The effects of protein-bound polysaccharides (A-PBP and L-PBP) that were extracted from the mycelia of two edible mushrooms, namely Agaricus blazai and Lentinus edodes, on serum cholesterol and body weight were investigated in mice and female volunteers. Six groups of Male Balb/c mice were fed six kinds of diet supplement- solutions composed of L-PBP, A-PBP, chitosan, and other fiber constituents, for 30 days under the normal diet. Ninety female volunteers were also supplemented for 8 weeks with six kinds of capsules including control and five test groups as the same manners (two times a day, 4 capsules). From 12 days after feeding of L-PBP (Group I) and A-PBP (Group II), the weight of mice began to reduce as compared with control, whereas that of Group III fed chitosan was decreased 15 days after feeding. Group W and Group V which were fed mixture of L-PBP, A-PBP, chitosan, and other dietary fiber, were more significant in lowering weight. After 4 weeks of the supplementation in women, their serum LDL-cholesterol level and body weights in Group I and II were reduced, but Croup 111 taken with chitosan capsule showed weaker effect than Group I and II. After 8 weeks, LDL-cholesterol content in the sera of Group I (132.5 mg/dL) and II(131.5 mg/dL) was decreased to ideal level (125.4 and 122.8 mg/dL) for healthy blood vessel. In the case of Group W supplemented with mixture of L-PBP, A-PBP, and chitosan, the weight-reduction effect (11.8%) and hypocholesterolemic effect (11.0%) was most significant, indicating their synergistic action. These data suggested that the weight-controlling and hypolipidemic effect of L-PBP and A-PBP was involved, at least in part, in absorption of cholesterol as their role of dietary fiber, as well as cholesterol metabolism.
Journal of the Korean Society of Food Science and Nutrition
/
v.33
no.1
/
pp.52-58
/
2004
The active principle responsible for lipid lowering in Chinese cabbage kimchi, 3-(4-hydroxyl-3'5'-dimethoxyphenyl)propionic acid, of molecular weight 226, was chemically synthesized and then used for the treatment of hypercholesterolemia in male New Zealand white rabbit. Hypercholesterolemia in rabbits were induced by feeding 0.5% cholesterol added chow diet for 5 weeks. Each experimental group has four rabbits in it. for the 1st experiment,3-(4-hydroxyl-3'5'-dimethoxyphenyl)propionic acid or simvastatin was injected to the ear vein of rabbit every other day for 16 days (2 mg/3 kg/2 days) while normal chow diet was provided. Blood was drawn every 4th day. For the 2nd experiment, all the experimental condition was same as the 1st trial except 0.5% cholesterol diet was provided while 16 days. Plasma cholesterol level was decreased when cholesterol in the diet was removed. Decreased in cholesterol in kimchi and simvastatin groups were 18.65 and 29.67%, respectively compared to the control when the normal diet was given, and cholesterol increase was inhibited by 33.79 and 21.81% for kimchi and simvastatin groups, respectively, when 0.5% cholesterol diet was provided. The drop in LDL-C level by the active principle of kimchi and simvastatin was not significant when normal diet was given, however the changes was significant (p<0.05), approximately 130% decrease, when 0.5% cholesterol diet was given. The 105% and 62% decreased in triglyceride concentration were observed from 0.5% cholesterol diet fed kimchi and simvastatin groups respectively HDL cholesterol levels in experimental groups were not changed significantly from the both trials. The HMG-CoA reductase activity of kimchi and simvastatin groups were found to be higher than that of control to compensate the hypercholesterolemic condition induced by 0.5% cholesterol diet in these groups. In conclusion, diet is an important factor to control the hypercholesterolemia besides drug treatment. 3-(4-hydroxyl-3'5'-dimethoxyphenyl)propionic acid that is the active principle in Chinese cabbage kimchi seems a beneficial to the hypercholesterolemia and its effect is comparable to that of simvastatin.
