1.Autoradiographic studies on the uptake and distribution of C(14)-glucose by Paragonimus westermani.
The Korean Journal of Parasitology 1971;9(1):9-16
Autoradiographic study was performed in order to know the distribution of exogenous C(14)-glucose by lung fluke, Paragonimus westermani, incubated in Tyrode medium containing 10 uCi/ml of labeled substance. After 1 hour incubation at 37C, microautoradiographs of this fluke showed that black grains derived from radioactive carbon were accumulated mainly in the parenchyme and subcuticular musculature. The muscular tissues such as oral sucker, pharynx and ventral sucker revaled considerable density of fine grains. Slight radioactivity was also observed in the regions of ovary, testes, vitelline follicles, eggs in uterus, intestinal ceca, and even in excretory bladder. Structures showing the least activity included the cuticle and uterine tubules of this fluke.
parasitology-helminth-trematoda- Paragonimus wertermani
;
autoradiography
;
biochemistry-glucose
;
Tyrode
;
glucose
2.Incorporation of exogenous D-glucose-1-(14)C and D-manose-1-(14)C into glycogen and lactate excreted by Angiostrongylus cantonensis in vitro.
The Korean Journal of Parasitology 1975;13(1):38-46
The amount of labelled glucose incorporated into glycogen is 6 times as much as that of labelled mannose by the female worms. They excreted lactate of labelled glucose-origin 3-4 times as much as that of labelled mannose-origin. The amount of labelled glucose incorprated in worm bodies is about 3 times as much as that of labelled mannose. Male worms absorbed a half amount of glucose by female worms. Paralelled with radioactivity studies mentioned above, chemical determinations of sugars, lactate, and glycogen were performed on the media prior and posterior to incubation and the worms. The results obtained from chemical determinations fairly agreed with those on lactate production and sugar consumption from radioactivity studies, but not on glycogen content of worms after incubation. Chemical determination shows no glycogen synthesis in worms incubated in mannose media while the radioactivity of labelled mannose was detected, though it is very low in activity, from glycogen of worms in the media. Coupled with previously reported findings, results from the present study show mannose to be far less significant in the carbohydrate metabolism of Angiostrongylus cantonensis as compared with glucose.
parasitology-helminth-nematode
;
lactate
;
glucose
;
mannose
;
glycogen
;
biochemistry
;
Angiostrongylus cantonensis
3.Metabolism of C(14)-glucose by Eurytrema pancreaticum.
Byong Seol SEO ; Han Jong RIM ; Kwang Soo KIM ; Myung Sang LEE ; Yeong Uhn KIM ; Hi Yong SONG
The Korean Journal of Parasitology 1964;2(3):175-178
The glucose uptake rate by Eurytrema pancreaticum was a mean value of 16.44 +/- 2.42 micro-mole/hr/g, and total CO(2) production rate by the fluke averaged 5.82 +/- 0.97 micro-mole/hr/g. The relative specific activity of respiratory CO(2) showed a mean value of 5.75 +/- 0.84 per cent. The rate of CO(2) production derived from medium C(14)-glucose was a mean of 0.33 +/- 0.10 micor-mole/hr/g. Therefore, the average value of 0.32 +/- 0.04 per cent of glucose utilized by the flukes from the medium C(14)-glucose was oxidized to respiratory CO(2). The tissue concentration of glycogen in E. pancreaticum was a mean of 45.50 +/- 2.18 mg/g or 4.55 +/- 0.22 %/g. But the turnover rate of glycogen pool was a mean of 0.027 +/- 0.003 %/hr or 0.009 +/- 0.002 mg/hr/g. The average value of 0.64 +/- 0.23 percent of glucose utilized by the flukes from the medium C(14)-glucose was incorporated into the glycogen. These data account for that only 1 per cent of the utilized glucose by the flukes participated in furnishing the oxidation into respiratory CO(2) and the synthetic process into glycogen.
parasitology-helminht-trematoda- Eurytrema pancreaticum
;
glucose-biochemistry
;
autoradiograhy
;
glucose
;
glycogen
;
CO(2)
4.The Correlation and Accuracy of Glucose Levels between Interstitial Fluid and Venous Plasma by Continuous Glucose Monitoring System.
