title: Elevated levels of interleukin-6 in the follicular fluid at the time of oocyte retrieval for in vitro fertilization may predict the development of early-form ovarian hyperstimulation syndrome.
abstract: OBJECTIVE
  To determine the possible predictive role of interleukin-2 (IL-2), IL-6, and tumor necrosis factor (TNF-alpha) in the development of early-form ovarian hyperstimulation syndrome (OHSS).
  
  
  METHODS
  Nested, case-control study.
  
  
  METHODS
  An IVF unit, university-based program.
  
  
  METHODS
  Follicular fluid (FF) was obtained from 322 high responders. The study group and control group comprised 10 patients who developed early, severe OHSS and 10 who did not develop OHSS, respectively. An additional control group included 10 low-responder patients who did not develop OHSS.
  
  
  METHODS
  Ovulation induction with hMG combined with GnRH analogue.
  
  
  METHODS
  All FF samples were tested for IL-2, IL-6, and TNF-alpha. The patient's serum was tested for mean E2 and P concentrations.
  
  
  RESULTS
  Interleukin-6 levels in the FF were significantly higher in the OHSS group than in the two control groups, whereas no differences were found in IL-2 and TNF-alpha. No correlation was found between the FF concentrations of IL-2, IL-6, and TNF-alpha and the mean serum E2 levels or the number of oocytes retrieved.
  
  
  CONCLUSIONS
  Elevated levels of IL-6 in the preovulatory FF at the time of oocyte retrieval for IVF may predict the development of early-form OHSS in high responders.
authors.affiliation: IVF Unit, Serlin Maternity Hospital, Israel.
authors.forename: E
authors.initials: E
authors.lastname: Geva
authors.forename: J B
authors.initials: JB
authors.lastname: Lessing
authors.forename: L
authors.initials: L
authors.lastname: Lerner-Geva
authors.forename: F
authors.initials: F
authors.lastname: Azem
authors.forename: I
authors.initials: I
authors.lastname: Yovel
authors.forename: A
authors.initials: A
authors.lastname: Amit
mesh_terms: D000328:Adult; D015415:Biomarkers / Q000032:analysis; D016022:Case-Control Studies; D004958:Estradiol / Q000097:blood; D005260:Female; D005307:Fertilization in Vitro; D015571:Follicular Fluid / Q000737:chemistry*; D006801:Humans; D007376:Interleukin-2 / Q000032:analysis; D015850:Interleukin-6 / Q000032:analysis*; D016471:Ovarian Hyperstimulation Syndrome / Q000175:diagnosis / Q000209:etiology*; D010062:Ovulation Induction / Q000009:adverse effects; D011237:Predictive Value of Tests; D014409:Tumor Necrosis Factor-alpha / Q000032:analysis
chemical_list: D015415:Biomarkers; D007376:Interleukin-2; D015850:Interleukin-6; D014409:Tumor Necrosis Factor-alpha; D004958:Estradiol