Journal of Korean Society of Occupational and Environmental Hygiene
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v.8
no.2
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pp.296-305
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1998
A study was performed to evaluate an effect of toluene or ethanol pretreatment on the toluene metabolism. A slight liver damage in rats was induced by administration of 0.2 ml of toluene or 0.2 ml of 50% ethanol per 100 g of body weight intraperitoneally every other day for four weeks except the last day before sacrifice. One day before sacrifice, toluene was administered to rats pretreated ethanol or toluene and the control. Rats were sacrificed at the 1st, the 2nd, the 3rd and the 4th week after the first administration of xenobiotics mentioned above. Based on the histopathological findings, liver weight per body weight, serum alanine aminotransferase and hepatic glutathione content, toluene- or ethanol-pretreated groups showed the reversible liver injury. By the treatment of one dose of toluene, the contents of hippuric acid in urine was higher in the group pretreated with toluene or ethanol than control. The contents of cytochrome P-450, benzylalcohol dehydrogenase and benzaldehyde dehydrogenase activities were generally more increased in toluene- or ethanol-pretreated rats than control. $K_m$ values of the benzylalcohol dehydrogenase in pooled liver samples from toluene- and ethanol-pretreated groups were similar each other. $V_{max}$ values of toluene- or ethanol-pretreated group was higher than control. In conclusion, the toluene metabolism is accelerated in rats pretreated with toluene or ethanol.
Background : Polycyclic aromatic hydrocarbons (PAH) are well known environmental pollutants. The measurement of PAH in ambient air is not commonly used, because it is quite difficult to perform and is unreliable. Using biomarkers of PAH can be an alternative approach to this problem. The PAH in ambient air is absorbed in particulate matter. Total suspended particulate(TSP) or particulate matter of less than $10{\mu}m$ in diameter (PM10) can be easily measured. Therefore, TSP or PM10 can be used as a surrogate measurements of ambient air PAH. Objectives : We investigated whether the urinary concentration of two biomarkers of PAH, 1-hydroxypyrene (1-OHP) and 2-naphthol, could reflect the total suspended particulate in the general population. Methods : In order to exclude the effects of occupational exposure and smoking, first grade middle school students were included in this study. Four middle schools within a one kilometer boundary of ambient air monitoring stations were selected. Total suspended particulate was regarded as the marker of airborne PAH. Diet and smoking data were collected by self administered questionnaires, and spot urine samples were collected. Urinary 1-OHP and 2-naphthol were analyzed by high performance liquid chromatography. Results : The correlation between urinary 1-OHP, 2-naphthol and passive smoking was not statistically significant. The correlation between urinary 1-OHP and TSP indices was not statistically significant. The correlations between urinary 2-naphthol and TSP of two lag days, one lag day, and zero lag days were statistically significant. The statistical significance of two lag days was the strongest (p=0.001), one lag day was the next (p=0.0275), and zero lag days was the weakest (p=0.0349). Conclusion : Our results imply that the urinary concentration of 2-naphthol can be applied as a PAH exposure marker for the general population with low PAH exposure.
Kim Hong Ki;Jeung Jaeyeal;Park Seung Jong;Kang Sung Ho;Song Young Sun;Lee Ki-Nam
Journal of Physiology & Pathology in Korean Medicine
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v.18
no.2
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pp.474-483
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2004
To know the effects between Cd inhalation toxicity and extract of Radix Achyranthis Bidentatae, 4 rat groups were exposed to Cd aerosol in air using whole-body inhalation exposure for 6 hours/day, 5 days/week, and 4 weeks. Cd concentration in air was 1.03㎎/㎥ and mass median diameter(MMD) was 1.69㎛. 3 different dose intraperitoneal injections of extract of Radix Achyranthis Bidentatae to 3 inhalation exposure groups was done for 4 weeks and the results were as follows: The highest body weight gain for 4 weeks and food intake per day were from inhalation exposure group I and the highest lung and liver weight were also from inhalation exposure group I. The highest kidney weight was from inhalation exposure group III. The lowest Cd content in lung was 33.49㎍/g from inhalation exposure group I. The lowest Cd concentration in blood was 9.36㎍/㎗ from inhalation exposure control. Cd concentrations of 40.02㎍/g in liver and 69.18㎍/g in kidney were the lowest from inhalation exposure group I and III, respectively. The lowest Cd concentration in liver was 21.08㎍/g from inhalation exposure group III and The lowest Cd concentration in kidney was 15.78㎍/g from inhalation exposure group II. For weekly Cd concentration in urine, the value of the fourth week from inhalation exposure group III was the highest. For weekly Cd concentration in feces, the value of the first week from inhalation exposure group III was the highest. The highest metallothionein concentration in lung was 53.42 ㎍/g from inhalation exposure group III and the highest metallothionein concentration in liver was 188.18㎍/g from inhalation exposure group III. The highest metallothionein concentration in kidney was 143.92㎍/g from inhalation exposure group III. The highest Hct, Hb, and WBC values were from inhalation exposure group II and the highest RBC value was from inhalation exposure group III.
