• 분석과학
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• 제36권6호
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• pp.332-339
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• 2023

Urea는 혈액의 hemoglobin을 변성시켜 효소 활성 자리를 노출시킴으로써 혈액-luminol 반응의 화학발광 세기를 향상시킨다는 가설을 검증하고자 하였다. 이를 위해 혈액을 urea로 전처리한 경우 urea의 농도가 더 높아지거나 전처리 시간이 늘어날수록 혈액-luminol 반응의 화학발광 세기가 증가하였고 이는 기존의 가설과 부합되는 결과였다. 하지만 8 M urea용액을 미리 혼합하여 제조한 luminol로 혈액을 처리하면 혈액을 urea로 미리 전처리한 경우에 비해 urea가 hemoglobin을 변성시키는 시간이 짧아짐에도 화학발광 세기가 오히려 증가하는 현상이 나타났다. 또한 hemoglobin이 없는 전이금속을 urea가 포함된 luminol과 반응시켰을 때 화학발광이 강해지는 현상이 관찰되었다. 이러한 점으로 미루어 볼 때 urea는 hemoglobin을 변성시킬 뿐만 아니라 luminol-hydrogen peroxide 반응에도 관여하는 것으로 예상된다.

• 한국환경농학회지
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• 제39권2호
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• pp.89-94
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• 2020

BACKGROUND: Persistent organic contaminants such as dichlorodiphenyltrichloroethane (DDT) are often found in agricultural soils decades after it was banned in Korea. This study uses hemoglobin and hemoglobin-containing blood meal to reduce the residual DDT in soil. METHODS AND RESULTS: Hemoglobin or blood meal with or without hydrogen peroxide (H₂O₂) was mixed with the DDT-spiked soil prepared for this study, and samples were taken over 14 d-degradation period to measure the residual DDT concentrations. With only hemoglobin, DDT was completely removed after 14 d, while with both hemoglobin and H₂O₂, 73%, on average, removal was observed. Similarly, the blood meal removed 73% of DDT, but with H₂O₂, the DDT removal was only 39%. The lower DDT removal in the presence of H₂O₂ can be attributed to the adverse effects of reactive species. Hemoglobin was more effective than blood meal for DDT removal in a given time; however, with additional blood meal injection, complete DDT removal was achieved. CONCLUSION: Overall, this study shows that the blood meal that is used as a fertilizer can potentially be used to remove residual contaminants such as DDT in agricultural soil.

• International journal of advanced smart convergence
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• 제9권4호
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• pp.8-15
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• 2020

This study was conducted in order to determine the effect of intraoperative hemoglobin changes on intraoperative neuromonitoring (IONM). This was a retrospective study that included 339 participants who underwent cerebrovascular surgery. We compared anesthetic agents, intraoperative hemoglobin, hematocrit, blood transfusion, and blood loss. We examined motor evoked potential and sensory evoked potential to patients. There were significant differences in hemoglobin changes, bleeding levels, transfusion, anesthesia time, and postoperative mobility disorders. Moreover, compared with patients who received transfusions, those who did not receive transfusion had a lower average hemoglobin level, as well as a higher bleeding amount, and a need of higher anesthesia time and anesthetic dose. Also, we found vasospasm occurred while surgery can bring adverse results after operation. This study showed that an intraoperative decrease in hemoglobin levels affects the function of cerebral perfusion, which could result in abnormal nerve monitoring results. However, as this study could not find a relation of anesthetics to IONM, there is a need for further research regarding the association between anesthetics and hemoglobin changes and IONM.

