In order to obtain more specific antigenic preparation for the diagnosis of human paragonlmiasis, crude saline extract of whole worm (=PwWWE), secretory.excretory components (PwSEC) and secretion-excretion-free somatic extract (PwSM) of 12 week-old ParagoninBus westermani were filtrated through Sephadex G-200 gel column. The adult Paragonimus worms were obtained from expevimentally infected doge. A total of 11 antigenic solutions was Iyophilised or diluted to adjust protein content of 1mg/ml. To evaluate the antigenicity of crude antigens and fractions, micro-ELISA was done with the sera from P westermani in(ected cases, C. sinensis infected cases and non-infected control cases to detect Paragonimus specific IgG antibody. The results were as follows: 1. When the PwWWE was filtrated through Sephadex G-200 gel, it was separated into three fractions; PwWWE Fr. 1, PwWWE Fr. 2 and PwWWE Fr. 3. The percentage of protein content was 28.0%, 21.6% and 50.4% respectively. The PwSM was also. separated into three fractions; PwSM Fr. 1, PwSM Fr. 2, PwSM Fr. 3. and their percentage of protein content was 41.3%, 38.6% and 20.1%. However, the PwSEC showed different fractionation pattern; i.e. fraction 1 (=PwSEC Fr.1) and 3 (PwSEC Fr. 3) without fraction 2. The percentage of protein content was 14.0% in PwSEC Fr. 1 and 86.0% in PwSEC Fr. 3. 2. When the antigenicity of each Paragonimus crude antigen and fractionated antigen was evaluated for specific IgG aritibody by micro-ELISA in 10 human paragonimiasis sera, PwSEC Fr, 1 was the most potent antigen showing the mean absorbance 1.98. The PwWWE Fr. 1, PwSEC, PwWWE were next to that: their mean absorbance were 1.72, 1.38 and 0.83 respectively. The antigenicity of fractions 2 and 3 was much weaker in binding specific IgG antibody. 3. When the antigens were reacted in micro-ELISA with 10 human clonorchiasis sera, most antigens showed weak reactivity. Each fraction 1 of crude antigens reacted higher than other fractions or crude antigens; the mean absorbance was 0.17 in fraction 1, but in others the absorbances were about 0.06. 4. With non-infected control sera, the result of micro-RLISA revealed almost same pattern with those of the clonorchiasis sera. From the above results, it became apparent that PwWWE Fr. 1, especially PwSEC Fr. 1 was the most potent antigen reacted with Paragonisfaus specific IgG antibody.
Seo, Ja-Kyeom;Yang, Ji-Young;Kim, Hyun-J.;Upadhaya, Santi Devi;Cho, W.M.;Ha, Jong-K.
Asian-Australasian Journal of Animal Sciences
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v.23
no.11
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pp.1455-1461
/
2010
Three rumen-cannulated Holstein steers were fed three diets, each with a different synchrony index (SI) (LS: 0.77, MS: 0.81, and HS: 0.83), in order to examine the effect of diet on rumen fermentation, nitrogen balance, and microbial protein synthesis. Synchrony index was calculated based on the carbohydrate and crude protein fractions of each ingredient and their degradation rates. Feeding the steers diets with different SIs did not influence dry matter, crude protein, NDF, or ADF digestibility. The concentrations of total and individual VFA in the rumens of steers that were fed the two higher-SI diets were higher than in those fed the low-SI diet (p<0.05), but there was no significant difference between the two higher-SI diets. One hour after feeding, steers on the LS diet had lower ruminal pHs than did those fed the MS or HS diets (p<0.05), and animals on the LS diet generally showed higher ruminal $NH_3$-N levels than did animals on the other diets, with the 4-h post-feeding difference being significant (p<0.05). Steers receiving the LS diet excreted more nitrogen (N) in their urine than did those on the two higher-SI diets (p<0.05), and the total N excretion of those on the LS diet was also higher (p<0.05). Microbial N levels calculated from the concentration of urinary purine derivatives were generally higher when the SI was higher, with the highest microbial protein synthesis being produced by steers on the HS diet (p<0.05). In conclusion, in the current study, ingestion of a synchronous diet by Holstein steers improved microbial protein synthesis and VFA production and decreased total N output.
