• Title, Summary, Keyword: bovine viral diarrhea

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Multiplex Reverse Transcription-PCR for Simultaneous Detection of Reovirus, Bovine Viral Diarrhea Virus, and Bovine Parainfluenza Virus during the Manufacture of Cell Culture-derived Biopharmaceuticals (세포배양 유래 생물의약품 제조공정에서 Reovirus, Bovine Viral Diarrhea Virus, Bovine Parainfluenza Virus 동시 검출을 위한 Multiplex Reverse Transcription-PCR)

  • Oh, Seon Hwan;Bae, Jung Eun;Kim, In Seop
    • Microbiology and Biotechnology Letters
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    • v.40 no.4
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    • pp.339-347
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    • 2012
  • Viral safety is an important prerequisite for clinical preparations of mammalian cell culture-derived biopharmaceuticals, because numerous adventitious viruses have been contaminated during the manufacturing process. In particular, Chinese hamster ovary (CHO) cells are highly susceptible to several RNA viruses including reovirus (Reo), bovine viral diarrhea virus (BVDV), and bovine parainfluenza virus (BPIV) and there have been reports of such viral contaminations. Therefore, viral detection during the CHO cell process is necessary to ensure the safety of biopharmaceuticals against viruses. In this study, a multiplex reverse transcription (RT)-PCR assay was developed and subsequently evaluated for its effectiveness as a means to simultaneously detect Reo, BVDV, and BPIV during the manufacture of cell culture-derived biopharmaceuticals. Specific primers for Reo, BVDV, and BPIV were selected, and a multiplex RT-PCR was optimized. The sensitivity of the assay for simultaneous amplification of all viral target RNAs was $7.76{\times}10^2\;TCID_{50}/ml$ for Reo, $7.44{\times}10^1\;TCID_{50}/ml$ for BVDV, and $6.75{\times}10^1\;TCID_{50}/ml$ for BPIV. The multiplex RT-PCR was proven to be very specific to Reo, BVDV, and BPIV and was subsequently applied to the validation of CHO cells artificially infected with each virus. It could detect each viral RNA from CHO cells as well as culture supernatants. Therefore, it was concluded that the multiplex RT-PCR assay can be applied to detection of the adventitious viruses during the manufacture of cell culture-derived biopharmaceuticals.

An Immunohistochemical Study of Viral Antigen in Aborted Fetuses Naturally Infected by Bovine Viral Diarrhea Virus

  • Shin, Tae-Kyun
    • Korean Journal of Veterinary Pathology
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    • v.3 no.2
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    • pp.73-76
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    • 1999
  • The tissue distribution and cellular localization of viral antigen in the brain of aborted fetus with bovine viral diarrhea virus(BVDV) infection was studied; BVDV antigens was detected in spleen, kidney, lung, eyelid as well as brain. In the brain, the virus was recognized in neurons and non-neuronal cells in the cerebellum and cerebrum. Many cells in the superficial layer and occasional Purkinje cells had BVDV antigens. As well, BVDV was also found in the perivascular cells, vascular endothelial cells and smooth muscle cells in the vessels and neuroglial cells in the white matter. This finding suggests that BVD virus favors infect progenitor cells in the brain, notably in the superficial layer of cerebellum, and damage normal development of cerebellum, which leads to cerebellar hypoplasia.

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Serological Survey of Cattle on Bovine Viral Diarrhea in Young Dong Province (강원 영동지역 우 바이러스성 설사병의 혈청학적 조사)

  • 이종오;한영도;육심용;김연수;장상문;정재영;김동훈
    • Korean Journal of Veterinary Service
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    • v.14 no.2
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    • pp.148-153
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    • 1991
  • To investigate epidemological sitution of bovine viral diarrhea infection, serological survey in cattle being raised in Young Dong province were conducted. Bovine sera collected ramdomly from August 1990 to December 1990 were tested for bovine viral diarrhea virus serum neutralizing antibody titers. The results were as follows 1. BVDV SN antibody levels were considerably varies and positive rate was 58(108 heads out of 186) 2. BVDV SN antibodies to breeds of cattle was various and positive rates showed that diary cattle, beef, native cattle(Korean) were 67.52%, 59.38%, 27.00% respectively followed in that order. 3. In the regional prevalence of BVD SN antibodies in cattle, Alpine(92%) was the highest, Young Dong south(59%) middle(44%), and North 30% followed in that order 4. In the age relatated prevalence of BVD SN antibodies, the younger than 6 month old group was the highest 65.7%, and older than 25 month old group was also at 62.2%. Then, 7 to 12 moth old group and 13 to 24 month old group showed to 58.5%, 52.1% respectively. 5. The geometric mean titer (log2) of 108 cattle serum samples showing positive BVD SN antibodies was 4.3. 6. In the geometric mean titer(log2) according to age, younger than 6 month old group (5.2) was the highest, then 7 to 12 month old group 2.8(SD=1.94 standard deviation) was lowliest.

