RT Journal Article T1 The postnatal leptin surge supports immune cell function inrats A1 Hunsche, Caroline A1 Hernández, Oskarina A1 Mela Rivas, Virginia A1 Viveros, María Paz A1 Fuente del Rey, Mónica de la AB Background: Leptin plays an important role in the regulation of the immune response. There is a physiological surge of leptin in rodents during the neonatal period, which has mainly been studied in the context of brain development. However, little is known about the effects of this neonatal leptin surge on immunity. Therefore, we investigated whether blocking this leptin surge could affect several immune functions. Methods: Male and female rats were injected subcutaneously with 5 mg/Kg/day of rat pegylated super leptin antagonist during the neonatal period (PND5-9). On the peripubertal period, relevant functions as well as cytokine release by spleen leukocytes were studied in these animals. Results: The results showed that the animals significantly display an impaired anti-tumor NK activity and chemotactic and proliferation capacity of lymphocytes in response to mitogens. In addition, several cytokine concentrations, released under mitogen-stimulated conditions, were also altered. Conclusion: In conclusion, the neonatal leptin surge seems to be involved in the establishment of an adequate immune response and cytokine profile, which are crucial for the maintenance of a healthy life PB Taylor and Francis SN 0882-0139; Electronic: 1532-4311 YR 2021 FD 2021-06-14 LK https://hdl.handle.net/20.500.14352/8656 UL https://hdl.handle.net/20.500.14352/8656 LA eng NO Ministerio de Ciencia e Innovación (MICINN) NO Instituto de Salud Carlos III (Madrid, España)/Fondo Europeo de Desarrollo Regional(FEDER) NO Universidad Complutense de Madrid DS Docta Complutense RD 7 may 2024