$5HT_{2C}$ receptor among fourteen 5-HT subtypes plays important roles in several disorders such as depression, anxiety, epilepsy, schizophrenia and sleep disorders. The purpose of the study is to investigate pharmacokinetic parameters and bioavailability of a newly synthesized selective agonist of $5-HT_{2C}$ receptor, KOPC-20010 (KP10) in rats after intravenous and oral administration for the development of therapeutic anti-obesity agents. KP10 was administered orally (40 mg/kg) or intravenously (20 mg/kg), blood was collected via a catheter, and analyzed by GC/MSD. The calibration curve of KP10 in plasma and urine showed high linearity ($r^2$ >0.999). The retention times of KP10 in plasma and urine were 8.7 and 9.7 min, respectively. After oral administration of 40 mg/kg, pharmacokinetic parameters were calculated as follows; $C_{max}$ value was $1242.9{\pm}1195.5$ ng/mL at $1.1{\pm}0.6$ hr ($T_{max}$). $AUC_{0->24hr}$ and $AUC_{0>{\infty}}$ were $8034.2{\pm}960.7$ and $10464.1{\pm}681.5\;ng{\cdot}hr/mL$, respectively. The terminal half-life was $21.9{\pm}7.6$ hr. $AUC_{0->24hr}$ and $AUC_{0>{\infty}}$ were $4292.4{\pm}523.0$ and $6111.2{\pm}756.2\;ng{\cdot}hr/mL$, respectively, after 20 mg/kg of intravenous administration. The terminal half-life after intravenous administration was $25.1{\pm}9.4$ hr. Bioavailability of KP10 was determined to 86%. The excretion amount into the urine within 48 hr was approximately 4.7 to 6.7% of the dose administered. These data may be beneficial to the anti-obesity drug development of KP10.
Polyclonal antiserum R101 against aflatoxin $B_1$ ($AFB_1$) was raised in New Zealand white rabbits after injection of bovine serum albumin-$AFB_1$ conjugate. Competitive ELISA (enzyme linked immuno-sorbent assay) demonstrated that antiserum R101 has the highest binding for $AFB_1$ (50% inhibition at 170 fmol) and aflatoxicol II (50% inhibition at 112 fmol). It also reacts with other aflatoxins such as $AFB_2$, $AFG_1$, $AFG_2$, and aflatoxin metabolites ($AFM_1$, $AFM_2$, $AFP_1$, and $AFQ_1$), but it does not cross-react with $AFG_2a$. Using this antiserum, aflatoxins were quantitated in 100 urine samples of undergraduate students at the College of Pharmacy, Sung Kyun Kwan University, Republic of Korea. By ELISA, $AFB_1$ and its metabolites were detected in human urine samples (N=100, male=89, female=11, ages=20~31 yrs) with a range of 1.4~200.6 ng/kg/day (mean$\pm$SD=$18.11{\pm}33.01\;ng\;AFB_1/kg/day$ in males, $3.82{\pm}2.65\;ng/kg/day$ in females). Assuming that urinary excretion is about 7.6% of $AFB_1$ intake (Groopman et al., 1992), we estimated that Koreans were daily exposed to a total dietary $AFB_1$ of $240.20{\pm}438.67\;ng/kg/day$ in males and $50.35{\pm}29.88\;ng/kg/day$ in females, respectively. When the human monitoring data was applied to a linear regression model of Y=21.67X-10.04 {Y=liver cancer incidence per 100,000, X=Log $AFB_1$ intake (ng/kg/day), r=0.99} developed from previously reported epidemiological data, calculated liver cancer incidences attributed to $AFB_1$ exposure were 41.56/100,000 in males and 26.84/100,000 in females. The incidences were similarly correlated with liver cancer mortality rates of 43.43/100,000 in males and 11.23/100,000 in females in Korea. These results suggest that aflatoxin exposure may be an important risk factor for the high incidence of liver cancer in Korea.
Journal of the Korean Society of Food Science and Nutrition
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v.32
no.5
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pp.710-714
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2003
This study was carried out to compare the effects of different plant oil sources on lipid metabolism of insulin dependent diabetic mice. Streptozotocin-induced (65 mg/kg B.W.) diabetic mice were fed four kinds of experimental diets with 20% lipid, which composed of 10% lard, and 10% soy bean oil (SBO), 10% rice germ oil (RGO), 10% rice brab oil (RBO) and 10% sesame oil (SSO) respectively, for 7 weeks. Diet intake, body weight, organs weights and lipids levels of serum, liver and feces were measured. There was no significant difference in diet intake and body weight among experimental groups. But the concentrations of serum triglyceride of RGO and RBO groups, and of serum total cholesterol of RGO and SSO groups were lower than those of the others. The hepatic total cholesterol level was the lowest in RGO group. The contents of total lipid and total cholesterol excreted in feces of RGO and RBO groups were higher than those of SBO and SSO groups. These results suggested that rice germ oil can effectively reduce serum triglyceride level and hepatic total cholesterol concentration of insulin dependent diabetic mice than rice bran oil, soy bean oil and sesame oil, and hypolipidemic effect of rice germ oil be due to increasing fecal lipid excretion. But we need to investigate the more detailed factors on lipid reducing effect in rice germ oil and rice bran oil.