• 대한수의학회지
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• 제14권1호
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• pp.1-7
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• 1974

Little work has been done on the changes in the blood picture occurring at different ages in cattle. In our country Kim (1963) and Jeong (1965) recorded the blood picture of mature Korean native cattle and, recently, Mun et al. (1974) has recorded the blood picture of Holstein cows. And a comprehensive survey of the blood picture of Korean native cattle has not been made. The object of the present investigation was to make good this deficiency, and to suggest standards for the blood picture of Korean native cattle at frequent intervals from birth to maturity. The cattle were kept under average farming conditions in this country. Observations were made at the following ages: at birth; 1, 2 and 4 days; 1, 2 and 4 weeks; 2,4,6 and 9 months; 1, 2 and 3 years of age. Blood samples were drawn from the jugular vein. Erythrocyte enumerations, concentration of hemoglobin in blood and hematocrit values were made in usual manner. Erythrocyte counts increased from $8{\times}10^6/mm^3$ during the first week to a level of $10{\times}10^6/mm^3$ at 2 months of age, showing steady state untill 6 months of age; it then fell to adult level ($8{\times}10^6/mm^3$) at 9 months of age. Concentration of hemoglobin in blood and hematocrit values were closely related to the changes of erythrocyte counts. The values increased from 10 g/100 ml and 31~35 ml/100 ml during the early life to 11 g/100 ml and 38 ml/100 ml at 2 months of age, showing steady state untill 6 months of age; these then fell to adult level (10 g/100 ml and 31~34 ml/100 ml) at 9 months of age for concentration of hemoglobin in blood and hematocrit values, respectively. Mean corpuscular volume and mean corpuscular hemoglobin showed a common pattern. The values were $42{\sim}43{\mu}m^3$ and 12.4 pg during the early life and fell a little to 6~9 months of age; these then increased to reach adult levels of $43{\mu}m^3$ and 12.6 pg for mean corpuscular volume and mean corpuscular hemoglobin, respectively. Mean corpuscular hemoglobin concentration was little affected with age.

• 약학회지
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• 제47권6호
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• pp.422-431
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• 2003

The use of recombinant human erythropoietin (rhEPO), a stimulator of erythropoiesis, banned in sports because of the medical risk associated with thrombosis. Due to analytical difficulties to differentiate between natural human EPO (hEPO) and rhEPO, blood parameters of erythropoiesis such as contents of hemoglobin (cut-off value <17.5 g/d l for man, and < 16.0 g/dl for women), hematocrit and reticulocytes (cut-off value <2.0%) were measured to focus the misuse of rhEPO. We conducted anti-doping test for 122 blood samples of the World Cup athletes. The mean values of key parameters are as follows; 14.5$\pm$1.0 g/dl for hemoglobin, 41.7$\pm$2.8% for hematocrit, and 1.3$\pm$0.4% for reticulocyte. Blood sample was found to be stable up to 8 hours for the reticulocyte measurement. In addition, the soluble transferrin receptor and ferritin levels were measured by immunoassay methods using plasma samples (n=28) in which the mean value was 0.8$\pm$0.5 $\mu\textrm{g}$/$m\ell$ and 54.6$\pm$33.7 ng/$m\ell$, respectively. The results indicate that all samples tested were negative for the blood parameters of indirect anti-doping test for hEPO misuse. The statistical evaluation suggest that several other parameters such as red blood cell, mean corpuscular hemoglobin concentration, mean corpuscular volume, mean corpuscular hemoglobin and white blood cell could be considered as factors influencing hEPO function in addition to five parameters mentioned.

• BMB Reports
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• 제29권3호
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• pp.261-265
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• 1996

Sheep hemoglobin (SHb) was modified with methoxy-polyethylene glycol (mPEG) to develop a potential blood substitute. mPEG has been used to decrease antigenicity and immunogenicity of foreign proteins. When the mPEG was attached to SHb, the modified hemoglobins showed decreased electrophoretic mobility on SDS-PAGE and decreased free amino groups. When the remaining free amino groups of mPEG modified SHb were determined by TNBS free amino group titration methods. about 34% of total free amino groups were modified with mPEG. This mPEG-SHb conjugate of 34% amino groups modified showed no precipitation by double immunodiffusion with polyclonal antibodies against SHb. This modified hemoglobin still has oxygen transport activity. So this antigenicity decreased hemoglobin may be used in humans as a potential blood substitute.

