• 대한임상검사과학회지
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• 제38권3호
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• pp.147-151
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• 2006

Although various automated CBC analyzers with different WBC analytical principles were consequently introduced to clinical laboratory, the specific information concerning the suitability or unsuitability of aging samples is scarce. For this reason, we studied the effect of storage duration and temperature on CBC parameter in SE-9000 (SYSMEX Medical Electronics Co., Ltd., Kobe, Japan), automated CBC analyzer. We tested 32 K3-EDTA specimens with SE-9000 during 72 hours. Specimens were kept at room temperature (RT) and refrigerated and were analyzed at 0 hr, 4 hr, 8 hr, 24 hr, 48 hr and 72 hr after the collection of the specimens. The percentage changes from initial value for each parameters were calculated. Among the CBC parameters, hemoglobin, red blood cell count, mean corpuscular hemoglobin and platelets were stable for the study period at both temperatures. The mean corpuscular volume (MCV), hematocrit (Hct) and red cell distribution (RDW) increased and the mean corpuscular hemoglobin concentration (MCHC) decreased over time at room temperature. These parameters were stable when refrigerated. The leukocyte count was stable during 72hr at RT and when refrigerated. At room temperature, the relative percentages of neutrophils tend to increase, whereas those of lymphocyte and monocytes tend to decrease after 48 hours. When refrigerated, those of neutrophils and monocytes tend to increase, whereas those of lymphocytes tend to decreased over time. CBC parameters of refrigerated specimen were reliable for 72 hr for the exception of differential count from 24 hr but many CBC parameters, such as MCV, Hct, MCHC, RDW and differential count of leukocyte of blood stored at room temperature for 24 hr were unreliable.

• Asian-Australasian Journal of Animal Sciences
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• 제15권9호
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• pp.1348-1353
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• 2002

The purpose of this study was to evaluate the changes and readjustment capacity in the hematological characteristics of the horse during and after a prolonged training program. One pony and two hot-blooded horses were used in this study. Resting or basal blood parameters were assessed by collecting blood samples of the animals for 1 to 2 months prior to start of the training program. Each animal was subjected to arbitrary exercise for 30 min by an automatic hot trotter and was bled at 0, 15, 30, 45 (15 min of recovery), 60 (30 min of recovery), and 75 min (45 min of recovery) after onset of exercise. All animals were exercised 3 times a week over a fivemonth period. Hematological parameters including average white blood cell counts (WBC, ${\times}$$10^3$/$\mu$l), erythrocyte concentrations (RBC, ${\times}$$10^6$/$\mu$l), hematocrit (HCT, %), mean corpuscular volume (MCV, fl), number of platelets (PLT, ${\times}$$10^4$/$\mu$l), hemoglobin concentration (Hb, g/dl), mean corpuscular hemoglobin (MCH, pg), and mean corpuscular hemoglobin concentration (MCHC, g/dl) were analyzed using an automatic cell counter. All animals showed that RBC, WBC, and HCT were significantly (p<0.05) increasing from 7.09, 8.55, and 43.5 to 8.11, 9.67, and 49.5, respectively, during the 30 min of exercise and were back to or lower than the initial basis (resting and 0 min) 30 min after exercise. However, no significant differences were detected in MCV (50.3-51.3 fl), MCH (17.2-17.4 pg), and MCHC (33.7-34.4 g/dl) values (p>0.05) regardless of the training periods. Similar trends were observed after 1, 3, 4, and 5 months of training when compared to the resting state. When these parameters were analyzed by the effect of training periods (month), mean WBC concentrations significantly reduced in the fourth and fifth month after onset of training compared to that in resting condition or the first month of training program (p<0.05). The RBC values elevated at the second month (9.40) and reaching a significantly low level (p<0.001) at the fifth month (8.62) after training compared to the first month of training (7.89). In conclusion, a mild training program enhances blood parameters gradually in both the horse and the pony. Therefore, an optimized training program is beneficial in promoting the endurance performance of the horse.

• 대한수혈학회지
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• 제29권3호
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• pp.282-290
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• 2018