This study was reviewed from 1000 articles related to family planning from 1970 to 1990 and 20 articles associated with natural family planning from 1980 until the present. The purpose of natural family planning(NFP) is to identify the time ovulation of women themselves, to have intercourse with periodic abstinence, and to deliver a healthy child. The ultimate goal of NFP is to promote the family's health. The NFP method is described as periodic abstinence of intercourse to avoid pregnancy by identifying the ovulation time in the menstration cycle. Clinical symptoms and signs of reflection underlying changes in Estrogen and Progesterone are the change of basal body temperature, the change of cervical mucus and cervix, abdominal pain and breast tenderness. The types of NFP are the calender rthythm method, basal body temperature methods, cervical mucus method, symptothermal method, cyclo-thermal method and home based ovulation test kits. Recently the cyclo-thermal method involved. It is calendar rhythm method applied to B.B.T. For the cervical mucus method, when the estrogen level in the blood concentration is increased, the mucus begins to excrete, the amount of moist mucus increases while the mucus is clear, slippery, and smooth. For 3 days, this timing can be considered contraception. Fertility is at a maximum on the day mucus appears, abstinence for 3 days is a type of contraception. Sexual intercourse on a maximum day of mucus maximizes pregnancy potential. But, the contraception depends on the practice of a perfect rule. For basal body temperature methods, at ovulation time, the temperature increases $0.2^{\circ}C-0.5^{\circ}C$. Through the review of literature a high temperature above $0.2^{\circ}C$ for 3 days indicates that the previous 6 day period was ovulation and fertilization. The Symptothermal method is used to determine the prediction of ovulation through the observation of mucus excretion, high temperature, the change of cervical mucus, low abdominal pain, vaginal discharge, and breast change. Home based ovulation test kits are cervico-vaginal fluid aspiration, test a digital electric thermometer, body fluid(blood, saliva, urine) test kits, They are on the market. However, research on the contraception method is still in progress. For pregnancy it is still too early to use home based ovulation test kits because of deficit of reliability and simplicity more research on the technology is needed. It is suggested that NFP methods be included in nursing curriculum in order to educate NFP users how to effectively use NFP methods. Furthermore, this study has implications for the dissemination of NFP methods in terms of Korean policies of family planning and the support of community welfare agences.
To study the effect of preventing the browning reaction between casein and glucose by protecting the reactants using corn starch with coating material, rats were fed for 30 days nonbrowning diet, nonprotected browning diet, browning diet protected only casein, browning diet protected both casein and glucose and browning diet supplement sucrose simultaneously with protecting both casein and glucose. The amounts of fructosyl-lysine excreted through urine were greater than those through feces regardless of diets and the both side of the excreted amounts of fructosly-lysine through urine or feces were greater for rats fed browning diets regardless protecting compared to rats fed the nonbrowning diet. Through urine, the excreted amounts of fructosyl-lysine were decreased for rats fed the browning diet supplemented sucrose simultaneously with protecting both casein and glucose than those for rats fed the nonprotected browning diet and through feces, were decreased for rats fed protected browning diets regardless of protecting method than the nonprotected browning diet. The excreted amounts of all individual essential free amino acids through feces were increased for rats fed browning diets irrespective of protecting compared to the nonbrowning diet, but through urine, were increased or similar level for rate fed the nonbrowning diet compared to browning diets except histidine. The excreted amount of free lysine through feces were decreased for rats fed protected browning diets than nonprotected browning diet. Fructosyl-lysine contents of serum, liver and small intestinal digesta were increased for rats fed browning diets regardless of protecting by starch compared to nonbrowning diet but, of serum and small intestinal digesta were decreased for rats fed protected browning diets than the nonprotected browning diet.
