Serum concentration of selenium were measured ; Studying 36 patients with Hepatoma. 19 with Hepatitis 15 with Liver cirrhosis and 67 Normal control to discover the correlation between serum selenum and cancer. And it have tested also the serum protein and albumin to compare the nutrition status by researching the same persons above The results of those two experiments are as follow : 1) The mean of each group of patients resulting from mearsuing the serum protein content showing 6.91$\pm$0.10g/dl in the patients with hepatoma 7.05$\pm$0.17g/dl in the ones with hepatitis 6.42$\pm$0.13g/dl in the ones with liver cirrhosis and 7.46$\pm$0.06g/dl in the normal control is all being within the normal range such as 6.0-0.8(g/dl) while the distribution is revealin 10.5%, 13.3% in the patients with hepatitis and liver cirrhosis which are below the normal range and 47.2%, 96.9%, 80.0% in the low range of normal one ; therefore in could see that patientsw compared with normal control are in low level in the serum protein content 2) The mean based on the consquence of serum albumin measurement is 3.74$\pm$0.11g/dl. 4.26$\pm$0.13g/dl 4.73$\pm$0.06g/dl in the patients with hepatoma hepatits and normal control which are in between the normal range such as 3.5-5.5(g/dl) except the patients with liver cirrhosis(3/05$\pm$0.12g/dl) while the distribution of the patients with hepatoma an liver cirrhosis is showing 27.8% 73.3% which are below the normal one and 55.5%, 52.6% and 26.7% in the patients with hepatoma hepatits and liver cirrhosis which are in the low area of normal range ; as a result It could find that patients. compared with the normal control are in low level in serum albumin measurement. 3) The mean consulting the serum concentration is 430.86$\pm$26.06$\mu\textrm{g}$/1, 192.37$\pm$18.15$\mu\textrm{g}$/1 186.73$\pm$23.99$\mu\textrm{g}$/1, 196.94$\pm$8.94$\mu\textrm{g}$/1 in the patients with hepatoma hepatitis liver cirrhosis and noramal control ; it shows 2.19 times increasing of serum selenium concentra-tion in the patients with hepatoma 'compared with the normal control and patients with hepatoma spread out at a still higher range in serum selenium concentration test. 4) The serum selenium concentration is not quite dependent on sexes and doesn't show any correlation with age, serum protein, serum albumin. The nutrition status of patients, rested on the results of those experiments, stays in low level, which is caused by that they are in low stage of serum protein and serum albu¬min. In serum selenium concentration, patients with hepatitis and liver cirrhosis, specially, show the condition as good as normal control's; while patients with hepatoma are indicating a significant increasing compared with the three groups, which can be reasoned into that there is a possibility for the patients to take selenium and chemotherapy or radiation treatment, and have high serum selenium concentration by poor excreting of seleno methionine, which is caused by low serum protein content And another thing can be reasoned is that the difference in origination mechanism hetween korean and western people. As a result, It showed that the correlation between serum selenium and seses, age, serum protein, and serum albumin neither exists nor affects on each other.
The purpose of the Monte Carlo simulation study was to provide the optimized nozzle design to satisfy the beam conditions for biomedical researches in the Korean heavy-ion accelerator, RAON. The nozzle design was required to produce $C^{12}$ beam satisfying the three conditions; the maximum field size, the dose uniformity and the beam contamination. We employed the GEANT4 toolkit in Monte Carlo simulation to optimize the nozzle design. The beams for biomedical researches were required that the maximum field size should be more than $15{\times}15cm^2$, the dose uniformity was to be less than 3% and the level of beam contamination due to the scattered radiation from collimation systems was less than 5% of total dose. For the field size, we optimized the tilting angle of the circularly rotating beam controlled by a pair of dipole magnets at the most upstream of the user beam line unit and the thickness of the scatter plate located downstream of the dipole magnets. The values of beam scanning angle and the thickness of the scatter plate could be successfully optimized to be $0.5^{\circ}$ and 0.05 cm via this Monte Carlo simulation analysis. For the dose uniformity and the beam contamination, we introduced the new beam configuration technique by the combination of scanning and static beams. With the combination of a central static beam and a circularly rotating beam with the tilting angle of $0.5^{\circ}$ to beam axis, the dose uniformity could be established to be 1.1% in $15{\times}15cm^2$ sized maximum field. For the beam contamination, it was determined by the ratio of the absorbed doses delivered by $C^{12}$ ion and other particles. The level of the beam contamination could be achieved to be less than 2.5% of total dose in the region from 5 cm to 17 cm water equivalent depth in the combined beam configuration. Based on the results, we could establish the optimized nozzle design satisfying the beam conditions which were required for biomedical researches.