• 대한수의학회지
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• 제14권2호
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• pp.179-184
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• 1974

The blood picture of 85 healthy race horses in Korea was investigated. The ranges and mean values of erythrocyte, hemoglobin, hematocrit value, mean corpuscular volume, mean corpuscular hemoglobin concentration, and total white blood cell count in the blood picture were determine. The respective mean value and standard deviation and age differences were as follows: 1. The erythrobyte count was shown as range of 6.20 to $11.32{\times}10^6/mm^3$ with mean of $8.61{\pm}1.92{\times}10^6/mm^3$(SD). The leucocyte count was shown as range 5.0 to $18.0{\times}10^3/mm^3$ with mean of $8.25{\pm}1.51{\times}10^3/mm^3$(SD). There were not significant. differences in age, 2. The mean value of hemoglobin was shown $13.9{\pm}1.7g/100ml(SD)$ ranging 9.8 to 16.8g/100ml. The mean value of hematocrit was shown $40.9{\pm}3.94ml/100ml(SD)$ ranging 26 to 54. There were not significant differences in age. 3. The mean corpuscular hemoglobin was shown as range of 11.8 to 22.2pg with mean of $16.9{\pm}4.69$(SD). The mean corpuscular volume was shown as range of 34.5 to $71.3cu{\mu}$ with mean of $49.0{\pm}7.32cu{\mu}$(SD). The mean corpuscular hemoglobin concentration was shown as range of 30.6 to 39.4 g/100 ml with mean of $34.6{\pm}2.36$(SD). There were not significant differences in age. 4. The correlation among erythrocyte count, hemoglobin and hematocrit value were observed as follows: Erythrocyte count and hemoglobin (+0.328), rythrocyte count and hematocrit vague (+0.319). A linear regression equation was shown as follows: Erythrocyte count and hemoglobin (Y=0.336x+10.977), erythrocyte count and hematocrit value (Y=0.655x+35.274). 5. The high correlation between hemoglobin and hematocrit vague was observed (r= +0.836). A linear regression equation was shown: (Y=1.948x+13.895).

• 대한약리학회지
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• 제2권1호
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• pp.49-69
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• 1966

For the purpose of stydying the pharmacodynamic action of methemoglobin, the author made the following experiments: 1. Preparation of hemoglobin and methemoglobin solutions: Red cell suspension from rabbit blood was hemolysed with distilled water and then divided into two portions. One portion was dialysed through cellophane paper and made isotonic with the proper amount of sodium chloride. The second portion was treated with sodium nitrite to convert hemoglobin to methemoglobin, dialysed through cellophane paper and made isotonic. 2. The concentration of methemoglobin in solution, plasma and urine was determined by Horecker and Brackette's method, and that of hemoglobin by the cyanmethemoglobin method. 3. The concentration of methemoglobin and hemoglobin in the plasma and urine of rabbits was measured at several intervals of time after infusion of the above samples. 4. The blood pressure and respiration of rabbits were recorded on a kymograph, and the effects of the samples on them were observed. 5. The effects of the samples on the movements of the in-situ heart and the isolated intestine of rabbits were studied. 6. The kidneys of rabbits were excised 4 to 5 hours after injection of the samples, and histopathological examinations were made. These experiments revealed the following results: 1. When methemoglobin solution was allowed to stand in room air, there was no decrease in the concentration of methemoglobin. 2. When methemoglobin solution was mixed with whole blood and incubated at $37^{\circ}C$, the concentration of methemoglobin decteased gradually. 3. After the infusion of methemoglobin and hemoglobin solutions, the rate of disappearance of methemoglobin in the plasma was more rapid than that of hemoglobin in the plasma. The higher the initial concentration in the plasma, the larger was the rate of disappearance of methemoglobin. 4. The rate of disappearance of methemoglobin was exceedingly rapid for 30 minutes after the infusion. 5. The urinary excretion of methemoglobin was more rapid than that of hemoglobin. 6. It would seem that the circulating blood contains substances which are promptly mobilized in the plasma to reduce methemoglobin to hemoglobin. 7. Moderate amounts of methemoglobin solution caused some rise in the blood pressure and a transient acceleration of the respiration of the rabbits. These effects of methemoglobin were milder than those of hemoglobin. 8. The movements of the in-situ heart and the isolated intestine of rabbits were accelerated by methemoglobin. These accelerating effects were milder than those of hemoglobin. 9. In the kidneys of rabbits treated with methemoglobin solution, hyperemia of the glomeruli, cloudy swelling and hemoglobin deposit in the tubular epithelium, hemoglobin casts in the tubular lumina of the proximal tubules, and interstitial congestion were constantly observed. There was no definite difference between the histological findings in the rabbit kidneys injected with methemoglobin, and those injected with hemoglobin solutions.

