Efficacy Evaluation of UCB-MNCs in the Treatment of Refractory Neonatal Diseases

Inclusion Criteria: * For children with hypoxic-ischemic encephalopathy (HIE): meet the diagnostic criteria for HIE. For children with bronchopulmonary dysplasia (BPD): 1) preterm infants with definite gestational age of 25-30 weeks; 2) birth weight 401-1249 g; 3) the risk of BPD was assessed to be greater than 60%. The scoring was based on the BPD high risk scoring system established by the NCHD Neonatal Cooperative Network; 4)parents read the subject's instructions, agreed to the treatment and signed the informed consent. For children with short bowel syndrome (SBS): 1) postoperative short bowel syndrome caused by neonatal necrotizing enterocolitis and other causes (developmental malformations of the digestive tract: intestinal atresia, anal atresia, intestinal stenosis, etc.); 2) parents read the subject's instructions, agreed to the treatment and signed the informed consent. Exclusion Criteria: * For children with HIE: unable or unwilling to provide informed consent or unable to comply with trial requirements. For children with BPD: 1) with severe anemia, severe intracranial hemorrhage, pulmonary hemorrhage, congenital respiratory malformations (posterior nostril atresia, tracheoesophageal fistula, cleft palate, etc.), complicated congenital heart disease, diaphragmatic hernia, shock, other serious comorbidities or complications (congenital inherited metabolic diseases, endocrine diseases, severe congenital malformations and other diseases that affect lung developme…