1.Enriched n-3 polyunsaturated fatty acids of dense LDL subfraction in Japanese women with small, dense LDL categorized by non-denaturing gradient gel electrophoresis
Akiko Nogi ; Limei Li ; Jianjun Yang ; Masayuki Yamasaki ; Mamiko Watanabe ; Kuninori Shiwaku
Journal of Rural Medicine 2006;2(1):18-35
;Small, dense low density lipoprotein (LDL) has been suggested to be highly atherogenic as a result of their low-binding affinity to LDL receptors, their prolonged plasma half-life and low resistance to oxidative stress. Although marine n-3 polyunsaturated fatty acids (PUFAs) have beneficial effects for the prevention of cardiovascular diseases, there is little information on detailed fatty acid composition in LDL particles. In the present study, LDL subfractions were isolated from the plasma of 45 clinically healthy Japanese women by density gradient ultracentrifugation using a light fraction of 1.025-1.034 g/ml (LDL-I), an intermediate fraction of 1.034-1.044 g/ml (LDL-II), and a dense fraction of 1.044-1.060 g/ml (LDL-III). A clear relationship between the frequency of fish intake and increases in plasma n-3 PUFAs was apparent. Although plasma n-3 PUFAs in women with small-sized LDL using non-denaturing gradient gel electrophoresis (GGE) did not show a significant difference, n-3 PUFAs and n-3 PUFAs/n-6 PUFAs in dense LDL-III subfraction increased in the small-sized LDL group using GGE, compared to those with buoyant LDL particles. The result of enriched n-3 PUFAs in dense LDL subfraction suggests that n-3 PUFAs may help prevent atherosclerosis in the arteries of Japanese women with small-sized LDL.
Low density lipoprotein cholesterol measurement
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Lower case en
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Human Females
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Japanese language
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Plasma
2.Influence of rice with different amylose contents on postprandial glycemic response
Masayuki Yamasaki ; Mamiko Watanabe ; Toshimi Yoneyama ; Akiko Nogi ; Li Wang ; Kuninori Shiwaku
Journal of Rural Medicine 2006;2(1):51-58
Objective: Clinical studies suggest that maintaining a lower postprandial glycemic response is important for improvement and prevention of metabolic syndrome and type 2 diabetes mellitus. Amylose, an ingredient in many food grains, is a major factor for the lowering of postprandial glycemic and insulinemic response. The aim of the present study was to determine the influence of rice with different level of amylose on postprandial glycemic and insulinemic response in mice and humans.Materials and Methods: The two types of rice used in the study contained 29 wt% (high amylose rice) or 17 wt% (low amylose rice) amylose. In mice and humans, postprandial glycemic and insulinemic responses were measured and then the area under the response curves of both rice groups were compared.Results: In mice, comparisons of postprandial glycemic response showed high amylose rice was lower than that for low amylose rice in all time points. Notably postprandial glycemic responses for high amylose rice at 15, 30, 45 and 60 min were significantly lower (19%, 31%, 16% and 17% respectively). The area under the glycemic response curve for high amylose rice was a remarkably 16% less than for the low amylose rice. In humans, postprandial glycemic response at 30 min and insulinemic response at 60 min for high amylose rice were significantly lower than for low amylose rice (15% and 40% lower, respectively). Furthermore, general linear measurement multivariate analysis after adjustment for eating time and hemoglobin A1c at baseline showed that postprandial glycemic response at 30 and 60 min and insulinemic response at 60 min, and the area under the glycemic response curve for high amylose rice were significantly lower than for low amylose rice in human.Conclusion: The higher amylose content of the rice lowered the postprandial glycemic and insulinemic response, demonstrating the potential to prevent or improve metabolic syndrome and type 2 diabetes mellitus.
