CUO Yuping, et al. A study on pathogenesis and inheritance risk of congenital mental retardation[J]. Journal of Chongqing Medical University, 2003,(3):300-302.
CUO Yuping, et al. A study on pathogenesis and inheritance risk of congenital mental retardation[J]. Journal of Chongqing Medical University, 2003,(3):300-302. DOI: 10.13406/j.cnki.cyxb.2003.03.013.
Objective:To investigate the genetic factors relating to mental retardation (MR).Methods:We have analysed 840 cases of congenital mental retardation with biochemistry lab tests
cytogenetic study and family investigation.Results:21 cases were due to monogenic disorders (2.50%);216 cases were due to chromosomal diseases (25.71%);13 cases were due to polygenic disorders (1.55%);590 cases were due to unknown causes (70.24%).Conclusion:It suggested that occurrence of mental retardation is related to both genetic factors and environmental factors.