배경: CDe 표현형 환자에서 수혈에 의해 항-E 또는 항-E/-c 항체가 생길 수 있다. CDe 표현형 환자에서 항-E 또는 항-E/-c 항체의 생성에 따른 특성의 차이를 조사해 보고자 하였다. 방법: 2014년에 실시된 비예기항체 동정 검사결과를 후향적으로 검토하였다. Rh 표현형과 항체 특이성을 조사하였고, CDe 표현형 환자의 수혈 및 의무 기록을 조사 하였다. 결과: 총 76명의 환자가 포함되었다. 76명의 환자 중 38명(50.0%)이 CDe 표현형이었다. 항-E 항체 양성군은 23명(60.5%)이었고, 항-E/-c 양성군은 9명(23.7%) 이었다. 총 수혈 단위와 혈소판 수혈 단위는 항-E/-c 항체 양성군에서 유의하게 높았다(P=0.028, P=0.01). 분류된 질병군의 분포는 항-E 및 항-E/-c 항체 양성군간에 차이가 없었다. 수혈의 빈도가 4회 이상을 차지하는 비율은 간담도계 질환 환자군에서 85.7%로 가장 높았다. 결론: CDe 표현형 환자에서 항-E 양성군보다 항-E/-c 양성군에서 혈소판 수혈이 의미 있게 높아 적혈구 동종면역에 혈소판의 역할이 있음을 알 수 있었다. 한국인에서 E 항원 면역원성이 가장 높기 때문에 CDe 표현형 환자들에게 E 항원과 c 항원 음성 혈액의 수혈이 요구되는 질환군을 향 후 정의할 필요가 있다.

• Archives of Pharmacal Research
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• 제28권1호
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• pp.61-67
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• 2005

We evaluated the antiplatelet effects of two classes of ATP-sensitive potassium channel openers $(K_{ATP}\;openers)$ on washed human platelets, and the study's emphasis was on the role of mitochondrial $K_{ATP}$ in platelet aggregation. Collagen-induced platelet aggregation was inhibited in a dose dependent manner by lemakalim and SKP-450, which are potent cardio-nonselective $K_{ATP}$ openers, and also by cardioselective BMS-180448 and BMS-191095 $(IC_{50}\;:\;1,130,\;>\;1,500,\;305.3\;and\;63.9\;{\mu}M,\;respectively)$, but a significantly greater potency was noted for the cardioselective $K_{ATP}$ openers. The latter two $K_{ATP}$ openers also inhibited platelet aggregation induced by thrombin, another important blood-borne platelet activator, with similar rank order of potency $(IC_{50}\;:\;498.0\;and\;104.8{\mu}M\; for\;BMS-180448\;and\;BMS-191095,\;respectively)$. The inhibitory effects of BMS-191095 on collagen-induced platelet aggregation were significantly blocked by a 30-min pretreatment of platelets with glyburide $(1{\mu}M)$ or sodium 5-hydroxyde­canoate$(5-HD,\;100{\mu}M)$, a nonselective and selective mitochondrial $K_{ATP}$ antagonist, respectively, at similar magnitudes; this indicates the role of mitochondrial $K_{ATP}$ in the antiplatelet activity of BMS-191095. However, glyburide and 5-HD had no effect when they were added to the platelet cuvette immediately prior to the addition of BMS-191095. These findings indicate that cardioselective mitochondrial $K_{ATP}$ openers like BMS-191095 are able to exert cardioprotective effects in cardiac ischemia/reperfusion injury via dual mechanisms directed at the inhibition of platelet aggregation and the protection of cardiomyocytes, and both these mechanisms are mediated by mitochondrial$K_{ATP}$.

• Toxicological Research
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• 제23권4호
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• pp.353-362
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• 2007

Deoxynivalenol (DON) is a common food borne mycotoxin and occurs predominantly in grains such as wheat, barley, oats, etc. DON induces systemic health problems such as loss of appetite, emesis and diarrhea in both human and farm animals. Reliable diagnostic parameters for DON intoxication are needed to prevent deep health impact. In order to establish useful diagnostic parameters, we investigated clinical signs, hematological values, serum biochemical values, gross-, histo- and toxico-pathological findings in B6C3F1 male mice after oral administration of DON (0.83, 2.5 and 7.5 mg/kg) for 8 days. Body weight gain was significantly decreased at the highest dose of DON. Anorexia, ataxia, for crudness and lack of vigor were observed at the highest dose DON group. In hematological values, the numbers of WBC and platelets and hemoglobin content were reduced with decreased neutrophil and monocytes by 7.5 mg/kg DON. Prothrombin time (PT) and activated partial thromboplastin time (aPTT) were prolonged in a dose-dependent manner and the content of fibrinogen was elevated at high dose of DON. Of serum biochemical values, total protein, globulin, BUN, cholesterol and test-osterone were reduced but total bilirubin and albumin/globulin ratio increased. The enzyme activity of alkaline phosphatase was decreased while that of alanine aminotransferase was elevated. Relative organ weights of thymus, seminal vesicle/prostate and testes were dose-dependently reduced but those of liver and left adrenal gland increased with dose dependency. As for pathological findings, atrophy of thymus, seminal vesicle/prostate and testes and submucosal edema and ulceration in stomach and depletion of lymphocytes in thymus cortex were observed. In conclusion, these clinical, hematological, blood biochemical and patholgical parameters obtained in the present studies can be used for diagnosis of DON-mycotoxicosis, especially, low WBC, platelets, protein, BUN and testosterone and delayed prothrombin time can be available as for reliable diagnostic parameters.