• 대한본초학회지
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• 제35권4호
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• pp.1-8
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• 2020

Objectives : Angelicae gigas, A. sinensis and A. acutiloba are three types of plants used as Angelicae Radix (Dang-Gui). Many doctors of Korean medicine want to know the difference in clinical use of these three species. This study aimed to compare the hemoglobin-related activity of the extracts of Angelicae gigas, A. sinensis and A. acutiloba roots by measuring the intensity of binding oxygen to hemoglobin using Raman spectroscopy. Methods : Hemoglobin activity was measured by chemical analysis and Raman spectroscopy to compare the pharmaceutical efficacy of three Angelica root extracts. The oxygenated hemoglobin intensity, blood decursinol and acetylcholinestrase(AChE) concentration in mice were measured. In addition, the effects of three Angelica root extracts on oxygenated hemoglobin intensity, decursinol and AChE concentration in red blood cells (RBC) from human were also investigated. Results : The contents of decursin, decursinol and decursinol angelate, which affected physiological activity and RBC properties, were higher in the extract of A. gigas root than in those of A. sinensis and A. acutiloba roots. Moreover, oxygenated hemoglobin intensity in the A. gigas extract was higher than that of other two species in the blood of mice and human RBCs. Also, the blood decursinol and AChE concentrations of A. gigas root extract were higher than that of A. sinensis and A. acutiloba roots. Conclusions : These results suggest that A. gigas is more effective in treating disease related oxygen deficiency in RBC deformation under oxidative stress.

• Journal of Nutrition and Health
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• 제32권7호
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• pp.793-801
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• 1999

The purposes of this study are to assess iron status in mothers and their newborn infants at birth and to analyze the influence of maternal iron status on their newborn babies. Venous bloods samples were drawn from 144 pregnant women just before delivery and cord bloods of their newborn babies were collected immediately after birth for measurement of hemoglobin, hematocrit, serum iron, ferritin, total binding capacity and transferrin saturation. The values of hemoglobin and hematocrit were significantly lower in the mothers(10.9$\pm$1.43g/dl and 33.7$\pm$3.67%) than in their newborn infants(14.7$\pm$1.43g/dl and 45.3$\pm$4.76%)(p<0.0001). At delivery, serum iron levels in cord blood were about twice as high as those in the maternal blood, and serum ferritin levels in the cord blood were about four times higher than those in the maternal blood. The serum ferritin levels of multigravidas were higher than those of primigravidas,. but there was no difference between the serum ferritin levels of their infants. The serum ferritin levels of the mothers and their infants were higher in maternal group with iron supplement regularly than in other maternal group without iron supplement during pregnancy. Among the mothers, 26.4% had a serum ferritin levels below 12ng/ml(i.e. depleted iron stores)and 78.9% had a hemoglobin below 12g/dl(i.e.iron deficient anemia). When the maternal group was classified according to their serum ferritin levels by 9ng/ml, 12ng/dl or 20ng/ml, there was no significant difference in the iron status of their newborn infants among the three groups. The hemoglobin and serum ferritin levels of the mothers were well correlated with those of their babies. The maternal hemoglobin values negatively correlated with infant birth weight. It is possible that the demands of iron of the mother might be increased in the case of a newborn infant of greater size. The results of this study provide useful information regarding establishment of RDA for iron in pregnant women and guidance about the need for iron supplement during pregnancy.