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Age - Related Male Osteoporosis, and Soy, Its Alternative Therapy
Do Yu Soung,Hae Young Chung,Sook Hee Rhee,Kun-Young Park 한국식품영양과학회 2005 Preventive Nutrition and Food Science Vol.10 No.3
As the population of the elderly grows, the prevalence of osteoporosis and its related fractures will increase in both men and women. The etiology, preventive and curative strategies of male osteoporosis are relatively unknown and understudied in comparison with those of female osteoporosis. Even currently approved therapies, e.g. bisphophonates, parathyroid hormone, and testosterone for male osteoporosis are in need of further investigation to test their safety and efficacy. Isoflavones which are found in soy have been shown to positively affect bone by stimulating bone formation while concurrently slowing down bone resorption. These observations mainly come from studies that have employed women or female animal models of osteoporosis. Therefore, there is a need to explore the role of soy and its isoflavones in preventing bone loss or rebuilding bone utilizing men or animal models of male osteoporosis. From the review of existing literature it is too early to state the extent to which men with osteoporosis can benefit from consumption of soy or its isoflavones. In this review, the efficacy of soy and its isoflavones as alternative and/or adjunctive treatment for male osteoporosis will be discussed.
Flavonoids and chlorogenic acid from Eriobotrya japonica scavenge peroxynitrite
Do Yu Soung,Jin Sook Kim,Hae Young Chung,Hyun Ah Jung,Jong Cheol Park,Jae Sue Choi 한국생약학회 1999 Natural Product Sciences Vol.5 No.2
Peroxynitrite is a cytotoxic intermediate produced by the reaction between the superoxide anion radical and nitric oxide. Flavonoids (afzelin, quercitrin and quercetin 3-O-sambubioside), and chlorogenic acid and its methyl ester obtained from leaves of loquat (Eriobotrya japonica) have recently been shown to scavenge 1,1-diphenyl-2-picrylhydrazyl radical and to inhibit lipid peroxidation in mouse liver homogenate. The aim of this study is to investigate the inhibitory effects of the above components on peroxynitrite produced stimulated by 3-morpholinosydnonimine (SIN-1) to produce superoxide anion radical and nitric oxide at the same time. In addition, the present study tests whether or not the components directly scavenge peroxynitrite itself. The results showed that the components with the aromatic ortho-dihydroxyl groups (catechol) were more potent inhibitors of peroxynitrite formation by SIN-1. In particular, the methyl ester form of chlorogenic acid showed the most potent inhibition. At 5 μM concentration, the order of minimizing peroxynitrite formation were : methyl chlorogenic acid $gt; quercitrin $gt; quercetin 3-O-sambubioside $gt; chlorogenic acid $gt; afzelin. Authentic peroxynitrite was directly scavenged by the components in a manner similar to peroxynitrite formation by SIN-1. In particular, when compared with penicillamine as a positive control, methyl chlorogenate was as effective in inhibiting peroxynitrite formation and approximately 2 times more effective in scavenging an authentic peroxynitrite. These results demonstrate therefore, that components extracted from the leaves of Eriobotrya japonica effectively scavenged peroxynitrite.
Age-Related Male Osteoporosis, and Soy, Its Alternative Therapy - Review-
Soung, Do-Yu,Chung, Hae-Young,Rhee, Sook-Hee,Park, Kun-Young The Korean Society of Food Science and Nutrition 2005 Preventive Nutrition and Food Science Vol.10 No.3
As the population of the elderly grows, the prevalence of osteoporosis and its related fractures will increase in both men and women. The etiology, preventive and curative strategies of male osteoporosis are relatively unknown and understudied in comparison with those of female osteoporosis. Even currently approved therapies, e.g. bisphophonates, parathyroid hormone, and testosterone for male osteoporosis are in need of further investigation to test their safety and efficacy. Isoflavones which are found in soy have been shown to positively affect bone by stimulating bone formation while concurrently slowing down bone resorption. These observations mainly come from studies that have employed women or female animal models of osteoporosis. Therefore, there is a need to explore the role of soy and its isoflavones in preventing bone loss or rebuilding bone utilizing men or animal models of .male osteoporosis. From the review of existing literature it is too early to state the extent to which men with osteoporosis can benefit from consumption of soy or its isoflavones. In this review, the efficacy of soy and its isoflavones as alternative and/or adjunctive treatment for male osteoporosis will be discussed.
