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Pathological evaluation of renal changes induced by multiple nephropathogenic facotrs in SPF chickens
1999
Kang, K.I. | Hahn, T.W. | Han, J.H. (Kangwon National University, Chuncheon (Korea Republic). Department of Veterinary Medicine) | Mo, I.P. | Kwon, Y.K. | Kang, M.S. (National Veterinary Research and Quarantine, Anyang (Korea Republic).)
Renal failure is one of the main causes of economic impacts in the poultry industry and complex syndrome with different severity of clinical signs caused by multiple nephropathogenic factors such as infectious bronchitis viral infection and excess salt and calcium in diet. To evaluate the correlation between severity of renal failure and the causative nephropathogenic factors, one-day-old specific patogen free chicks were treated with either single causative factor or multiple causative factors described as above. Each group was designed as control for non-treated control, IB for infectious bronchitis virus (IB virus) infectio, IBHNa for IB virus infection with high diet salt, IBHCa for IB virus infectio with high diet calcium, IBHNC for IB virus infection with high diet salt and calcium, HNa for high diet salt, HCa for high diet calcium and HNC for high diet salt and calcium. Chickens were inoculated with IB virus at 1-day-old and remained on their respective diets until 21 day of age. The high dietary salt feeding groups such as IBHNa, IBHNC, HNa, HNC increased water intake, watery diarrhea, general subcutaneous edema and the high dietary calcium feeding groups such as IBHCa and IBHNC showed severe visceral gout. Two more than treated groups caused high mortality in comparison with the single treated groups. In virus exposure significantly increased urate deposition and lymphocytic interstitial nephritis. Espcecially urate deposition dramatically increased when excess diet calcium was combined together. In excess diet salt treated groups enlarged edematous kidneys were observed and hypertrophy of glomeruli were showed. These results suggest that IB virus enhanced the incidence and severity on chicken renal failure clearly related to the quantity of salt and calcium.
Show more [+] Less [-]Upregulation of aquaporin 2 and aquaporin 4 in the water-deprived mongolian gerbil (Meriones unguiculatus) kidney
2007
Song, J.H. (Chungnam National University, Daejeon, Republic of Korea) | Kwon, J.S. (Chungnam National University, Daejeon, Republic of Korea) | Kim, Y.H. (Chungnam National University, Daejeon, Republic of Korea) | Park, Y.D. (Youngdong University, Youngdong, Republic of Korea) | Han, K.H. (Ewha Womans University, Seoul, Republic of Korea) | Ryu, S.Y. (Chungnam National University, Daejeon, Republic of Korea) | Jung, J.Y. (Chungnam National University, Daejeon, Republic of Korea), E-mail: jyjung@cnu.ac.kr
Mongolian gerbil (Meriones unguiculatus) has been as an model animal for studing the neurological disease such as stroke and epilepsy because of the congenital incompleteries in Willis circle, as well as the investigation of water metabolism because of the long time-survival in the condition of water-deprived desert condition, compared with other species animal. Aquaporin 2 (AQP2) expressed at the surface of principal cells in collecting duct results from an equilibrium between the AQP2 in intracellular vesicles and the AQP2 on the plasma membrane.
Show more [+] Less [-]Pathological evaluation of renal changes induced by myltiple nephropathogenic factors in SPF chickens
1999
Kang, K.I. | Hahn, T.W. | Han, J.H. (Kangwon National University, Chuncheon (Korea Republic). Department of Veterinary Medicine) | Mo, I.P. | Kwon, Y.K. | Kang, M.S. (National Veterinary Research and Quarantine, Anyang (Korea Republic).)
Renal failure is one of the main causes of economic impacts in the poultry industry and complex syndrome with different severity of clinical signs caused by multiple nephropathogenic factors such as infectious bronchitis viral infection and excess salt and calcium in diet. To evaluate the correlation between severity of renal failure and the causative nephropathogenic factors, one-day-old specific pathogen free chickens were treated with either single causative factor or multiple causative factors described as above. Each group was designed as control for non-treated control, IB for infectious bronchitis virus (IB virus) infection, IBHNa for IB virus infection with high diet salt, IBHCa for IB virus infection with high diet calcium, IBHNC for IB virus infection with high diet salt and calcium, HNa for high diet salt, HCa for high diet calcium and HNC for high diet salt and calcium. Chickens were inoculated with IB virus at 1-day-old and remained on their respective diets until 21 day of age. Plasma Na+, Cl-, BUN, creatinine, calcium and uric acid values were examined. The results obtained were as follows; IB virus and high dietary calcium combined treatment showed elevated plasma uric acid. BUN and creatinine values were not characteristic on chicken renal failure. But plasma uric acid values were increased according to renal lesion. Hypercalcemia and hyperuicemia did not induce urate deposition and mineralization in the kidney.
Show more [+] Less [-]The relationship between high glucose-induced secretion of IGFs and PKC or oxidative stress in mesangial cells
Park, S.H.;Heo, J.S.;Han, H.J.(Chonnam National University, Gwangju, Republic of Korea)E-mail:hjhan@chonnam.ac.kr | Kang, C.W.(Chonbuk National University, Jeonju, Republic of Korea)
The proliferation of mesangial cells has been associated with the development of diabetic nephropathy. The cell proliferation has been regulated by diverse growth factors. Among them, insulin like growth factors(IGFs) are also involved in the pathogenesis of diabetic nephropathy. However, it is not yet known about the effect of high glucose on IGF-I and IGF-Ⅱ secretion and the relationship between high glucose-induced secretion of IGFs and PKC or oxidative stress in the mesangial cells.
Show more [+] Less [-]Effect of renal ischemia on amino acid transport in rabbit renal cortical slices
1997
Nam, Y.J. | Kim, J.H. (Gyeongsang National University, Chinju (Korea Republic). College of Veterinary Medicine)
Effects of high glucose concentration of IGF-I binding and glucose transporters in renal proximal tubule cells
1997
Han, H.J. | Park, K.M. | Son, C.H. (Chonnam National University, Kwangju (Korea Republic). College of Veterinary Medicine) | Yoon, Y.D. (Hanyang University, Seoul (Korea Republic). College of Natural Science)
Effects of administration of Lactobacillus acidophilus-fermented milk on hematological values and histopathological changes of kidney in cadmium-treated rats
1994
Cho, Y.C. (Chungnam National University, Taejon (Korea Republic). College of Medicine) | Jun, M.H. | Chang, K.S. (Chungnam National University, Taejon (Korea Republic). College of Veterinary Medicine)
Relaxation of P2-purinoceptor on isolated renal artery of rabbit
1992
Kim, J.H. (Gyeongsang Nat'l Univ., Chinju (Korea Republic). Coll. of Veterinary Medicine) | Kim, Y.K. (Pusan Nat'l Univ., Pusan (Korea Republic). Coll. of Medicine)
Source of Ca++ and effect of adenosine triphosphate on the isolated renal artery of pig
1991
Nam, Y.J. | Kim, J.H. (Gyeongsang National Univ., Chinju (Korea Republic). Coll. of Veterinary Medicine)
Relationship between estradiol-17beta and IGF-I receptor expression in primary cultured rabbit renal proximal tubule cells
1997
Han, H.J. | Nam, S.A. | Park, K.M. (Chonnam National University, Kwangju (Korea Republic). College of Veterinary Medicine)