Purpose : Although there are a lot of the reports about the persistence of anti HBs titer of plasma derives HBV vaccine, it is difficult to find the follow up studies of the recombinant HBV vaccine. We performed this study to compare the persistence of anti HBs titer by vaccination schedule and the seronegative rate of 5 years later according to Anti HBs titer after basic immunization in neonatal period by recombinant HBV vaccination. Methods : This study was performed on 420 neonates at Pusan Moon Hwa Hospital from April to December 1993, followed up for 5 years after basic immunization by recombinant HBV vaccine. The anti HBs titer test was done by radioimmunoassay(RIAAUSAB, Abbott laboratories). The positive anti HBs level that would protect against HBV infection was defined as a level equal to or greater than 10mIU/mL. Results : In this study the seronegative rate after 5 years was 5% in 2 month schedule group, 25.5% in 6 month schedule group(P>0.05). In 2 month schedule group the seronegative rate was 20% when anti HBs titer is lower than 200mIU/mL, 0% when more than 200mIU/mL(P>0.05). In 6 month schedule group the seronegative rate was 66.7% when anti HBs titer was lower than 200mIU/mL, 40% when 200~499.9mIU/mL, 23.9% when 500~999.9mIU/mL, 22.5% when more than 1000mIU/mL. Conclusion : In this study the seronegative rate after 5 years of recombinant HBV vaccination was 5~25.5%. The persistence of anti HBs titer was statistically irrelevant to schedule. The seronegative rate after 5 years was statistically irrelevant to anti HBs titer after basic immunization.
In 1987, the level of heavy metals were determined ina total of 200 samples of 9 species of shellfish of Korea. The samples were collected at the fish. markets by 10 Public Institute of Health. The samples were whelk (Buccinum striatiBBimum), oyster (Crassostrea gigas), ark shell(Tegillarca granesa), shartnecked clam (Venerupis semidecussta), hard clam (Meretrix lusoria), top shell (Turbo cornutus), abalone (Haliotis gigantea), ark shell (Scapharea broughtonii), sea-mussel (Mytilus conuscus gould), respectively. The levels of total mercury, lead, cadmium, arsenic, copper, zinc and manganese were determined. The total mercury levels were determined by mercury analyzer using the combustion gold amalgamation method. The arsenic level were determined by spectrophotometry using colorimetric sil ver diethyldithiocarbamate method after dry ash dige8tion of the samples with magnesium oxide and magnesium nitrate. The levels of other metals were determined by inductively coupled pluma spectrophotometry after wet digestion of the samples with nitric acid and su1furic acid. The results were summerized as follows; 1. The overallranges and mean(ppm) were; Hg, ND-O.221 (0.036); Pb, 0.05-1.51 (0.37); Cd, 0.02-1.86 (0.61); As, 0.5-3.97 (1.22); Cu, 0.14-54.16 (4.93); Zn, 7.40-207.17 (30.09); Mn, 0.13-s.72 (3.40). 2. The levels of all 6 metals were found to be below the maximum permissible Iimits set by the Japan lor mercury, the Netherland for lead the Hong Kong for cadmium. The Finland for Arsenic no statutory Iimits for Zn and Mn in shellfish in any countries. 3. The results show that all the 9 species of shellfish studied, none have accumulated levels dangerous enough to pose a health problem.roblem.
The present study was investigated to evaluate on the health improving effect of Kochujang (Fermented Korean hot pepper paste), which was famous as Korean traditional healthy food among foreigners as it was served together with Bibimbap. For comparison, observation was made on the experimental animals (Sprague-Dawley rat) as breeding during 5 weeks, which were divided three groups as into the control groups (N-group) fed with normal feed only and high cholesterol feed only (H-group) and the K-group with combined diet of normal feed and Kochujang extracts (Water soluble complex materials). The most outstanding result was found as the definite fatty liver lesions found from all (100%) of the rats of the H-group at the abdominal opening examination. On the other hand, there was any finding on fatty liver lesions in the N-group as well as the K-group. Therefore, it was more than enough to identify the hypolipidemic effect by visual finding only. Furthermore, from the results of blood plasma analysis from SD-rats fed with Kochujang extract (K-group), more prominent differential findings were found, the value of HDL-cholesterol, which was good for preventing the arteriosclerosis, was more or less higher than that of H-groups. But the level of LDL-cholesterol, which was one of the hazardous agents of hyperlipidemia and arteriosclerosis, was more significantly reduced to the level even lower than that of N-group, based on the statistical analysis, in especial. According to the present results, we could find that the unidentified Korean traditional Kochujang-derived complex components had expressed both the positive health improving effects and hypolipidemic effects on the SD-rat.
