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Hasegawa, Yasushi,Nakagawa, Erina,Kadota, Yukiya,Kawaminami, Satoshi Asian Australasian Association of Animal Productio 2017 Animal Bioscience Vol.30 No.1
Objective: Adipose tissue plays a key role in the development of obesity and diabetes. We previously reported that lignosulfonic acid suppresses the rise in blood glucose levels through the inhibition of ${\alpha}$-glucosidase activity and intestinal glucose absorption. The purpose of this study is to examine further biological activities of lignosulfonic acid. Methods: In this study, we examined the effect of lignosulfonic acid on differentiation of 3T3-L1 cells. Results: While lignosulfonic acid inhibited proliferation (mitotic clonal expansion) after induction of differentiation, lignosulfonic acid significantly increased the size of accumulated lipid droplets in the cells. Semi-quantitative reverse transcription polymerase chain reaction analysis showed that lignosulfonic acid increased the expression of the adipogenic transcription factor, peroxisome proliferator-activated receptor gamma ($PPAR{\gamma}$), leading to increased glucose transporter 4 (Glut-4) expression and 2-deoxyglucose uptake in differentiated 3T3-L1 cells. Additionally, feeding lignosulfonic acid to diabetic KK-Ay mice suppressed increase of blood glucose level. Conclusion: Lignosulfonic acid may be useful as a functional anti-diabetic component of food.
( Yasuo Horii ),( Yasushi Terao ),( Tomohiko Sasaki ),( Tetsuhiro Hasegawa ),( Shigeyuki Mori ) 한국폐기물자원순환학회 2002 APLAS Vol.2002 No.2
UV- 및 Ozone 처리에 의한 수중 다이옥신류 분해 시스템을 개발하였으며, 본 시스템은 일본의 도시고형폐기물 소각시설 주변의 다이옥신으로 오염된 호수에 적용되었다. 본 시스템의 특징은 다음과 같다. ⑴ 고 분해비, ⑵ 운전 및 유지 관리의 용이(실온 및 기압에서 운전됨) ⑶ 간단한 구조, ⑷ 다이옥신류 증발 위해성이 없음 ⑸ 설치에 알맞은 유용한 설비 형태 본 시스템은 4개월 동안 다이옥신류에 오염된 물 50 m3/day를 안정적으로 고 성능 처리하였으며, 그 결과 17-270 pg-TEQ/L의 다이옥신류 농도를 0.1 pg-TEQ/L 이하로 감소시켰다. 본 시스템은 원격 경보 시스템이 장치된 자동 설비이므로, 작업자는 단지 주중에는 기기를 보호 감시하고, 주말에는 시스템 조건에 대한 정보를 유지하면 된다. We developed the decomposition system of DXNs in water by UV- and Ozone-treatment. The system was applied to DXNs-contaminated water in ponds around a municipal solid waste incineration plant in JAPAN. The system has the following features, ⑴ high ratio of the decomposition, ⑵ easy operation and maintenance (operated under room temperature and atmospheric pressure) ⑶ simple structure, ⑷ no risk of DXNs evaporation and ⑸ availability of the unit type suitable for an erection. The system demonstrated its high performance treating 50m3/d of DXNs-contaminated water stably for 4 months, thereby decreasing DXNs from 17 - 270 pg-TEQ/L to below the guarantee level 0.1 pg-TEQ/L. Since the system runs hands-off and is equipped with the automatic shutdown mechanism together with the remote alarm system, the personnel in charge only needs to diagnose in weekdays and is kept informed of the system condition during weekends.
REMEDIATION OF DXNS-CONTAMINATED WATER IN PONDS
( Yasuo Horii ),( Yasushi Terno ),( Tomohiko Sasaki ),( Tetsuhiro Hasegawa ),( Shigeyuki Mori ) 한국폐기물자원순환학회 2002 APLAS Vol.2002 No.1
We developed the decomposition system of DXNs in water by UV- and Ozone-treatment. The system was applied to DXNs-contaminated water in ponds around a municipal solid waste incineration plant in JAPAN. The system has the following features, (1) high ratio of the decomposition, (2) easy operation and maintenance (operated under room temperature and atmospheric pressure) (3) simple structure, (4) no risk of DXNs evaporation and (5) availability of the unit type suitable for an erection. The system demonstrated its high performance treating 50㎥/d of DXNs-contaminated water stably for 4 months, thereby decreasing DXNs from 17 - 270 pg- TEQ/L to below the guarantee level 0.1 pg-TEQ/L. Since the system runs hands-off and is equipped with the automatic shutdown mechanism together with the remote alarm system, the personnel in charge only needs to diagnose in weekdays and is kept informed of the system condition during weekends.
Akira Umemura,Hiroyuki Nitta,Takeshi Takahara,Yasushi Hasegawa,Hirokatsu Katagiri,Shoji Kanno,Megumi Kobayashi,Taro Ando,Taku Kimura,Akira Sasaki 한국간담췌외과학회 2020 Annals of hepato-biliary-pancreatic surgery Vol.24 No.4
A 57-year-old Japanese female was considered for living donor liver transplantation (LDLT) due to end-stage liver cirrhosis caused by primary biliary cholangitis with portal vein thrombosis (PVT) formation. A 26-year-old daughter of the patient was selected as a living donor; however, a computed tomography examination revealed trifurcated-type portal vein anomaly (PVA). Preoperative liver volumetry showed that the right lobe graft was necessary for the recipient; therefore, reconstruction of the portal vein bifurcation during LDLT was necessary. We planned to extract the recipient’s own hepatic vein grafts after total hepatectomy, and these would be attached with anterior and posterior portal branches as jump grafts. We performed laparoscopic donor hepatectomy as usual, and the recipient’s hepatic vein grafts were anastomosed on the bench. Then, the liver graft was inserted, and the hepatic vein reconstruction was routinely performed. We confirmed the alignment between the recipient’s portal vein and the bridged hepatic vein graft of the liver graft’s posterior branch, and anastomosed these two vessels. Moreover, we confirmed the front flow and expansion of the reconstructed posterior branch by declamping only the suprapancreatic side of the portal vein. The decision regarding the punch-out location was crucial. We confirmed the alignment between the reconstructed posterior branch and the bridged hepatic vein graft of the anterior branch, and anastomosed these two vessels employing the punched-out technique. In LDLT, liver transplant surgeons occasionally encounter living donors with PVA or recipients with PVT. Our contrivance may be useful when the liver graft needs reconstruction of portal vein bifurcation.
Investigation of the Magnetic Co Antidot Array Structure on Anodic Porous Alumina
박영옥,김철성,고태준,Satoru Mohri,Sawako Ohno,Kenji Taira,Yasushi Hirose,Tetsuya Hasegawa 한국물리학회 2010 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.56 No.2
The surface morphology and the magnetic properties of thin Co films deposited on anodic porous alumina substrates have been studied. The uniform porosity of the alumina substrate prepared by using the two-step anodization process allows the fabrication of Co films with an antidot nanostructure. Also, by varying the deposition temperature, we obtain two distinctive surface morphologies through the thermally-driven coalescence process. Careful measurements of their magnetization curves reveal that the magnetic properties, such as the coercivity and the shape of the hysteresis curve, of the Co films deposited on the porous substrates differ significantly from those of films deposited on non-porous substrates.