The uptake of cadmium in animals is mainly accumulated in and affected to the liver and kidney by binding with red blood cells and serum albumin. The process accounts for more than 50% of the total accumulated cadmium in the body. The kidneys may be damaged without regarding the pathway uptake of cadmium. In a group of rats on supplements of 1% chlorella and 40 ppm cadmium, the concentration of cadmium in urine greatly decreased by 66% compared to control group, and the total synthesis of metallothionein decreased by 48.6% compared to control group. However, no previous study has assessed the protective effect on kidney damage induced by cadmium uptake through supplementation with chlorella. This study analyzed the biochemical marker for kidney damage in the rats after uptake of 40 ppm $CdCl_2$ and supplementation of the diet of Sprague Dawley (SD) rats with 1%, 5%, and 10% chlorella during 4 weeks. In a group of SD rats on supplementation with 1% chlorella and uptake of 40 ppm $CdCl_2,\;\beta_2$ microglobulin in the urine was found to be $3.1\pm0.6\;{\mu}g/L$, a decrease of 58% compared to a group of Sp rats on uptake of $CdCl_2$ only, in which the $\beta_2$ microglobulin was found to be $4.9\pm0.7\;{\mu}g/L$. According to the results of histopathological observation, the accumulation of mild and localized chronic inflammatory cells in kidney tissues was observed in 50% of the SD rats on uptake of cadmium only. In contrast, only 30% of the SD rats on supplementation with 1% chlorella and uptake of 40ppm $CdCl_2$, representing a histopathological abnormality, and there were no histopathological abnormalities at all in groups of SD rats on supplementation with 5% or 10% chlorella and uptake of 40 ppm $CdCl_2$. In conclusion, protein, calcium, and iron, which account for more than 50% of the total dried chlorella composition, may contribute to the reduction nephrotoxicity by stimulating both inhibited absorption of cadium and increased excretion of accumulated cadmium in kidneys.
Journal of Korean Society of Occupational and Environmental Hygiene
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v.24
no.2
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pp.152-159
/
2014
Objectives: This study aims to investigate the excretion aspect of urinary t, t-MA and hippuric acid by measuring concentrations of urinary metabolites according to the use of gasoline vapor recovery system. Materials:In order to analyze urinary metabolites, samples from the 23 gas station workers ten gas stations in the Seoul and Gyeonggi Province area were collected once daily after work. In addition, a survey was conducted on work factors and lifestyle habits as factors affecting the concentration of urinary metabolites. Results: The average concentrations of t, t-MA and hippuric acid after work were $0.124{\pm}0.177mg/g$ creatinine and $0.557{\pm}0.251g/g$ creatinine among workers at gas stations where gasoline vapor recovery systems were installed. The average concentrations of t, t-MA and hippuric acid were $0.160{\pm}0.113mg/g$ creatinine and $0.682{\pm}0.619g/g$ creatinine among workes at gas stations where gasoline vapor recovery systems were not installed. Average concentrations were higher at gas stations where a gasoline vapor recovery system was not installed, but the differences were not statistically significant differences. Urinary t, t-MA and hippuric acid average concentrations of smokers and non-smokers were higher in the gas stations where gasoline a vapor recovery system was not installed. T, t-MA as a factor evaluation affecting the concentration of urinary metabolites was not statistically significant in all factors, while hippuric acid was statistically significant only for age(p=0.024). Conclusions: The average concentrations of urinary t, t-MA and hippuric acid were higher in gas stations where gasoline vapor recovery systems were not installed compared to gas stations where such a system was installed. There needs to be an assessment of biological monitoring according to refueling activity considering skin absorption of benzene and toluene and presence of gasoline vapor recovery system.
Disposing technique for dairy cattle manure using earthworms and the possibility of utilizing earthworms in poultry feed were investigated. In addition, chemical properties of manure and cast of earthworms were investigated. Temperature in the vinyl-house for earthworm nursery was able to be maintained above 0$\^{C}$ in winter and 25-28$\^{C}$ in summer. In closed-covering method, the number of escaped earthworms was the highest among three covering methods. The time was longer after manure excretion, the numbers of escaped earthworm were higher. There were some incidences of mortality of earthworm in closed-covering site. The amount of manure ingested by earthworm was increased in order of non-covering, closed-covering and gap-covering method. Fresh manure was more ingested than old one by earthworm. Earthworms reduced manure about 50% on the dry weight base and reduced total amounts of N, P$_2$O$\_$5/ and K$_2$O of manure by 41, 50 and 60%, respectively. Earthworm could be utilized by adult poultry (>60 g) for feeding. However, adverse effect of live earthworm was observed with young poultry (<450 g).
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