• Journal of the Optical Society of Korea
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• v.16 no.1
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• pp.57-62
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• 2012

Using continuous wave near-infrared spectroscopy, we measured time-resolved concentration changes of oxy-hemoglobin and deoxy-hemoglobin from the primary motor cortex following finger tapping tasks. These data were processed using partial least squares-discriminant analysis (PLS-DA) to develop a prediction model for a brain-computer interface. The tasks were composed of a series of finger tapping for 15 sec and relaxation for 45 sec. The location of the motor cortex was confirmed by the anti-phasic behavior of the oxy- and deoxy-hemoglobin changes. The results were compared with those obtained using the hidden Markov model (HMM) which has been known to produce the best prediction model. Our data imply that PLS-DA makes better judgments in determining the onset of the events than HMM.

• Korean Journal of Veterinary Research
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• v.14 no.1
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• pp.9-16
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• 1974

The literature on the hematology of dairy cattle contains very important information of physiological and clinical field, but a comprehensive survey on the blood picture of Holstein cows has not been made yet in Korea. The object of the present investigation was to make good this deficiency, and to suggest standards for the blood picture of Holstein cows kept under average farming condition in this country. Observations were made on the blood picture of 30 healthy non-pregnant Holstein cows aging from 6 to 10 years. All of them were selected at random from 15 livestock farms of Deajeon area in order to determine the hematological values from January to Feburary, 1974. The ranges and mean values of erythrocyte count, hemoglobin in blood, hematocrit value, mean corpuscular volume, mean corpuscular hemoglobin, mean corpuscular hemoglobin concentration, and total and differential leukocyte count were determined. The result obtained in this work were summerized as follows: 1. Ranges and mean values(with standard error) of erythrocyte count, hemoglobin in blood and hematocrit values were 4.90~7.82 and $5.83{\pm}0.12{\times}10^6/mm^3$, 7.8~10.3 and $8.7{\pm}0.11g/100ml$, and 26~38 and $30.2{\pm}0.53$ mI/100 ml, respectively. 2. Mean corpuscular hemoglobin, mean corpuscular volume, and mean corpuscular hemoglobin concentration showed ranges and mean values(with standard error) of 13.2~17.4 and $14.8{\pm}0.22$ pg, 46.0~71.8 and $52.3{\pm}0.31{\mu}m^3$, and 21.6~32.7 and $28.6{\pm}0.47$ g/100 ml, respectively. 3. Total leukocyte count showed a range of 6,300~13,600 and a mean value(with standard error) of $10,035{\pm}346/mm^3$. 4. Ranges and mean values(with standard error) of differential leukocyte counts of total neutrophil were 21~40 and $36.4{\pm}0.7%$, 1,638~4,080 and $3,233{\pm}111/mm^3$, of band neutrophil 0~9 and $3.9{\pm}0.5%$, 0~1,028 and $390{\pm}54/mm^3$, of segmented neutrophil 18~35 and $28.4{\pm}0.7%$, 1,386~3,672 and $2,842{\pm}103/mm^3$, of lymphocyte 46~69 and $55.3{\pm}1.1%$, 3,380~8,976 and $5,535{\pm}263/mm^3$, of monocyte 0~4 and $1.7{\pm}0.2%$, 0~324 and $116{\pm}21/mm^3$, of eosinophil 4~15 and $10.8{\pm}0.6%$, 540~1,725 and $1,082{\pm}72/mm^3$. No basophil was observed in this work.

• Journal of Preventive Medicine and Public Health
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• v.45 no.2
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• pp.105-112
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• 2012

Objectives: Cigarette smoking is a modifiable risk factor for cardiovascular disease. Bilirubin is a potent antioxidant and its concentration decreases in smokers. However, studies about the association between cigarette smoking and bilirubin are scarce and most are limited to total bilirubin. Additionally, bilirubin is highly related to hemoglobin. Therefore, this study evaluates the association between bilirubin subtypes and cigarette smoking in healthy Korean men independently of hemoglobin. Methods: This study included 48 040 Korean men aged 30 to 87 years who visited the Korea Medical Institute for routine health examinations from January to December, 2007. The association of smoking with total, direct, and indirect bilirubin was assessed by logistic regression analysis taking into consideration differences in subjects and smoking characteristics. Results: Current smokers had lower bilirubin concentrations than never-smokers and ex-smokers. Smoking amount and duration were inversely significantly associated with total, direct, and indirect bilirubin. In a multivariable adjusted model, compared to never-smokers, the odds ratios (ORs) and 95% confidence intervals (CIs) of current smokers with the highest number of pack-years were 1.7 (1.6 to 1.9) for total, 1.5 (1.4 to 1.6) for direct, and 1.7 (1.6 to 1.9) for indirect bilirubin. After further adjustment for hemoglobin, this association became stronger (OR [95% CI], 2.1 [1.9 to 2.2] for total; 1.9 [1.8 to 2.0] for direct; 2.0 [1.9 to 2.2] for indirect bilirubin). Conclusions: In this study, bilirubin subtypes are inversely associated with smoking status, smoking amount, and smoking duration in healthy Korean men independently of hemoglobin. Further studies are needed to investigate this association in healthy Korean women.