Ryu, Jung Kyu;Oh, Jang-Hoon;Kim, Hyug-Gi;Rhee, Sun Jung;Seo, Mirinae;Jahng, Geon-Ho
Investigative Magnetic Resonance Imaging
/
v.18
no.1
/
pp.1-6
/
2014
Purpose : $T_2{^*}$ relaxation time which includes susceptibility information represents unique feature of tissue. The objective of this study was to investigate $T_2{^*}$ relaxation times of the normal glandular tissue and fat of breast using a 3T MRI system. Materials and Methods: Seven-echo MR Images were acquired from 52 female subjects (age $49{\pm}12 $years; range, 25 to 75) using a three-dimensional (3D) gradient-echo sequence. Echo times were between 2.28 ms to 25.72 ms in 3.91 ms steps. Voxel-based $T_2{^*}$ relaxation times and $R_2{^*}$ relaxation rate maps were calculated by using the linear curve fitting for each subject. The 3D regions-of-interest (ROI) of the normal glandular tissue and fat were drawn on the longest echo-time image to obtain $T_2{^*}$ and $R_2{^*}$ values. Mean values of those parameters were calculated over all subjects. Results: The 3D ROI sizes were $4818{\pm}4679$ voxels and $1455{\pm}785$ voxels for the normal glandular tissue and fat, respectively. The mean $T_2{^*}$ values were $22.40{\pm}5.61ms$ and $36.36{\pm}8.77ms$ for normal glandular tissue and fat, respectively. The mean $R_2{^*}$ values were $0.0524{\pm}0.0134/ms$ and $0.0297{\pm}0.0069/ms$ for the normal glandular tissue and fat, respectively. Conclusion: $T_2{^*}$ and $R_2{^*}$ values were measured from human breast tissues. $T_2{^*}$ of the normal glandular tissue was shorter than that of fat. Measurement of $T_2{^*}$ relaxation time could be important to understand susceptibility effects in the breast cancer and the normal tissue.
Kim, Eun Ju;Kim, Daehong;Lee, Sangwoo;Heo, Dan;Lee, Young Han;Suh, Jin-Suck
Investigative Magnetic Resonance Imaging
/
v.18
no.1
/
pp.52-58
/
2014
Purpose : To establish a pH measurement system for a mouse tumor study using a clinical scanner, to develop the $^1H$ and 31P radio frequency (RF) coil system and to test pH accuracy with phantoms. Materials and Methods: The $^1H$ and the $^{31}P$ surface coils were designed to acquire signals from mouse tumors. Two coils were positioned orthogonally for geometric decoupling. The pH values of various pH phantoms were calculated using the $^1H$ decoupled $^{31}P$ MR spectrum with the Henderson-Hasselbalch equation. The calculated pH value was compared to that of a pH meter. Results: The mutual coil coupling was shown in a standard $S_{12}$. Coil coupling ($S_{12}$) were -73.0 and -62.3 dB respectively. The signal-to-noise ratio (SNR) obtained from the homogeneous phantom $^1H$ image was greater than 300. The high resolution in vivo mice images were acquired using a $^{31}P$-decoupled $^1H$ coil. The pH values calculated from the $^1H$-decoupled $^{31}P$ spectrum correlated well with the values measured by pH meter ($R^2$=0.97). Conclusion: Accurate pH values can be acquired using a $^1H$-decoupled $^{31}P$ RF coil with a clinical scanner. This two-surface coil system could be applied to other nuclear MRS or MRI.
Yoo, Keon Hee;You, Dong Kil;Lee, Soo Hyun;Sung, Ki Woong;Cho, Eun Joo;Koo, Hong Hoe
Clinical and Experimental Pediatrics
/
v.48
no.2
/
pp.178-185
/
2005
Purpose : The purpose of this study was to evaluate the outcome of children with juvenile myelomonocytic leukemia(JMML) treated with allogeneic hematopoietic stem cell transplantation(allo-HSCT). Methods : Eleven JMML patients aged 8-39 months underwent allo-HSCT. The sources of grafts were unrelated donors(n=7), HLA-matched siblings(n=3) and an HLA 1-antigen mismatched familial donor. All patients had received chemotherapy ${\pm}13$-cis-retinoic acid(CRA) before transplant, and CRA was used, posttransplant, in six patients. Results : Only three patients were in complete remission(CR) at the time of transplantation. Initial chimeric status revealed complete donor chimerism(CC) in five patients, mixed chimerism(MC) in five and autologous recovery(AR) in one. One patient with MC having persistent splenomegaly eventually turned to CC and CR after rapid tapering of cyclosporine, combined with daily use of CRA. An AR case relapsed shortly after transplant but was rescued with second, unrelated cord blood transplantation. Ultimately, six patients are alive, event-free, with a median follow-up of 15.5 months posttransplant. All three deaths occurred in patients who failed to achieve CC, leading to disease progression. Conclusion : We suggest that graft-versus-leukemia effect play an important role and CRA a possible role in posttransplant leukemic involution in JMML. In patients whose leukemic burden is still high with MC after transplant, early tapering of immunosuppressants and introduction of CRA might provide a chance of a cure for some patients.
