• Title/Summary/Keyword: recombinant human parathyroid hormone

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General Pharmacological Properties of Recombinant Human Parathyroid Hormone (재조합 부갑상선 흘몬의 일반약리작용)

  • 이은방;장혜옥;이향주;천선아
    • Biomolecules & Therapeutics
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    • v.6 no.2
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    • pp.159-164
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    • 1998
  • General pharmacological properties of recombinant human parathyroid hormone (hPTH) were examined. The administration of hPTH (7, 35 and 175 lU/kg sc) in mice had no effects in general behavior and central nervous system, and no influences on normal body temperature, writhing syndromes induced by 0.7% acetic acid solution and chemoshock produced by strychnine and pentetrazol solution. hPTH (9 and 44 lU/kg, sc) given to anesthetized rabbits showed no effect on blood pressure of carotid artery and respiration, and it did not influence the responses produced by injection of acetylcholine or epinephrine. It showed no direct effect at 4.4$\times$10$_{-2}$IU/ml in isolated stomach fundus and uterus of rats and ileum of guinea-pig, and it also showed no inhibition of contraction produced by acetylcholine, oxytocin, serotonin and histamine in the above-mentioned preparations. It did not influence intestinal propulsion at the doses of 7,35 and 175 lU/kg sc in mice. This drug exhibited no effect on urinary excretion at the doses of 7 and 35 lU/kg sc in rats. However, at a dose of 175 lU/kg sc, it showed a decreased urination along with decreased excretion of potassium, sodium and chloride ion. These results indicate that hPTH does not exert any of serious pharmacological effects except the inhibition of urination at a highest dose used.

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Recombinant Human Parathyroid Hormone Related Peptide (1-34) Stimulates Osteoclastic Bone Resorption in Both Rodent and Avian Disagsresated Osteoclast Culture (파골세포배야에서 나타난 부갑상선호르몬의 설치류 및 조류 파골세포에 대한 촉진 효과)

  • 양대석;김일찬남궁용이창호
    • The Korean Journal of Zoology
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    • v.37 no.2
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    • pp.255-261
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    • 1994
  • Recombinant human pBrathyriod hormone related peptide (1-341 (rhPTHrP) has been known to stimulate bone resorption in intact bone tissue culture system. Osteoclast has been known as a primary responsible cell for bone resorption. To examine the effect of rhPTHrP on this cell, we employed disaggregated rat osteodast culture. As a result, we found that rhPTHrP sisnificBntly elevates both the number and total area of resorbed pits in this culture. On the other hand, the conflicting results between disagsregated rat osteoc13st culture and Ca2+-deficient hen osteoclast culture system have been a big obstacle for the progress of bone research. To verify the differences between rat 3nd chick osteoclast system, we performed the same experiment using chick embryonic osteoclast. Since the similar results were obtained from the disaggregated chick osteoclast culture, the discrepancy between chick and rat osteoclast culture study seemed to be due to the difference in culture method, rather due to the species-difference.

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Real time optimization of fed-batch culture of recombinant yeast

  • Na, Jeong-Geol;Kim, Hyeon-Han;Jang, Yong-Geun;Jeong, Bong-Hyeon
    • 한국생물공학회:학술대회논문집
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    • 2001.11a
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    • pp.81-84
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    • 2001
  • A real time optimization algorithm for fed-batch cultures of recombinant yeast to determine the optimal substrate feed rate profile has been developed. Its development involved four key steps: (1) development of reliable adaptive model. (2) development of optimization algorithm. (3) design of on-line model update algorithm to be incorporated into the optimization algorithm and (4) experimental validation. A recombinant Saccharomyces cerevisiae producing human parathyroid hormone (hPTH) was chosen as the model strain. It was found to be very successful in maintaining cell growth and galactose consumption at leigh levels, thus resulting in significant improvements in the productivity (up to 2.1 times) and intact hPTH concentration (up to 1.5 times) compared with the case of an intermittent glucose and galactose, or galactose feeding.

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Treatment of chronic kidney disease in children (소아의 만성신장질환의 치료)

  • Lee, Joo Hoon
    • Clinical and Experimental Pediatrics
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    • v.52 no.10
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    • pp.1061-1068
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    • 2009
  • The treatment of pediatric patients with chronic renal disease comprises management of nutritional imbalance, fluid, electrolyte, and acid-base disturbances, mineral bone disease, anemia, hypertension, and growth retardation. The treatment also includes administration of appropriate renal replacement therapy, if required. Adequate dietary intake of carbohydrates, fats, and proteins and caloric intake must be encouraged in such patients to ensure proper growth and development. In addition, fluid, electrolyte, and acid-base status must be regularly monitored and should be well maintained. Serum calcium, phosphorus, and parathyroid hormone levels must be maintained at their target range, which are determined on the basis of the glomerular filtration rate, to avoid the development of mineral bone disease. This can be achieved by using phosphorus binders and vitamin D analogues. An erythropoiesis-stimulating agent must be administered along with iron supplementation to maintain the hemoglobin level of the patients between 11-12 g/dL. Hypertension must be controlled with adequate water and sodium balance and appropriate antihypertensive agents. Administration of recombinant human growth hormone is recommended to improve the final adult heights.

Surface Plasmon Resonance Imaging Analysis of Hexahistidine-tagged Protein on the Gold Thin Film Coated with a Calix Crown Derivative

  • Chung, Bong-Hyun;Baek, Seung-Hak;Shin, Yong-Beom;Kim, Min-Gon;Ro, Hyeon-Su;Kim, Eun-Ki
    • Biotechnology and Bioprocess Engineering:BBE
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    • v.9 no.2
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    • pp.143-146
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    • 2004
  • A surface plasmon resonance (SPR) imaging system was constructed and used to detect the hexahistidine-ubiquitin-tagged human parathyroid hormone fragment (His$\sub$6/-Ub-hPTHF(1-34)) expressed in Escherichia coli. The hexahistidine-specific antibody was immobilized on a thin gold film coated with ProLinker$\^$TM/ B, a novel calixcrown derivative with a bifunctional coupling property that permits efficient immobilizaton of capture proteins on solid matrices. The soluble and insoluble fractions of an E. coli cell lysate were spotted onto the antibody-coated gold chip, which was then washed with buffer (pH 7.4) solution and dried. SPR imaging measurements were carried out to detect the expressed His$\sub$6/-Ub-hPTHF(1-34). There was no discernible protein image in the uninduced cell lysate, indicating that non-specific binding of contaminant proteins did not occur on the gold chip surface. It is expected that the approach used here to detect affinity-tagged recombinant proteins using an SPR imaging technique could be used as a powerful tool for the analyses of a number of proteins in a high-throughput mode.