Young Ha BAEK ; Heung Yong JIN ; Kyung Ae LEE ; Seon Mee KANG ; Woong Ji KIM ; Min Gul KIM ; Ji Hyun PARK ; Soo Wan CHAE ; Hong Sun BAEK ; Tae Sun PARK
Korean Diabetes Journal 2010;34(6):350-358
BACKGROUND: Clinical experience with the continuous glucose monitoring systems (CGMS) is limited in Korea. The objective of this study is to evaluate the accuracy of the CGMS and the correlation between interstitial fluid and venous plasma glucose level in Korean healthy male subjects. METHODS: Thirty-two subjects were served with glucose solution contained same amount of test food's carbohydrate and test foods after separate overnight fasts. CGMS was performed over 3 days during hopitalization for each subjects. Venous plasma glucose measurements were carried out during 4 hours (0, 0.25, 0.5, 0.75, 1, 2, 4 hours) just before and after glucose solution and test food load. The performance of the CGMS was evaluated by comparing its readings to those obtained at the same time by the hexokinase method using the auto biochemistry machine (Hitachi 7600-110). Also, correlations between glucose recorded with CGMS and venous plasma glucose value were examined. RESULTS: CGMS slightly underestimated the glucose value as compared with the venous plasma glucose level (16.3 +/- 22.2 mg/dL). Correlation between CGMS and venous plasma glucose values throughout sensor lifetime is 0.73 (regression analysis: slope = 1.08, intercept = 8.38 mg/dL). Sensor sensitivity can deteriorate over time, with correlations between venous blood glucose and CGMS values dropping from 0.77 during 1st day to 0.65 during 2nd and 3rd day. CONCLUSION: The accuracy of data provided by CGMS may be less than expected. CGMS sensor sensitivity is decreased with the passage of time. But, from this study, CGMS can be used for glucose variability tendency monitoring conveniently to the Korean.
Biochemistry
;
Blood Glucose
;
Extracellular Fluid
;
Glucose
;
Hexokinase
;
Humans
;
Korea
;
Male
;
Plasma
;
Reading
5.Metabolism of C(14)-glucose by Moniezia expansa and Diphyllobothrium mansoni.
Han Jong RIM ; Soo Hyun SEONG ; Chung Jai PARK ; Sang Don RHEE ; Byong Don ON ; Hyun Kyo LEE
The Korean Journal of Parasitology 1965;3(3):112-116
The adult worms of cestodes, Moniezia expansa and Diphyllobothrium mansoni employed in this experiment. The worms were divided into three portions, i.e. immature , mature and gravid proglottids, and each proglottids were incubated in a certain incubation period, and the glucose uptake rate, total CO2 production rate, tissue concentration and their radioactivities were employed as previous reports(Rim et al., 1965). The glucose uptake rate by M. expansa was a mean value of 6.46+/-1.23 micromole per hour per gram of wet wt. and the rate by D. mansoni was a mean value of 18.8+/-0.8 micro-mole per hour per gram of wet wt. The higher rates were observed in the mature proglottid of M. expansa and in the immature proglottid of D. mansoni . The total CO(2) production rates by the worms averaged 14.0+/-2.37 micro-mole per hour per gram in M. expansa and 17.51+/-1.54 micro-mole per hour per gram of wet wt. The relative specific activities of respiratory CO(2)(R.S.A CO(2)) averaged 22.2+/-5.15 percent in M. expansa and 54.2+/-2.2 per cent in D. mansoni. In the both worms, the higher values were obtained in the mature proglottids. Therefore, the average value of 8.84+/-2.66 per cent of glucose utilized by M. expansa and 8.23+/-0.50 percent of glucose utilized by D. mansoni from the medium glucose was oxidized into respiratory CO(2). The tissue concentrations of glycogen were a mean of 2.21+/-0.46 percent per gram of wet wt. in M. expansa and 7.56+/-1.24 percent per gram of wet wt. in D. mansoni. The higher concentration of glycogen was observed in the gravid proglottids of M. expansa, however the gravid proglottids of D. mansoni showed lower concentration of glycogen than the other proglottids. The turnover rate of glycogen pool yielded with a mean of 0.04+/-0.01 miligram per hour per gram of wet wt. of M. expansa, whereas a mean of 1.66+/- 0.46 miligram per hour per gram wet wt. of D. mansoni. Therefore, a mean value of 2.58+/-0.93 per cent(R.G.D gly) of glucose utilized by M. expansa and 53.6+/-1.4 percent by D. mansoni was incorproated into the glycogen . These data account for that at least 11.42 per cent of the utilized glucose by M. expansa and 61.83 per cent of the utilized glucose by D. mansoni participated in furnishing the oxidation into respiratory CO2 and the synthetic process into glycogen.