Famciclovir is an oral prodrug of the antiherpesvirus nucleoside analogue, penciclovir. In human, famciclovir is orally well absorbed and then undergoes extensive first pass metabolism to penciclovir and essentially no parent compound is recovered from plasma or urine. The purpose of the present study was to evaluate the bioequivalence of two famciclovir tablets, $Famvir^{TM}$ tablet 250 mg (Novartis Korea Ltd.) and Famcivir (Hanmi Pharmaceutical Co., Ltd.), according to the guidelines of the Korea Food and Drug Administration (KFDA). The release of famciclovir from the two famciclovir formulations in vitro was tested using KP VIII Apparatus II method with water. Twenty six healthy male subjects, $24.19{\pm}2.08$ years in age and $71.55{\pm}6.89$ kg in body weight, were divided into two groups and a randomized $2{\times}2$ cross-over study was employed. After a single tablet containing 250 mg as famciclovir was orally administered, blood samples were taken at predetermined time intervals and the concentrations of penciclovir in serum were determined using HPLC with UV detector. The dissolution profiles of two formulations were similar at water. In addition, the pharmacokinetic parameters such as $AUC_t$, $C_{max}$ and $T_{max}$ were calculated and ANOVA test was utilized for the statistical analysis of the parameters using logarithmically transformed $AUC_t$, $C_{max}$ and untransformed $T_{max}$. The results showed that the differences between two formulations based on the reference drug, $Famvir^{TM}$ tablet 250 mg, were -2.93, -8.02 and 10.47% for $AUC_t$, $C_{max}$ and $T_{max}$, respectively. There were no sequence effects between two formulations in these parameters. The 90% confidence intervals using logarithmically transformed data were within the acceptance range of log0.8 to log1.25 (e.g., $log0.92{\sim}log1.01$ and $log0.85{\sim}log1.00$ for $AUC_t$ and $C_{max}$, respectively). Thus, the criteria of the KFDA bioequivalence guideline were satisfied, indicating Famcivir was bioequivalent to $Famvir^{TM}$ tablet 250 mg.
Kim, Se-Mi;Yoon, Hwa;Yoo, Hee-Doo;Kim, Kyung-Ran;Kang, Hyun-Ah;Cho, Hea-Young;Lee, Yong-Bok
Journal of Pharmaceutical Investigation
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v.38
no.3
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pp.199-205
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2008
Famciclovir, 9-(4-hydroxy-3-hydroxymethylbut-1-yl) guanine, is an oral prodrug of the antiherpesvirus nucleoside analogue, penciclovir. In human, famciclovir is orally well absorbed and then undergoes extensive first pass metabolism to penciclovir and essentially no parent compound is recovered from plasma or urine. The purpose of the present study was to evaluate the bioequivalence of two famciclovir tablets, Famvir tablet 750 mg (Novartis Korea Ltd.) and Famcivir tablet 750 mg (Hanmi Pharmaceutical. Co., Ltd.), according to the guidelines of the Korea Food and Drug Administration (KFDA). The release of famciclovir from the two famciclovir formulations in vitro was tested using KP VIII Apparatus II method with water. Twenty six healthy male subjects, $23.38{\pm}1.72$ years in age and $68.59{\pm}7.84\;kg$ in body weight, were divided into two groups and a randomized $2{\times}2$ cross-over study was employed. After a single tablet containing 750 mg as famciclovir was orally administered, blood samples were taken at predetermined time intervals and the concentrations of penciclovir in serum were determined using HPLC with UV detector. The dissolution profiles of two formulations ere similar at water. The pharmacokinetic parameters such as $AUC_t$, $C_{max}$ and $T_{max}$ were calculated and ANOVA test was utilized for the statistical analysis of the parameters using logarithmically transformed $AUC_t$, $C_{max}$ and untransformed $T_{max}$. The results showed that the differences between two formulations based on the reference drug, $Famvir^{(R)}$ tablet 750 mg, were -0.53%, 1.12% and -24.82% for $AUC_t$, $C_{max}$ and $T_{max}$, respectively. There were no sequence effects between two formulations in these parameters. The 90% confidence intervals using logarithmically transformed data were within the acceptance range of log 0.8 to log 1.25 (e.g., $log\;0.9569{\sim}log\;1.0423$ and $log\;0.8763{\sim}log\;1.2136$ for $AUC_t$ and $C_{max}$, respectively). Thus, the criteria of the KFDA bioequivalence guideline were satisfied, indicating Famcivir tablet 750 mg was bioequivalent to Famvir tablet 750 mg.
