Coxsackievirus B3 infection reduces female mouse fertility

  • Shim Hye Min
    Department of Microbiology, College of Medicine, Yeungnam University, 170, Hyeonchung-ro, Namgu, Daegu 705-703, Republic of Korea
  • Hwang Ji Young
    Department of Microbiology, College of Medicine, Yeungnam University, 170, Hyeonchung-ro, Namgu, Daegu 705-703, Republic of Korea
  • Lee Kyung Min
    Department of Microbiology, College of Medicine, Yeungnam University, 170, Hyeonchung-ro, Namgu, Daegu 705-703, Republic of Korea
  • Kim Yunhwa
    Department of Microbiology, College of Medicine, Yeungnam University, 170, Hyeonchung-ro, Namgu, Daegu 705-703, Republic of Korea
  • Jeong Daewon
    Department of Microbiology, College of Medicine, Yeungnam University, 170, Hyeonchung-ro, Namgu, Daegu 705-703, Republic of Korea
  • Roh Jaesook
    Department of Anatomy and Cell Biology, College of Medicine, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul 133-791, Republic of Korea
  • Choi Hyeonhae
    Department of Anatomy and Cell Biology, College of Medicine, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul 133-791, Republic of Korea
  • Hwang Jung Hye
    Department of Obstetrics and Gynecology, College of Medicine, Hanyang University Hospital, 222, Wangsimni-ro, Seongdong-gu, Seoul 133-791, Republic of Korea
  • Park Hosun
    Department of Microbiology, College of Medicine, Yeungnam University, 170, Hyeonchung-ro, Namgu, Daegu 705-703, Republic of Korea

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Abstract

Previously we demonstrated coxsackievirus B3 (CVB3) infection during early gestation as a cause of pregnancy loss. Here, we investigated the impacts of CVB3 infection on female mouse fertility. Coxsackievirus-adenovirus receptor (CAR) expression and CVB3 replication in the ovary were evaluated by immunohistochemistry or reverse transcription-polymerase chain reaction (RT-PCR). CAR was highly expressed in granulosa cells (GCs) and CVB3 replicated in the ovary. Histological analysis showed a significant increase in the number of atretic follicles in the ovaries of CVB3-infected mice (CVBM). Estrous cycle evaluation demonstrated that a higher number of CVBM were in proestrus compared to mock mice (CVBM vs. mock; 61.5%, 28.5%, respectively). Estradiol concentration in GC culture supernatant and serum were measured by an enzyme-linked immunosorbent assay. Baseline and stimulated levels of estradiol in GC were decreased in CVBM, consistent with significantly reduced serum levels in these animals. In addition, aromatase transcript levels in GCs from CVBM were also decreased by 40% relative to the mock. Bone mineral density evaluated by micro-computed tomography was significantly decreased in the CVBM. Moreover, the fertility rate was also significantly decreased for the CVBM compared to the mock (CVBM vs. mock; 20%, 94.7%, respectively). This study suggests that CVB3 infection could interfere with reproduction by disturbing ovarian function and cyclic changes of the uterus.

Journal

  • Experimental Animals

    Experimental Animals 64 (4), 343-352, 2015

    Japanese Association for Laboratory Animal Science

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