• Title/Summary/Keyword: biochemical

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Review of Biochemical Bone Metabolism Markers Change in Osteoporosis Incidence Factors (골다공증 발생요인에 따른 골대사 생화학적 지표의 변동 고찰)

  • Lee Hye-Ja
    • The Journal of Korean Physical Therapy
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    • v.14 no.4
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    • pp.412-422
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    • 2002

  • The use of biochemical markers of bone turnover may be particular interest in the investigation of bone disorders with osteoporosis. Serum osteocalcin(OC), total alkaline phosphatase and procollagen C, reflecting bone formation, and urinary pyridinium cross-links excretion, reflecting bone reabsorption have been measured in hyperthyroidism, postmenopause women, after testosterone supplementation, androgen, testosterone and estrogen deficiency, bone mineral density degree, age duration. Bone marks which is reflect to metabolic bone disorders are biochemical indices method to measure enzyme activity about bone formation, bone absorption and bone components in blood or urine. Bone metabolism biochemical marks are correlated with osteophorotic agents and also represent significantly different between bone mineral density and bone biochemical marks. Therefore if we develope and use bone metabolism marks which have higher sensitivity and specificity in bone formation and bone absorption, I think that these bone biochemical marks can have utility in the clinical application to predict osteoporosis risk group, bone loss, bone fracture and response degree to treatment of osteoporosis risk groups.

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Effect of Liquid Circulation Velocity and Cell Density on the Growth of Parietochloris incisa in Flat Plate Photobioreactors

  • Changhai Wang;Yingying Sun;Ronglian Xing;Liqin Sun
    • Biotechnology and Bioprocess Engineering:BBE
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    • v.10 no.2
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    • pp.103-108
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    • 2005

  • For more accurately describing the durations of the light and the dark phases of micro-algal cells over the whole light-dark cycle, and probing into the relationship between the liquid circulation time or velocity, the aeration rate and cell density, a series of experiments was carried out in 10 cm light-path flat plate photobioreactors. The results indicated that the liquid flow in the flat plate photobioreactor could be described by liquid dynamic equations, and a high biomass output, higher content and productivity of arachidonic acid, $70.10\;gm^{-2}d^{-1},\;9.62\%$ and 510.3 mg/L, respectively, were obtained under the optimal culture conditions.

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