Kim, Jin-Ju;Kim, Sun-Jung;Kim, Sun-Hee;Park, Hae-Ryong;Lee, Seung-Cheol
Journal of the Korean Society of Food Science and Nutrition
/
v.35
no.3
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pp.278-283
/
2006
Styela clava was processed by four different kinds of method including FR (fresh S. clava), H1 (heat treated S. clava at $110^{\circ}C$ for 15 min) H2 (heat treated S. clava at $120^{\circ}C$ for 5 min), and FD (freeze dried S. clava). Each S. clava sample was treated with methanol, ethanol, acetone, and water, then antioxidant and anticancer activities of the extracts were evaluated. In extracts from non-dried S. clava (FR, H1, and H2), total extract yield decreased with increasing treated temperature. The extraction yield was in the order of ethanol>methanol>water>acetone among treated solvents. In case of dried S. clava (FR), the extraction yield was lower than non-dried samples, and was in the order of methanol>ethanol>water>acetone. The radical scavenging activity (RSA) of non-dried S. clava (FR, H1, and H2) was in the order of acetone>ethanol>methanol and heat treatment also decreased RSA. RSA of FD was the highest in ethanol extract, while acetone and water extracts did not show RSA. When antioxidant activity was determined by reducing power (RD), methanol extract of FR showed the highest values and heat treatment decreased RD, too. RD of FD was in the order of methanol>ethanol>water>acetone. The acetone extracts from FD showed significant anticancer activity against human colon cancer cell line HT-29. These results indicated that extraction yield and properties of extracts from S. clava were dependent on processing temperature, solvent and/or physicochemical state. The appropriate extraction process should provide some valuable bioactive materials from S. clava.
Journal of the Korean Society of Food Science and Nutrition
/
v.36
no.5
/
pp.515-520
/
2007
This study was peformed to determine the antioxidative, antimutagenic and cytotoxic effects of the natural seasoning using Lentinus edodes powder (NSLP) by DPPH (2,2-diphenyl-1-picrylhydrazyl) free radical donating method, Ames test, and cytotoxicity, respectively. The scavenging effect on DPPH radical in ethyl acetate fraction of NSLP showed $155{\mu}g\;of\;RC_{50}$. The direct antimutagenic effects of ethanol extract and its solvent fractions of NSLP were examined by Ames test using Salmonella Typhimurium TA98 and TA100. In the Ames test, ethanol extract of NSLP alone did not exhibit any mutagenicity and most of the samples showed high antimutagenic effects against mutation induced by N-methyl-N'-nitro-N-nitroso guanidine (MNNG) and 4-nitroquinoline-1-oxide (4NQO). Ethyl acetate fraction of NSLP ($200{\mu}g/plate$) showed approximately 82% inhibitory effect on the mutagenesis induced by 4NQO against TA98 strain, whereas 84% and 80% inhibitions were observed on the mutagenesis induced by 4NQO and MNNG against TA100 strain. In anticancer effects of ethanol extract and its solvent fractions of NSLP against cancer cell lines including human lung carcinoma (A549), human breast adenocarcinoma (MCF-7), human hepatocellular carcinoma (Hep3B), human cervical adenocarcinoma (HeLa) and human gastric carcinoma (AGS) were investigated. The treatment of 1 mg/mL ethyl acetate fraction of NSLP showed strong cytotoxicity of 56.7%, 84.9%, 64.6%, 85.1% and 71.5% against A549, MCF-7, Hep3B, HeLa and AGS, respectively. In contrast 1 mg/mL treatment of NSLP extract and its solvent fractions had only $4{\sim}40%$ cytotoxicity on human transfomed primary embryonal kidney cell (293). From this result, it is suggested that NSLP is believed to have possible antioxidative, antimutagenic and anticancer capacities.
