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Oculocutaneous albinism in a calf in Korea
Kim Bum-Seok,Camer Gerry Amor,Chekarova Irina,Zeeshan Muhammad,Borisova Irina,Blank Ivar,Ejaz Sohail,Park Hee-Jin,Kwon Jung-Kee,Lim Chae-Wong The Korean Society of Veterinary Service 2006 韓國家畜衛生學會誌 Vol.29 No.4
Albinism, characterized by absence or lack of pigmentation from the hair, skin, hooves, nasal region and the eyes is rarely seen in cattle in Korea. A 15-day old calf, approximately weighing 28 kg has been conspicuously distinct from the rest of 40 herds of cattle raised in Sunchang country because of its white coat color, white muzzle and hooves and eyes with light pinkish iris. The calf was born of Korean indigenous cattle with no previously reported history of albinism since inception of the farm for over a decade period. It was assumed as a form of recessive genetic disorder. This observation was documented to present occurrence of albinism in cattle in Korea.
Hepatotoxicity Induced by Microcystin-LR in Rat
Bumseok Kim,Jae Woo Cho,Hyuk Nyun Kwon,Ivar Blank,Irina Borisova,Sohail Ejaz,Irina Chekarova,Jungkee Kwon,Chae Woong Lim 한국독성학회 2006 Toxicological Research Vol.22 No.4
Microcystin-LR (MC-LR) is a cyanobacterial hepatotoxin mainly produced by Microcystis aeruginosa. The current study examined the effects of a single intraperitoneal dose of MC-LR in rats. Female Sprague-Dawley rats were intraperitoneally injected with MC-LR (100 ㎍/㎏ body weight) and they were sacrificed at 0, 20, 40, 80, 160 min, or 12 h after injection. Clinically, animals showed lethargy and had ruffled hair beginning at 40 min post injection. In the gross findings, liver was enlarged and its color was changed into dark red beginning at 40 min post injection. Microscopically, dissociation of centrilobular hepatocytes and hemorrhage was observed in the hepatic central regions and such pathological changes were then extended to the portal regions of liver by time course manner. Interestingly at 80 min after MC-LR injection, the entrapped eosinophilic materials that may be necrotic fragments of dissociated hepatocytes were found in the capillaries of lung and renal glomerulus. Ultrastructurally, microvilli of the hepatocytes were disrupted or lost at all time points. Furthermore, the Disse space and gap junctions were widened beginning at 40 min post injection. These results suggest that liver is the major target organ of MC-LR and isolated hepatocytes by the effects of such hepatotoxin may secondarily reduce the physiological function of lung and kidney.
Hepatotoxicity Induced by Microcystin-LR in Rat
Kim, Bum-Seok,Cho, Jae-Woo,Kwon, Hyuk-Nyun,Blank, Ivar,Borisova, Irina,Ejaz, Sohail,Chekarova, Irina,Kwon, Jung-Kee,Lim, Chae-Woong Korean Society of ToxicologyKorea Environmental Mu 2006 Toxicological Research Vol.22 No.4
Microcystin-LR (MC-LR) is a cyanobacterial hepatotoxin mainly produced by Microcystis aeruginosa. The current study examined the effects of a single intraperitoneal dose of MC-LR in rats. Female Sprague-Dawley rats were intraperitoneally injected with MC-LR ($100{\mu}g/kg$ body weight) and they were sacrificed at 0, 20, 40, 80, 160 min, or 12 h after injection. Clinically, animals showed lethargy and had ruffled hair beginning at 40 min post injection. In the gross findings, liver was enlarged and its color was changed into dark red beginning at 40 min post injection. Microscopically, dissociation of centrilobular hepatocytes and hemorrhage was observed in the hepatic central legions and such pathological changes were then extended to the portal regions of liver by time course manner. Interestingly at 80 min after MC-LR injection, the entrapped eosinophilic materials that may be necrotic fragments of dissociated hepatocytes were found in the capillaries of lung and renal glomerulus. Ultrastructurally, microvilli of the hepatocytes were disrupted or lost at all time points. Furthermore, the Disse space and gap junctions were widened beginning at 40 min post injection. These results suggest that liver is the major target organ of MC-LR and isolated hepatocytes by the effects of such hepatotoxin may secondarily reduce the physiological function of lung and kidney.