• Korean Journal of Clinical Laboratory Science
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• v.43 no.1
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• pp.12-18
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• 2011

The purpose of this study was to evaluate the significance of higher than normal mean corpuscular volume (MCV) and lower than normal mean corpuscular hemoglobin concentration (MCHC) in 20 patients. The hemoglobin (Hb), red blood cell indices (MCV, MCH, MCHC,), red cell distribution width (RDW), serum ferritin, serum iron (Fe) and total iron binding capacity (TIBC) were measured and the transferrin saturation were calculated. 18 (90.0%) cases were categorized as chronic diseases. Chronic renal failure, malignancy, and bleeding were all related to the cases. The mean values of hemoglobin was $9.5{\pm}2.14g/dL$; the MCV was $29.0{\pm}2.8fL$; the MCH was $30.9{\pm}1.0pg$; the MCHC was $31.2{\pm}0.5%$; the RDW was $17.0{\pm}3.6%$; serum Fe was $39{\pm}21{\mu}g/dL$; the TIBC was $219.7{\pm}108.8{\mu}g/dL$; transferrin saturation was $19.2{\pm}9.9%$ and ferritin was $445.5{\pm}499.6{\mu}g/L$ in the patients. The WHO criteria for hemoglobin of patients confirms anemia in 18 of the 20 (90.0%) cases. Anemia of chronic disease was shown in 11 (73.3%) cases; acute gastric ulcer with hemorrhage in 1 (6.7%) case; iron deficiency anemia in 1 (6.7%) case; 2 patients (13.3%) were of normal cases. There were changes in the baseline Hb level results of the 19 (95.0%) cases while no change was shown in 1 case. As a result, diseases associated with anemia and bleeding where the MCV is higher than the normal range and MCHC is lower than normal range are considered relevant findings.

• Journal of Periodontal and Implant Science
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• v.46 no.1
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• pp.10-21
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• 2016

Purpose: This study evaluated the predictive performance of a combination of self-report questionnaires, salivary hemoglobin levels, and age as a non-invasive screening method for periodontitis. Methods: The periodontitis status of 202 adults was examined using salivary hemoglobin levels, responses to 10 questions on a self-report questionnaire, and the Community Periodontal Index (CPI). The ability of those two variables and the combination thereof with age to predict the presence of CPI scores of 3-4 and 4 was assessed using logistic regression and receiver operating characteristic (ROC) curve analysis. Results: CPI scores of 3-4 and 4 were present among 79.7% and 46.5% of the sample, respectively. The area under the ROC curves (AUROCs) of salivary hemoglobin levels for predicting prevalence of CPI scores of 3-4 and 4 were 0.63 and 0.67, respectively (with sensitivity values of 71% and 60% and specificity values of 56% and 72%, respectively). Two distinct sets of five questions were associated with CPI scores of 3-4 and 4, with AUROCs of 0.73 and 0.71, sensitivity values of 76% and 66%, and specificity values of 63% and 69%. The combined model incorporating both variables and age showed the best predictive performance, with AUROCs of 0.78 and 0.76, sensitivity values of 71% and 65%, and specificity values of 68% and 77% for CPI scores of 3-4 and 4, respectively. Conclusions: The combination of salivary hemoglobin levels and self-report questionnaires was shown to be a valuable screening method for detecting periodontitis.

• Asian-Australasian Journal of Animal Sciences
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• v.9 no.5
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• pp.597-601
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• 1996

Twelve Philippine does of 3.5-5.0 years old were used in this study. They were divided into three groups, $T_1$, $T_2$ and $T_3$. Four animals were randomly allocated to each group. Before infection, they were dewormed and housed in individual pens with concrete floors. They were provided with a uniform management. They were infected orally with a single dose of three levels (0, 15,000 and 30,000) of infective Haemonchus contortus larvae. Blood samples were collected from the jugular vein of each animal at fortnightly intervals for 17 fortnights. Hemoglobin (Hb) concentration was determined using hemoglobinometer and packed cell volume (PCV) by microhematocrit methods. Animals in infected groups showed significantly (p < 0.05) lower hemoglobin values than the control except during fortnight 1 for group 2 and fortnights 1, 2, 5, 6 and 7 for group 3. Hemoglobin concentration did not significantly (p > 0.05) differ between the animals in infected groups throughout the sampling period except fortnight 2. The PCV values of animals in infected groups were significantly (p < 0.05) lower than the control for most of the sampling periods. The PCV values of animals in group 2 did not significantly (p > 0.05) differ from group 3.