Telomeres at the end of chromosomes consist of tandem repeats of (TTAGGG)n DNA sequence and associated proteins. Telomeres have the essential functions in chromosome stability and genome integrity and are hence related to cell senescence and cancer. This study was carried out to quantify the amount of telomeric DNA and establish age prediction equations by using the quantity of telomeric DNA for cattle. Analysis of the telomere quantity of the lymphocytes was performed at different age, across breeds and between different sexes of cattle. We quantified the amount of telomeric DNA by the Q-FISH technique using the telomeric DNA probe in 460 cattle at age of 1~166 months in Korean Cattle and Holstein breeds. In results, we found that the amount of telomeric DNA decreased gradually with age. The amount of telomeric DNA of Korean Cattle was significantly higher than that of Holstein breed (P<0.01). In addition, the amount of telomeric DNA in male was significantly higher than that in female (P<0.01). Using the relationship between age and the amount of telomeric DNA in cattle, age predicting equations were established as a result of regression analysis. Because sex and breeds influenced telomeric DNA quantity, the age prediction equations were estimated separately in Korean Cattle females and Holstein females. The regression equations were $\hat{Y}$=$38.102X^2$-220.103X + 318.309 (P<0.0001, $R^2$=0.8019) in Korean Cattle females and $\hat{Y}$ = $42.799X^2$ - 199.682X + 242.106 (P<0.0001, $R^2$ = 0.8379) in Holstein females, where the X was quantity of telomeric DNA and Y was predicted age in months. These equations predicted the age of cattle with high significance and accuracy and have high R square values. Thus, it could be possible to scientifically predict the age using the above equations for Korean Cattle and Holstein females.
Purpose: The purpose of this study was to examine the association between intake of antioxidant vitamins and prevalence of metabolic syndrome (MetS) among Korean adults. Methods: A total of 614 subjects aged 30~60 years were recruited from those who received a medical checkup at a general hospital in South Korea between 2009 and 2012. Presence of MetS was determined based on criteria issued by the NCEP ATP III. Intakes of antioxidant vitamins (vitamin A, retinol, carotenoids, vitamin C, and vitamin E) were estimated by combining 3-day diet records with an antioxidant vitamin database for common Korean foods. We used multiple logistic regression analysis to assess the association between dietary intakes of antioxidant vitamins and MetS. Results: Men in the highest tertile for retinol (OR = 0.40, 95% CI = 0.23~0.71, P for trend = 0.0009), carotenoids (OR = 0.57, 95% CI = 0.32~1.00, P for trend = 0.0470), and vitamin E (OR = 0.52, 95% CI = 0.30~0.92, P for trend = 0.0190) intakes had a lower likelihood of having Mets than those in the lowest tertile. The OR of high fasting blood glucose among men in the highest tertile for vitamin A (${\mu}g$ RE: OR = 0.55, 95% CI = 0.32~0.97, P for trend = 0.0417, ${\mu}g$ RAE: OR = 0.52, 95% CI = 0.29~0.92, P for trend = 0.0211), carotenoids (OR = 0.41, 95% CI = 0.23~0.73, P for trend = 0.0036), and vitamin E (OR = 0.47, 95% CI = 0.26~0.82, P for trend = 0.0080) intakes was lower than those in the lowest tertile. In women, subjects in the highest tertile of retinol intakes had a lower prevalence of MetS than those in the lowest tertile group (OR = 0.55, 95% CI = 0.30~0.98). The OR for abdominal obesity was lower among women with the highest vitamin A (${\mu}g$ RE) intakes compared to those in the lowest tertile (OR = 0.51, 95% CI = 0.28~0.93, P for trend = 0.0293). Conclusion: These results suggest that dietary intakes of antioxidant vitamins might be associated with reduced risk of having MetS among Korean adults.
Kim, Seong-Ah;Hei, Yang;Jun, Shinyoung;Wie, Gyung-Ah;Shin, Sangah;Hong, Eunju;Joung, Hyojee
Journal of Nutrition and Health
/
v.50
no.4
/
pp.391-401
/
2017
Purpose: The purpose of this study was to estimate the dietary flavonoid intakes of Korean adults according to socioeconomic status. Methods: Using data from the 2007~2012 Korea National Health and Nutrition Examination Survey, a total of 31,112 subjects aged over 19 years were included in this study. We estimated individuals' daily intakes of total flavonoids and seven flavonoid subclasses, including flavonols, flavones, flavanones, flavan-3-ols, anthocyanins, proanthocyanidin, and isoflavones,by linking food consumption data with the flavonoids database for commonly consumed Korean foods. We compared intakes of flavonoids according to the levels of household income and education. Results: Average dietary flavonoid intakes of the study subjects were 321.8 mg/d in men and 308.3 mg/d in women. Daily flavonoid intakes were positively associated with household income level (p < 0.0001) and education level (p < 0.0001). The subjects in the highest household income and highest education level group (OR 0.37, 95% CI 0.30~0.45, p < 0.0001 in men, OR 0.50, 95% CI 0.41~0.60, p < 0.0001 in women) had a lower likelihood of having low total flavonoid intake (less than 25 percentile) compared to the lowest household income and lowest education level group. The food group that contributed to total flavonoid intake with the biggest difference between the lowest and highest groups for both household income level and education level was beverages. Conclusion: This study shows that socioeconomic status was positively associated with flavonoid intake in a representative Korean population. Further research is needed to analyze the association of flavonoid intake with health outcomes according to socioeconomic status such as household income and education level.
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