Three different cats who had chronic kidney disease (CKD) were treated for more than one month with fluid therapy in an animal clinic. Although this long-term treatment and hospitalization, there was no clinical improvement in clinical signs as well as serum biochemical indexes including blood urea nitrogen (BUN), creatinine (CREA), and phosphate (PHOS). All cases were then injected three times with allogeneic stem cells through an intravenous route for treatment on Day 0, 7, and 14 or 30. On the same day, clinical observation and blood tests for serum biochemistry were conducted together. Upon administrating stem cells to the CKD cats, clinical conditions and the indexes of BUN and CREA were clinically improved within normal ranges. Additionally, one of the cats who had the renal cysts presented clinical improvement with showing decreased cysts size than before.

본 실험은 마우스를 이용해 급성신부전에 대한 WK 추출물의 효과를 알아보고자 하였다. 실험 종료 후, 대조군은 항암제 주입 후 정상 대조군에 비해 혈중 BUN 및 creatinine 수치가 상승된 것을 확인할 수 있었고, WK-50군, WK-100군 및 WK-200군은 대조군에 비해 수치가 감소된 것을 확인할 수 있었다. 그 중 WK-200군은 정상 대조군과 유의한 수준의 혈중 BUN 및 creatinine 수치가 관찰되었다. 조직학적 결과에서 적출한 신장 장기의 형태학적 손상을 알아본 결과, 대조군에서는 현저한 신손상이 관찰되었다. 반면, WK-50군 및 WK-100군에서는 신손상이 관찰되었으나 대조군에 비하여 그 정도가 심하지 않았고, 특히 WK-200군에서는 신손상이 거의 관찰되지 않았음을 알 수 있었다. 따라서 WK 추출물은 급성신부전에 유의한 효과를 보이는 것으로 생각된다.

In order to determine whether green tea tannin ameliorates abnormal arginine metabolism as the result of excessive arginine, we have assessed the effects of the administration of green tea tannin mixture in rats treated 30 days with 2% arginine. In the arginine-treated group, the level of guanidino compounds such as arginine (Arg), guanidinoacetic acid (GAA), creatinine (Cr), methylguanidine (MG) and guanidinosuccinic acid (GSA), nitric oxide, urea, protein and glucose increased significantly in the serum, urine and kidney, whereas the oxygen species-scavenging enzymes of kidney were reduced as compared with the non-argmme-treated group. By way of contrast, the administration of green tea tannin reduced blood urea nitrogen and serum creatinine, and reduced the urinary excretion of guanidinoacetic acid, creatinine, and NO2-+NO3-. The increased levels of urinary urea, protein and glucose in the arginine-treated group were also lowered by the administration of green tea tannin. In these groups, the activities of superoxide dismutase and catalase in the kidneywere increased, thereby suggesting the involvement of radicals in the normalizing of kidney function. These results show that the abnormal renal function induced by the adminstration of excessive arginine in rats may be restored by treatment with green tea tannin.