Abortive potency of Chlamydophila abortus in pregnant mice is not directly correlated with placental and fetal colonization levels.
نویسندگان
چکیده
Abortion, placental and fetal colonization, and levels of gamma interferon were analyzed for four Chlamydophila abortus strains presenting antigenic variations in a mouse model. Expression of virulence of these strains varied and indicated that abortion was not directly related to the number of bacteria in the placenta, and thus, other factors may have an important role in activating the abortion process.
منابع مشابه
A Study on Mycoplasma agalactiae and Chlamydophila abortus in Aborted Ovine Fetuses in Sistan and Baluchestan region, Iran
Abortion is one of the most important economic issues in sheep flocks. Chlamydophila abortus is an agent of enzootic abortions in sheep. Mycoplasma agalactiae is the main etiological agent of contagious agalactia, which can cause abortion in sheep. The aim of this study was to investigate the prevalence of M. agalactiae and C. abortus among aborted ovine fetu...
متن کاملProtection evaluation against Chlamydophila abortus challenge by DNA vaccination with a dnaK-encoding plasmid in pregnant and non-pregnant mice.
Mice were intramuscularly immunized with a dnaK-encoding DNA plasmid. The protective effect of DNA immunization against Chlamydophila abortus infection was studied in pregnant and non-pregnant mice models. In non-pregnant mice, the dnaK vaccine induced a specific humoral response with the predominant IgG2a isotype, which failed to have in vitro neutralizing properties. No delayed-type hypersens...
متن کاملLow Fetal Weight is Directly Caused by Sequestration of Parasites and Indirectly by IL-17 and IL-10 Imbalance in the Placenta of Pregnant Mice with Malaria
The sequestration of infected erythrocytes in the placenta can activate the syncytiotrophoblast to release cytokines that affect the micro-environment and influence the delivery of nutrients and oxygen to fetus. The high level of IL-10 has been reported in the intervillous space and could prevent the pathological effects. There is still no data of Th17 involvement in the pathogenesis of placent...
متن کاملProteic boost enhances humoral response induced by DNA vaccination with the dnaK gene of Chlamydophila abortus but fails to protect pregnant mice against a virulence challenge.
In order to enhance the quantity and the protective properties of the antibodies induced by DNA vaccination with the heat shock protein dnaK gene of Chlamydophila abortus AB7 as well as to elicit an efficient cellular immune response, we vaccinated mice with a DNA prime followed by a boost with the recombinant DnaK protein. In non-pregnant mice, this strategy induced the same predominance of th...
متن کاملThrombophilia, Anticoagulant Therapy, and Pregnancy Outcome in Women with Poor Obstetric History
Background: The role of anticoagulant medications in preventing placental mediated pregnancy complications in patients with and without thrombophilia has not been investigated well. One underlying cause is associated with adverse effects of anticoagulants in pregnancy including teratogenicity, complexities in dosing and management of anticoagulants during pregnancy and labor. We aimed to assess...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Infection and immunity
دوره 71 12 شماره
صفحات -
تاریخ انتشار 2003