69 years and not using medications in a cross-sectional study. Exercise habits and muscle strength, i.e. grip strength and leg strength, were measured. Age-related changes in muscle strength were noted. Exercise habits were found in 984 men (32.6%) and 1,664 women (24.2%). For subjects of both sexes over 50 years, grip strength was significantly decreased with age. However, the ratio of leg strength to body weight significantly decreased with age as early as 30 years in men and 40 years in women. Grip strength, leg strength and the ratio of leg strength to body weight in subjects with exercise habits were significantly higher than those without exercise habits after adjusting for age in both sexes. This standard mean value may provide a useful database for evaluating muscle strength in Japanese adult subjects.

Keywords exercise habits grip strength leg strength
Amo Type Original Article
Publication Title Acta Medica Okayama
Published Date 2009-06
Volume volume63
Issue issue3
Publisher Okayama University Medical School
Start Page 151
End Page 155
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
File Version publisher
Refereed True
PubMed ID 19571902
Web of Science KeyUT 000267388200005
JaLCDOI 10.18926/AMO/31850
FullText URL fulltext.pdf
Author Ohmori, Takao| Endo, Hirosuke| Mitani, Shigeru| Minagawa, Hiroshi| Tetsunaga, Tomonori| Ozaki, Toshifumi|
Abstract

In 1957, Pavlik introduced the Pavlik harness as a useful treatment for developmental dislocation of the hip (DDH), and subsequent studies have documented favorable outcomes among patients treated with this device. However, there are only a few articles reporting how early radiographic measurements can be used to determine the prognosis after treatment with the Pavlik harness. In this study, 217 hips from 192 patients whose DDH treatment with the Pavlik harness was initiated before they were 6 months old and whose follow-up lasted at least 14 years (rate, 63.8%) were analyzed using measurements from radiographs taken immediately before and after harness treatment, and at 1, 2, and 3 years of age. Severin's classification at the final follow-up was I or II in 71.9% and III or IV in 28.1% of the hips, respectively. Avascular necrosis of the femoral head (AVN) was seen in 10% of the hips. Stepwise multiple regression analysis was performed to retrospectively determine whether any radiographic factors were related to the final classification as Severin I/II or III/IV. Receiver opera-ting characteristic (ROC) curves were drawn for these factors, and a Wiberg OE angle (Point O was the middle point of the proximal metaphyseal border of the femur) of 2 degrees on the 3-year radiographs was found to be the most useful screening value for judging the acetabular development of DDH cases after treatment with a Pavlik harness, with a sensitivity of 71% a specificity of 93%, and a likelihood ratio of 10.1.

Keywords developmental dislocation of the hip long-term follow up radiographic measurement stepwise multiple regression analysis acetabular development
Amo Type Original Article
Publication Title Acta Medica Okayama
Published Date 2009-06
Volume volume63
Issue issue3
Publisher Okayama University Medical School
Start Page 123
End Page 128
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
File Version publisher
Refereed True
PubMed ID 19571898
Web of Science KeyUT 000267388200001
JaLCDOI 10.18926/AMO/31849
FullText URL fulltext.pdf
Author Tanaka, Masato| Nakahara, Shinnosuke| Ito, Yasuo| Kunisada, Toshiyuki| Misawa, Haruo| Koshimune, Koichiro| Ozaki, Toshifumi|
Abstract

Surgical treatment of metastatic spinal cord compression is controversial. The purpose of this study was to investigate the effectiveness of our current surgical treatments and the use of spinal instrumentation. In this retrospective study covering the years between 1990 and 2006, 100 patients with spinal metastases which were secondary to various cancers underwent posterior and/or anterior decompression with spinal stabilization for the purposes of reduction of pain, and/or to help correct or improve neurological deficits. The group was made up of 60 men and 40 women whose ages ranged from 16 to 83 years (average of 60 years), and the average follow-up period was 14 months. The effect of treatment upon pain relief and neural deficits was assessed, and the cumulative survival rate was calculated by the Kaplan-Meier method. The average surgical time was 185min. This was calculated based on the following times, listed here with the surgery type:178min for posterior surgery;245min for anterior surgery;465 min for combined surgery;and 475min for total en bloc spondylectomy. Average blood loss during surgery was 1,630 ml for posterior surgery, 1,760 ml for anterior surgery, 1,930 ml for combined surgery, and 3,640 ml for total en bloc spondylectomy. Preoperative pain and paralysis were improved by 88% and 53%, respectively. In regards to surgical complications, postoperative epidural hematoma was observed in 2 patients, and instrumentation-related infection was observed in 1. Only 2 patients died within 2 months of surgery. In conclusion, posterior and/or anterior decompression with spinal stabilization is a safe and effective treatment for patients with spinal metastases, and can improve their quality of life.

