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Molecular Veterinary Research, Int’l Journal of
2013, Vol.3, No.7, 34-35 http://ijmvr.sophiapublisher.com
Research Report
Open Access
White Rice-like Granule Lesions in Chlamydially Aborted Fetus's Placentas:
PCR Diagnosis of A Case
Changqing Qiu , Jizhang Zhou , Xiao-an Cao , Fuying Zheng , Guozhen Lin , Xiaowei Gong
State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou Gansu
730046,China
Corresponding Author email: cqqiu@126.com;
Author
International Journal of Molecular Veterinary Research, 2013, Vol.3, No.7 doi: 10.5376/ijmvr.2013.03.0007
Copyright
© 2013 Qiu et al. This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use,
distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
On the pig farm in Longyan City, Fujian province, chlamydial abortion in pregnant pigs happened. White rice-like
granule lesions were formed in the placentas of some cases which had not been reported before in China. For knowledge of the
problem, 30 pig sera were sampled for detecting the antibodies against chlamydia psittaci using IHA for animal chlamydiosis and the
result of test was 12 serum samples were positive for chlamydial antibody (the antibody titer 1:16~1:64), and the chlamydia infection
rate reached 12/30 (40.0%). And we sampled two fetus stomach contents and five fetal membranes for examining
Chlamydia
sp. by
means of nested polymerase chain reaction (nested-PCR) and the result showed 1/2 aborted pig fetus’s fetal membranes with a lot of
white rice-like granules, 2/2 aborted pig fetus’ stomach contents, and 2/3 aborted pig fetus’s fetal membranes without any white
rice-like granules were positive for chlamydia (5/7 positive rate). The lesion formation may be related with chlamydia infection time.
Keywords
Chlamydial abortion; Pathologic lesion; PCR diagnosis; Case study; Pig
Introduction
Swine chlamydiosis is
Chlamydia psittaci
-caused
contagious disease characterizing abortion, still birth
and death of a number of newborn piglets in perinatal
period (Milon et al., 1983; Bortnichuk, 1989; Qiu et
al., 1998, 1999, 2000; Sachse et al., 2004).
1 Result and Analysis
1.1 A case study of white rice-like granule lesions
On the pig farm in Longyan City, Fujian province, in
the east of China, in order to prevente abortion, pig
herds have been inoculated classical swine fever
vaccine, Japanese encephalitis vaccine, pig parvovirus
vaccine and pseudorabies virus vaccine annually. But
some of pregnant sows aborted or labored partial dead
fetuses with fetal membranes with a lot of white
rice-like granules (Figure 1). For knowledge of the
problem, 30 pig sera were sampled for detecting the
antibodies against
Chlamydia psittaci
using IHA for
animal chlamydiosis and the result of test was 12
serum samples were positive for chlamydial antibody
(the antibody titer 1:16 ~ 1:64), and the chlamydia
infection rate reached 12/30 (40.0%).
Figure 1 There are a lot of white rice-like granules in fetal
membranes of a partial aborted fetuses
Molecular Veterinary Research Int’l Journal of
Preferred citation for this article:
Qiu et al., 2013, White Rice-like Granule Lesions in Chlamydially Aborted Fetus's Placentas: PCR Diagnosis of A Case, International Journal of Molecular
Veterinary Research, Vol.3, No.7 34-35 (doi: 10.5376/ijmvr.2013.03.0007)
Received: 21 Apr., 2013
|
Accepted: 09 May., 2013
|
Published: 29 Aug., 2013