Medicine and Health Sciences Commons^™

The Relationship Between Subnormal Peak-Stimulated Growth Hormone Levels And Auxological Characteristics In Obese Children, Jefferson Barrett, Louise S. Maranda, Benjamin U. Nwosu

Benjamin U. Nwosu

Context: The hypothesis that obese children are overdiagnosed with growth hormone deficiency (GHD) has not been adequately investigated in the context of adiposity-related differences in auxology.

Aim: To investigate the differences in auxological parameters between short, prepubertal, obese children, and normal-weight peers who underwent growth hormone stimulation testing (GHST).

Hypothesis: Over-weight/obese children with GHD [peak growth hormone (GH) < 10 μg/L] will have higher values for growth velocity (GV) standard deviation score (SDS), bone age minus chronological age (BA − CA), and child height SDS minus mid-parental height (MPTH) SDS when compared to normal-weight GHD peers.

Subjects and Methods: A retrospective review of anthropometric and provocative GHST data of 67 prepubertal, GH-naïve children of age 10.21 ± 2.56 years (male n = 45, age 10.8 ± 2.60 years; female n = 22, age 8.94 ± 2.10). Inclusion …

The Relationship Between Subnormal Peak-Stimulated Growth Hormone Levels And Auxological Characteristics In Obese Children, Jefferson Barrett, Louise S. Maranda, Benjamin U. Nwosu

Benjamin U. Nwosu

Context: The hypothesis that obese children are overdiagnosed with growth hormone deficiency (GHD) has not been adequately investigated in the context of adiposity-related differences in auxology. Aim: To investigate the differences in auxological parameters between short, prepubertal, obese children, and normal-weight peers who underwent growth hormone stimulation testing (GHST). Hypothesis: Over-weight/obese children with GHD [peak growth hormone (GH) < 10 μg/L] will have higher values for growth velocity (GV) standard deviation score (SDS), bone age minus chronological age (BA − CA), and child height SDS minus mid-parental height (MPTH) SDS when compared to normal-weight GHD peers. Subjects and Methods: A retrospective review of anthropometric and provocative GHST data of 67 prepubertal, GH-naïve children of age 10.21 ± 2.56 years (male n = 45, age 10.8 ± 2.60 years; female n = 22, age 8.94 ± 2.10). Inclusion criteria: GHST using arginine and clonidine. Exclusion criteria: hypopituitarism, abnormal pituitary magnetic resonance imaging scan, syndromic obesity, or syndromic short stature. Data were expressed as mean ± SD. Results: The over-weight/obese children with peak GH of <10 μg/L had significantly lower value for natural log (ln) peak GH (1.45 ± 0.09 vs. 1.83 ± 0.35, p = 0.022), but similar values for GV SDS, insulin-like growth factor-I, insulin-like growth factor binding protein-3, bone age, BA − CA, MPTH, and child height SDS minus MPTH SDS compared to normal-weight peers with GHD. After adjusting for covariates, the over-weight/obese children (BMI ≥ 85th percentile) were >7 times more likely than normal-weight subjects (BMI < 85th percentile) to have a peak GH of <10 μg/L, and 23 times more likely to have a peak GH of <7 μg/L (OR = 23.3, p = 0.021). There was a significant inverse …

Lactose Intolerance: Lack Of Evidence For Short Stature Or Vitamin D Deficiency In Prepubertal Children, Nithya Setty-Shah, Louise S. Maranda, Ninfa Candela, Jay G. Fong, Idris Dahod, Alan D. Rogol, Benjamin U. Nwosu

Benjamin U. Nwosu

Background: The health consequences of lactose intolerance (LI) are unclear. Aims: To investigate the effects of LI on stature and vitamin D status. Hypotheses: LI subjects will have similar heights and vitamin D status as controls. Subjects and Methods: Prepubertal children of ages 3-12 years with LI (n=38, age 8.61 ± 3.08y, male/female 19/19) were compared to healthy, age- and gender-matched controls (n=49, age 7.95±2.64, male/female 28/21). Inclusion criteria: prepubertal status (boys: testicular volume Results: There was no significant difference in 25(OH)D between the LI and non-LI subjects (60.1±21.1, vs. 65.4 ± 26.1 nmol/L, p = 0.29). Upon stratification into …

Data From: Lactose Intolerance: Lack Of Evidence For Short Stature Or Vitamin D Deficiency In Prepubertal Children, Nithya Setty-Shah, Louise S. Maranda, Ninfa Candela, Jay G. Fong, Idris Dahod, Alan D. Rogol, Benjamin U. Nwosu

Benjamin U. Nwosu

Background: The health consequences of lactose intolerance (LI) are unclear. Aims: To investigate the effects of LI on stature and vitamin D status. Hypotheses: LI subjects will have similar heights and vitamin D status as controls. Subjects and Methods: Prepubertal children of ages 3-12 years with LI (n=38, age 8.61 ± 3.08y, male/female 19/19) were compared to healthy, age- and gender-matched controls (n=49, age 7.95±2.64, male/female 28/21). Inclusion criteria: prepubertal status (boys: testicular volume Results: There was no significant difference in 25(OH)D between the LI and non-LI subjects (60.1±21.1, vs. 65.4 ± 26.1 nmol/L, p = 0.29). Upon stratification into …