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Serum ghrelin and leptin concentrations in children with cancer : comparisons with normal children

Korean Journal of Pediatrics 2007;50(9):905-911.
Published online September 15, 2007.
Serum ghrelin and leptin concentrations in children with cancer : comparisons with normal children
So Hyun Park, Min Ho Jung, Nac Gyun Chung, Byung-Kyu Suh, Byung Churl Lee
Department of Pediatrics, College of Medicine, The Catholic University of Korea, Seoul, Korea
소아 종양 환아의 혈중 Ghrelin과 Leptin의 농도: 정상 소아와 비교
박소현, 정민호, 정낙균, 서병규, 이병철
가톨릭대학교 의과대학 소아과학교실
Byung-Kyu Suh, Email: suhbk@catholic.ac.kr
: Ghrelin, being secreted from the stomach, stimulates growth hormone secretion and controls energy homeostasis by increasing appetite. Leptin, being secreted from the adipocytes, controls weight and energy homeostasis by decreasing appetite. Leptin concentration is reported to increase after childhood cancer therapy. This study was aimed to compare ghrelin and leptin concentrations in normal children and children who received cancer therapy.
: We enrolled forty-three patients who were diagnosed with cancer and received radiotherapy or chemotherapy during Dec. 2004 through Dec. 2005 in St. Marys hospital and Kangnam St. Marys hospital. Forty-five healthy children were selected as a control group whose age, gender, weight and height were similar to those of cancer group. The serum leptin and ghrelin concentrations were also measured by radioimmunoassay.
: The cancer group showed higher BMI and leptin concentrations. The control group showed higher concentrations of ghrelin. Both control and cancer groups revealed positive correlations between leptin concentrations and BMI. Ghrelin concentrations in the control group showed negative correlations with age, height, weight and BMI but no significant correlation was found in the cancer group. All the parameters in the group treated with chemotherapy only were not different from those in the group treated with chemotherapy and irradiation. But the level of ghrelin in the acute myeloid leukemia group was much higher than those in the acute lymphoblastic leukemia group.
: Patients with pediatric cancer treatment have presented higher BMI and leptin concentrations but lower ghrelin concentrations than those in healthy children. Because of the relatively short duration and cross sectional method of the study, however, further long term and prospective study will be required in the future.
Key Words: Cancer, Ghrelin, Leptin, Acute myeloid leukemia, Acute lymphoblastic leukemia

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