• Journal of Nutrition and Health
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• v.7 no.3
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• pp.1-13
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• 1974

The relative state of human iron storage may be ascertained more reliably through determination of the serum iron, iron binding capacity, transferrin saturation and absorption of radioactive iron in conjunction with studies of red cell morphology than from the study of red cell morphology alone. Recent investigations have shown that there is an increase in red cell protoporphyrin concentration in iron deficiency anemia. The significance of the red cell protoporphyrin has been discussed greatly during the years since its discovery. Two of the main factors which appear to influence the amaunt of protoporphyrin are increased erythropoiesis and factors interfering with the utilization of iron in the synthesis of hemoglobin, and iron deficiency. Recently Heller et al. have described a simplified method for blood protoporphyrin assay and this technique could be used assess nutritional iron status, wherein even minor insufficiencies are detectable as increased protoporphyrin concentrations. Based on the evaluation of the relationship between nutritional iron status and red cell protoporphyrin as an index suitable for the detection of the iron deficiency is described in this paper. RESULTS 1. Hemoglobin Concentrations and Anthropometric Measurements. The mean and standard deviations of the various anthropometric measurements of different age and sex groups are shown in table 1. There measurements have been compared with the Korean Standard. In the absence of local standards for arm circumference and skin-fold thickness over triceps, they have been compared with the standard from Jelliffe. Table 2,3, and 4 give anthropometric measurements and frequency (%) of anemia in children surveyed. The mean height of the children studid was 10 to 20 percent; below the Korean Standard. The distribution of height below 80 percent of the Standard was 21.2 percent, however, among anemic group this percentage was 27.7 percent. In general, the mean weight of the children was 10 to 15 percent below the Korean Standard. The percentage of children with weight less than 80 percent of the Standard was about 35 percent. But in the anemic group of the children, this percentage was 44 percent. The mean arm circumference was about 15 percent lower than the Jelliffe's standard. 61.2 percent of the children had values of arm circumference below 80 percent of the standard. Children with low hemoglobin levels, this percentage was 80 percent. The mean skinfold thickness over the triceps of the children studied was about 25 Percent lower than the Jelliffe's standard and 61.2 percent of the children had the value less than 80 percent of the standard. Among anemic children, this percentage was 70.8%. As may be seen from table 5, the mean hemoglobin concentration of the total group was 11.3g/100ml. Hemoglobin concentration was less than 11.0g/100ml. in 65(36.5%) of the 178 children. The degree of anemia in most of these children was mild with a hemoglobin level of less than 8.0g/100ml. found in only one child. In general, the prevalence of anemia was high in female children than male and decreased its frequency with increasing age. Relatively close relationship was observed between hemoglobin level and anthrophometric measurements especially high between arm circumference and skinfold thickness and hemoglobin but very low in height and low in weight and hemoglobin level, estimated by chi-square value. II. Serum iron, Transferrin saturation (1) Serum iron, and transferrin saturation Serum iron, transferrin saturation and red cell protoporphyrin concentrations were estimated in sub-sample of 84 children from 1 to 6 years and 24 older children between 7 and 13 years of age. The findings are presented in table 6. The mean serum iron concentration of the total group was 59ug/100ml. However, the level incrased with age from 36.6ug/100ml. (1-3years) to 80.8ug/100ml. (7-13 years). 60 percent of these children had a serum iron level less than 50ug/10ml. in the 1-3 years age group and 31.4 percent for 4-6 years group. These contrast with the finding of 12.5 percent anemic children in the 7-13 years age group. The mean transferrin saturation for the total group was 18.1 percent and frequency of anemia by transferrin saturation was observed same pattern as serum iron concentration. (2) Red cell protoporphyrin concentrations. (a) Red cell protoporphrin levels of children: Red cell protoporphyrin and other biochemical data are shown in table 4. The mean concentration in red cell of all children was fround 46.3ug/100ml. RBC. and differences with age groups were observed; in the age group 1-3 years, the mean concentration was $59.5{\pm}32.14$ ug/100ml. RBC; 4-6 years $44.1{\pm}22.57$ ug/100ml. RBC. and 7-13 years, $39.0{\pm}13.56$ ug/100ml. RBC. (b) Normal protoporphyrin values in adults: It was observed that in 10 normal adult males studied here the level of protoporphyrin in red cell ranged from 18 to 54 ug/100ml. RBC. and the mean concentration was $47.5{\sim}14.47$ ug/100ml. RBC. Other biochemical determination made on the same subjects are presented in table 8. (c) Red tell protoporphyrin concentration of occupational blood donors: The results of analyses for red cell protoporphyrin as well as serum iron, transferrin saturation and hemoglobin in the 76 blood donors are presented in table 7 and 8. In this experiment, donors were selected at random, however, most of them bled repeatedly because of poor economic situation, I doubt. Table 9 shows the distribution of red cell protoporphyrin concentration and hemoglobin concentration of occupational donors. The mean hemoglobin value for the total was 11.9 g/100 ml. When iron deficiency anemia is defined as a transferrin saturation below 15%, prevalence of anemia was 47.4 percent and the mean serum iron was 27.1ug/100ml. and red cell protoporphyrin, 168.3ug/100ml. RBC. However, mean serum iron and protoporphyrin concentration of above 15% transferrin saturation were 11.6 ug/100 ml. and 58.8 ug/100 ml. RBC. respectively. The mean Protoporphyrin concentration of non-anemic (above 15% transferrin saturation) donors was slightly higher than the results of normal adult males.