Rice
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Minute of time
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Laboratory mice
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Syndrome
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Diabetes Mellitus, Non-Insulin-Dependent
3.Dietary Antioxidants for Prevention of Cardiovascular Disease
Takuya Katsube ; Mamiko Watanabe ; Masayuki Yamasaki ; Keiko Kitajima ; Yosuke Yamane ; Kuninori Shiwaku
Journal of Rural Medicine 2005;1(1):4-14
The traditional Japanese diet with its high intake of fruits and vegetables that are rich in antioxidants is believed to effectively ward off cardiovascular disease. Oxidative stress, related to reactive oxygen and nitrogen species produced by aerobic organisms, is responsible for the pathogenesis of most chronic diseases. Oxidative low density lipoprotein (LDL) is thought to play a key role in the pathogenesis of early atherosclerosis. There has been increasing interest in antioxidant substances derived from edible plants. It has been suggested that the measurement of LDL antioxidant activity is physiopathologically more important and informative for screening antioxidant activity to prevent atherosclerosis than other methods. We assessed by LDL oxidation assay the antioxidant characteristics of various edible plants from rural areas. The mulberry (Morus alba L.) leaf showed comparatively high antioxidant activity. We identified the antioxidant compounds and investigated compound levels in the mulberry leaf and found the antioxidant activity of mulberry leaves to be mainly attributable to quercetin 3-(6-malonylglucoside) (Q3MG). Dietary consumption of mulberry leaves and/or Q3MG may enhance resistance to oxidative modification of LDL and attenuated atherosclerotic lesion development. However, the outcome of intervention trials suggested that a single antioxidant had little effect on the risk of developing cardiovascular disease. The synergic effect of certain combinations may determine outcome. We need to widen our understanding of the synergic effect of diets and nutrient-gene interactions related to nutrient/disease risk.
Antioxidants
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seconds
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Low density lipoprotein cholesterol measurement
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Pathogenesis
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Oxidative Dietary Supplements
4.The results of the regional palliative care support center activities :practice of the palliative care from early stage, palliative care education and regional cooperation promotion
Aya Kimura ; Michiko Kuroda ; Hiroshi Kawamura ; Yoshinori Watanabe ; Satomi Yamada ; Tomoko Shigeno ; Megumi Kokubun ; Miki Ogasawara ; Mamiko Yoshida ; Saori Aoki ; Ryo Toya ; Toshihide Nadaoka ; Yoshiko Kato
Palliative Care Research 2014;9(3):901-906
Introduction: The regional palliative care support center (PCSC) has set the following palliative care goals for correction of misunderstanding and prejudice of the general community against palliative care, home care and home death of cancer patients: practice palliative care early after diagnosis, educate the community to understand palliative care and build a regional palliative care cooperation system. Method: This study reviewed four years (2009-2012) of data from the PCSC. Outcome data of the patients were collected during outpatient care, inpatient care, and in-home care that were supported by the PCSC. The PCSC managed palliative care based on patient conditions and symptoms in the early stage after diagnosis. The PCSC worked to spread the idea and importance of palliative care to the general community and health care professionals of the region, and also worked to promote the regional palliative care cooperation. Result: These efforts led to an increase in the number of first center visit of patients, especially introduction patients, and an extension of the period of treatments of both tumor department and palliative care department. These outcomes resulted in an increase in the rate of in-home care transitions, the length of in-home care and the number of deaths at home. These results suggest that the place of appropriate medical and caregiving treatments and the place of death are converting into home gradually from hospital.