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Detection of the etiological viruses from calves with clinical diarrhea in Gyeongnam south area (경남 남부지방에서 송아지설사병 원인체 바이러스 검출 조사)

  • Heo, Jung-Ho;Cho, Myung-Heui;Lee, Kuk-Cheon;Park, Mi-Nam;Cho, Eun-Jeong;Choi, Man-Su;Kim, Chung-Hui;Kang, Joung-Boo;Kim, Eui-Kyung;Kim, Jong-Shu
    • Korean Journal of Veterinary Service
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    • v.31 no.3
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    • pp.265-272
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    • 2008
  • Among calves' diseases, digestive diseases most frequently occur in Korea, and especially viral diarrhea is one of the most important diseases. This study was conducted to get some basic information for the control of the viral diarrhea in calves. The samples were obtained from 319 calves with clinical diarrhea from 195 farms in Gyeongnam south area (Gosung, Tongyung, Hadong) from June 2005 to August 2006, Viral detection was examined by polymerase chain reaction (PCR), Etiological viruses were detected from 171(53,6%) of 319 calves, and bovine rotavirus (BRV) were 130 (40,8%) and bovine viral diarrhea virus (BVDV) 41 (12,9%), and no coronavirus was confirmed, Statistical difference was found in BRV detection between summer (32.6%) and winter (57.7%). However there was no seasonal difference in BVDV. In detection rate of the calves under 19days, BRV was highest (55.1%), but BVDV lowest (5.1%). No big difference was in rate among herd size. However, BRV was lowest (26.8%) in the group over 51 heads, but BVDV was highest (19.5%) in the same.

Prevalence for persistent infection with bovine viral diarrhea virus in Korean native calves (한우 송아지의 소바이러스성 설사바이러스 지속감염률 조사)

  • Bae, You-Chan;Kim, Ha-Young;Park, Jung-Won;Yoon, Soon-Seek;Woo, Gye-Hyeong;Lee, O-Soo;Kang, Mun-Il
    • Korean Journal of Veterinary Research
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    • v.47 no.2
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    • pp.163-167
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    • 2007
  • Bovine viral diarrhea (BVD) is very important disease in cattle industry with a worldwide distribution. Detection and elimination of persistently infected calves with bovine viral diarrhea virus (BVDV) was valuable strategy for BVD eradication because those calves were main source for transmission. We surveyed persistent infection with BVDV by reverse transcription polymerase chain reaction (RT-PCR) and immunohistochemistry (IHC) using whole blood and skin. Five hundred thirty nine Korean native calves were tested. Four calves (0.7%) were positive for BVDV antigen for both tests. Those calves remained positive for follow-up by RT-PCR and IHC. Therefore they were identified as persistently infected with BVDV. We confirmed that immunohistochemistry using skin biopsy samples was very useful tool to detect persistently infected calves with BVDV. As far as we know, this would be first report on persistent infection with BVDV in Korea.

Study on prevalence of antigens to bovine viral diarrhea virus (BVDV) of Cattle in Busan area (2013~2014) (부산지역 소 바이러스성 설사병 바이러스(bovine viral diarrhea virus; BVDV) 감염 실태 조사·연구(2013~2014))