Keywords spinal metastasis spinal surgery instrumentation
Amo Type Original Article
Publication Title Acta Medica Okayama
Published Date 2009-06
Volume volume63
Issue issue3
Publisher Okayama University Medical School
Start Page 145
End Page 150
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
File Version publisher
Refereed True
PubMed ID 19571901
Web of Science KeyUT 000267388200004
JaLCDOI 10.18926/AMO/31848
FullText URL fulltext.pdf
Author Iishi, Tatsuhiko| Hiraki, Takao| Mimura, Hidefumi| Gobara, Hideo| Kurose, Taichi| Fujiwara, Hiroyasu| Sakurai, Jun| Yanai, Hiroyuki| Yoshino, Tadashi| Kanazawa, Susumu|
Abstract

The present study was performed to clarify the effect of hypertonic saline infusion into the lung parenchyma on radiofrequency ablation (RFA) of the lungs. A total of 20 ablation zones were created in 3 pigs. The ablation zones were divided into 3 groups. Group 1 (n6) consisted of ablation zones created by applying smaller radiofrequency (RF) power without saline infusion;group 2 (n5) zones were created by applying greater RF power without saline infusion;and group 3 (n9) zones were created by applying greater RF power with saline infusion. The techniques of saline infusion included administration of hypertonic saline 1ml before RFA, followed by continuous administration at a rate of 1ml/min during the first 2min after the initiation of RFA. The ablation parameters and coagulation necrosis volumes were compared among the groups. Group 3 had a tendency toward smaller mean impedance than group 1 (p0.059) and group 2 (p0.053). Group 3 showed significantly longer RF application time than group 2 (p0.004) and significantly greater maximum RF power than group 1 (p0.001) and group 2 (p0.004). Group 3 showed significantly larger coagulation necrosis volume (mean, 1,421mm3) than group 2 (mean, 858mm3, p0.039) and had a tendency toward larger necrosis volume than group 1 (mean, 878mm3, p0.077). Although this small study had limited statistical power, hypertonic saline infusion during RFA appeared to enlarge coagulation necrosis of the lung parenchyma.

Keywords radiofrequency ablation lung experimental study
Amo Type Original Article
Publication Title Acta Medica Okayama
Published Date 2009-06
Volume volume63
Issue issue3
Publisher Okayama University Medical School
Start Page 137
End Page 144
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
File Version publisher
Refereed True
PubMed ID 19571900
Web of Science KeyUT 000267388200003
JaLCDOI 10.18926/AMO/31847
FullText URL fulltext.pdf
Author Kobuke, Makoto| Saika, Takashi| Nakanishi, Yoshiko| Ebara, Shin| Manabe, Daisuke| Uesugi, Tatsuya| Nose, Hiroyuki| Arata, Ryoji| Tsushima, Tomoyasu| Nasu, Yasutomo| Kumon, Hiromi|
Abstract

To determine health-related quality of life (HRQOL) after radical retropubic prostatectomy (RRP) or permanent prostate brachytherapy (BT), third party-conducted QOL surveys were prospectively compared. Between 2004 and 2005, 37 patients underwent RRP and 36 were treated with BT. A QOL survey consisting of the Medical Outcomes Study 36-Item Short Form (SF-36), the University of California, Los Angeles, Prostate Cancer Index (UCLA-PCI) and the International Prostate Symptoms Score (IPSS) was completed prospectively by a research coordinator at baseline, and at 1, 3, 6 and 12 months after treatment. The RRP patients scored well in general QOL except at 1 month after surgery, with their mental health better than at baseline by 6 months after surgery. Disease-specific QOL in RRP patients received a low score at 1 month for both urinary and sexual function, though urinary function rapidly recovered to baseline levels. BT patient QOL was not affected by the therapy except in the IPSS score. However, general and mental health scores in BT patients were inferior to those in RRP patients. This prospective study revealed differences in QOL after RRP and BT. These results will be helpful in making treatment decisions.

