• Title/Summary/Keyword: Erythrocyte

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Field Case of Babesiasis in Korean Native Cattle (한우(韓牛)에서의 Babesia병(病)의 자연발생례(自然發生例)에 대하여)

  • Lee, Hyun Beom;Choi, Won Pil
    • Korean Journal of Veterinary Research
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    • v.16 no.2
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    • pp.173-177
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    • 1976
  • The authors encountered a case of Babesiasis in Korean native cative cattle at Gyeongbug prefecture. After the clinicohematological observation the patient was treated a single dose of ganaseg and the following results were obtained. 1. Initial symptoms observed were high fever, anorexia, depression and cessation of rumination and these were followed by marked hemoglobinuria and mild degree of icterus. 2. The erythrocyte count decreased to $3.6{\times}10^6/mm^3$ and the infected erythrocyte rates were 9.7 percent with Babesia sp. and 0.2 percent with Theileria sp. 3. Marked increase in band neutrophil was observed. 4. The morphology of the protozoa in erythrocytes was different from that of so-called large-type Piroplasma: various forms including paired pear-shaped, single round, oval and pear-orspindle-shaped were detected, of which the former two forms were dominant. 5. A single dose of ganaseg administered intramuscularly was highly effective for the treatment of Babesiasis.

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Functional Molecular Structure of Band 4.5 Protein of Human Erythrocyte Membrane (인체 적혈구막 Band 4.5 단백질의 기능적인 분자구조)

  • Hah, Jong-Sik
    • The Korean Journal of Physiology
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    • v.20 no.2
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    • pp.209-217
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    • 1986
  • The functional molecular weight of band 4.5 polypeptide was measured by applying the classical target theory to radiation inactivation data of the cytochalasin B binding. Band 4.5 polypeptides purified from human erythrocyte membranes were irradiated at -45 to $-50^{\circ}C$ with an increasing dose of 1.5 MeV electron beam, and after thawing, cytochalasin B binding activities were assayed. Each activity measured was reduced as a simple exponential function of radiation dose. $D_{37}$, dose appeared to be 6.7 mega rads, from which the target size (radiation sensitive mass) of band 4.5 polypeptide was calculated to be 95,500 daltons. This result with other informations available in literature suggests that band 4.5 polypeptide may exist as a dimer in human erythrocytes.

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Fenugreek seed polyphenols inhibit RBC membrane Na+/K+-ATPase activity

  • Anuradha, Carani V.;Kaviarasan, Subramanian;Vijayalakshmi, Kodali
    • Advances in Traditional Medicine
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    • v.3 no.3
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    • pp.129-132
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    • 2003
  • The hypoglycemic and hypolipidaemic effects of fenugreek seeds (Trigonella foenum graecum) are well established. Owing to the wide spread use of the seeds by healthy individuals and by diabetic patients we wanted to test whether the seeds can affect biological systems such as membrane transport function. In the present study fenugreek seed polyphenols were extracted and their effect on erythrocyte membrane-bound sodium-potassium adenosine triphosphatase $(Na^+/K^+-ATPase)$ activity was studied in vitro. Fenugreek seed polyphenols inhibited $Na^+/K^+-ATPase$ in erythrocyte membrane of diabetic and normal subjects. Maximum inhibition was observed at $100\;{\mu}l$ of extract containing 0.75 mM gallic acid equivalents. The uncoupling of membrane ATPases in vitro suggest that polyphenols from fenugreek seeds may possess a positive inotropic effect.

Antilipidperoxidative activity of Astragalus membranaceus (황기의 지질과산화 억제작용)

  • Kim Eun-Jung;Yang Ki-Sook
    • YAKHAK HOEJI
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    • v.49 no.1
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    • pp.11-19
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    • 2005
  • The root of Astragalus membranaceus (Leguminosae) has been used in traditional chinese prescriptions for strengthning the superficial resistance, promoting pus discharge and tissue regeneration, diuretis and alleviating edema. Lipid peroxidation has been suggested as a major cause of atherosclerosis, cancer, liver disease, and the aging process. In order to investigate the anti-lipid peroxidation activity, Astragali Radix was extracted with $80\%$ MeOH and fractionated with hexane, $CH_{2}Cl_2$, EtOAc, BuOH and Water. The antilipid peroxidation activities of them were determined by human erythrocyte ghost and $CCl_4$-induced lipid peroxidation. $CH_{2}Cl_2$ and EtOAc fractions, especially, isoflavonoids, 7,2'-dihydroxy-3',4'-dimethoxyisoflavan-7-O-${\beta}$-D-glucoside and calyco sin-7-O-${\beta}$-D-glucoside from EtOAc fraction showed anti-lipid peroxidation activities.

