title: [The relationship among congenital Toxoplasma gondii infection, pregnancy outcome and T lymphocyte subsets in umbilical cord blood].
abstract: OBJECTIVE
  To reveal the relationship among congenital Toxoplasma gondii (T. gondii) infection, T lymphocyte cell subsets in umbilical cord blood and pregnancy outcome.
  
  
  METHODS
  784 umbilical cord blood samples were collected and information of pregnancy outcomes was collected in a hospital of Hefei city, Anhui province during March 2009 to May 2010. T. gondii IgM antibodies in the sera were detected by ELISA. For all neonates infected with T. gondii and 10 healthy neonates, T lymphocyte cell subsets were detected by flow cytometry.
  
  
  RESULTS
  According to the detection results of T. gondii IgM antibodies, 784 neonates were divided into infection group (21 neonates) and control group (763 neonates). The body weight and 1 min Apgar score of infection group were (3116.4 ± 352.6) g and (8.21 ± 1.26) points, respectively, which were statistically lower than control group ((3220.1 ± 242.3) g and (8.77 ± 1.61) points, respectively) (P < 0.01). The proportion of adverse pregnancy outcome of infection group was 19.0% (4/21), which was statistically greater than control group (4.8%, 37/763) (P < 0.01). The percentage of CD(3)(+) T lymphocyte cells in umbilical cord blood in infection group with and without adverse pregnancy outcomes were (64.51 ± 5.27)% and (64.32 ± 4.56)%, respectively, which were statistically lower than control group ((69.32 ± 4.32)%) (P < 0.01). The ratio value of CD(4)(+)/CD(8)(+) in infection group with, without adverse pregnancy outcomes and control group are 1.39 ± 0.24, 1.64 ± 0.28 and 2.34 ± 0.46, respectively, which showed statistical difference between any 2 groups (P < 0.01).
  
  
  CONCLUSIONS
  T. gondii infection leads to adverse pregnancy outcomes and disorder of cellular immunity while T lymphocyte cell subsets are closely associated with adverse pregnancy outcome.
authors.affiliation: Department of Clinical Laboratory, Third Affiliated Hospital of Anhui Medical University, Hefei 230061, China.
authors.forename: Dong-mei
authors.initials: DM
authors.lastname: Gao
authors.forename: Jun
authors.initials: J
authors.lastname: Zhao
authors.forename: Yuan-yuan
authors.initials: YY
authors.lastname: Xia
authors.forename: Xiu-yi
authors.initials: XY
authors.lastname: Li
authors.forename: Ruo-mei
authors.initials: RM
authors.lastname: Li
authors.forename: Ji-wen
authors.initials: JW
authors.lastname: Pan
mesh_terms: D016022:Case-Control Studies; D005260:Female; D005312:Fetal Blood / Q000166:cytology / Q000276:immunology*; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D011256:Pregnancy Outcome; D016176:T-Lymphocyte Subsets / Q000276:immunology*; D014125:Toxoplasmosis, Congenital / Q000276:immunology*