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Osamu SAKAI Shoji OGINO Toshihiro TSUKUI Masaya IGASE Takuya MIZUNO 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2021,83(10):1495
Chimeric antigen receptor (CAR) CAR-T cell therapy targeting CD20 can be a novel adoptive cell therapy for canine patients with B-cell malignancy. After injection of the CAR-T cells in vivo, monitoring circulating CAR-T cells is essential to prove in vivo persistence of CAR-T cells. In this study, we developed a novel monoclonal antibody against canine CD20 CAR, whose single-chain variable fragment was derived from the our previously reported anti-canine CD20 therapeutic antibody. Furthermore, we proved that this monoclonal antibody can detect therapeutic anti-canine CD20 chimeric antibody in the serum from healthy beagle dogs injected with the therapeutic antibody for safety study. This monoclonal antibody is a useful tool for monitoring both canine CD20-CAR-T cells and anti-canine CD20 therapeutic antibody for canine lymphoma. 相似文献
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Senkiti SAKAI Takahiro SATOW Kazuhiko IMAKAWA Kentaro NAGAOKA 《Animal Science Journal》2010,81(6):694-698
In dairy cows, hydrogen peroxide (H2O2) produced from a low‐molecular‐weight compound in milk from inflamed quarters was lower than that in milk from un‐inflamed quarters. In milk of delivery grade, characteristics of H2O2 production in milk with high electrical conductivity (EC) were examined in this study. Milk samples were collected from a total of 230 cows at 1‐month intervals, and the EC of skimmed milk was determined. Based on the highest and the lowest EC of a cow's quarter milk, the inter‐quarter difference of ≥0.6 mS/cm (mean + t0.01 SE) was taken as a high EC. Milk with high EC was found in 52 quarters. In cows with milk of high EC, H2O2 production in milk with normal EC was higher than that in milk with high EC in the same animal but was lower than that in the control population. In milk with high EC, the decrease of H2O2 production correlated with the increase in EC. The production of H2O2 decreased in particular when the inter‐quarter difference exceeded 0.8 mS/cm. In milk collected from the same quarter 1 month before, EC changed from normal to high, and H2O2 production decreased. In milk from the other three quarters, EC remained normal and H2O2 production remained unchanged. We concluded that milk with high EC appeared in low H2O2‐producing cows. The results suggest that the degree of decrease in H2O2 production reflects the extent of quarter abnormality. 相似文献
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为分析东北侵蚀黑土中大豆和玉米根部伴生细菌群落结构多样性,促进土壤侵蚀过程中其根部伴生细菌群落结构响应规律的研究,本研究结合LNA-PCR技术和高通量测序方法,模拟东北黑土侵蚀土壤,分析玉米播种期和抽穗期、大豆开花期根部细菌群落结构多样性和差异.结果表明:土壤表层剥离后大豆根部细菌群落多样性降低,而玉米根部细菌群落多样... 相似文献
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Yoshifumi ENDO Toshikazu SAKAI Sho FUKUI Ai HORI Ryosuke ECHIGO Satoru MATSUNAGA Tsuyoshi KADOSAWA 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2022,84(2):218
A 10-year-old spayed female Golden Retriever was referred for hindlimb lameness. A firm mass was palpated over the right caudal pelvis. Computed tomography revealed an osteolytic bone region and an associated periosteal reaction in the ischium, including the acetabulum. The histological diagnosis was sarcoma of unknown origin. A mid-to-caudal partial hemipelvectomy was performed to remove the mass. Femoral head and neck osteotomy was performed to allow hindlimb preservation. Following surgery, the dog regained satisfactory hindlimb use over time and was alive for 821 days with no recurrence or metastatic disease. This report indicates that mid-to-caudal partial hemipelvectomy with femoral head and neck osteotomy is technically feasible and allows for tumor control with preservation of the hindlimb and its function. 相似文献
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In this study, vancomycin‐resistant enterococci (VRE) from humans and vancomycin‐resistant gram‐positive cocci (VRPC) from pigs were examined for their ability to transmit in the chick intestine (Experiment 1). A model study on the spread speed of VRPC was also estimated from chick to chick under semi‐production conditions with different administration routes (not inoculated, oral administration to a chick, sprayed on the floor) (Experiment 2). Furthermore, the disappearance of VRPC from their litter with composting processes was examined (Experiment 3). Each of six chicks was inoculated with VRPC or VRE at 1 day old in Experiment 1. All the chicks had VRPC or VRE in their glandular stomach at 22 days of age. In Experiment 2, 6 floor pens covered with sawdust were prepared and 20 chicks were allotted to each pen. The chicks were inoculated with VRPC at 1 day of age. The VRPC were detected in each group in cloacal swabs at 2 days of age (detection rate; 20–80%). And they were also detected in the not‐inoculated group. The VRPC detection rate gradually decreased, and detection was rare (0–10%) in the packing chicks (50 days old). VRPC were detected in the litter of each pen in Experiment 2. A composting process was effectively used to eliminate VRPC by the 6th week (Experiment 3). 相似文献
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