Neonatal growth patterns in a population of consecutively born Down syndrome children

M Clementi1, E Calzolari, L Turolla

  • 1Dipartimento di Pediatria, Università di Padova, Italy.

American Journal of Medical Genetics. Supplement
|January 1, 1990
PubMed

Insights

Infants with Down syndrome exhibit reduced prenatal growth in length, weight, and head circumference compared to normal newborns. However, their weight-for-length measurements suggest overweight conditions may develop postnatally.

Area of Science:

  • Pediatrics
  • Genetics
  • Neonatalogy

Background:

  • Down syndrome is associated with various health complications, including growth abnormalities.
  • Accurate growth charts are crucial for monitoring infant development.

Purpose of the Study:

  • To construct percentile charts for key neonatal anthropometric variables in infants with Down syndrome.
  • To compare growth patterns between infants with Down syndrome and a normal control group.

Main Methods:

  • Utilized data from 688 infants with Down syndrome and 6,890 controls from Italian congenital malformation registers.
  • Constructed percentile charts for neonatal length, weight, head circumference, and weight/length squared.

Main Results:

  • All growth parameters (length, weight, head circumference) were lower in Down syndrome infants compared to controls across all percentiles.
  • Weight/length squared percentiles were an exception, indicating different growth trajectories.

Conclusions:

  • Neonatal growth is significantly reduced prenatally in infants with Down syndrome.
  • Postnatal development may lead to overweight conditions in Down syndrome infants, warranting further investigation.

Related Concept Videos

Meiosis I01:49

Meiosis I

Meiosis is a carefully orchestrated set of cell divisions, the goal of which—in humans—is to produce haploid sperm or eggs, each containing half the number of chromosomes present in somatic cells elsewhere in the body. Meiosis I is the first such division, and involves several key steps, among them: condensation of replicated chromosomes in diploid cells; the pairing of homologous chromosomes and their exchange of information; and finally, the separation of homologous chromosomes by a...
Polygenic Traits01:18

Polygenic Traits

When more than one gene is responsible for a given phenotype, the trait is considered polygenic. Human height is a polygenic trait. Studies have uncovered hundreds of loci that influence height, and there are believed to be many more. Due to the high number of genes involved, as well as environmental and nutritional factors, height varies significantly within a given population. The distribution of height forms a bell-shaped curve, with relatively few individuals in the population at the...
Nature and Nurture01:10

Nature and Nurture

Many human characteristics, like height, are shaped by both nature—in other words, by our genes—and by nurture, or our environment. For example, chronic stress during childhood inhibits the production of growth hormones and consequently reduces bone growth and height. Scientists estimate that 70-90% of variation in height is due to genetic differences among individuals, and 10-30% of variation in height is due to differences in the environments that individuals experience, such as differences...
Meiosis vs. Mitosis02:57

Meiosis vs. Mitosis

Cell division is necessary for growth and reproduction in organisms. Mitosis aids cell growth and development by dividing somatic cells. In contrast, meiosis causes the division of germ cells and plays an essential role in sexual reproduction. Due to their unique functional requirements, mitosis and meiosis differ from each other in multiple aspects.
Before the start of mitosis and meiosis I, the cell synthesizes DNA, resulting in two homologous copies of each chromosome. DNA synthesis is...