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Hasegawa, A. et al.

Preventive effect of recombinant human lactoferrin in a rabbit preterm delivery model.

OBJECTIVE: Lactoferrin, an iron-binding glycoprotein found in cervical mucus and amniotic fluid, plays a defensive role against mucosal infections. This study examined the effect of recombinant human lactoferrin on preterm delivery in a rabbit model. STUDY DESIGN: Anesthetized rabbits were randomly assigned to receive either inoculation with Escherichia coli or saline solution and to receive treatment with or without recombinant human lactoferrin inserted into the cervix 2 hours before bacterial inoculation (condition A: saline + saline; condition B: E coli + saline; condition C: E coli + recombinant human lactoferrin). E coli , saline solution, and recombinant human lactoferrin were inserted into the cervix using a hysteroscope and a sterile polyethylene cannula. Fetus survival rate and days to delivery after inoculation were monitored and tumor necrosis factor-alpha concentrations were measured in maternal serum and amniotic fluid. RESULTS: Fetus survival for conditions A, B, and C were 95.7%, 0%, and 32.6%, respectively, whereas pregnancy continuation was 7.00 +/- 0 days, 3.25 +/- 0.43 days, and 4.85 +/- 1.77 days, respectively. CONCLUSION: Cervical recombinant human lactoferrin administration increased fetal survival and extended pregnancy. Lactoferrin has an anti-inflammatory action as well as an antibacterial action, suggesting that recombinant human lactoferrin has the potential to prevent preterm delivery originating from cervical infection in the clinical setting.[1]

References

Preventive effect of recombinant human lactoferrin in a rabbit preterm delivery model. Hasegawa, A., Otsuki, K., Sasaki, Y., Sawada, M., Mitsukawa, K., Chiba, H., Nagatsuka, M., Okai, T., Kato, A. Am. J. Obstet. Gynecol. (2005) [Pubmed]

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