• Bulletin of the Korean Chemical Society
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• v.26 no.1
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• pp.151-156
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• 2005

The conformational dynamics of heme pocket, a small vacant site near the binding site of heme proteins -myoglobin (Mb) and hemoglobin (Hb), was investigated after photolysis of carbon monoxide from MbCO and HbCO in D$_2$O solution at 283 K by probing time-resolved vibrational spectra of photolyzed CO. Two absorption bands, arising from CO in the heme pocket, evolve nonexponentially in time. The band at higher energy side blue shifts and broadens with time and the one at lower energy side narrows significantly with a negligible shift. These spectral evolutions are induced by protein conformational changes following photolysis that modify structure and electric field of heme pocket, and ligand dynamics in it. The conformational changes affecting the spectrum of photolyzed CO in heme pocket likely modulates ligand-binding activity.

• Proceedings of the Korean Environmental Health Society Conference
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• 2004.06a
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• pp.169-172
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• 2004

A gas chromatography/mass spectrometric assay method was developed for the determination of propylene oxide adduct, N-(3-hydroxypropyl)valine. Adduct was released from hemoglobin by alkaline hydrolysis and extract at pH 8 with ethyl ether. The dried extract was completely derivatized with N-Methyl-N-(trimethylsilyl) trifluoroacetamide (MSTFA)/TMS-I (100:3). The detection limits of the assay were 0.08 ng/g for N-(3-hydroxypropyl)valine based upon assayed hemoglobin of 0.1 g. The method was applied to the determination of propylene oxide adduct formed in young female Sprague-Dawley rats after treatment for 1, 2 and 3 weeks with 0.008 % propylene oxide via the drinking water. An adduct was detected by proposed procedure. The structure of the adduct could be assigned to N-(3-hydroxypropyl)valine.

• Korean Journal of Clinical Pharmacy
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• v.24 no.3
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• pp.206-212
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• 2014

Objectives: This was to evaluate the current usage of three erythropoietin stimulating agents (ESA) and their efficacy for management of anemia in peritoneal dialysis (PD) patients with chronic kidney disease. Methods: It was a retrospective comparative study through review of electronic medical records of chronic kidney disease patients undergoing PD at a tertiary teaching hospital from January 1998 to June 2013. Results: Average administration frequency was 1.66 times/week in EPO group, 0.75 times/week in DA group, and 0.19 times/week in MPG-EPO group. At the first 4 weeks, there were significant differences in mean hemoglobin levels between EPO and DA groups ($9.25{\pm}1.28g/dL$, $10.02{\pm}0.95g/dL$ each, p = 0.018) and also in hemoglobin response rates (10.0%, 45.2% each, p = 0.008), but since after 4 week, there had been no significant differences. There also showed no significant differences in achievement of hemoglobin target between the two groups. When converted to MPG-EPO in EPO/DA groups, there showed a slight increase in hemoglobin levels of both groups. MPG-EPO was the highest compared with two other drugs by the average cost based on the average weekly dose. Conclusion: EPO, DA, and MPG-EPO showed similar effects in treatment of anemia of PD patients based on hemoglobin target range (11.0~12.0 g/dL) which NFK-K/DOQI guidelines suggest. Though the average cost of MPG-EPO was higher than the other two drugs, the number of PD patients using MPG-EPO has increased and it is thought that long half-life and low administration frequency of MPG-EPO have improved the compliance of PD patients who have to self-administrate.