Korean Journal of Veterinary Research 2004;44(2):279-286.
Multifocal interstitial nephritis of pigs slaughtered in Jeju
Hyoung-Seok Yang1, Na-Yeon Yang1, Wan-Cheul Kang2, Sang-Chul Kang1, Hong-Won Kang1, Jae-Hoon Kim1, Jong-Hee Bae1
1Department. of Veterinary Medicine, Cheju National University
2Animal Health Department of Jeju Provincial Institute for Livestock Promotion
제주지역 도축돈의 간질성 신염
양형석1, 양나연1, 강완철2, 강상철1, 강홍원1, 김재훈1, 배종희1
1제주대학교 수의학과
2제주도 축산진흥원
Abstract
Total 160 head of porcine kidneys were examined for gross and histopathological lesions and polymerase chain reaction (PCR) for porcine circovirus type 2 (PCV-2), porcine parvovirus (PPV), Leptospira species and porcine reproductive and respiratory syndrome virus (PRRSV). Grossly, 137 kidneys (85.6%) had lesions characterized by the presence of the scattered white foci. Microscopically, multifocal interstitial nephritis, which classified into 4 grades such as, no lesion (Score 0), mild lesion (Score 1), moderate lesion (Score 2) and severe chronic lesion (Score 3) with fibrosis, was observed in 159 cases (99.4%). The histopathologic mean score for multifocal interstitial nephritis was significantly different (P<0.05) between the cases of PCV-2 single infection and the cases of co-infection with PCV-2 and PPV. According to PCR evaluation, PCV-2 were detected in 73.8% (118 cases), PPV were in 66.9% (107 cases), however Leptospira spp. and PRRSV were negative in all kidneys. Both PCV-2 and PPV were detected in 52.5% (84 cases). In 84 cases co-infected with PCV-2 and PPV, the occurrence of lymphoid follicle and vasculitis were observed as 65.5% (55 cases) and 26.2% (22 cases), respectively. These results revealed that PCV-2 and PPV were major infectious agents for interstitial nephritis in slaughtered pigs, Jeju. And the histopathologic lesions of multifocal interstitial nephritis were more severe in the case co-infected with PCV-2 and PPV.
Key Words: interstitial nephritis, PCV-2, PPV, Leptospira, PRRSV
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