Case Report : Oculocutaneous albinism in a calf in Korea
( Bum Seok Kim ),( Gerry Amor Camer ),( Irina Chekarova ),( Muhammad Zeeshan ),( Irina Borisova ),( Ivar Blank ),( Sohail Ejaz ),( Hee Jin Park ),( Jung Kee Kwon ),( Chae Woong Lim ) 한국동물위생학회 2006 한국동물위생학회지 (KOJVS) Vol.29 No.4
Albinism, characterized by absence or lack of pigmentation from the hair, skin, hooves, nasal region and the eyes is rarely seen in cattle in Korea. A 15?day old calf, approximately weighing 28 kg has been conspicuously distinct from the rest of 40 herds of cattle raised in Sunchang country because of its white coat color, white muzzle and hooves and eyes with light pinkish iris. The calf was born of Korean indigenous cattle with no previously reported history of albinism since inception of the farm for over a decade period. It was assumed as a form of recessive genetic disorder. This observation was documented to present occurrence of albinism in cattle in Korea.
Progressively gangrenous limbs in Korean indigenous calves
Kim Bum-Seok,Camer Gerry Amor,Berzina Dace,Chekarova Irina,Zeeshan Muhammad,Borisova Irina,Blank Ivar,Ejaz Sohail,Park Hee-Jin,Kwon Jung-Kee,Lim Chae-Woong The Korean Society of Veterinary Service 2006 韓國家畜衛生學會誌 Vol.29 No.4
This study investigated cases of progressively necrotizing limbs in Korean indigenous calves. The recent case (Case 1) involved a 3-month old, male calf in Jeonbuk province that presented a visibly dry form of gangrene affecting joints of the forelimbs and the hind limbs. Radiograph revealed osteoarthritis possibly resulting from pressure of disrupted joint skin, fasciae, deeper underlying musculatures and tendon. Histopathology of affected tissue showed necrotizing; severely thrombosed dilated blood vessels with rechanneling microvasculatures. The lack of substantial infectious inflammatory exudates in the vital organs and the inability to respond to antimicrobial treatment bolstered the notion that the observed thromboembolic and vascular lesion was attributed to possible vasoconstrictive effects of ergot alkaloids. Case 2: A previously encountered similar case in a 4-month old, male calf showing gangrene of hind limbs and posterior ataxia was likewise presented. These two cases were impressed as probable ergotism. Ergotism may be uncommon or underreported in Korea. Future isolation of ergot alkaloids in feeds or in pasture is highly suggested.
Case Report : Progressively gangrenous Limbs in Korean indigenous calves
( Bum Seok Kim ),( Gerry Amor Camer ),( Dace Berzina ),( Irina Chekarova ),( Muhammad Zeeshan ),( Irina Borisova ),( Ivar Blank ),( Sohail Ejaz ),( Hee Jin Park ),( Jung Kee Kwon ),( Chae Woong Lim ) 한국동물위생학회 2006 한국동물위생학회지 (KOJVS) Vol.29 No.4
This study investigated cases of progressively necrotizing limbs in Korean indigenous calves. The recent case(Case 1) involved a 3-month old, male calf in Jeonbuk province that presented a visibly dry form of gangrene affecting joints of the forelimbs and the hind limbs. Radiograph revealed osteoarthritis possibly resulting from pressure of disrupted joint skin, fasciae, deeper underlying musculatures and tendon. Histopathology of affected tissue showed necrotizing; severely thrombosed dilated blood vessels with rechanneling microvasculatures. The lack of substantial infectious inflammatory exudates in the vital organs and the inability to respond to antimicrobial treatment bolstered the notion that the observed thromboembolic and vascular lesion was attributed to possible vasoconstrictive effects of ergot alkaloids. Case 2: A previously encountered similar case in a 4-month old, male calf showing gangrene of hind limbs and posterior ataxia was likewise presented. These two cases were impressed as probable ergotism. Ergotism may be uncommon or underreported in Korea. Future isolation of ergot alkaloids in feeds or in pasture is highly suggested.