Kim, Sung-Dan;Ham, Hee-Jin;Jung, Ji-Hun;Lee, Eun-Soon;Lee, Hyun-Kyung;Kim, Hee-Sun;Lee, Jib-Ho;Yu, In-Sil;Jung, Kweon
Journal of the Korean Society of Food Science and Nutrition
/
v.45
no.8
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pp.1138-1146
/
2016
This study was performed to estimate daily intakes of aluminum from Platycodon grandiflorum A. De Candolle and evaluate their potential health risks for Koreans. Estimated daily intake of aluminum was calculated, whereas the actual level of aluminum in Platycodon grandiflorum A. De Candolle was analyzed using inductively coupled plasma mass spectrometry. Food consumption amount was drawn from Korea National Health and Nutrition Examination Survey (KNHANES VI-1). In analysed samples, aluminum values ranged from 0.54~564.38 mg/kg in peeled Platycodon grandiflorum A. De Candolle samples (n=53) and from 0.72~28.05 mg/kg in unpeeled ones (n=40). Statistically significant difference (P<0.001) was detected according to the type of skin. To estimate the dietary intake of Platycodon grandiflorum A. De Candolle, a total of 7,242 respondents (scenario I) were compared to 227 Platycodon grandiflorum A. De Candolle consumption subjects (scenario II). Estimated daily intake of aluminum was calculated based on point estimates. Level of safety for aluminum was evaluated by comparison with Provisional Tolerable Weekly Intake (PTWI), 1 mg/kg bw, set by the Joint FAO/WHO Expert Committee on Food Additives. For scenario I, mean estimated daily intake of aluminum was 0.001 mg/kg bw/d. For scenario II, mean estimated daily intake of aluminum was 0.033 mg/kg bw/d, and 95th percentile estimated daily intake was 0.610 mg/kg bw/d. For scenario II, aluminum from Platycodon grandiflorum A. De Candolle had a mean weekly intake that was the 23.1% of PTWI.
Two experiments were conducted to investigate the effect of betaine on egg production, lipid metabolism, and osmoregulation in 18-to 42-week-old ISA Brown laying hens. In experiment 1, three hundred and sixty one hens were fed a com-soy basal diet contailing 16% crude protein (CP), 2800 kcal/kg metabolizable energy (ME), 0.33% methionine, and 0, 300, 600, or 1200 mg betaine per kg diet. Egg production, egg weight, feed consumption, feed conversion, and egg quality were measured every eight weeks. Betaine concentration in live and egg were determined along with serum cholesterol, abdominal fat, total serum protein and albumin levels. In experiment 2, twenty thirty-three-week-old laying hens were fed the same diets as those used in experiment 1 in individual cages and the amount of feed and water consumption were measured for two weeks. At the end of experiment 2, all birds were killed to determine blood plasma and ileal osmopressure, arginine vasotocin (AVT), and liver moisture content. In experiment 1, egg production between the treatments during the first eight weeks were not different, whereas the significant increment of egg production were noticed in the birds fed more than 600 ppm betaine after reaching the peak egg production stage (p<0.05). The egg weight was reduced significantly by the betaine supplementation for the first 8 weeks (p<0.05). Feed conversion tended to improve by betaine supplement. Egg quality was not enhanced by betaine supplementation. Liver betaine level increased with betaine feeding compared to the control but betaine concentration in eggs decreased with betaine supplementation. Betaine supplementation elevated the level of serum total cholesterol and triglyeerides compared to the control. Abdominal fat content was increased by betaine supplementation, whereas liver fat content decreased. In experiment 2, water consumption significantly increased in hens fed diets containing 300 and 600 mg betaine/kg (p<0.05) and osmotic pressure of ileal digesta increased with betaine supplement. Liver moisture content was not affected by betaine, but AVT increased in hens fed betaine. The overal results suggested the possibility of using betaine as a feed additives in the laying hens beacuse of its positive contribution to improving egg production and other metabolic parameters related to lipid metabolism.
This study aimed to develop polyclonal antibodies to regional inedible adipocytes of Korean native cattle (Hanwoo) and investigate cross-reactivity of the antibodies. Patterns in plasma membrane proteins (PMPs) from abdominal and subcutaneous adipocytes of Hanwoo isolated by collagenase digestion were investigated using SDS-PAGE. As antigens, abdominal and subcutaneous adipocyte PMPs of Hanwoo were injected to sheep 3 times at 3 wk intervals for passive immunization, and non-immunized serum and antisera were collected before and after the injections. Titers of the antisera obtained from sheep and their cross-reactivities with heart, kidney, liver, lung, muscle, and spleen of Hanwoo were determined by ELISA. Isolation and culture of abdominal and subcutaneous adipocytes of Hanwoo were performed for analysing LDH concentration. Based on the SDS-PAGE analysis, specific proteins of PMPs in abdominal and subcutaneous adipocytes appeared despite rather similar patterns between both adipocytes. At the level of 1:1,000 dilution, little antibody reactivity appeared in non-immunized serum whereas the antisera had relatively strong reactivity up to the level of 1:128,000 and 1:64,000 dilution. These findings may indicate that strong antibodies against adipocyte PMPs can be developed using an immunological approach. Extremely low reactivities of abdominal and subcutaneous adipocyte antisera were detected with PMPs of the organs. Both antisera strongly reacted with each adipocyte PMPs and showed statistically (p<0.01) higher cross-reactivities compared with non-immunized serum. In conclusion, these results may indicate that the present polyclonal antibodies against regional inedible adipocyte PMPs are well developed and have safety in cross-reactivities with body organs. Further studies on in vivo cross-reactivity and fat reduction of the antibodies against abdominal and subcutaneous adipocytes PMPs of Hanwoo should be required for inedible fat-reduced high quality beef production.
