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Synthesis and characterization of β-carotene-loaded albumin nanoparticles by high-speed homogenizer
Yang Hye Gyeong,Yang Eun‐Ju,Park Eun Ji,Lee Young Jin,Safavi Maryam Sadat,Song Kyung‐Sik,Na Dong Hee 대한화학회 2022 Bulletin of the Korean Chemical Society Vol.43 No.5
β-Carotene (BC) is a strong antioxidant, but its therapeutic application has been limited by its poor aqueous solubility. Protein-based nanoparticles (NPs) have been used to increase the aqueous solubility of hydrophobic drugs. In this study, bovine serum albumin (BSA) was used to prepare NPs to encapsulate BC using a high-speed homogenizer. After homogenization, BC-BSA-NPs were formed and the encapsulated BC was dissolved in phosphate-buffered saline at pH 7.4. Various characterization methods, including dynamic light scattering, transmission electron microscopy, and spectrophotometry, indicated that BCBSA- NPs were spherical with an average size of 112 nm and encapsulated BC with high efficiency. BC encapsulated in NPs was stable during the preparation process and was continuously released in PBS at 37 C for 3 days. The 2,2- diphenyl-1-picrylhydrazyl and ferric reducing antioxidant power assays demonstrated good antioxidant activity of BC-BSA-NPs. These results suggest that BSA-NPs are a promising nanocarrier for the delivery of BC.
Respiratory Syncytial Virus에 의한 세기관지염에서 아토피 상태에 따른 면역 조절 사이토카인들의 차이
양범석 ( Yang Beom Seog ),김소연 ( Kim So Yeon ),이경훈 ( Lee Gyeong Hun ),이준화 ( Lee Jun Hwa ),최은진 ( Choe Eun Jin ),김진경 ( Kim Jin Gyeong ),김상경 ( Kim Sang Gyeong ),김우택 ( Kim U Taeg ),정혜리 ( Jeong Hye Li ) 대한소아알레르기호흡기학회(구 대한소아알레르기 및 호흡기학회) 2004 소아알레르기 및 호흡기학회지 Vol.14 No.1
목적: 최근의 연구들에 의하면 항염증성 사이토카인으로 알려져 왔던 interleukin(IL)-10과 IL-11들이 RSV 감염의 병리적 기전에 관여하는 것으로 보고되고 있다. Respiratory syncytial virus(RSV)에 의한 급성 세기관지염의 증상은 아토피 또는 아토피의 가족력을 가진 환자에서 더 심하게 나타난다고 보고되어 왔다. 본 연구의 목적은 RSV에 의한 급성 세기관지염에 이환된 환아들의 비분비물에서 IL-10과 IL-11을 측 Purpose : Recent studies have demonstrated and suggested that Interleukin(IL)-10 and IL-11 are implicated in the pathophysiology of RSV infection and may act in the regulation of inflammatory response. We measured IL-10 and IL-11 in nasal secretions of in
서행성 변비환자에서 비침습적 천수신경 전기자극치료의 효과
송혜경 ( Song Hye Gyeong ),명승재 ( Myeong Seung Jae ),양석균 ( Yang Seog Gyun ),이진혁 ( Lee Jin Hyeog ),양동훈 ( Yang Dong Hun ),장혜숙 ( Jang Hye Sug ),정은주 ( Jeong Eun Ju ),윤인자 ( Yun In Ja ),홍원선 ( Hong Won Seon ),김진 대한소화기기능성질환·운동학회 2003 Journal of Neurogastroenterology and Motility (JNM Vol.9 No.2
목적: 서행성 변비는 치료에 있어 주로 자극성 완하제에 의존하게 되어 치료에 어려움이 있다. 골반 부교감신경은 대장운동 항진에 중요한 역할을 하는데 최근 척수손상으로 인한 신경인성장 환자에서 대장운동을 항진시키기 위해 골반 부교감신경이 유래되는 천수신경 전기자극이 이용되었다. 한편 신경인성 장으로 인한 변비환자를 대상으로 한 천수신경 피부분절 전기자극치료 연구에서 비침습적인 표면전극을 통한 전기자극도 천수신경을 자극하여 대장운동이 항진되고 대장통과시간이 Background/Aims: Patients with slow transit constipation are poorly responsive to medical therapy and sometimes require an invasive surgical procedure, such as a total colectomy. Electric stimulation therapy (EST) of the sacral nerve by using an implanted
Hye-Yeon Kim,Min-Gyeong Kim,Mi-Ran Kang,Jeong-Ho Yang,Min-Ho Shin,Sun-Seog Kweon 한국역학회 2022 Epidemiology and Health Vol.44 No.-
OBJECTIVES We evaluated whether the coronavirus disease 2019 (COVID-19) pandemic caused delays in the diagnosis and treatment of colorectal cancer (CRC) in Korea, where there have been no regional or hospital lockdowns during the pandemic period. METHODS Data on CRC patients (n=1,445) diagnosed in Gwangju Metropolitan City and Jeonnam Province between January 2019 and December 2021 were assessed. The stage at the time of CRC diagnosis, route to diagnosis, time to initial cancer treatment, and length of hospital admission were compared before and during the COVID-19 pandemic. Logistic regression was also performed to identify factors associated with the risk for diagnosis in an advanced stage. RESULTS No negative effects indicating a higher CRC stage at diagnosis or delayed treatment during the pandemic were observed. Instead, the risk for an advanced stage at diagnosis (TNM stage III/IV) decreased in CRC patients diagnosed during the pandemic (odds ratio, 0.768; 95% confidence interval, 0.647 to 0.911). No significant differences in the interval from diagnosis to operation or chemotherapy were observed. CONCLUSIONS No negative effects on CRC diagnosis and treatment were found until the end of 2021, which may be related to the small magnitude of the COVID-19 epidemic, the absence of a lockdown policy in Korea, and the rebound in the number of diagnostic colonoscopy procedures in 2021.