Forecasting of erythrocyte sedimentation rate using gated recurrent unit (GRU) neural network (Gated recurrent unit (GRU) 신경망을 이용한 적혈구 침강속도 예측)

  • Lee, Jaejin;Hong, Hyeonji;Song, Jae Min;Yeom, Eunseop
    • Journal of the Korean Society of Visualization
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    • v.19 no.1
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    • pp.57-61
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    • 2021
  • In order to determine erythrocyte sedimentation rate (ESR) indicating acute phase inflammation, a Westergren method has been widely used because it is cheap and easy to be implemented. However, the Westergren method requires quite a long time for 1 hour. In this study, a gated recurrent unit (GRU) neural network was used to reduce measurement time of ESR evaluation. The sedimentation sequences of the erythrocytes were acquired by the camera and data processed through image processing were used as an input data into the neural network models. The performance of a proposed models was evaluated based on mean absolute error. The results show that GRU model provides best accurate prediction than others within 30 minutes.

Study on Local Irritation in Rabbits and Micronucleus Test in Mice with YHB216 (YHB216의 토끼에서 국소독성시험 및 마우스에서 소핵시험)

  • 강민정;김미영;박명규;김봉태;안경규;최연식;문병석;이종욱
    • Toxicological Research
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    • v.18 no.1
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    • pp.79-85
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    • 2002
  • YHB216 is one of new recombinant human erythropoietins (rHu-EPO) developed by Yuhan Research Institute. The rHu-EPO products are widely being used for the treatment of various types of anemia. As a series of safety studies on YHB216, we performed the local irritation test (dermal & ocular application) in male New Zealand White rabbits and micronucleus test in male ICR mice. In the skin irritation test, 0.5 ml of YHB216 10,000 IU/ml solution was applied to the back skin of rabbits for 24 hours and sub-sequent observation was performed. There was no induced response after the treatment and the primary irritation index (P.I.I.) was‘0’. In the eye irritation test, 0.1 ml of YHB216 10,000 IU/mL solution was instilled into the conjunctiva of the eye. No treatment-related reaction was observed at the cornea, iris, and conjunctiva. In the micronucleus test, YHB216 was administered intravenously to male mice (6 mice per group) at dose levels of 0, 6,250, 12,500, and 25,000 IU/kg. Bone marrow cells were collected at 24 hours after the treatment. YHB216 treated groups showed no significant difference in the P/N (polychromatic erythrocyte/ normochromatic erythrocyte) ratio and in the number of micronucleated polychromatic erythrocyte com-pared with the control. In conclusion, YHB216 was found to be a non-irritating material up to 10,000 IU/ml in the local irritation test and to be a non-mutagen up to 25,000 IU/kg in the micronucleus test.

Indirect calculation for volume of packed red cell(VPRC) by means of erythrocyte sedimentation rate (ESR) of blood diluted with isotonic dextrose solution in cattle (소에 있어서 등장 dextrose액으로 희석한 혈액의 적혈구 침강율(ESR) 측정에 의한 적혈구 침층용적(VPRC)치의 간접계산법)

  • Lee, Bang-whan;Bahk, Young-woo;Min, Byeong-man
    • Korean Journal of Veterinary Research
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    • v.30 no.1
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    • pp.107-112
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    • 1990
  • The purpose of this study is to derive indirect values of volume of packed red cell(VPRC), without centrifugation, from erythrocyte sedimentation rate(ESR) of blood diluted with isotonic dextrose solution in cattle. Each of ten blood samples taken from apprently healthy Korean cows and Holstein cows was used to produce eight different mixture of autologous plasma and blood corpuscles such that their values of VPRC lay between 15 to 50ml/100ml, and then each of the blood mixture was again diluted with 5% dextrose solution. The measurements of ESR using 45 degree-angled capillary hematocrit tube, 1.1~1.2mm bore, ($45^{\circ}$-micro-ESR) were practised for the diluted blood of various levels of VPRC under the ambient temperature of $10^{\circ}$, $20^{\circ}$ and $30^{\circ}C$. Reliable values of VPRC on the basis of the correlating linear regressive equation to the ESR could be derived from the values of $45^{\circ}$-micro-ESR/hr in the mixture of one part of whole blood and one part of 5% dextrose solution(1:1). For an aid of practical use, authors suggested a list of the $45^{\circ}$-micro-ESR/hr values of the diluted blood equivalent to VPRC of whole blood.

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