To clarify the annual reproductive cycle in a rockfish, Sebastes schlegeli, monthly changes in gonadosomatic index (GSI), hepatosomatic index (HSI) and histological feature of gonads and plasma levels of sex steroid hormones ($estradiol-l7{\beta},\;17{\alpha},\;20{\beta}-dihydroxy-4-pregnen-3-one,\;testosterone\;and\;11-ketotestosterone$) were investigated. The annual reproductive cycle in females could be divided into 5 periods as follows: 1) recovery period (June to September): serum level of $estradiol-l7{\beta}$ increased gradually; 2) vitellogenesis period (Septemer to february) : vitellogenic oocytes were obsewed, GSI sustained high value, and serum level of $estradiol-l7{\beta}$ increased; 3) gestation period (February-April): developing larva showed in the ovary, and serum levels of $17{\alpha},\;20{\beta}-dihydroxy-4-pregnen-3-one$ and testosterone increased; 4) partrition period (April to May) : larva were delivered, and value of GSI and serum levels of hormones decreased rapidly; 5) resting period (May to June) : value of GSI and serum levels of $estradiol-l7{\beta}$ and testosterone remained low. The annual reproductive cycle in males could be divided into 6 periods; 1) early maturation period (April to June): value of GSI and serum levels of hormones incresed gradually, cyst of spermatogonia incresed in number, and a small number of cyst of spermatocyte was observed; 2) mid-maturation perid (June to September); value of GSI and serum levels of hormones increased, and germ cells in many cysts were undergoing active sperrnatogenesis; 3) late maturation period (September to November) : value of GSI and serum levels of hormones remained high and spermatozoa were released into the lumina of the seminal lobules; 3) spermatozoa dischaging period (Nobember to December) : the lumina of the seminal lobules were enlarged and filled with mature spermatozoa; 4) degeneration period (December to Februauy)i value of GSI decresed and cyst of spermatocyte were decresed in number; 5) resting period (December to April) : no histological changes of testes were observed, and value of GSI and serum levels of hormones remained low. In November, the lumina of the seminal lobules were filled with mature spermatozoa and sperm masses were present in the ovarian cavity. Thus, copulation in this species occurred in November and December.
Chang Young Jin;Min Byung Hwa;Chang Hae Jin;Hur Jun Wook
Korean Journal of Fisheries and Aquatic Sciences
/
v.35
no.6
/
pp.595-600
/
2002
Comparison of blood properties in juvenile black seabream (Acanthopans schlegeli) between transfer from seawater to freshwater (sFW) and transfer from freshwater to seawater (fSW) were investigated for 60 days. Plasma cortisol levels in sFW were significantly increased from 34.2 $\pm$ 28.6 ng/mL at the beginning to 365.6 $\pm$ 136.0 ng/mL at 3 hours, and decreased to the beginning level at 24 hours. However, in fSW, no significant differences in the cortisol levels were recognized throughout experimental period. No significant difference was found in the glucose levels between sFW and fSW. The transfer from seawater to freshwater of juvenile black seabream resulted in reduced $Na^{+}\;and\; Cl^{-}$ concentrations for 24 hours (decreasing from 165.3 $\pm$ 2.5, 146.0$\pm$ 2.2 to 118.3 $\pm$ 12.3, 78.0$\pm$ 7.0 mEq/L, respectively), but these were completely recovered the beginning levels at 30 days. Total protein and AST showed no significant differences between the two rearing conditions, while ALT was markedly elevated at 3 hour in sFW and at 24 hours in fSW. Ht in sFW was increased from 18.5 $\pm$$0.6\%$ at the beginning to 25.3 $\pm$$4.0\%$ at 12 hours, and was decreased to the beginning level at 24 hours. Ht, RBC and Hb in fSW were also significantly higher at 12 hours, but recovered to their initial levels at 24 hours. All fish were dead until 50 days in sFW while survival rate in fSW was $85\%$ at the end of experiment.
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