Primary aldosteronism is a disease that the stimulus for the excessive aldosterone production resides within the adrenal gland. It was first described by conn in 1955. And many cases were reported by physicians at present in the world. But it is relatively rare in Korea, probably due to lack of attension and medical facilities. Only about 13 cases have been reported at present. The clinical, biochemical features in 1 case of primary aldosteranism caused by adrenal hyperplasia that was diagnosed at Yeungnam University Hospital was observed and the following result were obtained. 1. Clinical feature: The present case was 27-year-old woman who was admitted due to general weakness and easy fatigability. The above mensioned chief complaints occurred 8 months prior to admission when she delivered of second baby by cesarian section. Symptoms such as above chief complaints, intermittent muscle paralysis and cramping were noticed. Trousseau's sign was also present. The average blood pressure ranged from 170/90 to 200/120. 2. Biochemical abnormalities: Severe hypokalemia lower than 2.5 mEq/L was presented and 24 hours urine potassium showed markedly increased urinary loss.(228 mEq/day). Plasma renin activity was decreased under normal range with furosemide administration.(Basal renin; 0.01ng/ml/hr, stimulated renin 0.12ng/ml/hr). Saline suppression test revealed markedly elevated levels of aldosterone higher than normal range. (Basal aldosterone; 320.68pg/ml stimulated aldosterone; 451.86pg/ml). And posture test showed decreased plasma renin activity and increased plasma aldosterone level. - PRA(ng/ml/hr)=Bsal: 0.05(0.15~2.33), Stimulated: 0.22(1.31~3.95) - Aldosterone(pg/ml)=Bsal: 242.77(10~160), Stimulated: 432.09(40~310) 3. Adrenal CT scan revealed no abnormal findings. 4. Treatment and course: Spironolactone was given at OPD with regular follow-up. Her blood pressure ranged from 150/90 to 160/100 and symptoms were improved. The effect of treatment was satisfactory and further follow up would be performed.
Shin, Woo Jong;Moon, Yeo Ok;Yoon, Hye Ran;Dong, Eun Sil;Ahn, Young Min
Clinical and Experimental Pediatrics
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v.46
no.3
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pp.295-301
/
2003
Glutaric aciduria type 1(GA1) is an autosomal recessive disorder of the lysine, hydroxylysine and tryptophan metabolism caused by the deficiency of mitochondrial glutaryl-CoA dehydrogenase. This disease is characterized by macrocephaly at birth or shortly after birth and various neurologic symptoms. Between the first weeks and the 4-5th year of life, intercurrent illness such as viral infections, gastroenteritis, or even routine immunizations can trigger acute encephalopathy, causing injury to caudate nucleus and putamen. But intellectual functions are well preserved until late in the disease course. We report a one-month-old male infant with macrocephaly and hypotonia. In brain MRI, there was frontotemporal atrophy(widening of sylvian cistern). In metabolic investigation, there were high glutarylcarnitine level in tandem mass spectrometry and high glutarate in urine organic acid analysis, GA1 was confirmed by absent glutaryl-CoA dehydrogenase activity in fibroblast culture. He was managed with lysine free milk and carnitine and riboflavin. He developed well without a metabolic crisis. If there is macrocephaly in an infant with neuroradiologic sign of frontotemporal atrophy, GA1 should have a high priority in the differential diagnosis. Because current therapy can prevent brain degeneration in more than 90% of affected infants who are treated prospectively, recognition of this disorder before the brain has been injured is essential for treatment.
