title: CD107a Expression and IFN-γ Production as Markers for Evaluation of Cytotoxic CD3+ CD8+ T Cell Response to CMV Antigen in Women with Recurrent Spontaneous Abortion.
abstract: BACKGROUND
  Some evidence has shown a relationship between primary human cytomegalovirus (CMV) infection and pregnancy loss. The impact of CMV infection reactivation during pregnancy on adverse pregnancy outcomes is not completely understood. It is proposed that altered immune response, and therefore, recurrence or reactivation of latent CMV infection may relate to recurrent spontaneous abortion (RSA); however, few data are available in this regard. To find out about any cell mediated defect and reactivation of latent CMV infection in women with RPL, cellular immunity to the virus has been evaluated by specific cytotoxic T lymphocyte (CTL) response to CMV.
  
  
  METHODS
  In a case control study, CTL CD107a expression and in- tercellular IFN-γ production in response to CMV pp65 antigen and staphylococcus enterotoxin B (SEB) in women with RSA were assessed by flow cytometric analysis. Forty-four cases with history of recurrent pregnancy and forty-four controls with history of successful pregnancies were included. The FACSCaliber flow cytometer were used for analysis.
  
  
  RESULTS
  No significant difference was observed between CD107a expression and IFN-γ production in response to CMV PP65 antigen in RPL patients and control group. How- ever, the cytotoxic response to SEB antigen in patients with RPL was significantly lower than control group (p=0.042).
  
  
  CONCLUSIONS
  The results of this study show that impaired CD107a expression and IFN-γ production as CTL response to CMV does not appear to be a major contrib- uting and immune incompetence factor in patients with RPL, but cytotoxic T cell response defect to other antigens requires to be assessed further in these patients.
authors: Acquired Immunodeficiency Research Center, Isfahan University of Medical Sciences, Isfahan, Iran.
authors: Batoul
authors: B
authors: Tarokhian
authors: Acquired Immunodeficiency Research Center, Isfahan University of Medical Sciences, Isfahan, Iran.
authors: Roya
authors: R
authors: Sherkat
authors: Department of Reproduction Biotechnology at Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran.
authors: Mohamma Hossein
authors: MH
authors: Nasr Esfahani
authors: Department of Immunology, Isfahan University of Medical Sciences, Isfahan, Iran.
authors: Minoo
authors: M
authors: Adib
authors: Department of Reproduction Biotechnology at Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran.
authors: Abbas
authors: A
authors: Kiani Esfahani
authors: Infectious Diseases and Tropical Medicine Research Center, Isfahan University of Medical Sciences, Isfahan, Iran.
authors: Behrooz
authors: B
authors: Ataei
keywords: CMV; Cytotoxic T Lymphocyte; Recurrent Abortion