- Clinical Effects of E. cole Derived Authentic REcombinant Human Growth Hormone(DA-3002) in Children with Growth Hormone Deficiency.
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Se Won Yang, Byung Chul Lee, Chul Woo Ko, Duk Hee Kim, Han Wook Yoo, Woo Young Chung
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J Korean Endocr Soc. 1998;13(4):526-535. Published online January 1, 2001
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 Abstract
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- BACKGROUND
Recently authentic human growth hormone(hGH) has produced in the E coli K-12, W3110 by recombinant DNA tecbnology in Korea In this paper, the clinical efficacy and immunogenicity of this GH was shdied in 38 children with growth hormone deficiency during therapy of 1 year. METHODS: The subjects of this study were aged 4.9-13.9 years, diagnosed by failure of plasma GH to respond to insulin-induced hypoglycemia, arginine and/or L-dopa loading and height below -2 standard deviation of mean for their chronological age. Each patient received GH 0.5-0.7IU/kg/week subcutaneously in 6-7 divided doses. During treatment, vital signs, height, body weight and bone age were checked every 3 months. Complete blood count, urinalysis, blood chemistry and thyroid hormone were checked before and every 6 months. The measurement of serum IGF-1 level and antibody against hGH were performed before and every 6 months during therapy of I year. RESULT: The height velocities significantly increased from 3.3 +/- 1.5cm/year to 10.1 +/- 2.5 and 9.0 +/- 1.8cm/year at 6 and 12 months of therapy, respectively. The height standard deviation score for chronological age were significantly improved from -2.141.50 to -1.74 +/- 1.43 and -1.54 +/- 1.38 at 6 and 12 months of therapy with increasing ratio of bone age to chronological age from 0.72 +/- 0.15 at pretreatment to 0.76 +/- 0.15 at 6 month, 0.79 +/- 0.16 at 12 month of therapy. The plasma IGF-1 level significantly increased during treatment. One of 36 patients(2.8%) showed positive antibody against hGH after 1 year of treatment. During therapy of 1 year, unwanted and remarkable clinical side effect were not observed in all subjects. CONCLUSION: These results indicate that this E. coli derived authentic recombinant growth hormone is very effective in stimulating linear growth in children with growth hormone deficiency.
- Assessment of Bone Age: A comparison of the Greulich Pyle Method to the Tanner Whitehouse Method.
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Se Young Kim, Se Won Yang
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J Korean Endocr Soc. 1998;13(2):198-204. Published online January 1, 2001
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Abstract
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- BACKGROUND
Bone age measurements have clinical significance in estimation of growth status and prediction of final adult height. Mostly used methods of bone age measurements are Tanner Whitehouse method(TW2) and Greulich-Pyle method(OP). TW2 is known to be more accurate method in determining the bone age, compared to GP. But GP is being used more widely despite some shortcomings, because TW2 is time consuming and need special training. In this study, we observed the correlation between GP and TW2 to evaluate which bone age among three portions of hand and wrist[metacarpals and phalanges(GP1), carpal bones(GP2), distai radius and ulna (GP3)], measured by GP, was more correlated with the bone age, measured by TW2. METHODS: Left hand/wrist radiographs were taken from 100 prepubertal children with normal growth. These radiogrphs were reviewed by two pediatric endocrinologists independently. Bone ages using TW2 were measured at first, and then GP1, GP2, and GP3 were measured. These bone ages had been compared with TW2, using SAS computer program. RESULTS: The mean chronological age of 100 children was 10.0+/-2.5 years(5 years to 14.7 years range, 63 males and 37 females). The bone age by TW2 was 9.0+/- 2.6 years(2.3 to 13.6 years). The bone age by GP1, GP2, and GP3 were 8.8+/-2.5 years, 8.7+/-2.9 years, and 8.3+/-2.8 years, respectively. Bone ages by TW2 were significantly closer to the chronological age than those by GP. The Pea~rson correlation coefficients of GP1, GP2, and GP3 in eomparison to TW2 were 0,87(p=0.0001), 0.94(p=0.0001), and 0.91(p=0.0001), respectively, There are significant correlatkm between bone ages by TW2 and GP. Bone ages by GP2 and GP3 were statistically significantly different from those by TW2(P<0.01). Bone ages by GP1 has no statistical difference with that by TW2(P=0.64). CONCLUSION: TW2 method is more accurate than GP method in determining the bone age, but it needs time-consuming and laborious efforts. We suggest that the use of GP method for the metacarpals and phalanges can result in a considerable saving of time with no significant loss of accuracy and reproducibility.
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