parasitology
;
helminth
;
Moniezia expansa
;
Diphyllobothrium mansoni
;
metabolism
;
glucose
;
glycogen
;
CO(2)
;
biochemistry
6.Metabolism of C(14)-glucose by Ascaridia galli.
Han Jong RIM ; Kwang Soo KIM ; Soo Hyun SEONG ; Sang Don RHEE ; Byong Jong ON ; Hyun Kyo LEE
The Korean Journal of Parasitology 1965;3(3):107-111
The fowl nematode Ascaridia galli employed in this experiment was obtained from the intestine of domestic fowls at the local market. The worms selected and washed several times in normal sterilized saline solution. Each about thirty of intact worms were incubated in 50 cc volume of special incubation flasks with incubation mixture consisting of 10 cc of Krebs-Ringer phosphate buffer (pH 7.4) to which were added universally labeled C14-glucose and non-radioactive carrier glucose so as to contain concentration of 200 mg per cent. The worms were allowed to incubation for 3 hours in Dubnoff metabolic shaking incubator at 38 C. After incubation period, respiratory CO(2) samples from central well of incubation flask were analysed for total CO(2) production rate and their specific activity of respiratory CO(2). Glycogen samples isolated from worms were analysed for uptake rate was determined by analyzing the difference of the glucose concentration in a medium before and after incubation period . Radioactivities of these series of experiments were counted by an endwindow Geiger-Muller counter as an infinitely thin samples. The quantitative analysis of C(14)-glucose utilized by Ascaridia galli was summarized as the following . The glucose uptake rate by A. galli was a mean value of 1.73+/-0.32 micro-mole per hour per gram of wet wt. and total CO(2) production rate by the worms averaged 8.44+/-1.11 micro-mole per hour per gram of wet wt. The relative specific activity of respiratory CO(2) (R.S.A CO(2)) averaged 2.68+/-0.38 per cent . Thus , a man of 2.68 per cent of total CO(2) production rate was originated from the glucose in the medium, therefore the rate of CO(2) production derived from medium glucose was a mean of 0.23+/-0.03 micro-mole per hour per gram of wet wt. Thus, the average value of 2.58+/-0.55 percent (R.G.D CO(2))of glucose utilized by the worms from the medium glucose was oxidized to respiratory CO2. The tissue concentration of glycogen in A. galli was a mean of 22.59+/-1.18 miligram per gram of wet wt or 2.26+/-0.123 percent per gram, and the turnover rate of glycogen pool yielded with a mean of 0.17+/-0.04 percent per hour or 0.037+/-0.006 miligram per hour per gram of wet wt. Therefore, a mean value of 16.37+/-4.04 per cent (R.G.D gly) of glucose was incorporated to the glycogen. These data account for that at least 18.95 per cent of the utilized glucose by the worms participated in furnishing the oxidation into respiratory CO(2) and the synthetic process into glycogen. According to the above data of the experiment, it is suggested in the metabolic process of glucose by Ascaridia galli that the synthetic process into the glycogen is more active than the oxidative process into the respiratory CO(2).
parasitology
;
helmith
;
nematoda
;
Ascaridia galli
;
metabolism
;
biochemistry
;
glucose
;
CO(2)
;
radioactivity
;
glycogen
;
Krebs Rigner phosphate buffer
7.Metabolism of C(14)-glucose by Paramphistomum cervi.