Keywords prostate cancer radical prostatectomy QOL brachytherapy
Amo Type Original Article
Publication Title Acta Medica Okayama
Published Date 2009-06
Volume volume63
Issue issue3
Publisher Okayama University Medical School
Start Page 129
End Page 135
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
File Version publisher
Refereed True
PubMed ID 19571899
Web of Science KeyUT 000267388200002
JaLCDOI 10.18926/AMO/31846
FullText URL fulltext.pdf
Author Totsugawa, Toshinori| Kuinose, Masahiko| Ishida, Atsuhisa| Tamaki, Takahiko| Yoshitaka, Hidenori| Tsushima, Yoshimasa|
Abstract

Spontaneous dissection of the superior mesenteric artery (SMA) is a rare condition. Here we report 2 cases of spontaneous SMA dissection causing acute abdomen. Bowel infarction did not occur in either case despite total occlusion or severe stenosis of the SMA;we successfully managed isolated SMA dissection without surgical intervention. Our nonoperative management regimen for spontaneous SMA dissection consisted of intestinal rest with fasting, administration of a vasodilator, and blood pressure control. Surgical intervention should be unnecessary unless complications, such as intestinal infarction and abdominal angina, occur.

Keywords acute abdomen spontaneous dissection superior mesenteric artery nonoperative management
Amo Type Case Report
Publication Title Acta Medica Okayama
Published Date 2009-06
Volume volume63
Issue issue3
Publisher Okayama University Medical School
Start Page 157
End Page 160
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
File Version publisher
Refereed True
PubMed ID 19571903
Web of Science KeyUT 000267388200006
JaLCDOI 10.18926/AMO/31845
FullText URL fulltext.pdf
Author Wake, Hidenori| Mori, Shuji| Liu, Keyue| Takahashi, Hideo K.| Nishibori, Masahiro|
Abstract

Angiogenesis involves complex processes mediated by several factors and is associated with inflammation and wound healing. High mobility group box 1 (HMGB1) is released from necrotic cells as well as macrophages and plays proinflammatory roles. In the present study, we examined whether HMGB1 would exhibit angiogenic activity in a matrigel plug assay in mice. HMGB1 in combination with heparin strongly induced angiogenesis, whereas neither HMGB1 nor heparin alone showed such angiogenic activity. The heparin-dependent induction of angiogenesis by HMGB1 was accompanied by increases in the expression of tumor necrosis factor-alpha (TNF-alpha) and vascular endothelial growth factor-A120 (VEGF-A120). It is likely that the dependence of the angiogenic activity of HMGB1 on heparin was due to the efficiency of the diffusion of the HMGB1-heparin complex from matrigel to the surrounding areas. VEGF-A165 possessing a heparin-binding domain showed a pattern of heparin-dependent angiogenic activity similar to that of HMGB1. The presence of heparin also inhibited the degradation of HMGB1 by plasmin in vitro. Taken together, these results suggested that HMGB1 in complex with heparin possesses remarkable angiogenic activity, probably through the induction of TNF-alpha and VEGF-A120.

Keywords angiogenesis HMGB1 heparin
Amo Type Original Article
Publication Title Acta Medica Okayama
Published Date 2009-10
Volume volume63
Issue issue5
Publisher Okayama University Medical School
Start Page 249
End Page 262
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
File Version publisher
Refereed True
PubMed ID 19893601
Web of Science KeyUT 000271132000005
JaLCDOI 10.18926/AMO/31844
FullText URL fulltext.pdf
Author Ohtsu, Tadahiro| Kokaze, Akatsuki| Shimada, Naoki| Kaneita, Yoshitaka| Shirasawa, Takako| Ochiai, Hirotaka| Ohida, Takashi|
Abstract

The structural deficits and problems associated with application of the International Statistical Classification of Diseases and Related Health Problems, Tenth Revision (ICD-10) were investigated. For this purpose, mortality statistics in Japan were examined for bias in the proportions of death causes classified using the ICD-10 four-character subcategory system, particularly the large distribution of cases classified under the .9 (unspecified) codes. The results showed that most deaths due to the 3 major causes were coded into the .9 subcategories. For example, 97.6% of the 607,065 deaths between 1995 and 2007 classified as I21 (acute myocardial infarction) were coded as I21.9 (acute myocardial infarction, unspecified). This suggests that the quality of the data recorded on many death certificates is poor. Thus, to ensure that the fourth-digit-level subcategories of the ICD-10 code system are effectively used to represent mortality data and actual causes of death in Japan, future studies should address the following objectives:(1) to minimize the discrepancy between the ICD classification terms and the names of diseases actually used in clinical practice, and (2) to actively raise awareness among physicians about the need to accurately record death causes on death certificates, since these records form the basis for determining mortality statistics in Japan.

Keywords ICD-10 four-character subcategories death certificate mortality statistics
Amo Type Original Article
Publication Title Acta Medica Okayama
Published Date 2009-10
Volume volume63
Issue issue5
Publisher Okayama University Medical School
Start Page 281
End Page 286
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
File Version publisher
Refereed True
PubMed ID 19893604
Web of Science KeyUT 000271132000008