• 대한수의학회지
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• 제28권2호
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• pp.279-284
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• 1988

Observations were made on the blood picture of 50 multiparous and 98 infertile cows. The results obtained in this study were summarized as follows. 1. Mean values of RBC, Hb, PCV, MCV, MCH, MCHC and platelets for normal multiparous cows were $6.87{\pm}0.84{\times}10^6/mm^3$, $10.3{\pm}1.3g/100ml$, $31.4{\pm}3.7ml/100ml$, $46.1{\pm}6.9{\mu}^3$, $15.3{\pm}2.6pg$, $34{\pm}2.7%$, and $372.7{\pm}304.7{\times}10^3/mm^3$ respectively. 2. Mean values of RBC, Hb, PCV, MCV, MCH, MCHC and platelets for infertile cows were $7.00{\pm}0.98{\times}10^6/mm^3$, $10.6{\pm}1.2g/100ml$, $32.1{\pm}3.6ml/100ml$, $45.8{\pm}6.7{\mu}^3$, $15.3{\pm}1.8pg$, $33.9{\pm}3.3%$, and $382.7{\pm}157.5{\times}10^3/mm^3$, respectively. 3. Mean values of WBC count for normal multiparous and infertile cows were $7.92{\pm}1.72$ and $9.04{\pm}2.87{\times}10^3/mm^3$ respectively. 4. In the differential leukocytes count, mean values of neutrophils, lymphocytes, monocytes, eosinophils and basophils for normal multiparous cows were $29.7{\pm}7.9%$, $56.8{\pm}7.6%$, $2.9{\pm}1.9%$, $9.9{\pm}5.3%$ and $0.3{\pm}0.7%$, respectively, and mean values of neutrophils, lymphocytes, monocytes, eosinophils and basophils for infertile cows were $31.9{\pm}7.8%$, $57.5{\pm}7.9%$, $2.6{\pm}1.9%$, $7.5{\pm}4.8%$, and $0.4{\pm}0.2%$, respectively.

• Journal of Periodontal and Implant Science
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• 제31권3호
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• pp.513-529
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• 2001

For reconstruction of the bony defect, various artificial substitutes were developed. Among them, there has been a study of calcium phosphate coated bone substitutes for increasing attachment of osteoblasts in vivo. The purpose of this study was to evaluate the effects of serum and platelet-rich plasma (PRP) on calcium phosphate coated culture plate for the initial attachment, proliferation and activity of osteoblasts. After sampling the blood from white rats and concentrating by centrifugation, the amount of attachment of PDGF-BB and $TGF-{\beta}$ on the calcium phosphate coated culture plate was measured. Cultured HOS and ROS 17/2.8 cell was measured on attachment level and proliferation rate of osteoblasts. Alkaline phosphatase activity of HOS and ROS 17/2.8 cell was measured for studying on the activating rate of osteoblast. 1. Counting the amount of platelets of seperated plasma and PRP, the average number of platelets was 177,003 $cell/{\mu}l$ in plasma, and 1,656,062 $cell/{\mu}l$ in PRP, which was about 9 times as high as in plasma. 2. Amount of PDGF-BB deposited at calcium phosphate coated plate had increased by the total amount of plasma and PRP on the culture plate, whereas $TGF-{\beta}$had been deposited on the plate only when treated by $50{\mu}{\ell}$ of PRP(p<0.01). 3. After plating serum and PRP for 3 hours, we attached with HOS and ROS17/2.8 cell for 1 hour and 4 hours. There were no significant difference of the attachment between serum and control group, whereas there were significantly difference of the attachment between depositioning of PRP and control group. 4. After attaching plasma and PRP for 3 hours, cell number has much increased when HOS and ROS17/2.8 cell had been cultured for 48 hours(p<0.05). 5. After attaching plasma and PRP for 3 hours, concentration of alkaline-phosphatase has increased when HOS and ROS17/2.8 cell had been cultured for 48 hours(p<0.01). These results suggested that PRP affected on initial cell attachment rather than proliferation and activation of osteoblasts at calcium phosphate coated plate.