5.Usefulness of Gd-EOB-DTPA-enhanced MRI for evaluating the potential for early development of hepatocellular carcinoma after HCV eradication by direct-acting antiviral treatment
Naoki MORIMOTO ; Kouichi MIURA ; Shunji WATANABE ; Mamiko TSUKUI ; Yoshinari TAKAOKA ; Hiroaki NOMOTO ; Kozue MURAYAMA ; Takuya HIROSAWA ; Rie GOKA ; Naoki KUNITOMO ; Hiroyasu NAKAMURA ; Hideharu SUGIMOTO ; Norio ISODA ; Hironori YAMAMOTO
Journal of Rural Medicine 2019;14(1):78-86
Objective: The development of hepatocellular carcinoma (HCC) is not uncommon in patients who achieve eradication of the hepatitis C virus through direct-acting antiviral (DAA) treatment. The aim of this study was to identify the patients at high risk for novel HCC development after a sustained virologic response (SVR) by DAA treatment.Patients and Methods: A total of 518 patients with no history of HCC treatment and who achieved SVR by DAA treatment were evaluated retrospectively. The correlations between HCC development and the patients’ characteristics were evaluated. For patients who underwent gadolinium-ethoxybenzyl-diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance imaging (MRI) or dynamic contrast-enhanced computed tomography, the relationship between the imaging findings and subsequent HCC development was also assessed.Results: HCC developed newly in 22 patients, and the 1-year and 3-year cumulative HCC rates were 2.0% and 8.5%, respectively. In multivariate analysis, a FIB-4 index >4.0 and a post-treatment α-fetoprotein >4.0 ng/ml were significant risk factors for HCC. In 26 of 118 patients who underwent an MRI before DAA treatment, a non-hypervascular hypo-intense nodule was seen in the hepatobiliary phase, and in 6 of 182 patients who underwent a CT, a non-hypervascular hypo-enhanced nodule was seen in the delayed phase. The sensitivity and specificity of the MRI-positive findings for the subsequent development of HCC were 0.92 and 0.87, respectively, and those of the CT were 0.40 and 0.99, respectively. In multivariate analysis of patients who underwent an MRI, a non-hypervascular hypo-intense nodule was the only factor that was significantly related to HCC development (HR 32.4, p = 0.001).Conclusion: Gd-EOB-DTPA-enhanced MRI was found to be reliable for risk evaluation of subsequent HCC development in patients after SVR by DAA treatment. Patients with a non-hypervascular hypo-intense nodule need more careful observation for incident HCC.
6.Efficacy and safety of glecaprevir and pibrentasvir combination therapy in old-aged patients with chronic hepatitis C virus infection
Shunji WATANABE ; Naoki MORIMOTO ; Kouichi MIURA ; Toshimitsu MUROHISA ; Toshiyuki TAHARA ; Takashi SATO ; Shigeo TANO ; Yukimura FUKAYA ; Hidekazu KURATA ; Yukishige OKAMURA ; Norikatsu NUMAO ; Keita UEHARA ; Kozue MURAYAMA ; Katsuyuki NAKAZAWA ; Hitoshi SUGAYA ; Hiroaki YOSHIZUMI ; Makoto IIJIMA ; Mamiko TSUKUI ; Takuya HIROSAWA ; Yoshinari TAKAOKA ; Hiroaki NOMOTO ; Hiroshi MAEDA ; Rie GOKA ; Norio ISODA ; Hironori YAMAMOTO
Journal of Rural Medicine 2020;15(4):139-145
Objective: Combination therapy with glecaprevir and pibrentasvir (G/P) has been shown to provide a sustained virologic response (SVR) rate of >97% in patients with chronic hepatitis C virus (HCV) infection in the first published real-world Japanese data. However, a recently published study showed that the treatment was often discontinued in patients ≥75 years old, resulting in low SVR in intention-to-treat (ITT) analysis. Thus, our aim was to evaluate real-world data for G/P therapy in patients ≥75 years of age, the population density of which is high in “rural” regions.Patients and Methods: We conducted a multicenter study to assess the efficacy and safety of G/P therapy for chronic HCV infection, in the North Kanto area in Japan.Results: Of the 308 patients enrolled, 294 (95.5%) completed the treatment according to the protocol. In ITT and per-protocol analyses, the overall SVR12 rate was 97.1% and 99.7%, respectively. The old-aged patients group consisted of 59 participants, 56 of whom (94.9%) completed the scheduled protocol. Although old-aged patients tended to have non-SVR factors such as liver cirrhosis, history of HCC, and prior DAA therapies, the SVR12 rates in old-aged patients were 98.3% and 100% in the ITT and PP analyses, respectively. Of 308 patients enrolled, adverse events were observed in 74 patients (24.0%), with grade ≥3 events in 8 patients (2.6%). There was no significant difference in any grade and grade ≥3 adverse events between the old-aged group and the rest of the study participants. Only one patient discontinued the treatment because of adverse events.Conclusion: G/P therapy is effective and safe for old-aged patients.