  • Kim, Hong-Tae;Park, Min-Sik;Lee, Gi-Heun;Lee, Keun-Woo
    • Korean Journal of Veterinary Service
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    • v.38 no.1
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    • pp.43-49
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    • 2015
  • Bovine viral diarrhea virus (BVDV) is a very important viral disease virus in cattle, domestic and wild ruminants. The purpose of this study is to investigate the positive rate of bovine viral diarrhea virus antigen by ELISA from Korean native and beef cattle reared in Busan area from March in 2013 to October in 2014. A total of 1,129 bovine blood samples were collected from 140 farms, 1,111 Korean native cattle of 135 farms and 18 beef cattle of 5 farms. Test for antigen was carried out by ELISA method. In general analysis, the positive rate of bovine viral diarrhea virus antigen were 0.7% (8/1,129) cattle and 5.0% (7/140) farm. In regional analysis, the positive rate of BVDV antigen of farm in Kijang-gun, Gangseo-gu, Geumjeong-gu, Saha-gu and Dongnae-gu were 1.4% (2/94), 3.6% (5/37), 0% (0/7), 0% (0/1) and 0% (0/1), respectively, and the positive rate of BVDV antigen of cattle were 0.4% (3/770), 1.5% (5/333), 0% (0/24), 0% (0/1) and 0% (0/1), respectively. The positive rate of BVDV antigen according to sex were 0.6% (6/1,085) female cattle and 4.6% (2/44) male cattle. According to the age of cattle, the positive rate of BVDV antigen in 1 year, 2 years, 3 years and 5 years old were 1.9% (4/215), 0.4% (1/265), 0.9% (2/234) and 1.0% (1/103), respectively, but 4 years (0/198), 6 years (0/55), 7 years (0/24), 8 years (0/14), 9 years (0/10), 10 years (0/7) and 11-15 years (0/3) old were negative, respectively.

Detection Rate of Bovine Viral Diarrhea Virus in Dairy Calves with Capture-ELISA (젖소송아지에서 ELISA를 이용한 소 바이러스성 설사병 바이러스 검출률)

  • Chon, Seung-Ki;Kim, Nam-Soo
    • Journal of Veterinary Clinics
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    • v.24 no.2
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    • pp.169-171
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    • 2007
  • The aim of this study was to detect bovine viral diarrhea virus (BVDV) from calves in Chonbuk province. Blood samples were taken from ninety-two dairy calves. Capture enzyme-linked immunosorbent assay (ELISA) was used to detect BVDV. BVDV were detected in eight out of ninety-two (8.6%) dairy calves. BVDV were detected in one of twenty five of female calves and one of twenty three of male calves of 4 months old, whereas in the 5 months age group, BVDV were detected in low of twenty three of female calves and two of twenty one of male calves. There were no significant differences (p>0.05) in the detection rate of BVDV on the basis of sex. On the other hand, ages of calves had significant differences (p<0.05) on the prevalence of BVDV.

Seroprevalence of Antigens to Bovine Viral Diarrhea Virus in Korean Calves of the Shown Healthy, Digestive and Respiratory Symptom (한우송아지에서 ELISA를 이용한 소 바이러스성 설사병 바이러스 항원 검출)

  • Chon, Seung-Ki;Park, Jin-Ho;Kim, Nam-Soo
    • Journal of Veterinary Clinics
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    • v.24 no.2
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    • pp.150-153
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    • 2007
  • The aim of this study was to investigate the prevalence of bovine viral diarrhea virus (BVDV) infection in Chonbuk province. Blood samples were taken from 92 korean calves to determined their serological status against BVDV, Capture enzyme-linked immunosorbent assay (ELISA) was used to test for antigen. The number of seropositive calves ranged from 3.3% to 12.9%. Antigens against BVDV were detected in 3.3% of healthy calves, 6.4% of digestive symptom calves, 12.9% of respiratory symptom calves, respectively. Sex and age of calves had no significant differences on the prevalence of BVDV. The results indicate that transmission of BVDV may have become exposed as a result of contact with acute infected or persistently infected cattle.

Outbreak of Bovine Viral Diarrhea Virus in Korean Indigenous Calf (한우송아지에서 소 바이러스성 설사병 바이러스 발생)

  • Song, Moo-Chan;Choi, Kyoung-Seong
    • Journal of Veterinary Clinics
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    • v.26 no.6
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    • pp.578-581
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    • 2009
  • A 25-day-old, Korean indigenous calf was presented with a 10 days history of respiratory disorders and bloody diarrhea, and died. This calf was extremely unthrifty compared to others and had evidence of chronic diarrhea based on matting of feces in the hair of the tail and perineum. Ecchymotic hemorrhages were observed on multiple organs at necropsy. Bovine viral diarrhea virus (BVDV) infection was identified by RT-PCR. The phylogenetic analysis showed that this case belonged to BVDV-2a subgroup and was related to highly pathogenic USA isolate 890 (U18059). This case provided evidence for circulation of BVDV-2 in Republic of Korea. The occurrence of BVDV-2 was also reconfirmed.