This research focused on a total of 378 patients with external injuries under the age of 14 who visited the emergency center at a university hospital in Korea, during the months of January, April, August and November between January and December of 2007. In addition, the survey was conducted only on even number days and ranged across the whole year to reflect the impact of seasonal characteristics on the collected data. The research focused on determining the characteristics and inflicting cause of these patients with external injuries, analyzed the total time spent in the emergency room and obtained the following results. 1. When classifying the patients into different genders, the proportion of males (67.5%) was higher than that of females (32.5%). According to the different age groups, the highest ratio, at 61.1 %, was patients under the age of six. 2. Looking at the total number of minutes spent in the emergency room, the longest amount of time occurred during April with 162.7 minutes, followed by 121.9 minutes in January and 92.4 minutes in November. August had the shortest period of time spent in the emergency room, a significant statistical difference from the other periods of the year (p<0.001). 3. Regarding the amount of time required for each examination, patients required to provide a urine test spent an average of 204.7 minutes while those who did not spent 113.5 minutes on average. This is a 5% statistical difference among the two groups (p>0.05). 4. Looking at the five most commonly diagnosed problems in the emergency room, the total number of people with these top five commonly diagnosed illnesses comprised 55.6%, or 210 patients out of 378. 5. Utilizing the Decision Tree Model to estimate the total number of minutes required per visit, the first classifications were made using a chemical examination factor. People subject to chemical classification spent an average of 177.7 minutes, which was longer than the overall average of 115.2 minutes, and those exempt from chemical examination spent an average of 103.8 minutes, which was shorter than the average Conclusion; Effort to curtail the total time spent in emergency rooms is vital in guaranteeing efficient management of hospitals and providing medical services. The delay experienced by many comprehensive professional medical centers must be resolved through the establishment of effective delivery of medical services, increased supply of patient rooms and other policy oriented implementations. However, for now, this problem must be resolved by increasing the level of patient satisfaction and guaranteeing effective operation of patient rooms, which will significantly contribute to the general management and success of hospitals and institutions.
Journal of The Korean Society of Inherited Metabolic disease
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v.16
no.1
/
pp.52-56
/
2016
Propionic acidemia (PA) is a rare autosomal recessive metabolic disease caused by the deficiency of propionyl-CoA carboxylase (PCC). PA affects the catabolism of branched chain amino acid and oddchain fatty acid then results in accumulation of propionic acid and other metabolites in plasma and urine. Catabolic stress such as infection, illness or any stress can precipitate cause acute metabolic decompensation, especially in the first years of life. Acute metabolic decompensation commonly calls for emergency treatment or admission and if the patient is in a serious condition, it can lead to coma or death. But frequent admissions or visiting the emergency room are much burden to the patients and their kins. And we experienced the propionic academia with a confirmed novel mutation and the patient suffered from frequent admission and visiting the emergency room. So, we tried the regular home carebased fluid therapy after securing a central venous line. Finally, we succeeded in preventing frequent admissions resulted from acute metabolic decompensation and could contribute to relieving the burden to the patient and their family.
This study was designed to comparse the metabolic effects of Korean diet pattern which contained all-polished rice and 70% polished rice, and to compare dietary restriction. The results were as follows. 1. Food intake survey to catch the Korean diet pattern The calory intake showed women took much more than men and farm village was higher than city, However, protein intake showed men were higher than women and decrease gradually from city, fishing village, and farm village. Calcium intake showed Seoul was the first rank of all, but was merely 70% of recommended quantities. Fe intake was greatly short especially in women and vitamin C also showed same situation. In the view of food group intake, grains and potatoes were 70.06%, vegetables and fruits 13.05%, meats fishes and beans 11.99%, respectivelly. Oil and fat intake showed lowest percentage as 0.77%. 2. Nutritional experiments albino rats have been fed for 7 weeks with three different diet: all-polished rice diet, 70% polished rice diet, and the standard diet for contral group. Dietary restriction were at 4 levels: 5% , 10%, 15%, 20% in 70% polished rice det. Body weight of 70% polished rice group gained value compare to all polished rice group. In the final organ weight all-polished rice group and 70% polished rice group and 70% polished rice group revealed similar results, but organ weight almost decreased dued to dietary restriction and statistical data showed significant differences between dietary restriction group and none-restriction group. In the femur length, 70% polished rice group was longer than all polished rice group but there was no significant differences. The nitrogen content of liver and muscle of 70% polished rice group was higher than all-polished rice group. Furthermone there was significant differences in the female (P<0.1). In the 10% restriction group(female) and 15% restriction group(male), nitrogen retention was higher than 0% restriction group. The other biochemical analysis such as liver lipid, serum cholesterol, glucose of urine, feces and serum were not revealed any significant differences. As a result of studying, it seems clear that 70% polished rice intake influenced much nourshment to white rat growth than all-porished rice intake, and there is no significant influence to animal growth and metabolic effect even if it was restricted $5{\sim}10%$ of diet.
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