Byong Seol SEO ; Han Jong RIM ; Sang Il LEE ; Dae Kwan PARK ; Sang Chan MOON
The Korean Journal of Parasitology 1965;3(1):5-9
The trematode Paramphistomum cervi empolyed in this experiment was obtained from the reticulum of cattle slaughtered at the local abbatoir. The worms were selected and washed several times in normal sterilized saline solution. Each about ten of intact worms were incubated in 50 cc volume of special incubation flasks with incubation mixture consisting of 50 cc of Krebs-Ringer phosohate buffer (pH 7.4) to which were added universally labeled C(14)-glucose and non-radioactive carrier glucose concentration of 200 mg per cent. The worms were allowed to incubate for 3 hours in the incubator at 38 C. After incubation period, respiratory CO(2) samples from central wall of incubation flask were analysed for total CO(2) production rate and their specific activity of respiratory CO(2). Glycogen samples isolated from worms were analysed for the tissue concentration and their radioactivities in order to determine the turnover rate of glycogen pool. The glucose uptake rate was determined by analysing the difference of the glucose concentration in a medium before and after incubation period. Radioactivities of these series of experiments were counted by an endwindow Geiger-Muller counter as an infinitely thin samples. The quantitative analysis of C(14)-glucose utilized by Paramphistomum cervi was summerized as the following. The glucose uptake rate by Paramphistomum was a mean value of 2.32+/-0.27 micro-mole/hr/g of wet wt. and total CO(2) production rate by the worms averaged 10.85+/-0.41 micro-mole/hr/g of wet wt. The relative specific activities of respiratory CO(2) averaged 49.72+/-13.20 per cent. Thus, a mean of 49.72 per cent of total CO(2) production rate was originated from the glucose in the medium, therefore the rate of CO(2) production derived from medium glucose was mean of 5.24+/-2.16 micro-mole/hr/g of wet wt. Thus, the average value of 37.46+/-5.28 per cent of glucose utilized by the worms from the medium glucose was oxidized to respiratory CO(2). The tissue concentration of Paraphismum was a mean of 41.56+/-5.82 micro-mole/hr/g of wet wt or 4.16+/-0.72 per cent/g , and the turnover rate of glycogen pool yielded with a mean of 0.12+/-0.014 percent/hr or 0.06+/-0.04 mg/hr/g of wet wt. Therefore, a mean value of 16.75+/-4.84 per cent of glucose was incorporated to the glycogen. These data account for that at least 54.21 per cent of the utilized glucose by the worms participated in furnishing the oxidation into respiratory CO(2) and the synthetic process into glycogen. According to the above data of the experiment, it is suggested in the metabolic process of glucose by the Paramphistomum that the synthetic process into the glycogen is less active than the oxidative process into the resppiratory CO(2).
parasitology-helminth-trematoda
;
Paramphistomum cervi
;
autoradiography
;
biochemistry
;
glucose
;
metabolism
;
CO(2)
;
glycogen
8.Metabolism of C(14)-glucose by plerocercoid of Diphyllobothrium sp..
Byong Seol SEO ; Han Jong RIM ; Sang Il LEE ; Sang Don RHEE ; Wha Suk LEE ; Jae Ryong LEE
The Korean Journal of Parasitology 1965;3(1):1-4
The glucose uptake rate by plerocercoid of Diphyllobothrium sp. was a mean value of 5.35+/-0.80 micro-mole/hr/g of wet wt, and total CO(2) production rates by the plerocercoid larva averaged 7.54+/-0.73 micro-mole/hr/g of wet wt. The relative specific activity into respiratory CO(2) showed a mean value of 7.30 +/-0.90 per cent. The rate of CO(2) production derived from medium C(14)-glucose was a mean of 0.58+/-0.13 micro-mole/hr/g of wet wt. Therefore, the average value of 1.92+/-0.38 per cent of glucose utilized by the larvae from the medium C(14)-glucose was oxidized to respiratory CO(2). The tissue concentration of glycogen in plerocercoid larva was a mean of 46.28 +/-2.23 mg/g or 4.63+/-0.22 per cent/g of wet wt., and the turnover rate of glycogen pool was a mean of 0.049 +/- 0.012 %/hr or 0.010 +/- 0.003 mg/hr/g of wet wt. The average value of 2.76+/-1.00 per cent of glucose utilized by the larvae from the medium C(14)-glucose was incorporated to the glycogen. These data accounts for that only 5 per cent of the utilized glucose by the plerocercoid larvae participated in furnishing the oxidation into respiratory CO(2) and the synthetic process into glycogen.
