• Korean Journal of Clinical Pharmacy
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• v.9 no.1
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• pp.62-65
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• 1999

Inorganic phosphate (Pi) in rabbit plasma was found to block completely phosphotyrosine phosphatase (PTPase) activity without affecting the alkaline phosphatase (ALPase) activity. Our results provided that (1) PTPase activity and inhibitor are separated after G-25 gel-filtration. (2) This inhibitor is heat stable and trypsin-resistant and it can be removed by dialysis using 3 Kd cut-off tubing. (3) The elution pattern of the inhibitor is identical to that of Pi, and by performing a seperate run with inorganic phosphate. (4) The PTPase activity was recovered following an incubation with $CaCl_2$ (10 mM).

• The Korean Journal of Zoology
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• v.35 no.1
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• pp.96-101
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• 1992

전기영동에 의하여 진도개와 삽사리의 혈청 단백질을 분석하였다. 이들의 혈청 단백질 전기영동상은 5개의 분획으로 나눌 수 있었다. 진도개의 총 혈청단백질은 8.40$\pm$1.63(g/dl)이었으며 albumin과 globulin의 비(A/G)는 0.81 $\pm$ 0.25이었다. 삽사리의 총 혈청단백질은 8.23 $\pm$2.20(g/dl)이었고 A/G는 0.78 $\pm$ 0.23이었다. 연령에 따라 Y-globulin의 양이 가장 크게 변했으며 진도개와 삽사리의 albumin과 globulin의 비는 다른 품종의 개들보다 낮았다.

• Journal of Nutrition and Health
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• v.29 no.9
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• pp.981-990
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• 1996

To define the risk facots of subclinical vitamin D deficiency in postmenopausal women, circulating serum 25-hydroxyvitamin D levels, known to be the indicator of vitamin D status, were measured and risk faxtors affecting it were investigated in 27 women with low 25-hydoxyvitamin d level(ie, the study group : serum 25-hydroxyvitamin D<10ng/ml) by comparing to 55 age-matched control(the control group) were analyzed. The serum level of 25-hydorxyvitamin D was analyzed by HPLC(High Pressure Liquid Chor-matography) and analyzed biochemical parameter. The following information was obtained by interviews : sociodemographic charateristics, the intake of food containing vitamin D, proxy measure of sunlight exposure(time spent outdoors), and reprocuctive histpry of the subjects. The study group had significantly lower levels of serum calcium, increased levels of iPTH and alkaline phosphatase, Among the dietary determents, energy, protein, fat, calcium, phophorus, and vitamin D intakes were lower in the study group than the normal group. The time spent outdoors in a day was not significantly different between the two groups. However, during the day, a specific time of time spent out doors between 12:00 and 14:00 was significantly lower in the study group. Logistic analysis revealed that vitamin D and calcium intake were more important affecting factors than the time spent outdoors in post menopausal women.