Latar belakang. Sindrom Down adalah kelainan kromosom yang paling umum disebabkan oleh kelainan pada kromosom 21. Tumbuh kembang anak sindrom Down dipengaruhi oleh faktor hormonal insulin-like growth factor-1 (IGF-1). IGF-1 memediasi efek hormon pertumbuhan (GH) dan berperan penting dalam regulasi pertumbuhan somatik dan pengembangan organ termasuk perkembangan otak. Tujuan. Membuktikan korelasi IGF 1-dengan tingkat pertumbuhan dan perkembangan pada anak sindrom Down. Metode. Studi cross-sectional pada anak sindrom Down yang sesuai dengan kriteria inklusi di Rumah Sakit Kariadi Semarang. Tes IGF-1 dilakukan dalam waktu bersamaan. Penilaian pertumbuhan digunakan WHO antropometri Z-skor, perkembangan dinilai dengan Denver-II, digunakan kuesioner perkembangan (DQ) di empat sektor. Analisis tes korelasi Spearman digunakan. Rasio prevalensi yang dianalisis menggunakan tabel 2x2. Hasil. Subjek penelitian adalah 41 anak sindrom Down berusia 6 bulan sampai 6 tahun, terdiri dari 24 (58,5%) laki-laki, 17 (41,5%) perempuan. korelasi positif ditemukan antara IGF-1 dan WAZ (r=0,373; p=0,016), WHZ (r=0,459; p=0,03), pertumbuhan memanjang (r=0,670; p=0,000), motorik kasar (r=0,408; p=0,08), motorik halus (r=0,334; p=0,033). IGF-1 rendah, menyebabkan gangguan pertumbuhan memanjang 7,2 kali, malnutrisi 3,6 kali, berat badan rendah 1,92 kali, motorik kasar tertunda 1,161 kali, dan motorik halus tertunda 1,241 kali lebih besar dari normal IGF-1 tingkat. Kesimpulan. Terdapat korelasi yang signifikan antara IGF-1 dengan pertumbuhan dan perkembangan pada anak Down sindrom. Semakin rendah IGF-1 maka semakin tinggi untuk menderita kelainan pertumbuhan, berat badan, status gizi, serta motorik kasar, dan motorik halus tertunda. Sari Pediatri 2017;18 (5) Background. Down syndrome is the most common chromosomal disorder caused by abnormality on 21st chromosome. Growth and development of Down syndrome children are affected by hormonal factors including insulin-like growth factor-1(IGF-1). IGF-1 mediates the effects of growth hormone (GH) and plays an important role in somatic growth regulation and organ development including brain development. Objective. To prove the correlation of IGF-1 levels with growth and development in Down syndrome children. Methods. This is a cross-sectional study in Down syndrome children who match the inclusion criteria at Kariadi Hospital Semarang. The IGF-1 level test; and growth and development assessment was done in the same time. The growth assessment using WHO anthropometry Z-score. The development was assessed by Denver-II, using the development quotient (DQ) in four sectors. The correlationt test using Spearman. The correlation coefficient expressed by r, and p value < 0.05 is significant. Prevalens ratio analyzed using 2x2 table. Results. Subjects were 41 Down syndrome children aged 6 month to 6 year, consist of 24 (58.5 %) males, 17 (41.5%) females. Positive correlations were found between IGF-1 and WAZ (r= 0.373; p= 0.016), WHZ (r= 0.459; p= 0.03), longitudinal growth (r= 0.670; p= 0.000), gross motor (...
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