parasitology-helminth-cestoda
;
Diphyllobothrium sp.
;
sparganum
;
plerocercoid
;
biochemistry
;
autoradiography
;
glucose
;
metabolism
;
CO(2)
9.Metabolism of C(14)-glucose by Fasciola hepatica.
Byong Seol SEO ; Han Jong RIM ; Kwang Soo KIM ; Sang Don RHEE ; Sun Jo LIM ; Wha Suk LEE
The Korean Journal of Parasitology 1964;2(3):170-174
The glucose uptake rate by Fasciola hepatica was a mean value of 9.62 +/- 0.54 micro-mole/hr/g, and total CO(2) production rate by the flukes averaged 24.28 +/- 4.26 micro-mole/hr/g wet wt. The relative specific activity of respiratory CO(2) showed a mean value of 79.89 +/- 1.78 per cent. The rate of CO(2) production derived from medium C(14)-glucose was a mean of 19.55 +/- 3.56 micro-mole/hr/g of we wt. Therefore, the average value of 32.72 +/- 4.8 percent of glucose utilized by the flukes from the medium C(14)-glucose was oxidized to respiratory CO(2). The tissue concentration of glycogen in F. hepatica was a mean of 38.36 +/- 2.91 mg/g or 3.84 +/- 0.29 %/g of wet wt, and the turnover rate of glycogen pool was a mean of 1.6+/-0.22 %/hr or 0.65 +/- 0.13 mg/hr/g. The average value of 37.26 +/- 3.86 per cent of glucose utilized by the fluke from the medium C(4)-glucose was incorporated to the glycogen. These data account for that approximately 70 per cent of the utilized glucose by the flukes participated in furnishing the oxidation into respiratory CO(2) and the synthetic process into glycogen.
parasitology-helminth-trematoda-Fasciola hepatica
;
glucose
;
biochemistry
;
autoradiograhy
;
glycogen
;
CO(2)
10.Effects of Topically Applied Autologous Serum on Aqueous Biochemistry and Endothelial Healing Following Experimental Corneal Alkali Wounds.
Jung Won YOO ; Jnag Hyun CHUNG
Journal of the Korean Ophthalmological Society 1998;39(9):1996-2002
The effect of topically instilled autolohous serum on the healing of endothelium and change of aqueous chemical properties following alkali wounds were evaluated. New Zealand white rabbits, weighing 2.5KG, total 64(64 eyes), were used in this experiment. Standardized corneal alkali wounds were produced by applying a round filter paper of 5.5mm if diameter, soaked in 1N NaOH, to the central cornea for 60 seconds. Autologous serum in the treated group and balanced salt solution (BSS) in the control group were given 4 times per dat for 3 weeks. Endothelial defect areas and the concentrations of ascorbic acid, glucose and minerals in the aqueous humor were measured. Endothelial defect area was not significantly different between autologous serum-treated and control groups. The concentrations of ascorbic acid in the aqueous humor were aignificantly increased in the autologous serum-treated groups compared to the control groups. However, the concentrations of glucose, Na+, K+, Ca++ and Mg++ in the aqueous humor were not statistically different between two groups.
Alkalies*
;
Aqueous Humor
;
Ascorbic Acid
;
Biochemistry*
;
Cornea
;
Endothelium
;
Glucose
;
Minerals
;
Rabbits
;
Wounds and Injuries*