신종범,Jung Hwan Yu,Young-Joo Jin,Hyung Joon Yim,Young Kul Jung,Jin Mo Yang,Do Seon Song,Young Seok Kim,Sang Gyune Kim,김동준,석기태,Eileen L. Yoon,Sang Soo Lee,Chang-Wook Kim,Hee Yeon Kim,Jae Young Jang,Soung 대한간학회 2020 Clinical and Molecular Hepatology(대한간학회지) Vol.26 No.4
Background/Aims: This study examined the risk factors associated with mortality in cirrhotic patients hospitalized with variceal bleeding, and evaluated the effects of acute-on-chronic liver failure (ACLF) on the prognosis of these patients. Methods: This study was retrospectively conducted on patients registered in the Korean acute-on-chronic liver failure study cohort, and on 474 consecutive cirrhotic patients hospitalized with variceal bleeding from January 2013 to December 2013 at 21 university hospitals. ACLF was defined as described by the European Association for the Study of Liver-Chronic Liver Failure Consortium. Results: Among a total of 474 patients, 61 patients were diagnosed with ACLF. The cumulative overall survival (OS) rate was lower in the patients with ACLF than in those without (P<0.001), and patients with higher ACLF grades had a lower OS rate (P<0.001). The chronic liver failure-sequential organ failure assessment (CLIF-SOFA) score was identified as a significant prognostic factor in patients hospitalized with variceal bleeding (hazard ratio [HR], 1.40; 95% confidence interval [CI], 1.30–1.50; P<0.001), even in ACLF patients with variceal bleeding (HR, 1.32; 95% CI, 1.19–1.46, P<0.001). Concerning the prediction of the mortality risk at 28- and 90-day using CLIF-SOFA scores, c-statistics were 0.895 (95% CI, 0.829–0.962) and 0.897 (95% CI, 0.842–0.951), respectively, and the optimal cut-off values were 6.5 and 6.5, respectively. Conclusions: In cirrhotic patients hospitalized with variceal bleeding, the prognosis was poor when accompanied by ACLF, especially depending upon CLIF-SOFA score. CLIF-SOFA model well predicted the 28-day or 90-day mortality for cirrhotic patients who experienced variceal bleeding.
( Sang Yong Eom ),( Sun In Moon ),( Dong Hyuk Yim ),( Chul Ho Lee ),( Guen Bae Kim ),( Yong Dae Kim ),( Jong Won Kang ),( Kang Hyeon Choe ),( Sung Jin Kim ),( Byung Sun Choi ),( Seung Do Yu ),( Soung 대한결핵 및 호흡기학회 2012 Tuberculosis and Respiratory Diseases Vol.72 No.3
Background: Korean regression models for spirometric reference values are different from those of Americans. Using spirometry results of Korean adults, goodness-of-fits of the Korean and the USA Caucasian regression models for forced vital capacity (FVC) and forced expiratory volume in one second (FEV1) were compared. Methods: The number of study participants was 2,360 (1,124 males and 1,236 females). Spirometry was performed under the guidelines of the American Thoracic Society and the European Respiratory Society. After excluding unsuitable participants, spirometric data for 729 individuals (105 males and 624 females) was included in the statistical analysis. The estimated FVC and FEV1 values were compared with those measured. Goodness-of-fits for Korean and USA Caucasian models were compared using an F-test. Results: In males, the expected values of FVC and FEV1 using the Korean model were 12.5% and 5.7% greater than those measured, respectively. The corresponding values for the USA Caucasian model were 3.5% and 0.6%. In females, the difference in FVC and FEV1 were 13.5% and 7.7% for the Korean model, and 6.3% and 0.4% for the USA model, respectively. Goodness-of-fit for the Korean model regarding FVC was not good to the study population, but the Korean regression model for FEV1, and the USA Caucasian models for FVC and FEV1 showed good fits to the measured data. Conclusion: These results suggest that the USA Caucasian model correlates better to the measured data than the Korean model. Using reference values derived from the Korean model can lead to an overestimation regarding the prevalence of abnormal lung function.
Eom, Sang-Yong,Moon, Sun-In,Yim, Dong-Hyuk,Lee, Chul-Ho,Kim, Guen-Bae,Kim, Yong-Dae,Kang, Jong-Won,Choe, Kang-Hyeon,Kim, Sung-Jin,Choi, Byung-Sun,Yu, Seung-Do,Chang, Soung-Hoon,Park, Jung-Duck,Kim, He The Korean Academy of Tuberculosis and Respiratory 2012 Tuberculosis and Respiratory Diseases Vol.72 No.3
Background: Korean regression models for spirometric reference values are different from those of Americans. Using spirometry results of Korean adults, goodness-of-fits of the Korean and the USA Caucasian regression models for forced vital capacity (FVC) and forced expiratory volume in one second ($FEV_1$) were compared. Methods: The number of study participants was 2,360 (1,124 males and 1,236 females). Spirometry was performed under the guidelines of the American Thoracic Society and the European Respiratory Society. After excluding unsuitable participants, spirometric data for 729 individuals (105 males and 624 females) was included in the statistical analysis. The estimated FVC and $FEV_1$ values were compared with those measured. Goodness-of-fits for Korean and USA Caucasian models were compared using an F-test. Results: In males, the expected values of FVC and $FEV_1$ using the Korean model were 12.5% and 5.7% greater than those measured, respectively. The corresponding values for the USA Caucasian model were 3.5% and 0.6%. In females, the difference in FVC and $FEV_1$ were 13.5% and 7.7% for the Korean model, and 6.3% and 0.4% for the USA model, respectively. Goodness-of-fit for the Korean model regarding FVC was not good to the study population, but the Korean regression model for $FEV_1$, and the USA Caucasian models for FVC and $FEV_1$ showed good fits to the measured data. Conclusion: These results suggest that the USA Caucasian model correlates better to the measured data than the Korean model. Using reference values derived from the Korean model can lead to an overestimation regarding the prevalence of abnormal lung function.