• 대한임상검사과학회지
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• 제50권4호
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• pp.399-405
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• 2018

임상검사실에서의 혈소판 수 계산은 지혈이상의 진단과 치료에 필수적이며, 혈소판 수가 적은 경우 혈소판 수혈이 필요하고 항암치료 후 혈소판 수 경과를 모니터링하는데 매우 중요하다. 정도관리는 환자결과를 내보내기 전에 검사실에서 오류를 줄이고 교정하는 과정이며 분절된 적혈구는 혈소판과 크기가 비슷하여 혈소판 수 계산에 영향을 미친다. 검사실에서 내부정도관리low QC물질이 2SD를 벗어난 것을 경험하였고, 지금까지 용혈과 혈소판 지표들과의 관계에 대해 밝혀진 것이 충분하지 않아 연구를 시작하였다. 이에 본 연구에서는 XN CHECK low level QC물질을 이용해 PLT-I, PLT-O, PLT-F 방법간의 혈소판 수치를 비교하였으며, 용혈검체를 만들어 5가지 혈소판지표들에 대해 비교분석 하였다. 그 결과PLT-F방법에서 CV값이 가장 적게 나타났으며, 용혈검체에서 P-LCR 수치가 18.4%에서 31.9%로 증가함을 보였다. 이 연구를 통해 혈소판 수치가 낮은 경우는 PLT-F방법으로 하는 것이 더 정확하며, 검체가 용혈이나 변질이 의심되는 경우 이를 평가할 때 P-LCR을 새로운 지표로 제시하고 있으며, 사람 혈액검체를 이용한 추후 연구가 더 필요할 것이라고 사료된다.

• 대한방사선기술학회지:방사선기술과학
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• 제40권3호
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• pp.423-431
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• 2017

본 연구에서는 아로니아를 Rat에 경구 투여 후 방사선을 1회 전신 조사한 다음 혈액검사를 실시해 백혈구, 적혈구, 혈소판 등의 혈구세포의 변화 상태를 관찰하고 비교 분석하여 아로니아의 방사선 방어효과를 알아보고자 하였다. 실험동물은 SD계 Rat 6주령 200~250g 수컷 15마리를 이용하여 5마리를 하나의 군으로 정상군 (A), 5 Gy 대조군(B), 5 Gy 실험군(C)으로 설정하였고, 정상군(A)은 방사선 조사를 실시하지 않고, 대조군 (B)은 일반식 이를 투여하여 방사선조사를 하였고, 실험군(C)은 방사선조사 전 14일 동안 아로니아, 증류수 경구투여량(100 mg/kg/day)로 1일 2회씩 50 mg/kg/day로 각각 쥐에 14일 동안 경구 투여 후 방사선 조사(500 cGy/min로 5 Gy)를 하였다. 그 결과 정상군(A), 대조군(B), 실험군(C)에 따른 백혈구, 적혈구, 혈소판 차이를 비교해 본 결과 통계적으로 유의한 차이가 없었지만, 세부적으로 살펴보면, 림프구, 혈색소, 평균적혈구색소량에서 모두 정상군(A)이 대조군(B), 실험군(C)에 비해서 평균수치가 높게 나타나 통계적으로 유의한 차이가 있음을 알 수 있었다. 림프구에서는 정상군(A)과 대조군(B), 정상군(A)과 실험군(C)간에 통계적으로 유의한 차이가 보였으며, 평균적 혈구색소량에서는 정상군(A)과 실험군(C)에서 통계적으로 유의한 차이를 보였다. 본 연구의 결과로 보아 방사선에 조사된 쥐에서 아로니아의 방사선방호효과가 전체적으로 백혈구, 적혈구, 혈소판 등은 없는 것으로 사료되었고, 부분적으로는 림프구, 혈색소, 평균적혈구혈색소량은 통계적 유의성이 있는 것으로 알 수 있었다. 이 실험을 바탕으로 향후 다양한 연구가 선행되어야 할 것으로 사료된다.

• 한국임상수의학회지
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• 제27권6호
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• pp.627-630
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• 2010

본 연구는 중환자의 개에서 전신성염증반응증후군 및 패혈증에 의하여 유발되는 백혈구 활성화 지표를 분석하기 위하여 실행되었다. 분석된 지표로는 백혈구 수치, 혈소판 수치, 혈액 도말 표본의 백혈구 변화상 및 백혈구 표면의 CD11b발현 정도 등을 검사하였다. 그 결과, 패혈증군에서 백혈구의 CD11b 발현 값 (유세포 분석)이 현저하게 높게 관찰되었으며(P<0.05), 퇴행성 변화 정도도 같은 군에서 현저하게 높게 관찰 되었다(P<0.05). 또한 비 생존군의 CD11b 발현 값도 생존군에서의 값보다 현저하게 높았다. 이러한 연구 결과로 볼 때, 백혈구의 CD11b 발현은 중환자의 개에서 그 예후를 평가하는데 유용하다고 여겨진다.